<?php /** * StatusNet, the distributed open-source microblogging tool * * Base class for RSS 1.0 feed actions * * PHP version 5 * * LICENCE: This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * @category Mail * @package StatusNet * @author Evan Prodromou <evan@status.net> * @author Earle Martin <earle@downlode.org> * @copyright 2008-9 StatusNet, Inc. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 * @link http://status.net/ */ if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); } define('DEFAULT_RSS_LIMIT', 48); class Rss10Action extends Action { # This will contain the details of each feed item's author and be used to generate SIOC data. var $creators = array(); var $limit = DEFAULT_RSS_LIMIT; var $notices = null; var $tags_already_output = array(); /** * Constructor * * Just wraps the Action constructor. * * @param string $output URI to output to, default = stdout * @param boolean $indent Whether to indent output, default true * * @see Action::__construct */ function __construct($output='php://output', $indent=null) { parent::__construct($output, $indent); } /** * Do we need to write to the database? * * @return boolean true */ function isReadonly() { return true; } /** * Read arguments and initialize members * * @param array $args Arguments from $_REQUEST * @return boolean success */ function prepare($args) { parent::prepare($args); $this->limit = (int) $this->trimmed('limit'); if ($this->limit == 0) { $this->limit = DEFAULT_RSS_LIMIT; } if (common_config('site', 'private')) { if (!isset($_SERVER['PHP_AUTH_USER'])) { # This header makes basic auth go header('WWW-Authenticate: Basic realm="StatusNet RSS"'); # If the user hits cancel -- bam! $this->show_basic_auth_error(); return; } else { $nickname = $_SERVER['PHP_AUTH_USER']; $password = $_SERVER['PHP_AUTH_PW']; if (!common_check_user($nickname, $password)) { # basic authentication failed list($proxy, $ip) = common_client_ip(); common_log(LOG_WARNING, "Failed RSS auth attempt, nickname = $nickname, proxy = $proxy, ip = $ip."); $this->show_basic_auth_error(); return; } } } return true; } /** * Handle a request * * @param array $args Arguments from $_REQUEST * * @return void */ function handle($args) { // Parent handling, including cache check parent::handle($args); $this->showRss(); } function show_basic_auth_error() { header('HTTP/1.1 401 Unauthorized'); header('Content-Type: application/xml; charset=utf-8'); $this->startXML(); $this->elementStart('hash'); $this->element('error', null, 'Could not authenticate you.'); $this->element('request', null, $_SERVER['REQUEST_URI']); $this->elementEnd('hash'); $this->endXML(); } /** * Get the notices to output in this stream. * * @return array an array of Notice objects sorted in reverse chron */ function getNotices() { return array(); } /** * Get a description of the channel * * Returns an array with the following * @return array */ function getChannel() { return array('url' => '', 'title' => '', 'link' => '', 'description' => ''); } function getImage() { return null; } function showRss() { $this->initRss(); $this->showChannel(); $this->showImage(); if (count($this->notices)) { foreach ($this->notices as $n) { $this->showItem($n); } } $this->showCreators(); $this->endRss(); } function showChannel() { $channel = $this->getChannel(); $image = $this->getImage(); $this->elementStart('channel', array('rdf:about' => $channel['url'])); $this->element('title', null, $channel['title']); $this->element('link', null, $channel['link']); $this->element('description', null, $channel['description']); $this->element('cc:licence', array('rdf:resource' => common_config('license','url'))); if ($image) { $this->element('image', array('rdf:resource' => $image)); } $this->elementStart('items'); $this->elementStart('rdf:Seq'); if (count($this->notices)) { foreach ($this->notices as $notice) { $this->element('rdf:li', array('rdf:resource' => $notice->uri)); } } $this->elementEnd('rdf:Seq'); $this->elementEnd('items'); $this->elementEnd('channel'); } function showImage() { $image = $this->getImage(); if ($image) { $channel = $this->getChannel(); $this->elementStart('image', array('rdf:about' => $image)); $this->element('title', null, $channel['title']); $this->element('link', null, $channel['link']); $this->element('url', null, $image); $this->elementEnd('image'); } } function showItem($notice) { $profile = Profile::staticGet($notice->profile_id); $nurl = common_local_url('shownotice', array('notice' => $notice->id)); $creator_uri = common_profile_uri($profile); $this->elementStart('item', array('rdf:about' => $notice->uri, 'rdf:type' => 'http://rdfs.org/sioc/types#MicroblogPost')); $title = $profile->nickname . ': ' . common_xml_safe_str(trim($notice->content)); $this->element('title', null, $title); $this->element('link', null, $nurl); $this->element('description', null, $profile->nickname."'s status on ".common_exact_date($notice->created)); if ($notice->rendered) { $this->element('content:encoded', null, common_xml_safe_str($notice->rendered)); } $this->element('dc:date', null, common_date_w3dtf($notice->created)); $this->element('dc:creator', null, ($profile->fullname) ? $profile->fullname : $profile->nickname); $this->element('foaf:maker', array('rdf:resource' => $creator_uri)); $this->element('sioc:has_creator', array('rdf:resource' => $creator_uri.'#acct')); $location = $notice->getLocation(); if ($location && isset($location->lat) && isset($location->lon)) { $location_uri = $location->getRdfURL(); $attrs = array('geo:lat' => $location->lat, 'geo:long' => $location->lon); if (strlen($location_uri)) { $attrs['rdf:resource'] = $location_uri; } $this->element('statusnet:origin', $attrs); } $this->element('statusnet:postIcon', array('rdf:resource' => $profile->avatarUrl())); $this->element('cc:licence', array('rdf:resource' => common_config('license', 'url'))); if ($notice->reply_to) { $replyurl = common_local_url('shownotice', array('notice' => $notice->reply_to)); $this->element('sioc:reply_of', array('rdf:resource' => $replyurl)); } if (!empty($notice->conversation)) { $conversationurl = common_local_url('conversation', array('id' => $notice->conversation)); $this->element('sioc:has_discussion', array('rdf:resource' => $conversationurl)); } $attachments = $notice->attachments(); if($attachments){ foreach($attachments as $attachment){ $enclosure=$attachment->getEnclosure(); if ($enclosure) { $attribs = array('rdf:resource' => $enclosure->url); if ($enclosure->title) { $attribs['dc:title'] = $enclosure->title; } if ($enclosure->modified) { $attribs['dc:date'] = common_date_w3dtf($enclosure->modified); } if ($enclosure->size) { $attribs['enc:length'] = $enclosure->size; } if ($enclosure->mimetype) { $attribs['enc:type'] = $enclosure->mimetype; } $this->element('enc:enclosure', $attribs); } $this->element('sioc:links_to', array('rdf:resource'=>$attachment->url)); } } $tag = new Notice_tag(); $tag->notice_id = $notice->id; if ($tag->find()) { $entry['tags']=array(); while ($tag->fetch()) { $tagpage = common_local_url('tag', array('tag' => $tag->tag)); if ( in_array($tag, $this->tags_already_output) ) { $this->element('ctag:tagged', array('rdf:resource'=>$tagpage.'#concept')); continue; } $tagrss = common_local_url('tagrss', array('tag' => $tag->tag)); $this->elementStart('ctag:tagged'); $this->elementStart('ctag:Tag', array('rdf:about'=>$tagpage.'#concept', 'ctag:label'=>$tag->tag)); $this->element('foaf:page', array('rdf:resource'=>$tagpage)); $this->element('rdfs:seeAlso', array('rdf:resource'=>$tagrss)); $this->elementEnd('ctag:Tag'); $this->elementEnd('ctag:tagged'); $this->tags_already_output[] = $tag->tag; } } $this->elementEnd('item'); $this->creators[$creator_uri] = $profile; } function showCreators() { foreach ($this->creators as $uri => $profile) { $id = $profile->id; $nickname = $profile->nickname; $this->elementStart('foaf:Agent', array('rdf:about' => $uri)); $this->element('foaf:nick', null, $nickname); if ($profile->fullname) { $this->element('foaf:name', null, $profile->fullname); } $this->element('foaf:holdsAccount', array('rdf:resource' => $uri.'#acct')); $avatar = $profile->avatarUrl(); $this->element('foaf:depiction', array('rdf:resource' => $avatar)); $this->elementEnd('foaf:Agent'); } } function initRss() { $channel = $this->getChannel(); header('Content-Type: application/rdf+xml'); $this->startXml(); $this->elementStart('rdf:RDF', array('xmlns:rdf' => 'http://www.w3.org/1999/02/22-rdf-syntax-ns#', 'xmlns:dc' => 'http://purl.org/dc/elements/1.1/', 'xmlns:cc' => 'http://creativecommons.org/ns#', 'xmlns:content' => 'http://purl.org/rss/1.0/modules/content/', 'xmlns:ctag' => 'http://commontag.org/ns#', 'xmlns:foaf' => 'http://xmlns.com/foaf/0.1/', 'xmlns:enc' => 'http://purl.oclc.org/net/rss_2.0/enc#', 'xmlns:sioc' => 'http://rdfs.org/sioc/ns#', 'xmlns:sioct' => 'http://rdfs.org/sioc/types#', 'xmlns:rdfs' => 'http://www.w3.org/2000/01/rdf-schema#', 'xmlns:geo' => 'http://www.w3.org/2003/01/geo/wgs84_pos#', 'xmlns:statusnet' => 'http://status.net/ont/', 'xmlns' => 'http://purl.org/rss/1.0/')); $this->elementStart('sioc:Site', array('rdf:about' => common_root_url())); $this->element('sioc:name', null, common_config('site', 'name')); $this->elementStart('sioc:space_of'); $this->element('sioc:Container', array('rdf:about' => $channel['url'])); $this->elementEnd('sioc:space_of'); $this->elementEnd('sioc:Site'); } function endRss() { $this->elementEnd('rdf:RDF'); } /** * When was this page last modified? * */ function lastModified() { if (empty($this->notices)) { return null; } if (count($this->notices) == 0) { return null; } // FIXME: doesn't handle modified profiles, avatars, deleted notices return strtotime($this->notices[0]->created); } }