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  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 class MailAddress {
  39         /**
  40          * @param mixed $address String with an email address, or a User object
  41          * @param string $name Human-readable name if a string address is given
  42          */
  43         function MailAddress( $address, $name=null ) {
  44                 if( is_object( $address ) && is_a( $address, 'User' ) ) {
  45                         $this->address = $address->getEmail();
  46                         $this->name = $address->getName();
  47                 } else {
  48                         $this->address = strval( $address );
  49                         $this->name = strval( $name );
  50                 }
  51         }
  52
  53         /**
  54          * Return formatted and quoted address to insert into SMTP headers
  55          * @return string
  56          */
  57         function toString() {
  58                 if( $this->name != '' ) {
  59                         return wfQuotedPrintable( $this->name ) . " <" . $this->address . ">";
  60                 } else {
  61                         return $this->address;
  62                 }
  63         }
  64 }
  65
  66 /**
  67  * This function will perform a direct (authenticated) login to
  68  * a SMTP Server to use for mail relaying if 'wgSMTP' specifies an
  69  * array of parameters. It requires PEAR:Mail to do that.
  70  * Otherwise it just uses the standard PHP 'mail' function.
  71  *
  72  * @param $to MailAddress: recipient's email
  73  * @param $from MailAddress: sender's email
  74  * @param $subject String: email's subject.
  75  * @param $body String: email's text.
  76  * @param $replyto String: optional reply-to email (default: false).
  77  */
  78 function userMailer( $to, $from, $subject, $body, $replyto=false ) {
  79         global $wgUser, $wgSMTP, $wgOutputEncoding, $wgErrorString;
  80
  81         if (is_array( $wgSMTP )) {
  82                 require_once( 'Mail.php' );
  83
  84                 $timestamp = time();
  85                 $dest = $to->toString();
  86
  87                 $headers['From'] = $from->toString();
  88                 $headers['To'] = $dest;
  89                 if ( $replyto ) {
  90                         $headers['Reply-To'] = $replyto;
  91                 }
  92                 $headers['Subject'] = wfQuotedPrintable( $subject );
  93                 $headers['Date'] = date( 'r' );
  94                 $headers['MIME-Version'] = '1.0';
  95                 $headers['Content-type'] = 'text/plain; charset='.$wgOutputEncoding;
  96                 $headers['Content-transfer-encoding'] = '8bit';
  97                 $headers['Message-ID'] = "<{$timestamp}" . $wgUser->getName() . '@' . $wgSMTP['IDHost'] . '>'; // FIXME
  98                 $headers['X-Mailer'] = 'MediaWiki mailer';
  99
 100                 // Create the mail object using the Mail::factory method
 101                 $mail_object =& Mail::factory('smtp', $wgSMTP);
 102                 wfDebug( "Sending mail via PEAR::Mail to $dest" );
 103                 $mailResult =& $mail_object->send($dest, $headers, $body);
 104
 105                 # Based on the result return an error string,
 106                 if ($mailResult === true) {
 107                         return '';
 108                 } elseif (is_object($mailResult)) {
 109                         wfDebug( "PEAR::Mail failed: " . $mailResult->getMessage() . "\n" );
 110                         return $mailResult->getMessage();
 111                 } else {
 112                         wfDebug( "PEAR::Mail failed, unknown error result\n" );
 113                         return 'Mail object return unknown error.';
 114                 }
 115         } else  {
 116                 # In the following $headers = expression we removed "Reply-To: {$from}\r\n" , because it is treated differently
 117                 # (fifth parameter of the PHP mail function, see some lines below)
 118                 $headers =
 119                         "MIME-Version: 1.0\n" .
 120                         "Content-type: text/plain; charset={$wgOutputEncoding}\n" .
 121                         "Content-Transfer-Encoding: 8bit\n" .
 122                         "X-Mailer: MediaWiki mailer\n".
 123                         'From: ' . $from->toString() . "\n";
 124                 if ($replyto) {
 125                         $headers .= "Reply-To: $replyto\n";
 126                 }
 127
 128                 $dest = $to->toString();
 129
 130                 $wgErrorString = '';
 131                 set_error_handler( 'mailErrorHandler' );
 132                 wfDebug( "Sending mail via internal mail() function to $dest\n" );
 133                 mail( $dest, wfQuotedPrintable( $subject ), $body, $headers );
 134                 restore_error_handler();
 135
 136                 if ( $wgErrorString ) {
 137                         wfDebug( "Error sending mail: $wgErrorString\n" );
 138                 }
 139                 return $wgErrorString;
 140         }
 141 }
 142
 143 /**
 144  * Get the mail error message in global $wgErrorString
 145  *
 146  * @param $code Integer: error number
 147  * @param $string String: error message
 148  */
 149 function mailErrorHandler( $code, $string ) {
 150         global $wgErrorString;
 151         $wgErrorString = preg_replace( "/^mail\(\): /", '', $string );
 152 }
 153
 154
 155 /**
 156  * This module processes the email notifications when the current page is
 157  * changed. It looks up the table watchlist to find out which users are watching
 158  * that page.
 159  *
 160  * The current implementation sends independent emails to each watching user for
 161  * the following reason:
 162  *
 163  * - Each watching user will be notified about the page edit time expressed in
 164  * his/her local time (UTC is shown additionally). To achieve this, we need to
 165  * find the individual timeoffset of each watching user from the preferences..
 166  *
 167  * Suggested improvement to slack down the number of sent emails: We could think
 168  * of sending out bulk mails (bcc:user1,user2...) for all these users having the
 169  * same timeoffset in their preferences.
 170  *
 171  * Visit the documentation pages under http://meta.wikipedia.com/Enotif
 172  *
 173  * @package MediaWiki
 174  *
 175  */
 176 class EmailNotification {
 177         /**@{{
 178          * @private
 179          */
 180         var $to, $subject, $body, $replyto, $from;
 181         var $user, $title, $timestamp, $summary, $minorEdit, $oldid;
 182
 183         /**@}}*/
 184
 185         /**
 186          * @todo document
 187          * @param $title Title object
 188          * @param $timestamp
 189          * @param $summary
 190          * @param $minorEdit
 191          * @param $oldid (default: false)
 192          */
 193         function notifyOnPageChange(&$title, $timestamp, $summary, $minorEdit, $oldid=false) {
 194
 195                 # we use $wgEmergencyContact as sender's address
 196                 global $wgUser, $wgEnotifWatchlist;
 197                 global $wgEnotifMinorEdits, $wgEnotifUserTalk, $wgShowUpdatedMarker;
 198
 199                 $fname = 'UserMailer::notifyOnPageChange';
 200                 wfProfileIn( $fname );
 201
 202                 # The following code is only run, if several conditions are met:
 203                 # 1. EmailNotification for pages (other than user_talk pages) must be enabled
 204                 # 2. minor edits (changes) are only regarded if the global flag indicates so
 205
 206                 $isUserTalkPage = ($title->getNamespace() == NS_USER_TALK);
 207                 $enotifusertalkpage = ($isUserTalkPage && $wgEnotifUserTalk);
 208                 $enotifwatchlistpage = $wgEnotifWatchlist;
 209
 210                 if ( (!$minorEdit || $wgEnotifMinorEdits) ) {
 211                         if( $wgEnotifWatchlist ) {
 212                                 // Send updates to watchers other than the current editor
 213                                 $userCondition = 'wl_user <> ' . intval( $wgUser->getId() );
 214                         } elseif( $wgEnotifUserTalk && $title->getNamespace() == NS_USER_TALK ) {
 215                                 $targetUser = User::newFromName( $title->getText() );
 216                                 if( is_null( $targetUser ) ) {
 217                                         wfDebug( "$fname: user-talk-only mode; no such user\n" );
 218                                         $userCondition = false;
 219                                 } elseif( $targetUser->getId() == $wgUser->getId() ) {
 220                                         wfDebug( "$fname: user-talk-only mode; editor is target user\n" );
 221                                         $userCondition = false;
 222                                 } else {
 223                                         // Don't notify anyone other than the owner of the talk page
 224                                         $userCondition = 'wl_user = ' . intval( $targetUser->getId() );
 225                                 }
 226                         } else {
 227                                 // Notifications disabled
 228                                 $userCondition = false;
 229                         }
 230                         if( $userCondition ) {
 231                                 $dbr =& wfGetDB( DB_MASTER );
 232                                 extract( $dbr->tableNames( 'watchlist' ) );
 233
 234                                 $res = $dbr->select( 'watchlist', array( 'wl_user' ),
 235                                         array(
 236                                                 'wl_title' => $title->getDBkey(),
 237                                                 'wl_namespace' => $title->getNamespace(),
 238                                                 $userCondition,
 239                                                 'wl_notificationtimestamp IS NULL',
 240                                         ), $fname );
 241
 242                                 # if anyone is watching ... set up the email message text which is
 243                                 # common for all receipients ...
 244                                 if ( $dbr->numRows( $res ) > 0 ) {
 245                                         $this->title =& $title;
 246                                         $this->timestamp = $timestamp;
 247                                         $this->summary = $summary;
 248                                         $this->minorEdit = $minorEdit;
 249                                         $this->oldid = $oldid;
 250
 251                                         $this->composeCommonMailtext();
 252                                         $watchingUser = new User();
 253
 254                                         # ... now do for all watching users ... if the options fit
 255                                         for ($i = 1; $i <= $dbr->numRows( $res ); $i++) {
 256
 257                                                 $wuser = $dbr->fetchObject( $res );
 258                                                 $watchingUser->setID($wuser->wl_user);
 259                                                 if ( ( $enotifwatchlistpage && $watchingUser->getOption('enotifwatchlistpages') ) ||
 260                                                         ( $enotifusertalkpage && $watchingUser->getOption('enotifusertalkpages') )
 261                                                 && (!$minorEdit || ($wgEnotifMinorEdits && $watchingUser->getOption('enotifminoredits') ) )
 262                                                 && ($watchingUser->isEmailConfirmed() ) ) {
 263                                                         # ... adjust remaining text and page edit time placeholders
 264                                                         # which needs to be personalized for each user
 265                                                         $this->composeAndSendPersonalisedMail( $watchingUser );
 266
 267                                                 } # if the watching user has an email address in the preferences
 268                                         }
 269                                 }
 270                         } # if anyone is watching
 271                 } # if $wgEnotifWatchlist = true
 272
 273                 if ( $wgShowUpdatedMarker || $wgEnotifWatchlist ) {
 274                         # mark the changed watch-listed page with a timestamp, so that the page is
 275                         # listed with an "updated since your last visit" icon in the watch list, ...
 276                         $dbw =& wfGetDB( DB_MASTER );
 277                         $success = $dbw->update( 'watchlist',
 278                                 array( /* SET */
 279                                         'wl_notificationtimestamp' => $dbw->timestamp($timestamp)
 280                                 ), array( /* WHERE */
 281                                         'wl_title' => $title->getDBkey(),
 282                                         'wl_namespace' => $title->getNamespace(),
 283                                 ), 'UserMailer::NotifyOnChange'
 284                         );
 285                         # FIXME what do we do on failure ?
 286                 }
 287
 288         } # function NotifyOnChange
 289
 290         /**
 291          * @private
 292          */
 293         function composeCommonMailtext() {
 294                 global $wgUser, $wgEmergencyContact, $wgNoReplyAddress;
 295                 global $wgEnotifFromEditor, $wgEnotifRevealEditorAddress;
 296
 297                 $summary = ($this->summary == '') ? ' - ' : $this->summary;
 298                 $medit   = ($this->minorEdit) ? wfMsg( 'minoredit' ) : '';
 299
 300                 # You as the WikiAdmin and Sysops can make use of plenty of
 301                 # named variables when composing your notification emails while
 302                 # simply editing the Meta pages
 303
 304                 $subject = wfMsgForContent( 'enotif_subject' );
 305                 $body    = wfMsgForContent( 'enotif_body' );
 306                 $from    = ''; /* fail safe */
 307                 $replyto = ''; /* fail safe */
 308                 $keys    = array();
 309
 310                 # regarding the use of oldid as an indicator for the last visited version, see also
 311                 # http://bugzilla.wikipeda.org/show_bug.cgi?id=603 "Delete + undelete cycle doesn't preserve old_id"
 312                 # However, in the case of a new page which is already watched, we have no previous version to compare
 313                 if( $this->oldid ) {
 314                         $difflink = $this->title->getFullUrl( 'diff=0&oldid=' . $this->oldid );
 315                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_lastvisited', $difflink );
 316                         $keys['$OLDID']   = $this->oldid;
 317                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'changed' );
 318                 } else {
 319                         $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_newpagetext' );
 320                         # clear $OLDID placeholder in the message template
 321                         $keys['$OLDID']   = '';
 322                         $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'created' );
 323                 }
 324
 325                 $body = strtr( $body, $keys );
 326                 $pagetitle = $this->title->getPrefixedText();
 327                 $keys['$PAGETITLE']          = $pagetitle;
 328                 $keys['$PAGETITLE_URL']      = $this->title->getFullUrl();
 329
 330                 $keys['$PAGEMINOREDIT']      = $medit;
 331                 $keys['$PAGESUMMARY']        = $summary;
 332
 333                 $subject = strtr( $subject, $keys );
 334
 335                 # Reveal the page editor's address as REPLY-TO address only if
 336                 # the user has not opted-out and the option is enabled at the
 337                 # global configuration level.
 338                 $name    = $wgUser->getName();
 339                 $adminAddress = new MailAddress( $wgEmergencyContact, 'WikiAdmin' );
 340                 $editorAddress = new MailAddress( $wgUser );
 341                 if( $wgEnotifRevealEditorAddress
 342                     && ( $wgUser->getEmail() != '' )
 343                     && $wgUser->getOption( 'enotifrevealaddr' ) ) {
 344                         if( $wgEnotifFromEditor ) {
 345                                 $from    = $editorAddress;
 346                         } else {
 347                                 $from    = $adminAddress;
 348                                 $replyto = $editorAddress;
 349                         }
 350                 } else {
 351                         $from    = $adminAddress;
 352                         $replyto = $wgNoReplyAddress;
 353                 }
 354
 355                 if( $wgUser->isIP( $name ) ) {
 356                         #real anon (user:xxx.xxx.xxx.xxx)
 357                         $subject = str_replace('$PAGEEDITOR', 'anonymous user '. $name, $subject);
 358                         $keys['$PAGEEDITOR']       = 'anonymous user ' . $name;
 359                         $keys['$PAGEEDITOR_EMAIL'] = wfMsgForContent( 'noemailtitle' );
 360                 } else {
 361                         $subject = str_replace('$PAGEEDITOR', $name, $subject);
 362                         $keys['$PAGEEDITOR']          = $name;
 363                         $emailPage = Title::makeTitle( NS_SPECIAL, 'Emailuser/' . $name );
 364                         $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getFullUrl();
 365                 }
 366                 $userPage = $wgUser->getUserPage();
 367                 $keys['$PAGEEDITOR_WIKI'] = $userPage->getFullUrl();
 368                 $body = strtr( $body, $keys );
 369                 $body = wordwrap( $body, 72 );
 370
 371                 # now save this as the constant user-independent part of the message
 372                 $this->from    = $from;
 373                 $this->replyto = $replyto;
 374                 $this->subject = $subject;
 375                 $this->body    = $body;
 376         }
 377
 378
 379
 380         /**
 381          * Does the per-user customizations to a notification e-mail (name,
 382          * timestamp in proper timezone, etc) and sends it out.
 383          * Returns true if the mail was sent successfully.
 384          *
 385          * @param User $watchingUser
 386          * @param object $mail
 387          * @return bool
 388          * @private
 389          */
 390         function composeAndSendPersonalisedMail( $watchingUser ) {
 391                 global $wgLang;
 392                 // From the PHP manual:
 393                 //     Note:  The to parameter cannot be an address in the form of "Something <someone@example.com>".
 394                 //     The mail command will not parse this properly while talking with the MTA.
 395                 $to = new MailAddress( $watchingUser );
 396                 $body = str_replace( '$WATCHINGUSERNAME', $watchingUser->getName() , $this->body );
 397
 398                 $timecorrection = $watchingUser->getOption( 'timecorrection' );
 399
 400                 # $PAGEEDITDATE is the time and date of the page change
 401                 # expressed in terms of individual local time of the notification
 402                 # recipient, i.e. watching user
 403                 $body = str_replace('$PAGEEDITDATE',
 404                         $wgLang->timeanddate( $this->timestamp, true, false, $timecorrection ),
 405                         $body);
 406
 407                 $error = userMailer( $to, $this->from, $this->subject, $body, $this->replyto );
 408                 return ($error == '');
 409         }
 410
 411 } # end of class EmailNotification
 412 ?>