2021-07-17 16:20:44 +00:00
|
|
|
use crate::{
|
|
|
|
check_community_or_site_ban,
|
|
|
|
check_is_apub_id_valid,
|
|
|
|
fetcher::{community::get_or_fetch_and_upsert_community, person::get_or_fetch_and_upsert_person},
|
|
|
|
generate_moderators_url,
|
|
|
|
};
|
|
|
|
use anyhow::anyhow;
|
|
|
|
use lemmy_api_common::blocking;
|
|
|
|
use lemmy_apub_lib::{verify_domains_match, ActivityCommonFields};
|
|
|
|
use lemmy_db_queries::ApubObject;
|
|
|
|
use lemmy_db_schema::{
|
|
|
|
source::{community::Community, person::Person},
|
|
|
|
DbUrl,
|
|
|
|
};
|
|
|
|
use lemmy_db_views_actor::community_view::CommunityView;
|
2021-07-27 22:18:50 +00:00
|
|
|
use lemmy_utils::{settings::structs::Settings, LemmyError};
|
2021-07-17 16:20:44 +00:00
|
|
|
use lemmy_websocket::LemmyContext;
|
2021-07-27 22:18:50 +00:00
|
|
|
use url::{ParseError, Url};
|
|
|
|
use uuid::Uuid;
|
2021-07-17 16:20:44 +00:00
|
|
|
|
|
|
|
pub mod comment;
|
|
|
|
pub mod community;
|
|
|
|
pub mod deletion;
|
|
|
|
pub mod following;
|
|
|
|
pub mod post;
|
|
|
|
pub mod private_message;
|
|
|
|
pub mod removal;
|
2021-03-09 17:13:08 +00:00
|
|
|
pub mod send;
|
2021-07-17 16:20:44 +00:00
|
|
|
pub mod voting;
|
|
|
|
|
|
|
|
/// Checks that the specified Url actually identifies a Person (by fetching it), and that the person
|
|
|
|
/// doesn't have a site ban.
|
|
|
|
async fn verify_person(
|
|
|
|
person_id: &Url,
|
|
|
|
context: &LemmyContext,
|
|
|
|
request_counter: &mut i32,
|
|
|
|
) -> Result<(), LemmyError> {
|
|
|
|
let person = get_or_fetch_and_upsert_person(person_id, context, request_counter).await?;
|
|
|
|
if person.banned {
|
|
|
|
return Err(anyhow!("Person {} is banned", person_id).into());
|
|
|
|
}
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
2021-07-27 22:18:50 +00:00
|
|
|
pub(crate) async fn extract_community(
|
2021-07-17 16:20:44 +00:00
|
|
|
cc: &[Url],
|
|
|
|
context: &LemmyContext,
|
|
|
|
request_counter: &mut i32,
|
|
|
|
) -> Result<Community, LemmyError> {
|
|
|
|
let mut cc_iter = cc.iter();
|
2021-07-27 22:18:50 +00:00
|
|
|
loop {
|
2021-07-17 16:20:44 +00:00
|
|
|
if let Some(cid) = cc_iter.next() {
|
|
|
|
if let Ok(c) = get_or_fetch_and_upsert_community(cid, context, request_counter).await {
|
2021-07-27 22:18:50 +00:00
|
|
|
break Ok(c);
|
2021-07-17 16:20:44 +00:00
|
|
|
}
|
|
|
|
} else {
|
|
|
|
return Err(anyhow!("No community found in cc").into());
|
|
|
|
}
|
2021-07-27 22:18:50 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Fetches the person and community to verify their type, then checks if person is banned from site
|
|
|
|
/// or community.
|
|
|
|
async fn verify_person_in_community(
|
|
|
|
person_id: &Url,
|
|
|
|
community_id: &Url,
|
|
|
|
context: &LemmyContext,
|
|
|
|
request_counter: &mut i32,
|
|
|
|
) -> Result<(), LemmyError> {
|
|
|
|
let community = get_or_fetch_and_upsert_community(community_id, context, request_counter).await?;
|
|
|
|
let person = get_or_fetch_and_upsert_person(person_id, context, request_counter).await?;
|
|
|
|
check_community_or_site_ban(&person, community.id, context.pool()).await
|
2021-07-17 16:20:44 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/// Simply check that the url actually refers to a valid group.
|
|
|
|
async fn verify_community(
|
|
|
|
community_id: &Url,
|
|
|
|
context: &LemmyContext,
|
|
|
|
request_counter: &mut i32,
|
|
|
|
) -> Result<(), LemmyError> {
|
|
|
|
get_or_fetch_and_upsert_community(community_id, context, request_counter).await?;
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
fn verify_activity(common: &ActivityCommonFields) -> Result<(), LemmyError> {
|
|
|
|
check_is_apub_id_valid(&common.actor, false)?;
|
|
|
|
verify_domains_match(common.id_unchecked(), &common.actor)?;
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
2021-07-27 22:18:50 +00:00
|
|
|
/// Verify that the actor is a community mod. This check is only run if the community is local,
|
|
|
|
/// because in case of remote communities, admins can also perform mod actions. As admin status
|
|
|
|
/// is not federated, we cant verify their actions remotely.
|
|
|
|
pub(crate) async fn verify_mod_action(
|
2021-07-17 16:20:44 +00:00
|
|
|
actor_id: &Url,
|
2021-07-27 22:18:50 +00:00
|
|
|
community: Url,
|
2021-07-17 16:20:44 +00:00
|
|
|
context: &LemmyContext,
|
|
|
|
) -> Result<(), LemmyError> {
|
|
|
|
let community = blocking(context.pool(), move |conn| {
|
2021-07-27 22:18:50 +00:00
|
|
|
Community::read_from_apub_id(conn, &community.into())
|
2021-07-17 16:20:44 +00:00
|
|
|
})
|
|
|
|
.await??;
|
|
|
|
|
|
|
|
if community.local {
|
|
|
|
let actor_id: DbUrl = actor_id.clone().into();
|
|
|
|
let actor = blocking(context.pool(), move |conn| {
|
|
|
|
Person::read_from_apub_id(conn, &actor_id)
|
|
|
|
})
|
|
|
|
.await??;
|
|
|
|
|
|
|
|
// Note: this will also return true for admins in addition to mods, but as we dont know about
|
|
|
|
// remote admins, it doesnt make any difference.
|
|
|
|
let community_id = community.id;
|
|
|
|
let actor_id = actor.id;
|
|
|
|
let is_mod_or_admin = blocking(context.pool(), move |conn| {
|
|
|
|
CommunityView::is_mod_or_admin(conn, actor_id, community_id)
|
|
|
|
})
|
|
|
|
.await?;
|
|
|
|
if !is_mod_or_admin {
|
|
|
|
return Err(anyhow!("Not a mod").into());
|
|
|
|
}
|
|
|
|
}
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
/// For Add/Remove community moderator activities, check that the target field actually contains
|
|
|
|
/// /c/community/moderators. Any different values are unsupported.
|
|
|
|
fn verify_add_remove_moderator_target(target: &Url, community: Url) -> Result<(), LemmyError> {
|
|
|
|
if target != &generate_moderators_url(&community.into())?.into_inner() {
|
|
|
|
return Err(anyhow!("Unkown target url").into());
|
|
|
|
}
|
|
|
|
Ok(())
|
|
|
|
}
|
2021-07-27 22:18:50 +00:00
|
|
|
|
|
|
|
/// Generate a unique ID for an activity, in the format:
|
|
|
|
/// `http(s)://example.com/receive/create/202daf0a-1489-45df-8d2e-c8a3173fed36`
|
|
|
|
fn generate_activity_id<T>(kind: T) -> Result<Url, ParseError>
|
|
|
|
where
|
|
|
|
T: ToString,
|
|
|
|
{
|
|
|
|
let id = format!(
|
|
|
|
"{}/activities/{}/{}",
|
|
|
|
Settings::get().get_protocol_and_hostname(),
|
|
|
|
kind.to_string().to_lowercase(),
|
|
|
|
Uuid::new_v4()
|
|
|
|
);
|
|
|
|
Url::parse(&id)
|
|
|
|
}
|