crates/apub/src/activities/following/accept.rs

   1 use crate::{
   2   activities::{
   3     following::follow::FollowCommunity,
   4     generate_activity_id,
   5     verify_activity,
   6     verify_community,
   7   },
   8   activity_queue::send_activity_new,
   9   extensions::context::lemmy_context,
  10   fetcher::{community::get_or_fetch_and_upsert_community, person::get_or_fetch_and_upsert_person},
  11   ActorType,
  12 };
  13 use activitystreams::{
  14   activity::kind::AcceptType,
  15   base::AnyBase,
  16   primitives::OneOrMany,
  17   unparsed::Unparsed,
  18 };
  19 use lemmy_api_common::blocking;
  20 use lemmy_apub_lib::{verify_urls_match, ActivityFields, ActivityHandler};
  21 use lemmy_db_queries::{ApubObject, Followable};
  22 use lemmy_db_schema::source::{
  23   community::{Community, CommunityFollower},
  24   person::Person,
  25 };
  26 use lemmy_utils::LemmyError;
  27 use lemmy_websocket::LemmyContext;
  28 use serde::{Deserialize, Serialize};
  29 use url::Url;
  30
  31 #[derive(Clone, Debug, Deserialize, Serialize, ActivityFields)]
  32 #[serde(rename_all = "camelCase")]
  33 pub struct AcceptFollowCommunity {
  34   actor: Url,
  35   to: Url,
  36   object: FollowCommunity,
  37   #[serde(rename = "type")]
  38   kind: AcceptType,
  39   id: Url,
  40   #[serde(rename = "@context")]
  41   context: OneOrMany<AnyBase>,
  42   #[serde(flatten)]
  43   unparsed: Unparsed,
  44 }
  45
  46 impl AcceptFollowCommunity {
  47   pub async fn send(follow: FollowCommunity, context: &LemmyContext) -> Result<(), LemmyError> {
  48     let community_id = follow.object.clone();
  49     let community = blocking(context.pool(), move |conn| {
  50       Community::read_from_apub_id(conn, &community_id.into())
  51     })
  52     .await??;
  53     let person_id = follow.actor().clone();
  54     let person = blocking(context.pool(), move |conn| {
  55       Person::read_from_apub_id(conn, &person_id.into())
  56     })
  57     .await??;
  58
  59     let accept = AcceptFollowCommunity {
  60       actor: community.actor_id(),
  61       to: person.actor_id(),
  62       object: follow,
  63       kind: AcceptType::Accept,
  64       id: generate_activity_id(AcceptType::Accept)?,
  65       context: lemmy_context(),
  66       unparsed: Default::default(),
  67     };
  68     let inbox = vec![person.inbox_url.into()];
  69     send_activity_new(context, &accept, &accept.id, &community, inbox, true).await
  70   }
  71 }
  72 /// Handle accepted follows
  73 #[async_trait::async_trait(?Send)]
  74 impl ActivityHandler for AcceptFollowCommunity {
  75   async fn verify(
  76     &self,
  77     context: &LemmyContext,
  78     request_counter: &mut i32,
  79   ) -> Result<(), LemmyError> {
  80     verify_activity(self)?;
  81     verify_urls_match(&self.to, self.object.actor())?;
  82     verify_urls_match(&self.actor, &self.object.to)?;
  83     verify_community(&self.actor, context, request_counter).await?;
  84     self.object.verify(context, request_counter).await?;
  85     Ok(())
  86   }
  87
  88   async fn receive(
  89     self,
  90     context: &LemmyContext,
  91     request_counter: &mut i32,
  92   ) -> Result<(), LemmyError> {
  93     let actor = get_or_fetch_and_upsert_community(&self.actor, context, request_counter).await?;
  94     let to = get_or_fetch_and_upsert_person(&self.to, context, request_counter).await?;
  95     // This will throw an error if no follow was requested
  96     blocking(context.pool(), move |conn| {
  97       CommunityFollower::follow_accepted(conn, actor.id, to.id)
  98     })
  99     .await??;
 100
 101     Ok(())
 102   }
 103 }