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de02b4585c
proto 94 (IPIP). I've been using this patch for a few weeks now for tracking down various "things" involving some IP tunnels between some Cisco 1720/2610 routers and several FreeBSD machines. Submitted by: Mike Nowlin <mike@argos.org>
167 lines
5.0 KiB
Plaintext
167 lines
5.0 KiB
Plaintext
--- tcpshow.c.orig Tue Mar 21 17:25:25 2000
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+++ tcpshow.c Tue Mar 21 17:28:04 2000
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@@ -367,7 +367,7 @@
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#endif
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-void main(int, char **);
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+int main(int, char **);
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static boolean noBflag = FALSE;
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@@ -1125,7 +1125,9 @@
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static char *icmpType (uint1 type) {
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char *descr;
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+ static char unknowntype[80];
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+ snprintf(unknowntype, 80, "%s (%d)", unknown, type);
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switch (type) {
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case ECHO_REPLY: descr = "echo-reply"; break;
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@@ -1143,7 +1145,7 @@
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case INFO_REPLY: descr = "information-reply"; break;
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case MASK_REQ: descr = "address-mask-request"; break;
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case MASK_REPLY: descr = "address-mask-reply"; break;
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- default: descr = unknown; break;
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+ default: descr = unknowntype; break;
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}
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return descr;
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@@ -1248,7 +1250,7 @@
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/* */
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/****==========------------------------------------------------==========****/
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-void main (int argc, char **argv) {
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+int main (int argc, char **argv) {
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/* Command line options. */
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while (--argc > 0 && **++argv == '-')
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@@ -1290,6 +1292,7 @@
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for ( ; ; ) if (!setjmp(jmpBuf)) showPkt(pkt);
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exit(0);
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+ return 0;
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}
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@@ -1336,7 +1339,7 @@
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name = number;
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}
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/* The crappy manpage doesn't say the port must be in net byte order. */
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- elif (service = getservbyport((int)htons(port), proto))
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+ elif ( (service = getservbyport((int)htons(port), proto)) )
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name = service->s_name;
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elif (!wantNumber)
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name = unknown;
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@@ -1580,13 +1583,14 @@
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if (ppFlag) {
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(void)sscanf(p, "%s", time);
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etherType = ETHER_PROTO_IP; /* tcpdump doesn't supply link type */
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- if (!noLinkFlag)
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+ if (!noLinkFlag) {
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if (terseFlag)
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printf("TIME:\t%s%s\n", time, deltaTime(&prevTime, time));
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else
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printf(
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"\tTimestamp:\t\t\t%s%s\n", time, deltaTime(&prevTime, time)
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);
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+ }
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return getPkt();
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}
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@@ -1598,7 +1602,7 @@
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(void)strcpy(eTo, etherAddr(eTo, 0));
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(void)strcpy(eToName, etherName(eTo, TRUE));
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- if (!noLinkFlag)
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+ if (!noLinkFlag) {
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if (terseFlag) {
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printf("TIME:\t%s%s\n", time, deltaTime(&prevTime, time));
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printf(
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@@ -1614,6 +1618,7 @@
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if (!noEtherNames) printf(" (%s)", etherName(eTo, FALSE));
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printf("\n\tEncapsulated Protocol:\t\t%s\n", etherProto(eType, 0));
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}
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+ }
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return getPkt();
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@@ -1778,7 +1783,7 @@
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static void showPkt (reg char *p) {
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char *warnMsg = "<*** No decode support for encapsulated protocol ***>";
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-
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+ char *warnMsg2 = "<*** No decode support for encap protocol in IPIP packet ***>";
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prSep();
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printf("Packet %d\n", ++nPktsShown);
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@@ -1807,6 +1812,31 @@
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p = showIcmp(p);
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p = showData(p);
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break;
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+
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+ // IPIP decode support by M. Nowlin (mike@argos.org) 20000321
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+ case IPIP:
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+ p = showIp(p);
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+ switch(proto) {
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+ case TCP:
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+ p = showTcp(p);
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+ p = showData(p);
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+ break;
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+ case UDP:
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+ p = showUdp(p);
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+ p = showData(p);
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+ break;
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+ case ICMP:
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+ p = showIcmp(p);
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+ p = showData(p);
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+ break;
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+ default:
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+ printf("\t%s\n", warnMsg2);
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+ nextPkt();
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+ break;
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+ }
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+
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+ break;
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+
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default:
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printf("\t%s\n", warnMsg);
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nextPkt(); /* Doesn't return */
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@@ -1826,7 +1856,7 @@
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}
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/* Note that if getPkt() returns here, then the line read isn't the */
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/* start of a new packet, i.e. there's spurious data. */
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- if (p = getPkt()) {
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+ if ( (p = getPkt()) ) {
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if (sFlag) printf("\t<*** Spurious data at end: \"%s\" ***>\n", p);
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nextPkt();
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}
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@@ -1996,10 +2026,10 @@
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if (terseFlag) {
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printf(
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- " TCP:\tport %s -> %s seq=%010lu", sPortName, dPortName, seq
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+ " TCP:\tport %s -> %s seq=%010lu", sPortName, dPortName, (u_long)seq
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);
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- if (trackFlag) printf(" (expect=%010lu)", expect);
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- printf(" ack=%010lu\n", ack);
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+ if (trackFlag) printf(" (expect=%010lu)", (u_long)expect);
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+ printf(" ack=%010lu\n", (u_long)ack);
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printf(
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"\thlen=%d (data=%u) UAPRSF=%s%s%s%s%s%s",
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hLen, dataLen,
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@@ -2016,9 +2046,9 @@
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if (!noPortNames) printf(" (%s)", portName(sPort, "tcp", FALSE));
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printf("\n\tDestination Port:\t\t%d", dPort);
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if (!noPortNames) printf(" (%s)", portName(dPort, "tcp", FALSE));
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- printf("\n\tSequence Number:\t\t%010lu\n", seq);
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- if (trackFlag) printf("\tExpect peer ACK:\t\t%010lu\n", expect);
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- printf("\tAcknowledgement Number:\t\t%010lu\n", ack);
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+ printf("\n\tSequence Number:\t\t%010lu\n", (u_long)seq);
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+ if (trackFlag) printf("\tExpect peer ACK:\t\t%010lu\n", (u_long)expect);
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+ printf("\tAcknowledgement Number:\t\t%010lu\n", (u_long)ack);
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printf("\tHeader Length:\t\t\t%d bytes (data=%u)\n", hLen, dataLen);
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printf(
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"\tFlags:%s%s%s%s%s%s\n%s%s%s%s%s%s\n",
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