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
|
// Copyright 2014 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 "extensions/renderer/request_sender.h"
#include "base/metrics/histogram_macros.h"
#include "base/timer/elapsed_timer.h"
#include "base/values.h"
#include "content/public/renderer/render_frame.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension_messages.h"
#include "extensions/renderer/bindings/api_binding_types.h"
#include "extensions/renderer/ipc_message_sender.h"
#include "extensions/renderer/script_context.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_scoped_user_gesture.h"
#include "third_party/blink/public/web/web_user_gesture_indicator.h"
#include "third_party/blink/public/web/web_user_gesture_token.h"
namespace extensions {
// Contains info relevant to a pending API request.
struct PendingRequest {
public:
PendingRequest(const std::string& name,
RequestSender::Source* source,
blink::WebUserGestureToken token)
: name(name), source(source), token(token) {}
std::string name;
RequestSender::Source* source;
blink::WebUserGestureToken token;
};
RequestSender::RequestSender(IPCMessageSender* ipc_message_sender)
: ipc_message_sender_(ipc_message_sender) {}
RequestSender::~RequestSender() {}
void RequestSender::InsertRequest(
int request_id,
std::unique_ptr<PendingRequest> pending_request) {
DCHECK_EQ(0u, pending_requests_.count(request_id));
pending_requests_[request_id] = std::move(pending_request);
}
std::unique_ptr<PendingRequest> RequestSender::RemoveRequest(int request_id) {
PendingRequestMap::iterator i = pending_requests_.find(request_id);
if (i == pending_requests_.end())
return std::unique_ptr<PendingRequest>();
std::unique_ptr<PendingRequest> result = std::move(i->second);
pending_requests_.erase(i);
return result;
}
int RequestSender::GetNextRequestId() const {
static int next_request_id = 0;
return next_request_id++;
}
bool RequestSender::StartRequest(Source* source,
const std::string& name,
int request_id,
bool has_callback,
bool for_io_thread,
base::ListValue* value_args) {
ScriptContext* context = source->GetContext();
if (!context)
return false;
bool for_service_worker =
context->context_type() == Feature::SERVICE_WORKER_CONTEXT;
// Get the current RenderFrame so that we can send a routed IPC message from
// the correct source.
// Note that |render_frame| would be nullptr for Service Workers. Service
// Workers use control IPC instead.
content::RenderFrame* render_frame = context->GetRenderFrame();
if (!for_service_worker && !render_frame) {
// It is important to early exit here for non Service Worker contexts so
// that we do not create orphaned PendingRequests below.
return false;
}
// TODO(koz): See if we can make this a CHECK.
if (!context->HasAccessOrThrowError(name))
return false;
GURL source_url;
blink::WebLocalFrame* webframe = context->web_frame();
if (webframe)
source_url = webframe->GetDocument().Url();
InsertRequest(request_id,
std::make_unique<PendingRequest>(
name, source,
blink::WebUserGestureIndicator::CurrentUserGestureToken()));
auto params = std::make_unique<ExtensionHostMsg_Request_Params>();
params->name = name;
params->arguments.Swap(value_args);
params->extension_id = context->GetExtensionID();
params->source_url = source_url;
params->request_id = request_id;
params->has_callback = has_callback;
// TODO(mustaq): What to do with extension service workers without
// RenderFrames? crbug/733679
params->user_gesture =
blink::WebUserGestureIndicator::IsProcessingUserGestureThreadSafe(
webframe);
// Set Service Worker specific params to default values.
params->worker_thread_id = -1;
params->service_worker_version_id = kInvalidServiceWorkerVersionId;
binding::RequestThread thread =
for_io_thread ? binding::RequestThread::IO : binding::RequestThread::UI;
ipc_message_sender_->SendRequestIPC(context, std::move(params), thread);
return true;
}
void RequestSender::HandleResponse(int request_id,
bool success,
const base::ListValue& response,
const std::string& error) {
base::ElapsedTimer timer;
std::unique_ptr<PendingRequest> request = RemoveRequest(request_id);
if (!request.get()) {
// This can happen if a context is destroyed while a request is in flight.
return;
}
// TODO(devlin): Would it be useful to partition this data based on
// extension function once we have a suitable baseline? crbug.com/608561.
blink::WebScopedUserGesture gesture(request->token);
request->source->OnResponseReceived(
request->name, request_id, success, response, error);
UMA_HISTOGRAM_TIMES("Extensions.Functions.HandleResponseElapsedTime",
timer.Elapsed());
}
void RequestSender::InvalidateSource(Source* source) {
for (PendingRequestMap::iterator it = pending_requests_.begin();
it != pending_requests_.end();) {
if (it->second->source == source)
pending_requests_.erase(it++);
else
++it;
}
}
} // namespace extensions
|
