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Dig now supports selecting FIPS mode at runtime

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To enable FIPS mode at runtime use 'dig -F'.  The operating system
must have FIPS support available for this to succeed.  This is on
by default when built with --enable-fips-mode.
This commit is contained in:
Mark Andrews 2024-11-21 09:46:24 +11:00
parent 0989926745
commit fe7ce99270
3 changed files with 54 additions and 3 deletions
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2
bin/dig/Makefile.am
View File

@ -5,6 +5,7 @@ AM_CPPFLAGS += \
$(LIBDNS_CFLAGS) \
$(LIBISCCFG_CFLAGS) \
$(LIBIDN2_CFLAGS) \
$(OPENSSL_CFLAGS) \
$(LIBUV_CFLAGS) \
$(OPENSSL_CFLAGS)
@ -13,6 +14,7 @@ LDADD += \
$(LIBISC_LIBS) \
$(LIBDNS_LIBS) \
$(LIBISCCFG_LIBS) \
$(OPENSSL_LIBS) \
$(LIBIDN2_LIBS)
noinst_LTLIBRARIES = libdighost.la

49
bin/dig/dig.c
View File

@ -21,6 +21,7 @@
#include <isc/attributes.h>
#include <isc/dir.h>
#include <isc/fips.h>
#include <isc/loop.h>
#include <isc/netaddr.h>
#include <isc/parseint.h>
@ -69,6 +70,16 @@ static bool short_form = false, printcmd = true, plusquest = false,
pluscomm = false, ipv4only = false, ipv6only = false, digrc = true;
static uint32_t splitwidth = 0xffffffff;
#include <openssl/opensslv.h>
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
#include <openssl/err.h>
#include <openssl/provider.h>
#endif
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
static OSSL_PROVIDER *fips = NULL, *base = NULL;
#endif
/*% opcode text */
static const char *const opcodetext[] = {
"QUERY", "IQUERY", "STATUS", "RESERVED3",
@ -2573,8 +2584,8 @@ exit_or_usage:
/*%
* #true returned if value was used
*/
static const char *single_dash_opts = "46dhimnruv";
static const char *dash_opts = "46bcdfhikmnpqrtvyx";
static const char *single_dash_opts = "46dFhimnruv";
static const char *dash_opts = "46bcdFfhikmnpqrtvyx";
static bool
dash_option(char *option, char *next, dig_lookup_t **lookup,
bool *open_type_class, bool *need_clone, bool config_only, int argc,
@ -2631,6 +2642,9 @@ dash_option(char *option, char *next, dig_lookup_t **lookup,
debugging = true;
}
break;
case 'F': /* FIPS */
/* FIPS is handled in preparse_args() */
break;
case 'h':
help();
exit(EXIT_SUCCESS);
@ -2904,6 +2918,28 @@ preparse_args(int argc, char **argv) {
/* For debugging early startup */
debugging = true;
break;
case 'F':
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
fips = OSSL_PROVIDER_load(NULL, "fips");
if (fips == NULL) {
ERR_clear_error();
fatal("Failed to load FIPS provider");
}
base = OSSL_PROVIDER_load(NULL, "base");
if (base == NULL) {
OSSL_PROVIDER_unload(fips);
ERR_clear_error();
fatal("Failed to load base provider");
}
#endif
/* Already in FIPS mode? */
if (isc_fips_mode()) {
break;
}
if (isc_fips_set_mode(1) != ISC_R_SUCCESS) {
fatal("setting FIPS mode failed");
}
break;
case 'm':
memdebugging = true;
isc_mem_debugging = ISC_MEM_DEBUGTRACE |
@ -3428,5 +3464,14 @@ main(int argc, char **argv) {
dig_startup();
dig_shutdown();
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
if (base != NULL) {
OSSL_PROVIDER_unload(base);
}
if (fips != NULL) {
OSSL_PROVIDER_unload(fips);
}
#endif
return exitcode;
}

6
bin/dig/dig.rst
View File

@ -20,7 +20,7 @@ dig - DNS lookup utility
Synopsis
~~~~~~~~
:program:`dig` [@server] [**-b** address] [**-c** class] [**-f** filename] [**-k** filename] [**-m**] [**-p** port#] [**-q** name] [**-t** type] [**-v**] [**-x** addr] [**-y** [hmac:]name:key] [ [**-4**] | [**-6**] ] [name] [type] [class] [queryopt...]
:program:`dig` [@server] [**-b** address] [**-c** class] [**-f** filename] [**-F**] [**-k** filename] [**-m**] [**-p** port#] [**-q** name] [**-t** type] [**-v**] [**-x** addr] [**-y** [hmac:]name:key] [ [**-4**] | [**-6**] ] [name] [type] [class] [queryopt...]
:program:`dig` [**-h**]
@ -126,6 +126,10 @@ Options
same way it would be presented as a query to :program:`dig` using the
command-line interface.
.. option:: -F
This option enables FIPS mode if supported by the cryptographic library in use.
.. option:: -h
Print a usage summary.