includes/mail/EmailNotification.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  * This module processes the email notifications when the current page is
  29  * changed. It looks up the table watchlist to find out which users are watching
  30  * that page.
  31  *
  32  * The current implementation sends independent emails to each watching user for
  33  * the following reason:
  34  *
  35  * - Each watching user will be notified about the page edit time expressed in
  36  * his/her local time (UTC is shown additionally). To achieve this, we need to
  37  * find the individual timeoffset of each watching user from the preferences..
  38  *
  39  * Suggested improvement to slack down the number of sent emails: We could think
  40  * of sending out bulk mails (bcc:user1,user2...) for all these users having the
  41  * same timeoffset in their preferences.
  42  *
  43  * Visit the documentation pages under http://meta.wikipedia.com/Enotif
  44  */
  45 class EmailNotification {
  46         protected $subject, $body, $replyto, $from;
  47         protected $timestamp, $summary, $minorEdit, $oldid, $composed_common, $pageStatus;
  48         protected $mailTargets = array();
  49
  50         /**
  51          * @var Title
  52          */
  53         protected $title;
  54
  55         /**
  56          * @var User
  57          */
  58         protected $editor;
  59
  60         /**
  61          * @param User $editor The editor that triggered the update.  Their notification
  62          *  timestamp will not be updated(they have already seen it)
  63          * @param Title $title The title to update timestamps for
  64          * @param string $timestamp Set the update timestamp to this value
  65          * @return int[]
  66          */
  67         public static function updateWatchlistTimestamp( User $editor, Title $title, $timestamp ) {
  68                 global $wgEnotifWatchlist, $wgShowUpdatedMarker;
  69
  70                 if ( !$wgEnotifWatchlist && !$wgShowUpdatedMarker ) {
  71                         return array();
  72                 }
  73
  74                 $dbw = wfGetDB( DB_MASTER );
  75                 $res = $dbw->select( array( 'watchlist' ),
  76                         array( 'wl_user' ),
  77                         array(
  78                                 'wl_user != ' . intval( $editor->getID() ),
  79                                 'wl_namespace' => $title->getNamespace(),
  80                                 'wl_title' => $title->getDBkey(),
  81                                 'wl_notificationtimestamp IS NULL',
  82                         ), __METHOD__
  83                 );
  84
  85                 $watchers = array();
  86                 foreach ( $res as $row ) {
  87                         $watchers[] = intval( $row->wl_user );
  88                 }
  89
  90                 if ( $watchers ) {
  91                         // Update wl_notificationtimestamp for all watching users except the editor
  92                         $fname = __METHOD__;
  93                         $dbw->onTransactionIdle(
  94                                 function () use ( $dbw, $timestamp, $watchers, $title, $fname ) {
  95                                         $dbw->update( 'watchlist',
  96                                                 array( /* SET */
  97                                                         'wl_notificationtimestamp' => $dbw->timestamp( $timestamp )
  98                                                 ), array( /* WHERE */
  99                                                         'wl_user' => $watchers,
 100                                                         'wl_namespace' => $title->getNamespace(),
 101                                                         'wl_title' => $title->getDBkey(),
 102                                                 ), $fname
 103                                         );
 104                                 }
 105                         );
 106                 }
 107
 108                 return $watchers;
 109         }
 110
 111         /**
 112          * Send emails corresponding to the user $editor editing the page $title.
 113          *
 114          * May be deferred via the job queue.
 115          *
 116          * @param User $editor
 117          * @param Title $title
 118          * @param string $timestamp
 119          * @param string $summary
 120          * @param bool $minorEdit
 121          * @param bool $oldid (default: false)
 122          * @param string $pageStatus (default: 'changed')
 123          */
 124         public function notifyOnPageChange( $editor, $title, $timestamp, $summary,
 125                 $minorEdit, $oldid = false, $pageStatus = 'changed'
 126         ) {
 127                 global $wgEnotifUseJobQ, $wgEnotifMinorEdits, $wgUsersNotifiedOnAllChanges, $wgEnotifUserTalk;
 128
 129                 if ( $title->getNamespace() < 0 ) {
 130                         return;
 131                 }
 132
 133                 // update wl_notificationtimestamp for watchers
 134                 $watchers = self::updateWatchlistTimestamp( $editor, $title, $timestamp );
 135
 136                 $sendEmail = true;
 137                 // If nobody is watching the page, and there are no users notified on all changes
 138                 // don't bother creating a job/trying to send emails
 139                 // $watchers deals with $wgEnotifWatchlist
 140                 if ( !count( $watchers ) && !count( $wgUsersNotifiedOnAllChanges ) ) {
 141                         $sendEmail = false;
 142                         // Only send notification for non minor edits, unless $wgEnotifMinorEdits
 143                         if ( !$minorEdit || ( $wgEnotifMinorEdits && !$editor->isAllowed( 'nominornewtalk' ) ) ) {
 144                                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 145                                 if ( $wgEnotifUserTalk
 146                                         && $isUserTalkPage
 147                                         && $this->canSendUserTalkEmail( $editor, $title, $minorEdit )
 148                                 ) {
 149                                         $sendEmail = true;
 150                                 }
 151                         }
 152                 }
 153
 154                 if ( !$sendEmail ) {
 155                         return;
 156                 }
 157
 158                 if ( $wgEnotifUseJobQ ) {
 159                         $params = array(
 160                                 'editor' => $editor->getName(),
 161                                 'editorID' => $editor->getID(),
 162                                 'timestamp' => $timestamp,
 163                                 'summary' => $summary,
 164                                 'minorEdit' => $minorEdit,
 165                                 'oldid' => $oldid,
 166                                 'watchers' => $watchers,
 167                                 'pageStatus' => $pageStatus
 168                         );
 169                         $job = new EnotifNotifyJob( $title, $params );
 170                         JobQueueGroup::singleton()->lazyPush( $job );
 171                 } else {
 172                         $this->actuallyNotifyOnPageChange(
 173                                 $editor,
 174                                 $title,
 175                                 $timestamp,
 176                                 $summary,
 177                                 $minorEdit,
 178                                 $oldid,
 179                                 $watchers,
 180                                 $pageStatus
 181                         );
 182                 }
 183         }
 184
 185         /**
 186          * Immediate version of notifyOnPageChange().
 187          *
 188          * Send emails corresponding to the user $editor editing the page $title.
 189          *
 190          * @note Do not call directly. Use notifyOnPageChange so that wl_notificationtimestamp is updated.
 191          * @param User $editor
 192          * @param Title $title
 193          * @param string $timestamp Edit timestamp
 194          * @param string $summary Edit summary
 195          * @param bool $minorEdit
 196          * @param int $oldid Revision ID
 197          * @param array $watchers Array of user IDs
 198          * @param string $pageStatus
 199          * @throws MWException
 200          */
 201         public function actuallyNotifyOnPageChange( $editor, $title, $timestamp, $summary, $minorEdit,
 202                 $oldid, $watchers, $pageStatus = 'changed' ) {
 203                 # we use $wgPasswordSender as sender's address
 204                 global $wgEnotifWatchlist, $wgBlockDisablesLogin;
 205                 global $wgEnotifMinorEdits, $wgEnotifUserTalk;
 206
 207                 # The following code is only run, if several conditions are met:
 208                 # 1. EmailNotification for pages (other than user_talk pages) must be enabled
 209                 # 2. minor edits (changes) are only regarded if the global flag indicates so
 210
 211                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 212
 213                 $this->title = $title;
 214                 $this->timestamp = $timestamp;
 215                 $this->summary = $summary;
 216                 $this->minorEdit = $minorEdit;
 217                 $this->oldid = $oldid;
 218                 $this->editor = $editor;
 219                 $this->composed_common = false;
 220                 $this->pageStatus = $pageStatus;
 221
 222                 $formattedPageStatus = array( 'deleted', 'created', 'moved', 'restored', 'changed' );
 223
 224                 Hooks::run( 'UpdateUserMailerFormattedPageStatus', array( &$formattedPageStatus ) );
 225                 if ( !in_array( $this->pageStatus, $formattedPageStatus ) ) {
 226                         throw new MWException( 'Not a valid page status!' );
 227                 }
 228
 229                 $userTalkId = false;
 230
 231                 if ( !$minorEdit || ( $wgEnotifMinorEdits && !$editor->isAllowed( 'nominornewtalk' ) ) ) {
 232                         if ( $wgEnotifUserTalk
 233                                 && $isUserTalkPage
 234                                 && $this->canSendUserTalkEmail( $editor, $title, $minorEdit )
 235                         ) {
 236                                 $targetUser = User::newFromName( $title->getText() );
 237                                 $this->compose( $targetUser );
 238                                 $userTalkId = $targetUser->getId();
 239                         }
 240
 241                         if ( $wgEnotifWatchlist ) {
 242                                 // Send updates to watchers other than the current editor
 243                                 // and don't send to watchers who are blocked and cannot login
 244                                 $userArray = UserArray::newFromIDs( $watchers );
 245                                 foreach ( $userArray as $watchingUser ) {
 246                                         if ( $watchingUser->getOption( 'enotifwatchlistpages' )
 247                                                 && ( !$minorEdit || $watchingUser->getOption( 'enotifminoredits' ) )
 248                                                 && $watchingUser->isEmailConfirmed()
 249                                                 && $watchingUser->getID() != $userTalkId
 250                                                 && !( $wgBlockDisablesLogin && $watchingUser->isBlocked() )
 251                                         ) {
 252                                                 if ( Hooks::run( 'SendWatchlistEmailNotification', array( $watchingUser, $title, $this ) ) ) {
 253                                                         $this->compose( $watchingUser );
 254                                                 }
 255                                         }
 256                                 }
 257                         }
 258                 }
 259
 260                 global $wgUsersNotifiedOnAllChanges;
 261                 foreach ( $wgUsersNotifiedOnAllChanges as $name ) {
 262                         if ( $editor->getName() == $name ) {
 263                                 // No point notifying the user that actually made the change!
 264                                 continue;
 265                         }
 266                         $user = User::newFromName( $name );
 267                         $this->compose( $user );
 268                 }
 269
 270                 $this->sendMails();
 271         }
 272
 273         /**
 274          * @param User $editor
 275          * @param Title $title
 276          * @param bool $minorEdit
 277          * @return bool
 278          */
 279         private function canSendUserTalkEmail( $editor, $title, $minorEdit ) {
 280                 global $wgEnotifUserTalk, $wgBlockDisablesLogin;
 281                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 282
 283                 if ( $wgEnotifUserTalk && $isUserTalkPage ) {
 284                         $targetUser = User::newFromName( $title->getText() );
 285
 286                         if ( !$targetUser || $targetUser->isAnon() ) {
 287                                 wfDebug( __METHOD__ . ": user talk page edited, but user does not exist\n" );
 288                         } elseif ( $targetUser->getId() == $editor->getId() ) {
 289                                 wfDebug( __METHOD__ . ": user edited their own talk page, no notification sent\n" );
 290                         } elseif ( $wgBlockDisablesLogin && $targetUser->isBlocked() ) {
 291                                 wfDebug( __METHOD__ . ": talk page owner is blocked and cannot login, no notification sent\n" );
 292                         } elseif ( $targetUser->getOption( 'enotifusertalkpages' )
 293                                 && ( !$minorEdit || $targetUser->getOption( 'enotifminoredits' ) )
 294                         ) {
 295                                 if ( !$targetUser->isEmailConfirmed() ) {
 296                                         wfDebug( __METHOD__ . ": talk page owner doesn't have validated email\n" );
 297                                 } elseif ( !Hooks::run( 'AbortTalkPageEmailNotification', array( $targetUser, $title ) ) ) {
 298                                         wfDebug( __METHOD__ . ": talk page update notification is aborted for this user\n" );
 299                                 } else {
 300                                         wfDebug( __METHOD__ . ": sending talk page update notification\n" );
 301                                         return true;
 302                                 }
 303                         } else {
 304                                 wfDebug( __METHOD__ . ": talk page owner doesn't want notifications\n" );
 305                         }
 306                 }
 307                 return false;
 308         }
 309
 310         /**
 311          * Generate the generic "this page has been changed" e-mail text.
 312          */
 313         private function composeCommonMailtext() {
 314                 global $wgPasswordSender, $wgNoReplyAddress;
 315                 global $wgEnotifFromEditor, $wgEnotifRevealEditorAddress;
 316                 global $wgEnotifImpersonal, $wgEnotifUseRealName;
 317
 318                 $this->composed_common = true;
 319
 320                 # You as the WikiAdmin and Sysops can make use of plenty of
 321                 # named variables when composing your notification emails while
 322                 # simply editing the Meta pages
 323
 324                 $keys = array();
 325                 $postTransformKeys = array();
 326                 $pageTitleUrl = $this->title->getCanonicalURL();
 327                 $pageTitle = $this->title->getPrefixedText();
 328
 329                 if ( $this->oldid ) {
 330                         // Always show a link to the diff which triggered the mail. See bug 32210.
 331                         $keys['$NEWPAGE'] = "\n\n" . wfMessage( 'enotif_lastdiff',
 332                                         $this->title->getCanonicalURL( array( 'diff' => 'next', 'oldid' => $this->oldid ) ) )
 333                                         ->inContentLanguage()->text();
 334
 335                         if ( !$wgEnotifImpersonal ) {
 336                                 // For personal mail, also show a link to the diff of all changes
 337                                 // since last visited.
 338                                 $keys['$NEWPAGE'] .= "\n\n" . wfMessage( 'enotif_lastvisited',
 339                                                 $this->title->getCanonicalURL( array( 'diff' => '0', 'oldid' => $this->oldid ) ) )
 340                                                 ->inContentLanguage()->text();
 341                         }
 342                         $keys['$OLDID'] = $this->oldid;
 343                         // Deprecated since MediaWiki 1.21, not used by default. Kept for backwards-compatibility.
 344                         $keys['$CHANGEDORCREATED'] = wfMessage( 'changed' )->inContentLanguage()->text();
 345                 } else {
 346                         # clear $OLDID placeholder in the message template
 347                         $keys['$OLDID'] = '';
 348                         $keys['$NEWPAGE'] = '';
 349                         // Deprecated since MediaWiki 1.21, not used by default. Kept for backwards-compatibility.
 350                         $keys['$CHANGEDORCREATED'] = wfMessage( 'created' )->inContentLanguage()->text();
 351                 }
 352
 353                 $keys['$PAGETITLE'] = $this->title->getPrefixedText();
 354                 $keys['$PAGETITLE_URL'] = $this->title->getCanonicalURL();
 355                 $keys['$PAGEMINOREDIT'] = $this->minorEdit ?
 356                         wfMessage( 'minoredit' )->inContentLanguage()->text() : '';
 357                 $keys['$UNWATCHURL'] = $this->title->getCanonicalURL( 'action=unwatch' );
 358
 359                 if ( $this->editor->isAnon() ) {
 360                         # real anon (user:xxx.xxx.xxx.xxx)
 361                         $keys['$PAGEEDITOR'] = wfMessage( 'enotif_anon_editor', $this->editor->getName() )
 362                                 ->inContentLanguage()->text();
 363                         $keys['$PAGEEDITOR_EMAIL'] = wfMessage( 'noemailtitle' )->inContentLanguage()->text();
 364
 365                 } else {
 366                         $keys['$PAGEEDITOR'] = $wgEnotifUseRealName && $this->editor->getRealName() !== ''
 367                                 ? $this->editor->getRealName() : $this->editor->getName();
 368                         $emailPage = SpecialPage::getSafeTitleFor( 'Emailuser', $this->editor->getName() );
 369                         $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getCanonicalURL();
 370                 }
 371
 372                 $keys['$PAGEEDITOR_WIKI'] = $this->editor->getUserPage()->getCanonicalURL();
 373                 $keys['$HELPPAGE'] = wfExpandUrl(
 374                         Skin::makeInternalOrExternalUrl( wfMessage( 'helppage' )->inContentLanguage()->text() )
 375                 );
 376
 377                 # Replace this after transforming the message, bug 35019
 378                 $postTransformKeys['$PAGESUMMARY'] = $this->summary == '' ? ' - ' : $this->summary;
 379
 380                 // Now build message's subject and body
 381
 382                 // Messages:
 383                 // enotif_subject_deleted, enotif_subject_created, enotif_subject_moved,
 384                 // enotif_subject_restored, enotif_subject_changed
 385                 $this->subject = wfMessage( 'enotif_subject_' . $this->pageStatus )->inContentLanguage()
 386                         ->params( $pageTitle, $keys['$PAGEEDITOR'] )->text();
 387
 388                 // Messages:
 389                 // enotif_body_intro_deleted, enotif_body_intro_created, enotif_body_intro_moved,
 390                 // enotif_body_intro_restored, enotif_body_intro_changed
 391                 $keys['$PAGEINTRO'] = wfMessage( 'enotif_body_intro_' . $this->pageStatus )
 392                         ->inContentLanguage()->params( $pageTitle, $keys['$PAGEEDITOR'], $pageTitleUrl )
 393                         ->text();
 394
 395                 $body = wfMessage( 'enotif_body' )->inContentLanguage()->plain();
 396                 $body = strtr( $body, $keys );
 397                 $body = MessageCache::singleton()->transform( $body, false, null, $this->title );
 398                 $this->body = wordwrap( strtr( $body, $postTransformKeys ), 72 );
 399
 400                 # Reveal the page editor's address as REPLY-TO address only if
 401                 # the user has not opted-out and the option is enabled at the
 402                 # global configuration level.
 403                 $adminAddress = new MailAddress( $wgPasswordSender,
 404                         wfMessage( 'emailsender' )->inContentLanguage()->text() );
 405                 if ( $wgEnotifRevealEditorAddress
 406                         && ( $this->editor->getEmail() != '' )
 407                         && $this->editor->getOption( 'enotifrevealaddr' )
 408                 ) {
 409                         $editorAddress = MailAddress::newFromUser( $this->editor );
 410                         if ( $wgEnotifFromEditor ) {
 411                                 $this->from = $editorAddress;
 412                         } else {
 413                                 $this->from = $adminAddress;
 414                                 $this->replyto = $editorAddress;
 415                         }
 416                 } else {
 417                         $this->from = $adminAddress;
 418                         $this->replyto = new MailAddress( $wgNoReplyAddress );
 419                 }
 420         }
 421
 422         /**
 423          * Compose a mail to a given user and either queue it for sending, or send it now,
 424          * depending on settings.
 425          *
 426          * Call sendMails() to send any mails that were queued.
 427          * @param User $user
 428          */
 429         function compose( $user ) {
 430                 global $wgEnotifImpersonal;
 431
 432                 if ( !$this->composed_common ) {
 433                         $this->composeCommonMailtext();
 434                 }
 435
 436                 if ( $wgEnotifImpersonal ) {
 437                         $this->mailTargets[] = MailAddress::newFromUser( $user );
 438                 } else {
 439                         $this->sendPersonalised( $user );
 440                 }
 441         }
 442
 443         /**
 444          * Send any queued mails
 445          */
 446         function sendMails() {
 447                 global $wgEnotifImpersonal;
 448                 if ( $wgEnotifImpersonal ) {
 449                         $this->sendImpersonal( $this->mailTargets );
 450                 }
 451         }
 452
 453         /**
 454          * Does the per-user customizations to a notification e-mail (name,
 455          * timestamp in proper timezone, etc) and sends it out.
 456          * Returns true if the mail was sent successfully.
 457          *
 458          * @param User $watchingUser
 459          * @return bool
 460          * @private
 461          */
 462         function sendPersonalised( $watchingUser ) {
 463                 global $wgContLang, $wgEnotifUseRealName;
 464                 // From the PHP manual:
 465                 //   Note: The to parameter cannot be an address in the form of
 466                 //   "Something <someone@example.com>". The mail command will not parse
 467                 //   this properly while talking with the MTA.
 468                 $to = MailAddress::newFromUser( $watchingUser );
 469
 470                 # $PAGEEDITDATE is the time and date of the page change
 471                 # expressed in terms of individual local time of the notification
 472                 # recipient, i.e. watching user
 473                 $body = str_replace(
 474                         array( '$WATCHINGUSERNAME',
 475                                 '$PAGEEDITDATE',
 476                                 '$PAGEEDITTIME' ),
 477                         array( $wgEnotifUseRealName && $watchingUser->getRealName() !== ''
 478                                 ? $watchingUser->getRealName() : $watchingUser->getName(),
 479                                 $wgContLang->userDate( $this->timestamp, $watchingUser ),
 480                                 $wgContLang->userTime( $this->timestamp, $watchingUser ) ),
 481                         $this->body );
 482
 483                 return UserMailer::send( $to, $this->from, $this->subject, $body, $this->replyto );
 484         }
 485
 486         /**
 487          * Same as sendPersonalised but does impersonal mail suitable for bulk
 488          * mailing.  Takes an array of MailAddress objects.
 489          * @param MailAddress[] $addresses
 490          * @return Status|null
 491          */
 492         function sendImpersonal( $addresses ) {
 493                 global $wgContLang;
 494
 495                 if ( empty( $addresses ) ) {
 496                         return null;
 497                 }
 498
 499                 $body = str_replace(
 500                         array( '$WATCHINGUSERNAME',
 501                                 '$PAGEEDITDATE',
 502                                 '$PAGEEDITTIME' ),
 503                         array( wfMessage( 'enotif_impersonal_salutation' )->inContentLanguage()->text(),
 504                                 $wgContLang->date( $this->timestamp, false, false ),
 505                                 $wgContLang->time( $this->timestamp, false, false ) ),
 506                         $this->body );
 507
 508                 return UserMailer::send( $addresses, $this->from, $this->subject, $body, $this->replyto );
 509         }
 510
 511 }