Bug #72088 [Nab]: file_get_contents() return empty in some urls

From: Date: Mon, 25 Apr 2016 17:28:43 +0000
Subject: Bug #72088 [Nab]: file_get_contents() return empty in some urls
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-200776@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=72088&edit=1

 ID:                 72088
 User updated by:    alejosimon at gmail dot com
 Reported by:        alejosimon at gmail dot com
 Summary:            file_get_contents() return empty in some urls
 Status:             Not a bug
 Type:               Bug
 Package:            HTTP related
 Operating System:   Windows 7 x64
 PHP Version:        7.0.5
 Assigned To:        ab
 Block user comment: N
 Private report:     N

 New Comment:

Sure... in my linux (fedora 23 php 7.0.5 x64) also it works well, so I clarify that the problem is
win64 only, but.. but equally it would be prudent to review this difference as a matter of safe
portability between platforms.

Thanks for you help.


Previous Comments:
------------------------------------------------------------------------
[2016-04-25 14:17:20] ab@php.net

Thanks for the check.

Not sure about the x86/x64 diff, i was able to reproduce with both. I guess it's some
environment issue on your side. You should check that it loads the correct OpenSSL, etc.

And, I'd really suggest to report this to the corresponding admins. Even Firefox blocks if I go
to https://afip.gov.ar/ . The encryption there is just insecure.
For the Windows deps, we have no other choice that to follow the security advisory.

With this, time to close.

Thanks

------------------------------------------------------------------------
[2016-04-25 13:34:41] alejosimon at gmail dot com

Hahahaaaaa, sorry for my stupidity ... now it works !!!!!! You were right! THANK YOU VERY MUCH!!!

...but why that difference between x64 and x32 ???

Now results in all versions of PHP:

Array
(
    [0] => HTTP/1.1 200 OK
    [1] => Connection: close
    [2] => Date: Mon, 25 Apr 2016 13:30:01 GMT
    [3] => Server: Microsoft-IIS/6.0
    [4] => MicrosoftOfficeWebServer: 5.0_Pub
    [5] => X-Powered-By: ASP.NET
    [6] => X-AspNet-Version: 2.0.50727
    [7] => Cache-Control: private, max-age=0
    [8] => Content-Type: text/xml; charset=utf-8
    [9] => Content-Length: 24646
)

THANKS 2

------------------------------------------------------------------------
[2016-04-25 13:20:45] ab@php.net

@alejosimon, thanks for staying on this. Yeah, you've used the wrong option. Here's how it
should be:

$url = 'https://wswhomo.afip.gov.ar/wsfe/service.asmx?wsdl'
;

$opts = array(
        "ssl" => array(
                "ciphers" => "TLSv1",
        )
);
$context = stream_context_create($opts);
$response = file_get_contents($url, false, $context);

var_dump( $http_response_header );

Thanks.

------------------------------------------------------------------------
[2016-04-25 13:04:02] alejosimon at gmail dot com

@ab, Sorry, but we still have the error :( My test into TLSv1.0 context.

<?php

error_reporting(E_ALL);
ini_set("display_errors", 1);

$context = stream_context_create(
  array(
    'ssl' => array(
      'protocol_version' => 'tls1',
    ),
  ));

$url = 'https://wswhomo.afip.gov.ar/wsfe/service.asmx?wsdl'
; // FAIL!!!
//$url = 'https://wsaahomo.afip.gov.ar/ws/services/LoginCms?wsdl'
; // OK
//$url = 'https://servicios1.afip.gov.ar/wsfe/service.asmx?wsdl'
; // OK
//$url = 'https://www.google.com.ar' ; // OK

$response = file_get_contents( $url, false, $context );

print_r( $http_response_header );

?>

Result in php 7.0.5 win64:
Array(
)

--------------------------

Result in php 5.6.20 win32:
Array
(
    [0] => HTTP/1.1 200 OK
    [1] => Connection: close
    [2] => Date: Mon, 25 Apr 2016 12:51:29 GMT
    [3] => Server: Microsoft-IIS/6.0
    [4] => MicrosoftOfficeWebServer: 5.0_Pub
    [5] => X-Powered-By: ASP.NET
    [6] => X-AspNet-Version: 2.0.50727
    [7] => Cache-Control: private, max-age=0
    [8] => Content-Type: text/xml; charset=utf-8
    [9] => Content-Length: 24646
)

Thanks!

------------------------------------------------------------------------
[2016-04-25 12:51:45] ab@php.net

@alejosimon, I reproduce with both x86 and x64, and it actually should be so as they have the same
OpenSSL version. We've OpenSSL 1.0.1 in 5.6 vs 1.0.2 in 7.0.

Testing with even earlier 7.0 version with OpenSSL preceding the latest security advisory, the issue
is actually the same. So more about some OpenSSL 1.0.2 behavior change.

You need to create a stream context enforcing TLSv1. IIS6 is a very old and already unsupported
software, so i'd barely see this as a bug anyway. 

Thanks.

------------------------------------------------------------------------


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