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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "fpdfsdk/javascript/cjs_global.h"
#include <map>
#include <memory>
#include <utility>
#include <vector>
#include "core/fxcrt/fx_extension.h"
#include "fpdfsdk/javascript/JS_Define.h"
#include "fpdfsdk/javascript/JS_GlobalData.h"
#include "fpdfsdk/javascript/JS_KeyValue.h"
#include "fpdfsdk/javascript/JS_Object.h"
#include "fpdfsdk/javascript/JS_Value.h"
#include "fpdfsdk/javascript/cjs_event_context.h"
#include "fpdfsdk/javascript/cjs_eventhandler.h"
#include "fpdfsdk/javascript/resource.h"
namespace {
WideString PropFromV8Prop(v8::Local<v8::String> property) {
v8::String::Utf8Value utf8_value(property);
return WideString::FromUTF8(ByteStringView(*utf8_value, utf8_value.length()));
}
template <class Alt>
void JSSpecialPropQuery(const char*,
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Integer>& info) {
CJS_Runtime* pRuntime =
CJS_Runtime::CurrentRuntimeFromIsolate(info.GetIsolate());
if (!pRuntime)
return;
CJS_Object* pJSObj =
static_cast<CJS_Object*>(pRuntime->GetObjectPrivate(info.Holder()));
if (!pJSObj)
return;
Alt* pObj = reinterpret_cast<Alt*>(pJSObj->GetEmbedObject());
CJS_Return result = pObj->QueryProperty(PropFromV8Prop(property).c_str());
info.GetReturnValue().Set(!result.HasError() ? 4 : 0);
}
template <class Alt>
void JSSpecialPropGet(const char* class_name,
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
CJS_Runtime* pRuntime =
CJS_Runtime::CurrentRuntimeFromIsolate(info.GetIsolate());
if (!pRuntime)
return;
CJS_Object* pJSObj =
static_cast<CJS_Object*>(pRuntime->GetObjectPrivate(info.Holder()));
if (!pJSObj)
return;
Alt* pObj = reinterpret_cast<Alt*>(pJSObj->GetEmbedObject());
CJS_Return result =
pObj->GetProperty(pRuntime, PropFromV8Prop(property).c_str());
if (result.HasError()) {
pRuntime->Error(
JSFormatErrorString(class_name, "GetProperty", result.Error()));
return;
}
if (result.HasReturn())
info.GetReturnValue().Set(result.Return());
}
template <class Alt>
void JSSpecialPropPut(const char* class_name,
v8::Local<v8::String> property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<v8::Value>& info) {
CJS_Runtime* pRuntime =
CJS_Runtime::CurrentRuntimeFromIsolate(info.GetIsolate());
if (!pRuntime)
return;
CJS_Object* pJSObj =
static_cast<CJS_Object*>(pRuntime->GetObjectPrivate(info.Holder()));
if (!pJSObj)
return;
Alt* pObj = reinterpret_cast<Alt*>(pJSObj->GetEmbedObject());
CJS_Return result =
pObj->SetProperty(pRuntime, PropFromV8Prop(property).c_str(), value);
if (result.HasError()) {
pRuntime->Error(
JSFormatErrorString(class_name, "PutProperty", result.Error()));
}
}
template <class Alt>
void JSSpecialPropDel(const char* class_name,
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Boolean>& info) {
CJS_Runtime* pRuntime =
CJS_Runtime::CurrentRuntimeFromIsolate(info.GetIsolate());
if (!pRuntime)
return;
CJS_Object* pJSObj =
static_cast<CJS_Object*>(pRuntime->GetObjectPrivate(info.Holder()));
if (!pJSObj)
return;
Alt* pObj = reinterpret_cast<Alt*>(pJSObj->GetEmbedObject());
CJS_Return result =
pObj->DelProperty(pRuntime, PropFromV8Prop(property).c_str());
if (result.HasError()) {
// TODO(dsinclair): Should this set the pRuntime->Error result?
// ByteString cbName;
// cbName.Format("%s.%s", class_name, "DelProperty");
}
}
struct JSGlobalData {
JSGlobalData();
~JSGlobalData();
JS_GlobalDataType nType;
double dData;
bool bData;
ByteString sData;
v8::Global<v8::Object> pData;
bool bPersistent;
bool bDeleted;
};
class JSGlobalAlternate : public CJS_EmbedObj {
public:
explicit JSGlobalAlternate(CJS_Object* pJSObject);
~JSGlobalAlternate() override;
CJS_Return setPersistent(CJS_Runtime* pRuntime,
const std::vector<v8::Local<v8::Value>>& params);
CJS_Return QueryProperty(const wchar_t* propname);
CJS_Return GetProperty(CJS_Runtime* pRuntime, const wchar_t* propname);
CJS_Return SetProperty(CJS_Runtime* pRuntime,
const wchar_t* propname,
v8::Local<v8::Value> vp);
CJS_Return DelProperty(CJS_Runtime* pRuntime, const wchar_t* propname);
void Initial(CPDFSDK_FormFillEnvironment* pFormFillEnv);
private:
void UpdateGlobalPersistentVariables();
void CommitGlobalPersisitentVariables(CJS_Runtime* pRuntime);
void DestroyGlobalPersisitentVariables();
CJS_Return SetGlobalVariables(const ByteString& propname,
JS_GlobalDataType nType,
double dData,
bool bData,
const ByteString& sData,
v8::Local<v8::Object> pData,
bool bDefaultPersistent);
void ObjectToArray(CJS_Runtime* pRuntime,
v8::Local<v8::Object> pObj,
CJS_GlobalVariableArray& array);
void PutObjectProperty(v8::Local<v8::Object> obj, CJS_KeyValue* pData);
std::map<ByteString, std::unique_ptr<JSGlobalData>> m_MapGlobal;
WideString m_sFilePath;
CJS_GlobalData* m_pGlobalData;
CPDFSDK_FormFillEnvironment::ObservedPtr m_pFormFillEnv;
};
} // namespace
JSConstSpec CJS_Global::ConstSpecs[] = {{0, JSConstSpec::Number, 0, 0}};
JSPropertySpec CJS_Global::PropertySpecs[] = {{0, 0, 0}};
JSMethodSpec CJS_Global::MethodSpecs[] = {
{"setPersistent", setPersistent_static},
{0, 0}};
const char* CJS_Global::g_pClassName = "global";
int CJS_Global::g_nObjDefnID = -1;
// static
void CJS_Global::setPersistent_static(
const v8::FunctionCallbackInfo<v8::Value>& info) {
JSMethod<JSGlobalAlternate, &JSGlobalAlternate::setPersistent>(
"setPersistent", "global", info);
}
void CJS_Global::InitInstance(IJS_Runtime* pIRuntime) {
CJS_Runtime* pRuntime = static_cast<CJS_Runtime*>(pIRuntime);
JSGlobalAlternate* pGlobal =
static_cast<JSGlobalAlternate*>(GetEmbedObject());
pGlobal->Initial(pRuntime->GetFormFillEnv());
}
void CJS_Global::queryprop_static(
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Integer>& info) {
JSSpecialPropQuery<JSGlobalAlternate>("global", property, info);
}
void CJS_Global::getprop_static(
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Value>& info) {
JSSpecialPropGet<JSGlobalAlternate>("global", property, info);
}
void CJS_Global::putprop_static(
v8::Local<v8::String> property,
v8::Local<v8::Value> value,
const v8::PropertyCallbackInfo<v8::Value>& info) {
JSSpecialPropPut<JSGlobalAlternate>("global", property, value, info);
}
void CJS_Global::delprop_static(
v8::Local<v8::String> property,
const v8::PropertyCallbackInfo<v8::Boolean>& info) {
JSSpecialPropDel<JSGlobalAlternate>("global", property, info);
}
void CJS_Global::DefineAllProperties(CFXJS_Engine* pEngine) {
pEngine->DefineObjAllProperties(
g_nObjDefnID, CJS_Global::queryprop_static, CJS_Global::getprop_static,
CJS_Global::putprop_static, CJS_Global::delprop_static);
}
void CJS_Global::DefineJSObjects(CFXJS_Engine* pEngine, FXJSOBJTYPE eObjType) {
g_nObjDefnID = pEngine->DefineObj(
CJS_Global::g_pClassName, eObjType,
JSConstructor<CJS_Global, JSGlobalAlternate>, JSDestructor<CJS_Global>);
DefineConsts(pEngine, g_nObjDefnID, ConstSpecs);
DefineProps(pEngine, g_nObjDefnID, PropertySpecs);
DefineMethods(pEngine, g_nObjDefnID, MethodSpecs);
DefineAllProperties(pEngine);
}
JSGlobalData::JSGlobalData()
: nType(JS_GlobalDataType::NUMBER),
dData(0),
bData(false),
sData(""),
bPersistent(false),
bDeleted(false) {}
JSGlobalData::~JSGlobalData() {
pData.Reset();
}
JSGlobalAlternate::JSGlobalAlternate(CJS_Object* pJSObject)
: CJS_EmbedObj(pJSObject), m_pFormFillEnv(nullptr) {}
JSGlobalAlternate::~JSGlobalAlternate() {
DestroyGlobalPersisitentVariables();
m_pGlobalData->Release();
}
void JSGlobalAlternate::Initial(CPDFSDK_FormFillEnvironment* pFormFillEnv) {
m_pFormFillEnv.Reset(pFormFillEnv);
m_pGlobalData = CJS_GlobalData::GetRetainedInstance(pFormFillEnv);
UpdateGlobalPersistentVariables();
}
CJS_Return JSGlobalAlternate::QueryProperty(const wchar_t* propname) {
return CJS_Return(WideString(propname) != L"setPersistent");
}
CJS_Return JSGlobalAlternate::DelProperty(CJS_Runtime* pRuntime,
const wchar_t* propname) {
auto it = m_MapGlobal.find(ByteString::FromUnicode(propname));
if (it == m_MapGlobal.end())
return CJS_Return(false);
it->second->bDeleted = true;
return CJS_Return(true);
}
CJS_Return JSGlobalAlternate::GetProperty(CJS_Runtime* pRuntime,
const wchar_t* propname) {
auto it = m_MapGlobal.find(ByteString::FromUnicode(propname));
if (it == m_MapGlobal.end())
return CJS_Return(true);
JSGlobalData* pData = it->second.get();
if (pData->bDeleted)
return CJS_Return(true);
switch (pData->nType) {
case JS_GlobalDataType::NUMBER:
return CJS_Return(pRuntime->NewNumber(pData->dData));
case JS_GlobalDataType::BOOLEAN:
return CJS_Return(pRuntime->NewBoolean(pData->bData));
case JS_GlobalDataType::STRING:
return CJS_Return(pRuntime->NewString(
WideString::FromLocal(pData->sData.c_str()).c_str()));
case JS_GlobalDataType::OBJECT:
return CJS_Return(
v8::Local<v8::Object>::New(pRuntime->GetIsolate(), pData->pData));
case JS_GlobalDataType::NULLOBJ:
return CJS_Return(pRuntime->NewNull());
default:
break;
}
return CJS_Return(false);
}
CJS_Return JSGlobalAlternate::SetProperty(CJS_Runtime* pRuntime,
const wchar_t* propname,
v8::Local<v8::Value> vp) {
ByteString sPropName = ByteString::FromUnicode(propname);
if (vp->IsNumber()) {
return SetGlobalVariables(sPropName, JS_GlobalDataType::NUMBER,
pRuntime->ToDouble(vp), false, "",
v8::Local<v8::Object>(), false);
}
if (vp->IsBoolean()) {
return SetGlobalVariables(sPropName, JS_GlobalDataType::BOOLEAN, 0,
pRuntime->ToBoolean(vp), "",
v8::Local<v8::Object>(), false);
}
if (vp->IsString()) {
return SetGlobalVariables(
sPropName, JS_GlobalDataType::STRING, 0, false,
ByteString::FromUnicode(pRuntime->ToWideString(vp)),
v8::Local<v8::Object>(), false);
}
if (vp->IsObject()) {
return SetGlobalVariables(sPropName, JS_GlobalDataType::OBJECT, 0, false,
"", pRuntime->ToObject(vp), false);
}
if (vp->IsNull()) {
return SetGlobalVariables(sPropName, JS_GlobalDataType::NULLOBJ, 0, false,
"", v8::Local<v8::Object>(), false);
}
if (vp->IsUndefined()) {
DelProperty(pRuntime, propname);
return CJS_Return(true);
}
return CJS_Return(false);
}
CJS_Return JSGlobalAlternate::setPersistent(
CJS_Runtime* pRuntime,
const std::vector<v8::Local<v8::Value>>& params) {
if (params.size() != 2)
return CJS_Return(JSGetStringFromID(IDS_STRING_JSPARAMERROR));
auto it = m_MapGlobal.find(
ByteString::FromUnicode(pRuntime->ToWideString(params[0])));
if (it == m_MapGlobal.end() || it->second->bDeleted)
return CJS_Return(JSGetStringFromID(IDS_STRING_JSNOGLOBAL));
it->second->bPersistent = pRuntime->ToBoolean(params[1]);
return CJS_Return(true);
}
void JSGlobalAlternate::UpdateGlobalPersistentVariables() {
CJS_Runtime* pRuntime =
static_cast<CJS_Runtime*>(CFXJS_Engine::CurrentEngineFromIsolate(
m_pJSObject->ToV8Object()->GetIsolate()));
for (int i = 0, sz = m_pGlobalData->GetSize(); i < sz; i++) {
CJS_GlobalData_Element* pData = m_pGlobalData->GetAt(i);
switch (pData->data.nType) {
case JS_GlobalDataType::NUMBER:
SetGlobalVariables(pData->data.sKey, JS_GlobalDataType::NUMBER,
pData->data.dData, false, "",
v8::Local<v8::Object>(), pData->bPersistent == 1);
pRuntime->PutObjectProperty(m_pJSObject->ToV8Object(),
pData->data.sKey.UTF8Decode(),
pRuntime->NewNumber(pData->data.dData));
break;
case JS_GlobalDataType::BOOLEAN:
SetGlobalVariables(pData->data.sKey, JS_GlobalDataType::BOOLEAN, 0,
pData->data.bData == 1, "", v8::Local<v8::Object>(),
pData->bPersistent == 1);
pRuntime->PutObjectProperty(
m_pJSObject->ToV8Object(), pData->data.sKey.UTF8Decode(),
pRuntime->NewBoolean(pData->data.bData == 1));
break;
case JS_GlobalDataType::STRING:
SetGlobalVariables(pData->data.sKey, JS_GlobalDataType::STRING, 0,
false, pData->data.sData, v8::Local<v8::Object>(),
pData->bPersistent == 1);
pRuntime->PutObjectProperty(
m_pJSObject->ToV8Object(), pData->data.sKey.UTF8Decode(),
pRuntime->NewString(pData->data.sData.UTF8Decode().AsStringView()));
break;
case JS_GlobalDataType::OBJECT: {
v8::Local<v8::Object> pObj = pRuntime->NewFxDynamicObj(-1);
if (!pObj.IsEmpty()) {
PutObjectProperty(pObj, &pData->data);
SetGlobalVariables(pData->data.sKey, JS_GlobalDataType::OBJECT, 0,
false, "", pObj, pData->bPersistent == 1);
pRuntime->PutObjectProperty(m_pJSObject->ToV8Object(),
pData->data.sKey.UTF8Decode(), pObj);
}
} break;
case JS_GlobalDataType::NULLOBJ:
SetGlobalVariables(pData->data.sKey, JS_GlobalDataType::NULLOBJ, 0,
false, "", v8::Local<v8::Object>(),
pData->bPersistent == 1);
pRuntime->PutObjectProperty(m_pJSObject->ToV8Object(),
pData->data.sKey.UTF8Decode(),
pRuntime->NewNull());
break;
}
}
}
void JSGlobalAlternate::CommitGlobalPersisitentVariables(
CJS_Runtime* pRuntime) {
for (const auto& iter : m_MapGlobal) {
ByteString name = iter.first;
JSGlobalData* pData = iter.second.get();
if (pData->bDeleted) {
m_pGlobalData->DeleteGlobalVariable(name);
continue;
}
switch (pData->nType) {
case JS_GlobalDataType::NUMBER:
m_pGlobalData->SetGlobalVariableNumber(name, pData->dData);
m_pGlobalData->SetGlobalVariablePersistent(name, pData->bPersistent);
break;
case JS_GlobalDataType::BOOLEAN:
m_pGlobalData->SetGlobalVariableBoolean(name, pData->bData);
m_pGlobalData->SetGlobalVariablePersistent(name, pData->bPersistent);
break;
case JS_GlobalDataType::STRING:
m_pGlobalData->SetGlobalVariableString(name, pData->sData);
m_pGlobalData->SetGlobalVariablePersistent(name, pData->bPersistent);
break;
case JS_GlobalDataType::OBJECT: {
CJS_GlobalVariableArray array;
v8::Local<v8::Object> obj = v8::Local<v8::Object>::New(
GetJSObject()->GetIsolate(), pData->pData);
ObjectToArray(pRuntime, obj, array);
m_pGlobalData->SetGlobalVariableObject(name, array);
m_pGlobalData->SetGlobalVariablePersistent(name, pData->bPersistent);
} break;
case JS_GlobalDataType::NULLOBJ:
m_pGlobalData->SetGlobalVariableNull(name);
m_pGlobalData->SetGlobalVariablePersistent(name, pData->bPersistent);
break;
}
}
}
void JSGlobalAlternate::ObjectToArray(CJS_Runtime* pRuntime,
v8::Local<v8::Object> pObj,
CJS_GlobalVariableArray& array) {
std::vector<WideString> pKeyList = pRuntime->GetObjectPropertyNames(pObj);
for (const auto& ws : pKeyList) {
ByteString sKey = ws.UTF8Encode();
v8::Local<v8::Value> v = pRuntime->GetObjectProperty(pObj, ws);
if (v->IsNumber()) {
CJS_KeyValue* pObjElement = new CJS_KeyValue;
pObjElement->nType = JS_GlobalDataType::NUMBER;
pObjElement->sKey = sKey;
pObjElement->dData = pRuntime->ToDouble(v);
array.Add(pObjElement);
continue;
}
if (v->IsBoolean()) {
CJS_KeyValue* pObjElement = new CJS_KeyValue;
pObjElement->nType = JS_GlobalDataType::BOOLEAN;
pObjElement->sKey = sKey;
pObjElement->dData = pRuntime->ToBoolean(v);
array.Add(pObjElement);
continue;
}
if (v->IsString()) {
ByteString sValue = ByteString::FromUnicode(pRuntime->ToWideString(v));
CJS_KeyValue* pObjElement = new CJS_KeyValue;
pObjElement->nType = JS_GlobalDataType::STRING;
pObjElement->sKey = sKey;
pObjElement->sData = sValue;
array.Add(pObjElement);
continue;
}
if (v->IsObject()) {
CJS_KeyValue* pObjElement = new CJS_KeyValue;
pObjElement->nType = JS_GlobalDataType::OBJECT;
pObjElement->sKey = sKey;
ObjectToArray(pRuntime, pRuntime->ToObject(v), pObjElement->objData);
array.Add(pObjElement);
continue;
}
if (v->IsNull()) {
CJS_KeyValue* pObjElement = new CJS_KeyValue;
pObjElement->nType = JS_GlobalDataType::NULLOBJ;
pObjElement->sKey = sKey;
array.Add(pObjElement);
}
}
}
void JSGlobalAlternate::PutObjectProperty(v8::Local<v8::Object> pObj,
CJS_KeyValue* pData) {
CJS_Runtime* pRuntime = CJS_Runtime::CurrentRuntimeFromIsolate(
m_pJSObject->ToV8Object()->GetIsolate());
for (int i = 0, sz = pData->objData.Count(); i < sz; i++) {
CJS_KeyValue* pObjData = pData->objData.GetAt(i);
switch (pObjData->nType) {
case JS_GlobalDataType::NUMBER:
pRuntime->PutObjectProperty(pObj, pObjData->sKey.UTF8Decode(),
pRuntime->NewNumber(pObjData->dData));
break;
case JS_GlobalDataType::BOOLEAN:
pRuntime->PutObjectProperty(pObj, pObjData->sKey.UTF8Decode(),
pRuntime->NewBoolean(pObjData->bData == 1));
break;
case JS_GlobalDataType::STRING:
pRuntime->PutObjectProperty(
pObj, pObjData->sKey.UTF8Decode(),
pRuntime->NewString(pObjData->sData.UTF8Decode().AsStringView()));
break;
case JS_GlobalDataType::OBJECT: {
v8::Local<v8::Object> pNewObj = pRuntime->NewFxDynamicObj(-1);
if (!pNewObj.IsEmpty()) {
PutObjectProperty(pNewObj, pObjData);
pRuntime->PutObjectProperty(pObj, pObjData->sKey.UTF8Decode(),
pNewObj);
}
} break;
case JS_GlobalDataType::NULLOBJ:
pRuntime->PutObjectProperty(pObj, pObjData->sKey.UTF8Decode(),
pRuntime->NewNull());
break;
}
}
}
void JSGlobalAlternate::DestroyGlobalPersisitentVariables() {
m_MapGlobal.clear();
}
CJS_Return JSGlobalAlternate::SetGlobalVariables(const ByteString& propname,
JS_GlobalDataType nType,
double dData,
bool bData,
const ByteString& sData,
v8::Local<v8::Object> pData,
bool bDefaultPersistent) {
if (propname.IsEmpty())
return CJS_Return(false);
auto it = m_MapGlobal.find(propname);
if (it != m_MapGlobal.end()) {
JSGlobalData* pTemp = it->second.get();
if (pTemp->bDeleted || pTemp->nType != nType) {
pTemp->dData = 0;
pTemp->bData = 0;
pTemp->sData = "";
pTemp->nType = nType;
}
pTemp->bDeleted = false;
switch (nType) {
case JS_GlobalDataType::NUMBER:
pTemp->dData = dData;
break;
case JS_GlobalDataType::BOOLEAN:
pTemp->bData = bData;
break;
case JS_GlobalDataType::STRING:
pTemp->sData = sData;
break;
case JS_GlobalDataType::OBJECT:
pTemp->pData.Reset(pData->GetIsolate(), pData);
break;
case JS_GlobalDataType::NULLOBJ:
break;
default:
return CJS_Return(false);
}
return CJS_Return(true);
}
auto pNewData = pdfium::MakeUnique<JSGlobalData>();
switch (nType) {
case JS_GlobalDataType::NUMBER:
pNewData->nType = JS_GlobalDataType::NUMBER;
pNewData->dData = dData;
pNewData->bPersistent = bDefaultPersistent;
break;
case JS_GlobalDataType::BOOLEAN:
pNewData->nType = JS_GlobalDataType::BOOLEAN;
pNewData->bData = bData;
pNewData->bPersistent = bDefaultPersistent;
break;
case JS_GlobalDataType::STRING:
pNewData->nType = JS_GlobalDataType::STRING;
pNewData->sData = sData;
pNewData->bPersistent = bDefaultPersistent;
break;
case JS_GlobalDataType::OBJECT:
pNewData->nType = JS_GlobalDataType::OBJECT;
pNewData->pData.Reset(pData->GetIsolate(), pData);
pNewData->bPersistent = bDefaultPersistent;
break;
case JS_GlobalDataType::NULLOBJ:
pNewData->nType = JS_GlobalDataType::NULLOBJ;
pNewData->bPersistent = bDefaultPersistent;
break;
default:
return CJS_Return(false);
}
m_MapGlobal[propname] = std::move(pNewData);
return CJS_Return(true);
}