376 lines
8.6 KiB
Rust
376 lines
8.6 KiB
Rust
pub mod activities;
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pub mod comment;
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pub mod community;
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pub mod community_inbox;
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pub mod extensions;
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pub mod fetcher;
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pub mod post;
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pub mod private_message;
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pub mod shared_inbox;
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pub mod user;
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pub mod user_inbox;
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use crate::{
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apub::extensions::{
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group_extensions::GroupExtension,
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page_extension::PageExtension,
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signatures::{PublicKey, PublicKeyExtension},
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},
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convert_datetime,
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db::user::User_,
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request::{retry, RecvError},
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routes::webfinger::WebFingerResponse,
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DbPool,
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LemmyError,
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MentionData,
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Settings,
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};
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use activitystreams::object::Page;
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use activitystreams_ext::{Ext1, Ext2};
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use activitystreams_new::{
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activity::Follow,
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actor::{ApActor, Group, Person},
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object::Tombstone,
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prelude::*,
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};
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use actix_web::{body::Body, client::Client, HttpResponse};
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use chrono::NaiveDateTime;
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use log::debug;
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use serde::Serialize;
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use url::Url;
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type GroupExt = Ext2<ApActor<Group>, GroupExtension, PublicKeyExtension>;
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type PersonExt = Ext1<ApActor<Person>, PublicKeyExtension>;
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type PageExt = Ext1<Page, PageExtension>;
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pub static APUB_JSON_CONTENT_TYPE: &str = "application/activity+json";
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pub enum EndpointType {
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Community,
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User,
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Post,
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Comment,
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PrivateMessage,
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}
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/// Convert the data to json and turn it into an HTTP Response with the correct ActivityPub
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/// headers.
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fn create_apub_response<T>(data: &T) -> HttpResponse<Body>
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where
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T: Serialize,
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{
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HttpResponse::Ok()
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.content_type(APUB_JSON_CONTENT_TYPE)
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.json(data)
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}
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fn create_apub_tombstone_response<T>(data: &T) -> HttpResponse<Body>
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where
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T: Serialize,
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{
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HttpResponse::Gone()
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.content_type(APUB_JSON_CONTENT_TYPE)
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.json(data)
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}
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/// Generates the ActivityPub ID for a given object type and ID.
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pub fn make_apub_endpoint(endpoint_type: EndpointType, name: &str) -> Url {
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let point = match endpoint_type {
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EndpointType::Community => "c",
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EndpointType::User => "u",
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EndpointType::Post => "post",
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EndpointType::Comment => "comment",
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EndpointType::PrivateMessage => "private_message",
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};
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Url::parse(&format!(
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"{}://{}/{}/{}",
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get_apub_protocol_string(),
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Settings::get().hostname,
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point,
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name
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))
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.unwrap()
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}
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pub fn get_apub_protocol_string() -> &'static str {
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if Settings::get().federation.tls_enabled {
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"https"
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} else {
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"http"
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}
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}
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// Checks if the ID has a valid format, correct scheme, and is in the allowed instance list.
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fn is_apub_id_valid(apub_id: &Url) -> bool {
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debug!("Checking {}", apub_id);
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if apub_id.scheme() != get_apub_protocol_string() {
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debug!("invalid scheme: {:?}", apub_id.scheme());
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return false;
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}
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let allowed_instances: Vec<String> = Settings::get()
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.federation
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.allowed_instances
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.split(',')
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.map(|d| d.to_string())
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.collect();
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match apub_id.domain() {
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Some(d) => {
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let contains = allowed_instances.contains(&d.to_owned());
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if !contains {
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debug!("{} not in {:?}", d, allowed_instances);
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}
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contains
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}
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None => {
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debug!("missing domain");
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false
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}
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}
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}
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#[async_trait::async_trait(?Send)]
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pub trait ToApub {
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type Response;
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async fn to_apub(&self, pool: &DbPool) -> Result<Self::Response, LemmyError>;
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fn to_tombstone(&self) -> Result<Tombstone, LemmyError>;
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}
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/// Updated is actually the deletion time
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fn create_tombstone(
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deleted: bool,
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object_id: &str,
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updated: Option<NaiveDateTime>,
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former_type: String,
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) -> Result<Tombstone, LemmyError> {
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if deleted {
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if let Some(updated) = updated {
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let mut tombstone = Tombstone::new();
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tombstone.set_id(object_id.parse()?);
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tombstone.set_former_type(former_type);
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tombstone.set_deleted(convert_datetime(updated).into());
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Ok(tombstone)
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} else {
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Err(format_err!("Cant convert to tombstone because updated time was None.").into())
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}
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} else {
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Err(format_err!("Cant convert object to tombstone if it wasnt deleted").into())
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}
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}
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#[async_trait::async_trait(?Send)]
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pub trait FromApub {
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type ApubType;
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async fn from_apub(
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apub: &mut Self::ApubType,
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client: &Client,
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pool: &DbPool,
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) -> Result<Self, LemmyError>
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where
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Self: Sized;
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}
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#[async_trait::async_trait(?Send)]
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pub trait ApubObjectType {
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async fn send_create(
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&self,
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creator: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_update(
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&self,
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creator: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_delete(
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&self,
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creator: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_undo_delete(
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&self,
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creator: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_remove(
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&self,
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mod_: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_undo_remove(
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&self,
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mod_: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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}
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#[async_trait::async_trait(?Send)]
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pub trait ApubLikeableType {
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async fn send_like(
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&self,
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creator: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_dislike(
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&self,
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creator: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_undo_like(
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&self,
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creator: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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}
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pub fn get_shared_inbox(actor_id: &str) -> String {
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let url = Url::parse(actor_id).unwrap();
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format!(
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"{}://{}{}/inbox",
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&url.scheme(),
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&url.host_str().unwrap(),
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if let Some(port) = url.port() {
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format!(":{}", port)
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} else {
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"".to_string()
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},
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)
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}
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#[async_trait::async_trait(?Send)]
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pub trait ActorType {
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fn actor_id(&self) -> String;
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fn public_key(&self) -> String;
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fn private_key(&self) -> String;
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// These two have default impls, since currently a community can't follow anything,
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// and a user can't be followed (yet)
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#[allow(unused_variables)]
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async fn send_follow(
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&self,
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follow_actor_id: &str,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_unfollow(
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&self,
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follow_actor_id: &str,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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#[allow(unused_variables)]
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async fn send_accept_follow(
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&self,
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follow: &Follow,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_delete(
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&self,
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creator: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_undo_delete(
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&self,
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creator: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_remove(
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&self,
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mod_: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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async fn send_undo_remove(
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&self,
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mod_: &User_,
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client: &Client,
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pool: &DbPool,
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) -> Result<(), LemmyError>;
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/// For a given community, returns the inboxes of all followers.
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async fn get_follower_inboxes(&self, pool: &DbPool) -> Result<Vec<String>, LemmyError>;
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// TODO move these to the db rows
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fn get_inbox_url(&self) -> String {
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format!("{}/inbox", &self.actor_id())
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}
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fn get_shared_inbox_url(&self) -> String {
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get_shared_inbox(&self.actor_id())
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}
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fn get_outbox_url(&self) -> String {
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format!("{}/outbox", &self.actor_id())
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}
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fn get_followers_url(&self) -> String {
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format!("{}/followers", &self.actor_id())
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}
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fn get_following_url(&self) -> String {
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format!("{}/following", &self.actor_id())
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}
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fn get_liked_url(&self) -> String {
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format!("{}/liked", &self.actor_id())
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}
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fn get_public_key_ext(&self) -> PublicKeyExtension {
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PublicKey {
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id: format!("{}#main-key", self.actor_id()),
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owner: self.actor_id(),
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public_key_pem: self.public_key(),
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}
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.to_ext()
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}
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}
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pub async fn fetch_webfinger_url(
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mention: &MentionData,
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client: &Client,
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) -> Result<String, LemmyError> {
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let fetch_url = format!(
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"{}://{}/.well-known/webfinger?resource=acct:{}@{}",
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get_apub_protocol_string(),
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mention.domain,
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mention.name,
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mention.domain
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);
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debug!("Fetching webfinger url: {}", &fetch_url);
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let mut response = retry(|| client.get(&fetch_url).send()).await?;
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let res: WebFingerResponse = response
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.json()
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.await
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.map_err(|e| RecvError(e.to_string()))?;
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let link = res
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.links
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.iter()
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.find(|l| l.type_.eq(&Some("application/activity+json".to_string())))
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.ok_or_else(|| format_err!("No application/activity+json link found."))?;
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link
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.href
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.to_owned()
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.ok_or_else(|| format_err!("No href found.").into())
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}
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