lemmy/crates/apub/src/objects/mod.rs
Nutomic e8a52d3a5c
Rewrite images to use local proxy (#4035)
* Add markdown rule to add rel=nofollow for all links

* Add markdown image rule to add local image proxy (fixes #1036)

* comments

* rewrite markdown image links working

* add comment

* perform markdown image processing in api/apub receivers

* clippy

* add db table to validate proxied links

* rewrite link fields for avatar, banner etc

* sql fmt

* proxy links received over federation

* add config option

* undo post.url rewriting, move http route definition

* add tests

* proxy images through pictrs

* testing

* cleanup request.rs file

* more cleanup (fixes #2611)

* include url content type when sending post over apub (fixes #2611)

* store post url content type in db

* should be media_type

* get rid of cache_remote_thumbnails setting, instead automatically
take thumbnail from federation data if available.

* fix tests

* add setting disable_external_link_previews

* federate post url as image depending on mime type

* change setting again

* machete

* invert

* support custom emoji

* clippy

* update defaults

* add image proxy test, fix test

* fix test

* clippy

* revert accidental changes

* address review

* clippy

* Markdown link rule-dess (#4356)

* Extracting opengraph_data to its own type.

* A few additions for markdown-link-rule.

---------

Co-authored-by: Nutomic <me@nutomic.com>

* fix setting

* use enum for image proxy setting

* fix test configs

* add config backwards compat

* clippy

* machete

---------

Co-authored-by: Dessalines <dessalines@users.noreply.github.com>
2024-01-25 09:22:11 -05:00

54 lines
1.7 KiB
Rust

use crate::protocol::Source;
use activitypub_federation::protocol::values::MediaTypeMarkdownOrHtml;
use anyhow::anyhow;
use html2md::parse_html;
use lemmy_utils::{error::LemmyError, settings::structs::Settings};
use url::Url;
pub mod comment;
pub mod community;
pub mod instance;
pub mod person;
pub mod post;
pub mod private_message;
pub(crate) fn read_from_string_or_source(
content: &str,
media_type: &Option<MediaTypeMarkdownOrHtml>,
source: &Option<Source>,
) -> String {
if let Some(s) = source {
// markdown sent by lemmy in source field
s.content.clone()
} else if media_type == &Some(MediaTypeMarkdownOrHtml::Markdown) {
// markdown sent by peertube in content field
content.to_string()
} else {
// otherwise, convert content html to markdown
parse_html(content)
}
}
pub(crate) fn read_from_string_or_source_opt(
content: &Option<String>,
media_type: &Option<MediaTypeMarkdownOrHtml>,
source: &Option<Source>,
) -> Option<String> {
content
.as_ref()
.map(|content| read_from_string_or_source(content, media_type, source))
}
/// When for example a Post is made in a remote community, the community will send it back,
/// wrapped in Announce. If we simply receive this like any other federated object, overwrite the
/// existing, local Post. In particular, it will set the field local = false, so that the object
/// can't be fetched from the Activitypub HTTP endpoint anymore (which only serves local objects).
pub(crate) fn verify_is_remote_object(id: &Url, settings: &Settings) -> Result<(), LemmyError> {
let local_domain = settings.get_hostname_without_port()?;
if id.domain() == Some(&local_domain) {
Err(anyhow!("cant accept local object from remote instance").into())
} else {
Ok(())
}
}