use crate::fetcher::post_or_comment::PostOrComment;
-use anyhow::{anyhow, Context};
-use lemmy_api_common::blocking;
-use lemmy_db_schema::{newtypes::DbUrl, source::activity::Activity, DbPool};
-use lemmy_utils::{location_info, settings::structs::Settings, LemmyError};
-use serde::{Deserialize, Deserializer};
-use std::net::IpAddr;
+use activitypub_federation::{
+ core::signatures::PublicKey,
+ traits::{Actor, ApubObject},
+ InstanceSettingsBuilder,
+ LocalInstance,
+};
+use anyhow::Context;
+use lemmy_api_common::utils::blocking;
+use lemmy_db_schema::{newtypes::DbUrl, source::activity::Activity, utils::DbPool};
+use lemmy_utils::{
+ error::LemmyError,
+ location_info,
+ settings::{structs::Settings, SETTINGS},
+};
+use lemmy_websocket::LemmyContext;
+use once_cell::sync::{Lazy, OnceCell};
use url::{ParseError, Url};
pub mod activities;
pub(crate) mod activity_lists;
pub(crate) mod collections;
-mod context;
pub mod fetcher;
pub mod http;
pub(crate) mod mentions;
-pub mod migrations;
pub mod objects;
pub mod protocol;
+static CONTEXT: Lazy<Vec<serde_json::Value>> = Lazy::new(|| {
+ serde_json::from_str(include_str!("../assets/lemmy/context.json")).expect("parse context")
+});
+
+// TODO: store this in context? but its only used in this crate, no need to expose it elsewhere
+fn local_instance(context: &LemmyContext) -> &'static LocalInstance {
+ static LOCAL_INSTANCE: OnceCell<LocalInstance> = OnceCell::new();
+ LOCAL_INSTANCE.get_or_init(|| {
+ let settings = InstanceSettingsBuilder::default()
+ .http_fetch_retry_limit(context.settings().federation.http_fetch_retry_limit)
+ .worker_count(context.settings().federation.worker_count)
+ .debug(context.settings().federation.debug)
+ // TODO No idea why, but you can't pass context.settings() to the verify_url_function closure
+ // without the value getting captured.
+ .verify_url_function(|url| check_apub_id_valid(url, &SETTINGS))
+ .build()
+ .expect("configure federation");
+ LocalInstance::new(
+ context.settings().hostname.to_owned(),
+ context.client().clone(),
+ settings,
+ )
+ })
+}
+
/// Checks if the ID is allowed for sending or receiving.
///
/// In particular, it checks for:
/// `use_strict_allowlist` should be true only when parsing a remote community, or when parsing a
/// post/comment in a local community.
#[tracing::instrument(skip(settings))]
-pub(crate) fn check_is_apub_id_valid(
- apub_id: &Url,
- use_strict_allowlist: bool,
- settings: &Settings,
-) -> Result<(), LemmyError> {
- let domain = apub_id.domain().context(location_info!())?.to_string();
- let local_instance = settings.get_hostname_without_port()?;
-
- if !settings.federation.enabled {
- return if domain == local_instance {
- Ok(())
- } else {
- let err = anyhow!(
- "Trying to connect with {}, but federation is disabled",
- domain
- );
- Err(LemmyError::from_error_message(err, "federation_disabled"))
- };
+fn check_apub_id_valid(apub_id: &Url, settings: &Settings) -> Result<(), &'static str> {
+ let domain = apub_id.domain().expect("apud id has domain").to_string();
+ let local_instance = settings
+ .get_hostname_without_port()
+ .expect("local hostname is valid");
+ if domain == local_instance {
+ return Ok(());
}
- let host = apub_id.host_str().context(location_info!())?;
- let host_as_ip = host.parse::<IpAddr>();
- if host == "localhost" || host_as_ip.is_ok() {
- let err = anyhow!("invalid hostname {}: {}", host, apub_id);
- return Err(LemmyError::from_error_message(err, "invalid_hostname"));
+ if !settings.federation.enabled {
+ return Err("Federation disabled");
}
if apub_id.scheme() != settings.get_protocol_string() {
- let err = anyhow!("invalid apub id scheme {}: {}", apub_id.scheme(), apub_id);
- return Err(LemmyError::from_error_message(err, "invalid_scheme"));
+ return Err("Invalid protocol scheme");
}
- // TODO: might be good to put the part above in one method, and below in another
- // (which only gets called in apub::objects)
- // -> no that doesnt make sense, we still need the code below for blocklist and strict allowlist
if let Some(blocked) = settings.to_owned().federation.blocked_instances {
if blocked.contains(&domain) {
- let err = anyhow!("{} is in federation blocklist", domain);
- return Err(LemmyError::from_error_message(err, "federation_blocked"));
+ return Err("Domain is blocked");
}
}
+ if let Some(allowed) = settings.to_owned().federation.allowed_instances {
+ if !allowed.contains(&domain) {
+ return Err("Domain is not in allowlist");
+ }
+ }
+
+ Ok(())
+}
+
+#[tracing::instrument(skip(settings))]
+pub(crate) fn check_apub_id_valid_with_strictness(
+ apub_id: &Url,
+ is_strict: bool,
+ settings: &Settings,
+) -> Result<(), LemmyError> {
+ check_apub_id_valid(apub_id, settings).map_err(LemmyError::from_message)?;
+ let domain = apub_id.domain().expect("apud id has domain").to_string();
+ let local_instance = settings
+ .get_hostname_without_port()
+ .expect("local hostname is valid");
+ if domain == local_instance {
+ return Ok(());
+ }
+
if let Some(mut allowed) = settings.to_owned().federation.allowed_instances {
// Only check allowlist if this is a community, or strict allowlist is enabled.
let strict_allowlist = settings.to_owned().federation.strict_allowlist;
- if use_strict_allowlist || strict_allowlist {
+ if is_strict || strict_allowlist {
// need to allow this explicitly because apub receive might contain objects from our local
// instance.
allowed.push(local_instance);
if !allowed.contains(&domain) {
- let err = anyhow!("{} not in federation allowlist", domain);
- return Err(LemmyError::from_error_message(
- err,
- "federation_not_allowed",
+ return Err(LemmyError::from_message(
+ "Federation forbidden by strict allowlist",
));
}
}
}
-
Ok(())
}
-pub(crate) fn deserialize_one_or_many<'de, T, D>(deserializer: D) -> Result<Vec<T>, D::Error>
-where
- T: Deserialize<'de>,
- D: Deserializer<'de>,
-{
- #[derive(Deserialize)]
- #[serde(untagged)]
- enum OneOrMany<T> {
- One(T),
- Many(Vec<T>),
- }
-
- let result: OneOrMany<T> = Deserialize::deserialize(deserializer)?;
- Ok(match result {
- OneOrMany::Many(list) => list,
- OneOrMany::One(value) => vec![value],
- })
-}
-
-pub(crate) fn deserialize_one<'de, T, D>(deserializer: D) -> Result<[T; 1], D::Error>
-where
- T: Deserialize<'de>,
- D: Deserializer<'de>,
-{
- #[derive(Deserialize)]
- #[serde(untagged)]
- enum MaybeArray<T> {
- Simple(T),
- Array([T; 1]),
- }
-
- let result: MaybeArray<T> = Deserialize::deserialize(deserializer)?;
- Ok(match result {
- MaybeArray::Simple(value) => [value],
- MaybeArray::Array(value) => value,
- })
-}
-
pub enum EndpointType {
Community,
Person,
.await??,
)
}
+
+/// Common methods provided by ActivityPub actors (community and person). Not all methods are
+/// implemented by all actors.
+pub trait ActorType: Actor + ApubObject {
+ fn actor_id(&self) -> Url;
+
+ fn private_key(&self) -> Option<String>;
+
+ fn get_public_key(&self) -> PublicKey {
+ PublicKey::new_main_key(self.actor_id(), self.public_key().to_string())
+ }
+}
projects / lemmy.git / blobdiff