1 use crate::fetcher::post_or_comment::PostOrComment;
2 use anyhow::{anyhow, Context};
3 use lemmy_api_common::blocking;
4 use lemmy_db_schema::{newtypes::DbUrl, source::activity::Activity, DbPool};
5 use lemmy_utils::{location_info, settings::structs::Settings, LemmyError};
6 use serde::{Deserialize, Deserializer};
8 use url::{ParseError, Url};
11 pub(crate) mod activity_lists;
12 pub(crate) mod collections;
16 pub(crate) mod mentions;
21 /// Checks if the ID is allowed for sending or receiving.
23 /// In particular, it checks for:
24 /// - federation being enabled (if its disabled, only local URLs are allowed)
25 /// - the correct scheme (either http or https)
26 /// - URL being in the allowlist (if it is active)
27 /// - URL not being in the blocklist (if it is active)
29 /// `use_strict_allowlist` should be true only when parsing a remote community, or when parsing a
30 /// post/comment in a local community.
31 pub(crate) fn check_is_apub_id_valid(
33 use_strict_allowlist: bool,
35 ) -> Result<(), LemmyError> {
36 let domain = apub_id.domain().context(location_info!())?.to_string();
37 let local_instance = settings.get_hostname_without_port()?;
39 if !settings.federation.enabled {
40 return if domain == local_instance {
45 "Trying to connect with {}, but federation is disabled",
53 let host = apub_id.host_str().context(location_info!())?;
54 let host_as_ip = host.parse::<IpAddr>();
55 if host == "localhost" || host_as_ip.is_ok() {
56 return Err(anyhow!("invalid hostname {}: {}", host, apub_id).into());
59 if apub_id.scheme() != settings.get_protocol_string() {
60 return Err(anyhow!("invalid apub id scheme {}: {}", apub_id.scheme(), apub_id).into());
63 // TODO: might be good to put the part above in one method, and below in another
64 // (which only gets called in apub::objects)
65 // -> no that doesnt make sense, we still need the code below for blocklist and strict allowlist
66 if let Some(blocked) = settings.to_owned().federation.blocked_instances {
67 if blocked.contains(&domain) {
68 return Err(anyhow!("{} is in federation blocklist", domain).into());
72 if let Some(mut allowed) = settings.to_owned().federation.allowed_instances {
73 // Only check allowlist if this is a community, or strict allowlist is enabled.
74 let strict_allowlist = settings.to_owned().federation.strict_allowlist;
75 if use_strict_allowlist || strict_allowlist {
76 // need to allow this explicitly because apub receive might contain objects from our local
78 allowed.push(local_instance);
80 if !allowed.contains(&domain) {
81 return Err(anyhow!("{} not in federation allowlist", domain).into());
89 pub(crate) fn deserialize_one_or_many<'de, T, D>(deserializer: D) -> Result<Vec<T>, D::Error>
94 #[derive(Deserialize)]
101 let result: OneOrMany<T> = Deserialize::deserialize(deserializer)?;
103 OneOrMany::Many(list) => list,
104 OneOrMany::One(value) => vec![value],
108 pub enum EndpointType {
116 /// Generates an apub endpoint for a given domain, IE xyz.tld
117 pub fn generate_local_apub_endpoint(
118 endpoint_type: EndpointType,
121 ) -> Result<DbUrl, ParseError> {
122 let point = match endpoint_type {
123 EndpointType::Community => "c",
124 EndpointType::Person => "u",
125 EndpointType::Post => "post",
126 EndpointType::Comment => "comment",
127 EndpointType::PrivateMessage => "private_message",
130 Ok(Url::parse(&format!("{}/{}/{}", domain, point, name))?.into())
133 pub fn generate_followers_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
134 Ok(Url::parse(&format!("{}/followers", actor_id))?.into())
137 pub fn generate_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
138 Ok(Url::parse(&format!("{}/inbox", actor_id))?.into())
141 pub fn generate_shared_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, LemmyError> {
142 let actor_id: Url = actor_id.clone().into();
146 &actor_id.host_str().context(location_info!())?,
147 if let Some(port) = actor_id.port() {
153 Ok(Url::parse(&url)?.into())
156 pub fn generate_outbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
157 Ok(Url::parse(&format!("{}/outbox", actor_id))?.into())
160 fn generate_moderators_url(community_id: &DbUrl) -> Result<DbUrl, LemmyError> {
161 Ok(Url::parse(&format!("{}/moderators", community_id))?.into())
164 /// Store a sent or received activity in the database, for logging purposes. These records are not
166 async fn insert_activity(
168 activity: serde_json::Value,
172 ) -> Result<(), LemmyError> {
173 let ap_id = ap_id.to_owned().into();
174 blocking(pool, move |conn| {
175 Activity::insert(conn, ap_id, activity, local, sensitive)