2 * Copyright (C) 1998, 1999, 2000, 2001, 2003,
3 * 2005 Free Software Foundation, Inc.
5 * This file is part of GnuPG.
7 * GnuPG is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
12 * GnuPG is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <https://www.gnu.org/licenses/>.
27 gcry_md_hd_t md; /* catch all */
28 gcry_md_hd_t md2; /* if we want to calculate an alternate hash */
30 } md_filter_context_t;
33 int refcount; /* Initialized to 1. */
35 /* these fields may be initialized */
36 int what; /* what kind of armor headers to write */
37 int only_keyblocks; /* skip all headers but ".... key block" */
38 const char *hdrlines; /* write these headerlines */
40 /* these fields must be initialized to zero */
41 int no_openpgp_data; /* output flag: "No valid OpenPGP data found" */
43 /* the following fields must be initialized to zero */
44 int inp_checked; /* set if the input has been checked */
45 int inp_bypass; /* set if the input is not armored */
46 int in_cleartext; /* clear text message */
47 int not_dash_escaped; /* clear text is not dash escaped */
48 int hashes; /* detected hash algorithms */
49 int faked; /* we are faking a literal data packet */
50 int truncated; /* number of truncated lines */
52 byte eol[3]; /* The end of line characters as a
53 zero-terminated string. Defaults
54 (eol[0]=='\0') to whatever the local
57 byte *buffer; /* malloced buffer */
58 unsigned buffer_size; /* and size of this buffer */
59 unsigned buffer_len; /* used length of the buffer */
60 unsigned buffer_pos; /* read position */
66 int status; /* an internal state flag */
68 int any_data; /* any valid armored data seen */
69 int pending_lf; /* used together with faked */
70 } armor_filter_context_t;
72 struct unarmor_pump_s;
73 typedef struct unarmor_pump_s *UnarmorPump;
76 struct compress_filter_context_s {
78 void *opaque; /* (used for z_stream) */
83 int algo; /* compress algo */
86 void (*release)(struct compress_filter_context_s*);
88 typedef struct compress_filter_context_s compress_filter_context_t;
94 gcry_cipher_hd_t cipher_hd;
96 gcry_md_hd_t mdc_hash;
98 int create_mdc; /* flag will be set by the cipher filter */
99 } cipher_filter_context_t;
104 byte *buffer; /* malloced buffer */
105 unsigned buffer_size; /* and size of this buffer */
106 unsigned buffer_len; /* used length of the buffer */
107 unsigned buffer_pos; /* read position */
108 int truncated; /* number of truncated lines */
109 int not_dash_escaped;
114 } text_filter_context_t;
118 char *what; /* description */
119 u32 last_time; /* last time reported */
120 unsigned long last; /* last amount reported */
121 unsigned long offset; /* current amount */
122 unsigned long total; /* total amount */
124 } progress_filter_context_t;
126 /* encrypt_filter_context_t defined in main.h */
129 int md_filter( void *opaque, int control, iobuf_t a, byte *buf, size_t *ret_len);
130 void free_md_filter_context( md_filter_context_t *mfx );
133 armor_filter_context_t *new_armor_context (void);
134 void release_armor_context (armor_filter_context_t *afx);
135 int push_armor_filter (armor_filter_context_t *afx, iobuf_t iobuf);
136 int use_armor_filter( iobuf_t a );
137 UnarmorPump unarmor_pump_new (void);
138 void unarmor_pump_release (UnarmorPump x);
139 int unarmor_pump (UnarmorPump x, int c);
142 void push_compress_filter(iobuf_t out,compress_filter_context_t *zfx,int algo);
143 void push_compress_filter2(iobuf_t out,compress_filter_context_t *zfx,
147 int cipher_filter( void *opaque, int control,
148 iobuf_t chain, byte *buf, size_t *ret_len);
150 /*-- textfilter.c --*/
151 int text_filter( void *opaque, int control,
152 iobuf_t chain, byte *buf, size_t *ret_len);
153 int copy_clearsig_text (iobuf_t out, iobuf_t inp, gcry_md_hd_t md,
154 int escape_dash, int escape_from);
157 progress_filter_context_t *new_progress_context (void);
158 void release_progress_context (progress_filter_context_t *pfx);
159 void handle_progress (progress_filter_context_t *pfx,
160 iobuf_t inp, const char *name);
162 #endif /*G10_FILTER_H*/