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