summaryrefslogtreecommitdiffstats
path: root/contrib/tcpdump/print-chdlc.c
diff options
context:
space:
mode:
authorfenner <fenner@FreeBSD.org>2000-01-30 00:45:58 +0000
committerfenner <fenner@FreeBSD.org>2000-01-30 00:45:58 +0000
commit54c4a9c9f2aca2e032cbf41f5eb012e2e9628dd4 (patch)
treed25e1fd8c818bfce397a4c7e3f2c66229c814b2a /contrib/tcpdump/print-chdlc.c
parent0c669098d078c88cf703bade2263846b39e01d83 (diff)
downloadFreeBSD-src-54c4a9c9f2aca2e032cbf41f5eb012e2e9628dd4.zip
FreeBSD-src-54c4a9c9f2aca2e032cbf41f5eb012e2e9628dd4.tar.gz
Virgin import of tcpdump.org tcpdump v3.5
Diffstat (limited to 'contrib/tcpdump/print-chdlc.c')
-rw-r--r--contrib/tcpdump/print-chdlc.c196
1 files changed, 196 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-chdlc.c b/contrib/tcpdump/print-chdlc.c
new file mode 100644
index 0000000..f9c5ecf
--- /dev/null
+++ b/contrib/tcpdump/print-chdlc.c
@@ -0,0 +1,196 @@
+/* maybe it should be merged into print-ppp.c */
+/*
+ * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+ "@(#) $Header: /tcpdump/master/tcpdump/print-chdlc.c,v 1.2 1999/11/21 09:36:49 fenner Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+
+#if __STDC__
+struct mbuf;
+struct rtentry;
+#endif
+#include <net/if.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/if_ether.h>
+
+#include <ctype.h>
+#include <netdb.h>
+#include <pcap.h>
+#include <stdio.h>
+#ifdef __bsdi__
+#include <net/slcompress.h>
+#include <net/if_ppp.h>
+#endif
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "ppp.h"
+
+/* XXX This goes somewhere else. */
+#define CHDLC_HDRLEN 4
+#define CHDLC_UNICAST 0x0f
+#define CHDLC_BCAST 0x8f
+#define CHDLC_TYPE_SLARP 0x8035
+#define CHDLC_TYPE_CDP 0x2000
+
+static void chdlc_slarp_print(const u_char *, u_int);
+
+/* Standard CHDLC printer */
+void
+chdlc_if_print(u_char *user, const struct pcap_pkthdr *h,
+ register const u_char *p)
+{
+ register u_int length = h->len;
+ register u_int caplen = h->caplen;
+ const struct ip *ip;
+ u_int proto;
+
+ ts_print(&h->ts);
+
+ if (caplen < CHDLC_HDRLEN) {
+ printf("[|chdlc]");
+ goto out;
+ }
+
+ /*
+ * Some printers want to get back at the link level addresses,
+ * and/or check that they're not walking off the end of the packet.
+ * Rather than pass them all the way down, we set these globals.
+ */
+ proto = ntohs(*(u_short *)&p[2]);
+ packetp = p;
+ snapend = p + caplen;
+
+ if (eflag) {
+ switch (p[0]) {
+ case CHDLC_UNICAST:
+ printf("unicast ");
+ break;
+ case CHDLC_BCAST:
+ printf("bcast ");
+ break;
+ default:
+ printf("0x%02x ", p[0]);
+ break;
+ }
+ printf("%d %04x: ", length, proto);
+ }
+
+ length -= CHDLC_HDRLEN;
+ ip = (struct ip *)(p + CHDLC_HDRLEN);
+ switch(proto) {
+ case ETHERTYPE_IP:
+ ip_print((const u_char *)ip, length);
+ break;
+#ifdef INET6
+ case ETHERTYPE_IPV6:
+ ip6_print((const u_char *)ip, length);
+ break;
+#endif
+ case CHDLC_TYPE_SLARP:
+ chdlc_slarp_print((const u_char *)ip, length);
+ break;
+#if 0
+ case CHDLC_TYPE_CDP:
+ chdlc_cdp_print((const u_char *)ip, length);
+ break;
+#endif
+ }
+ if (xflag)
+ default_print((const u_char *)ip, caplen - CHDLC_HDRLEN);
+out:
+ putchar('\n');
+}
+
+struct cisco_slarp {
+ long code;
+#define SLARP_REQUEST 0
+#define SLARP_REPLY 1
+#define SLARP_KEEPALIVE 2
+ union {
+ struct {
+ struct in_addr addr;
+ struct in_addr mask;
+ u_short unused[3];
+ } addr;
+ struct {
+ long myseq;
+ long yourseq;
+ short rel;
+ short t1;
+ short t2;
+ } keep;
+ } un;
+};
+
+#define SLARP_LEN 18
+
+static void
+chdlc_slarp_print(const u_char *cp, u_int length)
+{
+ struct cisco_slarp *slarp;
+
+ if (length < SLARP_LEN) {
+ printf("[|slarp]");
+ return;
+ }
+
+ slarp = (struct cisco_slarp *)cp;
+ switch (ntohl(slarp->code)) {
+ case SLARP_REQUEST:
+ printf("slarp-request");
+ break;
+ case SLARP_REPLY:
+ printf("slarp-reply %s/%s",
+ ipaddr_string(&slarp->un.addr.addr),
+ ipaddr_string(&slarp->un.addr.mask));
+ break;
+ case SLARP_KEEPALIVE:
+ printf("slarp-keepalive my=0x%x your=0x%x ",
+ (u_int32_t)ntohl(slarp->un.keep.myseq),
+ (u_int32_t)ntohl(slarp->un.keep.yourseq));
+ printf("reliability=0x%04x t1=%d.%d",
+ ntohs(slarp->un.keep.rel), ntohs(slarp->un.keep.t1),
+ ntohs(slarp->un.keep.t2));
+ break;
+ default:
+ printf("slarp-0x%x unknown", (u_int32_t)ntohl(slarp->code));
+ break;
+ }
+
+ if (SLARP_LEN < length && vflag)
+ printf("(trailing junk: %d bytes)", length - SLARP_LEN);
+}
OpenPOWER on IntegriCloud