ExactOnlineApi - API.php

<?php
/**
 *
 * This file contains a class which can be used to connect with the Exact Online API
 */

namespace ExactOnlineApi;

use \ExactOnlineApi\ApiException;

class API
{

    /**
     * @var string
     */
    private $baseurl;

    /**
     * @var string
     */
    private $username;

    /**
     * @var string
     */
    private $password;

    /**
     * @var string
     */
    private $applicationKey;

    /**
     * @var string
     */
    private $division;

    /**
     * @var string
     */
    private $cookiefile;

    /**
     * @var string
     */
    private $crtBundleFile;

    /**
     * @var string
     */
    private $endpoint;

    /**
     * @var string
     */
    private $xml;

    /**
     * @var array
     */
    private $endpointParameters = array();

    /**
     * @var resource
     */
    private $curl;

    /**
     * @var string
     */
    private $curlData;

    /**
     * @var string
     */
    private $url;

    /**
     * Constructs the Exact Online API class
     * If all parameters are given, the constructor initializes a Curl instance
     * It's possible to do this manual to provide all parameters with the set methods and then call $this->init()
     *
     * @param string $baseUrl
     * @param string $username
     * @param string $password
     * @param string $applicationKey
     * @param string $division
     * @param string $cookieFile
     * @param string $crtBundleFile
     */
    function __construct(
        $baseUrl = "https://start.exactonline.nl",
        $username = "",
        $password = "",
        $applicationKey = "",
        $division = "",
        $cookieFile = "",
        $crtBundleFile = ""
    )
    {
        // Set all properties if not empty
        if (!empty($baseUrl)) {
            $this->setBaseurl($baseUrl);
        }
        if (!empty($username)) {
            $this->setUsername($username);
        }
        if (!empty($password)) {
            $this->setPassword($password);
        }
        if (!empty($applicationKey)) {
            $this->setApplicationKey($applicationKey);
        }
        if (!empty($division)) {
            $this->setDivision($division);
        }
        if (!empty($cookieFile)) {
            $this->setCookiefile($cookieFile);
        }
        if (!empty($crtBundleFile)) {
            $this->setCrtBundleFile($crtBundleFile);
        }
        // Check if all properties exists
        // If all properties exist, initialize Curl and set the division
        if (
            !empty($baseUrl) &&
            !empty($username) &&
            !empty($password) &&
            !empty($applicationKey) &&
            !empty($division) &&
            !empty($cookieFile) &&
            !empty($crtBundleFile)
        ) {
            $this->init();
        }
    }

    function __destruct()
    {
        if ($this->isInit()) {
            $ch = $this->getCurl();
            curl_close($ch);
        }
    }

    /**
     * Initialize the Exact Online API
     * This method initializes a CURL instance and saves it in the private $curl variable.
     * Other methods can retrieve this CURL instance by calling $this->getCurl().
     * This method should called only once
     *
     * @throws \ApiException
     */
    public function init()
    {
        // Check if the curl object isn't set already
        if ($this->isInit()) {
            throw new \ExactOnlineApi\ApiException("A Curl instance is already initialized");
        }
        // Check if all needed properties are set
        if ($this->getCookiefile() == null || $this->getCrtBundleFile() == null || $this->getUsername() == null || $this->getPassword() == null) {
            throw new \ExactOnlineApi\ApiException("Not all properties are set: cookieFile, crtBundleFile, username or password");
        }

        // Define headers
        $header[1] = "Cache-Control: private";
        $header[2] = "Connection: Keep-Alive";
        // Initialize Curl
        $ch = curl_init();
        // Use POST instead of GET
        curl_setopt($ch, CURLOPT_POST, 1);
        // Set the HTTP header
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        // Expect returndata
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        // Set cookiefile for sessiondata
        curl_setopt($ch, CURLOPT_COOKIEJAR, $this->getCookiefile());
        // Set crtBundleFile (certificate)
        curl_setopt($ch, CURLOPT_CAINFO, $this->getCrtBundleFile());
        // Define  _UserName_ and _Password_ post fields
        curl_setopt($ch, CURLOPT_POSTFIELDS, array (
            "_UserName_" => $this->getUsername(),
            "_Password_" => $this->getPassword()
        ));

        // Save Curl object in the class so it can be used by other methods
        $this->setCurl($ch);
    }

    /**
     * Call the Exact Online API with an endpoint
     */
    public function callEndpoint($sendApplicationKey = true)
    {
        $ch = $this->prepareCall($sendApplicationKey);
        // Execute
        $data = curl_exec($ch);
        $this->finishCall($ch, $data);
    }

    /**
     * Call the Exact Online API with an endpoint and upload XML data
     */
    public function callUploadEndpoint($sendApplicationKey = true)
    {
        $ch = $this->prepareCall($sendApplicationKey);
        // set XML in the postfields
        curl_setopt($ch, CURLOPT_POSTFIELDS, utf8_encode($this->getXml()));
        // Execute
        $data = curl_exec($ch);
        $this->finishCall($ch, $data);
    }

    public function getCurlDataAsObject()
    {
        return new \SimpleXMLElement($this->getCurlData());
    }

    /**
     * Finishes the call and set the data or throws an exception if the request was not OK
     *
     * @param $ch
     * @param $data
     * @throws ApiException
     */
    private function finishCall($ch, $data)
    {
        // Reset endpoint parameters
        $this->setEndpointParameters(array());
        // Get HTTP status code from Curl
        $httpStatus = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        // Check if the HTTP code is 200, else throw exception
        if ($httpStatus == 200) {
            // If HTTP code is 200, set the data in $this->curlData;
            $this->setCurlData($data);
        } else {
            throw new \ExactOnlineApi\ApiException(
                "HTTP status is not OK!<br />Url: " .
                $this->getUrl() .
                "<br />Status: " . $httpStatus,
                $data,
                $httpStatus
            );
        }
    }

    /**
     * Prepares the call and sets the endpoint URL
     *
     * @return resource
     */
    private function prepareCall($sendApplicationKey)
    {
        // Check if the curl object is set
        if (!$this->isInit()) {
            // If it isn't, we do it right now
            $this->init();
        }
        // Get Curl object
        $ch = $this->getCurl();

        $parameters = $this->getEndpointParameters();
        if ($sendApplicationKey) {
            $parameters = array("ApplicationKey" => $this->getApplicationKey()) + $parameters;
        }
        $url = vsprintf('%s/docs/%s?%s', array (
            $this->getBaseurl(),
            $this->getEndpoint(),
            http_build_query($parameters)
        ));

        $this->setUrl($url);
        // Set full URL in Curl
        curl_setopt($ch, CURLOPT_URL, $url);
        return $ch;
    }

    /**
     * Returns if Curl is initialized or not
     *
     * @return bool
     */
    private function isInit()
    {
        if ($this->getCurl() != null) {
            return true;
        }
        return false;
    }

    /**
     * Remove BOM from returned data
     *
     * @param string $xml
     * @return string
     */
    private function removeBOM($xml)
    {
        return preg_replace('/\x{EF}\x{BB}\x{BF}/', '', $xml);
    }

    // GETTERS AND SETTERS

    /**
     * @param string $applicationKey
     */
    public function setApplicationKey($applicationKey)
    {
        $this->applicationKey = $applicationKey;
    }

    /**
     * @return string
     */
    public function getApplicationKey()
    {
        return $this->applicationKey;
    }

    /**
     * @param string $baseurl
     */
    public function setBaseurl($baseurl)
    {
        $this->baseurl = $baseurl;
    }

    /**
     * @return string
     */
    public function getBaseurl()
    {
        return $this->baseurl;
    }

    /**
     * @param string $cookiefile
     */
    public function setCookiefile($cookiefile)
    {
        $this->cookiefile = $cookiefile;
    }

    /**
     * @return string
     */
    public function getCookiefile()
    {
        return $this->cookiefile;
    }

    /**
     * @param string $crtBundleFile
     */
    public function setCrtBundleFile($crtBundleFile)
    {
        $this->crtBundleFile = $crtBundleFile;
    }

    /**
     * @return string
     */
    public function getCrtBundleFile()
    {
        return $this->crtBundleFile;
    }

    /**
     * @param string $division
     */
    public function setDivision($division)
    {
        $this->division = $division;
    }

    /**
     * @return string
     */
    public function getDivision()
    {
        return $this->division;
    }

    /**
     * @param string $password
     */
    public function setPassword($password)
    {
        $this->password = $password;
    }

    /**
     * @return string
     */
    public function getPassword()
    {
        return $this->password;
    }

    /**
     * @param string $username
     */
    public function setUsername($username)
    {
        $this->username = $username;
    }

    /**
     * @return string
     */
    public function getUsername()
    {
        return $this->username;
    }

    /**
     * @param resource $curl
     */
    public function setCurl($curl)
    {
        $this->curl = $curl;
    }

    /**
     * @return resource
     */
    public function getCurl()
    {
        return $this->curl;
    }

    /**
     * @param string $curlData
     */
    public function setCurlData($curlData)
    {
        $this->curlData = $this->removeBOM($curlData);
    }

    /**
     * @return string
     */
    public function getCurlData()
    {
        return $this->curlData;
    }

    /**
     * @param string $endpoint
     */
    public function setEndpoint($endpoint)
    {
        $this->endpoint = $endpoint;
    }

    /**
     * @return string
     */
    public function getEndpoint()
    {
        return $this->endpoint;
    }

    /**
     * @param string $xml
     */
    public function setXml($xml)
    {
        $this->xml = $xml;
    }

    /**
     * @return string
     */
    public function getXml()
    {
        return $this->xml;
    }

    /**
     * @param array $endpointParameters
     */
    public function setEndpointParameters($endpointParameters)
    {
        $this->endpointParameters = $endpointParameters;
    }

    /**
     * @return array
     */
    public function getEndpointParameters()
    {
        return $this->endpointParameters;
    }

    /**
     * @param string $url
     */
    public function setUrl($url)
    {
        $this->url = $url;
    }

    /**
     * @return string
     */
    public function getUrl()
    {
        return $this->url;
    }
}

ExactOnlineApi - ApiException.php

<?php
/**
 *
 * This file contains a custom exception for ExactOnlineAPI
 */

namespace ExactOnlineApi;

class ApiException extends \Exception
{
    /**
     * @var string
     */
    protected $apiData;

    function __construct($message = "", $apiData = "", $code = 0, Exception $previous = null)
    {
        $this->apiData = $apiData;

        parent::__construct($message, $code, $previous);
    }

    /**
     * @return string
     */
    public function getApiData()
    {
        return $this->apiData;
    }
}

ExactOnlineApi - Example.php

<?php

namespace ExactOnlineApi;

try {
    // Init ExactOnlineApi class and provide all properties
    // The constructor will init a Curl instance and set the divison
    $exactOnlineApi = new \ExactOnlineApi\API(
        $baseurl,
        $username,
        $password,
        $applicationkey,
        $division,
        $cookiefile,
        $crtbundlefile
    );

    // First set the division
    $exactOnlineApi->setEndpoint("ClearSession.aspx");
    $exactOnlineApi->setEndpointParameters(array(
        "Division" => $division,
        "Remember" => 3
    ));
    $exactOnlineApi->callEndpoint(false);

    // Retrieve item
    $exactOnlineApi->setEndpoint("XMLDownload.aspx");
    $exactOnlineApi->setEndpointParameters(array(
        "Topic" => "Items",
        "Params_AssortmentCode" => "01"
    ));
    $exactOnlineApi->callEndpoint();

    $xmlObject = $exactOnlineApi->getCurlDataAsObject();
} catch (\ExactOnlineApi\ApiException $e) {
    echo "<h3>ApiException occurred</h3>";
    echo "<div class=\"message\">" . $e->getMessage() . "</div>";
    echo "<pre class='prettyprint lang-xml linenums'>".htmlentities($e->getApiData())."</pre>";
    die;
}