// Copyright 2017 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 "fxjs/cjs_v8.h" #ifdef PDF_ENABLE_XFA #include "fxjs/cfxjse_context.h" #include "xfa/fxfa/parser/cxfa_object.h" #endif // PDF_ENABLE_XFA CJS_V8::CJS_V8(v8::Isolate* isolate) : m_isolate(isolate) {} CJS_V8::~CJS_V8() { m_V8PersistentContext.Reset(); } v8::Local<v8::Value> CJS_V8::GetObjectProperty( v8::Local<v8::Object> pObj, const WideString& wsPropertyName) { if (pObj.IsEmpty()) return v8::Local<v8::Value>(); v8::Local<v8::Value> val; if (!pObj->Get(m_isolate->GetCurrentContext(), NewString(wsPropertyName.AsStringView())) .ToLocal(&val)) return v8::Local<v8::Value>(); return val; } std::vector<WideString> CJS_V8::GetObjectPropertyNames( v8::Local<v8::Object> pObj) { if (pObj.IsEmpty()) return std::vector<WideString>(); v8::Local<v8::Array> val; v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); if (!pObj->GetPropertyNames(context).ToLocal(&val)) return std::vector<WideString>(); std::vector<WideString> result; for (uint32_t i = 0; i < val->Length(); ++i) { result.push_back(ToWideString(val->Get(context, i).ToLocalChecked())); } return result; } void CJS_V8::PutObjectProperty(v8::Local<v8::Object> pObj, const WideString& wsPropertyName, v8::Local<v8::Value> pPut) { if (pObj.IsEmpty()) return; pObj->Set(m_isolate->GetCurrentContext(), NewString(wsPropertyName.AsStringView()), pPut) .FromJust(); } v8::Local<v8::Array> CJS_V8::NewArray() { return v8::Array::New(m_isolate); } unsigned CJS_V8::PutArrayElement(v8::Local<v8::Array> pArray, unsigned index, v8::Local<v8::Value> pValue) { if (pArray.IsEmpty()) return 0; if (pArray->Set(m_isolate->GetCurrentContext(), index, pValue).IsNothing()) return 0; return 1; } v8::Local<v8::Value> CJS_V8::GetArrayElement(v8::Local<v8::Array> pArray, unsigned index) { if (pArray.IsEmpty()) return v8::Local<v8::Value>(); v8::Local<v8::Value> val; if (!pArray->Get(m_isolate->GetCurrentContext(), index).ToLocal(&val)) return v8::Local<v8::Value>(); return val; } unsigned CJS_V8::GetArrayLength(v8::Local<v8::Array> pArray) { if (pArray.IsEmpty()) return 0; return pArray->Length(); } v8::Local<v8::Context> CJS_V8::NewLocalContext() { return v8::Local<v8::Context>::New(m_isolate, m_V8PersistentContext); } v8::Local<v8::Context> CJS_V8::GetPersistentContext() { return m_V8PersistentContext.Get(m_isolate); } v8::Local<v8::Number> CJS_V8::NewNumber(int number) { return v8::Int32::New(m_isolate, number); } v8::Local<v8::Number> CJS_V8::NewNumber(double number) { return v8::Number::New(m_isolate, number); } v8::Local<v8::Number> CJS_V8::NewNumber(float number) { return v8::Number::New(m_isolate, (float)number); } v8::Local<v8::Boolean> CJS_V8::NewBoolean(bool b) { return v8::Boolean::New(m_isolate, b); } v8::Local<v8::String> CJS_V8::NewString(const ByteStringView& str) { v8::Isolate* pIsolate = m_isolate ? m_isolate : v8::Isolate::GetCurrent(); return v8::String::NewFromUtf8(pIsolate, str.unterminated_c_str(), v8::NewStringType::kNormal, str.GetLength()) .ToLocalChecked(); } v8::Local<v8::String> CJS_V8::NewString(const WideStringView& str) { // Conversion from pdfium's wchar_t wide-strings to v8's uint16_t // wide-strings isn't handled by v8, so use UTF8 as a common // intermediate format. return NewString(FX_UTF8Encode(str).AsStringView()); } v8::Local<v8::Value> CJS_V8::NewNull() { return v8::Null(m_isolate); } v8::Local<v8::Value> CJS_V8::NewUndefined() { return v8::Undefined(m_isolate); } v8::Local<v8::Date> CJS_V8::NewDate(double d) { return v8::Date::New(m_isolate->GetCurrentContext(), d) .ToLocalChecked() .As<v8::Date>(); } int CJS_V8::ToInt32(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty()) return 0; v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); v8::MaybeLocal<v8::Int32> maybe_int32 = pValue->ToInt32(context); if (maybe_int32.IsEmpty()) return 0; return maybe_int32.ToLocalChecked()->Value(); } bool CJS_V8::ToBoolean(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty()) return false; v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); v8::MaybeLocal<v8::Boolean> maybe_boolean = pValue->ToBoolean(context); if (maybe_boolean.IsEmpty()) return false; return maybe_boolean.ToLocalChecked()->Value(); } double CJS_V8::ToDouble(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty()) return 0.0; v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); v8::MaybeLocal<v8::Number> maybe_number = pValue->ToNumber(context); if (maybe_number.IsEmpty()) return 0.0; return maybe_number.ToLocalChecked()->Value(); } WideString CJS_V8::ToWideString(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty()) return WideString(); v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); v8::MaybeLocal<v8::String> maybe_string = pValue->ToString(context); if (maybe_string.IsEmpty()) return WideString(); v8::String::Utf8Value s(m_isolate, maybe_string.ToLocalChecked()); return WideString::FromUTF8(ByteStringView(*s, s.length())); } ByteString CJS_V8::ToByteString(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty()) return ByteString(); v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); v8::MaybeLocal<v8::String> maybe_string = pValue->ToString(context); if (maybe_string.IsEmpty()) return ByteString(); v8::String::Utf8Value s(m_isolate, maybe_string.ToLocalChecked()); return ByteString(*s); } v8::Local<v8::Object> CJS_V8::ToObject(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty() || !pValue->IsObject()) return v8::Local<v8::Object>(); v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); return pValue->ToObject(context).ToLocalChecked(); } v8::Local<v8::Array> CJS_V8::ToArray(v8::Local<v8::Value> pValue) { if (pValue.IsEmpty() || !pValue->IsArray()) return v8::Local<v8::Array>(); v8::Local<v8::Context> context = m_isolate->GetCurrentContext(); return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked()); } void CJS_V8::SetConstArray(const WideString& name, v8::Local<v8::Array> array) { m_ConstArrays[name] = v8::Global<v8::Array>(GetIsolate(), array); } v8::Local<v8::Array> CJS_V8::GetConstArray(const WideString& name) { return v8::Local<v8::Array>::New(GetIsolate(), m_ConstArrays[name]); } #ifdef PDF_ENABLE_XFA CXFA_Object* CJS_V8::ToXFAObject(v8::Local<v8::Value> obj) { ASSERT(!obj.IsEmpty()); if (!obj->IsObject()) return nullptr; CFXJSE_HostObject* hostObj = FXJSE_RetrieveObjectBinding(obj.As<v8::Object>(), nullptr); if (!hostObj || hostObj->type() != CFXJSE_HostObject::kXFA) return nullptr; return static_cast<CXFA_Object*>(hostObj); } v8::Local<v8::Value> CJS_V8::NewXFAObject( CXFA_Object* obj, v8::Global<v8::FunctionTemplate>& tmpl) { v8::EscapableHandleScope scope(m_isolate); v8::Local<v8::FunctionTemplate> klass = v8::Local<v8::FunctionTemplate>::New(m_isolate, tmpl); v8::Local<v8::Object> object = klass->InstanceTemplate()->NewInstance(); FXJSE_UpdateObjectBinding(object, obj); return scope.Escape(object); } #endif // PDF_ENABLE_XFA