1 /*
2 * Copyright 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "polled_socket"
18
19 #include "polled_socket.h"
20
21 #include <base/logging.h>
22 #include <fcntl.h>
23 #include <netdb.h>
24 #include <netinet/in.h>
25 #include <sys/socket.h>
26 #include <sys/types.h>
27 #include <sys/uio.h>
28
29 #include "osi/include/log.h"
30
31 namespace test_vendor_lib {
32 namespace net {
33
PolledSocket(int file_descriptor)34 PolledSocket::PolledSocket(int file_descriptor) : file_descriptor_(file_descriptor) {}
35
PolledSocket(PolledSocket && p)36 PolledSocket::PolledSocket(PolledSocket&& p) : file_descriptor_(p.file_descriptor_) {
37 p.file_descriptor_ = -1;
38 }
39
~PolledSocket()40 PolledSocket::~PolledSocket() {
41 CleanUp();
42 }
43
CleanUp()44 void PolledSocket::CleanUp() {
45 if (file_descriptor_ != -1) {
46 WHILE_EINTR(close(file_descriptor_));
47 }
48 file_descriptor_ = -1;
49 }
50
TrySend(packets::PacketView<true> packet)51 size_t PolledSocket::TrySend(packets::PacketView<true> packet) {
52 if (file_descriptor_ == -1) {
53 return 0;
54 }
55 // Could skip this copy if the packet is guaranteed to be contiguous.
56 std::vector<uint8_t> copy;
57 copy.reserve(packet.size());
58 for (const auto&& c : packet) {
59 copy.push_back(c);
60 }
61 int ret = write(file_descriptor_, copy.data(), copy.size());
62 if (ret == -1) {
63 ALOGW("%s error %s", __func__, strerror(errno));
64 return 0;
65 } else {
66 return static_cast<size_t>(ret);
67 }
68 }
69
70 /*
71 void PolledSocket::TrySendVector(
72 const std::vector<std::vector<uint8_t>&>& raw_vectors) {
73 if (file_descriptor_ < 0) {
74 return;
75 }
76 for (const std::vector<uint8_t>& v : raw_vectors) {
77 Send(v);
78 }
79 std::vector<struct iovec> iovecs;
80 for (auto v : raw_vectors) {
81 struct iovec one_iovec;
82 one_iovec.iov_base = v.data();
83 one_iovec.iov_base = v.size();
84 iovecs.push_back(one_iovec);
85 }
86 int ret = writev(file_descriptor_, iovecs.data(), iovecs.size());
87 if (ret == -1) {
88 return 0;
89 } else {
90 return static_cast<size_t>(ret);
91 }
92 }
93 */
94
TryReceive(size_t num_bytes,uint8_t * data)95 size_t PolledSocket::TryReceive(size_t num_bytes, uint8_t* data) {
96 if (file_descriptor_ == -1) return 0;
97 int ret;
98 WHILE_EINTR(ret = read(file_descriptor_, data, num_bytes));
99 if (ret < 0) {
100 if (errno == EAGAIN) {
101 return 0;
102 } else {
103 ALOGW("%s error %s", __func__, strerror(errno));
104 CleanUp();
105 return 0;
106 }
107 }
108 return ret;
109 }
110
111 } // namespace net
112 } // namespace test_vendor_lib
113