X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/07a7f33ba3ff346b9ce31772645a06980baca907..c39d40a767a1ae36171e5bcbf6f157ff3e80fb6c:/print-olsr.c?ds=sidebyside diff --git a/print-olsr.c b/print-olsr.c index a8ab62f2..df796d95 100644 --- a/print-olsr.c +++ b/print-olsr.c @@ -27,6 +27,7 @@ #include "netdissect-stdinc.h" +#define ND_LONGJMP_FROM_TCHECK #include "netdissect.h" #include "addrtoname.h" #include "extract.h" @@ -231,7 +232,7 @@ 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 +245,16 @@ 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), + 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 +267,19 @@ 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), + 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 +289,13 @@ 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; } @@ -333,17 +322,15 @@ 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_LCHECKMSG_ZU(length, sizeof(struct olsr_common), "packet length"); ptr.common = (const struct olsr_common *)tptr; - length = min(length, GET_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, + ND_PRINT(", seq 0x%04x, length %u", GET_BE_U_2(ptr.common->packet_seq), length); @@ -382,7 +369,7 @@ 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), + 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)), @@ -413,7 +400,7 @@ 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), + 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)), @@ -430,9 +417,7 @@ 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_LCHECKMSG_ZU(msg_tlen, sizeof(struct olsr_hello), "message length"); ptr.hello = (const struct olsr_hello *)msg_data; ND_PRINT("\n\t hello-time %.3fs, MPR willingness %u", @@ -474,15 +459,12 @@ 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); } } @@ -493,8 +475,7 @@ olsr_print(netdissect_options *ndo, case OLSR_TC_MSG: case OLSR_TC_LQ_MSG: - if (msg_tlen < sizeof(struct olsr_tc)) - goto trunc; + ND_LCHECKMSG_ZU(msg_tlen, sizeof(struct olsr_tc), "message length"); ND_TCHECK_LEN(msg_data, sizeof(struct olsr_tc)); ptr.tc = (const struct olsr_tc *)msg_data; @@ -504,15 +485,12 @@ olsr_print(netdissect_options *ndo, 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; @@ -527,8 +505,8 @@ olsr_print(netdissect_options *ndo, 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; @@ -552,7 +530,7 @@ 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); @@ -608,7 +586,7 @@ olsr_print(netdissect_options *ndo, /* normal route */ ND_PRINT("%s%s/%u", col == 0 ? "\n\t " : ", ", - ipaddr_string(ndo, ptr.hna->network), + GET_IPADDR_STRING(ptr.hna->network), mask2plen(GET_BE_U_4(ptr.hna->mask))); } @@ -627,9 +605,7 @@ olsr_print(netdissect_options *ndo, int name_entries_valid; u_int i; - if (msg_tlen < 4) - goto trunc; - ND_TCHECK_4(msg_data); + ND_LCHECKMSG_U(msg_tlen, 4, "message length"); name_entries = GET_BE_U_2(msg_data + 2); addr_size = 4; @@ -656,7 +632,6 @@ olsr_print(netdissect_options *ndo, if (msg_tlen < 4) break; - ND_TCHECK_4(msg_data); name_entry_type = GET_BE_U_2(msg_data); name_entry_len = GET_BE_U_2(msg_data + 2); @@ -679,19 +654,19 @@ 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_LCHECKMSG_U(msg_tlen, addr_size + name_entry_len + name_entry_padding, + "name entry length"); 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 +689,6 @@ olsr_print(netdissect_options *ndo, return; - trunc: - nd_print_trunc(ndo); +invalid: + nd_print_invalid(ndo); }