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