fix $app->system-> calls in system/ but not interface/

interface/lib/classes/functions.inc.php

@@ -472,15 +472,16 @@ class functions {
 		global $app;
 
 		// generate the SSH key pair for the client
-		$app->system->exec_safe('mktemp -dt id_rsa.XXXXXXXX');
-		$tmpdir = $app->system->last_exec_out();
+		if (! $tmpdir = $app->system->exec_safe('mktemp -dt id_rsa.XXXXXXXX')) {
+			$app->log("mktemp failed, cannot create SSH keypair for ".$username, LOGLEVEL_WARN);
+		}
 		$id_rsa_file = $tmpdir . uniqid('',true);
 		$id_rsa_pub_file = $id_rsa_file.'.pub';
 		if(file_exists($id_rsa_file)) unset($id_rsa_file);
 		if(file_exists($id_rsa_pub_file)) unset($id_rsa_pub_file);
 		if(!file_exists($id_rsa_file) && !file_exists($id_rsa_pub_file)) {
 			$app->system->exec_safe('ssh-keygen -t rsa -C ? -f ? -N ""', $username.'-rsa-key-'.time(), $id_rsa_file);
-			$app->db->query("UPDATE client SET created_at = UNIX_TIMESTAMP(), id_rsa = ?, ssh_rsa = ? WHERE client_id = ?", $app->system->file_get_contents($id_rsa_file), $app->system->file_get_contents($id_rsa_pub_file), $client_id);
+			$app->db->query("UPDATE client SET created_at = UNIX_TIMESTAMP(), id_rsa = ?, ssh_rsa = ? WHERE client_id = ?", @file_get_contents($id_rsa_file), @file_get_contents($id_rsa_pub_file), $client_id);
 			$app->system->rmdir($tmpdir, true);
 		} else {
 			$app->log("Failed to create SSH keypair for ".$username, LOGLEVEL_WARN);

interface/lib/classes/system.inc.php

@@ -79,6 +79,32 @@ class system {
 		return false;
 	}
 
+	function rmdir($path, $recursive=false) {
+		// Disallow operating on root directory
+		if(realpath($path) == '/') {
+			$app->log("rmdir: afraid I might delete root: $path", LOGLEVEL_WARN);
+			return false;
+		}
+
+		$path = rtrim($path, '/');
+		if (is_dir($path) && !is_link($path)) {
+			$objects = array_diff(scandir($path), array('.', '..'));
+			foreach ($objects as $object) {
+				if ($recursive) {
+					if (is_dir("$path/$object") && !is_link("$path/$object")) {
+						$this->rmdir("$path/$object", $recursive);
+					} else {
+						unlink ("$path/$object");
+					}
+				} else {
+					$app->log("rmdir: invoked non-recursive, not removing $path (expect rmdir failure)", LOGLEVEL_DEBUG);
+				}
+			}
+			return rmdir($path);
+		}
+		return false;
+	}
+
 	public function last_exec_out() {
 		return $this->_last_exec_out;
 	}