Parse out in reply to field. Fixes #694

- When a comment or post doesn't exist locally, yet we receive
  an activitypub with it (for example, a nested comment update,
  for a community we just subscribed to, also with a post we
  don't have...), then fetch it.

.dockerignore

@@ -1,6 +1,12 @@
+# build folders and similar which are not needed for the docker build
 ui/node_modules
-ui/dist
 server/target
 docker/dev/volumes
 docker/federation/volumes
+docker/federation-test/volumes
 .git
+ansible
+
+# exceptions, needed for federation-test build
+
+!server/target/debug/lemmy_server

.gitignore

@@ -1,10 +1,18 @@
+# local ansible configuration
 ansible/inventory
 ansible/inventory_dev
 ansible/passwords/
+
+# docker build files
 docker/lemmy_mine.hjson
 docker/dev/env_deploy.sh
-build/
-.idea/
-ui/src/translations
-docker/dev/volumes
+docker/federation/volumes
 docker/federation-test/volumes
+docker/dev/volumes
+
+# local build files
+build/
+ui/src/translations
+
+# ide config
+.idea/

README.md

@@ -73,7 +73,7 @@ Each lemmy server can set its own moderation policy; appointing site-wide admins
   - Full vote scores `(+/-)` like old reddit.
   - Themes, including light, dark, and solarized.
   - Emojis with autocomplete support. Start typing `:`
-  - User tagging using `@`, Community tagging using `#`.
+  - User tagging using `@`, Community tagging using `!`.
   - Integrated image uploading in both posts and comments.
   - A post can consist of a title and any combination of self text, a URL, or nothing else.
   - Notifications, on comment replies and when you're tagged.

docker/dev/docker-compose.yml

@@ -22,7 +22,7 @@ services:
       - RUST_LOG=debug
     volumes:
       - ../lemmy.hjson:/config/config.hjson
-    depends_on: 
+    depends_on:
       - postgres
       - pictshare
       - iframely

docker/dev/test_deploy.sh

@@ -1,11 +1,16 @@
-#!/bin/sh
+#!/bin/bash
+set -e
+
+BRANCH=$1
+
+git checkout $BRANCH
+cd ../../
 
 # Rebuilding dev docker
-docker-compose build
-docker tag dev_lemmy:latest dessalines/lemmy:test
-docker push dessalines/lemmy:test
+sudo docker build . -f "docker/dev/Dockerfile" -t "dessalines/lemmy:$BRANCH"
+sudo docker push "dessalines/lemmy:$BRANCH"
 
 # Run the playbook
-pushd ../../../lemmy-ansible
-ansible-playbook -i test playbooks/site.yml --vault-password-file vault_pass
+pushd ../lemmy-ansible
+ansible-playbook -i test playbooks/site.yml
 popd

docker/federation-test/run-tests.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+set -e
+
+pushd ../../server/
+cargo build
+popd
+
+sudo docker build ../../ --file ../federation/Dockerfile --tag lemmy-federation:latest
+
+sudo docker-compose --file ../federation/docker-compose.yml --project-directory . up -d
+
+pushd ../../ui
+yarn
+echo "Waiting for Lemmy to start..."
+while [[ "$(curl -s -o /dev/null -w '%{http_code}' 'localhost:8540/api/v1/site')" != "200" ]]; do sleep 1; done
+while [[ "$(curl -s -o /dev/null -w '%{http_code}' 'localhost:8550/api/v1/site')" != "200" ]]; do sleep 1; done
+while [[ "$(curl -s -o /dev/null -w '%{http_code}' 'localhost:8560/api/v1/site')" != "200" ]]; do sleep 1; done
+yarn api-test || true
+popd
+
+sudo docker-compose --file ../federation/docker-compose.yml --project-directory . down
+
+sudo rm -r volumes/

docker/federation/Dockerfile

@@ -0,0 +1,17 @@
+FROM ekidd/rust-musl-builder:1.38.0-openssl11
+
+USER root
+RUN mkdir /app/dist/documentation/ -p \
+ && addgroup --gid 1001 lemmy \
+ && adduser --disabled-password --shell /bin/sh -u 1001 --ingroup lemmy lemmy
+
+# Copy resources
+COPY server/config/defaults.hjson /app/config/defaults.hjson
+COPY ui/dist /app/dist
+COPY server/target/debug/lemmy_server /app/lemmy
+
+RUN chown lemmy:lemmy /app/ -R
+USER lemmy
+EXPOSE 8536
+WORKDIR /app
+CMD ["/app/lemmy"]

docker/federation/docker-compose.yml

@@ -0,0 +1,129 @@
+version: '3.3'
+
+services:
+  nginx:
+    image: nginx:1.17-alpine
+    ports:
+      - "8540:8540"
+      - "8550:8550"
+      - "8560:8560"
+    volumes:
+      # Hack to make this work from both docker/federation/ and docker/federation-test/
+      - ../federation/nginx.conf:/etc/nginx/nginx.conf
+    depends_on:
+      - lemmy_alpha
+      - pictshare_alpha
+      - lemmy_beta
+      - pictshare_beta
+      - lemmy_gamma
+      - pictshare_gamma
+      - iframely
+    restart: "always"
+
+  lemmy_alpha:
+    image: lemmy-federation:latest
+    environment:
+      - LEMMY_HOSTNAME=lemmy_alpha:8540
+      - LEMMY_DATABASE_URL=postgres://lemmy:password@postgres_alpha:5432/lemmy
+      - LEMMY_JWT_SECRET=changeme
+      - LEMMY_FRONT_END_DIR=/app/dist
+      - LEMMY_FEDERATION__ENABLED=true
+      - LEMMY_FEDERATION__TLS_ENABLED=false
+      - LEMMY_FEDERATION__INSTANCE_WHITELIST=lemmy_beta,lemmy_gamma
+      - LEMMY_PORT=8540
+      - LEMMY_SETUP__ADMIN_USERNAME=lemmy_alpha
+      - LEMMY_SETUP__ADMIN_PASSWORD=lemmy
+      - LEMMY_SETUP__SITE_NAME=lemmy_alpha
+      - RUST_BACKTRACE=1
+      - RUST_LOG=debug
+    restart: always
+    depends_on:
+      - postgres_alpha
+  postgres_alpha:
+    image: postgres:12-alpine
+    environment:
+      - POSTGRES_USER=lemmy
+      - POSTGRES_PASSWORD=password
+      - POSTGRES_DB=lemmy
+    volumes:
+      - ./volumes/postgres_alpha:/var/lib/postgresql/data
+    restart: always
+  pictshare_alpha:
+    image: shtripok/pictshare:latest
+    volumes:
+      - ./volumes/pictshare_alpha:/usr/share/nginx/html/data
+    restart: always
+
+  lemmy_beta:
+    image: lemmy-federation:latest
+    environment:
+      - LEMMY_HOSTNAME=lemmy_beta:8550
+      - LEMMY_DATABASE_URL=postgres://lemmy:password@postgres_beta:5432/lemmy
+      - LEMMY_JWT_SECRET=changeme
+      - LEMMY_FRONT_END_DIR=/app/dist
+      - LEMMY_FEDERATION__ENABLED=true
+      - LEMMY_FEDERATION__TLS_ENABLED=false
+      - LEMMY_FEDERATION__INSTANCE_WHITELIST=lemmy_alpha,lemmy_gamma
+      - LEMMY_PORT=8550
+      - LEMMY_SETUP__ADMIN_USERNAME=lemmy_beta
+      - LEMMY_SETUP__ADMIN_PASSWORD=lemmy
+      - LEMMY_SETUP__SITE_NAME=lemmy_beta
+      - RUST_BACKTRACE=1
+      - RUST_LOG=debug
+    restart: always
+    depends_on:
+      - postgres_beta
+  postgres_beta:
+    image: postgres:12-alpine
+    environment:
+      - POSTGRES_USER=lemmy
+      - POSTGRES_PASSWORD=password
+      - POSTGRES_DB=lemmy
+    volumes:
+      - ./volumes/postgres_beta:/var/lib/postgresql/data
+    restart: always
+  pictshare_beta:
+    image: shtripok/pictshare:latest
+    volumes:
+      - ./volumes/pictshare_beta:/usr/share/nginx/html/data
+    restart: always
+
+  lemmy_gamma:
+    image: lemmy-federation:latest
+    environment:
+      - LEMMY_HOSTNAME=lemmy_gamma:8560
+      - LEMMY_DATABASE_URL=postgres://lemmy:password@postgres_gamma:5432/lemmy
+      - LEMMY_JWT_SECRET=changeme
+      - LEMMY_FRONT_END_DIR=/app/dist
+      - LEMMY_FEDERATION__ENABLED=true
+      - LEMMY_FEDERATION__TLS_ENABLED=false
+      - LEMMY_FEDERATION__INSTANCE_WHITELIST=lemmy_alpha,lemmy_beta
+      - LEMMY_PORT=8560
+      - LEMMY_SETUP__ADMIN_USERNAME=lemmy_gamma
+      - LEMMY_SETUP__ADMIN_PASSWORD=lemmy
+      - LEMMY_SETUP__SITE_NAME=lemmy_gamma
+      - RUST_BACKTRACE=1
+      - RUST_LOG=debug
+    restart: always
+    depends_on:
+      - postgres_gamma
+  postgres_gamma:
+    image: postgres:12-alpine
+    environment:
+      - POSTGRES_USER=lemmy
+      - POSTGRES_PASSWORD=password
+      - POSTGRES_DB=lemmy
+    volumes:
+      - ./volumes/postgres_gamma:/var/lib/postgresql/data
+    restart: always
+  pictshare_gamma:
+    image: shtripok/pictshare:latest
+    volumes:
+      - ./volumes/pictshare_gamma:/usr/share/nginx/html/data
+    restart: always
+
+  iframely:
+    image: dogbin/iframely:latest
+    volumes:
+      - ../iframely.config.local.js:/iframely/config.local.js:ro
+    restart: always

docker/federation/nginx.conf

@@ -0,0 +1,110 @@
+events {
+    worker_connections 1024;
+}
+
+http {
+    server {
+        listen 8540;
+        server_name 127.0.0.1;
+        access_log  off;
+
+        # Upload limit for pictshare
+        client_max_body_size 50M;
+
+        location / {
+            proxy_pass http://lemmy_alpha:8540;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+
+            # WebSocket support
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+        }
+
+        location /pictshare/ {
+            proxy_pass http://pictshare_alpha:80/;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+
+        location /iframely/ {
+            proxy_pass http://iframely:80/;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+    }
+
+    server {
+        listen 8550;
+        server_name 127.0.0.1;
+        access_log off;
+
+        # Upload limit for pictshare
+        client_max_body_size 50M;
+
+        location / {
+            proxy_pass http://lemmy_beta:8550;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+
+            # WebSocket support
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+        }
+
+        location /pictshare/ {
+            proxy_pass http://pictshare_beta:80/;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+
+        location /iframely/ {
+            proxy_pass http://iframely:80/;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+    }
+
+    server {
+        listen 8560;
+        server_name 127.0.0.1;
+        access_log off;
+
+        # Upload limit for pictshare
+        client_max_body_size 50M;
+
+        location / {
+            proxy_pass http://lemmy_gamma:8560;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+
+            # WebSocket support
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+        }
+
+        location /pictshare/ {
+            proxy_pass http://pictshare_gamma:80/;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+
+        location /iframely/ {
+            proxy_pass http://iframely:80/;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header Host $host;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+    }
+}

docker/federation/run-federation-test.bash

@@ -0,0 +1,23 @@
+#!/bin/bash
+set -e
+
+# already start rust build in the background
+pushd ../../server/ || exit
+cargo build &
+popd || exit
+
+if [ "$1" = "-yarn" ]; then
+  pushd ../../ui/ || exit
+  yarn
+  yarn build
+  popd || exit
+fi
+
+# wait for rust build to finish
+pushd ../../server/ || exit
+cargo build
+popd || exit
+
+sudo docker build ../../ --file Dockerfile -t lemmy-federation:latest
+
+sudo docker-compose up

docs/src/about_guide.md

@@ -3,7 +3,7 @@
 Start typing...
 
 - `@a_user_name` to get a list of usernames.
-- `#a_community` to get a list of communities.
+- `!a_community` to get a list of communities.
 - `:emoji` to get a list of emojis.
 
 ## Sorting

docs/src/contributing_federation_development.md

@@ -5,17 +5,17 @@
 If you don't have a local clone of the Lemmy repo yet, just run the following command:
 
 ```bash
-git clone https://yerbamate.dev/nutomic/lemmy.git -b federation
+git clone https://yerbamate.dev/LemmyNet/lemmy.git -b federation
 ```
 
 If you already have the Lemmy repo cloned, you need to add a new remote:
 ```bash
-git remote add federation https://yerbamate.dev/nutomic/lemmy.git
+git remote add federation https://yerbamate.dev/LemmyNet/lemmy.git
 git checkout federation
 git pull federation federation
 ```
 
-## Running
+## Running locally
 
 You need to have the following packages installed, the Docker service needs to be running.
 
@@ -31,7 +31,30 @@ cd dev/federation-test
 ```
 
 After the build is finished and the docker-compose setup is running, open [127.0.0.1:8540](http://127.0.0.1:8540) and
-[127.0.0.1:8541](http://127.0.0.1:8541) in your browser to use the test instances. You can login as admin with
-username `lemmy` and password `lemmy`, or create new accounts.
+[127.0.0.1:8550](http://127.0.0.1:8550) in your browser to use the test instances. You can login as admin with
+username `lemmy_alpha` and `lemmy_beta` respectively, with password `lemmy`.
 
-Please get in touch if you want to contribute to this, so we can coordinate things and avoid duplicate work.
+## Running on a server
+
+Note that federation is currently in alpha. Only use it for testing, not on any production server, and be aware
+that you might have to wipe the instance data at one point or another.
+
+Follow the normal installation instructions, either with [Ansible](administration_install_ansible.md) or
+[manually](administration_install_docker.md). Then replace the line `image: dessalines/lemmy:v0.x.x` in 
+`/lemmy/docker-compose.yml` with `image: dessalines/lemmy:federation`. Also add the following in
+`/lemmy/lemmy.hjson`:
+
+```
+    federation: {
+        enabled: true
+        instance_whitelist: example.com
+    }
+```
+
+Afterwards, and whenver you want to update to the latest version, run these commands on the server:
+
+```
+cd /lemmy/
+sudo docker-compose pull
+sudo docker-compose up -d
+```

server/.rustfmt.toml

@@ -1,2 +1,5 @@
 tab_spaces = 2
-edition="2018"
+edition="2018"
+imports_layout="HorizontalVertical"
+merge_imports=true
+reorder_imports=true

server/Cargo.toml

@@ -5,20 +5,22 @@ authors = ["Dessalines <happydooby@gmail.com>"]
 edition = "2018"
 
 [dependencies]
-diesel = { version = "1.4.2", features = ["postgres","chrono", "r2d2", "64-column-tables"] }
+diesel = { version = "1.4.4", features = ["postgres","chrono","r2d2","64-column-tables","serde_json"] }
 diesel_migrations = "1.4.0"
 dotenv = "0.15.0"
-bcrypt = "0.6.2"
-activitypub = "0.2.0"
+activitystreams = "0.6.2"
+activitystreams-new = { git = "https://git.asonix.dog/asonix/activitystreams-sketch" }
+activitystreams-ext = { git = "https://git.asonix.dog/asonix/activitystreams-ext" }
+bcrypt = "0.8.0"
 chrono = { version = "0.4.7", features = ["serde"] }
-failure = "0.1.5"
+failure = "0.1.8"
 serde_json = { version = "1.0.48", features = ["preserve_order"]}
 serde = { version = "1.0.105", features = ["derive"] }
 actix = "0.9.0"
 actix-web = "2.0.0"
 actix-files = "0.2.1"
 actix-web-actors = "2.0.0"
-actix-rt = "1.0.0"
+actix-rt = "1.1.1"
 log = "0.4.0"
 env_logger = "0.7.1"
 rand = "0.7.3"
@@ -34,8 +36,15 @@ rss = "1.9.0"
 htmlescape = "0.3.1"
 config = "0.10.1"
 hjson = "0.8.2"
+url = { version = "2.1.1", features = ["serde"] }
 percent-encoding = "2.1.0"
-isahc = "0.9"
+isahc = "0.9.2"
 comrak = "0.7"
-tokio = "0.2.18"
-futures = "0.3.4"
+openssl = "0.10"
+http = "0.2.1"
+http-signature-normalization = "0.5.1"
+base64 = "0.12.1"
+tokio = "0.2.21"
+futures = "0.3.5"
+itertools = "0.9.0"
+uuid = { version = "0.8", features = ["serde", "v4"] }

server/config/config.hjson

@@ -0,0 +1,4 @@
+{
+  hostname: "localhost:8536"
+  federation_enabled: true
+}

server/config/defaults.hjson

@@ -26,7 +26,7 @@
     pool_size: 5
   }
   # the domain name of your instance (eg "dev.lemmy.ml")
-  hostname: "my_domain"
+  hostname: null
   # address where lemmy should listen for incoming requests
   bind: "0.0.0.0"
   # port where lemmy should listen for incoming requests
@@ -35,9 +35,6 @@
   jwt_secret: "changeme"
   # The dir for the front end
   front_end_dir: "../ui/dist"
-  # whether to enable activitypub federation. this feature is in alpha, do not enable in production, as might
-  # cause problems like remote instances fetching and permanently storing bad data.
-  federation_enabled: false
   # rate limits for various user actions, by user ip
   rate_limit: {
     # maximum number of messages created in interval
@@ -53,6 +50,15 @@
     # interval length for registration limit
     register_per_second: 3600
   }
+  # settings related to activitypub federation
+  federation: {
+    # whether to enable activitypub federation. this feature is in alpha, do not enable in production.
+    enabled: false
+    # whether tls is required for activitypub. only disable this for debugging, never for producion.
+    tls_enabled: true
+    # comma seperated list of instances with which federation is allowed
+    instance_whitelist: ""
+  }
 #  # email sending configuration
 #  email: {
 #    # hostname of the smtp server

server/migrations/2020-03-26-192410_add_activitypub_tables/down.sql

@@ -0,0 +1,16 @@
+drop table activity;
+
+alter table user_ 
+drop column actor_id, 
+drop column private_key,
+drop column public_key,
+drop column bio,
+drop column local,
+drop column last_refreshed_at;
+
+alter table community 
+drop column actor_id, 
+drop column private_key,
+drop column public_key,
+drop column local,
+drop column last_refreshed_at;

server/migrations/2020-03-26-192410_add_activitypub_tables/up.sql

@@ -0,0 +1,36 @@
+-- The Activitypub activity table
+-- All user actions must create a row here.
+create table activity (
+  id serial primary key,
+  user_id int references user_ on update cascade on delete cascade not null, -- Ensures that the user is set up here.
+  data jsonb not null,
+  local boolean not null default true,
+  published timestamp not null default now(),
+  updated timestamp
+);
+
+-- Making sure that id is unique
+create unique index idx_activity_unique_apid on activity ((data ->> 'id'::text));
+
+-- Add federation columns to the two actor tables
+alter table user_ 
+-- TODO uniqueness constraints should be added on these 3 columns later
+add column actor_id character varying(255) not null default 'changeme', -- This needs to be checked and updated in code, building from the site url if local
+add column bio text, -- not on community, already has description
+add column local boolean not null default true,
+add column private_key text, -- These need to be generated from code
+add column public_key text,
+add column last_refreshed_at timestamp not null default now() -- Used to re-fetch federated actor periodically
+;
+
+-- Community
+alter table community 
+add column actor_id character varying(255) not null default 'changeme', -- This needs to be checked and updated in code, building from the site url if local
+add column local boolean not null default true,
+add column private_key text, -- These need to be generated from code
+add column public_key text,
+add column last_refreshed_at timestamp not null default now() -- Used to re-fetch federated actor periodically
+;
+
+-- Don't worry about rebuilding the views right now.
+

server/migrations/2020-04-03-194936_add_activitypub_for_posts_and_comments/down.sql

@@ -0,0 +1,7 @@
+alter table post 
+drop column ap_id, 
+drop column local;
+
+alter table comment 
+drop column ap_id, 
+drop column local;

server/migrations/2020-04-03-194936_add_activitypub_for_posts_and_comments/up.sql

@@ -0,0 +1,14 @@
+-- Add federation columns to post, comment
+
+alter table post
+-- TODO uniqueness constraints should be added on these 3 columns later
+add column ap_id character varying(255) not null default 'changeme', -- This needs to be checked and updated in code, building from the site url if local
+add column local boolean not null default true
+;
+
+alter table comment
+-- TODO uniqueness constraints should be added on these 3 columns later
+add column ap_id character varying(255) not null default 'changeme', -- This needs to be checked and updated in code, building from the site url if local
+add column local boolean not null default true
+;
+

server/migrations/2020-04-07-135912_add_user_community_apub_constraints/down.sql

@@ -0,0 +1,36 @@
+-- User table
+drop view user_view cascade;
+
+alter table user_ 
+add column fedi_name varchar(40) not null default 'changeme';
+
+alter table user_
+add constraint user__name_fedi_name_key unique (name, fedi_name);
+
+-- Community
+alter table community
+add constraint community_name_key unique (name);
+
+
+create view user_view as 
+select 
+u.id,
+u.name,
+u.avatar,
+u.email,
+u.matrix_user_id,
+u.fedi_name,
+u.admin,
+u.banned,
+u.show_avatars,
+u.send_notifications_to_email,
+u.published,
+(select count(*) from post p where p.creator_id = u.id) as number_of_posts,
+(select coalesce(sum(score), 0) from post p, post_like pl where u.id = p.creator_id and p.id = pl.post_id) as post_score,
+(select count(*) from comment c where c.creator_id = u.id) as number_of_comments,
+(select coalesce(sum(score), 0) from comment c, comment_like cl where u.id = c.creator_id and c.id = cl.comment_id) as comment_score
+from user_ u;
+
+create materialized view user_mview as select * from user_view;
+
+create unique index idx_user_mview_id on user_mview (id);

server/migrations/2020-04-07-135912_add_user_community_apub_constraints/up.sql

@@ -0,0 +1,38 @@
+-- User table
+
+-- Need to regenerate user_view, user_mview
+drop view user_view cascade;
+
+-- Remove the fedi_name constraint, drop that useless column
+alter table user_ 
+drop constraint user__name_fedi_name_key;
+
+alter table user_
+drop column fedi_name;
+
+-- Community
+alter table community
+drop constraint community_name_key;
+
+create view user_view as 
+select 
+u.id,
+u.name,
+u.avatar,
+u.email,
+u.matrix_user_id,
+u.admin,
+u.banned,
+u.show_avatars,
+u.send_notifications_to_email,
+u.published,
+(select count(*) from post p where p.creator_id = u.id) as number_of_posts,
+(select coalesce(sum(score), 0) from post p, post_like pl where u.id = p.creator_id and p.id = pl.post_id) as post_score,
+(select count(*) from comment c where c.creator_id = u.id) as number_of_comments,
+(select coalesce(sum(score), 0) from comment c, comment_like cl where u.id = c.creator_id and c.id = cl.comment_id) as comment_score
+from user_ u;
+
+create materialized view user_mview as select * from user_view;
+
+create unique index idx_user_mview_id on user_mview (id);
+

server/migrations/2020-04-14-163701_update_views_for_activitypub/down.sql

@@ -0,0 +1,440 @@
+-- user_view
+drop view user_view cascade;
+
+create view user_view as 
+select 
+u.id,
+u.name,
+u.avatar,
+u.email,
+u.matrix_user_id,
+u.admin,
+u.banned,
+u.show_avatars,
+u.send_notifications_to_email,
+u.published,
+(select count(*) from post p where p.creator_id = u.id) as number_of_posts,
+(select coalesce(sum(score), 0) from post p, post_like pl where u.id = p.creator_id and p.id = pl.post_id) as post_score,
+(select count(*) from comment c where c.creator_id = u.id) as number_of_comments,
+(select coalesce(sum(score), 0) from comment c, comment_like cl where u.id = c.creator_id and c.id = cl.comment_id) as comment_score
+from user_ u;
+
+create materialized view user_mview as select * from user_view;
+
+create unique index idx_user_mview_id on user_mview (id);
+
+-- community_view
+drop view community_aggregates_view cascade;
+create view community_aggregates_view as
+select c.*,
+(select name from user_ u where c.creator_id = u.id) as creator_name,
+(select avatar from user_ u where c.creator_id = u.id) as creator_avatar,
+(select name from category ct where c.category_id = ct.id) as category_name,
+(select count(*) from community_follower cf where cf.community_id = c.id) as number_of_subscribers,
+(select count(*) from post p where p.community_id = c.id) as number_of_posts,
+(select count(*) from comment co, post p where c.id = p.community_id and p.id = co.post_id) as number_of_comments,
+hot_rank((select count(*) from community_follower cf where cf.community_id = c.id), c.published) as hot_rank
+from community c;
+
+create materialized view community_aggregates_mview as select * from community_aggregates_view;
+
+create unique index idx_community_aggregates_mview_id on community_aggregates_mview (id);
+
+create view community_view as
+with all_community as
+(
+  select
+  ca.*
+  from community_aggregates_view ca
+)
+
+select
+ac.*,
+u.id as user_id,
+(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
+from user_ u
+cross join all_community ac
+
+union all
+
+select 
+ac.*,
+null as user_id,
+null as subscribed
+from all_community ac
+;
+
+create view community_mview as
+with all_community as
+(
+  select
+  ca.*
+  from community_aggregates_mview ca
+)
+
+select
+ac.*,
+u.id as user_id,
+(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
+from user_ u
+cross join all_community ac
+
+union all
+
+select 
+ac.*,
+null as user_id,
+null as subscribed
+from all_community ac
+;
+
+-- community views
+drop view community_moderator_view;
+drop view community_follower_view;
+drop view community_user_ban_view;
+
+create view community_moderator_view as 
+select *,
+(select name from user_ u where cm.user_id = u.id) as user_name,
+(select avatar from user_ u where cm.user_id = u.id),
+(select name from community c where cm.community_id = c.id) as community_name
+from community_moderator cm;
+
+create view community_follower_view as 
+select *,
+(select name from user_ u where cf.user_id = u.id) as user_name,
+(select avatar from user_ u where cf.user_id = u.id),
+(select name from community c where cf.community_id = c.id) as community_name
+from community_follower cf;
+
+create view community_user_ban_view as 
+select *,
+(select name from user_ u where cm.user_id = u.id) as user_name,
+(select avatar from user_ u where cm.user_id = u.id),
+(select name from community c where cm.community_id = c.id) as community_name
+from community_user_ban cm;
+
+-- post_view
+drop view post_view;
+drop view post_mview;
+drop materialized view post_aggregates_mview;
+drop view post_aggregates_view;
+
+-- regen post view
+create view post_aggregates_view as
+select        
+p.*,
+(select u.banned from user_ u where p.creator_id = u.id) as banned,
+(select cb.id::bool from community_user_ban cb where p.creator_id = cb.user_id and p.community_id = cb.community_id) as banned_from_community,
+(select name from user_ where p.creator_id = user_.id) as creator_name,
+(select avatar from user_ where p.creator_id = user_.id) as creator_avatar,
+(select name from community where p.community_id = community.id) as community_name,
+(select removed from community c where p.community_id = c.id) as community_removed,
+(select deleted from community c where p.community_id = c.id) as community_deleted,
+(select nsfw from community c where p.community_id = c.id) as community_nsfw,
+(select count(*) from comment where comment.post_id = p.id) as number_of_comments,
+coalesce(sum(pl.score), 0) as score,
+count (case when pl.score = 1 then 1 else null end) as upvotes,
+count (case when pl.score = -1 then 1 else null end) as downvotes,
+hot_rank(coalesce(sum(pl.score) , 0), 
+  (
+    case when (p.published < ('now'::timestamp - '1 month'::interval)) then p.published -- Prevents necro-bumps
+    else greatest(c.recent_comment_time, p.published)
+    end
+  )
+) as hot_rank,
+(
+  case when (p.published < ('now'::timestamp - '1 month'::interval)) then p.published -- Prevents necro-bumps
+  else greatest(c.recent_comment_time, p.published)
+  end
+) as newest_activity_time
+from post p
+left join post_like pl on p.id = pl.post_id
+left join (
+  select post_id, 
+  max(published) as recent_comment_time
+  from comment
+  group by 1
+) c on p.id = c.post_id
+group by p.id, c.recent_comment_time;
+
+create materialized view post_aggregates_mview as select * from post_aggregates_view;
+
+create unique index idx_post_aggregates_mview_id on post_aggregates_mview (id);
+
+create view post_view as 
+with all_post as (
+  select
+  pa.*
+  from post_aggregates_view pa
+)
+select
+ap.*,
+u.id as user_id,
+coalesce(pl.score, 0) as my_vote,
+(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
+(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
+(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
+from user_ u
+cross join all_post ap
+left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
+
+union all
+
+select 
+ap.*,
+null as user_id,
+null as my_vote,
+null as subscribed,
+null as read,
+null as saved
+from all_post ap
+;
+
+create view post_mview as 
+with all_post as (
+  select
+  pa.*
+  from post_aggregates_mview pa
+)
+select
+ap.*,
+u.id as user_id,
+coalesce(pl.score, 0) as my_vote,
+(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
+(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
+(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
+from user_ u
+cross join all_post ap
+left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
+
+union all
+
+select 
+ap.*,
+null as user_id,
+null as my_vote,
+null as subscribed,
+null as read,
+null as saved
+from all_post ap
+;
+
+
+-- reply_view, comment_view, user_mention
+drop view reply_view;
+drop view user_mention_view;
+drop view user_mention_mview;
+drop view comment_view;
+drop view comment_mview;
+drop materialized view comment_aggregates_mview;
+drop view comment_aggregates_view;
+
+-- reply and comment view
+create view comment_aggregates_view as
+select        
+c.*,
+(select community_id from post p where p.id = c.post_id),
+(select co.name from post p, community co where p.id = c.post_id and p.community_id = co.id) as community_name,
+(select u.banned from user_ u where c.creator_id = u.id) as banned,
+(select cb.id::bool from community_user_ban cb, post p where c.creator_id = cb.user_id and p.id = c.post_id and p.community_id = cb.community_id) as banned_from_community,
+(select name from user_ where c.creator_id = user_.id) as creator_name,
+(select avatar from user_ where c.creator_id = user_.id) as creator_avatar,
+coalesce(sum(cl.score), 0) as score,
+count (case when cl.score = 1 then 1 else null end) as upvotes,
+count (case when cl.score = -1 then 1 else null end) as downvotes,
+hot_rank(coalesce(sum(cl.score) , 0), c.published) as hot_rank
+from comment c
+left join comment_like cl on c.id = cl.comment_id
+group by c.id;
+
+create materialized view comment_aggregates_mview as select * from comment_aggregates_view;
+
+create unique index idx_comment_aggregates_mview_id on comment_aggregates_mview (id);
+
+create view comment_view as
+with all_comment as
+(
+  select
+  ca.*
+  from comment_aggregates_view ca
+)
+
+select
+ac.*,
+u.id as user_id,
+coalesce(cl.score, 0) as my_vote,
+(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.community_id = cf.community_id) as subscribed,
+(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
+from user_ u
+cross join all_comment ac
+left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
+
+union all
+
+select 
+    ac.*,
+    null as user_id, 
+    null as my_vote,
+    null as subscribed,
+    null as saved
+from all_comment ac
+;
+
+create view comment_mview as
+with all_comment as
+(
+  select
+  ca.*
+  from comment_aggregates_mview ca
+)
+
+select
+ac.*,
+u.id as user_id,
+coalesce(cl.score, 0) as my_vote,
+(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.community_id = cf.community_id) as subscribed,
+(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
+from user_ u
+cross join all_comment ac
+left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
+
+union all
+
+select 
+    ac.*,
+    null as user_id, 
+    null as my_vote,
+    null as subscribed,
+    null as saved
+from all_comment ac
+;
+
+-- Do the reply_view referencing the comment_mview
+create view reply_view as 
+with closereply as (
+    select 
+    c2.id, 
+    c2.creator_id as sender_id, 
+    c.creator_id as recipient_id
+    from comment c
+    inner join comment c2 on c.id = c2.parent_id
+    where c2.creator_id != c.creator_id
+    -- Do union where post is null
+    union
+    select
+    c.id,
+    c.creator_id as sender_id,
+    p.creator_id as recipient_id
+    from comment c, post p
+    where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
+)
+select cv.*,
+closereply.recipient_id
+from comment_mview cv, closereply
+where closereply.id = cv.id
+;
+
+-- user mention
+create view user_mention_view as
+select 
+    c.id,
+    um.id as user_mention_id,
+    c.creator_id,
+    c.post_id,
+    c.parent_id,
+    c.content,
+    c.removed,
+    um.read,
+    c.published,
+    c.updated,
+    c.deleted,
+    c.community_id,
+    c.community_name,
+    c.banned,
+    c.banned_from_community,
+    c.creator_name,
+    c.creator_avatar,
+    c.score,
+    c.upvotes,
+    c.downvotes,
+    c.hot_rank,
+    c.user_id,
+    c.my_vote,
+    c.saved,
+    um.recipient_id
+from user_mention um, comment_view c
+where um.comment_id = c.id;
+
+
+create view user_mention_mview as 
+with all_comment as
+(
+  select
+  ca.*
+  from comment_aggregates_mview ca
+)
+
+select
+    ac.id,
+    um.id as user_mention_id,
+    ac.creator_id,
+    ac.post_id,
+    ac.parent_id,
+    ac.content,
+    ac.removed,
+    um.read,
+    ac.published,
+    ac.updated,
+    ac.deleted,
+    ac.community_id,
+    ac.community_name,
+    ac.banned,
+    ac.banned_from_community,
+    ac.creator_name,
+    ac.creator_avatar,
+    ac.score,
+    ac.upvotes,
+    ac.downvotes,
+    ac.hot_rank,
+    u.id as user_id,
+    coalesce(cl.score, 0) as my_vote,
+    (select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved,
+    um.recipient_id
+from user_ u
+cross join all_comment ac
+left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
+left join user_mention um on um.comment_id = ac.id
+
+union all
+
+select 
+    ac.id,
+    um.id as user_mention_id,
+    ac.creator_id,
+    ac.post_id,
+    ac.parent_id,
+    ac.content,
+    ac.removed,
+    um.read,
+    ac.published,
+    ac.updated,
+    ac.deleted,
+    ac.community_id,
+    ac.community_name,
+    ac.banned,
+    ac.banned_from_community,
+    ac.creator_name,
+    ac.creator_avatar,
+    ac.score,
+    ac.upvotes,
+    ac.downvotes,
+    ac.hot_rank,
+    null as user_id, 
+    null as my_vote,
+    null as saved,
+    um.recipient_id
+from all_comment ac
+left join user_mention um on um.comment_id = ac.id
+;
+

server/migrations/2020-04-14-163701_update_views_for_activitypub/up.sql

@@ -0,0 +1,497 @@
+-- user_view
+drop view user_view cascade;
+
+create view user_view as 
+select 
+u.id,
+u.actor_id,
+u.name,
+u.avatar,
+u.email,
+u.matrix_user_id,
+u.bio,
+u.local,
+u.admin,
+u.banned,
+u.show_avatars,
+u.send_notifications_to_email,
+u.published,
+(select count(*) from post p where p.creator_id = u.id) as number_of_posts,
+(select coalesce(sum(score), 0) from post p, post_like pl where u.id = p.creator_id and p.id = pl.post_id) as post_score,
+(select count(*) from comment c where c.creator_id = u.id) as number_of_comments,
+(select coalesce(sum(score), 0) from comment c, comment_like cl where u.id = c.creator_id and c.id = cl.comment_id) as comment_score
+from user_ u;
+
+create materialized view user_mview as select * from user_view;
+
+create unique index idx_user_mview_id on user_mview (id);
+
+-- community_view
+drop view community_aggregates_view cascade;
+create view community_aggregates_view as
+-- Now that there's public and private keys, you have to be explicit here
+select c.id,
+c.name,
+c.title,
+c.description,
+c.category_id,
+c.creator_id,
+c.removed,
+c.published,
+c.updated,
+c.deleted,
+c.nsfw,
+c.actor_id,
+c.local,
+c.last_refreshed_at,
+(select actor_id from user_ u where c.creator_id = u.id) as creator_actor_id,
+(select local from user_ u where c.creator_id = u.id) as creator_local,
+(select name from user_ u where c.creator_id = u.id) as creator_name,
+(select avatar from user_ u where c.creator_id = u.id) as creator_avatar,
+(select name from category ct where c.category_id = ct.id) as category_name,
+(select count(*) from community_follower cf where cf.community_id = c.id) as number_of_subscribers,
+(select count(*) from post p where p.community_id = c.id) as number_of_posts,
+(select count(*) from comment co, post p where c.id = p.community_id and p.id = co.post_id) as number_of_comments,
+hot_rank((select count(*) from community_follower cf where cf.community_id = c.id), c.published) as hot_rank
+from community c;
+
+create materialized view community_aggregates_mview as select * from community_aggregates_view;
+
+create unique index idx_community_aggregates_mview_id on community_aggregates_mview (id);
+
+create view community_view as
+with all_community as
+(
+  select
+  ca.*
+  from community_aggregates_view ca
+)
+
+select
+ac.*,
+u.id as user_id,
+(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
+from user_ u
+cross join all_community ac
+
+union all
+
+select 
+ac.*,
+null as user_id,
+null as subscribed
+from all_community ac
+;
+
+create view community_mview as
+with all_community as
+(
+  select
+  ca.*
+  from community_aggregates_mview ca
+)
+
+select
+ac.*,
+u.id as user_id,
+(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
+from user_ u
+cross join all_community ac
+
+union all
+
+select 
+ac.*,
+null as user_id,
+null as subscribed
+from all_community ac
+;
+
+-- community views
+drop view community_moderator_view;
+drop view community_follower_view;
+drop view community_user_ban_view;
+
+create view community_moderator_view as 
+select *,
+(select actor_id from user_ u where cm.user_id = u.id) as user_actor_id,
+(select local from user_ u where cm.user_id = u.id) as user_local,
+(select name from user_ u where cm.user_id = u.id) as user_name,
+(select avatar from user_ u where cm.user_id = u.id),
+(select actor_id from community c where cm.community_id = c.id) as community_actor_id,
+(select local from community c where cm.community_id = c.id) as community_local,
+(select name from community c where cm.community_id = c.id) as community_name
+from community_moderator cm;
+
+create view community_follower_view as 
+select *,
+(select actor_id from user_ u where cf.user_id = u.id) as user_actor_id,
+(select local from user_ u where cf.user_id = u.id) as user_local,
+(select name from user_ u where cf.user_id = u.id) as user_name,
+(select avatar from user_ u where cf.user_id = u.id),
+(select actor_id from community c where cf.community_id = c.id) as community_actor_id,
+(select local from community c where cf.community_id = c.id) as community_local,
+(select name from community c where cf.community_id = c.id) as community_name
+from community_follower cf;
+
+create view community_user_ban_view as 
+select *,
+(select actor_id from user_ u where cm.user_id = u.id) as user_actor_id,
+(select local from user_ u where cm.user_id = u.id) as user_local,
+(select name from user_ u where cm.user_id = u.id) as user_name,
+(select avatar from user_ u where cm.user_id = u.id),
+(select actor_id from community c where cm.community_id = c.id) as community_actor_id,
+(select local from community c where cm.community_id = c.id) as community_local,
+(select name from community c where cm.community_id = c.id) as community_name
+from community_user_ban cm;
+
+-- post_view
+drop view post_view;
+drop view post_mview;
+drop materialized view post_aggregates_mview;
+drop view post_aggregates_view;
+
+-- regen post view
+create view post_aggregates_view as
+select        
+p.*,
+(select u.banned from user_ u where p.creator_id = u.id) as banned,
+(select cb.id::bool from community_user_ban cb where p.creator_id = cb.user_id and p.community_id = cb.community_id) as banned_from_community,
+(select actor_id from user_ where p.creator_id = user_.id) as creator_actor_id,
+(select local from user_ where p.creator_id = user_.id) as creator_local,
+(select name from user_ where p.creator_id = user_.id) as creator_name,
+(select avatar from user_ where p.creator_id = user_.id) as creator_avatar,
+(select actor_id from community where p.community_id = community.id) as community_actor_id,
+(select local from community where p.community_id = community.id) as community_local,
+(select name from community where p.community_id = community.id) as community_name,
+(select removed from community c where p.community_id = c.id) as community_removed,
+(select deleted from community c where p.community_id = c.id) as community_deleted,
+(select nsfw from community c where p.community_id = c.id) as community_nsfw,
+(select count(*) from comment where comment.post_id = p.id) as number_of_comments,
+coalesce(sum(pl.score), 0) as score,
+count (case when pl.score = 1 then 1 else null end) as upvotes,
+count (case when pl.score = -1 then 1 else null end) as downvotes,
+hot_rank(coalesce(sum(pl.score) , 0), 
+  (
+    case when (p.published < ('now'::timestamp - '1 month'::interval)) then p.published -- Prevents necro-bumps
+    else greatest(c.recent_comment_time, p.published)
+    end
+  )
+) as hot_rank,
+(
+  case when (p.published < ('now'::timestamp - '1 month'::interval)) then p.published -- Prevents necro-bumps
+  else greatest(c.recent_comment_time, p.published)
+  end
+) as newest_activity_time
+from post p
+left join post_like pl on p.id = pl.post_id
+left join (
+  select post_id, 
+  max(published) as recent_comment_time
+  from comment
+  group by 1
+) c on p.id = c.post_id
+group by p.id, c.recent_comment_time;
+
+create materialized view post_aggregates_mview as select * from post_aggregates_view;
+
+create unique index idx_post_aggregates_mview_id on post_aggregates_mview (id);
+
+create view post_view as 
+with all_post as (
+  select
+  pa.*
+  from post_aggregates_view pa
+)
+select
+ap.*,
+u.id as user_id,
+coalesce(pl.score, 0) as my_vote,
+(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
+(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
+(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
+from user_ u
+cross join all_post ap
+left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
+
+union all
+
+select 
+ap.*,
+null as user_id,
+null as my_vote,
+null as subscribed,
+null as read,
+null as saved
+from all_post ap
+;
+
+create view post_mview as 
+with all_post as (
+  select
+  pa.*
+  from post_aggregates_mview pa
+)
+select
+ap.*,
+u.id as user_id,
+coalesce(pl.score, 0) as my_vote,
+(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
+(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
+(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
+from user_ u
+cross join all_post ap
+left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
+
+union all
+
+select 
+ap.*,
+null as user_id,
+null as my_vote,
+null as subscribed,
+null as read,
+null as saved
+from all_post ap
+;
+
+
+-- reply_view, comment_view, user_mention
+drop view reply_view;
+drop view user_mention_view;
+drop view user_mention_mview;
+drop view comment_view;
+drop view comment_mview;
+drop materialized view comment_aggregates_mview;
+drop view comment_aggregates_view;
+
+-- reply and comment view
+create view comment_aggregates_view as
+select        
+c.*,
+(select community_id from post p where p.id = c.post_id),
+(select co.actor_id from post p, community co where p.id = c.post_id and p.community_id = co.id) as community_actor_id,
+(select co.local from post p, community co where p.id = c.post_id and p.community_id = co.id) as community_local,
+(select co.name from post p, community co where p.id = c.post_id and p.community_id = co.id) as community_name,
+(select u.banned from user_ u where c.creator_id = u.id) as banned,
+(select cb.id::bool from community_user_ban cb, post p where c.creator_id = cb.user_id and p.id = c.post_id and p.community_id = cb.community_id) as banned_from_community,
+(select actor_id from user_ where c.creator_id = user_.id) as creator_actor_id,
+(select local from user_ where c.creator_id = user_.id) as creator_local,
+(select name from user_ where c.creator_id = user_.id) as creator_name,
+(select avatar from user_ where c.creator_id = user_.id) as creator_avatar,
+coalesce(sum(cl.score), 0) as score,
+count (case when cl.score = 1 then 1 else null end) as upvotes,
+count (case when cl.score = -1 then 1 else null end) as downvotes,
+hot_rank(coalesce(sum(cl.score) , 0), c.published) as hot_rank
+from comment c
+left join comment_like cl on c.id = cl.comment_id
+group by c.id;
+
+create materialized view comment_aggregates_mview as select * from comment_aggregates_view;
+
+create unique index idx_comment_aggregates_mview_id on comment_aggregates_mview (id);
+
+create view comment_view as
+with all_comment as
+(
+  select
+  ca.*
+  from comment_aggregates_view ca
+)
+
+select
+ac.*,
+u.id as user_id,
+coalesce(cl.score, 0) as my_vote,
+(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.community_id = cf.community_id) as subscribed,
+(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
+from user_ u
+cross join all_comment ac
+left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
+
+union all
+
+select 
+    ac.*,
+    null as user_id, 
+    null as my_vote,
+    null as subscribed,
+    null as saved
+from all_comment ac
+;
+
+create view comment_mview as
+with all_comment as
+(
+  select
+  ca.*
+  from comment_aggregates_mview ca
+)
+
+select
+ac.*,
+u.id as user_id,
+coalesce(cl.score, 0) as my_vote,
+(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.community_id = cf.community_id) as subscribed,
+(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
+from user_ u
+cross join all_comment ac
+left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
+
+union all
+
+select 
+    ac.*,
+    null as user_id, 
+    null as my_vote,
+    null as subscribed,
+    null as saved
+from all_comment ac
+;
+
+-- Do the reply_view referencing the comment_mview
+create view reply_view as 
+with closereply as (
+    select 
+    c2.id, 
+    c2.creator_id as sender_id, 
+    c.creator_id as recipient_id
+    from comment c
+    inner join comment c2 on c.id = c2.parent_id
+    where c2.creator_id != c.creator_id
+    -- Do union where post is null
+    union
+    select
+    c.id,
+    c.creator_id as sender_id,
+    p.creator_id as recipient_id
+    from comment c, post p
+    where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
+)
+select cv.*,
+closereply.recipient_id
+from comment_mview cv, closereply
+where closereply.id = cv.id
+;
+
+-- user mention
+create view user_mention_view as
+select 
+    c.id,
+    um.id as user_mention_id,
+    c.creator_id,
+    c.creator_actor_id,
+    c.creator_local,
+    c.post_id,
+    c.parent_id,
+    c.content,
+    c.removed,
+    um.read,
+    c.published,
+    c.updated,
+    c.deleted,
+    c.community_id,
+    c.community_actor_id,
+    c.community_local,
+    c.community_name,
+    c.banned,
+    c.banned_from_community,
+    c.creator_name,
+    c.creator_avatar,
+    c.score,
+    c.upvotes,
+    c.downvotes,
+    c.hot_rank,
+    c.user_id,
+    c.my_vote,
+    c.saved,
+    um.recipient_id,
+    (select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
+    (select local from user_ u where u.id = um.recipient_id) as recipient_local
+from user_mention um, comment_view c
+where um.comment_id = c.id;
+
+
+create view user_mention_mview as 
+with all_comment as
+(
+  select
+  ca.*
+  from comment_aggregates_mview ca
+)
+
+select
+    ac.id,
+    um.id as user_mention_id,
+    ac.creator_id,
+    ac.creator_actor_id,
+    ac.creator_local,
+    ac.post_id,
+    ac.parent_id,
+    ac.content,
+    ac.removed,
+    um.read,
+    ac.published,
+    ac.updated,
+    ac.deleted,
+    ac.community_id,
+    ac.community_actor_id,
+    ac.community_local,
+    ac.community_name,
+    ac.banned,
+    ac.banned_from_community,
+    ac.creator_name,
+    ac.creator_avatar,
+    ac.score,
+    ac.upvotes,
+    ac.downvotes,
+    ac.hot_rank,
+    u.id as user_id,
+    coalesce(cl.score, 0) as my_vote,
+    (select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved,
+    um.recipient_id,
+    (select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
+    (select local from user_ u where u.id = um.recipient_id) as recipient_local
+from user_ u
+cross join all_comment ac
+left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
+left join user_mention um on um.comment_id = ac.id
+
+union all
+
+select 
+    ac.id,
+    um.id as user_mention_id,
+    ac.creator_id,
+    ac.creator_actor_id,
+    ac.creator_local,
+    ac.post_id,
+    ac.parent_id,
+    ac.content,
+    ac.removed,
+    um.read,
+    ac.published,
+    ac.updated,
+    ac.deleted,
+    ac.community_id,
+    ac.community_actor_id,
+    ac.community_local,
+    ac.community_name,
+    ac.banned,
+    ac.banned_from_community,
+    ac.creator_name,
+    ac.creator_avatar,
+    ac.score,
+    ac.upvotes,
+    ac.downvotes,
+    ac.hot_rank,
+    null as user_id, 
+    null as my_vote,
+    null as saved,
+    um.recipient_id,
+    (select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
+    (select local from user_ u where u.id = um.recipient_id) as recipient_local
+from all_comment ac
+left join user_mention um on um.comment_id = ac.id
+;
+

server/migrations/2020-04-21-123957_remove_unique_user_constraints/down.sql

@@ -0,0 +1,4 @@
+-- The username index
+drop index idx_user_name_lower_actor_id;
+create unique index idx_user_name_lower on user_ (lower(name));
+

server/migrations/2020-04-21-123957_remove_unique_user_constraints/up.sql

@@ -0,0 +1,2 @@
+drop index idx_user_name_lower;
+create unique index idx_user_name_lower_actor_id on user_ (lower(name), lower(actor_id));

server/migrations/2020-05-05-210233_add_activitypub_for_private_messages/down.sql

@@ -0,0 +1,21 @@
+drop materialized view private_message_mview;
+drop view private_message_view;
+
+alter table private_message 
+drop column ap_id, 
+drop column local;
+
+create view private_message_view as 
+select        
+pm.*,
+u.name as creator_name,
+u.avatar as creator_avatar,
+u2.name as recipient_name,
+u2.avatar as recipient_avatar
+from private_message pm
+inner join user_ u on u.id = pm.creator_id
+inner join user_ u2 on u2.id = pm.recipient_id;
+
+create materialized view private_message_mview as select * from private_message_view;
+
+create unique index idx_private_message_mview_id on private_message_mview (id);

server/migrations/2020-05-05-210233_add_activitypub_for_private_messages/up.sql

@@ -0,0 +1,25 @@
+alter table private_message
+add column ap_id character varying(255) not null default 'changeme', -- This needs to be checked and updated in code, building from the site url if local
+add column local boolean not null default true
+;
+
+drop materialized view private_message_mview;
+drop view private_message_view;
+create view private_message_view as 
+select        
+pm.*,
+u.name as creator_name,
+u.avatar as creator_avatar,
+u.actor_id as creator_actor_id,
+u.local as creator_local,
+u2.name as recipient_name,
+u2.avatar as recipient_avatar,
+u2.actor_id as recipient_actor_id,
+u2.local as recipient_local
+from private_message pm
+inner join user_ u on u.id = pm.creator_id
+inner join user_ u2 on u2.id = pm.recipient_id;
+
+create materialized view private_message_mview as select * from private_message_view;
+
+create unique index idx_private_message_mview_id on private_message_mview (id);

server/src/api/comment.rs

@@ -1,4 +1,42 @@
-use super::*;
+use crate::{
+  api::{APIError, Oper, Perform},
+  apub::{ApubLikeableType, ApubObjectType},
+  db::{
+    comment::*,
+    comment_view::*,
+    community_view::*,
+    moderator::*,
+    post::*,
+    site_view::*,
+    user::*,
+    user_mention::*,
+    user_view::*,
+    Crud,
+    Likeable,
+    ListingType,
+    Saveable,
+    SortType,
+  },
+  naive_now,
+  remove_slurs,
+  scrape_text_for_mentions,
+  send_email,
+  settings::Settings,
+  websocket::{
+    server::{JoinCommunityRoom, SendComment},
+    UserOperation,
+    WebsocketInfo,
+  },
+  MentionData,
+};
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
+use failure::Error;
+use log::error;
+use serde::{Deserialize, Serialize};
+use std::str::FromStr;
 
 #[derive(Serialize, Deserialize)]
 pub struct CreateComment {
@@ -76,8 +114,6 @@ impl Perform for Oper<CreateComment> {
 
     let user_id = claims.id;
 
-    let hostname = &format!("https://{}", Settings::get().hostname);
-
     let conn = pool.get()?;
 
     // Check for a community ban
@@ -87,7 +123,8 @@ impl Perform for Oper<CreateComment> {
     }
 
     // Check for a site ban
-    if UserView::read(&conn, user_id)?.banned {
+    let user = User_::read(&conn, user_id)?;
+    if user.banned {
       return Err(APIError::err("site_ban").into());
     }
 
@@ -101,7 +138,10 @@ impl Perform for Oper<CreateComment> {
       removed: None,
       deleted: None,
       read: None,
+      published: None,
       updated: None,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     let inserted_comment = match Comment::create(&conn, &comment_form) {
@@ -109,107 +149,16 @@ impl Perform for Oper<CreateComment> {
       Err(_e) => return Err(APIError::err("couldnt_create_comment").into()),
     };
 
-    let mut recipient_ids = Vec::new();
+    let updated_comment = match Comment::update_ap_id(&conn, inserted_comment.id) {
+      Ok(comment) => comment,
+      Err(_e) => return Err(APIError::err("couldnt_create_comment").into()),
+    };
+
+    updated_comment.send_create(&user, &conn)?;
 
     // Scan the comment for user mentions, add those rows
-    let extracted_usernames = extract_usernames(&comment_form.content);
-
-    for username_mention in &extracted_usernames {
-      if let Ok(mention_user) = User_::read_from_name(&conn, (*username_mention).to_string()) {
-        // You can't mention yourself
-        // At some point, make it so you can't tag the parent creator either
-        // This can cause two notifications, one for reply and the other for mention
-        if mention_user.id != user_id {
-          recipient_ids.push(mention_user.id);
-
-          let user_mention_form = UserMentionForm {
-            recipient_id: mention_user.id,
-            comment_id: inserted_comment.id,
-            read: None,
-          };
-
-          // Allow this to fail softly, since comment edits might re-update or replace it
-          // Let the uniqueness handle this fail
-          match UserMention::create(&conn, &user_mention_form) {
-            Ok(_mention) => (),
-            Err(_e) => error!("{}", &_e),
-          };
-
-          // Send an email to those users that have notifications on
-          if mention_user.send_notifications_to_email {
-            if let Some(mention_email) = mention_user.email {
-              let subject = &format!(
-                "{} - Mentioned by {}",
-                Settings::get().hostname,
-                claims.username
-              );
-              let html = &format!(
-                "<h1>User Mention</h1><br><div>{} - {}</div><br><a href={}/inbox>inbox</a>",
-                claims.username, comment_form.content, hostname
-              );
-              match send_email(subject, &mention_email, &mention_user.name, html) {
-                Ok(_o) => _o,
-                Err(e) => error!("{}", e),
-              };
-            }
-          }
-        }
-      }
-    }
-
-    // Send notifs to the parent commenter / poster
-    match data.parent_id {
-      Some(parent_id) => {
-        let parent_comment = Comment::read(&conn, parent_id)?;
-        if parent_comment.creator_id != user_id {
-          let parent_user = User_::read(&conn, parent_comment.creator_id)?;
-          recipient_ids.push(parent_user.id);
-
-          if parent_user.send_notifications_to_email {
-            if let Some(comment_reply_email) = parent_user.email {
-              let subject = &format!(
-                "{} - Reply from {}",
-                Settings::get().hostname,
-                claims.username
-              );
-              let html = &format!(
-                "<h1>Comment Reply</h1><br><div>{} - {}</div><br><a href={}/inbox>inbox</a>",
-                claims.username, comment_form.content, hostname
-              );
-              match send_email(subject, &comment_reply_email, &parent_user.name, html) {
-                Ok(_o) => _o,
-                Err(e) => error!("{}", e),
-              };
-            }
-          }
-        }
-      }
-      // Its a post
-      None => {
-        if post.creator_id != user_id {
-          let parent_user = User_::read(&conn, post.creator_id)?;
-          recipient_ids.push(parent_user.id);
-
-          if parent_user.send_notifications_to_email {
-            if let Some(post_reply_email) = parent_user.email {
-              let subject = &format!(
-                "{} - Reply from {}",
-                Settings::get().hostname,
-                claims.username
-              );
-              let html = &format!(
-                "<h1>Post Reply</h1><br><div>{} - {}</div><br><a href={}/inbox>inbox</a>",
-                claims.username, comment_form.content, hostname
-              );
-              match send_email(subject, &post_reply_email, &parent_user.name, html) {
-                Ok(_o) => _o,
-                Err(e) => error!("{}", e),
-              };
-            }
-          }
-        }
-      }
-    };
+    let mentions = scrape_text_for_mentions(&comment_form.content);
+    let recipient_ids = send_local_notifs(&conn, &mentions, &updated_comment, &user, &post);
 
     // You like your own comment by default
     let like_form = CommentLikeForm {
@@ -224,6 +173,8 @@ impl Perform for Oper<CreateComment> {
       Err(_e) => return Err(APIError::err("couldnt_like_comment").into()),
     };
 
+    updated_comment.send_like(&user, &conn)?;
+
     let comment_view = CommentView::read(&conn, inserted_comment.id, Some(user_id))?;
 
     let mut res = CommentResponse {
@@ -266,6 +217,8 @@ impl Perform for Oper<EditComment> {
 
     let conn = pool.get()?;
 
+    let user = User_::read(&conn, user_id)?;
+
     let orig_comment = CommentView::read(&conn, data.edit_id, None)?;
 
     // You are allowed to mark the comment as read even if you're banned.
@@ -290,13 +243,15 @@ impl Perform for Oper<EditComment> {
       }
 
       // Check for a site ban
-      if UserView::read(&conn, user_id)?.banned {
+      if user.banned {
         return Err(APIError::err("site_ban").into());
       }
     }
 
     let content_slurs_removed = remove_slurs(&data.content.to_owned());
 
+    let read_comment = Comment::read(&conn, data.edit_id)?;
+
     let comment_form = CommentForm {
       content: content_slurs_removed,
       parent_id: data.parent_id,
@@ -305,65 +260,41 @@ impl Perform for Oper<EditComment> {
       removed: data.removed.to_owned(),
       deleted: data.deleted.to_owned(),
       read: data.read.to_owned(),
+      published: None,
       updated: if data.read.is_some() {
         orig_comment.updated
       } else {
         Some(naive_now())
       },
+      ap_id: read_comment.ap_id,
+      local: read_comment.local,
     };
 
-    let _updated_comment = match Comment::update(&conn, data.edit_id, &comment_form) {
+    let updated_comment = match Comment::update(&conn, data.edit_id, &comment_form) {
       Ok(comment) => comment,
       Err(_e) => return Err(APIError::err("couldnt_update_comment").into()),
     };
 
-    let mut recipient_ids = Vec::new();
-
-    // Scan the comment for user mentions, add those rows
-    let extracted_usernames = extract_usernames(&comment_form.content);
-
-    for username_mention in &extracted_usernames {
-      let mention_user = User_::read_from_name(&conn, (*username_mention).to_string());
-
-      if mention_user.is_ok() {
-        let mention_user_id = mention_user?.id;
-
-        // You can't mention yourself
-        // At some point, make it so you can't tag the parent creator either
-        // This can cause two notifications, one for reply and the other for mention
-        if mention_user_id != user_id {
-          recipient_ids.push(mention_user_id);
-
-          let user_mention_form = UserMentionForm {
-            recipient_id: mention_user_id,
-            comment_id: data.edit_id,
-            read: None,
-          };
-
-          // Allow this to fail softly, since comment edits might re-update or replace it
-          // Let the uniqueness handle this fail
-          match UserMention::create(&conn, &user_mention_form) {
-            Ok(_mention) => (),
-            Err(_e) => error!("{}", &_e),
-          }
-        }
+    if let Some(deleted) = data.deleted.to_owned() {
+      if deleted {
+        updated_comment.send_delete(&user, &conn)?;
+      } else {
+        updated_comment.send_undo_delete(&user, &conn)?;
       }
+    } else if let Some(removed) = data.removed.to_owned() {
+      if removed {
+        updated_comment.send_remove(&user, &conn)?;
+      } else {
+        updated_comment.send_undo_remove(&user, &conn)?;
+      }
+    } else {
+      updated_comment.send_update(&user, &conn)?;
     }
 
-    // Add to recipient ids
-    match data.parent_id {
-      Some(parent_id) => {
-        let parent_comment = Comment::read(&conn, parent_id)?;
-        if parent_comment.creator_id != user_id {
-          let parent_user = User_::read(&conn, parent_comment.creator_id)?;
-          recipient_ids.push(parent_user.id);
-        }
-      }
-      None => {
-        let post = Post::read(&conn, data.post_id)?;
-        recipient_ids.push(post.creator_id);
-      }
-    }
+    let post = Post::read(&conn, data.post_id)?;
+
+    let mentions = scrape_text_for_mentions(&comment_form.content);
+    let recipient_ids = send_local_notifs(&conn, &mentions, &updated_comment, &user, &post);
 
     // Mod tables
     if let Some(removed) = data.removed.to_owned() {
@@ -480,7 +411,8 @@ impl Perform for Oper<CreateCommentLike> {
     }
 
     // Check for a site ban
-    if UserView::read(&conn, user_id)?.banned {
+    let user = User_::read(&conn, user_id)?;
+    if user.banned {
       return Err(APIError::err("site_ban").into());
     }
 
@@ -517,6 +449,14 @@ impl Perform for Oper<CreateCommentLike> {
         Ok(like) => like,
         Err(_e) => return Err(APIError::err("couldnt_like_comment").into()),
       };
+
+      if like_form.score == 1 {
+        comment.send_like(&user, &conn)?;
+      } else if like_form.score == -1 {
+        comment.send_dislike(&user, &conn)?;
+      }
+    } else {
+      comment.send_undo_like(&user, &conn)?;
     }
 
     // Have to refetch the comment to get the current state
@@ -601,3 +541,106 @@ impl Perform for Oper<GetComments> {
     Ok(GetCommentsResponse { comments })
   }
 }
+
+pub fn send_local_notifs(
+  conn: &PgConnection,
+  mentions: &[MentionData],
+  comment: &Comment,
+  user: &User_,
+  post: &Post,
+) -> Vec<i32> {
+  let mut recipient_ids = Vec::new();
+  let hostname = &format!("https://{}", Settings::get().hostname);
+
+  // Send the local mentions
+  for mention in mentions
+    .iter()
+    .filter(|m| m.is_local() && m.name.ne(&user.name))
+    .collect::<Vec<&MentionData>>()
+  {
+    if let Ok(mention_user) = User_::read_from_name(&conn, &mention.name) {
+      // TODO
+      // At some point, make it so you can't tag the parent creator either
+      // This can cause two notifications, one for reply and the other for mention
+      recipient_ids.push(mention_user.id);
+
+      let user_mention_form = UserMentionForm {
+        recipient_id: mention_user.id,
+        comment_id: comment.id,
+        read: None,
+      };
+
+      // Allow this to fail softly, since comment edits might re-update or replace it
+      // Let the uniqueness handle this fail
+      match UserMention::create(&conn, &user_mention_form) {
+        Ok(_mention) => (),
+        Err(_e) => error!("{}", &_e),
+      };
+
+      // Send an email to those users that have notifications on
+      if mention_user.send_notifications_to_email {
+        if let Some(mention_email) = mention_user.email {
+          let subject = &format!("{} - Mentioned by {}", Settings::get().hostname, user.name,);
+          let html = &format!(
+            "<h1>User Mention</h1><br><div>{} - {}</div><br><a href={}/inbox>inbox</a>",
+            user.name, comment.content, hostname
+          );
+          match send_email(subject, &mention_email, &mention_user.name, html) {
+            Ok(_o) => _o,
+            Err(e) => error!("{}", e),
+          };
+        }
+      }
+    }
+  }
+
+  // Send notifs to the parent commenter / poster
+  match comment.parent_id {
+    Some(parent_id) => {
+      if let Ok(parent_comment) = Comment::read(&conn, parent_id) {
+        if parent_comment.creator_id != user.id {
+          if let Ok(parent_user) = User_::read(&conn, parent_comment.creator_id) {
+            recipient_ids.push(parent_user.id);
+
+            if parent_user.send_notifications_to_email {
+              if let Some(comment_reply_email) = parent_user.email {
+                let subject = &format!("{} - Reply from {}", Settings::get().hostname, user.name,);
+                let html = &format!(
+                  "<h1>Comment Reply</h1><br><div>{} - {}</div><br><a href={}/inbox>inbox</a>",
+                  user.name, comment.content, hostname
+                );
+                match send_email(subject, &comment_reply_email, &parent_user.name, html) {
+                  Ok(_o) => _o,
+                  Err(e) => error!("{}", e),
+                };
+              }
+            }
+          }
+        }
+      }
+    }
+    // Its a post
+    None => {
+      if post.creator_id != user.id {
+        if let Ok(parent_user) = User_::read(&conn, post.creator_id) {
+          recipient_ids.push(parent_user.id);
+
+          if parent_user.send_notifications_to_email {
+            if let Some(post_reply_email) = parent_user.email {
+              let subject = &format!("{} - Reply from {}", Settings::get().hostname, user.name,);
+              let html = &format!(
+                "<h1>Post Reply</h1><br><div>{} - {}</div><br><a href={}/inbox>inbox</a>",
+                user.name, comment.content, hostname
+              );
+              match send_email(subject, &post_reply_email, &parent_user.name, html) {
+                Ok(_o) => _o,
+                Err(e) => error!("{}", e),
+              };
+            }
+          }
+        }
+      }
+    }
+  };
+  recipient_ids
+}

server/src/api/community.rs

@@ -1,17 +1,54 @@
-use super::*;
+use crate::{
+  api::{APIError, Oper, Perform},
+  apub::{
+    extensions::signatures::generate_actor_keypair,
+    make_apub_endpoint,
+    ActorType,
+    EndpointType,
+  },
+  db::{
+    community::*,
+    community_view::*,
+    moderator::*,
+    site::*,
+    user::*,
+    user_view::*,
+    Bannable,
+    Crud,
+    Followable,
+    Joinable,
+    SortType,
+  },
+  naive_from_unix,
+  naive_now,
+  slur_check,
+  slurs_vec_to_str,
+  websocket::{
+    server::{JoinCommunityRoom, SendCommunityRoomMessage},
+    UserOperation,
+    WebsocketInfo,
+  },
+};
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
+use failure::Error;
+use serde::{Deserialize, Serialize};
+use std::str::FromStr;
 
 #[derive(Serialize, Deserialize)]
 pub struct GetCommunity {
   id: Option<i32>,
-  name: Option<String>,
+  pub name: Option<String>,
   auth: Option<String>,
 }
 
 #[derive(Serialize, Deserialize)]
 pub struct GetCommunityResponse {
   pub community: CommunityView,
-  moderators: Vec<CommunityModeratorView>,
-  admins: Vec<UserView>,
+  pub moderators: Vec<CommunityModeratorView>,
+  pub admins: Vec<UserView>,
   pub online: usize,
 }
 
@@ -30,17 +67,17 @@ pub struct CommunityResponse {
   pub community: CommunityView,
 }
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct ListCommunities {
-  sort: String,
-  page: Option<i64>,
-  limit: Option<i64>,
-  auth: Option<String>,
+  pub sort: String,
+  pub page: Option<i64>,
+  pub limit: Option<i64>,
+  pub auth: Option<String>,
 }
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct ListCommunitiesResponse {
-  communities: Vec<CommunityView>,
+  pub communities: Vec<CommunityView>,
 }
 
 #[derive(Serialize, Deserialize, Clone)]
@@ -134,25 +171,25 @@ impl Perform for Oper<GetCommunity> {
 
     let conn = pool.get()?;
 
-    let community_id = match data.id {
-      Some(id) => id,
+    let community = match data.id {
+      Some(id) => Community::read(&conn, id)?,
       None => {
         match Community::read_from_name(
           &conn,
-          data.name.to_owned().unwrap_or_else(|| "main".to_string()),
+          &data.name.to_owned().unwrap_or_else(|| "main".to_string()),
         ) {
-          Ok(community) => community.id,
+          Ok(community) => community,
           Err(_e) => return Err(APIError::err("couldnt_find_community").into()),
         }
       }
     };
 
-    let community_view = match CommunityView::read(&conn, community_id, user_id) {
+    let community_view = match CommunityView::read(&conn, community.id, user_id) {
       Ok(community) => community,
       Err(_e) => return Err(APIError::err("couldnt_find_community").into()),
     };
 
-    let moderators = match CommunityModeratorView::for_community(&conn, community_id) {
+    let moderators = match CommunityModeratorView::for_community(&conn, community.id) {
       Ok(moderators) => moderators,
       Err(_e) => return Err(APIError::err("couldnt_find_community").into()),
     };
@@ -165,8 +202,10 @@ impl Perform for Oper<GetCommunity> {
 
     let online = if let Some(ws) = websocket_info {
       if let Some(id) = ws.id {
-        ws.chatserver
-          .do_send(JoinCommunityRoom { community_id, id });
+        ws.chatserver.do_send(JoinCommunityRoom {
+          community_id: community.id,
+          id,
+        });
       }
 
       // TODO
@@ -230,6 +269,8 @@ impl Perform for Oper<CreateCommunity> {
     }
 
     // When you create a community, make sure the user becomes a moderator and a follower
+    let keypair = generate_actor_keypair()?;
+
     let community_form = CommunityForm {
       name: data.name.to_owned(),
       title: data.title.to_owned(),
@@ -240,6 +281,12 @@ impl Perform for Oper<CreateCommunity> {
       deleted: None,
       nsfw: data.nsfw,
       updated: None,
+      actor_id: make_apub_endpoint(EndpointType::Community, &data.name).to_string(),
+      local: true,
+      private_key: Some(keypair.private_key),
+      public_key: Some(keypair.public_key),
+      last_refreshed_at: None,
+      published: None,
     };
 
     let inserted_community = match Community::create(&conn, &community_form) {
@@ -311,7 +358,8 @@ impl Perform for Oper<EditCommunity> {
     let conn = pool.get()?;
 
     // Check for a site ban
-    if UserView::read(&conn, user_id)?.banned {
+    let user = User_::read(&conn, user_id)?;
+    if user.banned {
       return Err(APIError::err("site_ban").into());
     }
 
@@ -328,6 +376,8 @@ impl Perform for Oper<EditCommunity> {
       return Err(APIError::err("no_community_edit_allowed").into());
     }
 
+    let read_community = Community::read(&conn, data.edit_id)?;
+
     let community_form = CommunityForm {
       name: data.name.to_owned(),
       title: data.title.to_owned(),
@@ -338,9 +388,15 @@ impl Perform for Oper<EditCommunity> {
       deleted: data.deleted.to_owned(),
       nsfw: data.nsfw,
       updated: Some(naive_now()),
+      actor_id: read_community.actor_id,
+      local: read_community.local,
+      private_key: read_community.private_key,
+      public_key: read_community.public_key,
+      last_refreshed_at: None,
+      published: None,
     };
 
-    let _updated_community = match Community::update(&conn, data.edit_id, &community_form) {
+    let updated_community = match Community::update(&conn, data.edit_id, &community_form) {
       Ok(community) => community,
       Err(_e) => return Err(APIError::err("couldnt_update_community").into()),
     };
@@ -361,6 +417,20 @@ impl Perform for Oper<EditCommunity> {
       ModRemoveCommunity::create(&conn, &form)?;
     }
 
+    if let Some(deleted) = data.deleted.to_owned() {
+      if deleted {
+        updated_community.send_delete(&user, &conn)?;
+      } else {
+        updated_community.send_undo_delete(&user, &conn)?;
+      }
+    } else if let Some(removed) = data.removed.to_owned() {
+      if removed {
+        updated_community.send_remove(&user, &conn)?;
+      } else {
+        updated_community.send_undo_remove(&user, &conn)?;
+      }
+    }
+
     let community_view = CommunityView::read(&conn, data.edit_id, Some(user_id))?;
 
     let res = CommunityResponse {
@@ -447,23 +517,41 @@ impl Perform for Oper<FollowCommunity> {
 
     let user_id = claims.id;
 
+    let conn = pool.get()?;
+
+    let community = Community::read(&conn, data.community_id)?;
     let community_follower_form = CommunityFollowerForm {
       community_id: data.community_id,
       user_id,
     };
 
-    let conn = pool.get()?;
-
-    if data.follow {
-      match CommunityFollower::follow(&conn, &community_follower_form) {
-        Ok(user) => user,
-        Err(_e) => return Err(APIError::err("community_follower_already_exists").into()),
-      };
+    if community.local {
+      if data.follow {
+        match CommunityFollower::follow(&conn, &community_follower_form) {
+          Ok(user) => user,
+          Err(_e) => return Err(APIError::err("community_follower_already_exists").into()),
+        };
+      } else {
+        match CommunityFollower::unfollow(&conn, &community_follower_form) {
+          Ok(user) => user,
+          Err(_e) => return Err(APIError::err("community_follower_already_exists").into()),
+        };
+      }
     } else {
-      match CommunityFollower::ignore(&conn, &community_follower_form) {
-        Ok(user) => user,
-        Err(_e) => return Err(APIError::err("community_follower_already_exists").into()),
-      };
+      let user = User_::read(&conn, user_id)?;
+
+      if data.follow {
+        // Dont actually add to the community followers here, because you need
+        // to wait for the accept
+        user.send_follow(&community.actor_id, &conn)?;
+      } else {
+        user.send_unfollow(&community.actor_id, &conn)?;
+        match CommunityFollower::unfollow(&conn, &community_follower_form) {
+          Ok(user) => user,
+          Err(_e) => return Err(APIError::err("community_follower_already_exists").into()),
+        };
+      }
+      // TODO: this needs to return a "pending" state, until Accept is received from the remote server
     }
 
     let community_view = CommunityView::read(&conn, data.community_id, Some(user_id))?;
@@ -675,11 +763,17 @@ impl Perform for Oper<TransferCommunity> {
       title: read_community.title,
       description: read_community.description,
       category_id: read_community.category_id,
-      creator_id: data.user_id,
+      creator_id: data.user_id, // This makes the new user the community creator
       removed: None,
       deleted: None,
       nsfw: read_community.nsfw,
       updated: Some(naive_now()),
+      actor_id: read_community.actor_id,
+      local: read_community.local,
+      private_key: read_community.private_key,
+      public_key: read_community.public_key,
+      last_refreshed_at: None,
+      published: None,
     };
 
     let _updated_community = match Community::update(&conn, data.community_id, &community_form) {

server/src/api/mod.rs

@@ -1,42 +1,9 @@
-use crate::db::category::*;
-use crate::db::comment::*;
-use crate::db::comment_view::*;
-use crate::db::community::*;
-use crate::db::community_view::*;
-use crate::db::moderator::*;
-use crate::db::moderator_views::*;
-use crate::db::password_reset_request::*;
-use crate::db::post::*;
-use crate::db::post_view::*;
-use crate::db::private_message::*;
-use crate::db::private_message_view::*;
-use crate::db::site::*;
-use crate::db::site_view::*;
-use crate::db::user::*;
-use crate::db::user_mention::*;
-use crate::db::user_mention_view::*;
-use crate::db::user_view::*;
-use crate::db::*;
-use crate::{
-  extract_usernames, fetch_iframely_and_pictshare_data, generate_random_string, naive_from_unix,
-  naive_now, remove_slurs, send_email, slur_check, slurs_vec_to_str,
+use crate::websocket::WebsocketInfo;
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
 };
-
-use crate::settings::Settings;
-use crate::websocket::UserOperation;
-use crate::websocket::{
-  server::{
-    JoinCommunityRoom, JoinPostRoom, JoinUserRoom, SendAllMessage, SendComment,
-    SendCommunityRoomMessage, SendPost, SendUserRoomMessage,
-  },
-  WebsocketInfo,
-};
-use diesel::r2d2::{ConnectionManager, Pool};
-use diesel::PgConnection;
 use failure::Error;
-use log::{error, info};
-use serde::{Deserialize, Serialize};
-use std::str::FromStr;
 
 pub mod comment;
 pub mod community;
@@ -62,8 +29,8 @@ pub struct Oper<T> {
   data: T,
 }
 
-impl<T> Oper<T> {
-  pub fn new(data: T) -> Oper<T> {
+impl<Data> Oper<Data> {
+  pub fn new(data: Data) -> Oper<Data> {
     Oper { data }
   }
 }

server/src/api/post.rs

@@ -1,6 +1,41 @@
-use super::*;
+use crate::{
+  api::{APIError, Oper, Perform},
+  apub::{ApubLikeableType, ApubObjectType},
+  db::{
+    comment_view::*,
+    community_view::*,
+    moderator::*,
+    post::*,
+    post_view::*,
+    site::*,
+    site_view::*,
+    user::*,
+    user_view::*,
+    Crud,
+    Likeable,
+    ListingType,
+    Saveable,
+    SortType,
+  },
+  fetch_iframely_and_pictshare_data,
+  naive_now,
+  slur_check,
+  slurs_vec_to_str,
+  websocket::{
+    server::{JoinCommunityRoom, JoinPostRoom, SendPost},
+    UserOperation,
+    WebsocketInfo,
+  },
+};
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
+use failure::Error;
+use serde::{Deserialize, Serialize};
+use std::str::FromStr;
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct CreatePost {
   name: String,
   url: Option<String>,
@@ -31,7 +66,7 @@ pub struct GetPostResponse {
   pub online: usize,
 }
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct GetPosts {
   type_: String,
   sort: String,
@@ -41,9 +76,9 @@ pub struct GetPosts {
   auth: Option<String>,
 }
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct GetPostsResponse {
-  posts: Vec<PostView>,
+  pub posts: Vec<PostView>,
 }
 
 #[derive(Serialize, Deserialize)]
@@ -112,7 +147,8 @@ impl Perform for Oper<CreatePost> {
     }
 
     // Check for a site ban
-    if UserView::read(&conn, user_id)?.banned {
+    let user = User_::read(&conn, user_id)?;
+    if user.banned {
       return Err(APIError::err("site_ban").into());
     }
 
@@ -136,6 +172,9 @@ impl Perform for Oper<CreatePost> {
       embed_description: iframely_description,
       embed_html: iframely_html,
       thumbnail_url: pictshare_thumbnail,
+      ap_id: "changeme".into(),
+      local: true,
+      published: None,
     };
 
     let inserted_post = match Post::create(&conn, &post_form) {
@@ -151,6 +190,13 @@ impl Perform for Oper<CreatePost> {
       }
     };
 
+    let updated_post = match Post::update_ap_id(&conn, inserted_post.id) {
+      Ok(post) => post,
+      Err(_e) => return Err(APIError::err("couldnt_create_post").into()),
+    };
+
+    updated_post.send_create(&user, &conn)?;
+
     // They like their own post by default
     let like_form = PostLikeForm {
       post_id: inserted_post.id,
@@ -158,12 +204,13 @@ impl Perform for Oper<CreatePost> {
       score: 1,
     };
 
-    // Only add the like if the score isnt 0
     let _inserted_like = match PostLike::like(&conn, &like_form) {
       Ok(like) => like,
       Err(_e) => return Err(APIError::err("couldnt_like_post").into()),
     };
 
+    updated_post.send_like(&user, &conn)?;
+
     // Refetch the view
     let post_view = match PostView::read(&conn, inserted_post.id, Some(user_id)) {
       Ok(post) => post,
@@ -357,7 +404,8 @@ impl Perform for Oper<CreatePostLike> {
     }
 
     // Check for a site ban
-    if UserView::read(&conn, user_id)?.banned {
+    let user = User_::read(&conn, user_id)?;
+    if user.banned {
       return Err(APIError::err("site_ban").into());
     }
 
@@ -377,6 +425,14 @@ impl Perform for Oper<CreatePostLike> {
         Ok(like) => like,
         Err(_e) => return Err(APIError::err("couldnt_like_post").into()),
       };
+
+      if like_form.score == 1 {
+        post.send_like(&user, &conn)?;
+      } else if like_form.score == -1 {
+        post.send_dislike(&user, &conn)?;
+      }
+    } else {
+      post.send_undo_like(&user, &conn)?;
     }
 
     let post_view = match PostView::read(&conn, data.post_id, Some(user_id)) {
@@ -446,7 +502,8 @@ impl Perform for Oper<EditPost> {
     }
 
     // Check for a site ban
-    if UserView::read(&conn, user_id)?.banned {
+    let user = User_::read(&conn, user_id)?;
+    if user.banned {
       return Err(APIError::err("site_ban").into());
     }
 
@@ -454,6 +511,8 @@ impl Perform for Oper<EditPost> {
     let (iframely_title, iframely_description, iframely_html, pictshare_thumbnail) =
       fetch_iframely_and_pictshare_data(data.url.to_owned());
 
+    let read_post = Post::read(&conn, data.edit_id)?;
+
     let post_form = PostForm {
       name: data.name.to_owned(),
       url: data.url.to_owned(),
@@ -470,9 +529,12 @@ impl Perform for Oper<EditPost> {
       embed_description: iframely_description,
       embed_html: iframely_html,
       thumbnail_url: pictshare_thumbnail,
+      ap_id: read_post.ap_id,
+      local: read_post.local,
+      published: None,
     };
 
-    let _updated_post = match Post::update(&conn, data.edit_id, &post_form) {
+    let updated_post = match Post::update(&conn, data.edit_id, &post_form) {
       Ok(post) => post,
       Err(e) => {
         let err_type = if e.to_string() == "value too long for type character varying(200)" {
@@ -514,6 +576,22 @@ impl Perform for Oper<EditPost> {
       ModStickyPost::create(&conn, &form)?;
     }
 
+    if let Some(deleted) = data.deleted.to_owned() {
+      if deleted {
+        updated_post.send_delete(&user, &conn)?;
+      } else {
+        updated_post.send_undo_delete(&user, &conn)?;
+      }
+    } else if let Some(removed) = data.removed.to_owned() {
+      if removed {
+        updated_post.send_remove(&user, &conn)?;
+      } else {
+        updated_post.send_undo_remove(&user, &conn)?;
+      }
+    } else {
+      updated_post.send_update(&user, &conn)?;
+    }
+
     let post_view = PostView::read(&conn, data.edit_id, Some(user_id))?;
 
     let res = PostResponse { post: post_view };

server/src/api/site.rs

@@ -1,5 +1,36 @@
 use super::user::Register;
-use super::*;
+use crate::{
+  api::{APIError, Oper, Perform},
+  apub::fetcher::search_by_apub_id,
+  db::{
+    category::*,
+    comment_view::*,
+    community_view::*,
+    moderator::*,
+    moderator_views::*,
+    post_view::*,
+    site::*,
+    site_view::*,
+    user::*,
+    user_view::*,
+    Crud,
+    SearchType,
+    SortType,
+  },
+  naive_now,
+  settings::Settings,
+  slur_check,
+  slurs_vec_to_str,
+  websocket::{server::SendAllMessage, UserOperation, WebsocketInfo},
+};
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
+use failure::Error;
+use log::{debug, info};
+use serde::{Deserialize, Serialize};
+use std::str::FromStr;
 
 #[derive(Serialize, Deserialize)]
 pub struct ListCategories {}
@@ -9,7 +40,7 @@ pub struct ListCategoriesResponse {
   categories: Vec<Category>,
 }
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct Search {
   q: String,
   type_: String,
@@ -20,13 +51,13 @@ pub struct Search {
   auth: Option<String>,
 }
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Debug)]
 pub struct SearchResponse {
-  type_: String,
-  comments: Vec<CommentView>,
-  posts: Vec<PostView>,
-  communities: Vec<CommunityView>,
-  users: Vec<UserView>,
+  pub type_: String,
+  pub comments: Vec<CommentView>,
+  pub posts: Vec<PostView>,
+  pub communities: Vec<CommunityView>,
+  pub users: Vec<UserView>,
 }
 
 #[derive(Serialize, Deserialize)]
@@ -342,8 +373,7 @@ impl Perform for Oper<GetSite> {
     let conn = pool.get()?;
 
     // TODO refactor this a little
-    let site = Site::read(&conn, 1);
-    let site_view = if site.is_ok() {
+    let site_view = if let Ok(_site) = Site::read(&conn, 1) {
       Some(SiteView::read(&conn)?)
     } else if let Some(setup) = Settings::get().setup.as_ref() {
       let register = Register {
@@ -360,9 +390,9 @@ impl Perform for Oper<GetSite> {
       let create_site = CreateSite {
         name: setup.site_name.to_owned(),
         description: None,
-        enable_downvotes: false,
-        open_registration: false,
-        enable_nsfw: false,
+        enable_downvotes: true,
+        open_registration: true,
+        enable_nsfw: true,
         auth: login_response.jwt,
       };
       Oper::new(create_site).perform(pool, websocket_info.clone())?;
@@ -373,11 +403,16 @@ impl Perform for Oper<GetSite> {
     };
 
     let mut admins = UserView::admins(&conn)?;
-    if site_view.is_some() {
-      let site_creator_id = site_view.to_owned().unwrap().creator_id;
-      let creator_index = admins.iter().position(|r| r.id == site_creator_id).unwrap();
-      let creator_user = admins.remove(creator_index);
-      admins.insert(0, creator_user);
+
+    // Make sure the site creator is the top admin
+    if let Some(site_view) = site_view.to_owned() {
+      let site_creator_id = site_view.creator_id;
+      // TODO investigate why this is sometimes coming back null
+      // Maybe user_.admin isn't being set to true?
+      if let Some(creator_index) = admins.iter().position(|r| r.id == site_creator_id) {
+        let creator_user = admins.remove(creator_index);
+        admins.insert(0, creator_user);
+      }
     }
 
     let banned = UserView::banned(&conn)?;
@@ -412,6 +447,15 @@ impl Perform for Oper<Search> {
   ) -> Result<SearchResponse, Error> {
     let data: &Search = &self.data;
 
+    dbg!(&data);
+
+    let conn = pool.get()?;
+
+    match search_by_apub_id(&data.q, &conn) {
+      Ok(r) => return Ok(r),
+      Err(e) => debug!("Failed to resolve search query as activitypub ID: {}", e),
+    }
+
     let user_id: Option<i32> = match &data.auth {
       Some(auth) => match Claims::decode(&auth) {
         Ok(claims) => {
@@ -433,8 +477,6 @@ impl Perform for Oper<Search> {
 
     // TODO no clean / non-nsfw searching rn
 
-    let conn = pool.get()?;
-
     match type_ {
       SearchType::Posts => {
         posts = PostQueryBuilder::create(&conn)

server/src/api/user.rs

@@ -1,5 +1,57 @@
-use super::*;
+use crate::{
+  api::{APIError, Oper, Perform},
+  apub::{
+    extensions::signatures::generate_actor_keypair,
+    make_apub_endpoint,
+    ApubObjectType,
+    EndpointType,
+  },
+  db::{
+    comment::*,
+    comment_view::*,
+    community::*,
+    community_view::*,
+    moderator::*,
+    password_reset_request::*,
+    post::*,
+    post_view::*,
+    private_message::*,
+    private_message_view::*,
+    site::*,
+    site_view::*,
+    user::*,
+    user_mention::*,
+    user_mention_view::*,
+    user_view::*,
+    Crud,
+    Followable,
+    Joinable,
+    ListingType,
+    SortType,
+  },
+  generate_random_string,
+  naive_from_unix,
+  naive_now,
+  remove_slurs,
+  send_email,
+  settings::Settings,
+  slur_check,
+  slurs_vec_to_str,
+  websocket::{
+    server::{JoinUserRoom, SendAllMessage, SendUserRoomMessage},
+    UserOperation,
+    WebsocketInfo,
+  },
+};
 use bcrypt::verify;
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
+use failure::Error;
+use log::error;
+use serde::{Deserialize, Serialize};
+use std::str::FromStr;
 
 #[derive(Serialize, Deserialize, Debug)]
 pub struct Login {
@@ -186,7 +238,7 @@ pub struct PrivateMessagesResponse {
 
 #[derive(Serialize, Deserialize, Clone)]
 pub struct PrivateMessageResponse {
-  message: PrivateMessageView,
+  pub message: PrivateMessageView,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -261,10 +313,11 @@ impl Perform for Oper<Register> {
       return Err(APIError::err("admin_already_created").into());
     }
 
+    let user_keypair = generate_actor_keypair()?;
+
     // Register the new user
     let user_form = UserForm {
       name: data.username.to_owned(),
-      fedi_name: Settings::get().hostname,
       email: data.email.to_owned(),
       matrix_user_id: None,
       avatar: None,
@@ -280,6 +333,12 @@ impl Perform for Oper<Register> {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: make_apub_endpoint(EndpointType::User, &data.username).to_string(),
+      bio: None,
+      local: true,
+      private_key: Some(user_keypair.private_key),
+      public_key: Some(user_keypair.public_key),
+      last_refreshed_at: None,
     };
 
     // Create the user
@@ -298,12 +357,15 @@ impl Perform for Oper<Register> {
       }
     };
 
+    let main_community_keypair = generate_actor_keypair()?;
+
     // Create the main community if it doesn't exist
     let main_community: Community = match Community::read(&conn, 2) {
       Ok(c) => c,
       Err(_e) => {
+        let default_community_name = "main";
         let community_form = CommunityForm {
-          name: "main".to_string(),
+          name: default_community_name.to_string(),
           title: "The Default Community".to_string(),
           description: Some("The Default Community".to_string()),
           category_id: 1,
@@ -312,6 +374,12 @@ impl Perform for Oper<Register> {
           removed: None,
           deleted: None,
           updated: None,
+          actor_id: make_apub_endpoint(EndpointType::Community, default_community_name).to_string(),
+          local: true,
+          private_key: Some(main_community_keypair.private_key),
+          public_key: Some(main_community_keypair.public_key),
+          last_refreshed_at: None,
+          published: None,
         };
         Community::create(&conn, &community_form).unwrap()
       }
@@ -406,7 +474,6 @@ impl Perform for Oper<SaveUserSettings> {
 
     let user_form = UserForm {
       name: read_user.name,
-      fedi_name: read_user.fedi_name,
       email,
       matrix_user_id: data.matrix_user_id.to_owned(),
       avatar: data.avatar.to_owned(),
@@ -422,6 +489,12 @@ impl Perform for Oper<SaveUserSettings> {
       lang: data.lang.to_owned(),
       show_avatars: data.show_avatars,
       send_notifications_to_email: data.send_notifications_to_email,
+      actor_id: read_user.actor_id,
+      bio: read_user.bio,
+      local: read_user.local,
+      private_key: read_user.private_key,
+      public_key: read_user.public_key,
+      last_refreshed_at: None,
     };
 
     let updated_user = match User_::update(&conn, user_id, &user_form) {
@@ -483,7 +556,7 @@ impl Perform for Oper<GetUserDetails> {
       None => {
         match User_::read_from_name(
           &conn,
-          data
+          &data
             .username
             .to_owned()
             .unwrap_or_else(|| "admin".to_string()),
@@ -575,30 +648,7 @@ impl Perform for Oper<AddAdmin> {
       return Err(APIError::err("not_an_admin").into());
     }
 
-    let read_user = User_::read(&conn, data.user_id)?;
-
-    // TODO make addadmin easier
-    let user_form = UserForm {
-      name: read_user.name,
-      fedi_name: read_user.fedi_name,
-      email: read_user.email,
-      matrix_user_id: read_user.matrix_user_id,
-      avatar: read_user.avatar,
-      password_encrypted: read_user.password_encrypted,
-      preferred_username: read_user.preferred_username,
-      updated: Some(naive_now()),
-      admin: data.added,
-      banned: read_user.banned,
-      show_nsfw: read_user.show_nsfw,
-      theme: read_user.theme,
-      default_sort_type: read_user.default_sort_type,
-      default_listing_type: read_user.default_listing_type,
-      lang: read_user.lang,
-      show_avatars: read_user.show_avatars,
-      send_notifications_to_email: read_user.send_notifications_to_email,
-    };
-
-    match User_::update(&conn, data.user_id, &user_form) {
+    match User_::add_admin(&conn, user_id, data.added) {
       Ok(user) => user,
       Err(_e) => return Err(APIError::err("couldnt_update_user").into()),
     };
@@ -656,30 +706,7 @@ impl Perform for Oper<BanUser> {
       return Err(APIError::err("not_an_admin").into());
     }
 
-    let read_user = User_::read(&conn, data.user_id)?;
-
-    // TODO make bans and addadmins easier
-    let user_form = UserForm {
-      name: read_user.name,
-      fedi_name: read_user.fedi_name,
-      email: read_user.email,
-      matrix_user_id: read_user.matrix_user_id,
-      avatar: read_user.avatar,
-      password_encrypted: read_user.password_encrypted,
-      preferred_username: read_user.preferred_username,
-      updated: Some(naive_now()),
-      admin: read_user.admin,
-      banned: data.ban,
-      show_nsfw: read_user.show_nsfw,
-      theme: read_user.theme,
-      default_sort_type: read_user.default_sort_type,
-      default_listing_type: read_user.default_listing_type,
-      lang: read_user.lang,
-      show_avatars: read_user.show_avatars,
-      send_notifications_to_email: read_user.send_notifications_to_email,
-    };
-
-    match User_::update(&conn, data.user_id, &user_form) {
+    match User_::ban_user(&conn, user_id, data.ban) {
       Ok(user) => user,
       Err(_e) => return Err(APIError::err("couldnt_update_user").into()),
     };
@@ -850,18 +877,7 @@ impl Perform for Oper<MarkAllAsRead> {
       .list()?;
 
     for reply in &replies {
-      let comment_form = CommentForm {
-        content: reply.to_owned().content,
-        parent_id: reply.to_owned().parent_id,
-        post_id: reply.to_owned().post_id,
-        creator_id: reply.to_owned().creator_id,
-        removed: None,
-        deleted: None,
-        read: Some(true),
-        updated: reply.to_owned().updated,
-      };
-
-      let _updated_comment = match Comment::update(&conn, reply.id, &comment_form) {
+      match Comment::mark_as_read(&conn, reply.id) {
         Ok(comment) => comment,
         Err(_e) => return Err(APIError::err("couldnt_update_comment").into()),
       };
@@ -897,12 +913,15 @@ impl Perform for Oper<MarkAllAsRead> {
 
     for message in &messages {
       let private_message_form = PrivateMessageForm {
-        content: None,
+        content: message.to_owned().content,
         creator_id: message.to_owned().creator_id,
         recipient_id: message.to_owned().recipient_id,
         deleted: None,
         read: Some(true),
         updated: None,
+        ap_id: message.to_owned().ap_id,
+        local: message.local,
+        published: None,
       };
 
       let _updated_message = match PrivateMessage::update(&conn, message.id, &private_message_form)
@@ -950,18 +969,7 @@ impl Perform for Oper<DeleteAccount> {
       .list()?;
 
     for comment in &comments {
-      let comment_form = CommentForm {
-        content: "*Permananently Deleted*".to_string(),
-        parent_id: comment.to_owned().parent_id,
-        post_id: comment.to_owned().post_id,
-        creator_id: comment.to_owned().creator_id,
-        removed: None,
-        deleted: Some(true),
-        read: None,
-        updated: Some(naive_now()),
-      };
-
-      let _updated_comment = match Comment::update(&conn, comment.id, &comment_form) {
+      let _updated_comment = match Comment::permadelete(&conn, comment.id) {
         Ok(comment) => comment,
         Err(_e) => return Err(APIError::err("couldnt_update_comment").into()),
       };
@@ -975,25 +983,7 @@ impl Perform for Oper<DeleteAccount> {
       .list()?;
 
     for post in &posts {
-      let post_form = PostForm {
-        name: "*Permananently Deleted*".to_string(),
-        url: Some("https://deleted.com".to_string()),
-        body: Some("*Permananently Deleted*".to_string()),
-        creator_id: post.to_owned().creator_id,
-        community_id: post.to_owned().community_id,
-        removed: None,
-        deleted: Some(true),
-        nsfw: post.to_owned().nsfw,
-        locked: None,
-        stickied: None,
-        updated: Some(naive_now()),
-        embed_title: None,
-        embed_description: None,
-        embed_html: None,
-        thumbnail_url: None,
-      };
-
-      let _updated_post = match Post::update(&conn, post.id, &post_form) {
+      let _updated_post = match Post::permadelete(&conn, post.id) {
         Ok(post) => post,
         Err(_e) => return Err(APIError::err("couldnt_update_post").into()),
       };
@@ -1099,19 +1089,23 @@ impl Perform for Oper<CreatePrivateMessage> {
     let conn = pool.get()?;
 
     // Check for a site ban
-    if UserView::read(&conn, user_id)?.banned {
+    let user = User_::read(&conn, user_id)?;
+    if user.banned {
       return Err(APIError::err("site_ban").into());
     }
 
     let content_slurs_removed = remove_slurs(&data.content.to_owned());
 
     let private_message_form = PrivateMessageForm {
-      content: Some(content_slurs_removed.to_owned()),
+      content: content_slurs_removed.to_owned(),
       creator_id: user_id,
       recipient_id: data.recipient_id,
       deleted: None,
       read: None,
       updated: None,
+      ap_id: "changeme".into(),
+      local: true,
+      published: None,
     };
 
     let inserted_private_message = match PrivateMessage::create(&conn, &private_message_form) {
@@ -1121,6 +1115,14 @@ impl Perform for Oper<CreatePrivateMessage> {
       }
     };
 
+    let updated_private_message =
+      match PrivateMessage::update_ap_id(&conn, inserted_private_message.id) {
+        Ok(private_message) => private_message,
+        Err(_e) => return Err(APIError::err("couldnt_create_private_message").into()),
+      };
+
+    updated_private_message.send_create(&user, &conn)?;
+
     // Send notifications to the recipient
     let recipient_user = User_::read(&conn, data.recipient_id)?;
     if recipient_user.send_notifications_to_email {
@@ -1164,7 +1166,7 @@ impl Perform for Oper<EditPrivateMessage> {
   fn perform(
     &self,
     pool: Pool<ConnectionManager<PgConnection>>,
-    _websocket_info: Option<WebsocketInfo>,
+    websocket_info: Option<WebsocketInfo>,
   ) -> Result<PrivateMessageResponse, Error> {
     let data: &EditPrivateMessage = &self.data;
 
@@ -1180,7 +1182,8 @@ impl Perform for Oper<EditPrivateMessage> {
     let orig_private_message = PrivateMessage::read(&conn, data.edit_id)?;
 
     // Check for a site ban
-    if UserView::read(&conn, user_id)?.banned {
+    let user = User_::read(&conn, user_id)?;
+    if user.banned {
       return Err(APIError::err("site_ban").into());
     }
 
@@ -1192,8 +1195,8 @@ impl Perform for Oper<EditPrivateMessage> {
     }
 
     let content_slurs_removed = match &data.content {
-      Some(content) => Some(remove_slurs(content)),
-      None => None,
+      Some(content) => remove_slurs(content),
+      None => orig_private_message.content,
     };
 
     let private_message_form = PrivateMessageForm {
@@ -1207,17 +1210,41 @@ impl Perform for Oper<EditPrivateMessage> {
       } else {
         Some(naive_now())
       },
+      ap_id: orig_private_message.ap_id,
+      local: orig_private_message.local,
+      published: None,
     };
 
-    let _updated_private_message =
+    let updated_private_message =
       match PrivateMessage::update(&conn, data.edit_id, &private_message_form) {
         Ok(private_message) => private_message,
         Err(_e) => return Err(APIError::err("couldnt_update_private_message").into()),
       };
 
+    if let Some(deleted) = data.deleted.to_owned() {
+      if deleted {
+        updated_private_message.send_delete(&user, &conn)?;
+      } else {
+        updated_private_message.send_undo_delete(&user, &conn)?;
+      }
+    } else {
+      updated_private_message.send_update(&user, &conn)?;
+    }
+
     let message = PrivateMessageView::read(&conn, data.edit_id)?;
 
-    Ok(PrivateMessageResponse { message })
+    let res = PrivateMessageResponse { message };
+
+    if let Some(ws) = websocket_info {
+      ws.chatserver.do_send(SendUserRoomMessage {
+        op: UserOperation::EditPrivateMessage,
+        response: res.clone(),
+        recipient_id: orig_private_message.recipient_id,
+        my_id: ws.id,
+      });
+    }
+
+    Ok(res)
   }
 }
 

server/src/apub/activities.rs

@@ -0,0 +1,73 @@
+use crate::{
+  apub::{extensions::signatures::sign, is_apub_id_valid, ActorType},
+  db::{activity::insert_activity, community::Community, user::User_},
+};
+use activitystreams::{context, object::properties::ObjectProperties, public, Activity, Base};
+use diesel::PgConnection;
+use failure::{Error, _core::fmt::Debug};
+use isahc::prelude::*;
+use log::debug;
+use serde::Serialize;
+use url::Url;
+
+pub fn populate_object_props(
+  props: &mut ObjectProperties,
+  addressed_ccs: Vec<String>,
+  object_id: &str,
+) -> Result<(), Error> {
+  props
+    .set_context_xsd_any_uri(context())?
+    // TODO: the activity needs a seperate id from the object
+    .set_id(object_id)?
+    // TODO: should to/cc go on the Create, or on the Post? or on both?
+    // TODO: handle privacy on the receiving side (at least ignore anything thats not public)
+    .set_to_xsd_any_uri(public())?
+    .set_many_cc_xsd_any_uris(addressed_ccs)?;
+  Ok(())
+}
+
+pub fn send_activity_to_community<A>(
+  creator: &User_,
+  conn: &PgConnection,
+  community: &Community,
+  to: Vec<String>,
+  activity: A,
+) -> Result<(), Error>
+where
+  A: Activity + Base + Serialize + Debug,
+{
+  insert_activity(&conn, creator.id, &activity, true)?;
+
+  // if this is a local community, we need to do an announce from the community instead
+  if community.local {
+    Community::do_announce(activity, &community, creator, conn)?;
+  } else {
+    send_activity(&activity, creator, to)?;
+  }
+  Ok(())
+}
+
+/// Send an activity to a list of recipients, using the correct headers etc.
+pub fn send_activity<A>(activity: &A, actor: &dyn ActorType, to: Vec<String>) -> Result<(), Error>
+where
+  A: Serialize + Debug,
+{
+  let json = serde_json::to_string(&activity)?;
+  debug!("Sending activitypub activity {} to {:?}", json, to);
+  for t in to {
+    let to_url = Url::parse(&t)?;
+    if !is_apub_id_valid(&to_url) {
+      debug!("Not sending activity to {} (invalid or blacklisted)", t);
+      continue;
+    }
+    let request = Request::post(t).header("Host", to_url.domain().unwrap());
+    let signature = sign(&request, actor)?;
+    let res = request
+      .header("Signature", signature)
+      .header("Content-Type", "application/json")
+      .body(json.to_owned())?
+      .send()?;
+    debug!("Result for activity send: {:?}", res);
+  }
+  Ok(())
+}

server/src/apub/comment.rs

@@ -0,0 +1,510 @@
+use crate::{
+  apub::{
+    activities::{populate_object_props, send_activity_to_community},
+    create_apub_response,
+    create_apub_tombstone_response,
+    create_tombstone,
+    fetch_webfinger_url,
+    fetcher::{
+      get_or_fetch_and_insert_remote_comment,
+      get_or_fetch_and_insert_remote_post,
+      get_or_fetch_and_upsert_remote_user,
+    },
+    ActorType,
+    ApubLikeableType,
+    ApubObjectType,
+    FromApub,
+    ToApub,
+  },
+  convert_datetime,
+  db::{
+    comment::{Comment, CommentForm},
+    community::Community,
+    post::Post,
+    user::User_,
+    Crud,
+  },
+  routes::DbPoolParam,
+  scrape_text_for_mentions,
+  MentionData,
+};
+use activitystreams::{
+  activity::{Create, Delete, Dislike, Like, Remove, Undo, Update},
+  context,
+  link::Mention,
+  object::{kind::NoteType, properties::ObjectProperties, Note},
+};
+use activitystreams_new::object::Tombstone;
+use actix_web::{body::Body, web::Path, HttpResponse, Result};
+use diesel::PgConnection;
+use failure::Error;
+use itertools::Itertools;
+use log::debug;
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct CommentQuery {
+  comment_id: String,
+}
+
+/// Return the post json over HTTP.
+pub async fn get_apub_comment(
+  info: Path<CommentQuery>,
+  db: DbPoolParam,
+) -> Result<HttpResponse<Body>, Error> {
+  let id = info.comment_id.parse::<i32>()?;
+  let comment = Comment::read(&&db.get()?, id)?;
+  if !comment.deleted {
+    Ok(create_apub_response(&comment.to_apub(&db.get().unwrap())?))
+  } else {
+    Ok(create_apub_tombstone_response(&comment.to_tombstone()?))
+  }
+}
+
+impl ToApub for Comment {
+  type Response = Note;
+
+  fn to_apub(&self, conn: &PgConnection) -> Result<Note, Error> {
+    let mut comment = Note::default();
+    let oprops: &mut ObjectProperties = comment.as_mut();
+    let creator = User_::read(&conn, self.creator_id)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(&conn, post.community_id)?;
+
+    // Add a vector containing some important info to the "in_reply_to" field
+    // [post_ap_id, Option(parent_comment_ap_id)]
+    let mut in_reply_to_vec = vec![post.ap_id];
+
+    if let Some(parent_id) = self.parent_id {
+      let parent_comment = Comment::read(&conn, parent_id)?;
+      in_reply_to_vec.push(parent_comment.ap_id);
+    }
+
+    oprops
+      // Not needed when the Post is embedded in a collection (like for community outbox)
+      .set_context_xsd_any_uri(context())?
+      .set_id(self.ap_id.to_owned())?
+      .set_published(convert_datetime(self.published))?
+      .set_to_xsd_any_uri(community.actor_id)?
+      .set_many_in_reply_to_xsd_any_uris(in_reply_to_vec)?
+      .set_content_xsd_string(self.content.to_owned())?
+      .set_attributed_to_xsd_any_uri(creator.actor_id)?;
+
+    if let Some(u) = self.updated {
+      oprops.set_updated(convert_datetime(u))?;
+    }
+
+    Ok(comment)
+  }
+
+  fn to_tombstone(&self) -> Result<Tombstone, Error> {
+    create_tombstone(
+      self.deleted,
+      &self.ap_id,
+      self.updated,
+      NoteType.to_string(),
+    )
+  }
+}
+
+impl FromApub for CommentForm {
+  type ApubType = Note;
+
+  /// Parse an ActivityPub note received from another instance into a Lemmy comment
+  fn from_apub(note: &Note, conn: &PgConnection) -> Result<CommentForm, Error> {
+    let oprops = &note.object_props;
+    let creator_actor_id = &oprops.get_attributed_to_xsd_any_uri().unwrap().to_string();
+    let creator = get_or_fetch_and_upsert_remote_user(&creator_actor_id, &conn)?;
+
+    let mut in_reply_tos = oprops.get_many_in_reply_to_xsd_any_uris().unwrap();
+    let post_ap_id = in_reply_tos.next().unwrap().to_string();
+
+    // This post, or the parent comment might not yet exist on this server yet, fetch them.
+    let post = get_or_fetch_and_insert_remote_post(&post_ap_id, &conn)?;
+
+    // The 2nd item, if it exists, is the parent comment apub_id
+    // For deeply nested comments, FromApub automatically gets called recursively
+    let parent_id: Option<i32> = match in_reply_tos.next() {
+      Some(parent_comment_uri) => {
+        let parent_comment_ap_id = &parent_comment_uri.to_string();
+        let parent_comment = get_or_fetch_and_insert_remote_comment(&parent_comment_ap_id, &conn)?;
+
+        Some(parent_comment.id)
+      }
+      None => None,
+    };
+
+    Ok(CommentForm {
+      creator_id: creator.id,
+      post_id: post.id,
+      parent_id,
+      content: oprops
+        .get_content_xsd_string()
+        .map(|c| c.to_string())
+        .unwrap(),
+      removed: None,
+      read: None,
+      published: oprops
+        .get_published()
+        .map(|u| u.as_ref().to_owned().naive_local()),
+      updated: oprops
+        .get_updated()
+        .map(|u| u.as_ref().to_owned().naive_local()),
+      deleted: None,
+      ap_id: oprops.get_id().unwrap().to_string(),
+      local: false,
+    })
+  }
+}
+
+impl ApubObjectType for Comment {
+  /// Send out information about a newly created comment, to the followers of the community.
+  fn send_create(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(conn)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(conn, post.community_id)?;
+    let id = format!("{}/create/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let maa: MentionsAndAddresses =
+      collect_non_local_mentions_and_addresses(&conn, &self.content, &community)?;
+
+    let mut create = Create::new();
+    populate_object_props(&mut create.object_props, maa.addressed_ccs, &id)?;
+
+    // Set the mention tags
+    create.object_props.set_many_tag_base_boxes(maa.tags)?;
+
+    create
+      .create_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    send_activity_to_community(&creator, &conn, &community, maa.inboxes, create)?;
+    Ok(())
+  }
+
+  /// Send out information about an edited post, to the followers of the community.
+  fn send_update(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(&conn)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(&conn, post.community_id)?;
+    let id = format!("{}/update/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let maa: MentionsAndAddresses =
+      collect_non_local_mentions_and_addresses(&conn, &self.content, &community)?;
+
+    let mut update = Update::new();
+    populate_object_props(&mut update.object_props, maa.addressed_ccs, &id)?;
+
+    // Set the mention tags
+    update.object_props.set_many_tag_base_boxes(maa.tags)?;
+
+    update
+      .update_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    send_activity_to_community(&creator, &conn, &community, maa.inboxes, update)?;
+    Ok(())
+  }
+
+  fn send_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(&conn)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(&conn, post.community_id)?;
+    let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut delete = Delete::default();
+
+    populate_object_props(
+      &mut delete.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+
+    delete
+      .delete_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    send_activity_to_community(
+      &creator,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      delete,
+    )?;
+    Ok(())
+  }
+
+  fn send_undo_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(&conn)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(&conn, post.community_id)?;
+
+    // Generate a fake delete activity, with the correct object
+    let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut delete = Delete::default();
+
+    populate_object_props(
+      &mut delete.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+
+    delete
+      .delete_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    // TODO
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/delete/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::default();
+
+    populate_object_props(
+      &mut undo.object_props,
+      vec![community.get_followers_url()],
+      &undo_id,
+    )?;
+
+    undo
+      .undo_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(delete)?;
+
+    send_activity_to_community(
+      &creator,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      undo,
+    )?;
+    Ok(())
+  }
+
+  fn send_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(&conn)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(&conn, post.community_id)?;
+    let id = format!("{}/remove/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut remove = Remove::default();
+
+    populate_object_props(
+      &mut remove.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+
+    remove
+      .remove_props
+      .set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    send_activity_to_community(
+      &mod_,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      remove,
+    )?;
+    Ok(())
+  }
+
+  fn send_undo_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(&conn)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(&conn, post.community_id)?;
+
+    // Generate a fake delete activity, with the correct object
+    let id = format!("{}/remove/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut remove = Remove::default();
+
+    populate_object_props(
+      &mut remove.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+
+    remove
+      .remove_props
+      .set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/remove/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::default();
+
+    populate_object_props(
+      &mut undo.object_props,
+      vec![community.get_followers_url()],
+      &undo_id,
+    )?;
+
+    undo
+      .undo_props
+      .set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
+      .set_object_base_box(remove)?;
+
+    send_activity_to_community(
+      &mod_,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      undo,
+    )?;
+    Ok(())
+  }
+}
+
+impl ApubLikeableType for Comment {
+  fn send_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(&conn)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(&conn, post.community_id)?;
+    let id = format!("{}/like/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let mut like = Like::new();
+    populate_object_props(
+      &mut like.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+    like
+      .like_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    send_activity_to_community(
+      &creator,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      like,
+    )?;
+    Ok(())
+  }
+
+  fn send_dislike(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(&conn)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(&conn, post.community_id)?;
+    let id = format!("{}/dislike/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let mut dislike = Dislike::new();
+    populate_object_props(
+      &mut dislike.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+    dislike
+      .dislike_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    send_activity_to_community(
+      &creator,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      dislike,
+    )?;
+    Ok(())
+  }
+
+  fn send_undo_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(&conn)?;
+    let post = Post::read(&conn, self.post_id)?;
+    let community = Community::read(&conn, post.community_id)?;
+    let id = format!("{}/dislike/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let mut like = Like::new();
+    populate_object_props(
+      &mut like.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+    like
+      .like_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    // TODO
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/like/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::default();
+
+    populate_object_props(
+      &mut undo.object_props,
+      vec![community.get_followers_url()],
+      &undo_id,
+    )?;
+
+    undo
+      .undo_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(like)?;
+
+    send_activity_to_community(
+      &creator,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      undo,
+    )?;
+    Ok(())
+  }
+}
+
+struct MentionsAndAddresses {
+  addressed_ccs: Vec<String>,
+  inboxes: Vec<String>,
+  tags: Vec<Mention>,
+}
+
+/// This takes a comment, and builds a list of to_addresses, inboxes,
+/// and mention tags, so they know where to be sent to.
+/// Addresses are the users / addresses that go in the cc field.
+fn collect_non_local_mentions_and_addresses(
+  conn: &PgConnection,
+  content: &str,
+  community: &Community,
+) -> Result<MentionsAndAddresses, Error> {
+  let mut addressed_ccs = vec![community.get_followers_url()];
+
+  // Add the mention tag
+  let mut tags = Vec::new();
+
+  // Get the inboxes for any mentions
+  let mentions = scrape_text_for_mentions(&content)
+    .into_iter()
+    // Filter only the non-local ones
+    .filter(|m| !m.is_local())
+    .collect::<Vec<MentionData>>();
+  let mut mention_inboxes = Vec::new();
+  for mention in &mentions {
+    // TODO should it be fetching it every time?
+    if let Ok(actor_id) = fetch_webfinger_url(mention) {
+      debug!("mention actor_id: {}", actor_id);
+      addressed_ccs.push(actor_id.to_owned());
+      let mention_user = get_or_fetch_and_upsert_remote_user(&actor_id, &conn)?;
+      let shared_inbox = mention_user.get_shared_inbox_url();
+      mention_inboxes.push(shared_inbox);
+      let mut mention_tag = Mention::new();
+      mention_tag
+        .link_props
+        .set_href(actor_id)?
+        .set_name_xsd_string(mention.full_name())?;
+      tags.push(mention_tag);
+    }
+  }
+
+  let mut inboxes = vec![community.get_shared_inbox_url()];
+  inboxes.extend(mention_inboxes);
+  inboxes = inboxes.into_iter().unique().collect();
+
+  Ok(MentionsAndAddresses {
+    addressed_ccs,
+    inboxes,
+    tags,
+  })
+}

server/src/apub/community.rs

@@ -1,109 +1,414 @@
-use crate::apub::make_apub_endpoint;
-use crate::db::community::Community;
-use crate::db::community_view::CommunityFollowerView;
-use crate::db::establish_unpooled_connection;
-use crate::to_datetime_utc;
-use activitypub::{actor::Group, collection::UnorderedCollection, context};
-use actix_web::body::Body;
-use actix_web::web::Path;
-use actix_web::HttpResponse;
-use serde::Deserialize;
-
-impl Community {
-  pub fn as_group(&self) -> Group {
-    let base_url = make_apub_endpoint("c", &self.name);
-
-    let mut group = Group::default();
-
-    group.object_props.set_context_object(context()).ok();
-    group.object_props.set_id_string(base_url.to_string()).ok();
-    group
-      .object_props
-      .set_name_string(self.name.to_owned())
-      .ok();
-    group
-      .object_props
-      .set_published_utctime(to_datetime_utc(self.published))
-      .ok();
-    if let Some(updated) = self.updated {
-      group
-        .object_props
-        .set_updated_utctime(to_datetime_utc(updated))
-        .ok();
-    }
-
-    if let Some(description) = &self.description {
-      group
-        .object_props
-        .set_summary_string(description.to_string())
-        .ok();
-    }
-
-    group
-      .ap_actor_props
-      .set_inbox_string(format!("{}/inbox", &base_url))
-      .ok();
-    group
-      .ap_actor_props
-      .set_outbox_string(format!("{}/outbox", &base_url))
-      .ok();
-    group
-      .ap_actor_props
-      .set_followers_string(format!("{}/followers", &base_url))
-      .ok();
-
-    group
-  }
-
-  pub fn followers_as_collection(&self) -> UnorderedCollection {
-    let base_url = make_apub_endpoint("c", &self.name);
-
-    let mut collection = UnorderedCollection::default();
-    collection.object_props.set_context_object(context()).ok();
-    collection.object_props.set_id_string(base_url).ok();
-
-    let connection = establish_unpooled_connection();
-    //As we are an object, we validated that the community id was valid
-    let community_followers = CommunityFollowerView::for_community(&connection, self.id).unwrap();
-
-    let ap_followers = community_followers
-      .iter()
-      .map(|follower| make_apub_endpoint("u", &follower.user_name))
-      .collect();
-
-    collection
-      .collection_props
-      .set_items_string_vec(ap_followers)
-      .unwrap();
-    collection
-  }
-}
+use crate::{
+  apub::{
+    activities::{populate_object_props, send_activity},
+    create_apub_response,
+    create_apub_tombstone_response,
+    create_tombstone,
+    extensions::{group_extensions::GroupExtension, signatures::PublicKey},
+    fetcher::get_or_fetch_and_upsert_remote_user,
+    get_shared_inbox,
+    ActorType,
+    FromApub,
+    GroupExt,
+    ToApub,
+  },
+  convert_datetime,
+  db::{
+    activity::insert_activity,
+    community::{Community, CommunityForm},
+    community_view::{CommunityFollowerView, CommunityModeratorView},
+    user::User_,
+  },
+  naive_now,
+  routes::DbPoolParam,
+};
+use activitystreams::{
+  activity::{Accept, Announce, Delete, Remove, Undo},
+  actor::{kind::GroupType, properties::ApActorProperties, Group},
+  collection::UnorderedCollection,
+  context,
+  endpoint::EndpointProperties,
+  object::properties::ObjectProperties,
+  Activity,
+  Base,
+  BaseBox,
+};
+use activitystreams_ext::Ext3;
+use activitystreams_new::{activity::Follow, object::Tombstone};
+use actix_web::{body::Body, web::Path, HttpResponse, Result};
+use diesel::PgConnection;
+use failure::{Error, _core::fmt::Debug};
+use itertools::Itertools;
+use serde::{Deserialize, Serialize};
 
 #[derive(Deserialize)]
 pub struct CommunityQuery {
   community_name: String,
 }
 
-pub async fn get_apub_community(info: Path<CommunityQuery>) -> HttpResponse<Body> {
-  let connection = establish_unpooled_connection();
+impl ToApub for Community {
+  type Response = GroupExt;
 
-  if let Ok(community) = Community::read_from_name(&connection, info.community_name.to_owned()) {
-    HttpResponse::Ok()
-      .content_type("application/activity+json")
-      .body(serde_json::to_string(&community.as_group()).unwrap())
-  } else {
-    HttpResponse::NotFound().finish()
+  // Turn a Lemmy Community into an ActivityPub group that can be sent out over the network.
+  fn to_apub(&self, conn: &PgConnection) -> Result<GroupExt, Error> {
+    let mut group = Group::default();
+    let oprops: &mut ObjectProperties = group.as_mut();
+
+    // The attributed to, is an ordered vector with the creator actor_ids first,
+    // then the rest of the moderators
+    // TODO Technically the instance admins can mod the community, but lets
+    // ignore that for now
+    let moderators = CommunityModeratorView::for_community(&conn, self.id)?
+      .into_iter()
+      .map(|m| m.user_actor_id)
+      .collect();
+
+    oprops
+      .set_context_xsd_any_uri(context())?
+      .set_id(self.actor_id.to_owned())?
+      .set_name_xsd_string(self.name.to_owned())?
+      .set_published(convert_datetime(self.published))?
+      .set_many_attributed_to_xsd_any_uris(moderators)?;
+
+    if let Some(u) = self.updated.to_owned() {
+      oprops.set_updated(convert_datetime(u))?;
+    }
+    if let Some(d) = self.description.to_owned() {
+      // TODO: this should be html, also add source field with raw markdown
+      //       -> same for post.content and others
+      oprops.set_summary_xsd_string(d)?;
+    }
+
+    let mut endpoint_props = EndpointProperties::default();
+
+    endpoint_props.set_shared_inbox(self.get_shared_inbox_url())?;
+
+    let mut actor_props = ApActorProperties::default();
+
+    actor_props
+      .set_preferred_username(self.title.to_owned())?
+      .set_inbox(self.get_inbox_url())?
+      .set_outbox(self.get_outbox_url())?
+      .set_endpoints(endpoint_props)?
+      .set_followers(self.get_followers_url())?;
+
+    let group_extension = GroupExtension::new(conn, self.category_id, self.nsfw)?;
+
+    Ok(Ext3::new(
+      group,
+      group_extension,
+      actor_props,
+      self.get_public_key_ext(),
+    ))
+  }
+
+  fn to_tombstone(&self) -> Result<Tombstone, Error> {
+    create_tombstone(
+      self.deleted,
+      &self.actor_id,
+      self.updated,
+      GroupType.to_string(),
+    )
   }
 }
 
-pub async fn get_apub_community_followers(info: Path<CommunityQuery>) -> HttpResponse<Body> {
-  let connection = establish_unpooled_connection();
+impl ActorType for Community {
+  fn actor_id(&self) -> String {
+    self.actor_id.to_owned()
+  }
 
-  if let Ok(community) = Community::read_from_name(&connection, info.community_name.to_owned()) {
-    HttpResponse::Ok()
-      .content_type("application/activity+json")
-      .body(serde_json::to_string(&community.followers_as_collection()).unwrap())
-  } else {
-    HttpResponse::NotFound().finish()
+  fn public_key(&self) -> String {
+    self.public_key.to_owned().unwrap()
+  }
+  fn private_key(&self) -> String {
+    self.private_key.to_owned().unwrap()
+  }
+
+  /// As a local community, accept the follow request from a remote user.
+  fn send_accept_follow(&self, follow: &Follow, conn: &PgConnection) -> Result<(), Error> {
+    let actor_uri = follow.actor.as_single_xsd_any_uri().unwrap().to_string();
+    let id = format!("{}/accept/{}", self.actor_id, uuid::Uuid::new_v4());
+
+    let mut accept = Accept::new();
+    accept
+      .object_props
+      .set_context_xsd_any_uri(context())?
+      .set_id(id)?;
+    accept
+      .accept_props
+      .set_actor_xsd_any_uri(self.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(follow.clone())?)?;
+    let to = format!("{}/inbox", actor_uri);
+
+    insert_activity(&conn, self.creator_id, &accept, true)?;
+
+    send_activity(&accept, self, vec![to])?;
+    Ok(())
+  }
+
+  fn send_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let group = self.to_apub(conn)?;
+    let id = format!("{}/delete/{}", self.actor_id, uuid::Uuid::new_v4());
+
+    let mut delete = Delete::default();
+    populate_object_props(
+      &mut delete.object_props,
+      vec![self.get_followers_url()],
+      &id,
+    )?;
+
+    delete
+      .delete_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(group)?)?;
+
+    insert_activity(&conn, self.creator_id, &delete, true)?;
+
+    // Note: For an accept, since it was automatic, no one pushed a button,
+    // the community was the actor.
+    // But for delete, the creator is the actor, and does the signing
+    send_activity(&delete, creator, self.get_follower_inboxes(&conn)?)?;
+    Ok(())
+  }
+
+  fn send_undo_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let group = self.to_apub(conn)?;
+    let id = format!("{}/delete/{}", self.actor_id, uuid::Uuid::new_v4());
+
+    let mut delete = Delete::default();
+    populate_object_props(
+      &mut delete.object_props,
+      vec![self.get_followers_url()],
+      &id,
+    )?;
+
+    delete
+      .delete_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(group)?)?;
+
+    // TODO
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/delete/{}", self.actor_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::default();
+
+    populate_object_props(
+      &mut undo.object_props,
+      vec![self.get_followers_url()],
+      &undo_id,
+    )?;
+
+    undo
+      .undo_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(delete)?;
+
+    insert_activity(&conn, self.creator_id, &undo, true)?;
+
+    // Note: For an accept, since it was automatic, no one pushed a button,
+    // the community was the actor.
+    // But for delete, the creator is the actor, and does the signing
+    send_activity(&undo, creator, self.get_follower_inboxes(&conn)?)?;
+    Ok(())
+  }
+
+  fn send_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let group = self.to_apub(conn)?;
+    let id = format!("{}/remove/{}", self.actor_id, uuid::Uuid::new_v4());
+
+    let mut remove = Remove::default();
+    populate_object_props(
+      &mut remove.object_props,
+      vec![self.get_followers_url()],
+      &id,
+    )?;
+
+    remove
+      .remove_props
+      .set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(group)?)?;
+
+    insert_activity(&conn, mod_.id, &remove, true)?;
+
+    // Note: For an accept, since it was automatic, no one pushed a button,
+    // the community was the actor.
+    // But for delete, the creator is the actor, and does the signing
+    send_activity(&remove, mod_, self.get_follower_inboxes(&conn)?)?;
+    Ok(())
+  }
+
+  fn send_undo_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let group = self.to_apub(conn)?;
+    let id = format!("{}/remove/{}", self.actor_id, uuid::Uuid::new_v4());
+
+    let mut remove = Remove::default();
+    populate_object_props(
+      &mut remove.object_props,
+      vec![self.get_followers_url()],
+      &id,
+    )?;
+
+    remove
+      .remove_props
+      .set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(group)?)?;
+
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/remove/{}", self.actor_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::default();
+
+    populate_object_props(
+      &mut undo.object_props,
+      vec![self.get_followers_url()],
+      &undo_id,
+    )?;
+
+    undo
+      .undo_props
+      .set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
+      .set_object_base_box(remove)?;
+
+    insert_activity(&conn, mod_.id, &undo, true)?;
+
+    // Note: For an accept, since it was automatic, no one pushed a button,
+    // the community was the actor.
+    // But for remove , the creator is the actor, and does the signing
+    send_activity(&undo, mod_, self.get_follower_inboxes(&conn)?)?;
+    Ok(())
+  }
+
+  /// For a given community, returns the inboxes of all followers.
+  fn get_follower_inboxes(&self, conn: &PgConnection) -> Result<Vec<String>, Error> {
+    Ok(
+      CommunityFollowerView::for_community(conn, self.id)?
+        .into_iter()
+        .map(|c| get_shared_inbox(&c.user_actor_id))
+        .filter(|s| !s.is_empty())
+        .unique()
+        .collect(),
+    )
+  }
+
+  fn send_follow(&self, _follow_actor_id: &str, _conn: &PgConnection) -> Result<(), Error> {
+    unimplemented!()
+  }
+
+  fn send_unfollow(&self, _follow_actor_id: &str, _conn: &PgConnection) -> Result<(), Error> {
+    unimplemented!()
+  }
+}
+
+impl FromApub for CommunityForm {
+  type ApubType = GroupExt;
+
+  /// Parse an ActivityPub group received from another instance into a Lemmy community.
+  fn from_apub(group: &GroupExt, conn: &PgConnection) -> Result<Self, Error> {
+    let group_extensions: &GroupExtension = &group.ext_one;
+    let oprops = &group.inner.object_props;
+    let aprops = &group.ext_two;
+    let public_key: &PublicKey = &group.ext_three.public_key;
+
+    let mut creator_and_moderator_uris = oprops.get_many_attributed_to_xsd_any_uris().unwrap();
+    let creator = creator_and_moderator_uris
+      .next()
+      .map(|c| get_or_fetch_and_upsert_remote_user(&c.to_string(), &conn).unwrap())
+      .unwrap();
+
+    Ok(CommunityForm {
+      name: oprops.get_name_xsd_string().unwrap().to_string(),
+      title: aprops.get_preferred_username().unwrap().to_string(),
+      // TODO: should be parsed as html and tags like <script> removed (or use markdown source)
+      //       -> same for post.content etc
+      description: oprops.get_content_xsd_string().map(|s| s.to_string()),
+      category_id: group_extensions.category.identifier.parse::<i32>()?,
+      creator_id: creator.id,
+      removed: None,
+      published: oprops
+        .get_published()
+        .map(|u| u.as_ref().to_owned().naive_local()),
+      updated: oprops
+        .get_updated()
+        .map(|u| u.as_ref().to_owned().naive_local()),
+      deleted: None,
+      nsfw: group_extensions.sensitive,
+      actor_id: oprops.get_id().unwrap().to_string(),
+      local: false,
+      private_key: None,
+      public_key: Some(public_key.to_owned().public_key_pem),
+      last_refreshed_at: Some(naive_now()),
+    })
+  }
+}
+
+/// Return the community json over HTTP.
+pub async fn get_apub_community_http(
+  info: Path<CommunityQuery>,
+  db: DbPoolParam,
+) -> Result<HttpResponse<Body>, Error> {
+  let community = Community::read_from_name(&&db.get()?, &info.community_name)?;
+  if !community.deleted {
+    Ok(create_apub_response(
+      &community.to_apub(&db.get().unwrap())?,
+    ))
+  } else {
+    Ok(create_apub_tombstone_response(&community.to_tombstone()?))
+  }
+}
+
+/// Returns an empty followers collection, only populating the size (for privacy).
+pub async fn get_apub_community_followers(
+  info: Path<CommunityQuery>,
+  db: DbPoolParam,
+) -> Result<HttpResponse<Body>, Error> {
+  let community = Community::read_from_name(&&db.get()?, &info.community_name)?;
+
+  let conn = db.get()?;
+
+  //As we are an object, we validated that the community id was valid
+  let community_followers = CommunityFollowerView::for_community(&conn, community.id).unwrap();
+
+  let mut collection = UnorderedCollection::default();
+  let oprops: &mut ObjectProperties = collection.as_mut();
+  oprops
+    .set_context_xsd_any_uri(context())?
+    .set_id(community.actor_id)?;
+  collection
+    .collection_props
+    .set_total_items(community_followers.len() as u64)?;
+  Ok(create_apub_response(&collection))
+}
+
+impl Community {
+  pub fn do_announce<A>(
+    activity: A,
+    community: &Community,
+    sender: &dyn ActorType,
+    conn: &PgConnection,
+  ) -> Result<HttpResponse, Error>
+  where
+    A: Activity + Base + Serialize + Debug,
+  {
+    let mut announce = Announce::default();
+    populate_object_props(
+      &mut announce.object_props,
+      vec![community.get_followers_url()],
+      &format!("{}/announce/{}", community.actor_id, uuid::Uuid::new_v4()),
+    )?;
+    announce
+      .announce_props
+      .set_actor_xsd_any_uri(community.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(activity)?)?;
+
+    insert_activity(&conn, community.creator_id, &announce, true)?;
+
+    // dont send to the instance where the activity originally came from, because that would result
+    // in a database error (same data inserted twice)
+    let mut to = community.get_follower_inboxes(&conn)?;
+    // this seems to be the "easiest" stable alternative for remove_item()
+    to.retain(|x| *x != sender.get_shared_inbox_url());
+
+    send_activity(&announce, community, to)?;
+
+    Ok(HttpResponse::Ok().finish())
   }
 }

server/src/apub/community_inbox.rs

@@ -0,0 +1,123 @@
+use crate::{
+  apub::{
+    extensions::signatures::verify,
+    fetcher::{get_or_fetch_and_upsert_remote_community, get_or_fetch_and_upsert_remote_user},
+    ActorType,
+  },
+  db::{
+    activity::insert_activity,
+    community::{Community, CommunityFollower, CommunityFollowerForm},
+    user::User_,
+    Followable,
+  },
+  routes::{ChatServerParam, DbPoolParam},
+};
+use activitystreams::activity::Undo;
+use activitystreams_new::activity::Follow;
+use actix_web::{web, HttpRequest, HttpResponse, Result};
+use diesel::PgConnection;
+use failure::{Error, _core::fmt::Debug};
+use log::debug;
+use serde::Deserialize;
+
+#[serde(untagged)]
+#[derive(Deserialize, Debug)]
+pub enum CommunityAcceptedObjects {
+  Follow(Follow),
+  Undo(Undo),
+}
+
+impl CommunityAcceptedObjects {
+  fn follow(&self) -> Result<Follow, Error> {
+    match self {
+      CommunityAcceptedObjects::Follow(f) => Ok(f.to_owned()),
+      CommunityAcceptedObjects::Undo(u) => Ok(
+        u.undo_props
+          .get_object_base_box()
+          .to_owned()
+          .unwrap()
+          .to_owned()
+          .into_concrete::<Follow>()?,
+      ),
+    }
+  }
+}
+
+/// Handler for all incoming activities to community inboxes.
+pub async fn community_inbox(
+  request: HttpRequest,
+  input: web::Json<CommunityAcceptedObjects>,
+  path: web::Path<String>,
+  db: DbPoolParam,
+  _chat_server: ChatServerParam,
+) -> Result<HttpResponse, Error> {
+  let input = input.into_inner();
+  let conn = db.get()?;
+  let community = Community::read_from_name(&conn, &path.into_inner())?;
+  if !community.local {
+    return Err(format_err!(
+      "Received activity is addressed to remote community {}",
+      &community.actor_id
+    ));
+  }
+  debug!(
+    "Community {} received activity {:?}",
+    &community.name, &input
+  );
+  let follow = input.follow()?;
+  let user_uri = follow.actor.as_single_xsd_any_uri().unwrap().to_string();
+  let community_uri = follow.object.as_single_xsd_any_uri().unwrap().to_string();
+
+  let conn = db.get()?;
+
+  let user = get_or_fetch_and_upsert_remote_user(&user_uri, &conn)?;
+  let community = get_or_fetch_and_upsert_remote_community(&community_uri, &conn)?;
+
+  verify(&request, &user)?;
+
+  match input {
+    CommunityAcceptedObjects::Follow(f) => handle_follow(&f, &user, &community, &conn),
+    CommunityAcceptedObjects::Undo(u) => handle_undo_follow(&u, &user, &community, &conn),
+  }
+}
+
+/// Handle a follow request from a remote user, adding it to the local database and returning an
+/// Accept activity.
+fn handle_follow(
+  follow: &Follow,
+  user: &User_,
+  community: &Community,
+  conn: &PgConnection,
+) -> Result<HttpResponse, Error> {
+  insert_activity(&conn, user.id, &follow, false)?;
+
+  let community_follower_form = CommunityFollowerForm {
+    community_id: community.id,
+    user_id: user.id,
+  };
+
+  // This will fail if they're already a follower, but ignore the error.
+  CommunityFollower::follow(&conn, &community_follower_form).ok();
+
+  community.send_accept_follow(&follow, &conn)?;
+
+  Ok(HttpResponse::Ok().finish())
+}
+
+fn handle_undo_follow(
+  undo: &Undo,
+  user: &User_,
+  community: &Community,
+  conn: &PgConnection,
+) -> Result<HttpResponse, Error> {
+  insert_activity(&conn, user.id, &undo, false)?;
+
+  let community_follower_form = CommunityFollowerForm {
+    community_id: community.id,
+    user_id: user.id,
+  };
+
+  CommunityFollower::unfollow(&conn, &community_follower_form).ok();
+
+  Ok(HttpResponse::Ok().finish())
+}

server/src/apub/extensions/group_extensions.rs

@@ -0,0 +1,40 @@
+use crate::db::{category::Category, Crud};
+use activitystreams::{ext::Extension, Actor};
+use diesel::PgConnection;
+use failure::Error;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GroupExtension {
+  pub category: GroupCategory,
+  pub sensitive: bool,
+}
+
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GroupCategory {
+  // Using a string because that's how Peertube does it.
+  pub identifier: String,
+  pub name: String,
+}
+
+impl GroupExtension {
+  pub fn new(
+    conn: &PgConnection,
+    category_id: i32,
+    sensitive: bool,
+  ) -> Result<GroupExtension, Error> {
+    let category = Category::read(conn, category_id)?;
+    let group_category = GroupCategory {
+      identifier: category_id.to_string(),
+      name: category.name,
+    };
+    Ok(GroupExtension {
+      category: group_category,
+      sensitive,
+    })
+  }
+}
+
+impl<T> Extension<T> for GroupExtension where T: Actor {}

server/src/apub/extensions/mod.rs

@@ -0,0 +1,3 @@
+pub mod group_extensions;
+pub mod page_extension;
+pub mod signatures;

server/src/apub/extensions/page_extension.rs

@@ -0,0 +1,11 @@
+use activitystreams::{ext::Extension, Base};
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PageExtension {
+  pub comments_enabled: bool,
+  pub sensitive: bool,
+}
+
+impl<T> Extension<T> for PageExtension where T: Base {}

server/src/apub/extensions/signatures.rs

@@ -0,0 +1,136 @@
+use crate::apub::ActorType;
+use activitystreams::ext::Extension;
+use actix_web::HttpRequest;
+use failure::Error;
+use http::request::Builder;
+use http_signature_normalization::Config;
+use log::debug;
+use openssl::{
+  hash::MessageDigest,
+  pkey::PKey,
+  rsa::Rsa,
+  sign::{Signer, Verifier},
+};
+use serde::{Deserialize, Serialize};
+use std::collections::BTreeMap;
+
+lazy_static! {
+  static ref HTTP_SIG_CONFIG: Config = Config::new();
+}
+
+pub struct Keypair {
+  pub private_key: String,
+  pub public_key: String,
+}
+
+/// Generate the asymmetric keypair for ActivityPub HTTP signatures.
+pub fn generate_actor_keypair() -> Result<Keypair, Error> {
+  let rsa = Rsa::generate(2048)?;
+  let pkey = PKey::from_rsa(rsa)?;
+  let public_key = pkey.public_key_to_pem()?;
+  let private_key = pkey.private_key_to_pem_pkcs8()?;
+  Ok(Keypair {
+    private_key: String::from_utf8(private_key)?,
+    public_key: String::from_utf8(public_key)?,
+  })
+}
+
+/// Signs request headers with the given keypair.
+pub fn sign(request: &Builder, actor: &dyn ActorType) -> Result<String, Error> {
+  let signing_key_id = format!("{}#main-key", actor.actor_id());
+
+  let headers = request
+    .headers_ref()
+    .unwrap()
+    .iter()
+    .map(|h| -> Result<(String, String), Error> {
+      Ok((h.0.as_str().to_owned(), h.1.to_str()?.to_owned()))
+    })
+    .collect::<Result<BTreeMap<String, String>, Error>>()?;
+
+  let signature_header_value = HTTP_SIG_CONFIG
+    .begin_sign(
+      request.method_ref().unwrap().as_str(),
+      request
+        .uri_ref()
+        .unwrap()
+        .path_and_query()
+        .unwrap()
+        .as_str(),
+      headers,
+    )?
+    .sign(signing_key_id, |signing_string| {
+      let private_key = PKey::private_key_from_pem(actor.private_key().as_bytes())?;
+      let mut signer = Signer::new(MessageDigest::sha256(), &private_key).unwrap();
+      signer.update(signing_string.as_bytes()).unwrap();
+      Ok(base64::encode(signer.sign_to_vec()?)) as Result<_, Error>
+    })?
+    .signature_header();
+
+  Ok(signature_header_value)
+}
+
+pub fn verify(request: &HttpRequest, actor: &dyn ActorType) -> Result<(), Error> {
+  let headers = request
+    .headers()
+    .iter()
+    .map(|h| -> Result<(String, String), Error> {
+      Ok((h.0.as_str().to_owned(), h.1.to_str()?.to_owned()))
+    })
+    .collect::<Result<BTreeMap<String, String>, Error>>()?;
+
+  let verified = HTTP_SIG_CONFIG
+    .begin_verify(
+      request.method().as_str(),
+      request.uri().path_and_query().unwrap().as_str(),
+      headers,
+    )?
+    .verify(|signature, signing_string| -> Result<bool, Error> {
+      debug!(
+        "Verifying with key {}, message {}",
+        &actor.public_key(),
+        &signing_string
+      );
+      let public_key = PKey::public_key_from_pem(actor.public_key().as_bytes())?;
+      let mut verifier = Verifier::new(MessageDigest::sha256(), &public_key).unwrap();
+      verifier.update(&signing_string.as_bytes()).unwrap();
+      Ok(verifier.verify(&base64::decode(signature)?)?)
+    })?;
+
+  if verified {
+    debug!("verified signature for {}", &request.uri());
+    Ok(())
+  } else {
+    Err(format_err!(
+      "Invalid signature on request: {}",
+      &request.uri()
+    ))
+  }
+}
+
+// The following is taken from here:
+// https://docs.rs/activitystreams/0.5.0-alpha.17/activitystreams/ext/index.html
+
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PublicKey {
+  pub id: String,
+  pub owner: String,
+  pub public_key_pem: String,
+}
+
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PublicKeyExtension {
+  pub public_key: PublicKey,
+}
+
+impl PublicKey {
+  pub fn to_ext(&self) -> PublicKeyExtension {
+    PublicKeyExtension {
+      public_key: self.to_owned(),
+    }
+  }
+}
+
+impl<T> Extension<T> for PublicKeyExtension where T: activitystreams::Actor {}

server/src/apub/fetcher.rs

@@ -0,0 +1,322 @@
+use activitystreams::object::Note;
+use actix_web::Result;
+use diesel::{result::Error::NotFound, PgConnection};
+use failure::{Error, _core::fmt::Debug};
+use isahc::prelude::*;
+use log::debug;
+use serde::Deserialize;
+use std::time::Duration;
+use url::Url;
+
+use crate::{
+  api::site::SearchResponse,
+  db::{
+    comment::{Comment, CommentForm},
+    comment_view::CommentView,
+    community::{Community, CommunityForm, CommunityModerator, CommunityModeratorForm},
+    community_view::CommunityView,
+    post::{Post, PostForm},
+    post_view::PostView,
+    user::{UserForm, User_},
+    Crud,
+    Joinable,
+    SearchType,
+  },
+  naive_now,
+  routes::nodeinfo::{NodeInfo, NodeInfoWellKnown},
+};
+
+use crate::{
+  apub::{
+    get_apub_protocol_string,
+    is_apub_id_valid,
+    FromApub,
+    GroupExt,
+    PageExt,
+    PersonExt,
+    APUB_JSON_CONTENT_TYPE,
+  },
+  db::user_view::UserView,
+};
+
+// Fetch nodeinfo metadata from a remote instance.
+fn _fetch_node_info(domain: &str) -> Result<NodeInfo, Error> {
+  let well_known_uri = Url::parse(&format!(
+    "{}://{}/.well-known/nodeinfo",
+    get_apub_protocol_string(),
+    domain
+  ))?;
+  let well_known = fetch_remote_object::<NodeInfoWellKnown>(&well_known_uri)?;
+  Ok(fetch_remote_object::<NodeInfo>(&well_known.links.href)?)
+}
+
+/// Fetch any type of ActivityPub object, handling things like HTTP headers, deserialisation,
+/// timeouts etc.
+pub fn fetch_remote_object<Response>(url: &Url) -> Result<Response, Error>
+where
+  Response: for<'de> Deserialize<'de>,
+{
+  if !is_apub_id_valid(&url) {
+    return Err(format_err!("Activitypub uri invalid or blocked: {}", url));
+  }
+  // TODO: this function should return a future
+  let timeout = Duration::from_secs(60);
+  let text = Request::get(url.as_str())
+    .header("Accept", APUB_JSON_CONTENT_TYPE)
+    .connect_timeout(timeout)
+    .timeout(timeout)
+    .body(())?
+    .send()?
+    .text()?;
+  let res: Response = serde_json::from_str(&text)?;
+  Ok(res)
+}
+
+/// The types of ActivityPub objects that can be fetched directly by searching for their ID.
+#[serde(untagged)]
+#[derive(serde::Deserialize, Debug)]
+pub enum SearchAcceptedObjects {
+  Person(Box<PersonExt>),
+  Group(Box<GroupExt>),
+  Page(Box<PageExt>),
+  Comment(Box<Note>),
+}
+
+/// Attempt to parse the query as URL, and fetch an ActivityPub object from it.
+///
+/// Some working examples for use with the docker/federation/ setup:
+/// http://lemmy_alpha:8540/c/main, or !main@lemmy_alpha:8540
+/// http://lemmy_alpha:8540/u/lemmy_alpha, or @lemmy_alpha@lemmy_alpha:8540
+/// http://lemmy_alpha:8540/post/3
+/// http://lemmy_alpha:8540/comment/2
+pub fn search_by_apub_id(query: &str, conn: &PgConnection) -> Result<SearchResponse, Error> {
+  // Parse the shorthand query url
+  let query_url = if query.contains('@') {
+    debug!("{}", query);
+    let split = query.split('@').collect::<Vec<&str>>();
+
+    // User type will look like ['', username, instance]
+    // Community will look like [!community, instance]
+    let (name, instance) = if split.len() == 3 {
+      (format!("/u/{}", split[1]), split[2])
+    } else if split.len() == 2 {
+      if split[0].contains('!') {
+        let split2 = split[0].split('!').collect::<Vec<&str>>();
+        (format!("/c/{}", split2[1]), split[1])
+      } else {
+        return Err(format_err!("Invalid search query: {}", query));
+      }
+    } else {
+      return Err(format_err!("Invalid search query: {}", query));
+    };
+
+    let url = format!("{}://{}{}", get_apub_protocol_string(), instance, name);
+    Url::parse(&url)?
+  } else {
+    Url::parse(&query)?
+  };
+
+  let mut response = SearchResponse {
+    type_: SearchType::All.to_string(),
+    comments: vec![],
+    posts: vec![],
+    communities: vec![],
+    users: vec![],
+  };
+  match fetch_remote_object::<SearchAcceptedObjects>(&query_url)? {
+    SearchAcceptedObjects::Person(p) => {
+      let user_uri = p.inner.object_props.get_id().unwrap().to_string();
+      let user = get_or_fetch_and_upsert_remote_user(&user_uri, &conn)?;
+      response.users = vec![UserView::read(conn, user.id)?];
+    }
+    SearchAcceptedObjects::Group(g) => {
+      let community_uri = g.inner.object_props.get_id().unwrap().to_string();
+      let community = get_or_fetch_and_upsert_remote_community(&community_uri, &conn)?;
+      // TODO Maybe at some point in the future, fetch all the history of a community
+      // fetch_community_outbox(&c, conn)?;
+      response.communities = vec![CommunityView::read(conn, community.id, None)?];
+    }
+    SearchAcceptedObjects::Page(p) => {
+      let p = upsert_post(&PostForm::from_apub(&p, conn)?, conn)?;
+      response.posts = vec![PostView::read(conn, p.id, None)?];
+    }
+    SearchAcceptedObjects::Comment(c) => {
+      let post_url = c
+        .object_props
+        .get_many_in_reply_to_xsd_any_uris()
+        .unwrap()
+        .next()
+        .unwrap()
+        .to_string();
+      // TODO: also fetch parent comments if any
+      let post = fetch_remote_object(&Url::parse(&post_url)?)?;
+      upsert_post(&PostForm::from_apub(&post, conn)?, conn)?;
+      let c = upsert_comment(&CommentForm::from_apub(&c, conn)?, conn)?;
+      response.comments = vec![CommentView::read(conn, c.id, None)?];
+    }
+  }
+  Ok(response)
+}
+
+/// Check if a remote user exists, create if not found, if its too old update it.Fetch a user, insert/update it in the database and return the user.
+pub fn get_or_fetch_and_upsert_remote_user(
+  apub_id: &str,
+  conn: &PgConnection,
+) -> Result<User_, Error> {
+  match User_::read_from_actor_id(&conn, &apub_id) {
+    Ok(u) => {
+      // If its older than a day, re-fetch it
+      if !u.local
+        && u
+          .last_refreshed_at
+          // TODO it won't pick up new avatars, summaries etc until a day after.
+          // Both user and community need an "update" action pushed to other servers
+          // to fix this
+          .lt(&(naive_now() - chrono::Duration::days(1)))
+      {
+        debug!("Fetching and updating from remote user: {}", apub_id);
+        let person = fetch_remote_object::<PersonExt>(&Url::parse(apub_id)?)?;
+        let mut uf = UserForm::from_apub(&person, &conn)?;
+        uf.last_refreshed_at = Some(naive_now());
+        Ok(User_::update(&conn, u.id, &uf)?)
+      } else {
+        Ok(u)
+      }
+    }
+    Err(NotFound {}) => {
+      debug!("Fetching and creating remote user: {}", apub_id);
+      let person = fetch_remote_object::<PersonExt>(&Url::parse(apub_id)?)?;
+      let uf = UserForm::from_apub(&person, &conn)?;
+      Ok(User_::create(conn, &uf)?)
+    }
+    Err(e) => Err(Error::from(e)),
+  }
+}
+
+/// Check if a remote community exists, create if not found, if its too old update it.Fetch a community, insert/update it in the database and return the community.
+pub fn get_or_fetch_and_upsert_remote_community(
+  apub_id: &str,
+  conn: &PgConnection,
+) -> Result<Community, Error> {
+  match Community::read_from_actor_id(&conn, &apub_id) {
+    Ok(c) => {
+      // If its older than a day, re-fetch it
+      if !c.local
+        && c
+          .last_refreshed_at
+          .lt(&(naive_now() - chrono::Duration::days(1)))
+      {
+        debug!("Fetching and updating from remote community: {}", apub_id);
+        let group = fetch_remote_object::<GroupExt>(&Url::parse(apub_id)?)?;
+        let mut cf = CommunityForm::from_apub(&group, conn)?;
+        cf.last_refreshed_at = Some(naive_now());
+        Ok(Community::update(&conn, c.id, &cf)?)
+      } else {
+        Ok(c)
+      }
+    }
+    Err(NotFound {}) => {
+      debug!("Fetching and creating remote community: {}", apub_id);
+      let group = fetch_remote_object::<GroupExt>(&Url::parse(apub_id)?)?;
+      let cf = CommunityForm::from_apub(&group, conn)?;
+      let community = Community::create(conn, &cf)?;
+
+      // Also add the community moderators too
+      let creator_and_moderator_uris = group
+        .inner
+        .object_props
+        .get_many_attributed_to_xsd_any_uris()
+        .unwrap();
+      let creator_and_moderators = creator_and_moderator_uris
+        .map(|c| get_or_fetch_and_upsert_remote_user(&c.to_string(), &conn).unwrap())
+        .collect::<Vec<User_>>();
+
+      for mod_ in creator_and_moderators {
+        let community_moderator_form = CommunityModeratorForm {
+          community_id: community.id,
+          user_id: mod_.id,
+        };
+        CommunityModerator::join(&conn, &community_moderator_form)?;
+      }
+
+      Ok(community)
+    }
+    Err(e) => Err(Error::from(e)),
+  }
+}
+
+fn upsert_post(post_form: &PostForm, conn: &PgConnection) -> Result<Post, Error> {
+  let existing = Post::read_from_apub_id(conn, &post_form.ap_id);
+  match existing {
+    Err(NotFound {}) => Ok(Post::create(conn, &post_form)?),
+    Ok(p) => Ok(Post::update(conn, p.id, &post_form)?),
+    Err(e) => Err(Error::from(e)),
+  }
+}
+
+pub fn get_or_fetch_and_insert_remote_post(
+  post_ap_id: &str,
+  conn: &PgConnection,
+) -> Result<Post, Error> {
+  match Post::read_from_apub_id(conn, post_ap_id) {
+    Ok(p) => Ok(p),
+    Err(NotFound {}) => {
+      debug!("Fetching and creating remote post: {}", post_ap_id);
+      let post = fetch_remote_object::<PageExt>(&Url::parse(post_ap_id)?)?;
+      let post_form = PostForm::from_apub(&post, conn)?;
+      Ok(Post::create(conn, &post_form)?)
+    }
+    Err(e) => Err(Error::from(e)),
+  }
+}
+
+fn upsert_comment(comment_form: &CommentForm, conn: &PgConnection) -> Result<Comment, Error> {
+  let existing = Comment::read_from_apub_id(conn, &comment_form.ap_id);
+  match existing {
+    Err(NotFound {}) => Ok(Comment::create(conn, &comment_form)?),
+    Ok(p) => Ok(Comment::update(conn, p.id, &comment_form)?),
+    Err(e) => Err(Error::from(e)),
+  }
+}
+
+pub fn get_or_fetch_and_insert_remote_comment(
+  comment_ap_id: &str,
+  conn: &PgConnection,
+) -> Result<Comment, Error> {
+  match Comment::read_from_apub_id(conn, comment_ap_id) {
+    Ok(p) => Ok(p),
+    Err(NotFound {}) => {
+      debug!(
+        "Fetching and creating remote comment and its parents: {}",
+        comment_ap_id
+      );
+      let comment = fetch_remote_object::<Note>(&Url::parse(comment_ap_id)?)?;
+      let comment_form = CommentForm::from_apub(&comment, conn)?;
+      Ok(Comment::create(conn, &comment_form)?)
+    }
+    Err(e) => Err(Error::from(e)),
+  }
+}
+
+// TODO It should not be fetching data from a community outbox.
+// All posts, comments, comment likes, etc should be posts to our community_inbox
+// The only data we should be periodically fetching (if it hasn't been fetched in the last day
+// maybe), is community and user actors
+// and user actors
+// Fetch all posts in the outbox of the given user, and insert them into the database.
+// fn fetch_community_outbox(community: &Community, conn: &PgConnection) -> Result<Vec<Post>, Error> {
+//   let outbox_url = Url::parse(&community.get_outbox_url())?;
+//   let outbox = fetch_remote_object::<OrderedCollection>(&outbox_url)?;
+//   let items = outbox.collection_props.get_many_items_base_boxes();
+
+//   Ok(
+//     items
+//       .unwrap()
+//       .map(|obox: &BaseBox| -> Result<PostForm, Error> {
+//         let page = obox.clone().to_concrete::<Page>()?;
+//         PostForm::from_page(&page, conn)
+//       })
+//       .map(|pf| upsert_post(&pf?, conn))
+//       .collect::<Result<Vec<Post>, Error>>()?,
+//   )
+// }

server/src/apub/mod.rs

@@ -1,107 +1,267 @@
+pub mod activities;
+pub mod comment;
 pub mod community;
+pub mod community_inbox;
+pub mod extensions;
+pub mod fetcher;
 pub mod post;
+pub mod private_message;
+pub mod shared_inbox;
 pub mod user;
-use crate::Settings;
+pub mod user_inbox;
 
-use std::fmt::Display;
+use crate::{
+  apub::extensions::{
+    group_extensions::GroupExtension,
+    page_extension::PageExtension,
+    signatures::{PublicKey, PublicKeyExtension},
+  },
+  convert_datetime,
+  db::user::User_,
+  routes::webfinger::WebFingerResponse,
+  MentionData,
+  Settings,
+};
+use activitystreams::{
+  actor::{properties::ApActorProperties, Group, Person},
+  object::Page,
+};
+use activitystreams_ext::{Ext1, Ext2, Ext3};
+use activitystreams_new::{activity::Follow, object::Tombstone, prelude::*};
+use actix_web::{body::Body, HttpResponse, Result};
+use chrono::NaiveDateTime;
+use diesel::PgConnection;
+use failure::Error;
+use isahc::prelude::*;
+use log::debug;
+use serde::Serialize;
+use url::Url;
 
-#[cfg(test)]
-mod tests {
-  use crate::db::community::Community;
-  use crate::db::post::Post;
-  use crate::db::user::User_;
-  use crate::db::{ListingType, SortType};
-  use crate::{naive_now, Settings};
+type GroupExt = Ext3<Group, GroupExtension, ApActorProperties, PublicKeyExtension>;
+type PersonExt = Ext2<Person, ApActorProperties, PublicKeyExtension>;
+type PageExt = Ext1<Page, PageExtension>;
 
-  #[test]
-  fn test_person() {
-    let user = User_ {
-      id: 52,
-      name: "thom".into(),
-      fedi_name: "rrf".into(),
-      preferred_username: None,
-      password_encrypted: "here".into(),
-      email: None,
-      matrix_user_id: None,
-      avatar: None,
-      published: naive_now(),
-      admin: false,
-      banned: false,
-      updated: None,
-      show_nsfw: false,
-      theme: "darkly".into(),
-      default_sort_type: SortType::Hot as i16,
-      default_listing_type: ListingType::Subscribed as i16,
-      lang: "browser".into(),
-      show_avatars: true,
-      send_notifications_to_email: false,
-    };
+pub static APUB_JSON_CONTENT_TYPE: &str = "application/activity+json";
 
-    let person = user.as_person();
-    assert_eq!(
-      format!("https://{}/federation/u/thom", Settings::get().hostname),
-      person.object_props.id_string().unwrap()
-    );
-  }
-
-  #[test]
-  fn test_community() {
-    let community = Community {
-      id: 42,
-      name: "Test".into(),
-      title: "Test Title".into(),
-      description: Some("Test community".into()),
-      category_id: 32,
-      creator_id: 52,
-      removed: false,
-      published: naive_now(),
-      updated: Some(naive_now()),
-      deleted: false,
-      nsfw: false,
-    };
-
-    let group = community.as_group();
-    assert_eq!(
-      format!("https://{}/federation/c/Test", Settings::get().hostname),
-      group.object_props.id_string().unwrap()
-    );
-  }
-
-  #[test]
-  fn test_post() {
-    let post = Post {
-      id: 62,
-      name: "A test post".into(),
-      url: None,
-      body: None,
-      creator_id: 52,
-      community_id: 42,
-      published: naive_now(),
-      removed: false,
-      locked: false,
-      stickied: false,
-      nsfw: false,
-      deleted: false,
-      updated: None,
-      embed_title: None,
-      embed_description: None,
-      embed_html: None,
-      thumbnail_url: None,
-    };
-
-    let page = post.as_page();
-    assert_eq!(
-      format!("https://{}/federation/post/62", Settings::get().hostname),
-      page.object_props.id_string().unwrap()
-    );
-  }
+pub enum EndpointType {
+  Community,
+  User,
+  Post,
+  Comment,
+  PrivateMessage,
 }
 
-pub fn make_apub_endpoint<S: Display, T: Display>(point: S, value: T) -> String {
-  format!(
-    "https://{}/federation/{}/{}",
+/// Convert the data to json and turn it into an HTTP Response with the correct ActivityPub
+/// headers.
+fn create_apub_response<T>(data: &T) -> HttpResponse<Body>
+where
+  T: Serialize,
+{
+  HttpResponse::Ok()
+    .content_type(APUB_JSON_CONTENT_TYPE)
+    .json(data)
+}
+
+fn create_apub_tombstone_response<T>(data: &T) -> HttpResponse<Body>
+where
+  T: Serialize,
+{
+  HttpResponse::Gone()
+    .content_type(APUB_JSON_CONTENT_TYPE)
+    .json(data)
+}
+
+/// Generates the ActivityPub ID for a given object type and ID.
+pub fn make_apub_endpoint(endpoint_type: EndpointType, name: &str) -> Url {
+  let point = match endpoint_type {
+    EndpointType::Community => "c",
+    EndpointType::User => "u",
+    EndpointType::Post => "post",
+    EndpointType::Comment => "comment",
+    EndpointType::PrivateMessage => "private_message",
+  };
+
+  Url::parse(&format!(
+    "{}://{}/{}/{}",
+    get_apub_protocol_string(),
     Settings::get().hostname,
     point,
-    value
+    name
+  ))
+  .unwrap()
+}
+
+pub fn get_apub_protocol_string() -> &'static str {
+  if Settings::get().federation.tls_enabled {
+    "https"
+  } else {
+    "http"
+  }
+}
+
+// Checks if the ID has a valid format, correct scheme, and is in the whitelist.
+fn is_apub_id_valid(apub_id: &Url) -> bool {
+  if apub_id.scheme() != get_apub_protocol_string() {
+    return false;
+  }
+
+  let whitelist: Vec<String> = Settings::get()
+    .federation
+    .instance_whitelist
+    .split(',')
+    .map(|d| d.to_string())
+    .collect();
+  match apub_id.domain() {
+    Some(d) => whitelist.contains(&d.to_owned()),
+    None => false,
+  }
+}
+
+pub trait ToApub {
+  type Response;
+  fn to_apub(&self, conn: &PgConnection) -> Result<Self::Response, Error>;
+  fn to_tombstone(&self) -> Result<Tombstone, Error>;
+}
+
+/// Updated is actually the deletion time
+fn create_tombstone(
+  deleted: bool,
+  object_id: &str,
+  updated: Option<NaiveDateTime>,
+  former_type: String,
+) -> Result<Tombstone, Error> {
+  if deleted {
+    if let Some(updated) = updated {
+      let mut tombstone = Tombstone::new();
+      tombstone.set_id(object_id.parse()?);
+      tombstone.set_former_type(former_type);
+      tombstone.set_deleted(convert_datetime(updated).into());
+      Ok(tombstone)
+    } else {
+      Err(format_err!(
+        "Cant convert to tombstone because updated time was None."
+      ))
+    }
+  } else {
+    Err(format_err!(
+      "Cant convert object to tombstone if it wasnt deleted"
+    ))
+  }
+}
+
+pub trait FromApub {
+  type ApubType;
+  fn from_apub(apub: &Self::ApubType, conn: &PgConnection) -> Result<Self, Error>
+  where
+    Self: Sized;
+}
+
+pub trait ApubObjectType {
+  fn send_create(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error>;
+  fn send_update(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error>;
+  fn send_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error>;
+  fn send_undo_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error>;
+  fn send_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error>;
+  fn send_undo_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error>;
+}
+
+pub trait ApubLikeableType {
+  fn send_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error>;
+  fn send_dislike(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error>;
+  fn send_undo_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error>;
+}
+
+pub fn get_shared_inbox(actor_id: &str) -> String {
+  let url = Url::parse(actor_id).unwrap();
+  format!(
+    "{}://{}{}/inbox",
+    &url.scheme(),
+    &url.host_str().unwrap(),
+    if let Some(port) = url.port() {
+      format!(":{}", port)
+    } else {
+      "".to_string()
+    },
   )
 }
+
+pub trait ActorType {
+  fn actor_id(&self) -> String;
+
+  fn public_key(&self) -> String;
+  fn private_key(&self) -> String;
+
+  // These two have default impls, since currently a community can't follow anything,
+  // and a user can't be followed (yet)
+  #[allow(unused_variables)]
+  fn send_follow(&self, follow_actor_id: &str, conn: &PgConnection) -> Result<(), Error>;
+  fn send_unfollow(&self, follow_actor_id: &str, conn: &PgConnection) -> Result<(), Error>;
+
+  #[allow(unused_variables)]
+  fn send_accept_follow(&self, follow: &Follow, conn: &PgConnection) -> Result<(), Error>;
+
+  fn send_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error>;
+  fn send_undo_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error>;
+
+  fn send_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error>;
+  fn send_undo_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error>;
+
+  /// For a given community, returns the inboxes of all followers.
+  fn get_follower_inboxes(&self, conn: &PgConnection) -> Result<Vec<String>, Error>;
+
+  // TODO move these to the db rows
+  fn get_inbox_url(&self) -> String {
+    format!("{}/inbox", &self.actor_id())
+  }
+
+  fn get_shared_inbox_url(&self) -> String {
+    get_shared_inbox(&self.actor_id())
+  }
+
+  fn get_outbox_url(&self) -> String {
+    format!("{}/outbox", &self.actor_id())
+  }
+
+  fn get_followers_url(&self) -> String {
+    format!("{}/followers", &self.actor_id())
+  }
+
+  fn get_following_url(&self) -> String {
+    format!("{}/following", &self.actor_id())
+  }
+
+  fn get_liked_url(&self) -> String {
+    format!("{}/liked", &self.actor_id())
+  }
+
+  fn get_public_key_ext(&self) -> PublicKeyExtension {
+    PublicKey {
+      id: format!("{}#main-key", self.actor_id()),
+      owner: self.actor_id(),
+      public_key_pem: self.public_key(),
+    }
+    .to_ext()
+  }
+}
+
+pub fn fetch_webfinger_url(mention: &MentionData) -> Result<String, Error> {
+  let fetch_url = format!(
+    "{}://{}/.well-known/webfinger?resource=acct:{}@{}",
+    get_apub_protocol_string(),
+    mention.domain,
+    mention.name,
+    mention.domain
+  );
+  debug!("Fetching webfinger url: {}", &fetch_url);
+  let text = isahc::get(&fetch_url)?.text()?;
+  let res: WebFingerResponse = serde_json::from_str(&text)?;
+  let link = res
+    .links
+    .iter()
+    .find(|l| l.type_.eq(&Some("application/activity+json".to_string())))
+    .ok_or_else(|| format_err!("No application/activity+json link found."))?;
+  link
+    .href
+    .to_owned()
+    .ok_or_else(|| format_err!("No href found."))
+}

server/src/apub/post.rs

@@ -1,38 +1,518 @@
-use crate::apub::make_apub_endpoint;
-use crate::db::post::Post;
-use crate::to_datetime_utc;
-use activitypub::{context, object::Page};
+use crate::{
+  apub::{
+    activities::{populate_object_props, send_activity_to_community},
+    create_apub_response,
+    create_apub_tombstone_response,
+    create_tombstone,
+    extensions::page_extension::PageExtension,
+    fetcher::{get_or_fetch_and_upsert_remote_community, get_or_fetch_and_upsert_remote_user},
+    get_apub_protocol_string,
+    ActorType,
+    ApubLikeableType,
+    ApubObjectType,
+    FromApub,
+    PageExt,
+    ToApub,
+  },
+  convert_datetime,
+  db::{
+    community::Community,
+    post::{Post, PostForm},
+    user::User_,
+    Crud,
+  },
+  routes::DbPoolParam,
+  Settings,
+};
+use activitystreams::{
+  activity::{Create, Delete, Dislike, Like, Remove, Undo, Update},
+  context,
+  object::{kind::PageType, properties::ObjectProperties, AnyImage, Image, Page},
+  BaseBox,
+};
+use activitystreams_ext::Ext1;
+use activitystreams_new::object::Tombstone;
+use actix_web::{body::Body, web::Path, HttpResponse, Result};
+use diesel::PgConnection;
+use failure::Error;
+use serde::Deserialize;
 
-impl Post {
-  pub fn as_page(&self) -> Page {
-    let base_url = make_apub_endpoint("post", self.id);
-    let mut page = Page::default();
+#[derive(Deserialize)]
+pub struct PostQuery {
+  post_id: String,
+}
 
-    page.object_props.set_context_object(context()).ok();
-    page.object_props.set_id_string(base_url).ok();
-    page.object_props.set_name_string(self.name.to_owned()).ok();
-
-    if let Some(body) = &self.body {
-      page.object_props.set_content_string(body.to_owned()).ok();
-    }
-
-    if let Some(url) = &self.url {
-      page.object_props.set_url_string(url.to_owned()).ok();
-    }
-
-    //page.object_props.set_attributed_to_string
-
-    page
-      .object_props
-      .set_published_utctime(to_datetime_utc(self.published))
-      .ok();
-    if let Some(updated) = self.updated {
-      page
-        .object_props
-        .set_updated_utctime(to_datetime_utc(updated))
-        .ok();
-    }
-
-    page
+/// Return the post json over HTTP.
+pub async fn get_apub_post(
+  info: Path<PostQuery>,
+  db: DbPoolParam,
+) -> Result<HttpResponse<Body>, Error> {
+  let id = info.post_id.parse::<i32>()?;
+  let post = Post::read(&&db.get()?, id)?;
+  if !post.deleted {
+    Ok(create_apub_response(&post.to_apub(&db.get().unwrap())?))
+  } else {
+    Ok(create_apub_tombstone_response(&post.to_tombstone()?))
+  }
+}
+
+impl ToApub for Post {
+  type Response = PageExt;
+
+  // Turn a Lemmy post into an ActivityPub page that can be sent out over the network.
+  fn to_apub(&self, conn: &PgConnection) -> Result<PageExt, Error> {
+    let mut page = Page::default();
+    let oprops: &mut ObjectProperties = page.as_mut();
+    let creator = User_::read(conn, self.creator_id)?;
+    let community = Community::read(conn, self.community_id)?;
+
+    oprops
+      // Not needed when the Post is embedded in a collection (like for community outbox)
+      // TODO: need to set proper context defining sensitive/commentsEnabled fields
+      // https://git.asonix.dog/Aardwolf/activitystreams/issues/5
+      .set_context_xsd_any_uri(context())?
+      .set_id(self.ap_id.to_owned())?
+      // Use summary field to be consistent with mastodon content warning.
+      // https://mastodon.xyz/@Louisa/103987265222901387.json
+      .set_summary_xsd_string(self.name.to_owned())?
+      .set_published(convert_datetime(self.published))?
+      .set_to_xsd_any_uri(community.actor_id)?
+      .set_attributed_to_xsd_any_uri(creator.actor_id)?;
+
+    if let Some(body) = &self.body {
+      oprops.set_content_xsd_string(body.to_owned())?;
+    }
+
+    // TODO: hacky code because we get self.url == Some("")
+    // https://github.com/LemmyNet/lemmy/issues/602
+    let url = self.url.as_ref().filter(|u| !u.is_empty());
+    if let Some(u) = url {
+      oprops.set_url_xsd_any_uri(u.to_owned())?;
+
+      // Embeds
+      let mut page_preview = Page::new();
+      page_preview
+        .object_props
+        .set_url_xsd_any_uri(u.to_owned())?;
+
+      if let Some(embed_title) = &self.embed_title {
+        page_preview
+          .object_props
+          .set_name_xsd_string(embed_title.to_owned())?;
+      }
+
+      if let Some(embed_description) = &self.embed_description {
+        page_preview
+          .object_props
+          .set_summary_xsd_string(embed_description.to_owned())?;
+      }
+
+      if let Some(embed_html) = &self.embed_html {
+        page_preview
+          .object_props
+          .set_content_xsd_string(embed_html.to_owned())?;
+      }
+
+      oprops.set_preview_base_box(page_preview)?;
+    }
+
+    if let Some(thumbnail_url) = &self.thumbnail_url {
+      let full_url = format!(
+        "{}://{}/pictshare/{}",
+        get_apub_protocol_string(),
+        Settings::get().hostname,
+        thumbnail_url
+      );
+
+      let mut image = Image::new();
+      image.object_props.set_url_xsd_any_uri(full_url)?;
+      let any_image = AnyImage::from_concrete(image)?;
+      oprops.set_image_any_image(any_image)?;
+    }
+
+    if let Some(u) = self.updated {
+      oprops.set_updated(convert_datetime(u))?;
+    }
+
+    let ext = PageExtension {
+      comments_enabled: !self.locked,
+      sensitive: self.nsfw,
+    };
+    Ok(Ext1::new(page, ext))
+  }
+
+  fn to_tombstone(&self) -> Result<Tombstone, Error> {
+    create_tombstone(
+      self.deleted,
+      &self.ap_id,
+      self.updated,
+      PageType.to_string(),
+    )
+  }
+}
+
+impl FromApub for PostForm {
+  type ApubType = PageExt;
+
+  /// Parse an ActivityPub page received from another instance into a Lemmy post.
+  fn from_apub(page: &PageExt, conn: &PgConnection) -> Result<PostForm, Error> {
+    let ext = &page.ext_one;
+    let oprops = &page.inner.object_props;
+    let creator_actor_id = &oprops.get_attributed_to_xsd_any_uri().unwrap().to_string();
+    let creator = get_or_fetch_and_upsert_remote_user(&creator_actor_id, &conn)?;
+    let community_actor_id = &oprops.get_to_xsd_any_uri().unwrap().to_string();
+    let community = get_or_fetch_and_upsert_remote_community(&community_actor_id, &conn)?;
+
+    let thumbnail_url = match oprops.get_image_any_image() {
+      Some(any_image) => any_image
+        .to_owned()
+        .into_concrete::<Image>()?
+        .object_props
+        .get_url_xsd_any_uri()
+        .map(|u| u.to_string()),
+      None => None,
+    };
+
+    let url = oprops.get_url_xsd_any_uri().map(|u| u.to_string());
+    let (embed_title, embed_description, embed_html) = match oprops.get_preview_base_box() {
+      Some(preview) => {
+        let preview_page = preview.to_owned().into_concrete::<Page>()?;
+        let name = preview_page
+          .object_props
+          .get_name_xsd_string()
+          .map(|n| n.to_string());
+        let summary = preview_page
+          .object_props
+          .get_summary_xsd_string()
+          .map(|s| s.to_string());
+        let content = preview_page
+          .object_props
+          .get_content_xsd_string()
+          .map(|c| c.to_string());
+        (name, summary, content)
+      }
+      None => (None, None, None),
+    };
+
+    Ok(PostForm {
+      name: oprops.get_summary_xsd_string().unwrap().to_string(),
+      url,
+      body: oprops.get_content_xsd_string().map(|c| c.to_string()),
+      creator_id: creator.id,
+      community_id: community.id,
+      removed: None,
+      locked: Some(!ext.comments_enabled),
+      published: oprops
+        .get_published()
+        .map(|u| u.as_ref().to_owned().naive_local()),
+      updated: oprops
+        .get_updated()
+        .map(|u| u.as_ref().to_owned().naive_local()),
+      deleted: None,
+      nsfw: ext.sensitive,
+      stickied: None, // -> put it in "featured" collection of the community
+      embed_title,
+      embed_description,
+      embed_html,
+      thumbnail_url,
+      ap_id: oprops.get_id().unwrap().to_string(),
+      local: false,
+    })
+  }
+}
+
+impl ApubObjectType for Post {
+  /// Send out information about a newly created post, to the followers of the community.
+  fn send_create(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let page = self.to_apub(conn)?;
+    let community = Community::read(conn, self.community_id)?;
+    let id = format!("{}/create/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let mut create = Create::new();
+    populate_object_props(
+      &mut create.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+    create
+      .create_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(page)?)?;
+
+    send_activity_to_community(
+      creator,
+      conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      create,
+    )?;
+    Ok(())
+  }
+
+  /// Send out information about an edited post, to the followers of the community.
+  fn send_update(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let page = self.to_apub(conn)?;
+    let community = Community::read(conn, self.community_id)?;
+    let id = format!("{}/update/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let mut update = Update::new();
+    populate_object_props(
+      &mut update.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+    update
+      .update_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(page)?)?;
+
+    send_activity_to_community(
+      creator,
+      conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      update,
+    )?;
+    Ok(())
+  }
+
+  fn send_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let page = self.to_apub(conn)?;
+    let community = Community::read(conn, self.community_id)?;
+    let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut delete = Delete::default();
+
+    populate_object_props(
+      &mut delete.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+
+    delete
+      .delete_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(page)?)?;
+
+    let community = Community::read(conn, self.community_id)?;
+
+    send_activity_to_community(
+      creator,
+      conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      delete,
+    )?;
+    Ok(())
+  }
+
+  fn send_undo_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let page = self.to_apub(conn)?;
+    let community = Community::read(conn, self.community_id)?;
+    let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut delete = Delete::default();
+
+    populate_object_props(
+      &mut delete.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+
+    delete
+      .delete_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(page)?)?;
+
+    // TODO
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/delete/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::default();
+
+    populate_object_props(
+      &mut undo.object_props,
+      vec![community.get_followers_url()],
+      &undo_id,
+    )?;
+
+    undo
+      .undo_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(delete)?;
+
+    let community = Community::read(conn, self.community_id)?;
+    send_activity_to_community(
+      creator,
+      conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      undo,
+    )?;
+    Ok(())
+  }
+
+  fn send_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let page = self.to_apub(conn)?;
+    let community = Community::read(conn, self.community_id)?;
+    let id = format!("{}/remove/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut remove = Remove::default();
+
+    populate_object_props(
+      &mut remove.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+
+    remove
+      .remove_props
+      .set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(page)?)?;
+
+    let community = Community::read(conn, self.community_id)?;
+
+    send_activity_to_community(
+      mod_,
+      conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      remove,
+    )?;
+    Ok(())
+  }
+  fn send_undo_remove(&self, mod_: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let page = self.to_apub(conn)?;
+    let community = Community::read(conn, self.community_id)?;
+    let id = format!("{}/remove/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut remove = Remove::default();
+
+    populate_object_props(
+      &mut remove.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+
+    remove
+      .remove_props
+      .set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(page)?)?;
+
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/remove/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::default();
+
+    populate_object_props(
+      &mut undo.object_props,
+      vec![community.get_followers_url()],
+      &undo_id,
+    )?;
+
+    undo
+      .undo_props
+      .set_actor_xsd_any_uri(mod_.actor_id.to_owned())?
+      .set_object_base_box(remove)?;
+
+    let community = Community::read(conn, self.community_id)?;
+    send_activity_to_community(
+      mod_,
+      conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      undo,
+    )?;
+    Ok(())
+  }
+}
+
+impl ApubLikeableType for Post {
+  fn send_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let page = self.to_apub(conn)?;
+    let community = Community::read(conn, self.community_id)?;
+    let id = format!("{}/like/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let mut like = Like::new();
+    populate_object_props(
+      &mut like.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+    like
+      .like_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(page)?)?;
+
+    send_activity_to_community(
+      &creator,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      like,
+    )?;
+    Ok(())
+  }
+
+  fn send_dislike(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let page = self.to_apub(conn)?;
+    let community = Community::read(conn, self.community_id)?;
+    let id = format!("{}/dislike/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let mut dislike = Dislike::new();
+    populate_object_props(
+      &mut dislike.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+    dislike
+      .dislike_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(page)?)?;
+
+    send_activity_to_community(
+      &creator,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      dislike,
+    )?;
+    Ok(())
+  }
+
+  fn send_undo_like(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let page = self.to_apub(conn)?;
+    let community = Community::read(conn, self.community_id)?;
+    let id = format!("{}/like/{}", self.ap_id, uuid::Uuid::new_v4());
+
+    let mut like = Like::new();
+    populate_object_props(
+      &mut like.object_props,
+      vec![community.get_followers_url()],
+      &id,
+    )?;
+    like
+      .like_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(BaseBox::from_concrete(page)?)?;
+
+    // TODO
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/like/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::default();
+
+    populate_object_props(
+      &mut undo.object_props,
+      vec![community.get_followers_url()],
+      &undo_id,
+    )?;
+
+    undo
+      .undo_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(like)?;
+
+    send_activity_to_community(
+      &creator,
+      &conn,
+      &community,
+      vec![community.get_shared_inbox_url()],
+      undo,
+    )?;
+    Ok(())
   }
 }

server/src/apub/private_message.rs

@@ -0,0 +1,211 @@
+use crate::{
+  apub::{
+    activities::send_activity,
+    create_tombstone,
+    fetcher::get_or_fetch_and_upsert_remote_user,
+    ApubObjectType,
+    FromApub,
+    ToApub,
+  },
+  convert_datetime,
+  db::{
+    activity::insert_activity,
+    private_message::{PrivateMessage, PrivateMessageForm},
+    user::User_,
+    Crud,
+  },
+};
+use activitystreams::{
+  activity::{Create, Delete, Undo, Update},
+  context,
+  object::{kind::NoteType, properties::ObjectProperties, Note},
+};
+use activitystreams_new::object::Tombstone;
+use actix_web::Result;
+use diesel::PgConnection;
+use failure::Error;
+
+impl ToApub for PrivateMessage {
+  type Response = Note;
+
+  fn to_apub(&self, conn: &PgConnection) -> Result<Note, Error> {
+    let mut private_message = Note::default();
+    let oprops: &mut ObjectProperties = private_message.as_mut();
+    let creator = User_::read(&conn, self.creator_id)?;
+    let recipient = User_::read(&conn, self.recipient_id)?;
+
+    oprops
+      .set_context_xsd_any_uri(context())?
+      .set_id(self.ap_id.to_owned())?
+      .set_published(convert_datetime(self.published))?
+      .set_content_xsd_string(self.content.to_owned())?
+      .set_to_xsd_any_uri(recipient.actor_id)?
+      .set_attributed_to_xsd_any_uri(creator.actor_id)?;
+
+    if let Some(u) = self.updated {
+      oprops.set_updated(convert_datetime(u))?;
+    }
+
+    Ok(private_message)
+  }
+
+  fn to_tombstone(&self) -> Result<Tombstone, Error> {
+    create_tombstone(
+      self.deleted,
+      &self.ap_id,
+      self.updated,
+      NoteType.to_string(),
+    )
+  }
+}
+
+impl FromApub for PrivateMessageForm {
+  type ApubType = Note;
+
+  /// Parse an ActivityPub note received from another instance into a Lemmy Private message
+  fn from_apub(note: &Note, conn: &PgConnection) -> Result<PrivateMessageForm, Error> {
+    let oprops = &note.object_props;
+    let creator_actor_id = &oprops.get_attributed_to_xsd_any_uri().unwrap().to_string();
+    let creator = get_or_fetch_and_upsert_remote_user(&creator_actor_id, &conn)?;
+    let recipient_actor_id = &oprops.get_to_xsd_any_uri().unwrap().to_string();
+    let recipient = get_or_fetch_and_upsert_remote_user(&recipient_actor_id, &conn)?;
+
+    Ok(PrivateMessageForm {
+      creator_id: creator.id,
+      recipient_id: recipient.id,
+      content: oprops
+        .get_content_xsd_string()
+        .map(|c| c.to_string())
+        .unwrap(),
+      published: oprops
+        .get_published()
+        .map(|u| u.as_ref().to_owned().naive_local()),
+      updated: oprops
+        .get_updated()
+        .map(|u| u.as_ref().to_owned().naive_local()),
+      deleted: None,
+      read: None,
+      ap_id: oprops.get_id().unwrap().to_string(),
+      local: false,
+    })
+  }
+}
+
+impl ApubObjectType for PrivateMessage {
+  /// Send out information about a newly created private message
+  fn send_create(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(conn)?;
+    let id = format!("{}/create/{}", self.ap_id, uuid::Uuid::new_v4());
+    let recipient = User_::read(&conn, self.recipient_id)?;
+
+    let mut create = Create::new();
+    create
+      .object_props
+      .set_context_xsd_any_uri(context())?
+      .set_id(id)?;
+    let to = format!("{}/inbox", recipient.actor_id);
+
+    create
+      .create_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    insert_activity(&conn, creator.id, &create, true)?;
+
+    send_activity(&create, creator, vec![to])?;
+    Ok(())
+  }
+
+  /// Send out information about an edited post, to the followers of the community.
+  fn send_update(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(conn)?;
+    let id = format!("{}/update/{}", self.ap_id, uuid::Uuid::new_v4());
+    let recipient = User_::read(&conn, self.recipient_id)?;
+
+    let mut update = Update::new();
+    update
+      .object_props
+      .set_context_xsd_any_uri(context())?
+      .set_id(id)?;
+    let to = format!("{}/inbox", recipient.actor_id);
+
+    update
+      .update_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    insert_activity(&conn, creator.id, &update, true)?;
+
+    send_activity(&update, creator, vec![to])?;
+    Ok(())
+  }
+
+  fn send_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(conn)?;
+    let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
+    let recipient = User_::read(&conn, self.recipient_id)?;
+
+    let mut delete = Delete::new();
+    delete
+      .object_props
+      .set_context_xsd_any_uri(context())?
+      .set_id(id)?;
+    let to = format!("{}/inbox", recipient.actor_id);
+
+    delete
+      .delete_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    insert_activity(&conn, creator.id, &delete, true)?;
+
+    send_activity(&delete, creator, vec![to])?;
+    Ok(())
+  }
+
+  fn send_undo_delete(&self, creator: &User_, conn: &PgConnection) -> Result<(), Error> {
+    let note = self.to_apub(conn)?;
+    let id = format!("{}/delete/{}", self.ap_id, uuid::Uuid::new_v4());
+    let recipient = User_::read(&conn, self.recipient_id)?;
+
+    let mut delete = Delete::new();
+    delete
+      .object_props
+      .set_context_xsd_any_uri(context())?
+      .set_id(id)?;
+    let to = format!("{}/inbox", recipient.actor_id);
+
+    delete
+      .delete_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(note)?;
+
+    // TODO
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/delete/{}", self.ap_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::default();
+
+    undo
+      .object_props
+      .set_context_xsd_any_uri(context())?
+      .set_id(undo_id)?;
+
+    undo
+      .undo_props
+      .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
+      .set_object_base_box(delete)?;
+
+    insert_activity(&conn, creator.id, &undo, true)?;
+
+    send_activity(&undo, creator, vec![to])?;
+    Ok(())
+  }
+
+  fn send_remove(&self, _mod_: &User_, _conn: &PgConnection) -> Result<(), Error> {
+    unimplemented!()
+  }
+
+  fn send_undo_remove(&self, _mod_: &User_, _conn: &PgConnection) -> Result<(), Error> {
+    unimplemented!()
+  }
+}

server/src/apub/user.rs

@@ -1,74 +1,219 @@
-use crate::apub::make_apub_endpoint;
-use crate::db::establish_unpooled_connection;
-use crate::db::user::User_;
-use crate::to_datetime_utc;
-use activitypub::{actor::Person, context};
-use actix_web::body::Body;
-use actix_web::web::Path;
-use actix_web::HttpResponse;
+use crate::{
+  apub::{
+    activities::send_activity,
+    create_apub_response,
+    extensions::signatures::PublicKey,
+    ActorType,
+    FromApub,
+    PersonExt,
+    ToApub,
+  },
+  convert_datetime,
+  db::{
+    activity::insert_activity,
+    user::{UserForm, User_},
+  },
+  naive_now,
+  routes::DbPoolParam,
+};
+use activitystreams::{
+  actor::{properties::ApActorProperties, Person},
+  context,
+  endpoint::EndpointProperties,
+  object::{properties::ObjectProperties, AnyImage, Image},
+  primitives::XsdAnyUri,
+};
+use activitystreams_ext::Ext2;
+use activitystreams_new::{
+  activity::{Follow, Undo},
+  object::Tombstone,
+  prelude::*,
+};
+use actix_web::{body::Body, web::Path, HttpResponse, Result};
+use diesel::PgConnection;
+use failure::Error;
 use serde::Deserialize;
 
-impl User_ {
-  pub fn as_person(&self) -> Person {
-    let base_url = make_apub_endpoint("u", &self.name);
-    let mut person = Person::default();
-    person.object_props.set_context_object(context()).ok();
-    person.object_props.set_id_string(base_url.to_string()).ok();
-    person
-      .object_props
-      .set_name_string(self.name.to_owned())
-      .ok();
-    person
-      .object_props
-      .set_published_utctime(to_datetime_utc(self.published))
-      .ok();
-    if let Some(updated) = self.updated {
-      person
-        .object_props
-        .set_updated_utctime(to_datetime_utc(updated))
-        .ok();
-    }
-
-    person
-      .ap_actor_props
-      .set_inbox_string(format!("{}/inbox", &base_url))
-      .ok();
-    person
-      .ap_actor_props
-      .set_outbox_string(format!("{}/outbox", &base_url))
-      .ok();
-    person
-      .ap_actor_props
-      .set_following_string(format!("{}/following", &base_url))
-      .ok();
-    person
-      .ap_actor_props
-      .set_liked_string(format!("{}/liked", &base_url))
-      .ok();
-    if let Some(i) = &self.preferred_username {
-      person
-        .ap_actor_props
-        .set_preferred_username_string(i.to_string())
-        .ok();
-    }
-
-    person
-  }
-}
-
 #[derive(Deserialize)]
 pub struct UserQuery {
   user_name: String,
 }
 
-pub async fn get_apub_user(info: Path<UserQuery>) -> HttpResponse<Body> {
-  let connection = establish_unpooled_connection();
+impl ToApub for User_ {
+  type Response = PersonExt;
 
-  if let Ok(user) = User_::find_by_email_or_username(&connection, &info.user_name) {
-    HttpResponse::Ok()
-      .content_type("application/activity+json")
-      .body(serde_json::to_string(&user.as_person()).unwrap())
-  } else {
-    HttpResponse::NotFound().finish()
+  // Turn a Lemmy Community into an ActivityPub group that can be sent out over the network.
+  fn to_apub(&self, _conn: &PgConnection) -> Result<PersonExt, Error> {
+    // TODO go through all these to_string and to_owned()
+    let mut person = Person::default();
+    let oprops: &mut ObjectProperties = person.as_mut();
+    oprops
+      .set_context_xsd_any_uri(context())?
+      .set_id(self.actor_id.to_string())?
+      .set_name_xsd_string(self.name.to_owned())?
+      .set_published(convert_datetime(self.published))?;
+
+    if let Some(u) = self.updated {
+      oprops.set_updated(convert_datetime(u))?;
+    }
+
+    if let Some(i) = &self.preferred_username {
+      oprops.set_name_xsd_string(i.to_owned())?;
+    }
+
+    if let Some(avatar_url) = &self.avatar {
+      let mut image = Image::new();
+      image
+        .object_props
+        .set_url_xsd_any_uri(avatar_url.to_owned())?;
+      let any_image = AnyImage::from_concrete(image)?;
+      oprops.set_icon_any_image(any_image)?;
+    }
+
+    let mut endpoint_props = EndpointProperties::default();
+
+    endpoint_props.set_shared_inbox(self.get_shared_inbox_url())?;
+
+    let mut actor_props = ApActorProperties::default();
+
+    actor_props
+      .set_inbox(self.get_inbox_url())?
+      .set_outbox(self.get_outbox_url())?
+      .set_endpoints(endpoint_props)?
+      .set_followers(self.get_followers_url())?
+      .set_following(self.get_following_url())?
+      .set_liked(self.get_liked_url())?;
+
+    Ok(Ext2::new(person, actor_props, self.get_public_key_ext()))
+  }
+  fn to_tombstone(&self) -> Result<Tombstone, Error> {
+    unimplemented!()
   }
 }
+
+impl ActorType for User_ {
+  fn actor_id(&self) -> String {
+    self.actor_id.to_owned()
+  }
+
+  fn public_key(&self) -> String {
+    self.public_key.to_owned().unwrap()
+  }
+
+  fn private_key(&self) -> String {
+    self.private_key.to_owned().unwrap()
+  }
+
+  /// As a given local user, send out a follow request to a remote community.
+  fn send_follow(&self, follow_actor_id: &str, conn: &PgConnection) -> Result<(), Error> {
+    let id = format!("{}/follow/{}", self.actor_id, uuid::Uuid::new_v4());
+    let mut follow = Follow::new(self.actor_id.to_owned(), follow_actor_id);
+    follow.set_context(context()).set_id(id.parse()?);
+    let to = format!("{}/inbox", follow_actor_id);
+
+    insert_activity(&conn, self.id, &follow, true)?;
+
+    send_activity(&follow, self, vec![to])?;
+    Ok(())
+  }
+
+  fn send_unfollow(&self, follow_actor_id: &str, conn: &PgConnection) -> Result<(), Error> {
+    let id = format!("{}/follow/{}", self.actor_id, uuid::Uuid::new_v4());
+    let mut follow = Follow::new(self.actor_id.to_owned(), follow_actor_id);
+    follow.set_context(context()).set_id(id.parse()?);
+
+    let to = format!("{}/inbox", follow_actor_id);
+
+    // TODO
+    // Undo that fake activity
+    let undo_id = format!("{}/undo/follow/{}", self.actor_id, uuid::Uuid::new_v4());
+    let mut undo = Undo::new(self.actor_id.parse::<XsdAnyUri>()?, follow.into_any_base()?);
+    undo.set_context(context()).set_id(undo_id.parse()?);
+
+    insert_activity(&conn, self.id, &undo, true)?;
+
+    send_activity(&undo, self, vec![to])?;
+    Ok(())
+  }
+
+  fn send_delete(&self, _creator: &User_, _conn: &PgConnection) -> Result<(), Error> {
+    unimplemented!()
+  }
+
+  fn send_undo_delete(&self, _creator: &User_, _conn: &PgConnection) -> Result<(), Error> {
+    unimplemented!()
+  }
+
+  fn send_remove(&self, _creator: &User_, _conn: &PgConnection) -> Result<(), Error> {
+    unimplemented!()
+  }
+
+  fn send_undo_remove(&self, _creator: &User_, _conn: &PgConnection) -> Result<(), Error> {
+    unimplemented!()
+  }
+
+  fn send_accept_follow(&self, _follow: &Follow, _conn: &PgConnection) -> Result<(), Error> {
+    unimplemented!()
+  }
+
+  fn get_follower_inboxes(&self, _conn: &PgConnection) -> Result<Vec<String>, Error> {
+    unimplemented!()
+  }
+}
+
+impl FromApub for UserForm {
+  type ApubType = PersonExt;
+  /// Parse an ActivityPub person received from another instance into a Lemmy user.
+  fn from_apub(person: &PersonExt, _conn: &PgConnection) -> Result<Self, Error> {
+    let oprops = &person.inner.object_props;
+    let aprops = &person.ext_one;
+    let public_key: &PublicKey = &person.ext_two.public_key;
+
+    let avatar = match oprops.get_icon_any_image() {
+      Some(any_image) => any_image
+        .to_owned()
+        .into_concrete::<Image>()?
+        .object_props
+        .get_url_xsd_any_uri()
+        .map(|u| u.to_string()),
+      None => None,
+    };
+
+    Ok(UserForm {
+      name: oprops.get_name_xsd_string().unwrap().to_string(),
+      preferred_username: aprops.get_preferred_username().map(|u| u.to_string()),
+      password_encrypted: "".to_string(),
+      admin: false,
+      banned: false,
+      email: None,
+      avatar,
+      updated: oprops
+        .get_updated()
+        .map(|u| u.as_ref().to_owned().naive_local()),
+      show_nsfw: false,
+      theme: "".to_string(),
+      default_sort_type: 0,
+      default_listing_type: 0,
+      lang: "".to_string(),
+      show_avatars: false,
+      send_notifications_to_email: false,
+      matrix_user_id: None,
+      actor_id: oprops.get_id().unwrap().to_string(),
+      bio: oprops.get_summary_xsd_string().map(|s| s.to_string()),
+      local: false,
+      private_key: None,
+      public_key: Some(public_key.to_owned().public_key_pem),
+      last_refreshed_at: Some(naive_now()),
+    })
+  }
+}
+
+/// Return the user json over HTTP.
+pub async fn get_apub_user_http(
+  info: Path<UserQuery>,
+  db: DbPoolParam,
+) -> Result<HttpResponse<Body>, Error> {
+  let user = User_::find_by_email_or_username(&&db.get()?, &info.user_name)?;
+  let u = user.to_apub(&db.get().unwrap())?;
+  Ok(create_apub_response(&u))
+}

server/src/apub/user_inbox.rs

@@ -0,0 +1,312 @@
+use crate::{
+  api::user::PrivateMessageResponse,
+  apub::{
+    extensions::signatures::verify,
+    fetcher::{get_or_fetch_and_upsert_remote_community, get_or_fetch_and_upsert_remote_user},
+    FromApub,
+  },
+  db::{
+    activity::insert_activity,
+    community::{CommunityFollower, CommunityFollowerForm},
+    private_message::{PrivateMessage, PrivateMessageForm},
+    private_message_view::PrivateMessageView,
+    user::User_,
+    Crud,
+    Followable,
+  },
+  naive_now,
+  routes::{ChatServerParam, DbPoolParam},
+  websocket::{server::SendUserRoomMessage, UserOperation},
+};
+use activitystreams::{
+  activity::{Accept, Create, Delete, Undo, Update},
+  object::Note,
+};
+use actix_web::{web, HttpRequest, HttpResponse, Result};
+use diesel::PgConnection;
+use failure::{Error, _core::fmt::Debug};
+use log::debug;
+use serde::Deserialize;
+
+#[serde(untagged)]
+#[derive(Deserialize, Debug)]
+pub enum UserAcceptedObjects {
+  Accept(Box<Accept>),
+  Create(Box<Create>),
+  Update(Box<Update>),
+  Delete(Box<Delete>),
+  Undo(Box<Undo>),
+}
+
+/// Handler for all incoming activities to user inboxes.
+pub async fn user_inbox(
+  request: HttpRequest,
+  input: web::Json<UserAcceptedObjects>,
+  path: web::Path<String>,
+  db: DbPoolParam,
+  chat_server: ChatServerParam,
+) -> Result<HttpResponse, Error> {
+  // TODO: would be nice if we could do the signature check here, but we cant access the actor property
+  let input = input.into_inner();
+  let conn = &db.get().unwrap();
+  let username = path.into_inner();
+  debug!("User {} received activity: {:?}", &username, &input);
+
+  match input {
+    UserAcceptedObjects::Accept(a) => receive_accept(&a, &request, &username, &conn),
+    UserAcceptedObjects::Create(c) => {
+      receive_create_private_message(&c, &request, &conn, chat_server)
+    }
+    UserAcceptedObjects::Update(u) => {
+      receive_update_private_message(&u, &request, &conn, chat_server)
+    }
+    UserAcceptedObjects::Delete(d) => {
+      receive_delete_private_message(&d, &request, &conn, chat_server)
+    }
+    UserAcceptedObjects::Undo(u) => {
+      receive_undo_delete_private_message(&u, &request, &conn, chat_server)
+    }
+  }
+}
+
+/// Handle accepted follows.
+fn receive_accept(
+  accept: &Accept,
+  request: &HttpRequest,
+  username: &str,
+  conn: &PgConnection,
+) -> Result<HttpResponse, Error> {
+  let community_uri = accept
+    .accept_props
+    .get_actor_xsd_any_uri()
+    .unwrap()
+    .to_string();
+
+  let community = get_or_fetch_and_upsert_remote_community(&community_uri, conn)?;
+  verify(request, &community)?;
+
+  let user = User_::read_from_name(&conn, username)?;
+
+  insert_activity(&conn, community.creator_id, &accept, false)?;
+
+  // Now you need to add this to the community follower
+  let community_follower_form = CommunityFollowerForm {
+    community_id: community.id,
+    user_id: user.id,
+  };
+
+  // This will fail if they're already a follower
+  CommunityFollower::follow(&conn, &community_follower_form)?;
+
+  // TODO: make sure that we actually requested a follow
+  Ok(HttpResponse::Ok().finish())
+}
+
+fn receive_create_private_message(
+  create: &Create,
+  request: &HttpRequest,
+  conn: &PgConnection,
+  chat_server: ChatServerParam,
+) -> Result<HttpResponse, Error> {
+  let note = create
+    .create_props
+    .get_object_base_box()
+    .to_owned()
+    .unwrap()
+    .to_owned()
+    .into_concrete::<Note>()?;
+
+  let user_uri = create
+    .create_props
+    .get_actor_xsd_any_uri()
+    .unwrap()
+    .to_string();
+
+  let user = get_or_fetch_and_upsert_remote_user(&user_uri, &conn)?;
+  verify(request, &user)?;
+
+  insert_activity(&conn, user.id, &create, false)?;
+
+  let private_message = PrivateMessageForm::from_apub(&note, &conn)?;
+  let inserted_private_message = PrivateMessage::create(&conn, &private_message)?;
+
+  let message = PrivateMessageView::read(&conn, inserted_private_message.id)?;
+
+  let res = PrivateMessageResponse {
+    message: message.to_owned(),
+  };
+
+  chat_server.do_send(SendUserRoomMessage {
+    op: UserOperation::CreatePrivateMessage,
+    response: res,
+    recipient_id: message.recipient_id,
+    my_id: None,
+  });
+
+  Ok(HttpResponse::Ok().finish())
+}
+
+fn receive_update_private_message(
+  update: &Update,
+  request: &HttpRequest,
+  conn: &PgConnection,
+  chat_server: ChatServerParam,
+) -> Result<HttpResponse, Error> {
+  let note = update
+    .update_props
+    .get_object_base_box()
+    .to_owned()
+    .unwrap()
+    .to_owned()
+    .into_concrete::<Note>()?;
+
+  let user_uri = update
+    .update_props
+    .get_actor_xsd_any_uri()
+    .unwrap()
+    .to_string();
+
+  let user = get_or_fetch_and_upsert_remote_user(&user_uri, &conn)?;
+  verify(request, &user)?;
+
+  insert_activity(&conn, user.id, &update, false)?;
+
+  let private_message = PrivateMessageForm::from_apub(&note, &conn)?;
+  let private_message_id = PrivateMessage::read_from_apub_id(&conn, &private_message.ap_id)?.id;
+  PrivateMessage::update(conn, private_message_id, &private_message)?;
+
+  let message = PrivateMessageView::read(&conn, private_message_id)?;
+
+  let res = PrivateMessageResponse {
+    message: message.to_owned(),
+  };
+
+  chat_server.do_send(SendUserRoomMessage {
+    op: UserOperation::EditPrivateMessage,
+    response: res,
+    recipient_id: message.recipient_id,
+    my_id: None,
+  });
+
+  Ok(HttpResponse::Ok().finish())
+}
+
+fn receive_delete_private_message(
+  delete: &Delete,
+  request: &HttpRequest,
+  conn: &PgConnection,
+  chat_server: ChatServerParam,
+) -> Result<HttpResponse, Error> {
+  let note = delete
+    .delete_props
+    .get_object_base_box()
+    .to_owned()
+    .unwrap()
+    .to_owned()
+    .into_concrete::<Note>()?;
+
+  let user_uri = delete
+    .delete_props
+    .get_actor_xsd_any_uri()
+    .unwrap()
+    .to_string();
+
+  let user = get_or_fetch_and_upsert_remote_user(&user_uri, &conn)?;
+  verify(request, &user)?;
+
+  insert_activity(&conn, user.id, &delete, false)?;
+
+  let private_message = PrivateMessageForm::from_apub(&note, &conn)?;
+  let private_message_id = PrivateMessage::read_from_apub_id(&conn, &private_message.ap_id)?.id;
+  let private_message_form = PrivateMessageForm {
+    content: private_message.content,
+    recipient_id: private_message.recipient_id,
+    creator_id: private_message.creator_id,
+    deleted: Some(true),
+    read: None,
+    ap_id: private_message.ap_id,
+    local: private_message.local,
+    published: None,
+    updated: Some(naive_now()),
+  };
+  PrivateMessage::update(conn, private_message_id, &private_message_form)?;
+
+  let message = PrivateMessageView::read(&conn, private_message_id)?;
+
+  let res = PrivateMessageResponse {
+    message: message.to_owned(),
+  };
+
+  chat_server.do_send(SendUserRoomMessage {
+    op: UserOperation::EditPrivateMessage,
+    response: res,
+    recipient_id: message.recipient_id,
+    my_id: None,
+  });
+
+  Ok(HttpResponse::Ok().finish())
+}
+
+fn receive_undo_delete_private_message(
+  undo: &Undo,
+  request: &HttpRequest,
+  conn: &PgConnection,
+  chat_server: ChatServerParam,
+) -> Result<HttpResponse, Error> {
+  let delete = undo
+    .undo_props
+    .get_object_base_box()
+    .to_owned()
+    .unwrap()
+    .to_owned()
+    .into_concrete::<Delete>()?;
+
+  let note = delete
+    .delete_props
+    .get_object_base_box()
+    .to_owned()
+    .unwrap()
+    .to_owned()
+    .into_concrete::<Note>()?;
+
+  let user_uri = delete
+    .delete_props
+    .get_actor_xsd_any_uri()
+    .unwrap()
+    .to_string();
+
+  let user = get_or_fetch_and_upsert_remote_user(&user_uri, &conn)?;
+  verify(request, &user)?;
+
+  insert_activity(&conn, user.id, &delete, false)?;
+
+  let private_message = PrivateMessageForm::from_apub(&note, &conn)?;
+  let private_message_id = PrivateMessage::read_from_apub_id(&conn, &private_message.ap_id)?.id;
+  let private_message_form = PrivateMessageForm {
+    content: private_message.content,
+    recipient_id: private_message.recipient_id,
+    creator_id: private_message.creator_id,
+    deleted: Some(false),
+    read: None,
+    ap_id: private_message.ap_id,
+    local: private_message.local,
+    published: None,
+    updated: Some(naive_now()),
+  };
+  PrivateMessage::update(conn, private_message_id, &private_message_form)?;
+
+  let message = PrivateMessageView::read(&conn, private_message_id)?;
+
+  let res = PrivateMessageResponse {
+    message: message.to_owned(),
+  };
+
+  chat_server.do_send(SendUserRoomMessage {
+    op: UserOperation::EditPrivateMessage,
+    response: res,
+    recipient_id: message.recipient_id,
+    my_id: None,
+  });
+
+  Ok(HttpResponse::Ok().finish())
+}

server/src/db/activity.rs

@@ -0,0 +1,149 @@
+use crate::{db::Crud, schema::activity};
+use diesel::{dsl::*, result::Error, *};
+use failure::_core::fmt::Debug;
+use log::debug;
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+#[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
+#[table_name = "activity"]
+pub struct Activity {
+  pub id: i32,
+  pub user_id: i32,
+  pub data: Value,
+  pub local: bool,
+  pub published: chrono::NaiveDateTime,
+  pub updated: Option<chrono::NaiveDateTime>,
+}
+
+#[derive(Insertable, AsChangeset, Clone, Serialize, Deserialize)]
+#[table_name = "activity"]
+pub struct ActivityForm {
+  pub user_id: i32,
+  pub data: Value,
+  pub local: bool,
+  pub updated: Option<chrono::NaiveDateTime>,
+}
+
+impl Crud<ActivityForm> for Activity {
+  fn read(conn: &PgConnection, activity_id: i32) -> Result<Self, Error> {
+    use crate::schema::activity::dsl::*;
+    activity.find(activity_id).first::<Self>(conn)
+  }
+
+  fn delete(conn: &PgConnection, activity_id: i32) -> Result<usize, Error> {
+    use crate::schema::activity::dsl::*;
+    diesel::delete(activity.find(activity_id)).execute(conn)
+  }
+
+  fn create(conn: &PgConnection, new_activity: &ActivityForm) -> Result<Self, Error> {
+    use crate::schema::activity::dsl::*;
+    insert_into(activity)
+      .values(new_activity)
+      .get_result::<Self>(conn)
+  }
+
+  fn update(
+    conn: &PgConnection,
+    activity_id: i32,
+    new_activity: &ActivityForm,
+  ) -> Result<Self, Error> {
+    use crate::schema::activity::dsl::*;
+    diesel::update(activity.find(activity_id))
+      .set(new_activity)
+      .get_result::<Self>(conn)
+  }
+}
+
+pub fn insert_activity<T>(
+  conn: &PgConnection,
+  user_id: i32,
+  data: &T,
+  local: bool,
+) -> Result<(), failure::Error>
+where
+  T: Serialize + Debug,
+{
+  let activity_form = ActivityForm {
+    user_id,
+    data: serde_json::to_value(&data)?,
+    local,
+    updated: None,
+  };
+  debug!("inserting activity for user {}, data {:?}", user_id, data);
+  Activity::create(&conn, &activity_form)?;
+  Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+  use super::{super::user::*, *};
+  use crate::db::{establish_unpooled_connection, Crud, ListingType, SortType};
+
+  #[test]
+  fn test_crud() {
+    let conn = establish_unpooled_connection();
+
+    let creator_form = UserForm {
+      name: "activity_creator_pm".into(),
+      preferred_username: None,
+      password_encrypted: "nope".into(),
+      email: None,
+      matrix_user_id: None,
+      avatar: None,
+      admin: false,
+      banned: false,
+      updated: None,
+      show_nsfw: false,
+      theme: "darkly".into(),
+      default_sort_type: SortType::Hot as i16,
+      default_listing_type: ListingType::Subscribed as i16,
+      lang: "browser".into(),
+      show_avatars: true,
+      send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
+    };
+
+    let inserted_creator = User_::create(&conn, &creator_form).unwrap();
+
+    let test_json: Value = serde_json::from_str(
+      r#"{
+    "street": "Article Circle Expressway 1",
+    "city": "North Pole",
+    "postcode": "99705",
+    "state": "Alaska"
+}"#,
+    )
+    .unwrap();
+    let activity_form = ActivityForm {
+      user_id: inserted_creator.id,
+      data: test_json.to_owned(),
+      local: true,
+      updated: None,
+    };
+
+    let inserted_activity = Activity::create(&conn, &activity_form).unwrap();
+
+    let expected_activity = Activity {
+      id: inserted_activity.id,
+      user_id: inserted_creator.id,
+      data: test_json,
+      local: true,
+      published: inserted_activity.published,
+      updated: None,
+    };
+
+    let read_activity = Activity::read(&conn, inserted_activity.id).unwrap();
+    let num_deleted = Activity::delete(&conn, inserted_activity.id).unwrap();
+    User_::delete(&conn, inserted_creator.id).unwrap();
+
+    assert_eq!(expected_activity, read_activity);
+    assert_eq!(expected_activity, inserted_activity);
+    assert_eq!(1, num_deleted);
+  }
+}

server/src/db/category.rs

@@ -1,6 +1,9 @@
-use super::*;
-use crate::schema::category;
-use crate::schema::category::dsl::*;
+use crate::{
+  db::Crud,
+  schema::{category, category::dsl::*},
+};
+use diesel::{dsl::*, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 #[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
 #[table_name = "category"]
@@ -50,6 +53,8 @@ impl Category {
 #[cfg(test)]
 mod tests {
   use super::*;
+  use crate::db::establish_unpooled_connection;
+
   #[test]
   fn test_crud() {
     let conn = establish_unpooled_connection();

server/src/db/code_migrations.rs

@@ -0,0 +1,173 @@
+// This is for db migrations that require code
+use super::{
+  comment::Comment,
+  community::{Community, CommunityForm},
+  post::Post,
+  private_message::PrivateMessage,
+  user::{UserForm, User_},
+};
+use crate::{
+  apub::{extensions::signatures::generate_actor_keypair, make_apub_endpoint, EndpointType},
+  db::Crud,
+  naive_now,
+};
+use diesel::*;
+use failure::Error;
+use log::info;
+
+pub fn run_advanced_migrations(conn: &PgConnection) -> Result<(), Error> {
+  user_updates_2020_04_02(conn)?;
+  community_updates_2020_04_02(conn)?;
+  post_updates_2020_04_03(conn)?;
+  comment_updates_2020_04_03(conn)?;
+  private_message_updates_2020_05_05(conn)?;
+
+  Ok(())
+}
+
+fn user_updates_2020_04_02(conn: &PgConnection) -> Result<(), Error> {
+  use crate::schema::user_::dsl::*;
+
+  info!("Running user_updates_2020_04_02");
+
+  // Update the actor_id, private_key, and public_key, last_refreshed_at
+  let incorrect_users = user_
+    .filter(actor_id.eq("changeme"))
+    .filter(local.eq(true))
+    .load::<User_>(conn)?;
+
+  for cuser in &incorrect_users {
+    let keypair = generate_actor_keypair()?;
+
+    let form = UserForm {
+      name: cuser.name.to_owned(),
+      email: cuser.email.to_owned(),
+      matrix_user_id: cuser.matrix_user_id.to_owned(),
+      avatar: cuser.avatar.to_owned(),
+      password_encrypted: cuser.password_encrypted.to_owned(),
+      preferred_username: cuser.preferred_username.to_owned(),
+      updated: None,
+      admin: cuser.admin,
+      banned: cuser.banned,
+      show_nsfw: cuser.show_nsfw,
+      theme: cuser.theme.to_owned(),
+      default_sort_type: cuser.default_sort_type,
+      default_listing_type: cuser.default_listing_type,
+      lang: cuser.lang.to_owned(),
+      show_avatars: cuser.show_avatars,
+      send_notifications_to_email: cuser.send_notifications_to_email,
+      actor_id: make_apub_endpoint(EndpointType::User, &cuser.name).to_string(),
+      bio: cuser.bio.to_owned(),
+      local: cuser.local,
+      private_key: Some(keypair.private_key),
+      public_key: Some(keypair.public_key),
+      last_refreshed_at: Some(naive_now()),
+    };
+
+    User_::update(&conn, cuser.id, &form)?;
+  }
+
+  info!("{} user rows updated.", incorrect_users.len());
+
+  Ok(())
+}
+
+fn community_updates_2020_04_02(conn: &PgConnection) -> Result<(), Error> {
+  use crate::schema::community::dsl::*;
+
+  info!("Running community_updates_2020_04_02");
+
+  // Update the actor_id, private_key, and public_key, last_refreshed_at
+  let incorrect_communities = community
+    .filter(actor_id.eq("changeme"))
+    .filter(local.eq(true))
+    .load::<Community>(conn)?;
+
+  for ccommunity in &incorrect_communities {
+    let keypair = generate_actor_keypair()?;
+
+    let form = CommunityForm {
+      name: ccommunity.name.to_owned(),
+      title: ccommunity.title.to_owned(),
+      description: ccommunity.description.to_owned(),
+      category_id: ccommunity.category_id,
+      creator_id: ccommunity.creator_id,
+      removed: None,
+      deleted: None,
+      nsfw: ccommunity.nsfw,
+      updated: None,
+      actor_id: make_apub_endpoint(EndpointType::Community, &ccommunity.name).to_string(),
+      local: ccommunity.local,
+      private_key: Some(keypair.private_key),
+      public_key: Some(keypair.public_key),
+      last_refreshed_at: Some(naive_now()),
+      published: None,
+    };
+
+    Community::update(&conn, ccommunity.id, &form)?;
+  }
+
+  info!("{} community rows updated.", incorrect_communities.len());
+
+  Ok(())
+}
+
+fn post_updates_2020_04_03(conn: &PgConnection) -> Result<(), Error> {
+  use crate::schema::post::dsl::*;
+
+  info!("Running post_updates_2020_04_03");
+
+  // Update the ap_id
+  let incorrect_posts = post
+    .filter(ap_id.eq("changeme"))
+    .filter(local.eq(true))
+    .load::<Post>(conn)?;
+
+  for cpost in &incorrect_posts {
+    Post::update_ap_id(&conn, cpost.id)?;
+  }
+
+  info!("{} post rows updated.", incorrect_posts.len());
+
+  Ok(())
+}
+
+fn comment_updates_2020_04_03(conn: &PgConnection) -> Result<(), Error> {
+  use crate::schema::comment::dsl::*;
+
+  info!("Running comment_updates_2020_04_03");
+
+  // Update the ap_id
+  let incorrect_comments = comment
+    .filter(ap_id.eq("changeme"))
+    .filter(local.eq(true))
+    .load::<Comment>(conn)?;
+
+  for ccomment in &incorrect_comments {
+    Comment::update_ap_id(&conn, ccomment.id)?;
+  }
+
+  info!("{} comment rows updated.", incorrect_comments.len());
+
+  Ok(())
+}
+
+fn private_message_updates_2020_05_05(conn: &PgConnection) -> Result<(), Error> {
+  use crate::schema::private_message::dsl::*;
+
+  info!("Running private_message_updates_2020_05_05");
+
+  // Update the ap_id
+  let incorrect_pms = private_message
+    .filter(ap_id.eq("changeme"))
+    .filter(local.eq(true))
+    .load::<PrivateMessage>(conn)?;
+
+  for cpm in &incorrect_pms {
+    PrivateMessage::update_ap_id(&conn, cpm.id)?;
+  }
+
+  info!("{} private message rows updated.", incorrect_pms.len());
+
+  Ok(())
+}

server/src/db/comment.rs

@@ -1,6 +1,9 @@
-use super::post::Post;
-use super::*;
-use crate::schema::{comment, comment_like, comment_saved};
+use super::{post::Post, *};
+use crate::{
+  apub::{make_apub_endpoint, EndpointType},
+  naive_now,
+  schema::{comment, comment_like, comment_saved},
+};
 
 // WITH RECURSIVE MyTree AS (
 //     SELECT * FROM comment WHERE parent_id IS NULL
@@ -19,10 +22,12 @@ pub struct Comment {
   pub parent_id: Option<i32>,
   pub content: String,
   pub removed: bool,
-  pub read: bool,
+  pub read: bool, // Whether the recipient has read the comment or not
   pub published: chrono::NaiveDateTime,
   pub updated: Option<chrono::NaiveDateTime>,
   pub deleted: bool,
+  pub ap_id: String,
+  pub local: bool,
 }
 
 #[derive(Insertable, AsChangeset, Clone)]
@@ -34,8 +39,11 @@ pub struct CommentForm {
   pub content: String,
   pub removed: Option<bool>,
   pub read: Option<bool>,
+  pub published: Option<chrono::NaiveDateTime>,
   pub updated: Option<chrono::NaiveDateTime>,
   pub deleted: Option<bool>,
+  pub ap_id: String,
+  pub local: bool,
 }
 
 impl Crud<CommentForm> for Comment {
@@ -68,6 +76,42 @@ impl Crud<CommentForm> for Comment {
   }
 }
 
+impl Comment {
+  pub fn update_ap_id(conn: &PgConnection, comment_id: i32) -> Result<Self, Error> {
+    use crate::schema::comment::dsl::*;
+
+    let apid = make_apub_endpoint(EndpointType::Comment, &comment_id.to_string()).to_string();
+    diesel::update(comment.find(comment_id))
+      .set(ap_id.eq(apid))
+      .get_result::<Self>(conn)
+  }
+
+  pub fn read_from_apub_id(conn: &PgConnection, object_id: &str) -> Result<Self, Error> {
+    use crate::schema::comment::dsl::*;
+    comment.filter(ap_id.eq(object_id)).first::<Self>(conn)
+  }
+
+  pub fn mark_as_read(conn: &PgConnection, comment_id: i32) -> Result<Self, Error> {
+    use crate::schema::comment::dsl::*;
+
+    diesel::update(comment.find(comment_id))
+      .set(read.eq(true))
+      .get_result::<Self>(conn)
+  }
+
+  pub fn permadelete(conn: &PgConnection, comment_id: i32) -> Result<Self, Error> {
+    use crate::schema::comment::dsl::*;
+
+    diesel::update(comment.find(comment_id))
+      .set((
+        content.eq("*Permananently Deleted*"),
+        deleted.eq(true),
+        updated.eq(naive_now()),
+      ))
+      .get_result::<Self>(conn)
+  }
+}
+
 #[derive(Identifiable, Queryable, Associations, PartialEq, Debug, Clone)]
 #[belongs_to(Comment)]
 #[table_name = "comment_like"]
@@ -160,17 +204,16 @@ impl Saveable<CommentSavedForm> for CommentSaved {
 
 #[cfg(test)]
 mod tests {
-  use super::super::community::*;
-  use super::super::post::*;
-  use super::super::user::*;
-  use super::*;
+  use super::{
+    super::{community::*, post::*, user::*},
+    *,
+  };
   #[test]
   fn test_crud() {
     let conn = establish_unpooled_connection();
 
     let new_user = UserForm {
       name: "terry".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -186,6 +229,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_user = User_::create(&conn, &new_user).unwrap();
@@ -200,6 +249,12 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
+      actor_id: "changeme".into(),
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
+      published: None,
     };
 
     let inserted_community = Community::create(&conn, &new_community).unwrap();
@@ -220,6 +275,9 @@ mod tests {
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
+      ap_id: "changeme".into(),
+      local: true,
+      published: None,
     };
 
     let inserted_post = Post::create(&conn, &new_post).unwrap();
@@ -232,7 +290,10 @@ mod tests {
       deleted: None,
       read: None,
       parent_id: None,
+      published: None,
       updated: None,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
@@ -248,6 +309,8 @@ mod tests {
       parent_id: None,
       published: inserted_comment.published,
       updated: None,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     let child_comment_form = CommentForm {
@@ -258,7 +321,10 @@ mod tests {
       removed: None,
       deleted: None,
       read: None,
+      published: None,
       updated: None,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     let inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();

server/src/db/comment_view.rs

@@ -1,5 +1,6 @@
-use super::*;
-use diesel::pg::Pg;
+use crate::db::{fuzzy_search, limit_and_offset, ListingType, MaybeOptional, SortType};
+use diesel::{dsl::*, pg::Pg, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 // The faked schema since diesel doesn't do views
 table! {
@@ -14,10 +15,16 @@ table! {
     published -> Timestamp,
     updated -> Nullable<Timestamp>,
     deleted -> Bool,
+    ap_id -> Text,
+    local -> Bool,
     community_id -> Int4,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
     banned -> Bool,
     banned_from_community -> Bool,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     creator_name -> Varchar,
     creator_avatar -> Nullable<Text>,
     score -> BigInt,
@@ -43,10 +50,16 @@ table! {
     published -> Timestamp,
     updated -> Nullable<Timestamp>,
     deleted -> Bool,
+    ap_id -> Text,
+    local -> Bool,
     community_id -> Int4,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
     banned -> Bool,
     banned_from_community -> Bool,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     creator_name -> Varchar,
     creator_avatar -> Nullable<Text>,
     score -> BigInt,
@@ -75,10 +88,16 @@ pub struct CommentView {
   pub published: chrono::NaiveDateTime,
   pub updated: Option<chrono::NaiveDateTime>,
   pub deleted: bool,
+  pub ap_id: String,
+  pub local: bool,
   pub community_id: i32,
+  pub community_actor_id: String,
+  pub community_local: bool,
   pub community_name: String,
   pub banned: bool,
   pub banned_from_community: bool,
+  pub creator_actor_id: String,
+  pub creator_local: bool,
   pub creator_name: String,
   pub creator_avatar: Option<String>,
   pub score: i64,
@@ -282,10 +301,16 @@ table! {
     published -> Timestamp,
     updated -> Nullable<Timestamp>,
     deleted -> Bool,
+    ap_id -> Text,
+    local -> Bool,
     community_id -> Int4,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
     banned -> Bool,
     banned_from_community -> Bool,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     creator_name -> Varchar,
     creator_avatar -> Nullable<Text>,
     score -> BigInt,
@@ -315,10 +340,16 @@ pub struct ReplyView {
   pub published: chrono::NaiveDateTime,
   pub updated: Option<chrono::NaiveDateTime>,
   pub deleted: bool,
+  pub ap_id: String,
+  pub local: bool,
   pub community_id: i32,
+  pub community_actor_id: String,
+  pub community_local: bool,
   pub community_name: String,
   pub banned: bool,
   pub banned_from_community: bool,
+  pub creator_actor_id: String,
+  pub creator_local: bool,
   pub creator_name: String,
   pub creator_avatar: Option<String>,
   pub score: i64,
@@ -423,18 +454,18 @@ impl<'a> ReplyQueryBuilder<'a> {
 
 #[cfg(test)]
 mod tests {
-  use super::super::comment::*;
-  use super::super::community::*;
-  use super::super::post::*;
-  use super::super::user::*;
-  use super::*;
+  use super::{
+    super::{comment::*, community::*, post::*, user::*},
+    *,
+  };
+  use crate::db::{establish_unpooled_connection, Crud, Likeable};
+
   #[test]
   fn test_crud() {
     let conn = establish_unpooled_connection();
 
     let new_user = UserForm {
       name: "timmy".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -450,6 +481,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_user = User_::create(&conn, &new_user).unwrap();
@@ -464,6 +501,12 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
+      actor_id: "changeme".into(),
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
+      published: None,
     };
 
     let inserted_community = Community::create(&conn, &new_community).unwrap();
@@ -484,6 +527,9 @@ mod tests {
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
+      ap_id: "changeme".into(),
+      local: true,
+      published: None,
     };
 
     let inserted_post = Post::create(&conn, &new_post).unwrap();
@@ -496,7 +542,10 @@ mod tests {
       removed: None,
       deleted: None,
       read: None,
+      published: None,
       updated: None,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
@@ -535,6 +584,12 @@ mod tests {
       my_vote: None,
       subscribed: None,
       saved: None,
+      ap_id: "changeme".to_string(),
+      local: true,
+      community_actor_id: inserted_community.actor_id.to_owned(),
+      community_local: true,
+      creator_actor_id: inserted_user.actor_id.to_owned(),
+      creator_local: true,
     };
 
     let expected_comment_view_with_user = CommentView {
@@ -562,6 +617,12 @@ mod tests {
       my_vote: Some(1),
       subscribed: None,
       saved: None,
+      ap_id: "changeme".to_string(),
+      local: true,
+      community_actor_id: inserted_community.actor_id.to_owned(),
+      community_local: true,
+      creator_actor_id: inserted_user.actor_id.to_owned(),
+      creator_local: true,
     };
 
     let mut read_comment_views_no_user = CommentQueryBuilder::create(&conn)

server/src/db/community.rs

@@ -1,5 +1,9 @@
-use super::*;
-use crate::schema::{community, community_follower, community_moderator, community_user_ban};
+use crate::{
+  db::{Bannable, Crud, Followable, Joinable},
+  schema::{community, community_follower, community_moderator, community_user_ban},
+};
+use diesel::{dsl::*, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 #[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
 #[table_name = "community"]
@@ -15,9 +19,15 @@ pub struct Community {
   pub updated: Option<chrono::NaiveDateTime>,
   pub deleted: bool,
   pub nsfw: bool,
+  pub actor_id: String,
+  pub local: bool,
+  pub private_key: Option<String>,
+  pub public_key: Option<String>,
+  pub last_refreshed_at: chrono::NaiveDateTime,
 }
 
-#[derive(Insertable, AsChangeset, Clone, Serialize, Deserialize)]
+// TODO add better delete, remove, lock actions here.
+#[derive(Insertable, AsChangeset, Clone, Serialize, Deserialize, Debug)]
 #[table_name = "community"]
 pub struct CommunityForm {
   pub name: String,
@@ -26,9 +36,15 @@ pub struct CommunityForm {
   pub category_id: i32,
   pub creator_id: i32,
   pub removed: Option<bool>,
+  pub published: Option<chrono::NaiveDateTime>,
   pub updated: Option<chrono::NaiveDateTime>,
   pub deleted: Option<bool>,
   pub nsfw: bool,
+  pub actor_id: String,
+  pub local: bool,
+  pub private_key: Option<String>,
+  pub public_key: Option<String>,
+  pub last_refreshed_at: Option<chrono::NaiveDateTime>,
 }
 
 impl Crud<CommunityForm> for Community {
@@ -62,15 +78,23 @@ impl Crud<CommunityForm> for Community {
 }
 
 impl Community {
-  pub fn read_from_name(conn: &PgConnection, community_name: String) -> Result<Self, Error> {
+  pub fn read_from_name(conn: &PgConnection, community_name: &str) -> Result<Self, Error> {
     use crate::schema::community::dsl::*;
     community
       .filter(name.eq(community_name))
       .first::<Self>(conn)
   }
 
-  pub fn get_url(&self) -> String {
-    format!("https://{}/c/{}", Settings::get().hostname, self.name)
+  pub fn read_from_actor_id(conn: &PgConnection, community_id: &str) -> Result<Self, Error> {
+    use crate::schema::community::dsl::*;
+    community
+      .filter(actor_id.eq(community_id))
+      .first::<Self>(conn)
+  }
+
+  pub fn list_local(conn: &PgConnection) -> Result<Vec<Self>, Error> {
+    use crate::schema::community::dsl::*;
+    community.filter(local.eq(true)).load::<Community>(conn)
   }
 }
 
@@ -192,7 +216,7 @@ impl Followable<CommunityFollowerForm> for CommunityFollower {
       .values(community_follower_form)
       .get_result::<Self>(conn)
   }
-  fn ignore(
+  fn unfollow(
     conn: &PgConnection,
     community_follower_form: &CommunityFollowerForm,
   ) -> Result<usize, Error> {
@@ -208,15 +232,15 @@ impl Followable<CommunityFollowerForm> for CommunityFollower {
 
 #[cfg(test)]
 mod tests {
-  use super::super::user::*;
-  use super::*;
+  use super::{super::user::*, *};
+  use crate::db::{establish_unpooled_connection, ListingType, SortType};
+
   #[test]
   fn test_crud() {
     let conn = establish_unpooled_connection();
 
     let new_user = UserForm {
       name: "bobbee".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -232,6 +256,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_user = User_::create(&conn, &new_user).unwrap();
@@ -246,6 +276,12 @@ mod tests {
       removed: None,
       deleted: None,
       updated: None,
+      actor_id: "changeme".into(),
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
+      published: None,
     };
 
     let inserted_community = Community::create(&conn, &new_community).unwrap();
@@ -262,6 +298,11 @@ mod tests {
       deleted: false,
       published: inserted_community.published,
       updated: None,
+      actor_id: "changeme".into(),
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: inserted_community.published,
     };
 
     let community_follower_form = CommunityFollowerForm {
@@ -311,7 +352,7 @@ mod tests {
     let read_community = Community::read(&conn, inserted_community.id).unwrap();
     let updated_community =
       Community::update(&conn, inserted_community.id, &new_community).unwrap();
-    let ignored_community = CommunityFollower::ignore(&conn, &community_follower_form).unwrap();
+    let ignored_community = CommunityFollower::unfollow(&conn, &community_follower_form).unwrap();
     let left_community = CommunityModerator::leave(&conn, &community_user_form).unwrap();
     let unban = CommunityUserBan::unban(&conn, &community_user_ban_form).unwrap();
     let num_deleted = Community::delete(&conn, inserted_community.id).unwrap();

server/src/db/community_view.rs

@@ -1,6 +1,7 @@
 use super::community_view::community_mview::BoxedQuery;
-use super::*;
-use diesel::pg::Pg;
+use crate::db::{fuzzy_search, limit_and_offset, MaybeOptional, SortType};
+use diesel::{pg::Pg, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 table! {
   community_view (id) {
@@ -15,6 +16,11 @@ table! {
     updated -> Nullable<Timestamp>,
     deleted -> Bool,
     nsfw -> Bool,
+    actor_id -> Text,
+    local -> Bool,
+    last_refreshed_at -> Timestamp,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     creator_name -> Varchar,
     creator_avatar -> Nullable<Text>,
     category_name -> Varchar,
@@ -40,6 +46,11 @@ table! {
     updated -> Nullable<Timestamp>,
     deleted -> Bool,
     nsfw -> Bool,
+    actor_id -> Text,
+    local -> Bool,
+    last_refreshed_at -> Timestamp,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     creator_name -> Varchar,
     creator_avatar -> Nullable<Text>,
     category_name -> Varchar,
@@ -58,8 +69,12 @@ table! {
     community_id -> Int4,
     user_id -> Int4,
     published -> Timestamp,
+    user_actor_id -> Text,
+    user_local -> Bool,
     user_name -> Varchar,
     avatar -> Nullable<Text>,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
   }
 }
@@ -70,8 +85,12 @@ table! {
     community_id -> Int4,
     user_id -> Int4,
     published -> Timestamp,
+    user_actor_id -> Text,
+    user_local -> Bool,
     user_name -> Varchar,
     avatar -> Nullable<Text>,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
   }
 }
@@ -82,8 +101,12 @@ table! {
     community_id -> Int4,
     user_id -> Int4,
     published -> Timestamp,
+    user_actor_id -> Text,
+    user_local -> Bool,
     user_name -> Varchar,
     avatar -> Nullable<Text>,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
   }
 }
@@ -104,6 +127,11 @@ pub struct CommunityView {
   pub updated: Option<chrono::NaiveDateTime>,
   pub deleted: bool,
   pub nsfw: bool,
+  pub actor_id: String,
+  pub local: bool,
+  pub last_refreshed_at: chrono::NaiveDateTime,
+  pub creator_actor_id: String,
+  pub creator_local: bool,
   pub creator_name: String,
   pub creator_avatar: Option<String>,
   pub category_name: String,
@@ -257,8 +285,12 @@ pub struct CommunityModeratorView {
   pub community_id: i32,
   pub user_id: i32,
   pub published: chrono::NaiveDateTime,
+  pub user_actor_id: String,
+  pub user_local: bool,
   pub user_name: String,
   pub avatar: Option<String>,
+  pub community_actor_id: String,
+  pub community_local: bool,
   pub community_name: String,
 }
 
@@ -287,8 +319,12 @@ pub struct CommunityFollowerView {
   pub community_id: i32,
   pub user_id: i32,
   pub published: chrono::NaiveDateTime,
+  pub user_actor_id: String,
+  pub user_local: bool,
   pub user_name: String,
   pub avatar: Option<String>,
+  pub community_actor_id: String,
+  pub community_local: bool,
   pub community_name: String,
 }
 
@@ -317,8 +353,12 @@ pub struct CommunityUserBanView {
   pub community_id: i32,
   pub user_id: i32,
   pub published: chrono::NaiveDateTime,
+  pub user_actor_id: String,
+  pub user_local: bool,
   pub user_name: String,
   pub avatar: Option<String>,
+  pub community_actor_id: String,
+  pub community_local: bool,
   pub community_name: String,
 }
 

server/src/db/mod.rs

@@ -1,10 +1,10 @@
 use crate::settings::Settings;
-use diesel::dsl::*;
-use diesel::result::Error;
-use diesel::*;
+use diesel::{dsl::*, result::Error, *};
 use serde::{Deserialize, Serialize};
 
+pub mod activity;
 pub mod category;
+pub mod code_migrations;
 pub mod comment;
 pub mod comment_view;
 pub mod community;
@@ -42,7 +42,7 @@ pub trait Followable<T> {
   fn follow(conn: &PgConnection, form: &T) -> Result<Self, Error>
   where
     Self: Sized;
-  fn ignore(conn: &PgConnection, form: &T) -> Result<usize, Error>
+  fn unfollow(conn: &PgConnection, form: &T) -> Result<usize, Error>
   where
     Self: Sized;
 }

server/src/db/moderator.rs

@@ -1,8 +1,19 @@
-use super::*;
-use crate::schema::{
-  mod_add, mod_add_community, mod_ban, mod_ban_from_community, mod_lock_post, mod_remove_comment,
-  mod_remove_community, mod_remove_post, mod_sticky_post,
+use crate::{
+  db::Crud,
+  schema::{
+    mod_add,
+    mod_add_community,
+    mod_ban,
+    mod_ban_from_community,
+    mod_lock_post,
+    mod_remove_comment,
+    mod_remove_community,
+    mod_remove_post,
+    mod_sticky_post,
+  },
 };
+use diesel::{dsl::*, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 #[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
 #[table_name = "mod_remove_post"]
@@ -426,11 +437,12 @@ impl Crud<ModAddForm> for ModAdd {
 
 #[cfg(test)]
 mod tests {
-  use super::super::comment::*;
-  use super::super::community::*;
-  use super::super::post::*;
-  use super::super::user::*;
-  use super::*;
+  use super::{
+    super::{comment::*, community::*, post::*, user::*},
+    *,
+  };
+  use crate::db::{establish_unpooled_connection, ListingType, SortType};
+
   // use Crud;
   #[test]
   fn test_crud() {
@@ -438,7 +450,6 @@ mod tests {
 
     let new_mod = UserForm {
       name: "the mod".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -454,13 +465,18 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_mod = User_::create(&conn, &new_mod).unwrap();
 
     let new_user = UserForm {
       name: "jim2".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -476,6 +492,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_user = User_::create(&conn, &new_user).unwrap();
@@ -490,6 +512,12 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
+      actor_id: "changeme".into(),
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
+      published: None,
     };
 
     let inserted_community = Community::create(&conn, &new_community).unwrap();
@@ -510,6 +538,9 @@ mod tests {
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
+      ap_id: "changeme".into(),
+      local: true,
+      published: None,
     };
 
     let inserted_post = Post::create(&conn, &new_post).unwrap();
@@ -522,7 +553,10 @@ mod tests {
       deleted: None,
       read: None,
       parent_id: None,
+      published: None,
       updated: None,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();

server/src/db/moderator_views.rs

@@ -1,4 +1,6 @@
-use super::*;
+use crate::db::limit_and_offset;
+use diesel::{result::Error, *};
+use serde::{Deserialize, Serialize};
 
 table! {
   mod_remove_post_view (id) {

server/src/db/password_reset_request.rs

@@ -1,6 +1,8 @@
-use super::*;
-use crate::schema::password_reset_request;
-use crate::schema::password_reset_request::dsl::*;
+use crate::{
+  db::Crud,
+  schema::{password_reset_request, password_reset_request::dsl::*},
+};
+use diesel::{dsl::*, result::Error, *};
 use sha2::{Digest, Sha256};
 
 #[derive(Queryable, Identifiable, PartialEq, Debug)]
@@ -79,8 +81,8 @@ impl PasswordResetRequest {
 
 #[cfg(test)]
 mod tests {
-  use super::super::user::*;
-  use super::*;
+  use super::{super::user::*, *};
+  use crate::db::{establish_unpooled_connection, ListingType, SortType};
 
   #[test]
   fn test_crud() {
@@ -88,7 +90,6 @@ mod tests {
 
     let new_user = UserForm {
       name: "thommy prw".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -104,6 +105,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_user = User_::create(&conn, &new_user).unwrap();

server/src/db/post.rs

@@ -1,5 +1,11 @@
-use super::*;
-use crate::schema::{post, post_like, post_read, post_saved};
+use crate::{
+  apub::{make_apub_endpoint, EndpointType},
+  db::{Crud, Likeable, Readable, Saveable},
+  naive_now,
+  schema::{post, post_like, post_read, post_saved},
+};
+use diesel::{dsl::*, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 #[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
 #[table_name = "post"]
@@ -21,9 +27,11 @@ pub struct Post {
   pub embed_description: Option<String>,
   pub embed_html: Option<String>,
   pub thumbnail_url: Option<String>,
+  pub ap_id: String,
+  pub local: bool,
 }
 
-#[derive(Insertable, AsChangeset, Clone)]
+#[derive(Insertable, AsChangeset, Clone, Debug)]
 #[table_name = "post"]
 pub struct PostForm {
   pub name: String,
@@ -33,6 +41,7 @@ pub struct PostForm {
   pub community_id: i32,
   pub removed: Option<bool>,
   pub locked: Option<bool>,
+  pub published: Option<chrono::NaiveDateTime>,
   pub updated: Option<chrono::NaiveDateTime>,
   pub deleted: Option<bool>,
   pub nsfw: bool,
@@ -41,6 +50,56 @@ pub struct PostForm {
   pub embed_description: Option<String>,
   pub embed_html: Option<String>,
   pub thumbnail_url: Option<String>,
+  pub ap_id: String,
+  pub local: bool,
+}
+
+impl Post {
+  pub fn read(conn: &PgConnection, post_id: i32) -> Result<Self, Error> {
+    use crate::schema::post::dsl::*;
+    post.filter(id.eq(post_id)).first::<Self>(conn)
+  }
+
+  pub fn list_for_community(
+    conn: &PgConnection,
+    the_community_id: i32,
+  ) -> Result<Vec<Self>, Error> {
+    use crate::schema::post::dsl::*;
+    post
+      .filter(community_id.eq(the_community_id))
+      .load::<Self>(conn)
+  }
+
+  pub fn read_from_apub_id(conn: &PgConnection, object_id: &str) -> Result<Self, Error> {
+    use crate::schema::post::dsl::*;
+    post.filter(ap_id.eq(object_id)).first::<Self>(conn)
+  }
+
+  pub fn update_ap_id(conn: &PgConnection, post_id: i32) -> Result<Self, Error> {
+    use crate::schema::post::dsl::*;
+
+    let apid = make_apub_endpoint(EndpointType::Post, &post_id.to_string()).to_string();
+    diesel::update(post.find(post_id))
+      .set(ap_id.eq(apid))
+      .get_result::<Self>(conn)
+  }
+
+  pub fn permadelete(conn: &PgConnection, post_id: i32) -> Result<Self, Error> {
+    use crate::schema::post::dsl::*;
+
+    let perma_deleted = "*Permananently Deleted*";
+    let perma_deleted_url = "https://deleted.com";
+
+    diesel::update(post.find(post_id))
+      .set((
+        name.eq(perma_deleted),
+        url.eq(perma_deleted_url),
+        body.eq(perma_deleted),
+        deleted.eq(true),
+        updated.eq(naive_now()),
+      ))
+      .get_result::<Self>(conn)
+  }
 }
 
 impl Crud<PostForm> for Post {
@@ -182,16 +241,18 @@ impl Readable<PostReadForm> for PostRead {
 
 #[cfg(test)]
 mod tests {
-  use super::super::community::*;
-  use super::super::user::*;
-  use super::*;
+  use super::{
+    super::{community::*, user::*},
+    *,
+  };
+  use crate::db::{establish_unpooled_connection, ListingType, SortType};
+
   #[test]
   fn test_crud() {
     let conn = establish_unpooled_connection();
 
     let new_user = UserForm {
       name: "jim".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -207,6 +268,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_user = User_::create(&conn, &new_user).unwrap();
@@ -221,6 +288,12 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
+      actor_id: "changeme".into(),
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
+      published: None,
     };
 
     let inserted_community = Community::create(&conn, &new_community).unwrap();
@@ -241,6 +314,9 @@ mod tests {
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
+      ap_id: "changeme".into(),
+      local: true,
+      published: None,
     };
 
     let inserted_post = Post::create(&conn, &new_post).unwrap();
@@ -263,6 +339,8 @@ mod tests {
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     // Post Like

server/src/db/post_view.rs

@@ -1,6 +1,7 @@
 use super::post_view::post_mview::BoxedQuery;
-use super::*;
-use diesel::pg::Pg;
+use crate::db::{fuzzy_search, limit_and_offset, ListingType, MaybeOptional, SortType};
+use diesel::{dsl::*, pg::Pg, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 // The faked schema since diesel doesn't do views
 table! {
@@ -22,10 +23,16 @@ table! {
     embed_description -> Nullable<Text>,
     embed_html -> Nullable<Text>,
     thumbnail_url -> Nullable<Text>,
+    ap_id -> Text,
+    local -> Bool,
     banned -> Bool,
     banned_from_community -> Bool,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     creator_name -> Varchar,
     creator_avatar -> Nullable<Text>,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
     community_removed -> Bool,
     community_deleted -> Bool,
@@ -63,10 +70,16 @@ table! {
     embed_description -> Nullable<Text>,
     embed_html -> Nullable<Text>,
     thumbnail_url -> Nullable<Text>,
+    ap_id -> Text,
+    local -> Bool,
     banned -> Bool,
     banned_from_community -> Bool,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     creator_name -> Varchar,
     creator_avatar -> Nullable<Text>,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
     community_removed -> Bool,
     community_deleted -> Bool,
@@ -107,10 +120,16 @@ pub struct PostView {
   pub embed_description: Option<String>,
   pub embed_html: Option<String>,
   pub thumbnail_url: Option<String>,
+  pub ap_id: String,
+  pub local: bool,
   pub banned: bool,
   pub banned_from_community: bool,
+  pub creator_actor_id: String,
+  pub creator_local: bool,
   pub creator_name: String,
   pub creator_avatar: Option<String>,
+  pub community_actor_id: String,
+  pub community_local: bool,
   pub community_name: String,
   pub community_removed: bool,
   pub community_deleted: bool,
@@ -345,10 +364,12 @@ impl PostView {
 
 #[cfg(test)]
 mod tests {
-  use super::super::community::*;
-  use super::super::post::*;
-  use super::super::user::*;
-  use super::*;
+  use super::{
+    super::{community::*, post::*, user::*},
+    *,
+  };
+  use crate::db::{establish_unpooled_connection, Crud, Likeable};
+
   #[test]
   fn test_crud() {
     let conn = establish_unpooled_connection();
@@ -359,7 +380,6 @@ mod tests {
 
     let new_user = UserForm {
       name: user_name.to_owned(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -375,6 +395,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_user = User_::create(&conn, &new_user).unwrap();
@@ -389,6 +415,12 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
+      actor_id: "changeme".into(),
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
+      published: None,
     };
 
     let inserted_community = Community::create(&conn, &new_community).unwrap();
@@ -409,6 +441,9 @@ mod tests {
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
+      ap_id: "changeme".into(),
+      local: true,
+      published: None,
     };
 
     let inserted_post = Post::create(&conn, &new_post).unwrap();
@@ -473,6 +508,12 @@ mod tests {
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
+      ap_id: "changeme".to_string(),
+      local: true,
+      creator_actor_id: inserted_user.actor_id.to_owned(),
+      creator_local: true,
+      community_actor_id: inserted_community.actor_id.to_owned(),
+      community_local: true,
     };
 
     let expected_post_listing_with_user = PostView {
@@ -512,6 +553,12 @@ mod tests {
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
+      ap_id: "changeme".to_string(),
+      local: true,
+      creator_actor_id: inserted_user.actor_id.to_owned(),
+      creator_local: true,
+      community_actor_id: inserted_community.actor_id.to_owned(),
+      community_local: true,
     };
 
     let read_post_listings_with_user = PostQueryBuilder::create(&conn)

server/src/db/private_message.rs

@@ -1,5 +1,10 @@
-use super::*;
-use crate::schema::private_message;
+use crate::{
+  apub::{make_apub_endpoint, EndpointType},
+  db::Crud,
+  schema::private_message,
+};
+use diesel::{dsl::*, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 #[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
 #[table_name = "private_message"]
@@ -12,6 +17,8 @@ pub struct PrivateMessage {
   pub read: bool,
   pub published: chrono::NaiveDateTime,
   pub updated: Option<chrono::NaiveDateTime>,
+  pub ap_id: String,
+  pub local: bool,
 }
 
 #[derive(Insertable, AsChangeset, Clone)]
@@ -19,10 +26,13 @@ pub struct PrivateMessage {
 pub struct PrivateMessageForm {
   pub creator_id: i32,
   pub recipient_id: i32,
-  pub content: Option<String>,
+  pub content: String,
   pub deleted: Option<bool>,
   pub read: Option<bool>,
+  pub published: Option<chrono::NaiveDateTime>,
   pub updated: Option<chrono::NaiveDateTime>,
+  pub ap_id: String,
+  pub local: bool,
 }
 
 impl Crud<PrivateMessageForm> for PrivateMessage {
@@ -55,17 +65,39 @@ impl Crud<PrivateMessageForm> for PrivateMessage {
   }
 }
 
+impl PrivateMessage {
+  pub fn update_ap_id(conn: &PgConnection, private_message_id: i32) -> Result<Self, Error> {
+    use crate::schema::private_message::dsl::*;
+
+    let apid = make_apub_endpoint(
+      EndpointType::PrivateMessage,
+      &private_message_id.to_string(),
+    )
+    .to_string();
+    diesel::update(private_message.find(private_message_id))
+      .set(ap_id.eq(apid))
+      .get_result::<Self>(conn)
+  }
+
+  pub fn read_from_apub_id(conn: &PgConnection, object_id: &str) -> Result<Self, Error> {
+    use crate::schema::private_message::dsl::*;
+    private_message
+      .filter(ap_id.eq(object_id))
+      .first::<Self>(conn)
+  }
+}
+
 #[cfg(test)]
 mod tests {
-  use super::super::user::*;
-  use super::*;
+  use super::{super::user::*, *};
+  use crate::db::{establish_unpooled_connection, ListingType, SortType};
+
   #[test]
   fn test_crud() {
     let conn = establish_unpooled_connection();
 
     let creator_form = UserForm {
       name: "creator_pm".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -81,13 +113,18 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_creator = User_::create(&conn, &creator_form).unwrap();
 
     let recipient_form = UserForm {
       name: "recipient_pm".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -103,17 +140,26 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_recipient = User_::create(&conn, &recipient_form).unwrap();
 
     let private_message_form = PrivateMessageForm {
-      content: Some("A test private message".into()),
+      content: "A test private message".into(),
       creator_id: inserted_creator.id,
       recipient_id: inserted_recipient.id,
       deleted: None,
       read: None,
+      published: None,
       updated: None,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     let inserted_private_message = PrivateMessage::create(&conn, &private_message_form).unwrap();
@@ -127,6 +173,8 @@ mod tests {
       read: false,
       updated: None,
       published: inserted_private_message.published,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     let read_private_message = PrivateMessage::read(&conn, inserted_private_message.id).unwrap();

server/src/db/private_message_view.rs

@@ -1,5 +1,6 @@
-use super::*;
-use diesel::pg::Pg;
+use crate::db::{limit_and_offset, MaybeOptional};
+use diesel::{pg::Pg, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 // The faked schema since diesel doesn't do views
 table! {
@@ -12,10 +13,16 @@ table! {
     read -> Bool,
     published -> Timestamp,
     updated -> Nullable<Timestamp>,
+    ap_id -> Text,
+    local -> Bool,
     creator_name -> Varchar,
     creator_avatar -> Nullable<Text>,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     recipient_name -> Varchar,
     recipient_avatar -> Nullable<Text>,
+    recipient_actor_id -> Text,
+    recipient_local -> Bool,
   }
 }
 
@@ -29,10 +36,16 @@ table! {
     read -> Bool,
     published -> Timestamp,
     updated -> Nullable<Timestamp>,
+    ap_id -> Text,
+    local -> Bool,
     creator_name -> Varchar,
     creator_avatar -> Nullable<Text>,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     recipient_name -> Varchar,
     recipient_avatar -> Nullable<Text>,
+    recipient_actor_id -> Text,
+    recipient_local -> Bool,
   }
 }
 
@@ -49,10 +62,16 @@ pub struct PrivateMessageView {
   pub read: bool,
   pub published: chrono::NaiveDateTime,
   pub updated: Option<chrono::NaiveDateTime>,
+  pub ap_id: String,
+  pub local: bool,
   pub creator_name: String,
   pub creator_avatar: Option<String>,
+  pub creator_actor_id: String,
+  pub creator_local: bool,
   pub recipient_name: String,
   pub recipient_avatar: Option<String>,
+  pub recipient_actor_id: String,
+  pub recipient_local: bool,
 }
 
 pub struct PrivateMessageQueryBuilder<'a> {

server/src/db/site.rs

@@ -1,5 +1,6 @@
-use super::*;
-use crate::schema::site;
+use crate::{db::Crud, schema::site};
+use diesel::{dsl::*, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 #[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
 #[table_name = "site"]

server/src/db/site_view.rs

@@ -1,4 +1,5 @@
-use super::*;
+use diesel::{result::Error, *};
+use serde::{Deserialize, Serialize};
 
 table! {
   site_view (id) {

server/src/db/user.rs

@@ -1,16 +1,20 @@
-use super::*;
-use crate::schema::user_;
-use crate::schema::user_::dsl::*;
-use crate::{is_email_regex, Settings};
+use crate::{
+  db::Crud,
+  is_email_regex,
+  naive_now,
+  schema::{user_, user_::dsl::*},
+  settings::Settings,
+};
 use bcrypt::{hash, DEFAULT_COST};
+use diesel::{dsl::*, result::Error, *};
 use jsonwebtoken::{decode, encode, DecodingKey, EncodingKey, Header, TokenData, Validation};
+use serde::{Deserialize, Serialize};
 
 #[derive(Queryable, Identifiable, PartialEq, Debug)]
 #[table_name = "user_"]
 pub struct User_ {
   pub id: i32,
   pub name: String,
-  pub fedi_name: String,
   pub preferred_username: Option<String>,
   pub password_encrypted: String,
   pub email: Option<String>,
@@ -27,13 +31,18 @@ pub struct User_ {
   pub show_avatars: bool,
   pub send_notifications_to_email: bool,
   pub matrix_user_id: Option<String>,
+  pub actor_id: String,
+  pub bio: Option<String>,
+  pub local: bool,
+  pub private_key: Option<String>,
+  pub public_key: Option<String>,
+  pub last_refreshed_at: chrono::NaiveDateTime,
 }
 
-#[derive(Insertable, AsChangeset, Clone)]
+#[derive(Insertable, AsChangeset, Clone, Debug)]
 #[table_name = "user_"]
 pub struct UserForm {
   pub name: String,
-  pub fedi_name: String,
   pub preferred_username: Option<String>,
   pub password_encrypted: String,
   pub admin: bool,
@@ -49,6 +58,12 @@ pub struct UserForm {
   pub show_avatars: bool,
   pub send_notifications_to_email: bool,
   pub matrix_user_id: Option<String>,
+  pub actor_id: String,
+  pub bio: Option<String>,
+  pub local: bool,
+  pub private_key: Option<String>,
+  pub public_key: Option<String>,
+  pub last_refreshed_at: Option<chrono::NaiveDateTime>,
 }
 
 impl Crud<UserForm> for User_ {
@@ -78,6 +93,7 @@ impl User_ {
     Self::create(&conn, &edited_user)
   }
 
+  // TODO do more individual updates like these
   pub fn update_password(
     conn: &PgConnection,
     user_id: i32,
@@ -86,13 +102,33 @@ impl User_ {
     let password_hash = hash(new_password, DEFAULT_COST).expect("Couldn't hash password");
 
     diesel::update(user_.find(user_id))
-      .set(password_encrypted.eq(password_hash))
+      .set((
+        password_encrypted.eq(password_hash),
+        updated.eq(naive_now()),
+      ))
       .get_result::<Self>(conn)
   }
 
-  pub fn read_from_name(conn: &PgConnection, from_user_name: String) -> Result<Self, Error> {
+  pub fn read_from_name(conn: &PgConnection, from_user_name: &str) -> Result<Self, Error> {
     user_.filter(name.eq(from_user_name)).first::<Self>(conn)
   }
+
+  pub fn add_admin(conn: &PgConnection, user_id: i32, added: bool) -> Result<Self, Error> {
+    diesel::update(user_.find(user_id))
+      .set(admin.eq(added))
+      .get_result::<Self>(conn)
+  }
+
+  pub fn ban_user(conn: &PgConnection, user_id: i32, ban: bool) -> Result<Self, Error> {
+    diesel::update(user_.find(user_id))
+      .set(banned.eq(ban))
+      .get_result::<Self>(conn)
+  }
+
+  pub fn read_from_actor_id(conn: &PgConnection, object_id: &str) -> Result<Self, Error> {
+    use crate::schema::user_::dsl::*;
+    user_.filter(actor_id.eq(object_id)).first::<Self>(conn)
+  }
 }
 
 #[derive(Debug, Serialize, Deserialize)]
@@ -129,7 +165,7 @@ impl User_ {
     let my_claims = Claims {
       id: self.id,
       username: self.name.to_owned(),
-      iss: self.fedi_name.to_owned(),
+      iss: Settings::get().hostname,
       show_nsfw: self.show_nsfw,
       theme: self.theme.to_owned(),
       default_sort_type: self.default_sort_type,
@@ -177,8 +213,8 @@ impl User_ {
 
 #[cfg(test)]
 mod tests {
-  use super::User_;
-  use super::*;
+  use super::{User_, *};
+  use crate::db::{establish_unpooled_connection, ListingType, SortType};
 
   #[test]
   fn test_crud() {
@@ -186,7 +222,6 @@ mod tests {
 
     let new_user = UserForm {
       name: "thommy".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -202,6 +237,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_user = User_::create(&conn, &new_user).unwrap();
@@ -209,7 +250,6 @@ mod tests {
     let expected_user = User_ {
       id: inserted_user.id,
       name: "thommy".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -226,6 +266,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: inserted_user.published,
     };
 
     let read_user = User_::read(&conn, inserted_user.id).unwrap();

server/src/db/user_mention.rs

@@ -1,6 +1,7 @@
 use super::comment::Comment;
-use super::*;
-use crate::schema::user_mention;
+use crate::{db::Crud, schema::user_mention};
+use diesel::{dsl::*, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 #[derive(Queryable, Associations, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
 #[belongs_to(Comment)]
@@ -53,18 +54,18 @@ impl Crud<UserMentionForm> for UserMention {
 
 #[cfg(test)]
 mod tests {
-  use super::super::comment::*;
-  use super::super::community::*;
-  use super::super::post::*;
-  use super::super::user::*;
-  use super::*;
+  use super::{
+    super::{comment::*, community::*, post::*, user::*},
+    *,
+  };
+  use crate::db::{establish_unpooled_connection, ListingType, SortType};
+
   #[test]
   fn test_crud() {
     let conn = establish_unpooled_connection();
 
     let new_user = UserForm {
       name: "terrylake".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -80,13 +81,18 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_user = User_::create(&conn, &new_user).unwrap();
 
     let recipient_form = UserForm {
       name: "terrylakes recipient".into(),
-      fedi_name: "rrf".into(),
       preferred_username: None,
       password_encrypted: "nope".into(),
       email: None,
@@ -102,6 +108,12 @@ mod tests {
       lang: "browser".into(),
       show_avatars: true,
       send_notifications_to_email: false,
+      actor_id: "changeme".into(),
+      bio: None,
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
     };
 
     let inserted_recipient = User_::create(&conn, &recipient_form).unwrap();
@@ -116,6 +128,12 @@ mod tests {
       deleted: None,
       updated: None,
       nsfw: false,
+      actor_id: "changeme".into(),
+      local: true,
+      private_key: None,
+      public_key: None,
+      last_refreshed_at: None,
+      published: None,
     };
 
     let inserted_community = Community::create(&conn, &new_community).unwrap();
@@ -136,6 +154,9 @@ mod tests {
       embed_description: None,
       embed_html: None,
       thumbnail_url: None,
+      ap_id: "changeme".into(),
+      local: true,
+      published: None,
     };
 
     let inserted_post = Post::create(&conn, &new_post).unwrap();
@@ -148,7 +169,10 @@ mod tests {
       deleted: None,
       read: None,
       parent_id: None,
+      published: None,
       updated: None,
+      ap_id: "changeme".into(),
+      local: true,
     };
 
     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();

server/src/db/user_mention_view.rs

@@ -1,5 +1,6 @@
-use super::*;
-use diesel::pg::Pg;
+use crate::db::{limit_and_offset, MaybeOptional, SortType};
+use diesel::{dsl::*, pg::Pg, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 // The faked schema since diesel doesn't do views
 table! {
@@ -7,6 +8,8 @@ table! {
     id -> Int4,
     user_mention_id -> Int4,
     creator_id -> Int4,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     post_id -> Int4,
     parent_id -> Nullable<Int4>,
     content -> Text,
@@ -16,6 +19,8 @@ table! {
     updated -> Nullable<Timestamp>,
     deleted -> Bool,
     community_id -> Int4,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
     banned -> Bool,
     banned_from_community -> Bool,
@@ -29,6 +34,8 @@ table! {
     my_vote -> Nullable<Int4>,
     saved -> Nullable<Bool>,
     recipient_id -> Int4,
+    recipient_actor_id -> Text,
+    recipient_local -> Bool,
   }
 }
 
@@ -37,6 +44,8 @@ table! {
     id -> Int4,
     user_mention_id -> Int4,
     creator_id -> Int4,
+    creator_actor_id -> Text,
+    creator_local -> Bool,
     post_id -> Int4,
     parent_id -> Nullable<Int4>,
     content -> Text,
@@ -46,6 +55,8 @@ table! {
     updated -> Nullable<Timestamp>,
     deleted -> Bool,
     community_id -> Int4,
+    community_actor_id -> Text,
+    community_local -> Bool,
     community_name -> Varchar,
     banned -> Bool,
     banned_from_community -> Bool,
@@ -59,6 +70,8 @@ table! {
     my_vote -> Nullable<Int4>,
     saved -> Nullable<Bool>,
     recipient_id -> Int4,
+    recipient_actor_id -> Text,
+    recipient_local -> Bool,
   }
 }
 
@@ -70,6 +83,8 @@ pub struct UserMentionView {
   pub id: i32,
   pub user_mention_id: i32,
   pub creator_id: i32,
+  pub creator_actor_id: String,
+  pub creator_local: bool,
   pub post_id: i32,
   pub parent_id: Option<i32>,
   pub content: String,
@@ -79,6 +94,8 @@ pub struct UserMentionView {
   pub updated: Option<chrono::NaiveDateTime>,
   pub deleted: bool,
   pub community_id: i32,
+  pub community_actor_id: String,
+  pub community_local: bool,
   pub community_name: String,
   pub banned: bool,
   pub banned_from_community: bool,
@@ -92,6 +109,8 @@ pub struct UserMentionView {
   pub my_vote: Option<i32>,
   pub saved: Option<bool>,
   pub recipient_id: i32,
+  pub recipient_actor_id: String,
+  pub recipient_local: bool,
 }
 
 pub struct UserMentionQueryBuilder<'a> {

server/src/db/user_view.rs

@@ -1,15 +1,18 @@
 use super::user_view::user_mview::BoxedQuery;
-use super::*;
-use diesel::pg::Pg;
+use crate::db::{fuzzy_search, limit_and_offset, MaybeOptional, SortType};
+use diesel::{dsl::*, pg::Pg, result::Error, *};
+use serde::{Deserialize, Serialize};
 
 table! {
   user_view (id) {
     id -> Int4,
+    actor_id -> Text,
     name -> Varchar,
     avatar -> Nullable<Text>,
     email -> Nullable<Text>,
     matrix_user_id -> Nullable<Text>,
-    fedi_name -> Varchar,
+    bio -> Nullable<Text>,
+    local -> Bool,
     admin -> Bool,
     banned -> Bool,
     show_avatars -> Bool,
@@ -25,11 +28,13 @@ table! {
 table! {
   user_mview (id) {
     id -> Int4,
+    actor_id -> Text,
     name -> Varchar,
     avatar -> Nullable<Text>,
     email -> Nullable<Text>,
     matrix_user_id -> Nullable<Text>,
-    fedi_name -> Varchar,
+    bio -> Nullable<Text>,
+    local -> Bool,
     admin -> Bool,
     banned -> Bool,
     show_avatars -> Bool,
@@ -48,11 +53,13 @@ table! {
 #[table_name = "user_view"]
 pub struct UserView {
   pub id: i32,
+  pub actor_id: String,
   pub name: String,
   pub avatar: Option<String>,
   pub email: Option<String>,
   pub matrix_user_id: Option<String>,
-  pub fedi_name: String,
+  pub bio: Option<String>,
+  pub local: bool,
   pub admin: bool,
   pub banned: bool,
   pub show_avatars: bool,

server/src/lib.rs

@@ -16,6 +16,8 @@ pub extern crate dotenv;
 pub extern crate jsonwebtoken;
 pub extern crate lettre;
 pub extern crate lettre_email;
+extern crate log;
+pub extern crate openssl;
 pub extern crate rand;
 pub extern crate regex;
 pub extern crate rss;
@@ -34,23 +36,28 @@ pub mod settings;
 pub mod version;
 pub mod websocket;
 
+use crate::settings::Settings;
 use actix_web::dev::ConnectionInfo;
-use chrono::{DateTime, NaiveDateTime, Utc};
+use chrono::{DateTime, FixedOffset, Local, NaiveDateTime, Utc};
 use isahc::prelude::*;
-use lettre::smtp::authentication::{Credentials, Mechanism};
-use lettre::smtp::extension::ClientId;
-use lettre::smtp::ConnectionReuseParameters;
-use lettre::{ClientSecurity, SmtpClient, Transport};
+use itertools::Itertools;
+use lettre::{
+  smtp::{
+    authentication::{Credentials, Mechanism},
+    extension::ClientId,
+    ConnectionReuseParameters,
+  },
+  ClientSecurity,
+  SmtpClient,
+  Transport,
+};
 use lettre_email::Email;
 use log::error;
 use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};
-use rand::distributions::Alphanumeric;
-use rand::{thread_rng, Rng};
+use rand::{distributions::Alphanumeric, thread_rng, Rng};
 use regex::{Regex, RegexBuilder};
 use serde::Deserialize;
 
-use crate::settings::Settings;
-
 pub type ConnectionId = usize;
 pub type PostId = i32;
 pub type CommunityId = i32;
@@ -69,6 +76,11 @@ pub fn naive_from_unix(time: i64) -> NaiveDateTime {
   NaiveDateTime::from_timestamp(time, 0)
 }
 
+pub fn convert_datetime(datetime: NaiveDateTime) -> DateTime<FixedOffset> {
+  let now = Local::now();
+  DateTime::<FixedOffset>::from_utc(datetime, *now.offset())
+}
+
 pub fn is_email_regex(test: &str) -> bool {
   EMAIL_REGEX.is_match(test)
 }
@@ -97,20 +109,6 @@ pub fn slurs_vec_to_str(slurs: Vec<&str>) -> String {
   [start, combined].concat()
 }
 
-pub fn extract_usernames(test: &str) -> Vec<&str> {
-  let mut matches: Vec<&str> = USERNAME_MATCHES_REGEX
-    .find_iter(test)
-    .map(|mat| mat.as_str())
-    .collect();
-
-  // Unique
-  matches.sort_unstable();
-  matches.dedup();
-
-  // Remove /u/
-  matches.iter().map(|t| &t[3..]).collect()
-}
-
 pub fn generate_random_string() -> String {
   thread_rng().sample_iter(&Alphanumeric).take(30).collect()
 }
@@ -243,9 +241,52 @@ pub fn get_ip(conn_info: &ConnectionInfo) -> String {
     .to_string()
 }
 
+// TODO nothing is done with community / group webfingers yet, so just ignore those for now
+#[derive(Clone, PartialEq, Eq, Hash)]
+pub struct MentionData {
+  pub name: String,
+  pub domain: String,
+}
+
+impl MentionData {
+  pub fn is_local(&self) -> bool {
+    Settings::get().hostname.eq(&self.domain)
+  }
+  pub fn full_name(&self) -> String {
+    format!("@{}@{}", &self.name, &self.domain)
+  }
+}
+
+pub fn scrape_text_for_mentions(text: &str) -> Vec<MentionData> {
+  let mut out: Vec<MentionData> = Vec::new();
+  for caps in WEBFINGER_USER_REGEX.captures_iter(text) {
+    out.push(MentionData {
+      name: caps["name"].to_string(),
+      domain: caps["domain"].to_string(),
+    });
+  }
+  out.into_iter().unique().collect()
+}
+
 #[cfg(test)]
 mod tests {
-  use crate::{extract_usernames, is_email_regex, remove_slurs, slur_check, slurs_vec_to_str};
+  use crate::{
+    is_email_regex,
+    remove_slurs,
+    scrape_text_for_mentions,
+    slur_check,
+    slurs_vec_to_str,
+  };
+
+  #[test]
+  fn test_mentions_regex() {
+    let text = "Just read a great blog post by [@tedu@honk.teduangst.com](/u/test). And another by !test_community@fish.teduangst.com . Another [@lemmy@lemmy_alpha:8540](/u/fish)";
+    let mentions = scrape_text_for_mentions(text);
+
+    assert_eq!(mentions[0].name, "tedu".to_string());
+    assert_eq!(mentions[0].domain, "honk.teduangst.com".to_string());
+    assert_eq!(mentions[1].domain, "lemmy_alpha:8540".to_string());
+  }
 
   #[test]
   fn test_email() {
@@ -281,13 +322,6 @@ mod tests {
     }
   }
 
-  #[test]
-  fn test_extract_usernames() {
-    let usernames = extract_usernames("this is a user mention for [/u/testme](/u/testme) and thats all. Oh [/u/another](/u/another) user. And the first again [/u/testme](/u/testme) okay");
-    let expected = vec!["another", "testme"];
-    assert_eq!(usernames, expected);
-  }
-
   // These helped with testing
   // #[test]
   // fn test_iframely() {
@@ -314,4 +348,7 @@ lazy_static! {
   static ref EMAIL_REGEX: Regex = Regex::new(r"^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$").unwrap();
   static ref SLUR_REGEX: Regex = RegexBuilder::new(r"(fag(g|got|tard)?|maricos?|cock\s?sucker(s|ing)?|nig(\b|g?(a|er)?(s|z)?)\b|dindu(s?)|mudslime?s?|kikes?|mongoloids?|towel\s*heads?|\bspi(c|k)s?\b|\bchinks?|niglets?|beaners?|\bnips?\b|\bcoons?\b|jungle\s*bunn(y|ies?)|jigg?aboo?s?|\bpakis?\b|rag\s*heads?|gooks?|cunts?|bitch(es|ing|y)?|puss(y|ies?)|twats?|feminazis?|whor(es?|ing)|\bslut(s|t?y)?|\btrann?(y|ies?)|ladyboy(s?)|\b(b|re|r)tard(ed)?s?)").case_insensitive(true).build().unwrap();
   static ref USERNAME_MATCHES_REGEX: Regex = Regex::new(r"/u/[a-zA-Z][0-9a-zA-Z_]*").unwrap();
+  // TODO keep this old one, it didn't work with port well tho
+  // static ref WEBFINGER_USER_REGEX: Regex = Regex::new(r"@(?P<name>[\w.]+)@(?P<domain>[a-zA-Z0-9._-]+\.[a-zA-Z0-9_-]+)").unwrap();
+  static ref WEBFINGER_USER_REGEX: Regex = Regex::new(r"@(?P<name>[\w.]+)@(?P<domain>[a-zA-Z0-9._:-]+)").unwrap();
 }

server/src/main.rs

@@ -4,21 +4,25 @@ extern crate diesel_migrations;
 
 use actix::prelude::*;
 use actix_web::*;
-use diesel::r2d2::{ConnectionManager, Pool};
-use diesel::PgConnection;
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
+use failure::Error;
 use lemmy_server::{
+  db::code_migrations::run_advanced_migrations,
   rate_limit::{rate_limiter::RateLimiter, RateLimit},
   routes::{api, federation, feeds, index, nodeinfo, webfinger},
   settings::Settings,
   websocket::server::*,
 };
-use std::{io, sync::Arc};
+use std::sync::Arc;
 use tokio::sync::Mutex;
 
 embed_migrations!();
 
 #[actix_rt::main]
-async fn main() -> io::Result<()> {
+async fn main() -> Result<(), Error> {
   env_logger::init();
   let settings = Settings::get();
 
@@ -32,6 +36,7 @@ async fn main() -> io::Result<()> {
   // Run the migrations from code
   let conn = pool.get().unwrap();
   embedded_migrations::run(&conn).unwrap();
+  run_advanced_migrations(&conn).unwrap();
 
   // Set up the rate limiter
   let rate_limiter = RateLimit {
@@ -47,31 +52,33 @@ async fn main() -> io::Result<()> {
   );
 
   // Create Http server with websocket support
-  HttpServer::new(move || {
-    let settings = Settings::get();
-    let rate_limiter = rate_limiter.clone();
-    App::new()
-      .wrap(middleware::Logger::default())
-      .data(pool.clone())
-      .data(server.clone())
-      // The routes
-      .configure(move |cfg| api::config(cfg, &rate_limiter))
-      .configure(federation::config)
-      .configure(feeds::config)
-      .configure(index::config)
-      .configure(nodeinfo::config)
-      .configure(webfinger::config)
-      // static files
-      .service(actix_files::Files::new(
-        "/static",
-        settings.front_end_dir.to_owned(),
-      ))
-      .service(actix_files::Files::new(
-        "/docs",
-        settings.front_end_dir + "/documentation",
-      ))
-  })
-  .bind((settings.bind, settings.port))?
-  .run()
-  .await
+  Ok(
+    HttpServer::new(move || {
+      let settings = Settings::get();
+      let rate_limiter = rate_limiter.clone();
+      App::new()
+        .wrap(middleware::Logger::default())
+        .data(pool.clone())
+        .data(server.clone())
+        // The routes
+        .configure(move |cfg| api::config(cfg, &rate_limiter))
+        .configure(federation::config)
+        .configure(feeds::config)
+        .configure(index::config)
+        .configure(nodeinfo::config)
+        .configure(webfinger::config)
+        // static files
+        .service(actix_files::Files::new(
+          "/static",
+          settings.front_end_dir.to_owned(),
+        ))
+        .service(actix_files::Files::new(
+          "/docs",
+          settings.front_end_dir + "/documentation",
+        ))
+    })
+    .bind((settings.bind, settings.port))?
+    .run()
+    .await?,
+  )
 }

server/src/rate_limit/mod.rs

@@ -1,23 +1,18 @@
-pub mod rate_limiter;
-
 use super::{IPAddr, Settings};
-use crate::api::APIError;
-use crate::get_ip;
-use crate::settings::RateLimitConfig;
+use crate::{api::APIError, get_ip, settings::RateLimitConfig};
 use actix_web::dev::{Service, ServiceRequest, ServiceResponse, Transform};
-use failure::Error;
 use futures::future::{ok, Ready};
-use log::debug;
 use rate_limiter::{RateLimitType, RateLimiter};
-use std::collections::HashMap;
-use std::future::Future;
-use std::pin::Pin;
-use std::sync::Arc;
-use std::task::{Context, Poll};
-use std::time::SystemTime;
-use strum::IntoEnumIterator;
+use std::{
+  future::Future,
+  pin::Pin,
+  sync::Arc,
+  task::{Context, Poll},
+};
 use tokio::sync::Mutex;
 
+pub mod rate_limiter;
+
 #[derive(Debug, Clone)]
 pub struct RateLimit {
   pub rate_limiter: Arc<Mutex<RateLimiter>>,
@@ -92,7 +87,7 @@ impl RateLimited {
         }
         RateLimitType::Post => {
           limiter.check_rate_limit_full(
-            self.type_.clone(),
+            self.type_,
             &ip_addr,
             rate_limit.post,
             rate_limit.post_per_second,

server/src/rate_limit/rate_limiter.rs

@@ -1,4 +1,9 @@
-use super::*;
+use super::IPAddr;
+use crate::api::APIError;
+use failure::Error;
+use log::debug;
+use std::{collections::HashMap, time::SystemTime};
+use strum::IntoEnumIterator;
 
 #[derive(Debug, Clone)]
 pub struct RateLimitBucket {

server/src/routes/api.rs

@@ -1,10 +1,11 @@
-use super::*;
-use crate::api::comment::*;
-use crate::api::community::*;
-use crate::api::post::*;
-use crate::api::site::*;
-use crate::api::user::*;
-use crate::rate_limit::RateLimit;
+use crate::{
+  api::{comment::*, community::*, post::*, site::*, user::*, Oper, Perform},
+  rate_limit::RateLimit,
+  routes::{ChatServerParam, DbPoolParam},
+  websocket::WebsocketInfo,
+};
+use actix_web::{error::ErrorBadRequest, *};
+use serde::Serialize;
 
 pub fn config(cfg: &mut web::ServiceConfig, rate_limit: &RateLimit) {
   cfg.service(
@@ -83,6 +84,14 @@ pub fn config(cfg: &mut web::ServiceConfig, rate_limit: &RateLimit) {
           .route("/like", web::post().to(route_post::<CreateCommentLike>))
           .route("/save", web::put().to(route_post::<SaveComment>)),
       )
+      // Private Message
+      .service(
+        web::scope("/private_message")
+          .wrap(rate_limit.message())
+          .route("/list", web::get().to(route_get::<GetPrivateMessages>))
+          .route("", web::post().to(route_post::<CreatePrivateMessage>))
+          .route("", web::put().to(route_post::<EditPrivateMessage>)),
+      )
       // User
       .service(
         // Account action, I don't like that it's in /user maybe /accounts

server/src/routes/federation.rs

@@ -1,18 +1,45 @@
-use super::*;
-use crate::apub;
+use crate::{
+  apub::{
+    comment::get_apub_comment,
+    community::*,
+    community_inbox::community_inbox,
+    post::get_apub_post,
+    shared_inbox::shared_inbox,
+    user::*,
+    user_inbox::user_inbox,
+    APUB_JSON_CONTENT_TYPE,
+  },
+  settings::Settings,
+};
+use actix_web::*;
 
 pub fn config(cfg: &mut web::ServiceConfig) {
-  cfg
-    .route(
-      "/federation/c/{community_name}",
-      web::get().to(apub::community::get_apub_community),
-    )
-    .route(
-      "/federation/c/{community_name}/followers",
-      web::get().to(apub::community::get_apub_community_followers),
-    )
-    .route(
-      "/federation/u/{user_name}",
-      web::get().to(apub::user::get_apub_user),
-    );
+  if Settings::get().federation.enabled {
+    println!("federation enabled, host is {}", Settings::get().hostname);
+    cfg
+      .service(
+        web::scope("/")
+          .guard(guard::Header("Accept", APUB_JSON_CONTENT_TYPE))
+          .route(
+            "/c/{community_name}",
+            web::get().to(get_apub_community_http),
+          )
+          .route(
+            "/c/{community_name}/followers",
+            web::get().to(get_apub_community_followers),
+          )
+          // TODO This is only useful for history which we aren't doing right now
+          // .route(
+          //   "/c/{community_name}/outbox",
+          //   web::get().to(get_apub_community_outbox),
+          // )
+          .route("/u/{user_name}", web::get().to(get_apub_user_http))
+          .route("/post/{post_id}", web::get().to(get_apub_post))
+          .route("/comment/{comment_id}", web::get().to(get_apub_comment)),
+      )
+      // Inboxes dont work with the header guard for some reason.
+      .route("/c/{community_name}/inbox", web::post().to(community_inbox))
+      .route("/u/{user_name}/inbox", web::post().to(user_inbox))
+      .route("/inbox", web::post().to(shared_inbox));
+  }
 }

server/src/routes/feeds.rs

@@ -1,11 +1,28 @@
-use super::*;
-use crate::db::comment_view::{ReplyQueryBuilder, ReplyView};
-use crate::db::community::Community;
-use crate::db::post_view::{PostQueryBuilder, PostView};
-use crate::db::site_view::SiteView;
-use crate::db::user::{Claims, User_};
-use crate::db::user_mention_view::{UserMentionQueryBuilder, UserMentionView};
-use crate::db::{ListingType, SortType};
+use crate::{
+  db::{
+    comment_view::{ReplyQueryBuilder, ReplyView},
+    community::Community,
+    post_view::{PostQueryBuilder, PostView},
+    site_view::SiteView,
+    user::{Claims, User_},
+    user_mention_view::{UserMentionQueryBuilder, UserMentionView},
+    ListingType,
+    SortType,
+  },
+  markdown_to_html,
+  routes::DbPoolParam,
+  settings::Settings,
+};
+use actix_web::{error::ErrorBadRequest, *};
+use chrono::{DateTime, NaiveDateTime, Utc};
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
+use rss::{CategoryBuilder, ChannelBuilder, GuidBuilder, Item, ItemBuilder};
+use serde::Deserialize;
+use std::str::FromStr;
+use strum::ParseError;
 
 #[derive(Deserialize)]
 pub struct Params {
@@ -21,14 +38,11 @@ enum RequestType {
 
 pub fn config(cfg: &mut web::ServiceConfig) {
   cfg
-    .route("/feeds/{type}/{name}.xml", web::get().to(feeds::get_feed))
-    .route("/feeds/all.xml", web::get().to(feeds::get_all_feed));
+    .route("/feeds/{type}/{name}.xml", web::get().to(get_feed))
+    .route("/feeds/all.xml", web::get().to(get_all_feed));
 }
 
-async fn get_all_feed(
-  info: web::Query<Params>,
-  db: web::Data<Pool<ConnectionManager<PgConnection>>>,
-) -> Result<HttpResponse, Error> {
+async fn get_all_feed(info: web::Query<Params>, db: DbPoolParam) -> Result<HttpResponse, Error> {
   let res = web::block(move || {
     let conn = db.get()?;
     get_feed_all_data(&conn, &get_sort_type(info)?)
@@ -144,8 +158,7 @@ fn get_feed_community(
   community_name: String,
 ) -> Result<ChannelBuilder, failure::Error> {
   let site_view = SiteView::read(&conn)?;
-  let community = Community::read_from_name(&conn, community_name)?;
-  let community_url = community.get_url();
+  let community = Community::read_from_name(&conn, &community_name)?;
 
   let posts = PostQueryBuilder::create(&conn)
     .listing_type(ListingType::All)
@@ -158,7 +171,7 @@ fn get_feed_community(
   let mut channel_builder = ChannelBuilder::default();
   channel_builder
     .title(&format!("{} - {}", site_view.name, community.name))
-    .link(community_url)
+    .link(community.actor_id)
     .items(items);
 
   if let Some(community_desc) = community.description {

server/src/routes/index.rs

@@ -1,4 +1,6 @@
-use super::*;
+use crate::settings::Settings;
+use actix_files::NamedFile;
+use actix_web::*;
 
 pub fn config(cfg: &mut web::ServiceConfig) {
   cfg

server/src/routes/mod.rs

@@ -1,31 +1,3 @@
-use crate::api::{Oper, Perform};
-use crate::db::site_view::SiteView;
-use crate::rate_limit::rate_limiter::RateLimiter;
-use crate::websocket::{server::ChatServer, WebsocketInfo};
-use crate::{get_ip, markdown_to_html, version, Settings};
-use actix::prelude::*;
-use actix_files::NamedFile;
-use actix_web::{body::Body, error::ErrorBadRequest, web::Query, *};
-use actix_web_actors::ws;
-use chrono::{DateTime, NaiveDateTime, Utc};
-use diesel::{
-  r2d2::{ConnectionManager, Pool},
-  PgConnection,
-};
-use log::{error, info};
-use regex::Regex;
-use rss::{CategoryBuilder, ChannelBuilder, GuidBuilder, Item, ItemBuilder};
-use serde::{Deserialize, Serialize};
-use serde_json::json;
-use std::str::FromStr;
-use std::sync::{Arc, Mutex};
-use std::time::{Duration, Instant};
-use strum::ParseError;
-
-pub type DbPoolParam = web::Data<Pool<ConnectionManager<PgConnection>>>;
-pub type RateLimitParam = web::Data<Arc<Mutex<RateLimiter>>>;
-pub type ChatServerParam = web::Data<Addr<ChatServer>>;
-
 pub mod api;
 pub mod federation;
 pub mod feeds;
@@ -33,3 +5,16 @@ pub mod index;
 pub mod nodeinfo;
 pub mod webfinger;
 pub mod websocket;
+
+use crate::{rate_limit::rate_limiter::RateLimiter, websocket::server::ChatServer};
+use actix::prelude::*;
+use actix_web::*;
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
+use std::sync::{Arc, Mutex};
+
+pub type DbPoolParam = web::Data<Pool<ConnectionManager<PgConnection>>>;
+pub type RateLimitParam = web::Data<Arc<Mutex<RateLimiter>>>;
+pub type ChatServerParam = web::Data<Addr<ChatServer>>;

server/src/routes/nodeinfo.rs

@@ -1,4 +1,13 @@
-use super::*;
+use crate::{
+  apub::get_apub_protocol_string,
+  db::site_view::SiteView,
+  routes::DbPoolParam,
+  version,
+  Settings,
+};
+use actix_web::{body::Body, error::ErrorBadRequest, *};
+use serde::{Deserialize, Serialize};
+use url::Url;
 
 pub fn config(cfg: &mut web::ServiceConfig) {
   cfg
@@ -6,26 +15,28 @@ pub fn config(cfg: &mut web::ServiceConfig) {
     .route("/.well-known/nodeinfo", web::get().to(node_info_well_known));
 }
 
-async fn node_info_well_known() -> HttpResponse<Body> {
+async fn node_info_well_known() -> Result<HttpResponse<Body>, failure::Error> {
   let node_info = NodeInfoWellKnown {
     links: NodeInfoWellKnownLinks {
-      rel: "http://nodeinfo.diaspora.software/ns/schema/2.0".to_string(),
-      href: format!("https://{}/nodeinfo/2.0.json", Settings::get().hostname),
+      rel: Url::parse("http://nodeinfo.diaspora.software/ns/schema/2.0")?,
+      href: Url::parse(&format!(
+        "{}://{}/nodeinfo/2.0.json",
+        get_apub_protocol_string(),
+        Settings::get().hostname
+      ))?,
     },
   };
-  HttpResponse::Ok().json(node_info)
+  Ok(HttpResponse::Ok().json(node_info))
 }
 
-async fn node_info(
-  db: web::Data<Pool<ConnectionManager<PgConnection>>>,
-) -> Result<HttpResponse, Error> {
+async fn node_info(db: DbPoolParam) -> Result<HttpResponse, Error> {
   let res = web::block(move || {
     let conn = db.get()?;
     let site_view = match SiteView::read(&conn) {
       Ok(site_view) => site_view,
       Err(_) => return Err(format_err!("not_found")),
     };
-    let protocols = if Settings::get().federation_enabled {
+    let protocols = if Settings::get().federation.enabled {
       vec!["activitypub".to_string()]
     } else {
       vec![]
@@ -53,41 +64,41 @@ async fn node_info(
   Ok(res)
 }
 
-#[derive(Serialize)]
-struct NodeInfoWellKnown {
-  links: NodeInfoWellKnownLinks,
+#[derive(Serialize, Deserialize, Debug)]
+pub struct NodeInfoWellKnown {
+  pub links: NodeInfoWellKnownLinks,
 }
 
-#[derive(Serialize)]
-struct NodeInfoWellKnownLinks {
-  rel: String,
-  href: String,
+#[derive(Serialize, Deserialize, Debug)]
+pub struct NodeInfoWellKnownLinks {
+  pub rel: Url,
+  pub href: Url,
 }
 
-#[derive(Serialize)]
-struct NodeInfo {
-  version: String,
-  software: NodeInfoSoftware,
-  protocols: Vec<String>,
-  usage: NodeInfoUsage,
+#[derive(Serialize, Deserialize, Debug)]
+pub struct NodeInfo {
+  pub version: String,
+  pub software: NodeInfoSoftware,
+  pub protocols: Vec<String>,
+  pub usage: NodeInfoUsage,
 }
 
-#[derive(Serialize)]
-struct NodeInfoSoftware {
-  name: String,
-  version: String,
+#[derive(Serialize, Deserialize, Debug)]
+pub struct NodeInfoSoftware {
+  pub name: String,
+  pub version: String,
 }
 
-#[derive(Serialize)]
+#[derive(Serialize, Deserialize, Debug)]
 #[serde(rename_all = "camelCase")]
-struct NodeInfoUsage {
-  users: NodeInfoUsers,
-  local_posts: i64,
-  local_comments: i64,
-  open_registrations: bool,
+pub struct NodeInfoUsage {
+  pub users: NodeInfoUsers,
+  pub local_posts: i64,
+  pub local_comments: i64,
+  pub open_registrations: bool,
 }
 
-#[derive(Serialize)]
-struct NodeInfoUsers {
-  total: i64,
+#[derive(Serialize, Deserialize, Debug)]
+pub struct NodeInfoUsers {
+  pub total: i64,
 }

server/src/routes/webfinger.rs

@@ -1,13 +1,36 @@
-use super::*;
-use crate::db::community::Community;
+use crate::{
+  db::{community::Community, user::User_},
+  routes::DbPoolParam,
+  Settings,
+};
+use actix_web::{error::ErrorBadRequest, web::Query, *};
+use regex::Regex;
+use serde::{Deserialize, Serialize};
 
 #[derive(Deserialize)]
 pub struct Params {
   resource: String,
 }
 
+#[derive(Serialize, Deserialize, Debug)]
+pub struct WebFingerResponse {
+  pub subject: String,
+  pub aliases: Vec<String>,
+  pub links: Vec<WebFingerLink>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct WebFingerLink {
+  pub rel: Option<String>,
+  #[serde(rename(serialize = "type", deserialize = "type"))]
+  pub type_: Option<String>,
+  pub href: Option<String>,
+  #[serde(skip_serializing_if = "Option::is_none")]
+  pub template: Option<String>,
+}
+
 pub fn config(cfg: &mut web::ServiceConfig) {
-  if Settings::get().federation_enabled {
+  if Settings::get().federation.enabled {
     cfg.route(
       ".well-known/webfinger",
       web::get().to(get_webfinger_response),
@@ -21,6 +44,11 @@ lazy_static! {
     Settings::get().hostname
   ))
   .unwrap();
+  static ref WEBFINGER_USER_REGEX: Regex = Regex::new(&format!(
+    "^acct:([a-z0-9_]{{3, 20}})@{}$",
+    Settings::get().hostname
+  ))
+  .unwrap();
 }
 
 /// Responds to webfinger requests of the following format. There isn't any real documentation for
@@ -31,56 +59,63 @@ lazy_static! {
 /// https://radical.town/.well-known/webfinger?resource=acct:felix@radical.town
 async fn get_webfinger_response(
   info: Query<Params>,
-  db: web::Data<Pool<ConnectionManager<PgConnection>>>,
+  db: DbPoolParam,
 ) -> Result<HttpResponse, Error> {
   let res = web::block(move || {
     let conn = db.get()?;
 
-    let regex_parsed = WEBFINGER_COMMUNITY_REGEX
+    let community_regex_parsed = WEBFINGER_COMMUNITY_REGEX
       .captures(&info.resource)
-      .map(|c| c.get(1));
-    // TODO: replace this with .flatten() once we are running rust 1.40
-    let regex_parsed_flattened = match regex_parsed {
-      Some(s) => s,
-      None => None,
-    };
-    let community_name = match regex_parsed_flattened {
-      Some(c) => c.as_str(),
-      None => return Err(format_err!("not_found")),
+      .map(|c| c.get(1))
+      .flatten();
+
+    let user_regex_parsed = WEBFINGER_USER_REGEX
+      .captures(&info.resource)
+      .map(|c| c.get(1))
+      .flatten();
+
+    let url = if let Some(community_name) = community_regex_parsed {
+      // Make sure the requested community exists.
+      let community = match Community::read_from_name(&conn, &community_name.as_str()) {
+        Ok(o) => o,
+        Err(_) => return Err(format_err!("not_found")),
+      };
+      community.actor_id
+    } else if let Some(user_name) = user_regex_parsed {
+      // Make sure the requested user exists.
+      let user = match User_::read_from_name(&conn, &user_name.as_str()) {
+        Ok(o) => o,
+        Err(_) => return Err(format_err!("not_found")),
+      };
+      user.actor_id
+    } else {
+      return Err(format_err!("not_found"));
     };
 
-    // Make sure the requested community exists.
-    let community = match Community::read_from_name(&conn, community_name.to_string()) {
-      Ok(o) => o,
-      Err(_) => return Err(format_err!("not_found")),
+    let wf_res = WebFingerResponse {
+      subject: info.resource.to_owned(),
+      aliases: vec![url.to_owned()],
+      links: vec![
+        WebFingerLink {
+          rel: Some("http://webfinger.net/rel/profile-page".to_string()),
+          type_: Some("text/html".to_string()),
+          href: Some(url.to_owned()),
+          template: None,
+        },
+        WebFingerLink {
+          rel: Some("self".to_string()),
+          type_: Some("application/activity+json".to_string()),
+          href: Some(url),
+          template: None,
+        }, // TODO: this also needs to return the subscribe link once that's implemented
+           //{
+           //  "rel": "http://ostatus.org/schema/1.0/subscribe",
+           //  "template": "https://my_instance.com/authorize_interaction?uri={uri}"
+           //}
+      ],
     };
 
-    let community_url = community.get_url();
-
-    Ok(json!({
-    "subject": info.resource,
-    "aliases": [
-      community_url,
-    ],
-    "links": [
-    {
-      "rel": "http://webfinger.net/rel/profile-page",
-      "type": "text/html",
-      "href": community_url
-    },
-    {
-      "rel": "self",
-      "type": "application/activity+json",
-      // Yes this is correct, this link doesn't include the `.json` extension
-      "href": community_url
-    }
-    // TODO: this also needs to return the subscribe link once that's implemented
-    //{
-    //  "rel": "http://ostatus.org/schema/1.0/subscribe",
-    //  "template": "https://my_instance.com/authorize_interaction?uri={uri}"
-    //}
-    ]
-    }))
+    Ok(wf_res)
   })
   .await
   .map(|json| HttpResponse::Ok().json(json))

server/src/routes/websocket.rs

@@ -1,5 +1,12 @@
-use super::*;
-use crate::websocket::server::*;
+use crate::{
+  get_ip,
+  websocket::server::{ChatServer, *},
+};
+use actix::prelude::*;
+use actix_web::*;
+use actix_web_actors::ws;
+use log::{debug, error, info};
+use std::time::{Duration, Instant};
 
 /// How often heartbeat pings are sent
 const HEARTBEAT_INTERVAL: Duration = Duration::from_secs(5);
@@ -32,7 +39,6 @@ struct WSSession {
   /// Client must send ping at least once per 10 seconds (CLIENT_TIMEOUT),
   /// otherwise we drop connection.
   hb: Instant,
-  // db: Pool<ConnectionManager<PgConnection>>,
 }
 
 impl Actor for WSSession {
@@ -144,7 +150,7 @@ impl WSSession {
       // check client heartbeats
       if Instant::now().duration_since(act.hb) > CLIENT_TIMEOUT {
         // heartbeat timed out
-        error!("Websocket Client heartbeat failed, disconnecting!");
+        debug!("Websocket Client heartbeat failed, disconnecting!");
 
         // notify chat server
         act.cs_addr.do_send(Disconnect {

server/src/schema.rs

@@ -1,3 +1,14 @@
+table! {
+    activity (id) {
+        id -> Int4,
+        user_id -> Int4,
+        data -> Jsonb,
+        local -> Bool,
+        published -> Timestamp,
+        updated -> Nullable<Timestamp>,
+    }
+}
+
 table! {
     category (id) {
         id -> Int4,
@@ -17,6 +28,8 @@ table! {
         published -> Timestamp,
         updated -> Nullable<Timestamp>,
         deleted -> Bool,
+        ap_id -> Varchar,
+        local -> Bool,
     }
 }
 
@@ -53,6 +66,11 @@ table! {
         updated -> Nullable<Timestamp>,
         deleted -> Bool,
         nsfw -> Bool,
+        actor_id -> Varchar,
+        local -> Bool,
+        private_key -> Nullable<Text>,
+        public_key -> Nullable<Text>,
+        last_refreshed_at -> Timestamp,
     }
 }
 
@@ -211,6 +229,8 @@ table! {
         embed_description -> Nullable<Text>,
         embed_html -> Nullable<Text>,
         thumbnail_url -> Nullable<Text>,
+        ap_id -> Varchar,
+        local -> Bool,
     }
 }
 
@@ -252,6 +272,8 @@ table! {
         read -> Bool,
         published -> Timestamp,
         updated -> Nullable<Timestamp>,
+        ap_id -> Varchar,
+        local -> Bool,
     }
 }
 
@@ -273,7 +295,6 @@ table! {
     user_ (id) {
         id -> Int4,
         name -> Varchar,
-        fedi_name -> Varchar,
         preferred_username -> Nullable<Varchar>,
         password_encrypted -> Text,
         email -> Nullable<Text>,
@@ -290,6 +311,12 @@ table! {
         show_avatars -> Bool,
         send_notifications_to_email -> Bool,
         matrix_user_id -> Nullable<Text>,
+        actor_id -> Varchar,
+        bio -> Nullable<Text>,
+        local -> Bool,
+        private_key -> Nullable<Text>,
+        public_key -> Nullable<Text>,
+        last_refreshed_at -> Timestamp,
     }
 }
 
@@ -311,6 +338,7 @@ table! {
     }
 }
 
+joinable!(activity -> user_ (user_id));
 joinable!(comment -> post (post_id));
 joinable!(comment -> user_ (creator_id));
 joinable!(comment_like -> comment (comment_id));
@@ -353,6 +381,7 @@ joinable!(user_mention -> comment (comment_id));
 joinable!(user_mention -> user_ (recipient_id));
 
 allow_tables_to_appear_in_same_query!(
+  activity,
   category,
   comment,
   comment_like,

server/src/settings.rs

@@ -1,10 +1,7 @@
 use config::{Config, ConfigError, Environment, File};
 use failure::Error;
 use serde::Deserialize;
-use std::env;
-use std::fs;
-use std::net::IpAddr;
-use std::sync::RwLock;
+use std::{env, fs, net::IpAddr, sync::RwLock};
 
 static CONFIG_FILE_DEFAULTS: &str = "config/defaults.hjson";
 static CONFIG_FILE: &str = "config/config.hjson";
@@ -20,7 +17,7 @@ pub struct Settings {
   pub front_end_dir: String,
   pub rate_limit: RateLimitConfig,
   pub email: Option<EmailConfig>,
-  pub federation_enabled: bool,
+  pub federation: Federation,
 }
 
 #[derive(Debug, Deserialize, Clone)]
@@ -60,6 +57,13 @@ pub struct Database {
   pub pool_size: u32,
 }
 
+#[derive(Debug, Deserialize, Clone)]
+pub struct Federation {
+  pub enabled: bool,
+  pub tls_enabled: bool,
+  pub instance_whitelist: String,
+}
+
 lazy_static! {
   static ref SETTINGS: RwLock<Settings> = RwLock::new(match Settings::init() {
     Ok(c) => c,

server/src/websocket/mod.rs

@@ -2,16 +2,20 @@ pub mod server;
 
 use crate::ConnectionId;
 use actix::prelude::*;
-use diesel::r2d2::{ConnectionManager, Pool};
-use diesel::PgConnection;
+use diesel::{
+  r2d2::{ConnectionManager, Pool},
+  PgConnection,
+};
 use failure::Error;
 use log::{error, info};
 use rand::{rngs::ThreadRng, Rng};
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
 use server::ChatServer;
-use std::collections::{HashMap, HashSet};
-use std::str::FromStr;
+use std::{
+  collections::{HashMap, HashSet},
+  str::FromStr,
+};
 
 #[derive(EnumString, ToString, Debug, Clone)]
 pub enum UserOperation {

server/src/websocket/server.rs

@@ -3,15 +3,16 @@
 //! room through `ChatServer`.
 
 use super::*;
-use crate::api::comment::*;
-use crate::api::community::*;
-use crate::api::post::*;
-use crate::api::site::*;
-use crate::api::user::*;
-use crate::api::*;
-use crate::rate_limit::RateLimit;
-use crate::websocket::UserOperation;
-use crate::{CommunityId, ConnectionId, IPAddr, PostId, UserId};
+use crate::{
+  api::{comment::*, community::*, post::*, site::*, user::*, *},
+  rate_limit::RateLimit,
+  websocket::UserOperation,
+  CommunityId,
+  ConnectionId,
+  IPAddr,
+  PostId,
+  UserId,
+};
 
 /// Chat server sends this messages to session
 #[derive(Message)]
@@ -940,7 +941,7 @@ impl Handler<Connect> for ChatServer {
       id,
       SessionInfo {
         addr: msg.addr,
-        ip: msg.ip.to_owned(),
+        ip: msg.ip,
       },
     );
 

ui/.eslintignore

@@ -1,2 +1,3 @@
 fuse.js
 translation_report.ts
+src/api_tests

ui/.gitignore

@@ -6,14 +6,11 @@ _site
 .git
 build
 .build
-.git
-.history
 .idea
 .jshintrc
 .nyc_output
 .sass-cache
 .vscode
-build
 coverage
 jsconfig.json
 Gemfile.lock

ui/jest.config.js

@@ -0,0 +1,10 @@
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  testTimeout: 30000,
+  globals: {
+    'ts-jest': {
+      diagnostics: false,
+    },
+  },
+};

ui/package.json

@@ -6,6 +6,7 @@
   "license": "AGPL-3.0-or-later",
   "main": "index.js",
   "scripts": {
+    "api-test": "jest src/api_tests/api.spec.ts",
     "build": "node fuse prod",
     "lint": "tsc --noEmit && eslint --report-unused-disable-directives --ext .js,.ts,.tsx src",
     "prebuild": "node generate_translations.js",
@@ -18,7 +19,7 @@
     "@types/autosize": "^3.0.6",
     "@types/js-cookie": "^2.2.6",
     "@types/jwt-decode": "^2.2.1",
-    "@types/markdown-it": "^10.0.0",
+    "@types/markdown-it": "^0.0.9",
     "@types/markdown-it-container": "^2.0.2",
     "@types/node": "^13.11.1",
     "autosize": "^4.0.2",
@@ -38,6 +39,7 @@
     "markdown-it-emoji": "^1.4.0",
     "mobius1-selectr": "^2.4.13",
     "moment": "^2.24.0",
+    "node-fetch": "^2.6.0",
     "prettier": "^2.0.4",
     "reconnecting-websocket": "^4.4.0",
     "rxjs": "^6.5.5",
@@ -49,12 +51,16 @@
     "ws": "^7.2.3"
   },
   "devDependencies": {
+    "@types/jest": "^25.2.1",
+    "@types/node-fetch": "^2.5.6",
     "eslint": "^6.5.1",
     "eslint-plugin-inferno": "^7.14.3",
     "eslint-plugin-jane": "^7.2.1",
     "fuse-box": "^3.1.3",
+    "jest": "^25.4.0",
     "lint-staged": "^10.1.3",
     "sortpack": "^2.1.4",
+    "ts-jest": "^25.4.0",
     "ts-node": "^8.8.2",
     "ts-transform-classcat": "^1.0.0",
     "ts-transform-inferno": "^4.0.3",

ui/src/components/admin-settings.tsx

@@ -113,6 +113,9 @@ export class AdminSettings extends Component<any, AdminSettingsState> {
                 user={{
                   name: admin.name,
                   avatar: admin.avatar,
+                  id: admin.id,
+                  local: admin.local,
+                  actor_id: admin.actor_id,
                 }}
               />
             </li>
@@ -133,6 +136,9 @@ export class AdminSettings extends Component<any, AdminSettingsState> {
                 user={{
                   name: banned.name,
                   avatar: banned.avatar,
+                  id: banned.id,
+                  local: banned.local,
+                  actor_id: banned.actor_id,
                 }}
               />
             </li>

ui/src/components/comment-form.tsx

@@ -162,8 +162,9 @@ export class CommentForm extends Component<CommentFormProps, CommentFormState> {
               </button>
               {this.state.commentForm.content && (
                 <button
-                  className={`btn btn-sm mr-2 btn-secondary ${this.state
-                    .previewMode && 'active'}`}
+                  className={`btn btn-sm mr-2 btn-secondary ${
+                    this.state.previewMode && 'active'
+                  }`}
                   onClick={linkEvent(this, this.handlePreviewToggle)}
                 >
                   {i18n.t('preview')}

ui/src/components/comment-node.tsx

@@ -142,9 +142,11 @@ export class CommentNode extends Component<CommentNodeProps, CommentNodeState> {
           }
         >
           <div
-            class={`${!this.props.noIndent &&
+            class={`${
+              !this.props.noIndent &&
               this.props.node.comment.parent_id &&
-              'ml-2'}`}
+              'ml-2'
+            }`}
           >
             <div class="d-flex flex-wrap align-items-center mb-1 mt-1 text-muted small">
               <span class="mr-2">
@@ -152,6 +154,9 @@ export class CommentNode extends Component<CommentNodeProps, CommentNodeState> {
                   user={{
                     name: node.comment.creator_name,
                     avatar: node.comment.creator_avatar,
+                    id: node.comment.creator_id,
+                    local: node.comment.creator_local,
+                    actor_id: node.comment.creator_actor_id,
                   }}
                 />
               </span>
@@ -249,8 +254,9 @@ export class CommentNode extends Component<CommentNodeProps, CommentNodeState> {
                         this.loadingIcon
                       ) : (
                         <svg
-                          class={`icon icon-inline ${node.comment.read &&
-                            'text-success'}`}
+                          class={`icon icon-inline ${
+                            node.comment.read && 'text-success'
+                          }`}
                         >
                           <use xlinkHref="#icon-check"></use>
                         </svg>
@@ -302,8 +308,9 @@ export class CommentNode extends Component<CommentNodeProps, CommentNodeState> {
                           this.loadingIcon
                         ) : (
                           <svg
-                            class={`icon icon-inline ${node.comment.saved &&
-                              'text-warning'}`}
+                            class={`icon icon-inline ${
+                              node.comment.saved && 'text-warning'
+                            }`}
                           >
                             <use xlinkHref="#icon-star"></use>
                           </svg>
@@ -350,8 +357,9 @@ export class CommentNode extends Component<CommentNodeProps, CommentNodeState> {
                             data-tippy-content={i18n.t('view_source')}
                           >
                             <svg
-                              class={`icon icon-inline ${this.state
-                                .viewSource && 'text-success'}`}
+                              class={`icon icon-inline ${
+                                this.state.viewSource && 'text-success'
+                              }`}
                             >
                               <use xlinkHref="#icon-file-text"></use>
                             </svg>
@@ -380,8 +388,9 @@ export class CommentNode extends Component<CommentNodeProps, CommentNodeState> {
                                 }
                               >
                                 <svg
-                                  class={`icon icon-inline ${node.comment
-                                    .deleted && 'text-danger'}`}
+                                  class={`icon icon-inline ${
+                                    node.comment.deleted && 'text-danger'
+                                  }`}
                                 >
                                   <use xlinkHref="#icon-trash"></use>
                                 </svg>

ui/src/components/communities.tsx

@@ -14,6 +14,7 @@ import {
 } from '../interfaces';
 import { WebSocketService } from '../services';
 import { wsJsonToRes, toast } from '../utils';
+import { CommunityLink } from './community-link';
 import { i18n } from '../i18next';
 
 declare const Sortable: any;
@@ -104,9 +105,7 @@ export class Communities extends Component<any, CommunitiesState> {
                   {this.state.communities.map(community => (
                     <tr>
                       <td>
-                        <Link to={`/c/${community.name}`}>
-                          {community.name}
-                        </Link>
+                        <CommunityLink community={community} />
                       </td>
                       <td class="d-none d-lg-table-cell">{community.title}</td>
                       <td>{community.category_name}</td>

ui/src/components/community-link.tsx

@@ -0,0 +1,38 @@
+import { Component } from 'inferno';
+import { Link } from 'inferno-router';
+import { Community } from '../interfaces';
+import { hostname } from '../utils';
+
+interface CommunityOther {
+  name: string;
+  id?: number; // Necessary if its federated
+  local?: boolean;
+  actor_id?: string;
+}
+
+interface CommunityLinkProps {
+  community: Community | CommunityOther;
+  realLink?: boolean;
+}
+
+export class CommunityLink extends Component<CommunityLinkProps, any> {
+  constructor(props: any, context: any) {
+    super(props, context);
+  }
+
+  render() {
+    let community = this.props.community;
+    let name_: string, link: string;
+    let local = community.local == null ? true : community.local;
+    if (local) {
+      name_ = community.name;
+      link = `/c/${community.name}`;
+    } else {
+      name_ = `${community.name}@${hostname(community.actor_id)}`;
+      link = !this.props.realLink
+        ? `/community/${community.id}`
+        : community.actor_id;
+    }
+    return <Link to={link}>{name_}</Link>;
+  }
+}

ui/src/components/community.tsx

@@ -80,6 +80,11 @@ export class Community extends Component<any, State> {
       removed: null,
       nsfw: false,
       deleted: null,
+      local: null,
+      actor_id: null,
+      last_refreshed_at: null,
+      creator_actor_id: null,
+      creator_local: null,
     },
     moderators: [],
     admins: [],

ui/src/components/main.tsx

@@ -34,6 +34,7 @@ import { ListingTypeSelect } from './listing-type-select';
 import { DataTypeSelect } from './data-type-select';
 import { SiteForm } from './site-form';
 import { UserListing } from './user-listing';
+import { CommunityLink } from './community-link';
 import {
   wsJsonToRes,
   repoUrl,
@@ -190,9 +191,14 @@ export class Main extends Component<any, MainState> {
                       <ul class="list-inline">
                         {this.state.subscribedCommunities.map(community => (
                           <li class="list-inline-item">
-                            <Link to={`/c/${community.community_name}`}>
-                              {community.community_name}
-                            </Link>
+                            <CommunityLink
+                              community={{
+                                name: community.community_name,
+                                id: community.community_id,
+                                local: community.community_local,
+                                actor_id: community.community_actor_id,
+                              }}
+                            />
                           </li>
                         ))}
                       </ul>
@@ -228,7 +234,7 @@ export class Main extends Component<any, MainState> {
         <ul class="list-inline">
           {this.state.trendingCommunities.map(community => (
             <li class="list-inline-item">
-              <Link to={`/c/${community.name}`}>{community.name}</Link>
+              <CommunityLink community={community} />
             </li>
           ))}
         </ul>
@@ -319,6 +325,9 @@ export class Main extends Component<any, MainState> {
                     user={{
                       name: admin.name,
                       avatar: admin.avatar,
+                      local: admin.local,
+                      actor_id: admin.actor_id,
+                      id: admin.id,
                     }}
                   />
                 </li>

ui/src/components/navbar.tsx

@@ -381,7 +381,7 @@ export class Navbar extends Component<any, NavbarState> {
 
   requestNotificationPermission() {
     if (UserService.Instance.user) {
-      document.addEventListener('DOMContentLoaded', function() {
+      document.addEventListener('DOMContentLoaded', function () {
         if (!Notification) {
           toast(i18n.t('notifications_error'), 'danger');
           return;