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) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <ifaddrs.h>
#include <net/if.h>
#include <sys/types.h>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <netdutils/MockSyscalls.h>
#include <netdutils/Utils.h>
#include "InterfaceController.h"
using testing::ByMove;
using testing::Invoke;
using testing::Return;
using testing::StrictMock;
using testing::_;
namespace android {
namespace net {
namespace {
using netdutils::Fd;
using netdutils::getIfaceList;
using netdutils::getIfaceNames;
using netdutils::makeSlice;
using netdutils::ScopedMockSyscalls;
using netdutils::Slice;
using netdutils::Status;
using netdutils::statusFromErrno;
using netdutils::StatusOr;
using netdutils::UniqueFd;
using netdutils::status::ok;
constexpr Fd kDevRandomFd(777);
constexpr Fd kStableSecretFd(9999);
const char kDevRandomPath[] = "/dev/random";
const char kTestIface[] = "wlan5";
const char kStableSecretProperty[] = "persist.netd.stable_secret";
const char kStableSecretPath[] = "/proc/sys/net/ipv6/conf/wlan5/stable_secret";
const char kTestIPv6Address[] = "\x20\x01\x0d\xb8\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F\x10";
const char kTestIPv6AddressString[] = "2001:db8:506:708:90a:b0c:d0e:f10";
// getProperty() and setProperty() are forwarded to this mock
class MockProperties {
public:
MOCK_CONST_METHOD2(get, std::string(const std::string& key, const std::string& dflt));
MOCK_CONST_METHOD2(set, Status(const std::string& key, const std::string& val));
};
} // namespace
class StablePrivacyTest : public testing::Test {
protected:
void expectOpenFile(const std::string& path, const Fd fd, int err) {
if (err == 0) {
EXPECT_CALL(mSyscalls, open(path, _, _)).WillOnce(Return(ByMove(UniqueFd(fd))));
EXPECT_CALL(mSyscalls, close(fd)).WillOnce(Return(ok));
} else {
EXPECT_CALL(mSyscalls, open(path, _, _))
.WillOnce(Return(ByMove(statusFromErrno(err, "open() failed"))));
}
}
void expectReadFromDevRandom(const std::string& data) {
expectOpenFile(kDevRandomPath, kDevRandomFd, 0);
EXPECT_CALL(mSyscalls, read(kDevRandomFd, _)).WillOnce(Invoke([data](Fd, const Slice buf) {
EXPECT_EQ(data.size(), buf.size());
return take(buf, copy(buf, makeSlice(data)));
}));
}
void expectGetPropertyDefault(const std::string& key) {
EXPECT_CALL(mProperties, get(key, _))
.WillOnce(Invoke([](const std::string&, const std::string& dflt) { return dflt; }));
}
void expectGetProperty(const std::string& key, const std::string& val) {
EXPECT_CALL(mProperties, get(key, _))
.WillOnce(Invoke([val](const std::string&, const std::string&) { return val; }));
}
void expectSetProperty(const std::string& key, const std::string& val, Status status) {
EXPECT_CALL(mProperties, set(key, val)).WillOnce(Return(std::move(status)));
}
void expectWriteToFile(const Fd fd, const std::string& val, int err) {
EXPECT_CALL(mSyscalls, write(fd, _))
.WillOnce(Invoke([val, err](Fd, const Slice buf) -> StatusOr<size_t> {
EXPECT_EQ(val, toString(buf));
if (err) {
return statusFromErrno(err, "write() failed");
}
return val.size();
}));
}
Status enableStablePrivacyAddresses(const std::string& iface) {
return InterfaceController::enableStablePrivacyAddresses(iface, mGet, mSet);
}
StrictMock<ScopedMockSyscalls> mSyscalls;
StrictMock<MockProperties> mProperties;
const std::function<std::string(const std::string&, const std::string&)> mGet =
[this](const std::string& key, const std::string& dflt) {
return mProperties.get(key, dflt);
};
const std::function<Status(const std::string&, const std::string&)> mSet =
[this](const std::string& key, const std::string& val) {
return mProperties.set(key, val);
};
};
TEST_F(StablePrivacyTest, PropertyOpenEnoent) {
expectOpenFile(kStableSecretPath, kStableSecretFd, ENOENT);
EXPECT_NE(ok, enableStablePrivacyAddresses(kTestIface));
}
TEST_F(StablePrivacyTest, PropertyOpenEaccess) {
expectOpenFile(kStableSecretPath, kStableSecretFd, EACCES);
EXPECT_NE(ok, enableStablePrivacyAddresses(kTestIface));
}
TEST_F(StablePrivacyTest, FirstBootWriteOkSetPropertyOk) {
expectOpenFile(kStableSecretPath, kStableSecretFd, 0);
expectGetPropertyDefault(kStableSecretProperty);
expectReadFromDevRandom(kTestIPv6Address);
expectWriteToFile(kStableSecretFd, kTestIPv6AddressString, 0);
expectSetProperty(kStableSecretProperty, kTestIPv6AddressString, ok);
EXPECT_EQ(ok, enableStablePrivacyAddresses(kTestIface));
}
TEST_F(StablePrivacyTest, FirstBootWriteOkSetPropertyFail) {
const auto kError = statusFromErrno(EINVAL, "");
expectOpenFile(kStableSecretPath, kStableSecretFd, 0);
expectGetPropertyDefault(kStableSecretProperty);
expectReadFromDevRandom(kTestIPv6Address);
expectWriteToFile(kStableSecretFd, kTestIPv6AddressString, 0);
expectSetProperty(kStableSecretProperty, kTestIPv6AddressString, kError);
EXPECT_EQ(kError, enableStablePrivacyAddresses(kTestIface));
}
TEST_F(StablePrivacyTest, FirstBootWriteFail) {
expectOpenFile(kStableSecretPath, kStableSecretFd, 0);
expectGetPropertyDefault(kStableSecretProperty);
expectReadFromDevRandom(kTestIPv6Address);
expectWriteToFile(kStableSecretFd, kTestIPv6AddressString, ENOSPC);
EXPECT_NE(ok, enableStablePrivacyAddresses(kTestIface));
}
TEST_F(StablePrivacyTest, ExistingPropertyWriteOk) {
expectOpenFile(kStableSecretPath, kStableSecretFd, 0);
expectGetProperty(kStableSecretProperty, kTestIPv6AddressString);
expectWriteToFile(kStableSecretFd, kTestIPv6AddressString, 0);
EXPECT_EQ(ok, enableStablePrivacyAddresses(kTestIface));
}
TEST_F(StablePrivacyTest, ExistingPropertyWriteFail) {
expectOpenFile(kStableSecretPath, kStableSecretFd, 0);
expectGetProperty(kStableSecretProperty, kTestIPv6AddressString);
expectWriteToFile(kStableSecretFd, kTestIPv6AddressString, EACCES);
EXPECT_NE(ok, enableStablePrivacyAddresses(kTestIface));
}
class GetIfaceListTest : public testing::Test {};
TEST_F(GetIfaceListTest, IfaceNames) {
StatusOr<std::vector<std::string>> ifaceNames = getIfaceNames();
EXPECT_EQ(ok, ifaceNames.status());
struct ifaddrs *ifaddr, *ifa;
EXPECT_EQ(0, getifaddrs(&ifaddr));
for (ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) {
const auto val = std::find(
ifaceNames.value().begin(), ifaceNames.value().end(), ifa->ifa_name);
EXPECT_NE(ifaceNames.value().end(), val);
}
freeifaddrs(ifaddr);
}
TEST_F(GetIfaceListTest, IfaceExist) {
StatusOr<std::map<std::string, uint32_t>> ifaceMap = getIfaceList();
EXPECT_EQ(ok, ifaceMap.status());
struct ifaddrs *ifaddr, *ifa;
EXPECT_EQ(0, getifaddrs(&ifaddr));
for (ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) {
uint32_t ifaceIndex = if_nametoindex(ifa->ifa_name);
const auto ifacePair = ifaceMap.value().find(ifa->ifa_name);
EXPECT_NE(ifaceMap.value().end(), ifacePair);
EXPECT_EQ(ifaceIndex, ifacePair->second);
}
freeifaddrs(ifaddr);
}
} // namespace net
} // namespace android
|
