mirror of
https://github.com/LemmyNet/lemmy.git
synced 2024-10-31 17:50:01 +00:00
245 lines
7 KiB
Rust
245 lines
7 KiB
Rust
use crate::{
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activities::{verify_is_public, verify_person_in_community},
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check_is_apub_id_valid,
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protocol::{
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objects::{page::Page, tombstone::Tombstone},
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ImageObject,
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Source,
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},
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};
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use activitystreams::{
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object::kind::{ImageType, PageType},
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public,
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};
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use chrono::NaiveDateTime;
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use lemmy_api_common::blocking;
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use lemmy_apub_lib::{
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object_id::ObjectId,
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traits::ApubObject,
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values::{MediaTypeHtml, MediaTypeMarkdown},
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verify::verify_domains_match,
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};
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use lemmy_db_schema::{
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self,
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source::{
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community::Community,
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person::Person,
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post::{Post, PostForm},
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},
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traits::Crud,
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};
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use lemmy_utils::{
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request::fetch_site_data,
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utils::{check_slurs, convert_datetime, markdown_to_html, remove_slurs},
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LemmyError,
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};
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use lemmy_websocket::LemmyContext;
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use std::ops::Deref;
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use url::Url;
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#[derive(Clone, Debug)]
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pub struct ApubPost(Post);
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impl Deref for ApubPost {
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type Target = Post;
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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<Post> for ApubPost {
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fn from(p: Post) -> Self {
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ApubPost { 0: p }
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}
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}
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#[async_trait::async_trait(?Send)]
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impl ApubObject for ApubPost {
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type DataType = LemmyContext;
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type ApubType = Page;
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type TombstoneType = Tombstone;
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fn last_refreshed_at(&self) -> Option<NaiveDateTime> {
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None
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}
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async fn read_from_apub_id(
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object_id: Url,
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context: &LemmyContext,
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) -> Result<Option<Self>, LemmyError> {
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Ok(
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blocking(context.pool(), move |conn| {
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Post::read_from_apub_id(conn, object_id)
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})
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.await??
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.map(Into::into),
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)
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}
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async fn delete(self, context: &LemmyContext) -> Result<(), LemmyError> {
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if !self.deleted {
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blocking(context.pool(), move |conn| {
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Post::update_deleted(conn, self.id, true)
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})
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.await??;
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}
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Ok(())
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}
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// Turn a Lemmy post into an ActivityPub page that can be sent out over the network.
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async fn into_apub(self, context: &LemmyContext) -> Result<Page, LemmyError> {
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let creator_id = self.creator_id;
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let creator = blocking(context.pool(), move |conn| Person::read(conn, creator_id)).await??;
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let community_id = self.community_id;
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let community = blocking(context.pool(), move |conn| {
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Community::read(conn, community_id)
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})
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.await??;
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let source = self.body.clone().map(|body| Source {
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content: body,
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media_type: MediaTypeMarkdown::Markdown,
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});
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let image = self.thumbnail_url.clone().map(|thumb| ImageObject {
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kind: ImageType::Image,
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url: thumb.into(),
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});
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let page = Page {
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r#type: PageType::Page,
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id: ObjectId::new(self.ap_id.clone()),
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attributed_to: ObjectId::new(creator.actor_id),
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to: vec![community.actor_id.into(), public()],
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cc: vec![],
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name: self.name.clone(),
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content: self.body.as_ref().map(|b| markdown_to_html(b)),
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media_type: Some(MediaTypeHtml::Html),
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source,
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url: self.url.clone().map(|u| u.into()),
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image,
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comments_enabled: Some(!self.locked),
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sensitive: Some(self.nsfw),
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stickied: Some(self.stickied),
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published: Some(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(page)
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}
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fn to_tombstone(&self) -> Result<Tombstone, LemmyError> {
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Ok(Tombstone::new(self.ap_id.clone().into()))
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}
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async fn verify(
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page: &Page,
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expected_domain: &Url,
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context: &LemmyContext,
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request_counter: &mut i32,
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) -> Result<(), LemmyError> {
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// We can't verify the domain in case of mod action, because the mod may be on a different
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// instance from the post author.
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if !page.is_mod_action(context).await? {
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verify_domains_match(page.id.inner(), expected_domain)?;
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};
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let community = page.extract_community(context, request_counter).await?;
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check_is_apub_id_valid(page.id.inner(), community.local, &context.settings())?;
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verify_person_in_community(&page.attributed_to, &community, context, request_counter).await?;
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check_slurs(&page.name, &context.settings().slur_regex())?;
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verify_domains_match(page.attributed_to.inner(), page.id.inner())?;
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verify_is_public(&page.to, &page.cc)?;
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Ok(())
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}
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async fn from_apub(
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page: Page,
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context: &LemmyContext,
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request_counter: &mut i32,
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) -> Result<ApubPost, LemmyError> {
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let creator = page
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.attributed_to
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.dereference(context, request_counter)
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.await?;
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let community = page.extract_community(context, request_counter).await?;
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let thumbnail_url: Option<Url> = page.image.map(|i| i.url);
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let (metadata_res, pictrs_thumbnail) = if let Some(url) = &page.url {
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fetch_site_data(context.client(), &context.settings(), Some(url)).await
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} else {
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(None, thumbnail_url)
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};
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let (embed_title, embed_description, embed_html) = metadata_res
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.map(|u| (u.title, u.description, u.html))
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.unwrap_or((None, None, None));
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let body_slurs_removed = page
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.source
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.as_ref()
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.map(|s| remove_slurs(&s.content, &context.settings().slur_regex()));
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let form = PostForm {
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name: page.name,
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url: page.url.map(|u| u.into()),
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body: body_slurs_removed,
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creator_id: creator.id,
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community_id: community.id,
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removed: None,
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locked: page.comments_enabled.map(|e| !e),
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published: page.published.map(|u| u.naive_local()),
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updated: page.updated.map(|u| u.naive_local()),
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deleted: None,
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nsfw: page.sensitive,
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stickied: page.stickied,
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embed_title,
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embed_description,
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embed_html,
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thumbnail_url: pictrs_thumbnail.map(|u| u.into()),
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ap_id: Some(page.id.into()),
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local: Some(false),
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};
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let post = blocking(context.pool(), move |conn| Post::upsert(conn, &form)).await??;
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Ok(post.into())
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::objects::{
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community::tests::parse_lemmy_community,
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person::tests::parse_lemmy_person,
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post::ApubPost,
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tests::{file_to_json_object, init_context},
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};
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use serial_test::serial;
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#[actix_rt::test]
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#[serial]
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async fn test_parse_lemmy_post() {
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let context = init_context();
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let community = parse_lemmy_community(&context).await;
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let person = parse_lemmy_person(&context).await;
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let json = file_to_json_object("assets/lemmy/objects/page.json");
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let url = Url::parse("https://enterprise.lemmy.ml/post/55143").unwrap();
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let mut request_counter = 0;
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ApubPost::verify(&json, &url, &context, &mut request_counter)
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.await
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.unwrap();
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let post = ApubPost::from_apub(json, &context, &mut request_counter)
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.await
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.unwrap();
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assert_eq!(post.ap_id, url.into());
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assert_eq!(post.name, "Post title");
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assert!(post.body.is_some());
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assert_eq!(post.body.as_ref().unwrap().len(), 45);
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assert!(!post.locked);
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assert!(post.stickied);
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assert_eq!(request_counter, 0);
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Post::delete(&*context.pool().get().unwrap(), post.id).unwrap();
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Person::delete(&*context.pool().get().unwrap(), person.id).unwrap();
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Community::delete(&*context.pool().get().unwrap(), community.id).unwrap();
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}
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}
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