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Commit 9766a61a authored by Ad Schellevis's avatar Ad Schellevis
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(legacy) code style ipsec.inc

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src/etc/inc/ipsec.inc
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<?php
/*
Copyright (C) 2007 Scott Ullrich
Copyright (C) 2008 Shrew Soft Inc
Copyright (C) 2003-2004 Manuel Kasper
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.
Copyright (C) 2007 Scott Ullrich
Copyright (C) 2008 Shrew Soft Inc
Copyright (C) 2003-2004 Manuel Kasper
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.
*/
/* IPsec defines */
$ipsec_loglevels = array("dmn" => "Daemon", "mgr" => "SA Manager", "ike" => "IKE SA", "chd" => "IKE Child SA",
"job" => "Job Processing", "cfg" => "Configuration backend", "knl" => "Kernel Interface",
"net" => "Networking", "asn" => "ASN encoding", "enc" => "Message encoding",
"imc" => "Integrity checker", "imv" => "Integrity Verifier", "pts" => "Platform Trust Service",
"tls" => "TLS handler", "esp" => "IPsec traffic", "lib" => "StrongSWAN Lib");
"job" => "Job Processing", "cfg" => "Configuration backend", "knl" => "Kernel Interface",
"net" => "Networking", "asn" => "ASN encoding", "enc" => "Message encoding",
"imc" => "Integrity checker", "imv" => "Integrity Verifier", "pts" => "Platform Trust Service",
"tls" => "TLS handler", "esp" => "IPsec traffic", "lib" => "StrongSWAN Lib"
);
$p1_ealgos = array(
'aes' => array( 'name' => 'AES', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
'aes128gcm' => array( 'name' => 'AES128-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'aes192gcm' => array( 'name' => 'AES192-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'aes256gcm' => array( 'name' => 'AES256-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'blowfish' => array( 'name' => 'Blowfish', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
'3des' => array( 'name' => '3DES' ),
'cast128' => array( 'name' => 'CAST128' ),
'des' => array( 'name' => 'DES' ));
'aes' => array( 'name' => 'AES', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
'aes128gcm' => array( 'name' => 'AES128-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'aes192gcm' => array( 'name' => 'AES192-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'aes256gcm' => array( 'name' => 'AES256-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'blowfish' => array( 'name' => 'Blowfish', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
'3des' => array( 'name' => '3DES' ),
'cast128' => array( 'name' => 'CAST128' ),
'des' => array( 'name' => 'DES' )
);
$p2_ealgos = array(
'aes' => array( 'name' => 'AES', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
'aes128gcm' => array( 'name' => 'AES128-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'aes192gcm' => array( 'name' => 'AES192-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'aes256gcm' => array( 'name' => 'AES256-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'blowfish' => array( 'name' => 'Blowfish', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
'3des' => array( 'name' => '3DES' ),
'cast128' => array( 'name' => 'CAST128' ),
'des' => array( 'name' => 'DES' ));
'aes' => array( 'name' => 'AES', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
'aes128gcm' => array( 'name' => 'AES128-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'aes192gcm' => array( 'name' => 'AES192-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'aes256gcm' => array( 'name' => 'AES256-GCM', 'keysel' => array( 'lo' => 64, 'hi' => 128, 'step' => 32 ) ),
'blowfish' => array( 'name' => 'Blowfish', 'keysel' => array( 'lo' => 128, 'hi' => 256, 'step' => 64 ) ),
'3des' => array( 'name' => '3DES' ),
'cast128' => array( 'name' => 'CAST128' ),
'des' => array( 'name' => 'DES' )
);
$p2_halgos = array(
'hmac_md5' => 'MD5',
'hmac_sha1' => 'SHA1',
'hmac_sha256' => 'SHA256',
'hmac_sha384' => 'SHA384',
'hmac_sha512' => 'SHA512',
'aesxcbc' => 'AES-XCBC'
'hmac_md5' => 'MD5',
'hmac_sha1' => 'SHA1',
'hmac_sha256' => 'SHA256',
'hmac_sha384' => 'SHA384',
'hmac_sha512' => 'SHA512',
'aesxcbc' => 'AES-XCBC'
);
$p2_protos = array(
'esp' => 'ESP',
'ah' => 'AH');
'esp' => 'ESP',
'ah' => 'AH'
);
$p2_pfskeygroups = array(
0 => 'off',
1 => '1 (768 bit)',
2 => '2 (1024 bit)',
5 => '5 (1536 bit)',
14 => '14 (2048 bit)',
15 => '15 (3072 bit)',
16 => '16 (4096 bit)',
17 => '17 (6144 bit)',
18 => '18 (8192 bit)'
0 => 'off',
1 => '1 (768 bit)',
2 => '2 (1024 bit)',
5 => '5 (1536 bit)',
14 => '14 (2048 bit)',
15 => '15 (3072 bit)',
16 => '16 (4096 bit)',
17 => '17 (6144 bit)',
18 => '18 (8192 bit)'
);
/*
* Return phase1 local address
*/
function ipsec_get_phase1_src(& $ph1ent) {
if (!empty($ph1ent['interface'])) {
if (!is_ipaddr($ph1ent['interface'])) {
if (strpos($ph1ent['interface'],'_vip') !== false) {
// if this is a vip, set the interface to $ph1ent['interface']
$if = $ph1ent['interface'];
} else {
// not a vip, check failover interface
if ($ph1ent['protocol'] == "inet6") {
$if = get_failover_interface($ph1ent['interface'], "inet6");
} else {
$if = get_failover_interface($ph1ent['interface']);
}
}
} else {
// interface is an ip address, return
return $ph1ent['interface'];
}
} else {
$if = "wan";
}
if ($ph1ent['protocol'] == "inet6") {
return get_interface_ipv6($if);
} else {
return get_interface_ip($if);
}
if (!empty($ph1ent['interface'])) {
if (!is_ipaddr($ph1ent['interface'])) {
if (strpos($ph1ent['interface'],'_vip') !== false) {
// if this is a vip, set the interface to $ph1ent['interface']
$if = $ph1ent['interface'];
} else {
// not a vip, check failover interface
if ($ph1ent['protocol'] == "inet6") {
$if = get_failover_interface($ph1ent['interface'], "inet6");
} else {
$if = get_failover_interface($ph1ent['interface']);
}
}
} else {
// interface is an ip address, return
return $ph1ent['interface'];
}
} else {
$if = "wan";
}
if ($ph1ent['protocol'] == "inet6") {
return get_interface_ipv6($if);
} else {
return get_interface_ip($if);
}
}
......@@ -117,42 +121,45 @@ function ipsec_get_phase1_src(& $ph1ent) {
* Return phase2 idinfo in cidr format
*/
function ipsec_idinfo_to_cidr(& $idinfo, $addrbits = false, $mode = "") {
global $config;
switch ($idinfo['type']) {
case "address":
if ($addrbits) {
if ($mode == "tunnel6")
return $idinfo['address']."/128";
else
return $idinfo['address']."/32";
} else
return $idinfo['address'];
break; /* NOTREACHED */
case "network":
return "{$idinfo['address']}/{$idinfo['netbits']}";
break; /* NOTREACHED */
case "none":
case "mobile":
return "0.0.0.0/0";
break; /* NOTREACHED */
default:
if (empty($mode) && !empty($idinfo['mode']))
$mode = $idinfo['mode'];
if ($mode == "tunnel6") {
$address = get_interface_ipv6($idinfo['type']);
$netbits = get_interface_subnetv6($idinfo['type']);
$address = gen_subnetv6($address,$netbits);
return "{$address}/{$netbits}";
} else {
$address = get_interface_ip($idinfo['type']);
$netbits = get_interface_subnet($idinfo['type']);
$address = gen_subnet($address,$netbits);
return "{$address}/{$netbits}";
}
break; /* NOTREACHED */
}
global $config;
switch ($idinfo['type']) {
case "address":
if ($addrbits) {
if ($mode == "tunnel6") {
return $idinfo['address']."/128";
} else {
return $idinfo['address']."/32";
}
} else {
return $idinfo['address'];
}
break; /* NOTREACHED */
case "network":
return "{$idinfo['address']}/{$idinfo['netbits']}";
break; /* NOTREACHED */
case "none":
case "mobile":
return "0.0.0.0/0";
break; /* NOTREACHED */
default:
if (empty($mode) && !empty($idinfo['mode'])) {
$mode = $idinfo['mode'];
}
if ($mode == "tunnel6") {
$address = get_interface_ipv6($idinfo['type']);
$netbits = get_interface_subnetv6($idinfo['type']);
$address = gen_subnetv6($address,$netbits);
return "{$address}/{$netbits}";
} else {
$address = get_interface_ip($idinfo['type']);
$netbits = get_interface_subnet($idinfo['type']);
$address = gen_subnet($address,$netbits);
return "{$address}/{$netbits}";
}
break; /* NOTREACHED */
}
}
......@@ -161,42 +168,43 @@ function ipsec_idinfo_to_cidr(& $idinfo, $addrbits = false, $mode = "") {
*/
function ipsec_lookup_phase1(&$ph2ent, &$ph1ent)
{
global $config;
if (!isset($config['ipsec']) || !is_array($config['ipsec'])) {
return false;
}
if (!is_array($config['ipsec']['phase1'])) {
return false;
}
if (empty($config['ipsec']['phase1'])) {
return false;
}
foreach ($config['ipsec']['phase1'] as $ph1tmp) {
if ($ph1tmp['ikeid'] == $ph2ent['ikeid']) {
$ph1ent = $ph1tmp;
return $ph1ent;
}
}
return false;
global $config;
if (!isset($config['ipsec']) || !is_array($config['ipsec'])) {
return false;
}
if (!is_array($config['ipsec']['phase1'])) {
return false;
}
if (empty($config['ipsec']['phase1'])) {
return false;
}
foreach ($config['ipsec']['phase1'] as $ph1tmp) {
if ($ph1tmp['ikeid'] == $ph2ent['ikeid']) {
$ph1ent = $ph1tmp;
return $ph1ent;
}
}
return false;
}
/*
* Check phase1 communications status
*/
function ipsec_phase1_status($ipsec_status, $ikeid) {
foreach ($ipsec_status as $ike) {
if ($ike['id'] != $ikeid)
continue;
if ($ike['status'] == 'established')
return true;
break;
}
return false;
foreach ($ipsec_status as $ike) {
if ($ike['id'] != $ikeid) {
continue;
}
if ($ike['status'] == 'established') {
return true;
}
break;
}
return false;
}
/*
......@@ -204,49 +212,53 @@ function ipsec_phase1_status($ipsec_status, $ikeid) {
*/
function ipsec_dump_spd()
{
$fd = @popen("/sbin/setkey -DP", "r");
$spd = array();
if ($fd) {
while (!feof($fd)) {
$line = chop(fgets($fd));
if (!$line)
continue;
if ($line == "No SPD entries.")
break;
if ($line[0] != "\t") {
if (isset($cursp))
$spd[] = $cursp;
$cursp = array();
$linea = explode(" ", $line);
$cursp['srcid'] = substr($linea[0], 0, strpos($linea[0], "["));
$cursp['dstid'] = substr($linea[1], 0, strpos($linea[1], "["));
$i = 0;
} else if (isset($cursp)) {
$linea = explode(" ", trim($line));
switch($i)
{
case 1:
if ($linea[1] == "none") /* don't show default anti-lockout rule */
unset($cursp);
else
$cursp['dir'] = $linea[0];
break;
case 2:
$upperspec = explode("/", $linea[0]);
$cursp['proto'] = $upperspec[0];
list($cursp['src'], $cursp['dst']) = explode("-", $upperspec[2]);
$cursp['reqid'] = substr($upperspec[3], strpos($upperspec[3], "#")+1);
break;
}
}
$i++;
}
if (isset($cursp) && count($cursp))
$spd[] = $cursp;
pclose($fd);
}
return $spd;
$fd = @popen("/sbin/setkey -DP", "r");
$spd = array();
if ($fd) {
while (!feof($fd)) {
$line = chop(fgets($fd));
if (!$line) {
continue;
}
if ($line == "No SPD entries.") {
break;
}
if ($line[0] != "\t") {
if (isset($cursp)) {
$spd[] = $cursp;
}
$cursp = array();
$linea = explode(" ", $line);
$cursp['srcid'] = substr($linea[0], 0, strpos($linea[0], "["));
$cursp['dstid'] = substr($linea[1], 0, strpos($linea[1], "["));
$i = 0;
} elseif (isset($cursp)) {
$linea = explode(" ", trim($line));
switch($i) {
case 1:
if ($linea[1] == "none") { /* don't show default anti-lockout rule */
unset($cursp);
} else {
$cursp['dir'] = $linea[0];
}
break;
case 2:
$upperspec = explode("/", $linea[0]);
$cursp['proto'] = $upperspec[0];
list($cursp['src'], $cursp['dst']) = explode("-", $upperspec[2]);
$cursp['reqid'] = substr($upperspec[3], strpos($upperspec[3], "#")+1);
break;
}
}
$i++;
}
if (isset($cursp) && count($cursp)) {
$spd[] = $cursp;
}
pclose($fd);
}
return $spd;
}
/*
......@@ -254,141 +266,135 @@ function ipsec_dump_spd()
*/
function ipsec_dump_sad()
{
$fd = @popen("/sbin/setkey -D", "r");
$sad = array();
if ($fd) {
while (!feof($fd)) {
$line = chop(fgets($fd));
if (!$line || $line[0] == " ")
continue;
if ($line == "No SAD entries.")
break;
if ($line[0] != "\t")
{
if (is_array($cursa))
$sad[] = $cursa;
$cursa = array();
list($cursa['src'],$cursa['dst']) = explode(" ", $line);
$i = 0;
}
else
{
$linea = explode(" ", trim($line));
switch ($i) {
case 1:
$cursa['proto'] = $linea[0];
$cursa['spi'] = substr($linea[2], strpos($linea[2], "x")+1, -1);
$reqid = substr($linea[3], strpos($linea[3], "=")+1);
$cursa['reqid'] = substr($reqid, 0, strcspn($reqid,"("));
break;
case 2:
$cursa['ealgo'] = $linea[1];
break;
case 3:
$cursa['aalgo'] = $linea[1];
break;
case 8:
$sadata = explode("(", $linea[1]);
$cursa['data'] = $sadata[0] . " B";
break;
}
}
$i++;
}
if (is_array($cursa) && count($cursa))
$sad[] = $cursa;
pclose($fd);
}
return $sad;
$fd = @popen("/sbin/setkey -D", "r");
$sad = array();
if ($fd) {
while (!feof($fd)) {
$line = chop(fgets($fd));
if (!$line || $line[0] == " ") {
continue;
}
if ($line == "No SAD entries.") {
break;
}
if ($line[0] != "\t") {
if (is_array($cursa)) {
$sad[] = $cursa;
}
$cursa = array();
list($cursa['src'],$cursa['dst']) = explode(" ", $line);
$i = 0;
} else {
$linea = explode(" ", trim($line));
switch ($i) {
case 1:
$cursa['proto'] = $linea[0];
$cursa['spi'] = substr($linea[2], strpos($linea[2], "x")+1, -1);
$reqid = substr($linea[3], strpos($linea[3], "=")+1);
$cursa['reqid'] = substr($reqid, 0, strcspn($reqid,"("));
break;
case 2:
$cursa['ealgo'] = $linea[1];
break;
case 3:
$cursa['aalgo'] = $linea[1];
break;
case 8:
$sadata = explode("(", $linea[1]);
$cursa['data'] = $sadata[0] . " B";
break;
}
}
$i++;
}
if (is_array($cursa) && count($cursa)) {
$sad[] = $cursa;
}
pclose($fd);
}
return $sad;
}
function ipsec_mobilekey_sort() {
global $config;
global $config;
function mobilekeycmp($a, $b) {
return strcmp($a['ident'][0], $b['ident'][0]);
}
function mobilekeycmp($a, $b) {
return strcmp($a['ident'][0], $b['ident'][0]);
}
usort($config['ipsec']['mobilekey'], "mobilekeycmp");
usort($config['ipsec']['mobilekey'], "mobilekeycmp");
}
function ipsec_get_number_of_phase2($ikeid) {
global $config;
$a_phase2 = $config['ipsec']['phase2'];
$nbph2=0;
if (is_array($a_phase2) && count($a_phase2)) {
foreach ($a_phase2 as $ph2tmp) {
if ($ph2tmp['ikeid'] == $ikeid) {
$nbph2++;
}
}
}
return $nbph2;
global $config;
$a_phase2 = $config['ipsec']['phase2'];
$nbph2=0;
if (is_array($a_phase2) && count($a_phase2)) {
foreach ($a_phase2 as $ph2tmp) {
if ($ph2tmp['ikeid'] == $ikeid) {
$nbph2++;
}
}
}
return $nbph2;
}
function ipsec_find_id(& $ph1ent, $side = "local", $rgmap = array()) {
$id_data = null;
if ($side == "local") {
$id_type = $ph1ent['myid_type'];
if (isset($ph1ent['myid_data'])) {
$id_data = $ph1ent['myid_data'];
}
$addr = ipsec_get_phase1_src($ph1ent);
if (!$addr)
return array();
} elseif ($side == "peer") {
$id_type = $ph1ent['peerid_type'];
if (isset($ph1ent['peerid_data'])) {
$id_data = $ph1ent['peerid_data'];
}
if (isset($ph1ent['mobile']))
$addr = "%any";
else
$addr = $ph1ent['remote-gateway'];
} else {
return array();
}
$thisid_type = $id_type;
switch ($thisid_type) {
case "myaddress":
$thisid_type = "address";
$thisid_data = $addr;
break;
case "dyn_dns":
$thisid_type = "address";
$thisid_data = resolve_retry($id_data);
break;
case "peeraddress":
$thisid_type = "address";
$thisid_data = $rgmap[$ph1ent['remote-gateway']];
break;
case "address";
$thisid_data = $id_data;
break;
case "fqdn";
case "keyid tag";
case "user_fqdn";
case "asn1dn";
$thisid_data = $id_data;
if( $thisid_data )
$thisid_data = "{$thisid_data}";
break;
}
return array($thisid_type, $thisid_data);
$id_data = null;
if ($side == "local") {
$id_type = $ph1ent['myid_type'];
if (isset($ph1ent['myid_data'])) {
$id_data = $ph1ent['myid_data'];
}
$addr = ipsec_get_phase1_src($ph1ent);
if (!$addr) {
return array();
}
} elseif ($side == "peer") {
$id_type = $ph1ent['peerid_type'];
if (isset($ph1ent['peerid_data'])) {
$id_data = $ph1ent['peerid_data'];
}
if (isset($ph1ent['mobile'])) {
$addr = "%any";
} else {
$addr = $ph1ent['remote-gateway'];
}
} else {
return array();
}
$thisid_type = $id_type;
switch ($thisid_type) {
case "myaddress":
$thisid_type = "address";
$thisid_data = $addr;
break;
case "dyn_dns":
$thisid_type = "address";
$thisid_data = resolve_retry($id_data);
break;
case "peeraddress":
$thisid_type = "address";
$thisid_data = $rgmap[$ph1ent['remote-gateway']];
break;
case "address";
$thisid_data = $id_data;
break;
case "fqdn";
case "keyid tag";
case "user_fqdn";
case "asn1dn";
$thisid_data = $id_data;
if( $thisid_data ) {
$thisid_data = "{$thisid_data}";
}
break;
}
return array($thisid_type, $thisid_data);
}
?>
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