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
|
// Copyright (c) 2012 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 "chromeos/dbus/permission_broker_client.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/memory/weak_ptr.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_proxy.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
using permission_broker::kPermissionBrokerInterface;
using permission_broker::kPermissionBrokerServiceName;
using permission_broker::kPermissionBrokerServicePath;
using permission_broker::kRequestPathAccess;
using permission_broker::kRequestUsbAccess;
namespace chromeos {
class PermissionBrokerClientImpl : public PermissionBrokerClient {
public:
PermissionBrokerClientImpl() : proxy_(NULL), weak_ptr_factory_(this) {}
virtual void RequestPathAccess(const std::string& path,
const int interface_id,
const ResultCallback& callback) OVERRIDE {
dbus::MethodCall method_call(kPermissionBrokerInterface,
kRequestPathAccess);
dbus::MessageWriter writer(&method_call);
writer.AppendString(path);
writer.AppendInt32(interface_id);
proxy_->CallMethod(&method_call,
dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&PermissionBrokerClientImpl::OnResponse,
weak_ptr_factory_.GetWeakPtr(), callback));
}
virtual void RequestUsbAccess(const uint16_t vendor_id,
const uint16_t product_id,
const int interface_id,
const ResultCallback& callback) OVERRIDE {
dbus::MethodCall method_call(kPermissionBrokerInterface, kRequestUsbAccess);
dbus::MessageWriter writer(&method_call);
writer.AppendUint16(vendor_id);
writer.AppendUint16(product_id);
writer.AppendInt32(interface_id);
proxy_->CallMethod(&method_call,
dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
base::Bind(&PermissionBrokerClientImpl::OnResponse,
weak_ptr_factory_.GetWeakPtr(), callback));
}
protected:
virtual void Init(dbus::Bus* bus) OVERRIDE {
proxy_ =
bus->GetObjectProxy(kPermissionBrokerServiceName,
dbus::ObjectPath(kPermissionBrokerServicePath));
}
private:
// Handle a DBus response from the permission broker, invoking the callback
// that the method was originally called with with the success response.
void OnResponse(const ResultCallback& callback, dbus::Response* response) {
if (!response) {
LOG(WARNING) << "Access request method call failed.";
callback.Run(false);
return;
}
bool result = false;
dbus::MessageReader reader(response);
if (!reader.PopBool(&result))
LOG(WARNING) << "Could not parse response: " << response->ToString();
callback.Run(result);
}
dbus::ObjectProxy* proxy_;
// Note: This should remain the last member so that it will be destroyed
// first, invalidating its weak pointers, before the other members are
// destroyed.
base::WeakPtrFactory<PermissionBrokerClientImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(PermissionBrokerClientImpl);
};
PermissionBrokerClient::PermissionBrokerClient() {}
PermissionBrokerClient::~PermissionBrokerClient() {}
PermissionBrokerClient* PermissionBrokerClient::Create() {
return new PermissionBrokerClientImpl();
}
} // namespace chromeos
|
