includes/ProtectionForm.php

   1 <?php
   2 /**
   3  * Copyright (C) 2005 Brion Vibber <brion@pobox.com>
   4  * http://www.mediawiki.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 along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  * http://www.gnu.org/copyleft/gpl.html
  20  */
  21
  22 /**
  23  * @todo document, briefly.
  24  */
  25 class ProtectionForm {
  26         var $mRestrictions = array();
  27         var $mReason = '';
  28         var $mCascade = false;
  29         var $mExpiry = null;
  30         var $mPermErrors = array();
  31         var $mApplicableTypes = array();
  32
  33         function __construct( &$article ) {
  34                 global $wgRequest, $wgUser;
  35                 global $wgRestrictionTypes, $wgRestrictionLevels;
  36                 $this->mArticle =& $article;
  37                 $this->mTitle =& $article->mTitle;
  38                 $this->mApplicableTypes = $this->mTitle->exists() ? $wgRestrictionTypes : array('create');
  39
  40                 if( $this->mTitle ) {
  41                         $this->mTitle->loadRestrictions();
  42
  43                         foreach( $this->mApplicableTypes as $action ) {
  44                                 // Fixme: this form currently requires individual selections,
  45                                 // but the db allows multiples separated by commas.
  46                                 $this->mRestrictions[$action] = implode( '', $this->mTitle->getRestrictions( $action ) );
  47                         }
  48
  49                         $this->mCascade = $this->mTitle->areRestrictionsCascading();
  50
  51                         if ( $this->mTitle->mRestrictionsExpiry == 'infinity' ) {
  52                                 $this->mExpiry = 'infinite';
  53                         } else if ( strlen($this->mTitle->mRestrictionsExpiry) == 0 ) {
  54                                 $this->mExpiry = '';
  55                         } else {
  56                                 // FIXME: this format is not user friendly
  57                                 $this->mExpiry = wfTimestamp( TS_ISO_8601, $this->mTitle->mRestrictionsExpiry );
  58                         }
  59                 }
  60
  61                 // The form will be available in read-only to show levels.
  62                 $this->disabled = wfReadOnly() || ($this->mPermErrors = $this->mTitle->getUserPermissionsErrors('protect',$wgUser)) != array();
  63                 $this->disabledAttrib = $this->disabled
  64                         ? array( 'disabled' => 'disabled' )
  65                         : array();
  66
  67                 if( $wgRequest->wasPosted() ) {
  68                         $this->mReason = $wgRequest->getText( 'mwProtect-reason' );
  69                         $this->mCascade = $wgRequest->getBool( 'mwProtect-cascade' );
  70                         $this->mExpiry = $wgRequest->getText( 'mwProtect-expiry' );
  71
  72                         foreach( $this->mApplicableTypes as $action ) {
  73                                 $val = $wgRequest->getVal( "mwProtect-level-$action" );
  74                                 if( isset( $val ) && in_array( $val, $wgRestrictionLevels ) ) {
  75                                         //prevent users from setting levels that they cannot later unset
  76                                         if( $val == 'sysop' ) {
  77                                                 //special case, rewrite sysop to either protect and editprotected
  78                                                 if( !$wgUser->isAllowed('protect') && !$wgUser->isAllowed('editprotected') )
  79                                                         continue;
  80                                         } else {
  81                                                 if( !$wgUser->isAllowed($val) )
  82                                                         continue;
  83                                         }
  84                                         $this->mRestrictions[$action] = $val;
  85                                 }
  86                         }
  87                 }
  88         }
  89
  90         function execute() {
  91                 global $wgRequest, $wgOut;
  92                 if( $wgRequest->wasPosted() ) {
  93                         if( $this->save() ) {
  94                                 $article = new Article( $this->mTitle );
  95                                 $q = $article->isRedirect() ? 'redirect=no' : '';
  96                                 $wgOut->redirect( $this->mTitle->getFullUrl( $q ) );
  97                         }
  98                 } else {
  99                         $this->show();
 100                 }
 101         }
 102
 103         function show( $err = null ) {
 104                 global $wgOut, $wgUser;
 105
 106                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 107
 108                 if( is_null( $this->mTitle ) ||
 109                         $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 110                         $wgOut->showFatalError( wfMsg( 'badarticleerror' ) );
 111                         return;
 112                 }
 113
 114                 list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
 115
 116                 if ( "" != $err ) {
 117                         $wgOut->setSubtitle( wfMsgHtml( 'formerror' ) );
 118                         $wgOut->addHTML( "<p class='error'>{$err}</p>\n" );
 119                 }
 120
 121                 if ( $cascadeSources && count($cascadeSources) > 0 ) {
 122                         $titles = '';
 123
 124                         foreach ( $cascadeSources as $title ) {
 125                                 $titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
 126                         }
 127
 128                         $wgOut->wrapWikiMsg( "$1\n$titles", array( 'protect-cascadeon', count($cascadeSources) ) );
 129                 }
 130
 131                 $sk = $wgUser->getSkin();
 132                 $titleLink = $sk->makeLinkObj( $this->mTitle );
 133                 $wgOut->setPageTitle( wfMsg( 'protect-title', $this->mTitle->getPrefixedText() ) );
 134                 $wgOut->setSubtitle( wfMsg( 'protect-backlink', $titleLink ) );
 135
 136                 # Show an appropriate message if the user isn't allowed or able to change
 137                 # the protection settings at this time
 138                 if( $this->disabled ) {
 139                         if( wfReadOnly() ) {
 140                                 $wgOut->readOnlyPage();
 141                         } elseif( $this->mPermErrors ) {
 142                                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $this->mPermErrors ) );
 143                         }
 144                 } else {
 145                         $wgOut->addWikiMsg( 'protect-text', $this->mTitle->getPrefixedText() );
 146                 }
 147
 148                 $wgOut->addHTML( $this->buildForm() );
 149
 150                 $this->showLogExtract( $wgOut );
 151         }
 152
 153         function save() {
 154                 global $wgRequest, $wgUser, $wgOut;
 155
 156                 if( $this->disabled ) {
 157                         $this->show();
 158                         return false;
 159                 }
 160
 161                 $token = $wgRequest->getVal( 'wpEditToken' );
 162                 if( !$wgUser->matchEditToken( $token ) ) {
 163                         $this->show( wfMsg( 'sessionfailure' ) );
 164                         return false;
 165                 }
 166
 167                 if ( strlen( $this->mExpiry ) == 0 ) {
 168                         $this->mExpiry = 'infinite';
 169                 }
 170
 171                 if ( $this->mExpiry == 'infinite' || $this->mExpiry == 'indefinite' ) {
 172                         $expiry = Block::infinity();
 173                 } else {
 174                         # Convert GNU-style date, on error returns -1 for PHP <5.1 and false for PHP >=5.1
 175                         $expiry = strtotime( $this->mExpiry );
 176
 177                         if ( $expiry < 0 || $expiry === false ) {
 178                                 $this->show( wfMsg( 'protect_expiry_invalid' ) );
 179                                 return false;
 180                         }
 181
 182                         // Fixme: non-qualified absolute times are not in users specified timezone
 183                         // and there isn't notice about it in the ui
 184                         $expiry = wfTimestamp( TS_MW, $expiry );
 185
 186                         if ( $expiry < wfTimestampNow() ) {
 187                                 $this->show( wfMsg( 'protect_expiry_old' ) );
 188                                 return false;
 189                         }
 190
 191                 }
 192
 193                 # They shouldn't be able to do this anyway, but just to make sure, ensure that cascading restrictions aren't being applied
 194                 #  to a semi-protected page.
 195                 global $wgGroupPermissions;
 196
 197                 $edit_restriction = $this->mRestrictions['edit'];
 198
 199                 if ($this->mCascade && ($edit_restriction != 'protect') &&
 200                         !(isset($wgGroupPermissions[$edit_restriction]['protect']) && $wgGroupPermissions[$edit_restriction]['protect'] ) )
 201                         $this->mCascade = false;
 202
 203                 if ($this->mTitle->exists()) {
 204                         $ok = $this->mArticle->updateRestrictions( $this->mRestrictions, $this->mReason, $this->mCascade, $expiry );
 205                 } else {
 206                         $ok = $this->mTitle->updateTitleProtection( $this->mRestrictions['create'], $this->mReason, $expiry );
 207                 }
 208
 209                 if( !$ok ) {
 210                         throw new FatalError( "Unknown error at restriction save time." );
 211                 }
 212
 213                 if( $wgRequest->getCheck( 'mwProtectWatch' ) ) {
 214                         $this->mArticle->doWatch();
 215                 } elseif( $this->mTitle->userIsWatching() ) {
 216                         $this->mArticle->doUnwatch();
 217                 }
 218
 219                 return $ok;
 220         }
 221
 222         /**
 223          * Build the input form
 224          *
 225          * @return $out string HTML form
 226          */
 227         function buildForm() {
 228                 global $wgUser;
 229
 230                 $out = '';
 231                 if( !$this->disabled ) {
 232                         $out .= $this->buildScript();
 233                         // The submission needs to reenable the move permission selector
 234                         // if it's in locked mode, or some browsers won't submit the data.
 235                         $out .= Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->mTitle->getLocalUrl( 'action=protect' ), 'id' => 'mw-Protect-Form', 'onsubmit' => 'protectEnable(true)' ) ) .
 236                                 Xml::hidden( 'wpEditToken',$wgUser->editToken() );
 237                 }
 238
 239                 $out .= Xml::openElement( 'fieldset' ) .
 240                         Xml::element( 'legend', null, wfMsg( 'protect-legend' ) ) .
 241                         Xml::openElement( 'table', array( 'id' => 'mwProtectSet' ) ) .
 242                         Xml::openElement( 'tbody' ) .
 243                         "<tr>\n";
 244
 245                 foreach( $this->mRestrictions as $action => $required ) {
 246                         /* Not all languages have V_x <-> N_x relation */
 247                         $label = Xml::element( 'label',
 248                                         array( 'for' => "mwProtect-level-$action" ),
 249                                         wfMsg( 'restriction-' . $action ) );
 250                         $out .= "<th>$label</th>";
 251                 }
 252                 $out .= "</tr>
 253                         <tr>\n";
 254                 foreach( $this->mRestrictions as $action => $selected ) {
 255                         $out .= "<td>" .
 256                                         $this->buildSelector( $action, $selected ) .
 257                                 "</td>";
 258                 }
 259                 $out .= "</tr>\n";
 260
 261                 // JavaScript will add another row with a value-chaining checkbox
 262
 263                 $out .= Xml::closeElement( 'tbody' ) .
 264                         Xml::closeElement( 'table' ) .
 265                         Xml::openElement( 'table', array( 'id' => 'mw-protect-table2' ) ) .
 266                         Xml::openElement( 'tbody' );
 267
 268                 if( $this->mTitle->exists() ) {
 269                         $out .= '<tr>
 270                                         <td></td>
 271                                         <td class="mw-input">' .
 272                                                 Xml::checkLabel( wfMsg( 'protect-cascade' ), 'mwProtect-cascade', 'mwProtect-cascade', $this->mCascade, $this->disabledAttrib ) .
 273                                         "</td>
 274                                 </tr>\n";
 275                 }
 276
 277                 $attribs = array( 'id' => 'expires' ) + $this->disabledAttrib;
 278                 $out .= "<tr>
 279                                 <td class='mw-label'>" .
 280                                         Xml::label( wfMsgExt( 'protectexpiry', array( 'parseinline' ) ), 'expires' ) .
 281                                 '</td>
 282                                 <td class="mw-input">' .
 283                                         Xml::input( 'mwProtect-expiry', 60, $this->mExpiry, $attribs ) .
 284                                 '</td>
 285                         </tr>';
 286
 287                 if( !$this->disabled ) {
 288                         $id = 'mwProtect-reason';
 289                         $out .= "<tr>
 290                                         <td class='mw-label'>" .
 291                                                 Xml::label( wfMsg( 'protectcomment' ), $id ) .
 292                                         '</td>
 293                                         <td class="mw-input">' .
 294                                                 Xml::input( $id, 60, $this->mReason, array( 'type' => 'text', 'id' => $id, 'maxlength' => 255 ) ) .
 295                                         "</td>
 296                                 </tr>
 297                                 <tr>
 298                                         <td></td>
 299                                         <td class='mw-input'>" .
 300                                                 Xml::checkLabel( wfMsg( 'watchthis' ),
 301                                                         'mwProtectWatch', 'mwProtectWatch',
 302                                                         $this->mTitle->userIsWatching() || $wgUser->getOption( 'watchdefault' ) ) .
 303                                         "</td>
 304                                 </tr>
 305                                 <tr>
 306                                         <td></td>
 307                                         <td class='mw-submit'>" .
 308                                                 Xml::submitButton( wfMsg( 'confirm' ), array( 'id' => 'mw-Protect-submit' ) ) .
 309                                         "</td>
 310                                 </tr>\n";
 311                 }
 312
 313                 $out .= Xml::closeElement( 'tbody' ) .
 314                         Xml::closeElement( 'table' ) .
 315                         Xml::closeElement( 'fieldset' );
 316
 317                 if ( !$this->disabled ) {
 318                         $out .= Xml::closeElement( 'form' ) .
 319                                 $this->buildCleanupScript();
 320                 }
 321
 322                 return $out;
 323         }
 324
 325         function buildSelector( $action, $selected ) {
 326                 global $wgRestrictionLevels, $wgUser;
 327                 $id = 'mwProtect-level-' . $action;
 328                 $attribs = array(
 329                         'id' => $id,
 330                         'name' => $id,
 331                         'size' => count( $wgRestrictionLevels ),
 332                         'onchange' => 'protectLevelsUpdate(this)',
 333                         ) + $this->disabledAttrib;
 334
 335                 $out = Xml::openElement( 'select', $attribs );
 336                 foreach( $wgRestrictionLevels as $key ) {
 337                         //don't let them choose levels above their own (aka so they can still unprotect and edit the page). but only when the form isn't disabled
 338                         if( $key == 'sysop' ) {
 339                                 //special case, rewrite sysop to protect and editprotected
 340                                 if( !$wgUser->isAllowed('protect') && !$wgUser->isAllowed('editprotected') && !$this->disabled )
 341                                         continue;
 342                         } else {
 343                                 if( !$wgUser->isAllowed($key) && !$this->disabled )
 344                                         continue;
 345                         }
 346                         $out .= Xml::option( $this->getOptionLabel( $key ), $key, $key == $selected );
 347                 }
 348                 $out .= Xml::closeElement( 'select' );
 349                 return $out;
 350         }
 351
 352         /**
 353          * Prepare the label for a protection selector option
 354          *
 355          * @param string $permission Permission required
 356          * @return string
 357          */
 358         private function getOptionLabel( $permission ) {
 359                 if( $permission == '' ) {
 360                         return wfMsg( 'protect-default' );
 361                 } else {
 362                         $key = "protect-level-{$permission}";
 363                         $msg = wfMsg( $key );
 364                         if( wfEmptyMsg( $key, $msg ) )
 365                                 $msg = wfMsg( 'protect-fallback', $permission );
 366                         return $msg;
 367                 }
 368         }
 369
 370         function buildScript() {
 371                 global $wgStylePath, $wgStyleVersion;
 372                 return Xml::tags( 'script', array(
 373                         'type' => 'text/javascript',
 374                         'src' => $wgStylePath . "/common/protect.js?$wgStyleVersion" ), '' );
 375         }
 376
 377         function buildCleanupScript() {
 378                 global $wgRestrictionLevels, $wgGroupPermissions;
 379                 $script = 'var wgCascadeableLevels=';
 380                 $CascadeableLevels = array();
 381                 foreach( $wgRestrictionLevels as $key ) {
 382                         if ( (isset($wgGroupPermissions[$key]['protect']) && $wgGroupPermissions[$key]['protect']) || $key == 'protect' ) {
 383                                 $CascadeableLevels[] = "'" . Xml::escapeJsString( $key ) . "'";
 384                         }
 385                 }
 386                 $script .= "[" . implode(',',$CascadeableLevels) . "];\n";
 387                 $script .= 'protectInitialize("mwProtectSet","' . Xml::escapeJsString( wfMsg( 'protect-unchain' ) ) . '","' . count($this->mApplicableTypes) . '")';
 388                 return Xml::tags( 'script', array( 'type' => 'text/javascript' ), $script );
 389         }
 390
 391         /**
 392          * @param OutputPage $out
 393          * @access private
 394          */
 395         function showLogExtract( &$out ) {
 396                 # Show relevant lines from the protection log:
 397                 $out->addHTML( Xml::element( 'h2', null, LogPage::logName( 'protect' ) ) );
 398                 LogEventsList::showLogExtract( $out, 'protect', $this->mTitle->getPrefixedText() );
 399         }
 400 }