<?php // -*- php -*-

// Copyright (C) 2012, Wolfgang Scherer, <Wolfgang.Scherer at gmx.de>

// Sponsored by WIEDENMANN SEILE GMBH, http://www.wiedenmannseile.de

//

// This file is part of Wiedenmann Vacation.

//

// 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 3 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, see <http://www.gnu.org/licenses/>,

// or write to Wolfgang Scherer, <Wolfgang.Scherer at gmx.de>

// $_REQUEST['_DEBUG_'] = 1;

// --------------------------------------------------

// |||:sec:||| Configuration

// --------------------------------------------------

require_once(dirname(__FILE__) . '/lib/util.php');

require_once(dirname(__FILE__) . '/lib/template.php');

// _DEBUG_ = 1 normal debugging

// _DEBUG_ = 2 turn off administrator rights

// _DEBUG_ = 3 provoke error #1

// _DEBUG_ = 4 provoke error #2

if (isset($_REQUEST['_DEBUG_'])) {

    $_debug = $_REQUEST['_DEBUG_'];

    if (empty($_debug)) {

        $_debug = 1;

    }

} else {

    $_debug = 0;

}

// --------------------------------------------------

// |||:sec:||| Setup

// --------------------------------------------------

if (isset($_SERVER["REMOTE_USER"])) {

    $remote_user = $_SERVER["REMOTE_USER"];

} else {

    $remote_user = '';

}

if (isset($_REQUEST["user"])) {

    $request_user = $_REQUEST["user"];

} else {

    $request_user = '';

}

$is_admin = in_array($remote_user, $ADMIN_USERS);

if ($_debug > 1) {

    $is_admin = False;

}

// $is_admin = False;              // |:debug:|

$users = get_users();

$user_names = array_keys($users);

if (!$is_admin) {

    $user = $remote_user;

} else {

    $user = $request_user;

    if (empty($user)) {

        $user = $remote_user;

    }

}

// --------------------------------------------------

// |||:sec:||| HTML Header

// --------------------------------------------------

$title = get_text('title');

$css = '

div.error {

    margin-bottom: 10px;

}

span.label {

    width: 100px;

    display: inline-block;

    vertical-align: top;

}

hr.sep {

    width: 550px;

    text-align: left;

    margin-left: 0;

}

#body, #copyright-notice {

    width: 550px;

    margin: 10px auto;

    position:relative;

}

#body {

    text-align: left;

}

#copyright-notice {

    text-align: center;

    font-size: 8pt;

}

h4._more, h4._less {

    cursor: pointer;

}

h4._more:after {

    content: "...";

    font-weight: bold;

    padding-left: 4px;

}

h4._less:before {

    content: "^";

    font-weight: bold;

    padding-right: 4px;

}

';

$headers = '<script class="jsbin" src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>';

$script ='

jQuery(document).ready(function(){

    $("#expert-mode").click(function(ev) {

        ev.preventDefault();

        var jthis = $(this);

        var contents = jthis.next();

        if (contents.is(":visible")) {

            jthis.addClass("_more");

            jthis.removeClass("_less");

            contents.hide();

        } else {

            jthis.removeClass("_more");

            jthis.addClass("_less");

            contents.show();

        }

        return false;

    }).click();

});

';

echo substitute_elements(

    $HEAD, Array(

        'title' => trim($title),

        'css' => trim($css),

        'headers' => trim($headers),

        'script' => trim($script),

        ));

hl($title);

// --------------------------------------------------

// |||:sec:||| Error handling (User)

// --------------------------------------------------

if ($_debug > 2) {

    $user = '';                 // error #1

}

if ($_debug > 3) {

    $user = 'unknown';          // error #2

}

if (empty($user)) {

    error_msg(get_text('error_no_user'));

    echo $FOOT;

    exit(0);

}

if (!$is_admin && !in_array($user, $user_names)) {

    error_msg(sprintf('%s (%s)!', get_text('error_unknown_user'), $user));

    echo $FOOT;

    exit(0);

}

// --------------------------------------------------

// |||:sec:||| Setup HOME/vacation(1)

// --------------------------------------------------

$home = $users[$user][1];

if ($_debug) {

    echo ('<pre>'."\n");            // |:debug:|

    echo ('user: ' . $user . "\n");

    echo ('home: ' . $home . "\n");

    echo ('</pre>'."\n");

}

$vacation_msg_file = sprintf('%s/%s', $home, $VACATION_MSG_FILE);

$vacation_db_file = sprintf('%s/%s', $home, $VACATION_DB_FILE);

$forward_file = sprintf('%s/%s', $home, $FORWARD_FILE);

$forward_active = test_readable($forward_file, $user);

$forward_settings = Array(

    '\\'.$user, '', sprintf($VACATION_FORWARD_ENTRY, $user));

if ($forward_active)

{

    $forward_settings = cat_file($forward_file, $user);

    $lines = explode("\n", $forward_settings);

    $forward_settings = preg_split('/, */', $lines[0]);

    if (count($forward_settings) < 3) {

        $forward_settings[2] = $forward_settings[1];

        $forward_settings[1] = '';

    }

}

$vacation_setup_raw = isset($_REQUEST["raw"]);

$vacation_clear = isset($_REQUEST['clear']);

if ($vacation_clear || !test_readable($vacation_msg_file, $user)) {

    // Reset to default

    $vacation_msg = get_text('vacation');

    $vacation_parts = vacation_split($vacation_msg, False);

    $vacation_subject = $vacation_parts[0];

    $vacation_body = $vacation_parts[2];

    $vacation_msg = vacation_join($vacation_subject, $vacation_body);

    $vacation_setup_raw = False;

} else {

    $vacation_msg = cat_file($vacation_msg_file, $user);

}

$message_parts = message_split($vacation_msg);

$message_headers = $message_parts[0];

$message_body = $message_parts[1];

$x_wsv_format = header_field_body($message_headers, 'x-wsv-format');

if ( $x_wsv_format == 'raw' ) {

    $x_wsv_raw = True;

} else {

    $x_wsv_raw = False;

}

if ( $x_wsv_raw )

{

    $vacation_headers = $message_headers;

    $vacation_body = $message_body;

    $vacation_subject = header_field_body($vacation_headers, 'subject');

} else {

    $vacation_parts = vacation_split($vacation_msg, True);

    $vacation_subject = $vacation_parts[0];

    $vacation_headers = $vacation_parts[1];

    $vacation_body = $vacation_parts[2];

}

$vacation_refresh = isset($_REQUEST['refresh']);

$vacation_forward_to = '';

if ( !$vacation_refresh && !$vacation_clear && isset($_REQUEST['forward']) ) {

    $vacation_forward_to =  $_REQUEST['forward'];

} else {

    $vacation_forward_to = $forward_settings[1];

    $vacation_forward_to = preg_replace('/^\\\\/', '', $vacation_forward_to);

    if (empty($vacation_forward_to)) {

        $vacation_forward_to = vacation_find_forward($vacation_headers);

    }

}

// --------------------------------------------------

// |||:sec:||| Set vacation(1) parameters

// --------------------------------------------------

$vacation_setup = isset($_REQUEST['save']);

if ( $vacation_setup ) {

    // |:check:| redundant?

    $vacation_setup_raw = False;

}

$vacation_del_log = isset($_REQUEST['delete']);

if ( $vacation_del_log ) {

    if ( !isset($_REQUEST['subject']) ) {

        $vacation_setup_raw = True;

    }

}

if ($vacation_setup || $vacation_setup_raw || $vacation_del_log) {

    $forward_active = isset($_REQUEST['active']);

    // validate forward to

    if ($vacation_forward_to == $user) {

        $vacation_forward_to = '';

    }

    $forward_settings = Array(

        '\\'.$user, $vacation_forward_to,

        sprintf($VACATION_FORWARD_ENTRY, $user));

    if ( $vacation_setup_raw ) {

        $vacation_msg = isset($_REQUEST['message']) ? trim($_REQUEST['message']) : '';

        $message_parts = message_split($vacation_msg);

        $vacation_headers = header_clean($message_parts[0]);

        $vacation_body = $message_parts[1];

        $vacation_subject = header_field_body($vacation_headers, 'subject');

        header_set($vacation_headers, 'X-WSV-Format: raw');

        $x_wsv_raw = True;

    } else {

        $vacation_subject = isset($_REQUEST['subject']) ? trim($_REQUEST['subject']) : '';

        $vacation_body = isset($_REQUEST['body']) ? trim($_REQUEST['body']) : '';

        $vacation_headers = Array();

        $x_wsv_raw = False;

    }

    while (True) {

        if ($vacation_del_log) {

            system(sprintf(

                       '%s -u %s %s %s -i',

                       $SUDO_CMD, $user, $SUDO_OPT_H, $VACATION_CMD));

            break;

        }

        if (empty ($vacation_subject)) {

            error_msg(get_text('error_no_subject'));

            break;

        }

        if (!$is_admin && !empty($vacation_forward_to) && !in_array($vacation_forward_to, $user_names)) {

            error_msg(sprintf('%s (%s)!', get_text('error_unknown_forward'), $vacation_forward_to));

            break;

        }

        // Actually set it

        // Prepare vacation(1) message

        if (!empty($vacation_forward_to)) {

            header_set($vacation_headers, sprintf('X-WSV-Forward-To: %s', $vacation_forward_to));

        }

        if ( $vacation_setup_raw ) {

            $vacation_msg = message_join($vacation_headers, $vacation_body);

            // echo "<pre>"; // |:debug:|

            // var_dump($vacation_headers);

            // var_dump($vacation_body);

            // echo $vacation_msg;

            // echo "</pre>";

        } else {

            $vacation_msg = vacation_join($vacation_subject, $vacation_body, $vacation_headers);

        }

        $vacation_msg_pipe = popen(sprintf(

                  '%s -u %s %s %s %s',

                  $SUDO_CMD, $user, $SUDO_OPT_H, $WRITE_TO_CMD, $vacation_msg_file),

            'w');

        fwrite($vacation_msg_pipe, $vacation_msg);

        pclose($vacation_msg_pipe);

        // Initialize vacation(1) if necessary.

        if (!test_readable($vacation_db_file, $user)) {

            system(sprintf(

                       '%s -u %s %s %s -i',

                       $SUDO_CMD, $user, $SUDO_OPT_H, $VACATION_CMD));

        }

        // Write or remove .forward file

        if ($forward_active) {

            $use_fs = Array();

            foreach ($forward_settings as $fs) {

                if (empty($fs)) {

                    continue;

                }

                $use_fs[] = $fs;

            }

            $forward_file_pipe = popen(sprintf(

                      '%s -u %s %s %s %s',

                      $SUDO_CMD, $user, $SUDO_OPT_H, $WRITE_TO_CMD, $forward_file),

                'w');

            fwrite($forward_file_pipe, implode(", ", $use_fs)."\n");

            pclose($forward_file_pipe);

        } else {

            system(sprintf(

                       '%s -u %s %s %s %s',

                       $SUDO_CMD, $user, $SUDO_OPT_H, $RM_CMD, $forward_file));

        }

        break;

    }

}

// echo ('<pre>'."\n");            // |:debug:|

// echo ($vacation_forward_to);

// var_dump($forward_settings);

// echo ('</pre>'."\n");

// --------------------------------------------------

// |||:sec:||| User Interface

// --------------------------------------------------

$form = Array();

//$form[] = '<hr class="sep"/>';

$form[] = '<form action="index.php" method="post">';

$form[] = '<div>';

if ($_debug) {

    $form[] = sprintf(

        '<input type="hidden" name="_DEBUG_" value="%s" />', $_debug);

}

// Retrieval

$form[] = '<span class="label">';

$form[] = sprintf('<input type="submit" name="refresh" value="%s" />', get_text('refresh'));

$form[] = sprintf('<br /><input type="submit" name="clear" value="%s" />', get_text('clear'));

$form[] = '</span>';

// column names

$form[] = '<div style="display: inline-block; padding: 0; margin: 0;"><table border="0" cellspacing="0" cellpadding="2" style="width: 445px; vertical-align: top;">';

$trow = Array();

$trow[] = get_text('user');

$trow[] = get_text('forward_to');

$trow[] = get_text('active');

$form[] = sprintf('<tr><th style="text-align: center;">&nbsp;%s&nbsp;</th></tr>', implode($trow, '&nbsp;</th><th style="text-align: center;">&nbsp;'));

$trow = Array();

// user

$user_control = Array();

if ($is_admin) {

    $user_control[] = '<select name="user">';

    foreach ($user_names as $sel_user) {

        if ($sel_user == $user) {

            $selected = ' selected="selected"';

        } else {

            $selected = '';

        }

        $user_control[] = sprintf('<option%s>%s</option>', $selected, $sel_user);

    }

    $user_control[] = '</select>';

    $user_control = implode($user_control, "\n");

} else {

    $user_control = sprintf(

        '<input type="hidden" name="user" value="%s" />%s', $user, $user);

}

$trow[] = $user_control;

// forward

$user_control = Array();

$user_control[] = '<select name="forward">';

$user_control[] = sprintf('<option value="">%s</option>', get_text('none'));

$selected = '';