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/********************************************************************************************
Clean OS Windows library module version 1.2.1.
This module is part of the Clean Object I/O library, version 1.2.1,
for the Windows platform.
********************************************************************************************/
/********************************************************************************************
About this module:
TCP event handling is done in the dedicated window class TCPWindowClassName instead of
the ghMainWindow in cCrossCall_121.c. The handle to this window instance is ghTCPWindow.
TCP events are sent by the routines in cTCP_121.c to ghMainWindow. The window procedure
of ghMainWindow passes these events on to ghTCPWindow.
********************************************************************************************/
//#include "cCrossCallTCP_121.h"
#include "cCrossCall_121.h"
// Global data with external references:
DNSInfo *DNSInfoList = NULL;
/* Registered Windows tcp window class name.
*/
static char TCPWindowClassName[] = "__CleanTCPWindow"; /* Class for TCP child window of ghMainWindow. */
/* This function is used for looking up an element with a matching dnsHdl-field in
the DNSInfoList. This element will then be removed from the list.
*/
static void lookUpAndRemove(WPARAM dnsHdl,DNSInfo **listPtr,DNSInfo **elPtr)
{
if ((WPARAM)(*listPtr)->dnsHdl==dnsHdl)
{ // the object to look up has been found, so remove it from the list
// and give it back via elPtr.
*elPtr = *listPtr;
*listPtr = (*listPtr)->next;
}
else
lookUpAndRemove(dnsHdl, &(*listPtr)->next, elPtr);
}
/* The callback routine for a TCP window (extracted from MainWindowProcedure).
It handles only PM_SOCKET_EVENT and PM_DNS_EVENT.
*/
static LRESULT CALLBACK TCPWindowProcedure (HWND hWin, UINT uMess, WPARAM wPara, LPARAM lPara)
{
switch (uMess)
{
case PM_SOCKET_EVENT:
{
// wPara is the socket handle
// LOWORD(lPara) is the message
// HIWORD(lPara) is an error code
switch (LOWORD(lPara))
{ case FD_OOB:
case FD_READ: SendMessage3ToClean(CcWmINETEVENT,IE_RECEIVED, wPara,
RChanReceiver);
break;
case FD_WRITE: SendMessage3ToClean(CcWmINETEVENT,IE_SENDABLE, wPara,
SChanReceiver);
break;
case FD_ACCEPT: SendMessage3ToClean(CcWmINETEVENT,IE_CONNECTREQUEST, wPara,
ListenerReceiver);
break;
case FD_CONNECT:SendMessage3ToClean(
CcWmINETEVENT,
HIWORD(lPara)==0 ? IE_ASYNCCONNECTCOMPLETE :
IE_ASYNCCONNECTFAILED,
wPara,
ConnectReceiver);
break;
case FD_CLOSE: {
/*dictitem *pDictitem;
pDictitem = lookup(wPara);
if (pDictitem) {
if (pDictitem->hasReceiveNotifier)
SendMessage3ToClean(CcWmINETEVENT,IE_EOM, wPara,
RChanReceiver);
if (pDictitem->hasSendableNotifier && HIWORD(lPara)!=0)
SendMessage3ToClean(CcWmINETEVENT,IE_DISCONNECTED, wPara,
SChanReceiver);
};*/
};
break;
};
return 0;
};
break;
case PM_DNS_EVENT:
{ // wPara contains the DNS handle (the handle created by WSAAsyncGetHostByName
// The IP-adress of the looked up host will have been written into the
// corresponding element of the DNSInfoList. Look it up:
struct DNSInfo *elPtr;
int errCode;
errCode = HIWORD(lPara);
lookUpAndRemove(wPara,&DNSInfoList,&elPtr);
// *elPtr contains the info
SendMessage4ToClean( CcWmINETEVENT,
errCode ? IE_IPADDRESSNOTFOUND :
IE_IPADDRESSFOUND,
elPtr->dnsHdl,
DNSReceiver,
errCode ?
0 :
ntohl(((int*)(*(elPtr->junion.Hostent.h_addr_list)))[0])
);
// deallocate unused memory
LocalFree(elPtr);
return 0;
};
break;
default:
return DefWindowProc (hWin, uMess, wPara, lPara);
break;
}
return 0;
} /* TCPWindowProcedure */
/* Register the TCPWindow class:
*/
void InitialiseCrossCallTCP (void)
{
WNDCLASSEX wclass;
/* register tcp window class */
wclass.cbSize = sizeof (WNDCLASSEX);
wclass.style = CS_NOCLOSE;
wclass.lpfnWndProc = (WNDPROC) TCPWindowProcedure;
wclass.cbClsExtra = 0;
wclass.cbWndExtra = 0;
wclass.hInstance = ghInst;
wclass.hIcon = LoadIcon (ghInst, IDI_APPLICATION);
wclass.hCursor = LoadCursor (ghInst, IDC_ARROW);
wclass.hbrBackground = NULL;
wclass.lpszMenuName = NULL;
wclass.lpszClassName = TCPWindowClassName;
wclass.hIconSm = NULL;
RegisterClassEx (&wclass);
}
/* Cross call procedure implementations.
Eval<nr> corresponds with a CrossCallEntry generated by NewCrossCallEntry (nr,Eval<nr>).
*/
void EvalCcRqCREATETCPWINDOW (CrossCallInfo *pcci) /* No cross call args; no result. */
{
ghTCPWindow = CreateWindow (TCPWindowClassName, /* Class name */
"", /* Window title */
WS_POPUP, /* style flags */
0, 0, /* x, y */
0, 0, /* width, height */
NULL, /* Parent window */
(HMENU) NULL, /* menu handle */
(HANDLE) ghInst, /* Instance that owns the window */
0
);
MakeReturn0Cci (pcci);
}
void InstallCrossCallTCP ()
{
CrossCallProcedureTable newTable;
InitialiseCrossCallTCP ();
newTable = EmptyCrossCallProcedureTable ();
AddCrossCallEntry (newTable, CcRqCREATETCPWINDOW,EvalCcRqCREATETCPWINDOW);
AddCrossCallEntries (gCrossCallProcedureTable, newTable);
}
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