1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #include "JS_Runtime.h" 8 9 #include "Consts.h" 10 #include "Document.h" 11 #include "Field.h" 12 #include "Icon.h" 13 #include "JS_Context.h" 14 #include "JS_Define.h" 15 #include "JS_EventHandler.h" 16 #include "JS_GlobalData.h" 17 #include "JS_Object.h" 18 #include "JS_Value.h" 19 #include "PublicMethods.h" 20 #include "app.h" 21 #include "color.h" 22 #include "console.h" 23 #include "event.h" 24 #include "fpdfsdk/include/fsdk_mgr.h" // For CPDFDoc_Environment. 25 #include "fpdfsdk/include/javascript/IJavaScript.h" 26 #include "global.h" 27 #include "report.h" 28 #include "util.h" 29 #include "third_party/base/stl_util.h" 30 31 #ifdef PDF_ENABLE_XFA 32 #include "fpdfsdk/include/fpdfxfa/fpdfxfa_app.h" 33 #include "xfa/src/fxjse/src/value.h" 34 #endif // PDF_ENABLE_XFA 35 36 // static 37 void IJS_Runtime::Initialize(unsigned int slot, void* isolate) { 38 FXJS_Initialize(slot, reinterpret_cast<v8::Isolate*>(isolate)); 39 } 40 41 // static 42 IJS_Runtime* IJS_Runtime::Create(CPDFDoc_Environment* pEnv) { 43 return new CJS_Runtime(pEnv); 44 } 45 46 // static 47 CJS_Runtime* CJS_Runtime::FromContext(const IJS_Context* cc) { 48 const CJS_Context* pContext = static_cast<const CJS_Context*>(cc); 49 return pContext->GetJSRuntime(); 50 } 51 52 CJS_Runtime::CJS_Runtime(CPDFDoc_Environment* pApp) 53 : m_pApp(pApp), 54 m_pDocument(NULL), 55 m_bBlocking(FALSE), 56 m_isolate(NULL), 57 m_isolateManaged(false) { 58 #ifndef PDF_ENABLE_XFA 59 IPDF_JSPLATFORM* pPlatform = m_pApp->GetFormFillInfo()->m_pJsPlatform; 60 if (pPlatform->version <= 2) { 61 unsigned int embedderDataSlot = 0; 62 v8::Isolate* pExternalIsolate = nullptr; 63 if (pPlatform->version == 2) { 64 pExternalIsolate = reinterpret_cast<v8::Isolate*>(pPlatform->m_isolate); 65 embedderDataSlot = pPlatform->m_v8EmbedderSlot; 66 #else 67 if (CPDFXFA_App::GetInstance()->GetJSERuntime()) { 68 // TODO(tsepez): CPDFXFA_App should also use the embedder provided isolate. 69 m_isolate = (v8::Isolate*)CPDFXFA_App::GetInstance()->GetJSERuntime(); 70 } else { 71 IPDF_JSPLATFORM* pPlatform = m_pApp->GetFormFillInfo()->m_pJsPlatform; 72 if (pPlatform->version <= 2) { 73 unsigned int embedderDataSlot = 0; 74 v8::Isolate* pExternalIsolate = nullptr; 75 if (pPlatform->version == 2) { 76 pExternalIsolate = reinterpret_cast<v8::Isolate*>(pPlatform->m_isolate); 77 embedderDataSlot = pPlatform->m_v8EmbedderSlot; 78 } 79 FXJS_Initialize(embedderDataSlot, pExternalIsolate); 80 #endif 81 } 82 #ifndef PDF_ENABLE_XFA 83 FXJS_Initialize(embedderDataSlot, pExternalIsolate); 84 #else 85 m_isolateManaged = FXJS_GetIsolate(&m_isolate); 86 } 87 88 v8::Isolate* isolate = m_isolate; 89 v8::Isolate::Scope isolate_scope(isolate); 90 v8::Locker locker(isolate); 91 v8::HandleScope handle_scope(isolate); 92 if (CPDFXFA_App::GetInstance()->IsJavaScriptInitialized()) { 93 CJS_Context* pContext = (CJS_Context*)NewContext(); 94 FXJS_InitializeRuntime(GetIsolate(), this, &m_context, &m_StaticObjects); 95 ReleaseContext(pContext); 96 return; 97 #endif 98 } 99 #ifndef PDF_ENABLE_XFA 100 m_isolateManaged = FXJS_GetIsolate(&m_isolate); 101 #else 102 103 #endif 104 if (m_isolateManaged || FXJS_GlobalIsolateRefCount() == 0) 105 DefineJSObjects(); 106 107 #ifdef PDF_ENABLE_XFA 108 CPDFXFA_App::GetInstance()->SetJavaScriptInitialized(TRUE); 109 110 #endif 111 CJS_Context* pContext = (CJS_Context*)NewContext(); 112 FXJS_InitializeRuntime(GetIsolate(), this, &m_context, &m_StaticObjects); 113 ReleaseContext(pContext); 114 } 115 116 CJS_Runtime::~CJS_Runtime() { 117 for (auto* obs : m_observers) 118 obs->OnDestroyed(); 119 120 for (int i = 0, sz = m_ContextArray.GetSize(); i < sz; i++) 121 delete m_ContextArray.GetAt(i); 122 123 m_ContextArray.RemoveAll(); 124 #ifndef PDF_ENABLE_XFA 125 FXJS_ReleaseRuntime(GetIsolate(), &m_context, &m_StaticObjects); 126 #endif 127 128 m_pApp = NULL; 129 m_pDocument = NULL; 130 m_context.Reset(); 131 132 if (m_isolateManaged) 133 m_isolate->Dispose(); 134 } 135 136 void CJS_Runtime::DefineJSObjects() { 137 v8::Isolate::Scope isolate_scope(GetIsolate()); 138 #ifdef PDF_ENABLE_XFA 139 v8::Locker locker(GetIsolate()); 140 #endif 141 v8::HandleScope handle_scope(GetIsolate()); 142 v8::Local<v8::Context> context = v8::Context::New(GetIsolate()); 143 v8::Context::Scope context_scope(context); 144 145 // The call order determines the "ObjDefID" assigned to each class. 146 // ObjDefIDs 0 - 2 147 CJS_Border::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 148 CJS_Display::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 149 CJS_Font::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 150 151 // ObjDefIDs 3 - 5 152 CJS_Highlight::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 153 CJS_Position::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 154 CJS_ScaleHow::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 155 156 // ObjDefIDs 6 - 8 157 CJS_ScaleWhen::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 158 CJS_Style::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 159 CJS_Zoomtype::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 160 161 // ObjDefIDs 9 - 11 162 CJS_App::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 163 CJS_Color::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 164 CJS_Console::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 165 166 // ObjDefIDs 12 - 14 167 CJS_Document::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_GLOBAL); 168 CJS_Event::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 169 CJS_Field::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC); 170 171 // ObjDefIDs 15 - 17 172 CJS_Global::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 173 CJS_Icon::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC); 174 CJS_Util::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_STATIC); 175 176 // ObjDefIDs 18 - 20 (these can't fail, return void). 177 CJS_PublicMethods::DefineJSObjects(GetIsolate()); 178 CJS_GlobalConsts::DefineJSObjects(this); 179 CJS_GlobalArrays::DefineJSObjects(this); 180 181 // ObjDefIDs 21 - 22. 182 CJS_TimerObj::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC); 183 CJS_PrintParamsObj::DefineJSObjects(GetIsolate(), FXJSOBJTYPE_DYNAMIC); 184 } 185 186 IJS_Context* CJS_Runtime::NewContext() { 187 CJS_Context* p = new CJS_Context(this); 188 m_ContextArray.Add(p); 189 return p; 190 } 191 192 void CJS_Runtime::ReleaseContext(IJS_Context* pContext) { 193 CJS_Context* pJSContext = (CJS_Context*)pContext; 194 195 for (int i = 0, sz = m_ContextArray.GetSize(); i < sz; i++) { 196 if (pJSContext == m_ContextArray.GetAt(i)) { 197 delete pJSContext; 198 m_ContextArray.RemoveAt(i); 199 break; 200 } 201 } 202 } 203 204 IJS_Context* CJS_Runtime::GetCurrentContext() { 205 if (!m_ContextArray.GetSize()) 206 return NULL; 207 return m_ContextArray.GetAt(m_ContextArray.GetSize() - 1); 208 } 209 210 void CJS_Runtime::SetReaderDocument(CPDFSDK_Document* pReaderDoc) { 211 if (m_pDocument != pReaderDoc) { 212 v8::Isolate::Scope isolate_scope(m_isolate); 213 #ifdef PDF_ENABLE_XFA 214 v8::Locker locker(m_isolate); 215 #endif 216 v8::HandleScope handle_scope(m_isolate); 217 v8::Local<v8::Context> context = 218 v8::Local<v8::Context>::New(m_isolate, m_context); 219 v8::Context::Scope context_scope(context); 220 221 m_pDocument = pReaderDoc; 222 if (pReaderDoc) { 223 v8::Local<v8::Object> pThis = FXJS_GetThisObj(GetIsolate()); 224 if (!pThis.IsEmpty()) { 225 if (FXJS_GetObjDefnID(pThis) == CJS_Document::g_nObjDefnID) { 226 if (CJS_Document* pJSDocument = 227 (CJS_Document*)FXJS_GetPrivate(GetIsolate(), pThis)) { 228 if (Document* pDocument = (Document*)pJSDocument->GetEmbedObject()) 229 pDocument->AttachDoc(pReaderDoc); 230 } 231 } 232 } 233 } 234 } 235 } 236 237 int CJS_Runtime::Execute(IJS_Context* cc, 238 const wchar_t* script, 239 CFX_WideString* info) { 240 FXJSErr error = {}; 241 int nRet = FXJS_Execute(m_isolate, cc, script, &error); 242 if (nRet < 0) { 243 info->Format(L"[ Line: %05d { %s } ] : %s", error.linnum - 1, error.srcline, 244 error.message); 245 } 246 return nRet; 247 } 248 249 bool CJS_Runtime::AddEventToSet(const FieldEvent& event) { 250 return m_FieldEventSet.insert(event).second; 251 } 252 253 void CJS_Runtime::RemoveEventFromSet(const FieldEvent& event) { 254 m_FieldEventSet.erase(event); 255 } 256 257 v8::Local<v8::Context> CJS_Runtime::NewJSContext() { 258 return v8::Local<v8::Context>::New(m_isolate, m_context); 259 } 260 261 #ifdef PDF_ENABLE_XFA 262 CFX_WideString ChangeObjName(const CFX_WideString& str) { 263 CFX_WideString sRet = str; 264 sRet.Replace(L"_", L"."); 265 return sRet; 266 } 267 FX_BOOL CJS_Runtime::GetHValueByName(const CFX_ByteStringC& utf8Name, 268 FXJSE_HVALUE hValue) { 269 #ifdef PDF_ENABLE_XFA 270 const FX_CHAR* name = utf8Name.GetCStr(); 271 272 v8::Locker lock(GetIsolate()); 273 v8::Isolate::Scope isolate_scope(GetIsolate()); 274 v8::HandleScope handle_scope(GetIsolate()); 275 v8::Local<v8::Context> old_context = GetIsolate()->GetCurrentContext(); 276 v8::Local<v8::Context> context = 277 v8::Local<v8::Context>::New(GetIsolate(), m_context); 278 v8::Context::Scope context_scope(context); 279 280 // Caution: We're about to hand to XFA an object that in order to invoke 281 // methods will require that the current v8::Context always has a pointer 282 // to a CJS_Runtime in its embedder data slot. Unfortunately, XFA creates 283 // its own v8::Context which has not initialized the embedder data slot. 284 // Do so now. 285 // TODO(tsepez): redesign PDF-side objects to not rely on v8::Context's 286 // embedder data slots, and/or to always use the right context. 287 FXJS_SetRuntimeForV8Context(old_context, this); 288 289 v8::Local<v8::Value> propvalue = 290 context->Global()->Get(v8::String::NewFromUtf8( 291 GetIsolate(), name, v8::String::kNormalString, utf8Name.GetLength())); 292 293 if (propvalue.IsEmpty()) { 294 FXJSE_Value_SetUndefined(hValue); 295 return FALSE; 296 } 297 ((CFXJSE_Value*)hValue)->ForceSetValue(propvalue); 298 #endif 299 300 return TRUE; 301 } 302 FX_BOOL CJS_Runtime::SetHValueByName(const CFX_ByteStringC& utf8Name, 303 FXJSE_HVALUE hValue) { 304 #ifdef PDF_ENABLE_XFA 305 if (utf8Name.IsEmpty() || hValue == NULL) 306 return FALSE; 307 const FX_CHAR* name = utf8Name.GetCStr(); 308 v8::Isolate* pIsolate = GetIsolate(); 309 v8::Locker lock(pIsolate); 310 v8::Isolate::Scope isolate_scope(pIsolate); 311 v8::HandleScope handle_scope(pIsolate); 312 v8::Local<v8::Context> context = 313 v8::Local<v8::Context>::New(pIsolate, m_context); 314 v8::Context::Scope context_scope(context); 315 316 // v8::Local<v8::Context> tmpCotext = 317 // v8::Local<v8::Context>::New(GetIsolate(), m_context); 318 v8::Local<v8::Value> propvalue = v8::Local<v8::Value>::New( 319 GetIsolate(), ((CFXJSE_Value*)hValue)->DirectGetValue()); 320 context->Global()->Set( 321 v8::String::NewFromUtf8(pIsolate, name, v8::String::kNormalString, 322 utf8Name.GetLength()), 323 propvalue); 324 #endif 325 return TRUE; 326 } 327 328 #endif 329 void CJS_Runtime::AddObserver(Observer* observer) { 330 ASSERT(!pdfium::ContainsKey(m_observers, observer)); 331 m_observers.insert(observer); 332 } 333 334 void CJS_Runtime::RemoveObserver(Observer* observer) { 335 ASSERT(pdfium::ContainsKey(m_observers, observer)); 336 m_observers.erase(observer); 337 } 338
