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Bug #79019 Copied cURL handles upload empty file
Submitted: 2019-12-23 08:49 UTC Modified: 2019-12-23 08:49 UTC
From: cmb@php.net Assigned: cmb (profile)
Status: Closed Package: cURL related
PHP Version: 7.4Git-2019-12-23 (Git) OS: *
Private report: No CVE-ID: None
 [2019-12-23 08:49 UTC] cmb@php.net
Description:
------------
If a cURL handle which has a CURLFile attached as post field is
copied via curl_copy_handle(), the file upload can only succeed
the first time it is executed; subsequent executions of the handle
copies will upload an empty file.

The problem is that the current implementation of request #77711
opens the stream and attaches it to the cURL handle; on the first
upload the stream is completely read, but not rewound afterwards
(what is not generally possible, anyway), so subsequent uploads
only see an empty stream.


Test script:
---------------
Apply the following patch:

 ext/curl/tests/responder/get.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/curl/tests/responder/get.inc b/ext/curl/tests/responder/get.inc
index f9269745f6..64ab267d50 100644
--- a/ext/curl/tests/responder/get.inc
+++ b/ext/curl/tests/responder/get.inc
@@ -28,7 +28,7 @@
       break;
     case 'file':
       if (isset($_FILES['file'])) {
-          echo $_FILES['file']['name'] . '|' . $_FILES['file']['type'];
+          echo $_FILES['file']['name'] . '|' . $_FILES['file']['type'] . '|' . $_FILES['file']['size'];
       }
       break;
     case 'method':

And run ext/curl/tests/curl_copy_handle_variation3.phpt


Expected result:
----------------
bool(true)
string(37) "АБВ.txt|application/octet-stream|5"
string(37) "АБВ.txt|application/octet-stream|5"
===DONE===


Actual result:
--------------
bool(true)
string(37) "АБВ.txt|application/octet-stream|5"
string(37) "АБВ.txt|application/octet-stream|0"
===DONE===


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History

AllCommentsChangesGit/SVN commitsRelated reports
 [2019-12-23 08:49 UTC] cmb@php.net
-Assigned To: +Assigned To: cmb
 [2019-12-31 10:14 UTC] cmb@php.net
The following pull request has been associated:

Patch Name: Fix #79019: Copied cURL handles upload empty file
On GitHub:  https://github.com/php/php-src/pull/5045
Patch:      https://github.com/php/php-src/pull/5045.patch
 [2020-02-04 10:31 UTC] cmb@php.net
Automatic comment on behalf of cmbecker69@gmx.de
Revision: http://git.php.net/?p=php-src.git;a=commit;h=2d0dec91a53bddbf9f9e09d9c58188515907d650
Log: Fix #79019: Copied cURL handles upload empty file
 [2020-02-04 10:31 UTC] cmb@php.net
-Status: Assigned +Status: Closed
 
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