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/*
* Copyright (C) 1997-2000 Matt Newman <matt@novadigm.com>
*
* $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tlsInt.h,v 1.5 2000/06/06 01:34:12 welch Exp $
*
* TLS (aka SSL) Channel - can be layered on any bi-directional
* Tcl_Channel (Note: Requires Trf Core Patch)
*
* This was built from scratch based upon observation of OpenSSL 0.9.2B
*
* Addition credit is due for Andreas Kupries (a.kupries@westend.com), for
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/*
* Copyright (C) 1997-2000 Matt Newman <matt@novadigm.com>
*
* $Header: /home/rkeene/tmp/cvs2fossil/../tcltls/tls/tls/tlsInt.h,v 1.6 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 from scratch based upon observation of OpenSSL 0.9.2B
*
* Addition credit is due for Andreas Kupries (a.kupries@westend.com), for
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* This structure describes the per-instance state
* of an ssl channel.
*
* The SSL processing context is maintained here, in the ClientData
*/
typedef struct State {
Tcl_Channel self; /* this socket channel */
#if TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION < 2
Tcl_Channel parent; /* underlying channel */
#endif
Tcl_TimerToken timer;
int flags; /* currently only CHANNEL_ASYNC */
int watchMask; /* current WatchProc mask */
int mode; /* current mode of parent channel */
Tcl_Interp *interp; /* interpreter in which this resides */
Tcl_Obj *callback; /* script called for tracing, verifying and errors */
int vflags; /* verify flags */
SSL *ssl; /* Struct for SSL processing */
SSL_CTX *ctx; /* SSL Context */
BIO *bio; /* Struct for SSL processing */
BIO *p_bio; /* Parent BIO (that is layered on Tcl_Channel) */
char *err;
} State;
/*
* Forward declarations
*/
EXTERN Tcl_ChannelType *Tls_ChannelType _ANSI_ARGS_((void));
EXTERN Tcl_Channel Tls_GetParent _ANSI_ARGS_((State *statePtr));
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* This structure describes the per-instance state
* of an ssl channel.
*
* The SSL processing context is maintained here, in the ClientData
*/
typedef struct State {
Tcl_Channel self; /* this socket channel */
Tcl_TimerToken timer;
int flags; /* currently only CHANNEL_ASYNC */
int watchMask; /* current WatchProc mask */
int mode; /* current mode of parent channel */
Tcl_Interp *interp; /* interpreter in which this resides */
Tcl_Obj *callback; /* script called for tracing, verifying and errors */
int vflags; /* verify flags */
SSL *ssl; /* Struct for SSL processing */
SSL_CTX *ctx; /* SSL Context */
BIO *bio; /* Struct for SSL processing */
BIO *p_bio; /* Parent BIO (that is layered on Tcl_Channel) */
char *err;
} State;
/*
* The following definitions have to be usable for 8.0.x, 8.1.x, 8.2.x,
* 8.3.[01], 8.3.2 and beyond. The differences between these versions:
*
* 8.0-8.1: There is no support for these in TLS 1.4 (get 1.3). This
* was the version with the original patch.
*
* 8.2.0- Changed semantics for Tcl_StackChannel (Tcl_ReplaceChannel).
* 8.3.1: Check at runtime to switch the behaviour. The patch is part
* of the core from now on.
*
* 8.3.2+: Stacked channels rewritten for better behaviour in some
* situations (closing). Some new API's, semantic changes.
*
* The following magic was taken from Trf 2.1 (Kupries).
*/
#define TLS_CHANNEL_VERSION_1 0x1
#define TLS_CHANNEL_VERSION_2 0x2
extern int channelTypeVersion;
#ifdef USE_TCL_STUBS
#ifndef Tcl_StackChannel
/*
* The core we are compiling against is not patched, so supply the
* necesssary definitions here by ourselves. The form chosen for
* the procedure macros (reservedXXX) will notify us if the core
* does not have these reserved locations anymore.
*
* !! Synchronize the procedure indices in their definitions with
* the patch to tcl.decls, as they have to be the same.
*/
/* 281 */
typedef Tcl_Channel (tls_StackChannel) _ANSI_ARGS_((Tcl_Interp* interp,
Tcl_ChannelType* typePtr,
ClientData instanceData,
int mask,
Tcl_Channel prevChan));
/* 282 */
typedef void (tls_UnstackChannel) _ANSI_ARGS_((Tcl_Interp* interp,
Tcl_Channel chan));
#define Tcl_StackChannel ((tls_StackChannel*) tclStubsPtr->reserved281)
#define Tcl_UnstackChannel ((tls_UnstackChannel*) tclStubsPtr->reserved282)
#endif /* Tcl_StackChannel */
#ifndef Tcl_GetStackedChannel
/*
* Separate definition, available in 8.2, but not 8.1 and before !
*/
/* 283 */
typedef Tcl_Channel (tls_GetStackedChannel) _ANSI_ARGS_((Tcl_Channel chan));
#define Tcl_GetStackedChannel ((tls_GetStackedChannel*) tclStubsPtr->reserved283)
#endif /* Tcl_GetStackedChannel */
#ifndef Tcl_WriteRaw
/*
* Core is older than 8.3.2. Supply the missing definitions for
* the new API's in 8.3.2.
*/
/* 394 */
typedef int (tls_ReadRaw) _ANSI_ARGS_((Tcl_Channel chan, char *dst,
int bytesToRead));
/* 395 */
typedef int (tls_WriteRaw) _ANSI_ARGS_((Tcl_Channel chan, char *src,
int srcLen));
/* 397 */
typedef int (tls_GetTopChannel) _ANSI_ARGS_((Tcl_Channel chan));
/*
* Generating code for accessing these parts of the stub table when
* compiling against a core older than 8.3.2 is a hassle because even
* the 'reservedXXX' fields of the structure are not defined yet. So
* we have to write up some macros hiding some very hackish pointer
* arithmetics to get at these fields. We assume that pointer to
* functions are always of the same size.
*/
#define STUB_BASE ((char*)(&(tclStubsPtr->tcl_UtfNcasecmp))) /* field 370 */
#define procPtrSize (sizeof (Tcl_DriverBlockModeProc *))
#define IDX(n) (((n)-370) * procPtrSize)
#define SLOT(n) (STUB_BASE + IDX(n))
#define Tcl_ReadRaw (*((tls_ReadRaw**) (SLOT(394))))
#define Tcl_WriteRaw (*((tls_WriteRaw**) (SLOT(395))))
#define Tcl_GetTopChannel (*((tls_GetTopChannel**)(SLOT(396))))
typedef struct TlsChannelTypeVersion_* TlsChannelTypeVersion;
#define TCL_CHANNEL_VERSION_2 ((TlsChannelTypeVersion) 0x2)
/*
* Required, easy emulation.
*/
#define Tcl_ChannelGetOptionProc(chanDriver) ((chanDriver)->getOptionProc)
#endif /* Tcl_WriteRaw */
#endif /* USE_TCL_STUBS */
/*
* Forward declarations
*/
EXTERN Tcl_ChannelType *Tls_ChannelType _ANSI_ARGS_((void));
EXTERN Tcl_Channel Tls_GetParent _ANSI_ARGS_((State *statePtr));
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