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<?php
/**
* modProcessor
*
* @package modx
*/
/**
* Abstracts a MODX processor, handling its response and error formatting.
*
* {@inheritdoc}
*
* @package modx
*/
abstract class modProcessor {
/**
* A reference to the modX object.
* @var modX $modx
*/
public $modx = null;
/**
* The absolute path to this processor
* @var string $path
*/
public $path = '';
/**
* The array of properties being passed to this processor
* @var array $properties
*/
public $properties = array();
/**
* Creates a modProcessor object.
*
* @param modX $modx A reference to the modX instance
* @param array $properties An array of properties
*/
function __construct(modX & $modx,array $properties = array()) {
$this->modx =& $modx;
$this->setProperties($properties);
}
/**
* Set the path of the processor
* @param string $path The absolute path
* @return void
*/
public function setPath($path) {
$this->path = $path;
}
/**
* Set the runtime properties for the processor
* @param array $properties The properties, in array and key-value form, to run on this processor
* @return void
*/
public function setProperties($properties) {
unset($properties['HTTP_MODAUTH']);
$this->properties = array_merge($this->properties,$properties);
}
/**
* Completely unset a property from the properties array
* @param string $key
* @return void
*/
public function unsetProperty($key) {
unset($this->properties[$key]);
}
/**
* Return true here to allow access to this processor.
*
* @return boolean
*/
public function checkPermissions() { return true; }
/**
* Can be used to provide custom methods prior to processing. Return true to tell MODX that the Processor
* initialized successfully. If you return anything else, MODX will output that return value as an error message.
*
* @return boolean
*/
public function initialize() { return true; }
/**
* Load a collection of Language Topics for this processor.
* Override this in your derivative class to provide the array of topics to load.
* @return array
*/
public function getLanguageTopics() {
return array();
}
/**
* Return a success message from the processor.
* @param string $msg
* @param mixed $object
* @return array|string
*/
public function success($msg = '',$object = null) {
return $this->modx->error->success($msg,$object);
}
/**
* Return a failure message from the processor.
* @param string $msg
* @param mixed $object
* @return array|string
*/
public function failure($msg = '',$object = null) {
return $this->modx->error->failure($msg,$object);
}
/**
* Return whether or not the processor has errors
* @return boolean
*/
public function hasErrors() {
return $this->modx->error->hasError();
}
/**
* Add an error to the field
* @param string $key
* @param string $message
* @return mixed
*/
public function addFieldError($key,$message = '') {
return $this->modx->error->addField($key,$message);
}
/**
* Return the proper instance of the derived class. This can be used to override how MODX loads a processor
* class; for example, when handling derivative classes with class_key settings.
*
* @static
* @param modX $modx A reference to the modX object.
* @param string $className The name of the class that is being requested.
* @param array $properties An array of properties being run with the processor
* @return The class specified by $className
*/
public static function getInstance(modX &$modx,$className,$properties = array()) {
/** @var modProcessor $processor */
$processor = new $className($modx,$properties);
return $processor;
}
/**
* Run the processor and return the result. Override this in your derivative class to provide custom functionality.
* Used here for pre-2.2-style processors.
*
* @return mixed
*/
abstract public function process();
/**
* Run the processor, returning a modProcessorResponse object.
* @return modProcessorResponse
*/
public function run() {
if (!$this->checkPermissions()) {
$o = $this->failure($this->modx->lexicon('permission_denied'));
} else {
$topics = $this->getLanguageTopics();
foreach ($topics as $topic) {
$this->modx->lexicon->load($topic);
}
$initialized = $this->initialize();
if ($initialized !== true) {
$o = $this->failure($initialized);
} else {
$o = $this->process();
}
}
$response = new modProcessorResponse($this->modx,$o);
return $response;
}
/**
* Get a specific property.
* @param string $k
* @param mixed $default
* @return mixed
*/
public function getProperty($k,$default = null) {
return array_key_exists($k,$this->properties) ? $this->properties[$k] : $default;
}
/**
* Set a property value
*
* @param string $k
* @param mixed $v
* @return void
*/
public function setProperty($k,$v) {
$this->properties[$k] = $v;
}
/**
* Special helper method for handling checkboxes. Only set value if passed or $force is true, and check for a
* not empty value or string 'false'.
*
* @param string $k
* @param boolean $force
* @return int|null
*/
public function setCheckbox($k,$force = false) {
$v = null;
if ($force || isset($this->properties[$k])) {
$v = empty($this->properties[$k]) || $this->properties[$k] === 'false' ? 0 : 1;
$this->setProperty($k,$v);
}
return $v;
}
/**
* Get an array of properties for this processor
* @return array
*/
public function getProperties() {
return $this->properties;
}
/**
* Sets default properties that only are set if they don't already exist in the request
*
* @param array $properties
* @return array The newly merged properties array
*/
public function setDefaultProperties(array $properties = array()) {
$this->properties = array_merge($properties,$this->properties);
return $this->properties;
}
/**
* Return arrays of objects (with count) converted to JSON.
*
* The JSON result includes two main elements, total and results. This format is used for list
* results.
*
* @access public
* @param array $array An array of data objects.
* @param mixed $count The total number of objects. Used for pagination.
* @return string The JSON output.
*/
public function outputArray(array $array,$count = false) {
if ($count === false) { $count = count($array); }
return '{"total":"'.$count.'","results":'.$this->modx->toJSON($array).'}';
}
/**
* Converts PHP to JSON with JavaScript literals left in-tact.
*
* JSON does not allow JavaScript literals, but this function encodes certain identifiable
* literals and decodes them back into literals after modX::toJSON() formats the data.
*
* @access public
* @param mixed $data The PHP data to be converted.
* @return string The extended JSON-encoded string.
*/
public function toJSON($data) {
if (is_array($data)) {
array_walk_recursive($data, array(&$this, '_encodeLiterals'));
}
return $this->_decodeLiterals($this->modx->toJSON($data));
}
/**
* Encodes certain JavaScript literal strings for later decoding.
*
* @access protected
* @param mixed &$value A reference to the value to be encoded if it is identified as a literal.
* @param integer|string $key The array key corresponding to the value.
*/
protected function _encodeLiterals(&$value, $key) {
if (is_string($value)) {
/* properly handle common literal structures */
if (strpos($value, 'function(') === 0
|| strpos($value, 'new Function(') === 0
|| strpos($value, 'Ext.') === 0) {
$value = '@@' . base64_encode($value) . '@@';
}
}
}
/**
* Decodes strings encoded by _encodeLiterals to restore JavaScript literals.
*
* @access protected
* @param string $string The JSON-encoded string with encoded literals.
* @return string The JSON-encoded string with literals restored.
*/
protected function _decodeLiterals($string) {
$pattern = '/"@@(.*?)@@"/';
$string = preg_replace_callback(
$pattern,
create_function('$matches', 'return base64_decode($matches[1]);'),
$string
);
return $string;
}
/**
* Processes a response from a Plugin Event invocation
*
* @param array|string $response The response generated by the invokeEvent call
* @param string $separator The separator for each event response
* @return string The processed response.
*/
public function processEventResponse($response,$separator = "\n") {
if (is_array($response)) {
$result = false;
foreach ($response as $msg) {
if (!empty($msg)) {
$result[] = $msg;
}
}
$result = implode($separator,$result);
} else {
$result = $response;
}
return $result;
}
}
/**
* A utility class for pre-2.2-style, or flat file, processors.
*
* @package modx
*/
class modDeprecatedProcessor extends modProcessor {
/**
* Rather than load a class for processing, include the processor file directly.
*
* {@inheritDoc}
* @return mixed
*/
public function process() {
$modx =& $this->modx;
$scriptProperties = $this->getProperties();
$o = include $this->path;
return $o;
}
}
/**
* A utility class used for defining driver-specific processors
*
* @package modx
*/
abstract class modDriverSpecificProcessor extends modProcessor {
public static function getInstance(modX &$modx,$className,$properties = array()) {
$className .= '_'.$modx->getOption('dbtype');
/** @var modProcessor $processor */
$processor = new $className($modx,$properties);
return $processor;
}
}
/**
* Base class for object-specific processors
* @abstract
*/
abstract class modObjectProcessor extends modProcessor {
/** @var xPDOObject|modAccessibleObject $object The object being grabbed */
public $object;
/** @var string $objectType The object "type", this will be used in various lexicon error strings */
public $objectType = 'object';
/** @var string $classKey The class key of the Object to iterate */
public $classKey;
/** @var string $primaryKeyField The primary key field to grab the object by */
public $primaryKeyField = 'id';
/** @var string $permission The Permission to use when checking against */
public $permission = '';
/** @var array $languageTopics An array of language topics to load */
public $languageTopics = array();
public function checkPermissions() {
return !empty($this->permission) ? $this->modx->hasPermission($this->permission) : true;
}
public function getLanguageTopics() {
return $this->languageTopics;
}
}
/**
* A utility abstract class for defining get-based processors
* @abstract
*/
abstract class modObjectGetProcessor extends modObjectProcessor {
/** @var boolean $checkViewPermission If set to true, will check the view permission on modAccessibleObjects */
public $checkViewPermission = true;
/**
* {@inheritDoc}
* @return boolean
*/
public function initialize() {
$primaryKey = $this->getProperty($this->primaryKeyField,false);
if (empty($primaryKey)) return $this->modx->lexicon($this->objectType.'_err_ns');
$this->object = $this->modx->getObject($this->classKey,$primaryKey);
if (empty($this->object)) return $this->modx->lexicon($this->objectType.'_err_nfs',array($this->primaryKeyField => $primaryKey));
if ($this->checkViewPermission && $this->object instanceof modAccessibleObject && !$this->object->checkPolicy('view')) {
return $this->modx->lexicon('access_denied');
}
return true;
}
/**
* {@inheritDoc}
* @return mixed
*/
public function process() {
$this->beforeOutput();
return $this->cleanup();
}
/**
* Return the response
* @return array
*/
public function cleanup() {
return $this->success('',$this->object->toArray());
}
/**
* Used for adding custom data in derivative types
* @return void
*/
public function beforeOutput() { }
}
/**
* A utility abstract class for defining getlist-based processors
* @abstract
*/
abstract class modObjectGetListProcessor extends modObjectProcessor {
/** @var string $defaultSortField The default field to sort by */
public $defaultSortField = 'name';
/** @var string $defaultSortDirection The default direction to sort */
public $defaultSortDirection = 'ASC';
/** @var boolean $checkListPermission If true and object is a modAccessibleObject, will check list permission */
public $checkListPermission = true;
/** @var int $currentIndex The current index of successful iteration */
public $currentIndex = 0;
/**
* {@inheritDoc}
* @return boolean
*/
public function initialize() {
$this->setDefaultProperties(array(
'start' => 0,
'limit' => 20,
'sort' => $this->defaultSortField,
'dir' => $this->defaultSortDirection,
'combo' => false,
'query' => '',
));
return true;
}
/**
* {@inheritDoc}
* @return mixed
*/
public function process() {
$beforeQuery = $this->beforeQuery();
if ($beforeQuery !== true) {
return $this->failure($beforeQuery);
}
$data = $this->getData();
$list = $this->iterate($data);
return $this->outputArray($list,$data['total']);
}
/**
* Allow stoppage of process before the query
* @return boolean
*/
public function beforeQuery() {
return true;
}
/**
* Iterate across the data
*
* @param array $data
* @return array
*/
public function iterate(array $data) {
$list = array();
$list = $this->beforeIteration($list);
$this->currentIndex = 0;
/** @var xPDOObject|modAccessibleObject $object */
foreach ($data['results'] as $object) {
if ($this->checkListPermission && $object instanceof modAccessibleObject && !$object->checkPolicy('list')) continue;
$objectArray = $this->prepareRow($object);
if (!empty($objectArray) && is_array($objectArray)) {
$list[] = $objectArray;
$this->currentIndex++;
}
}
$list = $this->afterIteration($list);
return $list;
}
/**
* Can be used to insert a row before iteration
* @param array $list
* @return array
*/
public function beforeIteration(array $list) {
return $list;
}
/**
* Can be used to insert a row after iteration
* @param array $list
* @return array
*/
public function afterIteration(array $list) {
return $list;
}
/**
* Get the data of the query
* @return array
*/
public function getData() {
$data = array();
$limit = intval($this->getProperty('limit'));
$start = intval($this->getProperty('start'));
/* query for chunks */
$c = $this->modx->newQuery($this->classKey);
$c = $this->prepareQueryBeforeCount($c);
$data['total'] = $this->modx->getCount($this->classKey,$c);
$c = $this->prepareQueryAfterCount($c);
$sortClassKey = $this->getSortClassKey();
$sortKey = $this->modx->getSelectColumns($sortClassKey,$this->getProperty('sortAlias',$sortClassKey),'',array($this->getProperty('sort')));
if (empty($sortKey)) $sortKey = $this->getProperty('sort');
$c->sortby($sortKey,$this->getProperty('dir'));
if ($limit > 0) {
$c->limit($limit,$start);
}
$data['results'] = $this->modx->getCollection($this->classKey,$c);
return $data;
}
/**
* Can be used to provide a custom sorting class key for the default sorting columns
* @return string
*/
public function getSortClassKey() {
return $this->classKey;
}
/**
* Can be used to adjust the query prior to the COUNT statement
*
* @param xPDOQuery $c
* @return xPDOQuery
*/
public function prepareQueryBeforeCount(xPDOQuery $c) {
return $c;
}
/**
* Can be used to prepare the query after the COUNT statement
*
* @param xPDOQuery $c
* @return xPDOQuery
*/
public function prepareQueryAfterCount(xPDOQuery $c) {
return $c;
}
/**
* Prepare the row for iteration
* @param xPDOObject $object
* @return array
*/
public function prepareRow(xPDOObject $object) {
return $object->toArray();
}
}
/**
* A utility abstract class for defining create-based processors
* @abstract
*/
abstract class modObjectCreateProcessor extends modObjectProcessor {
/** @var string $beforeSaveEvent The name of the event to fire before saving */
public $beforeSaveEvent = '';
/** @var string $afterSaveEvent The name of the event to fire after saving */
public $afterSaveEvent = '';
/**
* {@inheritDoc}
* @return boolean
*/
public function initialize() {
$this->object = $this->modx->newObject($this->classKey);
return true;
}
/**
* Process the Object create processor
* {@inheritDoc}
* @return mixed
*/
public function process() {
/* Run the beforeSet method before setting the fields, and allow stoppage */
$canSave = $this->beforeSet();
if ($canSave !== true) {
return $this->failure($canSave);
}
$this->object->fromArray($this->getProperties());
/* run the before save logic */
$canSave = $this->beforeSave();
if ($canSave !== true) {
return $this->failure($canSave);
}
/* run object validation */
if (!$this->object->validate()) {
/** @var modValidator $validator */
$validator = $this->object->getValidator();
if ($validator->hasMessages()) {
foreach ($validator->getMessages() as $message) {
$this->addFieldError($message['field'],$this->modx->lexicon($message['message']));
}
}
}
$preventSave = $this->fireBeforeSaveEvent();
if (!empty($preventSave)) {
return $this->failure($preventSave);
}
/* save element */
if ($this->object->save() == false) {
$this->modx->error->checkValidation($this->object);
return $this->failure($this->modx->lexicon($this->objectType.'_err_save'));
}
$this->afterSave();
$this->fireAfterSaveEvent();
$this->logManagerAction();
return $this->cleanup();
}
/**
* Return the success message
* @return array
*/
public function cleanup() {
return $this->success('',$this->object);
}
/**
* Override in your derivative class to do functionality before the fields are set on the object
* @return boolean
*/
public function beforeSet() { return !$this->hasErrors(); }
/**
* Override in your derivative class to do functionality after save() is run
* @return boolean
*/
public function beforeSave() { return !$this->hasErrors(); }
/**
* Override in your derivative class to do functionality before save() is run
* @return boolean
*/
public function afterSave() { return true; }
/**
* Fire before save event. Return true to prevent saving.
* @return boolean
*/
public function fireBeforeSaveEvent() {
$preventSave = false;
if (!empty($this->beforeSaveEvent)) {
/** @var boolean|array $OnBeforeFormSave */
$OnBeforeFormSave = $this->modx->invokeEvent($this->beforeSaveEvent,array(
'mode' => modSystemEvent::MODE_NEW,
'data' => $this->object->toArray(),
$this->primaryKeyField => 0,
$this->objectType => &$this->object,
'object' => &$this->object, // for backwards compatibility, do not use this key
));
if (is_array($OnBeforeFormSave)) {
$preventSave = false;
foreach ($OnBeforeFormSave as $msg) {
if (!empty($msg)) {
$preventSave .= $msg."\n";
}
}
} else {
$preventSave = $OnBeforeFormSave;
}
}
return $preventSave;
}
/**
* Fire the after save event
* @return void
*/
public function fireAfterSaveEvent() {
if (!empty($this->afterSaveEvent)) {
$this->modx->invokeEvent($this->afterSaveEvent,array(
'mode' => modSystemEvent::MODE_NEW,
$this->primaryKeyField => $this->object->get($this->primaryKeyField),
$this->objectType => &$this->object,
'object' => &$this->object, // for backwards compatibility, do not use this key
));
}
}
/**
* @param array $criteria
* @return int
*/
public function doesAlreadyExist(array $criteria) {
return $this->modx->getCount($this->classKey,$criteria);
}
/**
* Log the removal manager action
* @return void
*/
public function logManagerAction() {
$this->modx->logManagerAction($this->objectType.'_create',$this->classKey,$this->object->get($this->primaryKeyField));
}
}
/**
* A utility abstract class for defining update-based processors
* @abstract
*/
abstract class modObjectUpdateProcessor extends modObjectProcessor {
public $checkSavePermission = true;
/** @var string $beforeSaveEvent The name of the event to fire before saving */
public $beforeSaveEvent = '';
/** @var string $afterSaveEvent The name of the event to fire after saving */
public $afterSaveEvent = '';
public function initialize() {
$primaryKey = $this->getProperty($this->primaryKeyField,false);
if (empty($primaryKey)) return $this->modx->lexicon($this->objectType.'_err_ns');
$this->object = $this->modx->getObject($this->classKey,$primaryKey);
if (empty($this->object)) return $this->modx->lexicon($this->objectType.'_err_nfs',array($this->primaryKeyField => $primaryKey));
if ($this->checkSavePermission && $this->object instanceof modAccessibleObject && !$this->object->checkPolicy('save')) {
return $this->modx->lexicon('access_denied');
}
return true;
}
/**
* {@inheritDoc}
* @return mixed
*/
public function process() {
/* Run the beforeSet method before setting the fields, and allow stoppage */
$canSave = $this->beforeSet();
if ($canSave !== true) {
return $this->failure($canSave);
}
$this->object->fromArray($this->getProperties());
/* Run the beforeSave method and allow stoppage */
$canSave = $this->beforeSave();
if ($canSave !== true) {
return $this->failure($canSave);
}
/* run object validation */
if (!$this->object->validate()) {
/** @var modValidator $validator */
$validator = $this->object->getValidator();
if ($validator->hasMessages()) {
foreach ($validator->getMessages() as $message) {
$this->addFieldError($message['field'],$this->modx->lexicon($message['message']));
}
}
}
/* run the before save event and allow stoppage */
$preventSave = $this->fireBeforeSaveEvent();
if (!empty($preventSave)) {
return $this->failure($preventSave);
}
if ($this->saveObject() == false) {
return $this->failure($this->modx->lexicon($this->objectType.'_err_save'));
}
$this->afterSave();
$this->fireAfterSaveEvent();
$this->logManagerAction();
return $this->cleanup();
}
/**
* Abstract the saving of the object out to allow for transient and non-persistent object updating in derivative
* classes
* @return boolean
*/
public function saveObject() {
return $this->object->save();
}
/**
* Override in your derivative class to do functionality before the fields are set on the object
* @return boolean
*/
public function beforeSet() { return !$this->hasErrors(); }
/**
* Override in your derivative class to do functionality before save() is run
* @return boolean
*/
public function beforeSave() { return !$this->hasErrors(); }
/**
* Override in your derivative class to do functionality after save() is run
* @return boolean
*/
public function afterSave() { return true; }
/**
* Return the success message
* @return array
*/
public function cleanup() {
return $this->success('',$this->object);
}
/**
* Fire before save event. Return true to prevent saving.
* @return boolean
*/
public function fireBeforeSaveEvent() {
$preventSave = false;
if (!empty($this->beforeSaveEvent)) {
/** @var boolean|array $OnBeforeFormSave */
$OnBeforeFormSave = $this->modx->invokeEvent($this->beforeSaveEvent,array(
'mode' => modSystemEvent::MODE_UPD,
'data' => $this->object->toArray(),
$this->primaryKeyField => $this->object->get($this->primaryKeyField),
$this->objectType => &$this->object,
));
if (is_array($OnBeforeFormSave)) {
$preventSave = false;
foreach ($OnBeforeFormSave as $msg) {
if (!empty($msg)) {
$preventSave .= $msg."\n";
}
}
} else {
$preventSave = $OnBeforeFormSave;
}
}
return $preventSave;
}
/**
* Fire the after save event
* @return void
*/
public function fireAfterSaveEvent() {
if (!empty($this->afterSaveEvent)) {
$this->modx->invokeEvent($this->afterSaveEvent,array(
'mode' => modSystemEvent::MODE_UPD,
$this->primaryKeyField => $this->object->get($this->primaryKeyField),
$this->objectType => &$this->object,
));
}
}
/**
* Log the removal manager action
* @return void
*/
public function logManagerAction() {
$this->modx->logManagerAction($this->objectType.'_update',$this->classKey,$this->object->get($this->primaryKeyField));
}
}
/**
* A utility abstract class for defining duplicate-based processors
* @abstract
*/
class modObjectDuplicateProcessor extends modObjectProcessor {
/** @var boolean $checkSavePermission Whether or not to check the save permission on modAccessibleObjects */
public $checkSavePermission = true;
/** @var xPDOObject $newObject The newly duplicated object */
public $newObject;
public $nameField = 'name';
/**
* {@inheritDoc}
* @return boolean
*/
public function initialize() {
$primaryKey = $this->getProperty($this->primaryKeyField,false);
if (empty($primaryKey)) return $this->modx->lexicon($this->objectType.'_err_ns');
$this->object = $this->modx->getObject($this->classKey,$primaryKey);
if (empty($this->object)) return $this->modx->lexicon($this->objectType.'_err_nfs',array($this->primaryKeyField => $primaryKey));
if ($this->checkSavePermission && $this->object instanceof modAccessibleObject && !$this->object->checkPolicy('save')) {
return $this->modx->lexicon('access_denied');
}
$this->newObject = $this->modx->newObject($this->classKey);
return true;
}
/**
* {@inheritDoc}
* @return mixed
*/
public function process() {
/* Run the beforeSet method before setting the fields, and allow stoppage */
$canSave = $this->beforeSet();
if ($canSave !== true) {
return $this->failure($canSave);
}
$this->newObject->fromArray($this->object->toArray());
$name = $this->getNewName();
$this->setNewName($name);
if ($this->alreadyExists($name)) {
$this->addFieldError($this->nameField,$this->modx->lexicon($this->objectType.'_err_ae',array('name' => $name)));
}
$canSave = $this->beforeSave();
if ($canSave !== true) {
return $this->failure($canSave);
}
/* save new chunk */
if ($this->newObject->save() === false) {
$this->modx->error->checkValidation($this->newObject);
return $this->failure($this->modx->lexicon($this->objectType.'_err_duplicate'));
}
$this->afterSave();
$this->logManagerAction();
return $this->cleanup();
}
/**
* Cleanup and return a response.
*
* @return array
*/
public function cleanup() {
return $this->success('',$this->newObject);
}
/**
* Override in your derivative class to do functionality before the fields are set on the object
* @return boolean
*/
public function beforeSet() { return !$this->hasErrors(); }
/**
* Run any logic before the object has been duplicated. May return false to prevent duplication.
* @return boolean
*/
public function beforeSave() { return !$this->hasErrors(); }
/**
* Run any logic after the object has been duplicated
* @return boolean
*/
public function afterSave() { return true; }
/**
* Get the new name for the duplicate
* @return string
*/
public function getNewName() {
$name = $this->getProperty($this->nameField);
$newName = !empty($name) ? $name : $this->modx->lexicon('duplicate_of',array('name' => $this->object->get($this->nameField)));
return $newName;
}
/**
* Set the new name to the new object
* @param string $name
* @return string
*/
public function setNewName($name) {
return $this->newObject->set($this->nameField,$name);
}
/**
* Check to see if an object already exists with that name
* @param string $name
* @return boolean
*/
public function alreadyExists($name) {
return $this->modx->getCount($this->classKey,array(
$this->nameField => $name,
)) > 0;
}
/**
* Log a manager action
* @return void
*/
public function logManagerAction() {
$this->modx->logManagerAction($this->objectType.'_duplicate',$this->classKey,$this->newObject->get('id'));
}
}
/**
* A utility abstract class for defining remove-based processors
* @abstract
*/
abstract class modObjectRemoveProcessor extends modObjectProcessor {
/** @var boolean $checkRemovePermission If set to true, will check the remove permission on modAccessibleObjects */
public $checkRemovePermission = true;
/** @var string $beforeRemoveEvent The name of the event to fire before removal */
public $beforeRemoveEvent = '';
/** @var string $afterRemoveEvent The name of the event to fire after removal */
public $afterRemoveEvent = '';
public function initialize() {
$primaryKey = $this->getProperty($this->primaryKeyField,false);
if (empty($primaryKey)) return $this->modx->lexicon($this->objectType.'_err_ns');
$this->object = $this->modx->getObject($this->classKey,$primaryKey);
if (empty($this->object)) return $this->modx->lexicon($this->objectType.'_err_nfs',array($this->primaryKeyField => $primaryKey));
if ($this->checkRemovePermission && $this->object instanceof modAccessibleObject && !$this->object->checkPolicy('remove')) {
return $this->modx->lexicon('access_denied');
}
return true;
}
public function process() {
$canRemove = $this->beforeRemove();
if ($canRemove !== true) {
return $this->failure($canRemove);
}
$preventRemoval = $this->fireBeforeRemoveEvent();
if (!empty($preventRemoval)) {
return $this->failure($preventRemoval);
}
if ($this->object->remove() == false) {
return $this->failure($this->modx->lexicon($this->objectType.'_err_remove'));
}
$this->afterRemove();
$this->fireAfterRemoveEvent();
$this->logManagerAction();
$this->cleanup();
return $this->success('',array($this->primaryKeyField => $this->object->get($this->primaryKeyField)));
}
/**
* Can contain pre-removal logic; return false to prevent remove.
* @return boolean
*/
public function beforeRemove() { return !$this->hasErrors(); }
/**
* Can contain post-removal logic.
* @return bool
*/
public function afterRemove() { return true; }
/**
* Log the removal manager action
* @return void
*/
public function logManagerAction() {
$this->modx->logManagerAction($this->objectType.'_delete',$this->classKey,$this->object->get($this->primaryKeyField));
}
/**
* After removal, manager action log, and event firing logic
* @return void
*/
public function cleanup() {}
/**
* If specified, fire the before remove event
* @return boolean Return false to allow removal; non-empty to prevent it
*/
public function fireBeforeRemoveEvent() {
$preventRemove = false;
if (!empty($this->beforeRemoveEvent)) {
$response = $this->modx->invokeEvent($this->beforeRemoveEvent,array(
$this->primaryKeyField => $this->object->get($this->primaryKeyField),
$this->objectType => &$this->object,
));
$preventRemove = $this->processEventResponse($response);
}
return $preventRemove;
}
/**
* If specified, fire the after remove event
* @return void
*/
public function fireAfterRemoveEvent() {
if (!empty($this->afterRemoveEvent)) {
$this->modx->invokeEvent($this->afterRemoveEvent,array(
$this->primaryKeyField => $this->object->get($this->primaryKeyField),
$this->objectType => &$this->object,
));
}
}
}
/**
* Utility class for exporting an object
* @abstract
*/
abstract class modObjectExportProcessor extends modObjectGetProcessor {
/** @var string $downloadProperty */
public $downloadProperty = 'download';
/** @var string $nameField */
public $nameField = 'name';
/** @var XMLWriter $xml */
public $xml;
public function cleanup() {
if (!extension_loaded('XMLWriter') || !class_exists('XMLWriter')) {
return $this->failure($this->modx->lexicon('xmlwriter_err_nf'));
}
$download = $this->getProperty($this->downloadProperty);
if (empty($download)) {
return $this->cache();
}
return $this->download();
}
/**
* Cache the data to an export file
* @return array|string
*/
public function cache() {
$this->xml = new XMLWriter();
$this->xml->openMemory();
$this->xml->startDocument('1.0','UTF-8');
$this->xml->setIndent(true);
$this->xml->setIndentString(' ');
$this->prepareXml();
$this->xml->endDocument();
$data = $this->xml->outputMemory();
$f = $this->object->get($this->nameField).'.xml';
$fileName = $this->modx->getOption('core_path',null,MODX_CORE_PATH).'export/'.$this->objectType.'/'.$f;
/** @var modCacheManager $cacheManager */
$cacheManager = $this->modx->getCacheManager();
$cacheManager->writeFile($fileName,$data);
$this->logManagerAction();
return $this->success($f);
}
/**
* Must be declared in your derivative class. Used to prepare the data to export.
* @abstract
*/
abstract public function prepareXml();
/**
* Attempt to download the exported file to the browser
* @return mixed
*/
public function download() {
$file = $this->object->get($this->nameField).'.xml';
$f = $this->modx->getOption('core_path').'export/'.$this->objectType.'/'.$file;
$name = strtolower(str_replace(array(' ','/'),'-',$this->object->get($this->nameField)));
if (!is_file($f)) return $this->failure($f);
$o = file_get_contents($f);
header('Content-Type: application/force-download');
header('Content-Disposition: attachment; filename="'.$name.'.'.$this->objectType.'.xml"');
return $o;
}
/**
* Log the export manager action
* @return void
*/
public function logManagerAction() {
$this->modx->logManagerAction($this->objectType.'_export',$this->classKey,$this->object->get($this->primaryKeyField));
}
}
/**
* Utility class for importing an object
* @abstract
*/
abstract class modObjectImportProcessor extends modObjectProcessor {
/** @var string $nameField The name, or unique, field for the object */
public $nameField = 'name';
/** @var boolean $setName Whether or not to attempt to set the name field */
public $setName = true;
/** @var string $fileProperty The property that contains the file data */
public $fileProperty = 'file';
/** @var string $xml The parsed XML from the file */
public $xml = '';
public function initialize() {
$file = $this->getProperty($this->fileProperty);
if (empty($file) || !isset($file['tmp_name'])) return $this->modx->lexicon('import_err_upload');
if ($file['error'] != 0) return $this->modx->lexicon('import_err_upload');
if (!file_exists($file['tmp_name'])) return $this->modx->lexicon('import_err_upload');
$this->xml = file_get_contents($file['tmp_name']);
if (empty($this->xml)) return $this->modx->lexicon('import_err_upload');
if (!function_exists('simplexml_load_string')) {
return $this->failure($this->modx->lexicon('simplexml_err_nf'));
}
return true;
}
public function process() {
/** @var SimpleXmlElement $xml */
$this->xml = @simplexml_load_string($this->xml);
if (empty($this->xml)) return $this->failure($this->modx->lexicon('import_err_xml'));
$this->object = $this->modx->newObject($this->classKey);
if ($this->setName) {
$name = (string)$this->xml->name;
if ($this->alreadyExists($name)) {
$this->object->set($this->nameField,$this->modx->lexicon('duplicate_of',array('name' => $name)));
} else {
$this->object->set($this->nameField,$name);
}
}
$canSave = $this->beforeSave();
if ($canSave !== true) {
return $this->failure($canSave);
}
if (!$this->object->save()) {
return $this->failure($this->modx->lexicon('policy_template_err_save'));
}
$this->afterSave();
$this->logManagerAction();
return $this->success();
}
/**
* Do any before save logic
* @return boolean
*/
public function beforeSave() {
return !$this->hasErrors();
}
/**
* Do any after save logic
* @return boolean
*/
public function afterSave() {
return !$this->hasErrors();
}
/**
* Check to see if the object already exists with this name field
* @param string $name
* @return bool
*/
public function alreadyExists($name) {
return $this->modx->getCount($this->classKey,array($this->nameField => $name)) > 0;
}
/**
* Log the export manager action
* @return void
*/
public function logManagerAction() {
$this->modx->logManagerAction($this->objectType.'_import',$this->classKey,$this->object->get($this->primaryKeyField));
}
}
/**
* Response class for Processor executions
*
* @package modx
*/
class modProcessorResponse {
/**
* When there is only a general error
* @const ERROR_GENERAL
*/
const ERROR_GENERAL = 'error_general';
/**
* When there are only field-specific errors
* @const ERROR_FIELD
*/
const ERROR_FIELD = 'error_field';
/**
* When there is both field-specific and general errors
* @const ERROR_BOTH
*/
const ERROR_BOTH = 'error_both';
/**
* The field for the error type
* @const ERROR_TYPE
*/
const ERROR_TYPE = 'error_type';
/**
* @var modX A reference to the modX object
*/
public $modx = null;
/**
* @var array|string A reference to the full response
*/
public $response = null;
/**
* @var array A collection of modProcessorResponseError objects for each field-specific error
*/
public $errors = array();
/**
* @var string The error type for this response
*/
public $error_type = '';
/**
* The constructor for modProcessorResponse
*
* @param modX $modx A reference to the modX object.
* @param array $response The array response from the modX.runProcessor method
*/
function __construct(modX &$modx,$response = array()) {
$this->modx =& $modx;
$this->response = $response;
if ($this->isError()) {
if (!empty($response['errors']) && is_array($response['errors'])) {
foreach ($response['errors'] as $error) {
$this->errors[] = new modProcessorResponseError($error);
}
if (!empty($response['message'])) {
$this->error_type = modProcessorResponse::ERROR_BOTH;
} else {
$this->error_type = modProcessorResponse::ERROR_FIELD;
}
} else {
$this->error_type = modProcessorResponse::ERROR_GENERAL;
}
}
}
/**
* Returns the type of error for this response
* @return string The type of error returned
*/
public function getErrorType() {
return $this->error_type;
}
/**
* Checks to see if the response is an error
* @return Returns true if the response was a success, otherwise false
*/
public function isError() {
return empty($this->response) || (is_array($this->response) && (!array_key_exists('success', $this->response) || empty($this->response['success'])));
}
/**
* Returns true if there is a general status message for the response.
* @return boolean True if there is a general message
*/
public function hasMessage() {
return isset($this->response['message']) && !empty($this->response['message']) ? true : false;
}
/**
* Gets the general status message for the response.
* @return string The status message
*/
public function getMessage() {
return isset($this->response['message']) ? $this->response['message'] : '';
}
/**
* Returns the entire response object in array form
* @return array The array response
*/
public function getResponse() {
return $this->response;
}
/**
* Returns true if an object was sent with this response.
* @return boolean True if an object was sent.
*/
public function hasObject() {
return isset($this->response['object']) && !empty($this->response['object']) ? true : false;
}
/**
* Returns the array object, if is sent in the response
* @return array The object in the response, usually the object being performed on.
*/
public function getObject() {
return isset($this->response['object']) ? $this->response['object'] : array();
}
/**
* An array of modProcessorResponseError objects for each field-specific error
* @return array
*/
public function getFieldErrors() {
return $this->errors;
}
/**
* Checks to see if there are any field-specific errors in this response
* @return boolean True if there were field-specific errors
*/
public function hasFieldErrors() {
return !empty($this->errors) ? true : false;
}
/**
* Gets all errors and adds them all into an array.
*
* @param string $fieldErrorSeparator The separator to use between fieldkey and message for field-specific errors.
* @return array An array of all errors.
*/
public function getAllErrors($fieldErrorSeparator = ': ') {
$errormsgs = array();
if ($this->hasMessage()) {
$errormsgs[] = $this->getMessage();
}
if ($this->hasFieldErrors()) {
$errors = $this->getFieldErrors();
if (!empty($errors)) {
foreach ($errors as $error) {
$errormsgs[] = $error->field.$fieldErrorSeparator.$error->message;
}
}
}
return $errormsgs;
}
}
/**
* An abstraction class of field-specific errors for a processor response
*
* @package modx
*/
class modProcessorResponseError {
/**
* @var array The error data itself
*/
public $error = null;
/**
* @var string The field key that the error occurred on
*/
public $field = null;
/**
* @var string The message that was sent for the field error
*/
public $message = '';
/**
* The constructor for the modProcessorResponseError class
*
* @param array $error An array error response
*/
function __construct($error = array()) {
$this->error = $error;
if (isset($error['id']) && !empty($error['id'])) { $this->field = $error['id']; }
if (isset($error['msg']) && !empty($error['msg'])) { $this->message = $error['msg']; }
}
/**
* Returns the message for the field-specific error
* @return string
*/
public function getMessage() {
return $this->message;
}
/**
* Returns the field key for the field-specific error
* @return string
*/
public function getField() {
return $this->field;
}
/**
* Returns the array data for the field-specific error
* @return array
*/
public function getError() {
return $this->error;
}
}