mirror of
https://github.com/LemmyNet/lemmy.git
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6f513793cb
* update activitypub-federation crate to 0.4.0 * fixes * apub compiles! * everything compiling! * almost done, federated follow failing * some test fixes * use release * add code back in
263 lines
7.9 KiB
Rust
263 lines
7.9 KiB
Rust
use crate::{
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check_apub_id_valid_with_strictness,
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fetch_local_site_data,
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objects::instance::fetch_instance_actor_for_object,
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protocol::{
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objects::{group::Group, Endpoints, LanguageTag},
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ImageObject,
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Source,
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},
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};
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use activitypub_federation::{
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config::Data,
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kinds::actor::GroupType,
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traits::{Actor, Object},
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};
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use chrono::NaiveDateTime;
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use itertools::Itertools;
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use lemmy_api_common::{
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context::LemmyContext,
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utils::{generate_featured_url, generate_moderators_url, generate_outbox_url},
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};
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use lemmy_db_schema::{
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source::{
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actor_language::CommunityLanguage,
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community::{Community, CommunityUpdateForm},
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},
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traits::{ApubActor, Crud},
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};
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use lemmy_db_views_actor::structs::CommunityFollowerView;
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use lemmy_utils::{
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error::LemmyError,
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utils::{markdown::markdown_to_html, time::convert_datetime},
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};
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use std::ops::Deref;
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use tracing::debug;
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use url::Url;
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#[derive(Clone, Debug)]
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pub struct ApubCommunity(Community);
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impl Deref for ApubCommunity {
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type Target = Community;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl From<Community> for ApubCommunity {
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fn from(c: Community) -> Self {
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ApubCommunity(c)
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}
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}
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#[async_trait::async_trait]
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impl Object for ApubCommunity {
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type DataType = LemmyContext;
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type Kind = Group;
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type Error = LemmyError;
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fn last_refreshed_at(&self) -> Option<NaiveDateTime> {
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Some(self.last_refreshed_at)
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}
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#[tracing::instrument(skip_all)]
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async fn read_from_id(
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object_id: Url,
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context: &Data<Self::DataType>,
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) -> Result<Option<Self>, LemmyError> {
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Ok(
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Community::read_from_apub_id(context.pool(), &object_id.into())
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.await?
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.map(Into::into),
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)
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}
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#[tracing::instrument(skip_all)]
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async fn delete(self, context: &Data<Self::DataType>) -> Result<(), LemmyError> {
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let form = CommunityUpdateForm::builder().deleted(Some(true)).build();
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Community::update(context.pool(), self.id, &form).await?;
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Ok(())
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}
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#[tracing::instrument(skip_all)]
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async fn into_json(self, data: &Data<Self::DataType>) -> Result<Group, LemmyError> {
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let community_id = self.id;
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let langs = CommunityLanguage::read(data.pool(), community_id).await?;
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let language = LanguageTag::new_multiple(langs, data.pool()).await?;
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let group = Group {
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kind: GroupType::Group,
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id: self.id().into(),
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preferred_username: self.name.clone(),
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name: Some(self.title.clone()),
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summary: self.description.as_ref().map(|b| markdown_to_html(b)),
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source: self.description.clone().map(Source::new),
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icon: self.icon.clone().map(ImageObject::new),
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image: self.banner.clone().map(ImageObject::new),
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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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featured: Some(generate_featured_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: self.shared_inbox_url.clone().map(|s| Endpoints {
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shared_inbox: s.into(),
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}),
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public_key: self.public_key(),
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language,
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published: Some(convert_datetime(self.published)),
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updated: self.updated.map(convert_datetime),
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posting_restricted_to_mods: Some(self.posting_restricted_to_mods),
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attributed_to: Some(generate_moderators_url(&self.actor_id)?.into()),
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};
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Ok(group)
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}
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#[tracing::instrument(skip_all)]
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async fn verify(
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group: &Group,
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expected_domain: &Url,
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context: &Data<Self::DataType>,
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) -> Result<(), LemmyError> {
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group.verify(expected_domain, context).await
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}
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/// Converts a `Group` to `Community`, inserts it into the database and updates moderators.
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#[tracing::instrument(skip_all)]
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async fn from_json(
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group: Group,
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context: &Data<Self::DataType>,
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) -> Result<ApubCommunity, LemmyError> {
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let instance_id = fetch_instance_actor_for_object(&group.id, context).await?;
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let form = Group::into_insert_form(group.clone(), instance_id);
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let languages = LanguageTag::to_language_id_multiple(group.language, context.pool()).await?;
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let community = Community::create(context.pool(), &form).await?;
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CommunityLanguage::update(context.pool(), languages, community.id).await?;
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let community: ApubCommunity = community.into();
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// Fetching mods and outbox is not necessary for Lemmy to work, so ignore errors. Besides,
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// we need to ignore these errors so that tests can work entirely offline.
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group
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.outbox
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.dereference(&community, context)
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.await
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.map_err(|e| debug!("{}", e))
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.ok();
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if let Some(moderators) = group.attributed_to.or(group.moderators) {
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moderators
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.dereference(&community, context)
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.await
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.map_err(|e| debug!("{}", e))
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.ok();
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}
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Ok(community)
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}
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}
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impl Actor for ApubCommunity {
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fn id(&self) -> Url {
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self.actor_id.inner().clone()
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}
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fn public_key_pem(&self) -> &str {
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&self.public_key
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}
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fn private_key_pem(&self) -> Option<String> {
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self.private_key.clone()
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}
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fn inbox(&self) -> Url {
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self.inbox_url.clone().into()
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}
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fn shared_inbox(&self) -> Option<Url> {
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self.shared_inbox_url.clone().map(Into::into)
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}
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}
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impl ApubCommunity {
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/// For a given community, returns the inboxes of all followers.
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#[tracing::instrument(skip_all)]
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pub(crate) async fn get_follower_inboxes(
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&self,
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context: &LemmyContext,
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) -> Result<Vec<Url>, LemmyError> {
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let id = self.id;
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let local_site_data = fetch_local_site_data(context.pool()).await?;
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let follows = CommunityFollowerView::for_community(context.pool(), id).await?;
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let inboxes: Vec<Url> = follows
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.into_iter()
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.filter(|f| !f.follower.local)
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.map(|f| {
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f.follower
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.shared_inbox_url
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.unwrap_or(f.follower.inbox_url)
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.into()
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})
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.unique()
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.filter(|inbox: &Url| inbox.host_str() != Some(&context.settings().hostname))
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// Don't send to blocked instances
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.filter(|inbox| {
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check_apub_id_valid_with_strictness(inbox, false, &local_site_data, context.settings())
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.is_ok()
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})
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.collect();
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Ok(inboxes)
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}
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}
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#[cfg(test)]
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pub(crate) mod tests {
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use super::*;
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use crate::{
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objects::{instance::tests::parse_lemmy_instance, tests::init_context},
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protocol::tests::file_to_json_object,
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};
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use activitypub_federation::fetch::collection_id::CollectionId;
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use lemmy_db_schema::{source::site::Site, traits::Crud};
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use serial_test::serial;
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pub(crate) async fn parse_lemmy_community(context: &Data<LemmyContext>) -> ApubCommunity {
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// use separate counter so this doesnt affect tests
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let context2 = context.reset_request_count();
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let mut json: Group = file_to_json_object("assets/lemmy/objects/group.json").unwrap();
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// change these links so they dont fetch over the network
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json.moderators = None;
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json.attributed_to = None;
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json.outbox =
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CollectionId::parse("https://enterprise.lemmy.ml/c/tenforward/not_outbox").unwrap();
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let url = Url::parse("https://enterprise.lemmy.ml/c/tenforward").unwrap();
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ApubCommunity::verify(&json, &url, &context2).await.unwrap();
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let community = ApubCommunity::from_json(json, &context2).await.unwrap();
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// this makes one requests to the (intentionally broken) outbox collection
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assert_eq!(context2.request_count(), 1);
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community
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}
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#[actix_rt::test]
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#[serial]
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async fn test_parse_lemmy_community() {
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let context = init_context().await;
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let site = parse_lemmy_instance(&context).await;
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let community = parse_lemmy_community(&context).await;
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assert_eq!(community.title, "Ten Forward");
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assert!(!community.local);
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assert_eq!(community.description.as_ref().unwrap().len(), 132);
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Community::delete(context.pool(), community.id)
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.await
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.unwrap();
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Site::delete(context.pool(), site.id).await.unwrap();
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}
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}
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