use crate::{
- activities::{extract_community, verify_person_in_community},
- extensions::context::lemmy_context,
- fetcher::object_id::ObjectId,
- objects::{create_tombstone, FromApub, ImageObject, Source, ToApub},
- ActorType,
-};
-use activitystreams::{
- base::AnyBase,
- object::{
- kind::{ImageType, PageType},
- Tombstone,
+ activities::{verify_is_public, verify_person_in_community},
+ check_apub_id_valid_with_strictness,
+ local_site_data_cached,
+ objects::{read_from_string_or_source_opt, verify_is_remote_object},
+ protocol::{
+ objects::{
+ page::{Attachment, AttributedTo, Page, PageType},
+ LanguageTag,
+ },
+ ImageObject,
+ InCommunity,
+ Source,
},
- primitives::OneOrMany,
- public,
- unparsed::Unparsed,
};
-use chrono::{DateTime, FixedOffset};
-use lemmy_api_common::blocking;
-use lemmy_apub_lib::{
- values::{MediaTypeHtml, MediaTypeMarkdown},
- verify_domains_match,
+use activitypub_federation::{
+ config::Data,
+ kinds::public,
+ protocol::{values::MediaTypeMarkdownOrHtml, verification::verify_domains_match},
+ traits::Object,
+};
+use anyhow::anyhow;
+use chrono::NaiveDateTime;
+use html2md::parse_html;
+use lemmy_api_common::{
+ context::LemmyContext,
+ request::fetch_site_data,
+ utils::{is_mod_or_admin, local_site_opt_to_sensitive, local_site_opt_to_slur_regex},
};
-use lemmy_db_queries::{source::post::Post_, ApubObject, Crud, DbPool};
use lemmy_db_schema::{
self,
source::{
community::Community,
+ local_site::LocalSite,
+ moderator::{ModLockPost, ModLockPostForm},
person::Person,
- post::{Post, PostForm},
+ post::{Post, PostInsertForm, PostUpdateForm},
},
+ traits::Crud,
};
use lemmy_utils::{
- request::fetch_site_data,
- utils::{check_slurs, convert_datetime, markdown_to_html, remove_slurs},
- LemmyError,
+ error::LemmyError,
+ utils::{
+ markdown::markdown_to_html,
+ slurs::{check_slurs_opt, remove_slurs},
+ time::convert_datetime,
+ validation::check_url_scheme,
+ },
};
-use lemmy_websocket::LemmyContext;
-use serde::{Deserialize, Serialize};
-use serde_with::skip_serializing_none;
+use std::ops::Deref;
use url::Url;
-#[skip_serializing_none]
-#[derive(Clone, Debug, Deserialize, Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct Page {
- #[serde(rename = "@context")]
- context: OneOrMany<AnyBase>,
- r#type: PageType,
- id: Url,
- pub(crate) attributed_to: ObjectId<Person>,
- to: [Url; 2],
- name: String,
- content: Option<String>,
- media_type: MediaTypeHtml,
- source: Option<Source>,
- url: Option<Url>,
- image: Option<ImageObject>,
- pub(crate) comments_enabled: Option<bool>,
- sensitive: Option<bool>,
- pub(crate) stickied: Option<bool>,
- published: DateTime<FixedOffset>,
- updated: Option<DateTime<FixedOffset>>,
- #[serde(flatten)]
- unparsed: Unparsed,
-}
+const MAX_TITLE_LENGTH: usize = 200;
+
+#[derive(Clone, Debug)]
+pub struct ApubPost(pub(crate) Post);
-impl Page {
- pub(crate) fn id_unchecked(&self) -> &Url {
- &self.id
+impl Deref for ApubPost {
+ type Target = Post;
+ fn deref(&self) -> &Self::Target {
+ &self.0
}
- pub(crate) fn id(&self, expected_domain: &Url) -> Result<&Url, LemmyError> {
- verify_domains_match(&self.id, expected_domain)?;
- Ok(&self.id)
+}
+
+impl From<Post> for ApubPost {
+ fn from(p: Post) -> Self {
+ ApubPost(p)
}
+}
- /// Only mods can change the post's stickied/locked status. So if either of these is changed from
- /// the current value, it is a mod action and needs to be verified as such.
- ///
- /// Both stickied and locked need to be false on a newly created post (verified in [[CreatePost]].
- pub(crate) async fn is_mod_action(&self, pool: &DbPool) -> Result<bool, LemmyError> {
- let post_id = self.id.clone();
- let old_post = blocking(pool, move |conn| {
- Post::read_from_apub_id(conn, &post_id.into())
- })
- .await?;
-
- let is_mod_action = if let Ok(old_post) = old_post {
- self.stickied != Some(old_post.stickied) || self.comments_enabled != Some(!old_post.locked)
- } else {
- false
- };
- Ok(is_mod_action)
+#[async_trait::async_trait]
+impl Object for ApubPost {
+ type DataType = LemmyContext;
+ type Kind = Page;
+ type Error = LemmyError;
+
+ fn last_refreshed_at(&self) -> Option<NaiveDateTime> {
+ None
}
- pub(crate) async fn verify(
- &self,
- context: &LemmyContext,
- request_counter: &mut i32,
- ) -> Result<(), LemmyError> {
- let community = extract_community(&self.to, context, request_counter).await?;
-
- check_slurs(&self.name)?;
- verify_domains_match(self.attributed_to.inner(), &self.id)?;
- verify_person_in_community(
- &self.attributed_to,
- &ObjectId::new(community.actor_id()),
- context,
- request_counter,
+ #[tracing::instrument(skip_all)]
+ async fn read_from_id(
+ object_id: Url,
+ context: &Data<Self::DataType>,
+ ) -> Result<Option<Self>, LemmyError> {
+ Ok(
+ Post::read_from_apub_id(&mut context.pool(), object_id)
+ .await?
+ .map(Into::into),
)
- .await?;
- Ok(())
}
-}
-#[async_trait::async_trait(?Send)]
-impl ToApub for Post {
- type ApubType = Page;
+ #[tracing::instrument(skip_all)]
+ async fn delete(self, context: &Data<Self::DataType>) -> Result<(), LemmyError> {
+ if !self.deleted {
+ let form = PostUpdateForm::builder().deleted(Some(true)).build();
+ Post::update(&mut context.pool(), self.id, &form).await?;
+ }
+ Ok(())
+ }
// Turn a Lemmy post into an ActivityPub page that can be sent out over the network.
- async fn to_apub(&self, pool: &DbPool) -> Result<Page, LemmyError> {
+ #[tracing::instrument(skip_all)]
+ async fn into_json(self, context: &Data<Self::DataType>) -> Result<Page, LemmyError> {
let creator_id = self.creator_id;
- let creator = blocking(pool, move |conn| Person::read(conn, creator_id)).await??;
+ let creator = Person::read(&mut context.pool(), creator_id).await?;
let community_id = self.community_id;
- let community = blocking(pool, move |conn| Community::read(conn, community_id)).await??;
-
- let source = self.body.clone().map(|body| Source {
- content: body,
- media_type: MediaTypeMarkdown::Markdown,
- });
- let image = self.thumbnail_url.clone().map(|thumb| ImageObject {
- kind: ImageType::Image,
- url: thumb.into(),
- });
+ let community = Community::read(&mut context.pool(), community_id).await?;
+ let language = LanguageTag::new_single(self.language_id, &mut context.pool()).await?;
let page = Page {
- context: lemmy_context(),
- r#type: PageType::Page,
+ kind: PageType::Page,
id: self.ap_id.clone().into(),
- attributed_to: ObjectId::new(creator.actor_id),
- to: [community.actor_id.into(), public()],
- name: self.name.clone(),
+ attributed_to: AttributedTo::Lemmy(creator.actor_id.into()),
+ to: vec![community.actor_id.clone().into(), public()],
+ cc: vec![],
+ name: Some(self.name.clone()),
content: self.body.as_ref().map(|b| markdown_to_html(b)),
- media_type: MediaTypeHtml::Html,
- source,
- url: self.url.clone().map(|u| u.into()),
- image,
+ media_type: Some(MediaTypeMarkdownOrHtml::Html),
+ source: self.body.clone().map(Source::new),
+ attachment: self.url.clone().map(Attachment::new).into_iter().collect(),
+ image: self.thumbnail_url.clone().map(ImageObject::new),
comments_enabled: Some(!self.locked),
sensitive: Some(self.nsfw),
- stickied: Some(self.stickied),
- published: convert_datetime(self.published),
+ language,
+ published: Some(convert_datetime(self.published)),
updated: self.updated.map(convert_datetime),
- unparsed: Default::default(),
+ audience: Some(community.actor_id.into()),
+ in_reply_to: None,
};
Ok(page)
}
- fn to_tombstone(&self) -> Result<Tombstone, LemmyError> {
- create_tombstone(
- self.deleted,
- self.ap_id.to_owned().into(),
- self.updated,
- PageType::Page,
- )
- }
-}
-
-#[async_trait::async_trait(?Send)]
-impl FromApub for Post {
- type ApubType = Page;
-
- async fn from_apub(
+ #[tracing::instrument(skip_all)]
+ async fn verify(
page: &Page,
- context: &LemmyContext,
expected_domain: &Url,
- request_counter: &mut i32,
- ) -> Result<Post, LemmyError> {
+ context: &Data<Self::DataType>,
+ ) -> Result<(), LemmyError> {
// We can't verify the domain in case of mod action, because the mod may be on a different
// instance from the post author.
- let ap_id = if page.is_mod_action(context.pool()).await? {
- page.id_unchecked()
- } else {
- page.id(expected_domain)?
+ if !page.is_mod_action(context).await? {
+ verify_domains_match(page.id.inner(), expected_domain)?;
+ verify_is_remote_object(page.id.inner(), context.settings())?;
};
- let ap_id = Some(ap_id.clone().into());
- let creator = page
- .attributed_to
- .dereference(context, request_counter)
- .await?;
- let community = extract_community(&page.to, context, request_counter).await?;
-
- let thumbnail_url: Option<Url> = page.image.clone().map(|i| i.url);
- let (metadata_res, pictrs_thumbnail) = if let Some(url) = &page.url {
- fetch_site_data(context.client(), Some(url)).await
+
+ let community = page.community(context).await?;
+ check_apub_id_valid_with_strictness(page.id.inner(), community.local, context).await?;
+ verify_person_in_community(&page.creator()?, &community, context).await?;
+
+ let local_site_data = local_site_data_cached(&mut context.pool()).await?;
+ let slur_regex = &local_site_opt_to_slur_regex(&local_site_data.local_site);
+ check_slurs_opt(&page.name, slur_regex)?;
+
+ verify_domains_match(page.creator()?.inner(), page.id.inner())?;
+ verify_is_public(&page.to, &page.cc)?;
+ Ok(())
+ }
+
+ #[tracing::instrument(skip_all)]
+ async fn from_json(page: Page, context: &Data<Self::DataType>) -> Result<ApubPost, LemmyError> {
+ let creator = page.creator()?.dereference(context).await?;
+ let community = page.community(context).await?;
+ if community.posting_restricted_to_mods {
+ is_mod_or_admin(&mut context.pool(), creator.id, community.id).await?;
+ }
+ let mut name = page
+ .name
+ .clone()
+ .or_else(|| {
+ page
+ .content
+ .clone()
+ .as_ref()
+ .and_then(|c| parse_html(c).lines().next().map(ToString::to_string))
+ })
+ .ok_or_else(|| anyhow!("Object must have name or content"))?;
+ if name.chars().count() > MAX_TITLE_LENGTH {
+ name = name.chars().take(MAX_TITLE_LENGTH).collect();
+ }
+
+ // read existing, local post if any (for generating mod log)
+ let old_post = page.id.dereference_local(context).await;
+
+ let form = if !page.is_mod_action(context).await? {
+ let first_attachment = page.attachment.into_iter().map(Attachment::url).next();
+ let url = if first_attachment.is_some() {
+ first_attachment
+ } else if page.kind == PageType::Video {
+ // we cant display videos directly, so insert a link to external video page
+ Some(page.id.inner().clone())
+ } else {
+ None
+ };
+ check_url_scheme(&url)?;
+
+ let local_site = LocalSite::read(&mut context.pool()).await.ok();
+ let allow_sensitive = local_site_opt_to_sensitive(&local_site);
+ let page_is_sensitive = page.sensitive.unwrap_or(false);
+ let include_image = allow_sensitive || !page_is_sensitive;
+
+ // Only fetch metadata if the post has a url and was not seen previously. We dont want to
+ // waste resources by fetching metadata for the same post multiple times.
+ // Additionally, only fetch image if content is not sensitive or is allowed on local site.
+ let (metadata_res, thumbnail) = match &url {
+ Some(url) if old_post.is_err() => {
+ fetch_site_data(
+ context.client(),
+ context.settings(),
+ Some(url),
+ include_image,
+ )
+ .await
+ }
+ _ => (None, None),
+ };
+ // If no image was included with metadata, use post image instead when available.
+ let thumbnail_url = thumbnail.or_else(|| page.image.map(|i| i.url.into()));
+
+ let (embed_title, embed_description, embed_video_url) = metadata_res
+ .map(|u| (u.title, u.description, u.embed_video_url))
+ .unwrap_or_default();
+ let slur_regex = &local_site_opt_to_slur_regex(&local_site);
+
+ let body_slurs_removed =
+ read_from_string_or_source_opt(&page.content, &page.media_type, &page.source)
+ .map(|s| remove_slurs(&s, slur_regex));
+ let language_id =
+ LanguageTag::to_language_id_single(page.language, &mut context.pool()).await?;
+
+ PostInsertForm {
+ name,
+ url: url.map(Into::into),
+ body: body_slurs_removed,
+ creator_id: creator.id,
+ community_id: community.id,
+ removed: None,
+ locked: page.comments_enabled.map(|e| !e),
+ published: page.published.map(|u| u.naive_local()),
+ updated: page.updated.map(|u| u.naive_local()),
+ deleted: Some(false),
+ nsfw: page.sensitive,
+ embed_title,
+ embed_description,
+ embed_video_url,
+ thumbnail_url,
+ ap_id: Some(page.id.clone().into()),
+ local: Some(false),
+ language_id,
+ featured_community: None,
+ featured_local: None,
+ }
} else {
- (None, thumbnail_url)
+ // if is mod action, only update locked/stickied fields, nothing else
+ PostInsertForm::builder()
+ .name(name)
+ .creator_id(creator.id)
+ .community_id(community.id)
+ .ap_id(Some(page.id.clone().into()))
+ .locked(page.comments_enabled.map(|e| !e))
+ .updated(page.updated.map(|u| u.naive_local()))
+ .build()
};
- let (embed_title, embed_description, embed_html) = metadata_res
- .map(|u| (u.title, u.description, u.html))
- .unwrap_or((None, None, None));
-
- let body_slurs_removed = page.source.as_ref().map(|s| remove_slurs(&s.content));
- let form = PostForm {
- name: page.name.clone(),
- url: page.url.clone().map(|u| u.into()),
- body: body_slurs_removed,
- creator_id: creator.id,
- community_id: community.id,
- removed: None,
- locked: page.comments_enabled.map(|e| !e),
- published: Some(page.published.naive_local()),
- updated: page.updated.map(|u| u.naive_local()),
- deleted: None,
- nsfw: page.sensitive,
- stickied: page.stickied,
- embed_title,
- embed_description,
- embed_html,
- thumbnail_url: pictrs_thumbnail.map(|u| u.into()),
- ap_id,
- local: Some(false),
- };
- Ok(blocking(context.pool(), move |conn| Post::upsert(conn, &form)).await??)
+
+ let post = Post::create(&mut context.pool(), &form).await?;
+
+ // write mod log entry for lock
+ if Page::is_locked_changed(&old_post, &page.comments_enabled) {
+ let form = ModLockPostForm {
+ mod_person_id: creator.id,
+ post_id: post.id,
+ locked: Some(post.locked),
+ };
+ ModLockPost::create(&mut context.pool(), &form).await?;
+ }
+
+ Ok(post.into())
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ #![allow(clippy::unwrap_used)]
+ #![allow(clippy::indexing_slicing)]
+
+ use super::*;
+ use crate::{
+ objects::{
+ community::tests::parse_lemmy_community,
+ person::tests::parse_lemmy_person,
+ post::ApubPost,
+ tests::init_context,
+ },
+ protocol::tests::file_to_json_object,
+ };
+ use lemmy_db_schema::source::site::Site;
+ use serial_test::serial;
+
+ #[tokio::test]
+ #[serial]
+ async fn test_parse_lemmy_post() {
+ let context = init_context().await;
+ let (person, site) = parse_lemmy_person(&context).await;
+ let community = parse_lemmy_community(&context).await;
+
+ let json = file_to_json_object("assets/lemmy/objects/page.json").unwrap();
+ let url = Url::parse("https://enterprise.lemmy.ml/post/55143").unwrap();
+ ApubPost::verify(&json, &url, &context).await.unwrap();
+ let post = ApubPost::from_json(json, &context).await.unwrap();
+
+ assert_eq!(post.ap_id, url.into());
+ assert_eq!(post.name, "Post title");
+ assert!(post.body.is_some());
+ assert_eq!(post.body.as_ref().unwrap().len(), 45);
+ assert!(!post.locked);
+ assert!(!post.featured_community);
+ assert_eq!(context.request_count(), 0);
+
+ Post::delete(&mut context.pool(), post.id).await.unwrap();
+ Person::delete(&mut context.pool(), person.id)
+ .await
+ .unwrap();
+ Community::delete(&mut context.pool(), community.id)
+ .await
+ .unwrap();
+ Site::delete(&mut context.pool(), site.id).await.unwrap();
}
}
projects / lemmy.git / blobdiff