Paul Stewart | ac802ac | 2013-04-02 15:45:24 -0700 | [diff] [blame] | 1 | // Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "shill/eap_listener.h" |
| 6 | |
| 7 | #include <linux/if_ether.h> |
| 8 | #include <linux/if_packet.h> |
| 9 | #include <netinet/in.h> |
| 10 | #include <string.h> |
| 11 | |
| 12 | #include <base/bind.h> |
| 13 | #include <gtest/gtest.h> |
| 14 | |
| 15 | #include "shill/byte_string.h" |
| 16 | #include "shill/eap_protocol.h" |
| 17 | #include "shill/mock_event_dispatcher.h" |
| 18 | #include "shill/mock_log.h" |
| 19 | #include "shill/mock_sockets.h" |
| 20 | |
| 21 | using testing::_; |
| 22 | using testing::HasSubstr; |
| 23 | using testing::Invoke; |
| 24 | using testing::Return; |
| 25 | using testing::StrictMock; |
| 26 | |
| 27 | namespace shill { |
| 28 | |
| 29 | class EapListenerTest : public testing::Test { |
| 30 | public: |
| 31 | EapListenerTest() : listener_(&dispatcher_, kInterfaceIndex) {} |
| 32 | virtual ~EapListenerTest() {} |
| 33 | |
| 34 | virtual void SetUp() { |
| 35 | sockets_ = new StrictMock<MockSockets>(); |
| 36 | // Passes ownership. |
| 37 | listener_.sockets_.reset(sockets_); |
| 38 | listener_.set_request_received_callback( |
| 39 | base::Bind(&EapListenerTest::ReceiveCallback, base::Unretained(this))); |
| 40 | } |
| 41 | |
| 42 | virtual void TearDown() { |
| 43 | if (GetSocket() == kSocketFD) { |
| 44 | EXPECT_CALL(*sockets_, Close(kSocketFD)); |
| 45 | listener_.Stop(); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | ssize_t SimulateRecvFrom(int sockfd, void *buf, size_t len, int flags, |
| 50 | struct sockaddr *src_addr, socklen_t *addrlen); |
| 51 | |
| 52 | MOCK_METHOD0(ReceiveCallback, void()); |
| 53 | |
| 54 | protected: |
| 55 | static const int kInterfaceIndex; |
| 56 | static const int kSocketFD; |
| 57 | static const uint8 kEapPacketPayload[]; |
| 58 | |
| 59 | bool CreateSocket() { return listener_.CreateSocket(); } |
| 60 | int GetInterfaceIndex() { return listener_.interface_index_; } |
| 61 | size_t GetMaxEapPacketLength() { return EapListener::kMaxEapPacketLength; } |
| 62 | int GetSocket() { return listener_.socket_; } |
| 63 | void StartListener() { StartListenerWithFD(kSocketFD); } |
| 64 | void ReceiveRequest() { listener_.ReceiveRequest(kSocketFD); } |
| 65 | void StartListenerWithFD(int fd); |
| 66 | |
| 67 | MockEventDispatcher dispatcher_; |
| 68 | EapListener listener_; |
| 69 | |
| 70 | // Owned by EapListener, and tracked here only for mocks. |
| 71 | MockSockets *sockets_; |
| 72 | |
| 73 | // Tests can assign this in order to set the data isreturned in our |
| 74 | // mock implementation of Sockets::RecvFrom(). |
| 75 | ByteString recvfrom_reply_data_; |
| 76 | }; |
| 77 | |
| 78 | // static |
| 79 | const int EapListenerTest::kInterfaceIndex = 123; |
| 80 | const int EapListenerTest::kSocketFD = 456; |
| 81 | const uint8 EapListenerTest::kEapPacketPayload[] = { |
| 82 | eap_protocol::kIeee8021xEapolVersion2, |
| 83 | eap_protocol::kIIeee8021xTypeEapPacket, |
| 84 | 0x00, 0x00, // Payload length (should be 5, but unparsed by EapListener). |
| 85 | eap_protocol::kEapCodeRequest, |
| 86 | 0x00, // Identifier (unparsed). |
| 87 | 0x00, 0x00, // Packet length (should be 5, but unparsed by EapListener). |
| 88 | 0x01 // Request type: Identity (not parsed by EapListener). |
| 89 | }; |
| 90 | |
| 91 | ssize_t EapListenerTest::SimulateRecvFrom(int sockfd, void *buf, size_t len, |
| 92 | int flags, struct sockaddr *src_addr, |
| 93 | socklen_t *addrlen) { |
| 94 | // Mimic behavior of the real recvfrom -- copy no more than requested. |
| 95 | int copy_length = std::min(recvfrom_reply_data_.GetLength(), len); |
| 96 | memcpy(buf, recvfrom_reply_data_.GetConstData(), copy_length); |
| 97 | return copy_length; |
| 98 | } |
| 99 | |
| 100 | MATCHER_P(IsEapLinkAddress, interface_index, "") { |
| 101 | const struct sockaddr_ll *socket_address = |
| 102 | reinterpret_cast<const struct sockaddr_ll *>(arg); |
| 103 | return socket_address->sll_family == AF_PACKET && |
| 104 | socket_address->sll_protocol == htons(ETH_P_PAE) && |
| 105 | socket_address->sll_ifindex == interface_index; |
| 106 | } |
| 107 | |
| 108 | void EapListenerTest::StartListenerWithFD(int fd) { |
| 109 | EXPECT_CALL(*sockets_, Socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE))) |
| 110 | .WillOnce(Return(fd)); |
| 111 | EXPECT_CALL(*sockets_, SetNonBlocking(fd)).WillOnce(Return(0)); |
| 112 | EXPECT_CALL(*sockets_, |
| 113 | Bind(fd, IsEapLinkAddress(kInterfaceIndex), sizeof(sockaddr_ll))) |
| 114 | .WillOnce(Return(0)); |
| 115 | EXPECT_CALL(dispatcher_, CreateReadyHandler(fd, IOHandler::kModeInput, _)); |
| 116 | EXPECT_TRUE(listener_.Start()); |
| 117 | EXPECT_EQ(fd, listener_.socket_); |
| 118 | } |
| 119 | |
| 120 | TEST_F(EapListenerTest, Constructor) { |
| 121 | EXPECT_EQ(kInterfaceIndex, GetInterfaceIndex()); |
| 122 | EXPECT_EQ(8, GetMaxEapPacketLength()); |
| 123 | EXPECT_EQ(-1, GetSocket()); |
| 124 | } |
| 125 | |
| 126 | TEST_F(EapListenerTest, SocketOpenFail) { |
| 127 | ScopedMockLog log; |
| 128 | EXPECT_CALL(log, |
| 129 | Log(logging::LOG_ERROR, _, |
| 130 | HasSubstr("Could not create EAP listener socket"))).Times(1); |
| 131 | |
| 132 | EXPECT_CALL(*sockets_, Socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE))) |
| 133 | .WillOnce(Return(-1)); |
| 134 | EXPECT_FALSE(CreateSocket()); |
| 135 | } |
| 136 | |
| 137 | TEST_F(EapListenerTest, SocketNonBlockingFail) { |
| 138 | ScopedMockLog log; |
| 139 | EXPECT_CALL(log, |
| 140 | Log(logging::LOG_ERROR, _, |
| 141 | HasSubstr("Could not set socket to be non-blocking"))).Times(1); |
| 142 | |
| 143 | EXPECT_CALL(*sockets_, Socket(_, _, _)).WillOnce(Return(kSocketFD)); |
| 144 | EXPECT_CALL(*sockets_, SetNonBlocking(kSocketFD)).WillOnce(Return(-1)); |
| 145 | EXPECT_FALSE(CreateSocket()); |
| 146 | } |
| 147 | |
| 148 | TEST_F(EapListenerTest, SocketBindFail) { |
| 149 | ScopedMockLog log; |
| 150 | EXPECT_CALL(log, |
| 151 | Log(logging::LOG_ERROR, _, |
| 152 | HasSubstr("Could not bind socket to interface"))).Times(1); |
| 153 | |
| 154 | EXPECT_CALL(*sockets_, Socket(_, _, _)).WillOnce(Return(kSocketFD)); |
| 155 | EXPECT_CALL(*sockets_, SetNonBlocking(kSocketFD)).WillOnce(Return(0)); |
| 156 | EXPECT_CALL(*sockets_, Bind(kSocketFD, _, _)).WillOnce(Return(-1)); |
| 157 | EXPECT_FALSE(CreateSocket()); |
| 158 | } |
| 159 | |
| 160 | TEST_F(EapListenerTest, StartSuccess) { |
| 161 | StartListener(); |
| 162 | } |
| 163 | |
| 164 | TEST_F(EapListenerTest, StartMultipleTimes) { |
| 165 | const int kFirstSocketFD = kSocketFD + 1; |
| 166 | StartListenerWithFD(kFirstSocketFD); |
| 167 | EXPECT_CALL(*sockets_, Close(kFirstSocketFD)); |
| 168 | StartListener(); |
| 169 | } |
| 170 | |
| 171 | TEST_F(EapListenerTest, Stop) { |
| 172 | StartListener(); |
| 173 | EXPECT_EQ(kSocketFD, GetSocket()); |
| 174 | EXPECT_CALL(*sockets_, Close(kSocketFD)); |
| 175 | listener_.Stop(); |
| 176 | EXPECT_EQ(-1, GetSocket()); |
| 177 | } |
| 178 | |
| 179 | |
| 180 | TEST_F(EapListenerTest, ReceiveFail) { |
| 181 | StartListener(); |
| 182 | EXPECT_CALL(*sockets_, |
| 183 | RecvFrom(kSocketFD, _, GetMaxEapPacketLength(), 0, _, _)) |
| 184 | .WillOnce(Return(-1)); |
| 185 | EXPECT_CALL(*this, ReceiveCallback()).Times(0); |
| 186 | EXPECT_CALL(*sockets_, Close(kSocketFD)); |
| 187 | |
| 188 | ScopedMockLog log; |
| 189 | // RecvFrom returns an error. |
| 190 | EXPECT_CALL(log, |
| 191 | Log(logging::LOG_ERROR, _, |
| 192 | HasSubstr("Socket recvfrom failed"))).Times(1); |
| 193 | ReceiveRequest(); |
| 194 | } |
| 195 | |
| 196 | TEST_F(EapListenerTest, ReceiveEmpty) { |
| 197 | StartListener(); |
| 198 | EXPECT_CALL(*sockets_, |
| 199 | RecvFrom(kSocketFD, _, GetMaxEapPacketLength(), 0, _, _)) |
| 200 | .WillOnce(Return(0)); |
| 201 | EXPECT_CALL(*this, ReceiveCallback()).Times(0); |
| 202 | ReceiveRequest(); |
| 203 | } |
| 204 | |
| 205 | TEST_F(EapListenerTest, ReceiveShort) { |
| 206 | StartListener(); |
| 207 | recvfrom_reply_data_ = ByteString(kEapPacketPayload, |
| 208 | GetMaxEapPacketLength() - 1); |
| 209 | EXPECT_CALL(*sockets_, |
| 210 | RecvFrom(kSocketFD, _, GetMaxEapPacketLength(), 0, _, _)) |
| 211 | .WillOnce(Invoke(this, &EapListenerTest::SimulateRecvFrom)); |
| 212 | EXPECT_CALL(*this, ReceiveCallback()).Times(0); |
| 213 | ScopedMockLog log; |
| 214 | EXPECT_CALL(log, |
| 215 | Log(logging::LOG_INFO, _, |
| 216 | HasSubstr("Short EAP packet received"))).Times(1); |
| 217 | ReceiveRequest(); |
| 218 | } |
| 219 | |
| 220 | TEST_F(EapListenerTest, ReceiveInvalid) { |
| 221 | StartListener(); |
| 222 | // We're partially initializing this field, just making sure at least one |
| 223 | // part of it is incorrect. |
| 224 | uint8 bad_payload[sizeof(kEapPacketPayload)] = { |
| 225 | eap_protocol::kIeee8021xEapolVersion2 - 1 |
| 226 | }; |
| 227 | recvfrom_reply_data_ = ByteString(bad_payload, sizeof(bad_payload)); |
| 228 | EXPECT_CALL(*sockets_, |
| 229 | RecvFrom(kSocketFD, _, GetMaxEapPacketLength(), 0, _, _)) |
| 230 | .WillOnce(Invoke(this, &EapListenerTest::SimulateRecvFrom)); |
| 231 | EXPECT_CALL(*this, ReceiveCallback()).Times(0); |
| 232 | ScopedMockLog log; |
| 233 | EXPECT_CALL(log, |
| 234 | Log(logging::LOG_INFO, _, |
| 235 | HasSubstr("Packet is not a valid EAP request"))).Times(1); |
| 236 | ReceiveRequest(); |
| 237 | } |
| 238 | |
| 239 | TEST_F(EapListenerTest, ReceiveSuccess) { |
| 240 | StartListener(); |
| 241 | recvfrom_reply_data_ = |
| 242 | ByteString(kEapPacketPayload, sizeof(kEapPacketPayload)); |
| 243 | EXPECT_CALL(*sockets_, |
| 244 | RecvFrom(kSocketFD, _, GetMaxEapPacketLength(), 0, _, _)) |
| 245 | .WillOnce(Invoke(this, &EapListenerTest::SimulateRecvFrom)); |
| 246 | EXPECT_CALL(*this, ReceiveCallback()).Times(1); |
| 247 | ReceiveRequest(); |
| 248 | } |
| 249 | |
| 250 | } // namespace shill |