<?php
/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * LoggerAppenderMailEvent appends individual log events via email.
 *
 * This appender is similar to LoggerAppenderMail, except that it sends each
 * each log event in an individual email message at the time when it occurs.
 *
 * This appender uses a layout.
 *
 * ## Configurable parameters: ##
 *
 * - **to** - Email address(es) to which the log will be sent. Multiple email
 *     addresses may be specified by separating them with a comma.
 * - **from** - Email address which will be used in the From field.
 * - **subject** - Subject of the email message.
 * - **smtpHost** - Used to override the SMTP server. Only works on Windows.
 * - **port** - Used to override the default SMTP server port. Only works on
 *     Windows.
 *
 * @version $Revision: 1343601 $
 * @package log4php
 * @subpackage appenders
 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 * @link http://logging.apache.org/log4php/docs/appenders/mail-event.html Appender documentation
 */
class LoggerAppenderMailEvent extends LoggerAppender {

    /**
     * Email address to put in From field of the email.
     * @var string
     */
    protected $from;

    /**
     * Mail server port (widnows only).
     * @var integer
     */
    protected $port = 25;

    /**
     * Mail server hostname (windows only).
     * @var string
     */
    protected $smtpHost;

    /**
     * The subject of the email.
     * @var string
     */
    protected $subject = 'Log4php Report';

    /**
     * One or more comma separated email addresses to which to send the email.
     * @var string
     */
    protected $to = null;

    /**
     * Indiciates whether this appender should run in dry mode.
     * @deprecated
     * @var boolean
     */
    protected $dry = false;

    public function activateOptions() {
        if (empty($this->to)) {
            $this->warn("Required parameter 'to' not set. Closing appender.");
            $this->close = true;
            return;
        }

        $sendmail_from = ini_get('sendmail_from');
        if (empty($this->from) and empty($sendmail_from)) {
            $this->warn("Required parameter 'from' not set. Closing appender.");
            $this->close = true;
            return;
        }

        $this->closed = false;
    }

    public function append(LoggerLoggingEvent $event) {
        $smtpHost = $this->smtpHost;
        $prevSmtpHost = ini_get('SMTP');
        if (!empty($smtpHost)) {
            ini_set('SMTP', $smtpHost);
        }

        $smtpPort = $this->port;
        $prevSmtpPort = ini_get('smtp_port');
        if ($smtpPort > 0 and $smtpPort < 65535) {
            ini_set('smtp_port', $smtpPort);
        }

        // On unix only sendmail_path, which is PHP_INI_SYSTEM i.e. not changeable here, is used.

        $addHeader = empty($this->from) ? '' : "From: {$this->from}\r\n";

        if (!$this->dry) {
            $result = mail($this->to, $this->subject, $this->layout->getHeader() . $this->layout->format($event) . $this->layout->getFooter($event), $addHeader);
        } else {
            echo "DRY MODE OF MAIL APP.: Send mail to: " . $this->to . " with additional headers '" . trim($addHeader) . "' and content: " . $this->layout->format($event);
        }

        ini_set('SMTP', $prevSmtpHost);
        ini_set('smtp_port', $prevSmtpPort);
    }

    /** Sets the 'from' parameter. */
    public function setFrom($from) {
        $this->setString('from', $from);
    }

    /** Returns the 'from' parameter. */
    public function getFrom() {
        return $this->from;
    }

    /** Sets the 'port' parameter. */
    public function setPort($port) {
        $this->setPositiveInteger('port', $port);
    }

    /** Returns the 'port' parameter. */
    public function getPort() {
        return $this->port;
    }

    /** Sets the 'smtpHost' parameter. */
    public function setSmtpHost($smtpHost) {
        $this->setString('smtpHost', $smtpHost);
    }

    /** Returns the 'smtpHost' parameter. */
    public function getSmtpHost() {
        return $this->smtpHost;
    }

    /** Sets the 'subject' parameter. */
    public function setSubject($subject) {
        $this->setString('subject', $subject);
    }

    /** Returns the 'subject' parameter. */
    public function getSubject() {
        return $this->subject;
    }

    /** Sets the 'to' parameter. */
    public function setTo($to) {
        $this->setString('to', $to);
    }

    /** Returns the 'to' parameter. */
    public function getTo() {
        return $this->to;
    }

    /** Enables or disables dry mode. */
    public function setDry($dry) {
        $this->setBoolean('dry', $dry);
    }
}