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Bug #75261 cURL sftp regression
Submitted: 2017-09-26 14:37 UTC Modified: 2017-09-26 15:01 UTC
From: b dot collin at immanens dot com Assigned:
Status: Closed Package: cURL related
PHP Version: 7.1.9 OS: Windows
Private report: No CVE-ID: None
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From: b dot collin at immanens dot com
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 [2017-09-26 14:37 UTC] b dot collin at immanens dot com 
Description:
------------
I think that php 7.1 introduce a curl regression with the sftp protocol.

Below, a short script that work in php until 7.0.x, and produce an error message "Could not resolve host: xxxxx" where xxxxx is the username and not the host !

I check several version, php <= 7.0.x seem to be ok.
php 7.1.9, 7.1.10RC1 and 7.2.0RC2 are ko.

Test script:
---------------
$host = 'myhost.sftphost.test:22';
$user = 'myuser';
$password = 'mypassword';
$path = '/path/toexplore/';

$c = curl_init('sftp://'.$user.':'.$password.'@'.$host.$path);
curl_setopt($c, CURLOPT_PROTOCOLS, CURLPROTO_SFTP);
curl_setopt($c, CURLOPT_FTPLISTONLY, true);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
$data = curl_exec($c);
print "curl message : ".curl_error($c)."\n";
print "data : ".var_dump($data);

Expected result:
----------------
If the config is ok, we should obtain the list of file from the sftp server whithout error.

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 [2017-09-26 14:42 UTC] spam2 at rhsoft dot net 
why don#t you use CURLOPT_USERPWD which is excatly designed for that usecase and leave curl_init() alone? that below is a snippet from a with 5.6, 7.0, 7.1 and 7.2 working wrapper library written long ago to replace pecl-ssh2

 public function connect(): bool
 {
  try
  {
   $options =
   [
    CURLOPT_PROTOCOLS => CURLPROTO_SFTP,
    CURLOPT_PORT => $this->port,
    CURLOPT_USERPWD => "$this->user:$this->pwd",
    CURLOPT_RETURNTRANSFER => 1,
   ];
   $this->curl = curl_init();
   curl_setopt_array($this->curl, $options);
   if($this->curl)
   {
    return true;
   }
   else
   {
    return false;
   }
  }
  catch(Throwable $e)
  {
   return false;
  }
 }
 [2017-09-26 14:59 UTC] b dot collin at immanens dot com 
Ok.

I have test with CURLOPT_USERPWD, but don't change the CURLOPT_PORT... 

It work now. Either I fail my test, or the host:port syntax is not yet supported too.

The change seem to happen between 7.0.4 and 7.0.18

The new way work in 7.1.x

Thank you
 [2017-09-26 15:01 UTC] b dot collin at immanens dot com
-Status: Open +Status: Closed
 [2017-09-26 15:01 UTC] b dot collin at immanens dot com 
It has to be done with a new way
 
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