1 /*
2 * Copyright (C) 2017 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 #include <conscrypt/netutil.h>
18 #include <conscrypt/trace.h>
19
20 #ifdef _WIN32
21 #pragma comment(lib, "ws2_32.lib")
22 #include <winsock2.h>
23 #else // !_WIN32
24 #include <arpa/inet.h>
25 #include <fcntl.h>
26 #include <poll.h>
27 #include <sys/socket.h>
28 #include <sys/syscall.h>
29 #include <sys/time.h>
30 #include <unistd.h>
31 #ifdef CONSCRYPT_UNBUNDLED
32 #include <dlfcn.h>
33 #endif // CONSCRYPT_UNBUNDLED
34 #endif // !_WIN32
35
36 namespace conscrypt {
37 namespace netutil {
38
39 /**
40 * Copied from libnativehelper NetworkUtilites.cpp
41 */
setBlocking(int fd,bool blocking)42 bool setBlocking(int fd, bool blocking) {
43 #ifdef _WIN32
44 unsigned long flag = blocking ? 0UL : 1UL; // NOLINT(runtime/int)
45 int res = ioctlsocket(fd, FIONBIO, &flag);
46 if (res != NO_ERROR) {
47 JNI_TRACE("ioctlsocket %d failed with error: %d", fd, WSAGetLastError());
48 }
49 return res == NO_ERROR;
50 #else
51 int flags = fcntl(fd, F_GETFL);
52 if (flags == -1) {
53 return false;
54 }
55
56 if (!blocking) {
57 flags |= O_NONBLOCK;
58 } else {
59 flags &= ~O_NONBLOCK;
60 }
61
62 return fcntl(fd, F_SETFL, flags) != -1;
63 #endif
64 }
65
66 } // namespace netutil
67 } // namespace conscrypt
68