<?php
/*
	$Id$
	part of m0n0wall (http://m0n0.ch/wall)
	
	Copyright (C) 2003-2007 Manuel Kasper <mk@neon1.net>.
	All rights reserved.
	
	Portions Copyright (C) 2007-2008 IKT <http://itison-ikt.de>.
	All rights reserved.
	
	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions are met:
	
	1. Redistributions of source code must retain the above copyright notice,
	   this list of conditions and the following disclaimer.
	
	2. Redistributions in binary form must reproduce the above copyright
	   notice, this list of conditions and the following disclaimer in the
	   documentation and/or other materials provided with the distribution.
	
	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	POSSIBILITY OF SUCH DAMAGE.
*/

/* include all configuration functions */
require_once("functions.inc");
	
function system_resolvconf_generate($dynupdate = false) {
	global $config, $g;
	
	$syscfg = $config['system'];
	
	$fd = fopen("{$g['varetc_path']}/resolv.conf", "w");
	if (!$fd) {
		printf("Error: cannot open resolv.conf in system_resolvconf_generate().\n");
		return 1;
	}
		
	$resolvconf = "domain {$syscfg['domain']}\n";
	
	$havedns = false;
	
	if (isset($syscfg['dnsallowoverride'])) {
		/* get dynamically assigned DNS servers (if any) */
		$nfd = @fopen("{$g['varetc_path']}/nameservers.conf", "r");
		if ($nfd) {
			while (!feof($nfd)) {
				$dnss = trim(fgets($nfd));
				if ($dnss) {
					$resolvconf .= "nameserver $dnss\n";
					$havedns = true;
				}
			}
			fclose($nfd);
		}
	}
	if (!$havedns && is_array($syscfg['dnsserver'])) {
		foreach ($syscfg['dnsserver'] as $ns) {
			if ($ns)
				$resolvconf .= "nameserver $ns\n";
			$havedns = true;
		}
	}
		
	fwrite($fd, $resolvconf);
	fclose($fd);
	
	if (!$g['booting']) {
		/* restart dhcpd (nameservers may have changed) */
		if (!$dynupdate)
			services_dhcpd_configure();
	}
	
	return 0;
}

function system_hosts_generate() {
	global $config, $g;
	
	$syscfg = $config['system'];
	$lancfg = $config['interfaces']['lan'];
	$dnsmasqcfg = $config['dnsmasq'];

	if (!is_array($dnsmasqcfg['hosts'])) {
		$dnsmasqcfg['hosts'] = array();
	}
	$hostscfg = $dnsmasqcfg['hosts'];
	
	$fd = fopen("{$g['varetc_path']}/hosts", "w");
	if (!$fd) {
		printf("Error: cannot open hosts file in system_hosts_generate().\n");
		return 1;
	}
		
	$hosts = <<<EOD
127.0.0.1	localhost localhost.{$syscfg['domain']}
{$lancfg['ipaddr']}	{$syscfg['hostname']}.{$syscfg['domain']} {$syscfg['hostname']}

EOD;
	
	foreach ($hostscfg as $host) {
		if ($host['host'])
			$hosts .= "{$host['ip']}	{$host['host']}.{$host['domain']} {$host['host']}\n";
		else
			$hosts .= "{$host['ip']}	{$host['domain']}\n";
	}
	fwrite($fd, $hosts);
	fclose($fd);
	
	return 0;
}

function system_hostname_configure() {
	global $config, $g;
	
	$syscfg = $config['system'];
	
	/* set hostname */
	return mwexec("/bin/hostname " .
		escapeshellarg("{$syscfg['hostname']}.{$syscfg['domain']}"));
}

function system_routing_configure() {
	global $config, $g;
	
	foreach (array(false, true) as $ipv6) {
		$routes_db = $g['vardb_path'] . '/routes' . ($ipv6 ? '6' : '') . '.db';
		$inet = ($ipv6 ? '-inet6' : '');
		$strtconf = 'route' . ($ipv6 ? '6' : '');
		
		/* clear out old routes, if necessary */
		if (file_exists($routes_db)) {
			$fd = fopen($routes_db, "r");
			if (!$fd) {
				printf("Error: cannot open routes DB file in system_routing_configure().\n");
				return 1;		
			}
			while (!feof($fd)) {
				$oldrt = fgets($fd);
				if ($oldrt)
					mwexec("/sbin/route delete $inet " . escapeshellarg($oldrt));
			}
			fclose($fd);
			unlink($routes_db);
		}
	
		if ((!$ipv6 && is_array($config['staticroutes']['route'])) || ($ipv6 && ipv6enabled())) {
		
			$fd = fopen($routes_db, "w");
			if (!$fd) {
				printf("Error: cannot open routes DB file in system_routing_configure().\n");
				return 1;		
			}
			
			$routes = $config['staticroutes'][$strtconf];
			if (!is_array($routes))
				$routes = array();
			
			if ($ipv6) {
				/* disallow "internal" addresses to appear on the wire */
				array_push($routes, array('network' => '::ffff:0.0.0.0/96',
										  'gateway' => '::1',
										  'opts'    => '-reject'));
				array_push($routes, array('network' => '::0.0.0.0/96',
										  'gateway' => '::1',
										  'opts'    => '-reject'));

				/* disallow packets to malicious 6to4 prefix */
				array_push($routes, array('network' => '2002:e000::/20',
										  'gateway' => '::1',
										  'opts'    => '-reject'));
				array_push($routes, array('network' => '2002:7f00::/24',
										  'gateway' => '::1',
										  'opts'    => '-reject'));
				array_push($routes, array('network' => '2002:0000::/24',
										  'gateway' => '::1',
										  'opts'    => '-reject'));
				array_push($routes, array('network' => '2002:ff00::/24',
										  'gateway' => '::1',
										  'opts'    => '-reject'));

				/* Disallow unicast packets without outgoing scope identifiers,
					or route such packets to a "default" interface, if it is
					specified. */
				array_push($routes, array('network' => 'fe80::/10',
										  'gateway' => '::1',
										  'opts'    => '-reject'));
			}
		
			foreach ($routes as $rtent) {
				mwexec("/sbin/route add $inet " . escapeshellarg($rtent['network']) . 
					' ' . escapeshellarg($rtent['gateway']) .
					' ' . escapeshellarg($rtent['opts']));
			
				/* record route so it can be easily removed later (if necessary) */
				fwrite($fd, $rtent['network'] . "\n");
			}
		
			fclose($fd); 
		}
	}
	
	return 0;
}

function ipv6enabled() {
	global $config;
	return isset($config['system']['enableipv6']);
}

function system_routing_enable() {
	global $config, $g;
	
	$res = mwexec("/sbin/sysctl net.inet.ip.forwarding=1");
	$res |= mwexec("/sbin/sysctl net.inet6.ip6.forwarding=1");
	return $res;
}

function system_syslogd_start() {
	global $config, $g;
	
	$syslogcfg = $config['syslog'];

	if ($g['booting']) 
		echo "Starting syslog service... ";
	else
		killbypid("{$g['varrun_path']}/syslog.pid");
			
	if (isset($syslogcfg['enable'])) {

		/* write syslog.conf */
		$fd = fopen("{$g['varetc_path']}/syslog.conf", "w");
		if (!$fd) {
			printf("Error: cannot open syslog.conf in system_syslogd_start().\n");
			return 1;
		}
		
		$syslogserver = $syslogcfg['remoteserver'];
		if ($syslogcfg['remoteport'])
			$syslogserver .= ":" . $syslogcfg['remoteport'];
		
		$syslogconf = <<<EOD
local0.*					%/var/log/filter.log
local3.*					%/var/log/vpn.log
local4.*					%/var/log/portalauth.log
local7.*					%/var/log/dhcpd.log
*.notice;kern.debug;lpr.info;mail.crit;news.err;daemon.none;local0.none;local3.none;local4.none;local6.none;local7.none %/var/log/system.log
security.*					%/var/log/system.log
auth.info;authpriv.info;daemon.info		%/var/log/system.log
*.emerg						*

EOD;

		if (isset($syslogcfg['filter'])) {
			$syslogconf .= <<<EOD
local0.*					@{$syslogserver}

EOD;
		}
		
		if (isset($syslogcfg['vpn'])) {
			$syslogconf .= <<<EOD
local3.*					@{$syslogserver}

EOD;
		}
		
		if (isset($syslogcfg['portalauth'])) {
			$syslogconf .= <<<EOD
local4.*					@{$syslogserver}

EOD;
		}

		if (isset($syslogcfg['dhcp'])) {
			$syslogconf .= <<<EOD
local7.*					@{$syslogserver}

EOD;
		}

		if (isset($syslogcfg['system'])) {
			$syslogconf .= <<<EOD
*.notice;kern.debug;lpr.info;mail.crit;news.err;local0.none;local3.none;local4.none;local6.none;local7.none @{$syslogserver}
security.*					@{$syslogserver}
auth.info;authpriv.info;daemon.info		@{$syslogserver}
*.emerg						@{$syslogserver}

EOD;
		}

		fwrite($fd, $syslogconf);
		fclose($fd);
		
		$retval = mwexec("/usr/sbin/syslogd -s -f {$g['varetc_path']}/syslog.conf");

	} else {
		$retval = mwexec("/usr/sbin/syslogd -ss");
	}
	
	if ($g['booting'])
		echo "done\n";
		
	return $retval;
}

function system_webgui_start() {
	global $config, $g;
	
	if ($g['booting'])
		echo "Starting webGUI... ";
	
	/* kill any running mini_httpd */
	killbypid("{$g['varrun_path']}/mini_httpd.pid");
	
	/* generate password file */
	system_password_configure();
	
	chdir($g['www_path']);
	
	/* non-standard port? */
	if ($config['system']['webgui']['port'])
		$portarg = "-p {$config['system']['webgui']['port']}";
	else
		$portarg = "";
	
	if ($config['system']['webgui']['protocol'] == "https") {
	
		if ($config['system']['webgui']['certificate'] && $config['system']['webgui']['private-key']) {
			$cert = base64_decode($config['system']['webgui']['certificate']);
			$key = base64_decode($config['system']['webgui']['private-key']);
		} else {
			/* default certificate/key */
			$cert = <<<EOD
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

EOD;

			$key = <<<EOD
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

EOD;
		}
		
		$fd = fopen("{$g['varetc_path']}/cert.pem", "w");
		if (!$fd) {
			printf("Error: cannot open cert.pem in system_webgui_start().\n");
			return 1;
		}
		chmod("{$g['varetc_path']}/cert.pem", 0600);
		fwrite($fd, $cert);
		fwrite($fd, "\n");
		fwrite($fd, $key);
		fclose($fd);
	
		$res = mwexec("/usr/local/sbin/mini_httpd -S -E {$g['varetc_path']}/cert.pem" .
			" -c \"**.php|**.cgi\" -u root -maxproc 16 $portarg" .
			" -i {$g['varrun_path']}/mini_httpd.pid");
	} else {
		$res = mwexec("/usr/local/sbin/mini_httpd -c \"**.php|**.cgi\" -u root" .
			" -maxproc 16 $portarg -i {$g['varrun_path']}/mini_httpd.pid");
	}
	
	if ($g['booting']) {
		if ($res == 0)
			echo "done\n";
		else
			echo "failed\n";
	}
	
	return $res;
}

function system_password_configure() {
	global $config, $g;
	
	$fd = fopen("{$g['varrun_path']}/htpasswd", "w");
	if (!$fd) {
		printf("Error: cannot open htpasswd in system_password_configure().\n");
		return 1;
	}
	
	if ($config['system']['username'])
		$username = $config['system']['username'];
	else
		$username = "admin";
	
	fwrite($fd, $username . ":" . $config['system']['password'] . "\n");

	if (is_array($config['system']['user'])) {
		foreach ($config['system']['user'] as $userent) {
			    fwrite($fd, $userent['name'] . ":" 
		              . $userent['password'] . "\n");
		}
	}
	
	fclose($fd);
	chmod("{$g['varrun_path']}/htpasswd", 0600);
	
	return 0;
}

function system_timezone_configure() {
	global $config, $g;

	$syscfg = $config['system'];

	if ($g['booting'])
		echo "Initializing timezone... ";

	/* extract appropriate timezone file */
	$timezone = $syscfg['timezone'];
	if (!$timezone)
		$timezone = "Etc/UTC";
		
	exec("/usr/bin/tar xzfO /usr/share/zoneinfo.tgz " . 
		escapeshellarg($timezone) . " > /etc/localtime");

	if ($g['booting'])
		echo "done\n";
}

function system_ntp_configure() {
	global $config, $g;

	$syscfg = $config['system'];

	if ($g['booting'])
		echo "Starting NTP client... ";
	else {
		killbypid("{$g['varrun_path']}/runsntp.pid");
		killbypid("{$g['varrun_path']}/sntp.pid");
	}

	/* start ntp client if needed - needs to be forced into background */
	$updateinterval = $syscfg['time-update-interval'];
	
	if ($updateinterval > 0) {
		if ($updateinterval < 6)
			$updateinterval = 6;
		
		$timeservers = "";
		foreach (explode(' ', $syscfg['timeservers']) as $ts)
			$timeservers .= " " . $ts;
		
		mwexec_bg("/usr/local/bin/runsntp.sh " .
			escapeshellarg("{$g['varrun_path']}/runsntp.pid") . " " .
			escapeshellarg("{$g['varrun_path']}/sntp.pid") . " " .
			escapeshellarg($updateinterval) . " " .
			escapeshellarg($timeservers));
	}
		
	if ($g['booting'])
		echo "done\n";
}

function system_reboot() {
	global $g;
	
	system_reboot_cleanup();
	
	mwexec("nohup /etc/rc.reboot > /dev/null 2>&1 &");
}

function system_reboot_sync() {
	global $g;
	
	system_reboot_cleanup();
	
	mwexec("/etc/rc.reboot > /dev/null 2>&1");
}

function system_reboot_cleanup() {
	captiveportal_radius_stop_all();
    voucher_save_db_to_config();
}

function system_do_shell_commands($early = 0) {
	global $config, $g;
	
	if ($early)
		$cmdn = "earlyshellcmd";
	else
		$cmdn = "shellcmd";
	
	if (is_array($config['system'][$cmdn])) {
		
		foreach ($config['system'][$cmdn] as $cmd) {
			exec($cmd);
		}
	}
}

function system_do_extensions($early = false) {
	global $config, $g;
	
	if (!is_dir("{$g['etc_path']}/inc/ext") || is_dir("{$g['www_path']}/ext"))
		return;
	
	$dh = @opendir("{$g['etc_path']}/inc/ext");
	if ($dh) {
		while (($extd = readdir($dh)) !== false) {
			if (($extd === ".") || ($extd === ".."))
				continue;
			$rcfile = "{$g['etc_path']}/inc/ext/" . $extd . "/" . ($early ? "rc.early" : "rc");
			if (file_exists($rcfile))
				passthru($rcfile);
		}
		closedir($dh);
	}
	
	// Create the symbolic links for .htpasswd and gui.css
	// in each www/ext directory.
	if (!$early) {
    	$dh = @opendir("{$g['www_path']}/ext");
    	if ($dh) {
    		while (($extd = readdir($dh)) !== false) {
    			if (($extd === ".") || ($extd === ".."))
    				continue;
    			if (is_dir("{$g['www_path']}/ext/$extd")) {
    			    // Create links
    			    symlink("{$g['www_path']}/.htpasswd","{$g['www_path']}/ext/{$extd}/.htpasswd");
    			    symlink("{$g['www_path']}/gui.css","{$g['www_path']}/ext/{$extd}/gui.css");
    			}
    		}
    		closedir($dh);
    	}
	}
	
	
}

function system_console_configure() {
	global $config, $g;
	
	if (isset($config['system']['disableconsolemenu'])) {
		touch("{$g['varetc_path']}/disableconsole");
	} else {
		unlink_if_exists("{$g['varetc_path']}/disableconsole");
	}
}

function system_dmesg_save() {
	global $g;
	
	if (file_exists("{$g['varlog_path']}/dmesg.boot"))
		return 0;	/* nothing to do */
	
	exec("/sbin/dmesg", $dmesg);
	
	/* find last copyright line (output from previous boots may be present) */
	$lastcpline = 0;
	
	for ($i = 0; $i < count($dmesg); $i++) {
		if (strstr($dmesg[$i], "Copyright (c) 1992-"))
			$lastcpline = $i;
	}
	
	$fd = fopen("{$g['varlog_path']}/dmesg.boot", "w");
	if (!$fd) {
		printf("Error: cannot open dmesg.boot in system_dmesg_save().\n");
		return 1;
	}
	
	for ($i = $lastcpline; $i < count($dmesg); $i++)
		fwrite($fd, $dmesg[$i] . "\n");
	
	fclose($fd);
	
	return 0;
}

function system_set_harddisk_standby() {
	global $g, $config;

	if ($g['platform'] != "generic-pc")
		return;

	if (isset($config['system']['harddiskstandby']) && 
			($config['system']['harddiskstandby'] > 0)) {
		if ($g['booting']) {
			echo 'Setting harddisk standby time... ';
		}

		$standby = $config['system']['harddiskstandby'];
		// Check for a numeric value
		if (is_numeric($standby)) {
			mwexec("/usr/local/sbin/ataidle -S $standby 0 0");
			if ($g['booting']) {
				echo "done\n";
			}
		} else if ($g['booting']) {
			echo "failed\n";
		}
	}
}

function system_set_termcap() {
	global $config;
	
	if (isset($config['diag']['ipfstatentries'])) {
		$lines = $config['diag']['ipfstatentries'] + 6;
	}
	else {
		$lines = 306;
	}
	
	$termcap = <<<EOD
cons25w|ansiw|ansi80x25-raw:\
	:am:bs:NP:ms:pt:AX:eo:bw:ut:km:\
	:co#80:li#25:pa#64:Co#8:it#8:\
	:al=\E[L:cd=\E[J:ce=\E[K:cl=\E[H\E[J:cm=\E[%i%d;%dH:\
	:dc=\E[P:dl=\E[M:do=\E[B:bt=\E[Z:ho=\E[H:ic=\E[@:cb=\E[1K:\
	:nd=\E[C:rs=\Ec:so=\E[7m:se=\E[27m:up=\E[A:cr=^M:ta=^I:\
	:AF=\E[3%dm:AB=\E[4%dm:op=\E[39;49m:sc=\E7:rc=\E8:\
	:k1=\E[M:k2=\E[N:k3=\E[O:k4=\E[P:k5=\E[Q:k6=\E[R:k7=\E[S:k8=\E[T:\
	:k9=\E[U:k;=\E[V:F1=\E[W:F2=\E[X:K2=\E[E:nw=\E[E:ec=\E[%dX:\
	:kb=^H:kh=\E[H:ku=\E[A:kd=\E[B:kl=\E[D:kr=\E[C:le=^H:sf=\E[S:sr=\E[T:\
	:kN=\E[G:kP=\E[I:@7=\E[F:kI=\E[L:kD=\\177:kB=\E[Z:\
	:IC=\E[%d@:DC=\E[%dP:SF=\E[%dS:SR=\E[%dT:AL=\E[%dL:DL=\E[%dM:\
	:DO=\E[%dB:LE=\E[%dD:RI=\E[%dC:UP=\E[%dA:cv=\E[%i%dd:ch=\E[%i%d`:\
	:mb=\E[5m:md=\E[1m:mr=\E[7m:me=\E[m:bl=^G:\
	:ve=\E[=S:vi=\E[=1S:vs=\E[=2S:
cons25|ansis|ansi80x25:\
	:ac=l\\332m\\300k\\277j\\331u\\264t\\303v\\301w\\302q\\304x\\263n\\305`^Da\\260f\\370g\\361~\\371.^Y-^Xh\\261i^U0\\333y\\363z\\362:\
	:tc=cons25w:
dumb|su|unknown:\
	:am:co#132:li#$lines:do=^J:
xterm-noapp|xterm with cursor keys in normal mode:\
	:kl=\E[D:kd=\E[B:kr=\E[C:ku=\E[A:ks=\E=:ke=\E>:ti@:te@:tc=xterm:
xterm|xterm-color|X11 terminal emulator:\
	:ti@:te@:tc=xterm-xfree86:
xterm-xfree86|XFree86 xterm:\
	:k1=\EOP:k2=\EOQ:k3=\EOR:k4=\EOS:\
	:k5=\E[15~:k6=\E[17~:k7=\E[18~:k8=\E[19~:\
	:k9=\E[20~:k;=\E[21~:F1=\E[23~:F2=\E[24~:\
	:kH=\EOF:@7=\EOF:kI=\E[2~:\
	:kh=\EOH:*6=\EOF:kP=\E[5~:kN=\E[6~:\
	:ku=\EOA:kd=\EOB:kr=\EOC:kl=\EOD:Km=\E[M:tc=xterm-basic:
xterm-basic|xterm common (XFree86):\
	:li#24:co#80:am:kn#12:km:mi:ms:xn:bl=^G:\
	:is=\E[!p\E[?3;4l\E[4l\E>:rs=\E[!p\E[?3;4l\E[4l\E>:le=^H:\
	:AL=\E[%dL:DL=\E[%dM:DC=\E[%dP:al=\E[L:dc=\E[P:dl=\E[M:\
	:UP=\E[%dA:DO=\E[%dB:LE=\E[%dD:RI=\E[%dC:\
	:ho=\E[H:cd=\E[J:ce=\E[K:cl=\E[H\E[2J:cm=\E[%i%d;%dH:cs=\E[%i%d;%dr:\
	:im=\E[4h:ei=\E[4l:ks=\E[?1h\E=:ke=\E[?1l\E>:kD=\E[3~:kb=^H:\
	:sf=\n:sr=\EM:st=\EH:ct=\E[3g:sc=\E7:rc=\E8:\
	:eA=\E(B\E)0:as=^N:ae=^O:ml=\El:mu=\Em:up=\E[A:nd=\E[C:\
	:md=\E[1m:me=\E[m^O:mr=\E[7m:so=\E[7m:se=\E[27m:us=\E[4m:ue=\E[24m:\
	:ti=\E[?1049h:te=\E[?1049l:vi=\E[?25l:ve=\E[?25h:\
	:ut:Co#8:pa#64:op=\E[39;49m:AB=\E[4%dm:AF=\E[3%dm:\

EOD;

	if (!file_exists("/usr/share/misc"))
		mkdir("/usr/share/misc");

	$fd = @fopen("/usr/share/misc/termcap", "w");
	if (!$fd) {
		printf("Error: cannot open termcap in system_set_termcap().\n");
		return 1;
	}
	chmod("/usr/share/misc/termcap", 0644);
	fwrite($fd, $termcap);
	fclose($fd);
	
	return 0;
}

function system_check_reset_button() {
	$specplatform = system_identify_specific_platform();

	if ($specplatform['name'] != "wrap" && $specplatform['name'] != "alix")
		return 0;

	$retval = mwexec("/usr/local/sbin/" . $specplatform['name'] . "resetbtn");

	if ($retval == 99) {
		/* user has pressed reset button for 2 seconds - 
		   reset to factory defaults */
		echo <<<EOD

***********************************************************************
* Reset button pressed - resetting configuration to factory defaults. *
* The system will reboot after this completes.                        *
***********************************************************************


EOD;
		
		reset_factory_defaults();
		system_reboot_sync();
		exit(0);
	}

	return 0;
}

/* attempt to identify the specific platform (for embedded systems)
   Returns an array with two elements:
	name => platform string (e.g. 'wrap', 'alix' etc.)
	descr => human-readable description (e.g. "PC Engines WRAP")
*/
function system_identify_specific_platform() {
	global $g;
	
	if ($g['platform'] == 'generic-pc')
		return array('name' => 'generic-pc', 'descr' => "Generic PC");
	
	if ($g['platform'] == 'generic-pc-cdrom')
		return array('name' => 'generic-pc-cdrom', 'descr' => "Generic PC (CD-ROM)");
	
	/* the rest of the code only deals with 'embedded' platforms */
	if ($g['platform'] != 'embedded')
		return array('name' => $g['platform'], 'descr' => $g['platform']);
	
	$dmesg = system_get_dmesg_boot();
	
	if (strpos($dmesg, "PC Engines WRAP") !== false)
		return array('name' => 'wrap', 'descr' => 'PC Engines WRAP');
	
	if (strpos($dmesg, "PC Engines ALIX") !== false)
		return array('name' => 'alix', 'descr' => 'PC Engines ALIX');

	if (preg_match("/Soekris net45../", $dmesg, $matches))
		return array('name' => 'net45xx', 'descr' => $matches[0]);
	
	if (preg_match("/Soekris net48../", $dmesg, $matches))
		return array('name' => 'net48xx', 'descr' => $matches[0]);
		
	if (preg_match("/Soekris net55../", $dmesg, $matches))
		return array('name' => 'net55xx', 'descr' => $matches[0]);
	
	/* unknown embedded platform */
	return array('name' => 'embedded', 'descr' => 'embedded (unknown)');
}

function system_get_dmesg_boot() {
	global $g;
	
	if (!file_exists("{$g['varlog_path']}/dmesg.boot"))
		system_dmesg_save();
	
	return file_get_contents("{$g['varlog_path']}/dmesg.boot");
}

function storage_disk_get_devices() {
	return explode(" ", trim(exec("/sbin/sysctl -n kern.disks")));
}

function storage_read_diskinfo($device) {
	$output = preg_split("/\s+/", exec("/usr/sbin/diskinfo $device"));

	$info['sectorsize'] = $output[1];
	$info['sizeinbytes'] = $output[2];
	$info['sizeinsectors'] = $output[3];

	return $info;
}

function storage_disk_get_name($device) {
	
	$dmesg = system_get_dmesg_boot();
	$matches = array();
	if (preg_match("/^$device:.*<(.+)>/m", $dmesg, $matches)) {
		$name = $matches[1];
	} else {
		$name = "unavailable";
	}
	
	return $name;
}

?>