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The data in an Echo-Request, Echo-Reply, or Discard-Request packet are

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just uninterpreted data; calling it "Unknown Data" makes it sound as if
it's data that shouldn't be there or for which we don't have any code to
interpret it.  Just call it "Data".

The data in a Protocol-Reject packet is the rejected packet; label it as
such.

The data in an Identification packet is a message intended to be
human-readable; print it with "fn_printn()".
This commit is contained in:
guy 2005-06-18 23:55:24 +00:00
parent db34d9c99d
commit d16e94e848
1 changed files with 14 additions and 4 deletions
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18
print-ppp.c
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@ -31,7 +31,7 @@
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/tcpdump/print-ppp.c,v 1.111 2005-06-16 00:33:20 guy Exp $ (LBL)";
"@(#) $Header: /tcpdump/master/tcpdump/print-ppp.c,v 1.112 2005-06-18 23:55:24 guy Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
@ -518,24 +518,34 @@ handle_ctrl_proto(u_int proto, const u_char *pptr, int length)
EXTRACT_16BITS(tptr));
/* XXX: need to decode Rejected-Information? - hexdump for now */
if (len > 6) {
printf("\n\t Unknown Data");
printf("\n\t Rejected Packet");
print_unknown_data(tptr+2,"\n\t ",len-2);
}
break;
case CPCODES_ECHO_REQ:
case CPCODES_ECHO_RPL:
case CPCODES_DISC_REQ:
case CPCODES_ID:
if (length < 8)
break;
TCHECK2(*tptr, 4);
printf("\n\t Magic-Num 0x%08x", EXTRACT_32BITS(tptr));
/* XXX: need to decode Data? - hexdump for now */
if (len > 8) {
printf("\n\t Unknown Data");
printf("\n\t Data");
print_unknown_data(tptr+4,"\n\t ",len-4);
}
break;
case CPCODES_ID:
if (length < 8)
break;
TCHECK2(*tptr, 4);
printf("\n\t Magic-Num 0x%08x", EXTRACT_32BITS(tptr));
/* RFC 1661 says this is intended to be human readable */
if (len > 8) {
printf("\n\t Message\n\t ");
fn_printn(tptr+4,len-4,snapend);
}
break;
case CPCODES_TIME_REM:
if (length < 12)
break;