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OPENSSL_info(): add the item OPENSSL_INFO_SEED_SOURCE and use it

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'openssl version -r' prints the seed source based on compiler macros.
This does not necessarily reflect the library's idea of what seed
sources to use, so we reimplement the list of seed sources as a
OPENSSL_info() item and display that instead.

Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9689)
This commit is contained in:
Richard Levitte 2019-08-24 12:40:10 +02:00
parent b5a276884b
commit 096978f099
5 changed files with 85 additions and 35 deletions
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7
apps/info.c
View File

@ -14,7 +14,7 @@
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_CONFIGDIR, OPT_ENGINESDIR, OPT_MODULESDIR, OPT_DSOEXT, OPT_DIRNAMESEP,
OPT_LISTSEP
OPT_LISTSEP, OPT_SEEDS
} OPTION_CHOICE;
const OPTIONS info_options[] = {
@ -30,6 +30,7 @@ const OPTIONS info_options[] = {
{"dsoext", OPT_DSOEXT, '-', "Configured extension for modules"},
{"dirnamesep", OPT_DIRNAMESEP, '-', "Directory-filename separator"},
{"listsep", OPT_LISTSEP, '-', "List separator character"},
{"seeds", OPT_SEEDS, '-', "Seed sources"},
{NULL}
};
@ -74,6 +75,10 @@ opthelp:
type = OPENSSL_INFO_LIST_SEPARATOR;
dirty++;
break;
case OPT_SEEDS:
type = OPENSSL_INFO_SEED_SOURCE;
dirty++;
break;
}
}
if (opt_num_rest() != 0) {

36
apps/version.c
View File

@ -157,40 +157,8 @@ opthelp:
printf("%s\n", OpenSSL_version(OPENSSL_ENGINES_DIR));
if (moddir)
printf("%s\n", OpenSSL_version(OPENSSL_MODULES_DIR));
if (seed) {
printf("Seeding source:");
#ifdef OPENSSL_RAND_SEED_RTDSC
printf(" rtdsc");
#endif
#ifdef OPENSSL_RAND_SEED_RDCPU
printf(" rdrand ( rdseed rdrand )");
#endif
#ifdef OPENSSL_RAND_SEED_LIBRANDOM
printf(" C-library-random");
#endif
#ifdef OPENSSL_RAND_SEED_GETRANDOM
printf(" getrandom-syscall");
#endif
#ifdef OPENSSL_RAND_SEED_DEVRANDOM
{
static const char *dev[] = { DEVRANDOM, NULL };
printlist(" random-device", dev);
}
#endif
#ifdef OPENSSL_RAND_SEED_EGD
{
static const char *dev[] = { DEVRANDOM_EGD, NULL };
printlist(" EGD", dev);
}
#endif
#ifdef OPENSSL_RAND_SEED_NONE
printf(" none");
#endif
#ifdef OPENSSL_RAND_SEED_OS
printf(" os-specific");
#endif
printf("\n");
}
if (seed)
printf("Seeding source: %s\n", OPENSSL_info(OPENSSL_INFO_SEED_SOURCE));
ret = 0;
end:
return ret;

71
crypto/info.c
View File

@ -11,9 +11,78 @@
#include <openssl/crypto.h>
#include "internal/dso_conf.h"
#include "e_os.h"
#include "buildinf.h"
#include "internal/thread_once.h"
static char *seed_sources = NULL;
static CRYPTO_ONCE init_info = CRYPTO_ONCE_STATIC_INIT;
DEFINE_RUN_ONCE_STATIC(init_info_strings)
{
{
static char seeds[512] = "";
#define add_seeds_string(str) \
do { \
if (seeds[0] != '\0') \
OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \
OPENSSL_strlcat(seeds, str, sizeof(seeds)); \
} while (0)
#define add_seeds_stringlist(label, strlist) \
do { \
add_seeds_string(label "("); \
{ \
const char *dev[] = strlist; \
int first = 1; \
\
for (; *dev != NULL; dev++) { \
if (!first) \
OPENSSL_strlcat(seeds, " ", sizeof(seeds)); \
first = 0; \
OPENSSL_strlcat(seeds, *dev, sizeof(seeds)); \
} \
} \
OPENSSL_strlcat(seeds, ")", sizeof(seeds)); \
} while (0)
#ifdef OPENSSL_RAND_SEED_NONE
add_seeds_string("none");
#endif
#ifdef OPENSSL_RAND_SEED_RTDSC
add_seeds_string("stdsc");
#endif
#ifdef OPENSSL_RAND_SEED_RDCPU
add_seeds_string("rdrand ( rdseed rdrand )");
#endif
#ifdef OPENSSL_RAND_SEED_LIBRANDOM
add_seeds_string("C-library-random");
#endif
#ifdef OPENSSL_RAND_SEED_GETRANDOM
add_seeds_string("getrandom-syscall");
#endif
#ifdef OPENSSL_RAND_SEED_DEVRANDOM
add_seeds_stringlist("random-device", { DEVRANDOM, NULL });
#endif
#ifdef OPENSSL_RAND_SEED_EGD
add_seeds_stringlist("EGD", { DEVRANDOM_EGD, NULL });
#endif
#ifdef OPENSSL_RAND_SEED_OS
add_seeds_string("os-specific");
#endif
seed_sources = seeds;
}
return 1;
}
const char *OPENSSL_info(int t)
{
/*
* We don't care about the result. Worst case scenario, the strings
* won't be initialised, i.e. remain NULL, which means that the info
* isn't available anyway...
*/
(void)RUN_ONCE(&init_info, init_info_strings);
switch (t) {
case OPENSSL_INFO_CONFIG_DIR:
return OPENSSLDIR;
@ -36,6 +105,8 @@ const char *OPENSSL_info(int t)
static const char list_sep[] = { LIST_SEPARATOR_CHAR, '\0' };
return list_sep;
}
case OPENSSL_INFO_SEED_SOURCE:
return seed_sources;
default:
break;
}

5
doc/man1/openssl-info.pod
View File

@ -14,6 +14,7 @@ B<openssl info>
[B<-dsoext>]
[B<-dirfilesep>]
[B<-listsep]>
[B<-seeds]>
=head1 DESCRIPTION
@ -62,6 +63,10 @@ Outputs the OpenSSL list separator character.
This is typically used to construct C<$PATH> (C<%PATH%> on Windows)
style lists.
=item B<-seeds>
Outputs the randomness seed sources.
=back
=head1 HISTORY

1
include/openssl/crypto.h
View File

@ -181,6 +181,7 @@ const char *OPENSSL_info(int type);
# define OPENSSL_INFO_DSO_EXTENSION 1004
# define OPENSSL_INFO_DIR_FILENAME_SEPARATOR 1005
# define OPENSSL_INFO_LIST_SEPARATOR 1006
# define OPENSSL_INFO_SEED_SOURCE 1007
int OPENSSL_issetugid(void);