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  * @author Luke Welling lwelling@wikimedia.org
  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 string|User $address String with an email address, or a User object
  35          * @param string $name Human-readable name if a string address is given
  36          * @param string $realName 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                 } else {
  71                         return "";
  72                 }
  73         }
  74
  75         function __toString() {
  76                 return $this->toString();
  77         }
  78 }
  79
  80 /**
  81  * Collection of static functions for sending mail
  82  */
  83 class UserMailer {
  84         private static $mErrorString;
  85
  86         /**
  87          * Send mail using a PEAR mailer
  88          *
  89          * @param UserMailer $mailer
  90          * @param string $dest
  91          * @param string $headers
  92          * @param string $body
  93          *
  94          * @return Status
  95          */
  96         protected static function sendWithPear( $mailer, $dest, $headers, $body ) {
  97                 $mailResult = $mailer->send( $dest, $headers, $body );
  98
  99                 # Based on the result return an error string,
 100                 if ( PEAR::isError( $mailResult ) ) {
 101                         wfDebug( "PEAR::Mail failed: " . $mailResult->getMessage() . "\n" );
 102                         return Status::newFatal( 'pear-mail-error', $mailResult->getMessage() );
 103                 } else {
 104                         return Status::newGood();
 105                 }
 106         }
 107
 108         /**
 109          * Creates a single string from an associative array
 110          *
 111          * @param array $headers Associative Array: keys are header field names,
 112          *                 values are ... values.
 113          * @param string $endl The end of line character.  Defaults to "\n"
 114          *
 115          * Note RFC2822 says newlines must be CRLF (\r\n)
 116          * but php mail naively "corrects" it and requires \n for the "correction" to work
 117          *
 118          * @return string
 119          */
 120         static function arrayToHeaderString( $headers, $endl = "\n" ) {
 121                 $strings = array();
 122                 foreach ( $headers as $name => $value ) {
 123                         // Prevent header injection by stripping newlines from value
 124                         $value = self::sanitizeHeaderValue( $value );
 125                         $strings[] = "$name: $value";
 126                 }
 127                 return implode( $endl, $strings );
 128         }
 129
 130         /**
 131          * Create a value suitable for the MessageId Header
 132          *
 133          * @return string
 134          */
 135         static function makeMsgId() {
 136                 global $wgSMTP, $wgServer;
 137
 138                 $msgid = uniqid( wfWikiID() . ".", true ); /* true required for cygwin */
 139                 if ( is_array( $wgSMTP ) && isset( $wgSMTP['IDHost'] ) && $wgSMTP['IDHost'] ) {
 140                         $domain = $wgSMTP['IDHost'];
 141                 } else {
 142                         $url = wfParseUrl( $wgServer );
 143                         $domain = $url['host'];
 144                 }
 145                 return "<$msgid@$domain>";
 146         }
 147
 148         /**
 149          * This function will perform a direct (authenticated) login to
 150          * a SMTP Server to use for mail relaying if 'wgSMTP' specifies an
 151          * array of parameters. It requires PEAR:Mail to do that.
 152          * Otherwise it just uses the standard PHP 'mail' function.
 153          *
 154          * @param MailAddress $to Recipient's email (or an array of them)
 155          * @param MailAddress $from Sender's email
 156          * @param string $subject Email's subject.
 157          * @param string $body Email's text or Array of two strings to be the text and html bodies
 158          * @param MailAddress $replyto Optional reply-to email (default: null).
 159          * @param string $contentType Optional custom Content-Type (default: text/plain; charset=UTF-8)
 160          * @throws MWException
 161          * @return Status
 162          */
 163         public static function send( $to, $from, $subject, $body, $replyto = null,
 164                 $contentType = 'text/plain; charset=UTF-8'
 165         ) {
 166                 global $wgSMTP, $wgEnotifMaxRecips, $wgAdditionalMailParams, $wgAllowHTMLEmail;
 167                 $mime = null;
 168                 if ( !is_array( $to ) ) {
 169                         $to = array( $to );
 170                 }
 171
 172                 // mail body must have some content
 173                 $minBodyLen = 10;
 174                 // arbitrary but longer than Array or Object to detect casting error
 175
 176                 // body must either be a string or an array with text and body
 177                 if (
 178                         !(
 179                                 !is_array( $body ) &&
 180                                 strlen( $body ) >= $minBodyLen
 181                         )
 182                         &&
 183                         !(
 184                                 is_array( $body ) &&
 185                                 isset( $body['text'] ) &&
 186                                 isset( $body['html'] ) &&
 187                                 strlen( $body['text'] ) >= $minBodyLen &&
 188                                 strlen( $body['html'] ) >= $minBodyLen
 189                         )
 190                 ) {
 191                         // if it is neither we have a problem
 192                         return Status::newFatal( 'user-mail-no-body' );
 193                 }
 194
 195                 if ( !$wgAllowHTMLEmail && is_array( $body ) ) {
 196                         // HTML not wanted.  Dump it.
 197                         $body = $body['text'];
 198                 }
 199
 200                 wfDebug( __METHOD__ . ': sending mail to ' . implode( ', ', $to ) . "\n" );
 201
 202                 # Make sure we have at least one address
 203                 $has_address = false;
 204                 foreach ( $to as $u ) {
 205                         if ( $u->address ) {
 206                                 $has_address = true;
 207                                 break;
 208                         }
 209                 }
 210                 if ( !$has_address ) {
 211                         return Status::newFatal( 'user-mail-no-addy' );
 212                 }
 213
 214                 # Forge email headers
 215                 # -------------------
 216                 #
 217                 # WARNING
 218                 #
 219                 # DO NOT add To: or Subject: headers at this step. They need to be
 220                 # handled differently depending upon the mailer we are going to use.
 221                 #
 222                 # To:
 223                 #  PHP mail() first argument is the mail receiver. The argument is
 224                 #  used as a recipient destination and as a To header.
 225                 #
 226                 #  PEAR mailer has a recipient argument which is only used to
 227                 #  send the mail. If no To header is given, PEAR will set it to
 228                 #  to 'undisclosed-recipients:'.
 229                 #
 230                 #  NOTE: To: is for presentation, the actual recipient is specified
 231                 #  by the mailer using the Rcpt-To: header.
 232                 #
 233                 # Subject:
 234                 #  PHP mail() second argument to pass the subject, passing a Subject
 235                 #  as an additional header will result in a duplicate header.
 236                 #
 237                 #  PEAR mailer should be passed a Subject header.
 238                 #
 239                 # -- hashar 20120218
 240
 241                 $headers['From'] = $from->toString();
 242                 $returnPath = $from->address;
 243                 $extraParams = $wgAdditionalMailParams;
 244
 245                 // Hook to generate custom VERP address for 'Return-Path'
 246                 wfRunHooks( 'UserMailerChangeReturnPath', array( $to, &$returnPath ) );
 247                 # Add the envelope sender address using the -f command line option when PHP mail() is used.
 248                 # Will default to the $from->address when the UserMailerChangeReturnPath hook fails and the
 249                 # generated VERP address when the hook runs effectively.
 250                 $extraParams .= ' -f ' . $returnPath;
 251
 252                 $headers['Return-Path'] = $returnPath;
 253
 254                 if ( $replyto ) {
 255                         $headers['Reply-To'] = $replyto->toString();
 256                 }
 257
 258                 $headers['Date'] = MWTimestamp::getLocalInstance()->format( 'r' );
 259                 $headers['Message-ID'] = self::makeMsgId();
 260                 $headers['X-Mailer'] = 'MediaWiki mailer';
 261
 262                 # Line endings need to be different on Unix and Windows due to
 263                 # the bug described at http://trac.wordpress.org/ticket/2603
 264                 if ( wfIsWindows() ) {
 265                         $endl = "\r\n";
 266                 } else {
 267                         $endl = "\n";
 268                 }
 269
 270                 if ( is_array( $body ) ) {
 271                         // we are sending a multipart message
 272                         wfDebug( "Assembling multipart mime email\n" );
 273                         if ( !stream_resolve_include_path( 'Mail/mime.php' ) ) {
 274                                 wfDebug( "PEAR Mail_Mime package is not installed. Falling back to text email.\n" );
 275                                 // remove the html body for text email fall back
 276                                 $body = $body['text'];
 277                         } else {
 278                                 require_once 'Mail/mime.php';
 279                                 if ( wfIsWindows() ) {
 280                                         $body['text'] = str_replace( "\n", "\r\n", $body['text'] );
 281                                         $body['html'] = str_replace( "\n", "\r\n", $body['html'] );
 282                                 }
 283                                 $mime = new Mail_mime( array(
 284                                         'eol' => $endl,
 285                                         'text_charset' => 'UTF-8',
 286                                         'html_charset' => 'UTF-8'
 287                                 ) );
 288                                 $mime->setTXTBody( $body['text'] );
 289                                 $mime->setHTMLBody( $body['html'] );
 290                                 $body = $mime->get(); // must call get() before headers()
 291                                 $headers = $mime->headers( $headers );
 292                         }
 293                 }
 294                 if ( $mime === null ) {
 295                         // sending text only, either deliberately or as a fallback
 296                         if ( wfIsWindows() ) {
 297                                 $body = str_replace( "\n", "\r\n", $body );
 298                         }
 299                         $headers['MIME-Version'] = '1.0';
 300                         $headers['Content-type'] = ( is_null( $contentType ) ?
 301                                 'text/plain; charset=UTF-8' : $contentType );
 302                         $headers['Content-transfer-encoding'] = '8bit';
 303                 }
 304
 305                 $ret = wfRunHooks( 'AlternateUserMailer', array( $headers, $to, $from, $subject, $body ) );
 306                 if ( $ret === false ) {
 307                         // the hook implementation will return false to skip regular mail sending
 308                         return Status::newGood();
 309                 } elseif ( $ret !== true ) {
 310                         // the hook implementation will return a string to pass an error message
 311                         return Status::newFatal( 'php-mail-error', $ret );
 312                 }
 313
 314                 if ( is_array( $wgSMTP ) ) {
 315                         #
 316                         # PEAR MAILER
 317                         #
 318
 319                         if ( !stream_resolve_include_path( 'Mail.php' ) ) {
 320                                 throw new MWException( 'PEAR mail package is not installed' );
 321                         }
 322                         require_once 'Mail.php';
 323
 324                         wfSuppressWarnings();
 325
 326                         // Create the mail object using the Mail::factory method
 327                         $mail_object =& Mail::factory( 'smtp', $wgSMTP );
 328                         if ( PEAR::isError( $mail_object ) ) {
 329                                 wfDebug( "PEAR::Mail factory failed: " . $mail_object->getMessage() . "\n" );
 330                                 wfRestoreWarnings();
 331                                 return Status::newFatal( 'pear-mail-error', $mail_object->getMessage() );
 332                         }
 333
 334                         wfDebug( "Sending mail via PEAR::Mail\n" );
 335
 336                         $headers['Subject'] = self::quotedPrintable( $subject );
 337
 338                         # When sending only to one recipient, shows it its email using To:
 339                         if ( count( $to ) == 1 ) {
 340                                 $headers['To'] = $to[0]->toString();
 341                         }
 342
 343                         # Split jobs since SMTP servers tends to limit the maximum
 344                         # number of possible recipients.
 345                         $chunks = array_chunk( $to, $wgEnotifMaxRecips );
 346                         foreach ( $chunks as $chunk ) {
 347                                 $status = self::sendWithPear( $mail_object, $chunk, $headers, $body );
 348                                 # FIXME : some chunks might be sent while others are not!
 349                                 if ( !$status->isOK() ) {
 350                                         wfRestoreWarnings();
 351                                         return $status;
 352                                 }
 353                         }
 354                         wfRestoreWarnings();
 355                         return Status::newGood();
 356                 } else {
 357                         #
 358                         # PHP mail()
 359                         #
 360                         if ( count( $to ) > 1 ) {
 361                                 $headers['To'] = 'undisclosed-recipients:;';
 362                         }
 363                         $headers = self::arrayToHeaderString( $headers, $endl );
 364
 365                         wfDebug( "Sending mail via internal mail() function\n" );
 366
 367                         self::$mErrorString = '';
 368                         $html_errors = ini_get( 'html_errors' );
 369                         ini_set( 'html_errors', '0' );
 370                         set_error_handler( 'UserMailer::errorHandler' );
 371
 372                         try {
 373                                 $safeMode = wfIniGetBool( 'safe_mode' );
 374
 375                                 foreach ( $to as $recip ) {
 376                                         if ( $safeMode ) {
 377                                                 $sent = mail( $recip, self::quotedPrintable( $subject ), $body, $headers );
 378                                         } else {
 379                                                 $sent = mail(
 380                                                         $recip,
 381                                                         self::quotedPrintable( $subject ),
 382                                                         $body,
 383                                                         $headers,
 384                                                         $extraParams
 385                                                 );
 386                                         }
 387                                 }
 388                         } catch ( Exception $e ) {
 389                                 restore_error_handler();
 390                                 throw $e;
 391                         }
 392
 393                         restore_error_handler();
 394                         ini_set( 'html_errors', $html_errors );
 395
 396                         if ( self::$mErrorString ) {
 397                                 wfDebug( "Error sending mail: " . self::$mErrorString . "\n" );
 398                                 return Status::newFatal( 'php-mail-error', self::$mErrorString );
 399                         } elseif ( ! $sent ) {
 400                                 // mail function only tells if there's an error
 401                                 wfDebug( "Unknown error sending mail\n" );
 402                                 return Status::newFatal( 'php-mail-error-unknown' );
 403                         } else {
 404                                 return Status::newGood();
 405                         }
 406                 }
 407         }
 408
 409         /**
 410          * Set the mail error message in self::$mErrorString
 411          *
 412          * @param int $code Error number
 413          * @param string $string Error message
 414          */
 415         static function errorHandler( $code, $string ) {
 416                 self::$mErrorString = preg_replace( '/^mail\(\)(\s*\[.*?\])?: /', '', $string );
 417         }
 418
 419         /**
 420          * Strips bad characters from a header value to prevent PHP mail header injection attacks
 421          * @param string $val String to be santizied
 422          * @return string
 423          */
 424         public static function sanitizeHeaderValue( $val ) {
 425                 return strtr( $val, array( "\r" => '', "\n" => '' ) );
 426         }
 427
 428         /**
 429          * Converts a string into a valid RFC 822 "phrase", such as is used for the sender name
 430          * @param string $phrase
 431          * @return string
 432          */
 433         public static function rfc822Phrase( $phrase ) {
 434                 // Remove line breaks
 435                 $phrase = self::sanitizeHeaderValue( $phrase );
 436                 // Remove quotes
 437                 $phrase = str_replace( '"', '', $phrase );
 438                 return '"' . $phrase . '"';
 439         }
 440
 441         /**
 442          * Converts a string into quoted-printable format
 443          * @since 1.17
 444          *
 445          * From PHP5.3 there is a built in function quoted_printable_encode()
 446          * This method does not duplicate that.
 447          * This method is doing Q encoding inside encoded-words as defined by RFC 2047
 448          * This is for email headers.
 449          * The built in quoted_printable_encode() is for email bodies
 450          * @return string
 451          */
 452         public static function quotedPrintable( $string, $charset = '' ) {
 453                 # Probably incomplete; see RFC 2045
 454                 if ( empty( $charset ) ) {
 455                         $charset = 'UTF-8';
 456                 }
 457                 $charset = strtoupper( $charset );
 458                 $charset = str_replace( 'ISO-8859', 'ISO8859', $charset ); // ?
 459
 460                 $illegal = '\x00-\x08\x0b\x0c\x0e-\x1f\x7f-\xff=';
 461                 $replace = $illegal . '\t ?_';
 462                 if ( !preg_match( "/[$illegal]/", $string ) ) {
 463                         return $string;
 464                 }
 465                 $out = "=?$charset?Q?";
 466                 $out .= preg_replace_callback( "/([$replace])/",
 467                         array( __CLASS__, 'quotedPrintableCallback' ), $string );
 468                 $out .= '?=';
 469                 return $out;
 470         }
 471
 472         protected static function quotedPrintableCallback( $matches ) {
 473                 return sprintf( "=%02X", ord( $matches[1] ) );
 474         }
 475 }
 476
 477 /**
 478  * This module processes the email notifications when the current page is
 479  * changed. It looks up the table watchlist to find out which users are watching
 480  * that page.
 481  *
 482  * The current implementation sends independent emails to each watching user for
 483  * the following reason:
 484  *
 485  * - Each watching user will be notified about the page edit time expressed in
 486  * his/her local time (UTC is shown additionally). To achieve this, we need to
 487  * find the individual timeoffset of each watching user from the preferences..
 488  *
 489  * Suggested improvement to slack down the number of sent emails: We could think
 490  * of sending out bulk mails (bcc:user1,user2...) for all these users having the
 491  * same timeoffset in their preferences.
 492  *
 493  * Visit the documentation pages under http://meta.wikipedia.com/Enotif
 494  *
 495  *
 496  */
 497 class EmailNotification {
 498         protected $subject, $body, $replyto, $from;
 499         protected $timestamp, $summary, $minorEdit, $oldid, $composed_common, $pageStatus;
 500         protected $mailTargets = array();
 501
 502         /**
 503          * @var Title
 504          */
 505         protected $title;
 506
 507         /**
 508          * @var User
 509          */
 510         protected $editor;
 511
 512         /**
 513          * Send emails corresponding to the user $editor editing the page $title.
 514          * Also updates wl_notificationtimestamp.
 515          *
 516          * May be deferred via the job queue.
 517          *
 518          * @param User $editor
 519          * @param Title $title
 520          * @param string $timestamp
 521          * @param string $summary
 522          * @param bool $minorEdit
 523          * @param bool $oldid (default: false)
 524          * @param string $pageStatus (default: 'changed')
 525          */
 526         public function notifyOnPageChange( $editor, $title, $timestamp, $summary,
 527                 $minorEdit, $oldid = false, $pageStatus = 'changed'
 528         ) {
 529                 global $wgEnotifUseJobQ, $wgEnotifWatchlist, $wgShowUpdatedMarker, $wgEnotifMinorEdits,
 530                         $wgUsersNotifiedOnAllChanges, $wgEnotifUserTalk;
 531
 532                 if ( $title->getNamespace() < 0 ) {
 533                         return;
 534                 }
 535
 536                 // Build a list of users to notify
 537                 $watchers = array();
 538                 if ( $wgEnotifWatchlist || $wgShowUpdatedMarker ) {
 539                         $dbw = wfGetDB( DB_MASTER );
 540                         $res = $dbw->select( array( 'watchlist' ),
 541                                 array( 'wl_user' ),
 542                                 array(
 543                                         'wl_user != ' . intval( $editor->getID() ),
 544                                         'wl_namespace' => $title->getNamespace(),
 545                                         'wl_title' => $title->getDBkey(),
 546                                         'wl_notificationtimestamp IS NULL',
 547                                 ), __METHOD__
 548                         );
 549                         foreach ( $res as $row ) {
 550                                 $watchers[] = intval( $row->wl_user );
 551                         }
 552                         if ( $watchers ) {
 553                                 // Update wl_notificationtimestamp for all watching users except the editor
 554                                 $fname = __METHOD__;
 555                                 $dbw->onTransactionIdle(
 556                                         function() use ( $dbw, $timestamp, $watchers, $title, $fname ) {
 557                                                 $dbw->update( 'watchlist',
 558                                                         array( /* SET */
 559                                                                 'wl_notificationtimestamp' => $dbw->timestamp( $timestamp )
 560                                                         ), array( /* WHERE */
 561                                                                 'wl_user' => $watchers,
 562                                                                 'wl_namespace' => $title->getNamespace(),
 563                                                                 'wl_title' => $title->getDBkey(),
 564                                                         ), $fname
 565                                                 );
 566                                         }
 567                                 );
 568                         }
 569                 }
 570
 571                 $sendEmail = true;
 572                 // If nobody is watching the page, and there are no users notified on all changes
 573                 // don't bother creating a job/trying to send emails
 574                 // $watchers deals with $wgEnotifWatchlist
 575                 if ( !count( $watchers ) && !count( $wgUsersNotifiedOnAllChanges ) ) {
 576                         $sendEmail = false;
 577                         // Only send notification for non minor edits, unless $wgEnotifMinorEdits
 578                         if ( !$minorEdit || ( $wgEnotifMinorEdits && !$editor->isAllowed( 'nominornewtalk' ) ) ) {
 579                                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 580                                 if ( $wgEnotifUserTalk
 581                                         && $isUserTalkPage
 582                                         && $this->canSendUserTalkEmail( $editor, $title, $minorEdit )
 583                                 ) {
 584                                         $sendEmail = true;
 585                                 }
 586                         }
 587                 }
 588
 589                 if ( !$sendEmail ) {
 590                         return;
 591                 }
 592
 593                 if ( $wgEnotifUseJobQ ) {
 594                         $params = array(
 595                                 'editor' => $editor->getName(),
 596                                 'editorID' => $editor->getID(),
 597                                 'timestamp' => $timestamp,
 598                                 'summary' => $summary,
 599                                 'minorEdit' => $minorEdit,
 600                                 'oldid' => $oldid,
 601                                 'watchers' => $watchers,
 602                                 'pageStatus' => $pageStatus
 603                         );
 604                         $job = new EnotifNotifyJob( $title, $params );
 605                         JobQueueGroup::singleton()->push( $job );
 606                 } else {
 607                         $this->actuallyNotifyOnPageChange(
 608                                 $editor,
 609                                 $title,
 610                                 $timestamp,
 611                                 $summary,
 612                                 $minorEdit,
 613                                 $oldid,
 614                                 $watchers,
 615                                 $pageStatus
 616                         );
 617                 }
 618         }
 619
 620         /**
 621          * Immediate version of notifyOnPageChange().
 622          *
 623          * Send emails corresponding to the user $editor editing the page $title.
 624          * Also updates wl_notificationtimestamp.
 625          *
 626          * @param User $editor
 627          * @param Title $title
 628          * @param string $timestamp Edit timestamp
 629          * @param string $summary Edit summary
 630          * @param bool $minorEdit
 631          * @param int $oldid Revision ID
 632          * @param array $watchers Array of user IDs
 633          * @param string $pageStatus
 634          * @throws MWException
 635          */
 636         public function actuallyNotifyOnPageChange( $editor, $title, $timestamp, $summary, $minorEdit,
 637                 $oldid, $watchers, $pageStatus = 'changed' ) {
 638                 # we use $wgPasswordSender as sender's address
 639                 global $wgEnotifWatchlist;
 640                 global $wgEnotifMinorEdits, $wgEnotifUserTalk;
 641
 642                 wfProfileIn( __METHOD__ );
 643
 644                 # The following code is only run, if several conditions are met:
 645                 # 1. EmailNotification for pages (other than user_talk pages) must be enabled
 646                 # 2. minor edits (changes) are only regarded if the global flag indicates so
 647
 648                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 649
 650                 $this->title = $title;
 651                 $this->timestamp = $timestamp;
 652                 $this->summary = $summary;
 653                 $this->minorEdit = $minorEdit;
 654                 $this->oldid = $oldid;
 655                 $this->editor = $editor;
 656                 $this->composed_common = false;
 657                 $this->pageStatus = $pageStatus;
 658
 659                 $formattedPageStatus = array( 'deleted', 'created', 'moved', 'restored', 'changed' );
 660
 661                 wfRunHooks( 'UpdateUserMailerFormattedPageStatus', array( &$formattedPageStatus ) );
 662                 if ( !in_array( $this->pageStatus, $formattedPageStatus ) ) {
 663                         wfProfileOut( __METHOD__ );
 664                         throw new MWException( 'Not a valid page status!' );
 665                 }
 666
 667                 $userTalkId = false;
 668
 669                 if ( !$minorEdit || ( $wgEnotifMinorEdits && !$editor->isAllowed( 'nominornewtalk' ) ) ) {
 670                         if ( $wgEnotifUserTalk
 671                                 && $isUserTalkPage
 672                                 && $this->canSendUserTalkEmail( $editor, $title, $minorEdit )
 673                         ) {
 674                                 $targetUser = User::newFromName( $title->getText() );
 675                                 $this->compose( $targetUser );
 676                                 $userTalkId = $targetUser->getId();
 677                         }
 678
 679                         if ( $wgEnotifWatchlist ) {
 680                                 // Send updates to watchers other than the current editor
 681                                 $userArray = UserArray::newFromIDs( $watchers );
 682                                 foreach ( $userArray as $watchingUser ) {
 683                                         if ( $watchingUser->getOption( 'enotifwatchlistpages' )
 684                                                 && ( !$minorEdit || $watchingUser->getOption( 'enotifminoredits' ) )
 685                                                 && $watchingUser->isEmailConfirmed()
 686                                                 && $watchingUser->getID() != $userTalkId
 687                                         ) {
 688                                                 if ( wfRunHooks( 'SendWatchlistEmailNotification', array( $watchingUser, $title, $this ) ) ) {
 689                                                         $this->compose( $watchingUser );
 690                                                 }
 691                                         }
 692                                 }
 693                         }
 694                 }
 695
 696                 global $wgUsersNotifiedOnAllChanges;
 697                 foreach ( $wgUsersNotifiedOnAllChanges as $name ) {
 698                         if ( $editor->getName() == $name ) {
 699                                 // No point notifying the user that actually made the change!
 700                                 continue;
 701                         }
 702                         $user = User::newFromName( $name );
 703                         $this->compose( $user );
 704                 }
 705
 706                 $this->sendMails();
 707                 wfProfileOut( __METHOD__ );
 708         }
 709
 710         /**
 711          * @param User $editor
 712          * @param Title $title
 713          * @param bool $minorEdit
 714          * @return bool
 715          */
 716         private function canSendUserTalkEmail( $editor, $title, $minorEdit ) {
 717                 global $wgEnotifUserTalk;
 718                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 719
 720                 if ( $wgEnotifUserTalk && $isUserTalkPage ) {
 721                         $targetUser = User::newFromName( $title->getText() );
 722
 723                         if ( !$targetUser || $targetUser->isAnon() ) {
 724                                 wfDebug( __METHOD__ . ": user talk page edited, but user does not exist\n" );
 725                         } elseif ( $targetUser->getId() == $editor->getId() ) {
 726                                 wfDebug( __METHOD__ . ": user edited their own talk page, no notification sent\n" );
 727                         } elseif ( $targetUser->getOption( 'enotifusertalkpages' )
 728                                 && ( !$minorEdit || $targetUser->getOption( 'enotifminoredits' ) )
 729                         ) {
 730                                 if ( !$targetUser->isEmailConfirmed() ) {
 731                                         wfDebug( __METHOD__ . ": talk page owner doesn't have validated email\n" );
 732                                 } elseif ( !wfRunHooks( 'AbortTalkPageEmailNotification', array( $targetUser, $title ) ) ) {
 733                                         wfDebug( __METHOD__ . ": talk page update notification is aborted for this user\n" );
 734                                 } else {
 735                                         wfDebug( __METHOD__ . ": sending talk page update notification\n" );
 736                                         return true;
 737                                 }
 738                         } else {
 739                                 wfDebug( __METHOD__ . ": talk page owner doesn't want notifications\n" );
 740                         }
 741                 }
 742                 return false;
 743         }
 744
 745         /**
 746          * Generate the generic "this page has been changed" e-mail text.
 747          */
 748         private function composeCommonMailtext() {
 749                 global $wgPasswordSender, $wgNoReplyAddress;
 750                 global $wgEnotifFromEditor, $wgEnotifRevealEditorAddress;
 751                 global $wgEnotifImpersonal, $wgEnotifUseRealName;
 752
 753                 $this->composed_common = true;
 754
 755                 # You as the WikiAdmin and Sysops can make use of plenty of
 756                 # named variables when composing your notification emails while
 757                 # simply editing the Meta pages
 758
 759                 $keys = array();
 760                 $postTransformKeys = array();
 761                 $pageTitleUrl = $this->title->getCanonicalURL();
 762                 $pageTitle = $this->title->getPrefixedText();
 763
 764                 if ( $this->oldid ) {
 765                         // Always show a link to the diff which triggered the mail. See bug 32210.
 766                         $keys['$NEWPAGE'] = "\n\n" . wfMessage( 'enotif_lastdiff',
 767                                 $this->title->getCanonicalURL( array( 'diff' => 'next', 'oldid' => $this->oldid ) ) )
 768                                 ->inContentLanguage()->text();
 769
 770                         if ( !$wgEnotifImpersonal ) {
 771                                 // For personal mail, also show a link to the diff of all changes
 772                                 // since last visited.
 773                                 $keys['$NEWPAGE'] .= "\n\n" . wfMessage( 'enotif_lastvisited',
 774                                         $this->title->getCanonicalURL( array( 'diff' => '0', 'oldid' => $this->oldid ) ) )
 775                                         ->inContentLanguage()->text();
 776                         }
 777                         $keys['$OLDID'] = $this->oldid;
 778                         // Deprecated since MediaWiki 1.21, not used by default. Kept for backwards-compatibility.
 779                         $keys['$CHANGEDORCREATED'] = wfMessage( 'changed' )->inContentLanguage()->text();
 780                 } else {
 781                         # clear $OLDID placeholder in the message template
 782                         $keys['$OLDID'] = '';
 783                         $keys['$NEWPAGE'] = '';
 784                         // Deprecated since MediaWiki 1.21, not used by default. Kept for backwards-compatibility.
 785                         $keys['$CHANGEDORCREATED'] = wfMessage( 'created' )->inContentLanguage()->text();
 786                 }
 787
 788                 $keys['$PAGETITLE'] = $this->title->getPrefixedText();
 789                 $keys['$PAGETITLE_URL'] = $this->title->getCanonicalURL();
 790                 $keys['$PAGEMINOREDIT'] = $this->minorEdit ?
 791                         wfMessage( 'minoredit' )->inContentLanguage()->text() : '';
 792                 $keys['$UNWATCHURL'] = $this->title->getCanonicalURL( 'action=unwatch' );
 793
 794                 if ( $this->editor->isAnon() ) {
 795                         # real anon (user:xxx.xxx.xxx.xxx)
 796                         $keys['$PAGEEDITOR'] = wfMessage( 'enotif_anon_editor', $this->editor->getName() )
 797                                 ->inContentLanguage()->text();
 798                         $keys['$PAGEEDITOR_EMAIL'] = wfMessage( 'noemailtitle' )->inContentLanguage()->text();
 799
 800                 } else {
 801                         $keys['$PAGEEDITOR'] = $wgEnotifUseRealName && $this->editor->getRealName() !== ''
 802                                 ? $this->editor->getRealName() : $this->editor->getName();
 803                         $emailPage = SpecialPage::getSafeTitleFor( 'Emailuser', $this->editor->getName() );
 804                         $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getCanonicalURL();
 805                 }
 806
 807                 $keys['$PAGEEDITOR_WIKI'] = $this->editor->getUserPage()->getCanonicalURL();
 808                 $keys['$HELPPAGE'] = wfExpandUrl(
 809                         Skin::makeInternalOrExternalUrl( wfMessage( 'helppage' )->inContentLanguage()->text() )
 810                 );
 811
 812                 # Replace this after transforming the message, bug 35019
 813                 $postTransformKeys['$PAGESUMMARY'] = $this->summary == '' ? ' - ' : $this->summary;
 814
 815                 // Now build message's subject and body
 816
 817                 // Messages:
 818                 // enotif_subject_deleted, enotif_subject_created, enotif_subject_moved,
 819                 // enotif_subject_restored, enotif_subject_changed
 820                 $this->subject = wfMessage( 'enotif_subject_' . $this->pageStatus )->inContentLanguage()
 821                         ->params( $pageTitle, $keys['$PAGEEDITOR'] )->text();
 822
 823                 // Messages:
 824                 // enotif_body_intro_deleted, enotif_body_intro_created, enotif_body_intro_moved,
 825                 // enotif_body_intro_restored, enotif_body_intro_changed
 826                 $keys['$PAGEINTRO'] = wfMessage( 'enotif_body_intro_' . $this->pageStatus )
 827                         ->inContentLanguage()->params( $pageTitle, $keys['$PAGEEDITOR'], $pageTitleUrl )
 828                         ->text();
 829
 830                 $body = wfMessage( 'enotif_body' )->inContentLanguage()->plain();
 831                 $body = strtr( $body, $keys );
 832                 $body = MessageCache::singleton()->transform( $body, false, null, $this->title );
 833                 $this->body = wordwrap( strtr( $body, $postTransformKeys ), 72 );
 834
 835                 # Reveal the page editor's address as REPLY-TO address only if
 836                 # the user has not opted-out and the option is enabled at the
 837                 # global configuration level.
 838                 $adminAddress = new MailAddress( $wgPasswordSender,
 839                         wfMessage( 'emailsender' )->inContentLanguage()->text() );
 840                 if ( $wgEnotifRevealEditorAddress
 841                         && ( $this->editor->getEmail() != '' )
 842                         && $this->editor->getOption( 'enotifrevealaddr' )
 843                 ) {
 844                         $editorAddress = new MailAddress( $this->editor );
 845                         if ( $wgEnotifFromEditor ) {
 846                                 $this->from = $editorAddress;
 847                         } else {
 848                                 $this->from = $adminAddress;
 849                                 $this->replyto = $editorAddress;
 850                         }
 851                 } else {
 852                         $this->from = $adminAddress;
 853                         $this->replyto = new MailAddress( $wgNoReplyAddress );
 854                 }
 855         }
 856
 857         /**
 858          * Compose a mail to a given user and either queue it for sending, or send it now,
 859          * depending on settings.
 860          *
 861          * Call sendMails() to send any mails that were queued.
 862          * @param User $user
 863          */
 864         function compose( $user ) {
 865                 global $wgEnotifImpersonal;
 866
 867                 if ( !$this->composed_common ) {
 868                         $this->composeCommonMailtext();
 869                 }
 870
 871                 if ( $wgEnotifImpersonal ) {
 872                         $this->mailTargets[] = new MailAddress( $user );
 873                 } else {
 874                         $this->sendPersonalised( $user );
 875                 }
 876         }
 877
 878         /**
 879          * Send any queued mails
 880          */
 881         function sendMails() {
 882                 global $wgEnotifImpersonal;
 883                 if ( $wgEnotifImpersonal ) {
 884                         $this->sendImpersonal( $this->mailTargets );
 885                 }
 886         }
 887
 888         /**
 889          * Does the per-user customizations to a notification e-mail (name,
 890          * timestamp in proper timezone, etc) and sends it out.
 891          * Returns true if the mail was sent successfully.
 892          *
 893          * @param User $watchingUser
 894          * @return bool
 895          * @private
 896          */
 897         function sendPersonalised( $watchingUser ) {
 898                 global $wgContLang, $wgEnotifUseRealName;
 899                 // From the PHP manual:
 900                 //   Note: The to parameter cannot be an address in the form of
 901                 //   "Something <someone@example.com>". The mail command will not parse
 902                 //   this properly while talking with the MTA.
 903                 $to = new MailAddress( $watchingUser );
 904
 905                 # $PAGEEDITDATE is the time and date of the page change
 906                 # expressed in terms of individual local time of the notification
 907                 # recipient, i.e. watching user
 908                 $body = str_replace(
 909                         array( '$WATCHINGUSERNAME',
 910                                 '$PAGEEDITDATE',
 911                                 '$PAGEEDITTIME' ),
 912                         array( $wgEnotifUseRealName && $watchingUser->getRealName() !== ''
 913                                         ? $watchingUser->getRealName() : $watchingUser->getName(),
 914                                 $wgContLang->userDate( $this->timestamp, $watchingUser ),
 915                                 $wgContLang->userTime( $this->timestamp, $watchingUser ) ),
 916                         $this->body );
 917
 918                 return UserMailer::send( $to, $this->from, $this->subject, $body, $this->replyto );
 919         }
 920
 921         /**
 922          * Same as sendPersonalised but does impersonal mail suitable for bulk
 923          * mailing.  Takes an array of MailAddress objects.
 924          * @param MailAddress[] $addresses
 925          * @return Status|null
 926          */
 927         function sendImpersonal( $addresses ) {
 928                 global $wgContLang;
 929
 930                 if ( empty( $addresses ) ) {
 931                         return null;
 932                 }
 933
 934                 $body = str_replace(
 935                                 array( '$WATCHINGUSERNAME',
 936                                         '$PAGEEDITDATE',
 937                                         '$PAGEEDITTIME' ),
 938                                 array( wfMessage( 'enotif_impersonal_salutation' )->inContentLanguage()->text(),
 939                                         $wgContLang->date( $this->timestamp, false, false ),
 940                                         $wgContLang->time( $this->timestamp, false, false ) ),
 941                                 $this->body );
 942
 943                 return UserMailer::send( $addresses, $this->from, $this->subject, $body, $this->replyto );
 944         }
 945
 946 } # end of class EmailNotification