initial commit

admin.php

+<?php
+if (!defined('PHPWG_ROOT_PATH')) die('Hacking attempt!');
+
+if (isset($_POST['submit'])) {
+  if(isset($_POST['cdn_enabled'])) {
+    $cdn_enabled = 'true';
+  }else{
+    $cdn_enabled = 'false';
+  }
+  $q = 'UPDATE '.CONFIG_TABLE.' SET value="'.$cdn_enabled.'" WHERE param="cdn_enabled"';
+  pwg_query($q);
+  $q = 'UPDATE '.CONFIG_TABLE.' SET value="'.$_POST['cdn_count'].'" WHERE param="cdn_count"';
+  pwg_query($q);
+  $q = 'UPDATE '.CONFIG_TABLE.' SET value="'.$_POST['cdn_host'].'" WHERE param="cdn_host"';
+  pwg_query($q);
+  list($conf['cdn_enabled']) = array_from_query('SELECT value FROM '.CONFIG_TABLE.' WHERE param = "cdn_enabled"', 'value');
+  list($conf['cdn_count']) = array_from_query('SELECT value FROM '.CONFIG_TABLE.' WHERE param = "cdn_count"', 'value');
+  list($conf['cdn_host']) = array_from_query('SELECT value FROM '.CONFIG_TABLE.' WHERE param = "cdn_host"', 'value');
+}
+
+$template->set_filename('plugin_admin_content', dirname(__FILE__).'/admin.tpl');
+
+$template->assign(
+    array(
+      'CDN_ENABLED' => $conf['cdn_enabled'],
+      'CDN_COUNT'    => $conf['cdn_count'],
+      'CDN_HOST'    => $conf['cdn_host'],
+    )
+);
+
+$template->assign_var_from_handle('ADMIN_CONTENT', 'plugin_admin_content');
+?>

admin.tpl

+<div class="titlePage">
+ <h2>{'CDN'|@translate}</h2>
+</div>
+ 
+<form method="post" class="properties">
+
+	<fieldset>
+		<legend>{'CDN'|@translate}</legend>
+    <ul>
+      <li>
+        <label>
+          {'Enabled:'|@translate}
+          <input type="checkbox" name="cdn_enabled"  value="true"{if $CDN_ENABLED} checked="checked"{/if}>
+        </label>
+      </li>
+      <li>
+        <label>
+          {'Host:'|@translate}
+          <input type="text" name="cdn_host"{if $CDN_HOST} value="{$CDN_HOST}"{/if}> (the # will be replaced with a number from 0 to &lt;count&gt;)
+        </label>
+      </li>
+      <li>
+        <label>
+          {'Count:'|@translate}
+          <input type="text" name="cdn_count"{if $CDN_COUNT} value="{$CDN_COUNT}"{/if}>
+        </label>
+      </li>
+    </ul>
+  </fieldset>
+
+  <p>
+    <input class="submit" type="submit" name="submit" value="{'Submit'|@translate}">
+  </p>
+
+</form>
\ No newline at end of file

index.php

+<?php
+$url = '../';
+header( 'Request-URI: '.$url );
+header( 'Content-Location: '.$url );
+header( 'Location: '.$url );
+exit();
+?>
+
+

main.inc.php

+<?php
+/*
+Version: 0.1
+Plugin Name: CDN
+Plugin URI: // Here comes a link to the Piwigo extension gallery, after
+            // publication of your plugin. For auto-updates of the plugin.
+Author: Jan Grewe <jan@faked.org>
+Description: Set a different host to use as a CDN/Caching Proxy
+*/
+
+// Add an entry to the 'Plugins' menu.
+add_event_handler('get_admin_plugin_menu_links', 'cdn_admin_menu');
+
+function cdn_admin_menu($menu) {
+	global $page,$conf;
+	if ($conf['cdn_enabled'] == 'true' && empty($conf['cdn_host']) and in_array($page['page'], array('intro','plugins_list'))) {
+		$page['errors'][] = l10n('You need to set your CDN host');
+	}
+	$admin_url = get_admin_plugin_menu_link(dirname(__FILE__).'/admin.php');
+	array_push($menu, array(
+		'NAME'  => 'CDN',
+		'URL'   => get_admin_plugin_menu_link(dirname(__FILE__)).'/admin.php'
+	)
+ );
+ return $menu;
+}
+
+add_event_handler('get_derivative_url', 'cdn_add_prefix');
+add_event_handler('get_src_image_url', 'cdn_add_prefix');
+
+function cdn_add_prefix($content) {
+	global $conf;
+	if ($conf['cdn_enabled'] == 'true') {
+		$cdnHost = str_replace('#', rand(0, $conf['cdn_count']-1), $conf['cdn_host']);
+		$cdnUrl = 'http://'.$cdnHost.'/'.$_SERVER['SERVER_NAME'].make_index_url();
+		if(substr($content, 0, 5) == '_data') {
+			$content = $cdnUrl.$content;
+		}elseif(substr($content, 0, 5) == 'i.php') {
+			$content = $cdnUrl.$content;
+		}elseif(substr($content, 0, 11) == './galleries') {
+			$content = $cdnUrl.substr($content, 2);
+		}
+	}
+	return $content;
+}
+
+?>
\ No newline at end of file

maintain.class.php

+<?php
+
+if (!defined('PHPWG_ROOT_PATH')) die('Hacking attempt!');
+
+class cdn_maintain extends PluginMaintain {
+  
+  function install($plugin_version, &$errors=array()) {
+    $q = 'INSERT INTO '.CONFIG_TABLE.' (param, value, comment) VALUES ("cdn_host", "cdn#.example.com", "CDN host");';
+    pwg_query($q);
+    $q = 'INSERT INTO '.CONFIG_TABLE.' (param, value, comment) VALUES ("cdn_enabled", "false", "CDN enabled")';
+    pwg_query($q);
+    $q = 'INSERT INTO '.CONFIG_TABLE.' (param, value, comment) VALUES ("cdn_count", "3", "CDN host count")';
+    pwg_query($q);
+  }
+
+  function activate($plugin_version, &$errors=array()) {
+  }
+  
+  function update($old_version, $new_version, &$errors=array()) {
+  }
+
+  function deactivate() {
+  }
+
+  function uninstall() {
+    $q = 'DELETE FROM '.CONFIG_TABLE.' WHERE param LIKE "cdn_%";';
+    pwg_query($q);
+  }
+
+}
+
+?>
\ No newline at end of file