149 lines
5.4 KiB
C
149 lines
5.4 KiB
C
/*
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* Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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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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*
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* 1. 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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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT 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 <config.h>
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#include "roken.h"
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#ifndef _WIN32
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ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
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sendmsg(rk_socket_t s, const struct msghdr *msg, int flags)
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{
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ssize_t ret;
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size_t tot = 0;
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int i;
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char *buf, *p;
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struct iovec *iov = msg->msg_iov;
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for(i = 0; i < msg->msg_iovlen; ++i)
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tot += iov[i].iov_len;
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buf = malloc(tot);
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if (tot != 0 && buf == NULL) {
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errno = ENOMEM;
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return -1;
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}
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p = buf;
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for (i = 0; i < msg->msg_iovlen; ++i) {
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memcpy (p, iov[i].iov_base, iov[i].iov_len);
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p += iov[i].iov_len;
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}
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ret = sendto (s, buf, tot, flags, msg->msg_name, msg->msg_namelen);
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free (buf);
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return ret;
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}
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#else /* _WIN32 */
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/***********************************************************************
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* Copyright (c) 2009, Secure Endpoints Inc.
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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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*
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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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*
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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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* - Neither the name of Secure Endpoints Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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 HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**********************************************************************/
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/**
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* Implementation of sendmsg() for WIN32
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*
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* We are using a contrived definition of msghdr which actually uses
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* an array of ::_WSABUF structures instead of ::iovec . This allows
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* us to call WSASend directly using the given ::msghdr instead of
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* having to allocate another array of ::_WSABUF and copying data for
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* each call.
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*
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* Limitations:
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*
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* - msg->msg_name is ignored. So is msg->control.
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* - WSASend() only supports ::MSG_DONTROUTE, ::MSG_OOB and
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* ::MSG_PARTIAL.
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*
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* @param[in] s The socket to use.
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* @param[in] msg The message
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* @param[in] flags Flags. A combination of ::MSG_DONTROUTE,
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* ::MSG_OOB and ::MSG_PARTIAL
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*
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* @return The number of bytes sent, on success. Or -1 on error.
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*/
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ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
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sendmsg_w32(rk_socket_t s, const struct msghdr * msg, int flags)
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{
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int srv;
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DWORD num_bytes_sent = 0;
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/* TODO: For _WIN32_WINNT >= 0x0600 we can use WSASendMsg using
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WSAMSG which is a much more direct analogue to sendmsg(). */
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srv = WSASend(s, msg->msg_iov, msg->msg_iovlen,
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&num_bytes_sent, flags, NULL, NULL);
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if (srv == 0)
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return (int) num_bytes_sent;
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/* srv == SOCKET_ERROR and WSAGetLastError() == WSA_IO_PENDING
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indicates that a non-blocking transfer has been scheduled.
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We'll have to check for that if we ever support non-blocking
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I/O. */
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return -1;
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}
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#endif /* !_WIN32 */
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