From ea653e1b012a71d6a194452421bb9cdef2cab827 Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@gmail.com>
Date: Thu, 30 Jul 2020 09:12:23 -0500
Subject: [PATCH] SFTP: add enableDatePreservation() /
 disableDatePreservation()

---
 phpseclib/Net/SFTP.php | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/phpseclib/Net/SFTP.php b/phpseclib/Net/SFTP.php
index 9baca991..da4c0294 100644
--- a/phpseclib/Net/SFTP.php
+++ b/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 @@ class Net_SFTP extends Net_SSH2
         }
 
         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 @@ class Net_SFTP extends Net_SSH2
 
         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 @@ class Net_SFTP extends Net_SSH2
         $this->pwd = false;
         parent::_disconnect($reason);
     }
+
+    /**
+     * Enable Date Preservation
+     *
+     * @access public
+     */
+    function enableDatePreservation()
+    {
+        $this->preserveTime = true;
+    }
+
+    /**
+     * Disable Date Preservation
+     *
+     * @access public
+     */
+    function disableDatePreservation()
+    {
+        $this->preserveTime = false;
+    }
 }