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/*
* Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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 <config.h>
#include "roken.h"
#ifndef _WIN32
ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
sendmsg(rk_socket_t s, const struct msghdr *msg, int flags)
{
ssize_t ret;
size_t tot = 0;
int i;
char *buf, *p;
struct iovec *iov = msg->msg_iov;
for(i = 0; i < msg->msg_iovlen; ++i)
tot += iov[i].iov_len;
buf = malloc(tot);
if (tot != 0 && buf == NULL) {
errno = ENOMEM;
return -1;
}
p = buf;
for (i = 0; i < msg->msg_iovlen; ++i) {
memcpy (p, iov[i].iov_base, iov[i].iov_len);
p += iov[i].iov_len;
}
ret = sendto (s, buf, tot, flags, msg->msg_name, msg->msg_namelen);
free (buf);
return ret;
}
#else /* _WIN32 */
/***********************************************************************
* Copyright (c) 2009, Secure Endpoints Inc.
* 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.
*
* - Neither the name of Secure Endpoints Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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 HOLDER 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.
*
**********************************************************************/
/**
* Implementation of sendmsg() for WIN32
*
* We are using a contrived definition of msghdr which actually uses
* an array of ::_WSABUF structures instead of ::iovec . This allows
* us to call WSASend directly using the given ::msghdr instead of
* having to allocate another array of ::_WSABUF and copying data for
* each call.
*
* Limitations:
*
* - msg->msg_name is ignored. So is msg->control.
* - WSASend() only supports ::MSG_DONTROUTE, ::MSG_OOB and
* ::MSG_PARTIAL.
*
* @param[in] s The socket to use.
* @param[in] msg The message
* @param[in] flags Flags. A combination of ::MSG_DONTROUTE,
* ::MSG_OOB and ::MSG_PARTIAL
*
* @return The number of bytes sent, on success. Or -1 on error.
*/
ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
sendmsg_w32(rk_socket_t s, const struct msghdr * msg, int flags)
{
int srv;
DWORD num_bytes_sent = 0;
/* TODO: For _WIN32_WINNT >= 0x0600 we can use WSASendMsg using
WSAMSG which is a much more direct analogue to sendmsg(). */
srv = WSASend(s, msg->msg_iov, msg->msg_iovlen,
&num_bytes_sent, flags, NULL, NULL);
if (srv == 0)
return (int) num_bytes_sent;
/* srv == SOCKET_ERROR and WSAGetLastError() == WSA_IO_PENDING
indicates that a non-blocking transfer has been scheduled.
We'll have to check for that if we ever support non-blocking
I/O. */
return -1;
}
#endif /* !_WIN32 */
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