Windows PHP cURL upload not POSTing a file

Question

I am having a peculiar issue with cURL on XAMPP 5.6.8. Using the below code, I am not able to send a file that does exist at the path specified in $tempPath. I am thinking that the cURL library may be getting confused with my path that starts with c:\.

My file is found here: C:\tempFolder\r_4878.tmp

On the linux server, using the exact same code, this does work using /mnt/temp/. Why should there be a difference?

What might be breaking here?

Upload Code

$post = array( 'file_name' => $reportID, 'file_contents'=>'@'.$tempPath.'' );

$return = true;

# set the url that we need to use to upload to each server
$url = "http://server.corp/uploadServer.php";

# curl the file to the remote server
$ch = curl_init( $url );
curl_setopt( $ch, CURLOPT_POST,             true    );
curl_setopt( $ch, CURLOPT_HEADER,           false   );
curl_setopt( $ch, CURLOPT_RETURNTRANSFER,   true    );
curl_setopt( $ch, CURLOPT_TIMEOUT,          240     );
curl_setopt( $ch, CURLOPT_POSTFIELDS,       $post   );
curl_setopt( $ch, CURLOPT_HTTPHEADER, array( 'Accept: application/json' ));

# get the servers respone and decode the json response
$result = json_decode( curl_exec( $ch ) );

$t = array( $url, $tempPath, file_exists( $tempPath ), $result->success, $post, $result );

echo "\r\n".print_r( $t, true )."\r\n\r\n";

curl_close( $ch );

Remote Server

$output['file_exists'] = file_exists( $_FILES["file_contents"]["tmp_name"] );
$output['file_path']   = $fileName.".txt";
$output['tmp_name']    = $_FILES["file_contents"]["tmp_name"];
$output['success']  = move_uploaded_file( $_FILES["file_contents"]["tmp_name"], $fileName.".txt" );

Response

Array
(
    [0] => http://server.corp/uploadServer.php
    [1] => C:\tempFolder\r_4878.tmp
    [2] => 1
    [3] => 
    [4] => Array
        (
            [file_name] => UnitTest25-felix
            [file_contents] => @C:\tempFolder\r_4878.tmp
        )

    [5] => stdClass Object
        (
            [file_name] => UnitTest25-felix
            [file_exists] => 
            [file_path] => UnitTest25-felix.txt
            [tmp_name] => 
            [success] => 
            [generationTime] => 9.70363616943E-5
        )

)

Do a var_dump of $_FILES to see what the server is receiving if anything? — MiltoxBeyond, Jun 23 '15 at 21:06
That is your response not the actual value of the $_FILES array. Maybe it is sending the data as a different/temporary name. Or it may be sending it incorrectly. You can just do `$output['files'] = json_encode($_FILES);` — MiltoxBeyond, Jun 23 '15 at 21:59
You will notice that the `tmp_name` is blank which is what is needed to access the contents. I checked and indeed the contents are not sent using curl on windows. Using cURL on Linux, this works perfectly fine from `/mnt/temp/` — pcnate, Jun 23 '15 at 22:49

score 2 · Accepted Answer · edited May 23 '17 at 11:45

2

I think you are only posting file information .. actual data is not posted. File data needs to be POSTed as multipart.

To debug you may want to create a form and see how that works in Network Tab . It will allow you see specifically how data is sent when using a browser.. Once you see that you will have accurate idea on how to POST the file data.

You should look at Using curl to upload POST data with files

edited May 23 '17 at 11:45

Community

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answered Jun 23 '15 at 21:15

Scalable

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Your client code [ where the problem lies], I-e the code making the curl call has nothing to do with apache. – Scalable Jun 24 '15 at 01:20
1

Except for being executed in php on apache/linux vs xampp/windows. I am not uploading with a browser – pcnate Jun 24 '15 at 01:21
1

Correct .. I am curious to see the actual request, as seen by the web server. As I said earlier it looks like you are only sending the file information. Actual data for file uploads is sent as a multipart request which I don't see in your curl call. Is curl is supposed to convert 'file_contents'=>'@'.$tempPath.'' to file data by reading it .. I don't think so. – Scalable Jun 24 '15 at 01:29
It does on the Linux server – pcnate Jun 24 '15 at 01:30
2

I see .. this is what you need CURLOPT_SAFE_UPLOAD . Depending on your php version .. the field may be set to true or false by default. You need to ensure it is true. – Scalable Jun 24 '15 at 01:49
Add this to your answer. I will test in the morning when I get to the office. – pcnate Jun 24 '15 at 03:11
This pointed me in the right direction. I set `CURLOPT_SAFE_UPLOAD` to false prior to specifying `CURLOPT_POSTFIELDS`. If you update the answer with this info, I choose it. – pcnate Jun 24 '15 at 11:32

Windows PHP cURL upload not POSTing a file

1 Answers1