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574 lines (534 loc) · 18.7 KB
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//-------------------------------------------------------------------------------------------------------
// Project: NodeActiveX
// Author: Yuri Dursin
// Description: Common utilities implementations
//-------------------------------------------------------------------------------------------------------
#include "stdafx.h"
#include "disp.h"
const GUID CLSID_DispObjectImpl = { 0x9dce8520, 0x2efe, 0x48c0,{ 0xa0, 0xdc, 0x95, 0x1b, 0x29, 0x18, 0x72, 0xc0 } };
//-------------------------------------------------------------------------------------------------------
#define ERROR_MESSAGE_WIDE_MAXSIZE 1024
#define ERROR_MESSAGE_UTF8_MAXSIZE 2048
uint16_t *GetWin32ErroroMessage(uint16_t *buf, size_t buflen, Isolate *isolate, HRESULT hrcode, LPCOLESTR msg, LPCOLESTR msg2, LPCOLESTR desc) {
uint16_t *bufptr = buf;
size_t len;
if (msg) {
len = wcslen(msg);
if (len >= buflen) len = buflen - 1;
if (len > 0) memcpy(bufptr, msg, len * sizeof(uint16_t));
buflen -= len;
bufptr += len;
if (buflen > 2) {
bufptr[0] = ':';
bufptr[1] = ' ';
buflen -= 2;
bufptr += 2;
}
}
if (msg2) {
len = wcslen(msg2);
if (len >= buflen) len = buflen - 1;
if (len > 0) memcpy(bufptr, msg2, len * sizeof(uint16_t));
buflen -= len;
bufptr += len;
if (buflen > 1) {
bufptr[0] = ' ';
buflen -= 1;
bufptr += 1;
}
}
if (buflen > 1) {
len = desc ? wcslen(desc) : 0;
if (len > 0) {
if (len >= buflen) len = buflen - 1;
memcpy(bufptr, desc, len * sizeof(OLECHAR));
}
else {
len = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM, 0, hrcode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPOLESTR)bufptr, (DWORD)buflen - 1, 0);
if (len == 0) len = swprintf_s((LPOLESTR)bufptr, buflen - 1, L"Error 0x%08X", hrcode);
}
buflen -= len;
bufptr += len;
}
if (buflen > 0) bufptr[0] = 0;
return buf;
}
char *GetWin32ErroroMessage(char *buf, size_t buflen, Isolate *isolate, HRESULT hrcode, LPCOLESTR msg, LPCOLESTR msg2, LPCOLESTR desc) {
uint16_t buf_wide[ERROR_MESSAGE_WIDE_MAXSIZE];
GetWin32ErroroMessage(buf_wide, ERROR_MESSAGE_WIDE_MAXSIZE, isolate, hrcode, msg, msg2, desc);
int rcode = WideCharToMultiByte(CP_UTF8, 0, (WCHAR*)buf_wide, -1, buf, buflen, NULL, NULL);
if (rcode < 0) rcode = 0;
buf[rcode] = 0;
return buf;
}
Local<String> GetWin32ErroroMessage(Isolate *isolate, HRESULT hrcode, LPCOLESTR msg, LPCOLESTR msg2, LPCOLESTR desc) {
uint16_t buf_wide[ERROR_MESSAGE_WIDE_MAXSIZE];
return v8str(isolate, GetWin32ErroroMessage(buf_wide, ERROR_MESSAGE_WIDE_MAXSIZE, isolate, hrcode, msg, msg2, desc));
}
//-------------------------------------------------------------------------------------------------------
Local<Value> Variant2Array(Isolate *isolate, const VARIANT &v) {
Local<Context> ctx = isolate->GetCurrentContext();
if ((v.vt & VT_ARRAY) == 0) return Null(isolate);
SAFEARRAY *varr = (v.vt & VT_BYREF) != 0 ? *v.pparray : v.parray;
if (!varr || varr->cDims != 1) return Null(isolate);
VARTYPE vt = v.vt & VT_TYPEMASK;
LONG cnt = (LONG)varr->rgsabound[0].cElements;
Local<Array> arr = Array::New(isolate, cnt);
for (LONG i = varr->rgsabound[0].lLbound; i < cnt; i++) {
CComVariant vi;
if SUCCEEDED(SafeArrayGetElement(varr, &i, (vt == VT_VARIANT) ? (void*)&vi : (void*)&vi.byref)) {
if (vt != VT_VARIANT) vi.vt = vt;
arr->Set(ctx, (uint32_t)i, Variant2Value(isolate, vi, true));
}
}
return arr;
}
Local<Value> Variant2Value(Isolate *isolate, const VARIANT &v, bool allow_disp) {
if ((v.vt & VT_ARRAY) != 0) return Variant2Array(isolate, v);
VARTYPE vt = (v.vt & VT_TYPEMASK);
bool by_ref = (v.vt & VT_BYREF) != 0;
switch (vt) {
case VT_NULL:
return Null(isolate);
case VT_I1:
case VT_I2:
case VT_I4:
case VT_INT:
return Int32::New(isolate, by_ref ? *v.plVal : v.lVal);
case VT_UI1:
case VT_UI2:
case VT_UI4:
case VT_UINT:
return Uint32::New(isolate, by_ref ? *v.pulVal : v.ulVal);
case VT_CY:
return Number::New(isolate, (double)(by_ref ? v.pcyVal : &v.cyVal)->int64 / 10000.);
case VT_R4:
return Number::New(isolate, by_ref ? *v.pfltVal : v.fltVal);
case VT_R8:
return Number::New(isolate, by_ref ? *v.pdblVal : v.dblVal);
case VT_DATE: {
Local<Value> ret;
if (!Date::New(isolate->GetCurrentContext(), FromOleDate(by_ref ? *v.pdate : v.date)).ToLocal(&ret))
ret = Undefined(isolate);
return ret;
}
case VT_DECIMAL: {
DOUBLE dblval;
if FAILED(VarR8FromDec(by_ref ? v.pdecVal : &v.decVal, &dblval)) return Undefined(isolate);
return Number::New(isolate, dblval);
}
case VT_BOOL:
return Boolean::New(isolate, (by_ref ? *v.pboolVal : v.boolVal) == VARIANT_TRUE);
case VT_DISPATCH: {
IDispatch *disp = (by_ref ? *v.ppdispVal : v.pdispVal);
if (!disp) return Null(isolate);
if (allow_disp) {
DispObjectImpl *impl;
if (disp->QueryInterface(CLSID_DispObjectImpl, (void**)&impl) == S_OK) {
return impl->obj.Get(isolate);
}
return DispObject::NodeCreate(isolate, disp, L"Dispatch", option_auto);
}
return v8str(isolate, "[Dispatch]");
}
case VT_UNKNOWN: {
CComPtr<IDispatch> disp;
if (allow_disp && UnknownDispGet(by_ref ? *v.ppunkVal : v.punkVal, &disp)) {
return DispObject::NodeCreate(isolate, disp, L"Unknown", option_auto);
}
return v8str(isolate, "[Unknown]");
}
case VT_BSTR: {
BSTR bstr = by_ref ? (v.pbstrVal ? *v.pbstrVal : nullptr) : v.bstrVal;
if (!bstr) return String::Empty(isolate);
return v8str(isolate, bstr);
}
case VT_VARIANT:
if (v.pvarVal) return Variant2Value(isolate, *v.pvarVal, allow_disp);
}
return Undefined(isolate);
}
Local<Value> Variant2String(Isolate *isolate, const VARIANT &v) {
char buf[256] = {};
VARTYPE vt = (v.vt & VT_TYPEMASK);
bool by_ref = (v.vt & VT_BYREF) != 0;
switch (vt) {
case VT_EMPTY:
strcpy(buf, "EMPTY");
break;
case VT_NULL:
strcpy(buf, "NULL");
break;
case VT_I1:
case VT_I2:
case VT_I4:
case VT_INT:
sprintf_s(buf, "%i", (int)(by_ref ? *v.plVal : v.lVal));
break;
case VT_UI1:
case VT_UI2:
case VT_UI4:
case VT_UINT:
sprintf_s(buf, "%u", (unsigned int)(by_ref ? *v.pulVal : v.ulVal));
break;
case VT_CY:
sprintf_s(buf, "%03f", (double)(by_ref ? v.pcyVal : &v.cyVal)->int64 / 10000.);
break;
case VT_R4:
sprintf_s(buf, "%f", (double)(by_ref ? *v.pfltVal : v.fltVal));
break;
case VT_R8:
sprintf_s(buf, "%f", (double)(by_ref ? *v.pdblVal : v.dblVal));
break;
case VT_DATE: {
Local<Value> ret;
if (!Date::New(isolate->GetCurrentContext(), FromOleDate(by_ref ? *v.pdate : v.date)).ToLocal(&ret))
ret = Undefined(isolate);
return ret;
}
case VT_DECIMAL: {
DOUBLE dblval;
if FAILED(VarR8FromDec(by_ref ? v.pdecVal : &v.decVal, &dblval)) return Undefined(isolate);
sprintf_s(buf, "%f", (double)dblval);
break;
}
case VT_BOOL:
strcpy(buf, ((by_ref ? *v.pboolVal : v.boolVal) == VARIANT_TRUE) ? "true" : "false");
case VT_DISPATCH:
strcpy(buf, "[Dispatch]");
break;
case VT_UNKNOWN:
strcpy(buf, "[Unknown]");
break;
case VT_VARIANT:
if (v.pvarVal) return Variant2String(isolate, *v.pvarVal);
break;
default:
CComVariant tmp;
if (SUCCEEDED(VariantChangeType(&tmp, &v, 0, VT_BSTR)) && tmp.vt == VT_BSTR && v.bstrVal != nullptr) {
return v8str(isolate, v.bstrVal);
}
}
return v8str(isolate, buf);
}
void Value2Variant(Isolate *isolate, Local<Value> &val, VARIANT &var, VARTYPE vt) {
Local<Context> ctx = isolate->GetCurrentContext();
if (val.IsEmpty() || val->IsUndefined()) {
var.vt = VT_EMPTY;
}
else if (val->IsNull()) {
var.vt = VT_NULL;
}
else if (val->IsInt32()) {
//var.lVal = val->Int32Value();
var.lVal = val->Int32Value(ctx).FromMaybe(0);
var.vt = VT_I4;
}
else if (val->IsUint32()) {
//var.ulVal = val->Uint32Value();
var.ulVal = val->Uint32Value(ctx).FromMaybe(0);
var.vt = (var.ulVal <= 0x7FFFFFFF) ? VT_I4 : VT_UI4;
}
else if (val->IsNumber()) {
//var.dblVal = val->NumberValue();
var.dblVal = val->NumberValue(ctx).FromMaybe(0);
var.vt = VT_R8;
}
else if (val->IsDate()) {
//var.date = ToOleDate(val->NumberValue());
var.date = ToOleDate(val->NumberValue(ctx).FromMaybe(0));
var.vt = VT_DATE;
}
else if (val->IsBoolean()) {
var.boolVal = NODE_BOOL(isolate, val) ? VARIANT_TRUE : VARIANT_FALSE;
var.vt = VT_BOOL;
}
else if (val->IsArray() && (vt != VT_NULL)) {
Local<Array> arr = v8::Local<Array>::Cast(val);
uint32_t len = arr->Length();
if (vt == VT_EMPTY) vt = VT_VARIANT;
var.vt = VT_ARRAY | vt;
var.parray = SafeArrayCreateVector(vt, 0, len);
for (uint32_t i = 0; i < len; i++) {
CComVariant v;
Local<Value> val;
if (!arr->Get(ctx, i).ToLocal(&val)) val = Undefined(isolate);
Value2Variant(isolate, val, v, vt);
void *pv;
if (vt == VT_VARIANT) pv = (void*)&v;
else if (vt == VT_DISPATCH || vt == VT_UNKNOWN || vt == VT_BSTR) pv = v.byref;
else pv = (void*)&v.byref;
SafeArrayPutElement(var.parray, (LONG*)&i, pv);
}
vt = VT_EMPTY;
}
else if (val->IsObject()) {
auto obj = Local<Object>::Cast(val);
if (!DispObject::GetValueOf(isolate, obj, var) && !VariantObject::GetValueOf(isolate, obj, var)) {
var.vt = VT_DISPATCH;
var.pdispVal = new DispObjectImpl(obj);
var.pdispVal->AddRef();
}
}
else {
String::Value str(isolate, val);
var.vt = VT_BSTR;
var.bstrVal = (str.length() > 0) ? SysAllocString((LPOLESTR)*str) : 0;
}
if (vt != VT_EMPTY && vt != VT_NULL && vt != VT_VARIANT) {
if FAILED(VariantChangeType(&var, &var, 0, vt))
VariantClear(&var);
}
}
bool Value2Unknown(Isolate *isolate, Local<Value> &val, IUnknown **unk) {
if (val.IsEmpty() || !val->IsObject()) return false;
auto obj = Local<Object>::Cast(val);
CComVariant var;
if (!DispObject::GetValueOf(isolate, obj, var) && !VariantObject::GetValueOf(isolate, obj, var)) return false;
return VariantUnkGet(&var, unk);
}
bool UnknownDispGet(IUnknown *unk, IDispatch **disp) {
if (!unk) return false;
if SUCCEEDED(unk->QueryInterface(__uuidof(IDispatch), (void**)disp)) {
return true;
}
CComPtr<IEnumVARIANT> enum_ptr;
if SUCCEEDED(unk->QueryInterface(__uuidof(IEnumVARIANT), (void**)&enum_ptr)) {
*disp = new DispEnumImpl(enum_ptr);
(*disp)->AddRef();
return true;
}
return false;
}
bool VariantUnkGet(VARIANT *v, IUnknown **punk) {
IUnknown *unk = NULL;
if ((v->vt & VT_TYPEMASK) == VT_DISPATCH) {
unk = ((v->vt & VT_BYREF) != 0) ? *v->ppdispVal : v->pdispVal;
}
else if ((v->vt & VT_TYPEMASK) == VT_UNKNOWN) {
unk = ((v->vt & VT_BYREF) != 0) ? *v->ppunkVal : v->punkVal;
}
if (!unk) return false;
unk->AddRef();
*punk = unk;
return true;
}
bool VariantDispGet(VARIANT *v, IDispatch **pdisp) {
/*
if ((v->vt & VT_ARRAY) != 0) {
*disp = new DispArrayImpl(*v);
(*disp)->AddRef();
return true;
}
*/
if ((v->vt & VT_TYPEMASK) == VT_DISPATCH) {
IDispatch *disp = ((v->vt & VT_BYREF) != 0) ? *v->ppdispVal : v->pdispVal;
if (!disp) return false;
disp->AddRef();
*pdisp = disp;
return true;
}
if ((v->vt & VT_TYPEMASK) == VT_UNKNOWN) {
return UnknownDispGet(((v->vt & VT_BYREF) != 0) ? *v->ppunkVal : v->punkVal, pdisp);
}
return false;
}
//-------------------------------------------------------------------------------------------------------
// DispArrayImpl implemetation
HRESULT STDMETHODCALLTYPE DispArrayImpl::GetIDsOfNames(REFIID riid, LPOLESTR *rgszNames, UINT cNames, LCID lcid, DISPID *rgDispId) {
if (cNames != 1 || !rgszNames[0]) return DISP_E_UNKNOWNNAME;
LPOLESTR name = rgszNames[0];
if (wcscmp(name, L"length") == 0) *rgDispId = 1;
else return DISP_E_UNKNOWNNAME;
return S_OK;
}
HRESULT STDMETHODCALLTYPE DispArrayImpl::Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr) {
HRESULT hrcode = S_OK;
UINT argcnt = pDispParams->cArgs;
VARIANT *args = pDispParams->rgvarg;
if ((var.vt & VT_ARRAY) == 0) return E_NOTIMPL;
SAFEARRAY *arr = ((var.vt & VT_BYREF) != 0) ? *var.pparray : var.parray;
switch (dispIdMember) {
case 1: {
if (pVarResult) {
pVarResult->vt = VT_INT;
pVarResult->intVal = (INT)(arr ? arr->rgsabound[0].cElements : 0);
}
return hrcode; }
}
return E_NOTIMPL;
}
//-------------------------------------------------------------------------------------------------------
// DispEnumImpl implemetation
HRESULT STDMETHODCALLTYPE DispEnumImpl::GetIDsOfNames(REFIID riid, LPOLESTR *rgszNames, UINT cNames, LCID lcid, DISPID *rgDispId) {
if (cNames != 1 || !rgszNames[0]) return DISP_E_UNKNOWNNAME;
LPOLESTR name = rgszNames[0];
if (wcscmp(name, L"Next") == 0) *rgDispId = 1;
else if (wcscmp(name, L"Skip") == 0) *rgDispId = 2;
else if (wcscmp(name, L"Reset") == 0) *rgDispId = 3;
else if (wcscmp(name, L"Clone") == 0) *rgDispId = 4;
else return DISP_E_UNKNOWNNAME;
return S_OK;
}
HRESULT STDMETHODCALLTYPE DispEnumImpl::Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr) {
HRESULT hrcode = S_OK;
UINT argcnt = pDispParams->cArgs;
VARIANT *args = pDispParams->rgvarg;
switch (dispIdMember) {
case 1: {
CComVariant arr;
ULONG fetched, celt = (argcnt > 0) ? Variant2Int(args[argcnt - 1], (ULONG)1) : 1;
if (!pVarResult || celt == 0) hrcode = E_INVALIDARG;
if SUCCEEDED(hrcode) hrcode = arr.ArrayCreate(VT_VARIANT, celt);
if SUCCEEDED(hrcode) hrcode = ptr->Next(celt, arr.ArrayGet<VARIANT>(0), &fetched);
if SUCCEEDED(hrcode) {
if (fetched == 0) pVarResult->vt = VT_EMPTY;
else if (fetched == 1) {
VARIANT *v = arr.ArrayGet<VARIANT>(0);
*pVarResult = *v;
v->vt = VT_EMPTY;
}
else {
if (fetched < celt) hrcode = arr.ArrayResize(fetched);
if SUCCEEDED(hrcode) arr.Detach(pVarResult);
}
}
return hrcode; }
case 2: {
if (pVarResult) pVarResult->vt = VT_EMPTY;
ULONG celt = (argcnt > 0) ? Variant2Int(args[argcnt - 1], (ULONG)1) : 1;
return ptr->Skip(celt);
}
case 3: {
if (pVarResult) pVarResult->vt = VT_EMPTY;
return ptr->Reset();
}
case 4: {
if (!pVarResult) hrcode = E_INVALIDARG;
std::auto_ptr<DispEnumImpl> disp;
if SUCCEEDED(hrcode) hrcode = ptr->Clone(&disp->ptr);
if SUCCEEDED(hrcode) {
pVarResult->vt = VT_DISPATCH;
pVarResult->pdispVal = disp.release();
pVarResult->pdispVal->AddRef();
}
return hrcode; }
}
return E_NOTIMPL;
}
//-------------------------------------------------------------------------------------------------------
// DispObjectImpl implemetation
HRESULT STDMETHODCALLTYPE DispObjectImpl::GetIDsOfNames(REFIID riid, LPOLESTR *rgszNames, UINT cNames, LCID lcid, DISPID *rgDispId) {
if (cNames != 1 || !rgszNames[0]) return DISP_E_UNKNOWNNAME;
std::wstring name(rgszNames[0]);
name_ptr &ptr = names[name];
if (!ptr) {
ptr.reset(new name_t(dispid_next++, name));
index.insert(index_t::value_type(ptr->dispid, ptr));
}
*rgDispId = ptr->dispid;
return S_OK;
}
HRESULT STDMETHODCALLTYPE DispObjectImpl::Invoke(DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr) {
Isolate *isolate = Isolate::GetCurrent();
Local<Context> ctx = isolate->GetCurrentContext();
Local<Object> self = obj.Get(isolate);
Local<Value> name, val, ret;
// Prepare name by member id
if (dispIdMember != DISPID_VALUE && !index.empty()) {
index_t::const_iterator p = index.find(dispIdMember);
if (p == index.end()) return DISP_E_MEMBERNOTFOUND;
name_t &info = *p->second;
name = v8str(isolate, info.name.c_str());
}
// Set property value
if ((wFlags & DISPATCH_PROPERTYPUT) != 0) {
UINT argcnt = pDispParams->cArgs;
VARIANT *key = (argcnt > 1) ? &pDispParams->rgvarg[--argcnt] : nullptr;
if (argcnt > 0) val = Variant2Value(isolate, pDispParams->rgvarg[--argcnt], true);
else val = Undefined(isolate);
bool rcode;
// Set simple object property value
if (!key) {
if (name.IsEmpty()) return DISP_E_MEMBERNOTFOUND;
rcode = self->Set(ctx, name, val).FromMaybe(false);
}
// Set object/array item value
else {
Local<Object> target;
if (name.IsEmpty()) target = self;
else {
Local<Value> obj;
if (self->Get(ctx, name).ToLocal(&obj) && !obj.IsEmpty()) target = Local<Object>::Cast(obj);
if (target.IsEmpty()) return DISP_E_BADCALLEE;
}
LONG index = Variant2Int<LONG>(*key, -1);
if (index >= 0) rcode = target->Set(ctx, (uint32_t)index, val).FromMaybe(false);
else rcode = target->Set(ctx, Variant2Value(isolate, *key, false), val).FromMaybe(false);
}
// Store result
if (pVarResult) {
pVarResult->vt = VT_BOOL;
pVarResult->boolVal = rcode ? VARIANT_TRUE : VARIANT_FALSE;
}
return S_OK;
}
// Prepare property item
if (name.IsEmpty()) val = self;
else self->Get(ctx, name).ToLocal(&val);
// Call property as method
if ((wFlags & DISPATCH_METHOD) != 0) {
wFlags = 0;
NodeArguments args(isolate, pDispParams, true, reverse_arguments);
int argcnt = (int)args.items.size();
Local<Value> *argptr = (argcnt > 0) ? &args.items[0] : nullptr;
if (val->IsFunction()) {
Local<Function> func = Local<Function>::Cast(val);
if (func.IsEmpty()) return DISP_E_BADCALLEE;
func->Call(isolate->GetCurrentContext(), self, argcnt, argptr).ToLocal(&ret);
}
else if (val->IsObject()) {
wFlags = DISPATCH_PROPERTYGET;
//Local<Object> target = val->ToObject();
//target->CallAsFunction(isolate->GetCurrentContext(), target, args.items.size(), &args.items[0]).ToLocal(&ret);
}
else {
ret = val;
}
}
// Get property value
if ((wFlags & DISPATCH_PROPERTYGET) != 0) {
if (pDispParams->cArgs == 1) {
Local<Object> target;
if (!val.IsEmpty()) target = Local<Object>::Cast(val);
if (target.IsEmpty()) return DISP_E_BADCALLEE;
VARIANT &key = pDispParams->rgvarg[0];
LONG index = Variant2Int<LONG>(key, -1);
if (index >= 0) target->Get(ctx, (uint32_t)index).ToLocal(&ret);
else target->Get(ctx, Variant2Value(isolate, key, false)).ToLocal(&ret);
}
else {
ret = val;
}
}
// Store result
if (pVarResult) {
Value2Variant(isolate, ret, *pVarResult, VT_NULL);
}
return S_OK;
}
/*
* Microsoft OLE Date type:
* https://docs.microsoft.com/en-us/previous-versions/visualstudio/visual-studio-2008/82ab7w69(v=vs.90)
*/
double FromOleDate(double oleDate) {
double posixDate = oleDate - 25569; // days from 1899 dec 30
posixDate *= 24 * 60 * 60 * 1000; // days to milliseconds
return posixDate;
}
double ToOleDate(double posixDate) {
double oleDate = posixDate / (24 * 60 * 60 * 1000); // milliseconds to days
oleDate += 25569; // days from 1899 dec 30
return oleDate;
}
//-------------------------------------------------------------------------------------------------------