2 check_community_or_site_ban,
3 check_is_apub_id_valid,
4 fetcher::{community::get_or_fetch_and_upsert_community, person::get_or_fetch_and_upsert_person},
5 generate_moderators_url,
8 use lemmy_api_common::blocking;
9 use lemmy_apub_lib::{verify_domains_match, ActivityCommonFields};
10 use lemmy_db_queries::ApubObject;
11 use lemmy_db_schema::{
12 source::{community::Community, person::Person},
15 use lemmy_db_views_actor::community_view::CommunityView;
16 use lemmy_utils::LemmyError;
17 use lemmy_websocket::LemmyContext;
25 pub mod private_message;
30 /// Checks that the specified Url actually identifies a Person (by fetching it), and that the person
31 /// doesn't have a site ban.
32 async fn verify_person(
34 context: &LemmyContext,
35 request_counter: &mut i32,
36 ) -> Result<(), LemmyError> {
37 let person = get_or_fetch_and_upsert_person(person_id, context, request_counter).await?;
39 return Err(anyhow!("Person {} is banned", person_id).into());
44 /// Fetches the person and community to verify their type, then checks if person is banned from site
46 async fn verify_person_in_community(
49 context: &LemmyContext,
50 request_counter: &mut i32,
51 ) -> Result<Community, LemmyError> {
52 let person = get_or_fetch_and_upsert_person(person_id, context, request_counter).await?;
53 let mut cc_iter = cc.iter();
54 let community: Community = loop {
55 if let Some(cid) = cc_iter.next() {
56 if let Ok(c) = get_or_fetch_and_upsert_community(cid, context, request_counter).await {
60 return Err(anyhow!("No community found in cc").into());
63 check_community_or_site_ban(&person, community.id, context.pool()).await?;
67 /// Simply check that the url actually refers to a valid group.
68 async fn verify_community(
70 context: &LemmyContext,
71 request_counter: &mut i32,
72 ) -> Result<(), LemmyError> {
73 get_or_fetch_and_upsert_community(community_id, context, request_counter).await?;
77 fn verify_activity(common: &ActivityCommonFields) -> Result<(), LemmyError> {
78 check_is_apub_id_valid(&common.actor, false)?;
79 verify_domains_match(common.id_unchecked(), &common.actor)?;
83 async fn verify_mod_action(
86 context: &LemmyContext,
87 ) -> Result<(), LemmyError> {
88 let community = blocking(context.pool(), move |conn| {
89 Community::read_from_apub_id(conn, &activity_cc.into())
94 let actor_id: DbUrl = actor_id.clone().into();
95 let actor = blocking(context.pool(), move |conn| {
96 Person::read_from_apub_id(conn, &actor_id)
100 // Note: this will also return true for admins in addition to mods, but as we dont know about
101 // remote admins, it doesnt make any difference.
102 let community_id = community.id;
103 let actor_id = actor.id;
104 let is_mod_or_admin = blocking(context.pool(), move |conn| {
105 CommunityView::is_mod_or_admin(conn, actor_id, community_id)
108 if !is_mod_or_admin {
109 return Err(anyhow!("Not a mod").into());
115 /// For Add/Remove community moderator activities, check that the target field actually contains
116 /// /c/community/moderators. Any different values are unsupported.
117 fn verify_add_remove_moderator_target(target: &Url, community: Url) -> Result<(), LemmyError> {
118 if target != &generate_moderators_url(&community.into())?.into_inner() {
119 return Err(anyhow!("Unkown target url").into());