SFTP: add enableDatePreservation() / disableDatePreservation()

phpseclib/Net/SFTP.php

@@ -300,6 +300,16 @@ class Net_SFTP extends Net_SSH2
      */
     var $requestBuffer = array();
 
+    /**
+     * Preserve timestamps on file downloads / uploads
+     *
+     * @see self::get()
+     * @see self::put()
+     * @var bool
+     * @access private
+     */
+    var $preserveTime = false;
+
     /**
      * Default Constructor.
      *
@@ -2136,6 +2146,11 @@ function put($remote_file, $data, $mode = NET_SFTP_STRING, $start = -1, $local_s
         }
 
         if ($mode & NET_SFTP_LOCAL_FILE) {
+            if ($this->preserveTime) {
+                $stat = fstat($fp);
+                $this->touch($remote_file, $stat['mtime'], $stat['atime']);
+            }
+
             fclose($fp);
         }
 
@@ -2353,6 +2368,11 @@ function get($remote_file, $local_file = false, $offset = 0, $length = -1, $prog
 
         if ($fclose_check) {
             fclose($fp);
+
+            if ($this->preserveTime) {
+                $stat = $this->stat($remote_file);
+                touch($local_file, $stat['mtime'], $stat['atime']);
+            }
         }
 
         if (!$this->_close_handle($handle)) {
@@ -3237,4 +3257,24 @@ function _disconnect($reason)
         $this->pwd = false;
         parent::_disconnect($reason);
     }
+
+    /**
+     * Enable Date Preservation
+     *
+     * @access public
+     */
+    function enableDatePreservation()
+    {
+        $this->preserveTime = true;
+    }
+
+    /**
+     * Disable Date Preservation
+     *
+     * @access public
+     */
+    function disableDatePreservation()
+    {
+        $this->preserveTime = false;
+    }
 }