include/wiki.inc.php

   1 <?php
   2 /***************************************************************************
   3  *  Copyright (C) 2003-2008 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
  22 function wiki_pagename()
  23 {
  24     if (!Get::v('n')) {
  25         return null;
  26     }
  27
  28     $words = explode('/', trim(Get::v('n'), '/'));
  29     if (count($words) == 2) {
  30         return join('.', $words);
  31     }
  32
  33     array_unshift($words, $words[0]);
  34     $b = array_pop($words);
  35     $a = array_pop($words);
  36
  37     pl_redirect($a.'/'.$b);
  38 }
  39
  40 function wiki_filename($s)
  41 {
  42     if (@iconv('utf-8', 'utf-8', $s) == $s) {
  43         return $s;
  44     }
  45     return utf8_encode($s);
  46 }
  47
  48 function wiki_work_dir()
  49 {
  50     global $globals;
  51     return $globals->spoolroot.'/spool/wiki.d';
  52 }
  53
  54 function wiki_clear_all_cache()
  55 {
  56     system('rm -f '.wiki_work_dir().'/cache_*');
  57 }
  58
  59 function wiki_perms_options() {
  60     return array('public' => 'Public', 'logged' => 'Connecté',
  61                   'mdp' => 'Authentifié', 'admin' => 'Admin');
  62 }
  63
  64 function wiki_get_perms($n)
  65 {
  66     $file  = wiki_work_dir().'/'.wiki_filename(str_replace('/', '.', $n));
  67     $lines = explode("\n", @file_get_contents($file));
  68     foreach ($lines as $line) {
  69         @list($k, $v) = explode('=', $line, 2);
  70         if ($k == 'platal_perms') {
  71             return explode(':', $v);
  72         }
  73     }
  74     return array('logged', 'admin');
  75 }
  76
  77 function wiki_putfile($f, $s)
  78 {
  79     $fp = fopen($f, 'w');
  80     fputs($fp, $s);
  81     fclose($fp);
  82 }
  83
  84 function wiki_set_perms($n, $pr, $pw)
  85 {
  86     $file  = wiki_work_dir().'/'.wiki_filename(str_replace('/', '.', $n));
  87     if (!file_exists($file)) {
  88         return false;
  89     }
  90
  91     $p = $pr . ':' . $pw;
  92
  93     $lines = explode("\n", file_get_contents($file));
  94     foreach ($lines as $i => $line) {
  95         list($k, $v) = explode('=', $line, 2);
  96         if ($k == 'platal_perms') {
  97             $lines[$i] = 'platal_perms='.$p;
  98             wiki_putfile($file, join("\n", $lines));
  99             return true;
 100         }
 101     }
 102
 103     array_splice($lines, 1, 0, array('platal_perms='.$p));
 104     wiki_putfile($file, join("\n", $lines));
 105     return true;
 106 }
 107
 108 function wiki_may_have_perms($perm) {
 109     switch ($perm) {
 110       case 'public': return true;
 111       case 'logged': return S::logged();
 112       case 'mdp':    return S::logged();
 113       default:       return S::has_perms();
 114     }
 115 }
 116
 117 function wiki_apply_feed_perms($perm)
 118 {
 119     if ($perm == 'public') {
 120         return;
 121     }
 122
 123     require_once 'rss.inc.php';
 124     $uid = init_rss(null, Env::v('user'), Env::v('hash'));
 125     $res = XDB::query('SELECT user_id AS uid, IF (nom_usage <> \'\', nom_usage, nom) AS nom, prenom, perms
 126                          FROM auth_user_md5
 127                         WHERE user_id = {?}', $uid);
 128     if (!$res->numRows()) {
 129         exit;
 130     }
 131     $table = $res->fetchOneAssoc();
 132     $_SESSION = array_merge($_SESSION, $table, array('forlife' => Env::v('user')));
 133     $_SESSION['perms'] =& XorgSession::make_perms($_SESSION['perms']);
 134     if ($perm == 'logged' || $_SESSION['perms']->hasFlag('admin')) {
 135         return;
 136     }
 137     exit;
 138 }
 139
 140 function wiki_apply_perms($perm)
 141 {
 142     global $platal, $globals;
 143     $page =& Platal::page();
 144
 145     switch ($perm) {
 146       case 'public':
 147         return;
 148
 149       case 'logged':
 150         if (!call_user_func(array($globals->session, 'doAuthCookie'))) {
 151             $platal =  empty($GLOBALS['IS_XNET_SITE']) ? new Platal() : new Xnet();
 152             $platal->force_login($page);
 153         }
 154         return;
 155
 156       default:
 157         if (!call_user_func(array($globals->session, 'doAuth'))) {
 158             $platal = empty($GLOBALS['IS_XNET_SITE']) ? new Platal() : new Xnet();
 159             $platal->force_login($page);
 160         }
 161         if ($perm == 'admin') {
 162             check_perms();
 163         }
 164         return;
 165     }
 166 }
 167
 168 function wiki_require_page($pagename)
 169 {
 170     global $globals;
 171     $pagename_slashes = str_replace('.','/',$pagename);
 172     $pagename_dots = str_replace('/','.',$pagename);
 173     if (is_file(wiki_work_dir().'/cache_'.$pagename_dots.'.tpl')) {
 174         return;
 175     }
 176     system('wget --no-check-certificate '. escapeshellarg($globals->baseurl.'/'.$pagename_slashes) . ' -O /dev/null');
 177 }
 178
 179 function wiki_delete_page($pagename)
 180 {
 181     $pagename_dots = str_replace('/','.',$pagename);
 182     if (!strpos($pagename_dots, '.')) {
 183         return false;
 184     }
 185     $file  = wiki_work_dir().'/'.wiki_filename($pagename_dots);
 186     $cachefile = wiki_work_dir().'/cache_'.$pagename_dots.'.tpl';
 187     if (is_file($cachefile)) {
 188         unlink($cachefile);
 189     }
 190     if (!is_file($file)) {
 191         return false;
 192     }
 193     unlink($file);
 194     return true;
 195 }
 196
 197 function wiki_links_in_line($line, $groupname)
 198 {
 199     $links = array();
 200     if (preg_match_all('@\[\[([^~][^\]\|\?#]*)((\?|#)[^\]\|]+)?(\\|[^\]]+)?\]\]@', $line, $matches, PREG_OFFSET_CAPTURE)) {
 201         foreach ($matches[1] as $j => $link) if (!preg_match('@http://@', $link[0])) {
 202             $mylink = str_replace('/','.',trim($link[0]));
 203             $sup = trim(substr($matches[2][$j][0],1));
 204             $alt = trim(substr($matches[4][$j][0],1));
 205             $newlink = str_replace(' ','',ucwords($mylink));
 206             if (strpos($newlink,'.') === false) {
 207                 $newlink = $groupname.'.'.$newlink;
 208             }
 209             if (!$alt && $mylink != $newlink) {
 210                 $alt = trim($link[0]);
 211             }
 212             $links[] = array(
 213               'pos' => $matches[0][$j][1],
 214               'size' => strlen($matches[0][$j][0]),
 215               'href' => $newlink,
 216               'sup' => $sup,
 217               'alt' => $alt,
 218               'group' => substr($mylink, 0, strpos($mylink, '.')));
 219         }
 220     }
 221     return $links;
 222 }
 223
 224 function wiki_rename_page($pagename, $newname, $changeLinks = true)
 225 {
 226     $pagename_dots = str_replace('/','.',$pagename);
 227     $newname_dots = str_replace('/','.',$newname);
 228     if (!strpos($pagename_dots, '.') || !strpos($newname_dots, '.')) {
 229         return false;
 230     }
 231     $groupname = substr($pagename_dots, 0, strpos($pagename_dots,'.'));
 232     $newgroupname = substr($newname_dots, 0, strpos($pagename_dots,'.'));
 233
 234     $file  = wiki_work_dir().'/'.wiki_filename($pagename_dots);
 235     $newfile  = wiki_work_dir().'/'.wiki_filename($newname_dots);
 236     if (!is_file($file)) {
 237         // old page doesn't exist
 238         return false;
 239     }
 240     if (!rename($file, $newfile)) {
 241         // impossible to renama page
 242         return false;
 243     }
 244
 245     if (!$changeLinks) {
 246         return true;
 247     }
 248
 249     $changedLinks = 0;
 250     // change name inside this folder and ingroup links if changing group
 251     $lines = explode("\n", file_get_contents($newfile));
 252     $changed = false;
 253     foreach ($lines as $i => $line) {
 254         list($k, $v) = explode('=', $line, 2);
 255         if ($k == 'name' && $v == $pagename_dots) {
 256             $lines[$i] = 'name='.$newname_dots;
 257             $changed = true;
 258         } else if ($groupname != $newgroupname) {
 259             $links = wiki_links_in_line($line, $groupname);
 260             $newline = ''; $last = 0;
 261             foreach ($links as $link) if ($link['group'] == $groupname) {
 262                 $newline .= substr($line, $last, $link['pos']);
 263                 $newline .= '[['.$link['href'].$link['sup'].($link['alt']?(' |'.$link['alt']):'').']]';
 264                 $last = $link['pos']+$link['size'];
 265                 $changedLinks++;
 266             }
 267             if ($last != 0) {
 268                 $newline .= substr($line, $last);
 269                 $lines[$i] = $newline;
 270                 $changed = true;
 271             }
 272         }
 273     }
 274     wiki_putfile($newfile, join("\n", $lines));
 275
 276     // change wiki links in all wiki pages
 277     $endname = substr($pagename_dots, strpos($pagename_dots,'.')+1);
 278     $pages = array();
 279     exec("grep ".$endname."  ".wiki_work_dir()."/* -sc", $pages);
 280     foreach($pages as $line) {
 281         if (preg_match('%/([^/:]+):([0-9]+)$%', $line, $vals) && $vals[2] > 0) {
 282             $inpage = $vals[1];
 283             $lines = explode("\n", file_get_contents(wiki_work_dir().'/'.$inpage));
 284             $changed = false;
 285             // find all wiki links in page and change if linked to this page
 286             foreach ($lines as $i => $line) {
 287                 $links = wiki_links_in_line($line, substr($inpage, 0, strpos($inpage, '.')));
 288                 $newline = ''; $last = 0;
 289                 foreach ($links as $link) {
 290                     if ($link['href'] == $pagename_dots) {
 291                         $newline .= substr($line, $last, $link['pos']);
 292                         $newline .= '[['.$newname_dots.$link['sup'].($link['alt']?(' |'.$link['alt']):'').']]';
 293                         $last = $link['pos']+$link['size'];
 294                         $changedLinks++;
 295                     }
 296                 }
 297                 if ($last != 0) {
 298                     $newline .= substr($line, $last);
 299                     $lines[$i] = $newline;
 300                     $changed = true;
 301                 }
 302             }
 303             if ($changed)
 304             {
 305                 wiki_putfile(wiki_work_dir().'/'.$inpage, join("\n", $lines));
 306             }
 307         }
 308     }
 309     if ($changedLinks > 0) {
 310         return $changedLinks;
 311     }
 312     return true;
 313 }
 314
 315 function wiki_rename_folder($pagename, $newname, $changeLinks = true)
 316 {
 317 }
 318
 319 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
 320 ?>