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src/sbin/isakmpd/policy.c

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/* $OpenBSD: policy.c,v 1.103 2024/04/28 16:43:42 florian Exp $ */
/* $EOM: policy.c,v 1.49 2000/10/24 13:33:39 niklas Exp $ */
/*
* Copyright (c) 1999, 2000, 2001 Angelos D. Keromytis. All rights reserved.
* Copyright (c) 1999, 2000, 2001 Niklas Hallqvist. All rights reserved.
* Copyright (c) 2001 Håkan Olsson. 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 BY THE AUTHOR ``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.
*/
/*
* This code was written under funding by Ericsson Radio Systems.
*/
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <regex.h>
#include <ctype.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <keynote.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <openssl/ssl.h>
#include <netdb.h>
#include "conf.h"
#include "exchange.h"
#include "ipsec.h"
#include "isakmp_doi.h"
#include "sa.h"
#include "transport.h"
#include "log.h"
#include "message.h"
#include "monitor.h"
#include "util.h"
#include "policy.h"
#include "x509.h"
char **policy_asserts = NULL;
int ignore_policy = 0;
int policy_asserts_num = 0;
struct exchange *policy_exchange = 0;
struct sa *policy_sa = 0;
struct sa *policy_isakmp_sa = 0;
static const char hextab[] = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
};
/*
* Adaptation of Vixie's inet_ntop4 ()
*/
static const char *
my_inet_ntop4(const in_addr_t *src, char *dst, size_t size, int normalize)
{
static const char fmt[] = "%03u.%03u.%03u.%03u";
char tmp[sizeof "255.255.255.255"];
in_addr_t src2;
int len;
if (normalize)
src2 = ntohl(*src);
else
src2 = *src;
len = snprintf(tmp, sizeof tmp, fmt, ((u_int8_t *)&src2)[0],
((u_int8_t *)&src2)[1], ((u_int8_t *)&src2)[2],
((u_int8_t *)&src2)[3]);
if (len < 0 || len > (int)size) {
errno = ENOSPC;
return 0;
}
strlcpy(dst, tmp, size);
return dst;
}
static const char *
my_inet_ntop6(const unsigned char *src, char *dst, size_t size)
{
static const char fmt[] =
"%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x";
char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"];
int len;
len = snprintf(tmp, sizeof tmp, fmt, src[0], src[1], src[2], src[3],
src[4], src[5], src[6], src[7], src[8], src[9], src[10], src[11],
src[12], src[13], src[14], src[15]);
if (len < 0 || len > (int)size) {
errno = ENOSPC;
return 0;
}
strlcpy(dst, tmp, size);
return dst;
}
char *
policy_callback(char *name)
{
struct proto *proto;
u_int8_t *attr, *value, *id, *idlocal, *idremote;
size_t id_sz, idlocalsz, idremotesz;
struct sockaddr *sin;
struct ipsec_exch *ie;
struct ipsec_sa *is;
size_t i;
int fmt, lifetype = 0;
in_addr_t net, subnet;
u_int16_t len, type;
time_t tt;
char *addr;
static char mytimeofday[15];
/* We use all these as a cache. */
#define PMAX 32
static char *esp_present, *ah_present, *comp_present;
static char *ah_hash_alg, *ah_auth_alg, *esp_auth_alg, *esp_enc_alg;
static char *comp_alg, ah_life_kbytes[PMAX], ah_life_seconds[PMAX];
static char esp_life_kbytes[PMAX], esp_life_seconds[PMAX];
static char comp_life_kbytes[PMAX];
static char *ah_ecn, *esp_ecn, *comp_ecn;
static char comp_life_seconds[PMAX], *ah_encapsulation;
static char *esp_encapsulation, *comp_encapsulation;
static char ah_key_length[PMAX], esp_key_length[PMAX];
static char ah_key_rounds[PMAX], esp_key_rounds[PMAX];
static char comp_dict_size[PMAX], comp_private_alg[PMAX];
static char *remote_filter_type, *local_filter_type;
static char remote_filter_addr_upper[NI_MAXHOST];
static char remote_filter_addr_lower[NI_MAXHOST];
static char local_filter_addr_upper[NI_MAXHOST];
static char local_filter_addr_lower[NI_MAXHOST];
static char ah_group_desc[PMAX], esp_group_desc[PMAX];
static char comp_group_desc[PMAX], remote_ike_address[NI_MAXHOST];
static char local_ike_address[NI_MAXHOST];
static char *remote_id_type, remote_id_addr_upper[NI_MAXHOST];
static char *phase_1, remote_id_addr_lower[NI_MAXHOST];
static char *remote_id_proto, remote_id_port[PMAX];
static char remote_filter_port[PMAX], local_filter_port[PMAX];
static char *remote_filter_proto, *local_filter_proto, *pfs;
static char *initiator, remote_filter_proto_num[3];
static char local_filter_proto_num[3], remote_id_proto_num[3];
static char phase1_group[PMAX];
/* Allocated. */
static char *remote_filter = 0, *local_filter = 0, *remote_id = 0;
static int dirty = 1;
/* We only need to set dirty at initialization time really. */
if (strcmp(name, KEYNOTE_CALLBACK_CLEANUP) == 0 ||
strcmp(name, KEYNOTE_CALLBACK_INITIALIZE) == 0) {
esp_present = ah_present = comp_present = pfs = "no";
ah_hash_alg = ah_auth_alg = phase_1 = "";
esp_auth_alg = esp_enc_alg = comp_alg = ah_encapsulation = "";
ah_ecn = esp_ecn = comp_ecn = "no";
esp_encapsulation = comp_encapsulation = "";
remote_filter_type = "";
local_filter_type = remote_id_type = initiator = "";
remote_filter_proto = local_filter_proto = "";
remote_id_proto = "";
free(remote_filter);
remote_filter = 0;
free(local_filter);
local_filter = 0;
free(remote_id);
remote_id = 0;
bzero(remote_ike_address, sizeof remote_ike_address);
bzero(local_ike_address, sizeof local_ike_address);
bzero(ah_life_kbytes, sizeof ah_life_kbytes);
bzero(ah_life_seconds, sizeof ah_life_seconds);
bzero(esp_life_kbytes, sizeof esp_life_kbytes);
bzero(esp_life_seconds, sizeof esp_life_seconds);
bzero(comp_life_kbytes, sizeof comp_life_kbytes);
bzero(comp_life_seconds, sizeof comp_life_seconds);
bzero(ah_key_length, sizeof ah_key_length);
bzero(ah_key_rounds, sizeof ah_key_rounds);
bzero(esp_key_length, sizeof esp_key_length);
bzero(esp_key_rounds, sizeof esp_key_rounds);
bzero(comp_dict_size, sizeof comp_dict_size);
bzero(comp_private_alg, sizeof comp_private_alg);
bzero(remote_filter_addr_upper,
sizeof remote_filter_addr_upper);
bzero(remote_filter_addr_lower,
sizeof remote_filter_addr_lower);
bzero(local_filter_addr_upper,
sizeof local_filter_addr_upper);
bzero(local_filter_addr_lower,
sizeof local_filter_addr_lower);
bzero(remote_id_addr_upper, sizeof remote_id_addr_upper);
bzero(remote_id_addr_lower, sizeof remote_id_addr_lower);
bzero(ah_group_desc, sizeof ah_group_desc);
bzero(esp_group_desc, sizeof esp_group_desc);
bzero(remote_id_port, sizeof remote_id_port);
bzero(remote_filter_port, sizeof remote_filter_port);
bzero(local_filter_port, sizeof local_filter_port);
bzero(phase1_group, sizeof phase1_group);
dirty = 1;
return "";
}
/*
* If dirty is set, this is the first request for an attribute, so
* populate our value cache.
*/
if (dirty) {
ie = policy_exchange->data;
if (ie->pfs)
pfs = "yes";
is = policy_isakmp_sa->data;
snprintf(phase1_group, sizeof phase1_group, "%u",
is->group_desc);
for (proto = TAILQ_FIRST(&policy_sa->protos); proto;
proto = TAILQ_NEXT(proto, link)) {
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
ah_present = "yes";
switch (proto->id) {
case IPSEC_AH_MD5:
ah_hash_alg = "md5";
break;
case IPSEC_AH_SHA:
ah_hash_alg = "sha";
break;
case IPSEC_AH_RIPEMD:
ah_hash_alg = "ripemd";
break;
case IPSEC_AH_SHA2_256:
ah_auth_alg = "sha2-256";
break;
case IPSEC_AH_SHA2_384:
ah_auth_alg = "sha2-384";
break;
case IPSEC_AH_SHA2_512:
ah_auth_alg = "sha2-512";
break;
case IPSEC_AH_DES:
ah_hash_alg = "des";
break;
}
break;
case IPSEC_PROTO_IPSEC_ESP:
esp_present = "yes";
switch (proto->id) {
case IPSEC_ESP_DES_IV64:
esp_enc_alg = "des-iv64";
break;
case IPSEC_ESP_DES:
esp_enc_alg = "des";
break;
case IPSEC_ESP_3DES:
esp_enc_alg = "3des";
break;
case IPSEC_ESP_AES:
case IPSEC_ESP_AES_CTR:
case IPSEC_ESP_AES_GCM_16:
case IPSEC_ESP_AES_GMAC:
esp_enc_alg = "aes";
break;
case IPSEC_ESP_RC5:
esp_enc_alg = "rc5";
break;
case IPSEC_ESP_IDEA:
esp_enc_alg = "idea";
break;
case IPSEC_ESP_CAST:
esp_enc_alg = "cast";
break;
case IPSEC_ESP_BLOWFISH:
esp_enc_alg = "blowfish";
break;
case IPSEC_ESP_3IDEA:
esp_enc_alg = "3idea";
break;
case IPSEC_ESP_DES_IV32:
esp_enc_alg = "des-iv32";
break;
case IPSEC_ESP_RC4:
esp_enc_alg = "rc4";
break;
case IPSEC_ESP_NULL:
esp_enc_alg = "null";
break;
}
break;
case IPSEC_PROTO_IPCOMP:
comp_present = "yes";
switch (proto->id) {
case IPSEC_IPCOMP_OUI:
comp_alg = "oui";
break;
case IPSEC_IPCOMP_DEFLATE:
comp_alg = "deflate";
break;
}
break;
}
for (attr = proto->chosen->p +
ISAKMP_TRANSFORM_SA_ATTRS_OFF;
attr < proto->chosen->p +
GET_ISAKMP_GEN_LENGTH(proto->chosen->p);
attr = value + len) {
if (attr + ISAKMP_ATTR_VALUE_OFF >
(proto->chosen->p +
GET_ISAKMP_GEN_LENGTH(proto->chosen->p)))
return "";
type = GET_ISAKMP_ATTR_TYPE(attr);
fmt = ISAKMP_ATTR_FORMAT(type);
type = ISAKMP_ATTR_TYPE(type);
value = attr + (fmt ?
ISAKMP_ATTR_LENGTH_VALUE_OFF :
ISAKMP_ATTR_VALUE_OFF);
len = (fmt ? ISAKMP_ATTR_LENGTH_VALUE_LEN :
GET_ISAKMP_ATTR_LENGTH_VALUE(attr));
if (value + len > proto->chosen->p +
GET_ISAKMP_GEN_LENGTH(proto->chosen->p))
return "";
switch (type) {
case IPSEC_ATTR_SA_LIFE_TYPE:
lifetype = decode_16(value);
break;
case IPSEC_ATTR_SA_LIFE_DURATION:
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
if (lifetype == IPSEC_DURATION_SECONDS) {
if (len == 2)
snprintf(ah_life_seconds, sizeof ah_life_seconds,
"%u", decode_16(value));
else
snprintf(ah_life_seconds, sizeof ah_life_seconds,
"%u", decode_32(value));
} else {
if (len == 2)
snprintf(ah_life_kbytes, sizeof ah_life_kbytes,
"%u", decode_16(value));
else
snprintf(ah_life_kbytes, sizeof ah_life_kbytes,
"%u", decode_32(value));
}
break;
case IPSEC_PROTO_IPSEC_ESP:
if (lifetype == IPSEC_DURATION_SECONDS) {
if (len == 2)
snprintf(esp_life_seconds,
sizeof esp_life_seconds, "%u",
decode_16(value));
else
snprintf(esp_life_seconds,
sizeof esp_life_seconds, "%u",
decode_32(value));
} else {
if (len == 2)
snprintf(esp_life_kbytes,
sizeof esp_life_kbytes, "%u",
decode_16(value));
else
snprintf(esp_life_kbytes,
sizeof esp_life_kbytes, "%u",
decode_32(value));
}
break;
case IPSEC_PROTO_IPCOMP:
if (lifetype == IPSEC_DURATION_SECONDS) {
if (len == 2)
snprintf(comp_life_seconds,
sizeof comp_life_seconds, "%u",
decode_16(value));
else
snprintf(comp_life_seconds,
sizeof comp_life_seconds, "%u",
decode_32(value));
} else {
if (len == 2)
snprintf(comp_life_kbytes,
sizeof comp_life_kbytes, "%u",
decode_16(value));
else
snprintf(comp_life_kbytes,
sizeof comp_life_kbytes, "%u",
decode_32(value));
}
break;
}
break;
case IPSEC_ATTR_GROUP_DESCRIPTION:
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
snprintf(ah_group_desc,
sizeof ah_group_desc, "%u",
decode_16(value));
break;
case IPSEC_PROTO_IPSEC_ESP:
snprintf(esp_group_desc,
sizeof esp_group_desc, "%u",
decode_16(value));
break;
case IPSEC_PROTO_IPCOMP:
snprintf(comp_group_desc,
sizeof comp_group_desc, "%u",
decode_16(value));
break;
}
break;
case IPSEC_ATTR_ECN_TUNNEL:
if (decode_16(value))
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
ah_ecn = "yes";
break;
case IPSEC_PROTO_IPSEC_ESP:
esp_ecn = "yes";
break;
case IPSEC_PROTO_IPCOMP:
comp_ecn = "yes";
break;
}
case IPSEC_ATTR_ENCAPSULATION_MODE:
if (decode_16(value) == IPSEC_ENCAP_TUNNEL)
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
ah_encapsulation = "tunnel";
break;
case IPSEC_PROTO_IPSEC_ESP:
esp_encapsulation = "tunnel";
break;
case IPSEC_PROTO_IPCOMP:
comp_encapsulation = "tunnel";
break;
}
else if (decode_16(value) ==
IPSEC_ENCAP_UDP_ENCAP_TUNNEL ||
decode_16(value) ==
IPSEC_ENCAP_UDP_ENCAP_TUNNEL_DRAFT)
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
ah_encapsulation = "udp-encap-tunnel";
break;
case IPSEC_PROTO_IPSEC_ESP:
esp_encapsulation = "udp-encap-tunnel";
break;
case IPSEC_PROTO_IPCOMP:
comp_encapsulation = "udp-encap-tunnel";
break;
}
/* XXX IPSEC_ENCAP_UDP_ENCAP_TRANSPORT */
else
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
ah_encapsulation = "transport";
break;
case IPSEC_PROTO_IPSEC_ESP:
esp_encapsulation = "transport";
break;
case IPSEC_PROTO_IPCOMP:
comp_encapsulation = "transport";
break;
}
break;
case IPSEC_ATTR_AUTHENTICATION_ALGORITHM:
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
switch (decode_16(value)) {
case IPSEC_AUTH_HMAC_MD5:
ah_auth_alg = "hmac-md5";
break;
case IPSEC_AUTH_HMAC_SHA:
ah_auth_alg = "hmac-sha";
break;
case IPSEC_AUTH_HMAC_RIPEMD:
ah_auth_alg = "hmac-ripemd";
break;
case IPSEC_AUTH_HMAC_SHA2_256:
ah_auth_alg = "hmac-sha2-256";
break;
case IPSEC_AUTH_HMAC_SHA2_384:
ah_auth_alg = "hmac-sha2-384";
break;
case IPSEC_AUTH_HMAC_SHA2_512:
ah_auth_alg = "hmac-sha2-512";
break;
case IPSEC_AUTH_DES_MAC:
ah_auth_alg = "des-mac";
break;
case IPSEC_AUTH_KPDK:
ah_auth_alg = "kpdk";
break;
}
break;
case IPSEC_PROTO_IPSEC_ESP:
switch (decode_16(value)) {
case IPSEC_AUTH_HMAC_MD5:
esp_auth_alg = "hmac-md5";
break;
case IPSEC_AUTH_HMAC_SHA:
esp_auth_alg = "hmac-sha";
break;
case IPSEC_AUTH_HMAC_RIPEMD:
esp_auth_alg = "hmac-ripemd";
break;
case IPSEC_AUTH_HMAC_SHA2_256:
esp_auth_alg = "hmac-sha2-256";
break;
case IPSEC_AUTH_HMAC_SHA2_384:
esp_auth_alg = "hmac-sha2-384";
break;
case IPSEC_AUTH_HMAC_SHA2_512:
esp_auth_alg = "hmac-sha2-512";
break;
case IPSEC_AUTH_DES_MAC:
esp_auth_alg = "des-mac";
break;
case IPSEC_AUTH_KPDK:
esp_auth_alg = "kpdk";
break;
}
break;
}
break;
case IPSEC_ATTR_KEY_LENGTH:
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
snprintf(ah_key_length,
sizeof ah_key_length, "%u",
decode_16(value));
break;
case IPSEC_PROTO_IPSEC_ESP:
snprintf(esp_key_length,
sizeof esp_key_length, "%u",
decode_16(value));
break;
}
break;
case IPSEC_ATTR_KEY_ROUNDS:
switch (proto->proto) {
case IPSEC_PROTO_IPSEC_AH:
snprintf(ah_key_rounds,
sizeof ah_key_rounds, "%u",
decode_16(value));
break;
case IPSEC_PROTO_IPSEC_ESP:
snprintf(esp_key_rounds,
sizeof esp_key_rounds, "%u",
decode_16(value));
break;
}
break;
case IPSEC_ATTR_COMPRESS_DICTIONARY_SIZE:
snprintf(comp_dict_size,
sizeof comp_dict_size, "%u",
decode_16(value));
break;
case IPSEC_ATTR_COMPRESS_PRIVATE_ALGORITHM:
snprintf(comp_private_alg,
sizeof comp_private_alg, "%u",
decode_16(value));
break;
}
}
}
policy_sa->transport->vtbl->get_src(policy_sa->transport,
&sin);
if (sockaddr2text(sin, &addr, 1)) {
log_error("policy_callback: sockaddr2text failed");
goto bad;
}
strlcpy(local_ike_address, addr, sizeof local_ike_address);
free(addr);
policy_sa->transport->vtbl->get_dst(policy_sa->transport,
&sin);
if (sockaddr2text(sin, &addr, 1)) {
log_error("policy_callback: sockaddr2text failed");
goto bad;
}
strlcpy(remote_ike_address, addr, sizeof remote_ike_address);
free(addr);
switch (policy_isakmp_sa->exch_type) {
case ISAKMP_EXCH_AGGRESSIVE:
phase_1 = "aggressive";
break;
case ISAKMP_EXCH_ID_PROT:
phase_1 = "main";
break;
}
if (policy_isakmp_sa->initiator) {
id = policy_isakmp_sa->id_r;
id_sz = policy_isakmp_sa->id_r_len;
} else {
id = policy_isakmp_sa->id_i;
id_sz = policy_isakmp_sa->id_i_len;
}
switch (id[0]) {
case IPSEC_ID_IPV4_ADDR:
remote_id_type = "IPv4 address";
net = decode_32(id + ISAKMP_ID_DATA_OFF -
ISAKMP_GEN_SZ);
my_inet_ntop4(&net, remote_id_addr_upper,
sizeof remote_id_addr_upper - 1, 1);
my_inet_ntop4(&net, remote_id_addr_lower,
sizeof remote_id_addr_lower - 1, 1);
remote_id = strdup(remote_id_addr_upper);
if (!remote_id) {
log_error("policy_callback: "
"strdup (\"%s\") failed",
remote_id_addr_upper);
goto bad;
}
break;
case IPSEC_ID_IPV4_RANGE:
remote_id_type = "IPv4 range";
net = decode_32(id + ISAKMP_ID_DATA_OFF -
ISAKMP_GEN_SZ);
my_inet_ntop4(&net, remote_id_addr_lower,
sizeof remote_id_addr_lower - 1, 1);
net = decode_32(id + ISAKMP_ID_DATA_OFF -
ISAKMP_GEN_SZ + 4);
my_inet_ntop4(&net, remote_id_addr_upper,
sizeof remote_id_addr_upper - 1, 1);
len = strlen(remote_id_addr_upper) +
strlen(remote_id_addr_lower) + 2;
remote_id = calloc(len, sizeof(char));
if (!remote_id) {
log_error("policy_callback: "
"calloc (%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(remote_id, remote_id_addr_lower, len);
strlcat(remote_id, "-", len);
strlcat(remote_id, remote_id_addr_upper, len);
break;
case IPSEC_ID_IPV4_ADDR_SUBNET:
remote_id_type = "IPv4 subnet";
net = decode_32(id + ISAKMP_ID_DATA_OFF -
ISAKMP_GEN_SZ);
subnet = decode_32(id + ISAKMP_ID_DATA_OFF -
ISAKMP_GEN_SZ + 4);
net &= subnet;
my_inet_ntop4(&net, remote_id_addr_lower,
sizeof remote_id_addr_lower - 1, 1);
net |= ~subnet;
my_inet_ntop4(&net, remote_id_addr_upper,
sizeof remote_id_addr_upper - 1, 1);
len = strlen(remote_id_addr_upper) +
strlen(remote_id_addr_lower) + 2;
remote_id = calloc(len, sizeof(char));
if (!remote_id) {
log_error("policy_callback: "
"calloc (%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(remote_id, remote_id_addr_lower, len);
strlcat(remote_id, "-", len);
strlcat(remote_id, remote_id_addr_upper, len);
break;
case IPSEC_ID_IPV6_ADDR:
remote_id_type = "IPv6 address";
my_inet_ntop6(id + ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ,
remote_id_addr_upper, sizeof remote_id_addr_upper);
strlcpy(remote_id_addr_lower, remote_id_addr_upper,
sizeof remote_id_addr_lower);
remote_id = strdup(remote_id_addr_upper);
if (!remote_id) {
log_error("policy_callback: "
"strdup (\"%s\") failed",
remote_id_addr_upper);
goto bad;
}
break;
case IPSEC_ID_IPV6_RANGE:
remote_id_type = "IPv6 range";
my_inet_ntop6(id + ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ,
remote_id_addr_lower,
sizeof remote_id_addr_lower - 1);
my_inet_ntop6(id + ISAKMP_ID_DATA_OFF -
ISAKMP_GEN_SZ + 16, remote_id_addr_upper,
sizeof remote_id_addr_upper - 1);
len = strlen(remote_id_addr_upper) +
strlen(remote_id_addr_lower) + 2;
remote_id = calloc(len, sizeof(char));
if (!remote_id) {
log_error("policy_callback: "
"calloc (%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(remote_id, remote_id_addr_lower, len);
strlcat(remote_id, "-", len);
strlcat(remote_id, remote_id_addr_upper, len);
break;
case IPSEC_ID_IPV6_ADDR_SUBNET:
{
struct in6_addr net, mask;
remote_id_type = "IPv6 subnet";
bcopy(id + ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ, &net,
sizeof(net));
bcopy(id + ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ + 16,
&mask, sizeof(mask));
for (i = 0; i < 16; i++)
net.s6_addr[i] &= mask.s6_addr[i];
my_inet_ntop6((unsigned char *)&net,
remote_id_addr_lower,
sizeof remote_id_addr_lower - 1);
for (i = 0; i < 16; i++)
net.s6_addr[i] |= ~mask.s6_addr[i];
my_inet_ntop6((unsigned char *)&net,
remote_id_addr_upper,
sizeof remote_id_addr_upper - 1);
len = strlen(remote_id_addr_upper) +
strlen(remote_id_addr_lower) + 2;
remote_id = calloc(len, sizeof(char));
if (!remote_id) {
log_error("policy_callback: "
"calloc (%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(remote_id, remote_id_addr_lower, len);
strlcat(remote_id, "-", len);
strlcat(remote_id, remote_id_addr_upper, len);
break;
}
case IPSEC_ID_FQDN:
remote_id_type = "FQDN";
remote_id = calloc(id_sz - ISAKMP_ID_DATA_OFF +
ISAKMP_GEN_SZ + 1, sizeof(char));
if (!remote_id) {
log_error("policy_callback: "
"calloc (%lu, %lu) failed",
(unsigned long)id_sz - ISAKMP_ID_DATA_OFF +
ISAKMP_GEN_SZ + 1,
(unsigned long)sizeof(char));
goto bad;
}
memcpy(remote_id,
id + ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ,
id_sz - ISAKMP_ID_DATA_OFF + ISAKMP_GEN_SZ);
break;
case IPSEC_ID_USER_FQDN:
remote_id_type = "User FQDN";
remote_id = calloc(id_sz - ISAKMP_ID_DATA_OFF +
ISAKMP_GEN_SZ + 1, sizeof(char));
if (!remote_id) {
log_error("policy_callback: "
"calloc (%lu, %lu) failed",
(unsigned long)id_sz - ISAKMP_ID_DATA_OFF +
ISAKMP_GEN_SZ + 1,
(unsigned long)sizeof(char));
goto bad;
}
memcpy(remote_id,
id + ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ,
id_sz - ISAKMP_ID_DATA_OFF + ISAKMP_GEN_SZ);
break;
case IPSEC_ID_DER_ASN1_DN:
remote_id_type = "ASN1 DN";
remote_id = x509_DN_string(id + ISAKMP_ID_DATA_OFF -
ISAKMP_GEN_SZ,
id_sz - ISAKMP_ID_DATA_OFF + ISAKMP_GEN_SZ);
if (!remote_id) {
LOG_DBG((LOG_POLICY, 50,
"policy_callback: failed to decode name"));
goto bad;
}
break;
case IPSEC_ID_DER_ASN1_GN: /* XXX */
remote_id_type = "ASN1 GN";
break;
case IPSEC_ID_KEY_ID:
remote_id_type = "Key ID";
remote_id = calloc(2 * (id_sz - ISAKMP_ID_DATA_OFF +
ISAKMP_GEN_SZ) + 1, sizeof(char));
if (!remote_id) {
log_error("policy_callback: "
"calloc (%lu, %lu) failed",
2 * ((unsigned long)id_sz -
ISAKMP_ID_DATA_OFF + ISAKMP_GEN_SZ) + 1,
(unsigned long)sizeof(char));
goto bad;
}
/* Does it contain any non-printable characters ? */
for (i = 0;
i < id_sz - ISAKMP_ID_DATA_OFF + ISAKMP_GEN_SZ;
i++)
if (!isprint((unsigned char)*(id + ISAKMP_ID_DATA_OFF -
ISAKMP_GEN_SZ + i)))
break;
if (i >= id_sz - ISAKMP_ID_DATA_OFF + ISAKMP_GEN_SZ) {
memcpy(remote_id, id + ISAKMP_ID_DATA_OFF -
ISAKMP_GEN_SZ,
id_sz - ISAKMP_ID_DATA_OFF +
ISAKMP_GEN_SZ);
break;
}
/* Non-printable characters, convert to hex */
for (i = 0;
i < id_sz - ISAKMP_ID_DATA_OFF + ISAKMP_GEN_SZ;
i++) {
remote_id[2 * i] = hextab[*(id +
ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ) >> 4];
remote_id[2 * i + 1] = hextab[*(id +
ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ) & 0xF];
}
break;
default:
log_print("policy_callback: "
"unknown remote ID type %u", id[0]);
goto bad;
}
switch (id[1]) {
case IPPROTO_TCP:
remote_id_proto = "tcp";
break;
case IPPROTO_UDP:
remote_id_proto = "udp";
break;
case IPPROTO_ETHERIP:
remote_id_proto = "etherip";
break;
default:
snprintf(remote_id_proto_num,
sizeof remote_id_proto_num, "%d",
id[1]);
remote_id_proto = remote_id_proto_num;
break;
}
snprintf(remote_id_port, sizeof remote_id_port, "%u",
decode_16(id + 2));
if (policy_exchange->initiator) {
initiator = "yes";
idlocal = ie->id_ci;
idremote = ie->id_cr;
idlocalsz = ie->id_ci_sz;
idremotesz = ie->id_cr_sz;
} else {
initiator = "no";
idlocal = ie->id_cr;
idremote = ie->id_ci;
idlocalsz = ie->id_cr_sz;
idremotesz = ie->id_ci_sz;
}
/* Initialize the ID variables. */
if (idremote) {
switch (GET_ISAKMP_ID_TYPE(idremote)) {
case IPSEC_ID_IPV4_ADDR:
remote_filter_type = "IPv4 address";
net = decode_32(idremote + ISAKMP_ID_DATA_OFF);
my_inet_ntop4(&net, remote_filter_addr_upper,
sizeof remote_filter_addr_upper - 1, 1);
my_inet_ntop4(&net, remote_filter_addr_lower,
sizeof remote_filter_addr_lower - 1, 1);
remote_filter =
strdup(remote_filter_addr_upper);
if (!remote_filter) {
log_error("policy_callback: strdup "
"(\"%s\") failed",
remote_filter_addr_upper);
goto bad;
}
break;
case IPSEC_ID_IPV4_RANGE:
remote_filter_type = "IPv4 range";
net = decode_32(idremote + ISAKMP_ID_DATA_OFF);
my_inet_ntop4(&net, remote_filter_addr_lower,
sizeof remote_filter_addr_lower - 1, 1);
net = decode_32(idremote + ISAKMP_ID_DATA_OFF +
4);
my_inet_ntop4(&net, remote_filter_addr_upper,
sizeof remote_filter_addr_upper - 1, 1);
len = strlen(remote_filter_addr_upper) +
strlen(remote_filter_addr_lower) + 2;
remote_filter = calloc(len, sizeof(char));
if (!remote_filter) {
log_error("policy_callback: calloc "
"(%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(remote_filter,
remote_filter_addr_lower, len);
strlcat(remote_filter, "-", len);
strlcat(remote_filter,
remote_filter_addr_upper, len);
break;
case IPSEC_ID_IPV4_ADDR_SUBNET:
remote_filter_type = "IPv4 subnet";
net = decode_32(idremote + ISAKMP_ID_DATA_OFF);
subnet = decode_32(idremote +
ISAKMP_ID_DATA_OFF + 4);
net &= subnet;
my_inet_ntop4(&net, remote_filter_addr_lower,
sizeof remote_filter_addr_lower - 1, 1);
net |= ~subnet;
my_inet_ntop4(&net, remote_filter_addr_upper,
sizeof remote_filter_addr_upper - 1, 1);
len = strlen(remote_filter_addr_upper) +
strlen(remote_filter_addr_lower) + 2;
remote_filter = calloc(len, sizeof(char));
if (!remote_filter) {
log_error("policy_callback: calloc "
"(%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(remote_filter,
remote_filter_addr_lower, len);
strlcat(remote_filter, "-", len);
strlcat(remote_filter,
remote_filter_addr_upper, len);
break;
case IPSEC_ID_IPV6_ADDR:
remote_filter_type = "IPv6 address";
my_inet_ntop6(idremote + ISAKMP_ID_DATA_OFF,
remote_filter_addr_upper,
sizeof remote_filter_addr_upper - 1);
strlcpy(remote_filter_addr_lower,
remote_filter_addr_upper,
sizeof remote_filter_addr_lower);
remote_filter =
strdup(remote_filter_addr_upper);
if (!remote_filter) {
log_error("policy_callback: strdup "
"(\"%s\") failed",
remote_filter_addr_upper);
goto bad;
}
break;
case IPSEC_ID_IPV6_RANGE:
remote_filter_type = "IPv6 range";
my_inet_ntop6(idremote + ISAKMP_ID_DATA_OFF,
remote_filter_addr_lower,
sizeof remote_filter_addr_lower - 1);
my_inet_ntop6(idremote + ISAKMP_ID_DATA_OFF +
16, remote_filter_addr_upper,
sizeof remote_filter_addr_upper - 1);
len = strlen(remote_filter_addr_upper) +
strlen(remote_filter_addr_lower) + 2;
remote_filter = calloc(len, sizeof(char));
if (!remote_filter) {
log_error("policy_callback: calloc "
"(%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(remote_filter,
remote_filter_addr_lower, len);
strlcat(remote_filter, "-", len);
strlcat(remote_filter,
remote_filter_addr_upper, len);
break;
case IPSEC_ID_IPV6_ADDR_SUBNET:
{
struct in6_addr net, mask;
remote_filter_type = "IPv6 subnet";
bcopy(idremote + ISAKMP_ID_DATA_OFF,
&net, sizeof(net));
bcopy(idremote + ISAKMP_ID_DATA_OFF +
16, &mask, sizeof(mask));
for (i = 0; i < 16; i++)
net.s6_addr[i] &=
mask.s6_addr[i];
my_inet_ntop6((unsigned char *)&net,
remote_filter_addr_lower,
sizeof remote_filter_addr_lower - 1);
for (i = 0; i < 16; i++)
net.s6_addr[i] |=
~mask.s6_addr[i];
my_inet_ntop6((unsigned char *)&net,
remote_filter_addr_upper,
sizeof remote_filter_addr_upper - 1);
len = strlen(remote_filter_addr_upper)
+ strlen(remote_filter_addr_lower) + 2;
remote_filter = calloc(len,
sizeof(char));
if (!remote_filter) {
log_error("policy_callback: "
"calloc (%d, %lu) failed",
len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(remote_filter,
remote_filter_addr_lower, len);
strlcat(remote_filter, "-", len);
strlcat(remote_filter,
remote_filter_addr_upper, len);
break;
}
case IPSEC_ID_FQDN:
remote_filter_type = "FQDN";
remote_filter = malloc(idremotesz -
ISAKMP_ID_DATA_OFF + 1);
if (!remote_filter) {
log_error("policy_callback: "
"malloc (%lu) failed",
(unsigned long)idremotesz -
ISAKMP_ID_DATA_OFF + 1);
goto bad;
}
memcpy(remote_filter,
idremote + ISAKMP_ID_DATA_OFF,
idremotesz - ISAKMP_ID_DATA_OFF);
remote_filter[idremotesz - ISAKMP_ID_DATA_OFF]
= '\0';
break;
case IPSEC_ID_USER_FQDN:
remote_filter_type = "User FQDN";
remote_filter = malloc(idremotesz -
ISAKMP_ID_DATA_OFF + 1);
if (!remote_filter) {
log_error("policy_callback: "
"malloc (%lu) failed",
(unsigned long)idremotesz -
ISAKMP_ID_DATA_OFF + 1);
goto bad;
}
memcpy(remote_filter,
idremote + ISAKMP_ID_DATA_OFF,
idremotesz - ISAKMP_ID_DATA_OFF);
remote_filter[idremotesz - ISAKMP_ID_DATA_OFF]
= '\0';
break;
case IPSEC_ID_DER_ASN1_DN:
remote_filter_type = "ASN1 DN";
remote_filter = x509_DN_string(idremote +
ISAKMP_ID_DATA_OFF,
idremotesz - ISAKMP_ID_DATA_OFF);
if (!remote_filter) {
LOG_DBG((LOG_POLICY, 50,
"policy_callback: "
"failed to decode name"));
goto bad;
}
break;
case IPSEC_ID_DER_ASN1_GN: /* XXX -- not sure
* what's in this. */
remote_filter_type = "ASN1 GN";
break;
case IPSEC_ID_KEY_ID:
remote_filter_type = "Key ID";
remote_filter
= calloc(2 * (idremotesz -
ISAKMP_ID_DATA_OFF) + 1,
sizeof(char));
if (!remote_filter) {
log_error("policy_callback: "
"calloc (%lu, %lu) failed",
2 * ((unsigned long)idremotesz -
ISAKMP_ID_DATA_OFF) + 1,
(unsigned long)sizeof(char));
goto bad;
}
/*
* Does it contain any non-printable
* characters ?
*/
for (i = 0;
i < idremotesz - ISAKMP_ID_DATA_OFF; i++)
if (!isprint((unsigned char)*(idremote +
ISAKMP_ID_DATA_OFF + i)))
break;
if (i >= idremotesz - ISAKMP_ID_DATA_OFF) {
memcpy(remote_filter,
idremote + ISAKMP_ID_DATA_OFF,
idremotesz - ISAKMP_ID_DATA_OFF);
break;
}
/* Non-printable characters, convert to hex */
for (i = 0;
i < idremotesz - ISAKMP_ID_DATA_OFF;
i++) {
remote_filter[2 * i]
= hextab[*(idremote +
ISAKMP_ID_DATA_OFF) >> 4];
remote_filter[2 * i + 1]
= hextab[*(idremote +
ISAKMP_ID_DATA_OFF) & 0xF];
}
break;
default:
log_print("policy_callback: "
"unknown Remote ID type %u",
GET_ISAKMP_ID_TYPE(idremote));
goto bad;
}
switch (idremote[ISAKMP_GEN_SZ + 1]) {
case IPPROTO_TCP:
remote_filter_proto = "tcp";
break;
case IPPROTO_UDP:
remote_filter_proto = "udp";
break;
case IPPROTO_ETHERIP:
remote_filter_proto = "etherip";
break;
default:
snprintf(remote_filter_proto_num,
sizeof remote_filter_proto_num, "%d",
idremote[ISAKMP_GEN_SZ + 1]);
remote_filter_proto = remote_filter_proto_num;
break;
}
snprintf(remote_filter_port, sizeof remote_filter_port,
"%u", decode_16(idremote + ISAKMP_GEN_SZ + 2));
} else {
policy_sa->transport->vtbl->get_dst(policy_sa->transport, &sin);
switch (sin->sa_family) {
case AF_INET:
remote_filter_type = "IPv4 address";
break;
case AF_INET6:
remote_filter_type = "IPv6 address";
break;
default:
log_print("policy_callback: "
"unsupported protocol family %d",
sin->sa_family);
goto bad;
}
if (sockaddr2text(sin, &addr, 1)) {
log_error("policy_callback: "
"sockaddr2text failed");
goto bad;
}
memcpy(remote_filter_addr_upper, addr,
sizeof remote_filter_addr_upper);
memcpy(remote_filter_addr_lower, addr,
sizeof remote_filter_addr_lower);
free(addr);
remote_filter = strdup(remote_filter_addr_upper);
if (!remote_filter) {
log_error("policy_callback: "
"strdup (\"%s\") failed",
remote_filter_addr_upper);
goto bad;
}
}
if (idlocal) {
switch (GET_ISAKMP_ID_TYPE(idlocal)) {
case IPSEC_ID_IPV4_ADDR:
local_filter_type = "IPv4 address";
net = decode_32(idlocal + ISAKMP_ID_DATA_OFF);
my_inet_ntop4(&net, local_filter_addr_upper,
sizeof local_filter_addr_upper - 1, 1);
my_inet_ntop4(&net, local_filter_addr_lower,
sizeof local_filter_addr_upper - 1, 1);
local_filter = strdup(local_filter_addr_upper);
if (!local_filter) {
log_error("policy_callback: "
"strdup (\"%s\") failed",
local_filter_addr_upper);
goto bad;
}
break;
case IPSEC_ID_IPV4_RANGE:
local_filter_type = "IPv4 range";
net = decode_32(idlocal + ISAKMP_ID_DATA_OFF);
my_inet_ntop4(&net, local_filter_addr_lower,
sizeof local_filter_addr_lower - 1, 1);
net = decode_32(idlocal + ISAKMP_ID_DATA_OFF +
4);
my_inet_ntop4(&net, local_filter_addr_upper,
sizeof local_filter_addr_upper - 1, 1);
len = strlen(local_filter_addr_upper)
+ strlen(local_filter_addr_lower) + 2;
local_filter = calloc(len, sizeof(char));
if (!local_filter) {
log_error("policy_callback: "
"calloc (%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(local_filter, local_filter_addr_lower,
len);
strlcat(local_filter, "-", len);
strlcat(local_filter, local_filter_addr_upper,
len);
break;
case IPSEC_ID_IPV4_ADDR_SUBNET:
local_filter_type = "IPv4 subnet";
net = decode_32(idlocal + ISAKMP_ID_DATA_OFF);
subnet = decode_32(idlocal +
ISAKMP_ID_DATA_OFF + 4);
net &= subnet;
my_inet_ntop4(&net, local_filter_addr_lower,
sizeof local_filter_addr_lower - 1, 1);
net |= ~subnet;
my_inet_ntop4(&net, local_filter_addr_upper,
sizeof local_filter_addr_upper - 1, 1);
len = strlen(local_filter_addr_upper) +
strlen(local_filter_addr_lower) + 2;
local_filter = calloc(len, sizeof(char));
if (!local_filter) {
log_error("policy_callback: "
"calloc (%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(local_filter, local_filter_addr_lower,
len);
strlcat(local_filter, "-", len);
strlcat(local_filter, local_filter_addr_upper,
len);
break;
case IPSEC_ID_IPV6_ADDR:
local_filter_type = "IPv6 address";
my_inet_ntop6(idlocal + ISAKMP_ID_DATA_OFF,
local_filter_addr_upper,
sizeof local_filter_addr_upper - 1);
strlcpy(local_filter_addr_lower,
local_filter_addr_upper,
sizeof local_filter_addr_lower);
local_filter = strdup(local_filter_addr_upper);
if (!local_filter) {
log_error("policy_callback: "
"strdup (\"%s\") failed",
local_filter_addr_upper);
goto bad;
}
break;
case IPSEC_ID_IPV6_RANGE:
local_filter_type = "IPv6 range";
my_inet_ntop6(idlocal + ISAKMP_ID_DATA_OFF,
local_filter_addr_lower,
sizeof local_filter_addr_lower - 1);
my_inet_ntop6(idlocal + ISAKMP_ID_DATA_OFF +
16, local_filter_addr_upper,
sizeof local_filter_addr_upper - 1);
len = strlen(local_filter_addr_upper)
+ strlen(local_filter_addr_lower) + 2;
local_filter = calloc(len, sizeof(char));
if (!local_filter) {
log_error("policy_callback: "
"calloc (%d, %lu) failed", len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(local_filter, local_filter_addr_lower,
len);
strlcat(local_filter, "-", len);
strlcat(local_filter, local_filter_addr_upper,
len);
break;
case IPSEC_ID_IPV6_ADDR_SUBNET:
{
struct in6_addr net, mask;
local_filter_type = "IPv6 subnet";
bcopy(idlocal + ISAKMP_ID_DATA_OFF,
&net, sizeof(net));
bcopy(idlocal + ISAKMP_ID_DATA_OFF +
16, &mask, sizeof(mask));
for (i = 0; i < 16; i++)
net.s6_addr[i] &=
mask.s6_addr[i];
my_inet_ntop6((unsigned char *)&net,
local_filter_addr_lower,
sizeof local_filter_addr_lower - 1);
for (i = 0; i < 16; i++)
net.s6_addr[i] |=
~mask.s6_addr[i];
my_inet_ntop6((unsigned char *)&net,
local_filter_addr_upper,
sizeof local_filter_addr_upper -
1);
len = strlen(local_filter_addr_upper)
+ strlen(local_filter_addr_lower)
+ 2;
local_filter = calloc(len,
sizeof(char));
if (!local_filter) {
log_error("policy_callback: "
"calloc (%d, %lu) failed",
len,
(unsigned long)sizeof(char));
goto bad;
}
strlcpy(local_filter,
local_filter_addr_lower, len);
strlcat(local_filter, "-", len);
strlcat(local_filter,
local_filter_addr_upper, len);
break;
}
case IPSEC_ID_FQDN:
local_filter_type = "FQDN";
local_filter = malloc(idlocalsz -
ISAKMP_ID_DATA_OFF + 1);
if (!local_filter) {
log_error("policy_callback: "
"malloc (%lu) failed",
(unsigned long)idlocalsz -
ISAKMP_ID_DATA_OFF + 1);
goto bad;
}
memcpy(local_filter,
idlocal + ISAKMP_ID_DATA_OFF,
idlocalsz - ISAKMP_ID_DATA_OFF);
local_filter[idlocalsz - ISAKMP_ID_DATA_OFF] = '\0';
break;
case IPSEC_ID_USER_FQDN:
local_filter_type = "User FQDN";
local_filter = malloc(idlocalsz -
ISAKMP_ID_DATA_OFF + 1);
if (!local_filter) {
log_error("policy_callback: "
"malloc (%lu) failed",
(unsigned long)idlocalsz -
ISAKMP_ID_DATA_OFF + 1);
goto bad;
}
memcpy(local_filter,
idlocal + ISAKMP_ID_DATA_OFF,
idlocalsz - ISAKMP_ID_DATA_OFF);
local_filter[idlocalsz - ISAKMP_ID_DATA_OFF] = '\0';
break;
case IPSEC_ID_DER_ASN1_DN:
local_filter_type = "ASN1 DN";
local_filter = x509_DN_string(idlocal +
ISAKMP_ID_DATA_OFF,
idlocalsz - ISAKMP_ID_DATA_OFF);
if (!local_filter) {
LOG_DBG((LOG_POLICY, 50,
"policy_callback: failed to decode"
" name"));
goto bad;
}
break;
case IPSEC_ID_DER_ASN1_GN:
/* XXX -- not sure what's in this. */
local_filter_type = "ASN1 GN";
break;
case IPSEC_ID_KEY_ID:
local_filter_type = "Key ID";
local_filter = calloc(2 * (idlocalsz -
ISAKMP_ID_DATA_OFF) + 1,
sizeof(char));
if (!local_filter) {
log_error("policy_callback: "
"calloc (%lu, %lu) failed",
2 * ((unsigned long)idlocalsz -
ISAKMP_ID_DATA_OFF) + 1,
(unsigned long)sizeof(char));
goto bad;
}
/*
* Does it contain any non-printable
* characters ?
*/
for (i = 0;
i < idlocalsz - ISAKMP_ID_DATA_OFF; i++)
if (!isprint((unsigned char)*(idlocal +
ISAKMP_ID_DATA_OFF + i)))
break;
if (i >= idlocalsz - ISAKMP_ID_DATA_OFF) {
memcpy(local_filter, idlocal +
ISAKMP_ID_DATA_OFF,
idlocalsz - ISAKMP_ID_DATA_OFF);
break;
}
/* Non-printable characters, convert to hex */
for (i = 0;
i < idlocalsz - ISAKMP_ID_DATA_OFF; i++) {
local_filter[2 * i] =
hextab[*(idlocal +
ISAKMP_ID_DATA_OFF) >> 4];
local_filter[2 * i + 1] =
hextab[*(idlocal +
ISAKMP_ID_DATA_OFF) & 0xF];
}
break;
default:
log_print("policy_callback: "
"unknown Local ID type %u",
GET_ISAKMP_ID_TYPE(idlocal));
goto bad;
}
switch (idlocal[ISAKMP_GEN_SZ + 1]) {
case IPPROTO_TCP:
local_filter_proto = "tcp";
break;
case IPPROTO_UDP:
local_filter_proto = "udp";
break;
case IPPROTO_ETHERIP:
local_filter_proto = "etherip";
break;
default:
snprintf(local_filter_proto_num,
sizeof local_filter_proto_num,
"%d", idlocal[ISAKMP_GEN_SZ + 1]);
local_filter_proto = local_filter_proto_num;
break;
}
snprintf(local_filter_port, sizeof local_filter_port,
"%u", decode_16(idlocal + ISAKMP_GEN_SZ + 2));
} else {
policy_sa->transport->vtbl->get_src(policy_sa->transport,
(struct sockaddr **)&sin);
switch (sin->sa_family) {
case AF_INET:
local_filter_type = "IPv4 address";
break;
case AF_INET6:
local_filter_type = "IPv6 address";
break;
default:
log_print("policy_callback: "
"unsupported protocol family %d",
sin->sa_family);
goto bad;
}
if (sockaddr2text(sin, &addr, 1)) {
log_error("policy_callback: "
"sockaddr2text failed");
goto bad;
}
memcpy(local_filter_addr_upper, addr,
sizeof local_filter_addr_upper);
memcpy(local_filter_addr_lower, addr,
sizeof local_filter_addr_lower);
free(addr);
local_filter = strdup(local_filter_addr_upper);
if (!local_filter) {
log_error("policy_callback: "
"strdup (\"%s\") failed",
local_filter_addr_upper);
goto bad;
}
}
LOG_DBG((LOG_POLICY, 80,
"Policy context (action attributes):"));
LOG_DBG((LOG_POLICY, 80, "esp_present == %s", esp_present));
LOG_DBG((LOG_POLICY, 80, "ah_present == %s", ah_present));
LOG_DBG((LOG_POLICY, 80, "comp_present == %s", comp_present));
LOG_DBG((LOG_POLICY, 80, "ah_hash_alg == %s", ah_hash_alg));
LOG_DBG((LOG_POLICY, 80, "esp_enc_alg == %s", esp_enc_alg));
LOG_DBG((LOG_POLICY, 80, "comp_alg == %s", comp_alg));
LOG_DBG((LOG_POLICY, 80, "ah_auth_alg == %s", ah_auth_alg));
LOG_DBG((LOG_POLICY, 80, "esp_auth_alg == %s", esp_auth_alg));
LOG_DBG((LOG_POLICY, 80, "ah_life_seconds == %s",
ah_life_seconds));
LOG_DBG((LOG_POLICY, 80, "ah_life_kbytes == %s",
ah_life_kbytes));
LOG_DBG((LOG_POLICY, 80, "esp_life_seconds == %s",
esp_life_seconds));
LOG_DBG((LOG_POLICY, 80, "esp_life_kbytes == %s",
esp_life_kbytes));
LOG_DBG((LOG_POLICY, 80, "comp_life_seconds == %s",
comp_life_seconds));
LOG_DBG((LOG_POLICY, 80, "comp_life_kbytes == %s",
comp_life_kbytes));
LOG_DBG((LOG_POLICY, 80, "ah_encapsulation == %s",
ah_encapsulation));
LOG_DBG((LOG_POLICY, 80, "esp_encapsulation == %s",
esp_encapsulation));
LOG_DBG((LOG_POLICY, 80, "comp_encapsulation == %s",
comp_encapsulation));
LOG_DBG((LOG_POLICY, 80, "comp_dict_size == %s",
comp_dict_size));
LOG_DBG((LOG_POLICY, 80, "comp_private_alg == %s",
comp_private_alg));
LOG_DBG((LOG_POLICY, 80, "ah_key_length == %s",
ah_key_length));
LOG_DBG((LOG_POLICY, 80, "ah_key_rounds == %s",
ah_key_rounds));
LOG_DBG((LOG_POLICY, 80, "esp_key_length == %s",
esp_key_length));
LOG_DBG((LOG_POLICY, 80, "esp_key_rounds == %s",
esp_key_rounds));
LOG_DBG((LOG_POLICY, 80, "ah_group_desc == %s",
ah_group_desc));
LOG_DBG((LOG_POLICY, 80, "esp_group_desc == %s",
esp_group_desc));
LOG_DBG((LOG_POLICY, 80, "comp_group_desc == %s",
comp_group_desc));
LOG_DBG((LOG_POLICY, 80, "ah_ecn == %s", ah_ecn));
LOG_DBG((LOG_POLICY, 80, "esp_ecn == %s", esp_ecn));
LOG_DBG((LOG_POLICY, 80, "comp_ecn == %s", comp_ecn));
LOG_DBG((LOG_POLICY, 80, "remote_filter_type == %s",
remote_filter_type));
LOG_DBG((LOG_POLICY, 80, "remote_filter_addr_upper == %s",
remote_filter_addr_upper));
LOG_DBG((LOG_POLICY, 80, "remote_filter_addr_lower == %s",
remote_filter_addr_lower));
LOG_DBG((LOG_POLICY, 80, "remote_filter == %s",
(remote_filter ? remote_filter : "")));
LOG_DBG((LOG_POLICY, 80, "remote_filter_port == %s",
remote_filter_port));
LOG_DBG((LOG_POLICY, 80, "remote_filter_proto == %s",
remote_filter_proto));
LOG_DBG((LOG_POLICY, 80, "local_filter_type == %s",
local_filter_type));
LOG_DBG((LOG_POLICY, 80, "local_filter_addr_upper == %s",
local_filter_addr_upper));
LOG_DBG((LOG_POLICY, 80, "local_filter_addr_lower == %s",
local_filter_addr_lower));
LOG_DBG((LOG_POLICY, 80, "local_filter == %s",
(local_filter ? local_filter : "")));
LOG_DBG((LOG_POLICY, 80, "local_filter_port == %s",
local_filter_port));
LOG_DBG((LOG_POLICY, 80, "local_filter_proto == %s",
local_filter_proto));
LOG_DBG((LOG_POLICY, 80, "remote_id_type == %s",
remote_id_type));
LOG_DBG((LOG_POLICY, 80, "remote_id_addr_upper == %s",
remote_id_addr_upper));
LOG_DBG((LOG_POLICY, 80, "remote_id_addr_lower == %s",
remote_id_addr_lower));
LOG_DBG((LOG_POLICY, 80, "remote_id == %s",
(remote_id ? remote_id : "")));
LOG_DBG((LOG_POLICY, 80, "remote_id_port == %s",
remote_id_port));
LOG_DBG((LOG_POLICY, 80, "remote_id_proto == %s",
remote_id_proto));
LOG_DBG((LOG_POLICY, 80, "remote_negotiation_address == %s",
remote_ike_address));
LOG_DBG((LOG_POLICY, 80, "local_negotiation_address == %s",
local_ike_address));
LOG_DBG((LOG_POLICY, 80, "pfs == %s", pfs));
LOG_DBG((LOG_POLICY, 80, "initiator == %s", initiator));
LOG_DBG((LOG_POLICY, 80, "phase1_group_desc == %s",
phase1_group));
/* Unset dirty now. */
dirty = 0;
}
if (strcmp(name, "phase_1") == 0)
return phase_1;
if (strcmp(name, "GMTTimeOfDay") == 0) {
struct tm *tm;
tt = time(NULL);
if ((tm = gmtime(&tt)) == NULL) {
log_error("policy_callback: invalid time %lld", tt);
goto bad;
}
strftime(mytimeofday, 14, "%Y%m%d%H%M%S", tm);
return mytimeofday;
}
if (strcmp(name, "LocalTimeOfDay") == 0) {
struct tm *tm;
tt = time(NULL);
if ((tm = localtime(&tt)) == NULL) {
log_error("policy_callback: invalid time %lld", tt);
goto bad;
}
strftime(mytimeofday, 14, "%Y%m%d%H%M%S", tm);
return mytimeofday;
}
if (strcmp(name, "initiator") == 0)
return initiator;
if (strcmp(name, "pfs") == 0)
return pfs;
if (strcmp(name, "app_domain") == 0)
return "IPsec policy";
if (strcmp(name, "doi") == 0)
return "ipsec";
if (strcmp(name, "esp_present") == 0)
return esp_present;
if (strcmp(name, "ah_present") == 0)
return ah_present;
if (strcmp(name, "comp_present") == 0)
return comp_present;
if (strcmp(name, "ah_hash_alg") == 0)
return ah_hash_alg;
if (strcmp(name, "ah_auth_alg") == 0)
return ah_auth_alg;
if (strcmp(name, "esp_auth_alg") == 0)
return esp_auth_alg;
if (strcmp(name, "esp_enc_alg") == 0)
return esp_enc_alg;
if (strcmp(name, "comp_alg") == 0)
return comp_alg;
if (strcmp(name, "ah_life_kbytes") == 0)
return ah_life_kbytes;
if (strcmp(name, "ah_life_seconds") == 0)
return ah_life_seconds;
if (strcmp(name, "esp_life_kbytes") == 0)
return esp_life_kbytes;
if (strcmp(name, "esp_life_seconds") == 0)
return esp_life_seconds;
if (strcmp(name, "comp_life_kbytes") == 0)
return comp_life_kbytes;
if (strcmp(name, "comp_life_seconds") == 0)
return comp_life_seconds;
if (strcmp(name, "ah_encapsulation") == 0)
return ah_encapsulation;
if (strcmp(name, "esp_encapsulation") == 0)
return esp_encapsulation;
if (strcmp(name, "comp_encapsulation") == 0)
return comp_encapsulation;
if (strcmp(name, "ah_key_length") == 0)
return ah_key_length;
if (strcmp(name, "ah_key_rounds") == 0)
return ah_key_rounds;
if (strcmp(name, "esp_key_length") == 0)
return esp_key_length;
if (strcmp(name, "esp_key_rounds") == 0)
return esp_key_rounds;
if (strcmp(name, "comp_dict_size") == 0)
return comp_dict_size;
if (strcmp(name, "comp_private_alg") == 0)
return comp_private_alg;
if (strcmp(name, "remote_filter_type") == 0)
return remote_filter_type;
if (strcmp(name, "remote_filter") == 0)
return (remote_filter ? remote_filter : "");
if (strcmp(name, "remote_filter_addr_upper") == 0)
return remote_filter_addr_upper;
if (strcmp(name, "remote_filter_addr_lower") == 0)
return remote_filter_addr_lower;
if (strcmp(name, "remote_filter_port") == 0)
return remote_filter_port;
if (strcmp(name, "remote_filter_proto") == 0)
return remote_filter_proto;
if (strcmp(name, "local_filter_type") == 0)
return local_filter_type;
if (strcmp(name, "local_filter") == 0)
return (local_filter ? local_filter : "");
if (strcmp(name, "local_filter_addr_upper") == 0)
return local_filter_addr_upper;
if (strcmp(name, "local_filter_addr_lower") == 0)
return local_filter_addr_lower;
if (strcmp(name, "local_filter_port") == 0)
return local_filter_port;
if (strcmp(name, "local_filter_proto") == 0)
return local_filter_proto;
if (strcmp(name, "remote_ike_address") == 0)
return remote_ike_address;
if (strcmp(name, "remote_negotiation_address") == 0)
return remote_ike_address;
if (strcmp(name, "local_ike_address") == 0)
return local_ike_address;
if (strcmp(name, "local_negotiation_address") == 0)
return local_ike_address;
if (strcmp(name, "remote_id_type") == 0)
return remote_id_type;
if (strcmp(name, "remote_id") == 0)
return (remote_id ? remote_id : "");
if (strcmp(name, "remote_id_addr_upper") == 0)
return remote_id_addr_upper;
if (strcmp(name, "remote_id_addr_lower") == 0)
return remote_id_addr_lower;
if (strcmp(name, "remote_id_port") == 0)
return remote_id_port;
if (strcmp(name, "remote_id_proto") == 0)
return remote_id_proto;
if (strcmp(name, "phase1_group_desc") == 0)
return phase1_group;
if (strcmp(name, "esp_group_desc") == 0)
return esp_group_desc;
if (strcmp(name, "ah_group_desc") == 0)
return ah_group_desc;
if (strcmp(name, "comp_group_desc") == 0)
return comp_group_desc;
if (strcmp(name, "comp_ecn") == 0)
return comp_ecn;
if (strcmp(name, "ah_ecn") == 0)
return ah_ecn;
if (strcmp(name, "esp_ecn") == 0)
return esp_ecn;
return "";
bad:
policy_callback(KEYNOTE_CALLBACK_INITIALIZE);
return "";
}
void
policy_init(void)
{
char *ptr, *policy_file;
char **asserts;
size_t sz, len;
int fd, i;
LOG_DBG((LOG_POLICY, 30, "policy_init: initializing"));
/* Do we want to use the policy modules? */
if (ignore_policy ||
strncmp("yes", conf_get_str("General", "Use-Keynote"), 3))
return;
/* Get policy file from configuration. */
policy_file = conf_get_str("General", "Policy-file");
if (!policy_file)
policy_file = CONF_DFLT_POLICY_FILE;
/* Open policy file. */
fd = monitor_open(policy_file, O_RDONLY, 0);
if (fd == -1)
log_fatal("policy_init: open (\"%s\", O_RDONLY) failed",
policy_file);
/* Check file modes and collect file size */
if (check_file_secrecy_fd(fd, policy_file, &sz)) {
close(fd);
log_fatal("policy_init: cannot read %s", policy_file);
}
/* Allocate memory to keep policies. */
ptr = calloc(sz + 1, sizeof(char));
if (!ptr)
log_fatal("policy_init: calloc (%lu, %lu) failed",
(unsigned long)sz + 1, (unsigned long)sizeof(char));
/* Just in case there are short reads... */
for (len = 0; len < sz; len += i) {
i = read(fd, ptr + len, sz - len);
if (i == -1)
log_fatal("policy_init: read (%d, %p, %lu) failed", fd,
ptr + len, (unsigned long)(sz - len));
}
/* We're done with this. */
close(fd);
/* Parse buffer, break up into individual policies. */
asserts = kn_read_asserts(ptr, sz, &i);
/* Begone! */
free(ptr);
if (asserts == (char **)NULL)
log_print("policy_init: all policies flushed");
/* Cleanup */
if (policy_asserts) {
for (fd = 0; fd < policy_asserts_num; fd++)
if (policy_asserts)
free(policy_asserts[fd]);
free(policy_asserts);
}
policy_asserts = asserts;
policy_asserts_num = i;
}
/* Nothing needed for initialization */
int
keynote_cert_init(void)
{
return 1;
}
/* Just copy and return. */
void *
keynote_cert_get(u_int8_t *data, u_int32_t len)
{
char *foo = malloc(len + 1);
if (foo == NULL)
return NULL;
memcpy(foo, data, len);
foo[len] = '\0';
return foo;
}
/*
* We just verify the signature on the credentials.
* On signature failure, just drop the whole payload.
*/
int
keynote_cert_validate(void *scert)
{
char **foo;
int num, i;
if (scert == NULL)
return 0;
foo = kn_read_asserts((char *)scert, strlen((char *)scert), &num);
if (foo == NULL)
return 0;
for (i = 0; i < num; i++) {
if (kn_verify_assertion(scert, strlen((char *)scert))
!= SIGRESULT_TRUE) {
for (; i < num; i++)
free(foo[i]);
free(foo);
return 0;
}
free(foo[i]);
}
free(foo);
return 1;
}
/* Add received credentials. */
int
keynote_cert_insert(int sid, void *scert)
{
char **foo;
int num;
if (scert == NULL)
return 0;
foo = kn_read_asserts((char *)scert, strlen((char *)scert), &num);
if (foo == NULL)
return 0;
while (num--)
kn_add_assertion(sid, foo[num], strlen(foo[num]), 0);
return 1;
}
/* Just regular memory free. */
void
keynote_cert_free(void *cert)
{
free(cert);
}
/* Verify that the key given to us is valid. */
int
keynote_certreq_validate(u_int8_t *data, u_int32_t len)
{
struct keynote_deckey dc;
int err = 1;
char *dat;
dat = calloc(len + 1, sizeof(char));
if (!dat) {
log_error("keynote_certreq_validate: calloc (%d, %lu) failed",
len + 1, (unsigned long)sizeof(char));
return 0;
}
memcpy(dat, data, len);
if (kn_decode_key(&dc, dat, KEYNOTE_PUBLIC_KEY) != 0)
err = 0;
else
kn_free_key(&dc);
free(dat);
return err;
}
/* Beats me what we should be doing with this. */
int
keynote_certreq_decode(void **pdata, u_int8_t *data, u_int32_t len)
{
/* XXX */
return 0;
}
void
keynote_free_aca(void *blob)
{
/* XXX */
}
int
keynote_cert_obtain(u_int8_t *id, size_t id_len, void *data, u_int8_t **cert,
u_int32_t *certlen)
{
char *dirname, *file, *addr_str;
struct stat sb;
size_t size;
int idtype, fd, len;
if (!id) {
log_print("keynote_cert_obtain: ID is missing");
return 0;
}
/* Get type of ID. */
idtype = id[0];
id += ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ;
id_len -= ISAKMP_ID_DATA_OFF - ISAKMP_GEN_SZ;
dirname = conf_get_str("KeyNote", "Credential-directory");
if (!dirname) {
LOG_DBG((LOG_POLICY, 30,
"keynote_cert_obtain: no Credential-directory"));
return 0;
}
len = strlen(dirname) + strlen(CREDENTIAL_FILE) + 3;
switch (idtype) {
case IPSEC_ID_IPV4_ADDR:
case IPSEC_ID_IPV6_ADDR:
util_ntoa(&addr_str, idtype == IPSEC_ID_IPV4_ADDR ?
AF_INET : AF_INET6, id);
if (addr_str == 0)
return 0;
if (asprintf(&file, "%s/%s/%s", dirname,
addr_str, CREDENTIAL_FILE) == -1) {
log_error("keynote_cert_obtain: failed to allocate "
"%lu bytes", (unsigned long)len +
strlen(addr_str));
free(addr_str);
return 0;
}
free(addr_str);
break;
case IPSEC_ID_FQDN:
case IPSEC_ID_USER_FQDN:
file = calloc(len + id_len, sizeof(char));
if (file == NULL) {
log_error("keynote_cert_obtain: "
"failed to allocate %lu bytes",
(unsigned long)len + id_len);
return 0;
}
snprintf(file, len + id_len, "%s/", dirname);
memcpy(file + strlen(dirname) + 1, id, id_len);
snprintf(file + strlen(dirname) + 1 + id_len,
len - strlen(dirname) - 1, "/%s", CREDENTIAL_FILE);
break;
default:
return 0;
}
fd = monitor_open(file, O_RDONLY, 0);
if (fd < 0) {
LOG_DBG((LOG_POLICY, 30, "keynote_cert_obtain: "
"failed to open \"%s\"", file));
free(file);
return 0;
}
if (fstat(fd, &sb) == -1) {
LOG_DBG((LOG_POLICY, 30, "keynote_cert_obtain: "
"failed to stat \"%s\"", file));
free(file);
close(fd);
return 0;
}
size = (size_t)sb.st_size;
*cert = calloc(size + 1, sizeof(char));
if (*cert == NULL) {
log_error("keynote_cert_obtain: failed to allocate %lu bytes",
(unsigned long)size);
free(file);
close(fd);
return 0;
}
if (read(fd, *cert, size) != (int)size) {
LOG_DBG((LOG_POLICY, 30, "keynote_cert_obtain: "
"failed to read %lu bytes from \"%s\"",
(unsigned long)size, file));
free(cert);
cert = NULL;
free(file);
close(fd);
return 0;
}
close(fd);
free(file);
*certlen = size;
return 1;
}
/* This should never be called. */
int
keynote_cert_get_subjects(void *scert, int *n, u_int8_t ***id,
u_int32_t **id_len)
{
return 0;
}
/* Get the authorizer key. */
int
keynote_cert_get_key(void *scert, void *keyp)
{
struct keynote_keylist *kl;
int sid, kid, num;
char **foo;
foo = kn_read_asserts((char *)scert, strlen((char *)scert), &num);
if (foo == NULL || num == 0) {
log_print("keynote_cert_get_key: "
"failed to decompose credentials");
return 0;
}
kid = kn_init();
if (kid == -1) {
log_print("keynote_cert_get_key: "
"failed to initialize new policy session");
while (num--)
free(foo[num]);
free(foo);
return 0;
}
sid = kn_add_assertion(kid, foo[num - 1], strlen(foo[num - 1]), 0);
while (num--)
free(foo[num]);
free(foo);
if (sid == -1) {
log_print("keynote_cert_get_key: failed to add assertion");
kn_close(kid);
return 0;
}
*(RSA **)keyp = NULL;
kl = kn_get_licensees(kid, sid);
while (kl) {
if (kl->key_alg == KEYNOTE_ALGORITHM_RSA ||
kl->key_alg == KEYNOTE_ALGORITHM_X509) {
*(RSA **)keyp = RSAPublicKey_dup(kl->key_key);
break;
}
kl = kl->key_next;
}
kn_remove_assertion(kid, sid);
kn_close(kid);
return *(RSA **)keyp == NULL ? 0 : 1;
}
void *
keynote_cert_dup(void *cert)
{
return strdup((char *)cert);
}
void
keynote_serialize(void *cert, u_int8_t **data, u_int32_t *datalen)
{
*datalen = strlen((char *)cert) + 1;
*data = (u_int8_t *)strdup(cert); /* i.e an extra character at
* the end... */
if (*data == NULL)
log_error("keynote_serialize: malloc (%d) failed", *datalen);
}
/* From cert to printable */
char *
keynote_printable(void *cert)
{
return strdup((char *)cert);
}
/* From printable to cert */
void *
keynote_from_printable(char *cert)
{
return strdup(cert);
}
/* Number of CAs we trust (currently this is x509 only) */
int
keynote_ca_count(void)
{
return 0;
}
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