xref: /dokuwiki/inc/actions.php (revision 11e2ce226d64ac98b82ddc93a81eea66160bcc21) 
1<?php
2/**
3 * DokuWiki Actions
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Andreas Gohr <andi@splitbrain.org>
7 */
8
9  if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../').'/');
10  require_once(DOKU_INC.'inc/template.php');
11
12
13/**
14 * Call the needed action handlers
15 *
16 * @author Andreas Gohr <andi@splitbrain.org>
17 */
18function act_dispatch(){
19  global $INFO;
20  global $ACT;
21  global $ID;
22  global $QUERY;
23  global $lang;
24  global $conf;
25
26  //sanitize $ACT
27  $ACT = act_clean($ACT);
28
29  //check if searchword was given - else just show
30  if($ACT == 'search' && empty($QUERY)){
31    $ACT = 'show';
32  }
33
34  //login stuff
35  if(in_array($ACT,array('login','logout')))
36    $ACT = act_auth($ACT);
37
38  //check if user is asking to (un)subscribe a page
39  if($ACT == 'subscribe' || $ACT == 'unsubscribe')
40    $ACT = act_subscription($ACT);
41
42  //check permissions
43  $ACT = act_permcheck($ACT);
44
45  //register
46  if($ACT == 'register' && register()){
47    $ACT = 'login';
48  }
49
50  //save
51  if($ACT == 'save')
52    $ACT = act_save($ACT);
53
54  //edit
55  if(($ACT == 'edit' || $ACT == 'preview') && $INFO['editable']){
56    $ACT = act_edit($ACT);
57  }else{
58    unlock($ID); //try to unlock
59  }
60
61  //handle export
62  if(substr($ACT,0,7) == 'export_')
63    $ACT = act_export($ACT);
64
65  //display some infos
66  if($ACT == 'check'){
67    check();
68    $ACT = 'show';
69  }
70
71  //handle admin tasks
72  if($ACT == 'admin'){
73    // retrieve admin plugin name from $_REQUEST['page']
74    if ($_REQUEST['page']) {
75        $pluginlist = plugin_list('admin');
76        if (in_array($_REQUEST['page'], $pluginlist)) {
77          // attempt to load the plugin
78          if ($plugin =& plugin_load('admin',$_REQUEST['page']) !== NULL)
79              $plugin->handle();
80        }
81    }
82/*
83        if($_REQUEST['page'] == 'acl'){
84            require_once(DOKU_INC.'inc/admin_acl.php');
85            admin_acl_handler();
86    }
87*/
88  }
89
90  //call template FIXME: all needed vars available?
91  header('Content-Type: text/html; charset=utf-8');
92  include(template('main.php'));
93  // output for the commands is now handled in inc/templates.php
94  // in function tpl_content()
95}
96
97/**
98 * Sanitize the action command
99 *
100 * Add all allowed commands here.
101 *
102 * @author Andreas Gohr <andi@splitbrain.org>
103 */
104function act_clean($act){
105  global $lang;
106
107  //handle localized buttons
108  if($act == $lang['btn_save']) $act = 'save';
109  if($act == $lang['btn_preview']) $act = 'preview';
110  if($act == $lang['btn_cancel']) $act = 'show';
111
112  //remove all bad chars
113  $act = strtolower($act);
114  $act = preg_replace('/[^a-z_]+/','',$act);
115
116  if($act == 'export_html') $act = 'export_xhtml';
117
118  if(array_search($act,array('login','logout','register','save','edit',
119                             'preview','search','show','check','index','revisions',
120                             'diff','recent','backlink','admin','subscribe',
121                             'unsubscribe',)) === false
122     && substr($act,0,7) != 'export_' ) {
123    msg('Unknown command: '.htmlspecialchars($act),-1);
124    return 'show';
125  }
126  return $act;
127}
128
129/**
130 * Run permissionchecks
131 *
132 * @author Andreas Gohr <andi@splitbrain.org>
133 */
134function act_permcheck($act){
135  global $INFO;
136  global $conf;
137
138  if(in_array($act,array('save','preview','edit'))){
139    if($INFO['exists']){
140      if($act == 'edit'){
141        //the edit function will check again and do a source show
142        //when no AUTH_EDIT available
143        $permneed = AUTH_READ;
144      }else{
145        $permneed = AUTH_EDIT;
146      }
147    }else{
148      $permneed = AUTH_CREATE;
149    }
150  }elseif(in_array($act,array('login','search','recent'))){
151    $permneed = AUTH_NONE;
152  }elseif($act == 'register'){
153    if ($conf['openregister']){
154      $permneed = AUTH_NONE;
155    }else{
156      $permneed = AUTH_ADMIN;
157    }
158  }elseif($act == 'admin'){
159    $permneed = AUTH_ADMIN;
160  }else{
161    $permneed = AUTH_READ;
162  }
163  if($INFO['perm'] >= $permneed) return $act;
164
165  return 'denied';
166}
167
168/**
169 * Handle 'save'
170 *
171 * Checks for spam and conflicts and saves the page.
172 * Does a redirect to show the page afterwards or
173 * returns a new action.
174 *
175 * @author Andreas Gohr <andi@splitbrain.org>
176 */
177function act_save($act){
178  global $ID;
179  global $DATE;
180  global $PRE;
181  global $TEXT;
182  global $SUF;
183  global $SUM;
184
185  //spam check
186  if(checkwordblock())
187    return 'wordblock';
188  //conflict check //FIXME use INFO
189  if($DATE != 0 && @filemtime(wikiFN($ID)) > $DATE )
190    return 'conflict';
191
192  //save it
193  saveWikiText($ID,con($PRE,$TEXT,$SUF,1),$SUM); //use pretty mode for con
194  //unlock it
195  unlock($ID);
196
197  //show it
198  session_write_close();
199  header("Location: ".wl($ID,'',true));
200  exit();
201}
202
203/**
204 * Handle 'login', 'logout'
205 *
206 * @author Andreas Gohr <andi@splitbrain.org>
207 */
208function act_auth($act){
209  global $ID;
210
211  //already logged in?
212  if($_SERVER['REMOTE_USER'] && $act=='login')
213    return 'show';
214
215  //handle logout
216  if($act=='logout'){
217    $lockedby = checklock($ID); //page still locked?
218    if($lockedby == $_SERVER['REMOTE_USER'])
219      unlock($ID); //try to unlock
220
221    auth_logoff();
222    return 'login';
223  }
224
225  return $act;
226}
227
228/**
229 * Handle 'edit', 'preview'
230 *
231 * @author Andreas Gohr <andi@splitbrain.org>
232 */
233function act_edit($act){
234  global $ID;
235
236  //check if locked by anyone - if not lock for my self
237  $lockedby = checklock($ID);
238  if($lockedby) return 'locked';
239
240  lock($ID);
241  return $act;
242}
243
244/**
245 * Handle 'edit', 'preview'
246 *
247 * @author Andreas Gohr <andi@splitbrain.org>
248 */
249function act_export($act){
250  global $ID;
251  global $REV;
252
253  // no renderer for this
254  if($act == 'export_raw'){
255    header('Content-Type: text/plain; charset=utf-8');
256    print rawWiki($ID,$REV);
257    exit;
258  }
259
260  // html export #FIXME what about the template's style?
261  if($act == 'export_xhtml'){
262    header('Content-Type: text/html; charset=utf-8');
263    ptln('<html>');
264    ptln('<head>');
265    tpl_metaheaders();
266    ptln('</head>');
267    ptln('<body>');
268    print p_wiki_xhtml($ID,$REV,false);
269    ptln('</body>');
270    ptln('</html>');
271    exit;
272  }
273
274  // try to run renderer #FIXME use cached instructions
275  $mode = substr($act,7);
276  $text = p_render($mode,p_get_instructions(rawWiki($ID,$REV)),$info);
277  if(!is_null($text)){
278    print $text;
279    exit;
280  }
281
282
283
284  return 'show';
285}
286
287/**
288 * Handle 'subscribe', 'unsubscribe'
289 *
290 * @author Steven Danz <steven-danz@kc.rr.com>
291 * @todo   localize
292 */
293function act_subscription($act){
294  global $ID;
295  global $INFO;
296  global $lang;
297
298  $file=metaFN($ID,'.mlist');
299  if ($act=='subscribe' && !$INFO['subscribed']){
300    if ($INFO['userinfo']['mail']){
301      if (io_saveFile($file,$_SERVER['REMOTE_USER']."\n",true)) {
302        $INFO['subscribed'] = true;
303        msg(sprintf($lang[$act.'_success'], $INFO['userinfo']['name'], $ID),1);
304      } else {
305        msg(sprintf($lang[$act.'_error'], $INFO['userinfo']['name'], $ID),1);
306      }
307    } else {
308      msg($lang['subscribe_noaddress']);
309    }
310  } elseif ($act=='unsubscribe' && $INFO['subscribed']){
311    if (io_deleteFromFile($file,$_SERVER['REMOTE_USER']."\n")) {
312      $INFO['subscribed'] = false;
313      msg(sprintf($lang[$act.'_success'], $INFO['userinfo']['name'], $ID),1);
314    } else {
315      msg(sprintf($lang[$act.'_error'], $INFO['userinfo']['name'], $ID),1);
316    }
317  }
318
319  return 'show';
320}
321
322
323//Setup VIM: ex: et ts=2 enc=utf-8 :
324