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disphelper.c
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/* This file is the compacted single file version of the DispHelper COM helper library.
* DispHelper allows you to call COM objects with an extremely simple printf style syntax.
* DispHelper can be used from C++ or even plain C. It works with most Windows compilers
* including Dev-CPP, Visual C++ and LCC-WIN32. Including DispHelper in your project
* couldn't be simpler as it is available in a compacted single file version (this file).
*
* Included with DispHelper are over 20 samples that demonstrate using COM objects
* including ADO, CDO, Outlook, Eudora, Excel, Word, Internet Explorer, MSHTML,
* PocketSoap, Word Perfect, MS Agent, SAPI, MSXML, WIA, dexplorer and WMI.
*
* DispHelper is free open source software provided under the BSD license.
*
* Find out more, browse the readable version of the source code
* and download DispHelper at:
* http://sourceforge.net/projects/disphelper/
* http://disphelper.sourceforge.net/
*/
/* To use DispHelper in your project, include this file(disphelper.c) and the
* header (disphelper.h). For Visual C++, Borland C++ and LCC-Win32 import
* libraries are included via pragma directives. For other compilers you may
* need to add ole32, oleaut32 and uuid. To do this in Dev-CPP add
* "-lole32 -loleaut32 -luuid" to the linker box under Project->Project Options->Parameters.
*/
/* If you are using Dev-CPP and get errors when compiling this file:
* Make sure this file is set to compile as C and not C++ under
* Project->Project Options->Files.
*/
#define DISPHELPER_INTERNAL_BUILD
#include "disphelper.h"
#include <math.h>
#include <assert.h>
/* ----- convert.h ----- */
HRESULT ConvertFileTimeToVariantTime(FILETIME * pft, DATE * pDate);
HRESULT ConvertVariantTimeToFileTime(DATE date, FILETIME * pft);
HRESULT ConvertVariantTimeToSystemTime(DATE date, SYSTEMTIME * pSystemTime);
HRESULT ConvertSystemTimeToVariantTime(SYSTEMTIME * pSystemTime, DATE * pDate);
HRESULT ConvertTimeTToVariantTime(time_t timeT, DATE * pDate);
HRESULT ConvertVariantTimeToTimeT(DATE date, time_t * pTimeT);
HRESULT ConvertAnsiStrToBStr(LPCSTR szAnsiIn, BSTR * lpBstrOut);
HRESULT ConvertBStrToAnsiStr(BSTR bstrIn, LPSTR * lpszOut);
/* ----- dh_create.c ----- */
HRESULT dhCreateObjectEx(LPCOLESTR szProgId, REFIID riid, DWORD dwClsContext,
COSERVERINFO * pServerInfo, void ** ppv)
{
CLSID clsid;
HRESULT hr;
IClassFactory * pCf = NULL;
DH_ENTER(L"CreateObjectEx");
if (!szProgId || !riid || !ppv) return DH_EXIT(E_INVALIDARG, szProgId);
if (L'{' == szProgId[0])
hr = CLSIDFromString((LPOLESTR) szProgId, &clsid);
else
hr = CLSIDFromProgID(szProgId, &clsid);
if (SUCCEEDED(hr)) hr = CoGetClassObject(&clsid, dwClsContext, pServerInfo, &IID_IClassFactory, (void **) &pCf);
if (SUCCEEDED(hr)) hr = pCf->lpVtbl->CreateInstance(pCf, NULL, riid, ppv);
if (pCf) pCf->lpVtbl->Release(pCf);
return DH_EXIT(hr, szProgId);
}
HRESULT dhGetObjectEx(LPCOLESTR szPathName, LPCOLESTR szProgId, REFIID riid,
DWORD dwClsContext, LPVOID lpvReserved, void ** ppv)
{
HRESULT hr;
DH_ENTER(L"GetObjectEx");
if ((!szProgId && !szPathName) || !riid || !ppv || lpvReserved) return DH_EXIT(E_INVALIDARG, szProgId);
if (szPathName) {
if (!szProgId) {
hr = CoGetObject(szPathName, NULL, riid, ppv);
} else {
IPersistFile * ppf = NULL;
hr = dhCreateObjectEx(szProgId, &IID_IPersistFile, dwClsContext, NULL, (void **) &ppf);
if (SUCCEEDED(hr)) hr = ppf->lpVtbl->Load(ppf, szPathName, 0);
if (SUCCEEDED(hr)) hr = ppf->lpVtbl->QueryInterface(ppf, riid, ppv);
if (ppf) ppf->lpVtbl->Release(ppf);
}
} else {
CLSID clsid;
IUnknown * pUnk = NULL;
if (L'{' == szProgId[0])
hr = CLSIDFromString((LPOLESTR) szProgId, &clsid);
else
hr = CLSIDFromProgID(szProgId, &clsid);
if (SUCCEEDED(hr)) hr = GetActiveObject(&clsid, NULL, &pUnk);
if (SUCCEEDED(hr)) hr = pUnk->lpVtbl->QueryInterface(pUnk, riid, ppv);
if (pUnk) pUnk->lpVtbl->Release(pUnk);
}
return DH_EXIT(hr, szProgId);
}
HRESULT dhCreateObject(LPCOLESTR szProgId, LPCWSTR szMachine, IDispatch ** ppDisp)
{
COSERVERINFO si = { 0 };
DH_ENTER(L"CreateObject");
si.pwszName = (LPWSTR) szMachine;
return DH_EXIT(dhCreateObjectEx(szProgId, &IID_IDispatch,
szMachine ? CLSCTX_REMOTE_SERVER : CLSCTX_LOCAL_SERVER|CLSCTX_INPROC_SERVER,
szMachine ? &si : NULL, (void **) ppDisp), szProgId);
}
HRESULT dhGetObject(LPCOLESTR szPathName, LPCOLESTR szProgId, IDispatch ** ppDisp)
{
DH_ENTER(L"GetObject");
return DH_EXIT(dhGetObjectEx(szPathName, szProgId, &IID_IDispatch,
CLSCTX_LOCAL_SERVER|CLSCTX_INPROC_SERVER, NULL, (void **) ppDisp), szProgId);
}
HRESULT dhCallMethod(IDispatch * pDisp, LPCOLESTR szMember, ... )
{
HRESULT hr;
va_list marker;
DH_ENTER(L"CallMethod");
va_start(marker, szMember);
hr = dhCallMethodV(pDisp, szMember, &marker);
va_end(marker);
return DH_EXIT(hr, szMember);
}
HRESULT dhPutValue(IDispatch * pDisp, LPCOLESTR szMember, ...)
{
HRESULT hr;
va_list marker;
DH_ENTER(L"PutValue");
va_start(marker, szMember);
hr = dhPutValueV(pDisp, szMember, &marker);
va_end(marker);
return DH_EXIT(hr, szMember);
}
HRESULT dhPutRef(IDispatch * pDisp, LPCOLESTR szMember, ...)
{
HRESULT hr;
va_list marker;
DH_ENTER(L"PutRef");
va_start(marker, szMember);
hr = dhPutRefV(pDisp, szMember, &marker);
va_end(marker);
return DH_EXIT(hr, szMember);
}
HRESULT dhGetValue(LPCWSTR szIdentifier, void * pResult, IDispatch * pDisp, LPCOLESTR szMember, ...)
{
HRESULT hr;
va_list marker;
DH_ENTER(L"GetValue");
va_start(marker, szMember);
hr = dhGetValueV(szIdentifier, pResult, pDisp, szMember, &marker);
va_end(marker);
return DH_EXIT(hr, szMember);
}
HRESULT dhInvoke(int invokeType, VARTYPE returnType, VARIANT * pvResult, IDispatch * pDisp, LPCOLESTR szMember, ...)
{
HRESULT hr;
va_list marker;
DH_ENTER(L"Invoke");
va_start(marker, szMember);
hr = dhInvokeV(invokeType, returnType, pvResult, pDisp, szMember, &marker);
va_end(marker);
return DH_EXIT(hr, szMember);
}
/* ----- dh_core.c ----- */
BOOL dh_g_bIsUnicodeMode;
HRESULT dhInvokeArray(int invokeType, VARIANT * pvResult, UINT cArgs,
IDispatch * pDisp, LPCOLESTR szMember, VARIANT * pArgs)
{
DISPPARAMS dp = { 0 };
EXCEPINFO excep = { 0 };
DISPID dispidNamed = DISPID_PROPERTYPUT;
DISPID dispID;
UINT uiArgErr;
HRESULT hr;
DH_ENTER(L"InvokeArray");
//fprintf(stderr, "1\n");
if(!pDisp || !szMember || (cArgs != 0 && !pArgs)) return DH_EXIT(E_INVALIDARG, szMember);
//fprintf(stderr, "2\n");
hr = pDisp->lpVtbl->GetIDsOfNames(pDisp, &IID_NULL, (LPOLESTR *) &szMember, 1, LOCALE_USER_DEFAULT, &dispID);
//fprintf(stderr, "3\n");
if(FAILED(hr)) return DH_EXITEX(hr, TRUE, szMember, szMember, NULL, 0);
//fprintf(stderr, "4\n");
if (pvResult != NULL) VariantInit(pvResult);
//fprintf(stderr, "5\n");
dp.cArgs = cArgs;
dp.rgvarg = pArgs;
//fprintf(stderr, "6\n");
if(invokeType & (DISPATCH_PROPERTYPUT | DISPATCH_PROPERTYPUTREF)) {
dp.cNamedArgs = 1;
dp.rgdispidNamedArgs = &dispidNamed;
}
//fprintf(stderr, "7\n");
hr = pDisp->lpVtbl->Invoke(pDisp, dispID, &IID_NULL, LOCALE_USER_DEFAULT, (WORD) invokeType, &dp, pvResult, &excep, &uiArgErr);
//fprintf(stderr, "8\n");
return DH_EXITEX(hr, TRUE, szMember, szMember, &excep, uiArgErr);
}
HRESULT dhCallMethodV(IDispatch * pDisp, LPCOLESTR szMember, va_list * marker)
{
DH_ENTER(L"CallMethodV");
return DH_EXIT(dhInvokeV(DISPATCH_METHOD, VT_EMPTY, NULL, pDisp, szMember, marker), szMember);
}
HRESULT dhPutValueV(IDispatch * pDisp, LPCOLESTR szMember, va_list * marker)
{
DH_ENTER(L"PutValueV");
return DH_EXIT(dhInvokeV(DISPATCH_PROPERTYPUT, VT_EMPTY, NULL, pDisp, szMember, marker), szMember);
}
HRESULT dhPutRefV(IDispatch * pDisp, LPCOLESTR szMember, va_list * marker)
{
DH_ENTER(L"PutRefV");
return DH_EXIT(dhInvokeV(DISPATCH_PROPERTYPUTREF, VT_EMPTY, NULL, pDisp, szMember, marker), szMember);
}
HRESULT dhGetValueV(LPCWSTR szIdentifier, void * pResult, IDispatch * pDisp, LPCOLESTR szMember, va_list * marker)
{
VARIANT vtResult;
VARTYPE returnType;
HRESULT hr;
DH_ENTER(L"GetValueV");
if (!pResult || !szIdentifier) return DH_EXIT(E_INVALIDARG, szMember);
if (*szIdentifier == L'%') szIdentifier++;
switch(*szIdentifier) {
case L'd': returnType = VT_I4; break;
case L'u': returnType = VT_UI4; break;
case L'e': returnType = VT_R8; break;
case L'b': returnType = VT_BOOL; break;
case L'v': returnType = VT_EMPTY; break;
case L'B': returnType = VT_BSTR; break;
case L'S': returnType = VT_BSTR; break;
case L's': returnType = VT_BSTR; break;
case L'T': returnType = VT_BSTR; break;
case L'o': returnType = VT_DISPATCH; break;
case L'O': returnType = VT_UNKNOWN; break;
case L't': returnType = VT_DATE; break;
case L'W': returnType = VT_DATE; break;
case L'f': returnType = VT_DATE; break;
case L'D': returnType = VT_DATE; break;
#ifndef _WIN64
case L'p': returnType = VT_I4; break;
#else
case L'p': returnType = VT_I8; break;
#endif
default:
DEBUG_NOTIFY_INVALID_IDENTIFIER(*szIdentifier);
return DH_EXIT(E_INVALIDARG, szMember);
}
hr = dhInvokeV(DISPATCH_PROPERTYGET|DISPATCH_METHOD, returnType, &vtResult, pDisp, szMember, marker);
if (FAILED(hr)) return DH_EXIT(hr, szMember);
switch(*szIdentifier) {
case L'd':
*((LONG *) pResult) = V_I4(&vtResult);
break;
case L'u':
*((ULONG *) pResult) = V_UI4(&vtResult);
break;
case L'e':
*((DOUBLE *) pResult) = V_R8(&vtResult);
break;
case L'b':
*((BOOL *) pResult) = V_BOOL(&vtResult);
break;
case L'v':
*((VARIANT *) pResult) = vtResult;
break;
case L'B':
*((BSTR *) pResult) = V_BSTR(&vtResult);
break;
case L'S':
*((LPWSTR *) pResult) = V_BSTR(&vtResult);
break;
case L's':
hr = ConvertBStrToAnsiStr(V_BSTR(&vtResult), (LPSTR *) pResult);
SysFreeString(V_BSTR(&vtResult));
break;
case L'T':
if (dh_g_bIsUnicodeMode) {
*((LPWSTR *) pResult) = V_BSTR(&vtResult);
} else {
hr = ConvertBStrToAnsiStr(V_BSTR(&vtResult), (LPSTR *) pResult);
SysFreeString(V_BSTR(&vtResult));
}
break;
case L'o':
*((IDispatch **) pResult) = V_DISPATCH(&vtResult);
if (V_DISPATCH(&vtResult) == NULL) hr = E_NOINTERFACE;
break;
case L'O':
*((IUnknown **) pResult) = V_UNKNOWN(&vtResult);
if (V_UNKNOWN(&vtResult) == NULL) hr = E_NOINTERFACE;
break;
case L't':
hr = ConvertVariantTimeToTimeT(V_DATE(&vtResult), (time_t *) pResult);
break;
case L'W':
hr = ConvertVariantTimeToSystemTime(V_DATE(&vtResult), (SYSTEMTIME *) pResult);
break;
case L'f':
hr = ConvertVariantTimeToFileTime(V_DATE(&vtResult), (FILETIME *) pResult);
break;
case L'D':
*((DATE *) pResult) = V_DATE(&vtResult);
break;
case L'p':
#ifndef _WIN64
*((LPVOID *) pResult) = (LPVOID) V_I4(&vtResult);
#else
*((LPVOID *) pResult) = (LPVOID) V_I8(&vtResult);
#endif
break;
}
return DH_EXIT(hr, szMember);
}
/* ----- dh_invoke.c ----- */
static HRESULT TraverseSubObjects(IDispatch ** ppDisp, LPWSTR * lpszMember, va_list * marker);
static HRESULT CreateArgumentArray(LPWSTR szTemp, VARIANT * pArgs, BOOL * pbFreeList, UINT * pcArgs, va_list * marker);
static HRESULT InternalInvokeV(int invokeType, VARTYPE returnType, VARIANT * pvResult, IDispatch * pDisp, LPOLESTR szMember, va_list * marker);
static HRESULT ExtractArgument(VARIANT * pvArg, WCHAR chIdentifier, BOOL * pbFreeArg, va_list * marker);
HRESULT dhInvokeV(int invokeType, VARTYPE returnType, VARIANT * pvResult,
IDispatch * pDisp, LPCOLESTR szMember, va_list * marker)
{
WCHAR szCopy[DH_MAX_MEMBER];
LPWSTR szTemp = szCopy;
SIZE_T cchDest = ARRAYSIZE(szCopy);
HRESULT hr;
DH_ENTER(L"InvokeV");
if (!pDisp || !szMember || !marker) return DH_EXIT(E_INVALIDARG, szMember);
do {
if (cchDest-- == 0) return DH_EXIT(E_INVALIDARG, szMember);
} while( (*szTemp++ = *szMember++) );
szTemp = szCopy;
hr = TraverseSubObjects(&pDisp, &szTemp, marker);
if (SUCCEEDED(hr)) {
hr = InternalInvokeV(invokeType, returnType, pvResult, pDisp, szTemp, marker);
pDisp->lpVtbl->Release(pDisp);
}
return DH_EXIT(hr, szMember);
}
static HRESULT TraverseSubObjects(IDispatch ** ppDisp, LPWSTR * lpszMember, va_list * marker)
{
LPWSTR szSeperator, szTemp;
VARIANT vtObject;
HRESULT hr;
DH_ENTER(L"TraverseSubObjects");
if (**lpszMember == L'.') (*lpszMember)++;
(*ppDisp)->lpVtbl->AddRef(*ppDisp);
szSeperator = wcschr(*lpszMember, L'.');
if (szSeperator == NULL) return DH_EXIT(NOERROR, *lpszMember);
szTemp = *lpszMember;
do {
*szSeperator = L'\0';
hr = InternalInvokeV(DISPATCH_METHOD|DISPATCH_PROPERTYGET, VT_DISPATCH,
&vtObject, *ppDisp, szTemp, marker);
if (!vtObject.pdispVal && SUCCEEDED(hr)) hr = E_NOINTERFACE;
(*ppDisp)->lpVtbl->Release(*ppDisp);
if (FAILED(hr)) break;
*ppDisp = vtObject.pdispVal;
szTemp = szSeperator + 1;
} while ( (szSeperator = wcschr(szTemp, L'.') ) != NULL);
*lpszMember = szTemp;
return DH_EXIT(hr, *lpszMember);
}
static HRESULT InternalInvokeV(int invokeType, VARTYPE returnType, VARIANT * pvResult,
IDispatch * pDisp, LPOLESTR szMember, va_list * marker)
{
VARIANT vtArgs[DH_MAX_ARGS];
BOOL bFreeList[DH_MAX_ARGS];
HRESULT hr;
UINT cArgs, iArg;
DH_ENTER(L"InternalInvokeV");
hr = CreateArgumentArray(szMember, vtArgs, bFreeList, &cArgs, marker);
if (SUCCEEDED(hr)) {
hr = dhInvokeArray(invokeType, pvResult, cArgs, pDisp, szMember, &vtArgs[DH_MAX_ARGS - cArgs]);
for (iArg = DH_MAX_ARGS - cArgs;iArg < DH_MAX_ARGS;iArg++) {
if (bFreeList[iArg]) VariantClear(&vtArgs[iArg]);
}
if (SUCCEEDED(hr) && pvResult != NULL &&
pvResult->vt != returnType && returnType != VT_EMPTY) {
hr = VariantChangeType(pvResult, pvResult, 16 , returnType);
if (FAILED(hr)) VariantClear(pvResult);
}
}
return DH_EXIT(hr, szMember);
}
static HRESULT CreateArgumentArray(LPWSTR szMember, VARIANT * pArgs, BOOL * pbFreeList,
UINT * pcArgs, va_list * marker)
{
HRESULT hr = NOERROR;
INT iArg = DH_MAX_ARGS;
BOOL bInArguments = FALSE;
DH_ENTER(L"CreateArgumentArray");
while (*szMember) {
if (!bInArguments &&
(*szMember == L'(' || *szMember == L' ' || *szMember == L'=') ) {
bInArguments = TRUE;
*szMember = L'\0';
} else if (*szMember == L'%') {
if (!bInArguments) {
bInArguments = TRUE;
*szMember = L'\0';
}
iArg--;
if (iArg == -1) { hr = E_INVALIDARG; break; }
szMember++;
hr = ExtractArgument(&pArgs[iArg], *szMember, &pbFreeList[iArg], marker);
if (FAILED(hr)) break;
}
szMember++;
}
*pcArgs = DH_MAX_ARGS - iArg;
if (FAILED(hr)) {
for (++iArg;iArg < DH_MAX_ARGS; iArg++) {
if (pbFreeList[iArg]) VariantClear(&pArgs[iArg]);
}
}
return DH_EXIT(hr, szMember);
}
static HRESULT ExtractArgument(VARIANT * pvArg, WCHAR chIdentifier, BOOL * pbFreeArg, va_list * marker)
{
HRESULT hr = NOERROR;
*pbFreeArg = FALSE;
if (chIdentifier == L'T') chIdentifier = (dh_g_bIsUnicodeMode ? L'S' : L's');
switch (chIdentifier) {
case L'd':
V_VT(pvArg) = VT_I4;
V_I4(pvArg) = va_arg(*marker, LONG);
break;
case L'u':
V_VT(pvArg) = VT_UI4;
V_UI4(pvArg) = va_arg(*marker, ULONG);
break;
case L'e':
V_VT(pvArg) = VT_R8;
V_R8(pvArg) = va_arg(*marker, DOUBLE);
break;
case L'b':
V_VT(pvArg) = VT_BOOL;
V_BOOL(pvArg) = ( va_arg(*marker, BOOL) ? VARIANT_TRUE : VARIANT_FALSE );
break;
case L'v':
*pvArg = *va_arg(*marker, VARIANT *);
break;
case L'm':
V_VT(pvArg) = VT_ERROR;
V_ERROR(pvArg) = DISP_E_PARAMNOTFOUND;
break;
case L'B':
V_VT(pvArg) = VT_BSTR;
V_BSTR(pvArg) = va_arg(*marker, BSTR);
break;
case L'S':
{
LPOLESTR szTemp = va_arg(*marker, LPOLESTR);
V_VT(pvArg) = VT_BSTR;
V_BSTR(pvArg) = SysAllocString(szTemp);
if (V_BSTR(pvArg) == NULL && szTemp != NULL) hr = E_OUTOFMEMORY;
*pbFreeArg = TRUE;
break;
}
case L's':
V_VT(pvArg) = VT_BSTR;
hr = ConvertAnsiStrToBStr(va_arg(*marker, LPSTR), &V_BSTR(pvArg));
*pbFreeArg = TRUE;
break;
case L'o':
V_VT(pvArg) = VT_DISPATCH;
V_DISPATCH(pvArg) = va_arg(*marker, IDispatch *);
break;
case L'O':
V_VT(pvArg) = VT_UNKNOWN;
V_UNKNOWN(pvArg) = va_arg(*marker, IUnknown *);
break;
case L'D':
V_VT(pvArg) = VT_DATE;
V_DATE(pvArg) = va_arg(*marker, DATE);
break;
case L't':
V_VT(pvArg) = VT_DATE;
hr = ConvertTimeTToVariantTime(va_arg(*marker, time_t), &V_DATE(pvArg));
break;
case L'W':
V_VT(pvArg) = VT_DATE;
hr = ConvertSystemTimeToVariantTime(va_arg(*marker, SYSTEMTIME *), &V_DATE(pvArg));
break;
case L'f':
V_VT(pvArg) = VT_DATE;
hr = ConvertFileTimeToVariantTime(va_arg(*marker, FILETIME *), &V_DATE(pvArg));
break;
case L'p':
#ifndef _WIN64
V_VT(pvArg) = VT_I4;
V_I4(pvArg) = (LONG) va_arg(*marker, LPVOID);
#else
V_VT(pvArg) = VT_I8;
V_I8(pvArg) = (LONGLONG) va_arg(*marker, LPVOID);
#endif
break;
default:
hr = E_INVALIDARG;
DEBUG_NOTIFY_INVALID_IDENTIFIER(chIdentifier);
break;
}
return hr;
}
/* ----- dh_enum.c ----- */
HRESULT dhEnumBeginV(IEnumVARIANT ** ppEnum, IDispatch * pDisp, LPCOLESTR szMember, va_list * marker)
{
DISPPARAMS dp = { 0 };
EXCEPINFO excep = { 0 };
VARIANT vtResult;
IDispatch * pDispObj;
HRESULT hr;
DH_ENTER(L"EnumBeginV");
if (!ppEnum || !pDisp) return DH_EXIT(E_INVALIDARG, szMember);
if (szMember != NULL) {
hr = dhGetValueV(L"%o", &pDispObj, pDisp, szMember, marker);
if (FAILED(hr)) return DH_EXIT(hr, szMember);
} else {
pDispObj = pDisp;
}
hr = pDispObj->lpVtbl->Invoke(pDispObj, DISPID_NEWENUM, &IID_NULL, LOCALE_USER_DEFAULT,
DISPATCH_METHOD | DISPATCH_PROPERTYGET, &dp, &vtResult, &excep, NULL);
if (szMember != NULL) pDispObj->lpVtbl->Release(pDispObj);
if (FAILED(hr)) return DH_EXITEX(hr, TRUE, L"_NewEnum", szMember, &excep, 0);
if (vtResult.vt == VT_DISPATCH)
hr = vtResult.pdispVal->lpVtbl->QueryInterface(vtResult.pdispVal, &IID_IEnumVARIANT, (void **) ppEnum);
else if (vtResult.vt == VT_UNKNOWN)
hr = vtResult.punkVal->lpVtbl->QueryInterface(vtResult.punkVal, &IID_IEnumVARIANT, (void **) ppEnum);
else
hr = E_NOINTERFACE;
VariantClear(&vtResult);
return DH_EXIT(hr, szMember);
}
HRESULT dhEnumNextVariant(IEnumVARIANT * pEnum, VARIANT * pvResult)
{
DH_ENTER(L"EnumNextVariant");
if (!pEnum || !pvResult) return DH_EXIT(E_INVALIDARG, L"Enumerator");
return DH_EXIT(pEnum->lpVtbl->Next(pEnum, 1, pvResult, NULL), L"Enumerator");
}
HRESULT dhEnumNextObject(IEnumVARIANT * pEnum, IDispatch ** ppDisp)
{
VARIANT vtResult;
HRESULT hr;
DH_ENTER(L"EnumNextObject");
if (!pEnum || !ppDisp) return DH_EXIT(E_INVALIDARG, L"Enumerator");
hr = pEnum->lpVtbl->Next(pEnum, 1, &vtResult, NULL);
if (hr == S_OK) {
if (vtResult.vt == VT_DISPATCH) {
*ppDisp = vtResult.pdispVal;
} else {
hr = VariantChangeType(&vtResult, &vtResult, 0, VT_DISPATCH);
if (SUCCEEDED(hr)) *ppDisp = vtResult.pdispVal;
else VariantClear(&vtResult);
}
}
return DH_EXIT(hr, L"Enumerator");
}
HRESULT dhEnumBegin(IEnumVARIANT ** ppEnum, IDispatch * pDisp, LPCOLESTR szMember, ...)
{
HRESULT hr;
va_list marker;
DH_ENTER(L"EnumBegin");
va_start(marker, szMember);
hr = dhEnumBeginV(ppEnum, pDisp, szMember, &marker);
va_end(marker);
return DH_EXIT(hr, szMember);
}
/* ----- convert.c ----- */
static const LONGLONG FILE_TIME_ONE_DAY = 864000000000;
static const LONGLONG FILE_TIME_VARIANT_DAY0 = 94353120000000000;
static const ULONGLONG FILE_TIME_VARIANT_OVERFLOW = 2650467744000000000;
static const DATE VARIANT_FILE_TIME_DAY0 = -109205;
static const DATE VARIANT_TIMET_DAY0 = 25569;
static const LONG TIMET_ONE_DAY = 86400;
#ifndef _WIN64
static const DATE VARIANT_TIMET_MAX = 50424.13480;
#else
static const time_t TIMET_VARIANT_OVERFLOW = 253402300800;
#endif
HRESULT ConvertFileTimeToVariantTime(FILETIME * pft, DATE * pDate)
{
ULONGLONG ftScalar;
if (!pft || !pDate) return E_INVALIDARG;
ftScalar = *((ULONGLONG *) pft) + 500;
if (ftScalar >= FILE_TIME_VARIANT_OVERFLOW) return E_INVALIDARG;
*pDate = (LONGLONG) (ftScalar - FILE_TIME_VARIANT_DAY0) / (double) FILE_TIME_ONE_DAY;
if (*pDate < 0) *pDate = floor(*pDate) + (floor(*pDate) - *pDate);
return NOERROR;
}
HRESULT ConvertVariantTimeToFileTime(DATE date, FILETIME * pft)
{
ULONGLONG ftScalar;
if (!pft) return E_INVALIDARG;
if (date < 0) date = ceil(date) + (ceil(date) - date);
if (date < VARIANT_FILE_TIME_DAY0) return E_INVALIDARG;
ftScalar = (ULONGLONG) ((date * FILE_TIME_ONE_DAY) + FILE_TIME_VARIANT_DAY0);
pft->dwLowDateTime = (DWORD)ftScalar;
pft->dwHighDateTime = (DWORD)(ftScalar >> 32);
return NOERROR;
}
HRESULT ConvertVariantTimeToSystemTime(DATE date, SYSTEMTIME * pSystemTime)
{
HRESULT hr;
FILETIME fileTime;
if (!pSystemTime) return E_INVALIDARG;
if (FAILED(hr = ConvertVariantTimeToFileTime(date, &fileTime))) return hr;
return (FileTimeToSystemTime(&fileTime, pSystemTime) ? NOERROR : HRESULT_FROM_WIN32( GetLastError() ));
}
HRESULT ConvertSystemTimeToVariantTime(SYSTEMTIME * pSystemTime, DATE * pDate)
{
FILETIME fileTime;
if (!pSystemTime || !pDate) return E_INVALIDARG;
if (!SystemTimeToFileTime(pSystemTime, &fileTime)) return HRESULT_FROM_WIN32( GetLastError() );
return ConvertFileTimeToVariantTime(&fileTime, pDate);
}
HRESULT ConvertVariantTimeToTimeT(DATE date, time_t * pTimeT)
{
struct tm * ptm;
if (!pTimeT) return E_INVALIDARG;
#ifndef _WIN64
if (date < VARIANT_TIMET_DAY0 || date > VARIANT_TIMET_MAX) return E_INVALIDARG;
#else
if (date < VARIANT_TIMET_DAY0) return E_INVALIDARG;
#endif
*pTimeT = (time_t) (((date - VARIANT_TIMET_DAY0) * TIMET_ONE_DAY) + 0.5);
if ( (ptm = gmtime(pTimeT)) == NULL || !(ptm->tm_isdst = -1) ||
(*pTimeT = mktime(ptm)) == (time_t) -1 ) return E_FAIL;
return NOERROR;
}
HRESULT ConvertTimeTToVariantTime(time_t timeT, DATE * pDate)
{
struct tm localtm, utctm, * ptm;
time_t timeTLocal, timeTUtc;
if (!pDate) return E_INVALIDARG;
if ( (ptm = localtime(&timeT)) == NULL) return E_FAIL;
localtm = *ptm;
if ( (ptm = gmtime(&timeT)) == NULL) return E_FAIL;
utctm = *ptm;
localtm.tm_isdst = 0;
utctm.tm_isdst = 0;
if ( (timeTLocal = mktime(&localtm)) == (time_t) -1 ||
(timeTUtc = mktime(&utctm)) == (time_t) -1) return E_FAIL;
timeT += timeTLocal - timeTUtc;
#ifdef _WIN64
if (timeT >= TIMET_VARIANT_OVERFLOW) return E_INVALIDARG;
#endif
*pDate = (DATE) (timeT / (double) TIMET_ONE_DAY) + VARIANT_TIMET_DAY0;
return NOERROR;
}
HRESULT ConvertAnsiStrToBStr(LPCSTR szAnsiIn, BSTR * lpBstrOut)
{
DWORD dwSize;
if (lpBstrOut == NULL) return E_INVALIDARG;
if (szAnsiIn == NULL) { *lpBstrOut = NULL; return NOERROR; }
dwSize = MultiByteToWideChar(CP_ACP, 0, szAnsiIn, -1, NULL, 0);
if (dwSize == 0) return HRESULT_FROM_WIN32( GetLastError() );
*lpBstrOut = SysAllocStringLen(NULL, dwSize - 1);
if (*lpBstrOut == NULL) return E_OUTOFMEMORY;
if ( !MultiByteToWideChar(CP_ACP, 0, szAnsiIn, -1, *lpBstrOut, dwSize) ) {
SysFreeString(*lpBstrOut);
return HRESULT_FROM_WIN32( GetLastError() );
}
return NOERROR;
}
HRESULT ConvertBStrToAnsiStr(BSTR bstrIn, LPSTR * lpszOut)
{
DWORD dwSize;
if (lpszOut == NULL) return E_INVALIDARG;
if (bstrIn == NULL) { *lpszOut = NULL; return NOERROR; }
dwSize = WideCharToMultiByte(CP_ACP, 0, bstrIn, -1, NULL, 0, NULL, NULL);
if (dwSize == 0) return HRESULT_FROM_WIN32( GetLastError() );
*lpszOut = (LPSTR) SysAllocStringByteLen(NULL, dwSize - 1);
if (*lpszOut == NULL) return E_OUTOFMEMORY;
if ( !WideCharToMultiByte(CP_ACP, 0, bstrIn, -1, *lpszOut, dwSize, NULL, NULL) ) {
SysFreeString((BSTR) *lpszOut);
return HRESULT_FROM_WIN32( GetLastError() );
}
return NOERROR;
}
/* ----- dh_exceptions.c ----- */
#ifndef DISPHELPER_NO_EXCEPTIONS
static DH_EXCEPTION_OPTIONS g_ExceptionOptions;
static LONG f_lngTlsInitBegin = -1, f_lngTlsInitEnd = -1;
static uintptr_t f_TlsIdxStackCount, f_TlsIdxException;
#define SetStackCount(nStackCount) TlsSetValue(f_TlsIdxStackCount, (LPVOID) (nStackCount))
#define SetExceptionPtr(pException) TlsSetValue(f_TlsIdxException, pException);
#define GetStackCount() (uintptr_t) TlsGetValue(f_TlsIdxStackCount)
#define GetExceptionPtr() TlsGetValue(f_TlsIdxException)
#define CheckTlsInitialized() if (f_lngTlsInitEnd != 0) InitializeTlsIndexes();
static void hlprStringCchCopyW(LPWSTR pszDest, SIZE_T cchDest, LPCWSTR pszSrc)
{
assert(cchDest > 0);
do {
if (--cchDest == 0) break;
} while ((*pszDest++ = *pszSrc++));
*pszDest = L'\0';
}
static void InitializeTlsIndexes(void)
{
if (0 == InterlockedIncrement(&f_lngTlsInitBegin)) {
f_TlsIdxStackCount = TlsAlloc();
f_TlsIdxException = TlsAlloc();
f_lngTlsInitEnd = 0;
} else {
while (f_lngTlsInitEnd != 0) Sleep(5);
}
}
void dhEnter(void)
{
CheckTlsInitialized();
SetStackCount(GetStackCount() + 1);
}
HRESULT dhExitEx(HRESULT hr, BOOL bDispatchError, LPCWSTR szMember, LPCWSTR szCompleteMember,
EXCEPINFO * pExcepInfo, UINT iArgError, LPCWSTR szFunctionName)
{
uintptr_t nStackCount = GetStackCount();
SetStackCount(nStackCount - 1);
if (FAILED(hr) && !g_ExceptionOptions.bDisableRecordExceptions) {
PDH_EXCEPTION pException = GetExceptionPtr();
if (!pException) {
pException = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DH_EXCEPTION));
if (!pException) return hr;
SetExceptionPtr(pException);
} else if (pException->bOld) {
SysFreeString(pException->szDescription);
SysFreeString(pException->szSource);
SysFreeString(pException->szHelpFile);
ZeroMemory(pException, sizeof(DH_EXCEPTION));
}
if (pException->hr == 0) {
pException->hr = hr;
pException->iArgError = iArgError;
pException->szErrorFunction = szFunctionName;
pException->bDispatchError = bDispatchError;
if (szMember) hlprStringCchCopyW(pException->szMember, ARRAYSIZE(pException->szMember), szMember);
if (pExcepInfo && hr == DISP_E_EXCEPTION) {
if (pExcepInfo->pfnDeferredFillIn &&
!IsBadCodePtr((FARPROC) pExcepInfo->pfnDeferredFillIn)) pExcepInfo->pfnDeferredFillIn(pExcepInfo);
pException->szDescription = pExcepInfo->bstrDescription;