changing stdErr to stdOut

Adding error handling in the server controller for:
Sudo package is not pre-installed for sudo users.
Server user or associated group is not listed in the sudoers file.
Server user password required

client/core/controllers/serverController.cpp

@@ -770,6 +770,12 @@ ErrorCode ServerController::isUserInSudo(const ServerCredentials &credentials, D
 
     if (!stdOut.contains("sudo"))
         return ErrorCode::ServerUserNotInSudo;
+    if (stdOut.contains("command not found"))
+        return ErrorCode::SudoPackageIsNotPreinstalled;
+    if (stdOut.contains("sudoers"))
+        return ErrorCode::ServerUserNotListedInSudoers;
+    if (stdOut.contains("password is required"))
+        return ErrorCode::ServerUserPasswordRequired;
 
     return error;
 }

client/core/defs.h

@@ -56,6 +56,9 @@ namespace amnezia
         ServerCancelInstallation = 204,
         ServerUserNotInSudo = 205,
         ServerPacketManagerError = 206,
+        SudoPackageIsNotPreinstalled = 207,
+        ServerUserNotListedInSudoers = 208,
+        ServerUserPasswordRequired = 209,
 
         // Ssh connection errors
         SshRequestDeniedError = 300,

client/core/errorstrings.cpp

@@ -21,6 +21,9 @@ QString errorString(ErrorCode code) {
     case(ErrorCode::ServerCancelInstallation): errorMessage = QObject::tr("Installation canceled by user"); break;
     case(ErrorCode::ServerUserNotInSudo): errorMessage = QObject::tr("The user does not have permission to use sudo"); break;
     case(ErrorCode::ServerPacketManagerError): errorMessage = QObject::tr("Server error: Packet manager error"); break;
+    case(ErrorCode::SudoPackageIsNotPreinstalled): errorMessage = QObject::tr("The sudo package is not pre-installed"); break;
+    case(ErrorCode::ServerUserNotListedInSudoers): errorMessage = QObject::tr("The user is not listed in sudoers"); break;
+    case(ErrorCode::ServerUserPasswordRequired): errorMessage = QObject::tr("The user's password is required"); break;
 
     // Libssh errors
     case(ErrorCode::SshRequestDeniedError): errorMessage = QObject::tr("SSH request was denied"); break;

client/server_scripts/check_user_in_sudo.sh

@@ -1,2 +1,3 @@
+echo $LC_MESSAGES | grep -qE "en_US.UTF-8|C.UTF-8" || export LC_MESSAGES=C.UTF-8;\
 CUR_USER=$(whoami);\
-groups $CUR_USER
+groups $CUR_USER | grep sudo && sudo -nu $CUR_USER sudo -n uname > /dev/null