Start authorization route

Cargo.toml

@@ -26,3 +26,4 @@ async-trait = "0.1"
 serde = { version = "1", features = [ "derive" ] }
 file-owner = { version = "0.1" }
 tower-cookies = "0.9"
+url = "2.4"

src/routes/authorize.rs

@@ -0,0 +1,63 @@
+use axum::{
+	RequestPartsExt,
+	extract::{FromRequestParts, State},
+	http::{StatusCode, header::HeaderMap, request::Parts},
+};
+use snafu::prelude::*;
+use url::Url;
+
+use crate::{
+    error::*,
+    state::{RoutableAppState, LoggedInUser},
+    state::sessions::*,
+};
+
+// TODO: Implement as a typed header
+pub struct OriginalURI(Url);
+
+#[async_trait]
+impl FromRequestParts<RoutableAppState> for OriginalURI {
+    type Rejection = Error;
+
+    async fn from_request_parts(parts: &mut Parts, state: &RoutableAppState) -> Result<Self, Self::Rejection> {
+		let headers: HeaderMap = parts.extract().await.unwrap();
+		if let Some(uri) = headers.get("X-Original-URI") {
+			// TODO: error
+			Ok(
+				OriginalURI(Url::parse(uri.to_str().unwrap()).unwrap())
+			)
+	    } else {
+			// TODO: error
+			panic!()
+		}
+	}
+}
+
+impl AsRef<Url> for OriginalURI {
+    fn as_ref(&self) -> &Url {
+        &self.0
+    }
+}
+
+
+#[debug_handler]
+pub async fn route(user: Option<LoggedInUser>, uri: Option<OriginalURI>, state: State<RoutableAppState>) -> StatusCode {
+    if uri.is_none() {
+        panic!();
+    }
+
+    let uri = uri.unwrap();
+    let username = user.map(|u| u.username().clone());
+
+    match state.permissions.ssowat_config() {
+        Ok(conf) => {
+            if conf.user_has_permission_for_uri(username.as_ref(), uri.as_ref()) {
+                StatusCode::OK
+            } else {
+                StatusCode::FORBIDDEN
+            }
+        }, Err(e) => {
+            panic!()
+        }
+    }
+}

src/routes/login.rs

@@ -5,13 +5,12 @@ use axum::{
     RequestExt,
 };
 use axum_typed_multipart::{TryFromMultipart, TypedMultipart};
-use snafu::prelude::*;
-use tower_cookies::{Cookies, Cookie};
+use tower_cookies::Cookies;
 use yunohost_api::{Username, Password};
 
 use crate::{
     error::*,
-    state::{COOKIE_NAME, RoutableAppState, sessions::LoggedInUser},
+    state::{COOKIE_NAME, RoutableAppState, LoggedInUser},
 };
 
 #[derive(Debug, TryFromMultipart, Deserialize)]
@@ -74,7 +73,7 @@ pub async fn route(user: Option<LoggedInUser>, cookies: Cookies, state: State<Ro
         debug!("Login was successful for user {}. Saving cookie now.", &form.username);
         let session = state.sessions.make_session(COOKIE_NAME, &form.username).await;
         cookies.add(session.cookie());
-        Ok(format!("Welcome {}", &form.username))
+        Ok(format!("Welcome {}", session.username()))
     } else {
         debug!("Login failed for user {}", &form.username);
         Ok(format!("Invalid login for {}", &form.username))

src/routes/logout.rs

@@ -1,15 +1,10 @@
-use axum::extract::State;
 use tower_cookies::{Cookies, Cookie};
 
 use std::borrow::Cow;
 
-use crate::state::{
-    COOKIE_NAME,
-    RoutableAppState,
-    sessions::LoggedOutUser,
-};
+use crate::state::LoggedOutUser;
 
-pub async fn route(user: Option<LoggedOutUser>, cookies: Cookies, state: State<RoutableAppState>) -> String {
+pub async fn route(user: Option<LoggedOutUser>, cookies: Cookies) -> String {
     if let Some(user) = user {
         let cookie = user.cookie();
         cookies.remove(Cookie::new(Cow::Owned(cookie.name().to_string()), Cow::Owned(cookie.value().to_string())));

src/routes/mod.rs

@@ -6,6 +6,7 @@ use tower_cookies::CookieManagerLayer;
 
 use crate::state::RoutableAppState;
 
+mod authorize;
 mod index;
 mod login;
 mod logout;
@@ -16,6 +17,7 @@ pub fn router(subpath: Option<String>, state: RoutableAppState) -> Router {
         .route("/", get(index::route))
         .route("/login/", post(login::route))
         .route("/logout/", get(logout::route))
+        .route("/authorize/", get(authorize::route))
         .layer(CookieManagerLayer::new())
         .with_state(state);
     if let Some(p) = subpath {

src/state/login.rs

@@ -0,0 +1,89 @@
+use axum::{
+    extract::FromRequestParts,
+    http::request::Parts,
+    RequestPartsExt,
+};
+use snafu::prelude::*;
+use tower_cookies::Cookies;
+use yunohost_api::Username;
+
+use crate::{
+    error::*,
+    state::{COOKIE_NAME, RoutableAppState, sessions::*},
+};
+
+#[derive(Clone, Debug)]
+pub struct LoggedInUser {
+    username: Username,
+    timestamp: i64,
+}
+
+impl LoggedInUser {
+    pub fn new(username: Username, timestamp: i64) -> LoggedInUser {
+        LoggedInUser {
+            username,
+            timestamp,
+        }
+    }
+
+    pub fn username(&self) -> &Username {
+        &self.username
+    }
+
+    pub fn timestamp(&self) -> i64 {
+        self.timestamp
+    }
+
+
+}
+
+impl From<Session> for LoggedInUser {
+    fn from(s: Session) -> LoggedInUser {
+        LoggedInUser::new(s.username, s.timestamp)
+    }
+}
+
+impl std::fmt::Display for LoggedInUser {
+    fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        self.username.fmt(fmt)
+    }
+}
+
+impl AsRef<Username> for LoggedInUser {
+    fn as_ref(&self) -> &Username {
+        &self.username()
+    }
+}
+
+#[async_trait]
+impl FromRequestParts<RoutableAppState> for LoggedInUser {
+    type Rejection = Error;
+
+    async fn from_request_parts(parts: &mut Parts, state: &RoutableAppState) -> Result<Self, Self::Rejection> {
+        let cookies: Cookies = parts.extract().await.map_err(|_| Error::Cookie)?;
+        trace!("[SESSION:{}/login] Checking if the user has a valid session", COOKIE_NAME);
+        let session_cookie = if let Some(session_cookie) = cookies.get(COOKIE_NAME) {
+            trace!("[SESSION:{}/login] User claims to have a session with cookie: {}", COOKIE_NAME, &session_cookie);
+            session_cookie
+        } else {
+            trace!("[SESSION:{}/login] No current session cookie", COOKIE_NAME);
+            return Err(Error::Session {
+                source: SessionError::NoSession {
+                    cookie_name: COOKIE_NAME.to_string(),
+                }
+            });
+        };
+
+        if let Some(session) = state.sessions.verify_cookie_session(session_cookie.value()).await.context(SessionSnafu)? {
+            debug!("[SESSION:{}/login] User {} resumed session.", COOKIE_NAME, &session.username);
+            return Ok(session.into());
+        } else {
+            trace!("[SESSION:{}/login] User session is invalid or has expired.", COOKIE_NAME);
+            return Err(Error::Session {
+                source: SessionError::InvalidOrExpired {
+                    cookie_name: COOKIE_NAME.to_string(),
+                }
+            });
+        }
+    }
+}

src/state/logout.rs

@@ -0,0 +1,85 @@
+use axum::{
+    extract::FromRequestParts,
+    http::request::Parts,
+    RequestPartsExt,
+};
+use snafu::prelude::*;
+use std::borrow::Cow;
+use tower_cookies::{Cookies, Cookie};
+use yunohost_api::Username;
+
+use crate::{
+    error::*,
+    state::{COOKIE_NAME, RoutableAppState, sessions::*},
+};
+
+pub struct LoggedOutUser(Session);
+
+impl LoggedOutUser {
+    pub fn new(session: Session) -> Self {
+        Self(session)
+    }
+
+    pub fn username(&self) -> &Username {
+        self.0.username()
+    }
+
+    pub fn cookie(&self) -> Cookie {
+        Cookie::build(
+            Cow::Owned(self.0.cookie_name.to_string()),
+            Cow::Owned(self.0.content.to_string()),
+        ).path(
+            Cow::Owned("/".to_string())
+        ).finish()
+    }
+}
+
+impl From<Session> for LoggedOutUser {
+    fn from(s: Session) -> LoggedOutUser {
+        LoggedOutUser::new(s)
+    }
+}
+
+#[async_trait]
+impl FromRequestParts<RoutableAppState> for LoggedOutUser {
+    type Rejection = Error;
+
+    async fn from_request_parts(parts: &mut Parts, state: &RoutableAppState) -> Result<Self, Self::Rejection> {
+        let cookies: Cookies = parts.extract().await.map_err(|_| Error::Cookie)?;
+        trace!("[SESSION:{}/logout] Checking if the user has a valid session", COOKIE_NAME);
+        trace!("{:#?}", parts.headers);
+        let session_cookie = if let Some(session_cookie) = cookies.get(COOKIE_NAME) {
+            trace!("[SESSION:{}/logout] User claims to have a session with cookie: {}", COOKIE_NAME, &session_cookie);
+            session_cookie
+        } else {
+            trace!("[SESSION:{}/logout] No current session cookie", COOKIE_NAME);
+            return Err(Error::Session {
+                source: SessionError::NoSession {
+                    cookie_name: COOKIE_NAME.to_string(),
+                }
+            });
+        };
+
+        if let Some(session) = state.sessions.verify_cookie_session(session_cookie.value()).await.context(SessionSnafu)? {
+            debug!("[SESSION:{}/logout] User {} resumed session, requesting to log out.", COOKIE_NAME, &session.username);
+            if state.sessions.invalidate_session(session.timestamp, &session.content).await {
+                return Ok(session.into());
+            } else {
+                warn!("[SESSION:{}/logout] User {} requested logout but was already logged out. Here's the session:\n{:#?}", COOKIE_NAME, &session.username, &session);
+                warn!("This is probably a race condition but is completely harmless.");
+                return Err(Error::Session {
+                    source: SessionError::InvalidOrExpired {
+                        cookie_name: COOKIE_NAME.to_string(),
+                    }
+                });
+            }
+        } else {
+            trace!("[SESSION:{}/logout] User session is invalid or has expired.", COOKIE_NAME);
+            return Err(Error::Session {
+                source: SessionError::InvalidOrExpired {
+                    cookie_name: COOKIE_NAME.to_string(),
+                }
+            });
+        }
+    }
+}

src/state/mod.rs

@@ -1,12 +1,16 @@
 use snafu::prelude::*;
-use yunohost_api::{YunohostUsers, Username, Password};
+use yunohost_api::{YunohostUsers, Username, Password, YunohostPermissions};
 
 use std::sync::Arc;
 
 use crate::error::*;
 
+pub mod login;
+pub use login::LoggedInUser;
+pub mod logout;
+pub use logout::LoggedOutUser;
 pub mod sessions;
-use sessions::SessionManager;
+pub use sessions::{Session, SessionManager};
 
 pub type RoutableAppState = Arc<AppState>;
 
@@ -15,6 +19,7 @@ pub const COOKIE_NAME: &'static str = "yunohost.ssowat";
 pub struct AppState {
     pub sessions: SessionManager,
     pub users: YunohostUsers,
+    pub permissions: YunohostPermissions,
 }
 
 impl AppState {
@@ -23,6 +28,8 @@ impl AppState {
             sessions: SessionManager::new().context(SessionSnafu)?,
             // Timeout in ms
             users: YunohostUsers::new(500).await.context(YunohostSnafu)?,
+            // TODO: make async
+            permissions: YunohostPermissions::new().context(YunohostSnafu)?,
         })
     }
 

src/state/sessions.rs

@@ -1,20 +1,11 @@
-use axum::{
-    extract::FromRequestParts,
-    http::request::Parts,
-    RequestPartsExt,
-};
 use ring::{hmac,rand};
 use snafu::prelude::*;
 use std::borrow::Cow;
 use tokio::sync::RwLock;
-use tower_cookies::{Cookies, Cookie};
+use tower_cookies::Cookie;
 use yunohost_api::Username;
 
-use crate::{
-    error::*,
-    state::{COOKIE_NAME, RoutableAppState},
-    utils::time::now,
-};
+use crate::utils::time::now;
 
 /// An error related to session management
 #[derive(Debug, Snafu)]
@@ -217,151 +208,3 @@ impl Session {
         ).finish()
     }
 }
-
-#[derive(Clone, Debug)]
-pub struct LoggedInUser {
-    username: Username,
-    timestamp: i64,
-}
-
-impl LoggedInUser {
-    pub fn new(username: Username, timestamp: i64) -> LoggedInUser {
-        LoggedInUser {
-            username,
-            timestamp,
-        }
-    }
-
-    pub fn as_str(&self) -> &str {
-        self.username.as_str()
-    }
-
-    pub fn username(&self) -> &Username {
-        &self.username
-    }
-
-    pub fn timestamp(&self) -> i64 {
-        self.timestamp
-    }
-
-
-}
-
-impl From<Session> for LoggedInUser {
-    fn from(s: Session) -> LoggedInUser {
-        LoggedInUser {
-            username: s.username,
-            timestamp: s.timestamp,
-        }
-    }
-}
-
-impl std::fmt::Display for LoggedInUser {
-    fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        self.username.fmt(fmt)
-    }
-}
-
-#[async_trait]
-impl FromRequestParts<RoutableAppState> for LoggedInUser {
-    type Rejection = Error;
-
-    async fn from_request_parts(parts: &mut Parts, state: &RoutableAppState) -> Result<Self, Self::Rejection> {
-        let cookies: Cookies = parts.extract().await.map_err(|_| Error::Cookie)?;
-        trace!("[SESSION:{}/login] Checking if the user has a valid session", COOKIE_NAME);
-        let session_cookie = if let Some(session_cookie) = cookies.get(COOKIE_NAME) {
-            trace!("[SESSION:{}/login] User claims to have a session with cookie: {}", COOKIE_NAME, &session_cookie);
-            session_cookie
-        } else {
-            trace!("[SESSION:{}/login] No current session cookie", COOKIE_NAME);
-            return Err(Error::Session {
-                source: SessionError::NoSession {
-                    cookie_name: COOKIE_NAME.to_string(),
-                }
-            });
-        };
-
-        if let Some(session) = state.sessions.verify_cookie_session(session_cookie.value()).await.context(SessionSnafu)? {
-            debug!("[SESSION:{}/login] User {} resumed session.", COOKIE_NAME, &session.username);
-            return Ok(session.into());
-        } else {
-            trace!("[SESSION:{}/login] User session is invalid or has expired.", COOKIE_NAME);
-            return Err(Error::Session {
-                source: SessionError::InvalidOrExpired {
-                    cookie_name: COOKIE_NAME.to_string(),
-                }
-            });
-        }
-    }
-}
-
-pub struct LoggedOutUser(Session);
-
-impl LoggedOutUser {
-    pub fn new(session: Session) -> Self {
-        Self(session)
-    }
-
-    pub fn username(&self) -> &Username {
-        self.0.username()
-    }
-
-    pub fn cookie(&self) -> Cookie {
-        Cookie::build(
-            Cow::Owned(self.0.cookie_name.to_string()),
-            Cow::Owned(self.0.content.to_string()),
-        ).path(
-            Cow::Owned("/".to_string())
-        ).finish()
-    }
-}
-
-impl From<Session> for LoggedOutUser {
-    fn from(s: Session) -> LoggedOutUser {
-        LoggedOutUser(s)
-    }
-}
-
-#[async_trait]
-impl FromRequestParts<RoutableAppState> for LoggedOutUser {
-    type Rejection = Error;
-
-    async fn from_request_parts(parts: &mut Parts, state: &RoutableAppState) -> Result<Self, Self::Rejection> {
-        let cookies: Cookies = parts.extract().await.map_err(|_| Error::Cookie)?;
-        trace!("[SESSION:{}/logout] Checking if the user has a valid session", COOKIE_NAME);
-        trace!("{:#?}", parts.headers);
-        let session_cookie = if let Some(session_cookie) = cookies.get(COOKIE_NAME) {
-            trace!("[SESSION:{}/logout] User claims to have a session with cookie: {}", COOKIE_NAME, &session_cookie);
-            session_cookie
-        } else {
-            trace!("[SESSION:{}/logout] No current session cookie", COOKIE_NAME);
-            return Err(Error::Session {
-                source: SessionError::NoSession {
-                    cookie_name: COOKIE_NAME.to_string(),
-                }
-            });
-        };
-
-        if let Some(session) = state.sessions.verify_cookie_session(session_cookie.value()).await.context(SessionSnafu)? {
-            debug!("[SESSION:{}/logout] User {} resumed session, requesting to log out.", COOKIE_NAME, &session.username);
-            if state.sessions.invalidate_session(session.timestamp, &session.content).await {
-                return Ok(session.into());
-            } else {
-                warn!("[SESSION:{}/logout] User {} requested logout but was already logged out. Here's the session:\n{:#?}", COOKIE_NAME, &session.username, &session);
-                warn!("This is probably a race condition but is completely harmless.");
-                return Err(Error::Session {
-                    source: SessionError::InvalidOrExpired {
-                        cookie_name: COOKIE_NAME.to_string(),
-                    }
-                });
-            }
-        } else {
-            trace!("[SESSION:{}/logout] User session is invalid or has expired.", COOKIE_NAME);
-            return Err(Error::Session {
-                source: SessionError::InvalidOrExpired {
-                    cookie_name: COOKIE_NAME.to_string(),
-                }
-            });
-        }
-    }
-}

ssowat.toml

@@ -0,0 +1,3 @@
+socket = /tmp/ssowat.socket
+socket_group = www-data
+socket_mode = "0o770"

yunohost-api/src/permissions/ssowat.rs

@@ -1,3 +1,4 @@
+use regex::Regex;
 use serde::{Serialize, Deserialize};
 use url::Url;
 
@@ -23,12 +24,58 @@ impl SSOWatConfig {
                 // Domain not managed
                 return None;
             }
+
+            // Strip protocol but keep full URL
+            let stripped_uri = AsRef::<str>::as_ref(uri)
+                .trim_start_matches("http")
+                .trim_start_matches("s")
+                .trim_start_matches("://");
+
+            // Check which app matches this URI, to find corresponding permission
+            for (key, val) in &self.permissions {
+                for uri_format in &val.uris {
+                    if uri_format.starts_with("re:") {
+                        let uri_format = uri_format.trim_start_matches("re:");
+                        // TODO: generate regex in advance
+                        // TODO: error
+                        let re = Regex::new(uri_format).unwrap();
+                        if re.is_match(stripped_uri) {
+                            return Some(key.clone());
+                        }
+                    } else {
+                        if stripped_uri.starts_with(uri_format) {
+                            return Some(key.clone());
+                        }
+                    }
+                }
+            }
+
+            // No app URI matched
+            return None;
         } else {
             // No domain (eg. http://8.8.8.8/)
             return None;
         }
 
-        todo!();
+    }
+
+    pub fn user_has_permission_for_uri(&self, username: Option<&Username>, uri: &Url) -> bool {
+        if let Some(permission_name) = self.permission_for_uri(uri) {
+            let permission = self.permissions.get(&permission_name).unwrap();
+            if permission.public {
+                return true;
+            }
+
+            if let Some(username) = username {
+                permission.users.contains(username)
+            } else {
+                // User is not logged-in. Non-public URIs are not authorized
+                false
+            }
+        } else {
+            // No permission matching this URI
+            false
+        }
     }
 }