// 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_runtime.h" #include <algorithm> #include "fpdfsdk/include/fsdk_mgr.h" #include "fpdfsdk/javascript/Consts.h" #include "fpdfsdk/javascript/Document.h" #include "fpdfsdk/javascript/Field.h" #include "fpdfsdk/javascript/Icon.h" #include "fpdfsdk/javascript/JS_Define.h" #include "fpdfsdk/javascript/JS_EventHandler.h" #include "fpdfsdk/javascript/JS_GlobalData.h" #include "fpdfsdk/javascript/JS_Object.h" #include "fpdfsdk/javascript/JS_Value.h" #include "fpdfsdk/javascript/PublicMethods.h" #include "fpdfsdk/javascript/app.h" #include "fpdfsdk/javascript/cjs_context.h" #include "fpdfsdk/javascript/color.h" #include "fpdfsdk/javascript/console.h" #include "fpdfsdk/javascript/event.h" #include "fpdfsdk/javascript/global.h" #include "fpdfsdk/javascript/report.h" #include "fpdfsdk/javascript/util.h" #include "third_party/base/stl_util.h" #ifdef PDF_ENABLE_XFA #include "fpdfsdk/fpdfxfa/include/fpdfxfa_app.h" #include "fxjs/include/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(CPDFDoc_Environment* pEnv) { return new CJS_Runtime(pEnv); } // static CJS_Runtime* CJS_Runtime::FromContext(const IJS_Context* cc) { const CJS_Context* pContext = static_cast<const CJS_Context*>(cc); return pContext->GetJSRuntime(); } CJS_Runtime::CJS_Runtime(CPDFDoc_Environment* pApp) : m_pApp(pApp), m_pDocument(nullptr), m_bBlocking(FALSE), m_isolate(nullptr), m_isolateManaged(false) { #ifndef PDF_ENABLE_XFA IPDF_JSPLATFORM* pPlatform = m_pApp->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(&m_isolate); #else if (CPDFXFA_App::GetInstance()->GetJSERuntime()) { // TODO(tsepez): CPDFXFA_App should also use the embedder provided isolate. m_isolate = (v8::Isolate*)CPDFXFA_App::GetInstance()->GetJSERuntime(); } else { IPDF_JSPLATFORM* pPlatform = m_pApp->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(&m_isolate); } v8::Isolate* isolate = m_isolate; v8::Isolate::Scope isolate_scope(isolate); v8::HandleScope handle_scope(isolate); if (CPDFXFA_App::GetInstance()->IsJavaScriptInitialized()) { CJS_Context* pContext = (CJS_Context*)NewContext(); FXJS_InitializeRuntime(GetIsolate(), this, &m_context, &m_StaticObjects); ReleaseContext(pContext); return; } #endif if (m_isolateManaged || FXJS_GlobalIsolateRefCount() == 0) DefineJSObjects(); #ifdef PDF_ENABLE_XFA CPDFXFA_App::GetInstance()->SetJavaScriptInitialized(TRUE); #endif CJS_Context* pContext = (CJS_Context*)NewContext(); FXJS_InitializeRuntime(GetIsolate(), this, &m_context, &m_StaticObjects); ReleaseContext(pContext); } CJS_Runtime::~CJS_Runtime() { for (auto* obs : m_observers) obs->OnDestroyed(); m_ContextArray.clear(); m_ConstArrays.clear(); FXJS_ReleaseRuntime(GetIsolate(), &m_context, &m_StaticObjects); m_context.Reset(); if (m_isolateManaged) m_isolate->Dispose(); } 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(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_Display::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_Font::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); // ObjDefIDs 3 - 5 CJS_Highlight::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_Position::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_ScaleHow::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); // ObjDefIDs 6 - 8 CJS_ScaleWhen::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_Style::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_Zoomtype::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); // ObjDefIDs 9 - 11 CJS_App::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_Color::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_Console::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); // ObjDefIDs 12 - 14 CJS_Document::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_GLOBAL); CJS_Event::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_Field::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC); // ObjDefIDs 15 - 17 CJS_Global::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); CJS_Icon::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC); CJS_Util::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); // ObjDefIDs 18 - 20 (these can't fail, return void). CJS_PublicMethods::DefineJSObjects(GetIsolate()); CJS_GlobalConsts::DefineJSObjects(this); CJS_GlobalArrays::DefineJSObjects(this); // ObjDefIDs 21 - 22. CJS_TimerObj::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC); CJS_PrintParamsObj::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC); } IJS_Context* CJS_Runtime::NewContext() { m_ContextArray.push_back(std::unique_ptr<CJS_Context>(new CJS_Context(this))); return m_ContextArray.back().get(); } void CJS_Runtime::ReleaseContext(IJS_Context* pContext) { for (auto it = m_ContextArray.begin(); it != m_ContextArray.end(); ++it) { if (it->get() == static_cast<CJS_Context*>(pContext)) { m_ContextArray.erase(it); return; } } } IJS_Context* CJS_Runtime::GetCurrentContext() { return m_ContextArray.empty() ? nullptr : m_ContextArray.back().get(); } void CJS_Runtime::SetReaderDocument(CPDFSDK_Document* pReaderDoc) { if (m_pDocument != pReaderDoc) { v8::Isolate::Scope isolate_scope(m_isolate); v8::HandleScope handle_scope(m_isolate); v8::Local<v8::Context> context = v8::Local<v8::Context>::New(m_isolate, m_context); v8::Context::Scope context_scope(context); m_pDocument = pReaderDoc; if (pReaderDoc) { v8::Local<v8::Object> pThis = FXJS_GetThisObj(GetIsolate()); if (!pThis.IsEmpty()) { if (FXJS_GetObjDefnID(pThis) == CJS_Document::g_nObjDefnID) { if (CJS_Document* pJSDocument = (CJS_Document*)FXJS_GetPrivate(GetIsolate(), pThis)) { if (Document* pDocument = (Document*)pJSDocument->GetEmbedObject()) pDocument->AttachDoc(pReaderDoc); } } } } } } CPDFSDK_Document* CJS_Runtime::GetReaderDocument() { return m_pDocument; } int CJS_Runtime::Execute(const CFX_WideString& script, CFX_WideString* info) { FXJSErr error = {}; int nRet = FXJS_Execute(m_isolate, script, &error); if (nRet < 0) { info->Format(L"[ Line: %05d { %s } ] : %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); } v8::Local<v8::Context> CJS_Runtime::NewJSContext() { return v8::Local<v8::Context>::New(m_isolate, m_context); } void CJS_Runtime::SetConstArray(const CFX_WideString& name, v8::Local<v8::Array> array) { m_ConstArrays[name] = v8::Global<v8::Array>(m_isolate, array); } v8::Local<v8::Array> CJS_Runtime::GetConstArray(const CFX_WideString& name) { return v8::Local<v8::Array>::New(m_isolate, m_ConstArrays[name]); } void CJS_Runtime::AddObserver(Observer* observer) { ASSERT(!pdfium::ContainsKey(m_observers, observer)); m_observers.insert(observer); } void CJS_Runtime::RemoveObserver(Observer* observer) { ASSERT(pdfium::ContainsKey(m_observers, observer)); m_observers.erase(observer); } #ifdef PDF_ENABLE_XFA CFX_WideString ChangeObjName(const CFX_WideString& str) { CFX_WideString sRet = str; sRet.Replace(L"_", L"."); return sRet; } FX_BOOL CJS_Runtime::GetValueByName(const CFX_ByteStringC& utf8Name, CFXJSE_Value* pValue) { const FX_CHAR* name = utf8Name.c_str(); v8::Isolate::Scope isolate_scope(GetIsolate()); v8::HandleScope handle_scope(GetIsolate()); v8::Local<v8::Context> old_context = GetIsolate()->GetCurrentContext(); v8::Local<v8::Context> context = v8::Local<v8::Context>::New(GetIsolate(), m_context); v8::Context::Scope context_scope(context); // Caution: We're about to hand to XFA an object that in order to invoke // methods will require that the current v8::Context always has a pointer // to a CJS_Runtime in its embedder data slot. Unfortunately, XFA creates // its own v8::Context which has not initialized the embedder data slot. // Do so now. // TODO(tsepez): redesign PDF-side objects to not rely on v8::Context's // embedder data slots, and/or to always use the right context. FXJS_SetRuntimeForV8Context(old_context, this); v8::Local<v8::Value> propvalue = context->Global()->Get(v8::String::NewFromUtf8( GetIsolate(), name, v8::String::kNormalString, utf8Name.GetLength())); if (propvalue.IsEmpty()) { pValue->SetUndefined(); return FALSE; } pValue->ForceSetValue(propvalue); return TRUE; } FX_BOOL CJS_Runtime::SetValueByName(const CFX_ByteStringC& utf8Name, CFXJSE_Value* pValue) { if (utf8Name.IsEmpty() || !pValue) return FALSE; const FX_CHAR* name = utf8Name.c_str(); v8::Isolate* pIsolate = GetIsolate(); v8::Isolate::Scope isolate_scope(pIsolate); v8::HandleScope handle_scope(pIsolate); v8::Local<v8::Context> context = v8::Local<v8::Context>::New(pIsolate, m_context); v8::Context::Scope context_scope(context); // v8::Local<v8::Context> tmpCotext = // v8::Local<v8::Context>::New(GetIsolate(), m_context); v8::Local<v8::Value> propvalue = v8::Local<v8::Value>::New(GetIsolate(), pValue->DirectGetValue()); context->Global()->Set( v8::String::NewFromUtf8(pIsolate, name, v8::String::kNormalString, utf8Name.GetLength()), propvalue); return TRUE; } #endif