X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/83046fe18342b3874e5e66db69af15b437c7a879..a5eca2cbbfa991c0ae26d0b039bf303fa92734ac:/print-tcp.c diff --git a/print-tcp.c b/print-tcp.c index 0199ce07..a7b60b8e 100644 --- a/print-tcp.c +++ b/print-tcp.c @@ -31,10 +31,10 @@ __RCSID("$NetBSD: print-tcp.c,v 1.8 2007/07/24 11:53:48 drochner Exp $"); #endif #ifdef HAVE_CONFIG_H -#include "config.h" +#include #endif -#include +#include "netdissect-stdinc.h" #include #include @@ -57,7 +57,7 @@ __RCSID("$NetBSD: print-tcp.c,v 1.8 2007/07/24 11:53:48 drochner Exp $"); static int tcp_verify_signature(netdissect_options *ndo, const struct ip *ip, const struct tcphdr *tp, - const u_char *data, int length, const u_char *rcvsig); + const u_char *data, u_int length, const u_char *rcvsig); #endif static void print_tcp_rst_data(netdissect_options *, const u_char *sp, u_int length); @@ -173,6 +173,7 @@ tcp_print(netdissect_options *ndo, int rev; const struct ip6_hdr *ip6; + ndo->ndo_protocol = "tcp"; tp = (const struct tcphdr *)bp; ip = (const struct ip *)bp2; if (IP_V(ip) == 6) @@ -180,10 +181,17 @@ tcp_print(netdissect_options *ndo, else ip6 = NULL; ch = '\0'; - if (!ND_TTEST(tp->th_dport)) { - ND_PRINT("%s > %s: [|tcp]", - ipaddr_string(ndo, &ip->ip_src), - ipaddr_string(ndo, &ip->ip_dst)); + if (!ND_TTEST_2(tp->th_dport)) { + if (ip6) { + ND_PRINT("%s > %s:", + ip6addr_string(ndo, ip6->ip6_src), + ip6addr_string(ndo, ip6->ip6_dst)); + } else { + ND_PRINT("%s > %s:", + ipaddr_string(ndo, ip->ip_src), + ipaddr_string(ndo, ip->ip_dst)); + } + nd_print_trunc(ndo); return; } @@ -193,9 +201,9 @@ tcp_print(netdissect_options *ndo, if (ip6) { if (EXTRACT_U_1(ip6->ip6_nxt) == IPPROTO_TCP) { ND_PRINT("%s.%s > %s.%s: ", - ip6addr_string(ndo, &ip6->ip6_src), + ip6addr_string(ndo, ip6->ip6_src), tcpport_string(ndo, sport), - ip6addr_string(ndo, &ip6->ip6_dst), + ip6addr_string(ndo, ip6->ip6_dst), tcpport_string(ndo, dport)); } else { ND_PRINT("%s > %s: ", @@ -204,9 +212,9 @@ tcp_print(netdissect_options *ndo, } else { if (EXTRACT_U_1(ip->ip_p) == IPPROTO_TCP) { ND_PRINT("%s.%s > %s.%s: ", - ipaddr_string(ndo, &ip->ip_src), + ipaddr_string(ndo, ip->ip_src), tcpport_string(ndo, sport), - ipaddr_string(ndo, &ip->ip_dst), + ipaddr_string(ndo, ip->ip_dst), tcpport_string(ndo, dport)); } else { ND_PRINT("%s > %s: ", @@ -219,7 +227,7 @@ tcp_print(netdissect_options *ndo, hlen = TH_OFF(tp) * 4; if (hlen < sizeof(*tp)) { - ND_PRINT(" tcp %d [bad hdr length %u - too short, < %lu]", + ND_PRINT(" tcp %u [bad hdr length %u - too short, < %lu]", length - hlen, hlen, (unsigned long)sizeof(*tp)); return; } @@ -230,7 +238,7 @@ tcp_print(netdissect_options *ndo, urp = EXTRACT_BE_U_2(tp->th_urp); if (ndo->ndo_qflag) { - ND_PRINT("tcp %d", length - hlen); + ND_PRINT("tcp %u", length - hlen); if (hlen > length) { ND_PRINT(" [bad hdr length %u - too long, > %u]", hlen, length); @@ -256,22 +264,22 @@ tcp_print(netdissect_options *ndo, struct tha6 tha; tcp_seq_hash = tcp_seq_hash6; - src = (const void *)&ip6->ip6_src; - dst = (const void *)&ip6->ip6_dst; + src = (const void *)ip6->ip6_src; + dst = (const void *)ip6->ip6_dst; if (sport > dport) rev = 1; else if (sport == dport) { - if (UNALIGNED_MEMCMP(src, dst, sizeof ip6->ip6_dst) > 0) + if (UNALIGNED_MEMCMP(src, dst, sizeof(ip6->ip6_dst)) > 0) rev = 1; } if (rev) { - UNALIGNED_MEMCPY(&tha.src, dst, sizeof ip6->ip6_dst); - UNALIGNED_MEMCPY(&tha.dst, src, sizeof ip6->ip6_src); - tha.port = dport << 16 | sport; + UNALIGNED_MEMCPY(&tha.src, dst, sizeof(ip6->ip6_dst)); + UNALIGNED_MEMCPY(&tha.dst, src, sizeof(ip6->ip6_src)); + tha.port = ((u_int)dport) << 16 | sport; } else { - UNALIGNED_MEMCPY(&tha.dst, dst, sizeof ip6->ip6_dst); - UNALIGNED_MEMCPY(&tha.src, src, sizeof ip6->ip6_src); - tha.port = sport << 16 | dport; + UNALIGNED_MEMCPY(&tha.dst, dst, sizeof(ip6->ip6_dst)); + UNALIGNED_MEMCPY(&tha.src, src, sizeof(ip6->ip6_src)); + tha.port = ((u_int)sport) << 16 | dport; } for (th = &tcp_seq_hash[tha.port % TSEQ_HASHSIZE]; @@ -282,12 +290,15 @@ tcp_print(netdissect_options *ndo, if (!th->nxt || (flags & TH_SYN)) { /* didn't find it or new conversation */ + /* calloc() return used by the 'tcp_seq_hash6' + hash table: do not free() */ if (th->nxt == NULL) { th->nxt = (struct tcp_seq_hash6 *) calloc(1, sizeof(*th)); if (th->nxt == NULL) (*ndo->ndo_error)(ndo, - "tcp_print: calloc"); + S_ERR_ND_MEM_ALLOC, + "tcp_print: calloc"); } th->addr = tha; if (rev) @@ -312,17 +323,21 @@ tcp_print(netdissect_options *ndo, if (sport > dport) rev = 1; else if (sport == dport) { - if (UNALIGNED_MEMCMP(&ip->ip_src, &ip->ip_dst, sizeof ip->ip_dst) > 0) + if (UNALIGNED_MEMCMP(ip->ip_src, ip->ip_dst, sizeof(ip->ip_dst)) > 0) rev = 1; } if (rev) { - UNALIGNED_MEMCPY(&tha.src, &ip->ip_dst, sizeof ip->ip_dst); - UNALIGNED_MEMCPY(&tha.dst, &ip->ip_src, sizeof ip->ip_src); - tha.port = dport << 16 | sport; + UNALIGNED_MEMCPY(&tha.src, ip->ip_dst, + sizeof(ip->ip_dst)); + UNALIGNED_MEMCPY(&tha.dst, ip->ip_src, + sizeof(ip->ip_src)); + tha.port = ((u_int)dport) << 16 | sport; } else { - UNALIGNED_MEMCPY(&tha.dst, &ip->ip_dst, sizeof ip->ip_dst); - UNALIGNED_MEMCPY(&tha.src, &ip->ip_src, sizeof ip->ip_src); - tha.port = sport << 16 | dport; + UNALIGNED_MEMCPY(&tha.dst, ip->ip_dst, + sizeof(ip->ip_dst)); + UNALIGNED_MEMCPY(&tha.src, ip->ip_src, + sizeof(ip->ip_src)); + tha.port = ((u_int)sport) << 16 | dport; } for (th = &tcp_seq_hash[tha.port % TSEQ_HASHSIZE]; @@ -333,12 +348,15 @@ tcp_print(netdissect_options *ndo, if (!th->nxt || (flags & TH_SYN)) { /* didn't find it or new conversation */ + /* calloc() return used by the 'tcp_seq_hash4' + hash table: do not free() */ if (th->nxt == NULL) { th->nxt = (struct tcp_seq_hash *) calloc(1, sizeof(*th)); if (th->nxt == NULL) (*ndo->ndo_error)(ndo, - "tcp_print: calloc"); + S_ERR_ND_MEM_ALLOC, + "tcp_print: calloc"); } th->addr = tha; if (rev) @@ -410,10 +428,10 @@ tcp_print(netdissect_options *ndo, ND_PRINT(", ack %u", ack); } - ND_PRINT(", win %d", win); + ND_PRINT(", win %u", win); if (flags & TH_URG) - ND_PRINT(", urg %d", urp); + ND_PRINT(", urg %u", urp); /* * Handle any options. */ @@ -471,7 +489,7 @@ tcp_print(netdissect_options *ndo, } else { uint32_t s, e; - ND_PRINT(" %d ", datalen / 8); + ND_PRINT(" %u ", datalen / 8); for (i = 0; i < datalen; i += 8) { LENCHECK(i + 4); s = EXTRACT_BE_U_4(cp + i); @@ -647,7 +665,7 @@ tcp_print(netdissect_options *ndo, if (!ZEROLENOPT(opt)) ++datalen; /* size octet */ if (datalen != len) - ND_PRINT("[len %d]", len); + ND_PRINT("[len %u]", len); ch = ','; if (opt == TCPOPT_EOL) break; @@ -719,6 +737,12 @@ tcp_print(netdissect_options *ndo, rtsp_print(ndo, bp, length); } else if (length > 2 && (IS_SRC_OR_DST_PORT(NAMESERVER_PORT))) { + /* domain_print() assumes it does not have to prepend a space before its + * own output to separate it from the output of the calling function. This + * works well with udp_print(), but requires a small prop here. + */ + ND_PRINT(" "); + /* * TCP DNS query has 2byte length at the head. * XXX packet could be unaligned, it can go strange @@ -748,7 +772,7 @@ tcp_print(netdissect_options *ndo, if (fraglen > (length) - 4) fraglen = (length) - 4; rp = (const struct sunrpc_msg *)(bp + 4); - if (ND_TTEST(rp->rm_direction)) { + if (ND_TTEST_4(rp->rm_direction)) { direction = (enum sunrpc_msg_type) EXTRACT_BE_U_4(rp->rm_direction); if (dport == NFS_PORT && direction == SUNRPC_CALL) { ND_PRINT(": NFS request xid %u ", @@ -769,10 +793,10 @@ tcp_print(netdissect_options *ndo, bad: ND_PRINT("[bad opt]"); if (ch != '\0') - ND_PRINT(">"); + ND_PRINT("]"); return; trunc: - ND_PRINT("[|tcp]"); + nd_print_trunc(ndo); if (ch != '\0') ND_PRINT(">"); } @@ -807,7 +831,7 @@ print_tcp_rst_data(netdissect_options *ndo, while (length-- && sp < ndo->ndo_snapend) { c = EXTRACT_U_1(sp); sp++; - safeputchar(ndo, c); + fn_print_char(ndo, c); } ND_PRINT("]"); } @@ -841,7 +865,7 @@ USES_APPLE_DEPRECATED_API static int tcp_verify_signature(netdissect_options *ndo, const struct ip *ip, const struct tcphdr *tp, - const u_char *data, int length, const u_char *rcvsig) + const u_char *data, u_int length, const u_char *rcvsig) { struct tcphdr tp1; u_char sig[TCP_SIGLEN]; @@ -919,10 +943,3 @@ tcp_verify_signature(netdissect_options *ndo, } USES_APPLE_RST #endif /* HAVE_LIBCRYPTO */ - -/* - * Local Variables: - * c-style: whitesmith - * c-basic-offset: 8 - * End: - */