mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-12-23 15:18:58 +01:00
b82ac2c4d6
- global config (egw_info[server]) changes - user prefs change - acl of the current user changes
472 lines
16 KiB
PHP
472 lines
16 KiB
PHP
<?php
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/**************************************************************************\
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* eGroupWare API loader *
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* This file was originaly written by Dan Kuykendall and Joseph Engo *
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* Copyright (C) 2000, 2001 Dan Kuykendall *
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* Parts Copyright (C) 2003 Free Software Foundation *
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* -------------------------------------------------------------------------*
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* Rewritten by RalfBecker@outdoor-training.de to store the eGW enviroment *
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* (egw-object and egw_info-array) in a php-session and restore it from *
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* there instead of creating it completly new on each page-request. *
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* The enviroment gets now created by the egw-class *
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* -------------------------------------------------------------------------*
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* This library is part of the eGroupWare API http://www.egroupware.org *
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* ------------------------------------------------------------------------ *
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* This program is free software; you can redistribute it and/or modify it *
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* under the terms of the GNU General Public License as published by the *
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* Free Software Foundation; either version 2 of the License, or (at your *
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* option) any later version. *
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\**************************************************************************/
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/* $Id$ */
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/**
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* New written class to create the eGW enviroment AND restore it from a php-session
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*
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* @author RalfBecker@outdoor-training.de
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* @copyright GPL
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* @package api
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* @access public
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*/
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class egw
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{
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/**
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* Turn on debug mode. Will output additional data for debugging purposes.
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* @var string $debug
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* @access public
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*/
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var $debug = 0; // This will turn on debugging information.
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/**
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* @var egw_db-object $db instance of the db-object
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*/
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var $db;
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var $config_table = 'phpgw_config';
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/**
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* Constructor: Instanciates the sub-classes
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*
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* @author RalfBecker@outdoor-training.de
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* @param array $domain_names array with valid egw-domain names
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*/
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function egw($domain_names=null)
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{
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$GLOBALS['egw'] =& $this; // we need to be imediatly avalilible there for the other classes we instanciate
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// for the migration: reference us to the old phpgw object
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$GLOBALS['phpgw'] =& $this;
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// create the DB-object
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$this->db =& CreateObject('phpgwapi.egw_db');
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if ($this->debug)
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{
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$this->db->Debug = 1;
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}
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$this->db->set_app('phpgwapi');
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$this->db->Halt_On_Error = 'no';
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$this->db->connect(
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$GLOBALS['egw_info']['server']['db_name'],
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$GLOBALS['egw_info']['server']['db_host'],
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$GLOBALS['egw_info']['server']['db_port'],
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$GLOBALS['egw_info']['server']['db_user'],
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$GLOBALS['egw_info']['server']['db_pass'],
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$GLOBALS['egw_info']['server']['db_type']
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);
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// check if eGW is already setup, if not redirect to setup/
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$this->db->select($this->config_table,'COUNT(config_name)',false,__LINE__,__FILE__);
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if(!$this->db->next_record())
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{
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$setup_dir = str_replace($_SERVER['PHP_SELF'],'index.php','setup/');
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echo '<center><b>Fatal Error:</b> It appears that you have not created the database tables for '
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.'eGroupWare. Click <a href="' . $setup_dir . '">here</a> to run setup.</center>';
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exit;
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}
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$this->db->Halt_On_Error = 'yes';
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// Set the DB's client charset if a system-charset is set
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$this->db->select($this->config_table,'config_value',array(
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'config_app' => 'phpgwapi',
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'config_name' => 'system_charset',
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),__LINE__,__FILE__);
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if ($this->db->next_record() && $this->db->f(0))
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{
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$this->db->Link_ID->SetCharSet($this->db->f(0));
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}
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// load up the $GLOBALS['egw_info']['server'] array
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$this->db->select($this->config_table,'*',array('config_app' => 'phpgwapi'),__LINE__,__FILE__);
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while (($row = $this->db->row(true)))
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{
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$GLOBALS['egw_info']['server'][$row['config_name']] = stripslashes($row['config_value']);
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}
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// setup the other subclasses
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$this->log =& CreateObject('phpgwapi.errorlog');
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$this->translation =& CreateObject('phpgwapi.translation');
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$this->common =& CreateObject('phpgwapi.common');
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$this->hooks =& CreateObject('phpgwapi.hooks');
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$this->auth =& CreateObject('phpgwapi.auth');
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$this->accounts =& CreateObject('phpgwapi.accounts');
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$this->acl =& CreateObject('phpgwapi.acl');
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$this->session =& CreateObject('phpgwapi.sessions',$domain_names);
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$this->preferences =& CreateObject('phpgwapi.preferences');
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$this->applications =& CreateObject('phpgwapi.applications');
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$this->contenthistory =& CreateObject('phpgwapi.contenthistory');
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$this->datetime =& CreateObject('phpgwapi.datetime');
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include_once(EGW_INCLUDE_ROOT.'/phpgwapi/inc/class.error.inc.php');
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register_shutdown_function(array($this->common, 'egw_final'));
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if ($GLOBALS['egw_info']['flags']['currentapp'] != 'login' && $GLOBALS['egw_info']['flags']['currentapp'] != 'logout')
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{
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$this->verify_session();
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$this->applications->read_installed_apps(); // to get translated app-titles, has to be after verify_session
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$this->define_egw_constants();
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$this->load_theme_info();
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$this->check_app_rights();
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$this->load_optional_classes();
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}
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else // set the defines for login, in case it's more then just login
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{
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$this->define_egw_constants();
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}
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}
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/**
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* __wakeup function gets called by php while unserializing the egw-object, eg. reconnects to the DB
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*
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* @author RalfBecker@outdoor-training.de
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*/
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function __wakeup()
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{
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$GLOBALS['egw'] =& $this; // we need to be imediatly avalilible there for the other classes we instanciate
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// for the migration: reference us to the old phpgw object
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$GLOBALS['phpgw'] =& $this;
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register_shutdown_function(array($this->common, 'egw_final'));
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$this->db->connect(); // we need to re-connect
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foreach(array('translation','hooks','auth','accounts','acl','session','preferences','applications','contenthistory','contacts') as $class)
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{
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if (is_object($this->$class->db))
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{
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$this->$class->db->Link_ID =& $this->db->Link_ID;
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}
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}
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if ($GLOBALS['egw_info']['server']['account_repository'] == 'ldap')
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{
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// reconnect the LDAP server, unfortunally this does not work via accounts::__wakeup() as the common-object is not yet availible
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$this->accounts->ds = $this->common->ldapConnect();
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}
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$this->define_egw_constants();
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}
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/**
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* wakeup2 funcontion needs to be called after unserializing the egw-object
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*
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* It adapts the restored object/enviroment to the changed (current) application / page-request
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*
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* @author RalfBecker@outdoor-training.de
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*/
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function wakeup2()
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{
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// do some application specific stuff, need to be done as we are different (current) app now
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if (is_object($this->template))
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{
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$this->template->set_root(EGW_APP_TPL);
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}
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$this->translation->add_app($GLOBALS['egw_info']['flags']['currentapp']);
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// verify the session
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$GLOBALS['egw']->verify_session();
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$GLOBALS['egw']->check_app_rights();
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$this->load_optional_classes();
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}
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/**
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* load optional classes by mentioning them in egw_info[flags][enable_CLASS_class] => true
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*
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* Also loads the template-class if not egw_info[flags][disable_Template_class] is set
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*
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* Maybe the whole thing should be depricated ;-)
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*/
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function load_optional_classes()
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{
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// load classes explicitly mentioned
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foreach($GLOBALS['egw_info']['flags'] as $enable_class => $enable)
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{
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if ($enable && substr($enable_class,0,7) == 'enable_')
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{
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$enable_class = substr($enable_class,7,-6);
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$this->$enable_class =& CreateObject('phpgwapi.'.$enable_class);
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}
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}
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// load the template class, if not turned off
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if(!$GLOBALS['egw_info']['flags']['disable_Template_class'])
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{
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$this->template =& CreateObject('phpgwapi.Template',EGW_APP_TPL);
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}
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// output the header unless the developer turned it off
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if (!@$GLOBALS['egw_info']['flags']['noheader'])
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{
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$GLOBALS['egw']->common->egw_header();
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}
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// Load the (depricated) app include files if they exists
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if (EGW_APP_INC != "" && ! preg_match ('/phpgwapi/i', EGW_APP_INC) &&
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file_exists(EGW_APP_INC . '/functions.inc.php') && !isset($_GET['menuaction']))
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{
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include(EGW_APP_INC . '/functions.inc.php');
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}
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if (!@$GLOBALS['egw_info']['flags']['noheader'] && !@$GLOBALS['egw_info']['flags']['noappheader'] &&
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file_exists(EGW_APP_INC . '/header.inc.php') && !isset($_GET['menuaction']))
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{
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include(EGW_APP_INC . '/header.inc.php');
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}
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}
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/**
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* Verfiy there is a valid session
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*
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* One can specify a callback, which gets called if there's no valid session. If the callback returns true, the parameter
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* containst account-details (in keys login, passwd and passwd_type) to automatic create an (anonymous session)
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*
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* It also checks if enforce_ssl is set in the DB and redirects to the https:// version of the site.
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*
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* If there is no valid session and none could be automatic created, the function will redirect to login and NOT return
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*/
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function verify_session()
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{
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if(isset($GLOBALS['egw_info']['server']['enforce_ssl']) && !$_SERVER['HTTPS'])
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{
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Header('Location: https://' . $GLOBALS['egw_info']['server']['hostname'] . $GLOBALS['egw_info']['server']['webserver_url'] . $_SERVER['REQUEST_URI']);
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exit;
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}
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$account_callback = $GLOBALS['egw_info']['flags']['autocreate_session_callback'];
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// check if we have a session, if not try to automatic create one
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if (!$this->session->verify() &&
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!($account_callback && function_exists($account_callback) && $account_callback($account) &&
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($sessionid = $this->session->create($account))))
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{
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//echo "<p>account_callback='$account_callback', account=".print_r($account,true).", sessionid=$sessionid</p>\n"; exit;
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// we forward to the same place after the re-login
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if ($GLOBALS['egw_info']['server']['webserver_url'] && $GLOBALS['egw_info']['server']['webserver_url'] != '/')
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{
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list(,$relpath) = explode($GLOBALS['egw_info']['server']['webserver_url'],$_SERVER['PHP_SELF'],2);
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}
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else // the webserver-url is empty or just a slash '/' (eGW is installed in the docroot and no domain given)
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{
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if (preg_match('/^https?:\/\/[^\/]*\/(.*)$/',$relpath=$_SERVER['PHP_SELF'],$matches))
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{
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$relpath = $matches[1];
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}
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}
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// this removes the sessiondata if its saved in the URL
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$query = preg_replace('/[&]?sessionid(=|%3D)[^&]+&kp3(=|%3D)[^&]+&domain=.*$/','',$_SERVER['QUERY_STRING']);
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Header('Location: '.$GLOBALS['egw_info']['server']['webserver_url'].'/login.php?cd=10&phpgw_forward='.urlencode($relpath.(!empty($query) ? '?'.$query : '')));
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exit;
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}
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}
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/**
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* Verfiy the user has rights for the requested app
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*
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* If the user has no rights for the app (eg. called via URL) he get a permission denied page (this function does NOT return)
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*/
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function check_app_rights()
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{
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if ($GLOBALS['egw_info']['flags']['currentapp'] != 'about')
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{
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// This will need to use ACL in the future
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if (!$GLOBALS['egw_info']['user']['apps'][$GLOBALS['egw_info']['flags']['currentapp']] ||
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($GLOBALS['egw_info']['flags']['admin_only'] && !$GLOBALS['egw_info']['user']['apps']['admin']))
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{
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$this->common->egw_header();
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if ($GLOBALS['egw_info']['flags']['noheader'])
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{
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echo parse_navbar();
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}
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$this->log->write(array('text'=>'W-Permissions, Attempted to access %1','p1'=>$GLOBALS['egw_info']['flags']['currentapp']));
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echo '<p><center><b>'.lang('Access not permitted').'</b></center>';
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$this->common->egw_exit(True);
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}
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}
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}
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/**
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* Load old theme info into egw_info[theme]
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*
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* @deprecated all theming should be done via CSS files of the template
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*/
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function load_theme_info()
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{
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global $phpgw_info; // this is necesary as the included theme-files use $phpgw_info !!!
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// at the moment we still need the theme files, hopefully they are gone soon in favor of CSS
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if(@file_exists(EGW_SERVER_ROOT . '/phpgwapi/themes/' . $GLOBALS['egw_info']['user']['preferences']['common']['theme'] . '.theme'))
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{
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include($file = EGW_SERVER_ROOT . '/phpgwapi/themes/' . $GLOBALS['egw_info']['user']['preferences']['common']['theme'] . '.theme');
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}
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elseif(@file_exists(EGW_SERVER_ROOT . '/phpgwapi/themes/default.theme'))
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{
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include($file = EGW_SERVER_ROOT . '/phpgwapi/themes/default.theme');
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}
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else
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{
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// Hope we don't get to this point. Better then the user seeing a
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// complety back screen and not know whats going on
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echo '<body bgcolor="FFFFFF">';
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$this->log->write(array('text'=>'F-Abort, No themes found'));
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exit;
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}
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}
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/**
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* create all the defines / constants of the eGW-enviroment (plus the depricated phpgw ones)
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*/
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function define_egw_constants()
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{
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define('SEP',filesystem_separator());
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define('EGW_ACL_READ',1);
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define('EGW_ACL_ADD',2);
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define('EGW_ACL_EDIT',4);
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define('EGW_ACL_DELETE',8);
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define('EGW_ACL_PRIVATE',16);
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define('EGW_ACL_GROUP_MANAGERS',32);
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define('EGW_ACL_CUSTOM_1',64);
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define('EGW_ACL_CUSTOM_2',128);
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define('EGW_ACL_CUSTOM_3',256);
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// and the old ones
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define('PHPGW_ACL_READ',1);
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define('PHPGW_ACL_ADD',2);
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define('PHPGW_ACL_EDIT',4);
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define('PHPGW_ACL_DELETE',8);
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define('PHPGW_ACL_PRIVATE',16);
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define('PHPGW_ACL_GROUP_MANAGERS',32);
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define('PHPGW_ACL_CUSTOM_1',64);
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define('PHPGW_ACL_CUSTOM_2',128);
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define('PHPGW_ACL_CUSTOM_3',256);
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// A few hacker resistant constants that will be used throught the program
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define('EGW_TEMPLATE_DIR', $this->common->get_tpl_dir('phpgwapi'));
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define('EGW_IMAGES_DIR', $this->common->get_image_path('phpgwapi'));
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define('EGW_IMAGES_FILEDIR', $this->common->get_image_dir('phpgwapi'));
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define('EGW_APP_ROOT', $this->common->get_app_dir());
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define('EGW_APP_INC', $this->common->get_inc_dir());
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define('EGW_APP_TPL', $this->common->get_tpl_dir());
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define('EGW_IMAGES', $this->common->get_image_path());
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define('EGW_APP_IMAGES_DIR', $this->common->get_image_dir());
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// and the old ones
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define('PHPGW_TEMPLATE_DIR',EGW_TEMPLATE_DIR);
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define('PHPGW_IMAGES_DIR',EGW_IMAGES_DIR);
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define('PHPGW_IMAGES_FILEDIR',EGW_IMAGES_FILEDIR);
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define('PHPGW_APP_ROOT',EGW_APP_ROOT);
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define('PHPGW_APP_INC',EGW_APP_INC);
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define('PHPGW_APP_TPL',EGW_APP_TPL);
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define('PHPGW_IMAGES',EGW_IMAGES);
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define('PHPGW_APP_IMAGES_DIR',EGW_APP_IMAGES_DIR);
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}
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/**
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* force the session cache to be re-created, because some of it's data changed
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*
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* Needs to be called if user-preferences, system-config or enabled apps of the current user have been changed and
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* the change should have immediate effect
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*/
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function invalidate_session_cache()
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{
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unset($_SESSION['egw_info_cache']);
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unset($_SESSION['egw_included_files']);
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unset($_SESSION['egw_object_cache']);
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}
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/**
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* run string through htmlspecialchars and stripslashes
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*
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* @param string $s
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* @return string The string with html special characters replaced with entities
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*/
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function strip_html($s)
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{
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return htmlspecialchars(stripslashes($s));
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}
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/**
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* Link url generator
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*
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* Used for backwards compatibility and as a shortcut. If no url is passed, it will use PHP_SELF. Wrapper to session->link()
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*
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* @param string $string The url the link is for
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* @param string/array $extravars Extra params to be passed to the url
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* @return string The full url after processing
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*/
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function link($url = '', $extravars = '')
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{
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return $this->session->link($url, $extravars);
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}
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function redirect_link($url = '',$extravars='')
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{
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$this->redirect($this->session->link($url, $extravars));
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}
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/**
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* Handles redirects under iis and apache, it does NOT return (calls exit)
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*
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* This function handles redirects under iis and apache it assumes that $phpgw->link() has already been called
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*
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* @param string The url ro redirect to
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*/
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function redirect($url = '')
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{
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/* global $HTTP_ENV_VARS; */
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$iis = @strpos($GLOBALS['HTTP_ENV_VARS']['SERVER_SOFTWARE'], 'IIS', 0);
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if(!$url)
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{
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$url = $_SERVER['PHP_SELF'];
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}
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if($iis)
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{
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echo "\n<HTML>\n<HEAD>\n<TITLE>Redirecting to $url</TITLE>";
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echo "\n<META HTTP-EQUIV=REFRESH CONTENT=\"0; URL=$url\">";
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echo "\n</HEAD><BODY>";
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echo "<H3>Please continue to <a href=\"$url\">this page</a></H3>";
|
|
echo "\n</BODY></HTML>";
|
|
}
|
|
else
|
|
{
|
|
Header("Location: $url");
|
|
print("\n\n");
|
|
}
|
|
exit;
|
|
}
|
|
|
|
/**
|
|
* Shortcut to translation class
|
|
*
|
|
* This function is a basic wrapper to translation->translate()
|
|
*
|
|
* @deprecated only used in the old timetracker
|
|
* @param string The key for the phrase
|
|
* @see translation->translate()
|
|
*/
|
|
function lang($key,$args=null)
|
|
{
|
|
if (!is_array($args))
|
|
{
|
|
$args = func_get_args();
|
|
array_shift($args);
|
|
}
|
|
return $this->translation->translate($key,$args);
|
|
}
|
|
}
|