Ameba blog X-WSSE

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<?php
date_default_timezone_set('Asia/Tokyo');
require_once('Zend/Http/Client.php');

define('AMEBA_URL', 'http://atomblog.ameba.jp/servlet/_atom/blog');

request('USERNAME', 'PASSWORD');

function request($user_name, $password) {
    $client = new Zend_Http_Client();
    $client->setUri(AMEBA_URL);
    $client->setHeaders('X-WSSE', createWsse($user_name, $password));
    $resp = $client->request(Zend_Http_Client::GET);
    if(!$resp->isSuccessful()) {
        echo "Failed...\n";
        echo "<request> -----\n";
        echo $client->getLastRequest() . "\n";
        echo "<response> ----\n";
        echo $resp->asString("\n") . "\n";
        echo "---------------\n";
        return false;
    }
    echo "OK!\n";
    echo "<response> ----\n";
    echo $resp->asString("\n") . "\n";
    echo "---------------\n";
    return true;
}

function createWsse($user_name, $password) {
    $nonce = bin2hex(file_get_contents('/dev/urandom', false, null, 0, 20));
    $created = gmdate('Y-m-d\TH:i:s\Z', time());
    $digest = hash('sha1', $nonce . $created . hash('md5', $password), true);
    $wsse =
        sprintf(
            'UsernameToken Username="%s", PasswordDigest="%s", Nonce="%s", Created="%s"',
            $user_name,
            base64_encode($digest),
            base64_encode($nonce),
            $created);
    return $wsse;
}