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<?php /** * Part of the Services_Blogging package. * * PHP version 5 * * @category Services * @package Services_Blogging * @author Christian Weiske <cweiske@php.net> * @author Anant Narayanan <anant@php.net> * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 * @version CVS: $Id: Blogging.php,v 1.5 2008/11/29 13:15:46 cweiske Exp $ * @link http://pear.php.net/package/Services_Blogging / require_once 'Services/Blogging/Exception.php'; /* * Generic package for several Blogging APIs. * * Create a new instance via * Services_Blogging::factory($driver, $username, $password, $server, $path), * or more easy via * Services_Blogging::discoverDriver($url, $username, $password) . * * Note that some Blogging APIs allow multiple blogs with one * account. These drivers implement Services_Blogging_MultipleBlogsInterface * - you need to call setBlogId($id) before you can use the driver in that case. * * @category Services * @package Services_Blogging * @author Christian Weiske <cweiske@php.net> * @author Anant Narayanan <anant@php.net> * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 * @link http://pear.php.net/package/Services_Blogging * * @todo * Missing drivers * - MovableType * - Conversant * - Manila * - MetaWiki * - Antville / class Services_Blogging { /* * Exception code for a problem with the driver: * - driver does not exist * - driver does not extend base driver class / const ERROR_DRIVER = 101; /* * Exception code when the bloggin system does not support autodiscovery / const ERROR_BLOGHASNTAUTODISCOVERY = 102; /* * Exception code when autodiscovery succeeded, but not matching driver * could be found / const ERROR_NOSUPPORTEDDRIVER = 103; /* * Exception code when something (method, property) is not supported. / const ERROR_NOTSUPPORTED = 104; /* * USER_AGENT to send along during requests. / const USER_AGENT = 'PHP/Services_Blogging-0.2.3'; /* * The factory function that instantiates the appropriate class and returns * the object, so that further methods may be executed. This function serves * as the single entry point for the class. * * @param string $driver The driver name, currently either 'Blogger', * 'MetaWeblog' or 'LiveJournal'. * @param string $username The username of the blog account to connect to. * @param string $password The password of the blog account to connect to. * @param string $server The URI of the blog's server with protocol. * @param string $path The location of the XML-RPC server script. * * @return Services_Blogging_Driver Blogging driver instance * * @throws Services_Blogging_Exception If authentication fails * @throws Services_Blogging_Exception If the driver does not exist. * @throws Services_Blogging_Exception If the driver does not extend the * base driver class * Services_Blogging_Driver / public static function factory($driver, $username, $password, $server, $path) { //security measurement $driver = preg_replace('/[^a-z0-9_]/i', '', $driver); include_once 'Services/Blogging/Driver/' . $driver . '.php'; $strClass = 'Services_Blogging_Driver_' . $driver; if (!class_exists($strClass)) { throw new Services_Blogging_Exception( 'Invalid driver "' . $driver . '" specified!', self::ERROR_DRIVER ); } if (!is_subclass_of($strClass, 'Services_Blogging_Driver')) { throw new Services_Blogging_Exception( 'Driver class ' . $strClass . ' is not a child class' . ' of Services_Blogging_Driver', self::ERROR_DRIVER ); } //handle slighly wrong user input: no path but slash in server if ($path == null && substr($server, -1) == '/') { $server = substr($server, 0, -1); } $class = new $strClass($username, $password, $server, $path); return $class; }//public static function factory($driver, $username, $password, $server, $path) /* * Autodiscover the driver settings from the given blog URL * and create a driver instance. * * @param string $url Blog URL * @param string $username Username for the blog account * @param string $password Password for the blog account * * @return Services_Blogging_Driver The driver object if all goes ok * * @throws Services_Blogging_Exception If an error occured / public static function discoverDriver($url, $username, $password) { $settings = self::discoverSettings($url); if ($settings === false) { throw new Services_Blogging_Exception( 'Autodiscovery of settings not supported by the blog', self::ERROR_BLOGHASNTAUTODISCOVERY ); } $driver = self::getBestAvailableDriver($settings); if ($driver === false) { throw new Services_Blogging_Exception( 'None of the supported drivers available', self::ERROR_NOSUPPORTEDDRIVER ); } return self::factory( $driver, $username, $password, $settings['apis'][$driver]['server'], $settings['apis'][$driver]['path'] ); }//public static function discoverDriver($url, $username, $password) /* * Tries to auto-discover the driver settings for the blog * at the given URL. * Internally, an RSD page is tried to load and read. * * @param string $url Url of the blog * * @return mixed FALSE if nothing found, OR array of settings: * - engineName * - engineLink * - homePageLink * - apis => array (key is name * - name * - preferred * - apiLink (url) * - server (for factory()) * - path (for factory()) * * @link http://archipelago.phrasewise.com/display?page=oldsite/1330.html / public static function discoverSettings($url) { $content = file_get_contents($url); if ($content === false) { return false; } //search for a line like this: //<link rel="EditURI" type="application/rsd+xml" title="RSD" // href="http://blog.bogo/xmlrpc.php?rsd" /> if (!preg_match_all('\|<link\\s+rel="EditURI".+href="(.+?)"\|', $content, $matches) ) { return false; } $rsdUrl = reset($matches[1]); $root = simplexml_load_string(file_get_contents($rsdUrl)); if ($root === false) { return false; } $apis = array(); foreach ($root->service->apis->api as $api) { $ap = array(); $ap['name'] = (string)$api['name']; if ($ap['name'] == 'Movable Type') { $ap['name'] = 'MovableType'; } $ap['preferred'] = $api['preferred'] == 1 \|\| $api['preferred'] == 'true'; $ap['apiLink'] = (string)$api['apiLink']; //try to get server and path $dslashpos = strpos($ap['apiLink'], '//'); if ($dslashpos === false) { $nBegin = 0; } else { $nBegin = $dslashpos + 2; } $slashpos = strpos($ap['apiLink'], '/', $nBegin); $ap['server'] = substr($ap['apiLink'], 0, $slashpos); $ap['path'] = substr($ap['apiLink'], $slashpos); $apis[$ap['name']] = $ap; } $data = array( 'engineName' => (string)$root->service->engineName, 'engineLink' => (string)$root->service->engineLink, 'homePageLink' => (string)$root->service->homePageLink, 'apis' => $apis ); return $data; }//public static function discoverSettings($url) /* * Tries to return the best available driver for the given * settings array. The settings array is returned by * Services_Blogging::discoverSettings() * * @param array $arSettings Settings array * * @return string The driver to use, false if none found / public static function getBestAvailableDriver($arSettings) { if (isset($arSettings['apis'])) { $arSettings = $arSettings['apis']; } //find preferred one $driver = null; foreach ($arSettings as $id => $api) { if ($api['preferred'] === true) { if (self::driverExists($api['name'])) { return $api['name']; } unset($arSettings[$id]); } } foreach ($arSettings as $id => $api) { if (self::driverExists($api['name'])) { return $api['name']; } } return false; }//public static function getBestAvailableDriver($arSettings) /* * Tries to include the driver file and checks if * the driver class exists. * * @param string $driver Driver to check * * @return boolean If the driver exists */ protected static function driverExists($driver) { @include_once 'Services/Blogging/Driver/' . $driver . '.php'; return class_exists('Services_Blogging_Driver_' . $driver); }//protected static function driverExists($driver) }//class Services_Blogging ?>

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