X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/99c91c3aec40b691641374f58e798bd8d6b657bd..5ef0bcb5edd748de9d9af13c40da0395dfdd94e8:/print-olsr.c diff --git a/print-olsr.c b/print-olsr.c index 97cf59b5..2b85d67c 100644 --- a/print-olsr.c +++ b/print-olsr.c @@ -13,17 +13,19 @@ * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE. * - * Optimized Link State Protocl (OLSR) as per rfc3626 - * - * Original code by Hannes Gredler + * Original code by Hannes Gredler * IPv6 additions by Florian Forster */ +/* \summary: Optimized Link State Routing Protocol (OLSR) printer */ + +/* specification: RFC 3626 */ + #ifdef HAVE_CONFIG_H -#include "config.h" +#include #endif -#include +#include "netdissect-stdinc.h" #include "netdissect.h" #include "addrtoname.h" @@ -61,8 +63,8 @@ */ struct olsr_common { - uint8_t packet_len[2]; - uint8_t packet_seq[2]; + nd_uint16_t packet_len; + nd_uint16_t packet_seq; }; #define OLSR_HELLO_MSG 1 /* rfc3626 */ @@ -87,50 +89,50 @@ static const struct tok olsr_msg_values[] = { }; struct olsr_msg4 { - uint8_t msg_type; - uint8_t vtime; - uint8_t msg_len[2]; - uint8_t originator[4]; - uint8_t ttl; - uint8_t hopcount; - uint8_t msg_seq[2]; + nd_uint8_t msg_type; + nd_uint8_t vtime; + nd_uint16_t msg_len; + nd_ipv4 originator; + nd_uint8_t ttl; + nd_uint8_t hopcount; + nd_uint16_t msg_seq; }; struct olsr_msg6 { - uint8_t msg_type; - uint8_t vtime; - uint8_t msg_len[2]; - uint8_t originator[16]; - uint8_t ttl; - uint8_t hopcount; - uint8_t msg_seq[2]; + nd_uint8_t msg_type; + nd_uint8_t vtime; + nd_uint16_t msg_len; + nd_ipv6 originator; + nd_uint8_t ttl; + nd_uint8_t hopcount; + nd_uint16_t msg_seq; }; struct olsr_hello { - uint8_t res[2]; - uint8_t htime; - uint8_t will; + nd_byte res[2]; + nd_uint8_t htime; + nd_uint8_t will; }; struct olsr_hello_link { - uint8_t link_code; - uint8_t res; - uint8_t len[2]; + nd_uint8_t link_code; + nd_byte res; + nd_uint16_t len; }; struct olsr_tc { - uint8_t ans_seq[2]; - uint8_t res[2]; + nd_uint16_t ans_seq; + nd_byte res[2]; }; struct olsr_hna4 { - uint8_t network[4]; - uint8_t mask[4]; + nd_ipv4 network; + nd_ipv4 mask; }; struct olsr_hna6 { - uint8_t network[16]; - uint8_t mask[16]; + nd_ipv6 network; + nd_ipv6 mask; }; @@ -173,17 +175,17 @@ static const struct tok olsr_neighbor_type_values[] = { }; struct olsr_lq_neighbor4 { - uint8_t neighbor[4]; - uint8_t link_quality; - uint8_t neighbor_link_quality; - uint8_t res[2]; + nd_ipv4 neighbor; + nd_uint8_t link_quality; + nd_uint8_t neighbor_link_quality; + nd_byte res[2]; }; struct olsr_lq_neighbor6 { - uint8_t neighbor[16]; - uint8_t link_quality; - uint8_t neighbor_link_quality; - uint8_t res[2]; + nd_ipv6 neighbor; + nd_uint8_t link_quality; + nd_uint8_t neighbor_link_quality; + nd_byte res[2]; }; #define MAX_SMARTGW_SPEED 320000000 @@ -211,8 +213,9 @@ static uint32_t deserialize_gw_speed(uint8_t value) { speed = (value >> 3) + 1; exp = value & 7; - while (exp-- > 0) { + while (exp != 0) { speed *= 10; + exp--; } return speed; } @@ -237,22 +240,22 @@ olsr_print_lq_neighbor4(netdissect_options *ndo, while (hello_len >= sizeof(struct olsr_lq_neighbor4)) { lq_neighbor = (const struct olsr_lq_neighbor4 *)msg_data; - if (!ND_TTEST(*lq_neighbor)) - return (-1); + ND_TCHECK_SIZE(lq_neighbor); - ND_PRINT((ndo, "\n\t neighbor %s, link-quality %.2f%%" + ND_PRINT("\n\t neighbor %s, link-quality %.2f%%" ", neighbor-link-quality %.2f%%", - ipaddr_string(ndo, lq_neighbor->neighbor), - ((double)lq_neighbor->link_quality/2.55), - ((double)lq_neighbor->neighbor_link_quality/2.55))); + GET_IPADDR_STRING(lq_neighbor->neighbor), + ((double) GET_U_1(lq_neighbor->link_quality)/2.55), + ((double) GET_U_1(lq_neighbor->neighbor_link_quality)/2.55)); msg_data += sizeof(struct olsr_lq_neighbor4); hello_len -= sizeof(struct olsr_lq_neighbor4); } return (0); +trunc: + return -1; } -#if INET6 static int olsr_print_lq_neighbor6(netdissect_options *ndo, const u_char *msg_data, u_int hello_len) @@ -262,21 +265,21 @@ olsr_print_lq_neighbor6(netdissect_options *ndo, while (hello_len >= sizeof(struct olsr_lq_neighbor6)) { lq_neighbor = (const struct olsr_lq_neighbor6 *)msg_data; - if (!ND_TTEST(*lq_neighbor)) - return (-1); + ND_TCHECK_SIZE(lq_neighbor); - ND_PRINT((ndo, "\n\t neighbor %s, link-quality %.2f%%" + ND_PRINT("\n\t neighbor %s, link-quality %.2f%%" ", neighbor-link-quality %.2f%%", - ip6addr_string(ndo, lq_neighbor->neighbor), - ((double)lq_neighbor->link_quality/2.55), - ((double)lq_neighbor->neighbor_link_quality/2.55))); + GET_IP6ADDR_STRING(lq_neighbor->neighbor), + ((double) GET_U_1(lq_neighbor->link_quality)/2.55), + ((double) GET_U_1(lq_neighbor->neighbor_link_quality)/2.55)); msg_data += sizeof(struct olsr_lq_neighbor6); hello_len -= sizeof(struct olsr_lq_neighbor6); } return (0); +trunc: + return -1; } -#endif /* INET6 */ /* * print a neighbor list. @@ -287,20 +290,16 @@ olsr_print_neighbor(netdissect_options *ndo, { int neighbor; - ND_PRINT((ndo, "\n\t neighbor\n\t\t")); + ND_PRINT("\n\t neighbor\n\t\t"); neighbor = 1; - while (hello_len >= sizeof(struct in_addr)) { - - if (!ND_TTEST2(*msg_data, sizeof(struct in_addr))) - return (-1); + while (hello_len >= sizeof(nd_ipv4)) { /* print 4 neighbors per line */ + ND_PRINT("%s%s", GET_IPADDR_STRING(msg_data), + neighbor % 4 == 0 ? "\n\t\t" : " "); - ND_PRINT((ndo, "%s%s", ipaddr_string(ndo, msg_data), - neighbor % 4 == 0 ? "\n\t\t" : " ")); - - msg_data += sizeof(struct in_addr); - hello_len -= sizeof(struct in_addr); + msg_data += sizeof(nd_ipv4); + hello_len -= sizeof(nd_ipv4); } return (0); } @@ -326,21 +325,22 @@ olsr_print(netdissect_options *ndo, uint8_t link_type, neighbor_type; const u_char *tptr, *msg_data; + ndo->ndo_protocol = "olsr"; tptr = pptr; if (length < sizeof(struct olsr_common)) { goto trunc; } - ND_TCHECK2(*tptr, sizeof(struct olsr_common)); + ND_TCHECK_LEN(tptr, sizeof(struct olsr_common)); ptr.common = (const struct olsr_common *)tptr; - length = min(length, EXTRACT_16BITS(ptr.common->packet_len)); + length = ND_MIN(length, GET_BE_U_2(ptr.common->packet_len)); - ND_PRINT((ndo, "OLSRv%i, seq 0x%04x, length %u", + ND_PRINT("OLSRv%i, seq 0x%04x, length %u", (is_ipv6 == 0) ? 4 : 6, - EXTRACT_16BITS(ptr.common->packet_seq), - length)); + GET_BE_U_2(ptr.common->packet_seq), + length); tptr += sizeof(struct olsr_common); @@ -359,14 +359,12 @@ olsr_print(netdissect_options *ndo, } msgptr; int msg_len_valid = 0; - ND_TCHECK2(*tptr, sizeof(struct olsr_msg4)); - -#if INET6 if (is_ipv6) { + ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg6)); msgptr.v6 = (const struct olsr_msg6 *) tptr; - msg_type = msgptr.v6->msg_type; - msg_len = EXTRACT_16BITS(msgptr.v6->msg_len); + msg_type = GET_U_1(msgptr.v6->msg_type); + msg_len = GET_BE_U_2(msgptr.v6->msg_len); if ((msg_len >= sizeof (struct olsr_msg6)) && (msg_len <= length)) msg_len_valid = 1; @@ -376,15 +374,15 @@ olsr_print(netdissect_options *ndo, return; } - ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u" + ND_PRINT("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u" "\n\t vtime %.3fs, msg-seq 0x%04x, length %u%s", tok2str(olsr_msg_values, "Unknown", msg_type), - msg_type, ip6addr_string(ndo, msgptr.v6->originator), - msgptr.v6->ttl, - msgptr.v6->hopcount, - ME_TO_DOUBLE(msgptr.v6->vtime), - EXTRACT_16BITS(msgptr.v6->msg_seq), - msg_len, (msg_len_valid == 0) ? " (invalid)" : "")); + msg_type, GET_IP6ADDR_STRING(msgptr.v6->originator), + GET_U_1(msgptr.v6->ttl), + GET_U_1(msgptr.v6->hopcount), + ME_TO_DOUBLE(GET_U_1(msgptr.v6->vtime)), + GET_BE_U_2(msgptr.v6->msg_seq), + msg_len, (msg_len_valid == 0) ? " (invalid)" : ""); if (!msg_len_valid) { return; } @@ -393,11 +391,11 @@ olsr_print(netdissect_options *ndo, msg_data = tptr + sizeof(struct olsr_msg6); } else /* (!is_ipv6) */ -#endif /* INET6 */ { + ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg4)); msgptr.v4 = (const struct olsr_msg4 *) tptr; - msg_type = msgptr.v4->msg_type; - msg_len = EXTRACT_16BITS(msgptr.v4->msg_len); + msg_type = GET_U_1(msgptr.v4->msg_type); + msg_len = GET_BE_U_2(msgptr.v4->msg_len); if ((msg_len >= sizeof (struct olsr_msg4)) && (msg_len <= length)) msg_len_valid = 1; @@ -407,15 +405,15 @@ olsr_print(netdissect_options *ndo, return; } - ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u" + ND_PRINT("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u" "\n\t vtime %.3fs, msg-seq 0x%04x, length %u%s", tok2str(olsr_msg_values, "Unknown", msg_type), - msg_type, ipaddr_string(ndo, msgptr.v4->originator), - msgptr.v4->ttl, - msgptr.v4->hopcount, - ME_TO_DOUBLE(msgptr.v4->vtime), - EXTRACT_16BITS(msgptr.v4->msg_seq), - msg_len, (msg_len_valid == 0) ? " (invalid)" : "")); + msg_type, GET_IPADDR_STRING(msgptr.v4->originator), + GET_U_1(msgptr.v4->ttl), + GET_U_1(msgptr.v4->hopcount), + ME_TO_DOUBLE(GET_U_1(msgptr.v4->vtime)), + GET_BE_U_2(msgptr.v4->msg_seq), + msg_len, (msg_len_valid == 0) ? " (invalid)" : ""); if (!msg_len_valid) { return; } @@ -429,11 +427,12 @@ olsr_print(netdissect_options *ndo, case OLSR_HELLO_LQ_MSG: if (msg_tlen < sizeof(struct olsr_hello)) goto trunc; - ND_TCHECK2(*msg_data, sizeof(struct olsr_hello)); + ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hello)); ptr.hello = (const struct olsr_hello *)msg_data; - ND_PRINT((ndo, "\n\t hello-time %.3fs, MPR willingness %u", - ME_TO_DOUBLE(ptr.hello->htime), ptr.hello->will)); + ND_PRINT("\n\t hello-time %.3fs, MPR willingness %u", + ME_TO_DOUBLE(GET_U_1(ptr.hello->htime)), + GET_U_1(ptr.hello->will)); msg_data += sizeof(struct olsr_hello); msg_tlen -= sizeof(struct olsr_hello); @@ -443,23 +442,23 @@ olsr_print(netdissect_options *ndo, /* * link-type. */ - ND_TCHECK2(*msg_data, sizeof(struct olsr_hello_link)); + ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hello_link)); ptr.hello_link = (const struct olsr_hello_link *)msg_data; - hello_len = EXTRACT_16BITS(ptr.hello_link->len); - link_type = OLSR_EXTRACT_LINK_TYPE(ptr.hello_link->link_code); - neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(ptr.hello_link->link_code); + hello_len = GET_BE_U_2(ptr.hello_link->len); + link_type = OLSR_EXTRACT_LINK_TYPE(GET_U_1(ptr.hello_link->link_code)); + neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(GET_U_1(ptr.hello_link->link_code)); if ((hello_len <= msg_tlen) && (hello_len >= sizeof(struct olsr_hello_link))) hello_len_valid = 1; - ND_PRINT((ndo, "\n\t link-type %s, neighbor-type %s, len %u%s", + ND_PRINT("\n\t link-type %s, neighbor-type %s, len %u%s", tok2str(olsr_link_type_values, "Unknown", link_type), tok2str(olsr_neighbor_type_values, "Unknown", neighbor_type), hello_len, - (hello_len_valid == 0) ? " (invalid)" : "")); + (hello_len_valid == 0) ? " (invalid)" : ""); if (hello_len_valid == 0) break; @@ -468,18 +467,15 @@ olsr_print(netdissect_options *ndo, msg_tlen -= sizeof(struct olsr_hello_link); hello_len -= sizeof(struct olsr_hello_link); - ND_TCHECK2(*msg_data, hello_len); + ND_TCHECK_LEN(msg_data, hello_len); if (msg_type == OLSR_HELLO_MSG) { if (olsr_print_neighbor(ndo, msg_data, hello_len) == -1) goto trunc; } else { -#if INET6 if (is_ipv6) { if (olsr_print_lq_neighbor6(ndo, msg_data, hello_len) == -1) goto trunc; - } else -#endif - { + } else { if (olsr_print_lq_neighbor4(ndo, msg_data, hello_len) == -1) goto trunc; } @@ -494,11 +490,11 @@ olsr_print(netdissect_options *ndo, case OLSR_TC_LQ_MSG: if (msg_tlen < sizeof(struct olsr_tc)) goto trunc; - ND_TCHECK2(*msg_data, sizeof(struct olsr_tc)); + ND_TCHECK_LEN(msg_data, sizeof(struct olsr_tc)); ptr.tc = (const struct olsr_tc *)msg_data; - ND_PRINT((ndo, "\n\t advertised neighbor seq 0x%04x", - EXTRACT_16BITS(ptr.tc->ans_seq))); + ND_PRINT("\n\t advertised neighbor seq 0x%04x", + GET_BE_U_2(ptr.tc->ans_seq)); msg_data += sizeof(struct olsr_tc); msg_tlen -= sizeof(struct olsr_tc); @@ -506,13 +502,10 @@ olsr_print(netdissect_options *ndo, if (olsr_print_neighbor(ndo, msg_data, msg_tlen) == -1) goto trunc; } else { -#if INET6 if (is_ipv6) { if (olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen) == -1) goto trunc; - } else -#endif - { + } else { if (olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen) == -1) goto trunc; } @@ -521,23 +514,16 @@ olsr_print(netdissect_options *ndo, case OLSR_MID_MSG: { - size_t addr_size = sizeof(struct in_addr); + u_int addr_size = (u_int)sizeof(nd_ipv4); -#if INET6 if (is_ipv6) - addr_size = sizeof(struct in6_addr); -#endif + addr_size = (u_int)sizeof(nd_ipv6); while (msg_tlen >= addr_size) { - ND_TCHECK2(*msg_data, addr_size); -#if INET6 - ND_PRINT((ndo, "\n\t interface address %s", - is_ipv6 ? ip6addr_string(ndo, msg_data) : - ipaddr_string(ndo, msg_data))); -#else - ND_PRINT((ndo, "\n\t interface address %s", - ipaddr_string(ndo, msg_data))); -#endif + ND_TCHECK_LEN(msg_data, addr_size); + ND_PRINT("\n\t interface address %s", + is_ipv6 ? GET_IP6ADDR_STRING(msg_data) : + GET_IPADDR_STRING(msg_data)); msg_data += addr_size; msg_tlen -= addr_size; @@ -546,39 +532,37 @@ olsr_print(netdissect_options *ndo, } case OLSR_HNA_MSG: -#if INET6 if (is_ipv6) { int i = 0; - ND_PRINT((ndo, "\n\t Advertised networks (total %u)", - (unsigned int) (msg_tlen / sizeof(struct olsr_hna6)))); + ND_PRINT("\n\t Advertised networks (total %u)", + (unsigned int) (msg_tlen / sizeof(struct olsr_hna6))); while (msg_tlen >= sizeof(struct olsr_hna6)) { const struct olsr_hna6 *hna6; - ND_TCHECK2(*msg_data, sizeof(struct olsr_hna6)); + ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hna6)); hna6 = (const struct olsr_hna6 *)msg_data; - ND_PRINT((ndo, "\n\t #%i: %s/%u", - i, ip6addr_string(ndo, hna6->network), - mask62plen (hna6->mask))); + ND_PRINT("\n\t #%i: %s/%u", + i, GET_IP6ADDR_STRING(hna6->network), + mask62plen (hna6->mask)); msg_data += sizeof(struct olsr_hna6); msg_tlen -= sizeof(struct olsr_hna6); } } else -#endif { int col = 0; - ND_PRINT((ndo, "\n\t Advertised networks (total %u)", - (unsigned int) (msg_tlen / sizeof(struct olsr_hna4)))); + ND_PRINT("\n\t Advertised networks (total %u)", + (unsigned int) (msg_tlen / sizeof(struct olsr_hna4))); while (msg_tlen >= sizeof(struct olsr_hna4)) { - ND_TCHECK2(*msg_data, sizeof(struct olsr_hna4)); + ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hna4)); ptr.hna = (const struct olsr_hna4 *)msg_data; @@ -588,7 +572,7 @@ olsr_print(netdissect_options *ndo, !ptr.hna->mask[GW_HNA_PAD] && ptr.hna->mask[GW_HNA_FLAGS]) { /* smart gateway */ - ND_PRINT((ndo, "%sSmart-Gateway:%s%s%s%s%s %u/%u", + ND_PRINT("%sSmart-Gateway:%s%s%s%s%s %u/%u", col == 0 ? "\n\t " : ", ", /* indent */ /* sgw */ /* LINKSPEED */ @@ -614,13 +598,13 @@ olsr_print(netdissect_options *ndo, (ptr.hna->mask[GW_HNA_FLAGS] & GW_HNA_FLAG_LINKSPEED) ? deserialize_gw_speed(ptr.hna->mask[GW_HNA_DOWNLINK]) : 0 - )); + ); } else { /* normal route */ - ND_PRINT((ndo, "%s%s/%u", + ND_PRINT("%s%s/%u", col == 0 ? "\n\t " : ", ", - ipaddr_string(ndo, ptr.hna->network), - mask2plen(EXTRACT_32BITS(ptr.hna->mask)))); + GET_IPADDR_STRING(ptr.hna->network), + mask2plen(GET_BE_U_4(ptr.hna->mask))); } msg_data += sizeof(struct olsr_hna4); @@ -633,25 +617,27 @@ olsr_print(netdissect_options *ndo, case OLSR_NAMESERVICE_MSG: { - u_int name_entries = EXTRACT_16BITS(msg_data+2); - u_int addr_size = 4; - int name_entries_valid = 0; + u_int name_entries; + u_int addr_size; + int name_entries_valid; u_int i; + if (msg_tlen < 4) + goto trunc; + + name_entries = GET_BE_U_2(msg_data + 2); + addr_size = 4; if (is_ipv6) addr_size = 16; + name_entries_valid = 0; if ((name_entries > 0) && ((name_entries * (4 + addr_size)) <= msg_tlen)) name_entries_valid = 1; - if (msg_tlen < 4) - goto trunc; - ND_TCHECK2(*msg_data, 4); - - ND_PRINT((ndo, "\n\t Version %u, Entries %u%s", - EXTRACT_16BITS(msg_data), - name_entries, (name_entries_valid == 0) ? " (invalid)" : "")); + ND_PRINT("\n\t Version %u, Entries %u%s", + GET_BE_U_2(msg_data), + name_entries, (name_entries_valid == 0) ? " (invalid)" : ""); if (name_entries_valid == 0) break; @@ -664,10 +650,9 @@ olsr_print(netdissect_options *ndo, if (msg_tlen < 4) break; - ND_TCHECK2(*msg_data, 4); - name_entry_type = EXTRACT_16BITS(msg_data); - name_entry_len = EXTRACT_16BITS(msg_data+2); + name_entry_type = GET_BE_U_2(msg_data); + name_entry_len = GET_BE_U_2(msg_data + 2); msg_data += 4; msg_tlen -= 4; @@ -675,9 +660,9 @@ olsr_print(netdissect_options *ndo, if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen)) name_entry_len_valid = 1; - ND_PRINT((ndo, "\n\t #%u: type %#06x, length %u%s", + ND_PRINT("\n\t #%u: type %#06x, length %u%s", (unsigned int) i, name_entry_type, - name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : "")); + name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : ""); if (name_entry_len_valid == 0) break; @@ -690,18 +675,17 @@ olsr_print(netdissect_options *ndo, if (msg_tlen < addr_size + name_entry_len + name_entry_padding) goto trunc; - ND_TCHECK2(*msg_data, addr_size + name_entry_len + name_entry_padding); + ND_TCHECK_LEN(msg_data, + addr_size + name_entry_len + name_entry_padding); -#if INET6 if (is_ipv6) - ND_PRINT((ndo, ", address %s, name \"", - ip6addr_string(ndo, msg_data))); + ND_PRINT(", address %s, name \"", + GET_IP6ADDR_STRING(msg_data)); else -#endif - ND_PRINT((ndo, ", address %s, name \"", - ipaddr_string(ndo, msg_data))); - (void)fn_printn(ndo, msg_data + addr_size, name_entry_len, NULL); - ND_PRINT((ndo, "\"")); + ND_PRINT(", address %s, name \"", + GET_IPADDR_STRING(msg_data)); + (void)nd_printn(ndo, msg_data + addr_size, name_entry_len, NULL); + ND_PRINT("\""); msg_data += addr_size + name_entry_len + name_entry_padding; msg_tlen -= addr_size + name_entry_len + name_entry_padding; @@ -724,12 +708,5 @@ olsr_print(netdissect_options *ndo, return; trunc: - ND_PRINT((ndo, "[|olsr]")); + nd_print_trunc(ndo); } - -/* - * Local Variables: - * c-style: whitesmith - * c-basic-offset: 4 - * End: - */