Time value for various platforms.
authorDr. Stephen Henson <steve@openssl.org>
Wed, 16 Oct 2013 13:27:55 +0000 (14:27 +0100)
committerDr. Stephen Henson <steve@openssl.org>
Sun, 20 Oct 2013 21:07:36 +0000 (22:07 +0100)
The function gettimeofday() is not supported on all platforms. Use
more portable versions. Adapted from FIPS code.

crypto/rand/md_rand.c

index d479aa8..2d6a55f 100644 (file)
 #include <assert.h>
 #include <stdio.h>
 #include <string.h>
-#include <sys/time.h>
 
 #include "e_os.h"
 
+#if !(defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYSNAME_DSPBIOS))
+# include <sys/time.h>
+#endif
+#if defined(OPENSSL_SYS_VXWORKS)
+# include <time.h>
+#endif
+
 #include <openssl/crypto.h>
 #include <openssl/rand.h>
 #include "rand_lcl.h"
@@ -361,10 +367,27 @@ static int ssleay_rand_bytes(unsigned char *buf, int num, int pseudo)
        pid_t curr_pid = getpid();
 #endif
        time_t curr_time = time(NULL);
-       struct timeval tv;
        int do_stir_pool = 0;
-
+/* time value for various platforms */
+#ifdef OPENSSL_SYS_WIN32
+       FILETIME tv;
+# ifdef _WIN32_WCE
+       SYSTEMTIME t;
+       GetSystemTime(&t);
+       SystemTimeToFileTime(&t, &tv);
+# else
+       GetSystemTimeAsFileTime(&tv);
+# endif
+#elif defined(OPENSSL_SYS_VXWORKS)
+       struct timespec tv;
+       clock_gettime(CLOCK_REALTIME, &ts);
+#elif defined(OPENSSL_SYSNAME_DSPBIOS)
+       unsigned long long tv, OPENSSL_rdtsc();
+       tv = OPENSSL_rdtsc();
+#else
+       struct timeval tv;
        gettimeofday(&tv, NULL);
+#endif
 
 #ifdef PREDICT
        if (rand_predictable)
@@ -504,14 +527,10 @@ static int ssleay_rand_bytes(unsigned char *buf, int num, int pseudo)
                        if (!MD_Update(&m,(unsigned char*)&curr_time,
                                       sizeof curr_time))
                                goto err;
-                       curr_time = 0;
-                       }
-               if (tv.tv_sec) /* just in the first iteration to save time */
-                       {
                        if (!MD_Update(&m,(unsigned char*)&tv,
                                       sizeof tv))
                                goto err;
-                       tv.tv_sec = 0;
+                       curr_time = 0;
                        }
                if (!MD_Update(&m,local_md,MD_DIGEST_LENGTH))
                        goto err;