X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/a14faa6873c8ab3cc69ba861af9d733a9c13e0df..HEAD:/print-olsr.c diff --git a/print-olsr.c b/print-olsr.c index f22c82a8..5591c17a 100644 --- a/print-olsr.c +++ b/print-olsr.c @@ -21,12 +21,11 @@ /* specification: RFC 3626 */ -#ifdef HAVE_CONFIG_H #include -#endif #include "netdissect-stdinc.h" +#define ND_LONGJMP_FROM_TCHECK #include "netdissect.h" #include "addrtoname.h" #include "extract.h" @@ -231,7 +230,7 @@ static uint32_t deserialize_gw_speed(uint8_t value) { /* * print a neighbor list with LQ extensions. */ -static int +static void olsr_print_lq_neighbor4(netdissect_options *ndo, const u_char *msg_data, u_int hello_len) { @@ -244,19 +243,16 @@ olsr_print_lq_neighbor4(netdissect_options *ndo, ND_PRINT("\n\t neighbor %s, link-quality %.2f%%" ", neighbor-link-quality %.2f%%", - ipaddr_string(ndo, lq_neighbor->neighbor), - ((double)EXTRACT_U_1(lq_neighbor->link_quality)/2.55), - ((double)EXTRACT_U_1(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; } -static int +static void olsr_print_lq_neighbor6(netdissect_options *ndo, const u_char *msg_data, u_int hello_len) { @@ -269,22 +265,19 @@ olsr_print_lq_neighbor6(netdissect_options *ndo, ND_PRINT("\n\t neighbor %s, link-quality %.2f%%" ", neighbor-link-quality %.2f%%", - ip6addr_string(ndo, lq_neighbor->neighbor), - ((double)EXTRACT_U_1(lq_neighbor->link_quality)/2.55), - ((double)EXTRACT_U_1(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; } /* * print a neighbor list. */ -static int +static void olsr_print_neighbor(netdissect_options *ndo, const u_char *msg_data, u_int hello_len) { @@ -294,19 +287,13 @@ olsr_print_neighbor(netdissect_options *ndo, neighbor = 1; while (hello_len >= sizeof(nd_ipv4)) { - - ND_TCHECK_LEN(msg_data, sizeof(nd_ipv4)); /* print 4 neighbors per line */ - - ND_PRINT("%s%s", ipaddr_string(ndo, msg_data), + ND_PRINT("%s%s", GET_IPADDR_STRING(msg_data), neighbor % 4 == 0 ? "\n\t\t" : " "); msg_data += sizeof(nd_ipv4); hello_len -= sizeof(nd_ipv4); } - return (0); -trunc: - return -1; } @@ -333,18 +320,16 @@ olsr_print(netdissect_options *ndo, ndo->ndo_protocol = "olsr"; tptr = pptr; - if (length < sizeof(struct olsr_common)) { - goto trunc; - } + nd_print_protocol_caps(ndo); + ND_PRINT("v%u", (is_ipv6) ? 6 : 4); - ND_TCHECK_LEN(tptr, sizeof(struct olsr_common)); + ND_ICHECKMSG_ZU("packet length", length, <, sizeof(struct olsr_common)); ptr.common = (const struct olsr_common *)tptr; - length = min(length, EXTRACT_BE_U_2(ptr.common->packet_len)); + length = ND_MIN(length, GET_BE_U_2(ptr.common->packet_len)); - ND_PRINT("OLSRv%i, seq 0x%04x, length %u", - (is_ipv6 == 0) ? 4 : 6, - EXTRACT_BE_U_2(ptr.common->packet_seq), + ND_PRINT(", seq 0x%04x, length %u", + GET_BE_U_2(ptr.common->packet_seq), length); tptr += sizeof(struct olsr_common); @@ -364,12 +349,11 @@ olsr_print(netdissect_options *ndo, } msgptr; int msg_len_valid = 0; - if (is_ipv6) - { + if (is_ipv6) { ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg6)); msgptr.v6 = (const struct olsr_msg6 *) tptr; - msg_type = EXTRACT_U_1(msgptr.v6->msg_type); - msg_len = EXTRACT_BE_U_2(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; @@ -382,11 +366,11 @@ olsr_print(netdissect_options *ndo, 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), - EXTRACT_U_1(msgptr.v6->ttl), - EXTRACT_U_1(msgptr.v6->hopcount), - ME_TO_DOUBLE(EXTRACT_U_1(msgptr.v6->vtime)), - EXTRACT_BE_U_2(msgptr.v6->msg_seq), + 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; @@ -394,13 +378,11 @@ olsr_print(netdissect_options *ndo, msg_tlen = msg_len - sizeof(struct olsr_msg6); msg_data = tptr + sizeof(struct olsr_msg6); - } - else /* (!is_ipv6) */ - { + } else { /* (!is_ipv6) */ ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg4)); msgptr.v4 = (const struct olsr_msg4 *) tptr; - msg_type = EXTRACT_U_1(msgptr.v4->msg_type); - msg_len = EXTRACT_BE_U_2(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; @@ -413,11 +395,11 @@ olsr_print(netdissect_options *ndo, 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), - EXTRACT_U_1(msgptr.v4->ttl), - EXTRACT_U_1(msgptr.v4->hopcount), - ME_TO_DOUBLE(EXTRACT_U_1(msgptr.v4->vtime)), - EXTRACT_BE_U_2(msgptr.v4->msg_seq), + 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; @@ -430,14 +412,13 @@ olsr_print(netdissect_options *ndo, switch (msg_type) { case OLSR_HELLO_MSG: case OLSR_HELLO_LQ_MSG: - if (msg_tlen < sizeof(struct olsr_hello)) - goto trunc; - ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hello)); + ND_ICHECKMSG_ZU("message length", msg_tlen, <, + sizeof(struct olsr_hello)); ptr.hello = (const struct olsr_hello *)msg_data; ND_PRINT("\n\t hello-time %.3fs, MPR willingness %u", - ME_TO_DOUBLE(EXTRACT_U_1(ptr.hello->htime)), - EXTRACT_U_1(ptr.hello->will)); + 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); @@ -451,9 +432,9 @@ olsr_print(netdissect_options *ndo, ptr.hello_link = (const struct olsr_hello_link *)msg_data; - hello_len = EXTRACT_BE_U_2(ptr.hello_link->len); - link_type = OLSR_EXTRACT_LINK_TYPE(EXTRACT_U_1(ptr.hello_link->link_code)); - neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(EXTRACT_U_1(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))) @@ -474,15 +455,12 @@ olsr_print(netdissect_options *ndo, 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; + olsr_print_neighbor(ndo, msg_data, hello_len); } else { if (is_ipv6) { - if (olsr_print_lq_neighbor6(ndo, msg_data, hello_len) == -1) - goto trunc; + olsr_print_lq_neighbor6(ndo, msg_data, hello_len); } else { - if (olsr_print_lq_neighbor4(ndo, msg_data, hello_len) == -1) - goto trunc; + olsr_print_lq_neighbor4(ndo, msg_data, hello_len); } } @@ -493,42 +471,39 @@ olsr_print(netdissect_options *ndo, case OLSR_TC_MSG: case OLSR_TC_LQ_MSG: - if (msg_tlen < sizeof(struct olsr_tc)) - goto trunc; + ND_ICHECKMSG_ZU("message length", msg_tlen, <, + sizeof(struct olsr_tc)); ND_TCHECK_LEN(msg_data, sizeof(struct olsr_tc)); ptr.tc = (const struct olsr_tc *)msg_data; ND_PRINT("\n\t advertised neighbor seq 0x%04x", - EXTRACT_BE_U_2(ptr.tc->ans_seq)); + GET_BE_U_2(ptr.tc->ans_seq)); msg_data += sizeof(struct olsr_tc); msg_tlen -= sizeof(struct olsr_tc); if (msg_type == OLSR_TC_MSG) { - if (olsr_print_neighbor(ndo, msg_data, msg_tlen) == -1) - goto trunc; + olsr_print_neighbor(ndo, msg_data, msg_tlen); } else { if (is_ipv6) { - if (olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen) == -1) - goto trunc; + olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen); } else { - if (olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen) == -1) - goto trunc; + olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen); } } break; case OLSR_MID_MSG: { - size_t addr_size = sizeof(nd_ipv4); + u_int addr_size = (u_int)sizeof(nd_ipv4); if (is_ipv6) - addr_size = sizeof(nd_ipv6); + addr_size = (u_int)sizeof(nd_ipv6); while (msg_tlen >= addr_size) { ND_TCHECK_LEN(msg_data, addr_size); ND_PRINT("\n\t interface address %s", - is_ipv6 ? ip6addr_string(ndo, msg_data) : - ipaddr_string(ndo, msg_data)); + is_ipv6 ? GET_IP6ADDR_STRING(msg_data) : + GET_IPADDR_STRING(msg_data)); msg_data += addr_size; msg_tlen -= addr_size; @@ -537,8 +512,7 @@ olsr_print(netdissect_options *ndo, } case OLSR_HNA_MSG: - if (is_ipv6) - { + if (is_ipv6) { int i = 0; ND_PRINT("\n\t Advertised networks (total %u)", @@ -552,15 +526,13 @@ olsr_print(netdissect_options *ndo, hna6 = (const struct olsr_hna6 *)msg_data; ND_PRINT("\n\t #%i: %s/%u", - i, ip6addr_string(ndo, hna6->network), + i, GET_IP6ADDR_STRING(hna6->network), mask62plen (hna6->mask)); msg_data += sizeof(struct olsr_hna6); msg_tlen -= sizeof(struct olsr_hna6); } - } - else - { + } else { int col = 0; ND_PRINT("\n\t Advertised networks (total %u)", @@ -608,8 +580,8 @@ olsr_print(netdissect_options *ndo, /* normal route */ ND_PRINT("%s%s/%u", col == 0 ? "\n\t " : ", ", - ipaddr_string(ndo, ptr.hna->network), - mask2plen(EXTRACT_BE_U_4(ptr.hna->mask))); + GET_IPADDR_STRING(ptr.hna->network), + mask2plen(GET_BE_U_4(ptr.hna->mask))); } msg_data += sizeof(struct olsr_hna4); @@ -627,11 +599,9 @@ olsr_print(netdissect_options *ndo, int name_entries_valid; u_int i; - if (msg_tlen < 4) - goto trunc; - ND_TCHECK_4(msg_data); + ND_ICHECKMSG_U("message length", msg_tlen, <, 4); - name_entries = EXTRACT_BE_U_2(msg_data + 2); + name_entries = GET_BE_U_2(msg_data + 2); addr_size = 4; if (is_ipv6) addr_size = 16; @@ -642,7 +612,7 @@ olsr_print(netdissect_options *ndo, name_entries_valid = 1; ND_PRINT("\n\t Version %u, Entries %u%s", - EXTRACT_BE_U_2(msg_data), + GET_BE_U_2(msg_data), name_entries, (name_entries_valid == 0) ? " (invalid)" : ""); if (name_entries_valid == 0) @@ -656,10 +626,9 @@ olsr_print(netdissect_options *ndo, if (msg_tlen < 4) break; - ND_TCHECK_4(msg_data); - name_entry_type = EXTRACT_BE_U_2(msg_data); - name_entry_len = EXTRACT_BE_U_2(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; @@ -679,19 +648,19 @@ olsr_print(netdissect_options *ndo, if (name_entry_len%4 != 0) name_entry_padding = 4-(name_entry_len%4); - if (msg_tlen < addr_size + name_entry_len + name_entry_padding) - goto trunc; + ND_ICHECKMSG_U("name entry length", msg_tlen, <, + addr_size + name_entry_len + name_entry_padding); ND_TCHECK_LEN(msg_data, addr_size + name_entry_len + name_entry_padding); if (is_ipv6) ND_PRINT(", address %s, name \"", - ip6addr_string(ndo, msg_data)); + GET_IP6ADDR_STRING(msg_data)); else ND_PRINT(", address %s, name \"", - ipaddr_string(ndo, msg_data)); - (void)nd_printn(ndo, msg_data + addr_size, name_entry_len, NULL); + GET_IPADDR_STRING(msg_data)); + nd_printjn(ndo, msg_data + addr_size, name_entry_len); ND_PRINT("\""); msg_data += addr_size + name_entry_len + name_entry_padding; @@ -714,6 +683,6 @@ olsr_print(netdissect_options *ndo, return; - trunc: - nd_print_trunc(ndo); +invalid: + nd_print_invalid(ndo); }