includes/specials/SpecialDeletedContributions.php

   1 <?php
   2 /**
   3  * Implements Special:DeletedContributions
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Implements Special:DeletedContributions to display archived revisions
  26  * @ingroup SpecialPage
  27  */
  28
  29 class DeletedContribsPager extends IndexPager {
  30         public $mDefaultDirection = true;
  31         var $messages, $target;
  32         var $namespace = '', $mDb;
  33
  34         function __construct( $target, $namespace = false ) {
  35                 parent::__construct();
  36                 $msgs = array( 'deletionlog', 'undeleteviewlink', 'diff' );
  37                 foreach( $msgs as $msg ) {
  38                         $this->messages[$msg] = wfMsgExt( $msg, array( 'escapenoentities') );
  39                 }
  40                 $this->target = $target;
  41                 $this->namespace = $namespace;
  42                 $this->mDb = wfGetDB( DB_SLAVE, 'contributions' );
  43         }
  44
  45         function getDefaultQuery() {
  46                 $query = parent::getDefaultQuery();
  47                 $query['target'] = $this->target;
  48                 return $query;
  49         }
  50
  51         function getQueryInfo() {
  52                 global $wgUser;
  53                 list( $index, $userCond ) = $this->getUserCond();
  54                 $conds = array_merge( $userCond, $this->getNamespaceCond() );
  55                 // Paranoia: avoid brute force searches (bug 17792)
  56                 if( !$wgUser->isAllowed( 'deletedhistory' ) ) {
  57                         $conds[] = $this->mDb->bitAnd('ar_deleted',Revision::DELETED_USER) . ' = 0';
  58                 } elseif( !$wgUser->isAllowed( 'suppressrevision' ) ) {
  59                         $conds[] = $this->mDb->bitAnd('ar_deleted',Revision::SUPPRESSED_USER) .
  60                                 ' != ' . Revision::SUPPRESSED_USER;
  61                 }
  62                 return array(
  63                         'tables' => array( 'archive' ),
  64                         'fields' => array(
  65                                 'ar_rev_id', 'ar_namespace', 'ar_title', 'ar_timestamp', 'ar_comment', 'ar_minor_edit',
  66                                 'ar_user', 'ar_user_text', 'ar_deleted', 'ar_len'
  67                         ),
  68                         'conds' => $conds,
  69                         'options' => array( 'USE INDEX' => $index )
  70                 );
  71         }
  72
  73         function getUserCond() {
  74                 $condition = array();
  75
  76                 $condition['ar_user_text'] = $this->target;
  77                 $index = array( 'archive' => 'ar_usertext_timestamp' );
  78
  79                 return array( $index, $condition );
  80         }
  81
  82         function getIndexField() {
  83                 return 'ar_timestamp';
  84         }
  85
  86         function getStartBody() {
  87                 return "<ul>\n";
  88         }
  89
  90         function getEndBody() {
  91                 return "</ul>\n";
  92         }
  93
  94         function getNavigationBar() {
  95                 global $wgLang;
  96
  97                 if ( isset( $this->mNavigationBar ) ) {
  98                         return $this->mNavigationBar;
  99                 }
 100                 $fmtLimit = $wgLang->formatNum( $this->mLimit );
 101                 $linkTexts = array(
 102                         'prev' => wfMsgExt( 'pager-newer-n', array( 'escape', 'parsemag' ), $fmtLimit ),
 103                         'next' => wfMsgExt( 'pager-older-n', array( 'escape', 'parsemag' ), $fmtLimit ),
 104                         'first' => wfMsgHtml( 'histlast' ),
 105                         'last' => wfMsgHtml( 'histfirst' )
 106                 );
 107
 108                 $pagingLinks = $this->getPagingLinks( $linkTexts );
 109                 $limitLinks = $this->getLimitLinks();
 110                 $limits = $wgLang->pipeList( $limitLinks );
 111
 112                 $this->mNavigationBar = "(" . $wgLang->pipeList( array( $pagingLinks['first'], $pagingLinks['last'] ) ) . ") " .
 113                         wfMsgExt( 'viewprevnext', array( 'parsemag', 'escape', 'replaceafter' ), $pagingLinks['prev'], $pagingLinks['next'], $limits );
 114                 return $this->mNavigationBar;
 115         }
 116
 117         function getNamespaceCond() {
 118                 if ( $this->namespace !== '' ) {
 119                         return array( 'ar_namespace' => (int)$this->namespace );
 120                 } else {
 121                         return array();
 122                 }
 123         }
 124
 125         /**
 126          * Generates each row in the contributions list.
 127          *
 128          * Contributions which are marked "top" are currently on top of the history.
 129          * For these contributions, a [rollback] link is shown for users with sysop
 130          * privileges. The rollback link restores the most recent version that was not
 131          * written by the target user.
 132          *
 133          * @todo This would probably look a lot nicer in a table.
 134          */
 135         function formatRow( $row ) {
 136                 global $wgUser, $wgLang;
 137                 wfProfileIn( __METHOD__ );
 138
 139                 $sk = $this->getSkin();
 140
 141                 $rev = new Revision( array(
 142                                 'id'         => $row->ar_rev_id,
 143                                 'comment'    => $row->ar_comment,
 144                                 'user'       => $row->ar_user,
 145                                 'user_text'  => $row->ar_user_text,
 146                                 'timestamp'  => $row->ar_timestamp,
 147                                 'minor_edit' => $row->ar_minor_edit,
 148                                 'deleted'    => $row->ar_deleted,
 149                                 ) );
 150
 151                 $page = Title::makeTitle( $row->ar_namespace, $row->ar_title );
 152
 153                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 154
 155                 $logs = SpecialPage::getTitleFor( 'Log' );
 156                 $dellog = $sk->linkKnown(
 157                         $logs,
 158                         $this->messages['deletionlog'],
 159                         array(),
 160                         array(
 161                                 'type' => 'delete',
 162                                 'page' => $page->getPrefixedText()
 163                         )
 164                 );
 165
 166                 $reviewlink = $sk->linkKnown(
 167                         SpecialPage::getTitleFor( 'Undelete', $page->getPrefixedDBkey() ),
 168                         $this->messages['undeleteviewlink']
 169                 );
 170
 171                 if( $wgUser->isAllowed('deletedtext') ) {
 172                         $last = $sk->linkKnown(
 173                                 $undelete,
 174                                 $this->messages['diff'],
 175                                 array(),
 176                                 array(
 177                                         'target' => $page->getPrefixedText(),
 178                                         'timestamp' => $rev->getTimestamp(),
 179                                         'diff' => 'prev'
 180                                 )
 181                         );
 182                 } else {
 183                         $last = $this->messages['diff'];
 184                 }
 185
 186                 $comment = $sk->revComment( $rev );
 187                 $date = htmlspecialchars( $wgLang->timeanddate( $rev->getTimestamp(), true ) );
 188
 189                 if( !$wgUser->isAllowed('undelete') || !$rev->userCan(Revision::DELETED_TEXT) ) {
 190                         $link = $date; // unusable link
 191                 } else {
 192                         $link = $sk->linkKnown(
 193                                 $undelete,
 194                                 $date,
 195                                 array(),
 196                                 array(
 197                                         'target' => $page->getPrefixedText(),
 198                                         'timestamp' => $rev->getTimestamp()
 199                                 )
 200                         );
 201                 }
 202                 // Style deleted items
 203                 if( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
 204                         $link = '<span class="history-deleted">' . $link . '</span>';
 205                 }
 206
 207                 $pagelink = $sk->link( $page );
 208
 209                 if( $rev->isMinor() ) {
 210                         $mflag = ChangesList::flag( 'minor' );
 211                 } else {
 212                         $mflag = '';
 213                 }
 214
 215                 // Revision delete link
 216                 $del = Linker::getRevDeleteLink( $wgUser, $rev, $page );
 217                 if ( $del ) $del .= ' ';
 218
 219                 $tools = Html::rawElement(
 220                         'span',
 221                         array( 'class' => 'mw-deletedcontribs-tools' ),
 222                         wfMsg( 'parentheses', $wgLang->pipeList( array( $last, $dellog, $reviewlink ) ) )
 223                 );
 224
 225                 $diffOut = Linker::formatRevisionSize( $row->ar_len );
 226                 $ret = "{$del}{$link} {$tools} . . {$mflag} {$diffOut} {$pagelink} {$comment}";
 227
 228                 # Denote if username is redacted for this edit
 229                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 230                         $ret .= " <strong>" . wfMsgHtml('rev-deleted-user-contribs') . "</strong>";
 231                 }
 232
 233                 $ret = Html::rawElement( 'li', array(), $ret ) . "\n";
 234
 235                 wfProfileOut( __METHOD__ );
 236                 return $ret;
 237         }
 238
 239         /**
 240          * Get the Database object in use
 241          *
 242          * @return Database
 243          */
 244         public function getDatabase() {
 245                 return $this->mDb;
 246         }
 247 }
 248
 249 class DeletedContributionsPage extends SpecialPage {
 250         function __construct() {
 251                 parent::__construct( 'DeletedContributions', 'deletedhistory',
 252                 /*listed*/ true, /*function*/ false, /*file*/ false );
 253         }
 254
 255         /**
 256          * Special page "deleted user contributions".
 257          * Shows a list of the deleted contributions of a user.
 258          *
 259          * @return      none
 260          * @param       $par    String: (optional) user name of the user for which to show the contributions
 261          */
 262         function execute( $par ) {
 263                 global $wgUser;
 264                 $this->setHeaders();
 265
 266                 if ( !$this->userCanExecute( $wgUser ) ) {
 267                         $this->displayRestrictionError();
 268                         return;
 269                 }
 270
 271                 if( $wgUser->isBlocked() ){
 272                         throw new UserBlockedError( $wgUser->getBlock() );
 273                 }
 274
 275                 global $wgOut, $wgRequest;
 276
 277                 $wgOut->setPageTitle( wfMsgExt( 'deletedcontributions-title', array( 'parsemag' ) ) );
 278
 279                 $options = array();
 280
 281                 if ( isset( $par ) ) {
 282                         $target = $par;
 283                 } else {
 284                         $target = $wgRequest->getVal( 'target' );
 285                 }
 286
 287                 if ( !strlen( $target ) ) {
 288                         $wgOut->addHTML( $this->getForm( '' ) );
 289                         return;
 290                 }
 291
 292                 $options['limit'] = $wgRequest->getInt( 'limit', 50 );
 293                 $options['target'] = $target;
 294
 295                 $nt = Title::makeTitleSafe( NS_USER, $target );
 296                 if ( !$nt ) {
 297                         $wgOut->addHTML( $this->getForm( '' ) );
 298                         return;
 299                 }
 300                 $id = User::idFromName( $nt->getText() );
 301
 302                 $target = $nt->getText();
 303                 $wgOut->setSubtitle( $this->getSubTitle( $nt, $id ) );
 304
 305                 if ( ( $ns = $wgRequest->getVal( 'namespace', null ) ) !== null && $ns !== '' ) {
 306                         $options['namespace'] = intval( $ns );
 307                 } else {
 308                         $options['namespace'] = '';
 309                 }
 310
 311                 $wgOut->addHTML( $this->getForm( $options ) );
 312
 313                 $pager = new DeletedContribsPager( $target, $options['namespace'] );
 314                 if ( !$pager->getNumRows() ) {
 315                         $wgOut->addWikiMsg( 'nocontribs' );
 316                         return;
 317                 }
 318
 319                 # Show a message about slave lag, if applicable
 320                 if( ( $lag = $pager->getDatabase()->getLag() ) > 0 )
 321                         $wgOut->showLagWarning( $lag );
 322
 323                 $wgOut->addHTML(
 324                         '<p>' . $pager->getNavigationBar() . '</p>' .
 325                         $pager->getBody() .
 326                         '<p>' . $pager->getNavigationBar() . '</p>' );
 327
 328                 # If there were contributions, and it was a valid user or IP, show
 329                 # the appropriate "footer" message - WHOIS tools, etc.
 330                 if( $target != 'newbies' ) {
 331                         $message = IP::isIPAddress( $target )
 332                                 ? 'sp-contributions-footer-anon'
 333                                 : 'sp-contributions-footer';
 334
 335                         if( !wfMessage( $message )->isDisabled() ) {
 336                                 $wgOut->wrapWikiMsg( "<div class='mw-contributions-footer'>\n$1\n</div>", array( $message, $target ) );
 337                         }
 338                 }
 339         }
 340
 341         /**
 342          * Generates the subheading with links
 343          * @param $nt Title object for the target
 344          * @param $id Integer: User ID for the target
 345          * @return String: appropriately-escaped HTML to be output literally
 346          * @todo FIXME: Almost the same as contributionsSub in SpecialContributions.php. Could be combined.
 347          */
 348         function getSubTitle( $nt, $id ) {
 349                 global $wgLang, $wgUser, $wgOut;
 350
 351                 $sk = $this->getSkin();
 352
 353                 if ( $id === null ) {
 354                         $user = htmlspecialchars( $nt->getText() );
 355                 } else {
 356                         $user = $sk->link( $nt, htmlspecialchars( $nt->getText() ) );
 357                 }
 358                 $userObj = User::newFromName( $nt->getText(), /* check for username validity not needed */ false );
 359                 $talk = $nt->getTalkPage();
 360                 if( $talk ) {
 361                         # Talk page link
 362                         $tools[] = $sk->link( $talk, wfMsgHtml( 'sp-contributions-talk' ) );
 363                         if( ( $id !== null ) || ( $id === null && IP::isIPAddress( $nt->getText() ) ) ) {
 364                                 if( $wgUser->isAllowed( 'block' ) ) { # Block / Change block / Unblock links
 365                                         if ( $userObj->isBlocked() ) {
 366                                                 $tools[] = $sk->linkKnown( # Change block link
 367                                                         SpecialPage::getTitleFor( 'Block', $nt->getDBkey() ),
 368                                                         wfMsgHtml( 'change-blocklink' )
 369                                                 );
 370                                                 $tools[] = $sk->linkKnown( # Unblock link
 371                                                         SpecialPage::getTitleFor( 'BlockList' ),
 372                                                         wfMsgHtml( 'unblocklink' ),
 373                                                         array(),
 374                                                         array(
 375                                                                 'action' => 'unblock',
 376                                                                 'ip' => $nt->getDBkey()
 377                                                         )
 378                                                 );
 379                                         }
 380                                         else { # User is not blocked
 381                                                 $tools[] = $sk->linkKnown( # Block link
 382                                                         SpecialPage::getTitleFor( 'Block', $nt->getDBkey() ),
 383                                                         wfMsgHtml( 'blocklink' )
 384                                                 );
 385                                         }
 386                                 }
 387                                 # Block log link
 388                                 $tools[] = $sk->linkKnown(
 389                                         SpecialPage::getTitleFor( 'Log' ),
 390                                         wfMsgHtml( 'sp-contributions-blocklog' ),
 391                                         array(),
 392                                         array(
 393                                                 'type' => 'block',
 394                                                 'page' => $nt->getPrefixedText()
 395                                         )
 396                                 );
 397                         }
 398                         # Other logs link
 399                         $tools[] = $sk->linkKnown(
 400                                 SpecialPage::getTitleFor( 'Log' ),
 401                                 wfMsgHtml( 'sp-contributions-logs' ),
 402                                 array(),
 403                                 array( 'user' => $nt->getText() )
 404                         );
 405                         # Link to contributions
 406                         $tools[] = $sk->linkKnown(
 407                                 SpecialPage::getTitleFor( 'Contributions', $nt->getDBkey() ),
 408                                 wfMsgHtml( 'sp-deletedcontributions-contribs' )
 409                         );
 410
 411                         # Add a link to change user rights for privileged users
 412                         $userrightsPage = new UserrightsPage();
 413                         if( $id !== null && $userrightsPage->userCanChangeRights( User::newFromId( $id ) ) ) {
 414                                 $tools[] = $sk->linkKnown(
 415                                         SpecialPage::getTitleFor( 'Userrights', $nt->getDBkey() ),
 416                                         wfMsgHtml( 'sp-contributions-userrights' )
 417                                 );
 418                         }
 419
 420                         wfRunHooks( 'ContributionsToolLinks', array( $id, $nt, &$tools ) );
 421
 422                         $links = $wgLang->pipeList( $tools );
 423
 424                         // Show a note if the user is blocked and display the last block log entry.
 425                         if ( $userObj->isBlocked() ) {
 426                                 LogEventsList::showLogExtract(
 427                                         $wgOut,
 428                                         'block',
 429                                         $nt->getPrefixedText(),
 430                                         '',
 431                                         array(
 432                                                 'lim' => 1,
 433                                                 'showIfEmpty' => false,
 434                                                 'msgKey' => array(
 435                                                         'sp-contributions-blocked-notice',
 436                                                         $nt->getText() # Support GENDER in 'sp-contributions-blocked-notice'
 437                                                 ),
 438                                                 'offset' => '' # don't use $wgRequest parameter offset
 439                                         )
 440                                 );
 441                         }
 442                 }
 443
 444                 // Old message 'contribsub' had one parameter, but that doesn't work for
 445                 // languages that want to put the "for" bit right after $user but before
 446                 // $links.  If 'contribsub' is around, use it for reverse compatibility,
 447                 // otherwise use 'contribsub2'.
 448                 if( wfEmptyMsg( 'contribsub' ) ) {
 449                         return wfMsgHtml( 'contribsub2', $user, $links );
 450                 } else {
 451                         return wfMsgHtml( 'contribsub', "$user ($links)" );
 452                 }
 453         }
 454
 455         /**
 456          * Generates the namespace selector form with hidden attributes.
 457          * @param $options Array: the options to be included.
 458          */
 459         function getForm( $options ) {
 460                 global $wgScript;
 461
 462                 $options['title'] = SpecialPage::getTitleFor( 'DeletedContributions' )->getPrefixedText();
 463                 if ( !isset( $options['target'] ) ) {
 464                         $options['target'] = '';
 465                 } else {
 466                         $options['target'] = str_replace( '_' , ' ' , $options['target'] );
 467                 }
 468
 469                 if ( !isset( $options['namespace'] ) ) {
 470                         $options['namespace'] = '';
 471                 }
 472
 473                 if ( !isset( $options['contribs'] ) ) {
 474                         $options['contribs'] = 'user';
 475                 }
 476
 477                 if ( $options['contribs'] == 'newbie' ) {
 478                         $options['target'] = '';
 479                 }
 480
 481                 $f = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript ) );
 482
 483                 foreach ( $options as $name => $value ) {
 484                         if ( in_array( $name, array( 'namespace', 'target', 'contribs' ) ) ) {
 485                                 continue;
 486                         }
 487                         $f .= "\t" . Html::hidden( $name, $value ) . "\n";
 488                 }
 489
 490                 $f .=  Xml::openElement( 'fieldset' ) .
 491                         Xml::element( 'legend', array(), wfMsg( 'sp-contributions-search' ) ) .
 492                         Xml::tags( 'label', array( 'for' => 'target' ), wfMsgExt( 'sp-contributions-username', 'parseinline' ) ) . ' ' .
 493                         Html::input( 'target', $options['target'], 'text', array(
 494                                 'size' => '20',
 495                                 'required' => ''
 496                         ) + ( $options['target'] ? array() : array( 'autofocus' ) ) ) . ' '.
 497                         Xml::label( wfMsg( 'namespace' ), 'namespace' ) . ' ' .
 498                         Xml::namespaceSelector( $options['namespace'], '' ) . ' ' .
 499                         Xml::submitButton( wfMsg( 'sp-contributions-submit' ) ) .
 500                         Xml::closeElement( 'fieldset' ) .
 501                         Xml::closeElement( 'form' );
 502                 return $f;
 503         }
 504 }