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114 lines
3.8 KiB
114 lines
3.8 KiB
/* |
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* Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000 |
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* The Regents of the University of California. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that: (1) source code distributions |
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* retain the above copyright notice and this paragraph in its entirety, (2) |
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* distributions including binary code include the above copyright notice and |
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* this paragraph in its entirety in the documentation or other materials |
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* provided with the distribution, and (3) all advertising materials mentioning |
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* features or use of this software display the following acknowledgement: |
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* ``This product includes software developed by the University of California, |
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
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* the University nor the names of its contributors may be used to endorse |
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* or promote products derived from this software without specific prior |
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* written permission. |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
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*/ |
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/* \summary: Symantec Enterprise Firewall printer */ |
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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 <netdissect-stdinc.h> |
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#include "netdissect.h" |
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#include "extract.h" |
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#include "ethertype.h" |
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#include "ether.h" |
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struct symantec_header { |
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uint8_t stuff1[6]; |
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uint16_t ether_type; |
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uint8_t stuff2[36]; |
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}; |
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static inline void |
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symantec_hdr_print(netdissect_options *ndo, register const u_char *bp, u_int length) |
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{ |
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register const struct symantec_header *sp; |
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uint16_t etype; |
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sp = (const struct symantec_header *)bp; |
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etype = EXTRACT_16BITS(&sp->ether_type); |
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if (!ndo->ndo_qflag) { |
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if (etype <= ETHERMTU) |
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ND_PRINT((ndo, "invalid ethertype %u", etype)); |
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else |
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ND_PRINT((ndo, "ethertype %s (0x%04x)", |
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tok2str(ethertype_values,"Unknown", etype), |
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etype)); |
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} else { |
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if (etype <= ETHERMTU) |
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ND_PRINT((ndo, "invalid ethertype %u", etype)); |
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else |
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ND_PRINT((ndo, "%s", tok2str(ethertype_values,"Unknown Ethertype (0x%04x)", etype))); |
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} |
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ND_PRINT((ndo, ", length %u: ", 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 ether 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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symantec_if_print(netdissect_options *ndo, const struct pcap_pkthdr *h, const u_char *p) |
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{ |
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u_int length = h->len; |
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u_int caplen = h->caplen; |
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const struct symantec_header *sp; |
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u_short ether_type; |
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if (caplen < sizeof (struct symantec_header)) { |
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ND_PRINT((ndo, "[|symantec]")); |
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return caplen; |
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} |
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if (ndo->ndo_eflag) |
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symantec_hdr_print(ndo, p, length); |
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length -= sizeof (struct symantec_header); |
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caplen -= sizeof (struct symantec_header); |
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sp = (const struct symantec_header *)p; |
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p += sizeof (struct symantec_header); |
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ether_type = EXTRACT_16BITS(&sp->ether_type); |
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if (ether_type <= ETHERMTU) { |
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/* ether_type not known, print raw packet */ |
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if (!ndo->ndo_eflag) |
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symantec_hdr_print(ndo, (const u_char *)sp, length + sizeof (struct symantec_header)); |
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if (!ndo->ndo_suppress_default_print) |
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ND_DEFAULTPRINT(p, caplen); |
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} else if (ethertype_print(ndo, ether_type, p, length, caplen, NULL, NULL) == 0) { |
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/* ether_type not known, print raw packet */ |
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if (!ndo->ndo_eflag) |
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symantec_hdr_print(ndo, (const u_char *)sp, length + sizeof (struct symantec_header)); |
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if (!ndo->ndo_suppress_default_print) |
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ND_DEFAULTPRINT(p, caplen); |
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} |
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return (sizeof (struct symantec_header)); |
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}
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