1 /*
2 * Copyright (c) 2010 Google 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 are
6 * met:
7 *
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 * * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include "config.h"
32 #include "bindings/core/v8/ScriptCallStackFactory.h"
33
34 #include "bindings/core/v8/ScriptValue.h"
35 #include "bindings/core/v8/V8Binding.h"
36 #include "core/inspector/InspectorInstrumentation.h"
37 #include "core/inspector/ScriptArguments.h"
38 #include "core/inspector/ScriptCallFrame.h"
39 #include "core/inspector/ScriptCallStack.h"
40 #include "platform/JSONValues.h"
41 #include "wtf/text/StringBuilder.h"
42
43 #include <v8-debug.h>
44
45 namespace blink {
46
47 class ExecutionContext;
48
toScriptCallFrame(v8::Handle<v8::StackFrame> frame)49 static ScriptCallFrame toScriptCallFrame(v8::Handle<v8::StackFrame> frame)
50 {
51 StringBuilder stringBuilder;
52 stringBuilder.appendNumber(frame->GetScriptId());
53 String scriptId = stringBuilder.toString();
54 String sourceName;
55 v8::Local<v8::String> sourceNameValue(frame->GetScriptNameOrSourceURL());
56 if (!sourceNameValue.IsEmpty())
57 sourceName = toCoreString(sourceNameValue);
58
59 String functionName;
60 v8::Local<v8::String> functionNameValue(frame->GetFunctionName());
61 if (!functionNameValue.IsEmpty())
62 functionName = toCoreString(functionNameValue);
63
64 int sourceLineNumber = frame->GetLineNumber();
65 int sourceColumn = frame->GetColumn();
66 return ScriptCallFrame(functionName, scriptId, sourceName, sourceLineNumber, sourceColumn);
67 }
68
toScriptCallFramesVector(v8::Handle<v8::StackTrace> stackTrace,Vector<ScriptCallFrame> & scriptCallFrames,size_t maxStackSize,bool emptyStackIsAllowed,v8::Isolate * isolate)69 static void toScriptCallFramesVector(v8::Handle<v8::StackTrace> stackTrace, Vector<ScriptCallFrame>& scriptCallFrames, size_t maxStackSize, bool emptyStackIsAllowed, v8::Isolate* isolate)
70 {
71 ASSERT(isolate->InContext());
72 int frameCount = stackTrace->GetFrameCount();
73 if (frameCount > static_cast<int>(maxStackSize))
74 frameCount = maxStackSize;
75 for (int i = 0; i < frameCount; i++) {
76 v8::Local<v8::StackFrame> stackFrame = stackTrace->GetFrame(i);
77 scriptCallFrames.append(toScriptCallFrame(stackFrame));
78 }
79 if (!frameCount && !emptyStackIsAllowed) {
80 // Successfully grabbed stack trace, but there are no frames. It may happen in case
81 // when a bound function is called from native code for example.
82 // Fallback to setting lineNumber to 0, and source and function name to "undefined".
83 scriptCallFrames.append(ScriptCallFrame());
84 }
85 }
86
createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace,size_t maxStackSize,bool emptyStackIsAllowed,v8::Isolate * isolate)87 static PassRefPtrWillBeRawPtr<ScriptCallStack> createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace, size_t maxStackSize, bool emptyStackIsAllowed, v8::Isolate* isolate)
88 {
89 ASSERT(isolate->InContext());
90 v8::HandleScope scope(isolate);
91 Vector<ScriptCallFrame> scriptCallFrames;
92 toScriptCallFramesVector(stackTrace, scriptCallFrames, maxStackSize, emptyStackIsAllowed, isolate);
93 RefPtrWillBeRawPtr<ScriptCallStack> callStack = ScriptCallStack::create(scriptCallFrames);
94 if (InspectorInstrumentation::hasFrontends() && maxStackSize > 1)
95 InspectorInstrumentation::appendAsyncCallStack(currentExecutionContext(isolate), callStack.get());
96 return callStack.release();
97 }
98
createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace,size_t maxStackSize,v8::Isolate * isolate)99 PassRefPtrWillBeRawPtr<ScriptCallStack> createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace, size_t maxStackSize, v8::Isolate* isolate)
100 {
101 return createScriptCallStack(stackTrace, maxStackSize, true, isolate);
102 }
103
createScriptCallStack(size_t maxStackSize,bool emptyStackIsAllowed)104 PassRefPtrWillBeRawPtr<ScriptCallStack> createScriptCallStack(size_t maxStackSize, bool emptyStackIsAllowed)
105 {
106 v8::Isolate* isolate = v8::Isolate::GetCurrent();
107 if (!isolate->InContext())
108 return nullptr;
109 v8::HandleScope handleScope(isolate);
110 v8::Handle<v8::StackTrace> stackTrace(v8::StackTrace::CurrentStackTrace(isolate, maxStackSize, stackTraceOptions));
111 return createScriptCallStack(stackTrace, maxStackSize, emptyStackIsAllowed, isolate);
112 }
113
createScriptCallStackForConsole(size_t maxStackSize,bool emptyStackIsAllowed)114 PassRefPtrWillBeRawPtr<ScriptCallStack> createScriptCallStackForConsole(size_t maxStackSize, bool emptyStackIsAllowed)
115 {
116 size_t stackSize = 1;
117 if (InspectorInstrumentation::hasFrontends()) {
118 v8::Isolate* isolate = v8::Isolate::GetCurrent();
119 if (!isolate->InContext())
120 return nullptr;
121 if (InspectorInstrumentation::consoleAgentEnabled(currentExecutionContext(isolate)))
122 stackSize = maxStackSize;
123 }
124 return createScriptCallStack(stackSize, emptyStackIsAllowed);
125 }
126
createScriptArguments(ScriptState * scriptState,const v8::FunctionCallbackInfo<v8::Value> & v8arguments,unsigned skipArgumentCount)127 PassRefPtrWillBeRawPtr<ScriptArguments> createScriptArguments(ScriptState* scriptState, const v8::FunctionCallbackInfo<v8::Value>& v8arguments, unsigned skipArgumentCount)
128 {
129 Vector<ScriptValue> arguments;
130 for (int i = skipArgumentCount; i < v8arguments.Length(); ++i)
131 arguments.append(ScriptValue(scriptState, v8arguments[i]));
132
133 return ScriptArguments::create(scriptState, arguments);
134 }
135
136 } // namespace blink
137