inspector/JSGlobalObjectInspectorController.cpp

   1 /*
   2  * Copyright (C) 2014 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "JSGlobalObjectInspectorController.h"
  28
  29 #if ENABLE(INSPECTOR)
  30
  31 #include "Completion.h"
  32 #include "ErrorHandlingScope.h"
  33 #include "InjectedScriptHost.h"
  34 #include "InjectedScriptManager.h"
  35 #include "InspectorAgent.h"
  36 #include "InspectorBackendDispatcher.h"
  37 #include "InspectorFrontendChannel.h"
  38 #include "JSConsoleClient.h"
  39 #include "JSGlobalObject.h"
  40 #include "JSGlobalObjectConsoleAgent.h"
  41 #include "JSGlobalObjectDebuggerAgent.h"
  42 #include "JSGlobalObjectProfilerAgent.h"
  43 #include "JSGlobalObjectRuntimeAgent.h"
  44 #include "ScriptArguments.h"
  45 #include "ScriptCallStack.h"
  46 #include "ScriptCallStackFactory.h"
  47 #include <cxxabi.h>
  48 #include <dlfcn.h>
  49 #include <execinfo.h>
  50
  51 using namespace JSC;
  52
  53 namespace Inspector {
  54
  55 JSGlobalObjectInspectorController::JSGlobalObjectInspectorController(JSGlobalObject& globalObject)
  56     : m_globalObject(globalObject)
  57     , m_injectedScriptManager(std::make_unique<InjectedScriptManager>(*this, InjectedScriptHost::create()))
  58     , m_inspectorFrontendChannel(nullptr)
  59     , m_includeNativeCallStackWithExceptions(true)
  60 {
  61     auto runtimeAgent = std::make_unique<JSGlobalObjectRuntimeAgent>(m_injectedScriptManager.get(), m_globalObject);
  62     auto consoleAgent = std::make_unique<JSGlobalObjectConsoleAgent>(m_injectedScriptManager.get());
  63     auto debuggerAgent = std::make_unique<JSGlobalObjectDebuggerAgent>(m_injectedScriptManager.get(), m_globalObject, consoleAgent.get());
  64     auto profilerAgent = std::make_unique<JSGlobalObjectProfilerAgent>(m_globalObject);
  65
  66     m_consoleAgent = consoleAgent.get();
  67     m_consoleClient = std::make_unique<JSConsoleClient>(m_consoleAgent, profilerAgent.get());
  68
  69     runtimeAgent->setScriptDebugServer(&debuggerAgent->scriptDebugServer());
  70     profilerAgent->setScriptDebugServer(&debuggerAgent->scriptDebugServer());
  71
  72     m_agents.append(std::make_unique<InspectorAgent>());
  73     m_agents.append(WTF::move(runtimeAgent));
  74     m_agents.append(WTF::move(consoleAgent));
  75     m_agents.append(WTF::move(debuggerAgent));
  76 }
  77
  78 JSGlobalObjectInspectorController::~JSGlobalObjectInspectorController()
  79 {
  80     m_agents.discardAgents();
  81 }
  82
  83 void JSGlobalObjectInspectorController::globalObjectDestroyed()
  84 {
  85     disconnectFrontend(InspectorDisconnectReason::InspectedTargetDestroyed);
  86
  87     m_injectedScriptManager->disconnect();
  88 }
  89
  90 void JSGlobalObjectInspectorController::connectFrontend(InspectorFrontendChannel* frontendChannel)
  91 {
  92     ASSERT(!m_inspectorFrontendChannel);
  93     ASSERT(!m_inspectorBackendDispatcher);
  94
  95     m_inspectorFrontendChannel = frontendChannel;
  96     m_inspectorBackendDispatcher = InspectorBackendDispatcher::create(frontendChannel);
  97
  98     m_agents.didCreateFrontendAndBackend(frontendChannel, m_inspectorBackendDispatcher.get());
  99 }
 100
 101 void JSGlobalObjectInspectorController::disconnectFrontend(InspectorDisconnectReason reason)
 102 {
 103     if (!m_inspectorFrontendChannel)
 104         return;
 105
 106     m_agents.willDestroyFrontendAndBackend(reason);
 107
 108     m_inspectorBackendDispatcher->clearFrontend();
 109     m_inspectorBackendDispatcher.clear();
 110     m_inspectorFrontendChannel = nullptr;
 111 }
 112
 113 void JSGlobalObjectInspectorController::dispatchMessageFromFrontend(const String& message)
 114 {
 115     if (m_inspectorBackendDispatcher)
 116         m_inspectorBackendDispatcher->dispatch(message);
 117 }
 118
 119 void JSGlobalObjectInspectorController::appendAPIBacktrace(ScriptCallStack* callStack)
 120 {
 121     static const int framesToShow = 31;
 122     static const int framesToSkip = 3; // WTFGetBacktrace, appendAPIBacktrace, reportAPIException.
 123
 124     void* samples[framesToShow + framesToSkip];
 125     int frames = framesToShow + framesToSkip;
 126     WTFGetBacktrace(samples, &frames);
 127
 128     void** stack = samples + framesToSkip;
 129     int size = frames - framesToSkip;
 130     for (int i = 0; i < size; ++i) {
 131         const char* mangledName = nullptr;
 132         char* cxaDemangled = nullptr;
 133         Dl_info info;
 134         if (dladdr(stack[i], &info) && info.dli_sname)
 135             mangledName = info.dli_sname;
 136         if (mangledName)
 137             cxaDemangled = abi::__cxa_demangle(mangledName, nullptr, nullptr, nullptr);
 138         if (mangledName || cxaDemangled)
 139             callStack->append(ScriptCallFrame(cxaDemangled ? cxaDemangled : mangledName, ASCIILiteral("[native code]"), 0, 0));
 140         else
 141             callStack->append(ScriptCallFrame(ASCIILiteral("?"), ASCIILiteral("[native code]"), 0, 0));
 142         free(cxaDemangled);
 143     }
 144 }
 145
 146 void JSGlobalObjectInspectorController::reportAPIException(ExecState* exec, JSValue exception)
 147 {
 148     if (isTerminatedExecutionException(exception))
 149         return;
 150
 151     ErrorHandlingScope errorScope(exec->vm());
 152
 153     RefPtr<ScriptCallStack> callStack = createScriptCallStackFromException(exec, exception, ScriptCallStack::maxCallStackSizeToCapture);
 154     if (includesNativeCallStackWhenReportingExceptions())
 155         appendAPIBacktrace(callStack.get());
 156
 157     // FIXME: <http://webkit.org/b/115087> Web Inspector: Should not evaluate JavaScript handling exceptions
 158     // If this is a custom exception object, call toString on it to try and get a nice string representation for the exception.
 159     String errorMessage = exception.toString(exec)->value(exec);
 160     exec->clearException();
 161
 162     if (JSConsoleClient::logToSystemConsole()) {
 163         if (callStack->size()) {
 164             const ScriptCallFrame& callFrame = callStack->at(0);
 165             ConsoleClient::printConsoleMessage(MessageSource::JS, MessageType::Log, MessageLevel::Error, errorMessage, callFrame.sourceURL(), callFrame.lineNumber(), callFrame.columnNumber());
 166         } else
 167             ConsoleClient::printConsoleMessage(MessageSource::JS, MessageType::Log, MessageLevel::Error, errorMessage, String(), 0, 0);
 168     }
 169
 170     m_consoleAgent->addMessageToConsole(MessageSource::JS, MessageType::Log, MessageLevel::Error, errorMessage, callStack);
 171 }
 172
 173 ConsoleClient* JSGlobalObjectInspectorController::consoleClient() const
 174 {
 175     return m_consoleClient.get();
 176 }
 177
 178 InspectorFunctionCallHandler JSGlobalObjectInspectorController::functionCallHandler() const
 179 {
 180     return JSC::call;
 181 }
 182
 183 InspectorEvaluateHandler JSGlobalObjectInspectorController::evaluateHandler() const
 184 {
 185     return JSC::evaluate;
 186 }
 187
 188 } // namespace Inspector
 189
 190 #endif // ENABLE(INSPECTOR)