/* $NetBSD: sockraw.c,v 1.1.1.1 2012/03/23 21:20:06 christos Exp $ */ /* * (C)opyright 2000 Darren Reed. * * See the IPFILTER.LICENCE file for details on licencing. * * WARNING: Attempting to use this .c file on HP-UX 11.00 will cause the * system to crash. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ipsend.h" #if !defined(lint) && defined(LIBC_SCCS) static char sirix[] = "@(#)sirix.c 1.0 10/9/97 (C)1997 Marc Boucher"; #endif int initdevice(char *device, int tout) { struct sockaddr s; struct ifreq ifr; int fd; memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, device, sizeof ifr.ifr_name); if ((fd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) { perror("socket(AF_INET, SOCK_RAW, IPPROTO_RAW)"); return -1; } if (ioctl(fd, SIOCGIFADDR, &ifr) == -1) { perror("ioctl SIOCGIFADDR"); return -1; } bzero((char *)&s, sizeof(s)); s.sa_family = AF_INET; bcopy(&ifr.ifr_addr, s.sa_data, 4); if (bind(fd, &s, sizeof(s)) == -1) perror("bind"); return fd; } /* * output an IP packet */ int sendip(int fd, char *pkt, int len) { struct ether_header *eh; struct sockaddr_in sin; eh = (struct ether_header *)pkt; bzero((char *)&sin, sizeof(sin)); sin.sin_family = AF_INET; pkt += 14; len -= 14; bcopy(pkt + 12, (char *)&sin.sin_addr, 4); if (sendto(fd, pkt, len, 0, &sin, sizeof(sin)) == -1) { perror("send"); return -1; } return len; }