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/* filters.h - Filter structs
* Copyright (C) 2002-2003, 2008, 2010-2012 Free Software Foundation,
* Inc.
*
* Author: Timo Schulz
*
* This file is part of OpenCDK.
*
* The OpenCDK library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
#ifndef CDK_FILTERS_H
#define CDK_FILTERS_H
enum
{
STREAMCTL_READ = 0,
STREAMCTL_WRITE = 1,
STREAMCTL_FREE = 2
};
typedef struct
{
cipher_hd_st hd;
digest_hd_st mdc;
int mdc_method;
u32 datalen;
struct
{
size_t on;
off_t size;
off_t nleft;
} blkmode;
cdk_stream_t s;
} cipher_filter_t;
typedef struct
{
int digest_algo;
digest_hd_st md;
int md_initialized;
} md_filter_t;
typedef struct
{
const char *le; /* line endings */
const char *hdrlines;
u32 crc;
int crc_okay;
int idx, idx2;
} armor_filter_t;
typedef struct
{
cdk_lit_format_t mode;
char *orig_filename; /* This original name of the input file. */
char *filename;
digest_hd_st md;
int md_initialized;
struct
{
size_t on;
off_t size;
} blkmode;
} literal_filter_t;
typedef struct
{
size_t inbufsize;
byte inbuf[8192];
size_t outbufsize;
byte outbuf[8192];
int algo; /* compress algo */
int level;
} compress_filter_t;
typedef struct
{
const char *lf;
} text_filter_t;
/*-- armor.c -*/
int _cdk_filter_armor (void *opaque, int ctl, FILE * in, FILE * out);
/*-- cipher.c --*/
cdk_error_t _cdk_filter_hash (void *opaque, int ctl, FILE * in, FILE * out);
cdk_error_t _cdk_filter_cipher (void *opaque, int ctl, FILE * in, FILE * out);
/*-- literal.c --*/
int _cdk_filter_literal (void *opaque, int ctl, FILE * in, FILE * out);
int _cdk_filter_text (void *opaque, int ctl, FILE * in, FILE * out);
/*-- compress.c --*/
cdk_error_t _cdk_filter_compress (void *opaque, int ctl,
FILE * in, FILE * out);
#endif /* CDK_FILTERS_H */
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