xref: /dokuwiki/inc/actions.php (revision 8b06d178223afa83719d5719942e315c41adc596) 
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  }
57
58  //save
59  if($ACT == 'save')
60    $ACT = act_save($ACT);
61
62  //edit
63  if(($ACT == 'edit' || $ACT == 'preview') && $INFO['editable']){
64    $ACT = act_edit($ACT);
65  }else{
66    unlock($ID); //try to unlock
67  }
68
69  //handle export
70  if(substr($ACT,0,7) == 'export_')
71    $ACT = act_export($ACT);
72
73  //display some infos
74  if($ACT == 'check'){
75    check();
76    $ACT = 'show';
77  }
78
79  //handle admin tasks
80  if($ACT == 'admin'){
81    // retrieve admin plugin name from $_REQUEST['page']
82    if ($_REQUEST['page']) {
83        $pluginlist = plugin_list('admin');
84        if (in_array($_REQUEST['page'], $pluginlist)) {
85          // attempt to load the plugin
86          if ($plugin =& plugin_load('admin',$_REQUEST['page']) !== NULL)
87              $plugin->handle();
88        }
89    }
90/*
91        if($_REQUEST['page'] == 'acl'){
92            require_once(DOKU_INC.'inc/admin_acl.php');
93            admin_acl_handler();
94    }
95*/
96  }
97
98  //call template FIXME: all needed vars available?
99  header('Content-Type: text/html; charset=utf-8');
100  include(template('main.php'));
101  // output for the commands is now handled in inc/templates.php
102  // in function tpl_content()
103}
104
105/**
106 * Sanitize the action command
107 *
108 * Add all allowed commands here.
109 *
110 * @author Andreas Gohr <andi@splitbrain.org>
111 */
112function act_clean($act){
113  global $lang;
114
115  //handle localized buttons
116  if($act == $lang['btn_save']) $act = 'save';
117  if($act == $lang['btn_preview']) $act = 'preview';
118  if($act == $lang['btn_cancel']) $act = 'show';
119
120  //remove all bad chars
121  $act = strtolower($act);
122  $act = preg_replace('/[^a-z_]+/','',$act);
123
124  if($act == 'export_html') $act = 'export_xhtml';
125
126  if(array_search($act,array('login','logout','register','save','edit',
127                             'preview','search','show','check','index','revisions',
128                             'diff','recent','backlink','admin','subscribe',
129                             'unsubscribe','profile','resendpwd',)) === false
130     && substr($act,0,7) != 'export_' ) {
131    msg('Unknown command: '.htmlspecialchars($act),-1);
132    return 'show';
133  }
134  return $act;
135}
136
137/**
138 * Run permissionchecks
139 *
140 * @author Andreas Gohr <andi@splitbrain.org>
141 */
142function act_permcheck($act){
143  global $INFO;
144  global $conf;
145
146  if(in_array($act,array('save','preview','edit'))){
147    if($INFO['exists']){
148      if($act == 'edit'){
149        //the edit function will check again and do a source show
150        //when no AUTH_EDIT available
151        $permneed = AUTH_READ;
152      }else{
153        $permneed = AUTH_EDIT;
154      }
155    }else{
156      $permneed = AUTH_CREATE;
157    }
158  }elseif(in_array($act,array('login','search','recent','profile'))){
159    $permneed = AUTH_NONE;
160  }elseif($act == 'register'){
161    if ($conf['openregister']){
162      $permneed = AUTH_NONE;
163    }else{
164      $permneed = AUTH_ADMIN;
165    }
166  }elseif($act == 'admin'){
167    $permneed = AUTH_ADMIN;
168  }else{
169    $permneed = AUTH_READ;
170  }
171  if($INFO['perm'] >= $permneed) return $act;
172
173  return 'denied';
174}
175
176/**
177 * Handle 'save'
178 *
179 * Checks for spam and conflicts and saves the page.
180 * Does a redirect to show the page afterwards or
181 * returns a new action.
182 *
183 * @author Andreas Gohr <andi@splitbrain.org>
184 */
185function act_save($act){
186  global $ID;
187  global $DATE;
188  global $PRE;
189  global $TEXT;
190  global $SUF;
191  global $SUM;
192
193  //spam check
194  if(checkwordblock())
195    return 'wordblock';
196  //conflict check //FIXME use INFO
197  if($DATE != 0 && @filemtime(wikiFN($ID)) > $DATE )
198    return 'conflict';
199
200  //save it
201  saveWikiText($ID,con($PRE,$TEXT,$SUF,1),$SUM,$_REQUEST['minor']); //use pretty mode for con
202  //unlock it
203  unlock($ID);
204
205  //show it
206  session_write_close();
207  header("Location: ".wl($ID,'',true));
208  exit();
209}
210
211/**
212 * Handle 'login', 'logout'
213 *
214 * @author Andreas Gohr <andi@splitbrain.org>
215 */
216function act_auth($act){
217  global $ID;
218  global $INFO;
219
220  //already logged in?
221  if($_SERVER['REMOTE_USER'] && $act=='login')
222    return 'show';
223
224  //handle logout
225  if($act=='logout'){
226    $lockedby = checklock($ID); //page still locked?
227    if($lockedby == $_SERVER['REMOTE_USER'])
228      unlock($ID); //try to unlock
229
230    // do the logout stuff
231    auth_logoff();
232
233    // rebuild info array
234    $INFO = pageinfo();
235
236    return 'login';
237  }
238
239  return $act;
240}
241
242/**
243 * Handle 'edit', 'preview'
244 *
245 * @author Andreas Gohr <andi@splitbrain.org>
246 */
247function act_edit($act){
248  global $ID;
249
250  //check if locked by anyone - if not lock for my self
251  $lockedby = checklock($ID);
252  if($lockedby) return 'locked';
253
254  lock($ID);
255  return $act;
256}
257
258/**
259 * Handle 'edit', 'preview'
260 *
261 * @author Andreas Gohr <andi@splitbrain.org>
262 */
263function act_export($act){
264  global $ID;
265  global $REV;
266
267  // no renderer for this
268  if($act == 'export_raw'){
269    header('Content-Type: text/plain; charset=utf-8');
270    print rawWiki($ID,$REV);
271    exit;
272  }
273
274  // html export #FIXME what about the template's style?
275  if($act == 'export_xhtml'){
276    header('Content-Type: text/html; charset=utf-8');
277    ptln('<html>');
278    ptln('<head>');
279    tpl_metaheaders();
280    ptln('</head>');
281    ptln('<body>');
282    print p_wiki_xhtml($ID,$REV,false);
283    ptln('</body>');
284    ptln('</html>');
285    exit;
286  }
287
288  // try to run renderer #FIXME use cached instructions
289  $mode = substr($act,7);
290  $text = p_render($mode,p_get_instructions(rawWiki($ID,$REV)),$info);
291  if(!is_null($text)){
292    print $text;
293    exit;
294  }
295
296
297
298  return 'show';
299}
300
301/**
302 * Handle 'subscribe', 'unsubscribe'
303 *
304 * @author Steven Danz <steven-danz@kc.rr.com>
305 * @todo   localize
306 */
307function act_subscription($act){
308  global $ID;
309  global $INFO;
310  global $lang;
311
312  $file=metaFN($ID,'.mlist');
313  if ($act=='subscribe' && !$INFO['subscribed']){
314    if ($INFO['userinfo']['mail']){
315      if (io_saveFile($file,$_SERVER['REMOTE_USER']."\n",true)) {
316        $INFO['subscribed'] = true;
317        msg(sprintf($lang[$act.'_success'], $INFO['userinfo']['name'], $ID),1);
318      } else {
319        msg(sprintf($lang[$act.'_error'], $INFO['userinfo']['name'], $ID),1);
320      }
321    } else {
322      msg($lang['subscribe_noaddress']);
323    }
324  } elseif ($act=='unsubscribe' && $INFO['subscribed']){
325    if (io_deleteFromFile($file,$_SERVER['REMOTE_USER']."\n")) {
326      $INFO['subscribed'] = false;
327      msg(sprintf($lang[$act.'_success'], $INFO['userinfo']['name'], $ID),1);
328    } else {
329      msg(sprintf($lang[$act.'_error'], $INFO['userinfo']['name'], $ID),1);
330    }
331  }
332
333  return 'show';
334}
335
336//Setup VIM: ex: et ts=2 enc=utf-8 :
337