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WikiEmbed.php
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WikiEmbed.php
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<?php
/**
* Plugin Name: Wiki Embed
* Plugin URI: http://wordpress.org/extend/plugins/wiki-embed/
* Description: Enables the inclusion of mediawiki pages into your own blog page or post through the use of shortcodes.
* Version: 1.4.9
* Author: Enej Bajgoric, Devindra Payment, CTLT, UBC
* Author URI: http://cms.ubc.ca
*
*
* This program is free software; you can redistribute it and/or modify it under the terms of the GNU
* General Public License as published by the Free Software Foundation; either version 2 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.
*
* You should have received a copy of the GNU General Public License along with this program; if not, write
* to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
* General Public License as published by the Free Software Foundation; either version 2 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.
*
* You should have received a copy of the GNU General Public License along with this program; if not, write
* to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* /--------------------------------------------------------------------\
* | |
* | License: GPL |
* | |
* | WikiEmbed - embed multiple mediawiki page into your post or page |
* | Copyright (C) 2008, OLT, www.olt.ubc.com |
* | All rights reserved. |
* | |
* | This program is free software; you can redistribute it and/or |
* | modify it under the terms of the GNU General Public License |
* | as published by the Free Software Foundation; either version 2 |
* | 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 General Public License for more details. |
* | |
* | You should have received a copy of the GNU General Public License |
* | along with this program; if not, write to the |
* | Free Software Foundation, Inc. |
* | 51 Franklin Street, Fifth Floor |
* | Boston, MA 02110-1301, USA |
* | |
* \--------------------------------------------------------------------/
*/
define( 'WIKI_EMBED_VERSION' , 0.9 );
define( 'WIKI_EMBED_ROOT' , dirname(__FILE__) );
define( 'WIKI_EMBED_FILE_PATH' , WIKI_EMBED_ROOT . '/' . basename(__FILE__) );
define( 'WIKI_EMBED_URL' , plugins_url( '/', __FILE__ ) );
Class Wiki_Embed {
static $instance;
public $options; // GLOBAL Options
public $version;
public $content_count; // wiki content count needed by the shortcode
public $wikiembeds;
public $pre_load_scripts;
public $load_scripts;
public $tabs_support;
public $accordion_support;
/**
* __construct function.
*
* @access public
* @return void
*/
function __construct() {
self::$instance = $this;
add_action( 'init', array( $this, 'init' ) );
// set the default wiki embed value if the once from the Options are not set
$this->options = shortcode_atts( $this->default_settings(), get_option( 'wikiembed_options' ) );
$this->wikiembeds = get_option( 'wikiembeds' ); // we might not need to load this here at all...
$this->content_count = 0;
$this->version = WIKI_EMBED_VERSION;
// display a page when you are clicked from a wiki page
add_action( 'template_redirect', array( $this, 'load_page' ) );
add_filter( 'posts_join', array( $this, 'search_metadata_join' ) );
add_filter( 'posts_where', array( $this, 'search_metadata_where' ) );
add_filter( 'sf_posts_query', array( $this, 'search_metadata_ajaxy' ) );
}
/**
* register_scripts function.
*
* @access public
* @return void
*/
function register_scripts() {
wp_register_script( 'wiki-embed-tabs', plugins_url( '/wiki-embed/resources/js/tabs.js' ), array( "jquery", "jquery-ui-tabs" ), $this->version, true );
wp_register_script( 'wiki-embed-accordion', plugins_url( '/wiki-embed/resources/js/accordion.js' ), array( "jquery", "jquery-ui-accordion" ), $this->version, true );
wp_register_script( 'wiki-embed-tabs-accordion-anchors', plugins_url( '/wiki-embed/resources/js/anchor-links.js' ), array( 'jquery' ), $this->version, true );
$this->tabs_support = get_theme_support('tabs');
$this->accordion_support = get_theme_support( 'accordions' );
if ( ! is_array( $this->tabs_support ) ) {
$this->tabs_support = array();
}
if ( ! is_array( $this->accordion_support ) ) {
$this->accordion_support = array();
}
if ( ( isset( $this->tabs_support[0] ) && $this->tabs_support[0] === 'twitter-bootstrap' ) || ( isset( $this->accordion_support[0] ) && $this->accordion_support[0] === 'twitter-bootstrap' ) ) {
require_once( WIKI_EMBED_ROOT.'/support/twitter-bootstrap/action.php' );
}
if ( isset( $this->tabs_support[0] ) && $this->tabs_support[0] === 'twitter-bootstrap' ) {
wp_register_script( 'twitter-tab-shortcode' , plugins_url('support/twitter-bootstrap/twitter.bootstrap.tabs.js', __FILE__), array( 'jquery' ), '1.0', true );
}
// ADD styling
$this->options['tabs-style'] = ( empty( $this->tabs_support ) ? $this->options['tabs-style'] : 0 );
$this->options['accordion-style'] = ( empty( $this->accordion_support ) ? $this->options['accordion-style'] : 0 );
// embed this if tabs enabled style
if ( $this->options['tabs-style'] ) {
// wp_enqueue_style( 'wiki-embed-tabs', plugins_url( '/wiki-embed/resources/css/tabs.css' ), false, $this->version );
}
if ( $this->options['accordion-style'] ) {
// wp_enqueue_style( 'wiki-embed-accordion', plugins_url( '/wiki-embed/resources/css/accordion.css' ), false, $this->version );
}
// add some great wiki styling
if ( $this->options['style'] ) {
// wp_enqueue_style( 'wiki-embed-style', plugins_url( '/wiki-embed/resources/css/wiki-embed.css' ), false, $this->version, 'screen' );
}
switch ( $this->options['wiki-links'] ) {
case "overlay":
// embed this if tabs enabled
wp_register_script( 'colorbox', plugins_url( '/wiki-embed/resources/js/jquery.colorbox.min.js'),array("jquery"), "1.3.20.2", true );
wp_register_script( 'wiki-embed-overlay', plugins_url( '/wiki-embed/resources/js/overlay.js'),array( "colorbox", "jquery" ), $this->version, true );
wp_localize_script( 'wiki-embed-overlay', 'WikiEmbedSettings', array( 'ajaxurl' => admin_url('admin-ajax.php') ) );
// wp_enqueue_style( 'wiki-embed-overlay', plugins_url( '/wiki-embed/resources/css/colorbox.css'),false, $this->version, 'screen');
$this->pre_load_scripts[] = 'wiki-embed-overlay';
break;
case "new-page":
wp_register_script( 'wiki-embed-new-page', plugins_url( '/wiki-embed/resources/js/new-page.js' ), array( "jquery" ), $this->version, true );
$this->pre_load_scripts[] = 'wiki-embed-new-page';
wp_localize_script( 'wiki-embed-new-page', 'WikiEmbedSettings',
array( 'siteurl' => get_site_url(), 'ajaxurl' => admin_url('admin-ajax.php'), 'nonce' => wp_create_nonce("wiki_embed_ajax") )
);
if ( current_user_can( 'publish_pages' ) || current_user_can('unfiltered_html') ) {
wp_register_script( 'wiki-embed-site-admin', plugins_url( '/wiki-embed/resources/js/site-admin.js'),array( "jquery", 'wiki-embed-new-page' ), $this->version, true );
$this->pre_load_scripts[] = 'wiki-embed-site-admin';
}
break;
default:
}
}
/**
* print_scripts function.
*
* @access public
* @return void
*/
function print_scripts() {
if ( ! is_array( $this->load_scripts ) ) {
return;
}
foreach ( $this->load_scripts as $script ) {
wp_print_scripts( $script );
}
}
/**
* init function.
*
* @access public
* @return void
*/
function init() {
// load the necessery scripts for the site
// add_action('init','wikiembed_init');
if ( ! is_admin() ) {
$this->register_scripts();
add_filter( 'page_link', array( $this, 'page_link' ) );
} else {
require( WIKI_EMBED_ROOT.'/admin/admin-overlay.php' );
require( WIKI_EMBED_ROOT.'/admin/admin.php' );
}
// wiki embed shortcode
add_shortcode( 'wiki-embed', array( $this, 'shortcode' ) );
add_action( 'wp_footer', array( $this, 'print_scripts' ) );
// ajax stuff needed for the overlay
if ( defined( 'DOING_AJAX' ) ) {
if ( is_user_logged_in() ) {
add_action( 'wp_ajax_wiki_embed', array( $this, 'overlay_ajax' ) );
} else {
add_action( 'wp_ajax_nopriv_wiki_embed', array( $this, 'overlay_ajax' ) );
}
}
}
/**
* settings function.
* default settings
* @access public
* @return void
*/
function default_settings() {
return array(
'tabs' => 1,
'accordions' => 1,
'style' => 1,
'tabs-style' => 0,
'accordion-style' => 0,
'wiki-update' => "30",
'wiki-links' => "default",
'wiki-links-new-page-email' => "",
'default' => array(
'source' => 1,
'pre-source' => "source: ",
'no-contents' => 1,
'no-edit' => 1,
'no-infobox' => 0,
'tabs' => 1,
),
'security' => array(
'whitelist' => null,
),
);
}
/**
* shortcode function.
*
* @access public
* @return void
*/
function shortcode( $atts ) {
global $post;
$this->content_count++;
// url is the unique identifier
$atts = apply_filters( 'wikiembed_override_atts', $atts );
// ADD styling
$this->options['tabs-style'] = ( empty( $this->tabs_support ) ? $this->options['tabs-style'] : 0 );
$this->options['accordion-style'] = ( empty( $this->accordion_support ) ? $this->options['accordion-style'] : 0 );
// embed this if tabs enabled style
if ( $this->options['tabs-style'] ) {
wp_enqueue_style( 'wiki-embed-tabs', plugins_url( '/wiki-embed/resources/css/tabs.css' ), false, $this->version );
}
if ( $this->options['accordion-style'] ) {
wp_enqueue_style( 'wiki-embed-accordion', plugins_url( '/wiki-embed/resources/css/accordion.css' ), false, $this->version );
}
// add some great wiki styling
if ( $this->options['style'] ) {
wp_enqueue_style( 'wiki-embed-style', plugins_url( '/wiki-embed/resources/css/wiki-embed.css' ), false, $this->version, 'screen' );
}
switch ( $this->options['wiki-links'] ) {
case "overlay":
wp_enqueue_style( 'wiki-embed-overlay', plugins_url( '/wiki-embed/resources/css/colorbox.css'),false, $this->version, 'screen');
break;
default:
}
extract( shortcode_atts( array(
'url' => NULL,
'update' => NULL, // 30 minutes
'remove' => NULL,
'get' => NULL,
'default_get' => NULL,
'has_source' => NULL,
), $atts ) );
if( 0 === strpos ( $url , site_url() ) )
return "Sorry can't wiki embed content from your own site";
if ( ! $url && current_user_can( 'manage_options' ) ) { // checks to see if url is defined
ob_start();
?>
<hr />
<div class="wiki-embed-warning">
<div style="color: darkred;">
You need to specify a url for your Wiki-Embed Shortcode
</div>
<small>
This message is only displayed to administrators.
<br />
Please <a href=" <?php echo get_edit_post_link( $post->ID ); ?> ">edit this page</a>, and remove the [wiki-embed] shortcode, or specify a url parameter.
</small>
</div>
<hr />
<?php
return ob_get_clean();
}
$url = $this->get_page_url( $url ); // escape the url
// other possible attributes
$has_no_edit = in_array( "no-edit", $atts );
$has_no_contents = in_array( "no-contents", $atts );
$has_no_infobox = in_array( "no-infobox", $atts );
$has_tabs = in_array( "tabs", $atts );
$has_accordion = in_array( "accordion", $atts );
if ( ! isset( $has_source ) ) { // this can be overwritten on per page basis
$has_source = $this->options['default']['source'];
}
if ( ! is_numeric( $update ) || $update < 5 ) {
$update = $this->options['wiki-update']; // this can be overwritten on per page basis
}
$this->load_scripts( $has_tabs, $has_accordion );
/**
* code here lets you add the get and default_get parameter to your wiki-emebed
*/
if ( $get ) {
$gets = explode( ",", $get );
$default_gets = explode( ",", $default_get );
$count_get = 0;
foreach ( $gets as $get_parameter ) {
$gets_replace[] = ( isset( $_GET[trim( $get_parameter )] ) && esc_html( $_GET[trim( $get_parameter )] ) != "" ? esc_html( $_GET[trim( $get_parameter )] ) : $default_gets[$count_get] );
$gets_search[] = "%".trim( $get_parameter )."%";
$count_get++;
}
$url = str_replace( $gets_search, $gets_replace, $url );
}
$wiki_page_id = $this->get_page_id( $url, $has_accordion, $has_tabs, $has_no_contents, $has_no_edit, $has_no_infobox, $remove );
// check to see if we need a refresh or was forced
if ( current_user_can( 'publish_pages' ) && isset( $_GET['refresh'] ) && wp_verify_nonce( $_GET['refresh'], $wiki_page_id ) ) {
// we store stuff
foreach ( $this->wikiembeds as $wikiembeds_id => $wikiembeds_item ) {
$bits = explode( ",", $wikiembeds_id );
if ( esc_attr( $bits[0] ) == esc_attr( $url ) ) {
// Rather than deleting the data, set it to expire a long time ago so if the refresh fails it can be ignored.
$this->wikiembeds[$wikiembeds_id]['expires_on'] = 1;
update_option( 'wikiembeds', $this->wikiembeds );
}
}
unset( $wikiembeds_id );
}
// this function retuns the wiki content the way it is suppoed to come
$content = $this->get_wiki_content( $url, $has_accordion, $has_tabs, $has_no_contents, $has_no_edit, $has_no_infobox, $update, $has_source, $remove );
$this->update_wikiembed_postmeta( $post->ID, $url, $content );
// if the user is admin
if ( current_user_can( 'publish_pages' ) ) {
if ( time() > $this->wikiembeds[$wiki_page_id]["expires_on"] ) {
$admin = "<div class='wiki-admin' style='position:relative; border:1px solid #CCC; margin-top:20px;padding:10px;'> <span style='background:#EEE; padding:0 5px; position:absolute; top:-1em; left:10px;'>Only visible to admins</span> Wiki content is expired and will be refreshed as soon as the source page can be reached. <a href='?refresh=".wp_create_nonce($wiki_page_id)."'>Retry now</a> | <a href='".admin_url('admin.php')."?page=wiki-embed&url=".urlencode($url)."'>in Wiki Embed List</a>";
} else {
$admin = "<div class='wiki-admin' style='position:relative; border:1px solid #CCC; margin-top:20px;padding:10px;'> <span style='background:#EEE; padding:0 5px; position:absolute; top:-1em; left:10px;'>Only visible to admins</span> Wiki content expires in: ".human_time_diff( date('U', $this->wikiembeds[$wiki_page_id]["expires_on"] ) ). " <a href='".esc_url('?refresh='.wp_create_nonce($wiki_page_id))."'>Refresh Wiki Content</a> | <a href='".admin_url('admin.php')."?page=wiki-embed&url=".urlencode($url)."'>in Wiki Embed List</a>";
}
if ( $this->options['wiki-links'] == "new-page" ) {
if ( ! isset( $this->wikiembeds[$url]['url'] ) ) {
$admin .= " <br /> <a href='' alt='".urlencode( $url )."' title='Set this {$post->post_type} as Target URL' class='wiki-embed-set-target-url' rel='".get_permalink( $post->ID )."'>Set this {$post->post_type} as Target URL</a>";
} else {
$admin .= " <br /> <span>Target URL set: ".esc_url( $this->wikiembeds[$url]['url'] )."</span>";
}
}
$admin .= "</div>";
return $content.$admin;
}
return $content;
}
/**
* load_page function.
*
* @access public
* @return void
*/
function load_page() {
if ( ! isset( $_GET['wikiembed-url'] ) && ! isset( $_GET['wikiembed-title'] ) ) {
return true; // do nothing
}
if ( ! current_user_can( 'publish_pages' ) ) {
return;
}
// call global variables
global $wp_query;
// do we need to redirect the page ?
$wiki_page_url = esc_url( $_GET['wikiembed-url'] );
// we could try to load it
if ( isset( $this->wikiembeds[$wiki_page_url]['url'] ) ):
wp_redirect( esc_url( $this->wikiembeds[$wiki_page_url]['url'] ) );
die();
endif;
$tabs = ( $this->options['default']['tabs'] == 1 ? true : false);
$accordion = ( $this->options['default']['tabs'] == 2 ? true : false);
$wiki_page_id = $this->get_page_id( $wiki_page_url, $accordion, $tabs, $this->options['default']['no-contents'], $this->options['default']['no-edit'], $this->options['default']['no-infobox'] );
// make sure to load scripts
$this->load_scripts( $has_tabs, $has_accordion );
/* Generate the shortcode ? */
$wiki_embed_shortcode = $this->get_page_shortcode( $wiki_page_url, $accordion, $tabs, $this->options['default']['no-contents'], $this->options['default']['no-edit'], $this->options['default']['no-infobox'] );
// no we have no where to redirect the page to just stay here
if ( ! isset( $has_source ) ) {
$has_source = $this->options['default']['source'];
}
if ( ! isset( $remove ) ) {
$remove = ""; // nothing to remove
}
$url = $this->get_page_url( $_GET['wikiembed-url'] );
$title = $this->get_page_title( $_GET['wikiembed-title'] );
$content = $this->get_wiki_content(
$url,
$accordion,
$tabs,
$this->options['default']['no-contents'],
$this->options['default']['no-edit'],
$this->options['default']['no-infobox'],
$this->options['wiki-links'],
$this->options['default']['source'],
$remove
);
if ( current_user_can( 'publish_pages' ) ) {
$content.= '<div class="wiki-admin" style="position:relative; border:1px solid #CCC; margin-top:20px;padding:10px;"> <span style="background:#EEE; padding:0 5px; position:absolute; top:-1em; left:10px;">Only visible to admins</span> <a href="'.admin_url('admin.php').'?page=wiki-embed&url='.urlencode($url).'">in Wiki Embed List</a> | <a href="'.admin_url('post-new.php?post_type=page&content=').urlencode($wiki_embed_shortcode).'&post_title='.esc_attr($title).'">Create a New Page</a></div>';
}
$admin_email = get_bloginfo( 'admin_email' );
$user = get_user_by( 'email', $admin_email );
$wp_query->is_home = false;
$wp_query->is_page = true;
$wp_query->post_count = 1;
$post = (object) null;
$post->ID = 0; // wiki-embed is set to 0
$post->post_title = $title;
$post->guid = get_site_url()."?wikiembed-url=".urlencode($url)."&wikiembed-title=".urlencode( $title );
$post->post_content = $content;
$post->post_status = "published";
$post->comment_status = "closed";
$post->post_modified = date( 'Y-m-d H:i:s' );
$post->post_excerpt = "excerpt nothing goes here";
$post->post_parent = 0;
$post->post_type = "page";
$post->post_date = date( 'Y-m-d H:i:s' );
$post->post_author = $user->ID; // newly created posts are set as if they are created by the admin user
$wp_query->posts = array( $post );
$wp_query->queried_object = $post; // this helps remove some errors
$flat_url = str_replace( ".", "_", $url);
// email the telling the admin to do something about the newly visited link.
if ( is_email( $this->options['wiki-links-new-page-email'] ) && ! isset( $_COOKIE["wiki_embed_urls_emailed:".$flat_url] ) && ! current_user_can( 'publish_pages' ) ) {
$current_url = get_site_url()."?wikiembed-url=".urlencode($url)."&wikiembed-title=".urlencode($title);
$settings_url = get_site_url()."/wp-admin/admin.php?page=wikiembed_settings_page";
$list_url = get_site_url()."/wp-admin/admin.php?page=wiki-embed";
$new_page = get_site_url()."/wp-admin/post-new.php?post_type=page&post_title=".$title."&content=".$wiki_embed_shortcode;
$list_url_item = get_site_url()."/wp-admin/admin.php?page=wiki-embed&url={$url}";
$subject = "Wiki Embed Action Required!";
$message = "
A User stumbled apon a page that is currently not a part of the site.
This is the url that they visited - {$current_url}
You have a few options:
Fix the problem by:
Creating a new page - and adding the shortcode
Go to {$new_page}
Here is the shorcode that you might find useful:
{$wiki_embed_shortcode}
Then go to the Wiki-Embed list and add a Target URL to point to the site
{$list_url_item}
and place the link that is suppoed to take you to the page that you just created.
Or you should:
Do Nothing - remove your email from the wiki embed settings page - {$settings_url}
";
$sent = wp_mail( $this->options['wiki-links-new-page-email'], $subject, $message );
// set the cookie do we don't send the email again
$expire = time() + 60*60*24*30;
$set_the_cookie = setcookie( "wiki_embed_urls_emailed:".$flat_url, "set", $expire );
}
}
/**
* load_scripts function.
*
* @access public
* @param mixed $has_tabs
* @param mixed $has_accordion
* @return void
*/
function load_scripts( $has_tabs, $has_accordion ) {
if ( ! empty( $this->pre_load_scripts ) ) {
$this->load_scripts = $this->pre_load_scripts;
}
//this script is added so that links on the page still work for accordion and tabs
if ($has_tabs || $has_accordion) {
$this->load_scripts[] = 'wiki-embed-tabs-accordion-anchors';
}
if ( is_array( $this->tabs_support ) && array_key_exists( 0, $this->tabs_support ) ) {
switch( $this->tabs_support[0] ) {
case 'twitter-bootstrap';
$this->load_scripts[] = 'twitter-tab-shortcode';
break;
// add support for something else here
default:
$this->load_scripts[] = 'wiki-embed-tabs';
break;
}
} elseif ( $has_tabs ) {
$this->load_scripts[] = 'wiki-embed-tabs';
}
if ( is_array( $this->accordion_support ) && array_key_exists( 0, $this->accordion_support ) ) {
switch( $this->accordion_support[0] ) {
case 'twitter-bootstrap';
// Do Nothing
break;
// add support for something else here
default:
$this->load_scripts[] = 'wiki-embed-accordion';
break;
}
} elseif ( $has_accordion ) {
$this->load_scripts[] = 'wiki-embed-accordion';
}
}
/**
* get_page_id function.
*
* @access public
* @param mixed $url
* @param mixed $has_accordion
* @param mixed $has_tabs
* @param mixed $has_no_contents
* @param mixed $has_no_edit
* @param mixed $has_no_infobox
* @param bool $remove (default: false)
* @return string $page_id;
*/
function get_page_id( $url, $has_accordion, $has_tabs, $has_no_contents, $has_no_edit, $has_no_infobox, $remove = false ) {
$wiki_page_id = esc_url( $url ).",";
if ( $has_tabs ) {
$wiki_page_id .= "tabs,";
}
if ( $has_accordion ) {
$wiki_page_id .= "accordion,";
}
if ( $has_no_contents ) {
$wiki_page_id .= "no-contents,";
}
if ( $has_no_edit ) {
$wiki_page_id .= "no-edit,";
}
if ( $has_no_infobox ) {
$wiki_page_id .= "no-infobox,";
}
if ( $remove ) {
$wiki_page_id .= $remove.",";
}
$wiki_page_id = substr( $wiki_page_id, 0, -1 );
return $wiki_page_id;
}
/**
* get_page_shortcode function.
*
* @access public
* @param mixed $url
* @param mixed $has_accordion
* @param mixed $has_tabs
* @param mixed $has_no_contents
* @param mixed $has_no_edit
* @param mixed $has_no_infobox
* @return string $wiki_embed_shortcode
*/
function get_page_shortcode( $url, $has_accordion, $has_tabs, $has_no_contents, $has_no_edit, $has_no_infobox ) {
$atts = "";
$atts .= " url=" . $url;
if ( $has_tabs ) $atts .= " tabs";
if ( $has_accordion ) $atts .= " accordion";
if ( $has_no_contents ) $atts .= " no-contents";
if ( $has_no_edit ) $atts .= " no-edit";
if ( $has_no_infobox ) $atts .= " no-infobox";
return "[wiki-embed".$atts."]";
}
/**
* get_page_url function.
*
* @access public
* @param mixed $get_url
* @return void
*/
function get_page_url( $get_url ) {
// Remove unwanted parts
$url = $this->remove_action_render( $get_url );
$url = str_replace( "&","&", $url );
$url = str_replace( "&","&", $url );
$url_array = explode( "#", $url );
return $url_array[0];
}
/* TODO: his function is identical to the one above it. Remove one of them. */
function esc_url( $url ) {
// remove unwanted parts
$url = $this->remove_action_render( $url );
$url = str_replace( "&", "&", $url );
$url = str_replace( "&", "&", $url );
$url_array = explode( "#", $url );
return $url_array[0];
}
/**
* remove_action_render function.
* removed any add action from the end of the url
* @access public
* @param mixed $url
* @return void
*/
function remove_action_render( $url ) {
if ( substr( $url, -14 ) == "?action=render" ) {
return substr( $url, 0, -14 );
} else {
return $url;
}
}
/**
* get_page_title function.
*
* @access public
* @param mixed $title
* @return void
*/
function get_page_title( $title ) {
$title = esc_html( $title );
// explode url - so that the title doesn't hash marks contain into
$title_array = explode( '#', $title );
$title = ( isset( $title_array[1] ) ? $title_array[0] : $title );
return $title ;
}
/**
* get_wiki_content function.
*
* @access public
* @param mixed $url
* @param mixed $has_tabs
* @param mixed $has_no_contents
* @param mixed $has_no_edit
* @param mixed $update
* @param bool $has_source. (default: false)
* @param mixed $remove. (default: null)
* @return void
*/
function get_wiki_content( $url, $has_accordion, $has_tabs, $has_no_contents, $has_no_edit, $has_no_infobox, $update, $has_source, $remove = null ) {
if ( ! $this->pass_url_check( $url ) ) {
return "This url does not meet the site security guidelines.";
}
$wiki_page_id = $this->get_page_id( $url, $has_accordion, $has_tabs, $has_no_contents, $has_no_edit, $has_no_infobox, $remove );
// get the cached version
$wiki_page_body = $this->get_cache( $wiki_page_id );
if ( $wiki_page_body && $this->wikiembeds[$wiki_page_id]['expires_on'] < time() && ! ( isset( $_GET['refresh'] ) && wp_verify_nonce( $_GET['refresh'], $wiki_page_id ) ) ) {
//If the cache exists but is expired (and an immediate refresh has not been forced:
// Refresh it at the end!
register_shutdown_function( array( $this, 'refresh_after_load'), $url, $has_accordion, $has_tabs, $has_no_contents, $has_no_edit, $has_no_infobox, $update, $has_source, $remove );
} elseif ( $wiki_page_body && $this->wikiembeds[$wiki_page_id]['expires_on'] >= time() ) {
//If cache exists and is fresh
// we don't do anything
//then we don't really need to do anything special here!
} elseif ( ! $wiki_page_body || ( current_user_can( 'publish_pages' ) && isset( $_GET['refresh'] ) && wp_verify_nonce( $_GET['refresh'], $wiki_page_id ) ) ) {
//Get page from remote site
$wiki_page_body = $this->remote_request_wikipage( $url, $update );
if ( $wiki_page_body ) { // Successfully grabbed remote contnet
//render page content
$wiki_page_body = $this->render( $wiki_page_id, $wiki_page_body, $has_no_edit, $has_no_contents , $has_no_infobox, $has_accordion, $has_tabs, $remove );
$worked = $this->update_cache( $wiki_page_id, $wiki_page_body, $update );
} else { //Failed, (and there's no cache available) so show an error
$update = 0; //Set the expiry offset to 0 (now) to try again next time the page is loaded
return '<span class="alert">
We were not able to Retrieve the content of this page, at this time.<br />
You can: <br />
1. Try refreshing the page. Press Ctrl + R (windows) or ⌘ Cmd + R (mac)<br />
2. Go to the <a href="'.esc_url($url).'" >source</a><br />
</span>';
}
}
// display the source
$wiki_embed_end = '';
if ( $has_source ) {
$source_text = ( isset( $this->options['default']['pre-source'] ) ? $this->options['default']['pre-source'] : "source:" );
$wiki_embed_end .= '<span class="wiki-embed-source">'.$source_text.' <a href="'.esc_url( urldecode($url)) .'">'.urldecode($url).'</a></span>';
}
// add special wiki embed classed depending on what should be happening
$wiki_embed_class = '';
switch ( $this->options['wiki-links'] ) {
case "overlay":
$wiki_embed_class .= " wiki-embed-overlay ";
break;
case "new-page":
$wiki_embed_class .= " wiki-embed-new-page ";
break;
}
$wiki_target_url = ' wiki-target-url-not-set';
if ( isset( $this->wikiembeds[$wiki_page_id]['url'] ) && $this->wikiembeds[$wiki_page_id]['url'] ) {
$wiki_target_url = " wiki-target-url-set";
}
$wiki_embed_class .= $wiki_target_url;
return "<div class='wiki-embed ".$wiki_embed_class."' rel='{$url}'>".$wiki_page_body."</div>".$wiki_embed_end;
}
/**
* remote_request_wikipage function.
* This function get the content from the url and stores in an transient.
* @access public
* @param mixed $url
* @param mixed $update
* @return void
*/
function remote_request_wikipage( $url, $update ) {
$wikiembed_id = $this->get_page_id( $url, false, false, false, false, false ); // just the url gets converted to the id
// grab the content from the cache
if ( false === ( $wiki_page_body = $this->get_cache( $wikiembed_id ) ) || $this->wikiembeds[$wikiembed_id]['expires_on'] < time() ) {
// else return the
$wiki_page = wp_remote_request( $this->action_url( $url ), array( 'timeout' => 20 ) );
if ( ! is_wp_error( $wiki_page ) ) {
$wiki_page_body = $this->rudermentory_check( $wiki_page );
if ( ! $wiki_page_body ) {
return false;
}
} else {
// an error occured try getting the content again
$wiki_page = wp_remote_request( $this->action_url( $url ), array( 'timeout' => 30 ) );
if ( ! is_wp_error( $wiki_page ) ) {
$wiki_page_body = $this->rudermentory_check( $wiki_page );
if ( ! $wiki_page_body ) {
return false;
}
} else {
return false;// error occured while fetching content
}
}
// make sure that we are UTF-8
if ( function_exists('mb_convert_encoding') ) {
$wiki_page_body = mb_convert_encoding( $wiki_page_body, 'HTML-ENTITIES', "UTF-8" );
}
// cache the result
$wiki_page_body = $this->make_safe( $wiki_page_body );
$this->update_cache( $wikiembed_id, $wiki_page_body, $update );
}
return $wiki_page_body;
}
/**
* rudermentory_check function.
*
* @access public
* @param mixed $wiki_page
* @return void
*/
function rudermentory_check( $wiki_page ) {
//rudimentary error check - if the wiki content contains one of the error strings below
//or the http status code is an error than it should not be saved.
$error_strings = array( "Can't contact the database server" );
$errors = false;
foreach ( $error_strings as $error ) {
if ( strpos( $wiki_page['body'], $error ) !== false ) {
$errors = true;
break;
}
}
if ( ! $errors && $wiki_page['response']['code'] == 200 ):
return $wiki_page['body'];
else:
return false;
endif;
}
/**
* pass_url_check function.
*
* @access public
* @param mixed $url
* @return void
*/
function pass_url_check( $url ) {
$white_list = trim( $this->options['security']['whitelist'] );
$global_white_list = get_site_option('wiki_embed_white_list');
if ( !empty( $white_list ) || !empty( $global_white_list ) ) {
$white_list_pass = false;
if( !empty( $white_list ) ):
// http://blog.motane.lu/2009/02/16/exploding-new-lines-in-php/
$white_list_urls = preg_split( '/\r\n|\r|\n/', $this->options['security']['whitelist'] );
endif;
if( !empty( $global_white_list ) && empty( $white_list_urls ) ):
$white_list_urls = preg_split( '/\r\n|\r|\n/', $global_white_list );
elseif( !empty( $global_white_list ) ):
$white_list_urls = array_merge( $white_list_urls, preg_split( '/\r\n|\r|\n/', $global_white_list ) );
endif;
foreach ( $white_list_urls as $check_url ) {
if ( substr( $url, 0, strlen( $check_url ) ) == $check_url ) {
$white_list_pass = true;
break;
}
}
if ( ! $white_list_pass ) {
return false;
}
}
return true;
}
/**
* action_url function.
*
* @access public
* @param mixed $url
* @return void
*/
function action_url( $url ) {
if ( ! function_exists( 'http_build_url' ) ) {
require( WIKI_EMBED_ROOT.'/inc/http_build_url.php' );
}
return http_build_url( $url, array( "query" => "action=render" ), HTTP_URL_JOIN_QUERY );
}
/**
* wiki_embed_make_safe function.
* strip out any unwanted tags - the same way wordpress does
* @access public
* @param mixed $body
* @return void
*/
function make_safe( $body ) {
global $allowedposttags;
$new_tags = $allowedposttags;
foreach ( $allowedposttags as $tag => $array ) {
$new_tags[$tag]['id'] = array();
$new_tags[$tag]['class'] = array();
$new_tags[$tag]['style'] = array();
}
// param
$new_tags['param']['name'] = array();
$new_tags['param']['value'] = array();
// object
$new_tags['object']['type'] = array();
$new_tags['object']['allowscriptaccess'] = array();
$new_tags['object']['allownetworking'] = array();
$new_tags['object']['allowfullscreen'] = array();
$new_tags['object']['width'] = array();
$new_tags['object']['height'] = array();
$new_tags['object']['data'] = array();
// embed
$new_tags['embed']['width'] = array();
$new_tags['embed']['height'] = array();
$new_tags['embed']['type'] = array();
$new_tags['embed']['wmode'] = array();
$new_tags['embed']['src'] = array();
$new_tags['embed']['type'] = array();
// <iframe width="480" height="360" src="http://www.youtube.com/embed/CoAv6yIVkSQ" frameborder="0" allowfullscreen></iframe>
// is there a better way of allowing trusted sources like youtube?
$new_tags['iframe']['allowfullscreen'] = array();
$new_tags['iframe']['width'] = array();
$new_tags['iframe']['height'] = array();
$new_tags['iframe']['src'] = array();
$new_tags['iframe']['frameborder'] = array();
// CTLT change - since mediawiki citation url has colon within it. WordPress will strip out the first part of the url and link will not be complete.
// The change here is to replace :(colon) with _(underscore) so WordPress will pass it.
$body = str_replace(array('cite_ref-:', 'cite_note-:'), array('cite_ref-_', 'cite_note-_'), $body);
// lets sanitize this
$body = wp_kses( $body, $new_tags );
return $body;
}
/**
* render function.
*
* @access public
* @param mixed $wiki_page_body
* @param mixed $has_no_edit
* @param mixed $has_no_contents
* @param mixed $has_no_infobox
* @param mixed $has_accordion
* @param mixed $has_tabs
* @return void
*/
function render( $wiki_page_id, $wiki_page_body, $has_no_edit, $has_no_contents, $has_no_infobox, $has_accordion, $has_tabs, $remove ) {
if ( $has_no_edit || $has_no_contents || $has_no_infobox || $has_accordion || $has_tabs || $remove ) {
require_once( WIKI_EMBED_ROOT."/inc/css_selector.php" ); //for using CSS selectors to query the DOM (instead of xpath)
$wiki_page_id = md5( $wiki_page_id );
//Prevent the parser from throwing PHP warnings if it receives malformed HTML
libxml_use_internal_errors(true);