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rest.php
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<?php
/**
* @author EasyJoomla.org, VikiJel <[email protected]>
* @copyright ©2013-2015 EasyJoomla.org
* @license http://opensource.org/licenses/LGPL-3.0 LGPL-3.0
* @package Joomla
* @version @see easyredmine_api.xml
*/
defined('_JEXEC') or die('Direct access is not allowed!');
jimport('easyredmine_api.rest._interface');
jimport('easyredmine_api.rest._xmlelement');
/**
* Don't use this class directly, always use its child classes!
* Child classes must have $context and $context_one properties overridden (to match rest api naming/routing)
*
* @author VikiJel <[email protected]>
* @package Joomla
* @see EasyRedmineRestApiInterface
*/
class EasyRedmineRestApi implements EasyRedmineRestApiInterface
{
/** @var array $errors */
protected $errors = [];
/** @var string $context */
protected $context = '_default_';
/** @var string $context_one */
protected $context_one = '_default_';
/** @var string $api_key */
protected $api_key = '';
/** @var string $er_url */
protected $er_url = '';
/** @var string $lang */
protected $lang = '';
/** @var string $lang_parameter (set this to empty string and lang parameter will not be passed in request) */
protected $lang_parameter = 'force_lang';
/** @var boolean $write_log */
protected $write_log = true;
/** @var bool */
public $allow_redirects = true;
/** @var boolean $cache_list */
protected $cache_list = true;
/** @var boolean $cache_detail */
protected $cache_detail = true;
/** @var array $cache */
protected static $cache = [];
/** @var int $curl_max_loops */
protected $curl_max_loops = 4;
/** @var int $curl_done_loops */
protected $curl_done_loops = 0;
/** @var int Timeout for the connect phase (in seconds) */
protected $curl_connect_timeout = 30;
/** @var int Maximum time (in seconds) the request is allowed to take */
protected $curl_timeout = 120;
/** @var array Messages for http error codes */
private $http_code_message = [
400 => 'Bad Request',
401 => 'Unauthorized',
402 => 'Payment Required',
403 => 'Forbidden',
404 => 'Not Found',
405 => 'Method Not Allowed',
406 => 'Not Acceptable',
407 => 'Proxy Authentication Required',
408 => 'Request Timeout',
409 => 'Conflict',
410 => 'Gone',
411 => 'Length Required',
412 => 'Precondition Failed',
413 => 'Request Entity Too Large',
414 => 'Request-URI Too Long',
415 => 'Unsupported Media Type',
416 => 'Requested Range Not Satisfiable',
417 => 'Expectation Failed',
418 => 'I\'m a teapot',
420 => 'Enhance Your Calm (Twitter)',
422 => 'Unprocessable Entity',
423 => 'Locked',
424 => 'Failed Dependency',
425 => 'Unordered Collection',
426 => 'Upgrade Required',
428 => 'Precondition Required',
429 => 'Too Many Requests',
431 => 'Request Header Fields Too Large',
444 => 'No Response (Nginx)',
449 => 'Retry With',
450 => 'Blocked by Windows Parental Controls',
499 => 'Client Closed Request (Nginx)',
500 => 'Internal Server Error',
501 => 'Not Implemented',
502 => 'Bad Gateway',
503 => 'Service Temporarily Unavailable - REST API is temporarily unable to service your request probably due to maintenance downtime. Please try again later.',
504 => 'Gateway Timeout',
505 => 'HTTP Version Not Supported',
506 => 'Variant Also Negotiates',
507 => 'Insufficient Storage',
508 => 'Loop detected',
509 => 'Bandwidth Limit Exceeded',
510 => 'Not Extended',
511 => 'Network Authentication Required',
598 => 'Network read timeout error',
599 => 'Network connect timeout error'
];
/**
* @since 1.1.0
*
* @param string $context
* @param string $er_url
* @param string $api_key
* @param bool $write_log
* @param bool $force_new
*
* @return EasyRedmineRestApi descendant
* @throws Exception
*/
public static final function getInstance($context, $er_url, $api_key, $write_log = true, $force_new = false)
{
static $instances;
if (!isset($instances))
{
$instances = [];
}
$context = str_replace('.', '/', $context);
$instance_id = md5($context . ':' . $er_url . ':' . $api_key . ':' . (int) $write_log);
if (!isset($instances[$instance_id]) or $force_new)
{
$a = explode('/', $context);
$path_prefix = $class_prefix = '';
$c = count($a);
if ($c > 1)
{
$c--;
for ($i = 0; $i < $c; $i++)
{
$path_prefix .= $a[$i] . '.';
$class_prefix .= ucfirst($a[$i]);
}
$class_prefix_arr = explode('_', $class_prefix);
$class_prefix_arr = array_map('ucfirst', $class_prefix_arr);
$class_prefix = implode('', $class_prefix_arr);
}
$entity = end($a);
$entity = preg_replace('/[^a-zA-Z0-9]/', '_', $entity);
$arr = explode('_', $entity);
$arr = array_map('strtolower', $arr);
$path = 'easyredmine_api.rest.' . $path_prefix . implode('_', $arr);
$arr = array_map('ucfirst', $arr);
$class = 'EasyRedmineRestApi' . $class_prefix . implode('', $arr);
if (!jimport($path))
{
throw new Exception('Missing library path "' . $path . '"');
}
if (!class_exists($class))
{
throw new Exception('Missing library class "' . $class . '"');
}
$instances[$instance_id] = new $class($er_url, $api_key, $write_log);
}
return $instances[$instance_id];
}
/**
* Initialize API
*
* @param string $er_url
* @param string $api_key
* @param boolean $write_log
*/
public function __construct($er_url, $api_key, $write_log = true)
{
$this->api_key = (string) $api_key;
$this->er_url = (string) $er_url;
$this->write_log = (bool) $write_log;
$this->_initLog();
$this->_checkConfig();
$this->_checkContext();
$this->setLanguage();
}
/**
* Set API language
*
* @param $lang string Joomla language tag (at least first 2 letters)
*
* @since 1.0.6
*
* @return $this
*/
public function setLanguage($lang = null)
{
if ($this->lang_parameter != '')
{
if ($lang === null)
{
$lang = JFactory::getLanguage()->getTag();
}
// cs-CZ => cs
$this->lang = strtolower(substr($lang, 0, 2));
}
return $this;
}
/**
* Set API language request parameter
*
* @param $lang_parameter string Name of request parameter for api language
*
* @since 1.0.6
* @return $this
*/
public function setLanguageParameter($lang_parameter)
{
$this->lang_parameter = $lang_parameter;
return $this;
}
/**
* Get list of records for actual context, supports filtering by url params
*
* @param array $filters URL parameters to filter results
*
* @returns EasyRedmineXmlElement|false
*/
public function getList($filters = [])
{
$filters = (array) $filters;
if ($this->cache_list)
{
$cache_id = get_class($this) . '.' . __FUNCTION__ . '.' . JArrayHelper::toString($filters) . '.' . $this->lang;
if (isset(self::$cache[$cache_id]) and !empty(self::$cache[$cache_id]))
{
return self::$cache[$cache_id];
}
}
if (!empty($filters))
{
$filters['set_filter'] = 1;
}
$response = $this->_sendRequest('/' . $this->context . '.xml', 'get', null, $filters);
if ($response->code != 200)
{
if (isset($response->body->error))
{
$this->setErrors((array) $response->body->error);
}
$this->_writeLog('GetList for context "' . $this->context . '/' . $this->context_one . '" failed: ' . implode($this->getErrors()), JLog::ERROR);
return false;
}
if ($this->cache_list)
{
self::$cache[$cache_id] = $response->body;
}
return $response->body;
}
/**
* Get record detail with given id for actual context
*
* @param int $id ID of Redmine entity
* @param array $params URL parameters for extra features - since 1.0.4
*
* @returns EasyRedmineXmlElement|false
*/
public function get($id, $params = [])
{
$id = (int) $id;
$cache_id = '';
if ($this->cache_detail)
{
$cache_id = get_class($this) . '.' . __FUNCTION__ . '.' . $id . '.' . JArrayHelper::toString($params) . '.' . $this->lang;
if (isset(self::$cache[$cache_id]) and !empty(self::$cache[$cache_id]))
{
return self::$cache[$cache_id];
}
}
if (!$id)
{
$this->setErrors('Missing ID to get');
$this->_writeLog('Get for context ' . $this->context . '/' . $this->context_one . '" failed: ' . $this->getError(), JLog::ERROR);
return false;
}
$response = $this->_sendRequest('/' . $this->context . '/' . $id . '.xml', 'get', null, $params);
if ($response->code != 200)
{
if (isset($response->body->error))
{
$this->setErrors((array) $response->body->error);
}
$this->_writeLog('Get for context "' . $this->context . '/' . $this->context_one . '" failed: ' . implode($this->getErrors()), JLog::ERROR);
return false;
}
if ($this->cache_detail)
{
self::$cache[$cache_id] = $response->body;
}
return $response->body;
}
/**
* Delete record with given id for actual context
*
* @param int $id ID of Redmine entity
* @param object|null $response Reference to rest api response object
*
* @returns boolean
*/
public function delete($id, &$response = null)
{
$id = (int) $id;
$this->errors = [];
if (!$id)
{
$this->setErrors('Missing ID to delete');
$this->_writeLog('Delete for context ' . $this->context . '/' . $this->context_one . '" failed: ' . $this->getError(), JLog::ERROR);
return false;
}
$response = $this->_sendRequest('/' . $this->context . '/' . $id . '.xml', 'delete');
if ($response->code != 200)
{
if (isset($response->body->error))
{
$this->setErrors((array) $response->body->error);
}
$this->_writeLog('Delete for context "' . $this->context . '/' . $this->context_one . '" failed: ' . implode($this->getErrors()), JLog::ERROR);
return false;
}
return true;
}
/**
* @param boolean $cache_detail
*
* @return $this
*/
public function setCacheDetail($cache_detail)
{
$this->cache_detail = $cache_detail;
return $this;
}
/**
* @param boolean $cache_list
*
* @return $this
*/
public function setCacheList($cache_list)
{
$this->cache_list = $cache_list;
return $this;
}
/**
* @param int $curl_connect_timeout
*
* @return $this
*/
public function setCurlConnectTimeout($curl_connect_timeout)
{
$this->curl_connect_timeout = (int) $curl_connect_timeout;
return $this;
}
/**
* @param int $curl_timeout
*
* @return $this
*/
public function setCurlTimeout($curl_timeout)
{
$this->curl_timeout = (int) $curl_timeout;
return $this;
}
/**
* @param object $object Object to store as Redmine entity
*/
protected function _beforeStore(&$object)
{
}
/**
* Insert/Update record for actual context (I/U depends on object id property)
*
* @param object $object Object to store as Redmine entity
* @param object|null $response Reference to rest api response object
*
* @returns boolean
*/
public function store(&$object, &$response = null)
{
$this->errors = [];
if (!$this->validateStore($object))
{
$this->_writeLog('Store() - validation for context "' . $this->context . '/' . $this->context_one . '" failed: ' . implode($this->getErrors()), JLog::ERROR);
return false;
}
$this->_beforeStore($object);
if ($object instanceof SimpleXMLElement)
{
$xml = $object; //for support of sending back entities obtained from api (such as get() + alter + store())
}
else
{
$xml = new EasyRedmineXmlElement('<' . $this->context_one . '/>');
$properties = get_object_vars($object);
foreach ($properties as $property_name => $property_value)
{
switch ($property_name)
{
case 'custom_fields':
if (is_array($property_value) and !empty($property_value))
{
$xml_cf = $xml->addChild('custom_fields');
$xml_cf->addAttribute('type', 'array');
foreach ($property_value as $custom_field)
{
if (isset($custom_field['id']) and (int) $custom_field['id'] and isset($custom_field['value']))
{
if (isset($custom_field['lookup']) and $custom_field['lookup'])
{
$cf = $xml_cf->addChild('custom_field');
$cf->addAttribute('id', (int) $custom_field['id']);
$v = $cf->addChild('value');
$v2 = $v->addChild('selected_value');
$v3 = $v2->addChild((int) $custom_field['value']);
$v3->addChild('id', (int) $custom_field['value']);
$v3->addChild('display_name', $custom_field['display_name']);
}
else
{
$cf = $xml_cf->addChild('custom_field');
$cf->addAttribute('id', (int) $custom_field['id']);
if (is_array($custom_field['value']))
{
$v0 = $cf->addChild('value');
$v0->addAttribute('type', 'array');
foreach ($custom_field['value'] as $cf_val)
{
$v0->addChildCData('value', $cf_val);
}
}
else
{
$cf->addChildCData('value', $custom_field['value']);
}
}
}
}
}
break;
case 'uploads':
if (is_array($property_value) and !empty($property_value))
{
$xml_up = $xml->addChild('uploads');
$xml_up->addAttribute('type', 'array');
foreach ($property_value as $upload)
{
if (isset($upload['filename']) and isset($upload['token']) and isset($upload['content_type']))
{
$up = $xml_up->addChild('upload');
$up->addChild('token', $upload['token']);
$up->addChild('filename', $upload['filename']);
$up->addChild('content_type', $upload['content_type']);
}
}
}
break;
case 'easy_crm_case_items':
if (is_array($property_value) and !empty($property_value))
{
$xml_up = $xml->addChild('easy_crm_case_items_attributes');
$xml_up->addAttribute('type', 'array');
foreach ($property_value as $item)
{
$it = $xml_up->addChild('easy_crm_case_item');
foreach ($item as $item_property_name => $item_property_value)
{
$it->addChildCData($item_property_name, $item_property_value);
}
}
}
break;
default:
if (is_array($property_value))
{
$xml_arr = $xml->addChild($property_name);
$xml_arr->addAttribute('type', 'array');
foreach ($property_value as $pn => $pv)
{
if (is_array($pv))
{
$a_key = array_keys($pv);
$a_val = array_values($pv);
$xml_arr->addChildCData($a_key[0], (string) $a_val[0]);
}
else
{
$xml_arr->addChildCData($pn, (string) $pv);
}
}
}
else
{
$xml->addChildCData($property_name, (string) $property_value);
}
break;
}
}
}
$is_update = (isset($object->id) and (int) $object->id > 0);
if ($is_update)
{
$response = $this->_sendRequest('/' . $this->context . '/' . (int) $object->id . '.xml', 'put', $xml->asXML()); //edit/update
}
else
{
$response = $this->_sendRequest('/' . $this->context . '.xml', 'post', $xml->asXML()); //create
}
if (!$response->code or $response->code >= 400)
{
if (isset($response->body->error))
{
$this->setErrors((array) $response->body->error);
}
$this->_writeLog('Store() - ' . ($is_update ? 'update' : 'insert') . ' for context "' . $this->context . '/' . $this->context_one . '" failed: ' . implode($this->getErrors()), JLog::ERROR);
return false;
}
if (isset($response->body->id) and (int) $response->body->id)
{
$object->id = (int) $response->body->id;
}
return true;
}
/**
* Returns boolean if the object is ok to store
*
* @param object|array $object
*
* @return boolean
*/
protected function validateStore($object)
{
$object = (object) $object;
$valid = true;
$errors = [];
$properties = get_object_vars($object);
if (empty($properties))
{
$valid = false;
$errors[] = 'Empty object is not allowed to store';
}
$this->setErrors($errors);
return $valid;
}
/**
* Uploads file contents
*
* @param $file_contents
*
* @return string|false Token of uploaded file or false on fail
*/
public function upload($file_contents)
{
if (empty($file_contents))
{
$this->setError('Nothing to upload');
return false;
}
$response = $this->_sendRequest('/uploads.xml', 'upload', $file_contents);
if ($response->code != 201 or !isset($response->body->token) or empty($response->body->token))
{
$this->setError('Upload failed');
return false;
}
return (string) $response->body->token;
}
/**
* Wrapper for upload() by file path instead of its contents
*
* @param $file_path
*
* @see upload()
*
* @return string|false Token of uploaded file or false on fail
*/
public function uploadFile($file_path)
{
if (!file_exists($file_path))
{
$this->setError('File not found');
return false;
}
if (($file_contents = file_get_contents($file_path)) === false)
{
$this->setError('File not readable');
return false;
}
return $this->upload($file_contents);
}
/**
* Trims all values of array with recursion for multidimensional
*
* @param array|string $array
*
* @return array|string
*/
public static function trimArray($array)
{
return is_array($array) ? array_map('EasyRedmineRestApi::trimArray', $array) : trim($array);
}
/**
* Sends a http request using CURL
*
* @param string $path
* @param string $method
* @param string $xml
* @param array $params
*
* @return StdClass
*/
protected function _sendRequest($path = '', $method = 'get', $xml = null, $params = [])
{
$params = self::trimArray($params);
$method = strtolower($method);
$c = curl_init();
$uri = JURI::getInstance($this->er_url);
$uri->setPath($path);
if (!empty($params))
{
$uri->setQuery($params);
}
else
{
$uri->setQuery([]);
}
if ($this->lang_parameter != '' and $this->lang != '')
{
$uri->setVar($this->lang_parameter, $this->lang);
}
curl_setopt($c, CURLOPT_URL, $uri->toString());
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($c, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($c, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
curl_setopt($c, CURLOPT_CONNECTTIMEOUT, $this->curl_connect_timeout);
curl_setopt($c, CURLOPT_TIMEOUT, $this->curl_timeout);
$headers = ['X-Redmine-API-Key: ' . $this->api_key];
if (!empty($xml) and $method != 'upload')
{
$headers[] = 'Content-type: text/xml';
}
switch ($method)
{
case 'get':
curl_setopt($c, CURLOPT_HTTPGET, 1);
break;
case 'post':
curl_setopt($c, CURLOPT_POST, 1);
curl_setopt($c, CURLOPT_POSTFIELDS, $xml);
break;
case 'upload':
$headers[] = 'Content-Type: application/octet-stream';
curl_setopt($c, CURLOPT_POST, 1);
curl_setopt($c, CURLOPT_POSTFIELDS, $xml);
break;
case 'put':
curl_setopt($c, CURLOPT_CUSTOMREQUEST, 'PUT');
curl_setopt($c, CURLOPT_POSTFIELDS, $xml);
break;
case 'delete':
curl_setopt($c, CURLOPT_CUSTOMREQUEST, 'DELETE');
curl_setopt($c, CURLOPT_POSTFIELDS, $xml);
break;
}
if (!empty($headers))
{
curl_setopt($c, CURLOPT_HTTPHEADER, $headers);
}
$this->_writeLog('Request: ' . $uri->toString() . ' | ' . $method . ' | ' . $xml);
$response = $this->_curl_exec($c);
$r_code = curl_getinfo($c, CURLINFO_HTTP_CODE);
$con_type = curl_getinfo($c, CURLINFO_CONTENT_TYPE);
$arr = explode(';', $con_type, 2);
$r_type = reset($arr);
$return = new StdClass();
$return->error = curl_error($c);
$return->code = $r_code;
$return->type = $r_type;
if ($return->error != '')
{
$msg = 'Curl error: ' . $return->error;
$this->_writeLog($msg, JLog::ERROR);
$this->setError($msg);
}
curl_close($c);
$this->_writeLog('Response: ' . $r_code . ' | ' . $r_type . ' | ' . $response);
if ($return->code >= 400)
{
$this->setError('Error' . (isset($this->http_code_message[$return->code]) ? ': ' . $this->http_code_message[$return->code] : ' - response code: ' . $return->code));
}
if (trim($response) != '' and strpos($r_type, '/xml') !== false)
{
if (function_exists('mb_stripos'))
{
$xml_start = mb_stripos($response, '<?xml');
}
else
{
$xml_start = stripos($response, '<?xml');
}
if ($xml_start > 0)
{
if (function_exists('mb_substr'))
{
$response = mb_substr($response, $xml_start);
}
else
{
$response = substr($response, $xml_start);
}
$this->_writeLog('Cutting off beginning of response, xml start = ' . $xml_start, JLog::NOTICE);
}
if (($body = @simplexml_load_string($response, 'EasyRedmineXmlElement')) !== false)
{
$return->body = $body;
}
else
{
$this->_writeLog('Cannot parse response body using simplexml_load_string()', JLog::WARNING);
$return->body = $response;
}
}
else
{
if (trim($response) != '')
{
$this->_writeLog('Response is not */xml content-type', JLog::WARNING);
}
elseif ($return->code != 204)
{
$this->_writeLog('Response is empty', JLog::WARNING);
}
$return->body = $response;
}
return $return;
}
/**
* @see curl_exec()
*
* @param $ch
*
* @return mixed|string
*/
protected function _curl_exec($ch)
{
$this->curl_done_loops = 0;
if (ini_get('open_basedir') == '' && strtolower(ini_get('safe_mode')) == 'off')
{
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_MAXREDIRS, $this->curl_max_loops);
return curl_exec($ch);
}
else
{
if ($this->curl_done_loops++ >= $this->curl_max_loops)
{
$this->curl_done_loops = 0;
$this->_writeLog('Maximum number of redirects exceeded in ' . get_class($this) . '::_curl_exec()');
return false;
}
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec($ch);
$res_arr = explode("\r\n\r\n", $data, 2);
if (isset($res_arr[1]))
{
$header = $res_arr[0];
$data = $res_arr[1];
}
else
{
$header = $res_arr[0];
$data = '';
}
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ($this->allow_redirects and ($http_code == 301 || $http_code == 302))
{
$matches = [];
preg_match('/Location: (.*)/', $header, $matches);
$url = @parse_url(trim(array_pop($matches)));
if (!$url)
{
$this->curl_done_loops = 0;
return $data;
}
$effective_url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
$last_url = parse_url($effective_url);
if (!isset($url['scheme']))
{
$url['scheme'] = $last_url['scheme'];
}
if (!isset($url['host']))
{
$url['host'] = $last_url['host'];
}
if (!isset($url['path']))
{
$url['path'] = $last_url['path'];
}
$new_url = $url['scheme'] . '://' . $url['host'] . $url['path'] . (isset($url['query']) ? '?' . $url['query'] : '');
$this->_writeLog('CURL Redirect:' . $effective_url . ' => ' . $new_url);
curl_setopt($ch, CURLOPT_URL, $new_url);
return $this->_curl_exec($ch);
}
else
{
$this->curl_done_loops = 0;
return $data;
}
}
}
/**
* Throws an exception with given message after writing it to logfile
*
* @param string $message
*
* @throws Exception
* @return boolean
*/
protected function _throwException($message)
{
$this->_writeLog($message, JLog::ERROR);
throw new Exception($message);
}
/**
* Write log entry
*
* @param string $message
* @param int $priority
* @param string $category
*
* @return boolean
*/
protected function _writeLog($message, $priority = JLog::INFO, $category = 'lib_easyredmine_api')
{