--- a/includes/pageprocess.php~ Wed Jun 13 16:32:27 2007 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,455 +0,0 @@
-<?php
-/*
- * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
- * Version 1.0 (Banshee)
- * pageprocess.php - intelligent retrieval of pages
- * Copyright (C) 2006-2007 Dan Fuhry
- *
- * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2 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 General Public License for details.
- */
-
-/**
- * Class to handle fetching page text (possibly from a cache) and formatting it.
- * @package Enano
- * @subpackage UI
- * @copyright 2007 Dan Fuhry
- * @license GNU General Public License <http://www.gnu.org/licenses/gpl.html>
- */
-
-class PageProcessor
-{
-
- /**
- * Page ID and namespace of the page handled by this instance
- * @var string
- */
-
- var $page_id;
- var $namespace;
-
- /**
- * Tracks if the page we're loading exists in the database or not.
- * @var bool
- */
-
- var $page_exists = false;
-
- /**
- * Permissions!
- * @var object
- */
-
- var $perms = null;
-
- /**
- * Switch to track if redirects are allowed. Defaults to true.
- * @var bool
- */
-
- var $allow_redir = true;
-
- /**
- * If this is set to true, this will call the header and footer funcs on $template when render() is called.
- * @var bool
- */
-
- var $send_headers = false;
-
- /**
- * Cache the fetched text so we don't fetch it from the DB twice.
- * @var string
- */
-
- var $text_cache = '';
-
- /**
- * Debugging information to track errors. You can set enable to false to disable sending debug information.
- * @var array
- */
-
- var $debug = array(
- 'enable' => true,
- 'works' => false
- );
-
- /**
- * Constructor.
- * @param string The page ID (urlname) of the page
- * @param string The namespace of the page
- */
-
- function __construct( $page_id, $namespace )
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
-
- // See if we can get some debug info
- if ( function_exists('debug_backtrace') && $this->debug['enable'] )
- {
- $this->debug['works'] = true;
- $this->debug['backtrace'] = enano_debug_print_backtrace(true);
- }
-
- // First things first - check page existence and permissions
-
- if ( !isset($paths->nslist[$namespace]) )
- {
- $this->send_error('The namespace "' . htmlspecialchars($namespace) . '" does not exist.');
- }
-
- $this->_setup( $page_id, $namespace );
-
- }
-
- /**
- * The main method to send the page content. Also responsible for checking permissions.
- */
-
- function send()
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
- if ( !$this->perms->get_permissions('read') )
- {
- $this->err_access_denied();
- return false;
- }
- if ( $this->namespace == 'Special' || $this->namespace == 'Admin' )
- {
- if ( !$this->page_exists )
- {
- redirect( makeUrl(getConfig('main_page')), 'Can\'t find special page', 'The special or administration page you requested does not exist. You will now be transferred to the main page.', 2 );
- }
- $func_name = "page_{$this->namespace}_{$this->page_id}";
- if ( function_exists($func_name) )
- {
- return @call_user_func($func_name);
- }
- else
- {
- $title = 'Page backend not found';
- $message = "The administration page you are looking for was properly registered using the page API, but the backend function
- (<tt>$fname</tt>) was not found. If this is a plugin page, then this is almost certainly a bug with the plugin.";
-
- if ( $this->send_headers )
- {
- $template->tpl_strings['PAGE_NAME'] = $title;
- $template->header();
- echo "<p>$message</p>";
- $template->footer();
- }
- else
- {
- echo "<h2>$title</h2>
- <p>$message</p>";
- }
- return false;
- }
- }
- else if ( in_array($this->namespace, array('Article', 'User', 'Project', 'Help', 'File', 'Category')) && $this->page_exists )
- {
- // Send as regular page
- $text = $this->fetch_text();
- if ( $text == 'err_no_text_rows' )
- {
- $this->err_no_rows();
- return false;
- }
- else
- {
- $this->render();
- }
- }
- else if ( ( $this->namespace == 'Template' || $this->namespace == 'System' ) && $this->page_exists )
- {
- $this->header();
-
- $text = $this->fetch_text();
- $text = preg_replace('/<noinclude>(.*?)<\/noinclude>/is', '\\1', $text);
- $text = preg_replace('/<nodisplay>(.*?)<\/nodisplay>/is', '', $text);
-
- $text = RenderMan::render( $text );
-
- echo $text;
-
- $this->footer();
-
- }
- else if ( !$this->page_exists )
- {
- // Perhaps this is hooked?
- ob_start();
-
- $code = $plugins->setHook('page_not_found');
- foreach ( $code as $cmd )
- {
- eval($cmd);
- }
-
- $ob = ob_get_contents();
-
- if ( empty($ob) )
- {
- $this->err_page_not_existent();
- }
-
- }
-
- }
-
- /**
- * Sets internal variables.
- * @access private
- */
-
- function _setup($page_id, $namespace)
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
-
- $page_id_cleaned = sanitize_page_id($page_id);
-
- $this->page_id = $page_id_cleaned;
- $this->namespace = $namespace;
-
- $this->perms = $session->fetch_page_acl( $page_id, $namespace );
-
- // Exception for Admin: pages
- if ( $this->namespace == 'Admin' )
- {
- $fname = "page_Admin_{$this->page_id}";
- }
-
- // Does the page "exist"?
- if ( $paths->cpage['urlname_nons'] == $page_id && $paths->namespace == $namespace && !$paths->page_exists && ( $this->namespace == 'Admin' && !function_exists($fname) ) )
- {
- $this->page_exists = false;
- }
- else if ( !isset( $paths->pages[ $paths->nslist[$namespace] . $page_id ] ) && ( $this->namespace == 'Admin' && !function_exists($fname) ) )
- {
- $this->page_exists = false;
- }
- else
- {
- $this->page_exists = true;
- }
- }
-
- /**
- * Renders it all in one go, and echoes it out. This assumes that the text is in the DB.
- * @access private
- */
-
- function render()
- {
- $text = $this->fetch_text();
-
- $this->header();
- echo RenderMan::render($text);
- $this->footer();
- }
-
- /**
- * Sends the page header, dependent on, of course, whether we're supposed to.
- */
-
- function header()
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
- if ( $this->send_headers )
- $template->header();
- }
-
- /**
- * Sends the page footer, dependent on, of course, whether we're supposed to.
- */
-
- function footer()
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
- if ( $this->send_headers )
- $template->footer();
- }
-
- /**
- * Fetches the raw, unfiltered page text.
- * @access public
- */
-
- function fetch_text()
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
-
- if ( !empty($this->text_cache) )
- {
- return $this->text_cache;
- }
-
- $q = $db->sql_query('SELECT page_text, char_tag FROM '.table_prefix.'page_text WHERE page_id=\'' . $this->page_id . '\' AND namespace=\'' . $this->namespace . '\';');
- if ( !$q )
- {
- $this->send_error('Error during SQL query.', true);
- }
- if ( $db->numrows() < 1 )
- {
- $this->page_exists = false;
- return 'err_no_text_rows';
- }
-
- $row = $db->fetchrow();
- $db->free_result();
-
- if ( !empty($row['char_tag']) )
- {
- // This page text entry uses the old text-escaping format
- $from = array(
- "{APOS:{$row['char_tag']}}",
- "{QUOT:{$row['char_tag']}}",
- "{SLASH:{$row['char_tag']}}"
- );
- $to = array("'", '"', '\\');
- $row['page_text'] = str_replace($from, $to, $row['page_text']);
- }
-
- $this->text_cache = $row['page_text'];
-
- return $row['page_text'];
-
- }
-
- /**
- * Send the error message to the user that the access to this page is denied.
- * @access private
- */
-
- function err_access_denied()
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
-
- $ob = '';
- $template->tpl_strings['PAGE_NAME'] = 'Access denied';
-
- if ( $this->send_headers )
- {
- $ob .= $template->getHeader();
- }
-
- $ob .= '<div class="error-box"><b>Access to this page is denied.</b><br />This may be because you are not logged in or you have not met certain criteria for viewing this page.</div>';
-
- if ( $this->send_headers )
- {
- $ob .= $template->getFooter();
- }
- echo $ob;
- }
-
- /**
- * Send the error message to the user complaining that there weren't any rows.
- * @access private
- */
-
- function err_no_rows()
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
-
- $title = 'No text rows';
- $message = 'While the page\'s existence was verified, there were no rows in the database that matched the query for the text. This may indicate a bug with the software; ask the webmaster for more information.';
- if ( $this->send_headers )
- {
- $template->tpl_strings['PAGE_NAME'] = $title;
- $template->header();
- echo "<p>$message</p>";
- $template->footer();
- }
- else
- {
- echo "<h2>$title</h2>
- <p>$message</p>";
- }
- }
-
- /**
- * Tell the user the page doesn't exist, and present them with their options.
- * @access private
- */
-
- function err_page_not_existent()
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
-
- $this->header();
- header('HTTP/1.1 404 Not Found');
- echo '<h3>There is no page with this title yet.</h3>
- <p>You have requested a page that doesn\'t exist yet.';
- if ( $session->get_permissions('create_page') )
- {
- echo ' You can <a href="'.makeUrlNS($this->namespace, $this->page_id, 'do=edit', true).'" onclick="ajaxEditor(); return false;">create this page</a>, or return to the <a href="'.makeUrl(getConfig('main_page')).'">homepage</a>.';
- }
- else
- {
- echo ' Return to the <a href="'.makeUrl(getConfig('main_page')).'">homepage</a>.</p>';
- }
- if ( $session->get_permissions('history_rollback') )
- {
- $e = $db->sql_query('SELECT * FROM ' . table_prefix . 'logs WHERE action=\'delete\' AND page_id=\'' . $this->page_id . '\' AND namespace=\'' . $this->namespace . '\' ORDER BY time_id DESC;');
- if ( !$e )
- {
- $db->_die('The deletion log could not be selected.');
- }
- if ( $db->numrows() > 0 )
- {
- $r = $db->fetchrow();
- echo '<p>This page also appears to have some log entries in the database - it seems that it was deleted on ' . $r['date_string'] . '. You can probably <a href="'.makeUrl($paths->page, 'do=rollback&id='.$r['time_id']).'" onclick="ajaxRollback(\''.$r['time_id'].'\'); return false;">roll back</a> the deletion.</p>';
- }
- $db->free_result();
- }
- echo '<p>
- HTTP Error: 404 Not Found
- </p>';
- $this->footer();
- }
-
- /**
- * PHP 4 constructor.
- * @see PageProcessor::__construct()
- */
-
- function PageProcessor( $page_id, $namespace )
- {
- $this->__construct($page_id, $namespace);
- }
-
- /**
- * Send an error message and die
- * @var string Error message
- * @var bool If true, send DBAL's debugging information as well
- */
-
- function send_error($message, $sql = false)
- {
- global $db, $session, $paths, $template, $plugins; // Common objects
-
- $content = "<p>$message</p>";
- $template->tpl_strings['PAGE_NAME'] = 'General error in page fetcher';
-
- if ( $this->debug['works'] )
- {
- $content .= $this->debug['backtrace'];
- }
-
- header('HTTP/1.1 500 Internal Server Error');
-
- $template->header();
- echo $content;
- $template->footer();
-
- $db->close();
-
- exit;
-
- }
-
-} // class PageProcessor
-
-?>