mirror of
git://git.gnupg.org/gnupg.git
synced 2024-10-31 20:08:43 +01:00
820 lines
18 KiB
C
820 lines
18 KiB
C
/* protect-tool.c - A tool to test the secret key protection
|
||
* Copyright (C) 2002, 2003, 2004, 2006 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/>.
|
||
*/
|
||
|
||
#include <config.h>
|
||
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <stddef.h>
|
||
#include <stdarg.h>
|
||
#include <string.h>
|
||
#include <errno.h>
|
||
#include <assert.h>
|
||
#include <sys/stat.h>
|
||
#include <unistd.h>
|
||
#ifdef HAVE_LOCALE_H
|
||
#include <locale.h>
|
||
#endif
|
||
#ifdef HAVE_LANGINFO_CODESET
|
||
#include <langinfo.h>
|
||
#endif
|
||
#ifdef HAVE_DOSISH_SYSTEM
|
||
#include <fcntl.h> /* for setmode() */
|
||
#endif
|
||
|
||
#include "agent.h"
|
||
#include "i18n.h"
|
||
#include "get-passphrase.h"
|
||
#include "sysutils.h"
|
||
#include "../common/init.h"
|
||
|
||
|
||
enum cmd_and_opt_values
|
||
{
|
||
aNull = 0,
|
||
oVerbose = 'v',
|
||
oArmor = 'a',
|
||
oPassphrase = 'P',
|
||
|
||
oProtect = 'p',
|
||
oUnprotect = 'u',
|
||
|
||
oNoVerbose = 500,
|
||
oShadow,
|
||
oShowShadowInfo,
|
||
oShowKeygrip,
|
||
oS2Kcalibration,
|
||
oCanonical,
|
||
|
||
oStore,
|
||
oForce,
|
||
oHaveCert,
|
||
oNoFailOnExist,
|
||
oHomedir,
|
||
oPrompt,
|
||
oStatusMsg,
|
||
oDebugUseOCB,
|
||
|
||
oAgentProgram
|
||
};
|
||
|
||
|
||
struct rsa_secret_key_s
|
||
{
|
||
gcry_mpi_t n; /* public modulus */
|
||
gcry_mpi_t e; /* public exponent */
|
||
gcry_mpi_t d; /* exponent */
|
||
gcry_mpi_t p; /* prime p. */
|
||
gcry_mpi_t q; /* prime q. */
|
||
gcry_mpi_t u; /* inverse of p mod q. */
|
||
};
|
||
|
||
|
||
static int opt_armor;
|
||
static int opt_canonical;
|
||
static int opt_store;
|
||
static int opt_force;
|
||
static int opt_no_fail_on_exist;
|
||
static int opt_have_cert;
|
||
static const char *opt_passphrase;
|
||
static char *opt_prompt;
|
||
static int opt_status_msg;
|
||
static const char *opt_agent_program;
|
||
static int opt_debug_use_ocb;
|
||
|
||
static char *get_passphrase (int promptno);
|
||
static void release_passphrase (char *pw);
|
||
|
||
|
||
static ARGPARSE_OPTS opts[] = {
|
||
ARGPARSE_group (300, N_("@Commands:\n ")),
|
||
|
||
ARGPARSE_c (oProtect, "protect", "protect a private key"),
|
||
ARGPARSE_c (oUnprotect, "unprotect", "unprotect a private key"),
|
||
ARGPARSE_c (oShadow, "shadow", "create a shadow entry for a public key"),
|
||
ARGPARSE_c (oShowShadowInfo, "show-shadow-info", "return the shadow info"),
|
||
ARGPARSE_c (oShowKeygrip, "show-keygrip", "show the \"keygrip\""),
|
||
ARGPARSE_c (oS2Kcalibration, "s2k-calibration", "@"),
|
||
|
||
ARGPARSE_group (301, N_("@\nOptions:\n ")),
|
||
|
||
ARGPARSE_s_n (oVerbose, "verbose", "verbose"),
|
||
ARGPARSE_s_n (oArmor, "armor", "write output in advanced format"),
|
||
ARGPARSE_s_n (oCanonical, "canonical", "write output in canonical format"),
|
||
|
||
ARGPARSE_s_s (oPassphrase, "passphrase", "|STRING|use passphrase STRING"),
|
||
ARGPARSE_s_n (oHaveCert, "have-cert",
|
||
"certificate to export provided on STDIN"),
|
||
ARGPARSE_s_n (oStore, "store",
|
||
"store the created key in the appropriate place"),
|
||
ARGPARSE_s_n (oForce, "force",
|
||
"force overwriting"),
|
||
ARGPARSE_s_n (oNoFailOnExist, "no-fail-on-exist", "@"),
|
||
ARGPARSE_s_s (oHomedir, "homedir", "@"),
|
||
ARGPARSE_s_s (oPrompt, "prompt",
|
||
"|ESCSTRING|use ESCSTRING as prompt in pinentry"),
|
||
ARGPARSE_s_n (oStatusMsg, "enable-status-msg", "@"),
|
||
|
||
ARGPARSE_s_s (oAgentProgram, "agent-program", "@"),
|
||
|
||
ARGPARSE_s_n (oDebugUseOCB, "debug-use-ocb", "@"), /* For hacking only. */
|
||
|
||
ARGPARSE_end ()
|
||
};
|
||
|
||
static const char *
|
||
my_strusage (int level)
|
||
{
|
||
const char *p;
|
||
switch (level)
|
||
{
|
||
case 11: p = "gpg-protect-tool (" GNUPG_NAME ")";
|
||
break;
|
||
case 13: p = VERSION; break;
|
||
case 17: p = PRINTABLE_OS_NAME; break;
|
||
case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
|
||
|
||
case 1:
|
||
case 40: p = _("Usage: gpg-protect-tool [options] (-h for help)\n");
|
||
break;
|
||
case 41: p = _("Syntax: gpg-protect-tool [options] [args]\n"
|
||
"Secret key maintenance tool\n");
|
||
break;
|
||
|
||
default: p = NULL;
|
||
}
|
||
return p;
|
||
}
|
||
|
||
|
||
/* static void */
|
||
/* print_mpi (const char *text, gcry_mpi_t a) */
|
||
/* { */
|
||
/* char *buf; */
|
||
/* void *bufaddr = &buf; */
|
||
/* int rc; */
|
||
|
||
/* rc = gcry_mpi_aprint (GCRYMPI_FMT_HEX, bufaddr, NULL, a); */
|
||
/* if (rc) */
|
||
/* log_info ("%s: [error printing number: %s]\n", text, gpg_strerror (rc)); */
|
||
/* else */
|
||
/* { */
|
||
/* log_info ("%s: %s\n", text, buf); */
|
||
/* gcry_free (buf); */
|
||
/* } */
|
||
/* } */
|
||
|
||
|
||
|
||
static unsigned char *
|
||
make_canonical (const char *fname, const char *buf, size_t buflen)
|
||
{
|
||
int rc;
|
||
size_t erroff, len;
|
||
gcry_sexp_t sexp;
|
||
unsigned char *result;
|
||
|
||
rc = gcry_sexp_sscan (&sexp, &erroff, buf, buflen);
|
||
if (rc)
|
||
{
|
||
log_error ("invalid S-Expression in '%s' (off=%u): %s\n",
|
||
fname, (unsigned int)erroff, gpg_strerror (rc));
|
||
return NULL;
|
||
}
|
||
len = gcry_sexp_sprint (sexp, GCRYSEXP_FMT_CANON, NULL, 0);
|
||
assert (len);
|
||
result = xmalloc (len);
|
||
len = gcry_sexp_sprint (sexp, GCRYSEXP_FMT_CANON, result, len);
|
||
assert (len);
|
||
gcry_sexp_release (sexp);
|
||
return result;
|
||
}
|
||
|
||
static char *
|
||
make_advanced (const unsigned char *buf, size_t buflen)
|
||
{
|
||
int rc;
|
||
size_t erroff, len;
|
||
gcry_sexp_t sexp;
|
||
char *result;
|
||
|
||
rc = gcry_sexp_sscan (&sexp, &erroff, (const char*)buf, buflen);
|
||
if (rc)
|
||
{
|
||
log_error ("invalid canonical S-Expression (off=%u): %s\n",
|
||
(unsigned int)erroff, gpg_strerror (rc));
|
||
return NULL;
|
||
}
|
||
len = gcry_sexp_sprint (sexp, GCRYSEXP_FMT_ADVANCED, NULL, 0);
|
||
assert (len);
|
||
result = xmalloc (len);
|
||
len = gcry_sexp_sprint (sexp, GCRYSEXP_FMT_ADVANCED, result, len);
|
||
assert (len);
|
||
gcry_sexp_release (sexp);
|
||
return result;
|
||
}
|
||
|
||
|
||
static char *
|
||
read_file (const char *fname, size_t *r_length)
|
||
{
|
||
FILE *fp;
|
||
char *buf;
|
||
size_t buflen;
|
||
|
||
if (!strcmp (fname, "-"))
|
||
{
|
||
size_t nread, bufsize = 0;
|
||
|
||
fp = stdin;
|
||
#ifdef HAVE_DOSISH_SYSTEM
|
||
setmode ( fileno(fp) , O_BINARY );
|
||
#endif
|
||
buf = NULL;
|
||
buflen = 0;
|
||
#define NCHUNK 8192
|
||
do
|
||
{
|
||
bufsize += NCHUNK;
|
||
if (!buf)
|
||
buf = xmalloc (bufsize);
|
||
else
|
||
buf = xrealloc (buf, bufsize);
|
||
|
||
nread = fread (buf+buflen, 1, NCHUNK, fp);
|
||
if (nread < NCHUNK && ferror (fp))
|
||
{
|
||
log_error ("error reading '[stdin]': %s\n", strerror (errno));
|
||
xfree (buf);
|
||
return NULL;
|
||
}
|
||
buflen += nread;
|
||
}
|
||
while (nread == NCHUNK);
|
||
#undef NCHUNK
|
||
|
||
}
|
||
else
|
||
{
|
||
struct stat st;
|
||
|
||
fp = fopen (fname, "rb");
|
||
if (!fp)
|
||
{
|
||
log_error ("can't open '%s': %s\n", fname, strerror (errno));
|
||
return NULL;
|
||
}
|
||
|
||
if (fstat (fileno(fp), &st))
|
||
{
|
||
log_error ("can't stat '%s': %s\n", fname, strerror (errno));
|
||
fclose (fp);
|
||
return NULL;
|
||
}
|
||
|
||
buflen = st.st_size;
|
||
buf = xmalloc (buflen+1);
|
||
if (fread (buf, buflen, 1, fp) != 1)
|
||
{
|
||
log_error ("error reading '%s': %s\n", fname, strerror (errno));
|
||
fclose (fp);
|
||
xfree (buf);
|
||
return NULL;
|
||
}
|
||
fclose (fp);
|
||
}
|
||
|
||
*r_length = buflen;
|
||
return buf;
|
||
}
|
||
|
||
|
||
static unsigned char *
|
||
read_key (const char *fname)
|
||
{
|
||
char *buf;
|
||
size_t buflen;
|
||
unsigned char *key;
|
||
|
||
buf = read_file (fname, &buflen);
|
||
if (!buf)
|
||
return NULL;
|
||
key = make_canonical (fname, buf, buflen);
|
||
xfree (buf);
|
||
return key;
|
||
}
|
||
|
||
|
||
|
||
static void
|
||
read_and_protect (const char *fname)
|
||
{
|
||
int rc;
|
||
unsigned char *key;
|
||
unsigned char *result;
|
||
size_t resultlen;
|
||
char *pw;
|
||
|
||
key = read_key (fname);
|
||
if (!key)
|
||
return;
|
||
|
||
pw = get_passphrase (1);
|
||
rc = agent_protect (key, pw, &result, &resultlen, 0,
|
||
opt_debug_use_ocb? 1 : -1);
|
||
release_passphrase (pw);
|
||
xfree (key);
|
||
if (rc)
|
||
{
|
||
log_error ("protecting the key failed: %s\n", gpg_strerror (rc));
|
||
return;
|
||
}
|
||
|
||
if (opt_armor)
|
||
{
|
||
char *p = make_advanced (result, resultlen);
|
||
xfree (result);
|
||
if (!p)
|
||
return;
|
||
result = (unsigned char*)p;
|
||
resultlen = strlen (p);
|
||
}
|
||
|
||
fwrite (result, resultlen, 1, stdout);
|
||
xfree (result);
|
||
}
|
||
|
||
|
||
static void
|
||
read_and_unprotect (ctrl_t ctrl, const char *fname)
|
||
{
|
||
int rc;
|
||
unsigned char *key;
|
||
unsigned char *result;
|
||
size_t resultlen;
|
||
char *pw;
|
||
gnupg_isotime_t protected_at;
|
||
|
||
key = read_key (fname);
|
||
if (!key)
|
||
return;
|
||
|
||
rc = agent_unprotect (ctrl, key, (pw=get_passphrase (1)),
|
||
protected_at, &result, &resultlen);
|
||
release_passphrase (pw);
|
||
xfree (key);
|
||
if (rc)
|
||
{
|
||
if (opt_status_msg)
|
||
log_info ("[PROTECT-TOOL:] bad-passphrase\n");
|
||
log_error ("unprotecting the key failed: %s\n", gpg_strerror (rc));
|
||
return;
|
||
}
|
||
if (opt.verbose)
|
||
{
|
||
if (*protected_at)
|
||
log_info ("key protection done at %.4s-%.2s-%.2s %.2s:%.2s:%s\n",
|
||
protected_at, protected_at+4, protected_at+6,
|
||
protected_at+9, protected_at+11, protected_at+13);
|
||
else
|
||
log_info ("key protection done at [unknown]\n");
|
||
}
|
||
|
||
if (opt_armor)
|
||
{
|
||
char *p = make_advanced (result, resultlen);
|
||
xfree (result);
|
||
if (!p)
|
||
return;
|
||
result = (unsigned char*)p;
|
||
resultlen = strlen (p);
|
||
}
|
||
|
||
fwrite (result, resultlen, 1, stdout);
|
||
xfree (result);
|
||
}
|
||
|
||
|
||
|
||
static void
|
||
read_and_shadow (const char *fname)
|
||
{
|
||
int rc;
|
||
unsigned char *key;
|
||
unsigned char *result;
|
||
size_t resultlen;
|
||
unsigned char dummy_info[] = "(8:313233342:43)";
|
||
|
||
key = read_key (fname);
|
||
if (!key)
|
||
return;
|
||
|
||
rc = agent_shadow_key (key, dummy_info, &result);
|
||
xfree (key);
|
||
if (rc)
|
||
{
|
||
log_error ("shadowing the key failed: %s\n", gpg_strerror (rc));
|
||
return;
|
||
}
|
||
resultlen = gcry_sexp_canon_len (result, 0, NULL,NULL);
|
||
assert (resultlen);
|
||
|
||
if (opt_armor)
|
||
{
|
||
char *p = make_advanced (result, resultlen);
|
||
xfree (result);
|
||
if (!p)
|
||
return;
|
||
result = (unsigned char*)p;
|
||
resultlen = strlen (p);
|
||
}
|
||
|
||
fwrite (result, resultlen, 1, stdout);
|
||
xfree (result);
|
||
}
|
||
|
||
static void
|
||
show_shadow_info (const char *fname)
|
||
{
|
||
int rc;
|
||
unsigned char *key;
|
||
const unsigned char *info;
|
||
size_t infolen;
|
||
|
||
key = read_key (fname);
|
||
if (!key)
|
||
return;
|
||
|
||
rc = agent_get_shadow_info (key, &info);
|
||
xfree (key);
|
||
if (rc)
|
||
{
|
||
log_error ("get_shadow_info failed: %s\n", gpg_strerror (rc));
|
||
return;
|
||
}
|
||
infolen = gcry_sexp_canon_len (info, 0, NULL,NULL);
|
||
assert (infolen);
|
||
|
||
if (opt_armor)
|
||
{
|
||
char *p = make_advanced (info, infolen);
|
||
if (!p)
|
||
return;
|
||
fwrite (p, strlen (p), 1, stdout);
|
||
xfree (p);
|
||
}
|
||
else
|
||
fwrite (info, infolen, 1, stdout);
|
||
}
|
||
|
||
|
||
static void
|
||
show_file (const char *fname)
|
||
{
|
||
unsigned char *key;
|
||
size_t keylen;
|
||
char *p;
|
||
|
||
key = read_key (fname);
|
||
if (!key)
|
||
return;
|
||
|
||
keylen = gcry_sexp_canon_len (key, 0, NULL,NULL);
|
||
assert (keylen);
|
||
|
||
if (opt_canonical)
|
||
{
|
||
fwrite (key, keylen, 1, stdout);
|
||
}
|
||
else
|
||
{
|
||
p = make_advanced (key, keylen);
|
||
if (p)
|
||
{
|
||
fwrite (p, strlen (p), 1, stdout);
|
||
xfree (p);
|
||
}
|
||
}
|
||
xfree (key);
|
||
}
|
||
|
||
static void
|
||
show_keygrip (const char *fname)
|
||
{
|
||
unsigned char *key;
|
||
gcry_sexp_t private;
|
||
unsigned char grip[20];
|
||
int i;
|
||
|
||
key = read_key (fname);
|
||
if (!key)
|
||
return;
|
||
|
||
if (gcry_sexp_new (&private, key, 0, 0))
|
||
{
|
||
log_error ("gcry_sexp_new failed\n");
|
||
return;
|
||
}
|
||
xfree (key);
|
||
|
||
if (!gcry_pk_get_keygrip (private, grip))
|
||
{
|
||
log_error ("can't calculate keygrip\n");
|
||
return;
|
||
}
|
||
gcry_sexp_release (private);
|
||
|
||
for (i=0; i < 20; i++)
|
||
printf ("%02X", grip[i]);
|
||
putchar ('\n');
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
int
|
||
main (int argc, char **argv )
|
||
{
|
||
ARGPARSE_ARGS pargs;
|
||
int cmd = 0;
|
||
const char *fname;
|
||
ctrl_t ctrl;
|
||
|
||
early_system_init ();
|
||
set_strusage (my_strusage);
|
||
gcry_control (GCRYCTL_SUSPEND_SECMEM_WARN);
|
||
log_set_prefix ("gpg-protect-tool", GPGRT_LOG_WITH_PREFIX);
|
||
|
||
/* Make sure that our subsystems are ready. */
|
||
i18n_init ();
|
||
init_common_subsystems (&argc, &argv);
|
||
|
||
setup_libgcrypt_logging ();
|
||
gcry_control (GCRYCTL_INIT_SECMEM, 16384, 0);
|
||
|
||
pargs.argc = &argc;
|
||
pargs.argv = &argv;
|
||
pargs.flags= 1; /* (do not remove the args) */
|
||
while (arg_parse (&pargs, opts) )
|
||
{
|
||
switch (pargs.r_opt)
|
||
{
|
||
case oVerbose: opt.verbose++; break;
|
||
case oArmor: opt_armor=1; break;
|
||
case oCanonical: opt_canonical=1; break;
|
||
case oHomedir: gnupg_set_homedir (pargs.r.ret_str); break;
|
||
|
||
case oAgentProgram: opt_agent_program = pargs.r.ret_str; break;
|
||
|
||
case oProtect: cmd = oProtect; break;
|
||
case oUnprotect: cmd = oUnprotect; break;
|
||
case oShadow: cmd = oShadow; break;
|
||
case oShowShadowInfo: cmd = oShowShadowInfo; break;
|
||
case oShowKeygrip: cmd = oShowKeygrip; break;
|
||
case oS2Kcalibration: cmd = oS2Kcalibration; break;
|
||
|
||
case oPassphrase: opt_passphrase = pargs.r.ret_str; break;
|
||
case oStore: opt_store = 1; break;
|
||
case oForce: opt_force = 1; break;
|
||
case oNoFailOnExist: opt_no_fail_on_exist = 1; break;
|
||
case oHaveCert: opt_have_cert = 1; break;
|
||
case oPrompt: opt_prompt = pargs.r.ret_str; break;
|
||
case oStatusMsg: opt_status_msg = 1; break;
|
||
case oDebugUseOCB: opt_debug_use_ocb = 1; break;
|
||
|
||
default: pargs.err = ARGPARSE_PRINT_ERROR; break;
|
||
}
|
||
}
|
||
if (log_get_errorcount (0))
|
||
exit (2);
|
||
|
||
fname = "-";
|
||
if (argc == 1)
|
||
fname = *argv;
|
||
else if (argc > 1)
|
||
usage (1);
|
||
|
||
/* Allocate an CTRL object. An empty object should be sufficient. */
|
||
ctrl = xtrycalloc (1, sizeof *ctrl);
|
||
if (!ctrl)
|
||
{
|
||
log_error ("error allocating connection control data: %s\n",
|
||
strerror (errno));
|
||
agent_exit (1);
|
||
}
|
||
|
||
/* Set the information which can't be taken from envvars. */
|
||
gnupg_prepare_get_passphrase (GPG_ERR_SOURCE_DEFAULT,
|
||
opt.verbose,
|
||
opt_agent_program,
|
||
NULL, NULL, NULL);
|
||
|
||
if (opt_prompt)
|
||
opt_prompt = percent_plus_unescape (opt_prompt, 0);
|
||
|
||
if (cmd == oProtect)
|
||
read_and_protect (fname);
|
||
else if (cmd == oUnprotect)
|
||
read_and_unprotect (ctrl, fname);
|
||
else if (cmd == oShadow)
|
||
read_and_shadow (fname);
|
||
else if (cmd == oShowShadowInfo)
|
||
show_shadow_info (fname);
|
||
else if (cmd == oShowKeygrip)
|
||
show_keygrip (fname);
|
||
else if (cmd == oS2Kcalibration)
|
||
{
|
||
if (!opt.verbose)
|
||
opt.verbose++; /* We need to see something. */
|
||
get_standard_s2k_count ();
|
||
}
|
||
else
|
||
show_file (fname);
|
||
|
||
xfree (ctrl);
|
||
|
||
agent_exit (0);
|
||
return 8; /*NOTREACHED*/
|
||
}
|
||
|
||
void
|
||
agent_exit (int rc)
|
||
{
|
||
rc = rc? rc : log_get_errorcount(0)? 2 : 0;
|
||
exit (rc);
|
||
}
|
||
|
||
|
||
/* Return the passphrase string and ask the agent if it has not been
|
||
set from the command line PROMPTNO select the prompt to display:
|
||
0 = default
|
||
1 = taken from the option --prompt
|
||
2 = for unprotecting a pkcs#12 object
|
||
3 = for protecting a new pkcs#12 object
|
||
4 = for protecting an imported pkcs#12 in our system
|
||
*/
|
||
static char *
|
||
get_passphrase (int promptno)
|
||
{
|
||
char *pw;
|
||
int err;
|
||
const char *desc;
|
||
char *orig_codeset;
|
||
int repeat = 0;
|
||
|
||
if (opt_passphrase)
|
||
return xstrdup (opt_passphrase);
|
||
|
||
orig_codeset = i18n_switchto_utf8 ();
|
||
|
||
if (promptno == 1 && opt_prompt)
|
||
{
|
||
desc = opt_prompt;
|
||
}
|
||
else if (promptno == 2)
|
||
{
|
||
desc = _("Please enter the passphrase to unprotect the "
|
||
"PKCS#12 object.");
|
||
}
|
||
else if (promptno == 3)
|
||
{
|
||
desc = _("Please enter the passphrase to protect the "
|
||
"new PKCS#12 object.");
|
||
repeat = 1;
|
||
}
|
||
else if (promptno == 4)
|
||
{
|
||
desc = _("Please enter the passphrase to protect the "
|
||
"imported object within the GnuPG system.");
|
||
repeat = 1;
|
||
}
|
||
else
|
||
desc = _("Please enter the passphrase or the PIN\n"
|
||
"needed to complete this operation.");
|
||
|
||
i18n_switchback (orig_codeset);
|
||
|
||
err = gnupg_get_passphrase (NULL, NULL, _("Passphrase:"), desc,
|
||
repeat, repeat, 1, &pw);
|
||
if (err)
|
||
{
|
||
if (gpg_err_code (err) == GPG_ERR_CANCELED
|
||
|| gpg_err_code (err) == GPG_ERR_FULLY_CANCELED)
|
||
log_info (_("cancelled\n"));
|
||
else
|
||
log_error (_("error while asking for the passphrase: %s\n"),
|
||
gpg_strerror (err));
|
||
agent_exit (0);
|
||
}
|
||
assert (pw);
|
||
|
||
return pw;
|
||
}
|
||
|
||
|
||
static void
|
||
release_passphrase (char *pw)
|
||
{
|
||
if (pw)
|
||
{
|
||
wipememory (pw, strlen (pw));
|
||
xfree (pw);
|
||
}
|
||
}
|
||
|
||
|
||
/* Stub function. */
|
||
int
|
||
agent_key_available (const unsigned char *grip)
|
||
{
|
||
(void)grip;
|
||
return -1; /* Not available. */
|
||
}
|
||
|
||
char *
|
||
agent_get_cache (const char *key, cache_mode_t cache_mode)
|
||
{
|
||
(void)key;
|
||
(void)cache_mode;
|
||
return NULL;
|
||
}
|
||
|
||
gpg_error_t
|
||
agent_askpin (ctrl_t ctrl,
|
||
const char *desc_text, const char *prompt_text,
|
||
const char *initial_errtext,
|
||
struct pin_entry_info_s *pininfo,
|
||
const char *keyinfo, cache_mode_t cache_mode)
|
||
{
|
||
gpg_error_t err;
|
||
unsigned char *passphrase;
|
||
size_t size;
|
||
|
||
(void)ctrl;
|
||
(void)desc_text;
|
||
(void)prompt_text;
|
||
(void)initial_errtext;
|
||
(void)keyinfo;
|
||
(void)cache_mode;
|
||
|
||
*pininfo->pin = 0; /* Reset the PIN. */
|
||
passphrase = get_passphrase (0);
|
||
size = strlen (passphrase);
|
||
if (size >= pininfo->max_length)
|
||
return gpg_error (GPG_ERR_TOO_LARGE);
|
||
|
||
memcpy (&pininfo->pin, passphrase, size);
|
||
xfree (passphrase);
|
||
pininfo->pin[size] = 0;
|
||
if (pininfo->check_cb)
|
||
{
|
||
/* More checks by utilizing the optional callback. */
|
||
pininfo->cb_errtext = NULL;
|
||
err = pininfo->check_cb (pininfo);
|
||
}
|
||
else
|
||
err = 0;
|
||
return err;
|
||
}
|
||
|
||
/* Replacement for the function in findkey.c. Here we write the key
|
||
* to stdout. */
|
||
int
|
||
agent_write_private_key (const unsigned char *grip,
|
||
const void *buffer, size_t length, int force)
|
||
{
|
||
char hexgrip[40+4+1];
|
||
char *p;
|
||
|
||
(void)force;
|
||
|
||
bin2hex (grip, 20, hexgrip);
|
||
strcpy (hexgrip+40, ".key");
|
||
p = make_advanced (buffer, length);
|
||
if (p)
|
||
{
|
||
printf ("# Begin dump of %s\n%s%s# End dump of %s\n",
|
||
hexgrip, p, (*p && p[strlen(p)-1] == '\n')? "":"\n", hexgrip);
|
||
xfree (p);
|
||
}
|
||
|
||
return 0;
|
||
}
|