mirror of
https://github.com/LemmyNet/lemmy.git
synced 2024-12-02 17:21:22 +00:00
135 lines
4.5 KiB
Rust
135 lines
4.5 KiB
Rust
use crate::{
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activities::{
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community::announce::AnnouncableActivities,
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generate_activity_id,
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verify_activity,
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verify_mod_action,
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verify_person_in_community,
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CreateOrUpdateType,
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},
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activity_queue::send_to_community_new,
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extensions::context::lemmy_context,
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fetcher::object_id::ObjectId,
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objects::{post::Page, FromApub, ToApub},
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ActorType,
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};
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use activitystreams::{base::AnyBase, primitives::OneOrMany, unparsed::Unparsed};
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use anyhow::anyhow;
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use lemmy_api_common::blocking;
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use lemmy_apub_lib::{
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values::PublicUrl,
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verify_domains_match,
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verify_urls_match,
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ActivityFields,
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ActivityHandler,
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};
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use lemmy_db_queries::Crud;
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use lemmy_db_schema::source::{community::Community, person::Person, post::Post};
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use lemmy_utils::LemmyError;
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use lemmy_websocket::{send::send_post_ws_message, LemmyContext, UserOperationCrud};
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use serde::{Deserialize, Serialize};
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use url::Url;
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#[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
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#[serde(rename_all = "camelCase")]
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pub struct CreateOrUpdatePost {
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actor: ObjectId<Person>,
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to: [PublicUrl; 1],
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object: Page,
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cc: [ObjectId<Community>; 1],
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#[serde(rename = "type")]
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kind: CreateOrUpdateType,
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id: Url,
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#[serde(rename = "@context")]
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context: OneOrMany<AnyBase>,
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#[serde(flatten)]
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unparsed: Unparsed,
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}
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impl CreateOrUpdatePost {
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pub async fn send(
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post: &Post,
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actor: &Person,
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kind: CreateOrUpdateType,
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context: &LemmyContext,
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) -> Result<(), LemmyError> {
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let community_id = post.community_id;
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let community = blocking(context.pool(), move |conn| {
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Community::read(conn, community_id)
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})
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.await??;
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let id = generate_activity_id(
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kind.clone(),
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&context.settings().get_protocol_and_hostname(),
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)?;
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let create_or_update = CreateOrUpdatePost {
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actor: ObjectId::new(actor.actor_id()),
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to: [PublicUrl::Public],
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object: post.to_apub(context.pool()).await?,
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cc: [ObjectId::new(community.actor_id())],
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kind,
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id: id.clone(),
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context: lemmy_context(),
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unparsed: Default::default(),
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};
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let activity = AnnouncableActivities::CreateOrUpdatePost(Box::new(create_or_update));
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send_to_community_new(activity, &id, actor, &community, vec![], context).await
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}
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}
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#[async_trait::async_trait(?Send)]
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impl ActivityHandler for CreateOrUpdatePost {
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async fn verify(
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&self,
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context: &LemmyContext,
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request_counter: &mut i32,
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) -> Result<(), LemmyError> {
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verify_activity(self, &context.settings())?;
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let community = self.cc[0].dereference(context, request_counter).await?;
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verify_person_in_community(&self.actor, &self.cc[0], context, request_counter).await?;
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match self.kind {
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CreateOrUpdateType::Create => {
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verify_domains_match(self.actor.inner(), self.object.id_unchecked())?;
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verify_urls_match(self.actor(), self.object.attributed_to.inner())?;
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// Check that the post isnt locked or stickied, as that isnt possible for newly created posts.
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// However, when fetching a remote post we generate a new create activity with the current
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// locked/stickied value, so this check may fail. So only check if its a local community,
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// because then we will definitely receive all create and update activities separately.
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let is_stickied_or_locked =
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self.object.stickied == Some(true) || self.object.comments_enabled == Some(false);
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if community.local && is_stickied_or_locked {
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return Err(anyhow!("New post cannot be stickied or locked").into());
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}
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}
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CreateOrUpdateType::Update => {
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let is_mod_action = self.object.is_mod_action(context.pool()).await?;
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if is_mod_action {
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verify_mod_action(&self.actor, self.cc[0].clone(), context).await?;
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} else {
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verify_domains_match(self.actor.inner(), self.object.id_unchecked())?;
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verify_urls_match(self.actor(), self.object.attributed_to.inner())?;
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}
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}
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}
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self.object.verify(context, request_counter).await?;
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Ok(())
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}
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async fn receive(
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self,
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context: &LemmyContext,
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request_counter: &mut i32,
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) -> Result<(), LemmyError> {
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let actor = self.actor.dereference(context, request_counter).await?;
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let post = Post::from_apub(&self.object, context, &actor.actor_id(), request_counter).await?;
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let notif_type = match self.kind {
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CreateOrUpdateType::Create => UserOperationCrud::CreatePost,
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CreateOrUpdateType::Update => UserOperationCrud::EditPost,
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};
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send_post_ws_message(post.id, notif_type, None, None, context).await?;
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Ok(())
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}
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}
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