| /* |
| * Copyright (c) 2016 Antonin Décimo, Jean-Raphaël Gaglione |
| * |
| * 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. |
| * 3. Neither the name of the project nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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. |
| */ |
| |
| /* \summary: Home Networking Control Protocol (HNCP) printer */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <netdissect-stdinc.h> |
| |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "netdissect.h" |
| #include "addrtoname.h" |
| #include "extract.h" |
| |
| static void |
| hncp_print_rec(netdissect_options *ndo, |
| const u_char *cp, u_int length, int indent); |
| |
| void |
| hncp_print(netdissect_options *ndo, |
| const u_char *cp, u_int length) |
| { |
| ND_PRINT((ndo, "hncp (%d)", length)); |
| hncp_print_rec(ndo, cp, length, 1); |
| } |
| |
| /* RFC7787 */ |
| #define DNCP_REQUEST_NETWORK_STATE 1 |
| #define DNCP_REQUEST_NODE_STATE 2 |
| #define DNCP_NODE_ENDPOINT 3 |
| #define DNCP_NETWORK_STATE 4 |
| #define DNCP_NODE_STATE 5 |
| #define DNCP_PEER 8 |
| #define DNCP_KEEP_ALIVE_INTERVAL 9 |
| #define DNCP_TRUST_VERDICT 10 |
| |
| /* RFC7788 */ |
| #define HNCP_HNCP_VERSION 32 |
| #define HNCP_EXTERNAL_CONNECTION 33 |
| #define HNCP_DELEGATED_PREFIX 34 |
| #define HNCP_PREFIX_POLICY 43 |
| #define HNCP_DHCPV4_DATA 37 |
| #define HNCP_DHCPV6_DATA 38 |
| #define HNCP_ASSIGNED_PREFIX 35 |
| #define HNCP_NODE_ADDRESS 36 |
| #define HNCP_DNS_DELEGATED_ZONE 39 |
| #define HNCP_DOMAIN_NAME 40 |
| #define HNCP_NODE_NAME 41 |
| #define HNCP_MANAGED_PSK 42 |
| |
| /* See type_mask in hncp_print_rec below */ |
| #define RANGE_DNCP_RESERVED 0x10000 |
| #define RANGE_HNCP_UNASSIGNED 0x10001 |
| #define RANGE_DNCP_PRIVATE_USE 0x10002 |
| #define RANGE_DNCP_FUTURE_USE 0x10003 |
| |
| static const struct tok type_values[] = { |
| { DNCP_REQUEST_NETWORK_STATE, "Request network state" }, |
| { DNCP_REQUEST_NODE_STATE, "Request node state" }, |
| { DNCP_NODE_ENDPOINT, "Node endpoint" }, |
| { DNCP_NETWORK_STATE, "Network state" }, |
| { DNCP_NODE_STATE, "Node state" }, |
| { DNCP_PEER, "Peer" }, |
| { DNCP_KEEP_ALIVE_INTERVAL, "Keep-alive interval" }, |
| { DNCP_TRUST_VERDICT, "Trust-Verdict" }, |
| |
| { HNCP_HNCP_VERSION, "HNCP-Version" }, |
| { HNCP_EXTERNAL_CONNECTION, "External-Connection" }, |
| { HNCP_DELEGATED_PREFIX, "Delegated-Prefix" }, |
| { HNCP_PREFIX_POLICY, "Prefix-Policy" }, |
| { HNCP_DHCPV4_DATA, "DHCPv4-Data" }, |
| { HNCP_DHCPV6_DATA, "DHCPv6-Data" }, |
| { HNCP_ASSIGNED_PREFIX, "Assigned-Prefix" }, |
| { HNCP_NODE_ADDRESS, "Node-Address" }, |
| { HNCP_DNS_DELEGATED_ZONE, "DNS-Delegated-Zone" }, |
| { HNCP_DOMAIN_NAME, "Domain-Name" }, |
| { HNCP_NODE_NAME, "Node-Name" }, |
| { HNCP_MANAGED_PSK, "Managed-PSK" }, |
| |
| { RANGE_DNCP_RESERVED, "Reserved" }, |
| { RANGE_HNCP_UNASSIGNED, "Unassigned" }, |
| { RANGE_DNCP_PRIVATE_USE, "Private use" }, |
| { RANGE_DNCP_FUTURE_USE, "Future use" }, |
| |
| { 0, NULL} |
| }; |
| |
| #define DH4OPT_DNS_SERVERS 6 /* RFC2132 */ |
| #define DH4OPT_NTP_SERVERS 42 /* RFC2132 */ |
| #define DH4OPT_DOMAIN_SEARCH 119 /* RFC3397 */ |
| |
| static const struct tok dh4opt_str[] = { |
| { DH4OPT_DNS_SERVERS, "DNS-server" }, |
| { DH4OPT_NTP_SERVERS, "NTP-server"}, |
| { DH4OPT_DOMAIN_SEARCH, "DNS-search" }, |
| { 0, NULL } |
| }; |
| |
| #define DH6OPT_DNS_SERVERS 23 /* RFC3646 */ |
| #define DH6OPT_DOMAIN_LIST 24 /* RFC3646 */ |
| #define DH6OPT_SNTP_SERVERS 31 /* RFC4075 */ |
| |
| static const struct tok dh6opt_str[] = { |
| { DH6OPT_DNS_SERVERS, "DNS-server" }, |
| { DH6OPT_DOMAIN_LIST, "DNS-search-list" }, |
| { DH6OPT_SNTP_SERVERS, "SNTP-servers" }, |
| { 0, NULL } |
| }; |
| |
| /* |
| * For IPv4-mapped IPv6 addresses, length of the prefix that precedes |
| * the 4 bytes of IPv4 address at the end of the IPv6 address. |
| */ |
| #define IPV4_MAPPED_HEADING_LEN 12 |
| |
| /* |
| * Is an IPv6 address an IPv4-mapped address? |
| */ |
| static inline int |
| is_ipv4_mapped_address(const u_char *addr) |
| { |
| /* The value of the prefix */ |
| static const u_char ipv4_mapped_heading[IPV4_MAPPED_HEADING_LEN] = |
| { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF }; |
| |
| return memcmp(addr, ipv4_mapped_heading, IPV4_MAPPED_HEADING_LEN) == 0; |
| } |
| |
| static const char * |
| format_nid(const u_char *data) |
| { |
| static char buf[4][11+5]; |
| static int i = 0; |
| i = (i + 1) % 4; |
| snprintf(buf[i], 16, "%02x:%02x:%02x:%02x", |
| data[0], data[1], data[2], data[3]); |
| return buf[i]; |
| } |
| |
| static const char * |
| format_256(const u_char *data) |
| { |
| static char buf[4][64+5]; |
| static int i = 0; |
| i = (i + 1) % 4; |
| snprintf(buf[i], 28, "%016" PRIx64 "%016" PRIx64 "%016" PRIx64 "%016" PRIx64, |
| EXTRACT_64BITS(data), |
| EXTRACT_64BITS(data + 8), |
| EXTRACT_64BITS(data + 16), |
| EXTRACT_64BITS(data + 24) |
| ); |
| return buf[i]; |
| } |
| |
| static const char * |
| format_interval(const uint32_t n) |
| { |
| static char buf[4][sizeof("0000000.000s")]; |
| static int i = 0; |
| i = (i + 1) % 4; |
| snprintf(buf[i], sizeof(buf[i]), "%u.%03us", n / 1000, n % 1000); |
| return buf[i]; |
| } |
| |
| static const char * |
| format_ip6addr(netdissect_options *ndo, const u_char *cp) |
| { |
| if (is_ipv4_mapped_address(cp)) |
| return ipaddr_string(ndo, cp + IPV4_MAPPED_HEADING_LEN); |
| else |
| return ip6addr_string(ndo, cp); |
| } |
| |
| static int |
| print_prefix(netdissect_options *ndo, const u_char *prefix, u_int max_length) |
| { |
| int plenbytes; |
| char buf[sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx::/128")]; |
| |
| if (prefix[0] >= 96 && max_length >= IPV4_MAPPED_HEADING_LEN + 1 && |
| is_ipv4_mapped_address(&prefix[1])) { |
| struct in_addr addr; |
| u_int plen; |
| |
| plen = prefix[0]-96; |
| if (32 < plen) |
| return -1; |
| max_length -= 1; |
| |
| memset(&addr, 0, sizeof(addr)); |
| plenbytes = (plen + 7) / 8; |
| if (max_length < (u_int)plenbytes + IPV4_MAPPED_HEADING_LEN) |
| return -3; |
| memcpy(&addr, &prefix[1 + IPV4_MAPPED_HEADING_LEN], plenbytes); |
| if (plen % 8) { |
| ((u_char *)&addr)[plenbytes - 1] &= |
| ((0xff00 >> (plen % 8)) & 0xff); |
| } |
| snprintf(buf, sizeof(buf), "%s/%d", ipaddr_string(ndo, &addr), plen); |
| plenbytes += 1 + IPV4_MAPPED_HEADING_LEN; |
| } else { |
| plenbytes = decode_prefix6(ndo, prefix, max_length, buf, sizeof(buf)); |
| } |
| |
| ND_PRINT((ndo, "%s", buf)); |
| return plenbytes; |
| } |
| |
| static int |
| print_dns_label(netdissect_options *ndo, |
| const u_char *cp, u_int max_length, int print) |
| { |
| u_int length = 0; |
| while (length < max_length) { |
| u_int lab_length = cp[length++]; |
| if (lab_length == 0) |
| return (int)length; |
| if (length > 1 && print) |
| safeputchar(ndo, '.'); |
| if (length+lab_length > max_length) { |
| if (print) |
| safeputs(ndo, cp+length, max_length-length); |
| break; |
| } |
| if (print) |
| safeputs(ndo, cp+length, lab_length); |
| length += lab_length; |
| } |
| if (print) |
| ND_PRINT((ndo, "[|DNS]")); |
| return -1; |
| } |
| |
| static int |
| dhcpv4_print(netdissect_options *ndo, |
| const u_char *cp, u_int length, int indent) |
| { |
| u_int i, t; |
| const u_char *tlv, *value; |
| uint8_t type, optlen; |
| |
| i = 0; |
| while (i < length) { |
| if (i + 2 > length) |
| return -1; |
| tlv = cp + i; |
| type = (uint8_t)tlv[0]; |
| optlen = (uint8_t)tlv[1]; |
| value = tlv + 2; |
| |
| ND_PRINT((ndo, "\n")); |
| for (t = indent; t > 0; t--) |
| ND_PRINT((ndo, "\t")); |
| |
| ND_PRINT((ndo, "%s", tok2str(dh4opt_str, "Unknown", type))); |
| ND_PRINT((ndo," (%u)", optlen + 2 )); |
| if (i + 2 + optlen > length) |
| return -1; |
| |
| switch (type) { |
| case DH4OPT_DNS_SERVERS: |
| case DH4OPT_NTP_SERVERS: { |
| if (optlen < 4 || optlen % 4 != 0) { |
| return -1; |
| } |
| for (t = 0; t < optlen; t += 4) |
| ND_PRINT((ndo, " %s", ipaddr_string(ndo, value + t))); |
| } |
| break; |
| case DH4OPT_DOMAIN_SEARCH: { |
| const u_char *tp = value; |
| while (tp < value + optlen) { |
| ND_PRINT((ndo, " ")); |
| if ((tp = ns_nprint(ndo, tp, value + optlen)) == NULL) |
| return -1; |
| } |
| } |
| break; |
| } |
| |
| i += 2 + optlen; |
| } |
| return 0; |
| } |
| |
| static int |
| dhcpv6_print(netdissect_options *ndo, |
| const u_char *cp, u_int length, int indent) |
| { |
| u_int i, t; |
| const u_char *tlv, *value; |
| uint16_t type, optlen; |
| |
| i = 0; |
| while (i < length) { |
| if (i + 4 > length) |
| return -1; |
| tlv = cp + i; |
| type = EXTRACT_16BITS(tlv); |
| optlen = EXTRACT_16BITS(tlv + 2); |
| value = tlv + 4; |
| |
| ND_PRINT((ndo, "\n")); |
| for (t = indent; t > 0; t--) |
| ND_PRINT((ndo, "\t")); |
| |
| ND_PRINT((ndo, "%s", tok2str(dh6opt_str, "Unknown", type))); |
| ND_PRINT((ndo," (%u)", optlen + 4 )); |
| if (i + 4 + optlen > length) |
| return -1; |
| |
| switch (type) { |
| case DH6OPT_DNS_SERVERS: |
| case DH6OPT_SNTP_SERVERS: { |
| if (optlen % 16 != 0) { |
| ND_PRINT((ndo, " %s", istr)); |
| return -1; |
| } |
| for (t = 0; t < optlen; t += 16) |
| ND_PRINT((ndo, " %s", ip6addr_string(ndo, value + t))); |
| } |
| break; |
| case DH6OPT_DOMAIN_LIST: { |
| const u_char *tp = value; |
| while (tp < value + optlen) { |
| ND_PRINT((ndo, " ")); |
| if ((tp = ns_nprint(ndo, tp, value + optlen)) == NULL) |
| return -1; |
| } |
| } |
| break; |
| } |
| |
| i += 4 + optlen; |
| } |
| return 0; |
| } |
| |
| /* Determine in-line mode */ |
| static int |
| is_in_line(netdissect_options *ndo, int indent) |
| { |
| return indent - 1 >= ndo->ndo_vflag && ndo->ndo_vflag < 3; |
| } |
| |
| static void |
| print_type_in_line(netdissect_options *ndo, |
| uint32_t type, int count, int indent, int *first_one) |
| { |
| if (count > 0) { |
| if (*first_one) { |
| *first_one = 0; |
| if (indent > 1) { |
| u_int t; |
| ND_PRINT((ndo, "\n")); |
| for (t = indent; t > 0; t--) |
| ND_PRINT((ndo, "\t")); |
| } else { |
| ND_PRINT((ndo, " ")); |
| } |
| } else { |
| ND_PRINT((ndo, ", ")); |
| } |
| ND_PRINT((ndo, "%s", tok2str(type_values, "Easter Egg", type))); |
| if (count > 1) |
| ND_PRINT((ndo, " (x%d)", count)); |
| } |
| } |
| |
| void |
| hncp_print_rec(netdissect_options *ndo, |
| const u_char *cp, u_int length, int indent) |
| { |
| const int in_line = is_in_line(ndo, indent); |
| int first_one = 1; |
| |
| u_int i, t; |
| |
| uint32_t last_type_mask = 0xffffffffU; |
| int last_type_count = -1; |
| |
| const u_char *tlv, *value; |
| uint16_t type, bodylen; |
| uint32_t type_mask; |
| |
| i = 0; |
| while (i < length) { |
| tlv = cp + i; |
| |
| if (!in_line) { |
| ND_PRINT((ndo, "\n")); |
| for (t = indent; t > 0; t--) |
| ND_PRINT((ndo, "\t")); |
| } |
| |
| ND_TCHECK2(*tlv, 4); |
| if (i + 4 > length) |
| goto invalid; |
| |
| type = EXTRACT_16BITS(tlv); |
| bodylen = EXTRACT_16BITS(tlv + 2); |
| value = tlv + 4; |
| ND_TCHECK2(*value, bodylen); |
| if (i + bodylen + 4 > length) |
| goto invalid; |
| |
| type_mask = |
| (type == 0) ? RANGE_DNCP_RESERVED: |
| (44 <= type && type <= 511) ? RANGE_HNCP_UNASSIGNED: |
| (768 <= type && type <= 1023) ? RANGE_DNCP_PRIVATE_USE: |
| RANGE_DNCP_FUTURE_USE; |
| if (type == 6 || type == 7) |
| type_mask = RANGE_DNCP_FUTURE_USE; |
| |
| /* defined types */ |
| { |
| t = 0; |
| while (1) { |
| u_int key = type_values[t++].v; |
| if (key > 0xffff) |
| break; |
| if (key == type) { |
| type_mask = type; |
| break; |
| } |
| } |
| } |
| |
| if (in_line) { |
| if (last_type_mask == type_mask) { |
| last_type_count++; |
| } else { |
| print_type_in_line(ndo, last_type_mask, last_type_count, indent, &first_one); |
| last_type_mask = type_mask; |
| last_type_count = 1; |
| } |
| |
| goto skip_multiline; |
| } |
| |
| ND_PRINT((ndo,"%s", tok2str(type_values, "Easter Egg (42)", type_mask) )); |
| if (type_mask > 0xffff) |
| ND_PRINT((ndo,": type=%u", type )); |
| ND_PRINT((ndo," (%u)", bodylen + 4 )); |
| |
| switch (type_mask) { |
| |
| case DNCP_REQUEST_NETWORK_STATE: { |
| if (bodylen != 0) |
| ND_PRINT((ndo, " %s", istr)); |
| } |
| break; |
| |
| case DNCP_REQUEST_NODE_STATE: { |
| const char *node_identifier; |
| if (bodylen != 4) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| node_identifier = format_nid(value); |
| ND_PRINT((ndo, " NID: %s", node_identifier)); |
| } |
| break; |
| |
| case DNCP_NODE_ENDPOINT: { |
| const char *node_identifier; |
| uint32_t endpoint_identifier; |
| if (bodylen != 8) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| node_identifier = format_nid(value); |
| endpoint_identifier = EXTRACT_32BITS(value + 4); |
| ND_PRINT((ndo, " NID: %s EPID: %08x", |
| node_identifier, |
| endpoint_identifier |
| )); |
| } |
| break; |
| |
| case DNCP_NETWORK_STATE: { |
| uint64_t hash; |
| if (bodylen != 8) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| hash = EXTRACT_64BITS(value); |
| ND_PRINT((ndo, " hash: %016" PRIx64, hash)); |
| } |
| break; |
| |
| case DNCP_NODE_STATE: { |
| const char *node_identifier, *interval; |
| uint32_t sequence_number; |
| uint64_t hash; |
| if (bodylen < 20) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| node_identifier = format_nid(value); |
| sequence_number = EXTRACT_32BITS(value + 4); |
| interval = format_interval(EXTRACT_32BITS(value + 8)); |
| hash = EXTRACT_64BITS(value + 12); |
| ND_PRINT((ndo, " NID: %s seqno: %u %s hash: %016" PRIx64, |
| node_identifier, |
| sequence_number, |
| interval, |
| hash |
| )); |
| hncp_print_rec(ndo, value+20, bodylen-20, indent+1); |
| } |
| break; |
| |
| case DNCP_PEER: { |
| const char *peer_node_identifier; |
| uint32_t peer_endpoint_identifier, endpoint_identifier; |
| if (bodylen != 12) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| peer_node_identifier = format_nid(value); |
| peer_endpoint_identifier = EXTRACT_32BITS(value + 4); |
| endpoint_identifier = EXTRACT_32BITS(value + 8); |
| ND_PRINT((ndo, " Peer-NID: %s Peer-EPID: %08x Local-EPID: %08x", |
| peer_node_identifier, |
| peer_endpoint_identifier, |
| endpoint_identifier |
| )); |
| } |
| break; |
| |
| case DNCP_KEEP_ALIVE_INTERVAL: { |
| uint32_t endpoint_identifier; |
| const char *interval; |
| if (bodylen < 8) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| endpoint_identifier = EXTRACT_32BITS(value); |
| interval = format_interval(EXTRACT_32BITS(value + 4)); |
| ND_PRINT((ndo, " EPID: %08x Interval: %s", |
| endpoint_identifier, |
| interval |
| )); |
| } |
| break; |
| |
| case DNCP_TRUST_VERDICT: { |
| if (bodylen <= 36) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| ND_PRINT((ndo, " Verdict: %u Fingerprint: %s Common Name: ", |
| *value, |
| format_256(value + 4))); |
| safeputs(ndo, value + 36, bodylen - 36); |
| } |
| break; |
| |
| case HNCP_HNCP_VERSION: { |
| uint16_t capabilities; |
| uint8_t M, P, H, L; |
| if (bodylen < 5) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| capabilities = EXTRACT_16BITS(value + 2); |
| M = (uint8_t)((capabilities >> 12) & 0xf); |
| P = (uint8_t)((capabilities >> 8) & 0xf); |
| H = (uint8_t)((capabilities >> 4) & 0xf); |
| L = (uint8_t)(capabilities & 0xf); |
| ND_PRINT((ndo, " M: %u P: %u H: %u L: %u User-agent: ", |
| M, P, H, L |
| )); |
| safeputs(ndo, value + 4, bodylen - 4); |
| } |
| break; |
| |
| case HNCP_EXTERNAL_CONNECTION: { |
| /* Container TLV */ |
| hncp_print_rec(ndo, value, bodylen, indent+1); |
| } |
| break; |
| |
| case HNCP_DELEGATED_PREFIX: { |
| int l; |
| if (bodylen < 9 || bodylen < 9 + (value[8] + 7) / 8) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| ND_PRINT((ndo, " VLSO: %s PLSO: %s Prefix: ", |
| format_interval(EXTRACT_32BITS(value)), |
| format_interval(EXTRACT_32BITS(value + 4)) |
| )); |
| l = print_prefix(ndo, value + 8, bodylen - 8); |
| if (l == -1) { |
| ND_PRINT((ndo, "(length is invalid)")); |
| break; |
| } |
| if (l < 0) { |
| /* |
| * We've already checked that we've captured the |
| * entire TLV, based on its length, so this will |
| * either be -1, meaning "the prefix length is |
| * greater than the longest possible address of |
| * that type" (i.e., > 32 for IPv4 or > 128 for |
| * IPv6", or -3, meaning "the prefix runs past |
| * the end of the TLV". |
| */ |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| l += 8 + (-l & 3); |
| |
| if (bodylen >= l) |
| hncp_print_rec(ndo, value + l, bodylen - l, indent+1); |
| } |
| break; |
| |
| case HNCP_PREFIX_POLICY: { |
| uint8_t policy; |
| int l; |
| if (bodylen < 1) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| policy = value[0]; |
| ND_PRINT((ndo, " type: ")); |
| if (policy == 0) { |
| if (bodylen != 1) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| ND_PRINT((ndo, "Internet connectivity")); |
| } else if (policy >= 1 && policy <= 128) { |
| ND_PRINT((ndo, "Dest-Prefix: ")); |
| l = print_prefix(ndo, value, bodylen); |
| if (l == -1) { |
| ND_PRINT((ndo, "(length is invalid)")); |
| break; |
| } |
| if (l < 0) { |
| /* |
| * We've already checked that we've captured the |
| * entire TLV, based on its length, so this will |
| * either be -1, meaning "the prefix length is |
| * greater than the longest possible address of |
| * that type" (i.e., > 32 for IPv4 or > 128 for |
| * IPv6", or -3, meaning "the prefix runs past |
| * the end of the TLV". |
| */ |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| } else if (policy == 129) { |
| ND_PRINT((ndo, "DNS domain: ")); |
| print_dns_label(ndo, value+1, bodylen-1, 1); |
| } else if (policy == 130) { |
| ND_PRINT((ndo, "Opaque UTF-8: ")); |
| safeputs(ndo, value + 1, bodylen - 1); |
| } else if (policy == 131) { |
| if (bodylen != 1) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| ND_PRINT((ndo, "Restrictive assignment")); |
| } else if (policy >= 132) { |
| ND_PRINT((ndo, "Unknown (%u)", policy)); /* Reserved for future additions */ |
| } |
| } |
| break; |
| |
| case HNCP_DHCPV4_DATA: { |
| if (bodylen == 0) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| if (dhcpv4_print(ndo, value, bodylen, indent+1) != 0) |
| goto invalid; |
| } |
| break; |
| |
| case HNCP_DHCPV6_DATA: { |
| if (bodylen == 0) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| if (dhcpv6_print(ndo, value, bodylen, indent+1) != 0) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| } |
| break; |
| |
| case HNCP_ASSIGNED_PREFIX: { |
| uint8_t prty; |
| int l; |
| if (bodylen < 6 || bodylen < 6 + (value[5] + 7) / 8) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| prty = (uint8_t)(value[4] & 0xf); |
| ND_PRINT((ndo, " EPID: %08x Prty: %u", |
| EXTRACT_32BITS(value), |
| prty |
| )); |
| ND_PRINT((ndo, " Prefix: ")); |
| if ((l = print_prefix(ndo, value + 5, bodylen - 5)) < 0) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| l += 5; |
| l += -l & 3; |
| |
| if (bodylen >= l) |
| hncp_print_rec(ndo, value + l, bodylen - l, indent+1); |
| } |
| break; |
| |
| case HNCP_NODE_ADDRESS: { |
| uint32_t endpoint_identifier; |
| const char *ip_address; |
| if (bodylen < 20) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| endpoint_identifier = EXTRACT_32BITS(value); |
| ip_address = format_ip6addr(ndo, value + 4); |
| ND_PRINT((ndo, " EPID: %08x IP Address: %s", |
| endpoint_identifier, |
| ip_address |
| )); |
| |
| hncp_print_rec(ndo, value + 20, bodylen - 20, indent+1); |
| } |
| break; |
| |
| case HNCP_DNS_DELEGATED_ZONE: { |
| const char *ip_address; |
| int len; |
| if (bodylen < 17) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| ip_address = format_ip6addr(ndo, value); |
| ND_PRINT((ndo, " IP-Address: %s %c%c%c ", |
| ip_address, |
| (value[16] & 4) ? 'l' : '-', |
| (value[16] & 2) ? 'b' : '-', |
| (value[16] & 1) ? 's' : '-' |
| )); |
| len = print_dns_label(ndo, value+17, bodylen-17, 1); |
| if (len < 0) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| len += 17; |
| len += -len & 3; |
| if (bodylen >= len) |
| hncp_print_rec(ndo, value+len, bodylen-len, indent+1); |
| } |
| break; |
| |
| case HNCP_DOMAIN_NAME: { |
| if (bodylen == 0) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| ND_PRINT((ndo, " Domain: ")); |
| print_dns_label(ndo, value, bodylen, 1); |
| } |
| break; |
| |
| case HNCP_NODE_NAME: { |
| u_int l; |
| if (bodylen < 17) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| l = value[16]; |
| if (bodylen < 17 + l) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| ND_PRINT((ndo, " IP-Address: %s Name: ", |
| format_ip6addr(ndo, value) |
| )); |
| if (l < 64) { |
| safeputchar(ndo, '"'); |
| safeputs(ndo, value + 17, l); |
| safeputchar(ndo, '"'); |
| } else { |
| ND_PRINT((ndo, "%s", istr)); |
| } |
| l += 17; |
| l += -l & 3; |
| if (bodylen >= l) |
| hncp_print_rec(ndo, value + l, bodylen - l, indent+1); |
| } |
| break; |
| |
| case HNCP_MANAGED_PSK: { |
| if (bodylen < 32) { |
| ND_PRINT((ndo, " %s", istr)); |
| break; |
| } |
| ND_PRINT((ndo, " PSK: %s", format_256(value))); |
| hncp_print_rec(ndo, value + 32, bodylen - 32, indent+1); |
| } |
| break; |
| |
| case RANGE_DNCP_RESERVED: |
| case RANGE_HNCP_UNASSIGNED: |
| case RANGE_DNCP_PRIVATE_USE: |
| case RANGE_DNCP_FUTURE_USE: |
| break; |
| |
| } |
| skip_multiline: |
| |
| i += 4 + bodylen + (-bodylen & 3); |
| } |
| print_type_in_line(ndo, last_type_mask, last_type_count, indent, &first_one); |
| |
| return; |
| |
| trunc: |
| ND_PRINT((ndo, "%s", "[|hncp]")); |
| return; |
| |
| invalid: |
| ND_PRINT((ndo, "%s", istr)); |
| return; |
| } |
