示例#1
0
/**
 * return the jump url for a given remote user
 * this is used for rewriting forum post links in emails, etc
 *
 * @param stdclass $user the user to get the idp url for
 */
function mnet_get_idp_jump_url($user)
{
    global $CFG;
    static $mnetjumps = array();
    if (!array_key_exists($user->mnethostid, $mnetjumps)) {
        $idp = mnet_get_peer_host($user->mnethostid);
        $idpjumppath = mnet_get_app_jumppath($idp->applicationid);
        $mnetjumps[$user->mnethostid] = $idp->wwwroot . $idpjumppath . '?hostwwwroot=' . $CFG->wwwroot . '&wantsurl=';
    }
    return $mnetjumps[$user->mnethostid];
}
示例#2
0
/**
 * Send an email to a specified user
 *
 * @uses $CFG
 * @uses $FULLME
 * @uses $MNETIDPJUMPURL IdentityProvider(IDP) URL user hits to jump to mnet peer.
 * @uses SITEID
 * @param user $user  A {@link $USER} object
 * @param user $from A {@link $USER} object
 * @param string $subject plain text subject line of the email
 * @param string $messagetext plain text version of the message
 * @param string $messagehtml complete html version of the message (optional)
 * @param string $attachment a file on the filesystem, relative to $CFG->dataroot
 * @param string $attachname the name of the file (extension indicates MIME)
 * @param bool $usetrueaddress determines whether $from email address should
 *          be sent out. Will be overruled by user profile setting for maildisplay
 * @param int $wordwrapwidth custom word wrap width
 * @return bool|string Returns "true" if mail was sent OK, "emailstop" if email
 *          was blocked by user and "false" if there was another sort of error.
 */
function email_to_user($user, $from, $subject, $messagetext, $messagehtml = '', $attachment = '', $attachname = '', $usetrueaddress = true, $replyto = '', $replytoname = '', $wordwrapwidth = 79)
{
    global $CFG, $FULLME, $MNETIDPJUMPURL;
    static $mnetjumps = array();
    if (empty($user) || empty($user->email)) {
        return false;
    }
    if (!empty($user->deleted)) {
        // do not mail delted users
        return false;
    }
    if (!empty($CFG->noemailever)) {
        // hidden setting for development sites, set in config.php if needed
        return true;
    }
    // skip mail to suspended users
    if (isset($user->auth) && $user->auth == 'nologin') {
        return true;
    }
    if (!empty($user->emailstop)) {
        return 'emailstop';
    }
    if (over_bounce_threshold($user)) {
        error_log("User {$user->id} (" . fullname($user) . ") is over bounce threshold! Not sending.");
        return false;
    }
    // If the user is a remote mnet user, parse the email text for URL to the
    // wwwroot and modify the url to direct the user's browser to login at their
    // home site (identity provider - idp) before hitting the link itself
    if (is_mnet_remote_user($user)) {
        require_once $CFG->dirroot . '/mnet/lib.php';
        // Form the request url to hit the idp's jump.php
        if (isset($mnetjumps[$user->mnethostid])) {
            $MNETIDPJUMPURL = $mnetjumps[$user->mnethostid];
        } else {
            $idp = mnet_get_peer_host($user->mnethostid);
            $idpjumppath = '/auth/mnet/jump.php';
            $MNETIDPJUMPURL = $idp->wwwroot . $idpjumppath . '?hostwwwroot=' . $CFG->wwwroot . '&wantsurl=';
            $mnetjumps[$user->mnethostid] = $MNETIDPJUMPURL;
        }
        $messagetext = preg_replace_callback("%({$CFG->wwwroot}[^[:space:]]*)%", 'mnet_sso_apply_indirection', $messagetext);
        $messagehtml = preg_replace_callback("%href=[\"'`]({$CFG->wwwroot}[\\w_:\\?=#&@/;.~-]*)[\"'`]%", 'mnet_sso_apply_indirection', $messagehtml);
    }
    $mail =& get_mailer();
    if (!empty($mail->SMTPDebug)) {
        echo '<pre>' . "\n";
    }
    /// We are going to use textlib services here
    $textlib = textlib_get_instance();
    $supportuser = generate_email_supportuser();
    // make up an email address for handling bounces
    if (!empty($CFG->handlebounces)) {
        $modargs = 'B' . base64_encode(pack('V', $user->id)) . substr(md5($user->email), 0, 16);
        $mail->Sender = generate_email_processing_address(0, $modargs);
    } else {
        $mail->Sender = $supportuser->email;
    }
    if (is_string($from)) {
        // So we can pass whatever we want if there is need
        $mail->From = $CFG->noreplyaddress;
        $mail->FromName = $from;
    } else {
        if ($usetrueaddress and $from->maildisplay) {
            $mail->From = stripslashes($from->email);
            $mail->FromName = fullname($from);
        } else {
            $mail->From = $CFG->noreplyaddress;
            $mail->FromName = fullname($from);
            if (empty($replyto)) {
                $mail->AddReplyTo($CFG->noreplyaddress, get_string('noreplyname'));
            }
        }
    }
    if (!empty($replyto)) {
        $mail->AddReplyTo($replyto, $replytoname);
    }
    $mail->Subject = substr(stripslashes($subject), 0, 900);
    $mail->AddAddress(stripslashes($user->email), fullname($user));
    $mail->WordWrap = $wordwrapwidth;
    // set word wrap
    if (!empty($from->customheaders)) {
        // Add custom headers
        if (is_array($from->customheaders)) {
            foreach ($from->customheaders as $customheader) {
                $mail->AddCustomHeader($customheader);
            }
        } else {
            $mail->AddCustomHeader($from->customheaders);
        }
    }
    if (!empty($from->priority)) {
        $mail->Priority = $from->priority;
    }
    if ($messagehtml && $user->mailformat == 1) {
        // Don't ever send HTML to users who don't want it
        $mail->IsHTML(true);
        $mail->Encoding = 'quoted-printable';
        // Encoding to use
        $mail->Body = $messagehtml;
        $mail->AltBody = "\n{$messagetext}\n";
    } else {
        $mail->IsHTML(false);
        $mail->Body = "\n{$messagetext}\n";
    }
    if ($attachment && $attachname) {
        if (ereg("\\.\\.", $attachment)) {
            // Security check for ".." in dir path
            $mail->AddAddress($supportuser->email, fullname($supportuser, true));
            $mail->AddStringAttachment('Error in attachment.  User attempted to attach a filename with a unsafe name.', 'error.txt', '8bit', 'text/plain');
        } else {
            require_once $CFG->libdir . '/filelib.php';
            $mimetype = mimeinfo('type', $attachname);
            $mail->AddAttachment($CFG->dataroot . '/' . $attachment, $attachname, 'base64', $mimetype);
        }
    }
    /// If we are running under Unicode and sitemailcharset or allowusermailcharset are set, convert the email
    /// encoding to the specified one
    if (!empty($CFG->sitemailcharset) || !empty($CFG->allowusermailcharset)) {
        /// Set it to site mail charset
        $charset = $CFG->sitemailcharset;
        /// Overwrite it with the user mail charset
        if (!empty($CFG->allowusermailcharset)) {
            if ($useremailcharset = get_user_preferences('mailcharset', '0', $user->id)) {
                $charset = $useremailcharset;
            }
        }
        /// If it has changed, convert all the necessary strings
        $charsets = get_list_of_charsets();
        unset($charsets['UTF-8']);
        if (in_array($charset, $charsets)) {
            /// Save the new mail charset
            $mail->CharSet = $charset;
            /// And convert some strings
            $mail->FromName = $textlib->convert($mail->FromName, 'utf-8', $mail->CharSet);
            //From Name
            foreach ($mail->ReplyTo as $key => $rt) {
                //ReplyTo Names
                $mail->ReplyTo[$key][1] = $textlib->convert($rt[1], 'utf-8', $mail->CharSet);
            }
            $mail->Subject = $textlib->convert($mail->Subject, 'utf-8', $mail->CharSet);
            //Subject
            foreach ($mail->to as $key => $to) {
                $mail->to[$key][1] = $textlib->convert($to[1], 'utf-8', $mail->CharSet);
                //To Names
            }
            $mail->Body = $textlib->convert($mail->Body, 'utf-8', $mail->CharSet);
            //Body
            $mail->AltBody = $textlib->convert($mail->AltBody, 'utf-8', $mail->CharSet);
            //Subject
        }
    }
    if ($mail->Send()) {
        set_send_count($user);
        $mail->IsSMTP();
        // use SMTP directly
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return true;
    } else {
        mtrace('ERROR: ' . $mail->ErrorInfo);
        add_to_log(SITEID, 'library', 'mailer', $FULLME, 'ERROR: ' . $mail->ErrorInfo);
        if (!empty($mail->SMTPDebug)) {
            echo '</pre>';
        }
        return false;
    }
}