includes/UserMailer.php

   1 <?php
   2 /**
   3  * Classes used to send e-mails
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @author <brion@pobox.com>
  22  * @author <mail@tgries.de>
  23  * @author Tim Starling
  24  */
  25
  26
  27 /**
  28  * Stores a single person's name and email address.
  29  * These are passed in via the constructor, and will be returned in SMTP
  30  * header format when requested.
  31  */
  32 class MailAddress {
  33         /**
  34          * @param $address string|User string with an email address, or a User object
  35          * @param $name String: human-readable name if a string address is given
  36          * @param $realName String: human-readable real name if a string address is given
  37          */
  38         function __construct( $address, $name = null, $realName = null ) {
  39                 if ( is_object( $address ) && $address instanceof User ) {
  40                         $this->address = $address->getEmail();
  41                         $this->name = $address->getName();
  42                         $this->realName = $address->getRealName();
  43                 } else {
  44                         $this->address = strval( $address );
  45                         $this->name = strval( $name );
  46                         $this->realName = strval( $realName );
  47                 }
  48         }
  49
  50         /**
  51          * Return formatted and quoted address to insert into SMTP headers
  52          * @return string
  53          */
  54         function toString() {
  55                 # PHP's mail() implementation under Windows is somewhat shite, and
  56                 # can't handle "Joe Bloggs <joe@bloggs.com>" format email addresses,
  57                 # so don't bother generating them
  58                 if ( $this->address ) {
  59                         if ( $this->name != '' && !wfIsWindows() ) {
  60                                 global $wgEnotifUseRealName;
  61                                 $name = ( $wgEnotifUseRealName && $this->realName ) ? $this->realName : $this->name;
  62                                 $quoted = UserMailer::quotedPrintable( $name );
  63                                 if ( strpos( $quoted, '.' ) !== false || strpos( $quoted, ',' ) !== false ) {
  64                                         $quoted = '"' . $quoted . '"';
  65                                 }
  66                                 return "$quoted <{$this->address}>";
  67                         } else {
  68                                 return $this->address;
  69                         }
  70                 }
  71         }
  72
  73         function __toString() {
  74                 return $this->toString();
  75         }
  76 }
  77
  78
  79 /**
  80  * Collection of static functions for sending mail
  81  */
  82 class UserMailer {
  83         static $mErrorString;
  84
  85         /**
  86          * Send mail using a PEAR mailer
  87          *
  88          * @param $mailer
  89          * @param $dest
  90          * @param $headers
  91          * @param $body
  92          *
  93          * @return Status
  94          */
  95         protected static function sendWithPear( $mailer, $dest, $headers, $body ) {
  96                 $mailResult = $mailer->send( $dest, $headers, $body );
  97
  98                 # Based on the result return an error string,
  99                 if ( PEAR::isError( $mailResult ) ) {
 100                         wfDebug( "PEAR::Mail failed: " . $mailResult->getMessage() . "\n" );
 101                         return Status::newFatal( 'pear-mail-error', $mailResult->getMessage() );
 102                 } else {
 103                         return Status::newGood();
 104                 }
 105         }
 106
 107         /**
 108          * This function will perform a direct (authenticated) login to
 109          * a SMTP Server to use for mail relaying if 'wgSMTP' specifies an
 110          * array of parameters. It requires PEAR:Mail to do that.
 111          * Otherwise it just uses the standard PHP 'mail' function.
 112          *
 113          * @param $to MailAddress: recipient's email (or an array of them)
 114          * @param $from MailAddress: sender's email
 115          * @param $subject String: email's subject.
 116          * @param $body String: email's text.
 117          * @param $replyto MailAddress: optional reply-to email (default: null).
 118          * @param $contentType String: optional custom Content-Type (default: text/plain; charset=UTF-8)
 119          * @return Status object
 120          */
 121         public static function send( $to, $from, $subject, $body, $replyto = null, $contentType = 'text/plain; charset=UTF-8' ) {
 122                 global $wgSMTP, $wgEnotifImpersonal;
 123                 global $wgEnotifMaxRecips, $wgAdditionalMailParams;
 124
 125                 if ( is_array( $to ) ) {
 126                         $emails = '';
 127                         // This wouldn't be necessary if implode() worked on arrays of
 128                         // objects using __toString(). http://bugs.php.net/bug.php?id=36612
 129                         foreach ( $to as $t ) {
 130                                 $emails .= $t->toString() . ",";
 131                         }
 132                         $emails = rtrim( $emails, ',' );
 133                         wfDebug( __METHOD__ . ': sending mail to ' . $emails . "\n" );
 134                 } else {
 135                         wfDebug( __METHOD__ . ': sending mail to ' . implode( ',', array( $to->toString() ) ) . "\n" );
 136                 }
 137
 138                 if ( is_array( $wgSMTP ) ) {
 139                         if ( function_exists( 'stream_resolve_include_path' ) ) {
 140                                 $found = stream_resolve_include_path( 'Mail.php' );
 141                         } else {
 142                                 $found = Fallback::stream_resolve_include_path( 'Mail.php' );
 143                         }
 144                         if ( !$found ) {
 145                                 throw new MWException( 'PEAR mail package is not installed' );
 146                         }
 147                         require_once( 'Mail.php' );
 148
 149                         $msgid = str_replace( " ", "_", microtime() );
 150                         if ( function_exists( 'posix_getpid' ) ) {
 151                                 $msgid .= '.' . posix_getpid();
 152                         }
 153
 154                         if ( is_array( $to ) ) {
 155                                 $dest = array();
 156                                 foreach ( $to as $u ) {
 157                                         $dest[] = $u->address;
 158                                 }
 159                         } else {
 160                                 $dest = $to->address;
 161                         }
 162
 163                         $headers['From'] = $from->toString();
 164                         $headers['Return-Path'] = $from->toString();
 165
 166                         if ( $wgEnotifImpersonal ) {
 167                                 $headers['To'] = 'undisclosed-recipients:;';
 168                         }
 169                         else {
 170                                 $headers['To'] = implode( ", ", (array )$dest );
 171                         }
 172
 173                         if ( $replyto ) {
 174                                 $headers['Reply-To'] = $replyto->toString();
 175                         }
 176                         $headers['Subject'] = self::quotedPrintable( $subject );
 177                         $headers['Date'] = date( 'r' );
 178                         $headers['MIME-Version'] = '1.0';
 179                         $headers['Content-type'] = ( is_null( $contentType ) ?
 180                                         'text/plain; charset=UTF-8' : $contentType );
 181                         $headers['Content-transfer-encoding'] = '8bit';
 182                         // @todo FIXME
 183                         $headers['Message-ID'] = "<$msgid@" . $wgSMTP['IDHost'] . '>';
 184                         $headers['X-Mailer'] = 'MediaWiki mailer';
 185
 186                         wfSuppressWarnings();
 187
 188                         // Create the mail object using the Mail::factory method
 189                         $mail_object =& Mail::factory( 'smtp', $wgSMTP );
 190                         if ( PEAR::isError( $mail_object ) ) {
 191                                 wfDebug( "PEAR::Mail factory failed: " . $mail_object->getMessage() . "\n" );
 192                                 wfRestoreWarnings();
 193                                 return Status::newFatal( 'pear-mail-error', $mail_object->getMessage() );
 194                         }
 195
 196                         wfDebug( "Sending mail via PEAR::Mail to $dest\n" );
 197                         $chunks = array_chunk( (array)$dest, $wgEnotifMaxRecips );
 198                         foreach ( $chunks as $chunk ) {
 199                                 $status = self::sendWithPear( $mail_object, $chunk, $headers, $body );
 200                                 if ( !$status->isOK() ) {
 201                                         wfRestoreWarnings();
 202                                         return $status;
 203                                 }
 204                         }
 205                         wfRestoreWarnings();
 206                         return Status::newGood();
 207                 } else  {
 208                         # Line endings need to be different on Unix and Windows due to
 209                         # the bug described at http://trac.wordpress.org/ticket/2603
 210                         if ( wfIsWindows() ) {
 211                                 $body = str_replace( "\n", "\r\n", $body );
 212                                 $endl = "\r\n";
 213                         } else {
 214                                 $endl = "\n";
 215                         }
 216
 217                         $headers = array(
 218                                 "MIME-Version: 1.0",
 219                                 "Content-type: $contentType",
 220                                 "Content-Transfer-Encoding: 8bit",
 221                                 "X-Mailer: MediaWiki mailer",
 222                                 "From: " . $from->toString(),
 223                         );
 224                         if ( $replyto ) {
 225                                 $headers[] = "Reply-To: " . $replyto->toString();
 226                         }
 227
 228                         $headers = implode( $endl, $headers );
 229
 230                         wfDebug( "Sending mail via internal mail() function\n" );
 231
 232                         self::$mErrorString = '';
 233                         $html_errors = ini_get( 'html_errors' );
 234                         ini_set( 'html_errors', '0' );
 235                         set_error_handler( 'UserMailer::errorHandler' );
 236
 237                         if ( !is_array( $to ) ) {
 238                                 $to = array( $to );
 239                         }
 240                         foreach ( $to as $recip ) {
 241                                 $sent = mail( $recip->toString(), self::quotedPrintable( $subject ), $body, $headers, $wgAdditionalMailParams );
 242                         }
 243
 244                         restore_error_handler();
 245                         ini_set( 'html_errors', $html_errors );
 246
 247                         if ( self::$mErrorString ) {
 248                                 wfDebug( "Error sending mail: " . self::$mErrorString . "\n" );
 249                                 return Status::newFatal( 'php-mail-error', self::$mErrorString );
 250                         } elseif ( ! $sent ) {
 251                                 // mail function only tells if there's an error
 252                                 wfDebug( "Error sending mail\n" );
 253                                 return Status::newFatal( 'php-mail-error-unknown' );
 254                         } else {
 255                                 return Status::newGood();
 256                         }
 257                 }
 258         }
 259
 260         /**
 261          * Set the mail error message in self::$mErrorString
 262          *
 263          * @param $code Integer: error number
 264          * @param $string String: error message
 265          */
 266         static function errorHandler( $code, $string ) {
 267                 self::$mErrorString = preg_replace( '/^mail\(\)(\s*\[.*?\])?: /', '', $string );
 268         }
 269
 270         /**
 271          * Converts a string into a valid RFC 822 "phrase", such as is used for the sender name
 272          * @param $phrase string
 273          * @return string
 274          */
 275         public static function rfc822Phrase( $phrase ) {
 276                 $phrase = strtr( $phrase, array( "\r" => '', "\n" => '', '"' => '' ) );
 277                 return '"' . $phrase . '"';
 278         }
 279
 280         /**
 281          * Converts a string into quoted-printable format
 282          * @since 1.17
 283          */
 284         public static function quotedPrintable( $string, $charset = '' ) {
 285                 # Probably incomplete; see RFC 2045
 286                 if( empty( $charset ) ) {
 287                         $charset = 'UTF-8';
 288                 }
 289                 $charset = strtoupper( $charset );
 290                 $charset = str_replace( 'ISO-8859', 'ISO8859', $charset ); // ?
 291
 292                 $illegal = '\x00-\x08\x0b\x0c\x0e-\x1f\x7f-\xff=';
 293                 $replace = $illegal . '\t ?_';
 294                 if( !preg_match( "/[$illegal]/", $string ) ) {
 295                         return $string;
 296                 }
 297                 $out = "=?$charset?Q?";
 298                 $out .= preg_replace_callback( "/([$replace])/",
 299                         array( __CLASS__, 'quotedPrintableCallback' ), $string );
 300                 $out .= '?=';
 301                 return $out;
 302         }
 303
 304         protected static function quotedPrintableCallback( $matches ) {
 305                 return sprintf( "=%02X", ord( $matches[1] ) );
 306         }
 307 }
 308
 309 /**
 310  * This module processes the email notifications when the current page is
 311  * changed. It looks up the table watchlist to find out which users are watching
 312  * that page.
 313  *
 314  * The current implementation sends independent emails to each watching user for
 315  * the following reason:
 316  *
 317  * - Each watching user will be notified about the page edit time expressed in
 318  * his/her local time (UTC is shown additionally). To achieve this, we need to
 319  * find the individual timeoffset of each watching user from the preferences..
 320  *
 321  * Suggested improvement to slack down the number of sent emails: We could think
 322  * of sending out bulk mails (bcc:user1,user2...) for all these users having the
 323  * same timeoffset in their preferences.
 324  *
 325  * Visit the documentation pages under http://meta.wikipedia.com/Enotif
 326  *
 327  *
 328  */
 329 class EmailNotification {
 330         protected $to, $subject, $body, $replyto, $from;
 331         protected $user, $title, $timestamp, $summary, $minorEdit, $oldid, $composed_common, $editor;
 332         protected $mailTargets = array();
 333
 334         /**
 335          * Send emails corresponding to the user $editor editing the page $title.
 336          * Also updates wl_notificationtimestamp.
 337          *
 338          * May be deferred via the job queue.
 339          *
 340          * @param $editor User object
 341          * @param $title Title object
 342          * @param $timestamp
 343          * @param $summary
 344          * @param $minorEdit
 345          * @param $oldid (default: false)
 346          */
 347         public function notifyOnPageChange( $editor, $title, $timestamp, $summary, $minorEdit, $oldid = false ) {
 348                 global $wgEnotifUseJobQ, $wgEnotifWatchlist, $wgShowUpdatedMarker;
 349
 350                 if ( $title->getNamespace() < 0 ) {
 351                         return;
 352                 }
 353
 354                 // Build a list of users to notfiy
 355                 $watchers = array();
 356                 if ( $wgEnotifWatchlist || $wgShowUpdatedMarker ) {
 357                         $dbw = wfGetDB( DB_MASTER );
 358                         $res = $dbw->select( array( 'watchlist' ),
 359                                 array( 'wl_user' ),
 360                                 array(
 361                                         'wl_title' => $title->getDBkey(),
 362                                         'wl_namespace' => $title->getNamespace(),
 363                                         'wl_user != ' . intval( $editor->getID() ),
 364                                         'wl_notificationtimestamp IS NULL',
 365                                 ), __METHOD__
 366                         );
 367                         foreach ( $res as $row ) {
 368                                 $watchers[] = intval( $row->wl_user );
 369                         }
 370                         if ( $watchers ) {
 371                                 // Update wl_notificationtimestamp for all watching users except
 372                                 // the editor
 373                                 $dbw->begin();
 374                                 $dbw->update( 'watchlist',
 375                                         array( /* SET */
 376                                                 'wl_notificationtimestamp' => $dbw->timestamp( $timestamp )
 377                                         ), array( /* WHERE */
 378                                                 'wl_title' => $title->getDBkey(),
 379                                                 'wl_namespace' => $title->getNamespace(),
 380                                                 'wl_user' => $watchers
 381                                         ), __METHOD__
 382                                 );
 383                                 $dbw->commit();
 384                         }
 385                 }
 386
 387                 if ( $wgEnotifUseJobQ ) {
 388                         $params = array(
 389                                 "editor" => $editor->getName(),
 390                                 "editorID" => $editor->getID(),
 391                                 "timestamp" => $timestamp,
 392                                 "summary" => $summary,
 393                                 "minorEdit" => $minorEdit,
 394                                 "oldid" => $oldid,
 395                                 "watchers" => $watchers );
 396                         $job = new EnotifNotifyJob( $title, $params );
 397                         $job->insert();
 398                 } else {
 399                         $this->actuallyNotifyOnPageChange( $editor, $title, $timestamp, $summary, $minorEdit, $oldid, $watchers );
 400                 }
 401
 402         }
 403
 404         /**
 405          * Immediate version of notifyOnPageChange().
 406          *
 407          * Send emails corresponding to the user $editor editing the page $title.
 408          * Also updates wl_notificationtimestamp.
 409          *
 410          * @param $editor User object
 411          * @param $title Title object
 412          * @param $timestamp string Edit timestamp
 413          * @param $summary string Edit summary
 414          * @param $minorEdit bool
 415          * @param $oldid int Revision ID
 416          * @param $watchers array of user IDs
 417          */
 418         public function actuallyNotifyOnPageChange( $editor, $title, $timestamp, $summary, $minorEdit, $oldid, $watchers ) {
 419                 # we use $wgPasswordSender as sender's address
 420                 global $wgEnotifWatchlist;
 421                 global $wgEnotifMinorEdits, $wgEnotifUserTalk;
 422
 423                 wfProfileIn( __METHOD__ );
 424
 425                 # The following code is only run, if several conditions are met:
 426                 # 1. EmailNotification for pages (other than user_talk pages) must be enabled
 427                 # 2. minor edits (changes) are only regarded if the global flag indicates so
 428
 429                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 430
 431                 $this->title = $title;
 432                 $this->timestamp = $timestamp;
 433                 $this->summary = $summary;
 434                 $this->minorEdit = $minorEdit;
 435                 $this->oldid = $oldid;
 436                 $this->editor = $editor;
 437                 $this->composed_common = false;
 438
 439                 $userTalkId = false;
 440
 441                 if ( !$minorEdit || ( $wgEnotifMinorEdits && !$editor->isAllowed( 'nominornewtalk' ) ) ) {
 442                         if ( $wgEnotifUserTalk && $isUserTalkPage ) {
 443                                 $targetUser = User::newFromName( $title->getText() );
 444                                 if ( !$targetUser || $targetUser->isAnon() ) {
 445                                         wfDebug( __METHOD__ . ": user talk page edited, but user does not exist\n" );
 446                                 } elseif ( $targetUser->getId() == $editor->getId() ) {
 447                                         wfDebug( __METHOD__ . ": user edited their own talk page, no notification sent\n" );
 448                                 } elseif ( $targetUser->getOption( 'enotifusertalkpages' ) &&
 449                                         ( !$minorEdit || $targetUser->getOption( 'enotifminoredits' ) ) )
 450                                 {
 451                                         if ( $targetUser->isEmailConfirmed() ) {
 452                                                 wfDebug( __METHOD__ . ": sending talk page update notification\n" );
 453                                                 $this->compose( $targetUser );
 454                                                 $userTalkId = $targetUser->getId();
 455                                         } else {
 456                                                 wfDebug( __METHOD__ . ": talk page owner doesn't have validated email\n" );
 457                                         }
 458                                 } else {
 459                                         wfDebug( __METHOD__ . ": talk page owner doesn't want notifications\n" );
 460                                 }
 461                         }
 462
 463                         if ( $wgEnotifWatchlist ) {
 464                                 // Send updates to watchers other than the current editor
 465                                 $userArray = UserArray::newFromIDs( $watchers );
 466                                 foreach ( $userArray as $watchingUser ) {
 467                                         if ( $watchingUser->getOption( 'enotifwatchlistpages' ) &&
 468                                                 ( !$minorEdit || $watchingUser->getOption( 'enotifminoredits' ) ) &&
 469                                                 $watchingUser->isEmailConfirmed() &&
 470                                                 $watchingUser->getID() != $userTalkId )
 471                                         {
 472                                                 $this->compose( $watchingUser );
 473                                         }
 474                                 }
 475                         }
 476                 }
 477
 478                 global $wgUsersNotifiedOnAllChanges;
 479                 foreach ( $wgUsersNotifiedOnAllChanges as $name ) {
 480                         $user = User::newFromName( $name );
 481                         $this->compose( $user );
 482                 }
 483
 484                 $this->sendMails();
 485                 wfProfileOut( __METHOD__ );
 486         }
 487
 488         /**
 489          * Generate the generic "this page has been changed" e-mail text.
 490          */
 491         private function composeCommonMailtext() {
 492                 global $wgPasswordSender, $wgPasswordSenderName, $wgNoReplyAddress;
 493                 global $wgEnotifFromEditor, $wgEnotifRevealEditorAddress;
 494                 global $wgEnotifImpersonal, $wgEnotifUseRealName;
 495
 496                 $this->composed_common = true;
 497
 498                 $summary = ( $this->summary == '' ) ? ' - ' : $this->summary;
 499                 $medit   = ( $this->minorEdit ) ? wfMsgForContent( 'minoredit' ) : '';
 500
 501                 # You as the WikiAdmin and Sysops can make use of plenty of
 502                 # named variables when composing your notification emails while
 503                 # simply editing the Meta pages
 504
 505                 $subject = wfMsgForContent( 'enotif_subject' );
 506                 $body    = wfMsgForContent( 'enotif_body' );
 507                 $from    = ''; /* fail safe */
 508                 $replyto = ''; /* fail safe */
 509                 $keys    = array();
 510
 511                 if ( $this->oldid ) {
 512                         $difflink = $this->title->getFullUrl( 'diff=0&oldid=' . $this->oldid );
 513                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_lastvisited', $difflink );
 514                         $keys['$OLDID']   = $this->oldid;
 515                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'changed' );
 516                 } else {
 517                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_newpagetext' );
 518                         # clear $OLDID placeholder in the message template
 519                         $keys['$OLDID']   = '';
 520                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'created' );
 521                 }
 522
 523                 if ( $wgEnotifImpersonal && $this->oldid ) {
 524                         /**
 525                          * For impersonal mail, show a diff link to the last
 526                          * revision.
 527                          */
 528                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_lastdiff',
 529                                         $this->title->getFullURL( "oldid={$this->oldid}&diff=next" ) );
 530                 }
 531
 532                 $body = strtr( $body, $keys );
 533                 $pagetitle = $this->title->getPrefixedText();
 534                 $keys['$PAGETITLE']          = $pagetitle;
 535                 $keys['$PAGETITLE_URL']      = $this->title->getFullUrl();
 536
 537                 $keys['$PAGEMINOREDIT']      = $medit;
 538                 $keys['$PAGESUMMARY']        = $summary;
 539                 $keys['$UNWATCHURL']         = $this->title->getFullUrl( 'action=unwatch' );
 540
 541                 $subject = strtr( $subject, $keys );
 542
 543                 # Reveal the page editor's address as REPLY-TO address only if
 544                 # the user has not opted-out and the option is enabled at the
 545                 # global configuration level.
 546                 $editor = $this->editor;
 547                 $name    = $wgEnotifUseRealName ? $editor->getRealName() : $editor->getName();
 548                 $adminAddress = new MailAddress( $wgPasswordSender, $wgPasswordSenderName );
 549                 $editorAddress = new MailAddress( $editor );
 550                 if ( $wgEnotifRevealEditorAddress
 551                         && ( $editor->getEmail() != '' )
 552                         && $editor->getOption( 'enotifrevealaddr' ) ) {
 553                         if ( $wgEnotifFromEditor ) {
 554                                 $from    = $editorAddress;
 555                         } else {
 556                                 $from    = $adminAddress;
 557                                 $replyto = $editorAddress;
 558                         }
 559                 } else {
 560                         $from    = $adminAddress;
 561                         $replyto = new MailAddress( $wgNoReplyAddress );
 562                 }
 563
 564                 if ( $editor->isAnon() ) {
 565                         # real anon (user:xxx.xxx.xxx.xxx)
 566                         $utext = wfMsgForContent( 'enotif_anon_editor', $name );
 567                         $subject = str_replace( '$PAGEEDITOR', $utext, $subject );
 568                         $keys['$PAGEEDITOR']       = $utext;
 569                         $keys['$PAGEEDITOR_EMAIL'] = wfMsgForContent( 'noemailtitle' );
 570                 } else {
 571                         $subject = str_replace( '$PAGEEDITOR', $name, $subject );
 572                         $keys['$PAGEEDITOR']          = $name;
 573                         $emailPage = SpecialPage::getSafeTitleFor( 'Emailuser', $name );
 574                         $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getFullUrl();
 575                 }
 576                 $userPage = $editor->getUserPage();
 577                 $keys['$PAGEEDITOR_WIKI'] = $userPage->getFullUrl();
 578                 $body = strtr( $body, $keys );
 579                 $body = wordwrap( $body, 72 );
 580
 581                 # now save this as the constant user-independent part of the message
 582                 $this->from    = $from;
 583                 $this->replyto = $replyto;
 584                 $this->subject = $subject;
 585                 $this->body    = $body;
 586         }
 587
 588         /**
 589          * Compose a mail to a given user and either queue it for sending, or send it now,
 590          * depending on settings.
 591          *
 592          * Call sendMails() to send any mails that were queued.
 593          */
 594         function compose( $user ) {
 595                 global $wgEnotifImpersonal;
 596
 597                 if ( !$this->composed_common )
 598                         $this->composeCommonMailtext();
 599
 600                 if ( $wgEnotifImpersonal ) {
 601                         $this->mailTargets[] = new MailAddress( $user );
 602                 } else {
 603                         $this->sendPersonalised( $user );
 604                 }
 605         }
 606
 607         /**
 608          * Send any queued mails
 609          */
 610         function sendMails() {
 611                 global $wgEnotifImpersonal;
 612                 if ( $wgEnotifImpersonal ) {
 613                         $this->sendImpersonal( $this->mailTargets );
 614                 }
 615         }
 616
 617         /**
 618          * Does the per-user customizations to a notification e-mail (name,
 619          * timestamp in proper timezone, etc) and sends it out.
 620          * Returns true if the mail was sent successfully.
 621          *
 622          * @param $watchingUser User object
 623          * @return Boolean
 624          * @private
 625          */
 626         function sendPersonalised( $watchingUser ) {
 627                 global $wgContLang, $wgEnotifUseRealName;
 628                 // From the PHP manual:
 629                 //     Note:  The to parameter cannot be an address in the form of "Something <someone@example.com>".
 630                 //     The mail command will not parse this properly while talking with the MTA.
 631                 $to = new MailAddress( $watchingUser );
 632                 $name = $wgEnotifUseRealName ? $watchingUser->getRealName() : $watchingUser->getName();
 633                 $body = str_replace( '$WATCHINGUSERNAME', $name, $this->body );
 634
 635                 $timecorrection = $watchingUser->getOption( 'timecorrection' );
 636
 637                 # $PAGEEDITDATE is the time and date of the page change
 638                 # expressed in terms of individual local time of the notification
 639                 # recipient, i.e. watching user
 640                 $body = str_replace(
 641                         array( '$PAGEEDITDATEANDTIME',
 642                                 '$PAGEEDITDATE',
 643                                 '$PAGEEDITTIME' ),
 644                         array( $wgContLang->timeanddate( $this->timestamp, true, false, $timecorrection ),
 645                                 $wgContLang->date( $this->timestamp, true, false, $timecorrection ),
 646                                 $wgContLang->time( $this->timestamp, true, false, $timecorrection ) ),
 647                         $body );
 648
 649                 return UserMailer::send( $to, $this->from, $this->subject, $body, $this->replyto );
 650         }
 651
 652         /**
 653          * Same as sendPersonalised but does impersonal mail suitable for bulk
 654          * mailing.  Takes an array of MailAddress objects.
 655          */
 656         function sendImpersonal( $addresses ) {
 657                 global $wgContLang;
 658
 659                 if ( empty( $addresses ) )
 660                         return;
 661
 662                 $body = str_replace(
 663                                 array( '$WATCHINGUSERNAME',
 664                                         '$PAGEEDITDATE',
 665                                         '$PAGEEDITTIME' ),
 666                                 array( wfMsgForContent( 'enotif_impersonal_salutation' ),
 667                                         $wgContLang->date( $this->timestamp, true, false, false ),
 668                                         $wgContLang->time( $this->timestamp, true, false, false ) ),
 669                                 $this->body );
 670
 671                 return UserMailer::send( $addresses, $this->from, $this->subject, $body, $this->replyto );
 672         }
 673
 674 } # end of class EmailNotification