2020-10-12 14:10:09 +00:00
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use crate::{
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2021-10-06 20:20:05 +00:00
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check_is_apub_id_valid,
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context::lemmy_context,
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2021-09-25 15:44:52 +00:00
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fetcher::community::{fetch_community_outbox, update_community_mods},
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2021-03-08 13:40:28 +00:00
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generate_moderators_url,
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2021-10-06 20:20:05 +00:00
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generate_outbox_url,
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2021-08-12 12:48:09 +00:00
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objects::{create_tombstone, FromApub, ImageObject, Source, ToApub},
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2021-10-06 20:20:05 +00:00
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CommunityType,
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2020-10-12 14:10:09 +00:00
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};
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use activitystreams::{
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actor::{kind::GroupType, Endpoints},
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base::AnyBase,
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object::{kind::ImageType, Tombstone},
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primitives::OneOrMany,
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unparsed::Unparsed,
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2020-10-12 14:10:09 +00:00
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};
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use chrono::{DateTime, FixedOffset};
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2021-10-06 20:20:05 +00:00
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use itertools::Itertools;
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2021-03-25 19:19:40 +00:00
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use lemmy_api_common::blocking;
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use lemmy_apub_lib::{
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signatures::PublicKey,
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traits::ActorType,
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values::{MediaTypeHtml, MediaTypeMarkdown},
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2021-10-06 20:20:05 +00:00
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verify::verify_domains_match,
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2021-08-12 12:48:09 +00:00
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};
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2021-09-25 15:44:52 +00:00
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use lemmy_db_queries::{source::community::Community_, DbPool};
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2020-12-21 12:28:12 +00:00
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use lemmy_db_schema::{
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naive_now,
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2020-12-13 17:04:42 +00:00
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source::community::{Community, CommunityForm},
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2020-10-12 14:10:09 +00:00
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};
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2021-10-06 20:20:05 +00:00
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use lemmy_db_views_actor::community_follower_view::CommunityFollowerView;
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2020-10-12 14:10:09 +00:00
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use lemmy_utils::{
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2021-09-22 15:57:09 +00:00
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settings::structs::Settings,
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2021-08-12 12:48:09 +00:00
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utils::{check_slurs, check_slurs_opt, convert_datetime, markdown_to_html},
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2020-10-12 14:10:09 +00:00
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LemmyError,
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};
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use lemmy_websocket::LemmyContext;
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2021-08-12 12:48:09 +00:00
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use serde::{Deserialize, Serialize};
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use serde_with::skip_serializing_none;
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2020-10-12 14:10:09 +00:00
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use url::Url;
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2021-08-12 12:48:09 +00:00
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#[skip_serializing_none]
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#[derive(Clone, Debug, Deserialize, Serialize)]
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#[serde(rename_all = "camelCase")]
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pub struct Group {
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#[serde(rename = "@context")]
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context: OneOrMany<AnyBase>,
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#[serde(rename = "type")]
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kind: GroupType,
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id: Url,
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/// username, set at account creation and can never be changed
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preferred_username: String,
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/// title (can be changed at any time)
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name: String,
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content: Option<String>,
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media_type: Option<MediaTypeHtml>,
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source: Option<Source>,
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icon: Option<ImageObject>,
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/// banner
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image: Option<ImageObject>,
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// lemmy extension
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sensitive: Option<bool>,
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// lemmy extension
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pub(crate) moderators: Option<Url>,
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inbox: Url,
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pub(crate) outbox: Url,
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followers: Url,
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endpoints: Endpoints<Url>,
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public_key: PublicKey,
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published: DateTime<FixedOffset>,
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updated: Option<DateTime<FixedOffset>>,
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#[serde(flatten)]
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unparsed: Unparsed,
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}
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impl Group {
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pub(crate) fn id(&self, expected_domain: &Url) -> Result<&Url, LemmyError> {
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verify_domains_match(&self.id, expected_domain)?;
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Ok(&self.id)
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}
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pub(crate) async fn from_apub_to_form(
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group: &Group,
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expected_domain: &Url,
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settings: &Settings,
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) -> Result<CommunityForm, LemmyError> {
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let actor_id = Some(group.id(expected_domain)?.clone().into());
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let name = group.preferred_username.clone();
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let title = group.name.clone();
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let description = group.source.clone().map(|s| s.content);
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let shared_inbox = group.endpoints.shared_inbox.clone().map(|s| s.into());
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2020-10-12 14:10:09 +00:00
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2021-09-22 15:57:09 +00:00
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let slur_regex = &settings.slur_regex();
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check_slurs(&name, slur_regex)?;
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check_slurs(&title, slur_regex)?;
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check_slurs_opt(&description, slur_regex)?;
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2020-10-12 14:10:09 +00:00
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Ok(CommunityForm {
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name,
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title,
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description,
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removed: None,
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published: Some(group.published.naive_local()),
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updated: group.updated.map(|u| u.naive_local()),
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deleted: None,
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nsfw: Some(group.sensitive.unwrap_or(false)),
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actor_id,
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local: Some(false),
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private_key: None,
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public_key: Some(group.public_key.public_key_pem.clone()),
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last_refreshed_at: Some(naive_now()),
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icon: Some(group.icon.clone().map(|i| i.url.into())),
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banner: Some(group.image.clone().map(|i| i.url.into())),
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followers_url: Some(group.followers.clone().into()),
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inbox_url: Some(group.inbox.clone().into()),
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shared_inbox_url: Some(shared_inbox),
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})
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}
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}
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2020-10-12 14:10:09 +00:00
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2021-08-12 12:48:09 +00:00
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#[async_trait::async_trait(?Send)]
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impl ToApub for Community {
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type ApubType = Group;
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async fn to_apub(&self, _pool: &DbPool) -> Result<Group, LemmyError> {
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let source = self.description.clone().map(|bio| Source {
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content: bio,
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media_type: MediaTypeMarkdown::Markdown,
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});
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let icon = self.icon.clone().map(|url| ImageObject {
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kind: ImageType::Image,
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url: url.into(),
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});
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let image = self.banner.clone().map(|url| ImageObject {
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kind: ImageType::Image,
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url: url.into(),
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});
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let group = Group {
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context: lemmy_context(),
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kind: GroupType::Group,
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id: self.actor_id(),
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preferred_username: self.name.clone(),
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name: self.title.clone(),
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content: self.description.as_ref().map(|b| markdown_to_html(b)),
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media_type: self.description.as_ref().map(|_| MediaTypeHtml::Html),
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source,
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icon,
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image,
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sensitive: Some(self.nsfw),
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moderators: Some(generate_moderators_url(&self.actor_id)?.into()),
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inbox: self.inbox_url.clone().into(),
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outbox: generate_outbox_url(&self.actor_id)?.into(),
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followers: self.followers_url.clone().into(),
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endpoints: Endpoints {
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shared_inbox: self.shared_inbox_url.clone().map(|s| s.into()),
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..Default::default()
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},
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public_key: self.get_public_key()?,
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published: convert_datetime(self.published),
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updated: self.updated.map(convert_datetime),
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unparsed: Default::default(),
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};
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Ok(group)
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}
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fn to_tombstone(&self) -> Result<Tombstone, LemmyError> {
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2021-01-27 16:42:23 +00:00
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create_tombstone(
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self.deleted,
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self.actor_id.to_owned().into(),
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self.updated,
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GroupType::Group,
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)
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2020-10-12 14:10:09 +00:00
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}
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}
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2020-12-08 17:38:48 +00:00
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2020-10-12 14:10:09 +00:00
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#[async_trait::async_trait(?Send)]
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2020-12-08 17:38:48 +00:00
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impl FromApub for Community {
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type ApubType = Group;
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2020-10-12 14:10:09 +00:00
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2021-03-05 13:45:30 +00:00
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/// Converts a `Group` to `Community`, inserts it into the database and updates moderators.
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2020-12-08 17:38:48 +00:00
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async fn from_apub(
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group: &Group,
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2020-12-08 17:38:48 +00:00
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context: &LemmyContext,
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expected_domain: &Url,
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2020-12-08 17:38:48 +00:00
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request_counter: &mut i32,
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) -> Result<Community, LemmyError> {
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let form = Group::from_apub_to_form(group, expected_domain, &context.settings()).await?;
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2020-10-12 14:10:09 +00:00
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2021-08-12 12:48:09 +00:00
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let community = blocking(context.pool(), move |conn| Community::upsert(conn, &form)).await??;
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2021-09-25 15:44:52 +00:00
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update_community_mods(group, &community, context, request_counter).await?;
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// TODO: doing this unconditionally might cause infinite loop for some reason
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fetch_community_outbox(context, &group.outbox, request_counter).await?;
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Ok(community)
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2020-10-12 14:10:09 +00:00
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}
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}
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2021-10-06 20:20:05 +00:00
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#[async_trait::async_trait(?Send)]
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impl CommunityType for Community {
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fn followers_url(&self) -> Url {
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self.followers_url.clone().into()
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}
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/// For a given community, returns the inboxes of all followers.
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async fn get_follower_inboxes(
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&self,
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pool: &DbPool,
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settings: &Settings,
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) -> Result<Vec<Url>, LemmyError> {
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let id = self.id;
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let follows = blocking(pool, move |conn| {
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CommunityFollowerView::for_community(conn, id)
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})
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.await??;
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let inboxes = follows
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.into_iter()
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.filter(|f| !f.follower.local)
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.map(|f| f.follower.shared_inbox_url.unwrap_or(f.follower.inbox_url))
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.map(|i| i.into_inner())
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.unique()
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// Don't send to blocked instances
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.filter(|inbox| check_is_apub_id_valid(inbox, false, settings).is_ok())
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.collect();
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Ok(inboxes)
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}
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}
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