From 1298f83aa49948962b57dc302cc868130b60c0b5 Mon Sep 17 00:00:00 2001
From: Mounir IDRASSI <mounir.idrassi@idrix.fr>
Date: Thu, 3 Oct 2019 19:25:57 +0200
Subject: Windows: Add function RandinitWithCheck to detect if random generator
 was already initialized before our call or not

---
 src/Common/Random.c | 14 +++++++++++++-
 src/Common/Random.h |  1 +
 2 files changed, 14 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/Common/Random.c b/src/Common/Random.c
index a2da77f8..09c55bf3 100644
--- a/src/Common/Random.c
+++ b/src/Common/Random.c
@@ -94,14 +94,21 @@ HCRYPTPROV hCryptProv;
 
 
 /* Init the random number generator, setup the hooks, and start the thread */
-int Randinit ()
+int RandinitWithCheck ( int* pAlreadyInitialized)
 {
 	DWORD dwLastError = ERROR_SUCCESS;
 	if (GetMaxPkcs5OutSize() > RNG_POOL_SIZE)
 		TC_THROW_FATAL_EXCEPTION;
 
 	if(bRandDidInit)
+	{
+		if (pAlreadyInitialized)
+			*pAlreadyInitialized = 1;
 		return 0;
+	}
+
+	if (pAlreadyInitialized)
+		*pAlreadyInitialized = 0;
 
 	InitializeCriticalSection (&critRandProt);
 
@@ -153,6 +160,11 @@ error:
 	return 1;
 }
 
+int Randinit ()
+{
+	return RandinitWithCheck (NULL);
+}
+
 /* Close everything down, including the thread which is closed down by
    setting a flag which eventually causes the thread function to exit */
 void RandStop (BOOL freePool)
diff --git a/src/Common/Random.h b/src/Common/Random.h
index 46fe59a8..88dd041b 100644
--- a/src/Common/Random.h
+++ b/src/Common/Random.h
@@ -35,6 +35,7 @@ extern "C" {
 
 void RandAddInt ( unsigned __int32 x );
 int Randinit ( void );
+int RandinitWithCheck ( int* pAlreadyInitialized);
 void RandStop (BOOL freePool);
 BOOL IsRandomNumberGeneratorStarted ();
 void RandSetHashFunction ( int hash_algo_id );
-- 
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