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