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filter.h
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/* filter.h
* Copyright (C) 1998, 1999, 2000, 2001, 2003,
* 2005 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
*/
#ifndef G10_FILTER_H
#define G10_FILTER_H
#include
"../common/types.h"
#include
"dek.h"
typedef
struct
{
gcry_md_hd_t
md
;
/* catch all */
gcry_md_hd_t
md2
;
/* if we want to calculate an alternate hash */
size_t
maxbuf_size
;
}
md_filter_context_t
;
typedef
struct
{
int
refcount
;
/* Initialized to 1. */
/* these fields may be initialized */
int
what
;
/* what kind of armor headers to write */
int
only_keyblocks
;
/* skip all headers but ".... key block" */
const
char
*
hdrlines
;
/* write these headerlines */
/* these fields must be initialized to zero */
int
no_openpgp_data
;
/* output flag: "No valid OpenPGP data found" */
/* the following fields must be initialized to zero */
int
inp_checked
;
/* set if the input has been checked */
int
inp_bypass
;
/* set if the input is not armored */
int
in_cleartext
;
/* clear text message */
int
not_dash_escaped
;
/* clear text is not dash escaped */
int
hashes
;
/* detected hash algorithms */
int
faked
;
/* we are faking a literal data packet */
int
truncated
;
/* number of truncated lines */
int
qp_detected
;
byte
eol
[
3
];
/* The end of line characters as a
zero-terminated string. Defaults
(eol[0]=='\0') to whatever the local
platform uses. */
byte
*
buffer
;
/* malloced buffer */
unsigned
buffer_size
;
/* and size of this buffer */
unsigned
buffer_len
;
/* used length of the buffer */
unsigned
buffer_pos
;
/* read position */
byte
radbuf
[
4
];
int
idx
,
idx2
;
u32
crc
;
int
status
;
/* an internal state flag */
int
cancel
;
int
any_data
;
/* any valid armored data seen */
int
pending_lf
;
/* used together with faked */
}
armor_filter_context_t
;
struct
unarmor_pump_s
;
typedef
struct
unarmor_pump_s
*
UnarmorPump
;
struct
compress_filter_context_s
{
int
status
;
void
*
opaque
;
/* (used for z_stream) */
byte
*
inbuf
;
unsigned
inbufsize
;
byte
*
outbuf
;
unsigned
outbufsize
;
int
algo
;
/* compress algo */
int
algo1hack
;
int
new_ctb
;
void
(
*
release
)(
struct
compress_filter_context_s
*
);
};
typedef
struct
compress_filter_context_s
compress_filter_context_t
;
typedef
struct
{
DEK
*
dek
;
u32
datalen
;
gcry_cipher_hd_t
cipher_hd
;
int
header
;
gcry_md_hd_t
mdc_hash
;
byte
enchash
[
20
];
int
create_mdc
;
/* flag will be set by the cipher filter */
}
cipher_filter_context_t
;
typedef
struct
{
byte
*
buffer
;
/* malloced buffer */
unsigned
buffer_size
;
/* and size of this buffer */
unsigned
buffer_len
;
/* used length of the buffer */
unsigned
buffer_pos
;
/* read position */
int
truncated
;
/* number of truncated lines */
int
not_dash_escaped
;
int
escape_from
;
gcry_md_hd_t
md
;
int
pending_lf
;
int
pending_esc
;
}
text_filter_context_t
;
typedef
struct
{
char
*
what
;
/* description */
u32
last_time
;
/* last time reported */
unsigned
long
last
;
/* last amount reported */
unsigned
long
offset
;
/* current amount */
unsigned
long
total
;
/* total amount */
int
refcount
;
}
progress_filter_context_t
;
/* encrypt_filter_context_t defined in main.h */
/*-- mdfilter.c --*/
int
md_filter
(
void
*
opaque
,
int
control
,
iobuf_t
a
,
byte
*
buf
,
size_t
*
ret_len
);
void
free_md_filter_context
(
md_filter_context_t
*
mfx
);
/*-- armor.c --*/
armor_filter_context_t
*
new_armor_context
(
void
);
void
release_armor_context
(
armor_filter_context_t
*
afx
);
int
push_armor_filter
(
armor_filter_context_t
*
afx
,
iobuf_t
iobuf
);
int
use_armor_filter
(
iobuf_t
a
);
UnarmorPump
unarmor_pump_new
(
void
);
void
unarmor_pump_release
(
UnarmorPump
x
);
int
unarmor_pump
(
UnarmorPump
x
,
int
c
);
/*-- compress.c --*/
void
push_compress_filter
(
iobuf_t
out
,
compress_filter_context_t
*
zfx
,
int
algo
);
void
push_compress_filter2
(
iobuf_t
out
,
compress_filter_context_t
*
zfx
,
int
algo
,
int
rel
);
/*-- cipher.c --*/
int
cipher_filter
(
void
*
opaque
,
int
control
,
iobuf_t
chain
,
byte
*
buf
,
size_t
*
ret_len
);
/*-- textfilter.c --*/
int
text_filter
(
void
*
opaque
,
int
control
,
iobuf_t
chain
,
byte
*
buf
,
size_t
*
ret_len
);
int
copy_clearsig_text
(
iobuf_t
out
,
iobuf_t
inp
,
gcry_md_hd_t
md
,
int
escape_dash
,
int
escape_from
);
/*-- progress.c --*/
progress_filter_context_t
*
new_progress_context
(
void
);
void
release_progress_context
(
progress_filter_context_t
*
pfx
);
void
handle_progress
(
progress_filter_context_t
*
pfx
,
iobuf_t
inp
,
const
char
*
name
);
#endif
/*G10_FILTER_H*/
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Expires
Mon, Dec 23, 1:34 PM (1 h, 55 m)
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