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// 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/Annot.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();
}
// static
CJS_Runtime* CJS_Runtime::CurrentRuntimeFromIsolate(v8::Isolate* pIsolate) {
return static_cast<CJS_Runtime*>(
CFXJS_Engine::CurrentEngineFromIsolate(pIsolate));
}
CJS_Runtime::CJS_Runtime(CPDFDoc_Environment* pApp)
: m_pApp(pApp),
m_pDocument(nullptr),
m_bBlocking(false),
m_isolateManaged(false) {
v8::Isolate* pIsolate = nullptr;
#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(&pIsolate);
SetIsolate(pIsolate);
#else
if (CPDFXFA_App::GetInstance()->GetJSERuntime()) {
// TODO(tsepez): CPDFXFA_App should also use the embedder provided isolate.
pIsolate = CPDFXFA_App::GetInstance()->GetJSERuntime();
SetIsolate(pIsolate);
} 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(&pIsolate);
SetIsolate(pIsolate);
}
v8::Isolate::Scope isolate_scope(pIsolate);
v8::HandleScope handle_scope(pIsolate);
if (CPDFXFA_App::GetInstance()->IsJavaScriptInitialized()) {
CJS_Context* pContext = (CJS_Context*)NewContext();
InitializeEngine();
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();
InitializeEngine();
ReleaseContext(pContext);
}
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, FXJSOBJTYPE_STATIC);
CJS_Display::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
CJS_Font::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
// ObjDefIDs 3 - 5
CJS_Highlight::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
CJS_Position::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
CJS_ScaleHow::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
// ObjDefIDs 6 - 8
CJS_ScaleWhen::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
CJS_Style::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
CJS_Zoomtype::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
// ObjDefIDs 9 - 11
CJS_App::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
CJS_Color::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
CJS_Console::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
// ObjDefIDs 12 - 14
CJS_Document::DefineJSObjects(this, FXJSOBJTYPE_GLOBAL);
CJS_Event::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
CJS_Field::DefineJSObjects(this, FXJSOBJTYPE_DYNAMIC);
// ObjDefIDs 15 - 17
CJS_Global::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
CJS_Icon::DefineJSObjects(this, FXJSOBJTYPE_DYNAMIC);
CJS_Util::DefineJSObjects(this, FXJSOBJTYPE_STATIC);
// 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, FXJSOBJTYPE_DYNAMIC);
CJS_PrintParamsObj::DefineJSObjects(this, FXJSOBJTYPE_DYNAMIC);
CJS_Annot::DefineJSObjects(this, 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)
return;
v8::Isolate::Scope isolate_scope(GetIsolate());
v8::HandleScope handle_scope(GetIsolate());
v8::Local<v8::Context> context = NewLocalContext();
v8::Context::Scope context_scope(context);
m_pDocument = pReaderDoc;
if (!pReaderDoc)
return;
v8::Local<v8::Object> pThis = GetThisObj();
if (pThis.IsEmpty())
return;
if (CFXJS_Engine::GetObjDefnID(pThis) != CJS_Document::g_nObjDefnID)
return;
CJS_Document* pJSDocument =
static_cast<CJS_Document*>(GetObjectPrivate(pThis));
if (!pJSDocument)
return;
Document* pDocument = static_cast<Document*>(pJSDocument->GetEmbedObject());
if (!pDocument)
return;
pDocument->AttachDoc(pReaderDoc);
}
CPDFSDK_Document* CJS_Runtime::GetReaderDocument() {
return m_pDocument;
}
int CJS_Runtime::ExecuteScript(const CFX_WideString& script,
CFX_WideString* info) {
FXJSErr error = {};
int nRet = Execute(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);
}
#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 = NewLocalContext();
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.
CFXJS_Engine::SetForV8Context(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 = NewLocalContext();
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