lemmy/server/src/apub/activities.rs

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use crate::{
apub::{
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community::do_announce, extensions::signatures::sign, insert_activity, is_apub_id_valid,
ActorType,
},
request::retry_custom,
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DbPool, LemmyError,
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};
use activitystreams_new::base::AnyBase;
use actix_web::client::Client;
use lemmy_db::{community::Community, user::User_};
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use log::debug;
use url::Url;
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pub async fn send_activity_to_community(
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creator: &User_,
community: &Community,
to: Vec<String>,
activity: AnyBase,
client: &Client,
pool: &DbPool,
) -> Result<(), LemmyError> {
insert_activity(creator.id, activity.clone(), true, pool).await?;
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// if this is a local community, we need to do an announce from the community instead
if community.local {
do_announce(activity, &community, creator, client, pool).await?;
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} else {
send_activity(client, &activity, creator, to).await?;
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}
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Ok(())
}
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/// Send an activity to a list of recipients, using the correct headers etc.
pub async fn send_activity(
client: &Client,
activity: &AnyBase,
actor: &dyn ActorType,
to: Vec<String>,
) -> Result<(), LemmyError> {
let activity = serde_json::to_string(&activity)?;
debug!("Sending activitypub activity {} to {:?}", activity, to);
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for t in to {
let to_url = Url::parse(&t)?;
if !is_apub_id_valid(&to_url) {
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debug!("Not sending activity to {} (invalid or blocklisted)", t);
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continue;
}
let res = retry_custom(|| async {
let request = client.post(&t).header("Content-Type", "application/json");
match sign(request, actor, activity.clone()).await {
Ok(signed) => Ok(signed.send().await),
Err(e) => Err(e),
}
})
.await?;
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debug!("Result for activity send: {:?}", res);
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}
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Ok(())
}