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 use MediaWiki\Linker\LinkTarget;
  27
  28 use MediaWiki\MediaWikiServices;
  29
  30 /**
  31  * This module processes the email notifications when the current page is
  32  * changed. It looks up the table watchlist to find out which users are watching
  33  * that page.
  34  *
  35  * The current implementation sends independent emails to each watching user for
  36  * the following reason:
  37  *
  38  * - Each watching user will be notified about the page edit time expressed in
  39  * his/her local time (UTC is shown additionally). To achieve this, we need to
  40  * find the individual timeoffset of each watching user from the preferences..
  41  *
  42  * Suggested improvement to slack down the number of sent emails: We could think
  43  * of sending out bulk mails (bcc:user1,user2...) for all these users having the
  44  * same timeoffset in their preferences.
  45  *
  46  * Visit the documentation pages under
  47  * https://www.mediawiki.org/wiki/Help:Watching_pages
  48  */
  49 class EmailNotification {
  50
  51         /**
  52          * Notification is due to user's user talk being edited
  53          */
  54         const USER_TALK = 'user_talk';
  55         /**
  56          * Notification is due to a watchlisted page being edited
  57          */
  58         const WATCHLIST = 'watchlist';
  59         /**
  60          * Notification because user is notified for all changes
  61          */
  62         const ALL_CHANGES = 'all_changes';
  63
  64         protected $subject, $body, $replyto, $from;
  65         protected $timestamp, $summary, $minorEdit, $oldid, $composed_common, $pageStatus;
  66         protected $mailTargets = [];
  67
  68         /**
  69          * @var Title
  70          */
  71         protected $title;
  72
  73         /**
  74          * @var User
  75          */
  76         protected $editor;
  77
  78         /**
  79          * @deprecated since 1.27 use WatchedItemStore::updateNotificationTimestamp directly
  80          *
  81          * @param User $editor The editor that triggered the update.  Their notification
  82          *  timestamp will not be updated(they have already seen it)
  83          * @param LinkTarget $linkTarget The link target of the title to update timestamps for
  84          * @param string $timestamp Set the update timestamp to this value
  85          *
  86          * @return int[] Array of user IDs
  87          */
  88         public static function updateWatchlistTimestamp(
  89                 User $editor,
  90                 LinkTarget $linkTarget,
  91                 $timestamp
  92         ) {
  93                 // wfDeprecated( __METHOD__, '1.27' );
  94                 $config = RequestContext::getMain()->getConfig();
  95                 if ( !$config->get( 'EnotifWatchlist' ) && !$config->get( 'ShowUpdatedMarker' ) ) {
  96                         return [];
  97                 }
  98                 return MediaWikiServices::getInstance()->getWatchedItemStore()->updateNotificationTimestamp(
  99                         $editor,
 100                         $linkTarget,
 101                         $timestamp
 102                 );
 103         }
 104
 105         /**
 106          * Send emails corresponding to the user $editor editing the page $title.
 107          *
 108          * May be deferred via the job queue.
 109          *
 110          * @param User $editor
 111          * @param Title $title
 112          * @param string $timestamp
 113          * @param string $summary
 114          * @param bool $minorEdit
 115          * @param bool $oldid (default: false)
 116          * @param string $pageStatus (default: 'changed')
 117          */
 118         public function notifyOnPageChange( $editor, $title, $timestamp, $summary,
 119                 $minorEdit, $oldid = false, $pageStatus = 'changed'
 120         ) {
 121                 global $wgEnotifMinorEdits, $wgUsersNotifiedOnAllChanges, $wgEnotifUserTalk;
 122
 123                 if ( $title->getNamespace() < 0 ) {
 124                         return;
 125                 }
 126
 127                 // update wl_notificationtimestamp for watchers
 128                 $config = RequestContext::getMain()->getConfig();
 129                 $watchers = [];
 130                 if ( $config->get( 'EnotifWatchlist' ) || $config->get( 'ShowUpdatedMarker' ) ) {
 131                         $watchers = MediaWikiServices::getInstance()->getWatchedItemStore()->updateNotificationTimestamp(
 132                                 $editor,
 133                                 $title,
 134                                 $timestamp
 135                         );
 136                 }
 137
 138                 $sendEmail = true;
 139                 // $watchers deals with $wgEnotifWatchlist.
 140                 // If nobody is watching the page, and there are no users notified on all changes
 141                 // don't bother creating a job/trying to send emails, unless it's a
 142                 // talk page with an applicable notification.
 143                 if ( !count( $watchers ) && !count( $wgUsersNotifiedOnAllChanges ) ) {
 144                         $sendEmail = false;
 145                         // Only send notification for non minor edits, unless $wgEnotifMinorEdits
 146                         if ( !$minorEdit || ( $wgEnotifMinorEdits && !$editor->isAllowed( 'nominornewtalk' ) ) ) {
 147                                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 148                                 if ( $wgEnotifUserTalk
 149                                         && $isUserTalkPage
 150                                         && $this->canSendUserTalkEmail( $editor, $title, $minorEdit )
 151                                 ) {
 152                                         $sendEmail = true;
 153                                 }
 154                         }
 155                 }
 156
 157                 if ( $sendEmail ) {
 158                         JobQueueGroup::singleton()->lazyPush( new EnotifNotifyJob(
 159                                 $title,
 160                                 [
 161                                         'editor' => $editor->getName(),
 162                                         'editorID' => $editor->getId(),
 163                                         'timestamp' => $timestamp,
 164                                         'summary' => $summary,
 165                                         'minorEdit' => $minorEdit,
 166                                         'oldid' => $oldid,
 167                                         'watchers' => $watchers,
 168                                         'pageStatus' => $pageStatus
 169                                 ]
 170                         ) );
 171                 }
 172         }
 173
 174         /**
 175          * Immediate version of notifyOnPageChange().
 176          *
 177          * Send emails corresponding to the user $editor editing the page $title.
 178          *
 179          * @note Do not call directly. Use notifyOnPageChange so that wl_notificationtimestamp is updated.
 180          * @param User $editor
 181          * @param Title $title
 182          * @param string $timestamp Edit timestamp
 183          * @param string $summary Edit summary
 184          * @param bool $minorEdit
 185          * @param int $oldid Revision ID
 186          * @param array $watchers Array of user IDs
 187          * @param string $pageStatus
 188          * @throws MWException
 189          */
 190         public function actuallyNotifyOnPageChange( $editor, $title, $timestamp, $summary, $minorEdit,
 191                 $oldid, $watchers, $pageStatus = 'changed' ) {
 192                 # we use $wgPasswordSender as sender's address
 193                 global $wgUsersNotifiedOnAllChanges;
 194                 global $wgEnotifWatchlist, $wgBlockDisablesLogin;
 195                 global $wgEnotifMinorEdits, $wgEnotifUserTalk;
 196
 197                 # The following code is only run, if several conditions are met:
 198                 # 1. EmailNotification for pages (other than user_talk pages) must be enabled
 199                 # 2. minor edits (changes) are only regarded if the global flag indicates so
 200
 201                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 202
 203                 $this->title = $title;
 204                 $this->timestamp = $timestamp;
 205                 $this->summary = $summary;
 206                 $this->minorEdit = $minorEdit;
 207                 $this->oldid = $oldid;
 208                 $this->editor = $editor;
 209                 $this->composed_common = false;
 210                 $this->pageStatus = $pageStatus;
 211
 212                 $formattedPageStatus = [ 'deleted', 'created', 'moved', 'restored', 'changed' ];
 213
 214                 Hooks::run( 'UpdateUserMailerFormattedPageStatus', [ &$formattedPageStatus ] );
 215                 if ( !in_array( $this->pageStatus, $formattedPageStatus ) ) {
 216                         throw new MWException( 'Not a valid page status!' );
 217                 }
 218
 219                 $userTalkId = false;
 220
 221                 if ( !$minorEdit || ( $wgEnotifMinorEdits && !$editor->isAllowed( 'nominornewtalk' ) ) ) {
 222                         if ( $wgEnotifUserTalk
 223                                 && $isUserTalkPage
 224                                 && $this->canSendUserTalkEmail( $editor, $title, $minorEdit )
 225                         ) {
 226                                 $targetUser = User::newFromName( $title->getText() );
 227                                 $this->compose( $targetUser, self::USER_TALK );
 228                                 $userTalkId = $targetUser->getId();
 229                         }
 230
 231                         if ( $wgEnotifWatchlist ) {
 232                                 // Send updates to watchers other than the current editor
 233                                 // and don't send to watchers who are blocked and cannot login
 234                                 $userArray = UserArray::newFromIDs( $watchers );
 235                                 foreach ( $userArray as $watchingUser ) {
 236                                         if ( $watchingUser->getOption( 'enotifwatchlistpages' )
 237                                                 && ( !$minorEdit || $watchingUser->getOption( 'enotifminoredits' ) )
 238                                                 && $watchingUser->isEmailConfirmed()
 239                                                 && $watchingUser->getId() != $userTalkId
 240                                                 && !in_array( $watchingUser->getName(), $wgUsersNotifiedOnAllChanges )
 241                                                 && !( $wgBlockDisablesLogin && $watchingUser->isBlocked() )
 242                                         ) {
 243                                                 if ( Hooks::run( 'SendWatchlistEmailNotification', [ $watchingUser, $title, $this ] ) ) {
 244                                                         $this->compose( $watchingUser, self::WATCHLIST );
 245                                                 }
 246                                         }
 247                                 }
 248                         }
 249                 }
 250
 251                 foreach ( $wgUsersNotifiedOnAllChanges as $name ) {
 252                         if ( $editor->getName() == $name ) {
 253                                 // No point notifying the user that actually made the change!
 254                                 continue;
 255                         }
 256                         $user = User::newFromName( $name );
 257                         $this->compose( $user, self::ALL_CHANGES );
 258                 }
 259
 260                 $this->sendMails();
 261         }
 262
 263         /**
 264          * @param User $editor
 265          * @param Title $title
 266          * @param bool $minorEdit
 267          * @return bool
 268          */
 269         private function canSendUserTalkEmail( $editor, $title, $minorEdit ) {
 270                 global $wgEnotifUserTalk, $wgBlockDisablesLogin;
 271                 $isUserTalkPage = ( $title->getNamespace() == NS_USER_TALK );
 272
 273                 if ( $wgEnotifUserTalk && $isUserTalkPage ) {
 274                         $targetUser = User::newFromName( $title->getText() );
 275
 276                         if ( !$targetUser || $targetUser->isAnon() ) {
 277                                 wfDebug( __METHOD__ . ": user talk page edited, but user does not exist\n" );
 278                         } elseif ( $targetUser->getId() == $editor->getId() ) {
 279                                 wfDebug( __METHOD__ . ": user edited their own talk page, no notification sent\n" );
 280                         } elseif ( $wgBlockDisablesLogin && $targetUser->isBlocked() ) {
 281                                 wfDebug( __METHOD__ . ": talk page owner is blocked and cannot login, no notification sent\n" );
 282                         } elseif ( $targetUser->getOption( 'enotifusertalkpages' )
 283                                 && ( !$minorEdit || $targetUser->getOption( 'enotifminoredits' ) )
 284                         ) {
 285                                 if ( !$targetUser->isEmailConfirmed() ) {
 286                                         wfDebug( __METHOD__ . ": talk page owner doesn't have validated email\n" );
 287                                 } elseif ( !Hooks::run( 'AbortTalkPageEmailNotification', [ $targetUser, $title ] ) ) {
 288                                         wfDebug( __METHOD__ . ": talk page update notification is aborted for this user\n" );
 289                                 } else {
 290                                         wfDebug( __METHOD__ . ": sending talk page update notification\n" );
 291                                         return true;
 292                                 }
 293                         } else {
 294                                 wfDebug( __METHOD__ . ": talk page owner doesn't want notifications\n" );
 295                         }
 296                 }
 297                 return false;
 298         }
 299
 300         /**
 301          * Generate the generic "this page has been changed" e-mail text.
 302          */
 303         private function composeCommonMailtext() {
 304                 global $wgPasswordSender, $wgNoReplyAddress;
 305                 global $wgEnotifFromEditor, $wgEnotifRevealEditorAddress;
 306                 global $wgEnotifImpersonal, $wgEnotifUseRealName;
 307
 308                 $this->composed_common = true;
 309
 310                 # You as the WikiAdmin and Sysops can make use of plenty of
 311                 # named variables when composing your notification emails while
 312                 # simply editing the Meta pages
 313
 314                 $keys = [];
 315                 $postTransformKeys = [];
 316                 $pageTitleUrl = $this->title->getCanonicalURL();
 317                 $pageTitle = $this->title->getPrefixedText();
 318
 319                 if ( $this->oldid ) {
 320                         // Always show a link to the diff which triggered the mail. See T34210.
 321                         $keys['$NEWPAGE'] = "\n\n" . wfMessage( 'enotif_lastdiff',
 322                                         $this->title->getCanonicalURL( [ 'diff' => 'next', 'oldid' => $this->oldid ] ) )
 323                                         ->inContentLanguage()->text();
 324
 325                         if ( !$wgEnotifImpersonal ) {
 326                                 // For personal mail, also show a link to the diff of all changes
 327                                 // since last visited.
 328                                 $keys['$NEWPAGE'] .= "\n\n" . wfMessage( 'enotif_lastvisited',
 329                                                 $this->title->getCanonicalURL( [ 'diff' => '0', 'oldid' => $this->oldid ] ) )
 330                                                 ->inContentLanguage()->text();
 331                         }
 332                         $keys['$OLDID'] = $this->oldid;
 333                         // Deprecated since MediaWiki 1.21, not used by default. Kept for backwards-compatibility.
 334                         $keys['$CHANGEDORCREATED'] = wfMessage( 'changed' )->inContentLanguage()->text();
 335                 } else {
 336                         # clear $OLDID placeholder in the message template
 337                         $keys['$OLDID'] = '';
 338                         $keys['$NEWPAGE'] = '';
 339                         // Deprecated since MediaWiki 1.21, not used by default. Kept for backwards-compatibility.
 340                         $keys['$CHANGEDORCREATED'] = wfMessage( 'created' )->inContentLanguage()->text();
 341                 }
 342
 343                 $keys['$PAGETITLE'] = $this->title->getPrefixedText();
 344                 $keys['$PAGETITLE_URL'] = $this->title->getCanonicalURL();
 345                 $keys['$PAGEMINOREDIT'] = $this->minorEdit ?
 346                         wfMessage( 'enotif_minoredit' )->inContentLanguage()->text() : '';
 347                 $keys['$UNWATCHURL'] = $this->title->getCanonicalURL( 'action=unwatch' );
 348
 349                 if ( $this->editor->isAnon() ) {
 350                         # real anon (user:xxx.xxx.xxx.xxx)
 351                         $keys['$PAGEEDITOR'] = wfMessage( 'enotif_anon_editor', $this->editor->getName() )
 352                                 ->inContentLanguage()->text();
 353                         $keys['$PAGEEDITOR_EMAIL'] = wfMessage( 'noemailtitle' )->inContentLanguage()->text();
 354
 355                 } else {
 356                         $keys['$PAGEEDITOR'] = $wgEnotifUseRealName && $this->editor->getRealName() !== ''
 357                                 ? $this->editor->getRealName() : $this->editor->getName();
 358                         $emailPage = SpecialPage::getSafeTitleFor( 'Emailuser', $this->editor->getName() );
 359                         $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getCanonicalURL();
 360                 }
 361
 362                 $keys['$PAGEEDITOR_WIKI'] = $this->editor->getUserPage()->getCanonicalURL();
 363                 $keys['$HELPPAGE'] = wfExpandUrl(
 364                         Skin::makeInternalOrExternalUrl( wfMessage( 'helppage' )->inContentLanguage()->text() )
 365                 );
 366
 367                 # Replace this after transforming the message, T37019
 368                 $postTransformKeys['$PAGESUMMARY'] = $this->summary == '' ? ' - ' : $this->summary;
 369
 370                 // Now build message's subject and body
 371
 372                 // Messages:
 373                 // enotif_subject_deleted, enotif_subject_created, enotif_subject_moved,
 374                 // enotif_subject_restored, enotif_subject_changed
 375                 $this->subject = wfMessage( 'enotif_subject_' . $this->pageStatus )->inContentLanguage()
 376                         ->params( $pageTitle, $keys['$PAGEEDITOR'] )->text();
 377
 378                 // Messages:
 379                 // enotif_body_intro_deleted, enotif_body_intro_created, enotif_body_intro_moved,
 380                 // enotif_body_intro_restored, enotif_body_intro_changed
 381                 $keys['$PAGEINTRO'] = wfMessage( 'enotif_body_intro_' . $this->pageStatus )
 382                         ->inContentLanguage()->params( $pageTitle, $keys['$PAGEEDITOR'], $pageTitleUrl )
 383                         ->text();
 384
 385                 $body = wfMessage( 'enotif_body' )->inContentLanguage()->plain();
 386                 $body = strtr( $body, $keys );
 387                 $body = MessageCache::singleton()->transform( $body, false, null, $this->title );
 388                 $this->body = wordwrap( strtr( $body, $postTransformKeys ), 72 );
 389
 390                 # Reveal the page editor's address as REPLY-TO address only if
 391                 # the user has not opted-out and the option is enabled at the
 392                 # global configuration level.
 393                 $adminAddress = new MailAddress( $wgPasswordSender,
 394                         wfMessage( 'emailsender' )->inContentLanguage()->text() );
 395                 if ( $wgEnotifRevealEditorAddress
 396                         && ( $this->editor->getEmail() != '' )
 397                         && $this->editor->getOption( 'enotifrevealaddr' )
 398                 ) {
 399                         $editorAddress = MailAddress::newFromUser( $this->editor );
 400                         if ( $wgEnotifFromEditor ) {
 401                                 $this->from = $editorAddress;
 402                         } else {
 403                                 $this->from = $adminAddress;
 404                                 $this->replyto = $editorAddress;
 405                         }
 406                 } else {
 407                         $this->from = $adminAddress;
 408                         $this->replyto = new MailAddress( $wgNoReplyAddress );
 409                 }
 410         }
 411
 412         /**
 413          * Compose a mail to a given user and either queue it for sending, or send it now,
 414          * depending on settings.
 415          *
 416          * Call sendMails() to send any mails that were queued.
 417          * @param User $user
 418          * @param string $source
 419          */
 420         function compose( $user, $source ) {
 421                 global $wgEnotifImpersonal;
 422
 423                 if ( !$this->composed_common ) {
 424                         $this->composeCommonMailtext();
 425                 }
 426
 427                 if ( $wgEnotifImpersonal ) {
 428                         $this->mailTargets[] = MailAddress::newFromUser( $user );
 429                 } else {
 430                         $this->sendPersonalised( $user, $source );
 431                 }
 432         }
 433
 434         /**
 435          * Send any queued mails
 436          */
 437         function sendMails() {
 438                 global $wgEnotifImpersonal;
 439                 if ( $wgEnotifImpersonal ) {
 440                         $this->sendImpersonal( $this->mailTargets );
 441                 }
 442         }
 443
 444         /**
 445          * Does the per-user customizations to a notification e-mail (name,
 446          * timestamp in proper timezone, etc) and sends it out.
 447          * Returns true if the mail was sent successfully.
 448          *
 449          * @param User $watchingUser
 450          * @param string $source
 451          * @return bool
 452          * @private
 453          */
 454         function sendPersonalised( $watchingUser, $source ) {
 455                 global $wgContLang, $wgEnotifUseRealName;
 456                 // From the PHP manual:
 457                 //   Note: The to parameter cannot be an address in the form of
 458                 //   "Something <someone@example.com>". The mail command will not parse
 459                 //   this properly while talking with the MTA.
 460                 $to = MailAddress::newFromUser( $watchingUser );
 461
 462                 # $PAGEEDITDATE is the time and date of the page change
 463                 # expressed in terms of individual local time of the notification
 464                 # recipient, i.e. watching user
 465                 $body = str_replace(
 466                         [ '$WATCHINGUSERNAME',
 467                                 '$PAGEEDITDATE',
 468                                 '$PAGEEDITTIME' ],
 469                         [ $wgEnotifUseRealName && $watchingUser->getRealName() !== ''
 470                                 ? $watchingUser->getRealName() : $watchingUser->getName(),
 471                                 $wgContLang->userDate( $this->timestamp, $watchingUser ),
 472                                 $wgContLang->userTime( $this->timestamp, $watchingUser ) ],
 473                         $this->body );
 474
 475                 $headers = [];
 476                 if ( $source === self::WATCHLIST ) {
 477                         $headers['List-Help'] = 'https://www.mediawiki.org/wiki/Special:MyLanguage/Help:Watchlist';
 478                 }
 479
 480                 return UserMailer::send( $to, $this->from, $this->subject, $body, [
 481                         'replyTo' => $this->replyto,
 482                         'headers' => $headers,
 483                 ] );
 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                 $body = str_replace(
 500                         [ '$WATCHINGUSERNAME',
 501                                 '$PAGEEDITDATE',
 502                                 '$PAGEEDITTIME' ],
 503                         [ 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, [
 509                         'replyTo' => $this->replyto,
 510                 ] );
 511         }
 512
 513 }