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<?php
/**
* Name: Piwik Analytics
* Description: Piwik Analytics Plugin for Friendika
* Version: 1.0
* Author: Tobias Diekershoff <https://diekershoff.homeunix.net/friendika/profile/tobias>
*/
/* Piwik Analytics Plugin for Friendika
*
* Author: Tobias Diekershoff
* tobias.diekershoff@gmx.net
*
* License: 3-clause BSD license
*
* Configuration:
* Add the following two lines to your .htconfig.php file:
*
* $a->config['piwik']['baseurl'] = 'www.example.com/piwik/';
* $a->config['piwik']['siteid'] = '1';
* $a->config['piwik']['optout'] = true; // set to false to disable
*
* Change the siteid to the ID that the Piwik tracker for your Friendika
* installation has. Alter the baseurl to fit your needs, don't care
* about http/https but beware to put the trailing / at the end of your
* setting.
*
* Documentation see http://diekershoff.homeunix.net/redmine/wiki/friendikaplugin/Piwik_Plugin
*/
function piwik_install() {
register_hook('page_end', 'addon/piwik/piwik.php', 'piwik_analytics');
logger("installed piwik plugin");
}
function piwik_uninstall() {
unregister_hook('page_end', 'addon/piwik/piwik.php', 'piwik_analytics');
logger("uninstalled piwik plugin");
}
function piwik_analytics($a,&$b) {
/*
* styling of every HTML block added by this plugin is done in the
* associated CSS file. We just have to tell Friendika to get it
* into the page header.
*/
$a->page['htmlhead'] .= '<link rel="stylesheet" type="text/css" href="' . $a->get_baseurl() . '/addon/piwik/piwik.css' . '" media="all" />' . "\r\n";
/*
* Get the configuration variables from the .htconfig file.
*/
$baseurl = get_config('piwik','baseurl');
$siteid = get_config('piwik','siteid');
$optout = get_config('piwik','optout');
/*
* Add the Piwik code for the site.
*/
$b .= "<div id='piwik-code-block'> <!-- Piwik -->\r\n <script type=\"text/javascript\">\r\n var pkBaseURL = ((\"https:\" == document.location.protocol) ? \"https://".$baseurl."\" : \"http://".$baseurl."\");\r\n document.write(unescape(\"%3Cscript src='\" + pkBaseURL + \"piwik.js' type='text/javascript'%3E%3C/script%3E\"));\r\n </script>\r\n<script type=\"text/javascript\">\r\n try {\r\n var piwikTracker = Piwik.getTracker(pkBaseURL + \"piwik.php\", ".$siteid.");\r\n piwikTracker.trackPageView();\r\n piwikTracker.enableLinkTracking();\r\n }\r\n catch( err ) {}\r\n </script>\r\n<noscript><p><img src=\"http://".$baseurl."/piwik.php?idsite=".$siteid."\" style=\"border:0\" alt=\"\" /></p></noscript>\r\n <!-- End Piwik Tracking Tag --> </div>";
/*
* If the optout variable is set to true then display the notice
* otherwise just include the above code into the page.
*/
if ($optout) {
$b .= "<div id='piwik-optout-link'>";
$b .= t("This website is tracked using the <a href='http://www.piwik.org'>Piwik</a> analytics tool.");
$b .= " ";
$the_url = "http://".$baseurl ."index.php?module=CoreAdminHome&action=optOut";
$b .= sprintf(t("If you do not want that your visits are logged this way you <a href='%s'>can set a cookie to prevent Piwik from tracking further visits of the site</a> (opt-out)."), $the_url);
$b .= "</div>";
}
}
function piwik_plugin_admin (&$a, &$o) {
$t = file_get_contents( dirname(__file__)."/admin.tpl");
$o = replace_macros( $t, array(
'$submit' => t('Submit'),
'$baseurl' => array('baseurl', t('Piwik Base URL'), get_config('piwik','baseurl' ), ''),
'$siteid' => array('siteid', t('Site ID'), get_config('piwik','siteid' ), ''),
'$optout' => array('optout', t('Show opt-out cookie link?'), get_config('piwik','optout' ), ''),
));
}
function piwik_plugin_admin_post (&$a) {
$url = ((x($_POST, 'baseurl')) ? notags(trim($_POST['baseurl'])) : '');
$id = ((x($_POST, 'siteid')) ? trim($_POST['siteid']) : '');
$optout = ((x($_POST, 'optout')) ? trim($_POST['optout']) : '');
set_config('piwik', 'baseurl', $url);
set_config('piwik', 'siteid', $id);
set_config('piwik', 'optout', $optout);
info( t('Settings updated.'). EOL);
}
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