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->realName = 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 MailAddress: 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, $wgEnotifWatchlist, $wgShowUpdatedMarker;
 285
 286                 if ($title->getNamespace() < 0)
 287                         return;
 288
 289                 // Build a list of users to notfiy
 290                 $watchers = array();
 291                 if ($wgEnotifWatchlist || $wgShowUpdatedMarker) {
 292                         $dbw = wfGetDB( DB_MASTER );
 293                         $res = $dbw->select( array( 'watchlist' ),
 294                                 array( 'wl_user' ),
 295                                 array(
 296                                         'wl_title' => $title->getDBkey(),
 297                                         'wl_namespace' => $title->getNamespace(),
 298                                         'wl_user != ' . intval( $editor->getID() ),
 299                                         'wl_notificationtimestamp IS NULL',
 300                                 ), __METHOD__
 301                         );
 302                         while ($row = $dbw->fetchObject( $res ) ) {
 303                                 $watchers[] = intval( $row->wl_user );
 304                         }
 305                         if ($watchers) {
 306                                 // Update wl_notificationtimestamp for all watching users except
 307                                 // the editor
 308                                 $dbw->begin();
 309                                 $dbw->update( 'watchlist',
 310                                         array( /* SET */
 311                                                 'wl_notificationtimestamp' => $dbw->timestamp( $timestamp )
 312                                         ), array( /* WHERE */
 313                                                 'wl_user' => $watchers
 314                                         ), __METHOD__
 315                                 );
 316                                 $dbw->commit();
 317                         }
 318                 }
 319
 320                 if ($wgEnotifUseJobQ) {
 321                         $params = array(
 322                                 "editor" => $editor->getName(),
 323                                 "editorID" => $editor->getID(),
 324                                 "timestamp" => $timestamp,
 325                                 "summary" => $summary,
 326                                 "minorEdit" => $minorEdit,
 327                                 "oldid" => $oldid,
 328                                 "watchers" => $watchers);
 329                         $job = new EnotifNotifyJob( $title, $params );
 330                         $job->insert();
 331                 } else {
 332                         $this->actuallyNotifyOnPageChange( $editor, $title, $timestamp, $summary, $minorEdit, $oldid, $watchers );
 333                 }
 334
 335         }
 336
 337         /*
 338          * Immediate version of notifyOnPageChange().
 339          *
 340          * Send emails corresponding to the user $editor editing the page $title.
 341          * Also updates wl_notificationtimestamp.
 342          *
 343          * @param $editor User object
 344          * @param $title Title object
 345          * @param $timestamp string Edit timestamp
 346          * @param $summary string Edit summary
 347          * @param $minorEdit bool
 348          * @param $oldid int Revision ID
 349          * @param $watchers array of user IDs
 350          */
 351         function actuallyNotifyOnPageChange($editor, $title, $timestamp, $summary, $minorEdit, $oldid, $watchers) {
 352                 # we use $wgPasswordSender as sender's address
 353                 global $wgEnotifWatchlist;
 354                 global $wgEnotifMinorEdits, $wgEnotifUserTalk;
 355                 global $wgEnotifImpersonal;
 356
 357                 wfProfileIn( __METHOD__ );
 358
 359                 # The following code is only run, if several conditions are met:
 360                 # 1. EmailNotification for pages (other than user_talk pages) must be enabled
 361                 # 2. minor edits (changes) are only regarded if the global flag indicates so
 362
 363                 $isUserTalkPage = ($title->getNamespace() == NS_USER_TALK);
 364                 $enotifusertalkpage = ($isUserTalkPage && $wgEnotifUserTalk);
 365                 $enotifwatchlistpage = $wgEnotifWatchlist;
 366
 367                 $this->title = $title;
 368                 $this->timestamp = $timestamp;
 369                 $this->summary = $summary;
 370                 $this->minorEdit = $minorEdit;
 371                 $this->oldid = $oldid;
 372                 $this->editor = $editor;
 373                 $this->composed_common = false;
 374
 375                 $userTalkId = false;
 376
 377                 if ( !$minorEdit || ($wgEnotifMinorEdits && !$editor->isAllowed('nominornewtalk') ) ) {
 378                         if ( $wgEnotifUserTalk && $isUserTalkPage ) {
 379                                 $targetUser = User::newFromName( $title->getText() );
 380                                 if ( !$targetUser || $targetUser->isAnon() ) {
 381                                         wfDebug( __METHOD__.": user talk page edited, but user does not exist\n" );
 382                                 } elseif ( $targetUser->getId() == $editor->getId() ) {
 383                                         wfDebug( __METHOD__.": user edited their own talk page, no notification sent\n" );
 384                                 } elseif( $targetUser->getOption( 'enotifusertalkpages' ) ) {
 385                                         if( $targetUser->isEmailConfirmed() ) {
 386                                                 wfDebug( __METHOD__.": sending talk page update notification\n" );
 387                                                 $this->compose( $targetUser );
 388                                                 $userTalkId = $targetUser->getId();
 389                                         } else {
 390                                                 wfDebug( __METHOD__.": talk page owner doesn't have validated email\n" );
 391                                         }
 392                                 } else {
 393                                         wfDebug( __METHOD__.": talk page owner doesn't want notifications\n" );
 394                                 }
 395                         }
 396
 397                         if ( $wgEnotifWatchlist ) {
 398                                 // Send updates to watchers other than the current editor
 399                                 $userArray = UserArray::newFromIDs( $watchers );
 400                                 foreach ( $userArray as $watchingUser ) {
 401                                         if ( $watchingUser->getOption( 'enotifwatchlistpages' ) &&
 402                                                 ( !$minorEdit || $watchingUser->getOption('enotifminoredits') ) &&
 403                                                 $watchingUser->isEmailConfirmed() &&
 404                                                 $watchingUser->getID() != $userTalkId )
 405                                         {
 406                                                 $this->compose( $watchingUser );
 407                                         }
 408                                 }
 409                         }
 410                 }
 411
 412                 global $wgUsersNotifiedOnAllChanges;
 413                 foreach ( $wgUsersNotifiedOnAllChanges as $name ) {
 414                         $user = User::newFromName( $name );
 415                         $this->compose( $user );
 416                 }
 417
 418                 $this->sendMails();
 419                 wfProfileOut( __METHOD__ );
 420         }
 421
 422         /**
 423          * @private
 424          */
 425         function composeCommonMailtext() {
 426                 global $wgPasswordSender, $wgNoReplyAddress;
 427                 global $wgEnotifFromEditor, $wgEnotifRevealEditorAddress;
 428                 global $wgEnotifImpersonal, $wgEnotifUseRealName;
 429
 430                 $this->composed_common = true;
 431
 432                 $summary = ($this->summary == '') ? ' - ' : $this->summary;
 433                 $medit   = ($this->minorEdit) ? wfMsg( 'minoredit' ) : '';
 434
 435                 # You as the WikiAdmin and Sysops can make use of plenty of
 436                 # named variables when composing your notification emails while
 437                 # simply editing the Meta pages
 438
 439                 $subject = wfMsgForContent( 'enotif_subject' );
 440                 $body    = wfMsgForContent( 'enotif_body' );
 441                 $from    = ''; /* fail safe */
 442                 $replyto = ''; /* fail safe */
 443                 $keys    = array();
 444
 445                 if( $this->oldid ) {
 446                         $difflink = $this->title->getFullUrl( 'diff=0&oldid=' . $this->oldid );
 447                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_lastvisited', $difflink );
 448                         $keys['$OLDID']   = $this->oldid;
 449                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'changed' );
 450                 } else {
 451                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_newpagetext' );
 452                         # clear $OLDID placeholder in the message template
 453                         $keys['$OLDID']   = '';
 454                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'created' );
 455                 }
 456
 457                 if ($wgEnotifImpersonal && $this->oldid)
 458                         /*
 459                          * For impersonal mail, show a diff link to the last
 460                          * revision.
 461                          */
 462                         $keys['$NEWPAGE'] = wfMsgForContent('enotif_lastdiff',
 463                                         $this->title->getFullURL("oldid={$this->oldid}&diff=prev"));
 464
 465                 $body = strtr( $body, $keys );
 466                 $pagetitle = $this->title->getPrefixedText();
 467                 $keys['$PAGETITLE']          = $pagetitle;
 468                 $keys['$PAGETITLE_URL']      = $this->title->getFullUrl();
 469
 470                 $keys['$PAGEMINOREDIT']      = $medit;
 471                 $keys['$PAGESUMMARY']        = $summary;
 472
 473                 $subject = strtr( $subject, $keys );
 474
 475                 # Reveal the page editor's address as REPLY-TO address only if
 476                 # the user has not opted-out and the option is enabled at the
 477                 # global configuration level.
 478                 $editor = $this->editor;
 479                 $name    = $wgEnotifUseRealName ? $editor->getRealName() : $editor->getName();
 480                 $adminAddress = new MailAddress( $wgPasswordSender, 'WikiAdmin' );
 481                 $editorAddress = new MailAddress( $editor );
 482                 if( $wgEnotifRevealEditorAddress
 483                     && ( $editor->getEmail() != '' )
 484                     && $editor->getOption( 'enotifrevealaddr' ) ) {
 485                         if( $wgEnotifFromEditor ) {
 486                                 $from    = $editorAddress;
 487                         } else {
 488                                 $from    = $adminAddress;
 489                                 $replyto = $editorAddress;
 490                         }
 491                 } else {
 492                         $from    = $adminAddress;
 493                         $replyto = new MailAddress( $wgNoReplyAddress );
 494                 }
 495
 496                 if( $editor->isIP( $name ) ) {
 497                         #real anon (user:xxx.xxx.xxx.xxx)
 498                         $utext = wfMsgForContent('enotif_anon_editor', $name);
 499                         $subject = str_replace('$PAGEEDITOR', $utext, $subject);
 500                         $keys['$PAGEEDITOR']       = $utext;
 501                         $keys['$PAGEEDITOR_EMAIL'] = wfMsgForContent( 'noemailtitle' );
 502                 } else {
 503                         $subject = str_replace('$PAGEEDITOR', $name, $subject);
 504                         $keys['$PAGEEDITOR']          = $name;
 505                         $emailPage = SpecialPage::getSafeTitleFor( 'Emailuser', $name );
 506                         $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getFullUrl();
 507                 }
 508                 $userPage = $editor->getUserPage();
 509                 $keys['$PAGEEDITOR_WIKI'] = $userPage->getFullUrl();
 510                 $body = strtr( $body, $keys );
 511                 $body = wordwrap( $body, 72 );
 512
 513                 # now save this as the constant user-independent part of the message
 514                 $this->from    = $from;
 515                 $this->replyto = $replyto;
 516                 $this->subject = $subject;
 517                 $this->body    = $body;
 518         }
 519
 520         /**
 521          * Compose a mail to a given user and either queue it for sending, or send it now,
 522          * depending on settings.
 523          *
 524          * Call sendMails() to send any mails that were queued.
 525          */
 526         function compose( $user ) {
 527                 global $wgEnotifImpersonal;
 528
 529                 if ( !$this->composed_common )
 530                         $this->composeCommonMailtext();
 531
 532                 if ( $wgEnotifImpersonal ) {
 533                         $this->mailTargets[] = new MailAddress( $user );
 534                 } else {
 535                         $this->sendPersonalised( $user );
 536                 }
 537         }
 538
 539         /**
 540          * Send any queued mails
 541          */
 542         function sendMails() {
 543                 global $wgEnotifImpersonal;
 544                 if ( $wgEnotifImpersonal ) {
 545                         $this->sendImpersonal( $this->mailTargets );
 546                 }
 547         }
 548
 549         /**
 550          * Does the per-user customizations to a notification e-mail (name,
 551          * timestamp in proper timezone, etc) and sends it out.
 552          * Returns true if the mail was sent successfully.
 553          *
 554          * @param User $watchingUser
 555          * @param object $mail
 556          * @return bool
 557          * @private
 558          */
 559         function sendPersonalised( $watchingUser ) {
 560                 global $wgLang, $wgEnotifUseRealName;
 561                 // From the PHP manual:
 562                 //     Note:  The to parameter cannot be an address in the form of "Something <someone@example.com>".
 563                 //     The mail command will not parse this properly while talking with the MTA.
 564                 $to = new MailAddress( $watchingUser );
 565                 $name = $wgEnotifUseRealName ? $watchingUser->getRealName() : $watchingUser->getName();
 566                 $body = str_replace( '$WATCHINGUSERNAME', $name , $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 }