You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
2.3 KiB
69 lines
2.3 KiB
/* |
|
* Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994 |
|
* 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. |
|
*/ |
|
|
|
/* \summary: IP Payload Compression Protocol (IPComp) printer */ |
|
|
|
#ifdef HAVE_CONFIG_H |
|
#include "config.h" |
|
#endif |
|
|
|
#include <netdissect-stdinc.h> |
|
|
|
struct ipcomp { |
|
uint8_t comp_nxt; /* Next Header */ |
|
uint8_t comp_flags; /* Length of data, in 32bit */ |
|
uint16_t comp_cpi; /* Compression parameter index */ |
|
}; |
|
|
|
#include "netdissect.h" |
|
#include "extract.h" |
|
|
|
void |
|
ipcomp_print(netdissect_options *ndo, register const u_char *bp) |
|
{ |
|
register const struct ipcomp *ipcomp; |
|
uint16_t cpi; |
|
|
|
ipcomp = (const struct ipcomp *)bp; |
|
ND_TCHECK(*ipcomp); |
|
cpi = EXTRACT_16BITS(&ipcomp->comp_cpi); |
|
|
|
ND_PRINT((ndo, "IPComp(cpi=0x%04x)", cpi)); |
|
|
|
/* |
|
* XXX - based on the CPI, we could decompress the packet here. |
|
* Packet buffer management is a headache (if we decompress, |
|
* packet will become larger). |
|
* |
|
* We would decompress the packet and then call a routine that, |
|
* based on ipcomp->comp_nxt, dissects the decompressed data. |
|
* |
|
* Until we do that, however, we just return -1, so that |
|
* the loop that processes "protocol"/"next header" types |
|
* stops - there's nothing more it can do with a compressed |
|
* payload. |
|
*/ |
|
return; |
|
|
|
trunc: |
|
ND_PRINT((ndo, "[|IPCOMP]")); |
|
return; |
|
}
|
|
|