static void dhcp6opt_print(const u_char *cp, const u_char *ep) { struct dhcp6opt *dh6o; u_char *tp; size_t i; u_int16_t opttype; size_t optlen; u_int16_t val16; u_int32_t val32; struct dhcp6_ia ia; struct dhcp6_ia_prefix ia_prefix; struct dhcp6_ia_addr ia_addr; struct dhcp6_auth authopt; u_int authinfolen, authrealmlen; if (cp == ep) return; while (cp < ep) { if (ep < cp + sizeof(*dh6o)) goto trunc; dh6o = (struct dhcp6opt *)cp; optlen = EXTRACT_16BITS(&dh6o->dh6opt_len); if (ep < cp + sizeof(*dh6o) + optlen) goto trunc; opttype = EXTRACT_16BITS(&dh6o->dh6opt_type); printf(" (%s", dhcp6opt_name(opttype)); switch (opttype) { case DH6OPT_CLIENTID: case DH6OPT_SERVERID: if (optlen < 2) { /*(*/ printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); switch (EXTRACT_16BITS(tp)) { case 1: if (optlen >= 2 + 6) { printf(" hwaddr/time type %u time %u ", EXTRACT_16BITS(&tp[2]), EXTRACT_32BITS(&tp[4])); for (i = 8; i < optlen; i++) printf("%02x", tp[i]); /*(*/ printf(")"); } else { /*(*/ printf(" ?)"); } break; case 2: if (optlen >= 2 + 8) { printf(" vid "); for (i = 2; i < 2 + 8; i++) printf("%02x", tp[i]); /*(*/ printf(")"); } else { /*(*/ printf(" ?)"); } break; case 3: if (optlen >= 2 + 2) { printf(" hwaddr type %u ", EXTRACT_16BITS(&tp[2])); for (i = 4; i < optlen; i++) printf("%02x", tp[i]); /*(*/ printf(")"); } else { /*(*/ printf(" ?)"); } break; default: printf(" type %d)", EXTRACT_16BITS(tp)); break; } break; case DH6OPT_IA_ADDR: if (optlen < sizeof(ia_addr) - 4) { printf(" ?)"); break; } memcpy(&ia_addr, (u_char *)dh6o, sizeof(ia_addr)); printf(" %s", ip6addr_string(&ia_addr.dh6opt_ia_addr_addr)); ia_addr.dh6opt_ia_addr_pltime = ntohl(ia_addr.dh6opt_ia_addr_pltime); ia_addr.dh6opt_ia_addr_vltime = ntohl(ia_addr.dh6opt_ia_addr_vltime); printf(" pltime:%lu vltime:%lu", (unsigned long)ia_addr.dh6opt_ia_addr_pltime, (unsigned long)ia_addr.dh6opt_ia_addr_vltime); if (optlen > sizeof(ia_addr) - 4) { /* there are sub-options */ dhcp6opt_print((u_char *)dh6o + sizeof(ia_addr), (u_char *)(dh6o + 1) + optlen); } printf(")"); break; case DH6OPT_ORO: if (optlen % 2) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); for (i = 0; i < optlen; i += 2) { u_int16_t opt; memcpy(&opt, &tp[i], sizeof(opt)); printf(" %s", dhcp6opt_name(ntohs(opt))); } printf(")"); break; case DH6OPT_PREFERENCE: if (optlen != 1) { printf(" ?)"); break; } printf(" %d)", *((u_char *)(dh6o + 1) + 1)); break; case DH6OPT_ELAPSED_TIME: if (optlen != 2) { printf(" ?)"); break; } memcpy(&val16, dh6o + 1, sizeof(val16)); val16 = ntohs(val16); printf(" %d)", (int)val16); break; case DH6OPT_RELAY_MSG: printf(" ("); dhcp6_print((const u_char *)(dh6o + 1), optlen); printf(")"); break; case DH6OPT_AUTH: if (optlen < sizeof(authopt) - sizeof(*dh6o)) { printf(" ?)"); break; } memcpy(&authopt, dh6o, sizeof(authopt)); switch (authopt.dh6opt_auth_proto) { case DH6OPT_AUTHPROTO_DELAYED: printf(" proto: delayed"); break; case DH6OPT_AUTHPROTO_RECONFIG: printf(" proto: reconfigure"); break; default: printf(" proto: %d", authopt.dh6opt_auth_proto); break; } switch (authopt.dh6opt_auth_alg) { case DH6OPT_AUTHALG_HMACMD5: /* XXX: may depend on the protocol */ printf(", alg: HMAC-MD5"); break; default: printf(", alg: %d", authopt.dh6opt_auth_alg); break; } switch (authopt.dh6opt_auth_rdm) { case DH6OPT_AUTHRDM_MONOCOUNTER: printf(", RDM: mono"); break; default: printf(", RDM: %d", authopt.dh6opt_auth_rdm); break; } tp = (u_char *)&authopt.dh6opt_auth_rdinfo; printf(", RD:"); for (i = 0; i < 4; i++, tp += sizeof(val16)) printf(" %04x", EXTRACT_16BITS(tp)); /* protocol dependent part */ tp = (u_char *)dh6o + sizeof(authopt); authinfolen = optlen + sizeof(*dh6o) - sizeof(authopt); switch (authopt.dh6opt_auth_proto) { case DH6OPT_AUTHPROTO_DELAYED: if (authinfolen == 0) break; if (authinfolen < 20) { printf(" ??"); break; } authrealmlen = authinfolen - 20; if (authrealmlen > 0) { printf(", realm: "); } for (i = 0; i < authrealmlen; i++, tp++) printf("%02x", *tp); printf(", key ID: %08x", EXTRACT_32BITS(tp)); tp += 4; printf(", HMAC-MD5:"); for (i = 0; i < 4; i++, tp+= 4) printf(" %08x", EXTRACT_32BITS(tp)); break; case DH6OPT_AUTHPROTO_RECONFIG: if (authinfolen != 17) { printf(" ??"); break; } switch (*tp++) { case DH6OPT_AUTHRECONFIG_KEY: printf(" reconfig-key"); break; case DH6OPT_AUTHRECONFIG_HMACMD5: printf(" type: HMAC-MD5"); break; default: printf(" type: ??"); break; } printf(" value:"); for (i = 0; i < 4; i++, tp+= 4) printf(" %08x", EXTRACT_32BITS(tp)); break; default: printf(" ??"); break; } printf(")"); break; case DH6OPT_RAPID_COMMIT: /* nothing todo */ printf(")"); break; case DH6OPT_INTERFACE_ID: /* * Since we cannot predict the encoding, print hex dump * at most 10 characters. */ for (i = 0; i < optlen && i < 10; i++) printf("%02x", ((u_char *)(dh6o + 1))[i]); break; case DH6OPT_RECONF_MSG: tp = (u_char *)(dh6o + 1); switch (*tp) { case DH6_RENEW: printf(" for renew)"); break; case DH6_INFORM_REQ: printf(" for inf-req)"); break; default: printf(" for ?\?\?(%02x))", *tp); break; } break; case DH6OPT_RECONF_ACCEPT: /* nothing todo */ printf(")"); break; case DH6OPT_SIP_SERVER_A: case DH6OPT_DNS: case DH6OPT_NTP_SERVERS: case DH6OPT_NIS_SERVERS: case DH6OPT_NISP_SERVERS: case DH6OPT_BCMCS_SERVER_A: if (optlen % 16) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); for (i = 0; i < optlen; i += 16) printf(" %s", ip6addr_string(&tp[i])); printf(")"); break; case DH6OPT_STATUS_CODE: if (optlen < 2) { printf(" ?)"); break; } memcpy(&val16, (u_char *)(dh6o + 1), sizeof(val16)); val16 = ntohs(val16); printf(" %s)", dhcp6stcode(val16)); break; case DH6OPT_IA_NA: case DH6OPT_IA_PD: if (optlen < sizeof(ia) - 4) { printf(" ?)"); break; } memcpy(&ia, (u_char *)dh6o, sizeof(ia)); ia.dh6opt_ia_iaid = ntohl(ia.dh6opt_ia_iaid); ia.dh6opt_ia_t1 = ntohl(ia.dh6opt_ia_t1); ia.dh6opt_ia_t2 = ntohl(ia.dh6opt_ia_t2); printf(" IAID:%lu T1:%lu T2:%lu", (unsigned long)ia.dh6opt_ia_iaid, (unsigned long)ia.dh6opt_ia_t1, (unsigned long)ia.dh6opt_ia_t2); if (optlen > sizeof(ia) - 4) { /* there are sub-options */ dhcp6opt_print((u_char *)dh6o + sizeof(ia), (u_char *)(dh6o + 1) + optlen); } printf(")"); break; case DH6OPT_IA_PD_PREFIX: if (optlen < sizeof(ia_prefix) - 4) { printf(" ?)"); break; } memcpy(&ia_prefix, (u_char *)dh6o, sizeof(ia_prefix)); printf(" %s/%d", ip6addr_string(&ia_prefix.dh6opt_ia_prefix_addr), ia_prefix.dh6opt_ia_prefix_plen); ia_prefix.dh6opt_ia_prefix_pltime = ntohl(ia_prefix.dh6opt_ia_prefix_pltime); ia_prefix.dh6opt_ia_prefix_vltime = ntohl(ia_prefix.dh6opt_ia_prefix_vltime); printf(" pltime:%lu vltime:%lu", (unsigned long)ia_prefix.dh6opt_ia_prefix_pltime, (unsigned long)ia_prefix.dh6opt_ia_prefix_vltime); if (optlen > sizeof(ia_prefix) - 4) { /* there are sub-options */ dhcp6opt_print((u_char *)dh6o + sizeof(ia_prefix), (u_char *)(dh6o + 1) + optlen); } printf(")"); break; case DH6OPT_LIFETIME: if (optlen != 4) { printf(" ?)"); break; } memcpy(&val32, dh6o + 1, sizeof(val32)); val32 = ntohl(val32); printf(" %d)", (int)val32); break; default: printf(")"); break; } cp += sizeof(*dh6o) + optlen; } return; trunc: printf("[|dhcp6ext]"); }
static void dhcp6opt_print(const u_char *cp, const u_char *ep) { const struct dhcp6opt *dh6o; const u_char *tp; size_t i; u_int16_t opttype; size_t optlen; u_int8_t auth_proto; u_int authinfolen, authrealmlen; int remain_len; /* Length of remaining options */ int label_len; /* Label length */ u_int16_t subopt_code; u_int16_t subopt_len; if (cp == ep) return; while (cp < ep) { if (ep < cp + sizeof(*dh6o)) goto trunc; dh6o = (struct dhcp6opt *)cp; TCHECK(*dh6o); optlen = EXTRACT_16BITS(&dh6o->dh6opt_len); if (ep < cp + sizeof(*dh6o) + optlen) goto trunc; opttype = EXTRACT_16BITS(&dh6o->dh6opt_type); printf(" (%s", dhcp6opt_name(opttype)); switch (opttype) { case DH6OPT_CLIENTID: case DH6OPT_SERVERID: if (optlen < 2) { /*(*/ printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); switch (EXTRACT_16BITS(tp)) { case 1: if (optlen >= 2 + 6) { printf(" hwaddr/time type %u time %u ", EXTRACT_16BITS(&tp[2]), EXTRACT_32BITS(&tp[4])); for (i = 8; i < optlen; i++) printf("%02x", tp[i]); /*(*/ printf(")"); } else { /*(*/ printf(" ?)"); } break; case 2: if (optlen >= 2 + 8) { printf(" vid "); for (i = 2; i < 2 + 8; i++) printf("%02x", tp[i]); /*(*/ printf(")"); } else { /*(*/ printf(" ?)"); } break; case 3: if (optlen >= 2 + 2) { printf(" hwaddr type %u ", EXTRACT_16BITS(&tp[2])); for (i = 4; i < optlen; i++) printf("%02x", tp[i]); /*(*/ printf(")"); } else { /*(*/ printf(" ?)"); } break; default: printf(" type %d)", EXTRACT_16BITS(tp)); break; } break; case DH6OPT_IA_ADDR: if (optlen < 24) { /*(*/ printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" %s", ip6addr_string(&tp[0])); printf(" pltime:%u vltime:%u", EXTRACT_32BITS(&tp[16]), EXTRACT_32BITS(&tp[20])); if (optlen > 24) { /* there are sub-options */ dhcp6opt_print(tp + 24, tp + optlen); } printf(")"); break; case DH6OPT_ORO: case DH6OPT_ERO: if (optlen % 2) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); for (i = 0; i < optlen; i += 2) { printf(" %s", dhcp6opt_name(EXTRACT_16BITS(&tp[i]))); } printf(")"); break; case DH6OPT_PREFERENCE: if (optlen != 1) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" %d)", *tp); break; case DH6OPT_ELAPSED_TIME: if (optlen != 2) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" %d)", EXTRACT_16BITS(tp)); break; case DH6OPT_RELAY_MSG: printf(" ("); tp = (u_char *)(dh6o + 1); dhcp6_print(tp, optlen); printf(")"); break; case DH6OPT_AUTH: if (optlen < 11) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); auth_proto = *tp; switch (auth_proto) { case DH6OPT_AUTHPROTO_DELAYED: printf(" proto: delayed"); break; case DH6OPT_AUTHPROTO_RECONFIG: printf(" proto: reconfigure"); break; default: printf(" proto: %d", auth_proto); break; } tp++; switch (*tp) { case DH6OPT_AUTHALG_HMACMD5: /* XXX: may depend on the protocol */ printf(", alg: HMAC-MD5"); break; default: printf(", alg: %d", *tp); break; } tp++; switch (*tp) { case DH6OPT_AUTHRDM_MONOCOUNTER: printf(", RDM: mono"); break; default: printf(", RDM: %d", *tp); break; } tp++; printf(", RD:"); for (i = 0; i < 4; i++, tp += 2) printf(" %04x", EXTRACT_16BITS(tp)); /* protocol dependent part */ authinfolen = optlen - 11; switch (auth_proto) { case DH6OPT_AUTHPROTO_DELAYED: if (authinfolen == 0) break; if (authinfolen < 20) { printf(" ??"); break; } authrealmlen = authinfolen - 20; if (authrealmlen > 0) { printf(", realm: "); } for (i = 0; i < authrealmlen; i++, tp++) printf("%02x", *tp); printf(", key ID: %08x", EXTRACT_32BITS(tp)); tp += 4; printf(", HMAC-MD5:"); for (i = 0; i < 4; i++, tp+= 4) printf(" %08x", EXTRACT_32BITS(tp)); break; case DH6OPT_AUTHPROTO_RECONFIG: if (authinfolen != 17) { printf(" ??"); break; } switch (*tp++) { case DH6OPT_AUTHRECONFIG_KEY: printf(" reconfig-key"); break; case DH6OPT_AUTHRECONFIG_HMACMD5: printf(" type: HMAC-MD5"); break; default: printf(" type: ??"); break; } printf(" value:"); for (i = 0; i < 4; i++, tp+= 4) printf(" %08x", EXTRACT_32BITS(tp)); break; default: printf(" ??"); break; } printf(")"); break; case DH6OPT_RAPID_COMMIT: /* nothing todo */ printf(")"); break; case DH6OPT_INTERFACE_ID: case DH6OPT_SUBSCRIBER_ID: /* * Since we cannot predict the encoding, print hex dump * at most 10 characters. */ tp = (u_char *)(dh6o + 1); printf(" "); for (i = 0; i < optlen && i < 10; i++) printf("%02x", tp[i]); printf("...)"); break; case DH6OPT_RECONF_MSG: tp = (u_char *)(dh6o + 1); switch (*tp) { case DH6_RENEW: printf(" for renew)"); break; case DH6_INFORM_REQ: printf(" for inf-req)"); break; default: printf(" for ?\?\?(%02x))", *tp); break; } break; case DH6OPT_RECONF_ACCEPT: /* nothing todo */ printf(")"); break; case DH6OPT_SIP_SERVER_A: case DH6OPT_DNS_SERVERS: case DH6OPT_SNTP_SERVERS: case DH6OPT_NIS_SERVERS: case DH6OPT_NISP_SERVERS: case DH6OPT_BCMCS_SERVER_A: case DH6OPT_PANA_AGENT: case DH6OPT_LQ_CLIENT_LINK: if (optlen % 16) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); for (i = 0; i < optlen; i += 16) printf(" %s", ip6addr_string(&tp[i])); printf(")"); break; case DH6OPT_SIP_SERVER_D: case DH6OPT_DOMAIN_LIST: tp = (u_char *)(dh6o + 1); while (tp < cp + sizeof(*dh6o) + optlen) { putchar(' '); if ((tp = ns_nprint(tp, cp + sizeof(*dh6o) + optlen)) == NULL) goto trunc; } printf(")"); break; case DH6OPT_STATUS_CODE: if (optlen < 2) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" %s)", dhcp6stcode(EXTRACT_16BITS(&tp[0]))); break; case DH6OPT_IA_NA: case DH6OPT_IA_PD: if (optlen < 12) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" IAID:%u T1:%u T2:%u", EXTRACT_32BITS(&tp[0]), EXTRACT_32BITS(&tp[4]), EXTRACT_32BITS(&tp[8])); if (optlen > 12) { /* there are sub-options */ dhcp6opt_print(tp + 12, tp + optlen); } printf(")"); break; case DH6OPT_IA_TA: if (optlen < 4) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" IAID:%u", EXTRACT_32BITS(tp)); if (optlen > 4) { /* there are sub-options */ dhcp6opt_print(tp + 4, tp + optlen); } printf(")"); break; case DH6OPT_IA_PD_PREFIX: if (optlen < 25) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" %s/%d", ip6addr_string(&tp[9]), tp[8]); printf(" pltime:%u vltime:%u", EXTRACT_32BITS(&tp[0]), EXTRACT_32BITS(&tp[4])); if (optlen > 25) { /* there are sub-options */ dhcp6opt_print(tp + 25, tp + optlen); } printf(")"); break; case DH6OPT_LIFETIME: case DH6OPT_CLT_TIME: if (optlen != 4) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" %d)", EXTRACT_32BITS(tp)); break; case DH6OPT_REMOTE_ID: if (optlen < 4) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" %d ", EXTRACT_32BITS(tp)); /* * Print hex dump first 10 characters. */ for (i = 4; i < optlen && i < 14; i++) printf("%02x", tp[i]); printf("...)"); break; case DH6OPT_LQ_QUERY: if (optlen < 17) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); switch (*tp) { case 1: printf(" by-address"); break; case 2: printf(" by-clientID"); break; default: printf(" type_%d", (int)*tp); break; } printf(" %s", ip6addr_string(&tp[1])); if (optlen > 17) { /* there are query-options */ dhcp6opt_print(tp + 17, tp + optlen); } printf(")"); break; case DH6OPT_CLIENT_DATA: tp = (u_char *)(dh6o + 1); if (optlen > 0) { /* there are encapsulated options */ dhcp6opt_print(tp, tp + optlen); } printf(")"); break; case DH6OPT_LQ_RELAY_DATA: if (optlen < 16) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); printf(" %s ", ip6addr_string(&tp[0])); /* * Print hex dump first 10 characters. */ for (i = 16; i < optlen && i < 26; i++) printf("%02x", tp[i]); printf("...)"); break; case DH6OPT_NTP_SERVER: if (optlen < 4) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); while (tp < cp + sizeof(*dh6o) + optlen - 4) { subopt_code = EXTRACT_16BITS(tp); tp += 2; subopt_len = EXTRACT_16BITS(tp); tp += 2; if (tp + subopt_len > cp + sizeof(*dh6o) + optlen) goto trunc; printf(" subopt:%d", subopt_code); switch (subopt_code) { case DH6OPT_NTP_SUBOPTION_SRV_ADDR: case DH6OPT_NTP_SUBOPTION_MC_ADDR: if (subopt_len != 16) { printf(" ?"); break; } printf(" %s", ip6addr_string(&tp[0])); break; case DH6OPT_NTP_SUBOPTION_SRV_FQDN: putchar(' '); if (ns_nprint(tp, tp + subopt_len) == NULL) goto trunc; break; default: printf(" ?"); break; } tp += subopt_len; } printf(")"); break; case DH6OPT_AFTR_NAME: if (optlen < 3) { printf(" ?)"); break; } tp = (u_char *)(dh6o + 1); remain_len = optlen; printf(" "); /* Encoding is described in section 3.1 of RFC 1035 */ while (remain_len && *tp) { label_len = *tp++; if (label_len < remain_len - 1) { printf("%.*s", label_len, tp); tp += label_len; remain_len -= (label_len + 1); if(*tp) printf("."); } else { printf(" ?"); break; } } printf(")"); break; default: printf(")"); break; } cp += sizeof(*dh6o) + optlen; } return; trunc: printf("[|dhcp6ext]"); }