gnu-social/plugins/OpenX/OpenXPlugin.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Plugin for OpenX ad server
*
* 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 Ads
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2010 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')) {
exit(1);
}
/**
* Plugin for OpenX Ad Server
*
* This plugin supports the OpenX ad server, http://www.openx.org/
*
* We support the 4 ad sizes for the Universal Ad Platform (UAP):
*
* Medium Rectangle
* (Small) Rectangle
* Leaderboard
* Wide Skyscraper
*
* They fit in different places on the default theme. Some themes
* might interact quite poorly with this plugin.
*
* To enable advertising, you will need an OpenX server. You'll need
* to set up a "zone" for your StatusNet site that identifies a
* kind of ad you want to place (of the above 4 sizes).
*
* Add the plugin to config.php like so:
*
* addPlugin('OpenX', array('adScript' => 'full path to script',
* 'rectangle' => 1));
*
* Here, the 'adScript' parameter is the full path to the OpenX
* ad script, like 'http://example.com/www/delivery/ajs.php'. Note
* that we don't do any magic to swap between HTTP and HTTPS, so
* if you want HTTPS, say so.
*
* The 'rectangle' parameter is the zone ID for that ad space on
* your site. If you've configured another size, try 'mediumRectangle',
* 'leaderboard', or 'wideSkyscraper'.
*
* If for some reason your ad server is different from the default,
* use the 'adScript' parameter to set the full path to the ad script.
*
* @category Ads
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*
* @seeAlso UAPPlugin
*/
class OpenXPlugin extends UAPPlugin
{
public $adScript = null;
/**
* Show a medium rectangle 'ad'
*
* @param Action $action Action being shown
*
* @return void
*/
protected function showMediumRectangle($action)
{
$this->showAd($action, $this->mediumRectangle);
}
/**
* Show a rectangle 'ad'
*
* @param Action $action Action being shown
*
* @return void
*/
protected function showRectangle($action)
{
$this->showAd($action, $this->rectangle);
}
/**
* Show a wide skyscraper ad
*
* @param Action $action Action being shown
*
* @return void
*/
protected function showWideSkyscraper($action)
{
$this->showAd($action, $this->wideSkyscraper);
}
/**
* Show a leaderboard ad
*
* @param Action $action Action being shown
*
* @return void
*/
protected function showLeaderboard($action)
{
$this->showAd($action, $this->leaderboard);
}
/**
* Show an ad using OpenX
*
* @param Action $action Action being shown
* @param integer $zone Zone to show
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*
* @return void
*/
protected function showAd($action, $zone)
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{
$scr = <<<ENDOFSCRIPT
var m3_u = '%s';
var m3_r = Math.floor(Math.random()*99999999999);
if (!document.MAX_used) document.MAX_used = ',';
document.write ("<scr"+"ipt type='text/javascript' src='"+m3_u);
document.write ("?zoneid=%d");
document.write ('&amp;cb=' + m3_r);
if (document.MAX_used != ',') document.write ("&amp;exclude=" + document.MAX_used);
document.write (document.charset ? '&amp;charset='+document.charset : (document.characterSet ? '&amp;charset='+document.characterSet : ''));
document.write ("&amp;loc=" + escape(window.location));
if (document.referrer) document.write ("&amp;referer=" + escape(document.referrer));
if (document.context) document.write ("&context=" + escape(document.context));
if (document.mmm_fo) document.write ("&amp;mmm_fo=1");
document.write ("'><\/scr"+"ipt>");
ENDOFSCRIPT;
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$action->inlineScript(sprintf($scr, $this->adScript, $zone));
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return true;
}
}