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
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/renderer/extensions/chrome_v8_extension.h"
#include "base/logging.h"
#include "base/lazy_instance.h"
#include "base/stringprintf.h"
#include "base/string_util.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/extensions/extension_set.h"
#include "chrome/common/extensions/api/extension_api.h"
#include "chrome/renderer/extensions/chrome_v8_context.h"
#include "chrome/renderer/extensions/extension_dispatcher.h"
#include "content/public/renderer/render_view.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
#include "ui/base/resource/resource_bundle.h"
using extensions::ExtensionAPI;
using WebKit::WebDocument;
using WebKit::WebFrame;
using WebKit::WebView;
namespace {
static base::LazyInstance<ChromeV8Extension::InstanceSet> g_instances =
LAZY_INSTANCE_INITIALIZER;
} // namespace
// static
base::StringPiece ChromeV8Extension::GetStringResource(int resource_id) {
return ResourceBundle::GetSharedInstance().GetRawDataResource(resource_id);
}
// static
content::RenderView* ChromeV8Extension::GetCurrentRenderView() {
WebFrame* webframe = WebFrame::frameForCurrentContext();
DCHECK(webframe) << "RetrieveCurrentFrame called when not in a V8 context.";
if (!webframe)
return NULL;
WebView* webview = webframe->view();
if (!webview)
return NULL; // can happen during closing
content::RenderView* renderview = content::RenderView::FromWebView(webview);
DCHECK(renderview) << "Encountered a WebView without a WebViewDelegate";
return renderview;
}
ChromeV8Extension::ChromeV8Extension(const char* name, int resource_id,
ExtensionDispatcher* extension_dispatcher)
: v8::Extension(name,
GetStringResource(resource_id).data(),
0, // num dependencies
NULL, // dependencies array
GetStringResource(resource_id).size()), // source length
extension_dispatcher_(extension_dispatcher) {
g_instances.Get().insert(this);
}
ChromeV8Extension::ChromeV8Extension(const char* name, int resource_id,
int dependency_count,
const char** dependencies,
ExtensionDispatcher* extension_dispatcher)
: v8::Extension(name,
GetStringResource(resource_id).data(),
dependency_count,
dependencies,
GetStringResource(resource_id).size()),
extension_dispatcher_(extension_dispatcher) {
g_instances.Get().insert(this);
}
ChromeV8Extension::~ChromeV8Extension() {
g_instances.Get().erase(this);
}
// static
const ChromeV8Extension::InstanceSet& ChromeV8Extension::GetAll() {
return g_instances.Get();
}
void ChromeV8Extension::ContextWillBeReleased(ChromeV8Context* context) {
handlers_.erase(context);
}
ChromeV8ExtensionHandler* ChromeV8Extension::GetHandler(
ChromeV8Context* context) const {
HandlerMap::const_iterator iter = handlers_.find(context);
if (iter == handlers_.end())
return NULL;
else
return iter->second.get();
}
const Extension* ChromeV8Extension::GetExtensionForCurrentRenderView() const {
content::RenderView* renderview = GetCurrentRenderView();
if (!renderview)
return NULL; // this can happen as a tab is closing.
WebDocument document = renderview->GetWebView()->mainFrame()->document();
GURL url = document.url();
const ExtensionSet* extensions = extension_dispatcher_->extensions();
if (!extensions->ExtensionBindingsAllowed(
ExtensionURLInfo(document.securityOrigin(), url)))
return NULL;
return extensions->GetExtensionOrAppByURL(
ExtensionURLInfo(document.securityOrigin(), url));
}
bool ChromeV8Extension::CheckCurrentContextAccessToExtensionAPI(
const std::string& function_name) const {
ChromeV8Context* context =
extension_dispatcher_->v8_context_set().GetCurrent();
if (!context) {
DLOG(ERROR) << "Not in a v8::Context";
return false;
}
const ::Extension* extension = NULL;
if (!context->extension_id().empty()) {
extension =
extension_dispatcher_->extensions()->GetByID(context->extension_id());
}
if (!extension || !extension->HasAPIPermission(function_name)) {
static const char kMessage[] =
"You do not have permission to use '%s'. Be sure to declare"
" in your manifest what permissions you need.";
std::string error_msg = base::StringPrintf(kMessage, function_name.c_str());
v8::ThrowException(
v8::Exception::Error(v8::String::New(error_msg.c_str())));
return false;
}
if (!extension_dispatcher_->IsExtensionActive(extension->id()) &&
ExtensionAPI::GetInstance()->IsPrivileged(function_name)) {
static const char kMessage[] =
"%s can only be used in an extension process.";
std::string error_msg = base::StringPrintf(kMessage, function_name.c_str());
v8::ThrowException(
v8::Exception::Error(v8::String::New(error_msg.c_str())));
return false;
}
return true;
}
v8::Handle<v8::FunctionTemplate>
ChromeV8Extension::GetNativeFunction(v8::Handle<v8::String> name) {
if (name->Equals(v8::String::New("GetChromeHidden"))) {
return v8::FunctionTemplate::New(GetChromeHidden);
}
if (name->Equals(v8::String::New("Print"))) {
return v8::FunctionTemplate::New(Print);
}
return v8::FunctionTemplate::New(HandleNativeFunction,
v8::External::New(this));
}
// static
v8::Handle<v8::Value> ChromeV8Extension::HandleNativeFunction(
const v8::Arguments& arguments) {
ChromeV8Extension* self = GetFromArguments<ChromeV8Extension>(arguments);
ChromeV8Context* context =
self->extension_dispatcher()->v8_context_set().GetCurrent();
CHECK(context) << "Unknown V8 context. Maybe a native function is getting "
<< "called during parse of a v8 extension, before the context "
<< "has been registered.";
ChromeV8ExtensionHandler* handler = self->GetHandler(context);
if (!handler) {
handler = self->CreateHandler(context);
if (handler)
self->handlers_[context] = linked_ptr<ChromeV8ExtensionHandler>(handler);
}
CHECK(handler) << "No handler for v8 extension: " << self->name();
std::string name = *v8::String::AsciiValue(arguments.Callee()->GetName());
return handler->HandleNativeFunction(name, arguments);
}
ChromeV8ExtensionHandler* ChromeV8Extension::CreateHandler(
ChromeV8Context* context) {
return NULL;
}
v8::Handle<v8::Value> ChromeV8Extension::GetChromeHidden(
const v8::Arguments& args) {
return ChromeV8Context::GetOrCreateChromeHidden(v8::Context::GetCurrent());
}
v8::Handle<v8::Value> ChromeV8Extension::Print(const v8::Arguments& args) {
if (args.Length() < 1)
return v8::Undefined();
std::vector<std::string> components;
for (int i = 0; i < args.Length(); ++i)
components.push_back(*v8::String::Utf8Value(args[i]->ToString()));
LOG(ERROR) << JoinString(components, ',');
return v8::Undefined();
}
|
