Hexbear is the engine that powers Chapochat. It is a customization of the Lemmy project.
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use crate::{
api::{check_slurs, check_slurs_opt},
apub::{
activities::generate_activity_id, activity_queue::send_activity, check_actor_domain,
create_apub_response, fetcher::get_or_fetch_and_upsert_actor, insert_activity, ActorType,
FromApub, PersonExt, ToApub,
},
blocking, DbPool, LemmyContext,
};
use activitystreams::{
activity::{
kind::{FollowType, UndoType},
Follow, Undo,
},
actor::{ApActor, Endpoints, Person},
object::{Image, Tombstone},
prelude::*,
};
use activitystreams_ext::Ext1;
use actix_web::{body::Body, web, HttpResponse};
use anyhow::Context;
use lemmy_db::{
naive_now,
user::{UserForm, User_},
};
use lemmy_utils::{convert_datetime, location_info, LemmyError};
use serde::Deserialize;
use url::Url;
#[derive(Deserialize)]
pub struct UserQuery {
user_name: String,
}
#[async_trait::async_trait(?Send)]
impl ToApub for User_ {
type Response = PersonExt;
// Turn a Lemmy Community into an ActivityPub group that can be sent out over the network.
async fn to_apub(&self, _pool: &DbPool) -> Result<PersonExt, LemmyError> {
// TODO go through all these to_string and to_owned()
let mut person = Person::new();
person
.set_context(activitystreams::context())
.set_id(Url::parse(&self.actor_id)?)
.set_name(self.name.to_owned())
.set_published(convert_datetime(self.published));
if let Some(u) = self.updated {
person.set_updated(convert_datetime(u));
}
if let Some(avatar_url) = &self.avatar {
let mut image = Image::new();
image.set_url(avatar_url.to_owned());
person.set_icon(image.into_any_base()?);
}
if let Some(banner_url) = &self.banner {
let mut image = Image::new();
image.set_url(banner_url.to_owned());
person.set_image(image.into_any_base()?);
}
if let Some(bio) = &self.bio {
person.set_summary(bio.to_owned());
}
let mut ap_actor = ApActor::new(self.get_inbox_url()?, person);
ap_actor
.set_outbox(self.get_outbox_url()?)
.set_followers(self.get_followers_url()?)
.set_following(self.get_following_url().parse()?)
.set_liked(self.get_liked_url().parse()?)
.set_endpoints(Endpoints {
shared_inbox: Some(self.get_shared_inbox_url()?),
..Default::default()
});
if let Some(i) = &self.preferred_username {
ap_actor.set_preferred_username(i.to_owned());
}
Ok(Ext1::new(ap_actor, self.get_public_key_ext()?))
}
fn to_tombstone(&self) -> Result<Tombstone, LemmyError> {
unimplemented!()
}
}
#[async_trait::async_trait(?Send)]
impl ActorType for User_ {
fn actor_id_str(&self) -> String {
self.actor_id.to_owned()
}
fn public_key(&self) -> Option<String> {
self.public_key.to_owned()
}
fn private_key(&self) -> Option<String> {
self.private_key.to_owned()
}
/// As a given local user, send out a follow request to a remote community.
async fn send_follow(
&self,
follow_actor_id: &Url,
context: &LemmyContext,
) -> Result<(), LemmyError> {
let mut follow = Follow::new(self.actor_id.to_owned(), follow_actor_id.as_str());
follow
.set_context(activitystreams::context())
.set_id(generate_activity_id(FollowType::Follow)?);
let follow_actor = get_or_fetch_and_upsert_actor(follow_actor_id, context).await?;
let to = follow_actor.get_inbox_url()?;
insert_activity(self.id, follow.clone(), true, context.pool()).await?;
send_activity(context.activity_queue(), follow, self, vec![to])?;
Ok(())
}
async fn send_unfollow(
&self,
follow_actor_id: &Url,
context: &LemmyContext,
) -> Result<(), LemmyError> {
let mut follow = Follow::new(self.actor_id.to_owned(), follow_actor_id.as_str());
follow
.set_context(activitystreams::context())
.set_id(generate_activity_id(FollowType::Follow)?);
let follow_actor = get_or_fetch_and_upsert_actor(follow_actor_id, context).await?;
let to = follow_actor.get_inbox_url()?;
// Undo that fake activity
let mut undo = Undo::new(Url::parse(&self.actor_id)?, follow.into_any_base()?);
undo
.set_context(activitystreams::context())
.set_id(generate_activity_id(UndoType::Undo)?);
insert_activity(self.id, undo.clone(), true, context.pool()).await?;
send_activity(context.activity_queue(), undo, self, vec![to])?;
Ok(())
}
async fn send_delete(&self, _creator: &User_, _context: &LemmyContext) -> Result<(), LemmyError> {
unimplemented!()
}
async fn send_undo_delete(
&self,
_creator: &User_,
_context: &LemmyContext,
) -> Result<(), LemmyError> {
unimplemented!()
}
async fn send_remove(&self, _creator: &User_, _context: &LemmyContext) -> Result<(), LemmyError> {
unimplemented!()
}
async fn send_undo_remove(
&self,
_creator: &User_,
_context: &LemmyContext,
) -> Result<(), LemmyError> {
unimplemented!()
}
async fn send_accept_follow(
&self,
_follow: Follow,
_context: &LemmyContext,
) -> Result<(), LemmyError> {
unimplemented!()
}
async fn get_follower_inboxes(&self, _pool: &DbPool) -> Result<Vec<Url>, LemmyError> {
unimplemented!()
}
fn user_id(&self) -> i32 {
self.id
}
}
#[async_trait::async_trait(?Send)]
impl FromApub for UserForm {
type ApubType = PersonExt;
/// Parse an ActivityPub person received from another instance into a Lemmy user.
async fn from_apub(
person: &PersonExt,
_context: &LemmyContext,
expected_domain: Option<Url>,
) -> Result<Self, LemmyError> {
let avatar = match person.icon() {
Some(any_image) => Some(
Image::from_any_base(any_image.as_one().context(location_info!())?.clone())?
.context(location_info!())?
.url()
.context(location_info!())?
.as_single_xsd_any_uri()
.map(|u| u.to_string()),
),
None => None,
};
let banner = match person.image() {
Some(any_image) => Some(
Image::from_any_base(any_image.as_one().context(location_info!())?.clone())
.context(location_info!())?
.context(location_info!())?
.url()
.context(location_info!())?
.as_single_xsd_any_uri()
.map(|u| u.to_string()),
),
None => None,
};
let name = person
.name()
.context(location_info!())?
.one()
.context(location_info!())?
.as_xsd_string()
.context(location_info!())?
.to_string();
let preferred_username = person.inner.preferred_username().map(|u| u.to_string());
let bio = person
.inner
.summary()
.map(|s| s.as_single_xsd_string()
.map(|str| str.to_string()))
.flatten();
check_slurs(&name)?;
check_slurs_opt(&preferred_username)?;
check_slurs_opt(&bio)?;
Ok(UserForm {
name,
preferred_username,
password_encrypted: "".to_string(),
admin: false,
banned: false,
email: None,
avatar,
banner,
updated: person.updated().map(|u| u.to_owned().naive_local()),
show_nsfw: false,
theme: "".to_string(),
default_sort_type: 0,
default_listing_type: 0,
lang: "".to_string(),
show_avatars: false,
send_notifications_to_email: false,
has_2fa: false,
matrix_user_id: None,
actor_id: Some(check_actor_domain(person, expected_domain)?),
bio,
local: false,
private_key: None,
public_key: Some(person.ext_one.public_key.to_owned().public_key_pem),
last_refreshed_at: Some(naive_now()),
inbox_disabled: false,
})
}
}
/// Return the user json over HTTP.
pub async fn get_apub_user_http(
info: web::Path<UserQuery>,
context: web::Data<LemmyContext>,
) -> Result<HttpResponse<Body>, LemmyError> {
let user_name = info.into_inner().user_name;
let user = blocking(context.pool(), move |conn| {
User_::find_by_email_or_username(conn, &user_name)
})
.await??;
let u = user.to_apub(context.pool()).await?;
Ok(create_apub_response(&u))
}