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deps: add -no_rand_screen to openssl s_client

In openssl s_client on Windows, RAND_screen() is invoked to initialize
random state but it takes several seconds in each connection.
This added -no_rand_screen to openssl s_client on Windows to skip
RAND_screen() and gets a better performance in the unit test of
test-tls-server-verify.
Do not enable this except to use in the unit test.

Fixes: #1461
PR-URL: #1836
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
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Shigeki Ohtsu authored and MylesBorins committed May 27, 2015
1 parent eb30387 commit f2121a858375fc1caf913c9f0758f88cfc50fa84
Showing with 20 additions and 2 deletions.
  1. +10 −1 deps/openssl/openssl/apps/app_rand.c
  2. +10 −1 deps/openssl/openssl/apps/s_client.c
@@ -124,7 +124,16 @@ int app_RAND_load_file(const char *file, BIO *bio_e, int dont_warn)
char buffer[200];
#ifdef OPENSSL_SYS_WINDOWS
RAND_screen();
/*
* allocate 2 to dont_warn not to use RAND_screen() via
* -no_rand_screen option in s_client
*/
if (dont_warn != 2) {
BIO_printf(bio_e, "Loading 'screen' into random state -");
BIO_flush(bio_e);
RAND_screen();
BIO_printf(bio_e, " done\n");
}
#endif
if (file == NULL)
@@ -236,6 +236,7 @@ static BIO *bio_c_msg = NULL;
static int c_quiet = 0;
static int c_ign_eof = 0;
static int c_brief = 0;
static int c_no_rand_screen = 0;
#ifndef OPENSSL_NO_PSK
/* Default PSK identity and key */
@@ -451,6 +452,10 @@ static void sc_usage(void)
" -keymatexport label - Export keying material using label\n");
BIO_printf(bio_err,
" -keymatexportlen len - Export len bytes of keying material (default 20)\n");
#ifdef OPENSSL_SYS_WINDOWS
BIO_printf(bio_err,
" -no_rand_screen - Do not use RAND_screen() to initialize random state\n");
#endif
}
#ifndef OPENSSL_NO_TLSEXT
@@ -1144,6 +1149,10 @@ int MAIN(int argc, char **argv)
keymatexportlen = atoi(*(++argv));
if (keymatexportlen == 0)
goto bad;
#ifdef OPENSSL_SYS_WINDOWS
} else if (strcmp(*argv, "-no_rand_screen") == 0) {
c_no_rand_screen = 1;
#endif
} else {
BIO_printf(bio_err, "unknown option %s\n", *argv);
badop = 1;
@@ -1260,7 +1269,7 @@ int MAIN(int argc, char **argv)
if (!load_excert(&exc, bio_err))
goto end;
if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
if (!app_RAND_load_file(NULL, bio_err, ++c_no_rand_screen) && inrand == NULL
&& !RAND_status()) {
BIO_printf(bio_err,
"warning, not much extra random data, consider using the -rand option\n");

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