crates/apub/src/objects/community.rs

   1 use crate::{
   2   extensions::{context::lemmy_context, group_extensions::GroupExtension},
   3   fetcher::person::get_or_fetch_and_upsert_person,
   4   objects::{
   5     check_object_domain,
   6     create_tombstone,
   7     get_object_from_apub,
   8     get_source_markdown_value,
   9     set_content_and_source,
  10     FromApub,
  11     FromApubToForm,
  12     ToApub,
  13   },
  14   ActorType,
  15   GroupExt,
  16 };
  17 use activitystreams::{
  18   actor::{kind::GroupType, ApActor, Endpoints, Group},
  19   base::BaseExt,
  20   object::{ApObject, Image, Tombstone},
  21   prelude::*,
  22 };
  23 use activitystreams_ext::Ext2;
  24 use anyhow::Context;
  25 use lemmy_api_structs::blocking;
  26 use lemmy_db_queries::DbPool;
  27 use lemmy_db_schema::{
  28   naive_now,
  29   source::community::{Community, CommunityForm},
  30 };
  31 use lemmy_db_views_actor::community_moderator_view::CommunityModeratorView;
  32 use lemmy_utils::{
  33   location_info,
  34   utils::{check_slurs, check_slurs_opt, convert_datetime},
  35   LemmyError,
  36 };
  37 use lemmy_websocket::LemmyContext;
  38 use url::Url;
  39
  40 #[async_trait::async_trait(?Send)]
  41 impl ToApub for Community {
  42   type ApubType = GroupExt;
  43
  44   async fn to_apub(&self, pool: &DbPool) -> Result<GroupExt, LemmyError> {
  45     // The attributed to, is an ordered vector with the creator actor_ids first,
  46     // then the rest of the moderators
  47     // TODO Technically the instance admins can mod the community, but lets
  48     // ignore that for now
  49     let id = self.id;
  50     let moderators = blocking(pool, move |conn| {
  51       CommunityModeratorView::for_community(&conn, id)
  52     })
  53     .await??;
  54     let moderators: Vec<Url> = moderators
  55       .into_iter()
  56       .map(|m| m.moderator.actor_id.into_inner())
  57       .collect();
  58
  59     let mut group = ApObject::new(Group::new());
  60     group
  61       .set_many_contexts(lemmy_context()?)
  62       .set_id(self.actor_id.to_owned().into())
  63       .set_name(self.title.to_owned())
  64       .set_published(convert_datetime(self.published))
  65       .set_many_attributed_tos(moderators);
  66
  67     if let Some(u) = self.updated.to_owned() {
  68       group.set_updated(convert_datetime(u));
  69     }
  70     if let Some(d) = self.description.to_owned() {
  71       set_content_and_source(&mut group, &d)?;
  72     }
  73
  74     if let Some(icon_url) = &self.icon {
  75       let mut image = Image::new();
  76       image.set_url::<Url>(icon_url.to_owned().into());
  77       group.set_icon(image.into_any_base()?);
  78     }
  79
  80     if let Some(banner_url) = &self.banner {
  81       let mut image = Image::new();
  82       image.set_url::<Url>(banner_url.to_owned().into());
  83       group.set_image(image.into_any_base()?);
  84     }
  85
  86     let mut ap_actor = ApActor::new(self.inbox_url.clone().into(), group);
  87     ap_actor
  88       .set_preferred_username(self.name.to_owned())
  89       .set_outbox(self.get_outbox_url()?)
  90       .set_followers(self.followers_url.clone().into())
  91       .set_endpoints(Endpoints {
  92         shared_inbox: Some(self.get_shared_inbox_or_inbox_url()),
  93         ..Default::default()
  94       });
  95
  96     Ok(Ext2::new(
  97       ap_actor,
  98       GroupExtension::new(self.nsfw)?,
  99       self.get_public_key_ext()?,
 100     ))
 101   }
 102
 103   fn to_tombstone(&self) -> Result<Tombstone, LemmyError> {
 104     create_tombstone(
 105       self.deleted,
 106       self.actor_id.to_owned().into(),
 107       self.updated,
 108       GroupType::Group,
 109     )
 110   }
 111 }
 112
 113 #[async_trait::async_trait(?Send)]
 114 impl FromApub for Community {
 115   type ApubType = GroupExt;
 116
 117   /// Converts a `Group` to `Community`.
 118   async fn from_apub(
 119     group: &GroupExt,
 120     context: &LemmyContext,
 121     expected_domain: Url,
 122     request_counter: &mut i32,
 123   ) -> Result<Community, LemmyError> {
 124     get_object_from_apub(group, context, expected_domain, request_counter).await
 125   }
 126 }
 127
 128 #[async_trait::async_trait(?Send)]
 129 impl FromApubToForm<GroupExt> for CommunityForm {
 130   async fn from_apub(
 131     group: &GroupExt,
 132     context: &LemmyContext,
 133     expected_domain: Url,
 134     request_counter: &mut i32,
 135   ) -> Result<Self, LemmyError> {
 136     let creator_and_moderator_uris = group.inner.attributed_to().context(location_info!())?;
 137     let creator_uri = creator_and_moderator_uris
 138       .as_many()
 139       .context(location_info!())?
 140       .iter()
 141       .next()
 142       .context(location_info!())?
 143       .as_xsd_any_uri()
 144       .context(location_info!())?;
 145
 146     let creator = get_or_fetch_and_upsert_person(creator_uri, context, request_counter).await?;
 147     let name = group
 148       .inner
 149       .preferred_username()
 150       .context(location_info!())?
 151       .to_string();
 152     let title = group
 153       .inner
 154       .name()
 155       .context(location_info!())?
 156       .as_one()
 157       .context(location_info!())?
 158       .as_xsd_string()
 159       .context(location_info!())?
 160       .to_string();
 161
 162     let description = get_source_markdown_value(group)?;
 163
 164     check_slurs(&name)?;
 165     check_slurs(&title)?;
 166     check_slurs_opt(&description)?;
 167
 168     let icon = match group.icon() {
 169       Some(any_image) => Some(
 170         Image::from_any_base(any_image.as_one().context(location_info!())?.clone())
 171           .context(location_info!())?
 172           .context(location_info!())?
 173           .url()
 174           .context(location_info!())?
 175           .as_single_xsd_any_uri()
 176           .map(|u| u.to_owned().into()),
 177       ),
 178       None => None,
 179     };
 180     let banner = match group.image() {
 181       Some(any_image) => Some(
 182         Image::from_any_base(any_image.as_one().context(location_info!())?.clone())
 183           .context(location_info!())?
 184           .context(location_info!())?
 185           .url()
 186           .context(location_info!())?
 187           .as_single_xsd_any_uri()
 188           .map(|u| u.to_owned().into()),
 189       ),
 190       None => None,
 191     };
 192     let shared_inbox = group
 193       .inner
 194       .endpoints()?
 195       .map(|e| e.shared_inbox)
 196       .flatten()
 197       .map(|s| s.to_owned().into());
 198
 199     Ok(CommunityForm {
 200       name,
 201       title,
 202       description,
 203       creator_id: creator.id,
 204       removed: None,
 205       published: group.inner.published().map(|u| u.to_owned().naive_local()),
 206       updated: group.inner.updated().map(|u| u.to_owned().naive_local()),
 207       deleted: None,
 208       nsfw: Some(group.ext_one.sensitive.unwrap_or(false)),
 209       actor_id: Some(check_object_domain(group, expected_domain)?),
 210       local: Some(false),
 211       private_key: None,
 212       public_key: Some(group.ext_two.to_owned().public_key.public_key_pem),
 213       last_refreshed_at: Some(naive_now()),
 214       icon,
 215       banner,
 216       followers_url: Some(
 217         group
 218           .inner
 219           .followers()?
 220           .context(location_info!())?
 221           .to_owned()
 222           .into(),
 223       ),
 224       inbox_url: Some(group.inner.inbox()?.to_owned().into()),
 225       shared_inbox_url: Some(shared_inbox),
 226     })
 227   }
 228 }