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Path:
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File: api.php
<?php if (!defined('VB_ENTRY')) die('Access denied.'); /*========================================================================*\ || ###################################################################### || || # vBulletin 5.3.4 || # ------------------------------------------------------------------ # || || # Copyright 2000-2017 vBulletin Solutions Inc. All Rights Reserved. # || || # This file may not be redistributed in whole or significant part. # || || # ----------------- VBULLETIN IS NOT FREE SOFTWARE ----------------- # || || # http://www.vbulletin.com | http://www.vbulletin.com/license.html # || || ###################################################################### || \*========================================================================*/ abstract class vB_Api { use vB_Trait_NoSerialize; /** * We want API subclasses to access the instances only through getters * @var array */ private static $instancesRaw; private static $instances; private static $wrappers; // configuration /** * Indicates whether the API was disabled * @var bool */ protected $disabled = false; /** * Contains white listed methods which act as normal when API is disabled * no matter of special scenarios like forum closed, password expiry, ip ban and others. * * @var array $disableWhiteList */ protected $disableWhiteList = array(); /** * Contains white listed methods which return a false response when API is disabled * in special scenarios like forum closed, password expiry, ip ban and others. * * @var array $disableFalseReturnOnly */ protected $disableFalseReturnOnly = array(); /** * API Controller * * @var string */ protected $controller; /** * Database object. * * @var vB_Database */ protected $db; public static function getApiClassName($controller) { list($c, $package) = self::getApiClassNameInternal($controller); return $c; } protected static function getApiClassNameInternal($controller) { $values = explode(':', $controller); $package = ''; if(count($values) == 1) { $c = 'vB_Api_' . ucfirst(strtolower($controller)); } else { list($package, $controller) = $values; $c = ucfirst($package) . '_Api_' . ucfirst(strtolower($controller)); } return array($c, $package); } protected static function getApiClass($controller, $errorCheck = true) { if (!$controller) { //The error originally referred to php 5.2, but the minumum requirement for vB5 is php 5.3 throw new Exception("The API should be called as vB_Api::instance('Name'), not vB_Api_Name::instance()"); } else { list($c, $package) = self::getApiClassNameInternal($controller); if($package) { $products = vB::getDatastore()->getValue('products'); if(empty($products[$package])) { throw new vB_Exception_Api('api_class_product_x_is_disabled', array($controller, $package)); } } // Need to bypass this if not internal as calls may be to a custom API extension class. if ($errorCheck) { if (!class_exists($c)) { throw new Exception(sprintf("Can't find class %s", htmlspecialchars($c))); } if (!is_subclass_of($c, 'vB_Api')) { throw new Exception(sprintf('Class %s is not a subclass of vB_Api', htmlspecialchars($c))); } } //we don't always check the instanceof case if (strcasecmp($c, 'vB_Api_LogWrapper') == 0 OR strcasecmp($c, 'vB_Api_Wrapper') == 0) { throw new Exception(sprintf('Class %s is not a valid API class', htmlspecialchars($c))); } } return $c; } /** * Wrap the api object with the log wrapper class if needed. */ private static function wrapLoggerIfNeeded($controller, $api_object) { //only check the options once static $needLog = NULL; if (is_null($needLog)) { $config = vB::getConfig(); $needLog = (!empty($config['Misc']['debuglogging'])); } if ($needLog) { return new vB_Api_Logwrapper($controller, $api_object); } else { return $api_object; } } /** * Returns an instance of the API object which doesn't handle exceptions * This should only be used in other API objects, not for clients of the API * @param string $controller -- name of the API controller to load * @param bool $refresh_cache -- true if we want to force the cache to update with a new api object * primarily intended for testing * @return vB_Api */ public static function instanceInternal($controller, $refresh_cache = false) { $c = self::getApiClass($controller); if (!isset(self::$instances[$c]) OR $refresh_cache) { if (!isset(self::$instancesRaw[$c]) OR $refresh_cache) { self::$instancesRaw[$c] = new $c; self::$instancesRaw[$c]->setController($controller); } self::$instances[$c] = self::wrapLoggerIfNeeded($controller, self::$instancesRaw[$c]); } return self::$instances[$c]; } /** * Returns an instance of the API object which translates exceptions to an array * Use this method for API clients. * @param string $controller -- name of the API controller to load * @param bool $refresh_cache -- true if we want to force the cache to update with a new api object * primarily intended for testing * @return vB_Api */ public static function instance($controller, $refresh_cache = false) { $c = self::getApiClass($controller, false); if (!isset(self::$wrappers[$c]) OR $refresh_cache) { if (!isset(self::$instancesRaw[$c]) OR $refresh_cache) { if (class_exists($c)) { self::$instancesRaw[$c] = new $c; self::$instancesRaw[$c]->setController($controller); } else { self::$instancesRaw[$c] = new vB_Api_Null(); } } self::$wrappers[$c] = new vB_Api_Wrapper($controller, self::$instancesRaw[$c]); self::$wrappers[$c] = self::wrapLoggerIfNeeded($controller, self::$wrappers[$c]); } return self::$wrappers[$c]; } /** * Clears all previously loaded API objects. * * Intended for use in tests where the loading pattern can cause issues * with objects that cache thier own data. * */ public static function clearCache() { self::$wrappers = array(); self::$instances = array(); self::$instancesRaw = array(); vB_Api_Extensions::resetExtensions(); } /** * Call the given api function by name with a named arguments list. * Used primarily to translate REST requests into API calls. * * @param string $method -- the name of the method to call * @param array $args -- The list of args to call. This is a name => value map that will * be matched up to the names of the API method. Order is not important. The names are * case sensitive. * * @return The return of the method or an error if the method doesn't exist, or is * static, a constructor or destructor, or otherwise shouldn't be callable as * and API method. It is also an error if the value of a paramater is not provided * and that parameter doesn't have a default value. */ public function callNamed() { list ($method, $args) = func_get_args(); if (!is_callable(array($this, $method))) { // if the method does not exist, an extension might define it return; } $reflection = new ReflectionMethod($this, $method); if( $reflection->isConstructor() OR $reflection->isDestructor() OR $reflection->isStatic() OR $method == "callNamed" ) { //todo return error message return; } $php_args = array(); foreach($reflection->getParameters() as $param) { // the param value can be null, so don't use isset if(array_key_exists($param->getName(), $args)) { $php_args[] = &$args[$param->getName()]; } else { if ($param->isDefaultValueAvailable()) { $php_args[] = $param->getDefaultValue(); } else { throw new Exception('Required argument missing: ' . htmlspecialchars($param->getName())); } } } return $reflection->invokeArgs($this, $php_args); } /** * Returns vb5 api method name. * May alter request array. * @param string $method -- vb4 method name * @param array $request -- $_REQUEST array for this api request * @return string */ public static function map_vb4_input_to_vb5($method, &$request) { if(array_key_exists($method, vB_Api::$vb4_input_mappings)) { $mapping = vB_Api::$vb4_input_mappings[$method]; if(array_key_exists('request_mappings', $mapping)) { $request_mappings = $mapping['request_mappings']; foreach($request_mappings as $mapping_from => $mapping_to) { if(!empty($request[$mapping_from])) { $request[$mapping_to] = $request[$mapping_from]; unset($request[$mapping_from]); } } } if(array_key_exists('method', $mapping)) { return $mapping['method']; } } else if (strpos($method, "cms.") === 0) { // CMS method. return vB_Api::cms_vb4_to_vb5_method_mapping($method, $request); } return vB_Api::default_vb4_to_vb5_method_mapping($method); } private static $vb4_input_mappings = array( 'blog.post_comment' => array( 'method' => 'vb4_blog.post_comment' ), 'blog.post_postcomment' => array( 'method' => 'vb4_blog.post_postcomment' ), 'blog.post_updateblog' => array( 'method' => 'vb4_blog.post_updateblog' ), 'blog.post_newblog' => array( 'method' => 'vb4_blog.post_newblog' ), 'blog.post_editblog' => array( 'method' => 'vb4_blog.post_editblog' ), 'blog_list' => array( 'method' => 'vb4_blog.bloglist' ), 'api_init' => array( 'method' => 'api.init' ), 'api_cmssectionlist' => array( 'method' => 'Vb4_Cms.sectionlist', ), 'api_cmscategorylist' => array( 'method' => 'Vb4_Cms.categorylist', ), /* // These can no longer be mapped directly to vB_Api_User::login/logout // due to additional processing of devicetoken that may be required // for mapi calls. 'login_login' => array( 'method' => 'user.login', 'request_mappings' => array( 'vb_login_username' => 'username', 'vb_login_password' => 'password', 'vb_login_md5password' => 'md5password', 'vb_login_md5password_utf' => 'md5passwordutf' ) ), 'login_logout' => array( 'method' => 'user.logout' ), */ 'get_vbfromfacebook' => array( 'method' => 'vb4_facebook.getVbfromfacebook', ), ); private static function cms_vb4_to_vb5_method_mapping($method, &$request) { define('VB_API_CMS', true); // I don't think we use this in vB5. TODO: remove /* CMS method calls look like... (depends on the call...) cms.class_{nodeid}_function [_other?] cms.content_{nodeid}_view[_contentpagenum] cms.list_category_{categoryid} */ // Based roughly on vB4's api.php list($controller, $segment2, $segment3, $segment4) = explode("_", $method); $controller = str_replace("cms.", "", $controller); $controller = strtolower($controller); // standardize to lowercase just in case. $action = "call"; // convert path segments to function params switch($controller) { case 'list': $action = strtolower($segment2); switch($action) { case 'category': // list_category_[categoryid] $request['categoryid'] = intval($segment3); break; case 'section': $request['sectionid'] = intval($segment3); break; case 'author': $request['userid'] = intval($segment3); break; default: break; } break; case 'content': default: $nodeid = intval($segment2); if ($nodeid == 1) { // Special case - Seems like this might be hard coded in the client for the "front page", // or we're missing something in the api_init return that tells the client what nodeid // the "front page" is... // For now, intercept & replace with article channel nodeid // TODO: Check if this is truly necessary with mobile team $articlesRootChannelId = vB_Api::instanceInternal('content_channel')->fetchChannelIdByGUID(vB_Channel::DEFAULT_ARTICLE_PARENT); $nodeid = $articlesRootChannelId; } $action = strtolower($segment3); // cms.content_{nodeid}_view_{contentpagenum} $request['nodeid'] = intval($nodeid); if (!empty($segment4) AND is_numeric($segment4)) { $request['contentpagenum'] = intval($segment4); } break; } $action = strtolower($action); /* Not really sure if this is the best way to go about it, but I don't want to create multiple classes for the different vB4 CMS controllers, so I'll just group them all in the vb4_cms class. */ $className = "Vb4_Cms"; $functionName = ucfirst($controller) . "_" . ucfirst($action); return $className . "." . $functionName; } private static function default_vb4_to_vb5_method_mapping($method) { $methodsegments = explode("_", $method); $methodsegments[0] = "VB4_" . $methodsegments[0]; if(count($methodsegments) < 2) { $methodsegments[] = "call"; } elseif(count($methodsegments) > 2) { // Handle strangeness } return implode(".", $methodsegments); } /** * Alters the output array in any way necessary to interface correctly * with vb4. * @param string $method -- vb4 method name * @param array $data -- output array from vb5 */ public static function map_vb5_output_to_vb4($method, &$data) { if(strstr($method, "login_login")) { $copy_data = $data; $copy_data['dbsessionhash'] = $copy_data['sessionhash']; unset($copy_data['sessionhash']); $data = array(); $data["session"] = $copy_data; unset($copy_data); $data["response"]["errormessage"][0] = "redirect_login"; } if(strstr($method, "login_logout")) { $copy_data = $data; $copy_data['dbsessionhash'] = $copy_data['sessionhash']; unset($copy_data['sessionhash']); $data = array(); $data["session"] = $copy_data; unset($copy_data); $data["response"]["errormessage"][0] = "cookieclear"; } self::remove_nulls($data); } private static function remove_nulls(&$data) { foreach ($data as $key => &$value) { if (is_array($value)) { self::remove_nulls($value); } else if ($value === null) { $value = ''; } } } /** * Alters the error array in any way necessary to interface correctly with vb4. * @param string $method -- vb4 method name * @param array $data -- error array from vb5 */ public static function map_vb5_errors_to_vb4($method, &$data) { if(strstr($method,"api_init")) { $data = array(); $data["response"]["errormessage"] = array("apiclientinfomissing"); } else if(strstr($method, "login_login")) { $data = array(); $data["response"]["errormessage"] = array("badlogin"); } else if(strstr($method, "forumdisplay")) { if($data[0][0] == 'invalid_node_id') { $data = array(); $data["response"]["errormessage"] = array("invalidid"); } else { $data = array(); $data["response"]["errormessage"] = array("invalidid"); } } else if(strstr($method, "private_showpm")) { $data = array(); $data["response"]["errormessage"] = array("invalidid"); } else if(strstr($method, "showthread")) { if($data[0][0] == 'invalid_node_id') { $data = array(); $data["response"]["errormessage"] = array("invalidid"); } else { $data = array(); $data["response"]["errormessage"] = array("invalidid"); } } else if(strstr($method, "register_fbconnect")) { if($data[0][0] == 'invalid_password_specified') { $data = array(); $data["response"]["errormessage"] = array("usernotloggedin"); } } } // THIS CODE IS WAS EXTRACTED FROM DIFFERENT FILES OF VB4 BOOTSTRAP AND IS DUPLICATED protected function __construct() { // This is a dummy object $vbulletin just to avoid rewriting all code global $vbulletin; if (empty($vbulletin)) { $vbulletin = vB::get_registry(); } if (empty($vbulletin->db) AND class_exists('vB') AND !empty(vB::$db)) { $vbulletin->db = vB::$db; } } /** * This method checks whether the API method is enabled. * For extensions check make sure $controller property is already set. * * @param string name of the function being called * @param option flag to clear the static value. This is only passed when running unit tests */ public function checkApiState($method) { $closed = vB_Api::instanceInternal('state')->checkBeforeView(); $response = true; if ($closed !== FALSE) { if ($this->isDisableFalseReturnOnly($method)) { $response = false; } else if (!$this->isWhiteListed($method)) { throw new vB_Exception_Api_Disabled($closed['msg']); } } return $response; } /** * Checks if method is white listed when API is disabled. * * @param string API method to check. * @return bool Indicates whether method is or is not a white list. */ protected function isWhiteListed($method) { if (!is_string($method)) { return false; } // extensions check if($elist = vB_Api_Extensions::getExtensions($this->controller)) { foreach ($elist AS $class) { if (in_array($method, $class->disableWhiteList)) { return true; } } } return (in_array($method, $this->disableWhiteList)); } /** * Checks if method returns false response only when API is disabled. * * @param string API method to check. * @return bool Indicates whether method returns false response only. */ protected function isDisableFalseReturnOnly($method) { if (!is_string($method)) { return false; } // extensions check if($elist = vB_Api_Extensions::getExtensions($this->controller)) { foreach ($elist AS $class) { if (in_array($method, $class->disableFalseReturnOnly)) { return true; } } } return (in_array($method, $this->disableFalseReturnOnly)); } /** * Replaces special characters in a given string with dashes to make the string SEO friendly * * @param string The string to be converted */ protected function toSeoFriendly($str) { if (!empty($str)) { return vB_String::getUrlIdent($str); } return $str; } /** * Determines if the calling user has the given admin permission, and if not throws an exception * * Checks for: * * A valid CP Session * * The passed adminpermission. * * @param string The admin permission to check * @return none * @throws inlinemodauth_required -- The current session is not a mod/admin session * @throws nopermission_loggedin -- The user does not have the given permission * @throws no_permission -- The user is not logged in at all. */ protected function checkHasAdminPermission($adminPermission) { $value = $this->hasAdminPermissionInternal($adminPermission); if ($value !== true) { throw new vB_Exception_Api($value); } } /** * Determines if the calling user has the given admin permission * * Useful if you need to know if the calling user but do not care why they do not * have that permission. Generally useful if there is a behavior difference * between admins and non admins, but the call can be processed for either. * * @param string The admin permission to check * @return boolean true if checks pass, false otherwise */ protected function hasAdminPermission($adminPermission) { $value = $this->hasAdminPermissionInternal($adminPermission); return ($value === true); } /** * Internal function to power the previous cover functions * * * @param string The admin permission to check */ private function hasAdminPermissionInternal($adminPermission) { $session = vB::getCurrentSession(); if (!$session->validateCpsession()) { return 'inlinemodauth_required'; } if (!vB::getUserContext()->hasAdminPermission($adminPermission)) { $user = &$session->fetch_userinfo(); //not sure this is required, since I don't think we can pass the validateCpsession //call without being logged in. However its not worth changing at the moment. if ($user['userid'] > 0) { return array( 'nopermission_loggedin', $user['username'], vB_Template_Runtime::fetchStyleVar('right'), $session->get('sessionurl'), $user['securitytoken'], vB::getDatastore()->getOption('frontendurl') ); } else { return 'no_permission'; } } return true; } /** * Determines if the calling user has the given admin permission, and if not throws an exception * * @param string The admin permission to check */ protected function checkIsLoggedIn() { $userId = (int) vB::getUserContext()->fetchUserId(); if ($userId < 1) { throw new vB_Exception_Api('not_logged_no_permission'); } } /** * Set controller * @param string Controller name * */ protected function setController($controller) { if (!is_string($controller)) { throw new vB_Exception_Api('invalid_controller'); } $this->controller = $controller; } protected function inDebugMode() { static $debugMode; if (is_null($debugMode)) { $vb5_config = &vB::getConfig(); $debugMode = (bool) $vb5_config['Misc']['debug']; } return $debugMode; } } /*=========================================================================*\ || ####################################################################### || # NulleD By - vBSupport.org || # CVS: $RCSfile$ - $Revision: 95453 $ || ####################################################################### \*=========================================================================*/
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