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/time.h>
29 #include <unistd.h>
30 #ifdef CONSCRYPT_UNBUNDLED
31 #include <dlfcn.h>
32 #endif // CONSCRYPT_UNBUNDLED
33 #endif // !_WIN32
34
35 namespace conscrypt {
36 namespace netutil {
37
38 /**
39 * Copied from libnativehelper NetworkUtilites.cpp
40 */
setBlocking(int fd,bool blocking)41 bool setBlocking(int fd, bool blocking) {
42 #ifdef _WIN32
43 unsigned long flag = blocking ? 0UL : 1UL; // NOLINT(runtime/int)
44 int res = ioctlsocket(fd, FIONBIO, &flag);
45 if (res != NO_ERROR) {
46 JNI_TRACE("ioctlsocket %d failed with error: %d", fd, WSAGetLastError());
47 }
48 return res == NO_ERROR;
49 #else
50 int flags = fcntl(fd, F_GETFL);
51 if (flags == -1) {
52 return false;
53 }
54
55 if (!blocking) {
56 flags |= O_NONBLOCK;
57 } else {
58 flags &= ~O_NONBLOCK;
59 }
60
61 return fcntl(fd, F_SETFL, flags) != -1;
62 #endif
63 }
64
65 } // namespace netutil
66 } // namespace conscrypt
67