The Tcpdump Group git mirrors - tcpdump/blobdiff

* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

*/

* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

*/

-#ifndef lint

-static const char rcsid[] =

- "@(#) $Header: /tcpdump/master/tcpdump/print-fddi.c,v 1.36 1999-10-07 23:47:11 mcr Exp $ (LBL)";

+#ifdef HAVE_CONFIG_H

+#include "config.h"

#endif

-#ifdef HAVE_FDDI

-#include <sys/param.h>

-#include <sys/time.h>

-#include <sys/socket.h>

-#include <sys/file.h>

-#include <sys/ioctl.h>

+#include <netdissect-stdinc.h>

-#if __STDC__

-struct mbuf;

-struct rtentry;

-#endif

-#include <net/if.h>

-

-#include <netinet/in.h>

-#include <netinet/if_ether.h>

-#include <netinet/in_systm.h>

-#include <netinet/ip.h>

-

-#include <ctype.h>

-#include <netdb.h>

-#include <pcap.h>

-#include <stdio.h>

#include <string.h>

-#include "interface.h"

+#include "netdissect.h"

#include "addrtoname.h"

-#include "ethertype.h"

+#include "ether.h"

+

+/*

+ * Based on Ultrix if_fddi.h

+ */

+

+struct fddi_header {

+ u_char fddi_fc; /* frame control */

+ u_char fddi_dhost[6];

+ u_char fddi_shost[6];

+};

+

+/*

+ * Length of an FDDI header; note that some compilers may pad

+ * "struct fddi_header" to a multiple of 4 bytes, for example, so

+ * "sizeof (struct fddi_header)" may not give the right

+ * answer.

+ */

+#define FDDI_HDRLEN 13

+

+/* Useful values for fddi_fc (frame control) field */

+

+/*

+ * FDDI Frame Control bits

+ */

+#define FDDIFC_C 0x80 /* Class bit */

+#define FDDIFC_L 0x40 /* Address length bit */

+#define FDDIFC_F 0x30 /* Frame format bits */

+#define FDDIFC_Z 0x0f /* Control bits */

-#include "fddi.h"

+/*

+ * FDDI Frame Control values. (48-bit addressing only).

+ */

+#define FDDIFC_VOID 0x40 /* Void frame */

+#define FDDIFC_NRT 0x80 /* Nonrestricted token */

+#define FDDIFC_RT 0xc0 /* Restricted token */

+#define FDDIFC_SMT_INFO 0x41 /* SMT Info */

+#define FDDIFC_SMT_NSA 0x4F /* SMT Next station adrs */

+#define FDDIFC_MAC_BEACON 0xc2 /* MAC Beacon frame */

+#define FDDIFC_MAC_CLAIM 0xc3 /* MAC Claim frame */

+#define FDDIFC_LLC_ASYNC 0x50 /* Async. LLC frame */

+#define FDDIFC_LLC_SYNC 0xd0 /* Sync. LLC frame */

+#define FDDIFC_IMP_ASYNC 0x60 /* Implementor Async. */

+#define FDDIFC_IMP_SYNC 0xe0 /* Implementor Synch. */

+#define FDDIFC_SMT 0x40 /* SMT frame */

+#define FDDIFC_MAC 0xc0 /* MAC frame */

+

+#define FDDIFC_CLFF 0xF0 /* Class/Length/Format bits */

+#define FDDIFC_ZZZZ 0x0F /* Control bits */

/*

* Some FDDI interfaces use bit-swapped addresses.

*/

/*

* Some FDDI interfaces use bit-swapped addresses.

*/

-#if defined(ultrix) || defined(__alpha) || defined(__bsdi)

+#if defined(ultrix) || defined(__alpha) || defined(__bsdi) || defined(__NetBSD__) || defined(__linux__)

int fddi_bitswap = 0;

#else

int fddi_bitswap = 1;

int fddi_bitswap = 0;

#else

int fddi_bitswap = 1;

* - vj

*/

* - vj

*/

-#define FDDI_HDRLEN (sizeof(struct fddi_header))

-

-static u_char fddi_bit_swap[] = {

+static const u_char fddi_bit_swap[] = {

0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,

0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,

0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,

0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,

0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,

0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,

* Print FDDI frame-control bits

*/

static inline void

* Print FDDI frame-control bits

*/

static inline void

-print_fddi_fc(u_char fc)

+print_fddi_fc(netdissect_options *ndo, u_char fc)

{

switch (fc) {

case FDDIFC_VOID: /* Void frame */

{

switch (fc) {

case FDDIFC_VOID: /* Void frame */

- printf("void ");

+ ND_PRINT((ndo, "void "));

break;

case FDDIFC_NRT: /* Nonrestricted token */

break;

case FDDIFC_NRT: /* Nonrestricted token */

- printf("nrt ");

+ ND_PRINT((ndo, "nrt "));

break;

case FDDIFC_RT: /* Restricted token */

break;

case FDDIFC_RT: /* Restricted token */

- printf("rt ");

+ ND_PRINT((ndo, "rt "));

break;

case FDDIFC_SMT_INFO: /* SMT Info */

break;

case FDDIFC_SMT_INFO: /* SMT Info */

- printf("info ");

+ ND_PRINT((ndo, "info "));

break;

case FDDIFC_SMT_NSA: /* SMT Next station adrs */

break;

case FDDIFC_SMT_NSA: /* SMT Next station adrs */

- printf("nsa ");

+ ND_PRINT((ndo, "nsa "));

break;

case FDDIFC_MAC_BEACON: /* MAC Beacon frame */

break;

case FDDIFC_MAC_BEACON: /* MAC Beacon frame */

- printf("beacon ");

+ ND_PRINT((ndo, "beacon "));

break;

case FDDIFC_MAC_CLAIM: /* MAC Claim frame */

break;

case FDDIFC_MAC_CLAIM: /* MAC Claim frame */

- printf("claim ");

+ ND_PRINT((ndo, "claim "));

break;

default:

switch (fc & FDDIFC_CLFF) {

case FDDIFC_MAC:

break;

default:

switch (fc & FDDIFC_CLFF) {

case FDDIFC_MAC:

- printf("mac%1x ", fc & FDDIFC_ZZZZ);

+ ND_PRINT((ndo, "mac%1x ", fc & FDDIFC_ZZZZ));

break;

case FDDIFC_SMT:

break;

case FDDIFC_SMT:

- printf("smt%1x ", fc & FDDIFC_ZZZZ);

+ ND_PRINT((ndo, "smt%1x ", fc & FDDIFC_ZZZZ));

break;

case FDDIFC_LLC_ASYNC:

break;

case FDDIFC_LLC_ASYNC:

- printf("async%1x ", fc & FDDIFC_ZZZZ);

+ ND_PRINT((ndo, "async%1x ", fc & FDDIFC_ZZZZ));

break;

case FDDIFC_LLC_SYNC:

break;

case FDDIFC_LLC_SYNC:

- printf("sync%1x ", fc & FDDIFC_ZZZZ);

+ ND_PRINT((ndo, "sync%1x ", fc & FDDIFC_ZZZZ));

break;

case FDDIFC_IMP_ASYNC:

break;

case FDDIFC_IMP_ASYNC:

- printf("imp_async%1x ", fc & FDDIFC_ZZZZ);

+ ND_PRINT((ndo, "imp_async%1x ", fc & FDDIFC_ZZZZ));

break;

case FDDIFC_IMP_SYNC:

break;

case FDDIFC_IMP_SYNC:

- printf("imp_sync%1x ", fc & FDDIFC_ZZZZ);

+ ND_PRINT((ndo, "imp_sync%1x ", fc & FDDIFC_ZZZZ));

break;

default:

break;

default:

- printf("%02x ", fc);

+ ND_PRINT((ndo, "%02x ", fc));

break;

}

break;

}

fsrc[i] = fddi_bit_swap[fddip->fddi_shost[i]];

}

else {

fsrc[i] = fddi_bit_swap[fddip->fddi_shost[i]];

}

else {

- memcpy(fdst, (char *)fddip->fddi_dhost, 6);

- memcpy(fsrc, (char *)fddip->fddi_shost, 6);

+ memcpy(fdst, (const char *)fddip->fddi_dhost, 6);

+ memcpy(fsrc, (const char *)fddip->fddi_shost, 6);

}

* Print the FDDI MAC header

*/

static inline void

* Print the FDDI MAC header

*/

static inline void

-fddi_print(register const struct fddi_header *fddip, register u_int length,

- register const u_char *fsrc, register const u_char *fdst)

+fddi_hdr_print(netdissect_options *ndo,

+ register const struct fddi_header *fddip, register u_int length,

+ register const u_char *fsrc, register const u_char *fdst)

{

- char *srcname, *dstname;

-

- srcname = etheraddr_string(fsrc);

- dstname = etheraddr_string(fdst);

-

- if (vflag)

- (void) printf("%02x %s %s %d: ",

- fddip->fddi_fc,

- srcname, dstname,

- length);

- else if (qflag)

- printf("%s %s %d: ", srcname, dstname, length);

- else {

- (void) print_fddi_fc(fddip->fddi_fc);

- (void) printf("%s %s %d: ", srcname, dstname, length);

- }

+ const char *srcname, *dstname;

+

+ srcname = etheraddr_string(ndo, fsrc);

+ dstname = etheraddr_string(ndo, fdst);

+

+ if (!ndo->ndo_qflag)

+ print_fddi_fc(ndo, fddip->fddi_fc);

+ ND_PRINT((ndo, "%s > %s, length %u: ",

+ srcname, dstname,

+ length));

}

static inline void

}

static inline void

-fddi_smt_print(const u_char *p, u_int length)

+fddi_smt_print(netdissect_options *ndo, const u_char *p _U_, u_int length _U_)

{

- printf("<SMT printer not yet implemented>");

+ ND_PRINT((ndo, "<SMT printer not yet implemented>"));

}

-/*

- * This is the top level routine of the printer. 'sp' is the points

- * to the FDDI header of the packet, 'tvp' is the timestamp,

- * 'length' is the length of the packet off the wire, and 'caplen'

- * is the number of bytes actually captured.

- */

-void

-fddi_if_print(u_char *pcap, const struct pcap_pkthdr *h,

- register const u_char *p)

+u_int

+fddi_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen)

{

- u_int caplen = h->caplen;

- u_int length = h->len;

- const struct fddi_header *fddip = (struct fddi_header *)p;

- extern u_short extracted_ethertype;

+ const struct fddi_header *fddip = (const struct fddi_header *)p;

struct ether_header ehdr;

-

- ts_print(&h->ts);

+ int llc_hdrlen;

if (caplen < FDDI_HDRLEN) {

- printf("[|fddi]");

- goto out;

+ ND_PRINT((ndo, "[|fddi]"));

+ return (caplen);

}

+

/*

* Get the FDDI addresses into a canonical form

*/

extract_fddi_addrs(fddip, (char *)ESRC(&ehdr), (char *)EDST(&ehdr));

/*

* Get the FDDI addresses into a canonical form

*/

extract_fddi_addrs(fddip, (char *)ESRC(&ehdr), (char *)EDST(&ehdr));

- /*

- * 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.

- */

- snapend = p + caplen;

- /*

- * Actually, the only printer that uses packetp is print-bootp.c,

- * and it assumes that packetp points to an Ethernet header. The

- * right thing to do is to fix print-bootp.c to know which link

- * type is in use when it excavates. XXX

- */

- packetp = (u_char *)&ehdr;

- if (eflag)

- fddi_print(fddip, length, ESRC(&ehdr), EDST(&ehdr));

+ if (ndo->ndo_eflag)

+ fddi_hdr_print(ndo, fddip, length, ESRC(&ehdr), EDST(&ehdr));

/* Skip over FDDI MAC header */

length -= FDDI_HDRLEN;

/* Skip over FDDI MAC header */

length -= FDDI_HDRLEN;

caplen -= FDDI_HDRLEN;

/* Frame Control field determines interpretation of packet */

caplen -= FDDI_HDRLEN;

/* Frame Control field determines interpretation of packet */

- extracted_ethertype = 0;

if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_LLC_ASYNC) {

/* Try to print the LLC-layer header & higher layers */

if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_LLC_ASYNC) {

/* Try to print the LLC-layer header & higher layers */

- if (llc_print(p, length, caplen, ESRC(&ehdr), EDST(&ehdr))

- == 0) {

+ llc_hdrlen = llc_print(ndo, p, length, caplen, ESRC(&ehdr), EDST(&ehdr));

+ if (llc_hdrlen < 0) {

/*

* Some kinds of LLC packet we cannot

* handle intelligently

*/

/*

* Some kinds of LLC packet we cannot

* handle intelligently

*/

- if (!eflag)

- fddi_print(fddip, length,

- ESRC(&ehdr), EDST(&ehdr));

- if (extracted_ethertype) {

- printf("(LLC %s) ",

- etherproto_string(htons(extracted_ethertype)));

- }

- if (!xflag && !qflag)

- default_print(p, caplen);

+ if (!ndo->ndo_suppress_default_print)

+ ND_DEFAULTPRINT(p, caplen);

+ llc_hdrlen = -llc_hdrlen;

}

- } else if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_SMT)

- fddi_smt_print(p, caplen);

- else {

+ } else if ((fddip->fddi_fc & FDDIFC_CLFF) == FDDIFC_SMT) {

+ fddi_smt_print(ndo, p, caplen);

+ llc_hdrlen = 0;

+ } else {

/* Some kinds of FDDI packet we cannot handle intelligently */

- if (!eflag)

- fddi_print(fddip, length, ESRC(&ehdr), EDST(&ehdr));

- if (!xflag && !qflag)

- default_print(p, caplen);

+ if (!ndo->ndo_eflag)

+ fddi_hdr_print(ndo, fddip, length + FDDI_HDRLEN, ESRC(&ehdr),

+ EDST(&ehdr));

+ if (!ndo->ndo_suppress_default_print)

+ ND_DEFAULTPRINT(p, caplen);

+ llc_hdrlen = 0;

}

- if (xflag)

- default_print(p, caplen);

-out:

- putchar('\n');

+ return (FDDI_HDRLEN + llc_hdrlen);

}

-#else

-#include <sys/types.h>

-#include <sys/time.h>

-#include <stdio.h>

-

-#include "interface.h"

-void

-fddi_if_print(u_char *pcap, const struct pcap_pkthdr *h,

- register const u_char *p)

+/*

+ * This is the top level routine of the printer. 'p' points

+ * to the FDDI header of the packet, 'h->ts' is the timestamp,

+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'

+ * is the number of bytes actually captured.

+ */

+u_int

+fddi_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, register const u_char *p)

{

-

- error("not configured for fddi");

- /* NOTREACHED */

+ return (fddi_print(ndo, p, h->len, h->caplen));

}

-#endif