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+<?php
+/**
+ * UserMailer.php
+ * Copyright (C) 2004 Thomas Gries <mail@tgries.de>
+ * http://www.mediawiki.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @author <brion@pobox.com>
+ * @author <mail@tgries.de>
+ *
+ * @package MediaWiki
+ */
+
+/**
+ * Converts a string into a valid RFC 822 "phrase", such as is used for the sender name
+ */
+function wfRFC822Phrase( $phrase ) {
+ $phrase = strtr( $phrase, array( "\r" => '', "\n" => '', '"' => '' ) );
+ return '"' . $phrase . '"';
+}
+
+class MailAddress {
+ /**
+ * @param mixed $address String with an email address, or a User object
+ * @param string $name Human-readable name if a string address is given
+ */
+ function MailAddress( $address, $name=null ) {
+ if( is_object( $address ) && is_a( $address, 'User' ) ) {
+ $this->address = $address->getEmail();
+ $this->name = $address->getName();
+ } else {
+ $this->address = strval( $address );
+ $this->name = strval( $name );
+ }
+ }
+
+ /**
+ * Return formatted and quoted address to insert into SMTP headers
+ * @return string
+ */
+ function toString() {
+ if( $this->name != '' ) {
+ $quoted = wfQuotedPrintable( $this->name );
+ if( strpos( $quoted, '.' ) !== false ) {
+ $quoted = '"' . $quoted . '"';
+ }
+ return "$quoted <{$this->address}>";
+ } else {
+ return $this->address;
+ }
+ }
+}
+
+/**
+ * This function will perform a direct (authenticated) login to
+ * a SMTP Server to use for mail relaying if 'wgSMTP' specifies an
+ * array of parameters. It requires PEAR:Mail to do that.
+ * Otherwise it just uses the standard PHP 'mail' function.
+ *
+ * @param $to MailAddress: recipient's email
+ * @param $from MailAddress: sender's email
+ * @param $subject String: email's subject.
+ * @param $body String: email's text.
+ * @param $replyto String: optional reply-to email (default: false).
+ */
+function userMailer( $to, $from, $subject, $body, $replyto=false ) {
+ global $wgUser, $wgSMTP, $wgOutputEncoding, $wgErrorString;
+
+ if (is_array( $wgSMTP )) {
+ require_once( 'Mail.php' );
+
+ $timestamp = time();
+ $dest = $to->address;
+
+ $headers['From'] = $from->toString();
+ $headers['To'] = $to->toString();
+ if ( $replyto ) {
+ $headers['Reply-To'] = $replyto;
+ }
+ $headers['Subject'] = wfQuotedPrintable( $subject );
+ $headers['Date'] = date( 'r' );
+ $headers['MIME-Version'] = '1.0';
+ $headers['Content-type'] = 'text/plain; charset='.$wgOutputEncoding;
+ $headers['Content-transfer-encoding'] = '8bit';
+ $headers['Message-ID'] = "<{$timestamp}" . $wgUser->getName() . '@' . $wgSMTP['IDHost'] . '>'; // FIXME
+ $headers['X-Mailer'] = 'MediaWiki mailer';
+
+ // Create the mail object using the Mail::factory method
+ $mail_object =& Mail::factory('smtp', $wgSMTP);
+ wfDebug( "Sending mail via PEAR::Mail to $dest\n" );
+ $mailResult =& $mail_object->send($dest, $headers, $body);
+
+ # Based on the result return an error string,
+ if ($mailResult === true) {
+ return '';
+ } elseif (is_object($mailResult)) {
+ wfDebug( "PEAR::Mail failed: " . $mailResult->getMessage() . "\n" );
+ return $mailResult->getMessage();
+ } else {
+ wfDebug( "PEAR::Mail failed, unknown error result\n" );
+ return 'Mail object return unknown error.';
+ }
+ } else {
+ # In the following $headers = expression we removed "Reply-To: {$from}\r\n" , because it is treated differently
+ # (fifth parameter of the PHP mail function, see some lines below)
+ $headers =
+ "MIME-Version: 1.0\n" .
+ "Content-type: text/plain; charset={$wgOutputEncoding}\n" .
+ "Content-Transfer-Encoding: 8bit\n" .
+ "X-Mailer: MediaWiki mailer\n".
+ 'From: ' . $from->toString() . "\n";
+ if ($replyto) {
+ $headers .= "Reply-To: $replyto\n";
+ }
+
+ $dest = $to->toString();
+
+ $wgErrorString = '';
+ set_error_handler( 'mailErrorHandler' );
+ wfDebug( "Sending mail via internal mail() function to $dest\n" );
+ mail( $dest, wfQuotedPrintable( $subject ), $body, $headers );
+ restore_error_handler();
+
+ if ( $wgErrorString ) {
+ wfDebug( "Error sending mail: $wgErrorString\n" );
+ }
+ return $wgErrorString;
+ }
+}
+
+/**
+ * Get the mail error message in global $wgErrorString
+ *
+ * @param $code Integer: error number
+ * @param $string String: error message
+ */
+function mailErrorHandler( $code, $string ) {
+ global $wgErrorString;
+ $wgErrorString = preg_replace( "/^mail\(\): /", '', $string );
+}
+
+
+/**
+ * This module processes the email notifications when the current page is
+ * changed. It looks up the table watchlist to find out which users are watching
+ * that page.
+ *
+ * The current implementation sends independent emails to each watching user for
+ * the following reason:
+ *
+ * - Each watching user will be notified about the page edit time expressed in
+ * his/her local time (UTC is shown additionally). To achieve this, we need to
+ * find the individual timeoffset of each watching user from the preferences..
+ *
+ * Suggested improvement to slack down the number of sent emails: We could think
+ * of sending out bulk mails (bcc:user1,user2...) for all these users having the
+ * same timeoffset in their preferences.
+ *
+ * Visit the documentation pages under http://meta.wikipedia.com/Enotif
+ *
+ * @package MediaWiki
+ *
+ */
+class EmailNotification {
+ /**@{{
+ * @private
+ */
+ var $to, $subject, $body, $replyto, $from;
+ var $user, $title, $timestamp, $summary, $minorEdit, $oldid;
+
+ /**@}}*/
+
+ /**
+ * @todo document
+ * @param $title Title object
+ * @param $timestamp
+ * @param $summary
+ * @param $minorEdit
+ * @param $oldid (default: false)
+ */
+ function notifyOnPageChange(&$title, $timestamp, $summary, $minorEdit, $oldid=false) {
+
+ # we use $wgEmergencyContact as sender's address
+ global $wgUser, $wgEnotifWatchlist;
+ global $wgEnotifMinorEdits, $wgEnotifUserTalk, $wgShowUpdatedMarker;
+
+ $fname = 'UserMailer::notifyOnPageChange';
+ wfProfileIn( $fname );
+
+ # The following code is only run, if several conditions are met:
+ # 1. EmailNotification for pages (other than user_talk pages) must be enabled
+ # 2. minor edits (changes) are only regarded if the global flag indicates so
+
+ $isUserTalkPage = ($title->getNamespace() == NS_USER_TALK);
+ $enotifusertalkpage = ($isUserTalkPage && $wgEnotifUserTalk);
+ $enotifwatchlistpage = $wgEnotifWatchlist;
+
+ if ( (!$minorEdit || $wgEnotifMinorEdits) ) {
+ if( $wgEnotifWatchlist ) {
+ // Send updates to watchers other than the current editor
+ $userCondition = 'wl_user <> ' . intval( $wgUser->getId() );
+ } elseif( $wgEnotifUserTalk && $title->getNamespace() == NS_USER_TALK ) {
+ $targetUser = User::newFromName( $title->getText() );
+ if( is_null( $targetUser ) ) {
+ wfDebug( "$fname: user-talk-only mode; no such user\n" );
+ $userCondition = false;
+ } elseif( $targetUser->getId() == $wgUser->getId() ) {
+ wfDebug( "$fname: user-talk-only mode; editor is target user\n" );
+ $userCondition = false;
+ } else {
+ // Don't notify anyone other than the owner of the talk page
+ $userCondition = 'wl_user = ' . intval( $targetUser->getId() );
+ }
+ } else {
+ // Notifications disabled
+ $userCondition = false;
+ }
+ if( $userCondition ) {
+ $dbr =& wfGetDB( DB_MASTER );
+ extract( $dbr->tableNames( 'watchlist' ) );
+
+ $res = $dbr->select( 'watchlist', array( 'wl_user' ),
+ array(
+ 'wl_title' => $title->getDBkey(),
+ 'wl_namespace' => $title->getNamespace(),
+ $userCondition,
+ 'wl_notificationtimestamp IS NULL',
+ ), $fname );
+
+ # if anyone is watching ... set up the email message text which is
+ # common for all receipients ...
+ if ( $dbr->numRows( $res ) > 0 ) {
+ $this->title =& $title;
+ $this->timestamp = $timestamp;
+ $this->summary = $summary;
+ $this->minorEdit = $minorEdit;
+ $this->oldid = $oldid;
+
+ $this->composeCommonMailtext();
+ $watchingUser = new User();
+
+ # ... now do for all watching users ... if the options fit
+ for ($i = 1; $i <= $dbr->numRows( $res ); $i++) {
+
+ $wuser = $dbr->fetchObject( $res );
+ $watchingUser->setID($wuser->wl_user);
+ if ( ( $enotifwatchlistpage && $watchingUser->getOption('enotifwatchlistpages') ) ||
+ ( $enotifusertalkpage && $watchingUser->getOption('enotifusertalkpages') )
+ && (!$minorEdit || ($wgEnotifMinorEdits && $watchingUser->getOption('enotifminoredits') ) )
+ && ($watchingUser->isEmailConfirmed() ) ) {
+ # ... adjust remaining text and page edit time placeholders
+ # which needs to be personalized for each user
+ $this->composeAndSendPersonalisedMail( $watchingUser );
+
+ } # if the watching user has an email address in the preferences
+ }
+ }
+ } # if anyone is watching
+ } # if $wgEnotifWatchlist = true
+
+ if ( $wgShowUpdatedMarker || $wgEnotifWatchlist ) {
+ # mark the changed watch-listed page with a timestamp, so that the page is
+ # listed with an "updated since your last visit" icon in the watch list, ...
+ $dbw =& wfGetDB( DB_MASTER );
+ $success = $dbw->update( 'watchlist',
+ array( /* SET */
+ 'wl_notificationtimestamp' => $dbw->timestamp($timestamp)
+ ), array( /* WHERE */
+ 'wl_title' => $title->getDBkey(),
+ 'wl_namespace' => $title->getNamespace(),
+ ), 'UserMailer::NotifyOnChange'
+ );
+ # FIXME what do we do on failure ?
+ }
+
+ } # function NotifyOnChange
+
+ /**
+ * @private
+ */
+ function composeCommonMailtext() {
+ global $wgUser, $wgEmergencyContact, $wgNoReplyAddress;
+ global $wgEnotifFromEditor, $wgEnotifRevealEditorAddress;
+
+ $summary = ($this->summary == '') ? ' - ' : $this->summary;
+ $medit = ($this->minorEdit) ? wfMsg( 'minoredit' ) : '';
+
+ # You as the WikiAdmin and Sysops can make use of plenty of
+ # named variables when composing your notification emails while
+ # simply editing the Meta pages
+
+ $subject = wfMsgForContent( 'enotif_subject' );
+ $body = wfMsgForContent( 'enotif_body' );
+ $from = ''; /* fail safe */
+ $replyto = ''; /* fail safe */
+ $keys = array();
+
+ # regarding the use of oldid as an indicator for the last visited version, see also
+ # http://bugzilla.wikipeda.org/show_bug.cgi?id=603 "Delete + undelete cycle doesn't preserve old_id"
+ # However, in the case of a new page which is already watched, we have no previous version to compare
+ if( $this->oldid ) {
+ $difflink = $this->title->getFullUrl( 'diff=0&oldid=' . $this->oldid );
+ $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_lastvisited', $difflink );
+ $keys['$OLDID'] = $this->oldid;
+ $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'changed' );
+ } else {
+ $keys['$NEWPAGE'] = wfMsgForContent( 'enotif_newpagetext' );
+ # clear $OLDID placeholder in the message template
+ $keys['$OLDID'] = '';
+ $keys['$CHANGEDORCREATED'] = wfMsgForContent( 'created' );
+ }
+
+ $body = strtr( $body, $keys );
+ $pagetitle = $this->title->getPrefixedText();
+ $keys['$PAGETITLE'] = $pagetitle;
+ $keys['$PAGETITLE_URL'] = $this->title->getFullUrl();
+
+ $keys['$PAGEMINOREDIT'] = $medit;
+ $keys['$PAGESUMMARY'] = $summary;
+
+ $subject = strtr( $subject, $keys );
+
+ # Reveal the page editor's address as REPLY-TO address only if
+ # the user has not opted-out and the option is enabled at the
+ # global configuration level.
+ $name = $wgUser->getName();
+ $adminAddress = new MailAddress( $wgEmergencyContact, 'WikiAdmin' );
+ $editorAddress = new MailAddress( $wgUser );
+ if( $wgEnotifRevealEditorAddress
+ && ( $wgUser->getEmail() != '' )
+ && $wgUser->getOption( 'enotifrevealaddr' ) ) {
+ if( $wgEnotifFromEditor ) {
+ $from = $editorAddress;
+ } else {
+ $from = $adminAddress;
+ $replyto = $editorAddress;
+ }
+ } else {
+ $from = $adminAddress;
+ $replyto = $wgNoReplyAddress;
+ }
+
+ if( $wgUser->isIP( $name ) ) {
+ #real anon (user:xxx.xxx.xxx.xxx)
+ $subject = str_replace('$PAGEEDITOR', 'anonymous user '. $name, $subject);
+ $keys['$PAGEEDITOR'] = 'anonymous user ' . $name;
+ $keys['$PAGEEDITOR_EMAIL'] = wfMsgForContent( 'noemailtitle' );
+ } else {
+ $subject = str_replace('$PAGEEDITOR', $name, $subject);
+ $keys['$PAGEEDITOR'] = $name;
+ $emailPage = Title::makeTitle( NS_SPECIAL, 'Emailuser/' . $name );
+ $keys['$PAGEEDITOR_EMAIL'] = $emailPage->getFullUrl();
+ }
+ $userPage = $wgUser->getUserPage();
+ $keys['$PAGEEDITOR_WIKI'] = $userPage->getFullUrl();
+ $body = strtr( $body, $keys );
+ $body = wordwrap( $body, 72 );
+
+ # now save this as the constant user-independent part of the message
+ $this->from = $from;
+ $this->replyto = $replyto;
+ $this->subject = $subject;
+ $this->body = $body;
+ }
+
+
+
+ /**
+ * Does the per-user customizations to a notification e-mail (name,
+ * timestamp in proper timezone, etc) and sends it out.
+ * Returns true if the mail was sent successfully.
+ *
+ * @param User $watchingUser
+ * @param object $mail
+ * @return bool
+ * @private
+ */
+ function composeAndSendPersonalisedMail( $watchingUser ) {
+ global $wgLang;
+ // From the PHP manual:
+ // Note: The to parameter cannot be an address in the form of "Something <someone@example.com>".
+ // The mail command will not parse this properly while talking with the MTA.
+ $to = new MailAddress( $watchingUser );
+ $body = str_replace( '$WATCHINGUSERNAME', $watchingUser->getName() , $this->body );
+
+ $timecorrection = $watchingUser->getOption( 'timecorrection' );
+
+ # $PAGEEDITDATE is the time and date of the page change
+ # expressed in terms of individual local time of the notification
+ # recipient, i.e. watching user
+ $body = str_replace('$PAGEEDITDATE',
+ $wgLang->timeanddate( $this->timestamp, true, false, $timecorrection ),
+ $body);
+
+ $error = userMailer( $to, $this->from, $this->subject, $body, $this->replyto );
+ return ($error == '');
+ }
+
+} # end of class EmailNotification
+?>