1 /* 2 * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <config.h> 35 36 #include "roken.h" 37 38 #ifndef _WIN32 39 40 ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL 41 sendmsg(rk_socket_t s, const struct msghdr *msg, int flags) 42 { 43 ssize_t ret; 44 size_t tot = 0; 45 int i; 46 char *buf, *p; 47 struct iovec *iov = msg->msg_iov; 48 49 for(i = 0; i < msg->msg_iovlen; ++i) 50 tot += iov[i].iov_len; 51 buf = malloc(tot); 52 if (tot != 0 && buf == NULL) { 53 errno = ENOMEM; 54 return -1; 55 } 56 p = buf; 57 for (i = 0; i < msg->msg_iovlen; ++i) { 58 memcpy (p, iov[i].iov_base, iov[i].iov_len); 59 p += iov[i].iov_len; 60 } 61 ret = sendto (s, buf, tot, flags, msg->msg_name, msg->msg_namelen); 62 free (buf); 63 return ret; 64 } 65 66 #else /* _WIN32 */ 67 68 /*********************************************************************** 69 * Copyright (c) 2009, Secure Endpoints Inc. 70 * All rights reserved. 71 * 72 * Redistribution and use in source and binary forms, with or without 73 * modification, are permitted provided that the following conditions 74 * are met: 75 * 76 * - Redistributions of source code must retain the above copyright 77 * notice, this list of conditions and the following disclaimer. 78 * 79 * - Redistributions in binary form must reproduce the above copyright 80 * notice, this list of conditions and the following disclaimer in 81 * the documentation and/or other materials provided with the 82 * distribution. 83 * 84 * - Neither the name of Secure Endpoints Inc. nor the names of its 85 * contributors may be used to endorse or promote products derived 86 * from this software without specific prior written permission. 87 * 88 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 89 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 90 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 91 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 92 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 93 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 94 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 95 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 96 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 97 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 98 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 99 * OF THE POSSIBILITY OF SUCH DAMAGE. 100 * 101 **********************************************************************/ 102 103 /** 104 * Implementation of sendmsg() for WIN32 105 * 106 * We are using a contrived definition of msghdr which actually uses 107 * an array of ::_WSABUF structures instead of ::iovec . This allows 108 * us to call WSASend directly using the given ::msghdr instead of 109 * having to allocate another array of ::_WSABUF and copying data for 110 * each call. 111 * 112 * Limitations: 113 * 114 * - msg->msg_name is ignored. So is msg->control. 115 * - WSASend() only supports ::MSG_DONTROUTE, ::MSG_OOB and 116 * ::MSG_PARTIAL. 117 * 118 * @param[in] s The socket to use. 119 * @param[in] msg The message 120 * @param[in] flags Flags. A combination of ::MSG_DONTROUTE, 121 * ::MSG_OOB and ::MSG_PARTIAL 122 * 123 * @return The number of bytes sent, on success. Or -1 on error. 124 */ 125 ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL 126 sendmsg_w32(rk_socket_t s, const struct msghdr * msg, int flags) 127 { 128 int srv; 129 DWORD num_bytes_sent = 0; 130 131 /* TODO: For _WIN32_WINNT >= 0x0600 we can use WSASendMsg using 132 WSAMSG which is a much more direct analogue to sendmsg(). */ 133 134 srv = WSASend(s, msg->msg_iov, msg->msg_iovlen, 135 &num_bytes_sent, flags, NULL, NULL); 136 137 if (srv == 0) 138 return (int) num_bytes_sent; 139 140 /* srv == SOCKET_ERROR and WSAGetLastError() == WSA_IO_PENDING 141 indicates that a non-blocking transfer has been scheduled. 142 We'll have to check for that if we ever support non-blocking 143 I/O. */ 144 145 return -1; 146 } 147 148 #endif /* !_WIN32 */ 149