diff options
| author | David Gwynne <dlg@cvs.openbsd.org> | 2018-02-06 03:41:59 +0000 |
|---|---|---|
| committer | David Gwynne <dlg@cvs.openbsd.org> | 2018-02-06 03:41:59 +0000 |
| commit | 56b50f87416aff71d1e49d26311635b2b0941d72 (patch) | |
| tree | 8179504ae7e6332a10539957258f03b72948a730 | |
| parent | 9ca1f757049878277b23a9eaff11ffe53cc03736 (diff) | |
output the data part of LCP Echo-Request and Echo-Reply packets.
| -rw-r--r-- | usr.sbin/tcpdump/print-ppp.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/usr.sbin/tcpdump/print-ppp.c b/usr.sbin/tcpdump/print-ppp.c index 40692371440..ec13ff496eb 100644 --- a/usr.sbin/tcpdump/print-ppp.c +++ b/usr.sbin/tcpdump/print-ppp.c @@ -1,4 +1,4 @@ -/* $OpenBSD: print-ppp.c,v 1.31 2018/02/06 03:07:51 dlg Exp $ */ +/* $OpenBSD: print-ppp.c,v 1.32 2018/02/06 03:41:58 dlg Exp $ */ /* * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997 @@ -441,6 +441,7 @@ static void handle_lcp(const u_char *p, int l) { struct ppp_control pc; + int i; if (ppp_cp_header(&pc, p, l, &ppp_cp_lcp) == -1) goto trunc; @@ -474,6 +475,23 @@ handle_lcp(const u_char *p, int l) if (l < 4) goto trunc; printf(" Magic-Number=%u", EXTRACT_32BITS(p)); + p += 4; + l -= 4; + + i = sizeof(pc) + 4; + if (i == pc.len) + break; + + printf(" Data="); + do { + if (l == 0) + goto trunc; + + printf("%02x", *p); + + p++; + l--; + } while (++i < pc.len); break; case LCP_TERM_REQ: case LCP_TERM_ACK: |