/* $OpenBSD: policy.c,v 1.78 2004/08/08 19:11:06 deraadt 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "sysdep.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; if (normalize) src2 = ntohl(*src); else src2 = *src; if (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]) > (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"]; if (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]) > (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 = ""; if (remote_filter != 0) { free(remote_filter); remote_filter = 0; } if (local_filter != 0) { free(local_filter); local_filter = 0; } if (remote_id != 0) { free(remote_id); remote_id = 0; } memset(remote_ike_address, 0, sizeof remote_ike_address); memset(local_ike_address, 0, sizeof local_ike_address); memset(ah_life_kbytes, 0, sizeof ah_life_kbytes); memset(ah_life_seconds, 0, sizeof ah_life_seconds); memset(esp_life_kbytes, 0, sizeof esp_life_kbytes); memset(esp_life_seconds, 0, sizeof esp_life_seconds); memset(comp_life_kbytes, 0, sizeof comp_life_kbytes); memset(comp_life_seconds, 0, sizeof comp_life_seconds); memset(ah_key_length, 0, sizeof ah_key_length); memset(ah_key_rounds, 0, sizeof ah_key_rounds); memset(esp_key_length, 0, sizeof esp_key_length); memset(esp_key_rounds, 0, sizeof esp_key_rounds); memset(comp_dict_size, 0, sizeof comp_dict_size); memset(comp_private_alg, 0, sizeof comp_private_alg); memset(remote_filter_addr_upper, 0, sizeof remote_filter_addr_upper); memset(remote_filter_addr_lower, 0, sizeof remote_filter_addr_lower); memset(local_filter_addr_upper, 0, sizeof local_filter_addr_upper); memset(local_filter_addr_lower, 0, sizeof local_filter_addr_lower); memset(remote_id_addr_upper, 0, sizeof remote_id_addr_upper); memset(remote_id_addr_lower, 0, sizeof remote_id_addr_lower); memset(ah_group_desc, 0, sizeof ah_group_desc); memset(esp_group_desc, 0, sizeof esp_group_desc); memset(remote_id_port, 0, sizeof remote_id_port); memset(remote_filter_port, 0, sizeof remote_filter_port); memset(local_filter_port, 0, sizeof local_filter_port); memset(phase1_group, 0, 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_128_CTR: 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; case IPSEC_IPCOMP_LZS: comp_alg = "lzs"; break; case IPSEC_IPCOMP_V42BIS: comp_alg = "v42bis"; 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; } #if defined (USE_NAT_TRAVERSAL) 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 */ #endif 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(*(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; #ifdef IPPROTO_ETHERIP case IPPROTO_ETHERIP: remote_id_proto = "etherip"; break; #endif 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(*(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; #ifdef IPPROTO_ETHERIP case IPPROTO_ETHERIP: remote_filter_proto = "etherip"; break; #endif 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(*(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; #ifdef IPPROTO_ETHERIP case IPPROTO_ETHERIP: local_filter_proto = "etherip"; break; #endif 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) { tt = time((time_t)NULL); strftime(mytimeofday, 14, "%Y%m%d%H%M%S", gmtime(&tt)); return mytimeofday; } if (strcmp(name, "LocalTimeOfDay") == 0) { tt = time((time_t)NULL); strftime(mytimeofday, 14, "%Y%m%d%H%M%S", localtime(&tt)); 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, *use_keynote; 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? */ use_keynote = conf_get_str("General", "Use-Keynote"); if (ignore_policy || (use_keynote && strncmp("yes", 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 && policy_asserts[fd]) 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. */ void * keynote_certreq_decode(u_int8_t *data, u_int32_t len) { /* XXX */ return NULL; } 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; file = calloc(len + strlen(addr_str), sizeof(char)); if (file == NULL) { log_error("keynote_cert_obtain: failed to allocate " "%lu bytes", (unsigned long)len + strlen(addr_str)); free(addr_str); return 0; } snprintf(file, len + strlen(addr_str), "%s/%s/%s", dirname, addr_str, CREDENTIAL_FILE); 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) < 0) { 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); 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(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); }