server: Add support for SubString ldap filter

server/src/domain/ldap/group.rs

@@ -178,6 +178,21 @@ fn convert_group_filter(
                     || map_group_field(field).is_some(),
             ))
         }
+        LdapFilter::Substring(field, substring_filter) => {
+            let field = &field.to_ascii_lowercase();
+            match map_group_field(field.as_str()) {
+                Some(GroupColumn::DisplayName) => Ok(GroupRequestFilter::DisplayNameSubString(
+                    substring_filter.clone().into(),
+                )),
+                _ => Err(LdapError {
+                    code: LdapResultCode::UnwillingToPerform,
+                    message: format!(
+                        "Unsupported group attribute for substring filter: {:?}",
+                        field
+                    ),
+                }),
+            }
+        }
         _ => Err(LdapError {
             code: LdapResultCode::UnwillingToPerform,
             message: format!("Unsupported group filter: {:?}", filter),

server/src/domain/ldap/user.rs

@@ -185,6 +185,28 @@ fn convert_user_filter(ldap_info: &LdapInfo, filter: &LdapFilter) -> LdapResult<
                     || map_user_field(field).is_some(),
             ))
         }
+        LdapFilter::Substring(field, substring_filter) => {
+            let field = &field.to_ascii_lowercase();
+            match map_user_field(field.as_str()) {
+                Some(UserColumn::UserId) => Ok(UserRequestFilter::UserIdSubString(
+                    substring_filter.clone().into(),
+                )),
+                None
+                | Some(UserColumn::CreationDate)
+                | Some(UserColumn::Avatar)
+                | Some(UserColumn::Uuid) => Err(LdapError {
+                    code: LdapResultCode::UnwillingToPerform,
+                    message: format!(
+                        "Unsupported user attribute for substring filter: {:?}",
+                        field
+                    ),
+                }),
+                Some(field) => Ok(UserRequestFilter::SubString(
+                    field,
+                    substring_filter.clone().into(),
+                )),
+            }
+        }
         _ => Err(LdapError {
             code: LdapResultCode::UnwillingToPerform,
             message: format!("Unsupported user filter: {:?}", filter),

server/src/domain/ldap/utils.rs

@@ -1,12 +1,29 @@
 use itertools::Itertools;
-use ldap3_proto::LdapResultCode;
+use ldap3_proto::{proto::LdapSubstringFilter, LdapResultCode};
 use tracing::{debug, instrument, warn};
 
 use crate::domain::{
+    handler::SubStringFilter,
     ldap::error::{LdapError, LdapResult},
     types::{GroupColumn, UserColumn, UserId},
 };
 
+impl From<LdapSubstringFilter> for SubStringFilter {
+    fn from(
+        LdapSubstringFilter {
+            initial,
+            any,
+            final_,
+        }: LdapSubstringFilter,
+    ) -> Self {
+        Self {
+            initial,
+            any,
+            final_,
+        }
+    }
+}
+
 fn make_dn_pair<I>(mut iter: I) -> LdapResult<(String, String)>
 where
     I: Iterator<Item = String>,
@@ -141,8 +158,8 @@ pub fn map_user_field(field: &str) -> Option<UserColumn> {
         "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,
+        "givenname" | "first_name" | "firstname" => UserColumn::FirstName,
+        "sn" | "last_name" | "lastname" => UserColumn::LastName,
         "avatar" | "jpegphoto" => UserColumn::Avatar,
         "creationdate" | "createtimestamp" | "modifytimestamp" | "creation_date" => {
             UserColumn::CreationDate