/*
 * Copyright (C) 1997-1999 Matt Newman <matt@novadigm.com>
 *
 * $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tls.c,v 1.6.2.2 2000/07/21 05:32:56 hobbs 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
 *

 */

/*
 * Forward declarations
 */

#define F2N( key, dsp) \
	(((key) == NULL) ? (char *) NULL : \
		Tcl_TranslateFileName(interp, (key), (dsp)))
#define REASON()	ERR_reason_error_string(ERR_get_error())

static int	CiphersObjCmd _ANSI_ARGS_ ((ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));

static int	HandshakeObjCmd _ANSI_ARGS_ ((ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));

static int	ImportObjCmd _ANSI_ARGS_ ((ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));

static int	StatusObjCmd _ANSI_ARGS_ ((ClientData clientData,
			Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]));
static SSL_CTX *CTX_Init _ANSI_ARGS_((Tcl_Interp *interp, int proto, char *key,
			char *cert, char *CAdir, char *CAfile, char *ciphers));

#define TLS_PROTO_SSL2	0x01
#define TLS_PROTO_SSL3	0x02
#define TLS_PROTO_TLS1	0x04
#define ENABLED(flag, mask)	(((flag) & (mask)) == (mask))

/*
 * Static data structures
 */

#ifndef NO_DH
/* from openssl/apps/s_server.c */

    chan = Tcl_GetTopChannel(chan);
#endif
    if (Tcl_GetChannelType(chan) != Tls_ChannelType()) {
        Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
                "\": not a TLS channel", NULL);
        return TCL_ERROR;
    }
    statePtr = (State *)Tcl_GetChannelInstanceData(chan);

    if (!SSL_is_init_finished(statePtr->ssl)) {
	int err;
	ret = Tls_WaitForConnect(statePtr, &err);
	if (ret < 0) {
	    char *errStr = statePtr->err;
	    Tcl_ResetResult(interp);
	    Tcl_SetErrno(err);

	    if (!errStr || *errStr == 0) {
	        errStr = Tcl_PosixError(interp);
	    }

	    Tcl_AppendResult(interp, "handshake failed: ", errStr,
		    (char *) NULL);
	    return TCL_ERROR;
	}
    }
    Tcl_SetObjResult(interp, Tcl_NewIntObj(ret));
    return TCL_OK;
}


 *	Frees all the state
 *
 *-------------------------------------------------------------------
 */
void
Tls_Clean(State *statePtr)
{
    /*
     * we're assuming here that we're single-threaded
     */

    if (statePtr->timer != (Tcl_TimerToken) NULL) {
	Tcl_DeleteTimerHandler(statePtr->timer);
	statePtr->timer = NULL;
    }

    if (statePtr->ssl) {
	SSL_shutdown(statePtr->ssl);
	SSL_free(statePtr->ssl);
	statePtr->ssl = NULL;
    }
    if (statePtr->callback) {
	Tcl_DecrRefCount(statePtr->callback);
	statePtr->callback = NULL;
    }





}

/*
 *-------------------------------------------------------------------
 *
 * Tls_Init --
 *