include/wiki.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2006 Polytechnique.org                              *
   4  *  http://opensource.polytechnique.org/                                   *
   5  *                                                                         *
   6  *  This program is free software; you can redistribute it and/or modify   *
   7  *  it under the terms of the GNU General Public License as published by   *
   8  *  the Free Software Foundation; either version 2 of the License, or      *
   9  *  (at your option) any later version.                                    *
  10  *                                                                         *
  11  *  This program is distributed in the hope that it will be useful,        *
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
  14  *  GNU General Public License for more details.                           *
  15  *                                                                         *
  16  *  You should have received a copy of the GNU General Public License      *
  17  *  along with this program; if not, write to the Free Software            *
  18  *  Foundation, Inc.,                                                      *
  19  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
  20  ***************************************************************************/
  21 $wikisites = array('xorg','xnet');
  22
  23 function wiki_pagename() {
  24     $n = str_replace('/', '.', Env::get('n', false));
  25     if (!$n) {
  26         return null;
  27     }
  28     $keywords = explode('.', $n);
  29     $count = count($keywords);
  30     if ($count == 1)
  31         $n = $keywords[0].".".$keywords[0];
  32     else
  33         $n = $keywords[$count - 2].".".$keywords[$count - 1];
  34     global $globals;
  35     if (($urln = str_replace('.', '/', $n)) != Env::get('n') && $n != Env::get('n'))
  36         redirect($globals->relurl.'/'.$urln);
  37     $_REQUEST['n'] = $n;
  38     return $n;
  39 }
  40
  41 function wiki_work_dir() {
  42     global $globals;
  43     return realpath($globals->spoolroot.'htdocs/'.$globals->wiki->workdir);
  44 }
  45
  46 function wiki_template($n) {
  47     global $wikisite;
  48     return $tpl = wiki_work_dir().'/cache_'.$wikisite.'_'.$n.'.tpl';
  49 }
  50
  51 // several files are used for wiki :
  52 // - spool/wiki.d/PageName                           : the wiki page
  53 // - spool/wiki.d/cache_PageName.tpl                 : the template cache
  54 // - spool/templates_c/%%...%%cache_PageName.tpl.php : the PHP from Smarty
  55 function wiki_clear_cache($n) {
  56     global $page, $wikisite, $wikisites;
  57     $oldwikisite = $wikisite;
  58     foreach ($wikisites as $s) {
  59         $wikisite = $s;
  60         $tpl = wiki_template($n);
  61         @unlink($tpl);
  62         $page->clear_compiled_tpl($tpl);
  63     }
  64     $wikisite = $oldwikisite;
  65 }
  66
  67 function wiki_clear_all_cache()
  68 {
  69     system("rm -f ".wiki_work_dir()."/cache_*");
  70 }
  71
  72 // editing pages are not static but used templates too, so we used
  73 // temp template files containing result from wiki
  74 function wiki_create_tmp($content) {
  75     $tmpfile = tempnam(wiki_work_dir(), "temp_");
  76     $f = fopen($tmpfile, 'w');
  77     fputs($f, $content);
  78     fclose($f);
  79     return $tmpfile;
  80 }
  81
  82 function wiki_clean_tmp() {
  83     // clean old tmp files (more than one hour)
  84     $wiki_work_dir = wiki_work_dir();
  85     $dh = opendir(wiki_work_dir());
  86     $time = time();
  87     while (($file = readdir($dh)) !== false) {
  88         if (strpos($file, 'temp_') === 0) {
  89             $created = filectime($wiki_work_dir.'/'.$file);
  90             if ($time-$created > 60 * 60)
  91                 @unlink($wiki_work_dir.'/'.$file);
  92         }
  93     }
  94 }
  95
  96 function wiki_assign_auth() {
  97     global $page, $wiki_auths;
  98     $page->assign('logged', S::logged());
  99     $page->assign('identified', S::identified());
 100     $page->assign('has_perms', S::has_perms());
 101     $page->assign('public', true);
 102     $page->assign('wiki_admin', S::has_perms() && S::identified());
 103 }
 104
 105 // cannot be in a function because pmwiki use all vars as if it was globals
 106 //function new_wiki_page() {
 107     // the wiki keword is given in the n var
 108     if ( $n = wiki_pagename() )
 109     {
 110
 111         $wiki_template = wiki_template($n);
 112         $tmpfile_exists = file_exists($wiki_template);
 113
 114         // don't recreate the tpl if it already exists
 115         if (Env::get('action') || !$tmpfile_exists)
 116         {
 117             if ($tmpfile_exists) {
 118                 wiki_clear_cache($n);
 119             }
 120
 121             // we leave pmwiki do whatever it wants and store everything
 122             ob_start();
 123             require_once($globals->spoolroot.'/'.$globals->wiki->wikidir.'/pmwiki.php');
 124
 125             $wikiAll = ob_get_clean();
 126             // the pmwiki skin we are using (almost empty) has these keywords:
 127             $i = strpos($wikiAll, "<!--/HeaderText-->");
 128             $j = strpos($wikiAll, "<!--/PageLeftFmt-->", $i);
 129
 130         }
 131         if (Env::get('action'))
 132         {
 133             // clean old tmp files
 134             wiki_clean_tmp();
 135             $page->assign('xorg_extra_header', substr($wikiAll, 0, $i));
 136             // create new tmp files with editing page from wiki engine
 137             $wiki_template = wiki_create_tmp(substr($wikiAll, $j));
 138         } else {
 139             if (!$tmpfile_exists)
 140             {
 141                 $f = fopen($wiki_template, 'w');
 142                 fputs($f, substr($wikiAll, $j));
 143                 fclose($f);
 144             }
 145         }
 146     }
 147    //return $wiki_template;
 148 //}
 149 ?>