Hi Arne,
I m using the sample php code at
http://code.google.com/p/opensocial-resources/wiki/OrkutValidatingSignedRequests
but every time I make a signed request from the application the
authentication fails.
I am using the Poor Man's PHP Key Cache. posted above by Johannes
my code is as below...
<?php
error_reporting(E_ALL ^ E_NOTICE);
require_once("OAuth.php");
require("cert_file_accessor.php");
//Determine the URL of the request
$url = ( $_SERVER['HTTPS'] ? "https://"; : "http://"; ) .
$_SERVER['HTTP_HOST'] .
($_SERVER['HTTP_PORT'] ? (":" . $_SERVER['HTTP_PORT']) :
"") .
$_SERVER['PHP_SELF'];
//Orkut's public key certificate
$cert_accessor = new CertFileAccessor('/certs', 'orkut');
$cert = $cert_accessor-
>getPublicKey($_REQUEST['xoauth_signature_publickey']);
//Compute the raw form of the signed request using the OAuth
library.
$req = new OAuthRequest($_SERVER["REQUEST_METHOD"], $url,
array_merge($_GET, $_POST));
$sig = array(
OAuthUtil::urlencodeRFC3986($req->get_normalized_http_method()),
OAuthUtil::urlencodeRFC3986($req->get_normalized_http_url()),
OAuthUtil::urlencodeRFC3986($req->get_signable_parameters()),
);
$raw = implode("&", $sig);
//Get the signature passed in the query and urldecode it
$signature = base64_decode($_GET["oauth_signature"]);
//Pull the public key ID from the certificate
$publickeyid = openssl_get_publickey($cert);
//Check the computer signature against the one passed in the query
$ok = openssl_verify($raw, $signature, $publickeyid);
//Release the key resource
openssl_free_key($publickeyid);
//Pass JSON data back
$payload = array();
if ($ok == 1) {
$payload["validated"] = "Success! The data was validated";
} else {
$payload["validated"] = "This request was spoofed";
}
//Include some extra information for debugging
$payload["raw"] = $raw;
$payload["query"] = $_GET;
$payload["url"] = $url;
$payload["getandpost"] = array_merge($_GET, $_POST);
$payload["rawpost"] = file_get_contents('php://input');
print($payload["validated"]);
?>
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