editoast: add role management endpoints

Signed-off-by: Leo Valais <leo.valais97@gmail.com>

editoast/editoast_authz/Cargo.toml

@@ -8,6 +8,7 @@ edition.workspace = true
 fixtures = []
 
 [dependencies]
+itertools.workspace = true
 serde = { workspace = true, features = ["derive"] }
 strum.workspace = true
 thiserror.workspace = true

editoast/editoast_authz/src/authorizer.rs

@@ -1,9 +1,10 @@
+use itertools::Itertools as _;
 use std::{collections::HashSet, future::Future, sync::Arc};
 
 use tracing::debug;
 use tracing::Level;
 
-use crate::roles::{BuiltinRoleSet, RoleConfig};
+use crate::roles::{BuiltinRoleSet, RoleConfig, RoleIdentifier};
 
 pub type UserIdentity = String;
 pub type UserName = String;
@@ -47,8 +48,8 @@ pub trait StorageDriver: Clone {
         roles_config: &RoleConfig<Self::BuiltinRole>,
     ) -> impl Future<Output = Result<HashSet<Self::BuiltinRole>, Self::Error>> + Send;
 
-    fn ensure_subject_roles(
-        &self,
+    fn ensure_subject_roles<'a>(
+        &'a self,
         subject_id: i64,
         roles_config: &RoleConfig<Self::BuiltinRole>,
         roles: HashSet<Self::BuiltinRole>,
@@ -100,23 +101,101 @@ impl<S: StorageDriver> Authorizer<S> {
         }
     }
 
+    pub fn user_id(&self) -> i64 {
+        self.user_id
+    }
+
     pub fn is_superuser(&self) -> bool {
         self.roles_config.is_superuser()
     }
 
+    /// Returns whether a user with some id exists
+    #[tracing::instrument(skip_all, fields(user_id = %user_id), ret(level = Level::DEBUG), err)]
+    pub async fn user_exists(&self, user_id: i64) -> Result<bool, S::Error> {
+        self.storage
+            .get_user_info(user_id)
+            .await
+            .map(|x| x.is_some())
+    }
+
     /// Check that the user has all the required builting roles
     #[tracing::instrument(skip_all, fields(user = %self.user, user_roles = ?self.user_roles, ?required_roles), ret(level = Level::DEBUG), err)]
     pub async fn check_roles(
         &self,
         required_roles: HashSet<S::BuiltinRole>,
     ) -> Result<bool, S::Error> {
         if self.is_superuser() {
-            tracing::debug!("role checking skipped for superuser");
+            tracing::warn!("role checking skipped for superuser");
             return Ok(true);
         }
 
         Ok(required_roles.is_subset(&self.user_roles))
     }
+
+    #[tracing::instrument(skip_all, fields(user_id, auth_user = %self.user, user_roles = ?self.user_roles), ret(level = Level::DEBUG), err)]
+    pub async fn infer_application_roles(
+        &self,
+        user_id: i64,
+    ) -> Result<Vec<RoleIdentifier>, S::Error> {
+        if self.is_superuser() {
+            return Ok(self.roles_config.application_roles().cloned().collect_vec());
+        }
+
+        let resolved_roles = &self.roles_config.resolved_roles;
+        let user_roles = self
+            .storage
+            .fetch_subject_roles(user_id, &self.roles_config)
+            .await?;
+
+        let app_roles = resolved_roles
+            .iter()
+            .filter(|(_, builtins)| user_roles.is_superset(builtins))
+            .map(|(app_role, _)| app_role)
+            .cloned()
+            .collect_vec();
+
+        Ok(app_roles)
+    }
+
+    #[tracing::instrument(skip_all, fields(user_id, auth_user = %self.user, user_roles = ?self.user_roles), ret(level = Level::DEBUG), err)]
+    pub async fn user_builtin_roles(
+        &self,
+        user_id: i64,
+    ) -> Result<HashSet<S::BuiltinRole>, S::Error> {
+        let user_roles = self
+            .storage
+            .fetch_subject_roles(user_id, &self.roles_config)
+            .await?;
+        Ok(user_roles.clone())
+    }
+
+    #[tracing::instrument(skip_all, fields(user_id, auth_user = %self.user, ?roles, role_config = ?self.roles_config), ret(level = Level::DEBUG), err)]
+    pub async fn grant_roles(
+        &mut self,
+        user_id: i64,
+        roles: HashSet<S::BuiltinRole>,
+    ) -> Result<(), S::Error> {
+        self.storage
+            .ensure_subject_roles(user_id, &self.roles_config, roles.clone())
+            .await?;
+        self.user_roles.extend(roles);
+        Ok(())
+    }
+
+    #[tracing::instrument(skip_all, fields(user_id, auth_user = %self.user, ?roles, role_config = ?self.roles_config), ret(level = Level::DEBUG), err)]
+    pub async fn strip_roles(
+        &mut self,
+        user_id: i64,
+        roles: HashSet<S::BuiltinRole>,
+    ) -> Result<(), S::Error> {
+        let removed_roles = self
+            .storage
+            .remove_subject_roles(user_id, &self.roles_config, roles.clone())
+            .await?;
+        tracing::debug!(?removed_roles, "removed roles");
+        self.user_roles.retain(|r| !roles.contains(r));
+        Ok(())
+    }
 }
 
 impl<S: StorageDriver> std::fmt::Debug for Authorizer<S> {
@@ -288,5 +367,26 @@ mod tests {
                 .collect();
             Ok(removed_roles)
         }
+
+        async fn get_user_id(&self, user_info: &UserInfo) -> Result<Option<i64>, Self::Error> {
+            self.users
+                .lock()
+                .unwrap()
+                .get(&user_info.identity)
+                .map(|id| Ok(Some(*id)))
+                .unwrap_or_else(|| Ok(None))
+        }
+
+        async fn get_user_info(&self, user_id: i64) -> Result<Option<UserInfo>, Self::Error> {
+            let users = self.users.lock().unwrap();
+            let user_info = users
+                .iter()
+                .find(|(_, id)| **id == user_id)
+                .map(|(identity, _)| UserInfo {
+                    identity: identity.clone(),
+                    name: "Mocked User".to_owned(),
+                });
+            async move { Ok(user_info) }
+        }
     }
 }

editoast/editoast_authz/src/builtin_role.rs

@@ -45,8 +45,15 @@ pub enum BuiltinRole {
     #[strum(serialize = "document:write")]
     DocumentWrite,
 
-}
-
+    #[strum(serialize = "subject:read")]
+    SubjectRead,
+    #[strum(serialize = "subject:write")]
+    SubjectWrite,
+
+    #[strum(serialize = "role:read")]
+    RoleRead,
+    #[strum(serialize = "role:write")]
+    RoleWrite,
 }
 
 impl BuiltinRoleSet for BuiltinRole {}

editoast/editoast_authz/src/roles.rs

@@ -39,14 +39,13 @@ impl<B: BuiltinRoleSet> RoleConfig<B> {
         self.superuser
     }
 
-    pub fn resolve<'r>(
-        &self,
-        app_roles: impl Iterator<Item = &'r RoleIdentifier>,
-    ) -> Result<HashSet<B>, &'r RoleIdentifier> {
+    pub fn resolve<'r>(&self, roles: impl Iterator<Item = &'r str>) -> Result<HashSet<B>, &'r str> {
         let mut resolved = HashSet::new();
-        for role in app_roles {
+        for role in roles {
             if let Some(role) = self.resolved_roles.get(role) {
                 resolved.extend(role.iter().cloned());
+            } else if let Ok(builtin) = B::from_str(role) {
+                resolved.insert(builtin);
             } else {
                 return Err(role);
             }
@@ -126,6 +125,10 @@ impl<B: BuiltinRoleSet> RoleConfig<B> {
         }
         Ok(config)
     }
+
+    pub fn application_roles(&self) -> impl Iterator<Item = &RoleIdentifier> {
+        self.resolved_roles.keys()
+    }
 }
 
 #[derive(Debug, thiserror::Error)]