/*
 * Copyright (C) 1997-1999 Matt Newman <[email protected]>
 * some modifications:
 *	Copyright (C) 2000 Ajuba Solutions
 *	Copyright (C) 2002 ActiveState Corporation
 *	Copyright (C) 2004 Starfish Systems 
 *
 * $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tls.c,v 1.37 2015/07/07 17:16:02 andreas_kupries Exp $
 *
 * TLS (aka SSL) Channel - can be layered on any bi-directional
 * Tcl_Channel (Note: Requires Trf Core Patch)
 *
 * This was built (almost) from scratch based upon observation of
 * OpenSSL 0.9.2B
 *
 * Addition credit is due for Andreas Kupries ([email protected]), for

{
    int i;
    char rnd_seed[16] = "GrzSlplKqUdnnzP!";	/* 16 bytes */
    int status=TCL_OK;
#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
    size_t num_locks;

    if (!initialized) {
    if (initialized) {
        return status;
    }
	Tcl_MutexLock(&init_mx);
	if (!initialized) {
	    initialized = 1;
#else
       {
#endif

	    if (CRYPTO_set_mem_functions((void *(*)(size_t))Tcl_Alloc,
					 (void *(*)(void *, size_t))Tcl_Realloc,
					 (void(*)(void *))Tcl_Free) == 0) {
	       /* Not using Tcl's mem functions ... not critical */
	    }

	    do {
		for (i = 0; i < 16; i++) {
		    rnd_seed[i] = 1 + (char) (255.0 * rand()/(RAND_MAX+1.0));
		}
		RAND_seed(rnd_seed, sizeof(rnd_seed));
	    } while (RAND_status() != 1);
	}

    	done:
done:

#if defined(OPENSSL_THREADS) && defined(TCL_THREADS)
	Tcl_MutexUnlock(&init_mx);
#endif
    }
    return status;
}