includes/UserMailer.php

   1 <?php
   2 /**
   3  * UserMailer.php
   4  *  Copyright (C) 2004 Thomas Gries <mail@tgries.de>
   5  * http://www.mediawiki.org/
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @author <brion@pobox.com>
  23  * @author <mail@tgries.de>
  24  *
  25  * @package MediaWiki
  26  */
  27
  28 require_once( 'WikiError.php' );
  29
  30 /**
  31  * Converts a string into a valid RFC 822 "phrase", such as is used for the sender name
  32  */
  33 function wfRFC822Phrase( $phrase ) {
  34         $phrase = strtr( $phrase, array( "\r" => '', "\n" => '', '"' => '' ) );
  35         return '"' . $phrase . '"';
  36 }
  37
  38 /**
  39  * This function will perform a direct (authenticated) login to
  40  * a SMTP Server to use for mail relaying if 'wgSMTP' specifies an
  41  * array of parameters. It requires PEAR:Mail to do that.
  42  * Otherwise it just uses the standard PHP 'mail' function.
  43  *
  44  * @param string $to recipient's email
  45  * @param string $from sender's email
  46  * @param string $subject email's subject
  47  * @param string $body email's text
  48  * @param string $replyto optional reply-to email (default : false)
  49  */
  50 function userMailer( $to, $from, $subject, $body, $replyto=false ) {
  51         global $wgUser, $wgSMTP, $wgOutputEncoding, $wgErrorString, $wgEmergencyContact;
  52
  53         if (is_array( $wgSMTP )) {
  54                 require_once( 'Mail.php' );
  55
  56                 $timestamp = time();
  57
  58                 $headers['From'] = $from;
  59                 if ( $replyto ) {
  60                         $headers['Reply-To'] = $replyto;
  61                 }
  62                 $headers['Subject'] = $subject;
  63                 $headers['MIME-Version'] = '1.0';
  64                 $headers['Content-type'] = 'text/plain; charset='.$wgOutputEncoding;
  65                 $headers['Content-transfer-encoding'] = '8bit';
  66                 $headers['Message-ID'] = "<{$timestamp}" . $wgUser->getName() . '@' . $wgSMTP['IDHost'] . '>';
  67                 $headers['X-Mailer'] = 'MediaWiki mailer';
  68
  69                 // Create the mail object using the Mail::factory method
  70                 $mail_object =& Mail::factory('smtp', $wgSMTP);
  71                 wfDebug( "Sending mail via PEAR::Mail\n" );
  72                 $mailResult =& $mail_object->send($to, $headers, $body);
  73
  74                 # Based on the result return an error string,
  75                 if ($mailResult === true)
  76                         return '';
  77                 else if (is_object($mailResult))
  78                         return $mailResult->getMessage();
  79                 else
  80                         return 'Mail object return unknown error.';
  81         } else  {
  82                 # In the following $headers = expression we removed "Reply-To: {$from}\r\n" , because it is treated differently
  83                 # (fifth parameter of the PHP mail function, see some lines below)
  84                 $headers =
  85                         "MIME-Version: 1.0\n" .
  86                         "Content-type: text/plain; charset={$wgOutputEncoding}\n" .
  87                         "Content-Transfer-Encoding: 8bit\n" .
  88                         "X-Mailer: MediaWiki mailer\n".
  89                         'From: ' . $from . "\n";
  90                 if ($replyto) {
  91                         $headers .= "Reply-To: $replyto\n";
  92                 }
  93
  94                 $wgErrorString = '';
  95                 set_error_handler( 'mailErrorHandler' );
  96                 wfDebug( "Sending mail via internal mail() function\n" );
  97                 mail( $to, $subject, $body, $headers );
  98                 restore_error_handler();
  99
 100                 if ( $wgErrorString ) {
 101                         wfDebug( "Error sending mail: $wgErrorString\n" );
 102                 }
 103                 return $wgErrorString;
 104         }
 105 }
 106
 107 /**
 108  * @todo document
 109  */
 110 function mailErrorHandler( $code, $string ) {
 111         global $wgErrorString;
 112         $wgErrorString = preg_replace( "/^mail\(\): /", "", $string );
 113 }
 114
 115
 116 /**
 117  * This module processes the email notifications when the current page is
 118  * changed. It looks up the table watchlist to find out which users are watching
 119  * that page.
 120  *
 121  * The current implementation sends independent emails to each watching user for
 122  * the following reason:
 123  *
 124  * - Each watching user will be notified about the page edit time expressed in
 125  * his/her local time (UTC is shown additionally). To achieve this, we need to
 126  * find the individual timeoffset of each watching user from the preferences..
 127  *
 128  * Suggested improvement to slack down the number of sent emails: We could think
 129  * of sending out bulk mails (bcc:user1,user2...) for all these users having the
 130  * same timeoffset in their preferences.
 131  *
 132  * Visit the documentation pages under http://meta.wikipedia.com/Enotif
 133  *
 134  * @package MediaWiki
 135  *
 136  */
 137 class EmailNotification {
 138         /**#@+
 139          * @access private
 140          */
 141         var $to, $subject, $body, $replyto, $from;
 142         var $user, $title, $timestamp, $summary, $minorEdit, $oldid;
 143
 144         /**#@-*/
 145
 146         /**
 147          * @todo document
 148          * @param $currentPage
 149          * @param $currentNs
 150          * @param $timestamp
 151          * @param $currentSummary
 152          * @param $currentMinorEdit
 153          * @param $oldid (default: false)
 154          */
 155         function notifyOnPageChange(&$title, $timestamp, $summary, $minorEdit, $oldid=false) {
 156
 157                 # we use $wgEmergencyContact as sender's address
 158                 global $wgUser, $wgLang, $wgEmergencyContact;
 159                 global $wgEnotifWatchlist, $wgEnotifMinorEdits;
 160                 global $wgEnotifUserTalk;
 161                 global $wgEnotifRevealEditorAddress;
 162                 global $wgEnotifFromEditor;
 163                 global $wgEmailAuthentication;
 164                 global $wgShowUpdatedMarker;
 165
 166                 $fname = 'UserMailer::notifyOnPageChange';
 167                 wfProfileIn( $fname );
 168
 169                 # The following code is only run, if several conditions are met:
 170                 # 1. EmailNotification for pages (other than user_talk pages) must be enabled
 171                 # 2. minor edits (changes) are only regarded if the global flag indicates so
 172
 173                 $isUserTalkPage = ($title->getNamespace() == NS_USER_TALK);
 174                 $enotifusertalkpage = ($isUserTalkPage && $wgEnotifUserTalk);
 175                 $enotifwatchlistpage = (!$isUserTalkPage && $wgEnotifWatchlist);
 176
 177
 178                 if ( ($enotifusertalkpage || $enotifwatchlistpage) && (!$minorEdit || $wgEnotifMinorEdits) ) {
 179                         $dbr =& wfGetDB( DB_MASTER );
 180                         extract( $dbr->tableNames( 'watchlist' ) );
 181                         $res = $dbr->select( 'watchlist', array( 'wl_user' ),
 182                                 array(
 183                                         'wl_title' => $title->getDBkey(),
 184                                         'wl_namespace' => $title->getNamespace(),
 185                                         'wl_user <> ' . $wgUser->getID(),
 186                                         'wl_notificationtimestamp <= 1',
 187                                 ), $fname );
 188
 189                         # if anyone is watching ... set up the email message text which is
 190                         # common for all receipients ...
 191                         if ( $dbr->numRows( $res ) > 0 ) {
 192                                 $this->user &= $wgUser;
 193                                 $this->title =& $title;
 194                                 $this->timestamp = $timestamp;
 195                                 $this->summary = $summary;
 196                                 $this->minorEdit = $minorEdit;
 197                                 $this->oldid = $oldid;
 198
 199                                 $this->composeCommonMailtext();
 200                                 $watchingUser = new User();
 201
 202                                 # ... now do for all watching users ... if the options fit
 203                                 for ($i = 1; $i <= $dbr->numRows( $res ); $i++) {
 204
 205                                         $wuser = $dbr->fetchObject( $res );
 206                                         $watchingUser->setID($wuser->wl_user);
 207                                         if ( ( $enotifwatchlistpage && $watchingUser->getOption('enotifwatchlistpages') ) ||
 208                                                 ( $enotifusertalkpage && $watchingUser->getOption('enotifusertalkpages') )
 209                                         && (!$minorEdit || ($wgEnotifMinorEdits && $watchingUser->getOption('enotifminoredits') ) )
 210                                         && ($watchingUser->isEmailConfirmed() ) ) {
 211                                                 # ... adjust remaining text and page edit time placeholders
 212                                                 # which needs to be personalized for each user
 213                                                 $this->composeAndSendPersonalisedMail( $watchingUser );
 214
 215                                         } # if the watching user has an email address in the preferences
 216                                 }
 217                         } # if anyone is watching
 218                 } # if $wgEnotifWatchlist = true
 219
 220                 if ( $wgShowUpdatedMarker || $wgEnotifWatchlist ) {
 221                         # mark the changed watch-listed page with a timestamp, so that the page is
 222                         # listed with an "updated since your last visit" icon in the watch list, ...
 223                         $dbw =& wfGetDB( DB_MASTER );
 224                         $success = $dbw->update( 'watchlist',
 225                                 array( /* SET */
 226                                         'wl_notificationtimestamp' => $timestamp
 227                                 ), array( /* WHERE */
 228                                         'wl_title' => $title->getDBkey(),
 229                                         'wl_namespace' => $title->getNamespace(),
 230                                 ), 'UserMailer::NotifyOnChange'
 231                         );
 232                 }
 233
 234         } # function NotifyOnChange
 235
 236         /**
 237          * @access private
 238          */
 239         function composeCommonMailtext() {
 240                 global $wgLang, $wgUser, $wgEmergencyContact;
 241                 global $wgEnotifRevealEditorAddress;
 242                 global $wgEnotifFromEditor;
 243                 global $wgNoReplyAddress;
 244
 245                 $summary = ($this->summary == '') ? ' - ' : $this->summary;
 246                 $medit   = ($this->minorEdit) ? wfMsg( 'minoredit' ) : '';
 247
 248                 # You as the WikiAdmin and Sysops can make use of plenty of
 249                 # named variables when composing your notification emails while
 250                 # simply editing the Meta pages
 251
 252                 $subject = wfMsgForContent( 'enotif_subject' );
 253                 $body    = wfMsgForContent( 'enotif_body' );
 254                 $from    = ''; /* fail safe */
 255                 $replyto = ''; /* fail safe */
 256                 $keys    = array();
 257
 258                 # regarding the use of oldid as an indicator for the last visited version, see also
 259                 # http://bugzilla.wikipeda.org/show_bug.cgi?id=603 "Delete + undelete cycle doesn't preserve old_id"
 260                 # However, in the case of a new page which is already watched, we have no previous version to compare
 261                 if( $this->oldid ) {
 262                         $difflink = $this->title->getFullUrl( 'diff=0&oldid=' . $this->oldid );
 263                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_lastvisited', $difflink );
 264                         $keys['$OLDID']   = $this->oldid;
 265                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'changed' );
 266                 } else {
 267                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_newpagetext' );
 268                         # clear $OLDID placeholder in the message template
 269                         $keys['$OLDID']   = '';
 270                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'created' );
 271                 }
 272
 273                 $body = strtr( $body, $keys );
 274                 $pagetitle = $this->title->getPrefixedText();
 275
 276                 $keys['$PAGETITLE']          = $pagetitle;
 277                 $keys['$PAGETITLE_URL']      = $this->title->getFullUrl();
 278
 279                 $keys['$PAGETIMESTAMP']      = $article->mTimestamp;    # this is the raw internal timestamp - can be useful, too
 280                 $keys['$PAGEMINOREDIT']      = $medit;
 281                 $keys['$PAGESUMMARY']        = $summary;
 282
 283                 $subject = strtr( $subject, $keys );
 284
 285                 # Reveal the page editor's address as REPLY-TO address only if
 286                 # the user has not opted-out and the option is enabled at the
 287                 # global configuration level.
 288                 $name    = $wgUser->getName();
 289                 $adminAddress = 'WikiAdmin <' . $wgEmergencyContact . '>';
 290                 $editorAddress = wfRFC822Phrase( $name ) . ' <' . $wgUser->getEmail() . '>';
 291                 if( $wgEnotifRevealEditorAddress
 292                     && ( $wgUser->getEmail() != '' )
 293                     && $wgUser->getOption( 'enotifrevealaddr' ) ) {
 294                         if( $wgEnotifFromEditor ) {
 295                                 $from    = $editorAddress;
 296                         } else {
 297                                 $from    = $adminAddress;
 298                                 $replyto = $editorAddress;
 299                         }
 300                 } else {
 301                         $from    = $adminAddress;
 302                         $replyto = $wgNoReplyAddress;
 303                 }
 304
 305                 if( $wgUser->isIP( $name ) ) {
 306                         #real anon (user:xxx.xxx.xxx.xxx)
 307                         $anon    = $name . ' (anonymous user)';
 308                         $anonUrl = wfUrlencode( $name ) . ' (anonymous user)';
 309                         $subject = str_replace('$PAGEEDITOR', 'anonymous user '. $name, $subject);
 310
 311                         $keys['$PAGEEDITOR']       = 'anonymous user ' . $name;
 312                         $keys['$PAGEEDITOR_EMAIL'] = wfMsgForContent( 'noemailtitle' );
 313                 } else {
 314                         $subject = str_replace('$PAGEEDITOR', $name, $subject);
 315                         $keys['$PAGEEDITOR']          = $name;
 316                         $emailPage = Title::makeTitle( NS_SPECIAL, 'Emailuser/' . $name );
 317                         $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getFullUrl();
 318                 }
 319                 $userPage = $wgUser->getUserPage();
 320                 $keys['$PAGEEDITOR_WIKI'] = $userPage->getFullUrl();
 321                 $body = strtr( $body, $keys );
 322
 323                 $body = wordwrap( $body, 72 );
 324
 325                 # now save this as the constant user-independent part of the message
 326                 $this->from    = $from;
 327                 $this->replyto = $replyto;
 328                 $this->subject = $subject;
 329                 $this->body    = $body;
 330         }
 331
 332
 333
 334         /**
 335          * Does the per-user customizations to a notification e-mail (name,
 336          * timestamp in proper timezone, etc) and sends it out.
 337          * Returns true if the mail was sent successfully.
 338          *
 339          * @param User $watchingUser
 340          * @param object $mail
 341          * @return bool
 342          * @access private
 343          */
 344         function composeAndSendPersonalisedMail( $watchingUser ) {
 345                 global $wgLang;
 346                 // From the PHP manual:
 347                 //     Note:  The to parameter cannot be an address in the form of "Something <someone@example.com>".
 348                 //     The mail command will not parse this properly while talking with the MTA.
 349                 $to = $watchingUser->getEmail();
 350                 $body = str_replace( '$WATCHINGUSERNAME', $watchingUser->getName() , $this->body );
 351
 352                 $timecorrection = $watchingUser->getOption( 'timecorrection' );
 353                 if( !$timecorrection ) {
 354                         # fail safe - I prefer it. TomGries
 355                         $timecorrection = '00:00';
 356                 }
 357                 # $PAGEEDITDATE is the time and date of the page change
 358                 # expressed in terms of individual local time of the notification
 359                 # recipient, i.e. watching user
 360                 $body = str_replace('$PAGEEDITDATE',
 361                         $wgLang->timeanddate( $this->timestamp, true, false, $timecorrection ),
 362                         $body);
 363
 364                 $error = userMailer( $to, $this->from, $this->subject, $body, $this->replyto );
 365                 return ($error == '');
 366         }
 367
 368 } # end of class EmailNotification
 369 ?>