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/* context.h - Definitions for a GPGME context.
Copyright (C) 2000 Werner Koch (dd9jn)
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2010 g10 Code GmbH
This file is part of GPGME.
GPGME 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 2.1 of
the License, or (at your option) any later version.
GPGME 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 CONTEXT_H
#define CONTEXT_H
#include "gpgme.h"
#include "engine.h"
#include "wait.h"
#include "sema.h"
extern gpgme_error_t _gpgme_selftest;
/* Operations might require to remember arbitrary information and data
objects during invocations of the status handler. The
ctx_op_data structure provides a generic framework to hook in
such additional data. */
typedef enum
{
OPDATA_DECRYPT, OPDATA_SIGN, OPDATA_ENCRYPT, OPDATA_PASSPHRASE,
OPDATA_IMPORT, OPDATA_GENKEY, OPDATA_KEYLIST, OPDATA_EDIT,
OPDATA_VERIFY, OPDATA_TRUSTLIST, OPDATA_ASSUAN, OPDATA_VFS_MOUNT,
OPDATA_PASSWD
} ctx_op_data_id_t;
/* "gpgmeres" in ASCII. */
#define CTX_OP_DATA_MAGIC 0x736572656d677067ULL
struct ctx_op_data
{
/* A magic word just to make sure people don't deallocate something
that ain't a result structure. */
unsigned long long magic;
/* The next element in the linked list, or NULL if this is the last
element. Used by op data structures linked into a context. */
struct ctx_op_data *next;
/* The type of the hook data, which can be used by a routine to
lookup the hook data. */
ctx_op_data_id_t type;
/* The function to release HOOK and all its associated resources.
Can be NULL if no special deallocation routine is necessary. */
void (*cleanup) (void *hook);
/* The hook that points to the operation data. */
void *hook;
/* The number of outstanding references. */
int references;
};
typedef struct ctx_op_data *ctx_op_data_t;
/* The context defines an environment in which crypto operations can
be performed (sequentially). */
struct gpgme_context
{
DECLARE_LOCK (lock);
/* True if the context was canceled asynchronously. */
int canceled;
/* The engine info for this context. */
gpgme_engine_info_t engine_info;
/* The protocol used by this context. */
gpgme_protocol_t protocol;
/* The running engine process. */
engine_t engine;
/* Engine's sub protocol. */
gpgme_protocol_t sub_protocol;
/* True if armor mode should be used. */
unsigned int use_armor : 1;
/* True if text mode should be used. */
unsigned int use_textmode : 1;
/* Flags for keylist mode. */
gpgme_keylist_mode_t keylist_mode;
/* Number of certs to be included. */
unsigned int include_certs;
/* The number of keys in signers. */
unsigned int signers_len;
/* Size of the following array. */
unsigned int signers_size;
gpgme_key_t *signers;
/* The signature notations for this context. */
gpgme_sig_notation_t sig_notations;
/* The locale for the pinentry. */
char *lc_ctype;
char *lc_messages;
/* The operation data hooked into the context. */
ctx_op_data_t op_data;
/* The user provided passphrase callback and its hook value. */
gpgme_passphrase_cb_t passphrase_cb;
void *passphrase_cb_value;
/* The user provided progress callback and its hook value. */
gpgme_progress_cb_t progress_cb;
void *progress_cb_value;
/* A list of file descriptors in active use by the current
operation. */
struct fd_table fdt;
struct gpgme_io_cbs io_cbs;
};
#endif /* CONTEXT_H */
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