Check-in [25849c5ac1]
Overview
Comment:Added digest unstack channel command
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SHA3-256: 25849c5ac19d2e6f28221677c27c36b6507c59a050fc3213686b95679461904f
User & Date: bohagan on 2023-10-30 01:19:56
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Context
2023-10-30
01:37
Added digest HMAC key test cases check-in: 862db54236 user: bohagan tags: crypto
01:19
Added digest unstack channel command check-in: 25849c5ac1 user: bohagan tags: crypto
2023-10-29
22:50
Updated documentation for HMAC key option check-in: 92ad9d0c97 user: bohagan tags: crypto
Changes
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	DigestFree(statePtr);
	return TCL_ERROR;
    }

    Tcl_SetResult(interp, (char *) Tcl_GetChannelName(chan), TCL_VOLATILE);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Unstack Channel --
 *
 *	This procedure is invoked to process the "unstack" TCL command.
 *	See the user documentation for details on what it does.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Removes transform from channel or sets result to error message.
 *
 *----------------------------------------------------------------------
 */
static int
UnstackObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    Tcl_Channel chan;
    int mode; /* OR-ed combination of TCL_READABLE and TCL_WRITABLE  */

    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channel");
	return TCL_ERROR;
    }

    /* Get channel */
    chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), &mode);
    if (chan == (Tcl_Channel) NULL) {
	return TCL_ERROR;
    }

    /* Make sure to operate on the topmost channel */
    chan = Tcl_GetTopChannel(chan);

    /* Check if digest channel */
    if (Tcl_GetChannelType(chan) != &digestChannelType) {
	Tcl_AppendResult(interp, "bad channel \"", Tcl_GetChannelName(chan),
	    "\": not a digest channel", NULL);
	Tcl_SetErrorCode(interp, "TLS", "UNSTACK", "CHANNEL", "INVALID", (char *) NULL);
	return TCL_ERROR;
    }

    /* Pop transform from channel, leaves error info in interp result */
    if (Tcl_UnstackChannel(interp, chan) == TCL_ERROR) {
	return TCL_ERROR;
    }
    return TCL_OK;
    	clientData = clientData;
}

/*******************************************************************/

/*
 *-------------------------------------------------------------------
 *
 * DigestHashFunction --
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 */
int Tls_DigestCommands(Tcl_Interp *interp) {
    Tcl_CreateObjCommand(interp, "tls::digest", DigestObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::md4", DigestMD4Cmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::md5", DigestMD5Cmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::sha1", DigestSHA1Cmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::sha256", DigestSHA256Cmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::unstack", UnstackObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    return TCL_OK;
}