// 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 "fxjs/cjs_runtime.h" #include <algorithm> #include "fpdfsdk/cpdfsdk_formfillenvironment.h" #include "fxjs/JS_Define.h" #include "fxjs/cjs_annot.h" #include "fxjs/cjs_app.h" #include "fxjs/cjs_border.h" #include "fxjs/cjs_color.h" #include "fxjs/cjs_console.h" #include "fxjs/cjs_display.h" #include "fxjs/cjs_document.h" #include "fxjs/cjs_event.h" #include "fxjs/cjs_event_context.h" #include "fxjs/cjs_eventhandler.h" #include "fxjs/cjs_field.h" #include "fxjs/cjs_font.h" #include "fxjs/cjs_global.h" #include "fxjs/cjs_globalarrays.h" #include "fxjs/cjs_globalconsts.h" #include "fxjs/cjs_globaldata.h" #include "fxjs/cjs_highlight.h" #include "fxjs/cjs_icon.h" #include "fxjs/cjs_object.h" #include "fxjs/cjs_position.h" #include "fxjs/cjs_printparamsobj.h" #include "fxjs/cjs_publicmethods.h" #include "fxjs/cjs_report.h" #include "fxjs/cjs_scalehow.h" #include "fxjs/cjs_scalewhen.h" #include "fxjs/cjs_style.h" #include "fxjs/cjs_timerobj.h" #include "fxjs/cjs_util.h" #include "fxjs/cjs_zoomtype.h" #include "public/fpdf_formfill.h" #include "third_party/base/stl_util.h" #ifdef PDF_ENABLE_XFA #include "fxjs/cfxjse_value.h" #endif // PDF_ENABLE_XFA // static void IJS_Runtime::Initialize(unsigned int slot, void* isolate) { FXJS_Initialize(slot, reinterpret_cast<v8::Isolate*>(isolate)); } // static void IJS_Runtime::Destroy() { FXJS_Release(); } // static IJS_Runtime* IJS_Runtime::Create(CPDFSDK_FormFillEnvironment* pFormFillEnv) { return new CJS_Runtime(pFormFillEnv); } // static CJS_Runtime* CJS_Runtime::CurrentRuntimeFromIsolate(v8::Isolate* pIsolate) { return static_cast<CJS_Runtime*>( CFXJS_Engine::CurrentEngineFromIsolate(pIsolate)); } CJS_Runtime::CJS_Runtime(CPDFSDK_FormFillEnvironment* pFormFillEnv) : m_pFormFillEnv(pFormFillEnv), m_bBlocking(false), m_isolateManaged(false) { v8::Isolate* pIsolate = nullptr; IPDF_JSPLATFORM* pPlatform = m_pFormFillEnv->GetFormFillInfo()->m_pJsPlatform; if (pPlatform->version <= 2) { unsigned int embedderDataSlot = 0; v8::Isolate* pExternalIsolate = nullptr; if (pPlatform->version == 2) { pExternalIsolate = reinterpret_cast<v8::Isolate*>(pPlatform->m_isolate); embedderDataSlot = pPlatform->m_v8EmbedderSlot; } FXJS_Initialize(embedderDataSlot, pExternalIsolate); } m_isolateManaged = FXJS_GetIsolate(&pIsolate); SetIsolate(pIsolate); #ifdef PDF_ENABLE_XFA v8::Isolate::Scope isolate_scope(pIsolate); v8::HandleScope handle_scope(pIsolate); #endif if (m_isolateManaged || FXJS_GlobalIsolateRefCount() == 0) DefineJSObjects(); IJS_EventContext* pContext = NewEventContext(); InitializeEngine(); ReleaseEventContext(pContext); SetFormFillEnvToDocument(); } CJS_Runtime::~CJS_Runtime() { NotifyObservedPtrs(); ReleaseEngine(); if (m_isolateManaged) { GetIsolate()->Dispose(); SetIsolate(nullptr); } } void CJS_Runtime::DefineJSObjects() { v8::Isolate::Scope isolate_scope(GetIsolate()); v8::HandleScope handle_scope(GetIsolate()); v8::Local<v8::Context> context = v8::Context::New(GetIsolate()); v8::Context::Scope context_scope(context); // The call order determines the "ObjDefID" assigned to each class. // ObjDefIDs 0 - 2 CJS_Border::DefineJSObjects(this); CJS_Display::DefineJSObjects(this); CJS_Font::DefineJSObjects(this); // ObjDefIDs 3 - 5 CJS_Highlight::DefineJSObjects(this); CJS_Position::DefineJSObjects(this); CJS_ScaleHow::DefineJSObjects(this); // ObjDefIDs 6 - 8 CJS_ScaleWhen::DefineJSObjects(this); CJS_Style::DefineJSObjects(this); CJS_Zoomtype::DefineJSObjects(this); // ObjDefIDs 9 - 11 CJS_App::DefineJSObjects(this); CJS_Color::DefineJSObjects(this); CJS_Console::DefineJSObjects(this); // ObjDefIDs 12 - 14 CJS_Document::DefineJSObjects(this); CJS_Event::DefineJSObjects(this); CJS_Field::DefineJSObjects(this); // ObjDefIDs 15 - 17 CJS_Global::DefineJSObjects(this); CJS_Icon::DefineJSObjects(this); CJS_Util::DefineJSObjects(this); // ObjDefIDs 18 - 20 (these can't fail, return void). CJS_PublicMethods::DefineJSObjects(this); CJS_GlobalConsts::DefineJSObjects(this); CJS_GlobalArrays::DefineJSObjects(this); // ObjDefIDs 21 - 23. CJS_TimerObj::DefineJSObjects(this); CJS_PrintParamsObj::DefineJSObjects(this); CJS_Annot::DefineJSObjects(this); } IJS_EventContext* CJS_Runtime::NewEventContext() { m_EventContextArray.push_back(pdfium::MakeUnique<CJS_EventContext>(this)); return m_EventContextArray.back().get(); } void CJS_Runtime::ReleaseEventContext(IJS_EventContext* pContext) { auto it = std::find(m_EventContextArray.begin(), m_EventContextArray.end(), pdfium::FakeUniquePtr<CJS_EventContext>( static_cast<CJS_EventContext*>(pContext))); if (it != m_EventContextArray.end()) m_EventContextArray.erase(it); } CJS_EventContext* CJS_Runtime::GetCurrentEventContext() const { return m_EventContextArray.empty() ? nullptr : m_EventContextArray.back().get(); } void CJS_Runtime::SetFormFillEnvToDocument() { v8::Isolate::Scope isolate_scope(GetIsolate()); v8::HandleScope handle_scope(GetIsolate()); v8::Local<v8::Context> context = NewLocalContext(); v8::Context::Scope context_scope(context); v8::Local<v8::Object> pThis = GetThisObj(); if (pThis.IsEmpty()) return; if (CFXJS_Engine::GetObjDefnID(pThis) != CJS_Document::GetObjDefnID()) return; CJS_Document* pJSDocument = static_cast<CJS_Document*>(GetObjectPrivate(pThis)); if (!pJSDocument) return; Document* pDocument = static_cast<Document*>(pJSDocument->GetEmbedObject()); if (!pDocument) return; pDocument->SetFormFillEnv(m_pFormFillEnv.Get()); } CPDFSDK_FormFillEnvironment* CJS_Runtime::GetFormFillEnv() const { return m_pFormFillEnv.Get(); } int CJS_Runtime::ExecuteScript(const WideString& script, WideString* info) { FXJSErr error = {}; int nRet = Execute(script, &error); if (nRet < 0) { *info = WideString::Format(L"[ Line: %05d { %ls } ] : %s", error.linnum - 1, error.srcline, error.message); } return nRet; } bool CJS_Runtime::AddEventToSet(const FieldEvent& event) { return m_FieldEventSet.insert(event).second; } void CJS_Runtime::RemoveEventFromSet(const FieldEvent& event) { m_FieldEventSet.erase(event); } #ifdef PDF_ENABLE_XFA WideString ChangeObjName(const WideString& str) { WideString sRet = str; sRet.Replace(L"_", L"."); return sRet; } bool CJS_Runtime::GetValueByName(const ByteStringView& utf8Name, CFXJSE_Value* pValue) { v8::Isolate::Scope isolate_scope(GetIsolate()); v8::HandleScope handle_scope(GetIsolate()); v8::Local<v8::Context> context = NewLocalContext(); v8::Context::Scope context_scope(context); v8::Local<v8::Value> propvalue = context->Global()->Get( v8::String::NewFromUtf8(GetIsolate(), utf8Name.unterminated_c_str(), v8::String::kNormalString, utf8Name.GetLength())); if (propvalue.IsEmpty()) { pValue->SetUndefined(); return false; } pValue->ForceSetValue(propvalue); return true; } bool CJS_Runtime::SetValueByName(const ByteStringView& utf8Name, CFXJSE_Value* pValue) { if (utf8Name.IsEmpty() || !pValue) return false; v8::Isolate* pIsolate = GetIsolate(); v8::Isolate::Scope isolate_scope(pIsolate); v8::HandleScope handle_scope(pIsolate); v8::Local<v8::Context> context = NewLocalContext(); v8::Context::Scope context_scope(context); v8::Local<v8::Value> propvalue = v8::Local<v8::Value>::New(GetIsolate(), pValue->DirectGetValue()); context->Global()->Set( v8::String::NewFromUtf8(pIsolate, utf8Name.unterminated_c_str(), v8::String::kNormalString, utf8Name.GetLength()), propvalue); return true; } #endif v8::Local<v8::Value> CJS_Runtime::MaybeCoerceToNumber( v8::Local<v8::Value> value) { bool bAllowNaN = false; if (value->IsString()) { ByteString bstr = ByteString::FromUnicode(ToWideString(value)); if (bstr.GetLength() == 0) return value; if (bstr == "NaN") bAllowNaN = true; } v8::Isolate* pIsolate = GetIsolate(); v8::TryCatch try_catch(pIsolate); v8::MaybeLocal<v8::Number> maybeNum = value->ToNumber(pIsolate->GetCurrentContext()); if (maybeNum.IsEmpty()) return value; v8::Local<v8::Number> num = maybeNum.ToLocalChecked(); if (std::isnan(num->Value()) && !bAllowNaN) return value; return num; }