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<?php
require_once("config.inc");
require_once("functions.inc");
/* MiniUPnPd */
function upnp_notice ($msg) { syslog(LOG_NOTICE, "miniupnpd: {$msg}"); }
function upnp_warn ($msg) { syslog(LOG_WARNING, "miniupnpd: {$msg}"); }
function upnp_running () {
if((int)exec('pgrep miniupnpd | wc -l') > 0)
return true;
return false;
}
function upnp_write_config($file, $text) {
$handle = fopen($file, 'w');
if(!$handle) {
upnp_warn("Could not open {$file} for writing.");
exit;
}
fwrite($handle, $text);
fclose($handle);
}
function upnp_uuid() {
/* md5 hash of wan mac */
$uuid = md5(exec('arp -an -i '.get_real_wan_interface().' | /usr/bin/cut -d " " -f4'));
/* put uuid in correct format 8-4-4-4-12 */
return substr($uuid,0,8).'-'.substr($uuid,9,4).'-'.substr($uuid,13,4).'-'.substr($uuid,17,4).'-'.substr($uuid,21,12);
}
function upnp_validate_ip($ip, $check_cdir) {
/* validate cdir */
if($check_cdir) {
$ip_array = explode('/', $ip);
if(count($ip_array) == 2) {
if($ip_array[1] < 1 || $ip_array[1] > 32)
return false;
} else
if(count($ip_array) != 1)
return false;
} else
$ip_array[] = $ip;
/* validate ip */
if(!eregi('^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$', $ip_array[0]))
return false;
foreach(explode('.', $ip_array[0]) as $sub)
if($sub < 0 || $sub > 256)
return false;
return true;
}
function upnp_validate_port($port) {
foreach(explode('-', $port) as $sub)
if($sub < 0 || $sub > 65535)
return false;
return true;
}
function before_form_miniupnpd($pkg) {
global $config;
config_lock();
/* if shaper connection speed defined hide fields */
if($config['ezshaper']['step2']['download'] && $config['ezshaper']['step2']['upload']) {
$i=0;
foreach ($pkg['fields']['field'] as $field) {
if ($field['fieldname'] == 'download' || $field['fieldname'] == 'upload')
unset($pkg['fields']['field'][$i]);
$i++;
}
}
config_unlock();
}
function validate_form_miniupnpd($post, $input_errors) {
if($post['iface_array'])
foreach($post['iface_array'] as $iface)
if($iface == 'wan')
$input_errors[] = 'It is a security risk to specify WAN in the \'Interface\' field';
if($post['overridewanip'] && !upnp_validate_ip($post['overridewanip'],false))
$input_errors[] = 'You must specify a valid ip address in the \'Override WAN address\' field';
if(($post['download'] && !$post['upload']) || ($post['upload'] && !$post['download']))
$input_errors[] = 'You must fill in both \'Maximum Download Speed\' and \'Maximum Upload Speed\' fields';
if($post['download'] && $post['download'] <= 0)
$input_errors[] = 'You must specify a value greater than 0 in the \'Maximum Download Speed\' field';
if($post['upload'] && $post['upload'] <= 0)
$input_errors[] = 'You must specify a value greater than 0 in the \'Maximum Upload Speed\' field';
/* user permissions validation */
for($i=1; $i<=4; $i++) {
if($post["permuser{$i}"]) {
$perm = explode(' ',$post["permuser{$i}"]);
/* should explode to 4 args */
if(count($perm) != 4) {
$input_errors[] = "You must follow the specified format in the 'User specified permissions {$i}' field";
} else {
/* must with allow or deny */
if(!($perm[0] == 'allow' || $perm[0] == 'deny'))
$input_errors[] = "You must begin with allow or deny in the 'User specified permissions {$i}' field";
/* verify port or port range */
if(!upnp_validate_port($perm[1]) || !upnp_validate_port($perm[3]))
$input_errors[] = "You must specify a port or port range between 0 and 65535 in the 'User specified
permissions {$i}' field";
/* verify ip address */
if(!upnp_validate_ip($perm[2],true))
$input_errors[] = "You must specify a valid ip address in the 'User specified permissions {$i}' field";
}
}
}
}
function sync_package_miniupnpd() {
global $config;
global $input_errors;
config_lock();
$upnp_config = $config['installedpackages']['miniupnpd']['config'][0];
$config_file = '/var/etc/miniupnpd.conf';
$config_text = "ext_ifname=".get_real_wan_interface()."\n";
$config_text .= "port=2189\n";
$ifaces_active = '';
/* since config is written before this file invoked we don't need to read post data */
if($upnp_config['enable'] && $upnp_config['iface_array'])
$iface_array = explode(',', $upnp_config['iface_array']);
if($iface_array) {
foreach($iface_array as $iface) {
$if = convert_friendly_interface_to_real_interface_name($iface);
/* above function returns iface if fail */
if($if!=$iface) {
$addr = find_interface_ip($if);
/* non enabled interfaces are displayed in list on miniupnpd settings page */
/* check that the interface has an ip address before adding parameters */
if($addr) {
$config_text .= "listening_ip={$addr}\n";
if(!$ifaces_active) {
$webgui_ip = $addr;
$ifaces_active = $iface;
} else {
$ifaces_active .= ", {$iface}";
}
} else {
upnp_warn("Interface {$iface} has no ip address, ignoring");
}
} else {
upnp_warn("Could not resolve real interface for {$iface}");
}
}
if($ifaces_active) {
/* override wan ip address, common for carp, etc */
if($upnp_config['overridewanip'])
$config_text .= "ext_ip={$upnp_config['overridewanip']}\n";
/* if shaper connection speed defined use those values */
if($config['ezshaper']['step2']['download'] && $config['ezshaper']['step2']['upload']) {
$download = $config['ezshaper']['step2']['download']*1000;
$upload = $config['ezshaper']['step2']['upload']*1000;
} else {
$download = $upnp_config['download']*1000;
$upload = $upnp_config['upload']*1000;
}
/* set upload and download bitrates */
if($download && $upload) {
$config_text .= "bitrate_down={$download}\n";
$config_text .= "bitrate_up={$upload}\n";
}
/* enable logging of packets handled by miniupnpd rules */
if($upnp_config['logpackets'])
$config_text .= "packet_log=yes\n";
/* enable system uptime instead of miniupnpd uptime */
if($upnp_config['sysuptime'])
$config_text .= "system_uptime=yes\n";
/* set webgui url */
if($config['system']['webgui']['protocol']) {
$config_text .= "presentation_url={$config['system']['webgui']['protocol']}://{$webgui_ip}";
if($config['system']['webgui']['port'])
$config_text .= ":{$config['system']['webgui']['port']}";
$config_text .= "/\n";
}
/* set uuid and serial */
$config_text .= "uuid=".upnp_uuid()."\n";
$config_text .= "serial=".strtoupper(substr(upnp_uuid(),0,8))."\n";
/* set model number */
$config_text .= "model_number=".exec("/bin/cat /etc/version")."\n";
/* upnp access restrictions */
for($i=1; $i<=4; $i++) {
if($upnp_config["permuser{$i}"])
$config_text .= "{$upnp_config["permuser{$i}"]}\n";
}
if($upnp_config['permdefault'])
$config_text .= "deny 0-65535 0.0.0.0/0 0-65535\n";
/* write out the configuration */
upnp_write_config($config_file, $config_text);
/* if miniupnpd not running start it */
if(!upnp_running()) {
upnp_notice("Starting service on interface: {$ifaces_active}");
upnp_action('start');
}
/* or restart miniupnpd if settings were changed */
elseif($_POST['iface_array']) {
upnp_notice("Restarting service on interface: {$ifaces_active}");
upnp_action('restart');
}
}
}
if(!$iface_array || !$ifaces_active) {
/* no parameters user does not want miniupnpd running */
/* lets stop the service and remove the rc file */
if(file_exists($config_file)) {
if(!$upnp_config['enable'])
upnp_notice('Stopping service: miniupnpd disabled');
else
upnp_notice('Stopping service: no interfaces selected');
upnp_action('stop');
unlink($config_file);
}
}
config_unlock();
}
?>
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