| // 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 "xfa/fxjse/context.h" |
| |
| #include "xfa/fxjse/class.h" |
| #include "xfa/fxjse/scope_inline.h" |
| #include "xfa/fxjse/util_inline.h" |
| #include "xfa/fxjse/value.h" |
| |
| namespace { |
| |
| CFXJSE_Context* CFXContextFromHContext(FXJSE_HCONTEXT hContext) { |
| return reinterpret_cast<CFXJSE_Context*>(hContext); |
| } |
| |
| } // namespace |
| |
| FXJSE_HCONTEXT FXJSE_Context_Create(FXJSE_HRUNTIME hRuntime, |
| const FXJSE_CLASS* lpGlobalClass, |
| void* lpGlobalObject) { |
| CFXJSE_Context* pContext = CFXJSE_Context::Create( |
| reinterpret_cast<v8::Isolate*>(hRuntime), lpGlobalClass, lpGlobalObject); |
| return reinterpret_cast<FXJSE_HCONTEXT>(pContext); |
| } |
| |
| void FXJSE_Context_Release(FXJSE_HCONTEXT hContext) { |
| delete CFXContextFromHContext(hContext); |
| } |
| |
| FXJSE_HVALUE FXJSE_Context_GetGlobalObject(FXJSE_HCONTEXT hContext) { |
| CFXJSE_Context* pContext = CFXContextFromHContext(hContext); |
| if (!pContext) |
| return nullptr; |
| |
| CFXJSE_Value* lpValue = CFXJSE_Value::Create(pContext->GetRuntime()); |
| ASSERT(lpValue); |
| pContext->GetGlobalObject(lpValue); |
| return reinterpret_cast<FXJSE_HVALUE>(lpValue); |
| } |
| |
| static const FX_CHAR* szCompatibleModeScripts[] = { |
| "(function(global, list) {\n" |
| " 'use strict';\n" |
| " var objname;\n" |
| " for (objname in list) {\n" |
| " var globalobj = global[objname];\n" |
| " if (globalobj) {\n" |
| " list[objname].forEach(function(name) {\n" |
| " if (!globalobj[name]) {\n" |
| " Object.defineProperty(globalobj, name, {\n" |
| " writable: true,\n" |
| " enumerable: false,\n" |
| " value: (function(obj) {\n" |
| " if (arguments.length === 0) {\n" |
| " throw new TypeError('missing argument 0 when calling " |
| " function ' + objname + '.' + name);\n" |
| " }\n" |
| " return globalobj.prototype[name].apply(obj, " |
| " Array.prototype.slice.call(arguments, 1));\n" |
| " })\n" |
| " });\n" |
| " }\n" |
| " });\n" |
| " }\n" |
| " }\n" |
| "}(this, {String: ['substr', 'toUpperCase']}));"}; |
| void FXJSE_Context_EnableCompatibleMode(FXJSE_HCONTEXT hContext, |
| uint32_t dwCompatibleFlags) { |
| for (uint32_t i = 0; i < (uint32_t)FXJSE_COMPATIBLEMODEFLAGCOUNT; i++) { |
| if (dwCompatibleFlags & (1 << i)) { |
| FXJSE_ExecuteScript(hContext, szCompatibleModeScripts[i], NULL, NULL); |
| } |
| } |
| } |
| |
| FX_BOOL FXJSE_ExecuteScript(FXJSE_HCONTEXT hContext, |
| const FX_CHAR* szScript, |
| FXJSE_HVALUE hRetValue, |
| FXJSE_HVALUE hNewThisObject) { |
| CFXJSE_Context* pContext = CFXContextFromHContext(hContext); |
| return pContext->ExecuteScript( |
| szScript, reinterpret_cast<CFXJSE_Value*>(hRetValue), |
| reinterpret_cast<CFXJSE_Value*>(hNewThisObject)); |
| } |
| |
| v8::Local<v8::Object> FXJSE_CreateReturnValue(v8::Isolate* pIsolate, |
| v8::TryCatch& trycatch) { |
| v8::Local<v8::Object> hReturnValue = v8::Object::New(pIsolate); |
| if (trycatch.HasCaught()) { |
| v8::Local<v8::Value> hException = trycatch.Exception(); |
| v8::Local<v8::Message> hMessage = trycatch.Message(); |
| if (hException->IsObject()) { |
| v8::Local<v8::Value> hValue; |
| hValue = hException.As<v8::Object>()->Get( |
| v8::String::NewFromUtf8(pIsolate, "name")); |
| if (hValue->IsString() || hValue->IsStringObject()) { |
| hReturnValue->Set(0, hValue); |
| } else { |
| hReturnValue->Set(0, v8::String::NewFromUtf8(pIsolate, "Error")); |
| } |
| hValue = hException.As<v8::Object>()->Get( |
| v8::String::NewFromUtf8(pIsolate, "message")); |
| if (hValue->IsString() || hValue->IsStringObject()) { |
| hReturnValue->Set(1, hValue); |
| } else { |
| hReturnValue->Set(1, hMessage->Get()); |
| } |
| } else { |
| hReturnValue->Set(0, v8::String::NewFromUtf8(pIsolate, "Error")); |
| hReturnValue->Set(1, hMessage->Get()); |
| } |
| hReturnValue->Set(2, hException); |
| hReturnValue->Set(3, v8::Integer::New(pIsolate, hMessage->GetLineNumber())); |
| hReturnValue->Set(4, hMessage->GetSourceLine()); |
| v8::Maybe<int32_t> maybe_int = |
| hMessage->GetStartColumn(pIsolate->GetCurrentContext()); |
| hReturnValue->Set(5, v8::Integer::New(pIsolate, maybe_int.FromMaybe(0))); |
| maybe_int = hMessage->GetEndColumn(pIsolate->GetCurrentContext()); |
| hReturnValue->Set(6, v8::Integer::New(pIsolate, maybe_int.FromMaybe(0))); |
| } |
| return hReturnValue; |
| } |
| |
| CFXJSE_Context* CFXJSE_Context::Create(v8::Isolate* pIsolate, |
| const FXJSE_CLASS* lpGlobalClass, |
| void* lpGlobalObject) { |
| CFXJSE_ScopeUtil_IsolateHandle scope(pIsolate); |
| CFXJSE_Context* pContext = new CFXJSE_Context(pIsolate); |
| CFXJSE_Class* lpGlobalClassObj = NULL; |
| v8::Local<v8::ObjectTemplate> hObjectTemplate; |
| if (lpGlobalClass) { |
| lpGlobalClassObj = CFXJSE_Class::Create(pContext, lpGlobalClass, TRUE); |
| ASSERT(lpGlobalClassObj); |
| v8::Local<v8::FunctionTemplate> hFunctionTemplate = |
| v8::Local<v8::FunctionTemplate>::New(pIsolate, |
| lpGlobalClassObj->m_hTemplate); |
| hObjectTemplate = hFunctionTemplate->InstanceTemplate(); |
| } else { |
| hObjectTemplate = v8::ObjectTemplate::New(pIsolate); |
| hObjectTemplate->SetInternalFieldCount(1); |
| } |
| v8::Local<v8::Context> hNewContext = |
| v8::Context::New(pIsolate, NULL, hObjectTemplate); |
| v8::Local<v8::Context> hRootContext = v8::Local<v8::Context>::New( |
| pIsolate, CFXJSE_RuntimeData::Get(pIsolate)->m_hRootContext); |
| hNewContext->SetSecurityToken(hRootContext->GetSecurityToken()); |
| v8::Local<v8::Object> hGlobalObject = |
| FXJSE_GetGlobalObjectFromContext(hNewContext); |
| FXJSE_UpdateObjectBinding(hGlobalObject, lpGlobalObject); |
| pContext->m_hContext.Reset(pIsolate, hNewContext); |
| return pContext; |
| } |
| |
| CFXJSE_Context::~CFXJSE_Context() { |
| for (int32_t i = 0, count = m_rgClasses.GetSize(); i < count; i++) |
| delete m_rgClasses[i]; |
| m_rgClasses.RemoveAll(); |
| } |
| |
| void CFXJSE_Context::GetGlobalObject(CFXJSE_Value* pValue) { |
| ASSERT(pValue); |
| CFXJSE_ScopeUtil_IsolateHandleContext scope(this); |
| v8::Local<v8::Context> hContext = |
| v8::Local<v8::Context>::New(m_pIsolate, m_hContext); |
| v8::Local<v8::Object> hGlobalObject = hContext->Global(); |
| pValue->ForceSetValue(hGlobalObject); |
| } |
| |
| FX_BOOL CFXJSE_Context::ExecuteScript(const FX_CHAR* szScript, |
| CFXJSE_Value* lpRetValue, |
| CFXJSE_Value* lpNewThisObject) { |
| CFXJSE_ScopeUtil_IsolateHandleContext scope(this); |
| v8::TryCatch trycatch(m_pIsolate); |
| v8::Local<v8::String> hScriptString = |
| v8::String::NewFromUtf8(m_pIsolate, szScript); |
| if (lpNewThisObject == NULL) { |
| v8::Local<v8::Script> hScript = v8::Script::Compile(hScriptString); |
| if (!trycatch.HasCaught()) { |
| v8::Local<v8::Value> hValue = hScript->Run(); |
| if (!trycatch.HasCaught()) { |
| if (lpRetValue) { |
| lpRetValue->m_hValue.Reset(m_pIsolate, hValue); |
| } |
| return TRUE; |
| } |
| } |
| if (lpRetValue) { |
| lpRetValue->m_hValue.Reset(m_pIsolate, |
| FXJSE_CreateReturnValue(m_pIsolate, trycatch)); |
| } |
| return FALSE; |
| } else { |
| v8::Local<v8::Value> hNewThis = |
| v8::Local<v8::Value>::New(m_pIsolate, lpNewThisObject->m_hValue); |
| ASSERT(!hNewThis.IsEmpty()); |
| v8::Local<v8::Script> hWrapper = |
| v8::Script::Compile(v8::String::NewFromUtf8( |
| m_pIsolate, "(function () { return eval(arguments[0]); })")); |
| v8::Local<v8::Value> hWrapperValue = hWrapper->Run(); |
| ASSERT(hWrapperValue->IsFunction()); |
| v8::Local<v8::Function> hWrapperFn = hWrapperValue.As<v8::Function>(); |
| if (!trycatch.HasCaught()) { |
| v8::Local<v8::Value> rgArgs[] = {hScriptString}; |
| v8::Local<v8::Value> hValue = |
| hWrapperFn->Call(hNewThis.As<v8::Object>(), 1, rgArgs); |
| if (!trycatch.HasCaught()) { |
| if (lpRetValue) { |
| lpRetValue->m_hValue.Reset(m_pIsolate, hValue); |
| } |
| return TRUE; |
| } |
| } |
| if (lpRetValue) { |
| lpRetValue->m_hValue.Reset(m_pIsolate, |
| FXJSE_CreateReturnValue(m_pIsolate, trycatch)); |
| } |
| return FALSE; |
| } |
| } |
