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static int TlsCloseProc _ANSI_ARGS_((ClientData instanceData, Tcl_Interp *interp));
static int TlsInputProc _ANSI_ARGS_((ClientData instanceData, char *buf, int bufSize, int *errorCodePtr));
static int TlsOutputProc _ANSI_ARGS_((ClientData instanceData, CONST char *buf, int toWrite, int *errorCodePtr));
static int TlsGetOptionProc _ANSI_ARGS_((ClientData instanceData, Tcl_Interp *interp, CONST84 char *optionName, Tcl_DString *dsPtr));
static void TlsWatchProc _ANSI_ARGS_((ClientData instanceData, int mask));
static int TlsGetHandleProc _ANSI_ARGS_((ClientData instanceData, int direction, ClientData *handlePtr));
static int TlsNotifyProc _ANSI_ARGS_((ClientData instanceData, int mask));
#if 0
static void TlsChannelHandler _ANSI_ARGS_((ClientData clientData, int mask));
#endif
static Tcl_ChannelType *tlsChannelType = NULL;
static const Tcl_ChannelType tlsChannelType = {
"tls", /* typeName */
TCL_CHANNEL_VERSION_2, /* version */
TlsCloseProc, /* closeProc */
TlsInputProc, /* inputProc */
TlsOutputProc, /* outputProc */
0, /* seekProc */
0, /* setOptionProc */
TlsGetOptionProc, /* getOptionProc */
TlsWatchProc, /* watchProc */
TlsGetHandleProc, /* getHandleProc */
NULL, /* close2Proc */
TlsBlockModeProc, /* blockModeProc */
0, /* flushProc */
TlsNotifyProc /* handlerProc */
};
/*
*-------------------------------------------------------------------
*
* Tls_ChannelType --
*
* Return the correct TLS channel driver info
*
* Results:
* The correct channel driver for the current version of Tcl.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
Tcl_ChannelType *Tls_ChannelType(void) {
unsigned int size;
/*
* Initialize the channel type if necessary
*/
if (tlsChannelType == NULL) {
/*
* Allocation of a new channeltype structure is not easy, because of
* the various verson of the core and subsequent changes to the
* structure. The main challenge is to allocate enough memory for
* modern versions even if this extsension is compiled against one
* of the older variant!
*
* (1) Versions before stubs (8.0.x) are simple, because they are
* supported only if the extension is compiled against exactly
* that version of the core.
*
* (2) With stubs we just determine the difference between the older
* and modern variant and overallocate accordingly if compiled
* against an older variant.
*/
size = sizeof(Tcl_ChannelType); /* Base size */
tlsChannelType = (Tcl_ChannelType *) ckalloc(size);
memset((VOID *) tlsChannelType, 0, size);
/*
* Common elements of the structure (no changes in location or name)
* close2Proc, seekProc, setOptionProc stay NULL.
*/
tlsChannelType->typeName = "tls";
tlsChannelType->closeProc = TlsCloseProc;
tlsChannelType->inputProc = TlsInputProc;
tlsChannelType->outputProc = TlsOutputProc;
tlsChannelType->getOptionProc = TlsGetOptionProc;
tlsChannelType->watchProc = TlsWatchProc;
tlsChannelType->getHandleProc = TlsGetHandleProc;
/*
* Compiled against 8.3.2+. Direct access to all elements possible. Use
* channelTypeVersion information to select the values to use.
*/
/*
* For the 8.3.2 core we present ourselves as a version 2
* driver. This means a special value in version (ex
* blockModeProc), blockModeProc in a different place and of
* course usage of the handlerProc.
*/
tlsChannelType->version = TCL_CHANNEL_VERSION_2;
tlsChannelType->blockModeProc = TlsBlockModeProc;
tlsChannelType->handlerProc = TlsNotifyProc;
}
return(tlsChannelType);
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* TCL_WRITABLE and TCL_EXCEPTION. */
{
Tcl_Channel downChan;
State *statePtr = (State *) instanceData;
dprintf("TlsWatchProc(0x%x)", mask);
/* Pretend to be dead as long as the verify callback is running.
/* Pretend to be dead as long as the verify callback is running.
* Otherwise that callback could be invoked recursively. */
if (statePtr->flags & TLS_TCL_CALLBACK) {
dprintf("Callback is on-going, doing nothing");
return;
}
dprintFlags(statePtr);
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*
* TlsGetHandleProc --
*
* Called from Tcl_GetChannelFile to retrieve o/s file handler
* from the SSL socket based channel.
*
* Results:
* The appropriate Tcl_File or NULL if not present.
* The appropriate Tcl_File or NULL if not present.
*
* Side effects:
* None.
*
*-------------------------------------------------------------------
*/
static int TlsGetHandleProc(ClientData instanceData, int direction, ClientData *handlePtr) {
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* Notify the upper channel of the current BIO state so the event
* continues to propagate up the chain.
*
* stanton: It looks like this could result in an infinite loop if
* the upper channel doesn't cause ChannelHandler to be removed
* before Tcl_NotifyChannel calls channel handlers on the lower channel.
*/
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