From 2c80ac8acad6d4b0c486d4e5db63ac6e27b3e4ea Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Thu, 9 May 2013 00:02:04 -0500
Subject: [PATCH 1/2] SFTP: Add support for files larger than 2GB

0x7FFFFFFF is about 2GB. To support larger files floating point is used
---
 phpseclib/Net/SFTP.php | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/phpseclib/Net/SFTP.php b/phpseclib/Net/SFTP.php
index caee65fb..69ce9de8 100644
--- a/phpseclib/Net/SFTP.php
+++ b/phpseclib/Net/SFTP.php
@@ -1025,7 +1025,7 @@ class Net_SFTP extends Net_SSH2 {
      */
     function truncate($filename, $new_size)
     {
-        $attr = pack('N3', NET_SFTP_ATTR_SIZE, 0, $new_size);
+        $attr = pack('N3', NET_SFTP_ATTR_SIZE, $new_size / 0x100000000, $new_size);
 
         return $this->_setstat($filename, $attr, false);
     }
@@ -1520,7 +1520,8 @@ class Net_SFTP extends Net_SSH2 {
         $i = 0;
         while ($sent < $size) {
             $temp = $mode & NET_SFTP_LOCAL_FILE ? fread($fp, $sftp_packet_size) : $this->_string_shift($data, $sftp_packet_size);
-            $packet = pack('Na*N3a*', strlen($handle), $handle, 0, $offset + $sent, strlen($temp), $temp);
+            $subtemp = $offset + $sent;
+            $packet = pack('Na*N3a*', strlen($handle), $handle, $subtemp / 0x100000000, $subtemp, strlen($temp), $temp);
             if (!$this->_send_sftp_packet(NET_SFTP_WRITE, $packet)) {
                 fclose($fp);
                 return false;
@@ -1650,7 +1651,7 @@ class Net_SFTP extends Net_SSH2 {
 
         $size = (1 << 20) < $length || $length < 0 ? 1 << 20 : $length;
         while (true) {
-            $packet = pack('Na*N3', strlen($handle), $handle, 0, $offset, $size);
+            $packet = pack('Na*N3', strlen($handle), $handle, $offset / 0x100000000, $offset, $size);
             if (!$this->_send_sftp_packet(NET_SFTP_READ, $packet)) {
                 if ($local_file !== false) {
                     fclose($fp);
@@ -1904,11 +1905,8 @@ class Net_SFTP extends Net_SSH2 {
                     // (0xFFFFFFFF bytes), anyway.  as such, we'll just represent all file sizes that are bigger than
                     // 4GB as being 4GB.
                     extract(unpack('Nupper/Nsize', $this->_string_shift($response, 8)));
-                    if ($upper) {
-                        $attr['size'] = 0xFFFFFFFF;
-                    } else {
-                        $attr['size'] = $size < 0 ? ($size & 0x7FFFFFFF) + 0x80000000 : $size;
-                    }
+                    $attr['size'] = $upper ? 0x100000000 * $upper;
+                    $attr['size']+= $size < 0 ? ($size & 0x7FFFFFFF) + 0x80000000 : $size;
                     break;
                 case NET_SFTP_ATTR_UIDGID: // 0x00000002 (SFTPv3 only)
                     $attr+= unpack('Nuid/Ngid', $this->_string_shift($response, 8));
@@ -2204,4 +2202,4 @@ class Net_SFTP extends Net_SSH2 {
         $this->pwd = false;
         parent::_disconnect($reason);
     }
-}
+}
\ No newline at end of file

From d2d4e89ffc00e8b1cc85d1e0fde007d71b46620d Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@phpbb.com>
Date: Thu, 9 May 2013 13:23:54 -0400
Subject: [PATCH 2/2] SFTP: typo

---
 phpseclib/Net/SFTP.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/phpseclib/Net/SFTP.php b/phpseclib/Net/SFTP.php
index 69ce9de8..7f31079f 100644
--- a/phpseclib/Net/SFTP.php
+++ b/phpseclib/Net/SFTP.php
@@ -1905,7 +1905,7 @@ class Net_SFTP extends Net_SSH2 {
                     // (0xFFFFFFFF bytes), anyway.  as such, we'll just represent all file sizes that are bigger than
                     // 4GB as being 4GB.
                     extract(unpack('Nupper/Nsize', $this->_string_shift($response, 8)));
-                    $attr['size'] = $upper ? 0x100000000 * $upper;
+                    $attr['size'] = $upper ? 0x100000000 * $upper : 0;
                     $attr['size']+= $size < 0 ? ($size & 0x7FFFFFFF) + 0x80000000 : $size;
                     break;
                 case NET_SFTP_ATTR_UIDGID: // 0x00000002 (SFTPv3 only)
@@ -2202,4 +2202,4 @@ class Net_SFTP extends Net_SSH2 {
         $this->pwd = false;
         parent::_disconnect($reason);
     }
-}
\ No newline at end of file
+}