--- /dev/null
+/*
+ * 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.
+ */
+
+#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 }
+};
+
+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, "%016lx%016lx%016lx%016lx",
+ EXTRACT_64BITS(data),
+ EXTRACT_64BITS(data + 8),
+ EXTRACT_64BITS(data + 16),
+ EXTRACT_64BITS(data + 24)
+ );
+ return buf[i];
+}
+
+static const char *
+format_interval(const uint16_t n)
+{
+ static char buf[4][sizeof("000.00s")];
+ static int i = 0;
+ i = (i + 1) % 4;
+ if (n == 0)
+ return "0.0s (bogus)";
+ snprintf(buf[i], sizeof(buf[i]), "%u.%02us", n / 100, n % 100);
+ return buf[i];
+}
+
+static const char *
+format_ip6addr(netdissect_options *ndo, const u_char *cp)
+{
+ if (EXTRACT_64BITS(cp) == 0x0 && EXTRACT_32BITS(cp+8) == 0xffff)
+ return ipaddr_string(ndo, cp + 12);
+ else
+ return ip6addr_string(ndo, cp);
+}
+
+static int
+print_prefix(netdissect_options *ndo, const u_char *prefix, u_int max_length)
+{
+ int plenbytes;
+ static char buf[sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx::/128")];
+ static u_char prefix_v4[5];
+ if (prefix[0] >= 96 && max_length >= 13 && EXTRACT_64BITS(prefix+1) == 0x0 && EXTRACT_32BITS(prefix+9) == 0xffff) {
+ prefix_v4[0] = prefix[0]-96;
+ prefix_v4[1] = prefix[13];
+ prefix_v4[2] = prefix[14];
+ prefix_v4[3] = prefix[15];
+ prefix_v4[4] = prefix[16];
+ plenbytes = 12 + decode_prefix4(ndo, (const u_char *)prefix_v4, max_length-12, buf, 45);
+ } else {
+ plenbytes = decode_prefix6(ndo, prefix, max_length, buf, 45);
+ }
+
+ safeputs(ndo, (const u_char*)buf, 45);
+ 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) {
+ 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 ));
+
+ 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) {
+ 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 ));
+
+ 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 = -1;
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ hash = EXTRACT_64BITS(value);
+ ND_PRINT((ndo, " hash: %016lx", hash));
+ }
+ break;
+
+ case DNCP_NODE_STATE: {
+ const char *node_identifier, *time;
+ uint32_t sequence_number;
+ uint64_t hash;
+ if (bodylen < 20)
+ goto invalid;
+ node_identifier = format_nid(value);
+ sequence_number = EXTRACT_32BITS(value + 4);
+ time = format_interval(EXTRACT_32BITS(value + 8));
+ hash = EXTRACT_64BITS(value + 12);
+ ND_PRINT((ndo, " NID: %s seqno: %u %s hash: %016lx",
+ node_identifier,
+ sequence_number,
+ time,
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ ND_PRINT((ndo, " VLSO: %s PLSO: %s Prefix: ",
+ format_interval(EXTRACT_32BITS(value)),
+ format_interval(EXTRACT_32BITS(value + 4))
+ ));
+ if ((l = print_prefix(ndo, value + 8, bodylen - 8)) < 0)
+ goto invalid;
+ 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;
+ if (bodylen < 1)
+ goto invalid;
+ policy = value[0];
+ ND_PRINT((ndo, " type: "));
+ if (policy == 0) {
+ if (bodylen != 1)
+ goto invalid;
+ ND_PRINT((ndo, "Internet connectivity"));
+ } else if (policy >= 1 && policy <= 128) {
+ ND_PRINT((ndo, "Dest-Prefix: "));
+ print_prefix(ndo, value, bodylen);
+ } 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ if (dhcpv4_print(ndo, value, bodylen, indent+1) != 0)
+ goto invalid;
+ }
+ break;
+
+ case HNCP_DHCPV6_DATA: {
+ if (bodylen == 0)
+ goto invalid;
+ if (dhcpv6_print(ndo, value, bodylen, indent+1) != 0)
+ goto invalid;
+ }
+ break;
+
+ case HNCP_ASSIGNED_PREFIX: {
+ uint8_t prty;
+ int l;
+ if (bodylen < 6 || bodylen < 6 + (value[5] + 7) / 8)
+ goto invalid;
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ 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)
+ goto invalid;
+ ND_PRINT((ndo, " Domain: "));
+ print_dns_label(ndo, value, bodylen, 1);
+ }
+ break;
+
+ case HNCP_NODE_NAME: {
+ u_int l;
+ if (bodylen < 17)
+ goto invalid;
+ l = value[16];
+ if (bodylen < 17 + l)
+ goto invalid;
+ 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)
+ goto invalid;
+ 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;
+}
projects / tcpdump / commitdiff
