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 #[tracing::instrument(skip(settings))]
32 pub(crate) fn check_is_apub_id_valid(
34 use_strict_allowlist: bool,
36 ) -> Result<(), LemmyError> {
37 let domain = apub_id.domain().context(location_info!())?.to_string();
38 let local_instance = settings.get_hostname_without_port()?;
40 if !settings.federation.enabled {
41 return if domain == local_instance {
45 "Trying to connect with {}, but federation is disabled",
48 Err(LemmyError::from_error_message(err, "federation_disabled"))
52 let host = apub_id.host_str().context(location_info!())?;
53 let host_as_ip = host.parse::<IpAddr>();
54 if host == "localhost" || host_as_ip.is_ok() {
55 let err = anyhow!("invalid hostname {}: {}", host, apub_id);
56 return Err(LemmyError::from_error_message(err, "invalid_hostname"));
59 if apub_id.scheme() != settings.get_protocol_string() {
60 let err = anyhow!("invalid apub id scheme {}: {}", apub_id.scheme(), apub_id);
61 return Err(LemmyError::from_error_message(err, "invalid_scheme"));
64 // TODO: might be good to put the part above in one method, and below in another
65 // (which only gets called in apub::objects)
66 // -> no that doesnt make sense, we still need the code below for blocklist and strict allowlist
67 if let Some(blocked) = settings.to_owned().federation.blocked_instances {
68 if blocked.contains(&domain) {
69 let err = anyhow!("{} is in federation blocklist", domain);
70 return Err(LemmyError::from_error_message(err, "federation_blocked"));
74 if let Some(mut allowed) = settings.to_owned().federation.allowed_instances {
75 // Only check allowlist if this is a community, or strict allowlist is enabled.
76 let strict_allowlist = settings.to_owned().federation.strict_allowlist;
77 if use_strict_allowlist || strict_allowlist {
78 // need to allow this explicitly because apub receive might contain objects from our local
80 allowed.push(local_instance);
82 if !allowed.contains(&domain) {
83 let err = anyhow!("{} not in federation allowlist", domain);
84 return Err(LemmyError::from_error_message(
86 "federation_not_allowed",
95 pub(crate) fn deserialize_one_or_many<'de, T, D>(deserializer: D) -> Result<Vec<T>, D::Error>
100 #[derive(Deserialize)]
107 let result: OneOrMany<T> = Deserialize::deserialize(deserializer)?;
109 OneOrMany::Many(list) => list,
110 OneOrMany::One(value) => vec![value],
114 pub(crate) fn deserialize_one<'de, T, D>(deserializer: D) -> Result<[T; 1], D::Error>
117 D: Deserializer<'de>,
119 #[derive(Deserialize)]
126 let result: MaybeArray<T> = Deserialize::deserialize(deserializer)?;
128 MaybeArray::Simple(value) => [value],
129 MaybeArray::Array(value) => value,
133 pub enum EndpointType {
141 /// Generates an apub endpoint for a given domain, IE xyz.tld
142 pub fn generate_local_apub_endpoint(
143 endpoint_type: EndpointType,
146 ) -> Result<DbUrl, ParseError> {
147 let point = match endpoint_type {
148 EndpointType::Community => "c",
149 EndpointType::Person => "u",
150 EndpointType::Post => "post",
151 EndpointType::Comment => "comment",
152 EndpointType::PrivateMessage => "private_message",
155 Ok(Url::parse(&format!("{}/{}/{}", domain, point, name))?.into())
158 pub fn generate_followers_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
159 Ok(Url::parse(&format!("{}/followers", actor_id))?.into())
162 pub fn generate_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
163 Ok(Url::parse(&format!("{}/inbox", actor_id))?.into())
166 pub fn generate_site_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
167 let mut actor_id: Url = actor_id.clone().into();
168 actor_id.set_path("site_inbox");
172 pub fn generate_shared_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, LemmyError> {
173 let actor_id: Url = actor_id.clone().into();
177 &actor_id.host_str().context(location_info!())?,
178 if let Some(port) = actor_id.port() {
184 Ok(Url::parse(&url)?.into())
187 pub fn generate_outbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
188 Ok(Url::parse(&format!("{}/outbox", actor_id))?.into())
191 fn generate_moderators_url(community_id: &DbUrl) -> Result<DbUrl, LemmyError> {
192 Ok(Url::parse(&format!("{}/moderators", community_id))?.into())
195 /// Store a sent or received activity in the database, for logging purposes. These records are not
197 #[tracing::instrument(skip(pool))]
198 async fn insert_activity(
200 activity: serde_json::Value,
204 ) -> Result<bool, LemmyError> {
205 let ap_id = ap_id.to_owned().into();
207 blocking(pool, move |conn| {
208 Activity::insert(conn, ap_id, activity, local, sensitive)