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
213
214
215
216
217
218
219
|
//
// Copyright (C) 2013 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 "shill/net/netlink_socket.h"
#include <linux/netlink.h>
#include <algorithm>
#include <string>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include "shill/net/byte_string.h"
#include "shill/net/mock_sockets.h"
#include "shill/net/netlink_message.h"
using std::min;
using std::string;
using testing::_;
using testing::Invoke;
using testing::Return;
using testing::Test;
namespace shill {
class NetlinkSocketTest;
const int kFakeFd = 99;
class NetlinkSocketTest : public Test {
public:
NetlinkSocketTest() {}
virtual ~NetlinkSocketTest() {}
virtual void SetUp() {
mock_sockets_ = new MockSockets();
netlink_socket_.sockets_.reset(mock_sockets_);
}
virtual void InitializeSocket(int fd) {
EXPECT_CALL(*mock_sockets_, Socket(PF_NETLINK, SOCK_DGRAM, NETLINK_GENERIC))
.WillOnce(Return(fd));
EXPECT_CALL(*mock_sockets_, SetReceiveBuffer(
fd, NetlinkSocket::kReceiveBufferSize)).WillOnce(Return(0));
EXPECT_CALL(*mock_sockets_, Bind(fd, _, sizeof(struct sockaddr_nl)))
.WillOnce(Return(0));
EXPECT_TRUE(netlink_socket_.Init());
}
protected:
MockSockets* mock_sockets_; // Owned by netlink_socket_.
NetlinkSocket netlink_socket_;
};
class FakeSocketRead {
public:
explicit FakeSocketRead(const ByteString& next_read_string) {
next_read_string_ = next_read_string;
}
// Copies |len| bytes of |next_read_string_| into |buf| and clears
// |next_read_string_|.
ssize_t FakeSuccessfulRead(int sockfd, void* buf, size_t len, int flags,
struct sockaddr* src_addr, socklen_t* addrlen) {
if (!buf) {
return -1;
}
int read_bytes = min(len, next_read_string_.GetLength());
memcpy(buf, next_read_string_.GetConstData(), read_bytes);
next_read_string_.Clear();
return read_bytes;
}
private:
ByteString next_read_string_;
};
TEST_F(NetlinkSocketTest, InitWorkingTest) {
SetUp();
InitializeSocket(kFakeFd);
EXPECT_CALL(*mock_sockets_, Close(kFakeFd));
}
TEST_F(NetlinkSocketTest, InitBrokenSocketTest) {
SetUp();
const int kBadFd = -1;
EXPECT_CALL(*mock_sockets_, Socket(PF_NETLINK, SOCK_DGRAM, NETLINK_GENERIC))
.WillOnce(Return(kBadFd));
EXPECT_CALL(*mock_sockets_, SetReceiveBuffer(_, _)).Times(0);
EXPECT_CALL(*mock_sockets_, Bind(_, _, _)).Times(0);
EXPECT_FALSE(netlink_socket_.Init());
}
TEST_F(NetlinkSocketTest, InitBrokenBufferTest) {
SetUp();
EXPECT_CALL(*mock_sockets_, Socket(PF_NETLINK, SOCK_DGRAM, NETLINK_GENERIC))
.WillOnce(Return(kFakeFd));
EXPECT_CALL(*mock_sockets_, SetReceiveBuffer(
kFakeFd, NetlinkSocket::kReceiveBufferSize)).WillOnce(Return(-1));
EXPECT_CALL(*mock_sockets_, Bind(kFakeFd, _, sizeof(struct sockaddr_nl)))
.WillOnce(Return(0));
EXPECT_TRUE(netlink_socket_.Init());
// Destructor.
EXPECT_CALL(*mock_sockets_, Close(kFakeFd));
}
TEST_F(NetlinkSocketTest, InitBrokenBindTest) {
SetUp();
EXPECT_CALL(*mock_sockets_, Socket(PF_NETLINK, SOCK_DGRAM, NETLINK_GENERIC))
.WillOnce(Return(kFakeFd));
EXPECT_CALL(*mock_sockets_, SetReceiveBuffer(
kFakeFd, NetlinkSocket::kReceiveBufferSize)).WillOnce(Return(0));
EXPECT_CALL(*mock_sockets_, Bind(kFakeFd, _, sizeof(struct sockaddr_nl)))
.WillOnce(Return(-1));
EXPECT_CALL(*mock_sockets_, Close(kFakeFd)).WillOnce(Return(0));
EXPECT_FALSE(netlink_socket_.Init());
}
TEST_F(NetlinkSocketTest, SendMessageTest) {
SetUp();
InitializeSocket(kFakeFd);
string message_string("This text is really arbitrary");
ByteString message(message_string.c_str(), message_string.size());
// Good Send.
EXPECT_CALL(*mock_sockets_,
Send(kFakeFd, message.GetConstData(), message.GetLength(), 0))
.WillOnce(Return(message.GetLength()));
EXPECT_TRUE(netlink_socket_.SendMessage(message));
// Short Send.
EXPECT_CALL(*mock_sockets_,
Send(kFakeFd, message.GetConstData(), message.GetLength(), 0))
.WillOnce(Return(message.GetLength() - 3));
EXPECT_FALSE(netlink_socket_.SendMessage(message));
// Bad Send.
EXPECT_CALL(*mock_sockets_,
Send(kFakeFd, message.GetConstData(), message.GetLength(), 0))
.WillOnce(Return(-1));
EXPECT_FALSE(netlink_socket_.SendMessage(message));
// Destructor.
EXPECT_CALL(*mock_sockets_, Close(kFakeFd));
}
TEST_F(NetlinkSocketTest, SequenceNumberTest) {
SetUp();
// Just a sequence number.
const uint32_t arbitrary_number = 42;
netlink_socket_.sequence_number_ = arbitrary_number;
EXPECT_EQ(arbitrary_number+1, netlink_socket_.GetSequenceNumber());
// Make sure we don't go to |NetlinkMessage::kBroadcastSequenceNumber|.
netlink_socket_.sequence_number_ = NetlinkMessage::kBroadcastSequenceNumber;
EXPECT_NE(NetlinkMessage::kBroadcastSequenceNumber,
netlink_socket_.GetSequenceNumber());
}
TEST_F(NetlinkSocketTest, GoodRecvMessageTest) {
SetUp();
InitializeSocket(kFakeFd);
ByteString message;
static const string next_read_string(
"Random text may include things like 'freaking fracking foo'.");
static const size_t read_size = next_read_string.size();
ByteString expected_results(next_read_string.c_str(), read_size);
FakeSocketRead fake_socket_read(expected_results);
// Expect one call to get the size...
EXPECT_CALL(*mock_sockets_,
RecvFrom(kFakeFd, _, _, MSG_TRUNC | MSG_PEEK, _, _))
.WillOnce(Return(read_size));
// ...and expect a second call to get the data.
EXPECT_CALL(*mock_sockets_,
RecvFrom(kFakeFd, _, read_size, 0, _, _))
.WillOnce(Invoke(&fake_socket_read, &FakeSocketRead::FakeSuccessfulRead));
EXPECT_TRUE(netlink_socket_.RecvMessage(&message));
EXPECT_TRUE(message.Equals(expected_results));
// Destructor.
EXPECT_CALL(*mock_sockets_, Close(kFakeFd));
}
TEST_F(NetlinkSocketTest, BadRecvMessageTest) {
SetUp();
InitializeSocket(kFakeFd);
ByteString message;
EXPECT_CALL(*mock_sockets_, RecvFrom(kFakeFd, _, _, _, _, _))
.WillOnce(Return(-1));
EXPECT_FALSE(netlink_socket_.RecvMessage(&message));
EXPECT_CALL(*mock_sockets_, Close(kFakeFd));
}
} // namespace shill.
|
