Uploading file to facebook group with cURL

[Czworan]

Hi.

I'm working on some program. It adds new posts to facebook profiles, fanpages and groups. Everything works well, but when I want to create image uploading it just doesn't work (whitepage as result + file probably isn't even send, because of very short sending time).

 

Multipart form sniffed with Firefox looks like this.

 

 

Content-Type: multipart/form-data; boundary=---------------------------13742240526862
Content-Length: 788662

-----------------------------13742240526862
Content-Disposition: form-data; name="fb_dtsg"

AQGlrKAR9le4
-----------------------------13742240526862
Content-Disposition: form-data; name="charset_test"

â¬,´,â¬,´,æ°´,Ð,Ð
-----------------------------13742240526862
Content-Disposition: form-data; name="file1"; filename="h.jpg"
Content-Type: image/jpeg

FILE_CONTENTS_HERE

-----------------------------13742240526862
Content-Disposition: form-data; name="file2"; filename=""
Content-Type: application/octet-stream


-----------------------------13742240526862
Content-Disposition: form-data; name="file3"; filename=""
Content-Type: application/octet-stream


-----------------------------13742240526862
Content-Disposition: form-data; name="caption"


-----------------------------13742240526862
Content-Disposition: form-data; name="return_uri"

/groups/880573151971764?view=group&fc=photo_upload_success
-----------------------------13742240526862
Content-Disposition: form-data; name="return_uri_error"

https://m.facebook.com/photos/upload/?target_id=880573151971764&upload_source=composer&cwevent=intent_media&ctype=inline&referrer=group&session_id=5f737e58-0e23-4270-a8af-8bfa1100f3c5&refid=18
-----------------------------13742240526862
Content-Disposition: form-data; name="target"

880573151971764
-----------------------------13742240526862
Content-Disposition: form-data; name="ref"

m_upload_pic
-----------------------------13742240526862
Content-Disposition: form-data; name="album_fbid"


-----------------------------13742240526862
Content-Disposition: form-data; name="csid"

5f737e58-0e23-4270-a8af-8bfa1100f3c5
-----------------------------13742240526862
Content-Disposition: form-data; name="ctype"

advanced
-----------------------------13742240526862
Content-Disposition: form-data; name="referrer"

group
-----------------------------13742240526862
Content-Disposition: form-data; name="is_old_composer"

1
-----------------------------13742240526862--

 

 

 

 

I'm loading form to get all inputs and I'm using it as post_parameters for cURL. I'm replacing file1 with filename which is in same directory with PHP file.

 

My $post_params looks like this.

 fb_dtsg=AQH8uaMrlc1w&charset_test=âŹ,´,âŹ,´,ć°´,Đ,Đ&file1=@C:\wamp\www\komek\haha.jpg&file2=&file3=&=Dodaj do albumu&return_uri=/groups/880573151971764?view=group&fc=photo_upload_success&return_uri_error=https://m.facebook.com/photos/upload/?target_id=880573151971764&target=880573151971764&ref=m_upload_pic&album_fbid=&csid=740af77e-8172-4b75-acae-39cd2e49782f&ctype=advanced&referrer=&is_old_composer=&

And I'm posting it with cURL like this.

//example generated $post_params
$post_params = 'fb_dtsg=AQH8uaMrlc1w&charset_test=âŹ,´,âŹ,´,ć°´,Đ,Đ&file1=@C:\wamp\www\komek\haha.jpg&file2=&file3=&=Dodaj do albumu&return_uri=/groups/880573151971764?view=group&fc=photo_upload_success&return_uri_error=https://m.facebook.com/photos/upload/?target_id=880573151971764&target=880573151971764&ref=m_upload_pic&album_fbid=&csid=740af77e-8172-4b75-acae-39cd2e49782f&ctype=advanced&referrer=&is_old_composer=&';
$formAction = 'https://upload.facebook.com/_mupload_/composer/?waterfall_id=d6489f88fb22d5e6f96b3f8a2418020c

$ch = curl_init();
curl_setopt($ch, CURLOPT_COOKIEJAR, 'cookies.txt');
curl_setopt($ch, CURLOPT_COOKIEFILE, 'cookies.txt');
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0');
curl_setopt($ch, CURLOPT_URL, $formAction);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_params);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
$response = curl_exec($ch);

And I get whitepage + following info using CURL_INFO_HEADER_OUT

POST /_mupload_/composer/?waterfall_id=d6489f88fb22d5e6f96b3f8a2418020c 
HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0 
Host: upload.facebook.com 
Accept: */* 
Cookie: mycookies
Content-Length: 410 
Content-Type: application/x-www-form-urlencoded

Content-Length is a way to small (it should contains entire file).

Uploading file takes ~20 seconds with Facebook. Request with cURL takes ~1 second, so it doesn't send my image.

 

I was searching for solution, but everyone tells that to send file with multipart form I need add @ at begining of filepath, but