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encrypt-sign.c
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encrypt-sign.c
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/* encrypt-sign.c - encrypt and verify functions
* Copyright (C) 2000 Werner Koch (dd9jn)
* Copyright (C) 2001, 2002, 2003, 2004 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 <https://gnu.org/licenses/>.
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "gpgme.h"
#include "debug.h"
#include "context.h"
#include "ops.h"
static gpgme_error_t
encrypt_sign_status_handler (void *priv, gpgme_status_code_t code, char *args)
{
gpgme_error_t err;
err = _gpgme_progress_status_handler (priv, code, args);
if (!err)
err = _gpgme_encrypt_status_handler (priv, code, args);
if (!err)
err = _gpgme_sign_status_handler (priv, code, args);
return err;
}
static gpgme_error_t
encrypt_sym_status_handler (void *priv, gpgme_status_code_t code, char *args)
{
gpgme_error_t err;
err = _gpgme_progress_status_handler (priv, code, args);
if (!err)
err = _gpgme_sign_status_handler (priv, code, args);
if (!err)
err = _gpgme_passphrase_status_handler (priv, code, args);
return err;
}
static gpgme_error_t
encrypt_sign_start (gpgme_ctx_t ctx, int synchronous, gpgme_key_t recp[],
const char *recpstring,
gpgme_encrypt_flags_t flags,
gpgme_data_t plain, gpgme_data_t cipher)
{
gpgme_error_t err;
int symmetric;
err = _gpgme_op_reset (ctx, synchronous);
if (err)
return err;
symmetric = (!recp && !recpstring) || (flags & GPGME_ENCRYPT_SYMMETRIC);
if (!plain)
return gpg_error (GPG_ERR_NO_DATA);
if (!cipher)
return gpg_error (GPG_ERR_INV_VALUE);
if (recp && !*recp)
return gpg_error (GPG_ERR_INV_VALUE);
err = _gpgme_op_encrypt_init_result (ctx);
if (err)
return err;
err = _gpgme_op_sign_init_result (ctx);
if (err)
return err;
if (ctx->passphrase_cb)
{
err = _gpgme_engine_set_command_handler
(ctx->engine, _gpgme_passphrase_command_handler, ctx);
if (err)
return err;
}
_gpgme_engine_set_status_handler (ctx->engine,
symmetric
? encrypt_sym_status_handler
: encrypt_sign_status_handler,
ctx);
return _gpgme_engine_op_encrypt_sign (ctx->engine, recp, recpstring,
flags, plain,
cipher, ctx->use_armor,
ctx /* FIXME */);
}
/* Old version of gpgme_op_encrypt_sign_ext_start w/o RECPSTRING. */
gpgme_error_t
gpgme_op_encrypt_sign_start (gpgme_ctx_t ctx, gpgme_key_t recp[],
gpgme_encrypt_flags_t flags,
gpgme_data_t plain, gpgme_data_t cipher)
{
return gpgme_op_encrypt_sign_ext_start (ctx, recp, NULL,
flags, plain, cipher);
}
/* Old version of gpgme_op_encrypt_sign_ext w/o RECPSTRING. */
gpgme_error_t
gpgme_op_encrypt_sign (gpgme_ctx_t ctx, gpgme_key_t recp[],
gpgme_encrypt_flags_t flags,
gpgme_data_t plain, gpgme_data_t cipher)
{
return gpgme_op_encrypt_sign_ext (ctx, recp, NULL, flags, plain, cipher);
}
/* Encrypt plaintext PLAIN within CTX for the recipients RECP and
* store the resulting ciphertext in CIPHER. Also sign the ciphertext
* with the signers in CTX. */
gpgme_error_t
gpgme_op_encrypt_sign_ext (gpgme_ctx_t ctx, gpgme_key_t recp[],
const char *recpstring,
gpgme_encrypt_flags_t flags,
gpgme_data_t plain, gpgme_data_t cipher)
{
gpgme_error_t err;
TRACE_BEG (DEBUG_CTX, "gpgme_op_encrypt_sign", ctx,
"flags=0x%x, plain=%p, cipher=%p", flags, plain, cipher);
if (!ctx)
return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
if (_gpgme_debug_trace () && (recp || recpstring))
{
if (recp)
{
int i = 0;
while (recp[i])
{
TRACE_LOG ("recipient[%i] = %p (%s)", i, recp[i],
(recp[i]->subkeys && recp[i]->subkeys->fpr) ?
recp[i]->subkeys->fpr : "invalid");
i++;
}
}
else
{
TRACE_LOG ("recipients = '%s'", recpstring);
}
}
err = encrypt_sign_start (ctx, 1, recp, recpstring, flags, plain, cipher);
if (!err)
err = _gpgme_wait_one (ctx);
return TRACE_ERR (err);
}
/* Encrypt plaintext PLAIN within CTX for the recipients RECP and
store the resulting ciphertext in CIPHER. Also sign the ciphertext
with the signers in CTX. */
gpgme_error_t
gpgme_op_encrypt_sign_ext_start (gpgme_ctx_t ctx, gpgme_key_t recp[],
const char *recpstring,
gpgme_encrypt_flags_t flags,
gpgme_data_t plain, gpgme_data_t cipher)
{
gpgme_error_t err;
TRACE_BEG (DEBUG_CTX, "gpgme_op_encrypt_sign_start", ctx,
"flags=0x%x, plain=%p, cipher=%p", flags, plain, cipher);
if (!ctx)
return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
if (_gpgme_debug_trace () && (recp || recpstring))
{
if (recp)
{
int i = 0;
while (recp[i])
{
TRACE_LOG ("recipient[%i] = %p (%s)", i, recp[i],
(recp[i]->subkeys && recp[i]->subkeys->fpr) ?
recp[i]->subkeys->fpr : "invalid");
i++;
}
}
else
{
TRACE_LOG ("recipients = '%s'", recpstring);
}
}
err = encrypt_sign_start (ctx, 0, recp, recpstring, flags, plain, cipher);
return err;
}

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