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- /*
- * $Id: socket.c,v 1.1.1.1 1999/05/18 15:33:42 dugsong Exp $
- *
- * libnet
- * socket.c - opens a raw socket of type `prot` and sets the IP_HDRINCL
- * socket option
- *
- * Copyright (c) 1998, 1999 Mike D. Schiffman <mike@infonexus.com>
- * route|daemon9 <route@infonexus.com>
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- *
- */
-
- #if (HAVE_CONFIG_H)
- #include "../include/config.h"
- #endif
- #include "../include/libnet.h"
-
- int
- open_raw_sock(prot)
- {
- int fd;
- int one = 1;
- #if (__svr4__)
- void *oneptr = &one;
- #else
- int *oneptr = &one;
- #endif /* __svr4__ */
-
- fd = socket(AF_INET, SOCK_RAW, prot);
- if (fd == -1)
- {
- #if (__DEBUG)
- fprintf(stderr, "open_raw_sock: SOCK_RAW allocation: %s\n",
- strerror(errno));
- #endif
- return (-1);
- }
- if (setsockopt(fd, IPPROTO_IP, IP_HDRINCL, oneptr, sizeof(one)) == -1)
- {
- #if (__DEBUG)
- fprintf(stderr, "open_raw_sock: setting IP_HDRINCL: %s\n",
- strerror(errno));
- #endif
- return (-1);
- }
- return (fd);
- }
-
-
- int
- close_raw_sock(int fd)
- {
- return (close(fd));
- }
- /* EOF */
-