465 lines
12 KiB
C
465 lines
12 KiB
C
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/****************************** Module Header ******************************\
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* Module Name: STDINIT.C
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*
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* This module contains functions used in the involved initiate sequence.
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*
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* Created: 3/21/91 Sanfords
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*
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* Copyright (c) 1991 Microsoft Corporation
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\***************************************************************************/
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#include "ddemlp.h"
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/*
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* WM_CREATE ClientWndProc processing
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*/
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long ClientCreate(
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HWND hwnd,
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PAPPINFO pai)
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{
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PCLIENTINFO pci;
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static DWORD defid = (DWORD)QID_SYNC;
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static XFERINFO defXferInfo = {
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&defid,
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1L,
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XTYP_CONNECT,
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DDEFMT_TEXT,
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0L,
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0L,
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};
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/*
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* allocate and initialize the client window info.
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*/
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SEMENTER();
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if(!(pci = (PCLIENTINFO)FarAllocMem(pai->hheapApp, sizeof(CLIENTINFO)))) {
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SEMLEAVE();
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SETLASTERROR(pai, DMLERR_MEMORY_ERROR);
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return(1); /* aboart creation - low memory */
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}
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SetWindowLong(hwnd, GWL_PCI, (DWORD)pci);
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SetWindowWord(hwnd, GWW_CHECKVAL, ++hwInst);
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pci->ci.pai = pai;
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// pci->ci.xad.hUser = 0L;
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pci->ci.xad.state = XST_NULL;
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pci->ci.xad.pXferInfo = &defXferInfo; //???
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pci->ci.fs = ST_CLIENT | (pai->wFlags & AWF_DEFCREATESTATE ? ST_BLOCKED : 0);
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if (GetWindowLong(GetParent(hwnd), GWL_WNDPROC) == (LONG)ConvListWndProc)
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pci->ci.fs |= ST_INLIST;
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// pci->ci.hConvPartner = NULL;
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// pci->ci.hszServerApp = NULL;
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// pci->ci.hszTopic = NULL;
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pci->pQ = NULL; /* don't create until we need one */
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pci->pClientAdvList = CreateLst(pai->hheapApp, sizeof(ADVLI));
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SEMLEAVE();
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}
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/***************************** Private Function ****************************\
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* This routine returns the hwnd of a newly created and connected DDE
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* client or NULL if failure.
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*
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* History: created 1/6/89 sanfords
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\***************************************************************************/
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HWND GetDDEClientWindow(
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PAPPINFO pai,
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HWND hwndParent,
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HWND hwndSend, // NULL -> broadcast
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HSZ hszSvc,
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ATOM aTopic,
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PCONVCONTEXT pCC)
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{
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HWND hwnd;
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PCLIENTINFO pci;
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SEMCHECKOUT();
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if(!(hwnd = CreateWindow(SZCLIENTCLASS, szNull, WS_CHILD, 0, 0, 0, 0, hwndParent,
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NULL, hInstance, &pai))) {
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return(NULL);
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}
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pci = (PCLIENTINFO)GetWindowLong(hwnd, GWL_PCI);
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SEMENTER();
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/*
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* we need to set this info BEFORE we do the synchronous initiate
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* so the INITIATEACK msg is done correctly.
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*/
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pci->ci.xad.state = XST_INIT1;
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pci->ci.xad.LastError = DMLERR_NO_ERROR;
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pci->ci.hszSvcReq = hszSvc;
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pci->ci.aServerApp = LOWORD(hszSvc);
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pci->ci.aTopic = aTopic;
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pci->ci.CC = pCC ? *pCC : CCDef;
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SEMLEAVE();
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if (hwndSend) {
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pci->hwndInit = hwndSend;
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SendMessage(hwndSend, WM_DDE_INITIATE, hwnd,
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MAKELONG((ATOM)hszSvc, aTopic));
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} else {
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IE ie = {
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hwnd, pci, aTopic
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};
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EnumWindows(InitEnum, (LONG)(IE FAR *)&ie);
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}
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if (pci->ci.xad.state == XST_INIT1) { // no connections?
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DestroyWindow(hwnd);
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return(NULL);
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}
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pci->ci.xad.state = XST_CONNECTED; // fully ready now.
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pci->ci.fs |= ST_CONNECTED;
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return(hwnd);
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}
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BOOL FAR PASCAL InitEnum(
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HWND hwnd,
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IE FAR *pie)
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{
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pie->pci->hwndInit = hwnd;
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SendMessage(hwnd, WM_DDE_INITIATE, pie->hwnd,
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MAKELONG((ATOM)pie->pci->ci.hszSvcReq, pie->aTopic));
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return((pie->pci->ci.fs & ST_INLIST) || pie->pci->ci.xad.state == XST_INIT1);
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}
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void ServerFrameInitConv(
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PAPPINFO pai,
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HWND hwndFrame,
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HWND hwndClient,
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ATOM aApp,
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ATOM aTopic)
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{
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HSZPAIR hp[2];
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PHSZPAIR php;
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DWORD dwRet;
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LPBYTE pdata;
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HWND hwndServer;
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BOOL fWild, fIsLocal, fIsSelf = FALSE;
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PCLIENTINFO pci;
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SEMCHECKOUT();
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if (pai->afCmd & CBF_FAIL_CONNECTIONS) {
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return;
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}
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/*
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* If we are filtering and no app names are registered, quit.
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*/
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if ((pai->afCmd & APPCMD_FILTERINITS) &&
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QPileItemCount(pai->pAppNamePile) == 0) {
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return;
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}
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fIsLocal = ((FARPROC)GetWindowLong(hwndClient,GWL_WNDPROC) == (FARPROC)ClientWndProc);
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if (fIsLocal) {
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pci = (PCLIENTINFO)GetWindowLong(hwndClient, GWL_PCI);
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fIsSelf = (pci->ci.pai == pai);
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/*
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* filter out inits from ourselves
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*/
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if (pai->afCmd & CBF_FAIL_SELFCONNECTIONS && fIsSelf) {
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return;
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}
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}
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hp[0].hszSvc = (HSZ)aApp;
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/*
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* filter out unwanted app names.
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*/
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if (aApp && (pai->afCmd & APPCMD_FILTERINITS) &&
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!FindPileItem(pai->pAppNamePile, CmpWORD, (LPBYTE)&aApp, 0))
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return;
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hp[0].hszTopic = aTopic;
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hp[1].hszSvc = hp[1].hszTopic = 0L;
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fWild = (hp[0].hszSvc == 0L || hp[0].hszTopic == 0L);
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dwRet = DoCallback(pai, NULL, hp[0].hszTopic,
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hp[0].hszSvc, 0, (fWild ? XTYP_WILDCONNECT : XTYP_CONNECT),
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0L, fIsLocal ? (DWORD)&pci->ci.CC : 0L, fIsSelf ? 1 : 0);
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if (dwRet == NULL)
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return;
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if (fWild) {
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pdata = GLOBALLOCK(HIWORD(dwRet));
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php = (PHSZPAIR)pdata;
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} else {
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php = &hp[0];
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pdata = NULL;
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}
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/*
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* now php points to a 0 terminated list of hszpairs to respond to.
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*/
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SEMENTER();
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while (QueryHszLength(php->hszSvc) && QueryHszLength(php->hszTopic)) {
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PSERVERINFO psi;
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SEMLEAVE();
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if ((hwndServer = CreateServerWindow(pai, (ATOM)php->hszTopic,
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fIsLocal ? &pci->ci.CC : &CCDef)) == 0)
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return;
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SEMENTER();
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/*
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* have the server respond
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*/
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psi = (PSERVERINFO)GetWindowLong(hwndServer, GWL_PCI);
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psi->ci.hConvPartner = fIsLocal ? MAKEHCONV(hwndClient) : (HCONV)hwndClient;
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psi->ci.hwndFrame = hwndFrame;
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psi->ci.fs |= ST_CONNECTED;
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if (fIsSelf) {
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psi->ci.fs |= ST_ISSELF;
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pci->ci.fs |= ST_ISSELF;
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}
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psi->ci.xad.state = XST_CONNECTED;
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psi->ci.hszSvcReq = (HSZ)aApp;
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psi->ci.aServerApp = (ATOM)php->hszSvc;
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psi->ci.aTopic = (ATOM)php->hszTopic;
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MONCONN(psi->ci.pai, psi->ci.aServerApp, psi->ci.aTopic,
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hwndClient, hwndServer, TRUE);
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IncHszCount(aApp); // for server window to keep
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IncHszCount(LOWORD(php->hszSvc));
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IncHszCount(LOWORD(php->hszTopic));
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IncHszCount(LOWORD(php->hszSvc)); // for client to remove on ack
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IncHszCount(LOWORD(php->hszTopic));
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#ifdef DEBUG
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cAtoms -= 2; // we are giving these away
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#endif
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SEMLEAVE();
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SendMessage(hwndClient, WM_DDE_ACK, hwndServer,
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MAKELONG(LOWORD(php->hszSvc), LOWORD(php->hszTopic)));
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/*
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* confirm initialization to server app - synchronously
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*/
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DoCallback(pai, MAKEHCONV(hwndServer), php->hszTopic, php->hszSvc,
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0, XTYP_CONNECT_CONFIRM, 0L, 0L, fIsSelf ? 1 : 0);
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SEMENTER();
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php++;
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}
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if (pdata) {
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GLOBALUNLOCK(HIWORD(dwRet));
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FreeDataHandle(pai, dwRet, TRUE);
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}
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SEMLEAVE();
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SEMCHECKOUT();
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}
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HWND CreateServerWindow(
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PAPPINFO pai,
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ATOM aTopic,
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PCONVCONTEXT pCC)
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{
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HWND hwndServer;
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SEMCHECKOUT();
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/*
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* make a server root window if needed....
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*/
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if (pai->hwndSvrRoot == 0) {
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/*
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* NO - make one.
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*/
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if ((pai->hwndSvrRoot = CreateWindow(SZCONVLISTCLASS, szNull, WS_CHILD,
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0, 0, 0, 0, pai->hwndDmg, NULL, hInstance, 0L)) == NULL) {
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SETLASTERROR(pai, DMLERR_SYS_ERROR);
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return(NULL);
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}
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}
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/*
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* Create the server window
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*/
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if ((hwndServer = CreateWindow(SZSERVERCLASS, szNull, WS_CHILD,
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0, 0, 0, 0, pai->hwndSvrRoot, NULL, hInstance, &pai)) == NULL) {
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SETLASTERROR(pai, DMLERR_SYS_ERROR);
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return(NULL);
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}
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((PSERVERINFO)GetWindowLong(hwndServer, GWL_PCI))->ci.CC = *pCC;
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return(hwndServer);
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}
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/*
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* WM_CREATE ServerWndProc processing
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*/
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long ServerCreate(
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HWND hwnd,
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PAPPINFO pai)
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{
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PSERVERINFO psi;
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/*
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* allocate and initialize the server window info.
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*/
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SEMENTER();
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if (!(psi = (PSERVERINFO)FarAllocMem(pai->hheapApp, sizeof(SERVERINFO)))) {
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SETLASTERROR(pai, DMLERR_MEMORY_ERROR);
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return(1);
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}
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SEMLEAVE();
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psi->ci.pai = pai;
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// psi->ci.xad.hUser = 0L;
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psi->ci.xad.state = XST_NULL;
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psi->ci.fs = pai->wFlags & AWF_DEFCREATESTATE ? ST_BLOCKED : 0;
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SetWindowLong(hwnd, GWL_PCI, (DWORD)psi);
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SetWindowWord(hwnd, GWW_CHECKVAL, ++hwInst);
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return(0);
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}
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/*
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* Client response to a WM_DDE_ACK message when ACK to INITIATE expected.
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*/
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BOOL ClientInitAck(hwnd, pci, hwndServer, aApp, aTopic)
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HWND hwnd;
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PCLIENTINFO pci;
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HWND hwndServer;
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ATOM aApp;
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ATOM aTopic;
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{
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HWND hwndClient;
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PCLIENTINFO pciNew;
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#ifdef DEBUG
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cAtoms += 2; // the incomming atoms need to be accounted for.
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#endif
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SEMCHECKOUT();
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switch (pci->ci.xad.state) {
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case XST_INIT1:
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/*
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* first one back... lock in!
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*/
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pci->ci.xad.state = XST_INIT2;
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MONCONN(pci->ci.pai, aApp, aTopic, hwnd, hwndServer, TRUE);
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if (GetWindowLong(hwndServer, GWL_WNDPROC) == (LONG)ServerWndProc) {
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pci->ci.fs |= ST_ISLOCAL;
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pci->ci.hConvPartner = MAKEHCONV(hwndServer);
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} else {
|
||
|
|
pci->ci.hConvPartner = (HCONV)hwndServer;
|
||
|
|
if (aApp == aProgmanHack) {
|
||
|
|
// PROGMAN HACK!!!!
|
||
|
|
IncHszCount(aApp);
|
||
|
|
IncHszCount(aTopic);
|
||
|
|
#ifdef DEBUG
|
||
|
|
cAtoms -= 2;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
pci->ci.aServerApp = aApp;
|
||
|
|
pci->ci.aTopic = aTopic;
|
||
|
|
if (!pci->ci.hwndFrame) // remember the frame this was sent to.
|
||
|
|
pci->ci.hwndFrame = pci->hwndInit;
|
||
|
|
IncHszCount(LOWORD(pci->ci.hszSvcReq)); // keep this for ourselves
|
||
|
|
break;
|
||
|
|
|
||
|
|
|
||
|
|
case XST_INIT2:
|
||
|
|
|
||
|
|
// Extra ack...
|
||
|
|
|
||
|
|
// throw away if from our partner or if we are not in a list.
|
||
|
|
if (hwndServer == (HWND)pci->ci.hConvPartner ||
|
||
|
|
GetParent(hwnd) == pci->ci.pai->hwndDmg) {
|
||
|
|
Abort:
|
||
|
|
TRACETERM((szT, "ClientInitAck: Extra ack terminate: %x->%x\n", hwndServer, hwnd));
|
||
|
|
PostMessage(hwndServer, WM_DDE_TERMINATE, hwnd, 0L);
|
||
|
|
FreeHsz(aApp);
|
||
|
|
FreeHsz(aTopic);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (GetWindowLong(hwndServer, GWL_WNDPROC) != (LONG)ServerWndProc) {
|
||
|
|
|
||
|
|
// Non Local Extra Ack... terminate and attempt reconnection.
|
||
|
|
|
||
|
|
TRACETERM((szT, "ClientInitAck: Extra ack terminate and reconnect: %x->%x\n", hwndServer, hwnd));
|
||
|
|
PostMessage(hwndServer, WM_DDE_TERMINATE, hwnd, 0L);
|
||
|
|
GetDDEClientWindow(pci->ci.pai, GetParent(hwnd),
|
||
|
|
pci->hwndInit, aApp, aTopic, &pci->ci.CC);
|
||
|
|
|
||
|
|
// PROGMAN HACK!!!!
|
||
|
|
if (aApp != aProgmanHack) {
|
||
|
|
FreeHsz(aApp);
|
||
|
|
FreeHsz(aTopic);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
// Local Extra Ack... create a client window, set it up to be talking
|
||
|
|
// to the server window and tell the server window to change
|
||
|
|
// partners.
|
||
|
|
|
||
|
|
|
||
|
|
hwndClient = CreateWindow(SZCLIENTCLASS, szNull, WS_CHILD,
|
||
|
|
0, 0, 0, 0, GetParent(hwnd), NULL, hInstance, &(pci->ci.pai));
|
||
|
|
|
||
|
|
if (!hwndClient) {
|
||
|
|
SETLASTERROR(pci->ci.pai, DMLERR_SYS_ERROR);
|
||
|
|
goto Abort;
|
||
|
|
}
|
||
|
|
|
||
|
|
pciNew = (PCLIENTINFO)GetWindowLong(hwndClient, GWL_PCI);
|
||
|
|
pciNew->ci.xad.state = XST_CONNECTED;
|
||
|
|
pciNew->ci.xad.LastError = DMLERR_NO_ERROR;
|
||
|
|
pciNew->ci.aServerApp = aApp;
|
||
|
|
pciNew->ci.hszSvcReq = pci->ci.hszSvcReq;
|
||
|
|
IncHszCount(LOWORD(pciNew->ci.hszSvcReq));
|
||
|
|
pciNew->ci.aTopic = aTopic;
|
||
|
|
pciNew->ci.hConvPartner = MAKEHCONV(hwndServer);
|
||
|
|
pciNew->ci.hwndFrame = pci->hwndInit;
|
||
|
|
pciNew->ci.fs |= ST_CONNECTED | ST_ISLOCAL;
|
||
|
|
MONCONN(pciNew->ci.pai, aApp, aTopic, hwnd, hwndServer, TRUE);
|
||
|
|
SendMessage(hwndServer, UMSR_CHGPARTNER, hwndClient, 0L);
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return(TRUE);
|
||
|
|
}
|
||
|
|
|