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
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/security_interstitials/content/captive_portal_helper.h"
#include <netlistmgr.h>
#include <wrl/client.h>
#include "base/win/scoped_variant.h"
namespace {
bool IsNetworkBehindCaptivePortal(INetwork* network) {
NLM_CONNECTIVITY connectivity;
if (FAILED(network->GetConnectivity(&connectivity)))
return false;
if (connectivity == NLM_CONNECTIVITY_DISCONNECTED)
return false;
Microsoft::WRL::ComPtr<IPropertyBag> property_bag;
if (FAILED(network->QueryInterface(IID_PPV_ARGS(&property_bag))) ||
!property_bag) {
return false;
}
base::win::ScopedVariant connectivity_variant;
if ((connectivity & NLM_CONNECTIVITY_IPV4_SUBNET) ||
(connectivity & NLM_CONNECTIVITY_IPV4_LOCALNETWORK) ||
(connectivity & NLM_CONNECTIVITY_IPV4_INTERNET)) {
// IPV4 connection:
if (SUCCEEDED(property_bag->Read(NA_InternetConnectivityV4,
connectivity_variant.Receive(),
nullptr)) &&
(V_UINT(connectivity_variant.ptr()) &
NLM_INTERNET_CONNECTIVITY_WEBHIJACK) ==
NLM_INTERNET_CONNECTIVITY_WEBHIJACK) {
return true;
}
} else if ((connectivity & NLM_CONNECTIVITY_IPV6_SUBNET) ||
(connectivity & NLM_CONNECTIVITY_IPV6_LOCALNETWORK) ||
(connectivity & NLM_CONNECTIVITY_IPV6_INTERNET)) {
// IPV6 connection:
if (SUCCEEDED(property_bag->Read(NA_InternetConnectivityV6,
connectivity_variant.Receive(),
nullptr)) &&
(V_UINT(connectivity_variant.ptr()) &
NLM_INTERNET_CONNECTIVITY_WEBHIJACK) ==
NLM_INTERNET_CONNECTIVITY_WEBHIJACK) {
return true;
}
}
return false;
}
} // namespace
namespace security_interstitials {
bool IsBehindCaptivePortal() {
// Assume the device is behind a captive portal if there is at least one
// connected network and all connected networks are behind captive portals.
Microsoft::WRL::ComPtr<INetworkListManager> network_list_manager;
if (FAILED(CoCreateInstance(CLSID_NetworkListManager, nullptr,
CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(&network_list_manager)))) {
return false;
}
Microsoft::WRL::ComPtr<IEnumNetworks> enum_networks;
if (FAILED(network_list_manager->GetNetworks(NLM_ENUM_NETWORK_CONNECTED,
&enum_networks))) {
return false;
}
if (!enum_networks)
return false;
bool found = false;
while (true) {
Microsoft::WRL::ComPtr<INetwork> network;
ULONG items_returned = 0;
// Note: MSDN documentation at
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa370740(v=vs.85).aspx
// says items_returned is set to NULL if the first parameter is 1, but this
// seems incorrect. In this call, items_returned is 1 until there are no
// networks. Then it becomes zero.
if (FAILED(enum_networks->Next(1, &network, &items_returned)))
return false;
if (items_returned == 0)
break;
if (!IsNetworkBehindCaptivePortal(network.Get()))
return false;
found = true;
}
return found;
}
} // namespace security_interstitials
|
