// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "fpdfsdk/javascript/cjs_runtime.h"
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#include <algorithm>
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#include "fpdfsdk/include/fsdk_mgr.h"
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#include "fpdfsdk/javascript/Consts.h"
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#include "fpdfsdk/javascript/Document.h"
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#include "fpdfsdk/javascript/Field.h"
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#include "fpdfsdk/javascript/Icon.h"
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#include "fpdfsdk/javascript/JS_Define.h"
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#include "fpdfsdk/javascript/JS_EventHandler.h"
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#include "fpdfsdk/javascript/JS_GlobalData.h"
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#include "fpdfsdk/javascript/JS_Object.h"
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#include "fpdfsdk/javascript/JS_Value.h"
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#include "fpdfsdk/javascript/PublicMethods.h"
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#include "fpdfsdk/javascript/app.h"
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#include "fpdfsdk/javascript/cjs_context.h"
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#include "fpdfsdk/javascript/color.h"
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#include "fpdfsdk/javascript/console.h"
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#include "fpdfsdk/javascript/event.h"
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#include "fpdfsdk/javascript/global.h"
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#include "fpdfsdk/javascript/report.h"
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#include "fpdfsdk/javascript/util.h"
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#include "third_party/base/stl_util.h"
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#ifdef PDF_ENABLE_XFA
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#include "fpdfsdk/fpdfxfa/include/fpdfxfa_app.h"
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#include "fxjs/include/cfxjse_value.h"
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#endif // PDF_ENABLE_XFA
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// static
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void IJS_Runtime::Initialize(unsigned int slot, void* isolate) {
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FXJS_Initialize(slot, reinterpret_cast<v8::Isolate*>(isolate));
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}
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// static
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void IJS_Runtime::Destroy() {
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FXJS_Release();
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}
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// static
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IJS_Runtime* IJS_Runtime::Create(CPDFDoc_Environment* pEnv) {
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return new CJS_Runtime(pEnv);
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}
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// static
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CJS_Runtime* CJS_Runtime::FromContext(const IJS_Context* cc) {
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const CJS_Context* pContext = static_cast<const CJS_Context*>(cc);
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return pContext->GetJSRuntime();
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}
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CJS_Runtime::CJS_Runtime(CPDFDoc_Environment* pApp)
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: m_pApp(pApp),
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m_pDocument(nullptr),
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m_bBlocking(FALSE),
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m_isolate(nullptr),
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m_isolateManaged(false) {
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#ifndef PDF_ENABLE_XFA
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IPDF_JSPLATFORM* pPlatform = m_pApp->GetFormFillInfo()->m_pJsPlatform;
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if (pPlatform->version <= 2) {
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unsigned int embedderDataSlot = 0;
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v8::Isolate* pExternalIsolate = nullptr;
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if (pPlatform->version == 2) {
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pExternalIsolate = reinterpret_cast<v8::Isolate*>(pPlatform->m_isolate);
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embedderDataSlot = pPlatform->m_v8EmbedderSlot;
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}
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FXJS_Initialize(embedderDataSlot, pExternalIsolate);
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}
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m_isolateManaged = FXJS_GetIsolate(&m_isolate);
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#else
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if (CPDFXFA_App::GetInstance()->GetJSERuntime()) {
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// TODO(tsepez): CPDFXFA_App should also use the embedder provided isolate.
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m_isolate = (v8::Isolate*)CPDFXFA_App::GetInstance()->GetJSERuntime();
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} else {
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IPDF_JSPLATFORM* pPlatform = m_pApp->GetFormFillInfo()->m_pJsPlatform;
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if (pPlatform->version <= 2) {
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unsigned int embedderDataSlot = 0;
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v8::Isolate* pExternalIsolate = nullptr;
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if (pPlatform->version == 2) {
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pExternalIsolate = reinterpret_cast<v8::Isolate*>(pPlatform->m_isolate);
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embedderDataSlot = pPlatform->m_v8EmbedderSlot;
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}
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FXJS_Initialize(embedderDataSlot, pExternalIsolate);
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}
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m_isolateManaged = FXJS_GetIsolate(&m_isolate);
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}
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v8::Isolate* isolate = m_isolate;
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v8::Isolate::Scope isolate_scope(isolate);
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v8::HandleScope handle_scope(isolate);
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if (CPDFXFA_App::GetInstance()->IsJavaScriptInitialized()) {
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CJS_Context* pContext = (CJS_Context*)NewContext();
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FXJS_InitializeRuntime(GetIsolate(), this, &m_context, &m_StaticObjects);
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ReleaseContext(pContext);
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return;
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}
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#endif
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if (m_isolateManaged || FXJS_GlobalIsolateRefCount() == 0)
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DefineJSObjects();
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#ifdef PDF_ENABLE_XFA
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CPDFXFA_App::GetInstance()->SetJavaScriptInitialized(TRUE);
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#endif
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CJS_Context* pContext = (CJS_Context*)NewContext();
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FXJS_InitializeRuntime(GetIsolate(), this, &m_context, &m_StaticObjects);
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ReleaseContext(pContext);
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}
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CJS_Runtime::~CJS_Runtime() {
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for (auto* obs : m_observers)
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obs->OnDestroyed();
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m_ContextArray.clear();
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m_ConstArrays.clear();
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FXJS_ReleaseRuntime(GetIsolate(), &m_context, &m_StaticObjects);
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m_context.Reset();
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if (m_isolateManaged)
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m_isolate->Dispose();
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}
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void CJS_Runtime::DefineJSObjects() {
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v8::Isolate::Scope isolate_scope(GetIsolate());
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v8::HandleScope handle_scope(GetIsolate());
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v8::Local<v8::Context> context = v8::Context::New(GetIsolate());
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v8::Context::Scope context_scope(context);
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// The call order determines the "ObjDefID" assigned to each class.
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// ObjDefIDs 0 - 2
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CJS_Border::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_Display::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_Font::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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// ObjDefIDs 3 - 5
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CJS_Highlight::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_Position::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_ScaleHow::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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// ObjDefIDs 6 - 8
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CJS_ScaleWhen::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_Style::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_Zoomtype::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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// ObjDefIDs 9 - 11
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CJS_App::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_Color::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_Console::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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// ObjDefIDs 12 - 14
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CJS_Document::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_GLOBAL);
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CJS_Event::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_Field::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC);
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// ObjDefIDs 15 - 17
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CJS_Global::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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CJS_Icon::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC);
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CJS_Util::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC);
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// ObjDefIDs 18 - 20 (these can't fail, return void).
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CJS_PublicMethods::DefineJSObjects(GetIsolate());
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CJS_GlobalConsts::DefineJSObjects(this);
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CJS_GlobalArrays::DefineJSObjects(this);
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// ObjDefIDs 21 - 22.
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CJS_TimerObj::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC);
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CJS_PrintParamsObj::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC);
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}
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IJS_Context* CJS_Runtime::NewContext() {
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m_ContextArray.push_back(std::unique_ptr<CJS_Context>(new CJS_Context(this)));
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return m_ContextArray.back().get();
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}
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void CJS_Runtime::ReleaseContext(IJS_Context* pContext) {
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for (auto it = m_ContextArray.begin(); it != m_ContextArray.end(); ++it) {
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if (it->get() == static_cast<CJS_Context*>(pContext)) {
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m_ContextArray.erase(it);
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return;
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}
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}
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}
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IJS_Context* CJS_Runtime::GetCurrentContext() {
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return m_ContextArray.empty() ? nullptr : m_ContextArray.back().get();
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}
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void CJS_Runtime::SetReaderDocument(CPDFSDK_Document* pReaderDoc) {
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if (m_pDocument != pReaderDoc) {
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v8::Isolate::Scope isolate_scope(m_isolate);
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v8::HandleScope handle_scope(m_isolate);
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v8::Local<v8::Context> context =
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v8::Local<v8::Context>::New(m_isolate, m_context);
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v8::Context::Scope context_scope(context);
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m_pDocument = pReaderDoc;
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if (pReaderDoc) {
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v8::Local<v8::Object> pThis = FXJS_GetThisObj(GetIsolate());
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if (!pThis.IsEmpty()) {
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if (FXJS_GetObjDefnID(pThis) == CJS_Document::g_nObjDefnID) {
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if (CJS_Document* pJSDocument =
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(CJS_Document*)FXJS_GetPrivate(GetIsolate(), pThis)) {
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if (Document* pDocument = (Document*)pJSDocument->GetEmbedObject())
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pDocument->AttachDoc(pReaderDoc);
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}
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}
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}
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}
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}
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}
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CPDFSDK_Document* CJS_Runtime::GetReaderDocument() {
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return m_pDocument;
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}
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int CJS_Runtime::Execute(const CFX_WideString& script, CFX_WideString* info) {
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FXJSErr error = {};
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int nRet = FXJS_Execute(m_isolate, script, &error);
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if (nRet < 0) {
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info->Format(L"[ Line: %05d { %s } ] : %s", error.linnum - 1, error.srcline,
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error.message);
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}
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return nRet;
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}
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bool CJS_Runtime::AddEventToSet(const FieldEvent& event) {
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return m_FieldEventSet.insert(event).second;
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}
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void CJS_Runtime::RemoveEventFromSet(const FieldEvent& event) {
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m_FieldEventSet.erase(event);
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}
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v8::Local<v8::Context> CJS_Runtime::NewJSContext() {
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return v8::Local<v8::Context>::New(m_isolate, m_context);
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}
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void CJS_Runtime::SetConstArray(const CFX_WideString& name,
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v8::Local<v8::Array> array) {
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m_ConstArrays[name] = v8::Global<v8::Array>(m_isolate, array);
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}
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v8::Local<v8::Array> CJS_Runtime::GetConstArray(const CFX_WideString& name) {
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return v8::Local<v8::Array>::New(m_isolate, m_ConstArrays[name]);
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}
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void CJS_Runtime::AddObserver(Observer* observer) {
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ASSERT(!pdfium::ContainsKey(m_observers, observer));
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m_observers.insert(observer);
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}
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void CJS_Runtime::RemoveObserver(Observer* observer) {
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ASSERT(pdfium::ContainsKey(m_observers, observer));
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m_observers.erase(observer);
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}
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#ifdef PDF_ENABLE_XFA
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CFX_WideString ChangeObjName(const CFX_WideString& str) {
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CFX_WideString sRet = str;
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sRet.Replace(L"_", L".");
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return sRet;
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}
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FX_BOOL CJS_Runtime::GetValueByName(const CFX_ByteStringC& utf8Name,
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CFXJSE_Value* pValue) {
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const FX_CHAR* name = utf8Name.c_str();
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v8::Isolate::Scope isolate_scope(GetIsolate());
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v8::HandleScope handle_scope(GetIsolate());
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v8::Local<v8::Context> old_context = GetIsolate()->GetCurrentContext();
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v8::Local<v8::Context> context =
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v8::Local<v8::Context>::New(GetIsolate(), m_context);
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v8::Context::Scope context_scope(context);
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// Caution: We're about to hand to XFA an object that in order to invoke
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// methods will require that the current v8::Context always has a pointer
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// to a CJS_Runtime in its embedder data slot. Unfortunately, XFA creates
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// its own v8::Context which has not initialized the embedder data slot.
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// Do so now.
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// TODO(tsepez): redesign PDF-side objects to not rely on v8::Context's
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// embedder data slots, and/or to always use the right context.
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FXJS_SetRuntimeForV8Context(old_context, this);
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v8::Local<v8::Value> propvalue =
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context->Global()->Get(v8::String::NewFromUtf8(
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GetIsolate(), name, v8::String::kNormalString, utf8Name.GetLength()));
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if (propvalue.IsEmpty()) {
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pValue->SetUndefined();
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return FALSE;
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}
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pValue->ForceSetValue(propvalue);
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return TRUE;
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}
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FX_BOOL CJS_Runtime::SetValueByName(const CFX_ByteStringC& utf8Name,
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CFXJSE_Value* pValue) {
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if (utf8Name.IsEmpty() || !pValue)
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return FALSE;
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const FX_CHAR* name = utf8Name.c_str();
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v8::Isolate* pIsolate = GetIsolate();
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v8::Isolate::Scope isolate_scope(pIsolate);
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v8::HandleScope handle_scope(pIsolate);
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v8::Local<v8::Context> context =
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v8::Local<v8::Context>::New(pIsolate, m_context);
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v8::Context::Scope context_scope(context);
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// v8::Local<v8::Context> tmpCotext =
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// v8::Local<v8::Context>::New(GetIsolate(), m_context);
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v8::Local<v8::Value> propvalue =
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v8::Local<v8::Value>::New(GetIsolate(), pValue->DirectGetValue());
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context->Global()->Set(
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v8::String::NewFromUtf8(pIsolate, name, v8::String::kNormalString,
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utf8Name.GetLength()),
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propvalue);
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return TRUE;
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}
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#endif
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