diff options
| -rw-r--r-- | etc/inc/vpn.inc | 244 |
1 files changed, 137 insertions, 107 deletions
diff --git a/etc/inc/vpn.inc b/etc/inc/vpn.inc index b73af46..7d7d65f 100644 --- a/etc/inc/vpn.inc +++ b/etc/inc/vpn.inc @@ -2,20 +2,20 @@ /* vpn.inc part of m0n0wall (http://m0n0.ch/wall) - + Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>. 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 @@ -27,121 +27,151 @@ 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 find_last_gif_device() { + $last_gif_found = -1; + if (!($fp = popen("/sbin/ifconfig -l", "r"))) return -1; + $ifconfig_data = fread($fp, 4096); + pclose($fp); + $ifconfig_array = split(" ", $ifconfig_data); + foreach ($ifconfig_array as $ifconfig) { + echo $ifconfig . "\n"; + ereg("gif(.)", $ifconfig, $regs); + if($regs[0]) { + if($regs[0] > $last_gif_found) + $last_gif_found = $regs[1]; + } + } + return $last_gif_found; +} + function vpn_ipsec_configure($ipchg = false) { global $config, $g; - + + $number_of_gifs = find_last_gif_device(); + for($x=0; $x<$number_of_gifs; $x++) { + mwexec("/sbin/ifconfig gif" . $x . " delete"); + } + $curwanip = get_current_wan_address(); - + $syscfg = $config['system']; $ipseccfg = $config['ipsec']; $lancfg = $config['interfaces']['lan']; $lanip = $lancfg['ipaddr']; $lansa = gen_subnet($lancfg['ipaddr'], $lancfg['subnet']); $lansn = $lancfg['subnet']; - + if ($g['booting']) { if (!isset($ipseccfg['enable'])) return 0; - + echo "Configuring IPsec VPN... "; } else { /* kill racoon */ killbypid("{$g['varrun_path']}/racoon.pid"); - + /* wait for process to die */ sleep(2); - + /* send a SIGKILL to be sure */ sigkillbypid("{$g['varrun_path']}/racoon.pid", "KILL"); } - + /* flush SPD and SAD */ mwexec("/usr/sbin/setkey -FP"); mwexec("/usr/sbin/setkey -F"); - + /* prefer old SAs only for 30 seconds, then use the new one */ mwexec("/sbin/sysctl -w net.key.preferred_oldsa=-30"); - + if (isset($ipseccfg['enable'])) { - + if (!$curwanip) { /* IP address not configured yet, exit */ if ($g['booting']) echo "done\n"; return 0; } - + if ((is_array($ipseccfg['tunnel']) && count($ipseccfg['tunnel'])) || isset($ipseccfg['mobileclients']['enable'])) { - + if (is_array($ipseccfg['tunnel']) && count($ipseccfg['tunnel'])) { - + /* generate spd.conf */ $fd = fopen("{$g['varetc_path']}/spd.conf", "w"); if (!$fd) { printf("Error: cannot open spd.conf in vpn_ipsec_configure().\n"); return 1; } - + $spdconf = ""; - + $spdconf .= "spdadd {$lansa}/{$lansn} {$lanip}/32 any -P in none;\n"; $spdconf .= "spdadd {$lanip}/32 {$lansa}/{$lansn} any -P out none;\n"; - + foreach ($ipseccfg['tunnel'] as $tunnel) { - + if (isset($tunnel['disabled'])) continue; - + $ep = vpn_endpoint_determine($tunnel, $curwanip); if (!$ep) continue; - + vpn_localnet_determine($tunnel['local-subnet'], $sa, $sn); - - $spdconf .= "spdadd {$sa}/{$sn} " . - "{$tunnel['remote-subnet']} any -P out ipsec " . + + if(isset($tunnel['creategif'])) { + $number_of_gifs = find_last_gif_device(); + $number_of_gifs++; + $curwanip = get_current_wan_address(); + mwexec("/sbin/ifconfig gif" . $number_of_gifs . " tunnel" . $curwanip . " " . $tunnel['remote-gateway']); + mwexec("/sbin/ifconfig gif" . $number_of_gifs . " {$lansa}/{$lansn} {$lanip}/32"); + } + + $spdconf .= "spdadd {$sa}/{$sn} " . + "{$tunnel['remote-subnet']} any -P out ipsec " . "{$tunnel['p2']['protocol']}/tunnel/{$ep}-" . "{$tunnel['remote-gateway']}/unique;\n"; - - $spdconf .= "spdadd {$tunnel['remote-subnet']} " . - "{$sa}/{$sn} any -P in ipsec " . + + $spdconf .= "spdadd {$tunnel['remote-subnet']} " . + "{$sa}/{$sn} any -P in ipsec " . "{$tunnel['p2']['protocol']}/tunnel/{$tunnel['remote-gateway']}-" . "{$ep}/unique;\n"; } - + fwrite($fd, $spdconf); fclose($fd); - + /* load SPD */ mwexec("/usr/sbin/setkey -c < {$g['varetc_path']}/spd.conf"); } - + /* generate racoon.conf */ $fd = fopen("{$g['varetc_path']}/racoon.conf", "w"); if (!$fd) { printf("Error: cannot open racoon.conf in vpn_ipsec_configure().\n"); return 1; } - + $racoonconf = "path pre_shared_key \"{$g['varetc_path']}/psk.txt\";\n\n"; - + if (is_array($ipseccfg['tunnel']) && count($ipseccfg['tunnel'])) foreach ($ipseccfg['tunnel'] as $tunnel) { - + if (isset($tunnel['disabled'])) continue; - + $ep = vpn_endpoint_determine($tunnel, $curwanip); if (!$ep) continue; - + vpn_localnet_determine($tunnel['local-subnet'], $sa, $sn); - + if (isset($tunnel['p1']['myident']['myaddress'])) { $myidentt = "address"; $myident = $ep; @@ -155,7 +185,7 @@ function vpn_ipsec_configure($ipchg = false) { $myidentt = "user_fqdn"; $myident = $tunnel['p1']['myident']['ufqdn']; } - + $racoonconf .= <<<EOD remote {$tunnel['remote-gateway']} \{ exchange_mode {$tunnel['p1']['mode']}; @@ -174,17 +204,17 @@ remote {$tunnel['remote-gateway']} \{ EOD; if ($tunnel['p1']['lifetime']) $racoonconf .= " lifetime time {$tunnel['p1']['lifetime']} secs;\n"; - + $racoonconf .= " }\n"; - + if ($tunnel['p1']['lifetime']) $racoonconf .= " lifetime time {$tunnel['p1']['lifetime']} secs;\n"; - + $racoonconf .= "}\n\n"; - + $p2ealgos = join(",", $tunnel['p2']['encryption-algorithm-option']); $p2halgos = join(",", $tunnel['p2']['hash-algorithm-option']); - + $racoonconf .= <<<EOD sainfo address {$sa}/{$sn} any address {$tunnel['remote-subnet']} any \{ encryption_algorithm {$p2ealgos}; @@ -195,18 +225,18 @@ EOD; if ($tunnel['p2']['pfsgroup']) $racoonconf .= " pfs_group {$tunnel['p2']['pfsgroup']};\n"; - + if ($tunnel['p2']['lifetime']) $racoonconf .= " lifetime time {$tunnel['p2']['lifetime']} secs;\n"; - + $racoonconf .= "}\n\n"; } - + /* mobile clients? */ if (isset($ipseccfg['mobileclients']['enable'])) { - + $tunnel = $ipseccfg['mobileclients']; - + if (isset($tunnel['p1']['myident']['myaddress'])) { $myidentt = "address"; $myident = $curwanip; @@ -220,7 +250,7 @@ EOD; $myidentt = "user_fqdn"; $myident = $tunnel['p1']['myident']['ufqdn']; } - + $racoonconf .= <<<EOD remote anonymous \{ exchange_mode {$tunnel['p1']['mode']}; @@ -240,17 +270,17 @@ remote anonymous \{ EOD; if ($tunnel['p1']['lifetime']) $racoonconf .= " lifetime time {$tunnel['p1']['lifetime']} secs;\n"; - + $racoonconf .= " }\n"; - + if ($tunnel['p1']['lifetime']) $racoonconf .= " lifetime time {$tunnel['p1']['lifetime']} secs;\n"; - + $racoonconf .= "}\n\n"; - + $p2ealgos = join(",", $tunnel['p2']['encryption-algorithm-option']); $p2halgos = join(",", $tunnel['p2']['hash-algorithm-option']); - + $racoonconf .= <<<EOD sainfo anonymous \{ encryption_algorithm {$p2ealgos}; @@ -261,25 +291,25 @@ EOD; if ($tunnel['p2']['pfsgroup']) $racoonconf .= " pfs_group {$tunnel['p2']['pfsgroup']};\n"; - + if ($tunnel['p2']['lifetime']) $racoonconf .= " lifetime time {$tunnel['p2']['lifetime']} secs;\n"; - + $racoonconf .= "}\n\n"; } - + fwrite($fd, $racoonconf); fclose($fd); - + /* generate psk.txt */ $fd = fopen("{$g['varetc_path']}/psk.txt", "w"); if (!$fd) { printf("Error: cannot open psk.txt in vpn_ipsec_configure().\n"); return 1; } - + $pskconf = ""; - + if (is_array($ipseccfg['tunnel'])) { foreach ($ipseccfg['tunnel'] as $tunnel) { if (isset($tunnel['disabled'])) @@ -287,21 +317,21 @@ EOD; $pskconf .= "{$tunnel['remote-gateway']} {$tunnel['p1']['pre-shared-key']}\n"; } } - + /* add PSKs for mobile clients */ if (is_array($ipseccfg['mobilekey'])) { foreach ($ipseccfg['mobilekey'] as $key) { $pskconf .= "{$key['ident']} {$key['pre-shared-key']}\n"; } } - + fwrite($fd, $pskconf); fclose($fd); chmod("{$g['varetc_path']}/psk.txt", 0600); - + /* start racoon */ mwexec("/usr/local/sbin/racoon -d -f {$g['varetc_path']}/racoon.conf"); - + foreach ($ipseccfg['tunnel'] as $tunnel) { if (isset($tunnel['auto'])) { $remotehost = substr($tunnel['remote-subnet'],0,strpos($tunnel['remote-subnet'],"/")); @@ -312,57 +342,57 @@ EOD; } } } - + if (!$g['booting']) { /* reload the filter */ filter_configure(); } - + if ($g['booting']) echo "done\n"; - + return 0; } function vpn_pptpd_configure() { global $config, $g; - + $syscfg = $config['system']; $pptpdcfg = $config['pptpd']; - + if ($g['booting']) { if (!$pptpdcfg['mode'] || ($pptpdcfg['mode'] == "off")) return 0; - + echo "Configuring PPTP VPN service... "; - } else { + } else { /* kill mpd */ killbypid("{$g['varrun_path']}/mpd-vpn.pid"); - + /* wait for process to die */ sleep(2); - + /* remove mpd.conf, if it exists */ unlink_if_exists("{$g['varetc_path']}/mpd-vpn/mpd.conf"); unlink_if_exists("{$g['varetc_path']}/mpd-vpn/mpd.links"); unlink_if_exists("{$g['varetc_path']}/mpd-vpn/mpd.secret"); } - + /* make sure mpd-vpn directory exists */ if (!file_exists("{$g['varetc_path']}/mpd-vpn")) mkdir("{$g['varetc_path']}/mpd-vpn"); - + switch ($pptpdcfg['mode']) { - + case 'server': - + /* write mpd.conf */ $fd = fopen("{$g['varetc_path']}/mpd-vpn/mpd.conf", "w"); if (!$fd) { printf("Error: cannot open mpd.conf in vpn_pptpd_configure().\n"); return 1; } - + $mpdconf = <<<EOD pptpd: @@ -371,12 +401,12 @@ EOD; for ($i = 0; $i < $g['n_pptp_units']; $i++) { $mpdconf .= " load pt{$i}\n"; } - + for ($i = 0; $i < $g['n_pptp_units']; $i++) { - + $clientip = long2ip(ip2long($pptpdcfg['remoteip']) + $i); $ngif = "ng" . ($i+1); - + $mpdconf .= <<<EOD pt{$i}: @@ -386,7 +416,7 @@ pt{$i}: EOD; } - + $mpdconf .= <<<EOD pts: @@ -410,7 +440,7 @@ pts: set ccp yes mpp-stateless EOD; - + if (!isset($pptpdcfg['req128'])) { $mpdconf .= <<<EOD set ccp yes mpp-e40 @@ -418,7 +448,7 @@ EOD; EOD; } - + if (isset($config['dnsmasq']['enable'])) { $mpdconf .= " set ipcp dns " . $config['interfaces']['lan']['ipaddr']; if ($syscfg['dnsserver'][0]) @@ -427,7 +457,7 @@ EOD; } else if (is_array($syscfg['dnsserver']) && ($syscfg['dnsserver'][0])) { $mpdconf .= " set ipcp dns " . join(" ", $syscfg['dnsserver']) . "\n"; } - + if (isset($pptpdcfg['radius']['enable'])) { $mpdconf .= <<<EOD set radius server {$pptpdcfg['radius']['server']} "{$pptpdcfg['radius']['secret']}" @@ -448,16 +478,16 @@ EOD; fwrite($fd, $mpdconf); fclose($fd); - + /* write mpd.links */ $fd = fopen("{$g['varetc_path']}/mpd-vpn/mpd.links", "w"); if (!$fd) { printf("Error: cannot open mpd.links in vpn_pptpd_configure().\n"); return 1; } - + $mpdlinks = ""; - + for ($i = 0; $i < $g['n_pptp_units']; $i++) { $mpdlinks .= <<<EOD @@ -473,16 +503,16 @@ EOD; fwrite($fd, $mpdlinks); fclose($fd); - + /* write mpd.secret */ $fd = fopen("{$g['varetc_path']}/mpd-vpn/mpd.secret", "w"); if (!$fd) { printf("Error: cannot open mpd.secret in vpn_pptpd_configure().\n"); return 1; } - + $mpdsecret = ""; - + if (is_array($pptpdcfg['user'])) { foreach ($pptpdcfg['user'] as $user) $mpdsecret .= "{$user['name']} \"{$user['password']}\" {$user['ip']}\n"; @@ -491,24 +521,24 @@ EOD; fwrite($fd, $mpdsecret); fclose($fd); chmod("{$g['varetc_path']}/mpd-vpn/mpd.secret", 0600); - + /* fire up mpd */ mwexec("/usr/local/sbin/mpd -b -d {$g['varetc_path']}/mpd-vpn -p {$g['varrun_path']}/mpd-vpn.pid pptpd"); - + break; - + case 'redir': break; } - + if (!$g['booting']) { /* reload the filter */ filter_configure(); } - + if ($g['booting']) echo "done\n"; - + return 0; } @@ -516,7 +546,7 @@ function vpn_localnet_determine($adr, &$sa, &$sn) { global $config, $g; if (isset($adr)) { - if ($adr['network']) { + if ($adr['network']) { switch ($adr['network']) { case 'lan': $sn = $config['interfaces']['lan']['subnet']; @@ -535,9 +565,9 @@ function vpn_localnet_determine($adr, &$sa, &$sn) { } function vpn_endpoint_determine($tunnel, $curwanip) { - + global $g, $config; - + if ((!$tunnel['interface']) || ($tunnel['interface'] == "wan")) { if ($curwanip) return $curwanip; @@ -547,13 +577,13 @@ function vpn_endpoint_determine($tunnel, $curwanip) { return $config['interfaces']['lan']['ipaddr']; } else { $oc = $config['interfaces'][$tunnel['interface']]; - + if (isset($oc['enable']) && $oc['if']) { return $oc['ipaddr']; } } - + return null; } - + ?> |
