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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 09:59:15 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 09:59:15 +0000 |
commit | 8de1ee1b2b676b0d07586f0752750dd6b0fb7511 (patch) | |
tree | dd46fd7dc3863045696cd0e48032d8a36fa0daf5 /g10/filter.h | |
parent | Initial commit. (diff) | |
download | gnupg2-upstream.tar.xz gnupg2-upstream.zip |
Adding upstream version 2.2.27.upstream/2.2.27upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'g10/filter.h')
-rw-r--r-- | g10/filter.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/g10/filter.h b/g10/filter.h new file mode 100644 index 0000000..2c1e513 --- /dev/null +++ b/g10/filter.h @@ -0,0 +1,164 @@ +/* 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; + unsigned int wrote_header : 1; + unsigned int short_blklen_warn : 1; + unsigned long short_blklen_count; + gcry_md_hd_t mdc_hash; + byte enchash[20]; +} 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 --*/ +gpg_error_t push_compress_filter (iobuf_t out, compress_filter_context_t *zfx, + int algo); +gpg_error_t 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*/ |