X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/568866ab384cea6a370bcbf1c811acb66dd72e97..1a04b92e365f5ed01ca38619b41bcc4fc9cbd63c:/print-olsr.c?ds=sidebyside diff --git a/print-olsr.c b/print-olsr.c index dfa09da4..d307184d 100644 --- a/print-olsr.c +++ b/print-olsr.c @@ -13,19 +13,21 @@ * 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" #endif -#include +#include -#include "interface.h" +#include "netdissect.h" #include "addrtoname.h" #include "extract.h" @@ -252,7 +254,6 @@ olsr_print_lq_neighbor4(netdissect_options *ndo, return (0); } -#if INET6 static int olsr_print_lq_neighbor6(netdissect_options *ndo, const u_char *msg_data, u_int hello_len) @@ -276,7 +277,6 @@ olsr_print_lq_neighbor6(netdissect_options *ndo, } return (0); } -#endif /* INET6 */ /* * print a neighbor list. @@ -292,7 +292,7 @@ olsr_print_neighbor(netdissect_options *ndo, while (hello_len >= sizeof(struct in_addr)) { - if (!ND_TTEST2(*msg_data, sizeof(struct in_addr))) + if (!ND_TTEST_LEN(msg_data, sizeof(struct in_addr))) return (-1); /* print 4 neighbors per line */ @@ -332,14 +332,14 @@ olsr_print(netdissect_options *ndo, 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 = min(length, EXTRACT_BE_U_2(ptr.common->packet_len)); ND_PRINT((ndo, "OLSRv%i, seq 0x%04x, length %u", (is_ipv6 == 0) ? 4 : 6, - EXTRACT_16BITS(ptr.common->packet_seq), + EXTRACT_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_len = EXTRACT_BE_U_2(msgptr.v6->msg_len); if ((msg_len >= sizeof (struct olsr_msg6)) && (msg_len <= length)) msg_len_valid = 1; @@ -383,7 +381,7 @@ olsr_print(netdissect_options *ndo, msgptr.v6->ttl, msgptr.v6->hopcount, ME_TO_DOUBLE(msgptr.v6->vtime), - EXTRACT_16BITS(msgptr.v6->msg_seq), + EXTRACT_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_len = EXTRACT_BE_U_2(msgptr.v4->msg_len); if ((msg_len >= sizeof (struct olsr_msg4)) && (msg_len <= length)) msg_len_valid = 1; @@ -414,7 +412,7 @@ olsr_print(netdissect_options *ndo, msgptr.v4->ttl, msgptr.v4->hopcount, ME_TO_DOUBLE(msgptr.v4->vtime), - EXTRACT_16BITS(msgptr.v4->msg_seq), + EXTRACT_BE_U_2(msgptr.v4->msg_seq), msg_len, (msg_len_valid == 0) ? " (invalid)" : "")); if (!msg_len_valid) { return; @@ -429,7 +427,7 @@ 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", @@ -443,11 +441,11 @@ 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); + hello_len = EXTRACT_BE_U_2(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); @@ -468,18 +466,15 @@ 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 +489,11 @@ 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))); + EXTRACT_BE_U_2(ptr.tc->ans_seq))); msg_data += sizeof(struct olsr_tc); msg_tlen -= sizeof(struct olsr_tc); @@ -506,13 +501,10 @@ 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; } @@ -523,21 +515,14 @@ olsr_print(netdissect_options *ndo, { size_t addr_size = sizeof(struct in_addr); -#if INET6 if (is_ipv6) addr_size = sizeof(struct in6_addr); -#endif while (msg_tlen >= addr_size) { - ND_TCHECK2(*msg_data, addr_size); -#if INET6 + ND_TCHECK_LEN(msg_data, addr_size); 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 msg_data += addr_size; msg_tlen -= addr_size; @@ -546,7 +531,6 @@ olsr_print(netdissect_options *ndo, } case OLSR_HNA_MSG: -#if INET6 if (is_ipv6) { int i = 0; @@ -557,7 +541,7 @@ olsr_print(netdissect_options *ndo, 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; @@ -570,7 +554,6 @@ olsr_print(netdissect_options *ndo, } } else -#endif { int col = 0; @@ -578,7 +561,7 @@ olsr_print(netdissect_options *ndo, (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; @@ -620,7 +603,7 @@ olsr_print(netdissect_options *ndo, ND_PRINT((ndo, "%s%s/%u", col == 0 ? "\n\t " : ", ", ipaddr_string(ndo, ptr.hna->network), - mask2plen(EXTRACT_32BITS(ptr.hna->mask)))); + mask2plen(EXTRACT_BE_U_4(ptr.hna->mask)))); } msg_data += sizeof(struct olsr_hna4); @@ -633,24 +616,27 @@ 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; + ND_TCHECK_4(msg_data); + + name_entries = EXTRACT_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), + EXTRACT_BE_U_2(msg_data), name_entries, (name_entries_valid == 0) ? " (invalid)" : "")); if (name_entries_valid == 0) @@ -664,10 +650,10 @@ olsr_print(netdissect_options *ndo, if (msg_tlen < 4) break; - ND_TCHECK2(*msg_data, 4); + ND_TCHECK_4(msg_data); - name_entry_type = EXTRACT_16BITS(msg_data); - name_entry_len = EXTRACT_16BITS(msg_data+2); + name_entry_type = EXTRACT_BE_U_2(msg_data); + name_entry_len = EXTRACT_BE_U_2(msg_data + 2); msg_data += 4; msg_tlen -= 4; @@ -690,14 +676,13 @@ 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))); 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);