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NetBSD/sys/opencrypto/deflate.h

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-start to make the GZIP code similar to DEFLATE: make error handling work the same way, grow output buffer exponentially and kill reallocation of metadata -minor cleanup, make definitions private which are implementation details of deflate.gzip
2011-03-09 14:36:43 +03:00
/* $NetBSD: deflate.h,v 1.9 2011/03/09 11:36:43 drochner Exp $ */
Commit initial NetBSD port of the OpenCrypto Framework (OCF). This code is derived from Sam Leffler's FreeBSD port of OCF, which is in turn a port of Angelos Keromytis's OpenBSD work. Credit to Sam and Angelos, any blame for the NetBSD port to me.
2003-07-26 01:12:39 +04:00
/* $FreeBSD: src/sys/opencrypto/deflate.h,v 1.1.2.1 2002/11/21 23:34:23 sam Exp $ */
/* $OpenBSD: deflate.h,v 1.3 2002/03/14 01:26:51 millert Exp $ */
/*
* Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj@wabbitt.org)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
nuke trailing whitespace
2005-02-27 01:31:44 +03:00
* Definition for the wrapper around the deflate compression
Commit initial NetBSD port of the OpenCrypto Framework (OCF). This code is derived from Sam Leffler's FreeBSD port of OCF, which is in turn a port of Angelos Keromytis's OpenBSD work. Credit to Sam and Angelos, any blame for the NetBSD port to me.
2003-07-26 01:12:39 +04:00
* algorithm used in /sys/crypto
*/
#ifndef _CRYPTO_DEFLATE_H_
#define _CRYPTO_DEFLATE_H_
Back out previous. It broke the build.
2008-05-05 17:41:29 +04:00
#include <net/zlib.h>
Commit initial NetBSD port of the OpenCrypto Framework (OCF). This code is derived from Sam Leffler's FreeBSD port of OCF, which is in turn a port of Angelos Keromytis's OpenBSD work. Credit to Sam and Angelos, any blame for the NetBSD port to me.
2003-07-26 01:12:39 +04:00
#define Z_METHOD 8
#define Z_MEMLEVEL 8
#define MINCOMP 2 /* won't be used, but must be defined */
small modifications in dealing with the unknown result size of compression/ decompression: -seperate the IPCOMP specific rule that compression must not grow the data from general compression semantics: Introduce a special name CRYPTO_DEFLATE_COMP_NOGROW/comp_algo_deflate_nogrow to describe the IPCOMP semantics and use it there. (being here, fix the check so that equal size is considered failure as well as required by RFC2393) Customers of CRYPTO_DEFLATE_COMP/comp_algo_deflate now always get deflated data back, even if they are not smaller than the original. -allow to pass a "size hint" to the DEFLATE decompression function which is used for the initial buffer allocation. Due to the changes done there, additional allocations and extra copies are avoided if the initial allocation is sufficient. Set the size hint to MCLBYTES (=2k) in IPCOMP which should be good for many use cases.
2011-02-24 23:03:41 +03:00
u_int32_t deflate_global(u_int8_t *, u_int32_t, int, u_int8_t **, int);
u_int32_t gzip_global(u_int8_t *, u_int32_t, int, u_int8_t **, int);
Commit initial NetBSD port of the OpenCrypto Framework (OCF). This code is derived from Sam Leffler's FreeBSD port of OCF, which is in turn a port of Angelos Keromytis's OpenBSD work. Credit to Sam and Angelos, any blame for the NetBSD port to me.
2003-07-26 01:12:39 +04:00
#endif /* _CRYPTO_DEFLATE_H_ */