efeb8bffe3
Convert ipfilter userland function declarations from K&R to ANSI. This syncs our function declarations with NetBSD hg commit 75edcd7552a0 (apply our changes). Though not copied from NetBSD, this change was partially inspired by NetBSD's work and inspired by style(9). Reviewed by: glebius (for #network) MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D33595
161 lines
3.1 KiB
C
161 lines
3.1 KiB
C
/* $FreeBSD$ */
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/*
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* (C)opyright 1992-1998 Darren Reed. (from tcplog)
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*
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*/
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#include <stdio.h>
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#include <netdb.h>
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#include <ctype.h>
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#include <signal.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/timeb.h>
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#include <sys/socket.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <net/nit.h>
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#include <sys/fcntlcom.h>
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#include <sys/dir.h>
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#include <net/nit_if.h>
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#include <net/nit_pf.h>
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#include <net/nit_buf.h>
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#include <net/packetfilt.h>
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#include <sys/stropts.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/if_ether.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <netinet/tcp.h>
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#include "ipsend.h"
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#if !defined(lint)
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static const char sccsid[] = "@(#)snit.c 1.5 1/11/96 (C)1995 Darren Reed";
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static const char rcsid[] = "@(#)$Id$";
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#endif
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#define CHUNKSIZE 8192
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#define BUFSPACE (4*CHUNKSIZE)
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/*
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* Be careful to only include those defined in the flags option for the
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* interface are included in the header size.
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*/
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#define BUFHDR_SIZE (sizeof(struct nit_bufhdr))
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#define NIT_HDRSIZE (BUFHDR_SIZE)
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static int timeout;
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int
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initdevice(char *device, int tout)
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{
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struct strioctl si;
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struct timeval to;
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struct ifreq ifr;
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int fd;
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if ((fd = open("/dev/nit", O_RDWR)) < 0)
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{
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perror("/dev/nit");
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exit(-1);
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}
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/*
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* arrange to get messages from the NIT STREAM and use NIT_BUF option
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*/
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ioctl(fd, I_SRDOPT, (char*)RMSGD);
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ioctl(fd, I_PUSH, "nbuf");
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/*
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* set the timeout
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*/
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timeout = tout;
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si.ic_timout = 1;
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to.tv_sec = 1;
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to.tv_usec = 0;
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si.ic_cmd = NIOCSTIME;
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si.ic_len = sizeof(to);
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si.ic_dp = (char*)&to;
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if (ioctl(fd, I_STR, (char*)&si) == -1)
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{
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perror("ioctl: NIT timeout");
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exit(-1);
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}
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/*
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* request the interface
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*/
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strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
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ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = ' ';
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si.ic_cmd = NIOCBIND;
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si.ic_len = sizeof(ifr);
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si.ic_dp = (char*)𝔦
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if (ioctl(fd, I_STR, (char*)&si) == -1)
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{
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perror(ifr.ifr_name);
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exit(1);
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}
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return fd;
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}
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/*
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* output an IP packet onto a fd opened for /dev/nit
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*/
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int
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sendip(int fd, char *pkt, int len)
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int fd, len;
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char *pkt;
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{
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struct sockaddr sk, *sa = &sk;
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struct strbuf cbuf, *cp = &cbuf, dbuf, *dp = &dbuf;
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/*
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* For ethernet, need at least 802.3 header and IP header.
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*/
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if (len < (sizeof(sa->sa_data) + sizeof(struct ip)))
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return -1;
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/*
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* to avoid any output processing for IP, say we're not.
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*/
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sa->sa_family = AF_UNSPEC;
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bcopy(pkt, sa->sa_data, sizeof(sa->sa_data));
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pkt += sizeof(sa->sa_data);
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len -= sizeof(sa->sa_data);
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/*
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* construct NIT STREAMS messages, first control then data.
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*/
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cp->len = sizeof(*sa);
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cp->maxlen = sizeof(*sa);
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cp->buf = (char *)sa;
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dp->buf = pkt;
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dp->len = len;
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dp->maxlen = dp->len;
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if (putmsg(fd, cp, dp, 0) == -1)
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{
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perror("putmsg");
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return -1;
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}
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if (ioctl(fd, I_FLUSH, FLUSHW) == -1)
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{
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perror("I_FLUSH");
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return -1;
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}
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return len;
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}
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