mirror of
https://git.rtems.org/rtems-libbsd/
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8440506ee8
- Update the file builder generator to handle generator specific cflags and includes. The tcpdump and libpcap have localised headers and need specific headers paths to see them. There are also module specific flags and these need to be passed to the lex and yacc generators. - Add the tcpdump support.
119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
#include <machine/rtems-bsd-user-space.h>
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/*
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* Marko Kiiskila carnil@cs.tut.fi
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*
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* Tampere University of Technology - Telecommunications Laboratory
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*
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* Permission to use, copy, modify and distribute this
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* software and its documentation is hereby granted,
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* provided that both the copyright notice and this
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* permission notice appear in all copies of the software,
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* derivative works or modified versions, and any portions
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* thereof, that both notices appear in supporting
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* documentation, and that the use of this software is
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* acknowledged in any publications resulting from using
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* the software.
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*
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* TUT ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION AND DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS
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* SOFTWARE.
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*
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*/
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#ifndef lint
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static const char rcsid[] _U_ =
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"@(#) $Header: /tcpdump/master/tcpdump/print-cip.c,v 1.26 2005-07-07 01:22:17 guy Exp $ (LBL)";
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#endif
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <tcpdump-stdinc.h>
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#include <stdio.h>
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#include <pcap.h>
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#include "interface.h"
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#include "addrtoname.h"
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#include "ethertype.h"
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#include "ether.h"
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#define RFC1483LLC_LEN 8
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static unsigned char rfcllc[] = {
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0xaa, /* DSAP: non-ISO */
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0xaa, /* SSAP: non-ISO */
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0x03, /* Ctrl: Unnumbered Information Command PDU */
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0x00, /* OUI: EtherType */
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0x00,
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0x00 };
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static inline void
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cip_print(int length)
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{
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/*
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* There is no MAC-layer header, so just print the length.
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*/
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printf("%d: ", length);
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}
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/*
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* This is the top level routine of the printer. 'p' points
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* to the LLC/SNAP or raw header of the packet, 'h->ts' is the timestamp,
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* 'h->len' is the length of the packet off the wire, and 'h->caplen'
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* is the number of bytes actually captured.
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*/
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u_int
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cip_if_print(const struct pcap_pkthdr *h, const u_char *p)
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{
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u_int caplen = h->caplen;
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u_int length = h->len;
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u_short extracted_ethertype;
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if (memcmp(rfcllc, p, sizeof(rfcllc))==0 && caplen < RFC1483LLC_LEN) {
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printf("[|cip]");
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return (0);
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}
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if (eflag)
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cip_print(length);
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if (memcmp(rfcllc, p, sizeof(rfcllc)) == 0) {
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/*
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* LLC header is present. Try to print it & higher layers.
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*/
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if (llc_print(p, length, caplen, NULL, NULL,
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&extracted_ethertype) == 0) {
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/* ether_type not known, print raw packet */
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if (!eflag)
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cip_print(length);
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if (extracted_ethertype) {
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printf("(LLC %s) ",
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etherproto_string(htons(extracted_ethertype)));
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}
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if (!suppress_default_print)
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default_print(p, caplen);
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}
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} else {
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/*
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* LLC header is absent; treat it as just IP.
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*/
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ip_print(gndo, p, length);
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}
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return (0);
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}
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/*
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* Local Variables:
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* c-style: whitesmith
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* c-basic-offset: 8
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* End:
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*/
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