includes/Article.php

   1 <?
   2 # Class representing a Wikipedia article and history.
   3 # See design.doc for an overview.
   4
   5 class Article {
   6         /* private */ var $mContent, $mContentLoaded;
   7         /* private */ var $mUser, $mTimestamp, $mUserText;
   8         /* private */ var $mCounter, $mComment, $mCountAdjustment;
   9         /* private */ var $mMinorEdit, $mRedirectedFrom;
  10         /* private */ var $mTouched, $mFileCache;
  11
  12         function Article() { $this->clear(); }
  13
  14         /* private */ function clear()
  15         {
  16                 $this->mContentLoaded = false;
  17                 $this->mUser = $this->mCounter = -1; # Not loaded
  18                 $this->mRedirectedFrom = $this->mUserText =
  19                 $this->mTimestamp = $this->mComment = $this->mFileCache = "";
  20                 $this->mCountAdjustment = 0;
  21                 $this->mTouched = "19700101000000";
  22         }
  23
  24         /* static */ function newFromID( $newid )
  25         {
  26                 global $wgOut, $wgTitle, $wgArticle;
  27                 $a = new Article();
  28                 $n = Article::nameOf( $newid );
  29
  30                 $wgTitle = Title::newFromDBkey( $n );
  31                 $wgTitle->resetArticleID( $newid );
  32
  33                 return $a;
  34         }
  35
  36         /* static */ function nameOf( $id )
  37         {
  38                 $sql = "SELECT cur_namespace,cur_title FROM cur WHERE " .
  39                   "cur_id={$id}";
  40                 $res = wfQuery( $sql, "Article::nameOf" );
  41                 if ( 0 == wfNumRows( $res ) ) { return NULL; }
  42
  43                 $s = wfFetchObject( $res );
  44                 $n = Title::makeName( $s->cur_namespace, $s->cur_title );
  45                 return $n;
  46         }
  47
  48         # Note that getContent/loadContent may follow redirects if
  49         # not told otherwise, and so may cause a change to wgTitle.
  50
  51         function getContent( $noredir = false )
  52         {
  53                 global $action,$wgTitle; # From query string
  54                 wfProfileIn( "Article::getContent" );
  55
  56                 if ( 0 == $this->getID() ) {
  57                         if ( "edit" == $action ) {
  58
  59                                 global $wgTitle;
  60                                 return ""; # was "newarticletext", now moved above the box)
  61
  62
  63                         }
  64                         wfProfileOut();
  65                         return wfMsg( "noarticletext" );
  66                 } else {
  67                         $this->loadContent( $noredir );
  68                         wfProfileOut();
  69
  70                         if(
  71                                 # check if we're displaying a [[User talk:x.x.x.x]] anonymous talk page
  72                                 ( $wgTitle->getNamespace() == Namespace::getTalk( Namespace::getUser()) ) &&
  73                                   preg_match("/^\d{1,3}\.\d{1,3}.\d{1,3}\.\d{1,3}$/",$wgTitle->getText()) &&
  74                                   $action=="view"
  75                                 )
  76                                 {
  77                                 return $this->mContent . "\n" .wfMsg("anontalkpagetext"); }
  78                         else {
  79                                 return $this->mContent;
  80                         }
  81                 }
  82         }
  83
  84         function loadContent( $noredir = false )
  85         {
  86                 global $wgOut, $wgTitle;
  87                 global $oldid, $redirect; # From query
  88
  89                 if ( $this->mContentLoaded ) return;
  90                 $fname = "Article::loadContent";
  91
  92                 # Pre-fill content with error message so that if something
  93                 # fails we'll have something telling us what we intended.
  94
  95                 $t = $wgTitle->getPrefixedText();
  96                 if ( $oldid ) { $t .= ",oldid={$oldid}"; }
  97                 if ( $redirect ) { $t .= ",redirect={$redirect}"; }
  98                 $this->mContent = str_replace( "$1", $t, wfMsg( "missingarticle" ) );
  99
 100                 if ( ! $oldid ) {       # Retrieve current version
 101                         $id = $this->getID();
 102                         if ( 0 == $id ) return;
 103
 104                         $sql = "SELECT " .
 105                           "cur_text,cur_timestamp,cur_user,cur_counter,cur_restrictions,cur_touched " .
 106                           "FROM cur WHERE cur_id={$id}";
 107                         $res = wfQuery( $sql, $fname );
 108                         if ( 0 == wfNumRows( $res ) ) { return; }
 109
 110                         $s = wfFetchObject( $res );
 111
 112                         # If we got a redirect, follow it (unless we've been told
 113                         # not to by either the function parameter or the query
 114
 115                         if ( ( "no" != $redirect ) && ( false == $noredir ) &&
 116                           ( preg_match( "/^#redirect/i", $s->cur_text ) ) ) {
 117                                 if ( preg_match( "/\\[\\[([^\\]\\|]+)[\\]\\|]/",
 118                                   $s->cur_text, $m ) ) {
 119                                         $rt = Title::newFromText( $m[1] );
 120
 121                                         # Gotta hand redirects to special pages differently:
 122                                         # Fill the HTTP response "Location" header and ignore
 123                                         # the rest of the page we're on.
 124
 125                                         if ( $rt->getInterwiki() != "" ) {
 126                                                 $wgOut->redirect( $rt->getFullURL() ) ;
 127                                                 return;
 128                                         }
 129                                         if ( $rt->getNamespace() == Namespace::getSpecial() ) {
 130                                                 $wgOut->redirect( wfLocalUrl(
 131                                                   $rt->getPrefixedURL() ) );
 132                                                 return;
 133                                         }
 134                                         $rid = $rt->getArticleID();
 135                                         if ( 0 != $rid ) {
 136                                                 $sql = "SELECT cur_text,cur_timestamp,cur_user," .
 137                                                   "cur_counter,cur_touched FROM cur WHERE cur_id={$rid}";
 138                                                 $res = wfQuery( $sql, $fname );
 139
 140                                                 if ( 0 != wfNumRows( $res ) ) {
 141                                                         $this->mRedirectedFrom = $wgTitle->getPrefixedText();
 142                                                         $wgTitle = $rt;
 143                                                         $s = wfFetchObject( $res );
 144                                                 }
 145                                         }
 146                                 }
 147                         }
 148                         $this->mContent = $s->cur_text;
 149                         $this->mUser = $s->cur_user;
 150                         $this->mCounter = $s->cur_counter;
 151                         $this->mTimestamp = $s->cur_timestamp;
 152                         $this->mTouched = $s->cur_touched;
 153                         $wgTitle->mRestrictions = explode( ",", trim( $s->cur_restrictions ) );
 154                         $wgTitle->mRestrictionsLoaded = true;
 155                         wfFreeResult( $res );
 156                 } else { # oldid set, retrieve historical version
 157                         $sql = "SELECT old_text,old_timestamp,old_user FROM old " .
 158                           "WHERE old_id={$oldid}";
 159                         $res = wfQuery( $sql, $fname );
 160                         if ( 0 == wfNumRows( $res ) ) { return; }
 161
 162                         $s = wfFetchObject( $res );
 163                         $this->mContent = $s->old_text;
 164                         $this->mUser = $s->old_user;
 165                         $this->mCounter = 0;
 166                         $this->mTimestamp = $s->old_timestamp;
 167                         wfFreeResult( $res );
 168                 }
 169                 $this->mContentLoaded = true;
 170         }
 171
 172         function getID() { global $wgTitle; return $wgTitle->getArticleID(); }
 173
 174         function getCount()
 175         {
 176                 if ( -1 == $this->mCounter ) {
 177                         $id = $this->getID();
 178                         $this->mCounter = wfGetSQL( "cur", "cur_counter", "cur_id={$id}" );
 179                 }
 180                 return $this->mCounter;
 181         }
 182
 183         # Would the given text make this article a "good" article (i.e.,
 184         # suitable for including in the article count)?
 185
 186         function isCountable( $text )
 187         {
 188                 global $wgTitle, $wgUseCommaCount;
 189
 190                 if ( 0 != $wgTitle->getNamespace() ) { return 0; }
 191                 if ( preg_match( "/^#redirect/i", $text ) ) { return 0; }
 192                 $token = ($wgUseCommaCount ? "," : "[[" );
 193                 if ( false === strstr( $text, $token ) ) { return 0; }
 194                 return 1;
 195         }
 196
 197         # Load the field related to the last edit time of the article.
 198         # This isn't necessary for all uses, so it's only done if needed.
 199
 200         /* private */ function loadLastEdit()
 201         {
 202                 global $wgOut;
 203                 if ( -1 != $this->mUser ) return;
 204
 205                 $sql = "SELECT cur_user,cur_user_text,cur_timestamp," .
 206                   "cur_comment,cur_minor_edit FROM cur WHERE " .
 207                   "cur_id=" . $this->getID();
 208                 $res = wfQuery( $sql, "Article::loadLastEdit" );
 209
 210                 if ( wfNumRows( $res ) > 0 ) {
 211                         $s = wfFetchObject( $res );
 212                         $this->mUser = $s->cur_user;
 213                         $this->mUserText = $s->cur_user_text;
 214                         $this->mTimestamp = $s->cur_timestamp;
 215                         $this->mComment = $s->cur_comment;
 216                         $this->mMinorEdit = $s->cur_minor_edit;
 217                 }
 218         }
 219
 220         function getTimestamp()
 221         {
 222                 $this->loadLastEdit();
 223                 return $this->mTimestamp;
 224         }
 225
 226         function getUser()
 227         {
 228                 $this->loadLastEdit();
 229                 return $this->mUser;
 230         }
 231
 232         function getUserText()
 233         {
 234                 $this->loadLastEdit();
 235                 return $this->mUserText;
 236         }
 237
 238         function getComment()
 239         {
 240                 $this->loadLastEdit();
 241                 return $this->mComment;
 242         }
 243
 244         function getMinorEdit()
 245         {
 246                 $this->loadLastEdit();
 247                 return $this->mMinorEdit;
 248         }
 249
 250         # This is the default action of the script: just view the page of
 251         # the given title.
 252
 253         function view()
 254         {
 255                 global $wgUser, $wgOut, $wgTitle, $wgLang;
 256                 global $oldid, $diff; # From query
 257                 global $wgLinkCache;
 258                 wfProfileIn( "Article::view" );
 259
 260                 $wgOut->setArticleFlag( true );
 261                 $wgOut->setRobotpolicy( "index,follow" );
 262
 263                 # If we got diff and oldid in the query, we want to see a
 264                 # diff page instead of the article.
 265
 266                 if ( isset( $diff ) ) {
 267                         $wgOut->setPageTitle( $wgTitle->getPrefixedText() );
 268                         $de = new DifferenceEngine( $oldid, $diff );
 269                         $de->showDiffPage();
 270                         wfProfileOut();
 271                         return;
 272                 }
 273                 $text = $this->getContent(); # May change wgTitle!
 274                 $wgOut->setPageTitle( $wgTitle->getPrefixedText() );
 275                 $wgOut->setHTMLTitle( $wgTitle->getPrefixedText() .
 276                   " - " . wfMsg( "wikititlesuffix" ) );
 277
 278                 # We're looking at an old revision
 279
 280                 if ( $oldid ) {
 281                         $this->setOldSubtitle();
 282                         $wgOut->setRobotpolicy( "noindex,follow" );
 283                 }
 284                 if ( "" != $this->mRedirectedFrom ) {
 285                         $sk = $wgUser->getSkin();
 286                         $redir = $sk->makeKnownLink( $this->mRedirectedFrom, "",
 287                           "redirect=no" );
 288                         $s = str_replace( "$1", $redir, wfMsg( "redirectedfrom" ) );
 289                         $wgOut->setSubtitle( $s );
 290                 }
 291                 $wgOut->checkLastModified( $this->mTouched );
 292                 $this->tryFileCache();
 293                 $wgLinkCache->preFill( $wgTitle );
 294                 $wgOut->addWikiText( $text );
 295
 296                 # If the article we've just shown is in the "Image" namespace,
 297                 # follow it with the history list and link list for the image
 298                 # it describes.
 299
 300                 if ( Namespace::getImage() == $wgTitle->getNamespace() ) {
 301                         $this->imageHistory();
 302                         $this->imageLinks();
 303                 }
 304                 $this->viewUpdates();
 305                 wfProfileOut();
 306         }
 307
 308         # This is the function that gets called for "action=edit".
 309
 310         function edit()
 311         {
 312                 global $wgOut, $wgUser, $wgTitle;
 313                 global $wpTextbox1, $wpSummary, $wpSave, $wpPreview;
 314                 global $wpMinoredit, $wpEdittime, $wpTextbox2;
 315
 316                 $fields = array( "wpTextbox1", "wpSummary", "wpTextbox2" );
 317                 wfCleanFormFields( $fields );
 318
 319                 if ( ! $wgTitle->userCanEdit() ) {
 320                         $this->view();
 321                         return;
 322                 }
 323                 if ( $wgUser->isBlocked() ) {
 324                         $this->blockedIPpage();
 325                         return;
 326                 }
 327                 if ( wfReadOnly() ) {
 328                         if( isset( $wpSave ) or isset( $wpPreview ) ) {
 329                                 $this->editForm( "preview" );
 330                         } else {
 331                                 $wgOut->readOnlyPage();
 332                         }
 333                         return;
 334                 }
 335                 if ( $_SERVER['REQUEST_METHOD'] != "POST" ) unset( $wpSave );
 336                 if ( isset( $wpSave ) ) {
 337                         $this->editForm( "save" );
 338                 } else if ( isset( $wpPreview ) ) {
 339                         $this->editForm( "preview" );
 340                 } else { # First time through
 341                         $this->editForm( "initial" );
 342                 }
 343         }
 344
 345         # Since there is only one text field on the edit form,
 346         # pressing <enter> will cause the form to be submitted, but
 347         # the submit button value won't appear in the query, so we
 348         # Fake it here before going back to edit().  This is kind of
 349         # ugly, but it helps some old URLs to still work.
 350
 351         function submit()
 352         {
 353                 global $wpSave, $wpPreview;
 354                 if ( ! isset( $wpPreview ) ) { $wpSave = 1; }
 355
 356                 $this->edit();
 357         }
 358
 359         # The edit form is self-submitting, so that when things like
 360         # preview and edit conflicts occur, we get the same form back
 361         # with the extra stuff added.  Only when the final submission
 362         # is made and all is well do we actually save and redirect to
 363         # the newly-edited page.
 364
 365         function editForm( $formtype )
 366         {
 367                 global $wgOut, $wgUser, $wgTitle;
 368                 global $wpTextbox1, $wpSummary, $wpWatchthis;
 369                 global $wpSave, $wpPreview;
 370                 global $wpMinoredit, $wpEdittime, $wpTextbox2;
 371                 global $oldid, $redirect;
 372                 global $wgLang;
 373
 374                 $sk = $wgUser->getSkin();
 375                 $isConflict = false;
 376                 $wpTextbox1 = rtrim ( $wpTextbox1 ) ; # To avoid text getting longer on each preview
 377
 378                 if(!$wgTitle->getArticleID()) { # new article
 379
 380                         $wgOut->addWikiText(wfmsg("newarticletext"));
 381
 382                 }
 383
 384                 # Attempt submission here.  This will check for edit conflicts,
 385                 # and redundantly check for locked database, blocked IPs, etc.
 386                 # that edit() already checked just in case someone tries to sneak
 387                 # in the back door with a hand-edited submission URL.
 388
 389                 if ( "save" == $formtype ) {
 390                         if ( $wgUser->isBlocked() ) {
 391                                 $this->blockedIPpage();
 392                                 return;
 393                         }
 394                         if ( wfReadOnly() ) {
 395                                 $wgOut->readOnlyPage();
 396                                 return;
 397                         }
 398                         # If article is new, insert it.
 399
 400                         $aid = $wgTitle->getArticleID();
 401                         if ( 0 == $aid ) {
 402                                 # we need to strip Windoze linebreaks because some browsers
 403                                 # append them and the string comparison fails
 404                                 if ( ( "" == $wpTextbox1 ) ||
 405                                   ( wfMsg( "newarticletext" ) == rtrim( preg_replace("/\r/","",$wpTextbox1) ) ) ) {
 406                                         $wgOut->redirect(  wfLocalUrl(
 407                                           $wgTitle->getPrefixedURL() ) );
 408                                         return;
 409                                 }
 410                                 $this->mCountAdjustment = $this->isCountable( $wpTextbox1 );
 411                                 $this->insertNewArticle( $wpTextbox1, $wpSummary, $wpMinoredit, $wpWatchthis );
 412                                 return;
 413                         }
 414                         # Article exists. Check for edit conflict.
 415
 416                         $this->clear(); # Force reload of dates, etc.
 417                         if ( $this->getTimestamp() != $wpEdittime ) { $isConflict = true; }
 418                         $u = $wgUser->getID();
 419
 420                         # Supress edit conflict with self
 421
 422                         if ( ( 0 != $u ) && ( $this->getUser() == $u ) ) {
 423                                 $isConflict = false;
 424                         }
 425                         if ( ! $isConflict ) {
 426                                 # All's well: update the article here
 427                                 $this->updateArticle( $wpTextbox1, $wpSummary, $wpMinoredit, $wpWatchthis );
 428                                 return;
 429                         }
 430                 }
 431                 # First time through: get contents, set time for conflict
 432                 # checking, etc.
 433
 434                 if ( "initial" == $formtype ) {
 435                         $wpEdittime = $this->getTimestamp();
 436                         $wpTextbox1 = $this->getContent();
 437                         $wpSummary = "";
 438                 }
 439                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 440                 $wgOut->setArticleFlag( false );
 441
 442                 if ( $isConflict ) {
 443                         $s = str_replace( "$1", $wgTitle->getPrefixedText(),
 444                           wfMsg( "editconflict" ) );
 445                         $wgOut->setPageTitle( $s );
 446                         $wgOut->addHTML( wfMsg( "explainconflict" ) );
 447
 448                         $wpTextbox2 = $wpTextbox1;
 449                         $wpTextbox1 = $this->getContent();
 450                         $wpEdittime = $this->getTimestamp();
 451                 } else {
 452                         $s = str_replace( "$1", $wgTitle->getPrefixedText(),
 453                           wfMsg( "editing" ) );
 454                         $wgOut->setPageTitle( $s );
 455                         if ( $oldid ) {
 456                                 $this->setOldSubtitle();
 457                                 $wgOut->addHTML( wfMsg( "editingold" ) );
 458                         }
 459                 }
 460
 461                 if( wfReadOnly() ) {
 462                         $wgOut->addHTML( "<strong>" .
 463                                 wfMsg( "readonlywarning" ) .
 464                                 "</strong>" );
 465                 }
 466                 if( $wgTitle->isProtected() ) {
 467                         $wgOut->addHTML( "<strong>" . wfMsg( "protectedpagewarning" ) .
 468                           "</strong><br />\n" );
 469                 }
 470
 471                 $kblength = (int)(strlen( $wpTextbox1 ) / 1024);
 472                 if( $kblength > 29 ) {
 473                         $wgOut->addHTML( "<strong>" .
 474                                 str_replace( '$1', $kblength , wfMsg( "longpagewarning" ) )
 475                                 . "</strong>" );
 476                 }
 477
 478                 $rows = $wgUser->getOption( "rows" );
 479                 $cols = $wgUser->getOption( "cols" );
 480
 481                 $ew = $wgUser->getOption( "editwidth" );
 482                 if ( $ew ) $ew = " style=\"width:100%\"";
 483                 else $ew = "" ;
 484
 485                 $q = "action=submit";
 486                 if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 487                 $action = wfEscapeHTML( wfLocalUrl( $wgTitle->getPrefixedURL(), $q ) );
 488
 489                 $summary = wfMsg( "summary" );
 490                 $minor = wfMsg( "minoredit" );
 491                 $watchthis = wfMsg ("watchthis");
 492                 $save = wfMsg( "savearticle" );
 493                 $prev = wfMsg( "showpreview" );
 494
 495                 $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedURL(),
 496                   wfMsg( "cancel" ) );
 497                 $edithelp = $sk->makeKnownLink( wfMsg( "edithelppage" ),
 498                   wfMsg( "edithelp" ) );
 499                 $copywarn = str_replace( "$1", $sk->makeKnownLink(
 500                   wfMsg( "copyrightpage" ) ), wfMsg( "copyrightwarning" ) );
 501
 502                 $wpTextbox1 = wfEscapeHTML( $wpTextbox1 );
 503                 $wpTextbox2 = wfEscapeHTML( $wpTextbox2 );
 504                 $wpSummary = wfEscapeHTML( $wpSummary );
 505
 506                 // activate checkboxes if user wants them to be always active
 507                 if (!$wpPreview && $wgUser->getOption("watchdefault")) $wpWatchthis=1;
 508                 if (!$wpPreview && $wgUser->getOption("minordefault")) $wpMinoredit=1;
 509
 510                 // activate checkbox also if user is already watching the page,
 511                 // require wpWatchthis to be unset so that second condition is not
 512                 // checked unnecessarily
 513                 if (!$wpWatchthis && !$wpPreview && $wgTitle->userIsWatching()) $wpWatchthis=1;
 514
 515                 if ( 0 != $wgUser->getID() ) {
 516                         $checkboxhtml=
 517                         "<input tabindex=3 type=checkbox value=1 name='wpMinoredit'".($wpMinoredit?" checked":"").">{$minor}".
 518                         "<input tabindex=4 type=checkbox name='wpWatchthis'".($wpWatchthis?" checked":"").">{$watchthis}<br>";
 519
 520                 } else {
 521                         $checkboxhtml="";
 522                 }
 523
 524
 525                 if ( "preview" == $formtype) {
 526
 527                         $previewhead="<h2>" . wfMsg( "preview" ) . "</h2>\n<p><large><center><font color=\"#cc0000\">" .
 528                         wfMsg( "note" ) . wfMsg( "previewnote" ) . "</font></center></large><P>\n";
 529                         if ( $isConflict ) {
 530                                 $previewhead.="<h2>" . wfMsg( "previewconflict" ) .
 531                                   "</h2>\n";
 532                         }
 533                         $previewtext = wfUnescapeHTML( $wpTextbox1 );
 534
 535                         if($wgUser->getOption("previewontop")) {
 536                                 $wgOut->addHTML($previewhead);
 537                                 $wgOut->addWikiText( $this->preSaveTransform( $previewtext ) ."\n\n");
 538                         }
 539                 }
 540                 $wgOut->addHTML( "
 541 <form id=\"editform\" method=\"post\" action=\"$action\"
 542 enctype=\"application/x-www-form-urlencoded\">
 543 <textarea tabindex=1 name=\"wpTextbox1\" rows={$rows}
 544 cols={$cols}{$ew} wrap=\"virtual\">" .
 545 $wgLang->recodeForEdit( $wpTextbox1 ) .
 546 "
 547 </textarea><br>
 548 {$summary}: <input tabindex=2 type=text value=\"{$wpSummary}\"
 549 name=\"wpSummary\" maxlength=200 size=60><br>
 550 {$checkboxhtml}
 551 <input tabindex=5 type=submit value=\"{$save}\" name=\"wpSave\">
 552 <input tabindex=6 type=submit value=\"{$prev}\" name=\"wpPreview\">
 553 <em>{$cancel}</em> | <em>{$edithelp}</em>
 554 <br><br>{$copywarn}
 555 <input type=hidden value=\"{$wpEdittime}\" name=\"wpEdittime\">\n" );
 556
 557                 if ( $isConflict ) {
 558                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 559                         DifferenceEngine::showDiff( $wpTextbox2, $wpTextbox1,
 560                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 561
 562                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 563 <textarea tabindex=6 name=\"wpTextbox2\" rows={$rows} cols={$cols} wrap=virtual>"
 564 . $wgLang->recodeForEdit( $wpTextbox2 ) .
 565 "
 566 </textarea>" );
 567                 }
 568                 $wgOut->addHTML( "</form>\n" );
 569                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 570                         $wgOut->addHTML($previewhead);
 571                         $wgOut->addWikiText( $this->preSaveTransform( $previewtext ) );
 572                 }
 573
 574         }
 575
 576         # Theoretically we could defer these whole insert and update
 577         # functions for after display, but that's taking a big leap
 578         # of faith, and we want to be able to report database
 579         # errors at some point.
 580
 581         /* private */ function insertNewArticle( $text, $summary, $isminor, $watchthis )
 582         {
 583                 global $wgOut, $wgUser, $wgTitle, $wgLinkCache;
 584                 $fname = "Article::insertNewArticle";
 585
 586                 $ns = $wgTitle->getNamespace();
 587                 $ttl = $wgTitle->getDBkey();
 588                 $text = $this->preSaveTransform( $text );
 589                 if ( preg_match( "/^#redirect/i", $text ) ) { $redir = 1; }
 590                 else { $redir = 0; }
 591
 592                 $now = wfTimestampNow();
 593                 $won = wfInvertTimestamp( $now );
 594                 $sql = "INSERT INTO cur (cur_namespace,cur_title,cur_text," .
 595                   "cur_comment,cur_user,cur_timestamp,cur_minor_edit,cur_counter," .
 596                   "cur_restrictions,cur_user_text,cur_is_redirect," .
 597                   "cur_is_new,cur_random,cur_touched,inverse_timestamp) VALUES ({$ns},'" . wfStrencode( $ttl ) . "', '" .
 598                   wfStrencode( $text ) . "', '" .
 599                   wfStrencode( $summary ) . "', '" .
 600                   $wgUser->getID() . "', '{$now}', " .
 601                   ( $isminor ? 1 : 0 ) . ", 0, '', '" .
 602                   wfStrencode( $wgUser->getName() ) . "', $redir, 1, RAND(), '{$now}', '{$won}')";
 603                 $res = wfQuery( $sql, $fname );
 604
 605                 $newid = wfInsertId();
 606                 $wgTitle->resetArticleID( $newid );
 607
 608                 $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time," .
 609                   "rc_namespace,rc_title,rc_new,rc_minor,rc_cur_id,rc_user," .
 610                   "rc_user_text,rc_comment,rc_this_oldid,rc_last_oldid,rc_bot) VALUES (" .
 611                   "'{$now}','{$now}',{$ns},'" . wfStrencode( $ttl ) . "',1," .
 612                   ( $isminor ? 1 : 0 ) . ",{$newid}," . $wgUser->getID() . ",'" .
 613                   wfStrencode( $wgUser->getName() ) . "','" .
 614                   wfStrencode( $summary ) . "',0,0," .
 615                   ( $wgUser->isBot() ? 1 : 0 ) . ")";
 616                 wfQuery( $sql, $fname );
 617                 if ($watchthis) {
 618                         if(!$wgTitle->userIsWatching()) $this->watch();
 619                 } else {
 620                         if ( $wgTitle->userIsWatching() ) {
 621                                 $this->unwatch();
 622                         }
 623                 }
 624
 625                 $this->showArticle( $text, wfMsg( "newarticle" ) );
 626         }
 627
 628         function updateArticle( $text, $summary, $minor, $watchthis )
 629         {
 630                 global $wgOut, $wgUser, $wgTitle, $wgLinkCache;
 631                 global $wgDBtransactions;
 632                 $fname = "Article::updateArticle";
 633
 634                 if ( $this->mMinorEdit ) { $me1 = 1; } else { $me1 = 0; }
 635                 if ( $minor ) { $me2 = 1; } else { $me2 = 0; }
 636                 if ( preg_match( "/^(#redirect[^\\n]+)/i", $text, $m ) ) {
 637                         $redir = 1;
 638                         $text = $m[1] . "\n"; # Remove all content but redirect
 639                 }
 640                 else { $redir = 0; }
 641                 $this->loadLastEdit();
 642
 643                 $text = $this->preSaveTransform( $text );
 644
 645                 # Update article, but only if changed.
 646
 647                 if( $wgDBtransactions ) {
 648                         $sql = "BEGIN";
 649                         wfQuery( $sql );
 650                 }
 651                 $oldtext = $this->getContent( true );
 652
 653                 if ( 0 != strcmp( $text, $oldtext ) ) {
 654                         $this->mCountAdjustment = $this->isCountable( $text )
 655                           - $this->isCountable( $oldtext );
 656
 657                         $sql = "INSERT INTO old (old_namespace,old_title,old_text," .
 658                           "old_comment,old_user,old_user_text,old_timestamp," .
 659                           "old_minor_edit,inverse_timestamp) VALUES (" .
 660                           $wgTitle->getNamespace() . ", '" .
 661                           wfStrencode( $wgTitle->getDBkey() ) . "', '" .
 662                           wfStrencode( $oldtext ) . "', '" .
 663                           wfStrencode( $this->getComment() ) . "', " .
 664                           $this->getUser() . ", '" .
 665                           wfStrencode( $this->getUserText() ) . "', '" .
 666                           $this->getTimestamp() . "', " . $me1 . ", '" .
 667                           wfInvertTimestamp( $this->getTimestamp() ) . "')";
 668                         $res = wfQuery( $sql, $fname );
 669                         $oldid = wfInsertID( $res );
 670
 671                         $now = wfTimestampNow();
 672                         $won = wfInvertTimestamp( $now );
 673                         $sql = "UPDATE cur SET cur_text='" . wfStrencode( $text ) .
 674                           "',cur_comment='" .  wfStrencode( $summary ) .
 675                           "',cur_minor_edit={$me2}, cur_user=" . $wgUser->getID() .
 676                           ",cur_timestamp='{$now}',cur_user_text='" .
 677                           wfStrencode( $wgUser->getName() ) .
 678                           "',cur_is_redirect={$redir}, cur_is_new=0, cur_touched='{$now}', inverse_timestamp='{$won}' " .
 679                           "WHERE cur_id=" . $this->getID();
 680                         wfQuery( $sql, $fname );
 681
 682                         $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time," .
 683                           "rc_namespace,rc_title,rc_new,rc_minor,rc_bot,rc_cur_id,rc_user," .
 684                           "rc_user_text,rc_comment,rc_this_oldid,rc_last_oldid) VALUES (" .
 685                           "'{$now}','{$now}'," . $wgTitle->getNamespace() . ",'" .
 686                           wfStrencode( $wgTitle->getDBkey() ) . "',0,{$me2}," .
 687                           ( $wgUser->isBot() ? 1 : 0 ) . "," .
 688                           $this->getID() . "," . $wgUser->getID() . ",'" .
 689                           wfStrencode( $wgUser->getName() ) . "','" .
 690                           wfStrencode( $summary ) . "',0,{$oldid})";
 691                         wfQuery( $sql, $fname );
 692
 693                         $sql = "UPDATE recentchanges SET rc_this_oldid={$oldid} " .
 694                           "WHERE rc_namespace=" . $wgTitle->getNamespace() . " AND " .
 695                           "rc_title='" . wfStrencode( $wgTitle->getDBkey() ) . "' AND " .
 696                           "rc_timestamp='" . $this->getTimestamp() . "'";
 697                         wfQuery( $sql, $fname );
 698
 699                         $sql = "UPDATE recentchanges SET rc_cur_time='{$now}' " .
 700                           "WHERE rc_cur_id=" . $this->getID();
 701                         wfQuery( $sql, $fname );
 702                 }
 703                 if( $wgDBtransactions ) {
 704                         $sql = "COMMIT";
 705                         wfQuery( $sql );
 706                 }
 707
 708                 if ($watchthis) {
 709                         if (!$wgTitle->userIsWatching()) $this->watch();
 710                 } else {
 711                         if ( $wgTitle->userIsWatching() ) {
 712                                 $this->unwatch();
 713                         }
 714                 }
 715
 716                 $this->showArticle( $text, wfMsg( "updated" ) );
 717         }
 718
 719         # After we've either updated or inserted the article, update
 720         # the link tables and redirect to the new page.
 721
 722         function showArticle( $text, $subtitle )
 723         {
 724                 global $wgOut, $wgTitle, $wgUser, $wgLinkCache;
 725
 726                 $wgLinkCache = new LinkCache();
 727                 $wgOut->addWikiText( $text ); # Just to update links
 728
 729                 $this->editUpdates( $text );
 730                 if( preg_match( "/^#redirect/i", $text ) )
 731                         $r = "redirect=no";
 732                 else
 733                         $r = "";
 734                 $wgOut->redirect( wfLocalUrl( $wgTitle->getPrefixedURL(), $r ) );
 735         }
 736
 737         # If the page we've just displayed is in the "Image" namespace,
 738         # we follow it with an upload history of the image and its usage.
 739
 740         function imageHistory()
 741         {
 742                 global $wgUser, $wgOut, $wgLang, $wgTitle;
 743                 $fname = "Article::imageHistory";
 744
 745                 $sql = "SELECT img_size,img_description,img_user," .
 746                   "img_user_text,img_timestamp FROM image WHERE " .
 747                   "img_name='" . wfStrencode( $wgTitle->getDBkey() ) . "'";
 748                 $res = wfQuery( $sql, $fname );
 749
 750                 if ( 0 == wfNumRows( $res ) ) { return; }
 751
 752                 $sk = $wgUser->getSkin();
 753                 $s = $sk->beginImageHistoryList();
 754
 755                 $line = wfFetchObject( $res );
 756                 $s .= $sk->imageHistoryLine( true, $line->img_timestamp,
 757                   $wgTitle->getText(),  $line->img_user,
 758                   $line->img_user_text, $line->img_size, $line->img_description );
 759
 760                 $sql = "SELECT oi_size,oi_description,oi_user," .
 761                   "oi_user_text,oi_timestamp,oi_archive_name FROM oldimage WHERE " .
 762                   "oi_name='" . wfStrencode( $wgTitle->getDBkey() ) . "' " .
 763                   "ORDER BY oi_timestamp DESC";
 764                 $res = wfQuery( $sql, $fname );
 765
 766                 while ( $line = wfFetchObject( $res ) ) {
 767                         $s .= $sk->imageHistoryLine( false, $line->oi_timestamp,
 768                           $line->oi_archive_name, $line->oi_user,
 769                           $line->oi_user_text, $line->oi_size, $line->oi_description );
 770                 }
 771                 $s .= $sk->endImageHistoryList();
 772                 $wgOut->addHTML( $s );
 773         }
 774
 775         function imageLinks()
 776         {
 777                 global $wgUser, $wgOut, $wgTitle;
 778
 779                 $wgOut->addHTML( "<h2>" . wfMsg( "imagelinks" ) . "</h2>\n" );
 780
 781                 $sql = "SELECT il_from FROM imagelinks WHERE il_to='" .
 782                   wfStrencode( $wgTitle->getDBkey() ) . "'";
 783                 $res = wfQuery( $sql, "Article::imageLinks" );
 784
 785                 if ( 0 == wfNumRows( $res ) ) {
 786                         $wgOut->addHtml( "<p>" . wfMsg( "nolinkstoimage" ) . "\n" );
 787                         return;
 788                 }
 789                 $wgOut->addHTML( "<p>" . wfMsg( "linkstoimage" ) .  "\n<ul>" );
 790
 791                 $sk = $wgUser->getSkin();
 792                 while ( $s = wfFetchObject( $res ) ) {
 793                         $name = $s->il_from;
 794                         $link = $sk->makeKnownLink( $name, "" );
 795                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 796                 }
 797                 $wgOut->addHTML( "</ul>\n" );
 798         }
 799
 800         # Add this page to my watchlist
 801
 802         function watch()
 803         {
 804                 global $wgUser, $wgTitle, $wgOut, $wgLang;
 805                 global $wgDeferredUpdateList;
 806
 807                 if ( 0 == $wgUser->getID() ) {
 808                         $wgOut->errorpage( "watchnologin", "watchnologintext" );
 809                         return;
 810                 }
 811                 if ( wfReadOnly() ) {
 812                         $wgOut->readOnlyPage();
 813                         return;
 814                 }
 815                 $wgUser->addWatch( $wgTitle );
 816
 817                 $wgOut->setPagetitle( wfMsg( "addedwatch" ) );
 818                 $wgOut->setRobotpolicy( "noindex,follow" );
 819
 820                 $sk = $wgUser->getSkin() ;
 821                 $link = $sk->makeKnownLink ( $wgTitle->getPrefixedText() ) ;
 822
 823                 $text = str_replace( "$1", $link ,
 824                   wfMsg( "addedwatchtext" ) );
 825                 $wgOut->addHTML( $text );
 826
 827                 $up = new UserUpdate();
 828                 array_push( $wgDeferredUpdateList, $up );
 829
 830                 $wgOut->returnToMain( false );
 831         }
 832
 833         function unwatch()
 834         {
 835                 global $wgUser, $wgTitle, $wgOut, $wgLang;
 836                 global $wgDeferredUpdateList;
 837
 838                 if ( 0 == $wgUser->getID() ) {
 839                         $wgOut->errorpage( "watchnologin", "watchnologintext" );
 840                         return;
 841                 }
 842                 if ( wfReadOnly() ) {
 843                         $wgOut->readOnlyPage();
 844                         return;
 845                 }
 846                 $wgUser->removeWatch( $wgTitle );
 847
 848                 $wgOut->setPagetitle( wfMsg( "removedwatch" ) );
 849                 $wgOut->setRobotpolicy( "noindex,follow" );
 850
 851                 $sk = $wgUser->getSkin() ;
 852                 $link = $sk->makeKnownLink ( $wgTitle->getPrefixedText() ) ;
 853
 854                 $text = str_replace( "$1", $link ,
 855                   wfMsg( "removedwatchtext" ) );
 856                 $wgOut->addHTML( $text );
 857
 858                 $up = new UserUpdate();
 859                 array_push( $wgDeferredUpdateList, $up );
 860
 861                 $wgOut->returnToMain( false );
 862         }
 863
 864         # This shares a lot of issues (and code) with Recent Changes
 865
 866         function history()
 867         {
 868                 global $wgUser, $wgOut, $wgLang, $wgTitle, $offset, $limit;
 869
 870                 # If page hasn't changed, client can cache this
 871
 872                 $wgOut->checkLastModified( $this->getTimestamp() );
 873                 wfProfileIn( "Article::history" );
 874
 875                 $wgOut->setPageTitle( $wgTitle->getPRefixedText() );
 876                 $wgOut->setSubtitle( wfMsg( "revhistory" ) );
 877                 $wgOut->setArticleFlag( false );
 878                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 879
 880                 if( $wgTitle->getArticleID() == 0 ) {
 881                         $wgOut->addHTML( wfMsg( "nohistory" ) );
 882                         wfProfileOut();
 883                         return;
 884                 }
 885
 886                 $offset = (int)$offset;
 887                 $limit = (int)$limit;
 888                 if( $limit == 0 ) $limit = 50;
 889                 $namespace = $wgTitle->getNamespace();
 890                 $title = $wgTitle->getText();
 891                 $sql = "SELECT old_id,old_user," .
 892                   "old_comment,old_user_text,old_timestamp,old_minor_edit ".
 893                   "FROM old USE INDEX (name_title_timestamp) " .
 894                   "WHERE old_namespace={$namespace} AND " .
 895                   "old_title='" . wfStrencode( $wgTitle->getDBkey() ) . "' " .
 896                   "ORDER BY inverse_timestamp LIMIT $offset, $limit";
 897                 $res = wfQuery( $sql, "Article::history" );
 898
 899                 $revs = wfNumRows( $res );
 900                 if( $wgTitle->getArticleID() == 0 ) {
 901                         $wgOut->addHTML( wfMsg( "nohistory" ) );
 902                         wfProfileOut();
 903                         return;
 904                 }
 905
 906                 $sk = $wgUser->getSkin();
 907                 $numbar = wfViewPrevNext(
 908                         $offset, $limit,
 909                         $wgTitle->getPrefixedText(),
 910                         "action=history" );
 911                 $s = $numbar;
 912                 $s .= $sk->beginHistoryList();
 913
 914                 if($offset == 0 )
 915                 $s .= $sk->historyLine( $this->getTimestamp(), $this->getUser(),
 916                   $this->getUserText(), $namespace,
 917                   $title, 0, $this->getComment(),
 918                   ( $this->getMinorEdit() > 0 ) );
 919
 920                 $revs = wfNumRows( $res );
 921                 while ( $line = wfFetchObject( $res ) ) {
 922                         $s .= $sk->historyLine( $line->old_timestamp, $line->old_user,
 923                           $line->old_user_text, $namespace,
 924                           $title, $line->old_id,
 925                           $line->old_comment, ( $line->old_minor_edit > 0 ) );
 926                 }
 927                 $s .= $sk->endHistoryList();
 928                 $s .= $numbar;
 929                 $wgOut->addHTML( $s );
 930                 wfProfileOut();
 931         }
 932
 933         function protect()
 934         {
 935                 global $wgUser, $wgOut, $wgTitle;
 936
 937                 if ( ! $wgUser->isSysop() ) {
 938                         $wgOut->sysopRequired();
 939                         return;
 940                 }
 941                 if ( wfReadOnly() ) {
 942                         $wgOut->readOnlyPage();
 943                         return;
 944                 }
 945                 $id = $wgTitle->getArticleID();
 946                 if ( 0 == $id ) {
 947                         $wgOut->fatalEror( wfMsg( "badarticleerror" ) );
 948                         return;
 949                 }
 950         $sql = "UPDATE cur SET cur_touched='" . wfTimestampNow() . "'," .
 951                   "cur_restrictions='sysop' WHERE cur_id={$id}";
 952                 wfQuery( $sql, "Article::protect" );
 953
 954                 $wgOut->redirect( wfLocalUrl( $wgTitle->getPrefixedURL() ) );
 955         }
 956
 957         function unprotect()
 958         {
 959                 global $wgUser, $wgOut, $wgTitle;
 960
 961                 if ( ! $wgUser->isSysop() ) {
 962                         $wgOut->sysopRequired();
 963                         return;
 964                 }
 965                 if ( wfReadOnly() ) {
 966                         $wgOut->readOnlyPage();
 967                         return;
 968                 }
 969                 $id = $wgTitle->getArticleID();
 970                 if ( 0 == $id ) {
 971                         $wgOut->fatalEror( wfMsg( "badarticleerror" ) );
 972                         return;
 973                 }
 974                 $sql = "UPDATE cur SET cur_touched='" . wfTimestampNow() . "'," .
 975                   "cur_restrictions='' WHERE cur_id={$id}";
 976                 wfQuery( $sql, "Article::unprotect" );
 977
 978                 $wgOut->redirect( wfLocalUrl( $wgTitle->getPrefixedURL() ) );
 979         }
 980
 981         function delete()
 982         {
 983                 global $wgUser, $wgOut, $wgTitle;
 984                 global $wpConfirm, $wpReason, $image, $oldimage;
 985
 986                 # Anybody can delete old revisions of images; only sysops
 987                 # can delete articles and current images
 988
 989                 if ( ( ! $oldimage ) && ( ! $wgUser->isSysop() ) ) {
 990                         $wgOut->sysopRequired();
 991                         return;
 992                 }
 993                 if ( wfReadOnly() ) {
 994                         $wgOut->readOnlyPage();
 995                         return;
 996                 }
 997
 998                 # Better double-check that it hasn't been deleted yet!
 999                 $wgOut->setPagetitle( wfMsg( "confirmdelete" ) );
1000                 if ( $image ) {
1001                         if ( "" == trim( $image ) ) {
1002                                 $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1003                                 return;
1004                         }
1005                         $sub = str_replace( "$1", $image, wfMsg( "deletesub" ) );
1006                 } else {
1007                         if ( ( "" == trim( $wgTitle->getText() ) )
1008                           or ( $wgTitle->getArticleId() == 0 ) ) {
1009                                 $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1010                                 return;
1011                         }
1012                         $sub = str_replace( "$1", $wgTitle->getPrefixedText(),
1013                           wfMsg( "deletesub" ) );
1014                 }
1015
1016                 # Likewise, deleting old images doesn't require confirmation
1017                 if ( $oldimage || 1 == $wpConfirm ) {
1018                         $this->doDelete();
1019                         return;
1020                 }
1021
1022                 $wgOut->setSubtitle( $sub );
1023                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1024                 $wgOut->addWikiText( wfMsg( "confirmdeletetext" ) );
1025
1026                 $t = $wgTitle->getPrefixedURL();
1027                 $q = "action=delete";
1028
1029                 if ( $image ) {
1030                         $q .= "&image={$image}";
1031                 } else if ( $oldimage ) {
1032                         $q .= "&oldimage={$oldimage}";
1033                 } else {
1034                         $q .= "&title={$t}";
1035                 }
1036                 $formaction = wfEscapeHTML( wfLocalUrl( "", $q ) );
1037                 $confirm = wfMsg( "confirm" );
1038                 $check = wfMsg( "confirmcheck" );
1039                 $delcom = wfMsg( "deletecomment" );
1040
1041                 $wgOut->addHTML( "
1042 <form id=\"deleteconfirm\" method=\"post\" action=\"{$formaction}\">
1043 <table border=0><tr><td align=right>
1044 {$delcom}:</td><td align=left>
1045 <input type=text size=20 name=\"wpReason\" value=\"{$wpReason}\">
1046 </td></tr><tr><td>&nbsp;</td></tr>
1047 <tr><td align=right>
1048 <input type=checkbox name=\"wpConfirm\" value='1'>
1049 </td><td>{$check}</td>
1050 </tr><tr><td>&nbsp;</td><td>
1051 <input type=submit name=\"wpConfirmB\" value=\"{$confirm}\">
1052 </td></tr></table></form>\n" );
1053
1054                 $wgOut->returnToMain( false );
1055         }
1056
1057         function doDelete()
1058         {
1059                 global $wgOut, $wgTitle, $wgUser, $wgLang;
1060                 global $image, $oldimage, $wpReason;
1061                 $fname = "Article::doDelete";
1062
1063                 if ( $image ) {
1064                         $dest = wfImageDir( $image );
1065                         $archive = wfImageDir( $image );
1066                         if ( ! unlink( "{$dest}/{$image}" ) ) {
1067                                 $wgOut->fileDeleteError( "{$dest}/{$image}" );
1068                                 return;
1069                         }
1070                         $sql = "DELETE FROM image WHERE img_name='" .
1071                           wfStrencode( $image ) . "'";
1072                         wfQuery( $sql, $fname );
1073
1074                         $sql = "SELECT oi_archive_name FROM oldimage WHERE oi_name='" .
1075                           wfStrencode( $image ) . "'";
1076                         $res = wfQuery( $sql, $fname );
1077
1078                         while ( $s = wfFetchObject( $res ) ) {
1079                                 $this->doDeleteOldImage( $s->oi_archive_name );
1080                         }
1081                         $sql = "DELETE FROM oldimage WHERE oi_name='" .
1082                           wfStrencode( $image ) . "'";
1083                         wfQuery( $sql, $fname );
1084
1085                         # Image itself is now gone, and database is cleaned.
1086                         # Now we remove the image description page.
1087
1088                         $nt = Title::newFromText( $wgLang->getNsText( Namespace::getImage() ) . ":" . $image );
1089                         $this->doDeleteArticle( $nt );
1090
1091                         $deleted = $image;
1092                 } else if ( $oldimage ) {
1093                         $this->doDeleteOldImage( $oldimage );
1094                         $sql = "DELETE FROM oldimage WHERE oi_archive_name='" .
1095                           wfStrencode( $oldimage ) . "'";
1096                         wfQuery( $sql, $fname );
1097
1098                         $deleted = $oldimage;
1099                 } else {
1100                         $this->doDeleteArticle( $wgTitle );
1101                         $deleted = $wgTitle->getPrefixedText();
1102                 }
1103                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1104                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1105
1106                 $sk = $wgUser->getSkin();
1107                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
1108                   Namespace::getWikipedia() ) .
1109                   ":" . wfMsg( "dellogpage" ), wfMsg( "deletionlog" ) );
1110
1111                 $text = str_replace( "$1" , $deleted, wfMsg( "deletedtext" ) );
1112                 $text = str_replace( "$2", $loglink, $text );
1113
1114                 $wgOut->addHTML( "<p>" . $text );
1115                 $wgOut->returnToMain( false );
1116         }
1117
1118         function doDeleteOldImage( $oldimage )
1119         {
1120                 global $wgOut;
1121
1122                 $name = substr( $oldimage, 15 );
1123                 $archive = wfImageArchiveDir( $name );
1124                 if ( ! unlink( "{$archive}/{$oldimage}" ) ) {
1125                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
1126                 }
1127         }
1128
1129         function doDeleteArticle( $title )
1130         {
1131                 global $wgUser, $wgOut, $wgLang, $wpReason, $wgTitle, $wgDeferredUpdateList;
1132
1133                 $fname = "Article::doDeleteArticle";
1134                 $ns = $title->getNamespace();
1135                 $t = wfStrencode( $title->getDBkey() );
1136                 $id = $title->getArticleID();
1137
1138                 if ( "" == $t ) {
1139                         $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1140                         return;
1141                 }
1142
1143                 $u = new SiteStatsUpdate( 0, 1, -$this->isCountable( $this->getContent( true ) ) );
1144                 array_push( $wgDeferredUpdateList, $u );
1145
1146                 # Move article and history to the "archive" table
1147                 $sql = "INSERT INTO archive (ar_namespace,ar_title,ar_text," .
1148                   "ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit," .
1149                   "ar_flags) SELECT cur_namespace,cur_title,cur_text,cur_comment," .
1150                   "cur_user,cur_user_text,cur_timestamp,cur_minor_edit,0 FROM cur " .
1151                   "WHERE cur_namespace={$ns} AND cur_title='{$t}'";
1152                 wfQuery( $sql, $fname );
1153
1154                 $sql = "INSERT INTO archive (ar_namespace,ar_title,ar_text," .
1155                   "ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit," .
1156                   "ar_flags) SELECT old_namespace,old_title,old_text,old_comment," .
1157                   "old_user,old_user_text,old_timestamp,old_minor_edit,old_flags " .
1158                   "FROM old WHERE old_namespace={$ns} AND old_title='{$t}'";
1159                 wfQuery( $sql, $fname );
1160
1161                 # Now that it's safely backed up, delete it
1162
1163                 $sql = "DELETE FROM cur WHERE cur_namespace={$ns} AND " .
1164                   "cur_title='{$t}'";
1165                 wfQuery( $sql, $fname );
1166
1167                 $sql = "DELETE FROM old WHERE old_namespace={$ns} AND " .
1168                   "old_title='{$t}'";
1169                 wfQuery( $sql, $fname );
1170
1171                 $sql = "DELETE FROM recentchanges WHERE rc_namespace={$ns} AND " .
1172                   "rc_title='{$t}'";
1173         wfQuery( $sql, $fname );
1174
1175                 # Finally, clean up the link tables
1176
1177                 if ( 0 != $id ) {
1178                         $t = wfStrencode( $title->getPrefixedDBkey() );
1179                         $sql = "SELECT l_from FROM links WHERE l_to={$id}";
1180                         $res = wfQuery( $sql, $fname );
1181
1182                         $sql = "INSERT INTO brokenlinks (bl_from,bl_to) VALUES ";
1183             $now = wfTimestampNow();
1184                         $sql2 = "UPDATE cur SET cur_touched='{$now}' WHERE cur_id IN (";
1185                         $first = true;
1186
1187                         while ( $s = wfFetchObject( $res ) ) {
1188                                 $nt = Title::newFromDBkey( $s->l_from );
1189                                 $lid = $nt->getArticleID();
1190
1191                                 if ( ! $first ) { $sql .= ","; $sql2 .= ","; }
1192                                 $first = false;
1193                                 $sql .= "({$lid},'{$t}')";
1194                                 $sql2 .= "{$lid}";
1195                         }
1196                         $sql2 .= ")";
1197                         if ( ! $first ) {
1198                                 wfQuery( $sql, $fname );
1199                                 wfQuery( $sql2, $fname );
1200                         }
1201                         wfFreeResult( $res );
1202
1203                         $sql = "DELETE FROM links WHERE l_to={$id}";
1204                         wfQuery( $sql, $fname );
1205
1206                         $sql = "DELETE FROM links WHERE l_from='{$t}'";
1207                         wfQuery( $sql, $fname );
1208
1209                         $sql = "DELETE FROM imagelinks WHERE il_from='{$t}'";
1210                         wfQuery( $sql, $fname );
1211
1212                         $sql = "DELETE FROM brokenlinks WHERE bl_from={$id}";
1213                         wfQuery( $sql, $fname );
1214                 }
1215
1216                 $log = new LogPage( wfMsg( "dellogpage" ), wfMsg( "dellogpagetext" ) );
1217                 $art = $title->getPrefixedText();
1218                 $wpReason = wfCleanQueryVar( $wpReason );
1219                 $log->addEntry( str_replace( "$1", $art, wfMsg( "deletedarticle" ) ), $wpReason );
1220
1221                 # Clear the cached article id so the interface doesn't act like we exist
1222                 $wgTitle->resetArticleID( 0 );
1223                 $wgTitle->mArticleID = 0;
1224         }
1225
1226         function revert()
1227         {
1228                 global $wgOut;
1229                 global $oldimage;
1230
1231                 if ( strlen( $oldimage ) < 16 ) {
1232                         $wgOut->unexpectedValueError( "oldimage", $oldimage );
1233                         return;
1234                 }
1235                 if ( wfReadOnly() ) {
1236                         $wgOut->readOnlyPage();
1237                         return;
1238                 }
1239                 $name = substr( $oldimage, 15 );
1240
1241                 $dest = wfImageDir( $name );
1242                 $archive = wfImageArchiveDir( $name );
1243                 $curfile = "{$dest}/{$name}";
1244
1245                 if ( ! is_file( $curfile ) ) {
1246                         $wgOut->fileNotFoundError( $curfile );
1247                         return;
1248                 }
1249                 $oldver = wfTimestampNow() . "!{$name}";
1250                 $size = wfGetSQL( "oldimage", "oi_size", "oi_archive_name='" .
1251                   wfStrencode( $oldimage ) . "'" );
1252
1253                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
1254                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
1255                         return;
1256                 }
1257                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
1258                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
1259                 }
1260                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
1261
1262                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1263                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1264                 $wgOut->addHTML( wfMsg( "imagereverted" ) );
1265                 $wgOut->returnToMain( false );
1266         }
1267
1268         function rollback()
1269         {
1270                 global $wgUser, $wgTitle, $wgLang, $wgOut;
1271
1272                 if ( ! $wgUser->isSysop() ) {
1273                         $wgOut->sysopRequired();
1274                         return;
1275                 }
1276
1277                 # Replace all this user's current edits with the next one down
1278                 $tt = wfStrencode( $wgTitle->getDBKey() );
1279                 $n = $wgTitle->getNamespace();
1280
1281                 # Get the last editor
1282                 $sql = "SELECT cur_id,cur_user,cur_user_text FROM cur WHERE cur_title='{$tt}' AND cur_namespace={$n}";
1283                 $res = wfQuery( $sql );
1284                 if( ($x = wfNumRows( $res )) != 1 ) {
1285                         # Something wrong
1286                         $wgOut->addHTML( wfMsg( "notanarticle" ) );
1287                         return;
1288                 }
1289                 $s = wfFetchObject( $res );
1290                 $ut = wfStrencode( $s->cur_user_text );
1291                 $uid = $s->cur_user;
1292                 $pid = $s->cur_id;
1293
1294                 # Get the last edit not by this guy
1295                 $sql = "SELECT old_text,old_user,old_user_text
1296                 FROM old USE INDEX (name_title_timestamp)
1297                 WHERE old_namespace={$n} AND old_title='{$tt}'
1298                 AND (old_user <> {$uid} OR old_user_text <> '{$ut}')
1299                 ORDER BY inverse_timestamp LIMIT 1";
1300                 $res = wfQuery( $sql );
1301                 if( wfNumRows( $res ) != 1 ) {
1302                         # Something wrong
1303                         $wgOut->addHTML( wfMsg( "cantrollback" ) );
1304                         return;
1305                 }
1306                 $s = wfFetchObject( $res );
1307
1308                 # Save it!
1309                 $newcomment = str_replace( "$1", $s->old_user_text, wfMsg( "revertpage" ) );
1310                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1311                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1312                 $wgOut->addHTML( "<h2>" . $newcomment . "</h2>\n<hr>\n" );
1313                 $this->updateArticle( $s->old_text, $newcomment, 1, $wgTitle->userIsWatching() );
1314
1315                 $wgOut->returnToMain( false );
1316         }
1317
1318
1319         # Do standard deferred updates after page view
1320
1321         /* private */ function viewUpdates()
1322         {
1323                 global $wgDeferredUpdateList, $wgTitle;
1324
1325                 if ( 0 != $this->getID() ) {
1326                         $u = new ViewCountUpdate( $this->getID() );
1327                         array_push( $wgDeferredUpdateList, $u );
1328                         $u = new SiteStatsUpdate( 1, 0, 0 );
1329                         array_push( $wgDeferredUpdateList, $u );
1330
1331                         $u = new UserTalkUpdate( 0, $wgTitle->getNamespace(),
1332                           $wgTitle->getDBkey() );
1333                         array_push( $wgDeferredUpdateList, $u );
1334                 }
1335         }
1336
1337         # Do standard deferred updates after page edit.
1338         # Every 1000th edit, prune the recent changes table.
1339
1340         /* private */ function editUpdates( $text )
1341         {
1342                 global $wgDeferredUpdateList, $wgTitle;
1343
1344                 wfSeedRandom();
1345                 if ( 0 == mt_rand( 0, 999 ) ) {
1346                         $cutoff = wfUnix2Timestamp( time() - ( 7 * 86400 ) );
1347                         $sql = "DELETE FROM recentchanges WHERE rc_timestamp < '{$cutoff}'";
1348                         wfQuery( $sql );
1349                 }
1350                 $id = $this->getID();
1351                 $title = $wgTitle->getPrefixedDBkey();
1352                 $adj = $this->mCountAdjustment;
1353
1354                 if ( 0 != $id ) {
1355                         $u = new LinksUpdate( $id, $title );
1356                         array_push( $wgDeferredUpdateList, $u );
1357                         $u = new SiteStatsUpdate( 0, 1, $adj );
1358                         array_push( $wgDeferredUpdateList, $u );
1359                         $u = new SearchUpdate( $id, $title, $text );
1360                         array_push( $wgDeferredUpdateList, $u );
1361
1362                         $u = new UserTalkUpdate( 1, $wgTitle->getNamespace(),
1363                           $wgTitle->getDBkey() );
1364                         array_push( $wgDeferredUpdateList, $u );
1365                 }
1366         }
1367
1368         /* private */ function setOldSubtitle()
1369         {
1370                 global $wgLang, $wgOut;
1371
1372                 $td = $wgLang->timeanddate( $this->mTimestamp, true );
1373                 $r = str_replace( "$1", "{$td}", wfMsg( "revisionasof" ) );
1374                 $wgOut->setSubtitle( "({$r})" );
1375         }
1376
1377         function blockedIPpage()
1378         {
1379                 global $wgOut, $wgUser, $wgLang;
1380
1381                 $wgOut->setPageTitle( wfMsg( "blockedtitle" ) );
1382                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1383                 $wgOut->setArticleFlag( false );
1384
1385                 $id = $wgUser->blockedBy();
1386                 $reason = $wgUser->blockedFor();
1387
1388                 $name = User::whoIs( $id );
1389                 $link = "[[" . $wgLang->getNsText( Namespace::getUser() ) .
1390                   ":{$name}|{$name}]]";
1391
1392                 $text = str_replace( "$1", $link, wfMsg( "blockedtext" ) );
1393                 $text = str_replace( "$2", $reason, $text );
1394                 $wgOut->addWikiText( $text );
1395                 $wgOut->returnToMain( false );
1396         }
1397
1398         # This function is called right before saving the wikitext,
1399         # so we can do things like signatures and links-in-context.
1400
1401         function preSaveTransform( $text )
1402         {
1403                 $s = "";
1404                 while ( "" != $text ) {
1405                         $p = preg_split( "/<\\s*nowiki\\s*>/i", $text, 2 );
1406                         $s .= $this->pstPass2( $p[0] );
1407
1408                         if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { $text = ""; }
1409                         else {
1410                                 $q = preg_split( "/<\\/\\s*nowiki\\s*>/i", $p[1], 2 );
1411                                 $s .= "<nowiki>{$q[0]}</nowiki>";
1412                                 $text = $q[1];
1413                         }
1414                 }
1415                 return rtrim( $s );
1416         }
1417
1418         /* private */ function pstPass2( $text )
1419         {
1420                 global $wgUser, $wgLang, $wgTitle, $wgLocaltimezone;
1421
1422                 # Signatures
1423                 #
1424                 $n = $wgUser->getName();
1425                 $k = $wgUser->getOption( "nickname" );
1426                 if ( "" == $k ) { $k = $n; }
1427                 if(isset($wgLocaltimezone)) {
1428                         $oldtz = getenv("TZ"); putenv("TZ=$wgLocaltimezone");
1429                 }
1430                 $d = $wgLang->timeanddate( wfTimestampNow(), false ) .
1431                   " (" . date( "T" ) . ")";
1432                 if(isset($wgLocaltimezone)) putenv("TZ=$oldtz");
1433
1434                 $text = preg_replace( "/~~~~/", "[[" . $wgLang->getNsText(
1435                   Namespace::getUser() ) . ":$n|$k]] $d", $text );
1436                 $text = preg_replace( "/~~~/", "[[" . $wgLang->getNsText(
1437                   Namespace::getUser() ) . ":$n|$k]]", $text );
1438
1439                 # Context links: [[|name]] and [[name (context)|]]
1440                 #
1441                 $tc = "[&;%\\-,.\\(\\)' _0-9A-Za-z\\/:\\x80-\\xff]";
1442                 $np = "[&;%\\-,.' _0-9A-Za-z\\/:\\x80-\\xff]"; # No parens
1443                 $conpat = "/^({$np}+) \\(({$tc}+)\\)$/";
1444
1445                 $p1 = "/\[\[({$np}+) \\(({$np}+)\\)\\|]]/";             # [[page (context)|]]
1446                 $p2 = "/\[\[\\|({$tc}+)]]/";                                    # [[|page]]
1447                 $p3 = "/\[\[([A-Za-z _]+):({$np}+)\\|]]/";              # [[namespace:page|]]
1448                 $p4 = "/\[\[([A-Aa-z _]+):({$np}+) \\(({$np}+)\\)\\|]]/";
1449                                                                                                                 # [[ns:page (cont)|]]
1450                 $context = "";
1451                 $t = $wgTitle->getText();
1452                 if ( preg_match( $conpat, $t, $m ) ) {
1453                         $context = $m[2];
1454                 }
1455                 $text = preg_replace( $p4, "[[\\1:\\2 (\\3)|\\2]]", $text );
1456                 $text = preg_replace( $p1, "[[\\1 (\\2)|\\1]]", $text );
1457                 $text = preg_replace( $p3, "[[\\1:\\2|\\2]]", $text );
1458
1459                 if ( "" == $context ) {
1460                         $text = preg_replace( $p2, "[[\\1]]", $text );
1461                 } else {
1462                         $text = preg_replace( $p2, "[[\\1 ({$context})|\\1]]", $text );
1463                 }
1464                 # Replace local image links with new [[image:]] style
1465
1466                 $text = preg_replace(
1467                   "/(^|[^[])http:\/\/(www.|)wikipedia.com\/upload\/" .
1468                   "([a-zA-Z0-9_:.~\%\-]+)\.(png|PNG|jpg|JPG|jpeg|JPEG|gif|GIF)/",
1469                   "\\1[[image:\\3.\\4]]", $text );
1470                 $text = preg_replace(
1471                   "/(^|[^[])http:\/\/(www.|)wikipedia.com\/images\/uploads\/" .
1472                   "([a-zA-Z0-9_:.~\%\-]+)\.(png|PNG|jpg|JPG|jpeg|JPEG|gif|GIF)/",
1473                   "\\1[[image:\\3.\\4]]", $text );
1474
1475                 return $text;
1476         }
1477
1478
1479         /* Caching functions */
1480
1481     function tryFileCache() {
1482                 if($this->isFileCacheable()) {
1483                         if($this->isFileCacheGood()) {
1484                 wfDebug( " tryFileCache() - about to load\n" );
1485                                 $this->loadFromFileCache();
1486                                 exit;
1487                         } else {
1488                     wfDebug( " tryFileCache() - starting buffer\n" );
1489                         ob_start( array(&$this, 'saveToFileCache' ) );
1490                         }
1491                 } else {
1492                         wfDebug( " tryFileCache() - not cacheable\n" );
1493                 }
1494         }
1495
1496         function isFileCacheable() {
1497                 global $wgUser, $wgTitle, $wgUseFileCache, $wgShowIPinHeader;
1498                 global $action, $oldid, $diff, $redirect, $printable;
1499                 return $wgUseFileCache
1500                         and (!$wgShowIPinHeader)
1501                         and ($wgUser->getId() == 0)
1502                         and (!$wgUser->getNewtalk())
1503                         and ($wgTitle->getNamespace != Namespace::getSpecial())
1504                         and ($action == "view")
1505                         and (!isset($oldid))
1506                         and (!isset($diff))
1507                         and (!isset($redirect))
1508                         and (!isset($printable))
1509                         and (!$this->mRedirectedFrom);
1510
1511         }
1512
1513         function fileCacheName() {
1514                 global $wgTitle, $wgFileCacheDirectory, $wgLang;
1515                 if( !$this->mFileCache ) {
1516                         $hash = md5( $key = $wgTitle->getDbkey() );
1517                         if( $wgTitle->getNamespace() )
1518                                 $key = $wgLang->getNsText( $wgTitle->getNamespace() ) . ":" . $key;
1519                         $key = str_replace( ".", "%2E", urlencode( $key ) );
1520                         $hash1 = substr( $hash, 0, 1 );
1521                         $hash2 = substr( $hash, 0, 2 );
1522                         $this->mFileCache = "{$wgFileCacheDirectory}/{$hash1}/{$hash2}/{$key}.html";
1523                         wfDebug( " fileCacheName() - {$this->mFileCache}\n" );
1524                 }
1525                 return $this->mFileCache;
1526         }
1527
1528         function isFileCacheGood() {
1529                 global $wgUser, $wgCacheEpoch;
1530                 if(!file_exists( $fn = $this->fileCacheName() ) ) return false;
1531                 $cachetime = wfUnix2Timestamp( filemtime( $fn ) );
1532                 $good = ( $this->mTouched <= $cachetime ) &&
1533                         ($wgCacheEpoch <= $cachetime );
1534         wfDebug(" isFileCacheGood() - cachetime $cachetime, touched {$this->mTouched} epoch {$wgCacheEpoch}, good $good\n");
1535                 return $good;
1536         }
1537
1538         function loadFromFileCache() {
1539                 wfDebug(" loadFromFileCache()\n");
1540                 readfile($this->fileCacheName());
1541         }
1542
1543         function saveToFileCache( $text ) {
1544
1545         wfDebug(" saveToFileCache()\n");
1546                 $filename=$this->fileCacheName();
1547                 $mydir2=substr($filename,0,strrpos($filename,"/")); # subdirectory level 2
1548                 $mydir1=substr($mydir2,0,strrpos($mydir2,"/")); # subdirectory level 1
1549                 if(!file_exists($mydir1)) { mkdir($mydir1,0777); } # create if necessary
1550                 if(!file_exists($mydir2)) { mkdir($mydir2,0777); }
1551                 $f = fopen( $filename, "w" );
1552                 if($f) {
1553                         fwrite( $f, str_replace( "</html>",
1554                                 "<!-- Cached " . wfTimestampNow() . " -->\n</html>",
1555                                 $text ) );
1556                         fclose( $f );
1557                 }
1558                 return $text;
1559         }
1560
1561 }
1562
1563 ?>