Check-in [8ae6d68bc3]
Overview
Comment:Removed obsolete unstack commands from digest and encrypt modules.
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SHA3-256: 8ae6d68bc3cb5c8376a561d9a6845efb1f54a1f3a73658edec3d2c4c6640386e
User & Date: bohagan on 2024-05-19 21:56:20
Other Links: branch diff | manifest | tags
Context
2024-05-20
02:10
Corrected tlsRand.c file header check-in: cf6fddaa41 user: bohagan tags: crypto
2024-05-19
21:56
Removed obsolete unstack commands from digest and encrypt modules. check-in: 8ae6d68bc3 user: bohagan tags: crypto
20:54
Ensure minimum buffer size for encryption channel. check-in: 986ea5b483 user: bohagan tags: crypto
Changes
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    }

    /* Set result to channel Id */
    Tcl_SetResult(interp, (char *) Tcl_GetChannelName(chan), TCL_VOLATILE);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Unstack Channel --
 *
 *	This function removes the stacked channel from the top of the
 *	channel stack if it is a digest channel.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Removes transform from channel or sets result to error message.
 *
 *----------------------------------------------------------------------
 */
static int DigestUnstackObjCmd(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  */
    (void) clientData;

    dprintf("Called");

    /* Validate arg count */
    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channelId");
	return TCL_ERROR;
    }

    /* Get channel */
    chan = Tcl_GetChannel(interp, Tcl_GetString(objv[1]), &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", (char *) NULL);
	Tcl_SetErrorCode(interp, "TLS", "UNSTACK", "CHANNEL", "INVALID", (char *) NULL);
	return TCL_ERROR;
    }

    /* Pop transform from channel */
    return Tcl_UnstackChannel(interp, chan);
}

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

/*
 *-------------------------------------------------------------------
 *
 * DigestInstanceObjCmd --
 *
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    Tcl_CreateObjCommand(interp, "::tls::hmac", HMACObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "::tls::mac", MACObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "::tls::md4", MD4ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "::tls::md5", MD5ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "::tls::sha1", SHA1ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "::tls::sha256", SHA256ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "::tls::sha512", SHA512ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "::tls::unstack", DigestUnstackObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    return TCL_OK;
}

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    dprintf("Created channel named %s", Tcl_GetChannelName(statePtr->self));

    /* Set result to channel Id */
    Tcl_SetResult(interp, (char *) Tcl_GetChannelName(statePtr->self), TCL_VOLATILE);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Unstack Channel --
 *
 *	This function removes the stacked channel from the top of the
 *	channel stack if it is a encryption channel.
 *
 * Returns:
 *	TCL_OK or TCL_ERROR
 *
 * Side effects:
 *	Removes transform from channel or sets result to error message.
 *
 *----------------------------------------------------------------------
 */
static int EncryptUnstackObjCmd(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  */
    (void) clientData;

    dprintf("Called");

    /* Validate arg count */
    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "channelId");
	return TCL_ERROR;
    }

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

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

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

    /* Pop transform from channel */
    return Tcl_UnstackChannel(interp, chan);
}

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

/*
 *-------------------------------------------------------------------
 *
 * EncryptInstanceObjCmd --
 *
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 *	Creates commands
 *
 *-------------------------------------------------------------------
 */
int Tls_EncryptCommands(Tcl_Interp *interp) {
    Tcl_CreateObjCommand(interp, "::tls::encrypt", EncryptObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "::tls::decrypt", DecryptObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "::tls::unstack2", EncryptUnstackObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    return TCL_OK;
}