<?php
/*
Created by Umar Salim - umarsalim.com / blog.umarsalim.com

How to use can be found at my blog - blog.umarsalim.com

*/

function hmacsha1($key,$data) { 
    $blocksize=64; 
    $hashfunc='sha1'; 
    if (strlen($key)>$blocksize) 
        $key=pack('H*', $hashfunc($key)); 
    $key=str_pad($key,$blocksize,chr(0x00)); 
    $ipad=str_repeat(chr(0x36),$blocksize); 
    $opad=str_repeat(chr(0x5c),$blocksize); 
    $hmac = pack( 
                'H*',$hashfunc( 
                    ($key^$opad).pack( 
                        'H*',$hashfunc( 
                            ($key^$ipad).$data 
                        ) 
                    ) 
                ) 
            ); 
    return $hmac; 
} 

function oauth_hmacsha1($key, $data) { 
    return base64_encode(hmacsha1($key, $data)); 
} 

function upload_GS($sourcefile, $targetfile, $secret_key, $authkey) {
$fp = fopen ($sourcefile, "r"); 
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_VERBOSE, 1); 
curl_setopt($ch, CURLOPT_URL, "http://storage.directlinkhosting.cz.cc$targetfile"); 
curl_setopt($ch, CURLOPT_PUT, 1); 
curl_setopt($ch, CURLOPT_HEADER, 1); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_INFILE, $fp); 
curl_setopt($ch, CURLOPT_INFILESIZE, filesize($sourcefile)); 

$signature = ''; 
$msgsigned = ''; 
$date = gmdate(DATE_RFC1123); 
$msgsigned = "PUT\n\n\n$date\nx-goog-acl:public-read\n/storage.directlinkhosting.cz.cc$targetfile"; 
$signature = oauth_hmacsha1($secret_key,$msgsigned); 
$headers = array( 
                "PUT $targetfile HTTP/1.1",
                "Host: storage.directlinkhosting.cz.cc", 
                "Date: ".$date, 
                "Content-Length: " . filesize($localfile),
				"x-goog-acl: public-read",
                "Authorization: GOOG1 $authkey:".$signature
);

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$http_result = curl_exec($ch); 
$error = curl_error($ch); 
$http_code = curl_getinfo($ch ,CURLINFO_HTTP_CODE); 
curl_close($ch); 
fclose($fp); 

	if ($http_code == "200") { 
		return true; 
	} else {
		return false;
	} 
}
?>