Setting primary GID for users to be created from config. (#89)

Co-authored-by: Romeo Dumitrescu <romeo@drc.ro>

Author: MrDonkey07

src/ES.SFTP/Security/UserManagementService.cs

@@ -71,6 +71,21 @@ private async Task SyncUsersAndGroups()
             await UserUtil.UserDelete(user, false);
         }
 
+        //Create groups as specified by the GID value for each user
+        foreach (var user in config.Users)
+        {
+            if (user.GID.HasValue)
+            {
+                _logger.LogInformation("Processing GID for user '{user}'", user.Username);
+
+                var virtualGroup = $"sftp-gid-{user.GID.Value}";
+                if (!await GroupUtil.GroupExists(virtualGroup))
+                {
+                    _logger.LogDebug("Creating group '{group}' with GID '{gid}'", virtualGroup, user.GID.Value);
+                    await GroupUtil.GroupCreate(virtualGroup, true, user.GID.Value);
+                }
+            }
+        }
 
         foreach (var user in config.Users)
         {
@@ -79,7 +94,7 @@ private async Task SyncUsersAndGroups()
             if (!await UserUtil.UserExists(user.Username))
             {
                 _logger.LogDebug("Creating user '{user}'", user.Username);
-                await UserUtil.UserCreate(user.Username, true);
+                await UserUtil.UserCreate(user.Username, true, user.GID);
                 _logger.LogDebug("Adding user '{user}' to '{group}'", user.Username, SftpUserInventoryGroup);
                 await GroupUtil.GroupAddUser(SftpUserInventoryGroup, user.Username);
             }
@@ -94,19 +109,6 @@ private async Task SyncUsersAndGroups()
                 await UserUtil.UserSetId(user.Username, user.UID.Value);
             }
 
-            if (user.GID.HasValue)
-            {
-                var virtualGroup = $"sftp-gid-{user.GID.Value}";
-                if (!await GroupUtil.GroupExists(virtualGroup))
-                {
-                    _logger.LogDebug("Creating group '{group}' with GID '{gid}'", virtualGroup, user.GID.Value);
-                    await GroupUtil.GroupCreate(virtualGroup, true, user.GID.Value);
-                }
-
-                _logger.LogDebug("Adding user '{user}' to '{group}'", user.Username, virtualGroup);
-                await GroupUtil.GroupAddUser(virtualGroup, user.Username);
-            }
-
             var homeDir = Directory.CreateDirectory(Path.Combine(HomeBasePath, user.Username));
             await ProcessUtil.QuickRun("chown", $"root:root {homeDir.FullName}");
             await ProcessUtil.QuickRun("chmod", $"711 {homeDir.FullName}");

src/ES.SFTP/Security/UserUtil.cs

@@ -10,10 +10,10 @@ public static async Task<bool> UserExists(string username)
         return command.ExitCode == 0 && !string.IsNullOrWhiteSpace(command.Output);
     }
 
-    public static async Task UserCreate(string username, bool noLoginShell = false)
+    public static async Task UserCreate(string username, bool noLoginShell = false, int? gid = null)
     {
         await ProcessUtil.QuickRun("useradd",
-            $"--comment {username} {(noLoginShell ? "-s /usr/sbin/nologin" : string.Empty)} {username}");
+            $"--comment {username} {(noLoginShell ? "-s /usr/sbin/nologin " : string.Empty)}{(gid.HasValue ? "-g " + gid.Value + " " : string.Empty)}{username}");
     }
 
     public static async Task UserDelete(string username, bool throwOnError = true)