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