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};
7 use url::{ParseError, Url};
10 pub(crate) mod activity_lists;
11 pub(crate) mod collections;
15 pub(crate) mod mentions;
20 /// Checks if the ID is allowed for sending or receiving.
22 /// In particular, it checks for:
23 /// - federation being enabled (if its disabled, only local URLs are allowed)
24 /// - the correct scheme (either http or https)
25 /// - URL being in the allowlist (if it is active)
26 /// - URL not being in the blocklist (if it is active)
28 /// `use_strict_allowlist` should be true only when parsing a remote community, or when parsing a
29 /// post/comment in a local community.
30 pub(crate) fn check_is_apub_id_valid(
32 use_strict_allowlist: bool,
34 ) -> Result<(), LemmyError> {
35 let domain = apub_id.domain().context(location_info!())?.to_string();
36 let local_instance = settings.get_hostname_without_port()?;
38 if !settings.federation.enabled {
39 return if domain == local_instance {
44 "Trying to connect with {}, but federation is 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 return Err(anyhow!("invalid hostname {}: {}", host, apub_id).into());
58 if apub_id.scheme() != settings.get_protocol_string() {
59 return Err(anyhow!("invalid apub id scheme {}: {}", apub_id.scheme(), apub_id).into());
62 // TODO: might be good to put the part above in one method, and below in another
63 // (which only gets called in apub::objects)
64 // -> no that doesnt make sense, we still need the code below for blocklist and strict allowlist
65 if let Some(blocked) = settings.to_owned().federation.blocked_instances {
66 if blocked.contains(&domain) {
67 return Err(anyhow!("{} is in federation blocklist", domain).into());
71 if let Some(mut allowed) = settings.to_owned().federation.allowed_instances {
72 // Only check allowlist if this is a community, or strict allowlist is enabled.
73 let strict_allowlist = settings.to_owned().federation.strict_allowlist;
74 if use_strict_allowlist || strict_allowlist {
75 // need to allow this explicitly because apub receive might contain objects from our local
77 allowed.push(local_instance);
79 if !allowed.contains(&domain) {
80 return Err(anyhow!("{} not in federation allowlist", domain).into());
88 pub enum EndpointType {
96 /// Generates an apub endpoint for a given domain, IE xyz.tld
97 pub fn generate_local_apub_endpoint(
98 endpoint_type: EndpointType,
101 ) -> Result<DbUrl, ParseError> {
102 let point = match endpoint_type {
103 EndpointType::Community => "c",
104 EndpointType::Person => "u",
105 EndpointType::Post => "post",
106 EndpointType::Comment => "comment",
107 EndpointType::PrivateMessage => "private_message",
110 Ok(Url::parse(&format!("{}/{}/{}", domain, point, name))?.into())
113 pub fn generate_followers_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
114 Ok(Url::parse(&format!("{}/followers", actor_id))?.into())
117 pub fn generate_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
118 Ok(Url::parse(&format!("{}/inbox", actor_id))?.into())
121 pub fn generate_shared_inbox_url(actor_id: &DbUrl) -> Result<DbUrl, LemmyError> {
122 let actor_id: Url = actor_id.clone().into();
126 &actor_id.host_str().context(location_info!())?,
127 if let Some(port) = actor_id.port() {
133 Ok(Url::parse(&url)?.into())
136 pub fn generate_outbox_url(actor_id: &DbUrl) -> Result<DbUrl, ParseError> {
137 Ok(Url::parse(&format!("{}/outbox", actor_id))?.into())
140 fn generate_moderators_url(community_id: &DbUrl) -> Result<DbUrl, LemmyError> {
141 Ok(Url::parse(&format!("{}/moderators", community_id))?.into())
144 /// Store a sent or received activity in the database, for logging purposes. These records are not
146 async fn insert_activity(
148 activity: serde_json::Value,
152 ) -> Result<(), LemmyError> {
153 let ap_id = ap_id.to_owned().into();
154 blocking(pool, move |conn| {
155 Activity::insert(conn, ap_id, activity, local, sensitive)