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     $keywords = explode('.', $n);
  26     $count = count($keywords);
  27     if ($count == 1)
  28         $n = $keywords[0].".".$keywords[0];
  29     else
  30         $n = $keywords[$count - 2].".".$keywords[$count - 1];
  31     global $globals;
  32     if ($wikiurl && ($urln = str_replace('.', '/', $n)) != Env::get('n') && $n != Env::get('n'))
  33         redirect($globals->relurl.'/'.$urln);
  34     $_REQUEST['n'] = $n;
  35     return $n;
  36 }
  37
  38 function wiki_work_dir() {
  39     global $globals;
  40     return realpath($globals->spoolroot.'htdocs/'.$globals->wiki->workdir);
  41 }
  42
  43 function wiki_template($n) {
  44     global $wikisite;
  45     return $tpl = wiki_work_dir().'/cache_'.$wikisite.'_'.$n.'.tpl';
  46 }
  47
  48 // several files are used for wiki :
  49 // - spool/wiki.d/PageName                           : the wiki page
  50 // - spool/wiki.d/cache_PageName.tpl                 : the template cache
  51 // - spool/templates_c/%%...%%cache_PageName.tpl.php : the PHP from Smarty
  52 function wiki_clear_cache($n) {
  53     global $page, $wikisite, $wikisites;
  54     $oldwikisite = $wikisite;
  55     foreach ($wikisites as $s) {
  56         $wikisite = $s;
  57         $tpl = wiki_template($n);
  58         @unlink($tpl);
  59         $page->clear_compiled_tpl($tpl);
  60     }
  61     $wikisite = $oldwikisite;
  62 }
  63
  64 // editing pages are not static but used templates too, so we used
  65 // temp template files containing result from wiki
  66 function wiki_create_tmp($content) {
  67     $tmpfile = tempnam(wiki_work_dir(), "temp_");
  68     $f = fopen($tmpfile, 'w');
  69     fputs($f, $content);
  70     fclose($f);
  71     return $tmpfile;
  72 }
  73
  74 function wiki_clean_tmp() {
  75     // clean old tmp files (more than one hour)
  76     $wiki_work_dir = wiki_work_dir();
  77     $dh = opendir(wiki_work_dir());
  78     $time = time();
  79     while (($file = readdir($dh)) !== false) {
  80         if (strpos($file, 'temp_') === 0) {
  81             $created = filectime($wiki_work_dir.'/'.$file);
  82             if ($time-$created > 60 * 60)
  83                 @unlink($wiki_work_dir.'/'.$file);
  84         }
  85     }
  86 }
  87
  88 function wiki_assign_auth() {
  89     global $page, $wiki_auths;
  90     $page->assign('logged', logged());
  91     $page->assign('identified', identified());
  92     $page->assign('has_perms', has_perms());
  93     $page->assign('public', true);
  94     $page->assign('wiki_admin', has_perms() && identified());
  95 }
  96
  97 // cannot be in a function because pmwiki use all vars as if it was globals
  98 //function new_wiki_page() {
  99     global $page, $globals;
 100         // the wiki keword is given in the n var
 101         if ( $n = wiki_pagename() )
 102         {
 103
 104           $wiki_template = wiki_template($n);
 105           $tmpfile_exists = file_exists($wiki_template);
 106
 107           // don't recreate the tpl if it already exists
 108           if (Env::get('action') || !$tmpfile_exists)
 109           {
 110             if ($tmpfile_exists) {
 111                wiki_clear_cache($n);
 112             }
 113
 114             // we leave pmwiki do whatever it wants and store everything
 115             ob_start();
 116             require_once($globals->spoolroot.'/'.$globals->wiki->wikidir.'/pmwiki.php');
 117
 118             $wikiAll = ob_get_clean();
 119             // the pmwiki skin we are using (almost empty) has these keywords:
 120             $i = strpos($wikiAll, "<!--/HeaderText-->");
 121             $j = strpos($wikiAll, "<!--/PageLeftFmt-->", $i);
 122
 123           }
 124           if (Env::get('action'))
 125           {
 126         // clean old tmp files
 127         wiki_clean_tmp();
 128             $page->assign('xorg_extra_header', substr($wikiAll, 0, $i));
 129             // create new tmp files with editing page from wiki engine
 130             $wiki_template = wiki_create_tmp(substr($wikiAll, $j));
 131           } else {
 132             if (!$tmpfile_exists)
 133             {
 134                 $f = fopen($wiki_template, 'w');
 135                 fputs($f, substr($wikiAll, $j));
 136                 fclose($f);
 137             }
 138           }
 139         }
 140    //return $wiki_template;
 141 //}
 142 ?>