Skip to content
Navigation Menu
{{ message }}
forked from nodejs/node
-
Notifications
You must be signed in to change notification settings - Fork 1
Expand file tree
/
Copy pathnode_dtrace.cc
More file actions
310 lines (262 loc) · 12.9 KB
/
Copy pathnode_dtrace.cc
File metadata and controls
310 lines (262 loc) · 12.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#include "node_dtrace.h"
#ifdef HAVE_DTRACE
#include "node_provider.h"
#elif HAVE_ETW
#include "node_win32_etw_provider-inl.h"
#else
#define NODE_HTTP_SERVER_REQUEST(arg0, arg1)
#define NODE_HTTP_SERVER_REQUEST_ENABLED() (0)
#define NODE_HTTP_SERVER_RESPONSE(arg0)
#define NODE_HTTP_SERVER_RESPONSE_ENABLED() (0)
#define NODE_HTTP_CLIENT_REQUEST(arg0, arg1)
#define NODE_HTTP_CLIENT_REQUEST_ENABLED() (0)
#define NODE_HTTP_CLIENT_RESPONSE(arg0)
#define NODE_HTTP_CLIENT_RESPONSE_ENABLED() (0)
#define NODE_NET_SERVER_CONNECTION(arg0)
#define NODE_NET_SERVER_CONNECTION_ENABLED() (0)
#define NODE_NET_STREAM_END(arg0)
#define NODE_NET_STREAM_END_ENABLED() (0)
#define NODE_GC_START(arg0, arg1, arg2)
#define NODE_GC_DONE(arg0, arg1, arg2)
#endif
#include "env-inl.h"
#include "node_errors.h"
#include <cstring>
namespace node {
using v8::Context;
using v8::FunctionCallbackInfo;
using v8::GCCallbackFlags;
using v8::GCType;
using v8::HandleScope;
using v8::Isolate;
using v8::Local;
using v8::Object;
using v8::Value;
#define SLURP_STRING(obj, member, valp) \
if (!(obj)->IsObject()) { \
return node::THROW_ERR_INVALID_ARG_TYPE(env, \
"expected object for " #obj " to contain string member " #member); \
} \
node::Utf8Value _##member(env->isolate(), \
obj->Get(env->context(), \
OneByteString(env->isolate(), #member)).ToLocalChecked()); \
if ((*(const char **)valp = *_##member) == nullptr) \
*(const char **)valp = "<unknown>";
#define SLURP_INT(obj, member, valp) \
if (!(obj)->IsObject()) { \
return node::THROW_ERR_INVALID_ARG_TYPE( \
env, \
"expected object for " #obj " to contain integer member " #member); \
} \
*valp = obj->Get(env->context(), \
OneByteString(env->isolate(), #member)).ToLocalChecked() \
->Int32Value(env->context()) \
.FromJust();
#define SLURP_OBJECT(obj, member, valp) \
if (!(obj)->IsObject()) { \
return node::THROW_ERR_INVALID_ARG_TYPE(env, \
"expected object for " #obj " to contain object member " #member); \
} \
*valp = Local<Object>::Cast(obj->Get(env->context(), \
OneByteString(env->isolate(), #member)).ToLocalChecked());
#define SLURP_CONNECTION(arg, conn) \
if (!(arg)->IsObject()) { \
return node::THROW_ERR_INVALID_ARG_TYPE(env, \
"expected argument " #arg " to be a connection object"); \
} \
node_dtrace_connection_t conn; \
Local<Object> _##conn = Local<Object>::Cast(arg); \
Local<Value> _handle = \
(_##conn)->Get(env->context(), \
FIXED_ONE_BYTE_STRING(env->isolate(), "_handle")) \
.ToLocalChecked(); \
if (_handle->IsObject()) { \
SLURP_INT(_handle.As<Object>(), fd, &conn.fd); \
} else { \
conn.fd = -1; \
} \
SLURP_STRING(_##conn, remoteAddress, &conn.remote); \
SLURP_INT(_##conn, remotePort, &conn.port); \
SLURP_INT(_##conn, bufferSize, &conn.buffered);
#define SLURP_CONNECTION_HTTP_CLIENT(arg, conn) \
if (!(arg)->IsObject()) { \
return node::THROW_ERR_INVALID_ARG_TYPE(env, \
"expected argument " #arg " to be a connection object"); \
} \
node_dtrace_connection_t conn; \
Local<Object> _##conn = Local<Object>::Cast(arg); \
SLURP_INT(_##conn, fd, &conn.fd); \
SLURP_STRING(_##conn, host, &conn.remote); \
SLURP_INT(_##conn, port, &conn.port); \
SLURP_INT(_##conn, bufferSize, &conn.buffered);
#define SLURP_CONNECTION_HTTP_CLIENT_RESPONSE(arg0, arg1, conn) \
if (!(arg0)->IsObject()) { \
return node::THROW_ERR_INVALID_ARG_TYPE(env, \
"expected argument " #arg0 " to be a connection object"); \
} \
if (!(arg1)->IsObject()) { \
return node::THROW_ERR_INVALID_ARG_TYPE(env, \
"expected argument " #arg1 " to be a connection object"); \
} \
node_dtrace_connection_t conn; \
Local<Object> _##conn = Local<Object>::Cast(arg0); \
SLURP_INT(_##conn, fd, &conn.fd); \
SLURP_INT(_##conn, bufferSize, &conn.buffered); \
_##conn = Local<Object>::Cast(arg1); \
SLURP_STRING(_##conn, host, &conn.remote); \
SLURP_INT(_##conn, port, &conn.port);
void DTRACE_NET_SERVER_CONNECTION(const FunctionCallbackInfo<Value>& args) {
if (!NODE_NET_SERVER_CONNECTION_ENABLED())
return;
Environment* env = Environment::GetCurrent(args);
SLURP_CONNECTION(args[0], conn);
NODE_NET_SERVER_CONNECTION(&conn, conn.remote, conn.port, conn.fd);
}
void DTRACE_NET_STREAM_END(const FunctionCallbackInfo<Value>& args) {
if (!NODE_NET_STREAM_END_ENABLED())
return;
Environment* env = Environment::GetCurrent(args);
SLURP_CONNECTION(args[0], conn);
NODE_NET_STREAM_END(&conn, conn.remote, conn.port, conn.fd);
}
void DTRACE_HTTP_SERVER_REQUEST(const FunctionCallbackInfo<Value>& args) {
node_dtrace_http_server_request_t req;
if (!NODE_HTTP_SERVER_REQUEST_ENABLED())
return;
Environment* env = Environment::GetCurrent(args);
HandleScope scope(env->isolate());
Local<Object> arg0 = Local<Object>::Cast(args[0]);
Local<Object> headers;
memset(&req, 0, sizeof(req));
req._un.version = 1;
SLURP_STRING(arg0, url, &req.url);
SLURP_STRING(arg0, method, &req.method);
SLURP_OBJECT(arg0, headers, &headers);
if (!(headers)->IsObject()) {
return node::THROW_ERR_INVALID_ARG_TYPE(env,
"expected object for request to contain string member headers");
}
Local<Value> strfwdfor = headers->Get(
env->context(), env->x_forwarded_string()).ToLocalChecked();
node::Utf8Value fwdfor(env->isolate(), strfwdfor);
if (!strfwdfor->IsString() || (req.forwardedFor = *fwdfor) == nullptr)
req.forwardedFor = const_cast<char*>("");
SLURP_CONNECTION(args[1], conn);
NODE_HTTP_SERVER_REQUEST(&req, &conn, conn.remote, conn.port, req.method, \
req.url, conn.fd);
}
void DTRACE_HTTP_SERVER_RESPONSE(const FunctionCallbackInfo<Value>& args) {
if (!NODE_HTTP_SERVER_RESPONSE_ENABLED())
return;
Environment* env = Environment::GetCurrent(args);
SLURP_CONNECTION(args[0], conn);
NODE_HTTP_SERVER_RESPONSE(&conn, conn.remote, conn.port, conn.fd);
}
void DTRACE_HTTP_CLIENT_REQUEST(const FunctionCallbackInfo<Value>& args) {
node_dtrace_http_client_request_t req;
char* header;
if (!NODE_HTTP_CLIENT_REQUEST_ENABLED())
return;
Environment* env = Environment::GetCurrent(args);
HandleScope scope(env->isolate());
/*
* For the method and URL, we're going to dig them out of the header. This
* is not as efficient as it could be, but we would rather not force the
* caller here to retain their method and URL until the time at which
* DTRACE_HTTP_CLIENT_REQUEST can be called.
*/
Local<Object> arg0 = Local<Object>::Cast(args[0]);
SLURP_STRING(arg0, _header, &header);
req.method = header;
while (*header != '\0' && *header != ' ')
header++;
if (*header != '\0')
*header++ = '\0';
req.url = header;
while (*header != '\0' && *header != ' ')
header++;
*header = '\0';
SLURP_CONNECTION_HTTP_CLIENT(args[1], conn);
NODE_HTTP_CLIENT_REQUEST(&req, &conn, conn.remote, conn.port, req.method, \
req.url, conn.fd);
}
void DTRACE_HTTP_CLIENT_RESPONSE(const FunctionCallbackInfo<Value>& args) {
if (!NODE_HTTP_CLIENT_RESPONSE_ENABLED())
return;
Environment* env = Environment::GetCurrent(args);
SLURP_CONNECTION_HTTP_CLIENT_RESPONSE(args[0], args[1], conn);
NODE_HTTP_CLIENT_RESPONSE(&conn, conn.remote, conn.port, conn.fd);
}
void dtrace_gc_start(Isolate* isolate,
GCType type,
GCCallbackFlags flags,
void* data) {
// Previous versions of this probe point only logged type and flags.
// That's why for reasons of backwards compatibility the isolate goes last.
NODE_GC_START(type, flags, isolate);
}
void dtrace_gc_done(Isolate* isolate,
GCType type,
GCCallbackFlags flags,
void* data) {
// Previous versions of this probe point only logged type and flags.
// That's why for reasons of backwards compatibility the isolate goes last.
NODE_GC_DONE(type, flags, isolate);
}
void InitDTrace(Environment* env) {
#ifdef HAVE_ETW
// ETW is neither thread-safe nor does it clean up resources on exit,
// so we can use it only on the main thread.
if (env->is_main_thread()) {
init_etw();
}
#endif
// We need to use the variant of GC callbacks that takes data to
// avoid running into DCHECKs when multiple Environments try to add
// the same callback to the same isolate multiple times.
env->isolate()->AddGCPrologueCallback(dtrace_gc_start, env);
env->isolate()->AddGCEpilogueCallback(dtrace_gc_done, env);
env->AddCleanupHook([](void* data) {
Environment* env = static_cast<Environment*>(data);
env->isolate()->RemoveGCPrologueCallback(dtrace_gc_start, env);
env->isolate()->RemoveGCEpilogueCallback(dtrace_gc_done, env);
}, env);
}
void InitializeDTrace(Local<Object> target,
Local<Value> unused,
Local<Context> context,
void* priv) {
Environment* env = Environment::GetCurrent(context);
#if defined HAVE_DTRACE || defined HAVE_ETW
# define NODE_PROBE(name) env->SetMethod(target, #name, name);
NODE_PROBE(DTRACE_NET_SERVER_CONNECTION)
NODE_PROBE(DTRACE_NET_STREAM_END)
NODE_PROBE(DTRACE_HTTP_SERVER_REQUEST)
NODE_PROBE(DTRACE_HTTP_SERVER_RESPONSE)
NODE_PROBE(DTRACE_HTTP_CLIENT_REQUEST)
NODE_PROBE(DTRACE_HTTP_CLIENT_RESPONSE)
# undef NODE_PROBE
#endif
}
} // namespace node
NODE_MODULE_CONTEXT_AWARE_INTERNAL(dtrace, node::InitializeDTrace)
You can’t perform that action at this time.