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Update IGMP printing, removing the obsolete packet header version number &

Browse source 
changing "new" and "old" to "v2" and "v1" to allow for future changes not
having to be "newer new"

Recognize Router Alert IP option
This commit is contained in:
Bill Fenner 1996-03-19 17:25:12 +00:00
parent 94ed0b7b90
commit fd732d376e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=14718
1 changed files with 42 additions and 28 deletions
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70
usr.sbin/tcpdump/tcpdump/print-ip.c
View file

@ -22,7 +22,7 @@
#ifndef lint
/* From: Header: print-ip.c,v 1.28 92/05/25 14:29:02 mccanne Exp $ (LBL) */
static char rcsid[] =
"$Id: /a/ncvs/src/usr.sbin/tcpdump/tcpdump/print-ip.c,v 1.4 1995/03/08 12:52:33 olah Exp $";
"$Id: print-ip.c,v 1.5 1995/06/13 17:39:23 wollman Exp $";
#endif
#include <sys/param.h>
@ -65,40 +65,46 @@ igmp_print(register const u_char *bp, register int len,
(void)printf("[|igmp]");
return;
}
switch (bp[0] & 0xf) {
case 1:
(void)printf("igmp %squery", bp[1] ? "new " : "");
if (bp[1] != 100)
printf(" [intvl %d]", bp[1]);
switch (bp[0]) {
case 0x11:
(void)printf("igmp %s query", bp[1] ? "v2" : "v1");
if (bp[1] && bp[1] != 100)
(void)printf(" [intvl %d]", bp[1]);
if (*(int *)&bp[4])
(void)printf(" [gaddr %s]", ipaddr_string(&bp[4]));
if (len != 8)
(void)printf(" [len %d]", len);
break;
case 2:
case 6:
(void)printf("igmp %sreport %s",
(bp[0] & 0xf) == 6 ? "new " : "",
case 0x12:
case 0x16:
(void)printf("igmp %s report %s",
(bp[0] & 0xf) == 6 ? "v2" : "v1",
ipaddr_string(&bp[4]));
if (len != 8)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
case 7:
case 0x17:
(void)printf("igmp leave %s", ipaddr_string(&bp[4]));
if (len != 8)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
case 3:
case 0x13:
(void)printf("igmp dvmrp");
switch(bp[1]) {
case 1:
printf(" probe");
if (len < 8)
(void)printf(" [len %d]", len);
if (vflag) {
if (len > 8)
(void)printf(" genid 0x%08x",
ntohl(*(int *)&bp[8]));
(void)printf(" [nf 0x%02x]", bp[5]);
}
if (len > 12) {
int i;
for (i = 12; i + 3 < len; i += 4) {
@ -109,6 +115,8 @@ igmp_print(register const u_char *bp, register int len,
break;
case 2:
printf(" report");
if (vflag)
(void)printf(" [nf 0x%02x]", bp[5]);
if (len < 8)
(void)printf(" [len %d]", len);
break;
@ -158,35 +166,33 @@ igmp_print(register const u_char *bp, register int len,
}
break;
case 4:
case 0x14:
printf("igmp pim %s", ipaddr_string(&bp[4]));
if (len < 8)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
case 15:
(void)printf("igmp mtrace %s", ipaddr_string(&bp[4]));
if (len < 8)
case 0x1e:
case 0x1f:
(void)printf("igmp mtrace%s %s",
(bp[0] == 0x1e) ? " response" : "",
ipaddr_string(&bp[4]));
if (len < 24)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
case 14:
(void)printf("igmp mtrace-resp %s", ipaddr_string(&bp[4]));
if (len < 8)
(void)printf(" [len %d]", len);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
else if (vflag) {
(void)printf(" s=%s", ipaddr_string(&bp[8]));
(void)printf(" d=%s", ipaddr_string(&bp[12]));
(void)printf(" qid=0x%06x",
bp[21] << 16 + bp[22] << 8 + bp[23]);
}
break;
default:
(void)printf("igmp-%d", bp[0] & 0xf);
(void)printf("igmp-%d", bp[0]);
if (bp[1])
(void)printf(" [b1=0x%x]", bp[1]);
break;
}
if ((bp[0] >> 4) != 1)
(void)printf(" [v%d]", bp[0] >> 4);
}
/*
@ -271,6 +277,14 @@ ip_optprint(register const u_char *cp, int length)
ip_printroute("LSRR", cp, len);
break;
case IPOPT_RA:
printf(" RA");
if (len != 4)
printf("{%d}", len);
if (cp[2] != 0 || cp[3] != 0)
printf("[b23=%04x]",cp[2] << 8 + cp[3]);
break;
default:
printf(" IPOPT-%d{%d}", cp[0], len);
break;