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-rw-r--r--xfa/src/fxjse/context.cpp275
1 files changed, 275 insertions, 0 deletions
diff --git a/xfa/src/fxjse/context.cpp b/xfa/src/fxjse/context.cpp
new file mode 100644
index 0000000000..485869d797
--- /dev/null
+++ b/xfa/src/fxjse/context.cpp
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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 "xfa/src/fxjse/context.h"
+
+#include "xfa/src/fxjse/class.h"
+#include "xfa/src/fxjse/scope_inline.h"
+#include "xfa/src/fxjse/util_inline.h"
+#include "xfa/src/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;
+ }
+}