/* * 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 #endif #include "netdissect-stdinc.h" #include #include #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) { ndo->ndo_protocol = "hncp"; ND_PRINT("hncp (%u)", 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 /* This is correct, see RFC 7788 Errata ID 5113. */ #define HNCP_DHCPV6_DATA 38 /* idem */ #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 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(netdissect_options *ndo, const u_char *data) { static char buf[4][sizeof("01:01:01:01")]; static int i = 0; i = (i + 1) % 4; snprintf(buf[i], sizeof(buf[i]), "%02x:%02x:%02x:%02x", GET_U_1(data), GET_U_1(data + 1), GET_U_1(data + 2), GET_U_1(data + 3)); return buf[i]; } static const char * format_256(netdissect_options *ndo, const u_char *data) { static char buf[4][sizeof("0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef")]; static int i = 0; i = (i + 1) % 4; snprintf(buf[i], sizeof(buf[i]), "%016" PRIx64 "%016" PRIx64 "%016" PRIx64 "%016" PRIx64, GET_BE_U_8(data), GET_BE_U_8(data + 8), GET_BE_U_8(data + 16), GET_BE_U_8(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 (GET_U_1(prefix) >= 96 && max_length >= IPV4_MAPPED_HEADING_LEN + 1 && is_ipv4_mapped_address(prefix + 1)) { nd_ipv4 addr; u_int plen; plen = GET_U_1(prefix) - 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 + IPV4_MAPPED_HEADING_LEN + 1, plenbytes); if (plen % 8) { ((u_char *)&addr)[plenbytes - 1] &= ((0xff00 >> (plen % 8)) & 0xff); } snprintf(buf, sizeof(buf), "%s/%u", ipaddr_string(ndo, (const u_char *)&addr), plen); plenbytes += 1 + IPV4_MAPPED_HEADING_LEN; } else { plenbytes = decode_prefix6(ndo, prefix, max_length, buf, sizeof(buf)); if (plenbytes < 0) return plenbytes; } ND_PRINT("%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 = GET_U_1(cp + length); length++; if (lab_length == 0) return (int)length; if (length > 1 && print) ND_PRINT("."); if (length+lab_length > max_length) { if (print) (void)nd_printzp(ndo, cp+length, max_length-length, NULL); break; } if (print) (void)nd_printzp(ndo, cp+length, lab_length, NULL); length += lab_length; } if (print) ND_PRINT("[|DNS]"); return -1; } static int dhcpv4_print(netdissect_options *ndo, const u_char *cp, u_int length, int indent) { u_int i, t; const uint8_t *tlv, *value; uint8_t type, optlen; i = 0; while (i < length) { if (i + 2 > length) return -1; tlv = cp + i; type = GET_U_1(tlv); optlen = GET_U_1(tlv + 1); value = tlv + 2; ND_PRINT("\n"); for (t = indent; t > 0; t--) ND_PRINT("\t"); ND_PRINT("%s", tok2str(dh4opt_str, "Unknown", type)); ND_PRINT(" (%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(" %s", ipaddr_string(ndo, value + t)); } break; case DH4OPT_DOMAIN_SEARCH: { const u_char *tp = value; while (tp < value + optlen) { ND_PRINT(" "); if ((tp = fqdn_print(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 = GET_BE_U_2(tlv); optlen = GET_BE_U_2(tlv + 2); value = tlv + 4; ND_PRINT("\n"); for (t = indent; t > 0; t--) ND_PRINT("\t"); ND_PRINT("%s", tok2str(dh6opt_str, "Unknown", type)); ND_PRINT(" (%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_invalid(ndo); return -1; } for (t = 0; t < optlen; t += 16) ND_PRINT(" %s", ip6addr_string(ndo, value + t)); } break; case DH6OPT_DOMAIN_LIST: { const u_char *tp = value; while (tp < value + optlen) { ND_PRINT(" "); if ((tp = fqdn_print(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("\n"); for (t = indent; t > 0; t--) ND_PRINT("\t"); } else { ND_PRINT(" "); } } else { ND_PRINT(", "); } ND_PRINT("%s", tok2str(type_values, "Easter Egg", type)); if (count > 1) ND_PRINT(" (x%d)", count); } } static 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 uint8_t *tlv, *value; uint16_t type, bodylen; uint32_t type_mask; i = 0; while (i < length) { tlv = cp + i; if (!in_line) { ND_PRINT("\n"); for (t = indent; t > 0; t--) ND_PRINT("\t"); } ND_TCHECK_4(tlv); if (i + 4 > length) goto invalid; type = GET_BE_U_2(tlv); bodylen = GET_BE_U_2(tlv + 2); value = tlv + 4; ND_TCHECK_LEN(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("%s", tok2str(type_values, "Easter Egg (42)", type_mask) ); if (type_mask > 0xffff) ND_PRINT(": type=%u", type ); ND_PRINT(" (%u)", bodylen + 4 ); switch (type_mask) { case DNCP_REQUEST_NETWORK_STATE: { if (bodylen != 0) nd_print_invalid(ndo); } break; case DNCP_REQUEST_NODE_STATE: { const char *node_identifier; if (bodylen != 4) { nd_print_invalid(ndo); break; } node_identifier = format_nid(ndo, value); ND_PRINT(" NID: %s", node_identifier); } break; case DNCP_NODE_ENDPOINT: { const char *node_identifier; uint32_t endpoint_identifier; if (bodylen != 8) { nd_print_invalid(ndo); break; } node_identifier = format_nid(ndo, value); endpoint_identifier = GET_BE_U_4(value + 4); ND_PRINT(" NID: %s EPID: %08x", node_identifier, endpoint_identifier ); } break; case DNCP_NETWORK_STATE: { uint64_t hash; if (bodylen != 8) { nd_print_invalid(ndo); break; } hash = GET_BE_U_8(value); ND_PRINT(" 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_invalid(ndo); break; } node_identifier = format_nid(ndo, value); sequence_number = GET_BE_U_4(value + 4); interval = format_interval(GET_BE_U_4(value + 8)); hash = GET_BE_U_8(value + 12); ND_PRINT(" 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_invalid(ndo); break; } peer_node_identifier = format_nid(ndo, value); peer_endpoint_identifier = GET_BE_U_4(value + 4); endpoint_identifier = GET_BE_U_4(value + 8); ND_PRINT(" 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_invalid(ndo); break; } endpoint_identifier = GET_BE_U_4(value); interval = format_interval(GET_BE_U_4(value + 4)); ND_PRINT(" EPID: %08x Interval: %s", endpoint_identifier, interval ); } break; case DNCP_TRUST_VERDICT: { if (bodylen <= 36) { nd_print_invalid(ndo); break; } ND_PRINT(" Verdict: %u Fingerprint: %s Common Name: ", GET_U_1(value), format_256(ndo, value + 4)); (void)nd_printzp(ndo, value + 36, bodylen - 36, NULL); } break; case HNCP_HNCP_VERSION: { uint16_t capabilities; uint8_t M, P, H, L; if (bodylen < 5) { nd_print_invalid(ndo); break; } capabilities = GET_BE_U_2(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(" M: %u P: %u H: %u L: %u User-agent: ", M, P, H, L ); (void)nd_printzp(ndo, value + 4, bodylen - 4, NULL); } 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 + (GET_U_1(value + 8) + 7) / 8) { nd_print_invalid(ndo); break; } ND_PRINT(" VLSO: %s PLSO: %s Prefix: ", format_interval(GET_BE_U_4(value)), format_interval(GET_BE_U_4(value + 4)) ); l = print_prefix(ndo, value + 8, bodylen - 8); if (l == -1) { ND_PRINT("(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_invalid(ndo); 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_invalid(ndo); break; } policy = GET_U_1(value); ND_PRINT(" type: "); if (policy == 0) { if (bodylen != 1) { nd_print_invalid(ndo); break; } ND_PRINT("Internet connectivity"); } else if (policy >= 1 && policy <= 128) { ND_PRINT("Dest-Prefix: "); l = print_prefix(ndo, value, bodylen); if (l == -1) { ND_PRINT("(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_invalid(ndo); break; } } else if (policy == 129) { ND_PRINT("DNS domain: "); print_dns_label(ndo, value+1, bodylen-1, 1); } else if (policy == 130) { ND_PRINT("Opaque UTF-8: "); (void)nd_printzp(ndo, value + 1, bodylen - 1, NULL); } else if (policy == 131) { if (bodylen != 1) { nd_print_invalid(ndo); break; } ND_PRINT("Restrictive assignment"); } else if (policy >= 132) { ND_PRINT("Unknown (%u)", policy); /* Reserved for future additions */ } } break; case HNCP_DHCPV4_DATA: { if (bodylen == 0) { nd_print_invalid(ndo); break; } if (dhcpv4_print(ndo, value, bodylen, indent+1) != 0) goto invalid; } break; case HNCP_DHCPV6_DATA: { if (bodylen == 0) { nd_print_invalid(ndo); break; } if (dhcpv6_print(ndo, value, bodylen, indent+1) != 0) { nd_print_invalid(ndo); break; } } break; case HNCP_ASSIGNED_PREFIX: { uint8_t prty; int l; if (bodylen < 6 || bodylen < 6 + (GET_U_1(value + 5) + 7) / 8) { nd_print_invalid(ndo); break; } prty = GET_U_1(value + 4) & 0xf; ND_PRINT(" EPID: %08x Prty: %u", GET_BE_U_4(value), prty ); ND_PRINT(" Prefix: "); if ((l = print_prefix(ndo, value + 5, bodylen - 5)) < 0) { nd_print_invalid(ndo); 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_invalid(ndo); break; } endpoint_identifier = GET_BE_U_4(value); ip_address = format_ip6addr(ndo, value + 4); ND_PRINT(" 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_invalid(ndo); break; } ip_address = format_ip6addr(ndo, value); ND_PRINT(" IP-Address: %s %c%c%c ", ip_address, (GET_U_1(value + 16) & 4) ? 'l' : '-', (GET_U_1(value + 16) & 2) ? 'b' : '-', (GET_U_1(value + 16) & 1) ? 's' : '-' ); len = print_dns_label(ndo, value+17, bodylen-17, 1); if (len < 0) { nd_print_invalid(ndo); 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_invalid(ndo); break; } ND_PRINT(" Domain: "); print_dns_label(ndo, value, bodylen, 1); } break; case HNCP_NODE_NAME: { u_int l; if (bodylen < 17) { nd_print_invalid(ndo); break; } l = GET_U_1(value + 16); if (bodylen < 17 + l) { nd_print_invalid(ndo); break; } ND_PRINT(" IP-Address: %s Name: ", format_ip6addr(ndo, value) ); if (l < 64) { ND_PRINT("\""); (void)nd_printzp(ndo, value + 17, l, NULL); ND_PRINT("\""); } else { nd_print_invalid(ndo); } 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_invalid(ndo); break; } ND_PRINT(" PSK: %s", format_256(ndo, 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_trunc(ndo); return; invalid: nd_print_invalid(ndo); return; }