diff options
Diffstat (limited to 'xfa/fxjse/context.cpp')
| -rw-r--r-- | xfa/fxjse/context.cpp | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/xfa/fxjse/context.cpp b/xfa/fxjse/context.cpp new file mode 100644 index 0000000000..1b46a792f2 --- /dev/null +++ b/xfa/fxjse/context.cpp @@ -0,0 +1,275 @@ +// 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" + +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) { + CFXJSE_Context* pContext = reinterpret_cast<CFXJSE_Context*>(hContext); + if (pContext) { + delete pContext; + } +} + +FXJSE_HVALUE FXJSE_Context_GetGlobalObject(FXJSE_HCONTEXT hContext) { + CFXJSE_Context* pContext = reinterpret_cast<CFXJSE_Context*>(hContext); + if (!pContext) { + return NULL; + } + CFXJSE_Value* lpValue = CFXJSE_Value::Create(pContext->GetRuntime()); + ASSERT(lpValue); + pContext->GetGlobalObject(lpValue); + return reinterpret_cast<FXJSE_HVALUE>(lpValue); +} + +FXJSE_HRUNTIME FXJSE_Context_GetRuntime(FXJSE_HCONTEXT hContext) { + CFXJSE_Context* pContext = reinterpret_cast<CFXJSE_Context*>(hContext); + return pContext ? reinterpret_cast<FXJSE_HRUNTIME>(pContext->GetRuntime()) + : NULL; +} + +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, + FX_DWORD 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 = reinterpret_cast<CFXJSE_Context*>(hContext); + ASSERT(pContext); + 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; +} + +FX_BOOL FXJSE_ReturnValue_GetMessage(FXJSE_HVALUE hRetValue, + CFX_ByteString& utf8Name, + CFX_ByteString& utf8Message) { + CFXJSE_Value* lpValue = reinterpret_cast<CFXJSE_Value*>(hRetValue); + if (!lpValue) { + return FALSE; + } + v8::Isolate* pIsolate = lpValue->GetIsolate(); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(pIsolate); + v8::Local<v8::Value> hValue = + v8::Local<v8::Value>::New(pIsolate, lpValue->DirectGetValue()); + if (!hValue->IsObject()) { + return FALSE; + } + v8::String::Utf8Value hStringVal0( + hValue.As<v8::Object>()->Get(0)->ToString()); + utf8Name = *hStringVal0; + v8::String::Utf8Value hStringVal1( + hValue.As<v8::Object>()->Get(1)->ToString()); + utf8Message = *hStringVal1; + return TRUE; +} + +FX_BOOL FXJSE_ReturnValue_GetLineInfo(FXJSE_HVALUE hRetValue, + int32_t& nLine, + int32_t& nCol) { + CFXJSE_Value* lpValue = reinterpret_cast<CFXJSE_Value*>(hRetValue); + if (!lpValue) { + return FALSE; + } + v8::Isolate* pIsolate = lpValue->GetIsolate(); + CFXJSE_ScopeUtil_IsolateHandleRootContext scope(pIsolate); + v8::Local<v8::Value> hValue = + v8::Local<v8::Value>::New(pIsolate, lpValue->DirectGetValue()); + if (!hValue->IsObject()) { + return FALSE; + } + v8::MaybeLocal<v8::Int32> maybe_int = + hValue.As<v8::Object>()->Get(3)->ToInt32(pIsolate->GetCurrentContext()); + nLine = maybe_int.FromMaybe(v8::Local<v8::Int32>())->Value(); + maybe_int = + hValue.As<v8::Object>()->Get(5)->ToInt32(pIsolate->GetCurrentContext()); + nCol = maybe_int.FromMaybe(v8::Local<v8::Int32>())->Value(); + return TRUE; +} + +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++) { + CFXJSE_Class* pClass = m_rgClasses[i]; + if (pClass) { + delete pClass; + } + } + 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; + } +} |