#include <time.h>
#include "cryptlib.h"
#include <openssl/rand.h>
+#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
+#endif
-static ENGINE *rand_engine=NULL;
+#ifndef OPENSSL_NO_ENGINE
+/* non-NULL if default_RAND_meth is ENGINE-provided */
+static ENGINE *funct_ref =NULL;
+#endif
+static const RAND_METHOD *default_RAND_meth = NULL;
-#if 0
-void RAND_set_rand_method(RAND_METHOD *meth)
- {
- rand_meth=meth;
- }
-#else
-int RAND_set_rand_method(ENGINE *engine)
+int RAND_set_rand_method(const RAND_METHOD *meth)
{
- ENGINE *mtmp;
- mtmp = rand_engine;
- if (engine && !ENGINE_init(engine))
- return 0;
- rand_engine = engine;
- /* SHOULD ERROR CHECK THIS!!! */
- if(mtmp)
- ENGINE_finish(mtmp);
+#ifndef OPENSSL_NO_ENGINE
+ if(funct_ref)
+ {
+ ENGINE_finish(funct_ref);
+ funct_ref = NULL;
+ }
+#endif
+ default_RAND_meth = meth;
return 1;
}
-#endif
const RAND_METHOD *RAND_get_rand_method(void)
{
- if (rand_engine == NULL
- && (rand_engine = ENGINE_get_default_RAND()) == NULL)
+ if (!default_RAND_meth)
{
- RANDerr(RAND_F_RAND_GET_RAND_METHOD,ERR_LIB_ENGINE);
- return NULL;
+#ifndef OPENSSL_NO_ENGINE
+ ENGINE *e = ENGINE_get_default_RAND();
+ if(e)
+ {
+ default_RAND_meth = ENGINE_get_RAND(e);
+ if(!default_RAND_meth)
+ {
+ ENGINE_finish(e);
+ e = NULL;
+ }
+ }
+ if(e)
+ funct_ref = e;
+ else
+#endif
+ default_RAND_meth = RAND_SSLeay();
+ }
+ return default_RAND_meth;
+ }
+
+#ifndef OPENSSL_NO_ENGINE
+int RAND_set_rand_engine(ENGINE *engine)
+ {
+ const RAND_METHOD *tmp_meth = NULL;
+ if(engine)
+ {
+ if(!ENGINE_init(engine))
+ return 0;
+ tmp_meth = ENGINE_get_RAND(engine);
+ if(!tmp_meth)
+ {
+ ENGINE_finish(engine);
+ return 0;
+ }
}
- return ENGINE_get_RAND(rand_engine);
+ /* This function releases any prior ENGINE so call it first */
+ RAND_set_rand_method(tmp_meth);
+ funct_ref = engine;
+ return 1;
}
+#endif
void RAND_cleanup(void)
{
const RAND_METHOD *meth = RAND_get_rand_method();
if (meth && meth->cleanup)
meth->cleanup();
+ RAND_set_rand_method(NULL);
}
void RAND_seed(const void *buf, int num)