<?php
/***************************************************************************
 *                              page_header.php
 *                            -------------------
 *   begin                : Saturday, Feb 13, 2001
 *   copyright            : (C) 2001 The phpBB Group
 *   email                : support@phpbb.com
 *
 *   $Id: page_header.php 5283 2005-10-30 15:17:14Z acydburn $
 *
 *
 ***************************************************************************/

/***************************************************************************
 *
 *   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.
 *
 ***************************************************************************/

if ( !defined('IN_PHPBB') )
{
	die("Hacking attempt");
}

define('HEADER_INC', TRUE);

//
// gzip_compression
//
$do_gzip_compress = FALSE;
if ( $board_config['gzip_compress'] )
{
	$phpver = phpversion();

	$useragent = (isset($HTTP_SERVER_VARS['HTTP_USER_AGENT'])) ? $HTTP_SERVER_VARS['HTTP_USER_AGENT'] : getenv('HTTP_USER_AGENT');

	if ( $phpver >= '4.0.4pl1' && ( strstr($useragent,'compatible') || strstr($useragent,'Gecko') ) )
	{
		if ( extension_loaded('zlib') )
		{
			ob_start('ob_gzhandler');
		}
	}
	else if ( $phpver > '4.0' )
	{
		if ( strstr($HTTP_SERVER_VARS['HTTP_ACCEPT_ENCODING'], 'gzip') )
		{
			if ( extension_loaded('zlib') )
			{
				$do_gzip_compress = TRUE;
				ob_start();
				ob_implicit_flush(0);

				header('Content-Encoding: gzip');
			}
		}
	}
}

//
// Parse and show the overall header.
//
$template->set_filenames(array(
	'overall_header' => ( empty($gen_simple_header) ) ? 'overall_header.tpl' : 'simple_header.tpl')
);

//
// Generate logged in/logged out status
//
if ( $userdata['session_logged_in'] )
{
	$u_login_logout = 'login.'.$phpEx.'?logout=true&amp;sid=' . $userdata['session_id'];
	$l_login_logout = $lang['Logout'] . ' [ ' . $userdata['username'] . ' ]';
}
else
{
	$u_login_logout = 'login.'.$phpEx;
	$l_login_logout = $lang['Login'];
}

$s_last_visit = ( $userdata['session_logged_in'] ) ? create_date($board_config['default_dateformat'], $userdata['user_lastvisit'], $board_config['board_timezone']) : '';

//
// Get basic (usernames + totals) online
// situation
//
$logged_visible_online = 0;
$logged_hidden_online = 0;
$guests_online = 0;
$online_userlist = '';
$l_online_users = '';

if (defined('SHOW_ONLINE'))
{

	$user_forum_sql = ( !empty($forum_id) ) ? "AND s.session_page = " . intval($forum_id) : '';
	$sql = "SELECT u.username, u.user_id, u.user_allow_viewonline, u.user_level, s.session_logged_in, s.session_ip
		FROM ".USERS_TABLE." u, ".SESSIONS_TABLE." s
		WHERE u.user_id = s.session_user_id
			AND s.session_time >= ".( time() - 300 ) . "
			$user_forum_sql
		ORDER BY u.username ASC, s.session_ip ASC";
	if( !($result = $db->sql_query($sql)) )
	{
		message_die(GENERAL_ERROR, 'Could not obtain user/online information', '', __LINE__, __FILE__, $sql);
	}

	$userlist_ary = array();
	$userlist_visible = array();

	$prev_user_id = 0;
	$prev_user_ip = $prev_session_ip = '';

	while( $row = $db->sql_fetchrow($result) )
	{
		// User is logged in and therefor not a guest
		if ( $row['session_logged_in'] )
		{
			// Skip multiple sessions for one user
			if ( $row['user_id'] != $prev_user_id )
			{
				$style_color = '';
				if ( $row['user_level'] == ADMIN )
				{
					$row['username'] = '<b>' . $row['username'] . '</b>';
					$style_color = 'style="color:#' . $theme['fontcolor3'] . '"';
				}
				else if ( $row['user_level'] == MOD )
				{
					$row['username'] = '<b>' . $row['username'] . '</b>';
					$style_color = 'style="color:#' . $theme['fontcolor2'] . '"';
				}

				if ( $row['user_allow_viewonline'] )
				{
					$user_online_link = '<a href="' . append_sid("profile.$phpEx?mode=viewprofile&amp;" . POST_USERS_URL . "=" . $row['user_id']) . '"' . $style_color .'>' . $row['username'] . '</a>';
					$logged_visible_online++;
				}
				else
				{
					$user_online_link = '<a href="' . append_sid("profile.$phpEx?mode=viewprofile&amp;" . POST_USERS_URL . "=" . $row['user_id']) . '"' . $style_color .'><i>' . $row['username'] . '</i></a>';
					$logged_hidden_online++;
				}

				if ( $row['user_allow_viewonline'] || $userdata['user_level'] == ADMIN )
				{
					$online_userlist .= ( $online_userlist != '' ) ? ', ' . $user_online_link : $user_online_link;
				}
			}

			$prev_user_id = $row['user_id'];
		}
		else
		{
			// Skip multiple sessions for one user
			if ( $row['session_ip'] != $prev_session_ip )
			{
				$guests_online++;
			}
		}

		$prev_session_ip = $row['session_ip'];
	}
	$db->sql_freeresult($result);

	if ( empty($online_userlist) )
	{
		$online_userlist = $lang['None'];
	}
	$online_userlist = ( ( isset($forum_id) ) ? $lang['Browsing_forum'] : $lang['Registered_users'] ) . ' ' . $online_userlist;

	$total_online_users = $logged_visible_online + $logged_hidden_online + $guests_online;

	if ( $total_online_users > $board_config['record_online_users'])
	{
		$board_config['record_online_users'] = $total_online_users;
		$board_config['record_online_date'] = time();

		$sql = "UPDATE " . CONFIG_TABLE . "
			SET config_value = '$total_online_users'
			WHERE config_name = 'record_online_users'";
		if ( !$db->sql_query($sql) )
		{
			message_die(GENERAL_ERROR, 'Could not update online user record (nr of users)', '', __LINE__, __FILE__, $sql);
		}

		$sql = "UPDATE " . CONFIG_TABLE . "
			SET config_value = '" . $board_config['record_online_date'] . "'
			WHERE config_name = 'record_online_date'";
		if ( !$db->sql_query($sql) )
		{
			message_die(GENERAL_ERROR, 'Could not update online user record (date)', '', __LINE__, __FILE__, $sql);
		}
	}

	if ( $total_online_users == 0 )
	{
		$l_t_user_s = $lang['Online_users_zero_total'];
	}
	else if ( $total_online_users == 1 )
	{
		$l_t_user_s = $lang['Online_user_total'];
	}
	else
	{
		$l_t_user_s = $lang['Online_users_total'];
	}

	if ( $logged_visible_online == 0 )
	{
		$l_r_user_s = $lang['Reg_users_zero_total'];
	}
	else if ( $logged_visible_online == 1 )
	{
		$l_r_user_s = $lang['Reg_user_total'];
	}
	else
	{
		$l_r_user_s = $lang['Reg_users_total'];
	}

	if ( $logged_hidden_online == 0 )
	{
		$l_h_user_s = $lang['Hidden_users_zero_total'];
	}
	else if ( $logged_hidden_online == 1 )
	{
		$l_h_user_s = $lang['Hidden_user_total'];
	}
	else
	{
		$l_h_user_s = $lang['Hidden_users_total'];
	}

	if ( $guests_online == 0 )
	{
		$l_g_user_s = $lang['Guest_users_zero_total'];
	}
	else if ( $guests_online == 1 )
	{
		$l_g_user_s = $lang['Guest_user_total'];
	}
	else
	{
		$l_g_user_s = $lang['Guest_users_total'];
	}

	$l_online_users = sprintf($l_t_user_s, $total_online_users);
	$l_online_users .= sprintf($l_r_user_s, $logged_visible_online);
	$l_online_users .= sprintf($l_h_user_s, $logged_hidden_online);
	$l_online_users .= sprintf($l_g_user_s, $guests_online);
}

//
// Obtain number of new private messages
// if user is logged in
//
if ( ($userdata['session_logged_in']) && (empty($gen_simple_header)) )
{
	if ( $userdata['user_new_privmsg'] )
	{
		$l_message_new = ( $userdata['user_new_privmsg'] == 1 ) ? $lang['New_pm'] : $lang['New_pms'];
		$l_privmsgs_text = sprintf($l_message_new, $userdata['user_new_privmsg']);

		if ( $userdata['user_last_privmsg'] > $userdata['user_lastvisit'] )
		{
			$sql = "UPDATE " . USERS_TABLE . "
				SET user_last_privmsg = " . $userdata['user_lastvisit'] . "
				WHERE user_id = " . $userdata['user_id'];
			if ( !$db->sql_query($sql) )
			{
				message_die(GENERAL_ERROR, 'Could not update private message new/read time for user', '', __LINE__, __FILE__, $sql);
			}

			$s_privmsg_new = 1;
			$icon_pm = $images['pm_new_msg'];
		}
		else
		{
			$s_privmsg_new = 0;
			$icon_pm = $images['pm_new_msg'];
		}
	}
	else
	{
		$l_privmsgs_text = $lang['No_new_pm'];

		$s_privmsg_new = 0;
		$icon_pm = $images['pm_no_new_msg'];
	}

	if ( $userdata['user_unread_privmsg'] )
	{
		$l_message_unread = ( $userdata['user_unread_privmsg'] == 1 ) ? $lang['Unread_pm'] : $lang['Unread_pms'];
		$l_privmsgs_text_unread = sprintf($l_message_unread, $userdata['user_unread_privmsg']);
	}
	else
	{
		$l_privmsgs_text_unread = $lang['No_unread_pm'];
	}
}
else
{
	$icon_pm = $images['pm_no_new_msg'];
	$l_privmsgs_text = $lang['Login_check_pm'];
	$l_privmsgs_text_unread = '';
	$s_privmsg_new = 0;
}

//
// Generate HTML required for Mozilla Navigation bar
//
if (!isset($nav_links))
{
	$nav_links = array();
}

$nav_links_html = '';
$nav_link_proto = '<link rel="%s" href="%s" title="%s" />' . "\n";
while( list($nav_item, $nav_array) = @each($nav_links) )
{
	if ( !empty($nav_array['url']) )
	{
		$nav_links_html .= sprintf($nav_link_proto, $nav_item, append_sid($nav_array['url']), $nav_array['title']);
	}
	else
	{
		// We have a nested array, used for items like <link rel='chapter'> that can occur more than once.
		while( list(,$nested_array) = each($nav_array) )
		{
			$nav_links_html .= sprintf($nav_link_proto, $nav_item, $nested_array['url'], $nested_array['title']);
		}
	}
}

// Format Timezone. We are unable to use array_pop here, because of PHP3 compatibility
$l_timezone = explode('.', $board_config['board_timezone']);
$l_timezone = (count($l_timezone) > 1 && $l_timezone[count($l_timezone)-1] != 0) ? $lang[sprintf('%.1f', $board_config['board_timezone'])] : $lang[number_format($board_config['board_timezone'])];
//
// The following assigns all _common_ variables that may be used at any point
// in a template.
//
$template->assign_vars(array(
	'SITENAME' => $board_config['sitename'],
	'SITE_DESCRIPTION' => $board_config['site_desc'],
	'PAGE_TITLE' => $page_title,
	'LAST_VISIT_DATE' => sprintf($lang['You_last_visit'], $s_last_visit),
	'CURRENT_TIME' => sprintf($lang['Current_time'], create_date($board_config['default_dateformat'], time(), $board_config['board_timezone'])),
	'TOTAL_USERS_ONLINE' => $l_online_users,
	'LOGGED_IN_USER_LIST' => $online_userlist,
	'RECORD_USERS' => sprintf($lang['Record_online_users'], $board_config['record_online_users'], create_date($board_config['default_dateformat'], $board_config['record_online_date'], $board_config['board_timezone'])),
	'PRIVATE_MESSAGE_INFO' => $l_privmsgs_text,
	'PRIVATE_MESSAGE_INFO_UNREAD' => $l_privmsgs_text_unread,
	'PRIVATE_MESSAGE_NEW_FLAG' => $s_privmsg_new,

	'PRIVMSG_IMG' => $icon_pm,

	'L_USERNAME' => $lang['Username'],
	'L_PASSWORD' => $lang['Password'],
	'L_LOGIN_LOGOUT' => $l_login_logout,
	'L_LOGIN' => $lang['Login'],
	'L_LOG_ME_IN' => $lang['Log_me_in'],
	'L_AUTO_LOGIN' => $lang['Log_me_in'],
	'L_INDEX' => sprintf($lang['Forum_Index'], $board_config['sitename']),
	'L_REGISTER' => $lang['Register'],
	'L_PROFILE' => $lang['Profile'],
	'L_SEARCH' => $lang['Search'],
	'L_PRIVATEMSGS' => $lang['Private_Messages'],
	'L_WHO_IS_ONLINE' => $lang['Who_is_Online'],
	'L_MEMBERLIST' => $lang['Memberlist'],
	'L_FAQ' => $lang['FAQ'],
	'L_USERGROUPS' => $lang['Usergroups'],
	'L_SEARCH_NEW' => $lang['Search_new'],
	'L_SEARCH_UNANSWERED' => $lang['Search_unanswered'],
	'L_SEARCH_SELF' => $lang['Search_your_posts'],
	'L_WHOSONLINE_ADMIN' => sprintf($lang['Admin_online_color'], '<span style="color:#' . $theme['fontcolor3'] . '">', '</span>'),
	'L_WHOSONLINE_MOD' => sprintf($lang['Mod_online_color'], '<span style="color:#' . $theme['fontcolor2'] . '">', '</span>'),

	'U_SEARCH_UNANSWERED' => append_sid('search.'.$phpEx.'?search_id=unanswered'),
	'U_SEARCH_SELF' => append_sid('search.'.$phpEx.'?search_id=egosearch'),
	'U_SEARCH_NEW' => append_sid('search.'.$phpEx.'?search_id=newposts'),
	'U_INDEX' => append_sid('index.'.$phpEx),
	'U_REGISTER' => append_sid('profile.'.$phpEx.'?mode=register'),
	'U_PROFILE' => append_sid('profile.'.$phpEx.'?mode=editprofile'),
	'U_PRIVATEMSGS' => append_sid('privmsg.'.$phpEx.'?folder=inbox'),
	'U_PRIVATEMSGS_POPUP' => append_sid('privmsg.'.$phpEx.'?mode=newpm'),
	'U_SEARCH' => append_sid('search.'.$phpEx),
	'U_MEMBERLIST' => append_sid('memberlist.'.$phpEx),
	'U_MODCP' => append_sid('modcp.'.$phpEx),
	'U_FAQ' => append_sid('faq.'.$phpEx),
	'U_VIEWONLINE' => append_sid('viewonline.'.$phpEx),
	'U_LOGIN_LOGOUT' => append_sid($u_login_logout),
	'U_GROUP_CP' => append_sid('groupcp.'.$phpEx),

	'S_CONTENT_DIRECTION' => $lang['DIRECTION'],
	'S_CONTENT_ENCODING' => $lang['ENCODING'],
	'S_CONTENT_DIR_LEFT' => $lang['LEFT'],
	'S_CONTENT_DIR_RIGHT' => $lang['RIGHT'],
	'S_TIMEZONE' => sprintf($lang['All_times'], $l_timezone),
	'S_LOGIN_ACTION' => append_sid('login.'.$phpEx),

	'T_HEAD_STYLESHEET' => $theme['head_stylesheet'],
	'T_BODY_BACKGROUND' => $theme['body_background'],
	'T_BODY_BGCOLOR' => '#'.$theme['body_bgcolor'],
	'T_BODY_TEXT' => '#'.$theme['body_text'],
	'T_BODY_LINK' => '#'.$theme['body_link'],
	'T_BODY_VLINK' => '#'.$theme['body_vlink'],
	'T_BODY_ALINK' => '#'.$theme['body_alink'],
	'T_BODY_HLINK' => '#'.$theme['body_hlink'],
	'T_TR_COLOR1' => '#'.$theme['tr_color1'],
	'T_TR_COLOR2' => '#'.$theme['tr_color2'],
	'T_TR_COLOR3' => '#'.$theme['tr_color3'],
	'T_TR_CLASS1' => $theme['tr_class1'],
	'T_TR_CLASS2' => $theme['tr_class2'],
	'T_TR_CLASS3' => $theme['tr_class3'],
	'T_TH_COLOR1' => '#'.$theme['th_color1'],
	'T_TH_COLOR2' => '#'.$theme['th_color2'],
	'T_TH_COLOR3' => '#'.$theme['th_color3'],
	'T_TH_CLASS1' => $theme['th_class1'],
	'T_TH_CLASS2' => $theme['th_class2'],
	'T_TH_CLASS3' => $theme['th_class3'],
	'T_TD_COLOR1' => '#'.$theme['td_color1'],
	'T_TD_COLOR2' => '#'.$theme['td_color2'],
	'T_TD_COLOR3' => '#'.$theme['td_color3'],
	'T_TD_CLASS1' => $theme['td_class1'],
	'T_TD_CLASS2' => $theme['td_class2'],
	'T_TD_CLASS3' => $theme['td_class3'],
	'T_FONTFACE1' => $theme['fontface1'],
	'T_FONTFACE2' => $theme['fontface2'],
	'T_FONTFACE3' => $theme['fontface3'],
	'T_FONTSIZE1' => $theme['fontsize1'],
	'T_FONTSIZE2' => $theme['fontsize2'],
	'T_FONTSIZE3' => $theme['fontsize3'],
	'T_FONTCOLOR1' => '#'.$theme['fontcolor1'],
	'T_FONTCOLOR2' => '#'.$theme['fontcolor2'],
	'T_FONTCOLOR3' => '#'.$theme['fontcolor3'],
	'T_SPAN_CLASS1' => $theme['span_class1'],
	'T_SPAN_CLASS2' => $theme['span_class2'],
	'T_SPAN_CLASS3' => $theme['span_class3'],

	'NAV_LINKS' => $nav_links_html)
);
//bt
if (@$userdata['session_logged_in'])
{
	$template->assign_vars(array(
		'L_TRACKER' => $lang['Tracker']
	));
}
$template->assign_vars(array('TRACKER_HREF' => append_sid("tracker.$phpEx")));
//bt end

//
// Torrent Stats
//
$current_time = time();
$tor = $peers = $seeders = $leechers = $ratio = $upload = $download = $transfer = 'unknown';

$sql = 'SELECT COUNT(DISTINCT torrent_id) AS torrents
	FROM '. BT_TRACKER_TABLE ."
		WHERE expire_time > $current_time";

if ($row = $db->sql_fetchrow($db->sql_query($sql)))
{
	$tor = $row['torrents'];
}

$sql = 'SELECT SUM(u_up_total) AS upload, SUM(u_down_total) AS download
	FROM '. BT_USERS_TABLE;

if ($row = $db->sql_fetchrow($db->sql_query($sql)))
{
	$upload = humn_size($row['upload']);
	$download = humn_size($row['download']);
	$transfer = humn_size($row['upload'] + $row['download']);
}

$sql = 'SELECT COUNT(*) AS peers, SUM(seeder) AS seeders
		FROM '. BT_TRACKER_TABLE ."
		WHERE expire_time > $current_time";

if ($row = $db->sql_fetchrow($db->sql_query($sql)))
{
	$peers = ( $row['peers'] ) ? $row['peers'] : 0;
	$seeders = ( $row['seeders'] ) ? $row['seeders'] : 0;
	$leechers = $peers - $seeders;
	if ($leechers == 0) { $ratio = 0; } else { $ratio = round($seeders / $leechers * 100, 1); }
}
//
// Login box?
//
if ( !$userdata['session_logged_in'] )
{
	$template->assign_block_vars('switch_user_logged_out', array());
	//
	// Allow autologin?
	//
	if (!isset($board_config['allow_autologin']) || $board_config['allow_autologin'] )
	{
		$template->assign_block_vars('switch_allow_autologin', array());
		$template->assign_block_vars('switch_user_logged_out.switch_allow_autologin', array());
	}
}
else
{
	$template->assign_block_vars('switch_user_logged_in', array());

	if ( !empty($userdata['user_popup_pm']) )
	{
		$template->assign_block_vars('switch_enable_pm_popup', array());
	}
}

// Add no-cache control for cookies if they are set
//$c_no_cache = (isset($HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_sid']) || isset($HTTP_COOKIE_VARS[$board_config['cookie_name'] . '_data'])) ? 'no-cache="set-cookie", ' : '';

// Work around for "current" Apache 2 + PHP module which seems to not
// cope with private cache control setting
if (!empty($HTTP_SERVER_VARS['SERVER_SOFTWARE']) && strstr($HTTP_SERVER_VARS['SERVER_SOFTWARE'], 'Apache/2'))
{
	header ('Cache-Control: no-cache, pre-check=0, post-check=0');
}
else
{
	header ('Cache-Control: private, pre-check=0, post-check=0, max-age=0');
}
header ('Expires: 0');
header ('Pragma: no-cache');

$template->pparse('overall_header');

?>