diff options
| author | Terry Dawson VK2KTJ <terry@animats.net> | 2001-09-12 13:18:43 +0000 |
|---|---|---|
| committer | Terry Dawson VK2KTJ <terry@animats.net> | 2001-09-12 13:18:43 +0000 |
| commit | 0eb707fdcf1b87e71bb3a9eaa8472d0b05799a3d (patch) | |
| tree | b2db8371470b697e3ae8a19b1e78c7805046f2d2 /listen/tcpdump.c | |
| parent | 628edceba5f1485ef7c4ef30fba93b4c0c0dd955 (diff) | |
updated libtool, uniformly indented source, corrected small ax25mond Makefile bug
Diffstat (limited to 'listen/tcpdump.c')
| -rw-r--r-- | listen/tcpdump.c | 54 |
1 files changed, 32 insertions, 22 deletions
diff --git a/listen/tcpdump.c b/listen/tcpdump.c index 3a9520f..23c9686 100644 --- a/listen/tcpdump.c +++ b/listen/tcpdump.c @@ -1,4 +1,4 @@ -/* @(#) $Header: /home/ax25-cvs/ax25-apps/listen/tcpdump.c,v 1.1 2001/04/10 01:58:56 csmall Exp $ */ +/* @(#) $Header: /home/ax25-cvs/ax25-apps/listen/tcpdump.c,v 1.2 2001/09/12 13:18:44 terry Exp $ */ /* TCP header tracing routines * Copyright 1991 Phil Karn, KA9Q @@ -38,37 +38,46 @@ void tcp_dump(unsigned char *data, int length, int hexdump) int mss = 0; source = get16(data + 0); - dest = get16(data + 2); - seq = get32(data + 4); - ack = get32(data + 8); + dest = get16(data + 2); + seq = get32(data + 4); + ack = get32(data + 8); hdrlen = (data[12] & 0xF0) >> 2; - flags = data[13]; - wnd = get16(data + 14); - up = get16(data + 18); + flags = data[13]; + wnd = get16(data + 14); + up = get16(data + 18); lprintf(T_PROTOCOL, "TCP:"); lprintf(T_TCPHDR, " %s->", servname(source, "tcp")); lprintf(T_TCPHDR, "%s Seq x%x", servname(dest, "tcp"), seq); - if (flags & ACK) lprintf(T_TCPHDR, " Ack x%x", ack); + if (flags & ACK) + lprintf(T_TCPHDR, " Ack x%x", ack); - if (flags & CE) lprintf(T_TCPHDR, " CE"); + if (flags & CE) + lprintf(T_TCPHDR, " CE"); - if (flags & URG) lprintf(T_TCPHDR, " URG"); + if (flags & URG) + lprintf(T_TCPHDR, " URG"); - if (flags & ACK) lprintf(T_TCPHDR, " ACK"); + if (flags & ACK) + lprintf(T_TCPHDR, " ACK"); - if (flags & PSH) lprintf(T_TCPHDR, " PSH"); + if (flags & PSH) + lprintf(T_TCPHDR, " PSH"); - if (flags & RST) lprintf(T_TCPHDR, " RST"); + if (flags & RST) + lprintf(T_TCPHDR, " RST"); - if (flags & SYN) lprintf(T_TCPHDR, " SYN"); + if (flags & SYN) + lprintf(T_TCPHDR, " SYN"); - if (flags & FIN) lprintf(T_TCPHDR, " FIN"); + if (flags & FIN) + lprintf(T_TCPHDR, " FIN"); lprintf(T_TCPHDR, " Wnd %d", wnd); - if (flags & URG) lprintf(T_TCPHDR, " UP x%x", up); + if (flags & URG) + lprintf(T_TCPHDR, " UP x%x", up); /* Process options, if any */ if (hdrlen > TCPLEN && length >= hdrlen) { @@ -95,29 +104,30 @@ void tcp_dump(unsigned char *data, int length, int hexdump) optlen = *cp++; /* Process valid multi-byte options */ - switch (kind) { + switch (kind) { case MSS_KIND: - if (optlen == MSS_LENGTH) + if (optlen == MSS_LENGTH) mss = get16(cp); break; } - optlen = max(2, optlen); /* Enforce legal minimum */ + optlen = max(2, optlen); /* Enforce legal minimum */ i -= optlen; cp += optlen - 2; } } - if (mss != 0) lprintf(T_TCPHDR," MSS %d", mss); + if (mss != 0) + lprintf(T_TCPHDR, " MSS %d", mss); length -= hdrlen; - data += hdrlen; + data += hdrlen; if (length > 0) { lprintf(T_TCPHDR, " Data %d\n", length); data_dump(data, length, hexdump); return; } - + lprintf(T_TCPHDR, "\n"); } |