* Side effects:
 *	Frees all the state
 *
 *-------------------------------------------------------------------
 */
void Tls_Clean(State *statePtr) {
    dprintf("Called");

    if (statePtr->ssl) {
	/* Send close_notify message */
	dprintf("SSL_shutdown(%p)", statePtr->ssl);
	SSL_shutdown(statePtr->ssl);
    }

    /*
     * we're assuming here that we're single-threaded
     */
    if (statePtr->timer != (Tcl_TimerToken) NULL) {
	Tcl_DeleteTimerHandler(statePtr->timer);
	statePtr->timer = NULL;
    }

    if (statePtr->protos) {
	ckfree(statePtr->protos);
	statePtr->protos = NULL;
    }
    if (statePtr->bio) {
	/* This will call SSL_shutdown. Bug 1414045 */
    /* Remove callbacks */
	dprintf("BIO_free_all(%p)", statePtr->bio);
	BIO_free_all(statePtr->bio);
	statePtr->bio = NULL;
    }
    if (statePtr->ssl) {
	dprintf("SSL_free(%p)", statePtr->ssl);
	SSL_free(statePtr->ssl);
	statePtr->ssl = NULL;
    }
    if (statePtr->ctx) {
	SSL_CTX_free(statePtr->ctx);
	statePtr->ctx = NULL;
    }
    if (statePtr->callback) {
	Tcl_DecrRefCount(statePtr->callback);
	statePtr->callback = NULL;
    }
    if (statePtr->password) {
	Tcl_DecrRefCount(statePtr->password);
	statePtr->password = NULL;
    }
    if (statePtr->vcmd) {
	Tcl_DecrRefCount(statePtr->vcmd);
	statePtr->vcmd = NULL;
    }

    if (statePtr->protos) {
	ckfree(statePtr->protos);
	statePtr->protos = NULL;
    }

    if (statePtr->bio) {
	/* This will call SSL_shutdown. Bug 1414045 */
	dprintf("BIO_free_all(%p)", statePtr->bio);
	BIO_free_all(statePtr->bio);
	statePtr->bio = NULL;
    }

    if (statePtr->ssl) {
	dprintf("SSL_free(%p)", statePtr->ssl);
	SSL_free(statePtr->ssl);
	statePtr->ssl = NULL;
    }

    if (statePtr->ctx) {
	SSL_CTX_free(statePtr->ctx);
	statePtr->ctx = NULL;
    }

    dprintf("Returning");
}

/*
 *----------------------------------------------------------------------
 *

    }
    return TCL_OK;
}

/*
 *------------------------------------------------------*
 *
 *	TlsLibInit --
 * TlsLibShutdown --
 *
 *	Shutdown SSL library once per application
 *
 * Results:
 *	A standard TCL result
 *
 * Side effects:
 *	Shutdown SSL library
 *
 *	------------------------------------------------*
 *	Initializes SSL library once per application
 *	------------------------------------------------*
 *------------------------------------------------------*
 */
static int TlsLibShutdown(ClientData clientData) {
    BIO_cleanup();
    return TCL_OK;
}

/*
 *------------------------------------------------------*
 *
 *	Side effects:
 *		initializes SSL library
 *	TlsLibInit --
 *
 *	Initializes SSL library once per application
 *
 *	Result:
 *		none
 * Results:
 *	A standard Tcl result
 *
 * Side effects:
 *	Initializes SSL library
 *
 *------------------------------------------------------*
 */
static int TlsLibInit() {
    static int initialized = 0;

    dprintf("Called");

    if (!initialized) {
	/* Initialize BOTH libcrypto and libssl. */
	if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS
	    | OPENSSL_INIT_ADD_ALL_CIPHERS | OPENSSL_INIT_ADD_ALL_DIGESTS
	    | OPENSSL_INIT_LOAD_CONFIG | OPENSSL_INIT_ASYNC, NULL)) {
	    return TCL_ERROR;
	}

	/* Create BIO handlers */
	if (BIO_new_tcl(NULL, 0) == NULL) {
	BIO_new_tcl(NULL, 0);
	    return TCL_ERROR;
	}
	
	/* Create exit handler */
	Tcl_CreateExitHandler(TlsLibShutdown, NULL);
	initialized = 1;
    }
    return TCL_OK;
}

/* Init script */
static const char tlsTclInitScript[] = {
#include "tls.tcl.h"
};

/*
 *-------------------------------------------------------------------
 *
 * Tls_Init --
 *
 *	This is a package initialization procedure, which is called
 *	by Tcl when this package is to be added to an interpreter.
 *	by TCL when this package is to be added to an interpreter.
 *
 * Results:  Ssl configured and loaded
 * Results:
 *	Initializes structures and creates commands.
 *
 * Side effects:
 *	 create the ssl command, initialize ssl context
 *	 Create the commands
 *
 *-------------------------------------------------------------------
 */

#if TCL_MAJOR_VERSION > 8
#define MIN_VERSION "9.0"
#else

	return TCL_ERROR;
    }

    return Tcl_PkgProvide(interp, PACKAGE_NAME, PACKAGE_VERSION);
}

/*
 *------------------------------------------------------*
 *-------------------------------------------------------------------
 *
 *	Tls_SafeInit --
 *
 *	------------------------------------------------*
 *	Standard procedure required by 'load'.
 *	This is a package initialization procedure for safe interps.
 *	Initializes this extension for a safe interpreter.
 *	------------------------------------------------*
 *
 *	Side effects:
 *		As of 'Tls_Init'
 * Results:
 *	Same as of 'Tls_Init'
 *
 * Side effects:
 *	Result:
 *	Same as of 'Tls_Init'
 *		A standard Tcl error code.
 *
 *------------------------------------------------------*
 *-------------------------------------------------------------------
 */
DLLEXPORT int Tls_SafeInit(Tcl_Interp *interp) {
    dprintf("Called");
    return Tls_Init(interp);
}