server: Improve equality handling in filters

Now the columns are checked and mapped to user columns, to avoid any
ambiguity.

Fixes #341.

server/src/domain/handler.rs

@@ -1,4 +1,4 @@
-use super::error::*;
+use super::{error::*, sql_tables::UserColumn};
 use async_trait::async_trait;
 use serde::{Deserialize, Serialize};
 use std::collections::HashSet;
@@ -201,7 +201,7 @@ pub enum UserRequestFilter {
     Or(Vec<UserRequestFilter>),
     Not(Box<UserRequestFilter>),
     UserId(UserId),
-    Equality(String, String),
+    Equality(UserColumn, String),
     // Check if a user belongs to a group identified by name.
     MemberOf(String),
     // Same, by id.

server/src/domain/ldap/group.rs

@@ -6,11 +6,14 @@ use tracing::{debug, info, instrument, warn};
 use crate::domain::{
     handler::{BackendHandler, Group, GroupRequestFilter, UserId, Uuid},
     ldap::error::LdapError,
+    sql_tables::GroupColumn,
 };
 
 use super::{
     error::LdapResult,
-    utils::{expand_attribute_wildcards, get_user_id_from_distinguished_name, map_field, LdapInfo},
+    utils::{
+        expand_attribute_wildcards, get_user_id_from_distinguished_name, map_group_field, LdapInfo,
+    },
 };
 
 fn get_group_attribute(
@@ -123,11 +126,11 @@ fn convert_group_filter(
                         vec![],
                     )))),
                 },
-                _ => match map_field(field) {
-                    Some("display_name") | Some("user_id") => {
+                _ => match map_group_field(field) {
+                    Some(GroupColumn::DisplayName) => {
                         Ok(GroupRequestFilter::DisplayName(value.to_string()))
                     }
-                    Some("uuid") => Ok(GroupRequestFilter::Uuid(
+                    Some(GroupColumn::Uuid) => Ok(GroupRequestFilter::Uuid(
                         Uuid::try_from(value.as_str()).map_err(|e| LdapError {
                             code: LdapResultCode::InappropriateMatching,
                             message: format!("Invalid UUID: {:#}", e),

server/src/domain/ldap/user.rs

@@ -6,11 +6,12 @@ use tracing::{debug, info, instrument, warn};
 use crate::domain::{
     handler::{BackendHandler, GroupDetails, User, UserId, UserRequestFilter},
     ldap::{error::LdapError, utils::expand_attribute_wildcards},
+    sql_tables::UserColumn,
 };
 
 use super::{
     error::LdapResult,
-    utils::{get_group_id_from_distinguished_name, map_field, LdapInfo},
+    utils::{get_group_id_from_distinguished_name, map_user_field, LdapInfo},
 };
 
 fn get_user_attribute(
@@ -142,17 +143,9 @@ fn convert_user_filter(ldap_info: &LdapInfo, filter: &LdapFilter) -> LdapResult<
                         vec![],
                     )))),
                 },
-                _ => match map_field(field) {
-                    Some(field) => {
-                        if field == "user_id" {
-                            Ok(UserRequestFilter::UserId(UserId::new(value)))
-                        } else {
-                            Ok(UserRequestFilter::Equality(
-                                field.to_string(),
-                                value.clone(),
-                            ))
-                        }
-                    }
+                _ => match map_user_field(field) {
+                    Some(UserColumn::UserId) => Ok(UserRequestFilter::UserId(UserId::new(value))),
+                    Some(field) => Ok(UserRequestFilter::Equality(field, value.clone())),
                     None => {
                         if !ldap_info.ignored_user_attributes.contains(field) {
                             warn!(

server/src/domain/ldap/utils.rs

@@ -2,7 +2,10 @@ use itertools::Itertools;
 use ldap3_proto::LdapResultCode;
 use tracing::{debug, instrument, warn};
 
-use crate::domain::handler::UserId;
+use crate::domain::{
+    handler::UserId,
+    sql_tables::{GroupColumn, UserColumn},
+};
 
 use super::error::{LdapError, LdapResult};
 
@@ -134,17 +137,31 @@ pub fn is_subtree(subtree: &[(String, String)], base_tree: &[(String, String)])
     true
 }
 
-pub fn map_field(field: &str) -> Option<&'static str> {
+pub fn map_user_field(field: &str) -> Option<UserColumn> {
     assert!(field == field.to_ascii_lowercase());
     Some(match field {
-        "uid" => "user_id",
-        "mail" => "email",
-        "cn" | "displayname" => "display_name",
-        "givenname" => "first_name",
-        "sn" => "last_name",
-        "avatar" => "avatar",
-        "creationdate" | "createtimestamp" | "modifytimestamp" => "creation_date",
-        "entryuuid" => "uuid",
+        "uid" | "user_id" | "id" => UserColumn::UserId,
+        "mail" | "email" => UserColumn::Email,
+        "cn" | "displayname" | "display_name" => UserColumn::DisplayName,
+        "givenname" | "first_name" => UserColumn::FirstName,
+        "sn" | "last_name" => UserColumn::LastName,
+        "avatar" => UserColumn::Avatar,
+        "creationdate" | "createtimestamp" | "modifytimestamp" | "creation_date" => {
+            UserColumn::CreationDate
+        }
+        "entryuuid" | "uuid" => UserColumn::Uuid,
+        _ => return None,
+    })
+}
+
+pub fn map_group_field(field: &str) -> Option<GroupColumn> {
+    assert!(field == field.to_ascii_lowercase());
+    Some(match field {
+        "cn" | "displayname" | "uid" | "display_name" => GroupColumn::DisplayName,
+        "creationdate" | "createtimestamp" | "modifytimestamp" | "creation_date" => {
+            GroupColumn::CreationDate
+        }
+        "entryuuid" | "uuid" => GroupColumn::Uuid,
         _ => return None,
     })
 }

server/src/domain/sql_tables.rs

@@ -3,6 +3,7 @@ use super::{
     sql_migrations::{get_schema_version, migrate_from_version, upgrade_to_v1},
 };
 use sea_query::*;
+use serde::{Deserialize, Serialize};
 
 pub use super::sql_migrations::create_group;
 
@@ -51,7 +52,7 @@ impl From<SchemaVersion> for Value {
     }
 }
 
-#[derive(Iden)]
+#[derive(Iden, PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
 pub enum Users {
     Table,
     UserId,
@@ -67,7 +68,9 @@ pub enum Users {
     Uuid,
 }
 
-#[derive(Iden)]
+pub type UserColumn = Users;
+
+#[derive(Iden, PartialEq, Eq, Debug, Serialize, Deserialize, Clone)]
 pub enum Groups {
     Table,
     GroupId,
@@ -76,6 +79,8 @@ pub enum Groups {
     Uuid,
 }
 
+pub type GroupColumn = Groups;
+
 #[derive(Iden)]
 pub enum Memberships {
     Table,

server/src/domain/sql_user_backend_handler.rs

@@ -54,14 +54,10 @@ fn get_user_filter_expr(filter: UserRequestFilter) -> (RequiresGroup, Cond) {
         ),
         Equality(s1, s2) => (
             RequiresGroup(false),
-            if s1 == Users::DisplayName.to_string() {
-                Expr::col((Users::Table, Users::DisplayName))
-                    .eq(s2)
-                    .into_condition()
-            } else if s1 == Users::UserId.to_string() {
+            if s1 == Users::UserId {
                 panic!("User id should be wrapped")
             } else {
-                Expr::expr(Expr::cust(&s1)).eq(s2).into_condition()
+                Expr::col((Users::Table, s1)).eq(s2).into_condition()
             },
         ),
         MemberOf(group) => (
@@ -360,7 +356,9 @@ impl UserBackendHandler for SqlBackendHandler {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use crate::domain::{handler::JpegPhoto, sql_backend_handler::tests::*};
+    use crate::domain::{
+        handler::JpegPhoto, sql_backend_handler::tests::*, sql_tables::UserColumn,
+    };
 
     #[tokio::test]
     async fn test_list_users_no_filter() {
@@ -386,7 +384,7 @@ mod tests {
         let users = get_user_names(
             &fixture.handler,
             Some(UserRequestFilter::Equality(
-                "display_name".to_string(),
+                UserColumn::DisplayName,
                 "display bob".to_string(),
             )),
         )
@@ -400,7 +398,7 @@ mod tests {
         let users = get_user_names(
             &fixture.handler,
             Some(UserRequestFilter::Equality(
-                "first_name".to_string(),
+                UserColumn::FirstName,
                 "first bob".to_string(),
             )),
         )
@@ -432,6 +430,20 @@ mod tests {
         assert_eq!(users, vec!["bob", "patrick"]);
     }
 
+    #[tokio::test]
+    async fn test_list_users_member_of_and_uuid() {
+        let fixture = TestFixture::new().await;
+        let users = get_user_names(
+            &fixture.handler,
+            Some(UserRequestFilter::Or(vec![
+                UserRequestFilter::MemberOf("Best Group".to_string()),
+                UserRequestFilter::Equality(UserColumn::Uuid, "abc".to_string()),
+            ])),
+        )
+        .await;
+        assert_eq!(users, vec!["bob", "patrick"]);
+    }
+
     #[tokio::test]
     async fn test_list_users_member_of_id() {
         let fixture = TestFixture::new().await;
@@ -450,7 +462,7 @@ mod tests {
         get_user_names(
             &fixture.handler,
             Some(UserRequestFilter::Equality(
-                "user_id".to_string(),
+                UserColumn::UserId,
                 "first bob".to_string(),
             )),
         )

server/src/infra/graphql/query.rs

@@ -1,4 +1,8 @@
-use crate::domain::handler::{BackendHandler, GroupDetails, GroupId, UserId};
+use crate::domain::{
+    handler::{BackendHandler, GroupDetails, GroupId, UserId},
+    ldap::utils::map_user_field,
+    sql_tables::UserColumn,
+};
 use juniper::{graphql_object, FieldResult, GraphQLInputObject};
 use serde::{Deserialize, Serialize};
 use tracing::{debug, debug_span, Instrument};
@@ -50,10 +54,14 @@ impl TryInto<DomainRequestFilter> for RequestFilter {
             return Err("Multiple fields specified in request filter".to_string());
         }
         if let Some(e) = self.eq {
-            if e.field.to_lowercase() == "uid" {
+            if let Some(column) = map_user_field(&e.field) {
+                if column == UserColumn::UserId {
                     return Ok(DomainRequestFilter::UserId(UserId::new(&e.value)));
                 }
-            return Ok(DomainRequestFilter::Equality(e.field, e.value));
+                return Ok(DomainRequestFilter::Equality(column, e.value));
+            } else {
+                return Err(format!("Unknown request filter: {}", &e.field));
+            }
         }
         if let Some(c) = self.any {
             return Ok(DomainRequestFilter::Or(
@@ -451,11 +459,8 @@ mod tests {
         mock.expect_list_users()
             .with(
                 eq(Some(UserRequestFilter::Or(vec![
-                    UserRequestFilter::Equality("id".to_string(), "bob".to_string()),
-                    UserRequestFilter::Equality(
-                        "email".to_string(),
-                        "robert@bobbers.on".to_string(),
-                    ),
+                    UserRequestFilter::UserId(UserId::new("bob")),
+                    UserRequestFilter::Equality(UserColumn::Email, "robert@bobbers.on".to_string()),
                 ]))),
                 eq(false),
             )

server/src/infra/ldap_handler.rs

@@ -447,7 +447,7 @@ impl<Backend: BackendHandler + LoginHandler + OpaqueHandler> LdapHandler<Backend
 mod tests {
     use super::*;
     use crate::{
-        domain::{error::Result, handler::*, opaque_handler::*},
+        domain::{error::Result, handler::*, opaque_handler::*, sql_tables::UserColumn},
         uuid,
     };
     use async_trait::async_trait;
@@ -1370,7 +1370,7 @@ mod tests {
             .with(
                 eq(Some(UserRequestFilter::And(vec![UserRequestFilter::Or(
                     vec![UserRequestFilter::Not(Box::new(
-                        UserRequestFilter::Equality("first_name".to_string(), "bob".to_string()),
+                        UserRequestFilter::Equality(UserColumn::FirstName, "bob".to_string()),
                     ))],
                 )]))),
                 eq(false),