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/*
* Copyright (C) 1997-1999 Matt Newman <matt@novadigm.com>
*
* $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tls.c,v 1.8 2000/08/14 21:55:12 hobbs Exp $
* $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tls.c,v 1.9 2000/08/15 00:02:08 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
*
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if ((dh->p == NULL) || (dh->g == NULL))
return(NULL);
return(dh);
}
#endif
/*
* Defined in Tls_Init to determine what kind of channels we are using
* (old-style 8.2.0-8.3.1 or new-style 8.3.2+).
*/
int channelTypeVersion;
/*
* We lose the tcl password callback when we use the RSA BSAFE SSL-C 1.1.2
* libraries instead of the current OpenSSL libraries.
*/
#ifdef BSAFE
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return TCL_ERROR;
}
chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), NULL);
if (chan == (Tcl_Channel) NULL) {
return TCL_ERROR;
}
#ifdef TCL_CHANNEL_VERSION_2
/*
* Make sure to operate on the topmost channel
*/
chan = Tcl_GetTopChannel(chan);
if (channelTypeVersion == TLS_CHANNEL_VERSION_2) {
/*
* Make sure to operate on the topmost channel
*/
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);
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return TCL_ERROR;
}
chan = Tcl_GetChannel(interp, Tcl_GetStringFromObj(objv[1], NULL), NULL);
if (chan == (Tcl_Channel) NULL) {
return TCL_ERROR;
}
#ifdef TCL_CHANNEL_VERSION_2
/*
* Make sure to operate on the topmost channel
*/
chan = Tcl_GetTopChannel(chan);
if (channelTypeVersion == TLS_CHANNEL_VERSION_2) {
/*
* Make sure to operate on the topmost channel
*/
chan = Tcl_GetTopChannel(chan);
#endif
}
for (idx = 2; idx < objc; idx++) {
char *opt = Tcl_GetStringFromObj(objv[idx], NULL);
if (opt[0] != '-')
break;
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if (model != NULL) {
int mode;
/* Get the "model" context */
chan = Tcl_GetChannel(interp, model, &mode);
if (chan == (Tcl_Channel) NULL) {
return TCL_ERROR;
}
#ifdef TCL_CHANNEL_VERSION_2
/*
* Make sure to operate on the topmost channel
*/
chan = Tcl_GetTopChannel(chan);
if (channelTypeVersion == TLS_CHANNEL_VERSION_2) {
/*
* Make sure to operate on the topmost channel
*/
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);
ctx = statePtr->ctx;
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/*
* We need to make sure that the channel works in binary (for the
* encryption not to get goofed up).
* We only want to adjust the buffering in pre-v2 channels, where
* each channel in the stack maintained its own buffers.
*/
Tcl_SetChannelOption(interp, chan, "-translation", "binary");
#ifndef TCL_CHANNEL_VERSION_2
Tcl_SetChannelOption(interp, chan, "-buffering", "none");
if (channelTypeVersion == TLS_CHANNEL_VERSION_1) {
Tcl_SetChannelOption(interp, chan, "-buffering", "none");
#endif
#if TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION < 2
}
statePtr->parent = chan;
statePtr->self = Tcl_ReplaceChannel(interp,
Tls_ChannelType(), (ClientData) statePtr,
(TCL_READABLE | TCL_WRITABLE), statePtr->parent);
#else
#ifdef TCL_CHANNEL_VERSION_2
statePtr->self = Tcl_StackChannel(interp, Tls_ChannelType(),
(ClientData) statePtr, (TCL_READABLE | TCL_WRITABLE), chan);
#else
statePtr->self = chan;
Tcl_StackChannel( interp, Tls_ChannelType(), (ClientData) statePtr,
(TCL_READABLE | TCL_WRITABLE), chan);
if (channelTypeVersion == TLS_CHANNEL_VERSION_2) {
statePtr->self = Tcl_StackChannel(interp, Tls_ChannelType(),
(ClientData) statePtr, (TCL_READABLE | TCL_WRITABLE), chan);
} else {
statePtr->self = chan;
Tcl_StackChannel(interp, Tls_ChannelType(),
(ClientData) statePtr, (TCL_READABLE | TCL_WRITABLE), chan);
#endif
#endif
}
if (statePtr->self == (Tcl_Channel) NULL) {
/*
* No use of Tcl_EventuallyFree because no possible Tcl_Preserve.
*/
Tls_Free((char *) statePtr);
return TCL_ERROR;
}
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}
channelName = Tcl_GetStringFromObj(objv[1], NULL);
chan = Tcl_GetChannel(interp, channelName, &mode);
if (chan == (Tcl_Channel) NULL) {
return TCL_ERROR;
}
#ifdef TCL_CHANNEL_VERSION_2
/*
* Make sure to operate on the topmost channel
*/
chan = Tcl_GetTopChannel(chan);
if (channelTypeVersion == TLS_CHANNEL_VERSION_2) {
/*
* Make sure to operate on the topmost channel
*/
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);
peer = SSL_get_peer_certificate(statePtr->ssl);
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*-------------------------------------------------------------------
*/
int
Tls_Init(Tcl_Interp *interp) /* Interpreter in which the package is
* to be made available. */
{
int major, minor, release, serial;
#if TCL_MAJOR_VERSION >= 8 && TCL_MINOR_VERSION >= 2
/*
* The original 8.2.0 stacked channel implementation (and the patch
* that preceded it) had problems with scalability and robustness.
* These were address in 8.3.2 / 8.4a2, so we now require that as a
* minimum for TLS 1.4+.
* minimum for TLS 1.4+. We only support 8.2+ now (8.3.2+ preferred).
*/
if (
#ifdef USE_TCL_STUBS
if (Tcl_InitStubs(interp, "8.3.2", 0) == NULL) {
Tcl_InitStubs(interp, "8.2", 0)
#else
Tcl_PkgRequire(interp, "Tcl", "8.2", 0)
#endif
== NULL) {
return TCL_ERROR;
}
#endif
/*
* Get the version so we can runtime switch on available functionality.
* TLS should really only be used in 8.3.2+, but the other works for
* some limited functionality, so an attempt at support is made.
*/
Tcl_GetVersion(&major, &minor, &release, &serial);
if ((major > 8) || ((major == 8) && ((minor > 3) || ((minor == 3) &&
(release == TCL_FINAL_RELEASE) && (serial >= 2))))) {
/* 8.3.2+ */
channelTypeVersion = TLS_CHANNEL_VERSION_2;
} else {
/* 8.2.0 - 8.3.1 */
channelTypeVersion = TLS_CHANNEL_VERSION_1;
}
if (SSL_library_init() != 1) {
Tcl_AppendResult(interp, "could not initialize SSL library", NULL);
return TCL_ERROR;
}
SSL_load_error_strings();
ERR_load_crypto_strings();
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