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