I am facing some problem in generating oauth_signature for flickr api. Can you please look into this and advise me what I am doing wrong? // p.s. I am sharing my Flickr key and secret as I will change them when I will start production development.
/* PHP code */
$NONCE=base64_decode(rand());
$TIMESTAMP= gmdate('U');
$SECRET="39b4f5fd592ede81";
$KEY="1bab082052d7cf8b3aa9e2bc92882ac0";
$CONSUMER_SECRET= $SECRET. "&";
$url_1 = "http://www.flickr.com/services/oauth/request_token?";
$url_1 = urlencode($url_1);
$url_2 = "oauth_callback=http%3A%2F%2Flocalhost%2FFlickr%2Flogin.php&oauth_consumer_key=". $KEY;
$url_2 .="&oauth_nonce=". $NONCE. "&oauth_signature_method=HMAC-SHA1&oauth_timestamp=". $TIMESTAMP. "&oauth_version=1.0";
// generate signature
$BASE_STRING ="";
$BASE_STRING .= "GET&". urlencode($url_1). urlencode($url_2);
$API_SIG= base64_encode(hash_hmac("sha1",$BASE_STRING,$CONSUMER_SECRET, true) );
// url generate
$url="http://www.flickr.com/services/oauth/request_token?oauth_callback=http://localhost/Flickr/login.php&oauth_consumer_key=". $KEY;
$url.="&oauth_nonce=". $NONCE. "&oauth_timestamp=". $TIMESTAMP. "&oauth_signature_method=HMAC-SHA1&oauth_version=1.0&oauth_signature=". $API_SIG;
// calling
$ch=curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_REFERER, "http://www.example.org/yay.htm");
curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla Firefox/3.0");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data= curl_exec($ch);
echo $data;
curl_close($ch);
I am answering my own question. Thanks to Sam Judson: http://www.wackylabs.net
I removed base64_decode() from generating random numbers and it just did worked.