<?php
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/*
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Copyright (c) 2007, Till Brehm, projektfarm Gmbh
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of ISPConfig nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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class modules {
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var $notification_hooks = array();
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/*
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This function is called to load the modules from the mods-available folder
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*/
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function loadModules() {
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global $app, $conf;
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$modules_dir = $conf["rootpath"].$conf["fs_div"]."mods-enabled".$conf["fs_div"];
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if (is_dir($modules_dir)) {
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if ($dh = opendir($modules_dir)) {
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while (($file = readdir($dh)) !== false) {
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if($file != '.' && $file != '..' && substr($file,-8,8) == '.inc.php') {
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$module_name = substr($file,0,-8);
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include_once($modules_dir.$file);
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$app->log("Loading Module: $module_name",LOGLEVEL_DEBUG);
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$app->loaded_modules[$module_name] = new $module_name;
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$app->loaded_modules[$module_name]->onLoad();
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}
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}
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}
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} else {
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$app->log("Modules directory missing: $modules_dir",LOGLEVEL_ERROR);
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}
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}
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/*
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This function is called by the modules to register for a specific
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table change notification
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*/
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function registerTableHook($table_name,$module_name,$function_name) {
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global $app;
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$this->notification_hooks[$table_name][] = array('module' => $module_name, 'function' => $function_name);
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$app->log("Registered TableHook '$table_name' in module '$module_name' for processing function '$function_name'",LOGLEVEL_DEBUG);
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}
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/*
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This function goes through all new records in the
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sys_datalog table and and calls the function in the
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modules that hooked on to the table change.
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*/
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function processDatalog() {
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global $app,$conf;
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// TODO: process only new entries.
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$sql = "SELECT * FROM sys_datalog WHERE server_id = ".$conf["server_id"];
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$records = $app->db->queryAllRecords($sql);
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foreach($records as $rec) {
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$data = unserialize(stripslashes($rec["data"]));
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$this->raiseTableHook($rec["dbtable"],$rec["action"],$data);
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}
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$app->db->query("DELETE FROM sys_datalog WHERE datalog_id = ".$rec["datalog_id"]);
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$app->log("Deleting sys_datalog ID ".$rec["datalog_id"],LOGLEVEL_DEBUG);
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}
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function raiseTableHook($table_name,$action,$data) {
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global $app;
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// Get the hooks for this table
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$hooks = $this->notification_hooks[$table_name];
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$app->log("Raised TableHook for table: '$table_name'",LOGLEVEL_DEBUG);
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if(is_array($hooks)) {
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foreach($hooks as $hook) {
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$module_name = $hook["module"];
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$function_name = $hook["function"];
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// Claa the processing function of the module
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$app->log("Call function '$function_name' in module '$module_name' raised by TableHook '$table_name'.",LOGLEVEL_DEBUG);
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call_user_method($function_name,$app->loaded_modules[$module_name],$table_name,$action,$data);
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unset($module_name);
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unset($function_name);
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}
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}
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unset($hook);
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unset($hooks);
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}
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}
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?>
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