PHP Cydia API wrapper

cydia.php

<?php
/*
The MIT License (MIT)

Copyright (c) <2014> <@wolfposd>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/


/*
How to use:

$c = new CydiaCheck("device-udid", "com.github.package", "vendor", "aabbccddeeffgg");
$c->requestPurchaseStatus();

if($c->isPaid()) {
  echo "Is paid";
}
else{
  echo "Is not paid";
}

*/

class CydiaCheck
{
    private $vendor;
    private $udid;
    private $package;
    private $apikey;
    public $paymentstatus;
    
    /**
     * Create a new CydiaApiCheck
     * @param string $udid the UDID of the device
     * @param string $package the package id to check, eg: com.website.package
     * @param string $vendor the vendor id of your package
     * @param string $apikey the secret cydia-api-key
     */
    function __construct($udid, $package, $vendor, $apikey)
    {
        $this->vendor = $vendor;
        $this->udid = $udid;
        $this->apikey = $apikey;
        $this->package = $package;
        $this->paymentstatus = array();
    }

    /**
     * prepares the query-string for a curl-request
     * @return string cydia-api-query
     */
    function constructAPIRequest()
    {
        $tempQuery = 'api=store-0.9&device='.$this->udid.
        '&mode=local&nonce='.time().
        '&package='.$this->package.
        '&timestamp='.time().
        "&vendor=".$this->vendor;
         
        return "http://cydia.saurik.com/api/check?".$tempQuery."&signature=".hash_SHA1($tempQuery, $this->apikey);
    }
    
    /**
     * Request the purchase status from the cydia-server
     * @return associative array with purchase details
     */
    function requestPurchaseStatus()
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_URL, $this->constructAPIRequest());
        $result = curl_exec($ch);
        curl_close($ch);
        
        $this->paymentstatus = $this->convertPurchaseStatus($result);
        return $result;
    }
    
    function convertPurchaseStatus($stringstatus)
    {
        $output = array();
        parse_str($stringstatus, $output);
        return $output;
    }
    
    
    function isPaid()
    {
        return $this->paymentstatus["state"] == "completed";
    }
    
}

/**
 * create an HMAC from message in BASE64
 * @param string $message the message to verify
 * @param string $key the key to use
 * @param boolean $rawdata , if false returns hex-chars
 * @return string BASE64(HMAC(message))
 */
function hash_SHA1($message, $key, $rawdata = true)
{
    $hashed = base64_encode(hash_hmac('SHA1', $message, $key, $rawdata));
    $hashed = str_replace("/", "_", $hashed);
    $hashed = str_replace("=", "", $hashed);
    $hashed = str_replace("+", "-", $hashed);
    return $hashed;
}



?>