diff --git a/src/global.c b/src/global.c
index 4bd928b9..4d69b27b 100644
--- a/src/global.c
+++ b/src/global.c
@@ -1,1160 +1,1162 @@
/* global.c - global control functions
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003
* 2004, 2005, 2006, 2008, 2011,
* 2012 Free Software Foundation, Inc.
* Copyright (C) 2013, 2014 g10 Code GmbH
*
* This file is part of Libgcrypt.
*
* Libgcrypt 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.
*
* Libgcrypt 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 .
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#ifdef HAVE_SYSLOG
# include
#endif /*HAVE_SYSLOG*/
#include "g10lib.h"
#include "gcrypt-testapi.h"
#include "cipher.h"
#include "stdmem.h" /* our own memory allocator */
#include "secmem.h" /* our own secmem allocator */
/****************
* flag bits: 0 : general cipher debug
* 1 : general MPI debug
*/
static unsigned int debug_flags;
/* gcry_control (GCRYCTL_SET_FIPS_MODE), sets this flag so that the
initialization code switched fips mode on. */
static int force_fips_mode;
/* Controlled by global_init(). */
static int any_init_done;
/* Memory management. */
static gcry_handler_alloc_t alloc_func;
static gcry_handler_alloc_t alloc_secure_func;
static gcry_handler_secure_check_t is_secure_func;
static gcry_handler_realloc_t realloc_func;
static gcry_handler_free_t free_func;
static gcry_handler_no_mem_t outofcore_handler;
static void *outofcore_handler_value;
static int no_secure_memory;
/* Prototypes. */
static gpg_err_code_t external_lock_test (int cmd);
/* This is our handmade constructor. It gets called by any function
likely to be called at startup. The suggested way for an
application to make sure that this has been called is by using
gcry_check_version. */
static void
global_init (void)
{
gcry_error_t err = 0;
if (any_init_done)
return;
any_init_done = 1;
/* Tell the random module that we have seen an init call. */
_gcry_set_preferred_rng_type (0);
/* See whether the system is in FIPS mode. This needs to come as
early as possible but after ATH has been initialized. */
_gcry_initialize_fips_mode (force_fips_mode);
/* Before we do any other initialization we need to test available
hardware features. */
_gcry_detect_hw_features ();
/* Initialize the modules - this is mainly allocating some memory and
creating mutexes. */
err = _gcry_cipher_init ();
if (err)
goto fail;
err = _gcry_md_init ();
if (err)
goto fail;
err = _gcry_pk_init ();
if (err)
goto fail;
err = _gcry_primegen_init ();
if (err)
goto fail;
err = _gcry_secmem_module_init ();
if (err)
goto fail;
err = _gcry_mpi_init ();
if (err)
goto fail;
return;
fail:
BUG ();
}
/* This function is called by the macro fips_is_operational and makes
sure that the minimal initialization has been done. This is far
from a perfect solution and hides problems with an improper
initialization but at least in single-threaded mode it should work
reliable.
The reason we need this is that a lot of applications don't use
Libgcrypt properly by not running any initialization code at all.
They just call a Libgcrypt function and that is all what they want.
Now with the FIPS mode, that has the side effect of entering FIPS
mode (for security reasons, FIPS mode is the default if no
initialization has been done) and bailing out immediately because
the FSM is in the wrong state. If we always run the init code,
Libgcrypt can test for FIPS mode and at least if not in FIPS mode,
it will behave as before. Note that this on-the-fly initialization
is only done for the cryptographic functions subject to FIPS mode
and thus not all API calls will do such an initialization. */
int
_gcry_global_is_operational (void)
{
if (!any_init_done)
{
#ifdef HAVE_SYSLOG
syslog (LOG_USER|LOG_WARNING, "Libgcrypt warning: "
"missing initialization - please fix the application");
#endif /*HAVE_SYSLOG*/
global_init ();
}
return _gcry_fips_is_operational ();
}
/* Version number parsing. */
/* This function parses the first portion of the version number S and
stores it in *NUMBER. On success, this function returns a pointer
into S starting with the first character, which is not part of the
initial number portion; on failure, NULL is returned. */
static const char*
parse_version_number( const char *s, int *number )
{
int val = 0;
if( *s == '0' && isdigit(s[1]) )
return NULL; /* leading zeros are not allowed */
for ( ; isdigit(*s); s++ ) {
val *= 10;
val += *s - '0';
}
*number = val;
return val < 0? NULL : s;
}
/* This function breaks up the complete string-representation of the
version number S, which is of the following struture: ... The major,
minor and micro number components will be stored in *MAJOR, *MINOR
and *MICRO.
On success, the last component, the patch level, will be returned;
in failure, NULL will be returned. */
static const char *
parse_version_string( const char *s, int *major, int *minor, int *micro )
{
s = parse_version_number( s, major );
if( !s || *s != '.' )
return NULL;
s++;
s = parse_version_number( s, minor );
if( !s || *s != '.' )
return NULL;
s++;
s = parse_version_number( s, micro );
if( !s )
return NULL;
return s; /* patchlevel */
}
/* If REQ_VERSION is non-NULL, check that the version of the library
is at minimum the requested one. Returns the string representation
of the library version if the condition is satisfied; return NULL
if the requested version is newer than that of the library.
If a NULL is passed to this function, no check is done, but the
string representation of the library is simply returned. */
const char *
_gcry_check_version (const char *req_version)
{
const char *ver = VERSION;
int my_major, my_minor, my_micro;
int rq_major, rq_minor, rq_micro;
const char *my_plvl;
if (req_version && req_version[0] == 1 && req_version[1] == 1)
return _gcry_compat_identification ();
/* Initialize library. */
global_init ();
if ( !req_version )
/* Caller wants our version number. */
return ver;
/* Parse own version number. */
my_plvl = parse_version_string( ver, &my_major, &my_minor, &my_micro );
if ( !my_plvl )
/* very strange our own version is bogus. Shouldn't we use
assert() here and bail out in case this happens? -mo. */
return NULL;
/* Parse requested version number. */
if (!parse_version_string (req_version, &rq_major, &rq_minor, &rq_micro))
return NULL; /* req version string is invalid, this can happen. */
/* Compare version numbers. */
if ( my_major > rq_major
|| (my_major == rq_major && my_minor > rq_minor)
|| (my_major == rq_major && my_minor == rq_minor && my_micro > rq_micro)
|| (my_major == rq_major && my_minor == rq_minor
&& my_micro == rq_micro))
{
return ver;
}
return NULL;
}
static void
print_config ( int (*fnc)(FILE *fp, const char *format, ...), FILE *fp)
{
unsigned int hwfeatures, afeature;
int i;
const char *s;
fnc (fp, "version:%s:\n", VERSION);
fnc (fp, "ciphers:%s:\n", LIBGCRYPT_CIPHERS);
fnc (fp, "pubkeys:%s:\n", LIBGCRYPT_PUBKEY_CIPHERS);
fnc (fp, "digests:%s:\n", LIBGCRYPT_DIGESTS);
fnc (fp, "rnd-mod:"
#if USE_RNDEGD
"egd:"
#endif
#if USE_RNDLINUX
"linux:"
#endif
#if USE_RNDUNIX
"unix:"
#endif
#if USE_RNDW32
"w32:"
#endif
"\n");
fnc (fp, "cpu-arch:"
#if defined(HAVE_CPU_ARCH_X86)
"x86"
#elif defined(HAVE_CPU_ARCH_ALPHA)
"alpha"
#elif defined(HAVE_CPU_ARCH_SPARC)
"sparc"
#elif defined(HAVE_CPU_ARCH_MIPS)
"mips"
#elif defined(HAVE_CPU_ARCH_M68K)
"m68k"
#elif defined(HAVE_CPU_ARCH_PPC)
"ppc"
#elif defined(HAVE_CPU_ARCH_ARM)
"arm"
#endif
":\n");
fnc (fp, "mpi-asm:%s:\n", _gcry_mpi_get_hw_config ());
hwfeatures = _gcry_get_hw_features ();
fnc (fp, "hwflist:");
for (i=0; (s = _gcry_enum_hw_features (i, &afeature)); i++)
if ((hwfeatures & afeature))
fnc (fp, "%s:", s);
fnc (fp, "\n");
/* We use y/n instead of 1/0 for the simple reason that Emacsen's
compile error parser would accidentally flag that line when printed
during "make check" as an error. */
fnc (fp, "fips-mode:%c:%c:\n",
fips_mode ()? 'y':'n',
_gcry_enforced_fips_mode ()? 'y':'n' );
/* The currently used RNG type. */
{
i = _gcry_get_rng_type (0);
switch (i)
{
case GCRY_RNG_TYPE_STANDARD: s = "standard"; break;
case GCRY_RNG_TYPE_FIPS: s = "fips"; break;
case GCRY_RNG_TYPE_SYSTEM: s = "system"; break;
default: BUG ();
}
fnc (fp, "rng-type:%s:%d:\n", s, i);
}
}
/* Command dispatcher function, acting as general control
function. */
gcry_err_code_t
_gcry_vcontrol (enum gcry_ctl_cmds cmd, va_list arg_ptr)
{
static int init_finished = 0;
gcry_err_code_t rc = 0;
switch (cmd)
{
case GCRYCTL_ENABLE_M_GUARD:
_gcry_private_enable_m_guard ();
break;
case GCRYCTL_ENABLE_QUICK_RANDOM:
_gcry_set_preferred_rng_type (0);
_gcry_enable_quick_random_gen ();
break;
case GCRYCTL_FAKED_RANDOM_P:
/* Return an error if the RNG is faked one (e.g. enabled by
ENABLE_QUICK_RANDOM. */
if (_gcry_random_is_faked ())
rc = GPG_ERR_GENERAL; /* Use as TRUE value. */
break;
case GCRYCTL_DUMP_RANDOM_STATS:
_gcry_random_dump_stats ();
break;
case GCRYCTL_DUMP_MEMORY_STATS:
/*m_print_stats("[fixme: prefix]");*/
break;
case GCRYCTL_DUMP_SECMEM_STATS:
_gcry_secmem_dump_stats ();
break;
case GCRYCTL_DROP_PRIVS:
global_init ();
_gcry_secmem_init (0);
break;
case GCRYCTL_DISABLE_SECMEM:
global_init ();
no_secure_memory = 1;
break;
case GCRYCTL_INIT_SECMEM:
global_init ();
_gcry_secmem_init (va_arg (arg_ptr, unsigned int));
if ((_gcry_secmem_get_flags () & GCRY_SECMEM_FLAG_NOT_LOCKED))
rc = GPG_ERR_GENERAL;
break;
case GCRYCTL_TERM_SECMEM:
global_init ();
_gcry_secmem_term ();
break;
case GCRYCTL_DISABLE_SECMEM_WARN:
_gcry_set_preferred_rng_type (0);
_gcry_secmem_set_flags ((_gcry_secmem_get_flags ()
| GCRY_SECMEM_FLAG_NO_WARNING));
break;
case GCRYCTL_SUSPEND_SECMEM_WARN:
_gcry_set_preferred_rng_type (0);
_gcry_secmem_set_flags ((_gcry_secmem_get_flags ()
| GCRY_SECMEM_FLAG_SUSPEND_WARNING));
break;
case GCRYCTL_RESUME_SECMEM_WARN:
_gcry_set_preferred_rng_type (0);
_gcry_secmem_set_flags ((_gcry_secmem_get_flags ()
& ~GCRY_SECMEM_FLAG_SUSPEND_WARNING));
break;
case GCRYCTL_USE_SECURE_RNDPOOL:
global_init ();
_gcry_secure_random_alloc (); /* Put random number into secure memory. */
break;
case GCRYCTL_SET_RANDOM_SEED_FILE:
_gcry_set_preferred_rng_type (0);
_gcry_set_random_seed_file (va_arg (arg_ptr, const char *));
break;
case GCRYCTL_UPDATE_RANDOM_SEED_FILE:
_gcry_set_preferred_rng_type (0);
if ( fips_is_operational () )
_gcry_update_random_seed_file ();
break;
case GCRYCTL_SET_VERBOSITY:
_gcry_set_preferred_rng_type (0);
_gcry_set_log_verbosity (va_arg (arg_ptr, int));
break;
case GCRYCTL_SET_DEBUG_FLAGS:
debug_flags |= va_arg (arg_ptr, unsigned int);
break;
case GCRYCTL_CLEAR_DEBUG_FLAGS:
debug_flags &= ~va_arg (arg_ptr, unsigned int);
break;
case GCRYCTL_DISABLE_INTERNAL_LOCKING:
/* Not used anymore. */
global_init ();
break;
case GCRYCTL_ANY_INITIALIZATION_P:
if (any_init_done)
rc = GPG_ERR_GENERAL;
break;
case GCRYCTL_INITIALIZATION_FINISHED_P:
if (init_finished)
rc = GPG_ERR_GENERAL; /* Yes. */
break;
case GCRYCTL_INITIALIZATION_FINISHED:
/* This is a hook which should be used by an application after
all initialization has been done and right before any threads
are started. It is not really needed but the only way to be
really sure that all initialization for thread-safety has
been done. */
if (! init_finished)
{
global_init ();
/* Do only a basic random initialization, i.e. init the
mutexes. */
_gcry_random_initialize (0);
init_finished = 1;
/* Force us into operational state if in FIPS mode. */
(void)fips_is_operational ();
}
break;
case GCRYCTL_SET_THREAD_CBS:
/* This is now a dummy call. We used to install our own thread
library here. */
_gcry_set_preferred_rng_type (0);
global_init ();
break;
case GCRYCTL_FAST_POLL:
_gcry_set_preferred_rng_type (0);
/* We need to do make sure that the random pool is really
initialized so that the poll function is not a NOP. */
_gcry_random_initialize (1);
if ( fips_is_operational () )
_gcry_fast_random_poll ();
break;
case GCRYCTL_SET_RNDEGD_SOCKET:
#if USE_RNDEGD
_gcry_set_preferred_rng_type (0);
rc = _gcry_rndegd_set_socket_name (va_arg (arg_ptr, const char *));
#else
rc = GPG_ERR_NOT_SUPPORTED;
#endif
break;
case GCRYCTL_SET_RANDOM_DAEMON_SOCKET:
_gcry_set_preferred_rng_type (0);
_gcry_set_random_daemon_socket (va_arg (arg_ptr, const char *));
break;
case GCRYCTL_USE_RANDOM_DAEMON:
/* We need to do make sure that the random pool is really
initialized so that the poll function is not a NOP. */
_gcry_set_preferred_rng_type (0);
_gcry_random_initialize (1);
_gcry_use_random_daemon (!! va_arg (arg_ptr, int));
break;
case GCRYCTL_CLOSE_RANDOM_DEVICE:
_gcry_random_close_fds ();
break;
/* This command dumps information pertaining to the
configuration of libgcrypt to the given stream. It may be
used before the initialization has been finished but not
before a gcry_version_check. */
case GCRYCTL_PRINT_CONFIG:
{
FILE *fp = va_arg (arg_ptr, FILE *);
_gcry_set_preferred_rng_type (0);
print_config (fp?fprintf:_gcry_log_info_with_dummy_fp, fp);
}
break;
case GCRYCTL_OPERATIONAL_P:
/* Returns true if the library is in an operational state. This
is always true for non-fips mode. */
_gcry_set_preferred_rng_type (0);
if (_gcry_fips_test_operational ())
rc = GPG_ERR_GENERAL; /* Used as TRUE value */
break;
case GCRYCTL_FIPS_MODE_P:
if (fips_mode ()
&& !_gcry_is_fips_mode_inactive ()
&& !no_secure_memory)
rc = GPG_ERR_GENERAL; /* Used as TRUE value */
break;
case GCRYCTL_FORCE_FIPS_MODE:
/* Performing this command puts the library into fips mode. If
the library has already been initialized into fips mode, a
selftest is triggered. It is not possible to put the libraty
into fips mode after having passed the initialization. */
_gcry_set_preferred_rng_type (0);
if (!any_init_done)
{
/* Not yet intialized at all. Set a flag so that we are put
into fips mode during initialization. */
force_fips_mode = 1;
}
else
{
/* Already initialized. If we are already operational we
run a selftest. If not we use the is_operational call to
force us into operational state if possible. */
if (_gcry_fips_test_error_or_operational ())
_gcry_fips_run_selftests (1);
if (_gcry_fips_is_operational ())
rc = GPG_ERR_GENERAL; /* Used as TRUE value */
}
break;
case GCRYCTL_SELFTEST:
/* Run a selftest. This works in fips mode as well as in
standard mode. In contrast to the power-up tests, we use an
extended version of the selftests. Returns 0 on success or an
error code. */
global_init ();
rc = _gcry_fips_run_selftests (1);
break;
#if _GCRY_GCC_VERSION >= 40600
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wswitch"
#endif
case PRIV_CTL_INIT_EXTRNG_TEST: /* Init external random test. */
rc = GPG_ERR_NOT_SUPPORTED;
break;
case PRIV_CTL_RUN_EXTRNG_TEST: /* Run external DRBG test. */
{
struct gcry_drbg_test_vector *test =
va_arg (arg_ptr, struct gcry_drbg_test_vector *);
unsigned char *buf = va_arg (arg_ptr, unsigned char *);
if (buf)
rc = _gcry_rngdrbg_cavs_test (test, buf);
else
rc = _gcry_rngdrbg_healthcheck_one (test);
}
break;
case PRIV_CTL_DEINIT_EXTRNG_TEST: /* Deinit external random test. */
rc = GPG_ERR_NOT_SUPPORTED;
break;
case PRIV_CTL_EXTERNAL_LOCK_TEST: /* Run external lock test */
rc = external_lock_test (va_arg (arg_ptr, int));
break;
case 62: /* RFU */
break;
#if _GCRY_GCC_VERSION >= 40600
# pragma GCC diagnostic pop
#endif
case GCRYCTL_DISABLE_HWF:
{
const char *name = va_arg (arg_ptr, const char *);
rc = _gcry_disable_hw_feature (name);
}
break;
case GCRYCTL_SET_ENFORCED_FIPS_FLAG:
if (!any_init_done)
{
/* Not yet initialized at all. Set the enforced fips mode flag */
_gcry_set_preferred_rng_type (0);
_gcry_set_enforced_fips_mode ();
}
else
rc = GPG_ERR_GENERAL;
break;
case GCRYCTL_SET_PREFERRED_RNG_TYPE:
/* This may be called before gcry_check_version. */
{
int i = va_arg (arg_ptr, int);
/* Note that we may not pass 0 to _gcry_set_preferred_rng_type. */
if (i > 0)
_gcry_set_preferred_rng_type (i);
}
break;
case GCRYCTL_GET_CURRENT_RNG_TYPE:
{
int *ip = va_arg (arg_ptr, int*);
if (ip)
*ip = _gcry_get_rng_type (!any_init_done);
}
break;
case GCRYCTL_DISABLE_LOCKED_SECMEM:
_gcry_set_preferred_rng_type (0);
_gcry_secmem_set_flags ((_gcry_secmem_get_flags ()
| GCRY_SECMEM_FLAG_NO_MLOCK));
break;
case GCRYCTL_DISABLE_PRIV_DROP:
_gcry_set_preferred_rng_type (0);
_gcry_secmem_set_flags ((_gcry_secmem_get_flags ()
| GCRY_SECMEM_FLAG_NO_PRIV_DROP));
break;
case GCRYCTL_INACTIVATE_FIPS_FLAG:
case GCRYCTL_REACTIVATE_FIPS_FLAG:
rc = GPG_ERR_NOT_IMPLEMENTED;
break;
case GCRYCTL_DRBG_REINIT:
{
const char *flagstr = va_arg (arg_ptr, const char *);
gcry_buffer_t *pers = va_arg (arg_ptr, gcry_buffer_t *);
int npers = va_arg (arg_ptr, int);
if (va_arg (arg_ptr, void *) || npers < 0)
rc = GPG_ERR_INV_ARG;
+ else if (_gcry_get_rng_type (!any_init_done) != GCRY_RNG_TYPE_FIPS)
+ rc = GPG_ERR_NOT_SUPPORTED;
else
rc = _gcry_rngdrbg_reinit (flagstr, pers, npers);
}
break;
default:
_gcry_set_preferred_rng_type (0);
rc = GPG_ERR_INV_OP;
}
return rc;
}
/* Set custom allocation handlers. This is in general not useful
* because the libgcrypt allocation functions are guaranteed to
* provide proper allocation handlers which zeroize memory if needed.
* NOTE: All 5 functions should be set. */
void
_gcry_set_allocation_handler (gcry_handler_alloc_t new_alloc_func,
gcry_handler_alloc_t new_alloc_secure_func,
gcry_handler_secure_check_t new_is_secure_func,
gcry_handler_realloc_t new_realloc_func,
gcry_handler_free_t new_free_func)
{
global_init ();
if (fips_mode ())
{
/* We do not want to enforce the fips mode, but merely set a
flag so that the application may check whether it is still in
fips mode. */
_gcry_inactivate_fips_mode ("custom allocation handler");
}
alloc_func = new_alloc_func;
alloc_secure_func = new_alloc_secure_func;
is_secure_func = new_is_secure_func;
realloc_func = new_realloc_func;
free_func = new_free_func;
}
/****************
* Set an optional handler which is called in case the xmalloc functions
* ran out of memory. This handler may do one of these things:
* o free some memory and return true, so that the xmalloc function
* tries again.
* o Do whatever it like and return false, so that the xmalloc functions
* use the default fatal error handler.
* o Terminate the program and don't return.
*
* The handler function is called with 3 arguments: The opaque value set with
* this function, the requested memory size, and a flag with these bits
* currently defined:
* bit 0 set = secure memory has been requested.
*/
void
_gcry_set_outofcore_handler (int (*f)(void*, size_t, unsigned int), void *value)
{
global_init ();
if (fips_mode () )
{
log_info ("out of core handler ignored in FIPS mode\n");
return;
}
outofcore_handler = f;
outofcore_handler_value = value;
}
/* Return the no_secure_memory flag. */
static int
get_no_secure_memory (void)
{
if (!no_secure_memory)
return 0;
if (_gcry_enforced_fips_mode ())
{
no_secure_memory = 0;
return 0;
}
return no_secure_memory;
}
static gcry_err_code_t
do_malloc (size_t n, unsigned int flags, void **mem)
{
gcry_err_code_t err = 0;
void *m;
if ((flags & GCRY_ALLOC_FLAG_SECURE) && !get_no_secure_memory ())
{
if (alloc_secure_func)
m = (*alloc_secure_func) (n);
else
m = _gcry_private_malloc_secure (n);
}
else
{
if (alloc_func)
m = (*alloc_func) (n);
else
m = _gcry_private_malloc (n);
}
if (!m)
{
/* Make sure that ERRNO has been set in case a user supplied
memory handler didn't it correctly. */
if (!errno)
gpg_err_set_errno (ENOMEM);
err = gpg_err_code_from_errno (errno);
}
else
*mem = m;
return err;
}
void *
_gcry_malloc (size_t n)
{
void *mem = NULL;
do_malloc (n, 0, &mem);
return mem;
}
void *
_gcry_malloc_secure (size_t n)
{
void *mem = NULL;
do_malloc (n, GCRY_ALLOC_FLAG_SECURE, &mem);
return mem;
}
int
_gcry_is_secure (const void *a)
{
if (get_no_secure_memory ())
return 0;
if (is_secure_func)
return is_secure_func (a) ;
return _gcry_private_is_secure (a);
}
void
_gcry_check_heap( const void *a )
{
(void)a;
/* FIXME: implement this*/
#if 0
if( some_handler )
some_handler(a)
else
_gcry_private_check_heap(a)
#endif
}
void *
_gcry_realloc (void *a, size_t n)
{
void *p;
/* To avoid problems with non-standard realloc implementations and
our own secmem_realloc, we divert to malloc and free here. */
if (!a)
return _gcry_malloc (n);
if (!n)
{
xfree (a);
return NULL;
}
if (realloc_func)
p = realloc_func (a, n);
else
p = _gcry_private_realloc (a, n);
if (!p && !errno)
gpg_err_set_errno (ENOMEM);
return p;
}
void
_gcry_free (void *p)
{
int save_errno;
if (!p)
return;
/* In case ERRNO is set we better save it so that the free machinery
may not accidentally change ERRNO. We restore it only if it was
already set to comply with the usual C semantic for ERRNO. */
save_errno = errno;
if (free_func)
free_func (p);
else
_gcry_private_free (p);
if (save_errno)
gpg_err_set_errno (save_errno);
}
void *
_gcry_calloc (size_t n, size_t m)
{
size_t bytes;
void *p;
bytes = n * m; /* size_t is unsigned so the behavior on overflow is
defined. */
if (m && bytes / m != n)
{
gpg_err_set_errno (ENOMEM);
return NULL;
}
p = _gcry_malloc (bytes);
if (p)
memset (p, 0, bytes);
return p;
}
void *
_gcry_calloc_secure (size_t n, size_t m)
{
size_t bytes;
void *p;
bytes = n * m; /* size_t is unsigned so the behavior on overflow is
defined. */
if (m && bytes / m != n)
{
gpg_err_set_errno (ENOMEM);
return NULL;
}
p = _gcry_malloc_secure (bytes);
if (p)
memset (p, 0, bytes);
return p;
}
/* Create and return a copy of the null-terminated string STRING. If
it is contained in secure memory, the copy will be contained in
secure memory as well. In an out-of-memory condition, NULL is
returned. */
char *
_gcry_strdup (const char *string)
{
char *string_cp = NULL;
size_t string_n = 0;
string_n = strlen (string);
if (_gcry_is_secure (string))
string_cp = _gcry_malloc_secure (string_n + 1);
else
string_cp = _gcry_malloc (string_n + 1);
if (string_cp)
strcpy (string_cp, string);
return string_cp;
}
void *
_gcry_xmalloc( size_t n )
{
void *p;
while ( !(p = _gcry_malloc( n )) )
{
if ( fips_mode ()
|| !outofcore_handler
|| !outofcore_handler (outofcore_handler_value, n, 0) )
{
_gcry_fatal_error (gpg_err_code_from_errno (errno), NULL);
}
}
return p;
}
void *
_gcry_xrealloc( void *a, size_t n )
{
void *p;
while ( !(p = _gcry_realloc( a, n )) )
{
if ( fips_mode ()
|| !outofcore_handler
|| !outofcore_handler (outofcore_handler_value, n,
_gcry_is_secure(a)? 3:2))
{
_gcry_fatal_error (gpg_err_code_from_errno (errno), NULL );
}
}
return p;
}
void *
_gcry_xmalloc_secure( size_t n )
{
void *p;
while ( !(p = _gcry_malloc_secure( n )) )
{
if ( fips_mode ()
|| !outofcore_handler
|| !outofcore_handler (outofcore_handler_value, n, 1) )
{
_gcry_fatal_error (gpg_err_code_from_errno (errno),
_("out of core in secure memory"));
}
}
return p;
}
void *
_gcry_xcalloc( size_t n, size_t m )
{
size_t nbytes;
void *p;
nbytes = n * m;
if (m && nbytes / m != n)
{
gpg_err_set_errno (ENOMEM);
_gcry_fatal_error(gpg_err_code_from_errno (errno), NULL );
}
p = _gcry_xmalloc ( nbytes );
memset ( p, 0, nbytes );
return p;
}
void *
_gcry_xcalloc_secure( size_t n, size_t m )
{
size_t nbytes;
void *p;
nbytes = n * m;
if (m && nbytes / m != n)
{
gpg_err_set_errno (ENOMEM);
_gcry_fatal_error(gpg_err_code_from_errno (errno), NULL );
}
p = _gcry_xmalloc_secure ( nbytes );
memset ( p, 0, nbytes );
return p;
}
char *
_gcry_xstrdup (const char *string)
{
char *p;
while ( !(p = _gcry_strdup (string)) )
{
size_t n = strlen (string);
int is_sec = !!_gcry_is_secure (string);
if (fips_mode ()
|| !outofcore_handler
|| !outofcore_handler (outofcore_handler_value, n, is_sec) )
{
_gcry_fatal_error (gpg_err_code_from_errno (errno),
is_sec? _("out of core in secure memory"):NULL);
}
}
return p;
}
int
_gcry_get_debug_flag (unsigned int mask)
{
if ( fips_mode () )
return 0;
return (debug_flags & mask);
}
/* It is often useful to get some feedback of long running operations.
This function may be used to register a handler for this.
The callback function CB is used as:
void cb (void *opaque, const char *what, int printchar,
int current, int total);
Where WHAT is a string identifying the the type of the progress
output, PRINTCHAR the character usually printed, CURRENT the amount
of progress currently done and TOTAL the expected amount of
progress. A value of 0 for TOTAL indicates that there is no
estimation available.
Defined values for WHAT:
"need_entropy" X 0 number-of-bytes-required
When running low on entropy
"primegen" '\n' 0 0
Prime generated
'!'
Need to refresh the prime pool
'<','>'
Number of bits adjusted
'^'
Looking for a generator
'.'
Fermat tests on 10 candidates failed
':'
Restart with a new random value
'+'
Rabin Miller test passed
"pk_elg" '+','-','.','\n' 0 0
Only used in debugging mode.
"pk_dsa"
Only used in debugging mode.
*/
void
_gcry_set_progress_handler (void (*cb)(void *,const char*,int, int, int),
void *cb_data)
{
#if USE_DSA
_gcry_register_pk_dsa_progress (cb, cb_data);
#endif
#if USE_ELGAMAL
_gcry_register_pk_elg_progress (cb, cb_data);
#endif
_gcry_register_primegen_progress (cb, cb_data);
_gcry_register_random_progress (cb, cb_data);
}
/* This is a helper for the regression test suite to test Libgcrypt's locks.
It works using a one test lock with CMD controlling what to do:
30111 - Allocate and init lock
30112 - Take lock
30113 - Release lock
30114 - Destroy lock.
This function is used by tests/t-lock.c - it is not part of the
public API!
*/
static gpg_err_code_t
external_lock_test (int cmd)
{
GPGRT_LOCK_DEFINE (testlock);
gpg_err_code_t rc = 0;
switch (cmd)
{
case 30111: /* Init Lock. */
rc = gpgrt_lock_init (&testlock);
break;
case 30112: /* Take Lock. */
rc = gpgrt_lock_lock (&testlock);
break;
case 30113: /* Release Lock. */
rc = gpgrt_lock_unlock (&testlock);
break;
case 30114: /* Destroy Lock. */
rc = gpgrt_lock_destroy (&testlock);
break;
default:
rc = GPG_ERR_INV_OP;
break;
}
return rc;
}
diff --git a/tests/random.c b/tests/random.c
index d7a624ad..8aa730b2 100644
--- a/tests/random.c
+++ b/tests/random.c
@@ -1,591 +1,676 @@
/* random.c - part of the Libgcrypt test suite.
Copyright (C) 2005 Free Software Foundation, Inc.
This program 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 2 of the
License, or (at your option) any later version.
This program 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA. */
#ifdef HAVE_CONFIG_H
#include
#endif
#include
#include
#include
#include
#include
#ifndef HAVE_W32_SYSTEM
# include
# include
# include
#endif
#include "../src/gcrypt-int.h"
#define PGM "random"
+#ifndef DIM
+# define DIM(v) (sizeof(v)/sizeof((v)[0]))
+#endif
+
static int verbose;
static int debug;
static int with_progress;
static void
die (const char *format, ...)
{
va_list arg_ptr;
va_start (arg_ptr, format);
fputs ( PGM ": ", stderr);
vfprintf (stderr, format, arg_ptr);
va_end (arg_ptr);
exit (1);
}
static void
inf (const char *format, ...)
{
va_list arg_ptr;
va_start (arg_ptr, format);
fputs ( PGM ": ", stderr);
vfprintf (stderr, format, arg_ptr);
va_end (arg_ptr);
}
static void
print_hex (const char *text, const void *buf, size_t n)
{
const unsigned char *p = buf;
inf ("%s", text);
for (; n; n--, p++)
fprintf (stderr, "%02X", *p);
putc ('\n', stderr);
}
static void
progress_cb (void *cb_data, const char *what, int printchar,
int current, int total)
{
(void)cb_data;
inf ("progress (%s %c %d %d)\n", what, printchar, current, total);
fflush (stderr);
}
#ifndef HAVE_W32_SYSTEM
static int
writen (int fd, const void *buf, size_t nbytes)
{
size_t nleft = nbytes;
int nwritten;
while (nleft > 0)
{
nwritten = write (fd, buf, nleft);
if (nwritten < 0)
{
if (errno == EINTR)
nwritten = 0;
else
return -1;
}
nleft -= nwritten;
buf = (const char*)buf + nwritten;
}
return 0;
}
#endif /*!HAVE_W32_SYSTEM*/
#ifndef HAVE_W32_SYSTEM
static int
readn (int fd, void *buf, size_t buflen, size_t *ret_nread)
{
size_t nleft = buflen;
int nread;
while ( nleft > 0 )
{
nread = read ( fd, buf, nleft );
if (nread < 0)
{
if (nread == EINTR)
nread = 0;
else
return -1;
}
else if (!nread)
break; /* EOF */
nleft -= nread;
buf = (char*)buf + nread;
}
if (ret_nread)
*ret_nread = buflen - nleft;
return 0;
}
#endif /*!HAVE_W32_SYSTEM*/
/* Check that forking won't return the same random. */
static void
check_forking (void)
{
#ifdef HAVE_W32_SYSTEM
if (verbose)
inf ("check_forking skipped: not applicable on Windows\n");
#else /*!HAVE_W32_SYSTEM*/
pid_t pid;
int rp[2];
int i, status;
size_t nread;
char tmp1[16], tmp1c[16], tmp1p[16];
if (verbose)
inf ("checking that a fork won't cause the same random output\n");
/* We better make sure that the RNG has been initialzied. */
gcry_randomize (tmp1, sizeof tmp1, GCRY_STRONG_RANDOM);
if (verbose)
print_hex ("initial random: ", tmp1, sizeof tmp1);
if (pipe (rp) == -1)
die ("pipe failed: %s\n", strerror (errno));
pid = fork ();
if (pid == (pid_t)(-1))
die ("fork failed: %s\n", strerror (errno));
if (!pid)
{
gcry_randomize (tmp1c, sizeof tmp1c, GCRY_STRONG_RANDOM);
if (writen (rp[1], tmp1c, sizeof tmp1c))
die ("write failed: %s\n", strerror (errno));
if (verbose)
{
print_hex (" child random: ", tmp1c, sizeof tmp1c);
fflush (stdout);
}
_exit (0);
}
gcry_randomize (tmp1p, sizeof tmp1p, GCRY_STRONG_RANDOM);
if (verbose)
print_hex (" parent random: ", tmp1p, sizeof tmp1p);
close (rp[1]);
if (readn (rp[0], tmp1c, sizeof tmp1c, &nread))
die ("read failed: %s\n", strerror (errno));
if (nread != sizeof tmp1c)
die ("read too short\n");
while ( (i=waitpid (pid, &status, 0)) == -1 && errno == EINTR)
;
if (i != (pid_t)(-1)
&& WIFEXITED (status) && !WEXITSTATUS (status))
;
else
die ("child failed\n");
if (!memcmp (tmp1p, tmp1c, sizeof tmp1c))
die ("parent and child got the same random number\n");
#endif /*!HAVE_W32_SYSTEM*/
}
/* Check that forking won't return the same nonce. */
static void
check_nonce_forking (void)
{
#ifdef HAVE_W32_SYSTEM
if (verbose)
inf ("check_nonce_forking skipped: not applicable on Windows\n");
#else /*!HAVE_W32_SYSTEM*/
pid_t pid;
int rp[2];
int i, status;
size_t nread;
char nonce1[10], nonce1c[10], nonce1p[10];
if (verbose)
inf ("checking that a fork won't cause the same nonce output\n");
/* We won't get the same nonce back if we never initialized the
nonce subsystem, thus we get one nonce here and forget about
it. */
gcry_create_nonce (nonce1, sizeof nonce1);
if (verbose)
print_hex ("initial nonce: ", nonce1, sizeof nonce1);
if (pipe (rp) == -1)
die ("pipe failed: %s\n", strerror (errno));
pid = fork ();
if (pid == (pid_t)(-1))
die ("fork failed: %s\n", strerror (errno));
if (!pid)
{
gcry_create_nonce (nonce1c, sizeof nonce1c);
if (writen (rp[1], nonce1c, sizeof nonce1c))
die ("write failed: %s\n", strerror (errno));
if (verbose)
{
print_hex (" child nonce: ", nonce1c, sizeof nonce1c);
fflush (stdout);
}
_exit (0);
}
gcry_create_nonce (nonce1p, sizeof nonce1p);
if (verbose)
print_hex (" parent nonce: ", nonce1p, sizeof nonce1p);
close (rp[1]);
if (readn (rp[0], nonce1c, sizeof nonce1c, &nread))
die ("read failed: %s\n", strerror (errno));
if (nread != sizeof nonce1c)
die ("read too short\n");
while ( (i=waitpid (pid, &status, 0)) == -1 && errno == EINTR)
;
if (i != (pid_t)(-1)
&& WIFEXITED (status) && !WEXITSTATUS (status))
;
else
die ("child failed\n");
if (!memcmp (nonce1p, nonce1c, sizeof nonce1c))
die ("parent and child got the same nonce\n");
#endif /*!HAVE_W32_SYSTEM*/
}
/* Check that a closed random device os re-opened if needed. */
static void
check_close_random_device (void)
{
#ifdef HAVE_W32_SYSTEM
if (verbose)
inf ("check_close_random_device skipped: not applicable on Windows\n");
#else /*!HAVE_W32_SYSTEM*/
pid_t pid;
int i, status;
char buf[4];
if (verbose)
inf ("checking that close_random_device works\n");
gcry_randomize (buf, sizeof buf, GCRY_STRONG_RANDOM);
if (verbose)
print_hex ("parent random: ", buf, sizeof buf);
pid = fork ();
if (pid == (pid_t)(-1))
die ("fork failed: %s\n", strerror (errno));
if (!pid)
{
gcry_control (GCRYCTL_CLOSE_RANDOM_DEVICE, 0);
/* The next call will re-open the device. */
gcry_randomize (buf, sizeof buf, GCRY_STRONG_RANDOM);
if (verbose)
{
print_hex ("child random : ", buf, sizeof buf);
fflush (stdout);
}
_exit (0);
}
while ( (i=waitpid (pid, &status, 0)) == -1 && errno == EINTR)
;
if (i != (pid_t)(-1)
&& WIFEXITED (status) && !WEXITSTATUS (status))
;
else
die ("child failed\n");
#endif /*!HAVE_W32_SYSTEM*/
}
static int
rng_type (void)
{
int rngtype;
if (gcry_control (GCRYCTL_GET_CURRENT_RNG_TYPE, &rngtype))
die ("retrieving RNG type failed\n");
return rngtype;
}
static void
check_rng_type_switching (void)
{
int rngtype, initial;
char tmp1[4];
if (verbose)
inf ("checking whether RNG type switching works\n");
rngtype = rng_type ();
if (debug)
inf ("rng type: %d\n", rngtype);
initial = rngtype;
gcry_randomize (tmp1, sizeof tmp1, GCRY_STRONG_RANDOM);
if (debug)
print_hex (" sample: ", tmp1, sizeof tmp1);
if (rngtype != rng_type ())
die ("RNG type unexpectedly changed\n");
gcry_control (GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_SYSTEM);
rngtype = rng_type ();
if (debug)
inf ("rng type: %d\n", rngtype);
if (rngtype != initial)
die ("switching to System RNG unexpectedly succeeded\n");
gcry_randomize (tmp1, sizeof tmp1, GCRY_STRONG_RANDOM);
if (debug)
print_hex (" sample: ", tmp1, sizeof tmp1);
if (rngtype != rng_type ())
die ("RNG type unexpectedly changed\n");
gcry_control (GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_FIPS);
rngtype = rng_type ();
if (debug)
inf ("rng type: %d\n", rngtype);
if (rngtype != initial)
die ("switching to FIPS RNG unexpectedly succeeded\n");
gcry_randomize (tmp1, sizeof tmp1, GCRY_STRONG_RANDOM);
if (debug)
print_hex (" sample: ", tmp1, sizeof tmp1);
if (rngtype != rng_type ())
die ("RNG type unexpectedly changed\n");
gcry_control (GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_STANDARD);
rngtype = rng_type ();
if (debug)
inf ("rng type: %d\n", rngtype);
if (rngtype != GCRY_RNG_TYPE_STANDARD)
die ("switching to standard RNG failed\n");
gcry_randomize (tmp1, sizeof tmp1, GCRY_STRONG_RANDOM);
if (debug)
print_hex (" sample: ", tmp1, sizeof tmp1);
if (rngtype != rng_type ())
die ("RNG type unexpectedly changed\n");
}
static void
check_early_rng_type_switching (void)
{
int rngtype, initial;
if (verbose)
inf ("checking whether RNG type switching works in the early stage\n");
rngtype = rng_type ();
if (debug)
inf ("rng type: %d\n", rngtype);
initial = rngtype;
gcry_control (GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_SYSTEM);
rngtype = rng_type ();
if (debug)
inf ("rng type: %d\n", rngtype);
if (initial >= GCRY_RNG_TYPE_SYSTEM && rngtype != GCRY_RNG_TYPE_SYSTEM)
die ("switching to System RNG failed\n");
gcry_control (GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_FIPS);
rngtype = rng_type ();
if (debug)
inf ("rng type: %d\n", rngtype);
if (initial >= GCRY_RNG_TYPE_FIPS && rngtype != GCRY_RNG_TYPE_FIPS)
die ("switching to FIPS RNG failed\n");
gcry_control (GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_STANDARD);
rngtype = rng_type ();
if (debug)
inf ("rng type: %d\n", rngtype);
if (rngtype != GCRY_RNG_TYPE_STANDARD)
die ("switching to standard RNG failed\n");
}
+static void
+check_drbg_reinit (void)
+{
+ static struct { const char *flags; } tv[] = {
+ { NULL },
+ { "" },
+ { "sha1" },
+ { "sha1 pr" },
+ { "sha256" },
+ { "sha256 pr" },
+ { "sha512" },
+ { "sha512 pr" },
+ { "hmac sha1" },
+ { "hmac sha1 pr" },
+ { "hmac sha256" },
+ { "hmac sha256 pr" },
+ { "hmac sha512" },
+ { "hmac sha512 pr" },
+ { "aes sym128" },
+ { "aes sym128 pr" },
+ { "aes sym192" },
+ { "aes sym192 pr" },
+ { "aes sym256" },
+ { "aes sym256 pr" }
+ };
+ int tidx;
+ gpg_error_t err;
+ char pers_string[] = "I'm a doctor, not an engineer.";
+ gcry_buffer_t pers[1];
+
+ if (verbose)
+ inf ("checking DRBG_REINIT\n");
+
+ memset (pers, 0, sizeof pers);
+ pers[0].data = pers_string;
+ pers[0].len = strlen (pers_string);
+
+ err = gcry_control (GCRYCTL_DRBG_REINIT, "", NULL, 0, &err);
+ if (gpg_err_code (err) != GPG_ERR_INV_ARG)
+ die ("gcry_control(DRBG_REINIT) guard value did not work\n");
+
+ err = gcry_control (GCRYCTL_DRBG_REINIT, "", NULL, -1, NULL);
+ if (gpg_err_code (err) != GPG_ERR_INV_ARG)
+ die ("gcry_control(DRBG_REINIT) npers negative detection failed\n");
+
+ if (rng_type () != GCRY_RNG_TYPE_FIPS)
+ {
+ err = gcry_control (GCRYCTL_DRBG_REINIT, "", NULL, 0, NULL);
+ if (gpg_err_code (err) != GPG_ERR_NOT_SUPPORTED)
+ die ("DRBG_REINIT worked despite that DRBG is not active\n");
+ return;
+ }
+
+ err = gcry_control (GCRYCTL_DRBG_REINIT, "", NULL, 1, NULL);
+ if (gpg_err_code (err) != GPG_ERR_INV_ARG)
+ die ("_gcry_rngdrbg_reinit failed to detact: (!pers && npers)\n");
+ err = gcry_control (GCRYCTL_DRBG_REINIT, "", pers, 2, NULL);
+ if (gpg_err_code (err) != GPG_ERR_INV_ARG)
+ die ("_gcry_rngdrbg_reinit failed to detect: (pers && npers != 1)\n");
+
+ err = gcry_control (GCRYCTL_DRBG_REINIT, "aes sym128 bad pr ", pers, 1, NULL);
+ if (gpg_err_code (err) != GPG_ERR_INV_FLAG)
+ die ("_gcry_rngdrbg_reinit failed to detect a bad flag\n");
+
+ for (tidx=0; tidx < DIM(tv); tidx++)
+ {
+ err = gcry_control (GCRYCTL_DRBG_REINIT, tv[tidx].flags, NULL, 0, NULL);
+ if (err)
+ die ("_gcry_rngdrbg_reinit failed for \"%s\" w/o pers: %s\n",
+
+ tv[tidx].flags, gpg_strerror (err));
+ err = gcry_control (GCRYCTL_DRBG_REINIT, tv[tidx].flags, pers, 1, NULL);
+ if (err)
+ die ("_gcry_rngdrbg_reinit failed for \"%s\" with pers: %s\n",
+ tv[tidx].flags, gpg_strerror (err));
+ /* fixme: We should extract some random after each test. */
+ }
+}
+
+
/* Because we want to check initialization behaviour, we need to
fork/exec this program with several command line arguments. We use
system, so that these tests work also on Windows. */
static void
run_all_rng_tests (const char *program)
{
static const char *options[] = {
"--early-rng-check",
"--early-rng-check --prefer-standard-rng",
"--early-rng-check --prefer-fips-rng",
"--early-rng-check --prefer-system-rng",
"--prefer-standard-rng",
"--prefer-fips-rng",
"--prefer-system-rng",
NULL
};
int idx;
size_t len, maxlen;
char *cmdline;
maxlen = 0;
for (idx=0; options[idx]; idx++)
{
len = strlen (options[idx]);
if (len > maxlen)
maxlen = len;
}
maxlen += strlen (program);
maxlen += strlen (" --in-recursion --verbose --debug --progress");
maxlen++;
cmdline = malloc (maxlen + 1);
if (!cmdline)
die ("out of core\n");
for (idx=0; options[idx]; idx++)
{
if (verbose)
inf ("now running with options '%s'\n", options[idx]);
strcpy (cmdline, program);
strcat (cmdline, " --in-recursion");
if (verbose)
strcat (cmdline, " --verbose");
if (debug)
strcat (cmdline, " --debug");
if (with_progress)
strcat (cmdline, " --progress");
strcat (cmdline, " ");
strcat (cmdline, options[idx]);
if (system (cmdline))
die ("running '%s' failed\n", cmdline);
}
free (cmdline);
}
int
main (int argc, char **argv)
{
int last_argc = -1;
int early_rng = 0;
int in_recursion = 0;
const char *program = NULL;
if (argc)
{
program = *argv;
argc--; argv++;
}
else
die ("argv[0] missing\n");
while (argc && last_argc != argc )
{
last_argc = argc;
if (!strcmp (*argv, "--"))
{
argc--; argv++;
break;
}
else if (!strcmp (*argv, "--help"))
{
fputs ("usage: random [options]\n", stdout);
exit (0);
}
else if (!strcmp (*argv, "--verbose"))
{
verbose = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--debug"))
{
debug = verbose = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--progress"))
{
argc--; argv++;
with_progress = 1;
}
else if (!strcmp (*argv, "--in-recursion"))
{
in_recursion = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--early-rng-check"))
{
early_rng = 1;
argc--; argv++;
}
else if (!strcmp (*argv, "--prefer-standard-rng"))
{
/* This is anyway the default, but we may want to use it for
debugging. */
gcry_control (GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_STANDARD);
argc--; argv++;
}
else if (!strcmp (*argv, "--prefer-fips-rng"))
{
gcry_control (GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_FIPS);
argc--; argv++;
}
else if (!strcmp (*argv, "--prefer-system-rng"))
{
gcry_control (GCRYCTL_SET_PREFERRED_RNG_TYPE, GCRY_RNG_TYPE_SYSTEM);
argc--; argv++;
}
}
#ifndef HAVE_W32_SYSTEM
signal (SIGPIPE, SIG_IGN);
#endif
if (early_rng)
check_early_rng_type_switching ();
gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
if (!gcry_check_version (GCRYPT_VERSION))
die ("version mismatch\n");
if (with_progress)
gcry_set_progress_handler (progress_cb, NULL);
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
if (debug)
gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u, 0);
if (!in_recursion)
{
check_forking ();
check_nonce_forking ();
check_close_random_device ();
}
+ check_drbg_reinit ();
check_rng_type_switching ();
if (!in_recursion)
run_all_rng_tests (program);
return 0;
}