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/* passphrase.c - Passphrase callback.
Copyright (C) 2000 Werner Koch (dd9jn)
Copyright (C) 2001, 2002, 2003, 2004, 2005 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include "gpgme.h"
#include "context.h"
#include "ops.h"
typedef struct
{
int no_passphrase;
char *uid_hint;
char *passphrase_info;
int bad_passphrase;
} *op_data_t;
static void
release_op_data (void *hook)
{
op_data_t opd = (op_data_t) hook;
if (opd->passphrase_info)
free (opd->passphrase_info);
if (opd->uid_hint)
free (opd->uid_hint);
}
gpgme_error_t
_gpgme_passphrase_status_handler (void *priv, gpgme_status_code_t code,
char *args)
{
gpgme_ctx_t ctx = (gpgme_ctx_t) priv;
gpgme_error_t err;
void *hook;
op_data_t opd;
err = _gpgme_op_data_lookup (ctx, OPDATA_PASSPHRASE, &hook,
sizeof (*opd), release_op_data);
opd = hook;
if (err)
return err;
switch (code)
{
case GPGME_STATUS_USERID_HINT:
if (opd->uid_hint)
free (opd->uid_hint);
if (!(opd->uid_hint = strdup (args)))
return gpg_error_from_errno (errno);
break;
case GPGME_STATUS_BAD_PASSPHRASE:
opd->bad_passphrase++;
opd->no_passphrase = 0;
break;
case GPGME_STATUS_GOOD_PASSPHRASE:
opd->bad_passphrase = 0;
opd->no_passphrase = 0;
break;
case GPGME_STATUS_NEED_PASSPHRASE:
case GPGME_STATUS_NEED_PASSPHRASE_SYM:
case GPGME_STATUS_NEED_PASSPHRASE_PIN:
if (opd->passphrase_info)
free (opd->passphrase_info);
opd->passphrase_info = strdup (args);
if (!opd->passphrase_info)
return gpg_error_from_errno (errno);
break;
case GPGME_STATUS_MISSING_PASSPHRASE:
opd->no_passphrase = 1;
break;
case GPGME_STATUS_EOF:
if (opd->no_passphrase || opd->bad_passphrase)
return gpg_error (GPG_ERR_BAD_PASSPHRASE);
break;
default:
/* Ignore all other codes. */
break;
}
return 0;
}
gpgme_error_t
_gpgme_passphrase_command_handler (void *priv, gpgme_status_code_t code,
const char *key, int fd, int *processed)
{
gpgme_ctx_t ctx = (gpgme_ctx_t) priv;
gpgme_error_t err;
void *hook;
op_data_t opd;
assert (ctx->passphrase_cb);
err = _gpgme_op_data_lookup (ctx, OPDATA_PASSPHRASE, &hook,
sizeof (*opd), release_op_data);
opd = hook;
if (err)
return err;
if (code == GPGME_STATUS_GET_HIDDEN
&& (!strcmp (key, "passphrase.enter")
|| !strcmp (key, "passphrase.pin.ask")))
{
if (processed)
*processed = 1;
err = ctx->passphrase_cb (ctx->passphrase_cb_value,
opd->uid_hint, opd->passphrase_info,
opd->bad_passphrase, fd);
/* Reset bad passphrase flag, in case it is correct now. */
opd->bad_passphrase = 0;
return err;
}
return 0;
}
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