GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: inspector_js_api.cc Lines: 191 211 90.5 %
Date: 2022-06-20 04:16:14 Branches: 37 78 47.4 %

Line Branch Exec Source
1
#include "base_object-inl.h"
2
#include "inspector_agent.h"
3
#include "inspector_io.h"
4
#include "memory_tracker-inl.h"
5
#include "node_external_reference.h"
6
#include "util-inl.h"
7
#include "v8-inspector.h"
8
#include "v8.h"
9
10
#include <memory>
11
12
namespace node {
13
namespace inspector {
14
namespace {
15
16
using v8::Context;
17
using v8::Function;
18
using v8::FunctionCallbackInfo;
19
using v8::FunctionTemplate;
20
using v8::Global;
21
using v8::HandleScope;
22
using v8::Isolate;
23
using v8::Local;
24
using v8::MaybeLocal;
25
using v8::NewStringType;
26
using v8::Object;
27
using v8::String;
28
using v8::Uint32;
29
using v8::Value;
30
31
using v8_inspector::StringBuffer;
32
using v8_inspector::StringView;
33
34
1230
std::unique_ptr<StringBuffer> ToProtocolString(Isolate* isolate,
35
                                               Local<Value> value) {
36
1230
  TwoByteValue buffer(isolate, value);
37
1230
  return StringBuffer::create(StringView(*buffer, buffer.length()));
38
}
39
40
struct LocalConnection {
41
919
  static std::unique_ptr<InspectorSession> Connect(
42
      Agent* inspector, std::unique_ptr<InspectorSessionDelegate> delegate) {
43
919
    return inspector->Connect(std::move(delegate), false);
44
  }
45
46
1269
  static Local<String> GetClassName(Environment* env) {
47
1269
    return FIXED_ONE_BYTE_STRING(env->isolate(), "Connection");
48
  }
49
};
50
51
struct MainThreadConnection {
52
2
  static std::unique_ptr<InspectorSession> Connect(
53
      Agent* inspector, std::unique_ptr<InspectorSessionDelegate> delegate) {
54
2
    return inspector->ConnectToMainThread(std::move(delegate), true);
55
  }
56
57
1269
  static Local<String> GetClassName(Environment* env) {
58
1269
    return FIXED_ONE_BYTE_STRING(env->isolate(), "MainThreadConnection");
59
  }
60
};
61
62
template <typename ConnectionType>
63
class JSBindingsConnection : public AsyncWrap {
64
 public:
65
  class JSBindingsSessionDelegate : public InspectorSessionDelegate {
66
   public:
67
1842
    JSBindingsSessionDelegate(Environment* env,
68
                              JSBindingsConnection* connection)
69
                              : env_(env),
70
1842
                                connection_(connection) {
71
1842
    }
72
73
14142
    void SendMessageToFrontend(const v8_inspector::StringView& message)
74
        override {
75
14142
      Isolate* isolate = env_->isolate();
76
14142
      HandleScope handle_scope(isolate);
77
28284
      Context::Scope context_scope(env_->context());
78
      Local<Value> argument;
79
14142
      if (!String::NewFromTwoByte(isolate, message.characters16(),
80
                                  NewStringType::kNormal,
81
28284
                                  message.length()).ToLocal(&argument)) return;
82
14142
      connection_->OnMessage(argument);
83
    }
84
85
   private:
86
    Environment* env_;
87
    BaseObjectPtr<JSBindingsConnection> connection_;
88
  };
89
90
1842
  JSBindingsConnection(Environment* env,
91
                       Local<Object> wrap,
92
                       Local<Function> callback)
93
                       : AsyncWrap(env, wrap, PROVIDER_INSPECTORJSBINDING),
94
1842
                         callback_(env->isolate(), callback) {
95
1842
    Agent* inspector = env->inspector_agent();
96
1842
    session_ = ConnectionType::Connect(
97
        inspector, std::make_unique<JSBindingsSessionDelegate>(env, this));
98
1842
  }
99
100
14142
  void OnMessage(Local<Value> value) {
101
28284
    MakeCallback(callback_.Get(env()->isolate()), 1, &value);
102
14142
  }
103
104
5076
  static void Bind(Environment* env, Local<Object> target) {
105
    Local<FunctionTemplate> tmpl =
106
5076
        env->NewFunctionTemplate(JSBindingsConnection::New);
107
10152
    tmpl->InstanceTemplate()->SetInternalFieldCount(
108
        JSBindingsConnection::kInternalFieldCount);
109
5076
    tmpl->Inherit(AsyncWrap::GetConstructorTemplate(env));
110
5076
    env->SetProtoMethod(tmpl, "dispatch", JSBindingsConnection::Dispatch);
111
5076
    env->SetProtoMethod(tmpl, "disconnect", JSBindingsConnection::Disconnect);
112
5076
    env->SetConstructorFunction(
113
        target,
114
        ConnectionType::GetClassName(env),
115
        tmpl);
116
5076
  }
117
118
1842
  static void New(const FunctionCallbackInfo<Value>& info) {
119
1842
    Environment* env = Environment::GetCurrent(info);
120
1842
    CHECK(info[0]->IsFunction());
121
3684
    Local<Function> callback = info[0].As<Function>();
122
1842
    new JSBindingsConnection(env, info.This(), callback);
123
1842
  }
124
125
1812
  void Disconnect() {
126
1812
    session_.reset();
127
1812
    delete this;
128
  }
129
130
1812
  static void Disconnect(const FunctionCallbackInfo<Value>& info) {
131
    JSBindingsConnection* session;
132
1812
    ASSIGN_OR_RETURN_UNWRAP(&session, info.Holder());
133
1812
    session->Disconnect();
134
  }
135
136
2460
  static void Dispatch(const FunctionCallbackInfo<Value>& info) {
137
2460
    Environment* env = Environment::GetCurrent(info);
138
    JSBindingsConnection* session;
139
2460
    ASSIGN_OR_RETURN_UNWRAP(&session, info.Holder());
140
4920
    CHECK(info[0]->IsString());
141
142
2460
    if (session->session_) {
143
4920
      session->session_->Dispatch(
144
4920
          ToProtocolString(env->isolate(), info[0])->string());
145
    }
146
  }
147
148
4
  void MemoryInfo(MemoryTracker* tracker) const override {
149
4
    tracker->TrackField("callback", callback_);
150
4
    tracker->TrackFieldWithSize(
151
        "session", sizeof(*session_), "InspectorSession");
152
  }
153
154
4
  SET_MEMORY_INFO_NAME(JSBindingsConnection)
155
2
  SET_SELF_SIZE(JSBindingsConnection)
156
157
  bool IsNotIndicativeOfMemoryLeakAtExit() const override {
158
    return true;  // Binding connections emit events on their own.
159
  }
160
161
 private:
162
  std::unique_ptr<InspectorSession> session_;
163
  Global<Function> callback_;
164
};
165
166
43657
static bool InspectorEnabled(Environment* env) {
167
43657
  Agent* agent = env->inspector_agent();
168
43657
  return agent->IsActive();
169
}
170
171
1269
void SetConsoleExtensionInstaller(const FunctionCallbackInfo<Value>& info) {
172
1269
  auto env = Environment::GetCurrent(info);
173
174
1269
  CHECK_EQ(info.Length(), 1);
175
1269
  CHECK(info[0]->IsFunction());
176
177
2538
  env->set_inspector_console_extension_installer(info[0].As<Function>());
178
1269
}
179
180
8
void CallAndPauseOnStart(const FunctionCallbackInfo<v8::Value>& args) {
181
8
  Environment* env = Environment::GetCurrent(args);
182
8
  CHECK_GT(args.Length(), 1);
183
8
  CHECK(args[0]->IsFunction());
184
14
  SlicedArguments call_args(args, /* start */ 2);
185
8
  env->inspector_agent()->PauseOnNextJavascriptStatement("Break on start");
186
  v8::MaybeLocal<v8::Value> retval =
187
22
      args[0].As<v8::Function>()->Call(env->context(), args[1],
188
16
                                       call_args.length(), call_args.out());
189
6
  if (!retval.IsEmpty()) {
190
10
    args.GetReturnValue().Set(retval.ToLocalChecked());
191
  }
192
6
}
193
194
43651
void InspectorConsoleCall(const FunctionCallbackInfo<Value>& info) {
195
43651
  Environment* env = Environment::GetCurrent(info);
196
43651
  Isolate* isolate = env->isolate();
197
43651
  Local<Context> context = isolate->GetCurrentContext();
198
43651
  CHECK_GE(info.Length(), 2);
199
43651
  SlicedArguments call_args(info, /* start */ 2);
200
43651
  if (InspectorEnabled(env)) {
201
43650
    Local<Value> inspector_method = info[0];
202
43650
    CHECK(inspector_method->IsFunction());
203
43650
    if (!env->is_in_inspector_console_call()) {
204
43649
      env->set_is_in_inspector_console_call(true);
205
      MaybeLocal<Value> ret =
206
43649
          inspector_method.As<Function>()->Call(context,
207
                                                info.Holder(),
208
43649
                                                call_args.length(),
209
130947
                                                call_args.out());
210
43649
      env->set_is_in_inspector_console_call(false);
211
43649
      if (ret.IsEmpty())
212
9
        return;
213
    }
214
  }
215
216
43642
  Local<Value> node_method = info[1];
217
43642
  CHECK(node_method->IsFunction());
218
87284
  USE(node_method.As<Function>()->Call(context,
219
                                   info.Holder(),
220
43642
                                   call_args.length(),
221
174568
                                   call_args.out()));
222
}
223
224
25
static void* GetAsyncTask(int64_t asyncId) {
225
  // The inspector assumes that when other clients use its asyncTask* API,
226
  // they use real pointers, or at least something aligned like real pointer.
227
  // In general it means that our task_id should always be even.
228
  //
229
  // On 32bit platforms, the 64bit asyncId would get truncated when converted
230
  // to a 32bit pointer. However, the javascript part will never enable
231
  // the async_hook on 32bit platforms, therefore the truncation will never
232
  // happen in practice.
233
25
  return reinterpret_cast<void*>(asyncId << 1);
234
}
235
236
template <void (Agent::*asyncTaskFn)(void*)>
237
44
static void InvokeAsyncTaskFnWithId(const FunctionCallbackInfo<Value>& args) {
238
44
  Environment* env = Environment::GetCurrent(args);
239
44
  CHECK(args[0]->IsNumber());
240
44
  int64_t task_id = args[0]->IntegerValue(env->context()).FromJust();
241
44
  (env->inspector_agent()->*asyncTaskFn)(GetAsyncTask(task_id));
242
44
}
243
244
3
static void AsyncTaskScheduledWrapper(const FunctionCallbackInfo<Value>& args) {
245
3
  Environment* env = Environment::GetCurrent(args);
246
247
6
  CHECK(args[0]->IsString());
248
6
  Local<String> task_name = args[0].As<String>();
249
6
  String::Value task_name_value(args.GetIsolate(), task_name);
250
3
  StringView task_name_view(*task_name_value, task_name_value.length());
251
252
3
  CHECK(args[1]->IsNumber());
253
3
  int64_t task_id = args[1]->IntegerValue(env->context()).FromJust();
254
3
  void* task = GetAsyncTask(task_id);
255
256
3
  CHECK(args[2]->IsBoolean());
257
3
  bool recurring = args[2]->BooleanValue(args.GetIsolate());
258
259
3
  env->inspector_agent()->AsyncTaskScheduled(task_name_view, task, recurring);
260
3
}
261
262
6444
static void RegisterAsyncHookWrapper(const FunctionCallbackInfo<Value>& args) {
263
6444
  Environment* env = Environment::GetCurrent(args);
264
265
6444
  CHECK(args[0]->IsFunction());
266
12888
  Local<Function> enable_function = args[0].As<Function>();
267
6444
  CHECK(args[1]->IsFunction());
268
6444
  Local<Function> disable_function = args[1].As<Function>();
269
6444
  env->inspector_agent()->RegisterAsyncHook(env->isolate(),
270
    enable_function, disable_function);
271
6444
}
272
273
6
void IsEnabled(const FunctionCallbackInfo<Value>& args) {
274
6
  Environment* env = Environment::GetCurrent(args);
275
6
  args.GetReturnValue().Set(InspectorEnabled(env));
276
6
}
277
278
void Open(const FunctionCallbackInfo<Value>& args) {
279
  Environment* env = Environment::GetCurrent(args);
280
  Agent* agent = env->inspector_agent();
281
282
  if (args.Length() > 0 && args[0]->IsUint32()) {
283
    uint32_t port = args[0].As<Uint32>()->Value();
284
    ExclusiveAccess<HostPort>::Scoped host_port(agent->host_port());
285
    host_port->set_port(static_cast<int>(port));
286
  }
287
288
  if (args.Length() > 1 && args[1]->IsString()) {
289
    Utf8Value host(env->isolate(), args[1].As<String>());
290
    ExclusiveAccess<HostPort>::Scoped host_port(agent->host_port());
291
    host_port->set_host(*host);
292
  }
293
294
  agent->StartIoThread();
295
}
296
297
void WaitForDebugger(const FunctionCallbackInfo<Value>& args) {
298
  Environment* env = Environment::GetCurrent(args);
299
  Agent* agent = env->inspector_agent();
300
  if (agent->IsActive())
301
    agent->WaitForConnect();
302
  args.GetReturnValue().Set(agent->IsActive());
303
}
304
305
6
void Url(const FunctionCallbackInfo<Value>& args) {
306
6
  Environment* env = Environment::GetCurrent(args);
307
6
  std::string url = env->inspector_agent()->GetWsUrl();
308
6
  if (url.empty()) {
309
1
    return;
310
  }
311
10
  args.GetReturnValue().Set(OneByteString(env->isolate(), url.c_str()));
312
}
313
314
1269
void Initialize(Local<Object> target, Local<Value> unused,
315
                Local<Context> context, void* priv) {
316
1269
  Environment* env = Environment::GetCurrent(context);
317
318
  v8::Local<v8::Function> consoleCallFunc =
319
1269
      env->NewFunctionTemplate(InspectorConsoleCall, v8::Local<v8::Signature>(),
320
                               v8::ConstructorBehavior::kThrow,
321
1269
                               v8::SideEffectType::kHasSideEffect)
322
1269
          ->GetFunction(context)
323
1269
          .ToLocalChecked();
324
1269
  auto name_string = FIXED_ONE_BYTE_STRING(env->isolate(), "consoleCall");
325
2538
  target->Set(context, name_string, consoleCallFunc).Check();
326
1269
  consoleCallFunc->SetName(name_string);
327
328
1269
  env->SetMethod(
329
      target, "setConsoleExtensionInstaller", SetConsoleExtensionInstaller);
330
1269
  env->SetMethod(target, "callAndPauseOnStart", CallAndPauseOnStart);
331
1269
  env->SetMethod(target, "open", Open);
332
1269
  env->SetMethodNoSideEffect(target, "url", Url);
333
1269
  env->SetMethod(target, "waitForDebugger", WaitForDebugger);
334
335
1269
  env->SetMethod(target, "asyncTaskScheduled", AsyncTaskScheduledWrapper);
336
1269
  env->SetMethod(target, "asyncTaskCanceled",
337
      InvokeAsyncTaskFnWithId<&Agent::AsyncTaskCanceled>);
338
1269
  env->SetMethod(target, "asyncTaskStarted",
339
      InvokeAsyncTaskFnWithId<&Agent::AsyncTaskStarted>);
340
1269
  env->SetMethod(target, "asyncTaskFinished",
341
      InvokeAsyncTaskFnWithId<&Agent::AsyncTaskFinished>);
342
343
1269
  env->SetMethod(target, "registerAsyncHook", RegisterAsyncHookWrapper);
344
1269
  env->SetMethodNoSideEffect(target, "isEnabled", IsEnabled);
345
346
  Local<String> console_string =
347
1269
      FIXED_ONE_BYTE_STRING(env->isolate(), "console");
348
349
  // Grab the console from the binding object and expose those to our binding
350
  // layer.
351
1269
  Local<Object> binding = context->GetExtrasBindingObject();
352
  target
353
1269
      ->Set(context,
354
            console_string,
355
2538
            binding->Get(context, console_string).ToLocalChecked())
356
      .Check();
357
358
1269
  JSBindingsConnection<LocalConnection>::Bind(env, target);
359
1269
  JSBindingsConnection<MainThreadConnection>::Bind(env, target);
360
1269
}
361
362
}  // namespace
363
364
5213
void RegisterExternalReferences(ExternalReferenceRegistry* registry) {
365
5213
  registry->Register(InspectorConsoleCall);
366
5213
  registry->Register(SetConsoleExtensionInstaller);
367
5213
  registry->Register(CallAndPauseOnStart);
368
5213
  registry->Register(Open);
369
5213
  registry->Register(Url);
370
5213
  registry->Register(WaitForDebugger);
371
372
5213
  registry->Register(AsyncTaskScheduledWrapper);
373
5213
  registry->Register(InvokeAsyncTaskFnWithId<&Agent::AsyncTaskCanceled>);
374
5213
  registry->Register(InvokeAsyncTaskFnWithId<&Agent::AsyncTaskStarted>);
375
5213
  registry->Register(InvokeAsyncTaskFnWithId<&Agent::AsyncTaskFinished>);
376
377
5213
  registry->Register(RegisterAsyncHookWrapper);
378
5213
  registry->Register(IsEnabled);
379
380
5213
  registry->Register(JSBindingsConnection<LocalConnection>::New);
381
5213
  registry->Register(JSBindingsConnection<LocalConnection>::Dispatch);
382
5213
  registry->Register(JSBindingsConnection<LocalConnection>::Disconnect);
383
5213
  registry->Register(JSBindingsConnection<MainThreadConnection>::New);
384
5213
  registry->Register(JSBindingsConnection<MainThreadConnection>::Dispatch);
385
5213
  registry->Register(JSBindingsConnection<MainThreadConnection>::Disconnect);
386
5213
}
387
388
}  // namespace inspector
389
}  // namespace node
390
391
5281
NODE_MODULE_CONTEXT_AWARE_INTERNAL(inspector,
392
                                  node::inspector::Initialize)
393
5213
NODE_MODULE_EXTERNAL_REFERENCE(inspector,
394
                               node::inspector::RegisterExternalReferences)