crates/apub/src/objects/community.rs

   1 use crate::{
   2   extensions::{context::lemmy_context, group_extensions::GroupExtension},
   3   fetcher::user::get_or_fetch_and_upsert_user,
   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_db_queries::DbPool;
  26 use lemmy_db_schema::{
  27   naive_now,
  28   source::community::{Community, CommunityForm},
  29 };
  30 use lemmy_db_views_actor::community_moderator_view::CommunityModeratorView;
  31 use lemmy_structs::blocking;
  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<String> = moderators
  55       .into_iter()
  56       .map(|m| m.moderator.actor_id)
  57       .collect();
  58
  59     let mut group = ApObject::new(Group::new());
  60     group
  61       .set_many_contexts(lemmy_context()?)
  62       .set_id(Url::parse(&self.actor_id)?)
  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::parse(icon_url)?);
  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::parse(banner_url)?);
  83       group.set_image(image.into_any_base()?);
  84     }
  85
  86     let mut ap_actor = ApActor::new(self.get_inbox_url()?, group);
  87     ap_actor
  88       .set_preferred_username(self.name.to_owned())
  89       .set_outbox(self.get_outbox_url()?)
  90       .set_followers(self.get_followers_url()?)
  91       .set_endpoints(Endpoints {
  92         shared_inbox: Some(self.get_shared_inbox_url()?),
  93         ..Default::default()
  94       });
  95
  96     let nsfw = self.nsfw;
  97     let category_id = self.category_id;
  98     let group_extension = blocking(pool, move |conn| {
  99       GroupExtension::new(conn, category_id, nsfw)
 100     })
 101     .await??;
 102
 103     Ok(Ext2::new(
 104       ap_actor,
 105       group_extension,
 106       self.get_public_key_ext()?,
 107     ))
 108   }
 109
 110   fn to_tombstone(&self) -> Result<Tombstone, LemmyError> {
 111     create_tombstone(self.deleted, &self.actor_id, self.updated, GroupType::Group)
 112   }
 113 }
 114
 115 #[async_trait::async_trait(?Send)]
 116 impl FromApub for Community {
 117   type ApubType = GroupExt;
 118
 119   /// Converts a `Group` to `Community`.
 120   async fn from_apub(
 121     group: &GroupExt,
 122     context: &LemmyContext,
 123     expected_domain: Url,
 124     request_counter: &mut i32,
 125   ) -> Result<Community, LemmyError> {
 126     get_object_from_apub(group, context, expected_domain, request_counter).await
 127   }
 128 }
 129
 130 #[async_trait::async_trait(?Send)]
 131 impl FromApubToForm<GroupExt> for CommunityForm {
 132   async fn from_apub(
 133     group: &GroupExt,
 134     context: &LemmyContext,
 135     expected_domain: Url,
 136     request_counter: &mut i32,
 137   ) -> Result<Self, LemmyError> {
 138     let creator_and_moderator_uris = group.inner.attributed_to().context(location_info!())?;
 139     let creator_uri = creator_and_moderator_uris
 140       .as_many()
 141       .context(location_info!())?
 142       .iter()
 143       .next()
 144       .context(location_info!())?
 145       .as_xsd_any_uri()
 146       .context(location_info!())?;
 147
 148     let creator = get_or_fetch_and_upsert_user(creator_uri, context, request_counter).await?;
 149     let name = group
 150       .inner
 151       .preferred_username()
 152       .context(location_info!())?
 153       .to_string();
 154     let title = group
 155       .inner
 156       .name()
 157       .context(location_info!())?
 158       .as_one()
 159       .context(location_info!())?
 160       .as_xsd_string()
 161       .context(location_info!())?
 162       .to_string();
 163
 164     let description = get_source_markdown_value(group)?;
 165
 166     check_slurs(&name)?;
 167     check_slurs(&title)?;
 168     check_slurs_opt(&description)?;
 169
 170     let icon = match group.icon() {
 171       Some(any_image) => Some(
 172         Image::from_any_base(any_image.as_one().context(location_info!())?.clone())
 173           .context(location_info!())?
 174           .context(location_info!())?
 175           .url()
 176           .context(location_info!())?
 177           .as_single_xsd_any_uri()
 178           .map(|u| u.to_string()),
 179       ),
 180       None => None,
 181     };
 182
 183     let banner = match group.image() {
 184       Some(any_image) => Some(
 185         Image::from_any_base(any_image.as_one().context(location_info!())?.clone())
 186           .context(location_info!())?
 187           .context(location_info!())?
 188           .url()
 189           .context(location_info!())?
 190           .as_single_xsd_any_uri()
 191           .map(|u| u.to_string()),
 192       ),
 193       None => None,
 194     };
 195
 196     Ok(CommunityForm {
 197       name,
 198       title,
 199       description,
 200       category_id: group.ext_one.category.identifier.parse::<i32>()?,
 201       creator_id: creator.id,
 202       removed: None,
 203       published: group.inner.published().map(|u| u.to_owned().naive_local()),
 204       updated: group.inner.updated().map(|u| u.to_owned().naive_local()),
 205       deleted: None,
 206       nsfw: group.ext_one.sensitive,
 207       actor_id: Some(check_object_domain(group, expected_domain)?),
 208       local: false,
 209       private_key: None,
 210       public_key: Some(group.ext_two.to_owned().public_key.public_key_pem),
 211       last_refreshed_at: Some(naive_now()),
 212       icon,
 213       banner,
 214     })
 215   }
 216 }