Solved

php chunked encoding post with curl (multipart/formdata)

Posted on 2009-06-29
9
5,201 Views
Last Modified: 2012-05-07
Hi,

I want to submit a form that is multipart/form-data
I try do do it with curl but I get a status 100 response form the server.

Here 's part of the headers:
Accept-Charset: utf-8, utf-16, *;q=0.1 Pragma: no-cache Cache-Control: no-cache Connection: Keep-Alive Transfer-Encoding: chunked Content-Type: multipart/form-data Expect: 100-continue

How can I make it work?

Thank you.
$agent = "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)";

	

	$header = array (

		'Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1',

		'Accept-Language: en,el-GR;q=0.9,el;q=0.8',

		'Accept-Charset: utf-8, utf-16, *;q=0.1',

	 	'Pragma: no-cache',

		'Cache-Control: no-cache',

		'Connection: Keep-Alive',

		'Transfer-Encoding: chunked',

		'Content-Type: multipart/form-data'

		

	);
 

		curl_setopt($ch, CURLOPT_COOKIE, $cookie);

		curl_setopt($ch, CURLOPT_USERAGENT, $agent);

		//curl_setopt($ch, CURLOPT_HEADER, 1);

		curl_setopt($ch, CURLOPT_HTTPHEADER, $header);

	 	curl_setopt($ch, CURLOPT_AUTOREFERER, 1);

		curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);

		curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); 

		curl_setopt($ch, CURLOPT_POST, 1);

		curl_setopt($ch, CURLOPT_POSTFIELDS, $post);

		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,  2);

		curl_setopt($ch, CURLOPT_URL, $url); 

		curl_setopt($ch, CURLINFO_HEADER_OUT, true);

//This is for cookie handling.

		curl_setopt($ch, CURLOPT_HEADERFUNCTION, 'read_header');

		$result = curl_exec ($ch);

		echo curl_error($ch);

		$info = curl_getinfo($ch);

Open in new window

0
Comment
Question by:webspirit
  • 5
  • 4
9 Comments
 
LVL 14

Expert Comment

by:Ionut A. Tudor
ID: 24742185
Why are you using multipart/form-data ? The server gives you status 100 because it expects the data. Multipart/form-data is used for uploading files to web server so if you're not sending any data use simple Content-Type: text/plain
0
 

Author Comment

by:webspirit
ID: 24748718
I tried but it didn't work. I 've captured the headers from the browser with Fiddler and I 'm trying to replicate that. Is there an option for curl to actually do the chunked data enconding itself? I am passing the post data as an assosiative array like it would be in a urlencoded form. Do I have to do the chunked encoding manually?


POST /something HTTP/1.1

User-Agent: Opera/9.80 (Windows NT 6.0; U; en) Presto/2.2.15 Version/10.00

Host: somehost

Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1

Accept-Language: el-GR,el;q=0.9,en;q=0.8

Accept-Charset: iso-8859-1, utf-8, utf-16, *;q=0.1

Accept-Encoding: deflate, gzip, x-gzip, identity, *;q=0

Cookie: somecookies

Cookie2: $Version=1

Connection: Keep-Alive, TE

TE: deflate, gzip, chunked, identity, trailers

Content-Length: 2769

Content-Type: multipart/form-data; boundary=----------dQD6HRmfxrxw49A4m8uERh
 

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="postingKey"
 

SUvjkFNX7Ox53xu9

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="test"
 

OCcOh

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2FsdGVkX.183MTQyN:zE0MrhLOmUpqd3eL60xF19RmCzgs.XkMel5uouI-FnsR6LV0MQXrAwjIYAc"
 

demo

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2FsdGVkX183MTQyNz:E0MmzCsvWniexbzefYS2M.EgNq7gj:A:ChbO9Ug"
 

1

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2FsdGVkX1.83MTQyNzE0MgO7JImRbH7:sehcm.TqM2j.myOIUUZk8KD4A1mSPtghVxQa4iiy0zewJY"
 

11

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2FsdGVkX183MTQyNzE0MmmuIJgGIu2mcNuasDm19ghQU6bL_9qi8qqdEitEQ_3F"
 

some@test.com

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2FsdGVkX183MTQyNzE0MiDJurEL5R3MqyRqtqldkWMO6r4WSng1mWnKrdsLlXBv"
 

C

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2FsdGVkX183MTQyNzE0Mu-m2scEHi44PSRcp77KH3Ezz49IaB_Z89kFyYE08lt3PbA8JhDDMvk"
 

U2FsdGVkX183MTQyNzE0MvCYST-W4nASMwlt1CSfwR9wk0kEQRr6EDBqxe_cKs1tJZRn4gtwcqM

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2FsdGVkX183MTQ.yNzE0MuvRtnZjnOoER2Wrx0WjFPZP-1vTNLkdq7zW:_LB_ujWFK3nLoHwhLSM"
 

U2FsdGVkX183MTQyNzE0MmWorycRBYg5ba_juOUQ-y3Ociu-J8LrSHR8potuzeuc

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2FsdGVkX183MTQyNzE0MtBwYuxmp6mwk.H3N3KFHGrd6dDDwB7YwlaBh78hB2fZC"
 

ds

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="image1"
 

add

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="imgfile1"; filename=""
 
 

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="image2"
 

add

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="imgfile2"; filename=""
 
 

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="image3"
 

add

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="imgfile3"; filename=""
 
 

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="image4"
 

add

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="imgfile4"; filename=""
 
 

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2FsdGVkX183MTQyNzE0Mu-m2scEHi44PSRcp77KH3Ezz49IaB_Z89kFyYE08lt3V1YyrFApuQ8"
 

U2FsdGVkX183MTQyNzE0MvCYST-W4nASMwlt1CSfwR9wk0kEQRr6EDBqxe_cKs1tt3N92akbEm4

------------dQD6HRmfxrxw49A4m8uERh

Content-Disposition: form-data; name="U2Fsd:.GVkX183MTQyNzE0MmWorycRBYg5XFIlxjF:D5DBBqA2R9Jzbqzk88G:q2R77y"
 

Continue

------------dQD6HRmfxrxw49A4m8uERh--

Open in new window

0
 
LVL 14

Expert Comment

by:Ionut A. Tudor
ID: 24751078
Yes every variable you're sending needs to be urlencoded if the form's enctype is application/x-www-form-urlencoded which is the default one. In your case if its multipart/form-data then cURL has its own way to send the file contents. Add the below options it should work
// $post variable needs to contain the local file path that you want to upload

$post = array 

( 

    'type' => 'direct', 

    'userfile[]' => '@C:\full\path\file.txt',

); 
 

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, $post);

Open in new window

0
 

Author Comment

by:webspirit
ID: 24751520
The form contains 10 inputs out of which 4 are files and the rest are normal (text). The files are optional (images). So, do I need to put in the array 4 empty files? And how should I pass the other 6 text variables this way? Make a file for each variable?

Thank you.
0
3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

 
LVL 14

Expert Comment

by:Ionut A. Tudor
ID: 24751788
You just add their local file path like this:

$post = array 

( 

    'type' => 'direct', 

    'userfile[]' => '@C:\full\path\file.txt',

    'userfile[]' => '@C:\full\path\file.jpg',

    'userfile[]' => '@C:\full\path\file2.jpg',

    'userfile[]' => '@C:\full\path\file3.jpg',

); 

Open in new window

0
 

Author Comment

by:webspirit
ID: 24757975
I made a simple form for test purposes. Then I made a php script based on your suggestions.
I still can't make it work :(
It returns nothing and the headers are:

POST /test.php HTTP/1.1 Host: 85.17.135.223 Accept: */* Content-Length: 10448 Expect: 100-continue Content-Type: multipart/form-data; boundary=----------------------------b64cdfea8248

Could you please test it? The form is live at http://85.17.135.223/test.php

Thank you.

// The html form
 

<html>

<body>

<form>

<input type="text" name="a" value="value1" />

<input type="file" name="file1" />

<input type="submit" /> 

</form>

</body>
 

// The actual code for the php script.

$url = 'http://85.17.135.223/test.php';

$file = getcwd().'/'.'step3.php';

$ch = curl_init(); 

curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); 

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, array('type' => 'direct', 'file1'=>"@$file", 'value1'=>'aaaaa1'));

curl_setopt($ch, CURLOPT_URL, $url); 

curl_setopt($ch, CURLINFO_HEADER_OUT, true);

$result = curl_exec ($ch);

echo curl_error($ch);

$info = curl_getinfo($ch);

var_dump($info);

Open in new window

0
 

Author Comment

by:webspirit
ID: 24758004
I just noticed there was an minor error, but it did not had any effect.

This
curl_setopt($ch, CURLOPT_POSTFIELDS, array('type' => 'direct', 'file1'=>"@$file", 'value1'=>'aaaaa1'));

should be replaced by
curl_setopt($ch, CURLOPT_POSTFIELDS, array('type' => 'direct', 'file1'=>"@$file", 'a'=>'aaaaa1'));

Also, I did check the file path, it is correct.
0
 

Author Comment

by:webspirit
ID: 24758064
Also, forgot to mention the full code for the test.php file
<?php
 

if (!empty($_REQUEST)) {

	var_dump ($_REQUEST);

}
 

?>
 

<html>

<body>

<form>

<input type="text" name="a" value="value1" />

<input type="file" name="file1" />

<input type="submit" /> 

</form>

</body>

Open in new window

0
 
LVL 14

Accepted Solution

by:
Ionut A. Tudor earned 500 total points
ID: 24759230
Everything is okay with your script. To access and receive the files you need to locate them with the superglobal $_FILES.
if (isset($_FILES)) {
var_dump ($_FILES);
}
 
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

I've been asked to discuss some of the UX activities that I'm using with my team. Here I will share some details about how we approach UX projects.
Although it can be difficult to imagine, someday your child will have a career of his or her own. He or she will likely start a family, buy a home and start having their own children. So, while being a kid is still extremely important, it’s also …
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
This video teaches users how to migrate an existing Wordpress website to a new domain.

919 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now