xref: /dokuwiki/inc/actions.php (revision f7284726cf0d9bf0b88b4afa25ecd92d5b98caf6) 
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    $ACT = 'login';
48  }
49
50  if ($ACT == 'resendpwd' && act_resendpwd()) {
51    $ACT = 'login';
52  }
53
54  //update user profile
55  if (($ACT == 'profile') && updateprofile()) {
56    msg($lang['profchanged'],1);
57    $ACT = 'show';
58  }
59
60  //save
61  if($ACT == 'save')
62    $ACT = act_save($ACT);
63
64  //edit
65  if(($ACT == 'edit' || $ACT == 'preview') && $INFO['editable']){
66    $ACT = act_edit($ACT);
67  }else{
68    unlock($ID); //try to unlock
69  }
70
71  //handle export
72  if(substr($ACT,0,7) == 'export_')
73    $ACT = act_export($ACT);
74
75  //display some infos
76  if($ACT == 'check'){
77    check();
78    $ACT = 'show';
79  }
80
81  //handle admin tasks
82  if($ACT == 'admin'){
83    // retrieve admin plugin name from $_REQUEST['page']
84    if ($_REQUEST['page']) {
85        $pluginlist = plugin_list('admin');
86        if (in_array($_REQUEST['page'], $pluginlist)) {
87          // attempt to load the plugin
88          if ($plugin =& plugin_load('admin',$_REQUEST['page']) !== NULL)
89              $plugin->handle();
90        }
91    }
92/*
93        if($_REQUEST['page'] == 'acl'){
94            require_once(DOKU_INC.'inc/admin_acl.php');
95            admin_acl_handler();
96    }
97*/
98  }
99
100  //call template FIXME: all needed vars available?
101  header('Content-Type: text/html; charset=utf-8');
102  include(template('main.php'));
103  // output for the commands is now handled in inc/templates.php
104  // in function tpl_content()
105}
106
107/**
108 * Sanitize the action command
109 *
110 * Add all allowed commands here.
111 *
112 * @author Andreas Gohr <andi@splitbrain.org>
113 */
114function act_clean($act){
115  global $lang;
116
117  //handle localized buttons
118  if($act == $lang['btn_save']) $act = 'save';
119  if($act == $lang['btn_preview']) $act = 'preview';
120  if($act == $lang['btn_cancel']) $act = 'show';
121
122  //remove all bad chars
123  $act = strtolower($act);
124  $act = preg_replace('/[^a-z_]+/','',$act);
125
126  if($act == 'export_html') $act = 'export_xhtml';
127
128  if(array_search($act,array('login','logout','register','save','edit',
129                             'preview','search','show','check','index','revisions',
130                             'diff','recent','backlink','admin','subscribe',
131                             'unsubscribe','profile','resendpwd',)) === false
132     && substr($act,0,7) != 'export_' ) {
133    msg('Unknown command: '.htmlspecialchars($act),-1);
134    return 'show';
135  }
136  return $act;
137}
138
139/**
140 * Run permissionchecks
141 *
142 * @author Andreas Gohr <andi@splitbrain.org>
143 */
144function act_permcheck($act){
145  global $INFO;
146  global $conf;
147
148  if(in_array($act,array('save','preview','edit'))){
149    if($INFO['exists']){
150      if($act == 'edit'){
151        //the edit function will check again and do a source show
152        //when no AUTH_EDIT available
153        $permneed = AUTH_READ;
154      }else{
155        $permneed = AUTH_EDIT;
156      }
157    }else{
158      $permneed = AUTH_CREATE;
159    }
160  }elseif(in_array($act,array('login','search','recent','profile'))){
161    $permneed = AUTH_NONE;
162  }elseif($act == 'register'){
163    if ($conf['openregister']){
164      $permneed = AUTH_NONE;
165    }else{
166      $permneed = AUTH_ADMIN;
167    }
168  }elseif($act == 'admin'){
169    $permneed = AUTH_ADMIN;
170  }else{
171    $permneed = AUTH_READ;
172  }
173  if($INFO['perm'] >= $permneed) return $act;
174
175  return 'denied';
176}
177
178/**
179 * Handle 'save'
180 *
181 * Checks for spam and conflicts and saves the page.
182 * Does a redirect to show the page afterwards or
183 * returns a new action.
184 *
185 * @author Andreas Gohr <andi@splitbrain.org>
186 */
187function act_save($act){
188  global $ID;
189  global $DATE;
190  global $PRE;
191  global $TEXT;
192  global $SUF;
193  global $SUM;
194
195  //spam check
196  if(checkwordblock())
197    return 'wordblock';
198  //conflict check //FIXME use INFO
199  if($DATE != 0 && @filemtime(wikiFN($ID)) > $DATE )
200    return 'conflict';
201
202  //save it
203  saveWikiText($ID,con($PRE,$TEXT,$SUF,1),$SUM,$_REQUEST['minor']); //use pretty mode for con
204  //unlock it
205  unlock($ID);
206
207  //show it
208  session_write_close();
209  header("Location: ".wl($ID,'',true));
210  exit();
211}
212
213/**
214 * Handle 'login', 'logout'
215 *
216 * @author Andreas Gohr <andi@splitbrain.org>
217 */
218function act_auth($act){
219  global $ID;
220  global $INFO;
221
222  //already logged in?
223  if($_SERVER['REMOTE_USER'] && $act=='login')
224    return 'show';
225
226  //handle logout
227  if($act=='logout'){
228    $lockedby = checklock($ID); //page still locked?
229    if($lockedby == $_SERVER['REMOTE_USER'])
230      unlock($ID); //try to unlock
231
232    // do the logout stuff
233    auth_logoff();
234
235    // rebuild info array
236    $INFO = pageinfo();
237
238    return 'login';
239  }
240
241  return $act;
242}
243
244/**
245 * Handle 'edit', 'preview'
246 *
247 * @author Andreas Gohr <andi@splitbrain.org>
248 */
249function act_edit($act){
250  global $ID;
251
252  //check if locked by anyone - if not lock for my self
253  $lockedby = checklock($ID);
254  if($lockedby) return 'locked';
255
256  lock($ID);
257  return $act;
258}
259
260/**
261 * Handle 'edit', 'preview'
262 *
263 * @author Andreas Gohr <andi@splitbrain.org>
264 */
265function act_export($act){
266  global $ID;
267  global $REV;
268
269  // no renderer for this
270  if($act == 'export_raw'){
271    header('Content-Type: text/plain; charset=utf-8');
272    print rawWiki($ID,$REV);
273    exit;
274  }
275
276  // html export #FIXME what about the template's style?
277  if($act == 'export_xhtml'){
278    header('Content-Type: text/html; charset=utf-8');
279    ptln('<html>');
280    ptln('<head>');
281    tpl_metaheaders();
282    ptln('</head>');
283    ptln('<body>');
284    print p_wiki_xhtml($ID,$REV,false);
285    ptln('</body>');
286    ptln('</html>');
287    exit;
288  }
289
290  // try to run renderer #FIXME use cached instructions
291  $mode = substr($act,7);
292  $text = p_render($mode,p_get_instructions(rawWiki($ID,$REV)),$info);
293  if(!is_null($text)){
294    print $text;
295    exit;
296  }
297
298
299
300  return 'show';
301}
302
303/**
304 * Handle 'subscribe', 'unsubscribe'
305 *
306 * @author Steven Danz <steven-danz@kc.rr.com>
307 * @todo   localize
308 */
309function act_subscription($act){
310  global $ID;
311  global $INFO;
312  global $lang;
313
314  $file=metaFN($ID,'.mlist');
315  if ($act=='subscribe' && !$INFO['subscribed']){
316    if ($INFO['userinfo']['mail']){
317      if (io_saveFile($file,$_SERVER['REMOTE_USER']."\n",true)) {
318        $INFO['subscribed'] = true;
319        msg(sprintf($lang[$act.'_success'], $INFO['userinfo']['name'], $ID),1);
320      } else {
321        msg(sprintf($lang[$act.'_error'], $INFO['userinfo']['name'], $ID),1);
322      }
323    } else {
324      msg($lang['subscribe_noaddress']);
325    }
326  } elseif ($act=='unsubscribe' && $INFO['subscribed']){
327    if (io_deleteFromFile($file,$_SERVER['REMOTE_USER']."\n")) {
328      $INFO['subscribed'] = false;
329      msg(sprintf($lang[$act.'_success'], $INFO['userinfo']['name'], $ID),1);
330    } else {
331      msg(sprintf($lang[$act.'_error'], $INFO['userinfo']['name'], $ID),1);
332    }
333  }
334
335  return 'show';
336}
337
338//Setup VIM: ex: et ts=2 enc=utf-8 :
339