includes/UserMailer.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @author <brion@pobox.com>
  19  * @author <mail@tgries.de>
  20  * @author Tim Starling
  21  *
  22  */
  23
  24
  25 /**
  26  * Stores a single person's name and email address.
  27  * These are passed in via the constructor, and will be returned in SMTP
  28  * header format when requested.
  29  */
  30 class MailAddress {
  31         /**
  32          * @param $address Mixed: string with an email address, or a User object
  33          * @param $name String: human-readable name if a string address is given
  34          */
  35         function __construct( $address, $name = null, $realName = null ) {
  36                 if( is_object( $address ) && $address instanceof User ) {
  37                         $this->address = $address->getEmail();
  38                         $this->name = $address->getName();
  39                         $this->realName = $address->getRealName();
  40                 } else {
  41                         $this->address = strval( $address );
  42                         $this->name = strval( $name );
  43                         $this->reaName = strval( $realName );
  44                 }
  45         }
  46
  47         /**
  48          * Return formatted and quoted address to insert into SMTP headers
  49          * @return string
  50          */
  51         function toString() {
  52                 # PHP's mail() implementation under Windows is somewhat shite, and
  53                 # can't handle "Joe Bloggs <joe@bloggs.com>" format email addresses,
  54                 # so don't bother generating them
  55                 if( $this->name != '' && !wfIsWindows() ) {
  56                         global $wgEnotifUseRealName;
  57                         $name = ( $wgEnotifUseRealName && $this->realName ) ? $this->realName : $this->name;
  58                         $quoted = wfQuotedPrintable( $name );
  59                         if( strpos( $quoted, '.' ) !== false || strpos( $quoted, ',' ) !== false ) {
  60                                 $quoted = '"' . $quoted . '"';
  61                         }
  62                         return "$quoted <{$this->address}>";
  63                 } else {
  64                         return $this->address;
  65                 }
  66         }
  67
  68         function __toString() {
  69                 return $this->toString();
  70         }
  71 }
  72
  73
  74 /**
  75  * Collection of static functions for sending mail
  76  */
  77 class UserMailer {
  78         /**
  79          * Send mail using a PEAR mailer
  80          */
  81         protected static function sendWithPear($mailer, $dest, $headers, $body)
  82         {
  83                 $mailResult = $mailer->send($dest, $headers, $body);
  84
  85                 # Based on the result return an error string,
  86                 if( PEAR::isError( $mailResult ) ) {
  87                         wfDebug( "PEAR::Mail failed: " . $mailResult->getMessage() . "\n" );
  88                         return new WikiError( $mailResult->getMessage() );
  89                 } else {
  90                         return true;
  91                 }
  92         }
  93
  94         /**
  95          * This function will perform a direct (authenticated) login to
  96          * a SMTP Server to use for mail relaying if 'wgSMTP' specifies an
  97          * array of parameters. It requires PEAR:Mail to do that.
  98          * Otherwise it just uses the standard PHP 'mail' function.
  99          *
 100          * @param $to MailAddress: recipient's email
 101          * @param $from MailAddress: sender's email
 102          * @param $subject String: email's subject.
 103          * @param $body String: email's text.
 104          * @param $replyto String: optional reply-to email (default: null).
 105          * @param $contentType String: optional custom Content-Type
 106          * @return mixed True on success, a WikiError object on failure.
 107          */
 108         static function send( $to, $from, $subject, $body, $replyto=null, $contentType=null ) {
 109                 global $wgSMTP, $wgOutputEncoding, $wgErrorString, $wgEnotifImpersonal;
 110                 global $wgEnotifMaxRecips;
 111
 112                 if ( is_array( $to ) ) {
 113                         wfDebug( __METHOD__.': sending mail to ' . implode( ',', $to ) . "\n" );
 114                 } else {
 115                         wfDebug( __METHOD__.': sending mail to ' . implode( ',', array( $to->toString() ) ) . "\n" );
 116                 }
 117
 118                 if (is_array( $wgSMTP )) {
 119                         require_once( 'Mail.php' );
 120
 121                         $msgid = str_replace(" ", "_", microtime());
 122                         if (function_exists('posix_getpid'))
 123                                 $msgid .= '.' . posix_getpid();
 124
 125                         if (is_array($to)) {
 126                                 $dest = array();
 127                                 foreach ($to as $u)
 128                                         $dest[] = $u->address;
 129                         } else
 130                                 $dest = $to->address;
 131
 132                         $headers['From'] = $from->toString();
 133
 134                         if ($wgEnotifImpersonal) {
 135                                 $headers['To'] = 'undisclosed-recipients:;';
 136                         }
 137                         else {
 138                                 $headers['To'] = implode( ", ", (array )$dest );
 139                         }
 140
 141                         if ( $replyto ) {
 142                                 $headers['Reply-To'] = $replyto->toString();
 143                         }
 144                         $headers['Subject'] = wfQuotedPrintable( $subject );
 145                         $headers['Date'] = date( 'r' );
 146                         $headers['MIME-Version'] = '1.0';
 147                         $headers['Content-type'] = (is_null($contentType) ?
 148                                         'text/plain; charset='.$wgOutputEncoding : $contentType);
 149                         $headers['Content-transfer-encoding'] = '8bit';
 150                         $headers['Message-ID'] = "<$msgid@" . $wgSMTP['IDHost'] . '>'; // FIXME
 151                         $headers['X-Mailer'] = 'MediaWiki mailer';
 152
 153                         // Create the mail object using the Mail::factory method
 154                         $mail_object =& Mail::factory('smtp', $wgSMTP);
 155                         if( PEAR::isError( $mail_object ) ) {
 156                                 wfDebug( "PEAR::Mail factory failed: " . $mail_object->getMessage() . "\n" );
 157                                 return new WikiError( $mail_object->getMessage() );
 158                         }
 159
 160                         wfDebug( "Sending mail via PEAR::Mail to $dest\n" );
 161                         $chunks = array_chunk( (array)$dest, $wgEnotifMaxRecips );
 162                         foreach ($chunks as $chunk) {
 163                                 $e = self::sendWithPear($mail_object, $chunk, $headers, $body);
 164                                 if( WikiError::isError( $e ) )
 165                                         return $e;
 166                         }
 167                 } else  {
 168                         # In the following $headers = expression we removed "Reply-To: {$from}\r\n" , because it is treated differently
 169                         # (fifth parameter of the PHP mail function, see some lines below)
 170
 171                         # Line endings need to be different on Unix and Windows due to
 172                         # the bug described at http://trac.wordpress.org/ticket/2603
 173                         if ( wfIsWindows() ) {
 174                                 $body = str_replace( "\n", "\r\n", $body );
 175                                 $endl = "\r\n";
 176                         } else {
 177                                 $endl = "\n";
 178                         }
 179                         $ctype = (is_null($contentType) ?
 180                                         'text/plain; charset='.$wgOutputEncoding : $contentType);
 181                         $headers =
 182                                 "MIME-Version: 1.0$endl" .
 183                                 "Content-type: $ctype$endl" .
 184                                 "Content-Transfer-Encoding: 8bit$endl" .
 185                                 "X-Mailer: MediaWiki mailer$endl".
 186                                 'From: ' . $from->toString();
 187                         if ($replyto) {
 188                                 $headers .= "{$endl}Reply-To: " . $replyto->toString();
 189                         }
 190
 191                         $wgErrorString = '';
 192                         $html_errors = ini_get( 'html_errors' );
 193                         ini_set( 'html_errors', '0' );
 194                         set_error_handler( array( 'UserMailer', 'errorHandler' ) );
 195                         wfDebug( "Sending mail via internal mail() function\n" );
 196
 197                         if (function_exists('mail')) {
 198                                 if (is_array($to)) {
 199                                         foreach ($to as $recip) {
 200                                                 $sent = mail( $recip->toString(), wfQuotedPrintable( $subject ), $body, $headers );
 201                                         }
 202                                 } else {
 203                                         $sent = mail( $to->toString(), wfQuotedPrintable( $subject ), $body, $headers );
 204                                 }
 205                         } else {
 206                                 $wgErrorString = 'PHP is not configured to send mail';
 207                         }
 208
 209                         restore_error_handler();
 210                         ini_set( 'html_errors', $html_errors );
 211
 212                         if ( $wgErrorString ) {
 213                                 wfDebug( "Error sending mail: $wgErrorString\n" );
 214                                 return new WikiError( $wgErrorString );
 215                         } elseif (! $sent) {
 216                                 //mail function only tells if there's an error
 217                                 wfDebug( "Error sending mail\n" );
 218                                 return new WikiError( 'mailer error' );
 219                         } else {
 220                                 return true;
 221                         }
 222                 }
 223         }
 224
 225         /**
 226          * Get the mail error message in global $wgErrorString
 227          *
 228          * @param $code Integer: error number
 229          * @param $string String: error message
 230          */
 231         static function errorHandler( $code, $string ) {
 232                 global $wgErrorString;
 233                 $wgErrorString = preg_replace( '/^mail\(\)(\s*\[.*?\])?: /', '', $string );
 234         }
 235
 236         /**
 237          * Converts a string into a valid RFC 822 "phrase", such as is used for the sender name
 238          */
 239         static function rfc822Phrase( $phrase ) {
 240                 $phrase = strtr( $phrase, array( "\r" => '', "\n" => '', '"' => '' ) );
 241                 return '"' . $phrase . '"';
 242         }
 243 }
 244
 245 /**
 246  * This module processes the email notifications when the current page is
 247  * changed. It looks up the table watchlist to find out which users are watching
 248  * that page.
 249  *
 250  * The current implementation sends independent emails to each watching user for
 251  * the following reason:
 252  *
 253  * - Each watching user will be notified about the page edit time expressed in
 254  * his/her local time (UTC is shown additionally). To achieve this, we need to
 255  * find the individual timeoffset of each watching user from the preferences..
 256  *
 257  * Suggested improvement to slack down the number of sent emails: We could think
 258  * of sending out bulk mails (bcc:user1,user2...) for all these users having the
 259  * same timeoffset in their preferences.
 260  *
 261  * Visit the documentation pages under http://meta.wikipedia.com/Enotif
 262  *
 263  *
 264  */
 265 class EmailNotification {
 266         private $to, $subject, $body, $replyto, $from;
 267         private $user, $title, $timestamp, $summary, $minorEdit, $oldid, $composed_common, $editor;
 268         private $mailTargets = array();
 269
 270         /**
 271          * Send emails corresponding to the user $editor editing the page $title.
 272          * Also updates wl_notificationtimestamp.
 273          *
 274          * May be deferred via the job queue.
 275          *
 276          * @param $editor User object
 277          * @param $title Title object
 278          * @param $timestamp
 279          * @param $summary
 280          * @param $minorEdit
 281          * @param $oldid (default: false)
 282          */
 283         function notifyOnPageChange($editor, $title, $timestamp, $summary, $minorEdit, $oldid = false) {
 284                 global $wgEnotifUseJobQ;
 285
 286                 if( $title->getNamespace() < 0 )
 287                         return;
 288
 289                 if ($wgEnotifUseJobQ) {
 290                         $params = array(
 291                                 "editor" => $editor->getName(),
 292                                 "editorID" => $editor->getID(),
 293                                 "timestamp" => $timestamp,
 294                                 "summary" => $summary,
 295                                 "minorEdit" => $minorEdit,
 296                                 "oldid" => $oldid);
 297                         $job = new EnotifNotifyJob( $title, $params );
 298                         $job->insert();
 299                 } else {
 300                         $this->actuallyNotifyOnPageChange($editor, $title, $timestamp, $summary, $minorEdit, $oldid);
 301                 }
 302
 303         }
 304
 305         /*
 306          * Immediate version of notifyOnPageChange().
 307          *
 308          * Send emails corresponding to the user $editor editing the page $title.
 309          * Also updates wl_notificationtimestamp.
 310          *
 311          * @param $editor User object
 312          * @param $title Title object
 313          * @param $timestamp
 314          * @param $summary
 315          * @param $minorEdit
 316          * @param $oldid (default: false)
 317          */
 318         function actuallyNotifyOnPageChange($editor, $title, $timestamp, $summary, $minorEdit, $oldid=false) {
 319
 320                 # we use $wgPasswordSender as sender's address
 321                 global $wgEnotifWatchlist;
 322                 global $wgEnotifMinorEdits, $wgEnotifUserTalk, $wgShowUpdatedMarker;
 323                 global $wgEnotifImpersonal;
 324
 325                 wfProfileIn( __METHOD__ );
 326
 327                 # The following code is only run, if several conditions are met:
 328                 # 1. EmailNotification for pages (other than user_talk pages) must be enabled
 329                 # 2. minor edits (changes) are only regarded if the global flag indicates so
 330
 331                 $isUserTalkPage = ($title->getNamespace() == NS_USER_TALK);
 332                 $enotifusertalkpage = ($isUserTalkPage && $wgEnotifUserTalk);
 333                 $enotifwatchlistpage = $wgEnotifWatchlist;
 334
 335                 $this->title = $title;
 336                 $this->timestamp = $timestamp;
 337                 $this->summary = $summary;
 338                 $this->minorEdit = $minorEdit;
 339                 $this->oldid = $oldid;
 340                 $this->editor = $editor;
 341                 $this->composed_common = false;
 342
 343                 $userTalkId = false;
 344
 345                 if ( (!$minorEdit || $wgEnotifMinorEdits) ) {
 346                         if ( $wgEnotifUserTalk && $isUserTalkPage ) {
 347                                 $targetUser = User::newFromName( $title->getText() );
 348                                 if ( !$targetUser || $targetUser->isAnon() ) {
 349                                         wfDebug( __METHOD__.": user talk page edited, but user does not exist\n" );
 350                                 } elseif ( $targetUser->getId() == $editor->getId() ) {
 351                                         wfDebug( __METHOD__.": user edited their own talk page, no notification sent\n" );
 352                                 } elseif( $targetUser->getOption( 'enotifusertalkpages' ) ) {
 353                                         if( $targetUser->isEmailConfirmed() ) {
 354                                                 wfDebug( __METHOD__.": sending talk page update notification\n" );
 355                                                 $this->compose( $targetUser );
 356                                                 $userTalkId = $targetUser->getId();
 357                                         } else {
 358                                                 wfDebug( __METHOD__.": talk page owner doesn't have validated email\n" );
 359                                         }
 360                                 } else {
 361                                         wfDebug( __METHOD__.": talk page owner doesn't want notifications\n" );
 362                                 }
 363                         }
 364
 365                         if ( $wgEnotifWatchlist ) {
 366                                 // Send updates to watchers other than the current editor
 367                                 $userCondition = 'wl_user != ' . $editor->getID();
 368                                 if ( $userTalkId !== false ) {
 369                                         // Already sent an email to this person
 370                                         $userCondition .= ' AND wl_user != ' . intval( $userTalkId );
 371                                 }
 372                                 $dbr = wfGetDB( DB_SLAVE );
 373
 374                                 list( $user ) = $dbr->tableNamesN( 'user' );
 375
 376                                 $res = $dbr->select( array( 'watchlist', 'user' ),
 377                                         array( "$user.*" ),
 378                                         array(
 379                                                 'wl_user=user_id',
 380                                                 'wl_title' => $title->getDBkey(),
 381                                                 'wl_namespace' => $title->getNamespace(),
 382                                                 $userCondition,
 383                                                 'wl_notificationtimestamp IS NULL',
 384                                         ), __METHOD__ );
 385                                 $userArray = UserArray::newFromResult( $res );
 386
 387                                 foreach ( $userArray as $watchingUser ) {
 388                                         if ( $watchingUser->getOption( 'enotifwatchlistpages' ) &&
 389                                                 ( !$minorEdit || $watchingUser->getOption('enotifminoredits') ) &&
 390                                                 $watchingUser->isEmailConfirmed() )
 391                                         {
 392                                                 $this->compose( $watchingUser );
 393                                         }
 394                                 }
 395                         }
 396                 }
 397
 398                 global $wgUsersNotifiedOnAllChanges;
 399                 foreach ( $wgUsersNotifiedOnAllChanges as $name ) {
 400                         $user = User::newFromName( $name );
 401                         $this->compose( $user );
 402                 }
 403
 404                 $this->sendMails();
 405
 406                 $latestTimestamp = Revision::getTimestampFromId( $title, $title->getLatestRevID() );
 407                 // Do not update watchlists if something else already did.
 408                 if ( $timestamp >= $latestTimestamp && ($wgShowUpdatedMarker || $wgEnotifWatchlist) ) {
 409                         # Mark the changed watch-listed page with a timestamp, so that the page is
 410                         # listed with an "updated since your last visit" icon in the watch list. Do
 411                         # not do this to users for their own edits.
 412                         $dbw = wfGetDB( DB_MASTER );
 413                         $dbw->update( 'watchlist',
 414                                 array( /* SET */
 415                                         'wl_notificationtimestamp' => $dbw->timestamp($timestamp)
 416                                 ), array( /* WHERE */
 417                                         'wl_title' => $title->getDBkey(),
 418                                         'wl_namespace' => $title->getNamespace(),
 419                                         'wl_notificationtimestamp IS NULL',
 420                                         'wl_user != ' . $editor->getID()
 421                                 ), __METHOD__
 422                         );
 423                 }
 424
 425                 wfProfileOut( __METHOD__ );
 426         } # function NotifyOnChange
 427
 428         /**
 429          * @private
 430          */
 431         function composeCommonMailtext() {
 432                 global $wgPasswordSender, $wgNoReplyAddress;
 433                 global $wgEnotifFromEditor, $wgEnotifRevealEditorAddress;
 434                 global $wgEnotifImpersonal, $wgEnotifUseRealName;
 435
 436                 $this->composed_common = true;
 437
 438                 $summary = ($this->summary == '') ? ' - ' : $this->summary;
 439                 $medit   = ($this->minorEdit) ? wfMsg( 'minoredit' ) : '';
 440
 441                 # You as the WikiAdmin and Sysops can make use of plenty of
 442                 # named variables when composing your notification emails while
 443                 # simply editing the Meta pages
 444
 445                 $subject = wfMsgForContent( 'enotif_subject' );
 446                 $body    = wfMsgForContent( 'enotif_body' );
 447                 $from    = ''; /* fail safe */
 448                 $replyto = ''; /* fail safe */
 449                 $keys    = array();
 450
 451                 # regarding the use of oldid as an indicator for the last visited version, see also
 452                 # http://bugzilla.wikipeda.org/show_bug.cgi?id=603 "Delete + undelete cycle doesn't preserve old_id"
 453                 # However, in the case of a new page which is already watched, we have no previous version to compare
 454                 if( $this->oldid ) {
 455                         $difflink = $this->title->getFullUrl( 'diff=0&oldid=' . $this->oldid );
 456                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_lastvisited', $difflink );
 457                         $keys['$OLDID']   = $this->oldid;
 458                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'changed' );
 459                 } else {
 460                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_newpagetext' );
 461                         # clear $OLDID placeholder in the message template
 462                         $keys['$OLDID']   = '';
 463                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'created' );
 464                 }
 465
 466                 if ($wgEnotifImpersonal && $this->oldid)
 467                         /*
 468                          * For impersonal mail, show a diff link to the last
 469                          * revision.
 470                          */
 471                         $keys['$NEWPAGE'] = wfMsgForContent('enotif_lastdiff',
 472                                         $this->title->getFullURL("oldid={$this->oldid}&diff=prev"));
 473
 474                 $body = strtr( $body, $keys );
 475                 $pagetitle = $this->title->getPrefixedText();
 476                 $keys['$PAGETITLE']          = $pagetitle;
 477                 $keys['$PAGETITLE_URL']      = $this->title->getFullUrl();
 478
 479                 $keys['$PAGEMINOREDIT']      = $medit;
 480                 $keys['$PAGESUMMARY']        = $summary;
 481
 482                 $subject = strtr( $subject, $keys );
 483
 484                 # Reveal the page editor's address as REPLY-TO address only if
 485                 # the user has not opted-out and the option is enabled at the
 486                 # global configuration level.
 487                 $editor = $this->editor;
 488                 $name    = $wgEnotifUseRealName ? $editor->getRealName() : $editor->getName();
 489                 $adminAddress = new MailAddress( $wgPasswordSender, 'WikiAdmin' );
 490                 $editorAddress = new MailAddress( $editor );
 491                 if( $wgEnotifRevealEditorAddress
 492                     && ( $editor->getEmail() != '' )
 493                     && $editor->getOption( 'enotifrevealaddr' ) ) {
 494                         if( $wgEnotifFromEditor ) {
 495                                 $from    = $editorAddress;
 496                         } else {
 497                                 $from    = $adminAddress;
 498                                 $replyto = $editorAddress;
 499                         }
 500                 } else {
 501                         $from    = $adminAddress;
 502                         $replyto = new MailAddress( $wgNoReplyAddress );
 503                 }
 504
 505                 if( $editor->isIP( $name ) ) {
 506                         #real anon (user:xxx.xxx.xxx.xxx)
 507                         $utext = wfMsgForContent('enotif_anon_editor', $name);
 508                         $subject = str_replace('$PAGEEDITOR', $utext, $subject);
 509                         $keys['$PAGEEDITOR']       = $utext;
 510                         $keys['$PAGEEDITOR_EMAIL'] = wfMsgForContent( 'noemailtitle' );
 511                 } else {
 512                         $subject = str_replace('$PAGEEDITOR', $name, $subject);
 513                         $keys['$PAGEEDITOR']          = $name;
 514                         $emailPage = SpecialPage::getSafeTitleFor( 'Emailuser', $name );
 515                         $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getFullUrl();
 516                 }
 517                 $userPage = $editor->getUserPage();
 518                 $keys['$PAGEEDITOR_WIKI'] = $userPage->getFullUrl();
 519                 $body = strtr( $body, $keys );
 520                 $body = wordwrap( $body, 72 );
 521
 522                 # now save this as the constant user-independent part of the message
 523                 $this->from    = $from;
 524                 $this->replyto = $replyto;
 525                 $this->subject = $subject;
 526                 $this->body    = $body;
 527         }
 528
 529         /**
 530          * Compose a mail to a given user and either queue it for sending, or send it now,
 531          * depending on settings.
 532          *
 533          * Call sendMails() to send any mails that were queued.
 534          */
 535         function compose( $user ) {
 536                 global $wgEnotifImpersonal;
 537
 538                 if ( !$this->composed_common )
 539                         $this->composeCommonMailtext();
 540
 541                 if ( $wgEnotifImpersonal ) {
 542                         $this->mailTargets[] = new MailAddress( $user );
 543                 } else {
 544                         $this->sendPersonalised( $user );
 545                 }
 546         }
 547
 548         /**
 549          * Send any queued mails
 550          */
 551         function sendMails() {
 552                 global $wgEnotifImpersonal;
 553                 if ( $wgEnotifImpersonal ) {
 554                         $this->sendImpersonal( $this->mailTargets );
 555                 }
 556         }
 557
 558         /**
 559          * Does the per-user customizations to a notification e-mail (name,
 560          * timestamp in proper timezone, etc) and sends it out.
 561          * Returns true if the mail was sent successfully.
 562          *
 563          * @param User $watchingUser
 564          * @param object $mail
 565          * @return bool
 566          * @private
 567          */
 568         function sendPersonalised( $watchingUser ) {
 569                 global $wgLang, $wgEnotifUseRealName;
 570                 // From the PHP manual:
 571                 //     Note:  The to parameter cannot be an address in the form of "Something <someone@example.com>".
 572                 //     The mail command will not parse this properly while talking with the MTA.
 573                 $to = new MailAddress( $watchingUser );
 574                 $name = $wgEnotifUseRealName ? $watchingUser->getRealName() : $watchingUser->getName();
 575                 $body = str_replace( '$WATCHINGUSERNAME', $name , $this->body );
 576
 577                 $timecorrection = $watchingUser->getOption( 'timecorrection' );
 578
 579                 # $PAGEEDITDATE is the time and date of the page change
 580                 # expressed in terms of individual local time of the notification
 581                 # recipient, i.e. watching user
 582                 $body = str_replace('$PAGEEDITDATE',
 583                         $wgLang->timeanddate( $this->timestamp, true, false, $timecorrection ),
 584                         $body);
 585
 586                 return UserMailer::send($to, $this->from, $this->subject, $body, $this->replyto);
 587         }
 588
 589         /**
 590          * Same as sendPersonalised but does impersonal mail suitable for bulk
 591          * mailing.  Takes an array of MailAddress objects.
 592          */
 593         function sendImpersonal( $addresses ) {
 594                 global $wgLang;
 595
 596                 if (empty($addresses))
 597                         return;
 598
 599                 $body = str_replace(
 600                                 array(  '$WATCHINGUSERNAME',
 601                                         '$PAGEEDITDATE'),
 602                                 array(  wfMsgForContent('enotif_impersonal_salutation'),
 603                                         $wgLang->timeanddate($this->timestamp, true, false, false)),
 604                                 $this->body);
 605
 606                 return UserMailer::send($addresses, $this->from, $this->subject, $body, $this->replyto);
 607         }
 608
 609 } # end of class EmailNotification
 610
 611 /**
 612  * Backwards compatibility functions
 613  */
 614 function wfRFC822Phrase( $s ) {
 615         return UserMailer::rfc822Phrase( $s );
 616 }
 617
 618 function userMailer( $to, $from, $subject, $body, $replyto=null ) {
 619         return UserMailer::send( $to, $from, $subject, $body, $replyto );
 620 }