1fdb4710bSMark Prins<?php 289906951SMark Prins 3635a5e2dSMark Prins/* 4fdb4710bSMark Prins * Copyright (c) 2013 Mark C. Prins <mprins@users.sf.net> 5fdb4710bSMark Prins * 6fdb4710bSMark Prins * Permission to use, copy, modify, and distribute this software for any 7fdb4710bSMark Prins * purpose with or without fee is hereby granted, provided that the above 8fdb4710bSMark Prins * copyright notice and this permission notice appear in all copies. 9fdb4710bSMark Prins * 10fdb4710bSMark Prins * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11fdb4710bSMark Prins * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12fdb4710bSMark Prins * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13fdb4710bSMark Prins * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14fdb4710bSMark Prins * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15fdb4710bSMark Prins * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16fdb4710bSMark Prins * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17635a5e2dSMark Prins */ 18635a5e2dSMark Prins 19ae2f5c78SMark Prins 2089906951SMark Prinsif (!defined('DOKU_INC')) 2189906951SMark Prins die(); 2289906951SMark Prinsif (!defined('DOKU_PLUGIN')) 2389906951SMark Prins define('DOKU_PLUGIN', DOKU_INC . 'lib/plugins/'); 24fdb4710bSMark Prins 25fdb4710bSMark Prinsrequire_once DOKU_PLUGIN . 'action.php'; 26ae2f5c78SMark Prins/** 27ae2f5c78SMark Prins * DokuWiki Plugin socialcards (Action Component). 28ae2f5c78SMark Prins * 29ae2f5c78SMark Prins * @license BSD license 30ae2f5c78SMark Prins * @author Mark C. Prins <mprins@users.sf.net> 31ae2f5c78SMark Prins */ 32fdb4710bSMark Prinsclass action_plugin_socialcards extends DokuWiki_Action_Plugin { 33fdb4710bSMark Prins 34ae2f5c78SMark Prins /** 35ae2f5c78SMark Prins * Register our callback for the TPL_METAHEADER_OUTPUT event. 36ae2f5c78SMark Prins * 37ae2f5c78SMark Prins * @param $controller Doku_Event_Handler 38ae2f5c78SMark Prins * @see DokuWiki_Action_Plugin::register() 39ae2f5c78SMark Prins */ 40ae2f5c78SMark Prins public function register(Doku_Event_Handler $controller) { 4189906951SMark Prins $controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 4289906951SMark Prins 'handle_tpl_metaheader_output'); 43fdb4710bSMark Prins } 44fdb4710bSMark Prins 45fdb4710bSMark Prins /** 4689906951SMark Prins * Retrieve metadata and add to the head of the page using appropriate meta 47*156465eeSMark Prins * tags unless the page does not exist. 4889906951SMark Prins * 4989906951SMark Prins * @global string $ID page id 5089906951SMark Prins * @global array $conf global wiki configuration 5189906951SMark Prins * @global array $INFO 52fdb4710bSMark Prins * @param Doku_Event $event the DokuWiki event. $event->data is a two-dimensional 53fdb4710bSMark Prins * array of all meta headers. The keys are meta, link and script. 5489906951SMark Prins * @param unknown_type $param the parameters passed to register_hook when this 5589906951SMark Prins * handler was registered 5689906951SMark Prins * 5789906951SMark Prins * @see http://www.dokuwiki.org/devel:event:tpl_metaheader_output 58fdb4710bSMark Prins */ 59fdb4710bSMark Prins public function handle_tpl_metaheader_output(Doku_Event &$event, $param) { 6089906951SMark Prins global $ID, $conf, $INFO; 61fdb4710bSMark Prins 62*156465eeSMark Prins if (!page_exists($ID)) return; 63*156465eeSMark Prins 64fdb4710bSMark Prins // twitter card, see https://dev.twitter.com/docs/cards 6589906951SMark Prins $event->data['meta'][] = array('name' => 'twitter:card', 6689906951SMark Prins 'content' => "summary",); 6789906951SMark Prins $event->data['meta'][] = array('name' => 'twitter:url', 6889906951SMark Prins 'content' => wl($ID, '', true),); 6989906951SMark Prins $event->data['meta'][] = array('name' => 'twitter:title', 7089906951SMark Prins 'content' => p_get_metadata($ID, 'title', true),); 71aeb704feSMark Prins $desc = p_get_metadata($ID, 'description', true); 72aeb704feSMark Prins if (!empty($desc)) { 7389906951SMark Prins $desc = str_replace("\n", " ", $desc['abstract']); 74fc03d0b3SMark Prins $event->data['meta'][] = array('name' => 'twitter:description', 7589906951SMark Prins 'content' => $desc,); 76fc03d0b3SMark Prins } 7789906951SMark Prins $event->data['meta'][] = array('name' => 'twitter:site', 7889906951SMark Prins 'content' => $this->getConf('twitterName'),); 79fdb4710bSMark Prins //twitter:site:id 8089906951SMark Prins $event->data['meta'][] = array('name' => 'twitter:creator', 8189906951SMark Prins 'content' => $this->getConf('twitterName'),); 82fdb4710bSMark Prins //twitter:creator:id 8389906951SMark Prins $event->data['meta'][] = array('name' => 'twitter:image', 8489906951SMark Prins 'content' => $this->getImage(),); 8589906951SMark Prins 8689906951SMark Prins // opengraph, see http://ogp.me/ 8789906951SMark Prins // 8889906951SMark Prins // to make this work properly the template should be modified adding the 8989906951SMark Prins // namespaces for a (x)html 4 template make html tag: 9089906951SMark Prins // 9189906951SMark Prins // <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="nl" lang="nl" 9289906951SMark Prins // xmlns:og="http://ogp.me/ns#" xmlns:fb="http://ogp.me/ns/fb#" 9389906951SMark Prins // xmlns:article="http://ogp.me/ns/article#" xmlns:place="http://ogp.me/ns/place#"> 9489906951SMark Prins // 9589906951SMark Prins // and for a (x)html 5 template make head tag: 9689906951SMark Prins // 9789906951SMark Prins // <head prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb# article: http://ogp.me/ns/article# place: http://ogp.me/ns/place#"> 9889906951SMark Prins 9989906951SMark Prins // og namespace http://ogp.me/ns# 10089906951SMark Prins $event->data['meta'][] = array('property' => 'og:locale', 10189906951SMark Prins 'content' => $this->getConf('languageTerritory'),); 10289906951SMark Prins $event->data['meta'][] = array('property' => 'og:site_name', 10389906951SMark Prins 'content' => $conf['title'],); 10489906951SMark Prins $event->data['meta'][] = array('property' => 'og:url', 10589906951SMark Prins 'content' => wl($ID, '', true),); 10689906951SMark Prins $event->data['meta'][] = array('property' => 'og:title', 10789906951SMark Prins 'content' => p_get_metadata($ID, 'title', true),); 10889906951SMark Prins if (!empty($desc)) { 10989906951SMark Prins $event->data['meta'][] = array('property' => 'og:description', 11089906951SMark Prins 'content' => $desc,); 111fdb4710bSMark Prins } 11289906951SMark Prins $event->data['meta'][] = array('property' => 'og:type', 11389906951SMark Prins 'content' => "article",); 11489906951SMark Prins $event->data['meta'][] = array('property' => 'og:image', 11589906951SMark Prins 'content' => $this->getImage(),); 11689906951SMark Prins 11789906951SMark Prins // article namespace http://ogp.me/ns/article# 11889906951SMark Prins $_dates = p_get_metadata($ID, 'date', true); 11989906951SMark Prins $event->data['meta'][] = array('property' => 'article:published_time', 12089906951SMark Prins 'content' => dformat($_dates['created']),); 12189906951SMark Prins $event->data['meta'][] = array('property' => 'article:modified_time', 12289906951SMark Prins 'content' => dformat($_dates['modified']),); 12389906951SMark Prins $event->data['meta'][] = array('property' => 'article:author', 12489906951SMark Prins 'content' => $INFO['editor'],); 12589906951SMark Prins // $event->data['meta'][] = array('property' => 'article:author','content' => p_get_metadata($ID,'creator',true),); 12689906951SMark Prins // $event->data['meta'][] = array('property' => 'article:author','content' => p_get_metadata($ID,'user',true),); 12789906951SMark Prins $_subject = p_get_metadata($ID, 'subject', true); 12889906951SMark Prins if (!empty($_subject)) { 12989906951SMark Prins if (!is_array($_subject)) { 13089906951SMark Prins $_subject = array($_subject); 13189906951SMark Prins } 13289906951SMark Prins foreach ($_subject as $tag) { 13389906951SMark Prins $event->data['meta'][] = array('property' => 'article:tag', 13489906951SMark Prins 'content' => $tag,); 13589906951SMark Prins } 13689906951SMark Prins } 13789906951SMark Prins 13889906951SMark Prins // place namespace http://ogp.me/ns/place# 13989906951SMark Prins $geotags = p_get_metadata($ID, 'geo', true); 14089906951SMark Prins $lat = $geotags['lat']; 14189906951SMark Prins $lon = $geotags['lon']; 14289906951SMark Prins if (!(empty($lat) && empty($lon))) { 14389906951SMark Prins $event->data['meta'][] = array('property' => 'place:location:latitude', 14489906951SMark Prins 'content' => $lat,); 14589906951SMark Prins $event->data['meta'][] = array('property' => 'place:location:longitude', 14689906951SMark Prins 'content' => $lon,); 147ae2f5c78SMark Prins // place:location:altitude (string) Altitude of location, facebook wants feet... 14889906951SMark Prins } 14989906951SMark Prins 150ae2f5c78SMark Prins /* these are not valid for the GeoPoint type.. 151ae2f5c78SMark Prins 15289906951SMark Prins $region=$geotags['region']; 15389906951SMark Prins $country=$geotags['country']; 15489906951SMark Prins $placename=$geotags['placename']; 15589906951SMark Prins if (!empty($region)) {$event->data['meta'][] = array('property' => 'place:location:region', 'content' => $region,);} 15689906951SMark Prins if (!empty($placename)) {$event->data['meta'][] = array('property' => 'place:location:locality', 'content' => $placename,);} 15789906951SMark Prins if (!empty($country)) {$event->data['meta'][] = array('property' => 'place:location:country-name','content' => $country,);} 15889906951SMark Prins */ 15989906951SMark Prins 16089906951SMark Prins // optional facebook app ID 16189906951SMark Prins $appId = $this->getConf('fbAppId'); 16289906951SMark Prins if (!empty($appId)) { 16389906951SMark Prins $event->data['meta'][] = array('property' => 'fb:app_id', 16489906951SMark Prins 'content' => $appId,); 16589906951SMark Prins } 16689906951SMark Prins } 16789906951SMark Prins 16889906951SMark Prins /** 16989906951SMark Prins * Gets the canonical image path for this page. 17089906951SMark Prins * 17189906951SMark Prins * @global string $ID page id 17289906951SMark Prins * @return string the url to the image to use for this page 17389906951SMark Prins */ 17489906951SMark Prins private function getImage() { 17589906951SMark Prins global $ID; 17689906951SMark Prins $rel = p_get_metadata($ID, 'relation', true); 17789906951SMark Prins $img = $rel['firstimage']; 178ae2f5c78SMark Prins 179ae2f5c78SMark Prins if (empty($img)) { 18093bf3c56SMark Prins $img = $this->getConf('fallbackImage'); 18193bf3c56SMark Prins if (substr($img, 0, 4 ) === "http") { 182ae2f5c78SMark Prins // don't use ml() as this results in a HTTP redirect after hitting the wiki 18393bf3c56SMark Prins return $img; 18493bf3c56SMark Prins } 18593bf3c56SMark Prins } 186ae2f5c78SMark Prins 187ae2f5c78SMark Prins return ml($img, array(), true, '&', true); 18889906951SMark Prins } 18989906951SMark Prins 190fdb4710bSMark Prins} 191