91 lines
3.6 KiB
C++
91 lines
3.6 KiB
C++
/*
|
|
* Copyright (C) 2015 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <cutils/sockets.h>
|
|
|
|
// https://msdn.microsoft.com/en-us/library/windows/desktop/ms741549(v=vs.85).aspx
|
|
// claims WSACleanup() should be called before program exit, but general
|
|
// consensus seems to be that it hasn't actually been necessary for a long time,
|
|
// likely since Windows 3.1. Additionally, trying to properly use WSACleanup()
|
|
// can be extremely tricky and cause deadlock when using threads or atexit().
|
|
//
|
|
// Both adb (1) and Chrome (2) purposefully avoid WSACleanup() with no issues.
|
|
// (1) https://android.googlesource.com/platform/system/core.git/+/master/adb/sysdeps_win32.cpp
|
|
// (2) https://code.google.com/p/chromium/codesearch#chromium/src/net/base/winsock_init.cc
|
|
extern "C" bool initialize_windows_sockets() {
|
|
// There's no harm in calling WSAStartup() multiple times but no benefit
|
|
// either, we may as well skip it after the first.
|
|
static bool init_success = false;
|
|
|
|
if (!init_success) {
|
|
WSADATA wsaData;
|
|
init_success = (WSAStartup(MAKEWORD(2, 2), &wsaData) == 0);
|
|
}
|
|
|
|
return init_success;
|
|
}
|
|
|
|
int socket_close(cutils_socket_t sock) {
|
|
return closesocket(sock);
|
|
}
|
|
|
|
int socket_set_receive_timeout(cutils_socket_t sock, int timeout_ms) {
|
|
return setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO,
|
|
reinterpret_cast<char*>(&timeout_ms), sizeof(timeout_ms));
|
|
}
|
|
|
|
ssize_t socket_send_buffers(cutils_socket_t sock,
|
|
const cutils_socket_buffer_t* buffers,
|
|
size_t num_buffers) {
|
|
if (num_buffers > SOCKET_SEND_BUFFERS_MAX_BUFFERS) {
|
|
return -1;
|
|
}
|
|
|
|
WSABUF wsa_buffers[SOCKET_SEND_BUFFERS_MAX_BUFFERS];
|
|
for (size_t i = 0; i < num_buffers; ++i) {
|
|
// It's safe to cast away const here; WSABUF declares non-const
|
|
// void* because it's used for both send and receive, but since
|
|
// we're only sending, the data won't be modified.
|
|
wsa_buffers[i].buf =
|
|
reinterpret_cast<char*>(const_cast<void*>(buffers[i].data));
|
|
wsa_buffers[i].len = buffers[i].length;
|
|
}
|
|
|
|
DWORD bytes_sent = 0;
|
|
if (WSASend(sock, wsa_buffers, num_buffers, &bytes_sent, 0, nullptr,
|
|
nullptr) != SOCKET_ERROR) {
|
|
return bytes_sent;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int android_get_control_socket(const char* name) {
|
|
return -1;
|
|
}
|