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
|
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/pcie_peripheral/ash_usb_detector.h"
#include <memory>
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "chromeos/ash/components/dbus/fwupd/fwupd_client.h"
#include "chromeos/ash/components/fwupd/firmware_update_manager.h"
#include "chromeos/ash/components/peripheral_notification/peripheral_notification_manager.h"
#include "content/public/browser/device_service.h"
namespace ash {
namespace {
static AshUsbDetector* g_ash_usb_detector = nullptr;
constexpr int kRequestUpdatesIntervalInSeconds = 5;
constexpr int kMaxNumRequestUpdatesRetries = 3;
} // namespace
AshUsbDetector::AshUsbDetector() {
DCHECK(!g_ash_usb_detector);
g_ash_usb_detector = this;
fetch_updates_repeating_timer_ = std::make_unique<base::RepeatingTimer>();
}
AshUsbDetector::~AshUsbDetector() {
DCHECK_EQ(this, g_ash_usb_detector);
g_ash_usb_detector = nullptr;
}
// static
AshUsbDetector* AshUsbDetector::Get() {
return g_ash_usb_detector;
}
void AshUsbDetector::ConnectToDeviceManager() {
if (!device_manager_) {
content::GetDeviceService().BindUsbDeviceManager(
device_manager_.BindNewPipeAndPassReceiver());
}
DCHECK(device_manager_);
device_manager_.set_disconnect_handler(
base::BindOnce(&AshUsbDetector::OnDeviceManagerConnectionError,
weak_ptr_factory_.GetWeakPtr()));
// Listen for added/removed device events.
DCHECK(!client_receiver_.is_bound());
device_manager_->EnumerateDevicesAndSetClient(
client_receiver_.BindNewEndpointAndPassRemote(),
base::BindOnce(&AshUsbDetector::OnListAttachedDevices,
weak_ptr_factory_.GetWeakPtr()));
}
int32_t AshUsbDetector::GetOnDeviceCheckedCountForTesting() {
return on_device_checked_counter_for_testing_;
}
void AshUsbDetector::OnDeviceAdded(
device::mojom::UsbDeviceInfoPtr device_info) {
std::string guid = device_info->guid;
device_manager_->CheckAccess(
guid,
base::BindOnce(&AshUsbDetector::OnDeviceChecked,
weak_ptr_factory_.GetWeakPtr(), std::move(device_info)));
RequestAllUpdatesWithRepeatDelay();
}
void AshUsbDetector::OnDeviceRemoved(
device::mojom::UsbDeviceInfoPtr device_info) {
RequestAllUpdatesWithRepeatDelay();
}
void AshUsbDetector::RequestAllUpdatesWithRepeatDelay() {
if (!fetch_updates_repeating_timer_->IsRunning()) {
num_request_updates_repeats_ = kMaxNumRequestUpdatesRetries;
fetch_updates_repeating_timer_->Start(
FROM_HERE, base::Seconds(kRequestUpdatesIntervalInSeconds),
base::BindRepeating(&AshUsbDetector::RequestUpdates,
base::Unretained(this)));
} else {
// Request to fetch all updates was a called during a current repeat cycle.
// Reset the number of requests back to the default.
num_request_updates_repeats_ = kMaxNumRequestUpdatesRetries;
}
}
void AshUsbDetector::OnListAttachedDevices(
std::vector<device::mojom::UsbDeviceInfoPtr> devices) {
for (device::mojom::UsbDeviceInfoPtr& device_info : devices)
AshUsbDetector::OnDeviceAdded(std::move(device_info));
}
void AshUsbDetector::OnDeviceChecked(
device::mojom::UsbDeviceInfoPtr device_info,
bool allowed) {
if (!allowed)
return;
ash::PeripheralNotificationManager::Get()->OnDeviceConnected(
device_info.get());
if (is_testing_)
++on_device_checked_counter_for_testing_;
}
void AshUsbDetector::OnDeviceManagerConnectionError() {
device_manager_.reset();
client_receiver_.reset();
ConnectToDeviceManager();
}
void AshUsbDetector::RequestUpdates() {
if (is_testing_) {
++num_request_for_fetch_updates_for_testing_;
} else {
if (FirmwareUpdateManager::IsInitialized()) {
FirmwareUpdateManager::Get()->RequestAllUpdates(
FirmwareUpdateManager::Source::kUSBChange);
}
}
--num_request_updates_repeats_;
if (num_request_updates_repeats_ == 0) {
fetch_updates_repeating_timer_->Stop();
}
}
void AshUsbDetector::SetDeviceManagerForTesting(
mojo::PendingRemote<device::mojom::UsbDeviceManager> device_manager) {
DCHECK(!device_manager_) << "device_manager_ was already initialized";
device_manager_.Bind(std::move(device_manager));
is_testing_ = true;
}
void AshUsbDetector::SetFetchUpdatesTimerForTesting(
std::unique_ptr<base::RepeatingTimer> timer) {
fetch_updates_repeating_timer_ = std::move(timer);
}
} // namespace ash
|
