server: Add modifyTimestamp and pwdChangedTime attributes (#1265)

Add a modifyTimestamp attribute to LDAP entries for users and groups, and expose pwdChangedTime for users.
These attributes let clients track when an entry (or its password) was last changed.

 -  modifyTimestamp is a server-maintained attribute that updates on any write to user or group entries, including membership changes (on the group side).

 -  pwdChangedTime is set when a user’s password is created or changed.

crates/domain-model/src/model/groups.rs

@@ -14,6 +14,7 @@ pub struct Model {
     pub lowercase_display_name: String,
     pub creation_date: chrono::NaiveDateTime,
     pub uuid: Uuid,
+    pub modified_date: chrono::NaiveDateTime,
 }
 
 #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
@@ -39,6 +40,7 @@ impl From<Model> for lldap_domain::types::Group {
             uuid: group.uuid,
             users: vec![],
             attributes: Vec::new(),
+            modified_date: group.modified_date,
         }
     }
 }
@@ -51,6 +53,7 @@ impl From<Model> for lldap_domain::types::GroupDetails {
             creation_date: group.creation_date,
             uuid: group.uuid,
             attributes: Vec::new(),
+            modified_date: group.modified_date,
         }
     }
 }

crates/domain-model/src/model/users.rs

@@ -21,6 +21,8 @@ pub struct Model {
     pub totp_secret: Option<String>,
     pub mfa_type: Option<String>,
     pub uuid: Uuid,
+    pub modified_date: chrono::NaiveDateTime,
+    pub password_modified_date: chrono::NaiveDateTime,
 }
 
 impl EntityName for Entity {
@@ -40,6 +42,8 @@ pub enum Column {
     TotpSecret,
     MfaType,
     Uuid,
+    ModifiedDate,
+    PasswordModifiedDate,
 }
 
 impl ColumnTrait for Column {
@@ -56,6 +60,8 @@ impl ColumnTrait for Column {
             Column::TotpSecret => ColumnType::String(StringLen::N(64)),
             Column::MfaType => ColumnType::String(StringLen::N(64)),
             Column::Uuid => ColumnType::String(StringLen::N(36)),
+            Column::ModifiedDate => ColumnType::DateTime,
+            Column::PasswordModifiedDate => ColumnType::DateTime,
         }
         .def()
     }
@@ -121,6 +127,8 @@ impl From<Model> for lldap_domain::types::User {
             creation_date: user.creation_date,
             uuid: user.uuid,
             attributes: Vec::new(),
+            modified_date: user.modified_date,
+            password_modified_date: user.password_modified_date,
         }
     }
 }