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          * @param $contentType String: optional custom Content-Type
 102          * @return mixed True on success, a WikiError object on failure.
 103          */
 104         static function send( $to, $from, $subject, $body, $replyto=null, $contentType=null ) {
 105                 global $wgSMTP, $wgOutputEncoding, $wgErrorString, $wgEnotifImpersonal;
 106                 global $wgEnotifMaxRecips;
 107
 108                 if ( is_array( $to ) ) {
 109                         wfDebug( __METHOD__.': sending mail to ' . implode( ',', $to ) . "\n" );
 110                 } else {
 111                         wfDebug( __METHOD__.': sending mail to ' . implode( ',', array( $to->toString() ) ) . "\n" );
 112                 }
 113
 114                 if (is_array( $wgSMTP )) {
 115                         require_once( 'Mail.php' );
 116
 117                         $msgid = str_replace(" ", "_", microtime());
 118                         if (function_exists('posix_getpid'))
 119                                 $msgid .= '.' . posix_getpid();
 120
 121                         if (is_array($to)) {
 122                                 $dest = array();
 123                                 foreach ($to as $u)
 124                                         $dest[] = $u->address;
 125                         } else
 126                                 $dest = $to->address;
 127
 128                         $headers['From'] = $from->toString();
 129
 130                         if ($wgEnotifImpersonal) {
 131                                 $headers['To'] = 'undisclosed-recipients:;';
 132                         }
 133                         else {
 134                                 $headers['To'] = implode( ", ", (array )$dest );
 135                         }
 136
 137                         if ( $replyto ) {
 138                                 $headers['Reply-To'] = $replyto->toString();
 139                         }
 140                         $headers['Subject'] = wfQuotedPrintable( $subject );
 141                         $headers['Date'] = date( 'r' );
 142                         $headers['MIME-Version'] = '1.0';
 143                         $headers['Content-type'] = (is_null($contentType) ?
 144                                         'text/plain; charset='.$wgOutputEncoding : $contentType);
 145                         if(is_null($contentType))
 146                                 $headers['Content-type'] = 'text/plain; charset='.$wgOutputEncoding;
 147                         else
 148                                 $headers['Content-type'] = $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         /**@{{
 267          * @private
 268          */
 269         var $to, $subject, $body, $replyto, $from;
 270         var $user, $title, $timestamp, $summary, $minorEdit, $oldid, $composed_common, $editor;
 271         var $mailTargets = array();
 272
 273         /**@}}*/
 274
 275         /**
 276          * Send emails corresponding to the user $editor editing the page $title.
 277          * Also updates wl_notificationtimestamp.
 278          *
 279          * May be deferred via the job queue.
 280          *
 281          * @param $editor User object
 282          * @param $title Title object
 283          * @param $timestamp
 284          * @param $summary
 285          * @param $minorEdit
 286          * @param $oldid (default: false)
 287          */
 288         function notifyOnPageChange($editor, $title, $timestamp, $summary, $minorEdit, $oldid = false) {
 289                 global $wgEnotifUseJobQ;
 290
 291                 if( $title->getNamespace() < 0 )
 292                         return;
 293
 294                 if ($wgEnotifUseJobQ) {
 295                         $params = array(
 296                                 "editor" => $editor->getName(),
 297                                 "editorID" => $editor->getID(),
 298                                 "timestamp" => $timestamp,
 299                                 "summary" => $summary,
 300                                 "minorEdit" => $minorEdit,
 301                                 "oldid" => $oldid);
 302                         $job = new EnotifNotifyJob( $title, $params );
 303                         $job->insert();
 304                 } else {
 305                         $this->actuallyNotifyOnPageChange($editor, $title, $timestamp, $summary, $minorEdit, $oldid);
 306                 }
 307
 308         }
 309
 310         /*
 311          * Immediate version of notifyOnPageChange().
 312          *
 313          * Send emails corresponding to the user $editor editing the page $title.
 314          * Also updates wl_notificationtimestamp.
 315          *
 316          * @param $editor User object
 317          * @param $title Title object
 318          * @param $timestamp
 319          * @param $summary
 320          * @param $minorEdit
 321          * @param $oldid (default: false)
 322          */
 323         function actuallyNotifyOnPageChange($editor, $title, $timestamp, $summary, $minorEdit, $oldid=false) {
 324
 325                 # we use $wgPasswordSender as sender's address
 326                 global $wgEnotifWatchlist;
 327                 global $wgEnotifMinorEdits, $wgEnotifUserTalk, $wgShowUpdatedMarker;
 328                 global $wgEnotifImpersonal;
 329
 330                 wfProfileIn( __METHOD__ );
 331
 332                 # The following code is only run, if several conditions are met:
 333                 # 1. EmailNotification for pages (other than user_talk pages) must be enabled
 334                 # 2. minor edits (changes) are only regarded if the global flag indicates so
 335
 336                 $isUserTalkPage = ($title->getNamespace() == NS_USER_TALK);
 337                 $enotifusertalkpage = ($isUserTalkPage && $wgEnotifUserTalk);
 338                 $enotifwatchlistpage = $wgEnotifWatchlist;
 339
 340                 $this->title = $title;
 341                 $this->timestamp = $timestamp;
 342                 $this->summary = $summary;
 343                 $this->minorEdit = $minorEdit;
 344                 $this->oldid = $oldid;
 345                 $this->editor = $editor;
 346                 $this->composed_common = false;
 347
 348                 $userTalkId = false;
 349
 350                 if ( (!$minorEdit || $wgEnotifMinorEdits) ) {
 351                         if ( $wgEnotifUserTalk && $isUserTalkPage ) {
 352                                 $targetUser = User::newFromName( $title->getText() );
 353                                 if ( !$targetUser || $targetUser->isAnon() ) {
 354                                         wfDebug( __METHOD__.": user talk page edited, but user does not exist\n" );
 355                                 } elseif ( $targetUser->getId() == $editor->getId() ) {
 356                                         wfDebug( __METHOD__.": user edited their own talk page, no notification sent\n" );
 357                                 } elseif( $targetUser->getOption( 'enotifusertalkpages' ) ) {
 358                                         if( $targetUser->isEmailConfirmed() ) {
 359                                                 wfDebug( __METHOD__.": sending talk page update notification\n" );
 360                                                 $this->compose( $targetUser );
 361                                                 $userTalkId = $targetUser->getId();
 362                                         } else {
 363                                                 wfDebug( __METHOD__.": talk page owner doesn't have validated email\n" );
 364                                         }
 365                                 } else {
 366                                         wfDebug( __METHOD__.": talk page owner doesn't want notifications\n" );
 367                                 }
 368                         }
 369
 370                         if ( $wgEnotifWatchlist ) {
 371                                 // Send updates to watchers other than the current editor
 372                                 $userCondition = 'wl_user != ' . $editor->getID();
 373                                 if ( $userTalkId !== false ) {
 374                                         // Already sent an email to this person
 375                                         $userCondition .= ' AND wl_user != ' . intval( $userTalkId );
 376                                 }
 377                                 $dbr = wfGetDB( DB_SLAVE );
 378
 379                                 list( $user ) = $dbr->tableNamesN( 'user' );
 380
 381                                 $res = $dbr->select( array( 'watchlist', 'user' ),
 382                                         array( "$user.*" ),
 383                                         array(
 384                                                 'wl_user=user_id',
 385                                                 'wl_title' => $title->getDBkey(),
 386                                                 'wl_namespace' => $title->getNamespace(),
 387                                                 $userCondition,
 388                                                 'wl_notificationtimestamp IS NULL',
 389                                         ), __METHOD__ );
 390                                 $userArray = UserArray::newFromResult( $res );
 391
 392                                 foreach ( $userArray as $watchingUser ) {
 393                                         if ( $watchingUser->getOption( 'enotifwatchlistpages' ) &&
 394                                                 ( !$minorEdit || $watchingUser->getOption('enotifminoredits') ) &&
 395                                                 $watchingUser->isEmailConfirmed() )
 396                                         {
 397                                                 $this->compose( $watchingUser );
 398                                         }
 399                                 }
 400                         }
 401                 }
 402
 403                 global $wgUsersNotifiedOnAllChanges;
 404                 foreach ( $wgUsersNotifiedOnAllChanges as $name ) {
 405                         $user = User::newFromName( $name );
 406                         $this->compose( $user );
 407                 }
 408
 409                 $this->sendMails();
 410
 411                 if ( $wgShowUpdatedMarker || $wgEnotifWatchlist ) {
 412                         # Mark the changed watch-listed page with a timestamp, so that the page is
 413                         # listed with an "updated since your last visit" icon in the watch list. Do
 414                         # not do this to users for their own edits.
 415                         $dbw = wfGetDB( DB_MASTER );
 416                         $dbw->update( 'watchlist',
 417                                 array( /* SET */
 418                                         'wl_notificationtimestamp' => $dbw->timestamp($timestamp)
 419                                 ), array( /* WHERE */
 420                                         'wl_title' => $title->getDBkey(),
 421                                         'wl_namespace' => $title->getNamespace(),
 422                                         'wl_notificationtimestamp IS NULL',
 423                                         'wl_user != ' . $editor->getID()
 424                                 ), __METHOD__
 425                         );
 426                 }
 427
 428                 wfProfileOut( __METHOD__ );
 429         } # function NotifyOnChange
 430
 431         /**
 432          * @private
 433          */
 434         function composeCommonMailtext() {
 435                 global $wgPasswordSender, $wgNoReplyAddress;
 436                 global $wgEnotifFromEditor, $wgEnotifRevealEditorAddress;
 437                 global $wgEnotifImpersonal;
 438
 439                 $this->composed_common = true;
 440
 441                 $summary = ($this->summary == '') ? ' - ' : $this->summary;
 442                 $medit   = ($this->minorEdit) ? wfMsg( 'minoredit' ) : '';
 443
 444                 # You as the WikiAdmin and Sysops can make use of plenty of
 445                 # named variables when composing your notification emails while
 446                 # simply editing the Meta pages
 447
 448                 $subject = wfMsgForContent( 'enotif_subject' );
 449                 $body    = wfMsgForContent( 'enotif_body' );
 450                 $from    = ''; /* fail safe */
 451                 $replyto = ''; /* fail safe */
 452                 $keys    = array();
 453
 454                 # regarding the use of oldid as an indicator for the last visited version, see also
 455                 # http://bugzilla.wikipeda.org/show_bug.cgi?id=603 "Delete + undelete cycle doesn't preserve old_id"
 456                 # However, in the case of a new page which is already watched, we have no previous version to compare
 457                 if( $this->oldid ) {
 458                         $difflink = $this->title->getFullUrl( 'diff=0&oldid=' . $this->oldid );
 459                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_lastvisited', $difflink );
 460                         $keys['$OLDID']   = $this->oldid;
 461                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'changed' );
 462                 } else {
 463                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_newpagetext' );
 464                         # clear $OLDID placeholder in the message template
 465                         $keys['$OLDID']   = '';
 466                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'created' );
 467                 }
 468
 469                 if ($wgEnotifImpersonal && $this->oldid)
 470                         /*
 471                          * For impersonal mail, show a diff link to the last
 472                          * revision.
 473                          */
 474                         $keys['$NEWPAGE'] = wfMsgForContent('enotif_lastdiff',
 475                                         $this->title->getFullURL("oldid={$this->oldid}&diff=prev"));
 476
 477                 $body = strtr( $body, $keys );
 478                 $pagetitle = $this->title->getPrefixedText();
 479                 $keys['$PAGETITLE']          = $pagetitle;
 480                 $keys['$PAGETITLE_URL']      = $this->title->getFullUrl();
 481
 482                 $keys['$PAGEMINOREDIT']      = $medit;
 483                 $keys['$PAGESUMMARY']        = $summary;
 484
 485                 $subject = strtr( $subject, $keys );
 486
 487                 # Reveal the page editor's address as REPLY-TO address only if
 488                 # the user has not opted-out and the option is enabled at the
 489                 # global configuration level.
 490                 $editor = $this->editor;
 491                 $name    = $editor->getName();
 492                 $adminAddress = new MailAddress( $wgPasswordSender, 'WikiAdmin' );
 493                 $editorAddress = new MailAddress( $editor );
 494                 if( $wgEnotifRevealEditorAddress
 495                     && ( $editor->getEmail() != '' )
 496                     && $editor->getOption( 'enotifrevealaddr' ) ) {
 497                         if( $wgEnotifFromEditor ) {
 498                                 $from    = $editorAddress;
 499                         } else {
 500                                 $from    = $adminAddress;
 501                                 $replyto = $editorAddress;
 502                         }
 503                 } else {
 504                         $from    = $adminAddress;
 505                         $replyto = new MailAddress( $wgNoReplyAddress );
 506                 }
 507
 508                 if( $editor->isIP( $name ) ) {
 509                         #real anon (user:xxx.xxx.xxx.xxx)
 510                         $utext = wfMsgForContent('enotif_anon_editor', $name);
 511                         $subject = str_replace('$PAGEEDITOR', $utext, $subject);
 512                         $keys['$PAGEEDITOR']       = $utext;
 513                         $keys['$PAGEEDITOR_EMAIL'] = wfMsgForContent( 'noemailtitle' );
 514                 } else {
 515                         $subject = str_replace('$PAGEEDITOR', $name, $subject);
 516                         $keys['$PAGEEDITOR']          = $name;
 517                         $emailPage = SpecialPage::getSafeTitleFor( 'Emailuser', $name );
 518                         $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getFullUrl();
 519                 }
 520                 $userPage = $editor->getUserPage();
 521                 $keys['$PAGEEDITOR_WIKI'] = $userPage->getFullUrl();
 522                 $body = strtr( $body, $keys );
 523                 $body = wordwrap( $body, 72 );
 524
 525                 # now save this as the constant user-independent part of the message
 526                 $this->from    = $from;
 527                 $this->replyto = $replyto;
 528                 $this->subject = $subject;
 529                 $this->body    = $body;
 530         }
 531
 532         /**
 533          * Compose a mail to a given user and either queue it for sending, or send it now,
 534          * depending on settings.
 535          *
 536          * Call sendMails() to send any mails that were queued.
 537          */
 538         function compose( $user ) {
 539                 global $wgEnotifImpersonal;
 540
 541                 if ( !$this->composed_common )
 542                         $this->composeCommonMailtext();
 543
 544                 if ( $wgEnotifImpersonal ) {
 545                         $this->mailTargets[] = new MailAddress( $user );
 546                 } else {
 547                         $this->sendPersonalised( $user );
 548                 }
 549         }
 550
 551         /**
 552          * Send any queued mails
 553          */
 554         function sendMails() {
 555                 global $wgEnotifImpersonal;
 556                 if ( $wgEnotifImpersonal ) {
 557                         $this->sendImpersonal( $this->mailTargets );
 558                 }
 559         }
 560
 561         /**
 562          * Does the per-user customizations to a notification e-mail (name,
 563          * timestamp in proper timezone, etc) and sends it out.
 564          * Returns true if the mail was sent successfully.
 565          *
 566          * @param User $watchingUser
 567          * @param object $mail
 568          * @return bool
 569          * @private
 570          */
 571         function sendPersonalised( $watchingUser ) {
 572                 global $wgLang;
 573                 // From the PHP manual:
 574                 //     Note:  The to parameter cannot be an address in the form of "Something <someone@example.com>".
 575                 //     The mail command will not parse this properly while talking with the MTA.
 576                 $to = new MailAddress( $watchingUser );
 577                 $body = str_replace( '$WATCHINGUSERNAME', $watchingUser->getName() , $this->body );
 578
 579                 $timecorrection = $watchingUser->getOption( 'timecorrection' );
 580
 581                 # $PAGEEDITDATE is the time and date of the page change
 582                 # expressed in terms of individual local time of the notification
 583                 # recipient, i.e. watching user
 584                 $body = str_replace('$PAGEEDITDATE',
 585                         $wgLang->timeanddate( $this->timestamp, true, false, $timecorrection ),
 586                         $body);
 587
 588                 return UserMailer::send($to, $this->from, $this->subject, $body, $this->replyto);
 589         }
 590
 591         /**
 592          * Same as sendPersonalised but does impersonal mail suitable for bulk
 593          * mailing.  Takes an array of MailAddress objects.
 594          */
 595         function sendImpersonal( $addresses ) {
 596                 global $wgLang;
 597
 598                 if (empty($addresses))
 599                         return;
 600
 601                 $body = str_replace(
 602                                 array(  '$WATCHINGUSERNAME',
 603                                         '$PAGEEDITDATE'),
 604                                 array(  wfMsgForContent('enotif_impersonal_salutation'),
 605                                         $wgLang->timeanddate($this->timestamp, true, false, false)),
 606                                 $this->body);
 607
 608                 return UserMailer::send($addresses, $this->from, $this->subject, $body, $this->replyto);
 609         }
 610
 611 } # end of class EmailNotification
 612
 613 /**
 614  * Backwards compatibility functions
 615  */
 616 function wfRFC822Phrase( $s ) {
 617         return UserMailer::rfc822Phrase( $s );
 618 }
 619
 620 function userMailer( $to, $from, $subject, $body, $replyto=null ) {
 621         return UserMailer::send( $to, $from, $subject, $body, $replyto );
 622 }