944 lines
25 KiB
C
944 lines
25 KiB
C
/*
|
|
* Copyright (C) 2017 Lubomir Rintel
|
|
*
|
|
* Copyright (C) 2013-2019 Tobias Brunner
|
|
* Copyright (C) 2008-2009 Martin Willi
|
|
* HSR Hochschule fuer Technik Rapperswil
|
|
*
|
|
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*/
|
|
|
|
#include "nm_service.h"
|
|
|
|
#include <daemon.h>
|
|
#include <networking/host.h>
|
|
#include <utils/identification.h>
|
|
#include <config/peer_cfg.h>
|
|
#include <credentials/certificates/x509.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
/**
|
|
* Private data of NMStrongswanPlugin
|
|
*/
|
|
typedef struct {
|
|
/* implements bus listener interface */
|
|
listener_t listener;
|
|
/* IKE_SA we are listening on */
|
|
ike_sa_t *ike_sa;
|
|
/* backref to public plugin */
|
|
NMVpnServicePlugin *plugin;
|
|
/* credentials to use for authentication */
|
|
nm_creds_t *creds;
|
|
/* attribute handler for DNS/NBNS server information */
|
|
nm_handler_t *handler;
|
|
/* name of the connection */
|
|
char *name;
|
|
} NMStrongswanPluginPrivate;
|
|
|
|
G_DEFINE_TYPE_WITH_PRIVATE(NMStrongswanPlugin, nm_strongswan_plugin, NM_TYPE_VPN_SERVICE_PLUGIN)
|
|
|
|
#define NM_STRONGSWAN_PLUGIN_GET_PRIVATE(o) \
|
|
((NMStrongswanPluginPrivate*) \
|
|
nm_strongswan_plugin_get_instance_private (o))
|
|
|
|
/**
|
|
* Convert an address chunk to a GValue
|
|
*/
|
|
static GVariant *addr_to_variant(chunk_t addr)
|
|
{
|
|
GVariantBuilder builder;
|
|
int i;
|
|
|
|
switch (addr.len)
|
|
{
|
|
case 4:
|
|
return g_variant_new_uint32 (*(uint32_t*)addr.ptr);
|
|
case 16:
|
|
g_variant_builder_init (&builder, G_VARIANT_TYPE ("ay"));
|
|
for (i = 0; i < addr.len; i++)
|
|
{
|
|
g_variant_builder_add (&builder, "y", addr.ptr[i]);
|
|
|
|
}
|
|
return g_variant_builder_end (&builder);
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Convert a host to a GValue
|
|
*/
|
|
static GVariant *host_to_variant(host_t *host)
|
|
{
|
|
return addr_to_variant(host->get_address(host));
|
|
}
|
|
|
|
/**
|
|
* Convert enumerated handler chunks to a GValue
|
|
*/
|
|
static GVariant* handler_to_variant(nm_handler_t *handler, char *variant_type,
|
|
configuration_attribute_type_t type)
|
|
{
|
|
GVariantBuilder builder;
|
|
enumerator_t *enumerator;
|
|
chunk_t *chunk;
|
|
|
|
g_variant_builder_init (&builder, G_VARIANT_TYPE (variant_type));
|
|
|
|
enumerator = handler->create_enumerator(handler, type);
|
|
while (enumerator->enumerate(enumerator, &chunk))
|
|
{
|
|
g_variant_builder_add_value (&builder, addr_to_variant(*chunk));
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
return g_variant_builder_end (&builder);
|
|
}
|
|
|
|
/**
|
|
* Signal IP config to NM, set connection as established
|
|
*/
|
|
static void signal_ip_config(NMVpnServicePlugin *plugin,
|
|
ike_sa_t *ike_sa, child_sa_t *child_sa)
|
|
{
|
|
NMStrongswanPlugin *pub = (NMStrongswanPlugin*)plugin;
|
|
NMStrongswanPluginPrivate *priv = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(pub);
|
|
GVariantBuilder builder, ip4builder, ip6builder;
|
|
GVariant *ip4config, *ip6config;
|
|
enumerator_t *enumerator;
|
|
host_t *me, *other, *vip4 = NULL, *vip6 = NULL;
|
|
nm_handler_t *handler;
|
|
|
|
g_variant_builder_init (&builder, G_VARIANT_TYPE_VARDICT);
|
|
g_variant_builder_init (&ip4builder, G_VARIANT_TYPE_VARDICT);
|
|
g_variant_builder_init (&ip6builder, G_VARIANT_TYPE_VARDICT);
|
|
|
|
handler = priv->handler;
|
|
|
|
/* NM apparently requires to know the gateway */
|
|
other = ike_sa->get_other_host(ike_sa);
|
|
g_variant_builder_add (&builder, "{sv}", NM_VPN_PLUGIN_CONFIG_EXT_GATEWAY,
|
|
host_to_variant(other));
|
|
|
|
/* pass the first virtual IPs we got or use the physical IP */
|
|
enumerator = ike_sa->create_virtual_ip_enumerator(ike_sa, TRUE);
|
|
while (enumerator->enumerate(enumerator, &me))
|
|
{
|
|
switch (me->get_family(me))
|
|
{
|
|
case AF_INET:
|
|
if (!vip4)
|
|
{
|
|
vip4 = me;
|
|
}
|
|
break;
|
|
case AF_INET6:
|
|
if (!vip6)
|
|
{
|
|
vip6 = me;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
if (!vip4 && !vip6)
|
|
{
|
|
me = ike_sa->get_my_host(ike_sa);
|
|
switch (me->get_family(me))
|
|
{
|
|
case AF_INET:
|
|
vip4 = me;
|
|
break;
|
|
case AF_INET6:
|
|
vip6 = me;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (vip4)
|
|
{
|
|
g_variant_builder_add (&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_ADDRESS,
|
|
host_to_variant(vip4));
|
|
g_variant_builder_add (&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_PREFIX,
|
|
g_variant_new_uint32 (vip4->get_address(vip4).len * 8));
|
|
|
|
/* prevent NM from changing the default route. we set our own route in our
|
|
* own routing table
|
|
*/
|
|
g_variant_builder_add (&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_NEVER_DEFAULT,
|
|
g_variant_new_boolean (TRUE));
|
|
|
|
g_variant_builder_add (&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_DNS,
|
|
handler_to_variant(handler, "au", INTERNAL_IP4_DNS));
|
|
|
|
g_variant_builder_add (&ip4builder, "{sv}", NM_VPN_PLUGIN_IP4_CONFIG_NBNS,
|
|
handler_to_variant(handler, "au", INTERNAL_IP4_NBNS));
|
|
}
|
|
|
|
if (vip6)
|
|
{
|
|
g_variant_builder_add (&ip6builder, "{sv}", NM_VPN_PLUGIN_IP6_CONFIG_ADDRESS,
|
|
host_to_variant(vip6));
|
|
g_variant_builder_add (&ip6builder, "{sv}", NM_VPN_PLUGIN_IP6_CONFIG_PREFIX,
|
|
g_variant_new_uint32 (vip6->get_address(vip6).len * 8));
|
|
g_variant_builder_add (&ip6builder, "{sv}", NM_VPN_PLUGIN_IP6_CONFIG_NEVER_DEFAULT,
|
|
g_variant_new_boolean (TRUE));
|
|
g_variant_builder_add (&ip6builder, "{sv}", NM_VPN_PLUGIN_IP6_CONFIG_DNS,
|
|
handler_to_variant(handler, "aay", INTERNAL_IP6_DNS));
|
|
/* NM_VPN_PLUGIN_IP6_CONFIG_NBNS is not defined */
|
|
}
|
|
|
|
ip4config = g_variant_builder_end (&ip4builder);
|
|
if (g_variant_n_children (ip4config))
|
|
{
|
|
g_variant_builder_add (&builder, "{sv}", NM_VPN_PLUGIN_CONFIG_HAS_IP4,
|
|
g_variant_new_boolean (TRUE));
|
|
}
|
|
else
|
|
{
|
|
g_variant_unref (ip4config);
|
|
ip4config = NULL;
|
|
}
|
|
|
|
ip6config = g_variant_builder_end (&ip6builder);
|
|
if (g_variant_n_children (ip6config))
|
|
{
|
|
g_variant_builder_add (&builder, "{sv}", NM_VPN_PLUGIN_CONFIG_HAS_IP6,
|
|
g_variant_new_boolean (TRUE));
|
|
}
|
|
else
|
|
{
|
|
g_variant_unref (ip6config);
|
|
ip6config = NULL;
|
|
}
|
|
|
|
handler->reset(handler);
|
|
|
|
nm_vpn_service_plugin_set_config (plugin, g_variant_builder_end (&builder));
|
|
if (ip4config)
|
|
{
|
|
nm_vpn_service_plugin_set_ip4_config (plugin, ip4config);
|
|
}
|
|
if (ip6config)
|
|
{
|
|
nm_vpn_service_plugin_set_ip6_config (plugin, ip6config);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* signal failure to NM, connecting failed
|
|
*/
|
|
static void signal_failure(NMVpnServicePlugin *plugin, NMVpnPluginFailure failure)
|
|
{
|
|
NMStrongswanPlugin *pub = (NMStrongswanPlugin*)plugin;
|
|
nm_handler_t *handler = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(pub)->handler;
|
|
|
|
handler->reset(handler);
|
|
|
|
nm_vpn_service_plugin_failure(plugin, failure);
|
|
}
|
|
|
|
/**
|
|
* Implementation of listener_t.ike_state_change
|
|
*/
|
|
static bool ike_state_change(listener_t *listener, ike_sa_t *ike_sa,
|
|
ike_sa_state_t state)
|
|
{
|
|
NMStrongswanPluginPrivate *private = (NMStrongswanPluginPrivate*)listener;
|
|
|
|
if (private->ike_sa == ike_sa && state == IKE_DESTROYING)
|
|
{
|
|
signal_failure(private->plugin, NM_VPN_PLUGIN_FAILURE_LOGIN_FAILED);
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Implementation of listener_t.child_state_change
|
|
*/
|
|
static bool child_state_change(listener_t *listener, ike_sa_t *ike_sa,
|
|
child_sa_t *child_sa, child_sa_state_t state)
|
|
{
|
|
NMStrongswanPluginPrivate *private = (NMStrongswanPluginPrivate*)listener;
|
|
|
|
if (private->ike_sa == ike_sa && state == CHILD_DESTROYING)
|
|
{
|
|
signal_failure(private->plugin, NM_VPN_PLUGIN_FAILURE_CONNECT_FAILED);
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Implementation of listener_t.child_updown
|
|
*/
|
|
static bool child_updown(listener_t *listener, ike_sa_t *ike_sa,
|
|
child_sa_t *child_sa, bool up)
|
|
{
|
|
NMStrongswanPluginPrivate *private = (NMStrongswanPluginPrivate*)listener;
|
|
|
|
if (private->ike_sa == ike_sa)
|
|
{
|
|
if (up)
|
|
{ /* disable initiate-failure-detection hooks */
|
|
private->listener.ike_state_change = NULL;
|
|
private->listener.child_state_change = NULL;
|
|
signal_ip_config(private->plugin, ike_sa, child_sa);
|
|
}
|
|
else
|
|
{
|
|
signal_failure(private->plugin, NM_VPN_PLUGIN_FAILURE_CONNECT_FAILED);
|
|
return FALSE;
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Implementation of listener_t.ike_rekey
|
|
*/
|
|
static bool ike_rekey(listener_t *listener, ike_sa_t *old, ike_sa_t *new)
|
|
{
|
|
NMStrongswanPluginPrivate *private = (NMStrongswanPluginPrivate*)listener;
|
|
|
|
if (private->ike_sa == old)
|
|
{ /* follow a rekeyed IKE_SA */
|
|
private->ike_sa = new;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Find a certificate for which we have a private key on a smartcard
|
|
*/
|
|
static identification_t *find_smartcard_key(NMStrongswanPluginPrivate *priv,
|
|
char *pin)
|
|
{
|
|
enumerator_t *enumerator, *sans;
|
|
identification_t *id = NULL;
|
|
certificate_t *cert;
|
|
x509_t *x509;
|
|
private_key_t *key;
|
|
chunk_t keyid;
|
|
|
|
enumerator = lib->credmgr->create_cert_enumerator(lib->credmgr,
|
|
CERT_X509, KEY_ANY, NULL, FALSE);
|
|
while (enumerator->enumerate(enumerator, &cert))
|
|
{
|
|
x509 = (x509_t*)cert;
|
|
|
|
/* there might be a lot of certificates, filter them by usage */
|
|
if ((x509->get_flags(x509) & X509_CLIENT_AUTH) &&
|
|
!(x509->get_flags(x509) & X509_CA))
|
|
{
|
|
keyid = x509->get_subjectKeyIdentifier(x509);
|
|
if (keyid.ptr)
|
|
{
|
|
/* try to find a private key by the certificate keyid */
|
|
priv->creds->set_pin(priv->creds, keyid, pin);
|
|
key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY,
|
|
KEY_ANY, BUILD_PKCS11_KEYID, keyid, BUILD_END);
|
|
if (key)
|
|
{
|
|
/* prefer a more convenient subjectAltName */
|
|
sans = x509->create_subjectAltName_enumerator(x509);
|
|
if (!sans->enumerate(sans, &id))
|
|
{
|
|
id = cert->get_subject(cert);
|
|
}
|
|
id = id->clone(id);
|
|
sans->destroy(sans);
|
|
|
|
DBG1(DBG_CFG, "using smartcard certificate '%Y'", id);
|
|
priv->creds->set_cert_and_key(priv->creds,
|
|
cert->get_ref(cert), key);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
return id;
|
|
}
|
|
|
|
/**
|
|
* Connect function called from NM via DBUS
|
|
*/
|
|
static gboolean connect_(NMVpnServicePlugin *plugin, NMConnection *connection,
|
|
GError **err)
|
|
{
|
|
NMStrongswanPlugin *pub = (NMStrongswanPlugin*)plugin;
|
|
NMStrongswanPluginPrivate *priv;
|
|
NMSettingConnection *conn;
|
|
NMSettingVpn *vpn;
|
|
enumerator_t *enumerator;
|
|
identification_t *user = NULL, *gateway = NULL;
|
|
const char *str;
|
|
bool virtual, proposal;
|
|
proposal_t *prop;
|
|
ike_cfg_t *ike_cfg;
|
|
peer_cfg_t *peer_cfg;
|
|
child_cfg_t *child_cfg;
|
|
traffic_selector_t *ts;
|
|
ike_sa_t *ike_sa;
|
|
auth_cfg_t *auth;
|
|
auth_class_t auth_class = AUTH_CLASS_EAP;
|
|
certificate_t *cert = NULL;
|
|
x509_t *x509;
|
|
bool agent = FALSE, smartcard = FALSE, loose_gateway_id = FALSE;
|
|
ike_cfg_create_t ike = {
|
|
.version = IKEV2,
|
|
.local = "%any",
|
|
.local_port = charon->socket->get_port(charon->socket, FALSE),
|
|
.remote_port = IKEV2_UDP_PORT,
|
|
.fragmentation = FRAGMENTATION_YES,
|
|
};
|
|
peer_cfg_create_t peer = {
|
|
.cert_policy = CERT_SEND_IF_ASKED,
|
|
.unique = UNIQUE_REPLACE,
|
|
.keyingtries = 1,
|
|
.rekey_time = 36000, /* 10h */
|
|
.jitter_time = 600, /* 10min */
|
|
.over_time = 600, /* 10min */
|
|
};
|
|
child_cfg_create_t child = {
|
|
.lifetime = {
|
|
.time = {
|
|
.life = 10800 /* 3h */,
|
|
.rekey = 10200 /* 2h50min */,
|
|
.jitter = 300 /* 5min */
|
|
},
|
|
},
|
|
.mode = MODE_TUNNEL,
|
|
};
|
|
|
|
/**
|
|
* Read parameters
|
|
*/
|
|
priv = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(pub);
|
|
conn = NM_SETTING_CONNECTION(nm_connection_get_setting(connection,
|
|
NM_TYPE_SETTING_CONNECTION));
|
|
vpn = NM_SETTING_VPN(nm_connection_get_setting(connection,
|
|
NM_TYPE_SETTING_VPN));
|
|
if (priv->name)
|
|
{
|
|
free(priv->name);
|
|
}
|
|
priv->name = strdup(nm_setting_connection_get_id(conn));
|
|
DBG1(DBG_CFG, "received initiate for NetworkManager connection %s",
|
|
priv->name);
|
|
DBG4(DBG_CFG, "%s",
|
|
nm_setting_to_string(NM_SETTING(vpn)));
|
|
ike.remote = (char*)nm_setting_vpn_get_data_item(vpn, "address");
|
|
if (!ike.remote || !*ike.remote)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS,
|
|
"Gateway address missing.");
|
|
return FALSE;
|
|
}
|
|
str = nm_setting_vpn_get_data_item(vpn, "virtual");
|
|
virtual = streq(str, "yes");
|
|
str = nm_setting_vpn_get_data_item(vpn, "encap");
|
|
ike.force_encap = streq(str, "yes");
|
|
str = nm_setting_vpn_get_data_item(vpn, "ipcomp");
|
|
child.options |= streq(str, "yes") ? OPT_IPCOMP : 0;
|
|
str = nm_setting_vpn_get_data_item(vpn, "method");
|
|
if (streq(str, "psk"))
|
|
{
|
|
auth_class = AUTH_CLASS_PSK;
|
|
}
|
|
else if (streq(str, "agent"))
|
|
{
|
|
auth_class = AUTH_CLASS_PUBKEY;
|
|
agent = TRUE;
|
|
}
|
|
else if (streq(str, "key"))
|
|
{
|
|
auth_class = AUTH_CLASS_PUBKEY;
|
|
}
|
|
else if (streq(str, "smartcard"))
|
|
{
|
|
auth_class = AUTH_CLASS_PUBKEY;
|
|
smartcard = TRUE;
|
|
}
|
|
|
|
/**
|
|
* Register credentials
|
|
*/
|
|
priv->creds->clear(priv->creds);
|
|
|
|
/* gateway/CA cert */
|
|
str = nm_setting_vpn_get_data_item(vpn, "certificate");
|
|
if (str)
|
|
{
|
|
cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509,
|
|
BUILD_FROM_FILE, str, BUILD_END);
|
|
if (!cert)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR,
|
|
NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS,
|
|
"Loading gateway certificate failed.");
|
|
return FALSE;
|
|
}
|
|
priv->creds->add_certificate(priv->creds, cert);
|
|
|
|
x509 = (x509_t*)cert;
|
|
if (!(x509->get_flags(x509) & X509_CA))
|
|
{ /* For a gateway certificate, we use the cert subject as identity. */
|
|
gateway = cert->get_subject(cert);
|
|
gateway = gateway->clone(gateway);
|
|
DBG1(DBG_CFG, "using gateway certificate, identity '%Y'", gateway);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* no certificate defined, fall back to system-wide CA certificates */
|
|
priv->creds->load_ca_dir(priv->creds, lib->settings->get_str(
|
|
lib->settings, "charon-nm.ca_dir", NM_CA_DIR));
|
|
}
|
|
if (!gateway)
|
|
{
|
|
/* If the user configured a CA certificate, we use the IP/DNS
|
|
* of the gateway as its identity. This identity will be used for
|
|
* certificate lookup and requires the configured IP/DNS to be
|
|
* included in the gateway certificate. */
|
|
gateway = identification_create_from_string(ike.remote);
|
|
DBG1(DBG_CFG, "using CA certificate, gateway identity '%Y'", gateway);
|
|
loose_gateway_id = TRUE;
|
|
}
|
|
|
|
if (auth_class == AUTH_CLASS_EAP ||
|
|
auth_class == AUTH_CLASS_PSK)
|
|
{
|
|
/* username/password or PSK authentication ... */
|
|
str = nm_setting_vpn_get_data_item(vpn, "user");
|
|
if (str)
|
|
{
|
|
user = identification_create_from_string((char*)str);
|
|
str = nm_setting_vpn_get_secret(vpn, "password");
|
|
if (auth_class == AUTH_CLASS_PSK &&
|
|
strlen(str) < 20)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR,
|
|
NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS,
|
|
"pre-shared key is too short.");
|
|
gateway->destroy(gateway);
|
|
user->destroy(user);
|
|
return FALSE;
|
|
}
|
|
priv->creds->set_username_password(priv->creds, user, (char*)str);
|
|
}
|
|
}
|
|
|
|
if (auth_class == AUTH_CLASS_PUBKEY)
|
|
{
|
|
if (smartcard)
|
|
{
|
|
char *pin;
|
|
|
|
pin = (char*)nm_setting_vpn_get_secret(vpn, "password");
|
|
if (pin)
|
|
{
|
|
user = find_smartcard_key(priv, pin);
|
|
}
|
|
if (!user)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR,
|
|
NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS,
|
|
"no usable smartcard certificate found.");
|
|
gateway->destroy(gateway);
|
|
return FALSE;
|
|
}
|
|
}
|
|
/* ... or certificate/private key authentication */
|
|
else if ((str = nm_setting_vpn_get_data_item(vpn, "usercert")))
|
|
{
|
|
public_key_t *public;
|
|
private_key_t *private = NULL;
|
|
|
|
cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509,
|
|
BUILD_FROM_FILE, str, BUILD_END);
|
|
if (!cert)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR,
|
|
NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS,
|
|
"Loading peer certificate failed.");
|
|
gateway->destroy(gateway);
|
|
return FALSE;
|
|
}
|
|
/* try agent */
|
|
str = nm_setting_vpn_get_secret(vpn, "agent");
|
|
if (agent && str)
|
|
{
|
|
public = cert->get_public_key(cert);
|
|
if (public)
|
|
{
|
|
private = lib->creds->create(lib->creds, CRED_PRIVATE_KEY,
|
|
public->get_type(public),
|
|
BUILD_AGENT_SOCKET, str,
|
|
BUILD_PUBLIC_KEY, public,
|
|
BUILD_END);
|
|
public->destroy(public);
|
|
}
|
|
if (!private)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR,
|
|
NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS,
|
|
"Connecting to SSH agent failed.");
|
|
}
|
|
}
|
|
/* ... or key file */
|
|
str = nm_setting_vpn_get_data_item(vpn, "userkey");
|
|
if (!agent && str)
|
|
{
|
|
char *secret;
|
|
|
|
secret = (char*)nm_setting_vpn_get_secret(vpn, "password");
|
|
if (secret)
|
|
{
|
|
priv->creds->set_key_password(priv->creds, secret);
|
|
}
|
|
private = lib->creds->create(lib->creds, CRED_PRIVATE_KEY,
|
|
KEY_ANY, BUILD_FROM_FILE, str, BUILD_END);
|
|
if (!private)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR,
|
|
NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS,
|
|
"Loading private key failed.");
|
|
}
|
|
}
|
|
if (private)
|
|
{
|
|
user = cert->get_subject(cert);
|
|
user = user->clone(user);
|
|
priv->creds->set_cert_and_key(priv->creds, cert, private);
|
|
}
|
|
else
|
|
{
|
|
DESTROY_IF(cert);
|
|
gateway->destroy(gateway);
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!user)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_BAD_ARGUMENTS,
|
|
"Configuration parameters missing.");
|
|
gateway->destroy(gateway);
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* Set up configurations
|
|
*/
|
|
ike_cfg = ike_cfg_create(&ike);
|
|
|
|
str = nm_setting_vpn_get_data_item(vpn, "proposal");
|
|
proposal = streq(str, "yes");
|
|
str = nm_setting_vpn_get_data_item(vpn, "ike");
|
|
if (proposal && str && strlen(str))
|
|
{
|
|
enumerator = enumerator_create_token(str, ";", "");
|
|
while (enumerator->enumerate(enumerator, &str))
|
|
{
|
|
prop = proposal_create_from_string(PROTO_IKE, str);
|
|
if (!prop)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR,
|
|
NM_VPN_PLUGIN_ERROR_LAUNCH_FAILED,
|
|
"Invalid IKE proposal.");
|
|
enumerator->destroy(enumerator);
|
|
ike_cfg->destroy(ike_cfg);
|
|
gateway->destroy(gateway);
|
|
user->destroy(user);
|
|
return FALSE;
|
|
}
|
|
ike_cfg->add_proposal(ike_cfg, prop);
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
}
|
|
else
|
|
{
|
|
ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE));
|
|
ike_cfg->add_proposal(ike_cfg, proposal_create_default_aead(PROTO_IKE));
|
|
}
|
|
|
|
peer_cfg = peer_cfg_create(priv->name, ike_cfg, &peer);
|
|
if (virtual)
|
|
{
|
|
peer_cfg->add_virtual_ip(peer_cfg, host_create_any(AF_INET));
|
|
peer_cfg->add_virtual_ip(peer_cfg, host_create_any(AF_INET6));
|
|
}
|
|
auth = auth_cfg_create();
|
|
auth->add(auth, AUTH_RULE_AUTH_CLASS, auth_class);
|
|
auth->add(auth, AUTH_RULE_IDENTITY, user);
|
|
peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE);
|
|
auth = auth_cfg_create();
|
|
if (auth_class == AUTH_CLASS_PSK)
|
|
{
|
|
auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PSK);
|
|
}
|
|
else
|
|
{
|
|
auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
|
|
}
|
|
auth->add(auth, AUTH_RULE_IDENTITY, gateway);
|
|
auth->add(auth, AUTH_RULE_IDENTITY_LOOSE, loose_gateway_id);
|
|
peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE);
|
|
|
|
child_cfg = child_cfg_create(priv->name, &child);
|
|
str = nm_setting_vpn_get_data_item(vpn, "esp");
|
|
if (proposal && str && strlen(str))
|
|
{
|
|
enumerator = enumerator_create_token(str, ";", "");
|
|
while (enumerator->enumerate(enumerator, &str))
|
|
{
|
|
prop = proposal_create_from_string(PROTO_ESP, str);
|
|
if (!prop)
|
|
{
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR,
|
|
NM_VPN_PLUGIN_ERROR_LAUNCH_FAILED,
|
|
"Invalid ESP proposal.");
|
|
enumerator->destroy(enumerator);
|
|
child_cfg->destroy(child_cfg);
|
|
peer_cfg->destroy(peer_cfg);
|
|
return FALSE;
|
|
}
|
|
child_cfg->add_proposal(child_cfg, prop);
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
}
|
|
else
|
|
{
|
|
child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
|
|
child_cfg->add_proposal(child_cfg, proposal_create_default_aead(PROTO_ESP));
|
|
}
|
|
ts = traffic_selector_create_dynamic(0, 0, 65535);
|
|
child_cfg->add_traffic_selector(child_cfg, TRUE, ts);
|
|
ts = traffic_selector_create_from_cidr("0.0.0.0/0", 0, 0, 65535);
|
|
child_cfg->add_traffic_selector(child_cfg, FALSE, ts);
|
|
ts = traffic_selector_create_from_cidr("::/0", 0, 0, 65535);
|
|
child_cfg->add_traffic_selector(child_cfg, FALSE, ts);
|
|
peer_cfg->add_child_cfg(peer_cfg, child_cfg);
|
|
|
|
/**
|
|
* Prepare IKE_SA
|
|
*/
|
|
ike_sa = charon->ike_sa_manager->checkout_by_config(charon->ike_sa_manager,
|
|
peer_cfg);
|
|
if (!ike_sa)
|
|
{
|
|
peer_cfg->destroy(peer_cfg);
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_LAUNCH_FAILED,
|
|
"IKE version not supported.");
|
|
return FALSE;
|
|
}
|
|
if (!ike_sa->get_peer_cfg(ike_sa))
|
|
{
|
|
ike_sa->set_peer_cfg(ike_sa, peer_cfg);
|
|
}
|
|
peer_cfg->destroy(peer_cfg);
|
|
|
|
/**
|
|
* Register listener, enable initiate-failure-detection hooks
|
|
*/
|
|
priv->ike_sa = ike_sa;
|
|
priv->listener.ike_state_change = ike_state_change;
|
|
priv->listener.child_state_change = child_state_change;
|
|
charon->bus->add_listener(charon->bus, &priv->listener);
|
|
|
|
/**
|
|
* Initiate
|
|
*/
|
|
child_cfg->get_ref(child_cfg);
|
|
if (ike_sa->initiate(ike_sa, child_cfg, 0, NULL, NULL) != SUCCESS)
|
|
{
|
|
charon->bus->remove_listener(charon->bus, &priv->listener);
|
|
charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager, ike_sa);
|
|
|
|
g_set_error(err, NM_VPN_PLUGIN_ERROR, NM_VPN_PLUGIN_ERROR_LAUNCH_FAILED,
|
|
"Initiating failed.");
|
|
return FALSE;
|
|
}
|
|
charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* NeedSecrets called from NM via DBUS
|
|
*/
|
|
static gboolean need_secrets(NMVpnServicePlugin *plugin, NMConnection *connection,
|
|
const char **setting_name, GError **error)
|
|
{
|
|
NMSettingVpn *settings;
|
|
const char *method, *path;
|
|
|
|
settings = NM_SETTING_VPN(nm_connection_get_setting(connection,
|
|
NM_TYPE_SETTING_VPN));
|
|
method = nm_setting_vpn_get_data_item(settings, "method");
|
|
if (method)
|
|
{
|
|
if (streq(method, "eap") || streq(method, "psk"))
|
|
{
|
|
if (nm_setting_vpn_get_secret(settings, "password"))
|
|
{
|
|
return FALSE;
|
|
}
|
|
}
|
|
else if (streq(method, "agent"))
|
|
{
|
|
if (nm_setting_vpn_get_secret(settings, "agent"))
|
|
{
|
|
return FALSE;
|
|
}
|
|
}
|
|
else if (streq(method, "key"))
|
|
{
|
|
path = nm_setting_vpn_get_data_item(settings, "userkey");
|
|
if (path)
|
|
{
|
|
private_key_t *key;
|
|
|
|
/* try to load/decrypt the private key */
|
|
key = lib->creds->create(lib->creds, CRED_PRIVATE_KEY,
|
|
KEY_ANY, BUILD_FROM_FILE, path, BUILD_END);
|
|
if (key)
|
|
{
|
|
key->destroy(key);
|
|
return FALSE;
|
|
}
|
|
else if (nm_setting_vpn_get_secret(settings, "password"))
|
|
{
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
else if (streq(method, "smartcard"))
|
|
{
|
|
if (nm_setting_vpn_get_secret(settings, "password"))
|
|
{
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
*setting_name = NM_SETTING_VPN_SETTING_NAME;
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* The actual disconnection
|
|
*/
|
|
static gboolean do_disconnect(gpointer plugin)
|
|
{
|
|
NMStrongswanPluginPrivate *priv = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(plugin);
|
|
enumerator_t *enumerator;
|
|
ike_sa_t *ike_sa;
|
|
u_int id;
|
|
|
|
/* our ike_sa pointer might be invalid, lookup sa */
|
|
enumerator = charon->controller->create_ike_sa_enumerator(
|
|
charon->controller, TRUE);
|
|
while (enumerator->enumerate(enumerator, &ike_sa))
|
|
{
|
|
if (priv->ike_sa == ike_sa)
|
|
{
|
|
id = ike_sa->get_unique_id(ike_sa);
|
|
enumerator->destroy(enumerator);
|
|
charon->controller->terminate_ike(charon->controller, id, FALSE,
|
|
controller_cb_empty, NULL, 0);
|
|
return FALSE;
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
g_debug("Connection not found.");
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* Disconnect called from NM via DBUS
|
|
*/
|
|
static gboolean disconnect(NMVpnServicePlugin *plugin, GError **err)
|
|
{
|
|
/* enqueue the actual disconnection, because we may be called in
|
|
* response to a listener_t callback and the SA enumeration would
|
|
* possibly deadlock. */
|
|
g_idle_add(do_disconnect, plugin);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Initializer
|
|
*/
|
|
static void nm_strongswan_plugin_init(NMStrongswanPlugin *plugin)
|
|
{
|
|
NMStrongswanPluginPrivate *priv;
|
|
|
|
priv = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(plugin);
|
|
priv->plugin = NM_VPN_SERVICE_PLUGIN(plugin);
|
|
memset(&priv->listener, 0, sizeof(listener_t));
|
|
priv->listener.child_updown = child_updown;
|
|
priv->listener.ike_rekey = ike_rekey;
|
|
priv->name = NULL;
|
|
}
|
|
|
|
/**
|
|
* Class constructor
|
|
*/
|
|
static void nm_strongswan_plugin_class_init(
|
|
NMStrongswanPluginClass *strongswan_class)
|
|
{
|
|
NMVpnServicePluginClass *parent_class = NM_VPN_SERVICE_PLUGIN_CLASS(strongswan_class);
|
|
|
|
parent_class->connect = connect_;
|
|
parent_class->need_secrets = need_secrets;
|
|
parent_class->disconnect = disconnect;
|
|
}
|
|
|
|
/**
|
|
* Object constructor
|
|
*/
|
|
NMStrongswanPlugin *nm_strongswan_plugin_new(nm_creds_t *creds,
|
|
nm_handler_t *handler)
|
|
{
|
|
GError *error = NULL;
|
|
|
|
NMStrongswanPlugin *plugin = (NMStrongswanPlugin *)g_initable_new (
|
|
NM_TYPE_STRONGSWAN_PLUGIN,
|
|
NULL,
|
|
&error,
|
|
NM_VPN_SERVICE_PLUGIN_DBUS_SERVICE_NAME, NM_DBUS_SERVICE_STRONGSWAN,
|
|
NULL);
|
|
|
|
if (plugin)
|
|
{
|
|
NMStrongswanPluginPrivate *priv;
|
|
|
|
/* the rest of the initialization happened in _init above */
|
|
priv = NM_STRONGSWAN_PLUGIN_GET_PRIVATE(plugin);
|
|
priv->creds = creds;
|
|
priv->handler = handler;
|
|
}
|
|
else
|
|
{
|
|
g_warning ("Failed to initialize a plugin instance: %s", error->message);
|
|
g_error_free (error);
|
|
}
|
|
|
|
return plugin;
|
|
}
|