Port from Rocket to axum
This commit is contained in:
Jonas Platte
parent
8709c3ae7b
commit
1f7b3fa4ac
52 changed files with 1064 additions and 1885 deletions
338
src/ruma_wrapper/axum.rs
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338
src/ruma_wrapper/axum.rs
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use std::{collections::BTreeMap, iter::FromIterator, str};
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use axum::{
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async_trait,
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body::{Full, HttpBody},
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extract::{FromRequest, RequestParts, TypedHeader},
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headers::{
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authorization::{Bearer, Credentials},
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Authorization,
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},
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response::{IntoResponse, Response},
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BoxError,
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};
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use bytes::{BufMut, Bytes, BytesMut};
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use http::StatusCode;
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use ruma::{
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api::{client::error::ErrorKind, AuthScheme, IncomingRequest, OutgoingResponse},
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signatures::CanonicalJsonValue,
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DeviceId, Outgoing, ServerName, UserId,
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};
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use tracing::{debug, warn};
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use super::{Ruma, RumaResponse};
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use crate::{database::DatabaseGuard, server_server, Error, Result};
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#[async_trait]
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impl<T, B> FromRequest<B> for Ruma<T>
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where
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T: Outgoing,
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T::Incoming: IncomingRequest,
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B: HttpBody + Send,
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B::Data: Send,
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B::Error: Into<BoxError>,
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{
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type Rejection = Error;
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async fn from_request(req: &mut RequestParts<B>) -> Result<Self, Self::Rejection> {
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let metadata = T::Incoming::METADATA;
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let db = DatabaseGuard::from_request(req).await?;
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let auth_header = Option::<TypedHeader<Authorization<Bearer>>>::from_request(req).await?;
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// FIXME: Do this more efficiently
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let query: BTreeMap<String, String> =
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ruma::serde::urlencoded::from_str(req.uri().query().unwrap_or_default())
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.expect("Query to string map deserialization should be fine");
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let token = match &auth_header {
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Some(TypedHeader(Authorization(bearer))) => Some(bearer.token()),
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None => query.get("access_token").map(|tok| tok.as_str()),
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};
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let mut body = Bytes::from_request(req)
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.await
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.map_err(|_| Error::BadRequest(ErrorKind::MissingToken, "Missing token."))?;
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let mut json_body = serde_json::from_slice::<CanonicalJsonValue>(&body).ok();
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let appservices = db.appservice.all().unwrap();
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let appservice_registration = appservices.iter().find(|(_id, registration)| {
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registration
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.get("as_token")
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.and_then(|as_token| as_token.as_str())
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.map_or(false, |as_token| token == Some(as_token))
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});
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let (sender_user, sender_device, sender_servername, from_appservice) =
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if let Some((_id, registration)) = appservice_registration {
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match metadata.authentication {
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AuthScheme::AccessToken | AuthScheme::QueryOnlyAccessToken => {
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let user_id = query.get("user_id").map_or_else(
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|| {
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UserId::parse_with_server_name(
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registration
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.get("sender_localpart")
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.unwrap()
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.as_str()
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.unwrap(),
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db.globals.server_name(),
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)
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.unwrap()
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},
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|s| UserId::parse(s.as_str()).unwrap(),
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);
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if !db.users.exists(&user_id).unwrap() {
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return Err(forbidden());
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}
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// TODO: Check if appservice is allowed to be that user
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(Some(user_id), None, None, true)
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}
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AuthScheme::ServerSignatures => (None, None, None, true),
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AuthScheme::None => (None, None, None, true),
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}
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} else {
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match metadata.authentication {
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AuthScheme::AccessToken | AuthScheme::QueryOnlyAccessToken => {
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let token = match token {
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Some(token) => token,
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_ => return Err(missing_token()),
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};
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match db.users.find_from_token(token).unwrap() {
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None => return Err(unknown_token()),
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Some((user_id, device_id)) => (
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Some(user_id),
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Some(Box::<DeviceId>::from(device_id)),
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None,
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false,
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),
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}
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}
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AuthScheme::ServerSignatures => {
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let TypedHeader(Authorization(x_matrix)) =
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TypedHeader::<Authorization<XMatrix>>::from_request(req)
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.await
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.map_err(|e| {
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warn!("Missing or invalid Authorization header: {}", e);
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forbidden()
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})?;
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let origin_signatures = BTreeMap::from_iter([(
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x_matrix.key.clone(),
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CanonicalJsonValue::String(x_matrix.sig),
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)]);
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let signatures = BTreeMap::from_iter([(
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x_matrix.origin.as_str().to_owned(),
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CanonicalJsonValue::Object(origin_signatures),
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)]);
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let mut request_map = BTreeMap::from_iter([
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(
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"method".to_owned(),
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CanonicalJsonValue::String(req.method().to_string()),
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),
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(
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"uri".to_owned(),
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CanonicalJsonValue::String(req.uri().to_string()),
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),
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(
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"origin".to_owned(),
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CanonicalJsonValue::String(x_matrix.origin.as_str().to_owned()),
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),
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(
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"destination".to_owned(),
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CanonicalJsonValue::String(
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db.globals.server_name().as_str().to_owned(),
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),
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),
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(
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"signatures".to_owned(),
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CanonicalJsonValue::Object(signatures),
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),
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]);
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if let Some(json_body) = &json_body {
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request_map.insert("content".to_owned(), json_body.clone());
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};
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let keys_result = server_server::fetch_signing_keys(
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&db,
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&x_matrix.origin,
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vec![x_matrix.key.to_owned()],
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)
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.await;
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let keys = match keys_result {
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Ok(b) => b,
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Err(e) => {
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warn!("Failed to fetch signing keys: {}", e);
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return Err(forbidden());
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}
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};
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let pub_key_map =
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BTreeMap::from_iter([(x_matrix.origin.as_str().to_owned(), keys)]);
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match ruma::signatures::verify_json(&pub_key_map, &request_map) {
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Ok(()) => (None, None, Some(x_matrix.origin), false),
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Err(e) => {
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warn!(
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"Failed to verify json request from {}: {}\n{:?}",
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x_matrix.origin, e, request_map
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);
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if req.uri().to_string().contains('@') {
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warn!(
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"Request uri contained '@' character. Make sure your \
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reverse proxy gives Conduit the raw uri (apache: use \
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nocanon)"
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);
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}
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return Err(forbidden());
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}
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}
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}
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AuthScheme::None => (None, None, None, false),
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}
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};
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let mut http_request = http::Request::builder().uri(req.uri()).method(req.method());
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*http_request.headers_mut().unwrap() =
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req.headers().expect("Headers already extracted").clone();
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if let Some(CanonicalJsonValue::Object(json_body)) = &mut json_body {
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let user_id = sender_user.clone().unwrap_or_else(|| {
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UserId::parse_with_server_name("", db.globals.server_name())
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.expect("we know this is valid")
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});
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let uiaa_request = json_body
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.get("auth")
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.and_then(|auth| auth.as_object())
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.and_then(|auth| auth.get("session"))
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.and_then(|session| session.as_str())
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.and_then(|session| {
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db.uiaa.get_uiaa_request(
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&user_id,
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&sender_device.clone().unwrap_or_else(|| "".into()),
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session,
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)
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});
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if let Some(CanonicalJsonValue::Object(initial_request)) = uiaa_request {
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for (key, value) in initial_request {
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json_body.entry(key).or_insert(value);
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}
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}
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let mut buf = BytesMut::new().writer();
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serde_json::to_writer(&mut buf, json_body).expect("value serialization can't fail");
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body = buf.into_inner().freeze();
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}
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let http_request = http_request.body(&*body).unwrap();
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debug!("{:?}", http_request);
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let body =
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<T::Incoming as IncomingRequest>::try_from_http_request(http_request).map_err(|e| {
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warn!("{:?}", e);
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bad_json()
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})?;
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Ok(Ruma {
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body,
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sender_user,
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sender_device,
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sender_servername,
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from_appservice,
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json_body,
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})
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}
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}
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fn forbidden() -> Error {
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Error::BadRequest(ErrorKind::Forbidden, "Forbidden.")
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}
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fn unknown_token() -> Error {
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Error::BadRequest(
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ErrorKind::UnknownToken { soft_logout: false },
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"Unknown token.",
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)
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}
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fn missing_token() -> Error {
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Error::BadRequest(ErrorKind::MissingToken, "Missing token.")
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}
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fn bad_json() -> Error {
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Error::BadRequest(ErrorKind::BadJson, "Bad json.")
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}
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struct XMatrix {
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origin: Box<ServerName>,
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key: String, // KeyName?
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sig: String,
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}
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impl Credentials for XMatrix {
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const SCHEME: &'static str = "X-Matrix";
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fn decode(value: &http::HeaderValue) -> Option<Self> {
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debug_assert!(
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value.as_bytes().starts_with(b"X-Matrix "),
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"HeaderValue to decode should start with \"X-Matrix ..\", received = {:?}",
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value,
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);
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let parameters = str::from_utf8(&value.as_bytes()["X-Matrix ".len()..])
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.ok()?
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.trim_start();
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let mut origin = None;
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let mut key = None;
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let mut sig = None;
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for entry in parameters.split_terminator(',') {
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let (name, value) = entry.split_once('=')?;
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// FIXME: Catch multiple fields of the same name
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match name {
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"origin" => origin = Some(value.try_into().ok()?),
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"key" => key = Some(value.to_owned()),
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"sig" => sig = Some(value.to_owned()),
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_ => warn!(
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"Unexpected field `{}` in X-Matrix Authorization header",
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name
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),
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}
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}
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Some(Self {
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origin: origin?,
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key: key?,
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sig: sig?,
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})
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}
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fn encode(&self) -> http::HeaderValue {
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todo!()
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}
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}
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impl<T> IntoResponse for RumaResponse<T>
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where
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T: OutgoingResponse,
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{
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fn into_response(self) -> Response {
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match self.0.try_into_http_response::<BytesMut>() {
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Ok(res) => res.map(BytesMut::freeze).map(Full::new).into_response(),
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Err(_) => StatusCode::INTERNAL_SERVER_ERROR.into_response(),
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}
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}
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}
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