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  * @addtogroup SpecialPage
  25  */
  26 class ProtectionForm {
  27         var $mRestrictions = array();
  28         var $mReason = '';
  29         var $mCascade = false;
  30         var $mExpiry = null;
  31         var $mPermErrors = array();
  32         var $mApplicableTypes = array();
  33
  34         function __construct( &$article ) {
  35                 global $wgRequest, $wgUser;
  36                 global $wgRestrictionTypes, $wgRestrictionLevels;
  37                 $this->mArticle =& $article;
  38                 $this->mTitle =& $article->mTitle;
  39                 $this->mApplicableTypes = $this->mTitle->exists() ? $wgRestrictionTypes : array('create');
  40
  41                 if( $this->mTitle ) {
  42                         $this->mTitle->loadRestrictions();
  43
  44                         foreach( $this->mApplicableTypes as $action ) {
  45                                 // Fixme: this form currently requires individual selections,
  46                                 // but the db allows multiples separated by commas.
  47                                 $this->mRestrictions[$action] = implode( '', $this->mTitle->getRestrictions( $action ) );
  48                         }
  49
  50                         $this->mCascade = $this->mTitle->areRestrictionsCascading();
  51
  52                         if ( $this->mTitle->mRestrictionsExpiry == 'infinity' ) {
  53                                 $this->mExpiry = 'infinite';
  54                         } else if ( strlen($this->mTitle->mRestrictionsExpiry) == 0 ) {
  55                                 $this->mExpiry = '';
  56                         } else {
  57                                 $this->mExpiry = wfTimestamp( TS_RFC2822, $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                                         $this->mRestrictions[$action] = $val;
  76                                 }
  77                         }
  78                 }
  79         }
  80
  81         function execute() {
  82                 global $wgRequest, $wgOut;
  83                 if( $wgRequest->wasPosted() ) {
  84                         if( $this->save() ) {
  85                                 $article = new Article( $this->mTitle );
  86                                 $q = $article->isRedirect() ? 'redirect=no' : '';
  87                                 $wgOut->redirect( $this->mTitle->getFullUrl( $q ) );
  88                         }
  89                 } else {
  90                         $this->show();
  91                 }
  92         }
  93
  94         function show( $err = null ) {
  95                 global $wgOut, $wgUser;
  96
  97                 $wgOut->setRobotpolicy( 'noindex,nofollow' );
  98
  99                 if( is_null( $this->mTitle ) ||
 100                         $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 101                         $wgOut->showFatalError( wfMsg( 'badarticleerror' ) );
 102                         return;
 103                 }
 104
 105                 list( $cascadeSources, /* $restrictions */ ) = $this->mTitle->getCascadeProtectionSources();
 106
 107                 if ( "" != $err ) {
 108                         $wgOut->setSubtitle( wfMsgHtml( 'formerror' ) );
 109                         $wgOut->addHTML( "<p class='error'>{$err}</p>\n" );
 110                 }
 111
 112                 if ( $cascadeSources && count($cascadeSources) > 0 ) {
 113                         $titles = '';
 114
 115                         foreach ( $cascadeSources as $title ) {
 116                                 $titles .= '* [[:' . $title->getPrefixedText() . "]]\n";
 117                         }
 118
 119                         $wgOut->wrapWikiMsg( "$1\n$titles", array( 'protect-cascadeon', count($cascadeSources) ) );
 120                 }
 121
 122                 $sk = $wgUser->getSkin();
 123                 $titleLink = $sk->makeLinkObj( $this->mTitle );
 124                 $wgOut->setPageTitle( wfMsg( 'protect-title', $this->mTitle->getPrefixedText() ) );
 125                 $wgOut->setSubtitle( wfMsg( 'protect-backlink', $titleLink ) );
 126
 127                 # Show an appropriate message if the user isn't allowed or able to change
 128                 # the protection settings at this time
 129                 if( $this->disabled ) {
 130                         if( wfReadOnly() ) {
 131                                 $wgOut->readOnlyPage();
 132                         } elseif( $this->mPermErrors ) {
 133                                 $wgOut->addWikiText( $wgOut->formatPermissionsErrorMessage( $this->mPermErrors ) );
 134                         }
 135                 } else {
 136                         $wgOut->addWikiMsg( 'protect-text', $this->mTitle->getPrefixedText() );
 137                 }
 138
 139                 $wgOut->addHTML( $this->buildForm() );
 140
 141                 $this->showLogExtract( $wgOut );
 142         }
 143
 144         function save() {
 145                 global $wgRequest, $wgUser, $wgOut;
 146
 147                 if( $this->disabled ) {
 148                         $this->show();
 149                         return false;
 150                 }
 151
 152                 $token = $wgRequest->getVal( 'wpEditToken' );
 153                 if( !$wgUser->matchEditToken( $token ) ) {
 154                         $this->show( wfMsg( 'sessionfailure' ) );
 155                         return false;
 156                 }
 157
 158                 if ( strlen( $this->mExpiry ) == 0 ) {
 159                         $this->mExpiry = 'infinite';
 160                 }
 161
 162                 if ( $this->mExpiry == 'infinite' || $this->mExpiry == 'indefinite' ) {
 163                         $expiry = Block::infinity();
 164                 } else {
 165                         # Convert GNU-style date, on error returns -1 for PHP <5.1 and false for PHP >=5.1
 166                         $expiry = strtotime( $this->mExpiry );
 167
 168                         if ( $expiry < 0 || $expiry === false ) {
 169                                 $this->show( wfMsg( 'protect_expiry_invalid' ) );
 170                                 return false;
 171                         }
 172
 173                         $expiry = wfTimestamp( TS_MW, $expiry );
 174
 175                         if ( $expiry < wfTimestampNow() ) {
 176                                 $this->show( wfMsg( 'protect_expiry_old' ) );
 177                                 return false;
 178                         }
 179
 180                 }
 181
 182                 # They shouldn't be able to do this anyway, but just to make sure, ensure that cascading restrictions aren't being applied
 183                 #  to a semi-protected page.
 184                 global $wgGroupPermissions;
 185
 186                 $edit_restriction = $this->mRestrictions['edit'];
 187
 188                 if ($this->mCascade && ($edit_restriction != 'protect') &&
 189                         !(isset($wgGroupPermissions[$edit_restriction]['protect']) && $wgGroupPermissions[$edit_restriction]['protect'] ) )
 190                         $this->mCascade = false;
 191
 192                 if ($this->mTitle->exists()) {
 193                         $ok = $this->mArticle->updateRestrictions( $this->mRestrictions, $this->mReason, $this->mCascade, $expiry );
 194                 } else {
 195                         $ok = $this->mTitle->updateTitleProtection( $this->mRestrictions['create'], $this->mReason, $expiry );
 196                 }
 197
 198                 if( !$ok ) {
 199                         throw new FatalError( "Unknown error at restriction save time." );
 200                 }
 201
 202                 if( $wgRequest->getCheck( 'mwProtectWatch' ) ) {
 203                         $this->mArticle->doWatch();
 204                 } elseif( $this->mTitle->userIsWatching() ) {
 205                         $this->mArticle->doUnwatch();
 206                 }
 207
 208                 return $ok;
 209         }
 210
 211         /**
 212          * Build the input form
 213          *
 214          * @return $out string HTML form
 215          */
 216         function buildForm() {
 217                 global $wgUser;
 218
 219                 $out = '';
 220                 if( !$this->disabled ) {
 221                         $out .= $this->buildScript();
 222                         // The submission needs to reenable the move permission selector
 223                         // if it's in locked mode, or some browsers won't submit the data.
 224                         $out .= Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->mTitle->getLocalUrl( 'action=protect' ), 'id' => 'mw-Protect-Form', 'onsubmit' => 'protectEnable(true)' ) ) .
 225                                 Xml::hidden( 'wpEditToken',$wgUser->editToken() );
 226                 }
 227
 228                 $out .= Xml::openElement( 'fieldset' ) .
 229                         Xml::element( 'legend', null, wfMsg( 'protect-legend' ) ) .
 230                         Xml::openElement( 'table', array( 'id' => 'mwProtectSet' ) ) .
 231                         Xml::openElement( 'tbody' ) .
 232                         "<tr>\n";
 233
 234                 foreach( $this->mRestrictions as $action => $required ) {
 235                         /* Not all languages have V_x <-> N_x relation */
 236                         $label = Xml::element( 'label',
 237                                         array( 'for' => "mwProtect-level-$action" ),
 238                                         wfMsg( 'restriction-' . $action ) );
 239                         $out .= "<th>$label</th>";
 240                 }
 241                 $out .= "</tr>
 242                         <tr>\n";
 243                 foreach( $this->mRestrictions as $action => $selected ) {
 244                         $out .= "<td>" .
 245                                         $this->buildSelector( $action, $selected ) .
 246                                 "</td>";
 247                 }
 248                 $out .= "</tr>\n";
 249
 250                 // JavaScript will add another row with a value-chaining checkbox
 251
 252                 $out .= Xml::closeElement( 'tbody' ) .
 253                         Xml::closeElement( 'table' ) .
 254                         Xml::openElement( 'table', array( 'id' => 'mw-protect-table2' ) ) .
 255                         Xml::openElement( 'tbody' );
 256
 257                 global $wgEnableCascadingProtection;
 258                 if( $wgEnableCascadingProtection && $this->mTitle->exists() ) {
 259                         $out .= '<tr>
 260                                         <td></td>
 261                                         <td class="mw-input">' .
 262                                                 Xml::checkLabel( wfMsg( 'protect-cascade' ), 'mwProtect-cascade', 'mwProtect-cascade', $this->mCascade, $this->disabledAttrib ) .
 263                                         "</td>
 264                                 </tr>\n";
 265                 }
 266
 267                 $attribs = array( 'id' => 'expires' ) + $this->disabledAttrib;
 268                 $out .= "<tr>
 269                                 <td class='mw-label'>" .
 270                                         Xml::label( wfMsgExt( 'protectexpiry', array( 'parseinline' ) ), 'expires' ) .
 271                                 '</td>
 272                                 <td class="mw-input">' .
 273                                         Xml::input( 'mwProtect-expiry', 60, $this->mExpiry, $attribs ) .
 274                                 '</td>
 275                         </tr>';
 276
 277                 if( !$this->disabled ) {
 278                         $id = 'mwProtect-reason';
 279                         $out .= "<tr>
 280                                         <td class='mw-label'>" .
 281                                                 Xml::label( wfMsg( 'protectcomment' ), $id ) .
 282                                         '</td>
 283                                         <td class="mw-input">' .
 284                                                 Xml::input( $id, 60, $this->mReason, array( 'type' => 'text', 'id' => $id, 'maxlength' => 255 ) ) .
 285                                         "</td>
 286                                 </tr>
 287                                 <tr>
 288                                         <td></td>
 289                                         <td class='mw-input'>" .
 290                                                 Xml::checkLabel( wfMsg( 'watchthis' ),
 291                                                         'mwProtectWatch', 'mwProtectWatch',
 292                                                         $this->mTitle->userIsWatching() || $wgUser->getOption( 'watchdefault' ) ) .
 293                                         "</td>
 294                                 </tr>
 295                                 <tr>
 296                                         <td></td>
 297                                         <td class='mw-submit'>" .
 298                                                 Xml::submitButton( wfMsg( 'confirm' ), array( 'id' => 'mw-Protect-submit' ) ) .
 299                                         "</td>
 300                                 </tr>\n";
 301                 }
 302
 303                 $out .= Xml::closeElement( 'tbody' ) .
 304                         Xml::closeElement( 'table' ) .
 305                         Xml::closeElement( 'fieldset' );
 306
 307                 if ( !$this->disabled ) {
 308                         $out .= Xml::closeElement( 'form' ) .
 309                                 $this->buildCleanupScript();
 310                 }
 311
 312                 return $out;
 313         }
 314
 315         function buildSelector( $action, $selected ) {
 316                 global $wgRestrictionLevels;
 317                 $id = 'mwProtect-level-' . $action;
 318                 $attribs = array(
 319                         'id' => $id,
 320                         'name' => $id,
 321                         'size' => count( $wgRestrictionLevels ),
 322                         'onchange' => 'protectLevelsUpdate(this)',
 323                         ) + $this->disabledAttrib;
 324
 325                 $out = Xml::openElement( 'select', $attribs );
 326                 foreach( $wgRestrictionLevels as $key ) {
 327                         $out .= Xml::option( $this->getOptionLabel( $key ), $key, $key == $selected );
 328                 }
 329                 $out .= Xml::closeElement( 'select' );
 330                 return $out;
 331         }
 332
 333         /**
 334          * Prepare the label for a protection selector option
 335          *
 336          * @param string $permission Permission required
 337          * @return string
 338          */
 339         private function getOptionLabel( $permission ) {
 340                 if( $permission == '' ) {
 341                         return wfMsg( 'protect-default' );
 342                 } else {
 343                         $key = "protect-level-{$permission}";
 344                         $msg = wfMsg( $key );
 345                         if( wfEmptyMsg( $key, $msg ) )
 346                                 $msg = wfMsg( 'protect-fallback', $permission );
 347                         return $msg;
 348                 }
 349         }
 350
 351         function buildScript() {
 352                 global $wgStylePath, $wgStyleVersion;
 353                 return Xml::tags( 'script', array( 'type' => 'text/javascript', 'src' => htmlspecialchars( $wgStylePath . "/common/protect.js?$wgStyleVersion" ) ), '' );
 354         }
 355
 356         function buildCleanupScript() {
 357                 global $wgRestrictionLevels, $wgGroupPermissions;
 358                 $script = 'var wgCascadeableLevels=';
 359                 $CascadeableLevels = array();
 360                 foreach( $wgRestrictionLevels as $key ) {
 361                         if ( (isset($wgGroupPermissions[$key]['protect']) && $wgGroupPermissions[$key]['protect']) || $key == 'protect' ) {
 362                                 $CascadeableLevels[] = "'" . Xml::escapeJsString( $key ) . "'";
 363                         }
 364                 }
 365                 $script .= "[" . implode(',',$CascadeableLevels) . "];\n";
 366                 $script .= 'protectInitialize("mwProtectSet","' . Xml::escapeJsString( wfMsg( 'protect-unchain' ) ) . '","' . count($this->mApplicableTypes) . '")';
 367                 return Xml::tags( 'script', array( 'type' => 'text/javascript' ), $script );
 368         }
 369
 370         /**
 371          * @param OutputPage $out
 372          * @access private
 373          */
 374         function showLogExtract( &$out ) {
 375                 # Show relevant lines from the protection log:
 376                 $out->addHTML( Xml::element( 'h2', null, LogPage::logName( 'protect' ) ) );
 377                 LogEventsList::showLogExtract( $out, 'protect', $this->mTitle->getPrefixedText() );
 378         }
 379 }