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src/sbin/ipsecctl/ike.c

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/* $OpenBSD: ike.c,v 1.84 2023/08/07 04:10:08 dlg Exp $ */
/*
* Copyright (c) 2005 Hans-Joerg Hoexer <hshoexer@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/queue.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include "ipsecctl.h"
static void ike_section_general(struct ipsec_rule *, FILE *);
static void ike_section_peer(struct ipsec_rule *, FILE *);
static void ike_section_ids(struct ipsec_rule *, FILE *);
static void ike_section_ipsec(struct ipsec_rule *, FILE *);
static int ike_section_p1(struct ipsec_rule *, FILE *);
static int ike_section_p2(struct ipsec_rule *, FILE *);
static void ike_section_p2ids(struct ipsec_rule *, FILE *);
static int ike_connect(struct ipsec_rule *, FILE *);
static int ike_gen_config(struct ipsec_rule *, FILE *);
static int ike_delete_config(struct ipsec_rule *, FILE *);
static void ike_setup_ids(struct ipsec_rule *);
int ike_print_config(struct ipsec_rule *, int);
int ike_ipsec_establish(int, struct ipsec_rule *, const char *);
#define SET "C set "
#define ADD "C add "
#define DELETE "C rms "
#define RMV "C rmv "
#define CONF_DFLT_DYNAMIC_DPD_CHECK_INTERVAL 5
#define CONF_DFLT_DYNAMIC_CHECK_INTERVAL 30
char *ike_id_types[] = {
"", "", "IPV4_ADDR", "IPV6_ADDR", "FQDN", "USER_FQDN"
};
static void
ike_section_general(struct ipsec_rule *r, FILE *fd)
{
if (r->ikemode == IKE_DYNAMIC) {
fprintf(fd, SET "[General]:Check-interval=%d force\n",
CONF_DFLT_DYNAMIC_CHECK_INTERVAL);
fprintf(fd, SET "[General]:DPD-check-interval=%d force\n",
CONF_DFLT_DYNAMIC_DPD_CHECK_INTERVAL);
}
}
static void
ike_section_peer(struct ipsec_rule *r, FILE *fd)
{
if (r->peer)
fprintf(fd, SET "[Phase 1]:%s=%s force\n", r->peer->name,
r->p1name);
else
fprintf(fd, SET "[Phase 1]:Default=%s force\n", r->p1name);
fprintf(fd, SET "[%s]:Phase=1 force\n", r->p1name);
if (r->peer)
fprintf(fd, SET "[%s]:Address=%s force\n", r->p1name,
r->peer->name);
if (r->local)
fprintf(fd, SET "[%s]:Local-address=%s force\n", r->p1name,
r->local->name);
if (r->ikeauth->type == IKE_AUTH_PSK)
fprintf(fd, SET "[%s]:Authentication=%s force\n", r->p1name,
r->ikeauth->string);
}
static void
ike_section_ids(struct ipsec_rule *r, FILE *fd)
{
char myname[HOST_NAME_MAX+1];
if (r->auth == NULL)
return;
if (r->ikemode == IKE_DYNAMIC && r->auth->srcid == NULL) {
if (gethostname(myname, sizeof(myname)) == -1)
err(1, "ike_section_ids: gethostname");
if ((r->auth->srcid = strdup(myname)) == NULL)
err(1, "ike_section_ids: strdup");
r->auth->srcid_type = ID_FQDN;
}
if (r->auth->srcid) {
fprintf(fd, SET "[%s]:ID=id-%s force\n", r->p1name,
r->auth->srcid);
fprintf(fd, SET "[id-%s]:ID-type=%s force\n", r->auth->srcid,
ike_id_types[r->auth->srcid_type]);
if (r->auth->srcid_type == ID_IPV4 ||
r->auth->srcid_type == ID_IPV6)
fprintf(fd, SET "[id-%s]:Address=%s force\n",
r->auth->srcid, r->auth->srcid);
else
fprintf(fd, SET "[id-%s]:Name=%s force\n",
r->auth->srcid, r->auth->srcid);
}
if (r->auth->dstid) {
fprintf(fd, SET "[%s]:Remote-ID=id-%s force\n", r->p1name,
r->auth->dstid);
fprintf(fd, SET "[id-%s]:ID-type=%s force\n", r->auth->dstid,
ike_id_types[r->auth->dstid_type]);
if (r->auth->dstid_type == ID_IPV4 ||
r->auth->dstid_type == ID_IPV6)
fprintf(fd, SET "[id-%s]:Address=%s force\n",
r->auth->dstid, r->auth->dstid);
else
fprintf(fd, SET "[id-%s]:Name=%s force\n",
r->auth->dstid, r->auth->dstid);
}
}
static void
ike_section_ipsec(struct ipsec_rule *r, FILE *fd)
{
fprintf(fd, SET "[%s]:Phase=2 force\n", r->p2name);
fprintf(fd, SET "[%s]:ISAKMP-peer=%s force\n", r->p2name, r->p1name);
fprintf(fd, SET "[%s]:Configuration=phase2-%s force\n", r->p2name,
r->p2name);
fprintf(fd, SET "[%s]:Local-ID=%s force\n", r->p2name, r->p2lid);
if (r->p2nid)
fprintf(fd, SET "[%s]:NAT-ID=%s force\n", r->p2name, r->p2nid);
fprintf(fd, SET "[%s]:Remote-ID=%s force\n", r->p2name, r->p2rid);
if (r->tag)
fprintf(fd, SET "[%s]:PF-Tag=%s force\n", r->p2name, r->tag);
if (r->flags & IPSEC_RULE_F_IFACE) {
fprintf(fd, SET "[%s]:Interface=%u force\n", r->p2name,
r->iface);
}
}
static int
ike_section_p2(struct ipsec_rule *r, FILE *fd)
{
char *exchange_type, *key_length, *transform, *p;
char *enc_alg, *auth_alg, *group_desc, *encap;
int needauth = 1;
int num_print = 0;
switch (r->p2ie) {
case IKE_QM:
exchange_type = "QUICK_MODE";
break;
default:
warnx("illegal phase 2 ike mode %d", r->p2ie);
return (-1);
}
fprintf(fd, SET "[phase2-%s]:EXCHANGE_TYPE=%s force\n", r->p2name,
exchange_type);
fprintf(fd, SET "[phase2-%s]:Suites=phase2-suite-%s force\n", r->p2name,
r->p2name);
fprintf(fd, SET "[phase2-suite-%s]:Protocols=phase2-protocol-%s "
"force\n", r->p2name, r->p2name);
fprintf(fd, SET "[phase2-protocol-%s]:PROTOCOL_ID=", r->p2name);
switch (r->satype) {
case IPSEC_ESP:
fprintf(fd, "IPSEC_ESP");
break;
case IPSEC_AH:
fprintf(fd, "IPSEC_AH");
break;
default:
warnx("illegal satype %d", r->satype);
return (-1);
}
fprintf(fd, " force\n");
key_length = NULL;
enc_alg = NULL;
if (r->p2xfs && r->p2xfs->encxf) {
if (r->satype == IPSEC_ESP) {
switch (r->p2xfs->encxf->id) {
case ENCXF_3DES_CBC:
enc_alg = "3DES";
break;
case ENCXF_AES:
enc_alg = "AES";
key_length = "128,128:256";
break;
case ENCXF_AES_128:
enc_alg = "AES";
key_length = "128,128:128";
break;
case ENCXF_AES_192:
enc_alg = "AES";
key_length = "192,192:192";
break;
case ENCXF_AES_256:
enc_alg = "AES";
key_length = "256,256:256";
break;
case ENCXF_AESCTR:
enc_alg = "AES_CTR";
key_length = "128,128:128";
break;
case ENCXF_AES_128_CTR:
enc_alg = "AES_CTR";
key_length = "128,128:128";
break;
case ENCXF_AES_192_CTR:
enc_alg = "AES_CTR";
key_length = "192,192:192";
break;
case ENCXF_AES_256_CTR:
enc_alg = "AES_CTR";
key_length = "256,256:256";
break;
case ENCXF_AES_128_GCM:
enc_alg = "AES_GCM_16";
key_length = "128,128:128";
needauth = 0;
break;
case ENCXF_AES_192_GCM:
enc_alg = "AES_GCM_16";
key_length = "192,192:192";
needauth = 0;
break;
case ENCXF_AES_256_GCM:
enc_alg = "AES_GCM_16";
key_length = "256,256:256";
needauth = 0;
break;
case ENCXF_AES_128_GMAC:
enc_alg = "AES_GMAC";
key_length = "128,128:128";
needauth = 0;
break;
case ENCXF_AES_192_GMAC:
enc_alg = "AES_GMAC";
key_length = "192,192:192";
needauth = 0;
break;
case ENCXF_AES_256_GMAC:
enc_alg = "AES_GMAC";
key_length = "256,256:256";
needauth = 0;
break;
case ENCXF_BLOWFISH:
enc_alg = "BLOWFISH";
key_length = "128,96:192";
break;
case ENCXF_CAST128:
enc_alg = "CAST";
break;
case ENCXF_NULL:
enc_alg = "NULL";
needauth = 0;
break;
default:
warnx("illegal transform %s",
r->p2xfs->encxf->name);
return (-1);
}
} else {
warnx("illegal transform %s", r->p2xfs->encxf->name);
return (-1);
}
} else if (r->satype == IPSEC_ESP) {
enc_alg = "AES";
key_length = "128,128:256";
}
switch (r->tmode) {
case IPSEC_TUNNEL:
encap = "TUNNEL";
break;
case IPSEC_TRANSPORT:
encap = "TRANSPORT";
break;
default:
warnx("illegal encapsulation mode %d", r->tmode);
return (-1);
}
auth_alg = NULL;
if (r->p2xfs && r->p2xfs->authxf) {
switch (r->p2xfs->authxf->id) {
case AUTHXF_HMAC_MD5:
auth_alg = "MD5";
break;
case AUTHXF_HMAC_SHA1:
auth_alg = "SHA";
break;
case AUTHXF_HMAC_RIPEMD160:
auth_alg = "RIPEMD";
break;
case AUTHXF_HMAC_SHA2_256:
auth_alg = "SHA2_256";
break;
case AUTHXF_HMAC_SHA2_384:
auth_alg = "SHA2_384";
break;
case AUTHXF_HMAC_SHA2_512:
auth_alg = "SHA2_512";
break;
default:
warnx("illegal transform %s", r->p2xfs->authxf->name);
return (-1);
}
} else if (needauth)
auth_alg = "SHA2_256";
group_desc = NULL;
if (r->p2xfs && r->p2xfs->groupxf) {
switch (r->p2xfs->groupxf->id) {
case GROUPXF_NONE:
break;
case GROUPXF_1:
group_desc = "MODP_768";
break;
case GROUPXF_2:
group_desc = "MODP_1024";
break;
case GROUPXF_5:
group_desc = "MODP_1536";
break;
case GROUPXF_14:
group_desc = "MODP_2048";
break;
case GROUPXF_15:
group_desc = "MODP_3072";
break;
case GROUPXF_16:
group_desc = "MODP_4096";
break;
case GROUPXF_17:
group_desc = "MODP_6144";
break;
case GROUPXF_18:
group_desc = "MODP_8192";
break;
case GROUPXF_19:
group_desc = "ECP_256";
break;
case GROUPXF_20:
group_desc = "ECP_384";
break;
case GROUPXF_21:
group_desc = "ECP_521";
break;
case GROUPXF_25:
group_desc = "ECP_192";
break;
case GROUPXF_26:
group_desc = "ECP_224";
break;
case GROUPXF_27:
group_desc = "BP_224";
break;
case GROUPXF_28:
group_desc = "BP_256";
break;
case GROUPXF_29:
group_desc = "BP_384";
break;
case GROUPXF_30:
group_desc = "BP_512";
break;
default:
warnx("illegal group %s", r->p2xfs->groupxf->name);
return (-1);
}
} else
group_desc = "MODP_3072";
/* the transform name must not include "," */
if (key_length && (p = strchr(key_length, ',')) != NULL)
num_print = p - key_length;
/*
* create a unique transform name, otherwise we cannot have
* multiple transforms per p2name.
*/
if (asprintf(&transform, "phase2-transform-%s-%s%.*s-%s-%s-%s",
r->p2name,
enc_alg ? enc_alg : "NONE",
num_print, key_length ? key_length : "",
auth_alg ? auth_alg : "NONE",
group_desc ? group_desc : "NONE",
encap) == -1)
errx(1, "asprintf phase2-transform");
fprintf(fd, SET "[phase2-protocol-%s]:Transforms=%s force\n",
r->p2name, transform);
fprintf(fd, SET "[%s]:TRANSFORM_ID=%s force\n", transform,
r->satype == IPSEC_AH ? auth_alg : enc_alg);
if (key_length)
fprintf(fd, SET "[%s]:KEY_LENGTH=%s force\n", transform,
key_length);
fprintf(fd, SET "[%s]:ENCAPSULATION_MODE=%s force\n", transform, encap);
if (auth_alg)
fprintf(fd, SET "[%s]:AUTHENTICATION_ALGORITHM=HMAC_%s force\n",
transform, auth_alg);
if (group_desc)
fprintf(fd, SET "[%s]:GROUP_DESCRIPTION=%s force\n", transform,
group_desc);
if (r->p2life && r->p2life->lt_seconds != -1) {
fprintf(fd, SET "[%s]:Life=%s-life force\n",
transform, transform);
fprintf(fd, SET "[%s-life]:LIFE_TYPE=SECONDS force\n",
transform);
fprintf(fd, SET "[%s-life]:LIFE_DURATION=%d force\n",
transform, r->p2life->lt_seconds);
} else
fprintf(fd, SET "[%s]:Life=LIFE_QUICK_MODE force\n",
transform);
free(transform);
return (0);
}
static int
ike_section_p1(struct ipsec_rule *r, FILE *fd)
{
char *exchange_type, *key_length, *transform, *p;
char *enc_alg, *auth_alg, *group_desc, *auth_method;
int num_print = 0;
switch (r->p1ie) {
case IKE_MM:
exchange_type = "ID_PROT";
break;
case IKE_AM:
exchange_type = "AGGRESSIVE";
break;
default:
warnx("illegal phase 1 ike mode %d", r->p1ie);
return (-1);
}
fprintf(fd, SET "[%s]:Configuration=phase1-%s force\n", r->p1name,
r->p1name);
fprintf(fd, SET "[phase1-%s]:EXCHANGE_TYPE=%s force\n", r->p1name,
exchange_type);
key_length = NULL;
if (r->p1xfs && r->p1xfs->encxf) {
switch (r->p1xfs->encxf->id) {
case ENCXF_3DES_CBC:
enc_alg = "3DES";
break;
case ENCXF_AES:
enc_alg = "AES";
key_length = "128,128:256";
break;
case ENCXF_AES_128:
enc_alg = "AES";
key_length = "128,128:128";
break;
case ENCXF_AES_192:
enc_alg = "AES";
key_length = "192,192:192";
break;
case ENCXF_AES_256:
enc_alg = "AES";
key_length = "256,256:256";
break;
case ENCXF_BLOWFISH:
enc_alg = "BLOWFISH";
key_length = "128,96:192";
break;
case ENCXF_CAST128:
enc_alg = "CAST";
break;
default:
warnx("illegal transform %s", r->p1xfs->encxf->name);
return (-1);
}
} else {
enc_alg = "AES";
key_length = "128,128:256";
}
if (r->p1xfs && r->p1xfs->authxf) {
switch (r->p1xfs->authxf->id) {
case AUTHXF_HMAC_MD5:
auth_alg = "MD5";
break;
case AUTHXF_HMAC_SHA1:
auth_alg = "SHA";
break;
case AUTHXF_HMAC_SHA2_256:
auth_alg = "SHA2_256";
break;
case AUTHXF_HMAC_SHA2_384:
auth_alg = "SHA2_384";
break;
case AUTHXF_HMAC_SHA2_512:
auth_alg = "SHA2_512";
break;
default:
warnx("illegal transform %s", r->p1xfs->authxf->name);
return (-1);
}
} else
auth_alg = "SHA";
if (r->p1xfs && r->p1xfs->groupxf) {
switch (r->p1xfs->groupxf->id) {
case GROUPXF_1:
group_desc = "MODP_768";
break;
case GROUPXF_2:
group_desc = "MODP_1024";
break;
case GROUPXF_5:
group_desc = "MODP_1536";
break;
case GROUPXF_14:
group_desc = "MODP_2048";
break;
case GROUPXF_15:
group_desc = "MODP_3072";
break;
case GROUPXF_16:
group_desc = "MODP_4096";
break;
case GROUPXF_17:
group_desc = "MODP_6144";
break;
case GROUPXF_18:
group_desc = "MODP_8192";
break;
case GROUPXF_19:
group_desc = "ECP_256";
break;
case GROUPXF_20:
group_desc = "ECP_384";
break;
case GROUPXF_21:
group_desc = "ECP_521";
break;
case GROUPXF_25:
group_desc = "ECP_192";
break;
case GROUPXF_26:
group_desc = "ECP_224";
break;
case GROUPXF_27:
group_desc = "BP_224";
break;
case GROUPXF_28:
group_desc = "BP_256";
break;
case GROUPXF_29:
group_desc = "BP_384";
break;
case GROUPXF_30:
group_desc = "BP_512";
break;
default:
warnx("illegal group %s", r->p1xfs->groupxf->name);
return (-1);
}
} else
group_desc = "MODP_3072";
switch (r->ikeauth->type) {
case IKE_AUTH_PSK:
auth_method = "PRE_SHARED";
break;
case IKE_AUTH_RSA:
auth_method = "RSA_SIG";
break;
default:
warnx("illegal authentication method %u", r->ikeauth->type);
return (-1);
}
/* the transform name must not include "," */
if (key_length && (p = strchr(key_length, ',')) != NULL)
num_print = p - key_length;
/* create unique name for transform, see also ike_section_p2() */
if (asprintf(&transform, "phase1-transform-%s-%s-%s-%s%.*s-%s",
r->p1name, auth_method, auth_alg, enc_alg,
num_print, key_length ? key_length : "",
group_desc) == -1)
errx(1, "asprintf phase1-transform");
fprintf(fd, ADD "[phase1-%s]:Transforms=%s force\n", r->p1name,
transform);
fprintf(fd, SET "[%s]:AUTHENTICATION_METHOD=%s force\n", transform,
auth_method);
fprintf(fd, SET "[%s]:HASH_ALGORITHM=%s force\n", transform, auth_alg);
fprintf(fd, SET "[%s]:ENCRYPTION_ALGORITHM=%s_CBC force\n", transform,
enc_alg);
if (key_length)
fprintf(fd, SET "[%s]:KEY_LENGTH=%s force\n", transform,
key_length);
fprintf(fd, SET "[%s]:GROUP_DESCRIPTION=%s force\n", transform,
group_desc);
if (r->p1life && r->p1life->lt_seconds != -1) {
fprintf(fd, SET "[%s]:Life=%s-life force\n",
transform, transform);
fprintf(fd, SET "[%s-life]:LIFE_TYPE=SECONDS force\n",
transform);
fprintf(fd, SET "[%s-life]:LIFE_DURATION=%d force\n",
transform, r->p1life->lt_seconds);
} else
fprintf(fd, SET "[%s]:Life=LIFE_MAIN_MODE force\n", transform);
free(transform);
return (0);
}
static void
ike_section_p2ids_net(struct ipsec_addr *iamask, sa_family_t af, char *name,
char *p2xid, FILE *fd)
{
char mask[NI_MAXHOST], *network, *p;
struct sockaddr_storage sas;
struct sockaddr *sa = (struct sockaddr *)&sas;
bzero(&sas, sizeof(struct sockaddr_storage));
bzero(mask, sizeof(mask));
sa->sa_family = af;
switch (af) {
case AF_INET:
sa->sa_len = sizeof(struct sockaddr_in);
bcopy(&iamask->ipa,
&((struct sockaddr_in *)(sa))->sin_addr,
sizeof(struct in_addr));
break;
case AF_INET6:
sa->sa_len = sizeof(struct sockaddr_in6);
bcopy(&iamask->ipa,
&((struct sockaddr_in6 *)(sa))->sin6_addr,
sizeof(struct in6_addr));
break;
}
if (getnameinfo(sa, sa->sa_len, mask, sizeof(mask), NULL, 0,
NI_NUMERICHOST))
errx(1, "could not get a numeric mask");
if ((network = strdup(name)) == NULL)
err(1, "ike_section_p2ids: strdup");
if ((p = strrchr(network, '/')) != NULL)
*p = '\0';
fprintf(fd, SET "[%s]:ID-type=IPV%d_ADDR_SUBNET force\n",
p2xid, ((af == AF_INET) ? 4 : 6));
fprintf(fd, SET "[%s]:Network=%s force\n", p2xid, network);
fprintf(fd, SET "[%s]:Netmask=%s force\n", p2xid, mask);
free(network);
}
static void
ike_section_p2ids(struct ipsec_rule *r, FILE *fd)
{
char *p;
struct ipsec_addr_wrap *src = r->src;
struct ipsec_addr_wrap *dst = r->dst;
if (src->netaddress) {
ike_section_p2ids_net(&src->mask, src->af, src->name,
r->p2lid, fd);
} else {
fprintf(fd, SET "[%s]:ID-type=IPV%d_ADDR force\n",
r->p2lid, ((src->af == AF_INET) ? 4 : 6));
if ((p = strrchr(src->name, '/')) != NULL)
*p = '\0';
fprintf(fd, SET "[%s]:Address=%s force\n", r->p2lid,
src->name);
}
if (src->srcnat && src->srcnat->netaddress) {
ike_section_p2ids_net(&src->srcnat->mask, src->af, src->srcnat->name,
r->p2nid, fd);
} else if (src->srcnat) {
fprintf(fd, SET "[%s]:ID-type=IPV%d_ADDR force\n",
r->p2nid, ((src->af == AF_INET) ? 4 : 6));
if ((p = strrchr(src->srcnat->name, '/')) != NULL)
*p = '\0';
fprintf(fd, SET "[%s]:Address=%s force\n", r->p2nid,
src->srcnat->name);
}
if (dst->netaddress) {
ike_section_p2ids_net(&dst->mask, dst->af, dst->name,
r->p2rid, fd);
} else {
fprintf(fd, SET "[%s]:ID-type=IPV%d_ADDR force\n",
r->p2rid, ((dst->af == AF_INET) ? 4 : 6));
if ((p = strrchr(dst->name, '/')) != NULL)
*p = '\0';
fprintf(fd, SET "[%s]:Address=%s force\n", r->p2rid,
dst->name);
}
if (r->proto) {
fprintf(fd, SET "[%s]:Protocol=%d force\n",
r->p2lid, r->proto);
fprintf(fd, SET "[%s]:Protocol=%d force\n",
r->p2rid, r->proto);
}
if (r->sport)
fprintf(fd, SET "[%s]:Port=%d force\n", r->p2lid,
ntohs(r->sport));
if (r->dport)
fprintf(fd, SET "[%s]:Port=%d force\n", r->p2rid,
ntohs(r->dport));
}
static int
ike_connect(struct ipsec_rule *r, FILE *fd)
{
switch (r->ikemode) {
case IKE_ACTIVE:
case IKE_DYNAMIC:
fprintf(fd, ADD "[Phase 2]:Connections=%s\n", r->p2name);
break;
case IKE_PASSIVE:
fprintf(fd, ADD "[Phase 2]:Passive-Connections=%s\n",
r->p2name);
break;
default:
return (-1);
}
return (0);
}
static int
ike_gen_config(struct ipsec_rule *r, FILE *fd)
{
ike_setup_ids(r);
ike_section_general(r, fd);
ike_section_peer(r, fd);
if (ike_section_p1(r, fd) == -1) {
return (-1);
}
ike_section_ids(r, fd);
ike_section_ipsec(r, fd);
if (ike_section_p2(r, fd) == -1) {
return (-1);
}
ike_section_p2ids(r, fd);
if (ike_connect(r, fd) == -1)
return (-1);
return (0);
}
static int
ike_delete_config(struct ipsec_rule *r, FILE *fd)
{
ike_setup_ids(r);
#if 0
switch (r->ikemode) {
case IKE_ACTIVE:
case IKE_DYNAMIC:
fprintf(fd, "t %s\n", r->p2name);
break;
case IKE_PASSIVE:
fprintf(fd, DELETE "[Phase 2]\n");
fprintf(fd, "t %s\n", r->p2name);
break;
default:
return (-1);
}
if (r->peer) {
fprintf(fd, DELETE "[%s]\n", r->p1name);
fprintf(fd, DELETE "[phase1-%s]\n", r->p1name);
}
if (r->auth) {
if (r->auth->srcid)
fprintf(fd, DELETE "[%s-ID]\n", r->auth->srcid);
if (r->auth->dstid)
fprintf(fd, DELETE "[%s-ID]\n", r->auth->dstid);
}
fprintf(fd, DELETE "[%s]\n", r->p2name);
fprintf(fd, DELETE "[phase2-%s]\n", r->p2name);
fprintf(fd, DELETE "[%s]\n", r->p2lid);
fprintf(fd, DELETE "[%s]\n", r->p2rid);
#else
fprintf(fd, "t %s\n", r->p2name);
switch (r->ikemode) {
case IKE_ACTIVE:
case IKE_DYNAMIC:
fprintf(fd, RMV "[Phase 2]:Connections=%s\n", r->p2name);
break;
case IKE_PASSIVE:
fprintf(fd, RMV "[Phase 2]:Passive-Connections=%s\n",
r->p2name);
break;
default:
return (-1);
}
fprintf(fd, DELETE "[%s]\n", r->p2name);
fprintf(fd, DELETE "[phase2-%s]\n", r->p2name);
#endif
return (0);
}
static void
ike_setup_ids(struct ipsec_rule *r)
{
char sproto[10], ssport[10], sdport[10];
/* phase 1 name is peer and local address */
if (r->peer) {
if (r->local) {
/* peer-dstaddr-local-srcaddr */
if (asprintf(&r->p1name, "peer-%s-local-%s",
r->peer->name, r->local->name) == -1)
err(1, "ike_setup_ids");
} else
/* peer-dstaddr */
if (asprintf(&r->p1name, "peer-%s",
r->peer->name) == -1)
err(1, "ike_setup_ids");
} else
if ((r->p1name = strdup("peer-default")) == NULL)
err(1, "ike_setup_ids");
/* Phase 2 name is from and to network, protocol, port*/
if (r->flags & IPSEC_RULE_F_IFACE) {
if (asprintf(&r->p2lid, "from-sec%u", r->iface) == -1)
err(1, "ike_setup_ids");
if (asprintf(&r->p2rid, "to-sec%u", r->iface) == -1)
err(1, "ike_setup_ids");
} else {
sproto[0] = ssport[0] = sdport[0] = 0;
if (r->proto)
snprintf(sproto, sizeof sproto, "=%u", r->proto);
if (r->sport)
snprintf(ssport, sizeof ssport, ":%u", ntohs(r->sport));
if (r->dport)
snprintf(sdport, sizeof sdport, ":%u", ntohs(r->dport));
/* from-network/masklen=proto:port */
if (asprintf(&r->p2lid, "from-%s%s%s", r->src->name,
sproto, ssport) == -1)
err(1, "ike_setup_ids");
/* to-network/masklen=proto:port */
if (asprintf(&r->p2rid, "to-%s%s%s", r->dst->name,
sproto, sdport) == -1)
err(1, "ike_setup_ids");
}
/* from-network/masklen=proto:port-to-network/masklen=proto:port */
if (asprintf(&r->p2name, "%s-%s", r->p2lid , r->p2rid) == -1)
err(1, "ike_setup_ids");
/* nat-network/masklen=proto:port */
if (r->src->srcnat && r->src->srcnat->name) {
if (asprintf(&r->p2nid, "nat-%s%s%s", r->src->srcnat->name, sproto,
ssport) == -1)
err(1, "ike_setup_ids");
}
}
int
ike_print_config(struct ipsec_rule *r, int opts)
{
if (opts & IPSECCTL_OPT_DELETE)
return (ike_delete_config(r, stdout));
else
return (ike_gen_config(r, stdout));
}
int
ike_ipsec_establish(int action, struct ipsec_rule *r, const char *fifo)
{
struct stat sb;
FILE *fdp;
int fd, ret = 0;
if ((fd = open(fifo, O_WRONLY)) == -1)
err(1, "ike_ipsec_establish: open(%s)", fifo);
if (fstat(fd, &sb) == -1)
err(1, "ike_ipsec_establish: fstat(%s)", fifo);
if (!S_ISFIFO(sb.st_mode))
errx(1, "ike_ipsec_establish: %s not a fifo", fifo);
if ((fdp = fdopen(fd, "w")) == NULL)
err(1, "ike_ipsec_establish: fdopen(%s)", fifo);
switch (action) {
case ACTION_ADD:
ret = ike_gen_config(r, fdp);
break;
case ACTION_DELETE:
ret = ike_delete_config(r, fdp);
break;
default:
ret = -1;
}
fclose(fdp);
return (ret);
}
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