2 * (C)opyright 1995-1997 Darren Reed. (from tcplog)
4 * Redistribution and use in source and binary forms are permitted
5 * provided that this notice is preserved and due credit is given
6 * to the original author and the contributors.
16 #include <sys/types.h>
17 #include <sys/param.h>
20 #include <sys/timeb.h>
21 #include <sys/socket.h>
23 #include <sys/ioctl.h>
25 #include <sys/fcntlcom.h>
31 #include <netinet/in.h>
32 #include <netinet/in_systm.h>
33 #include <netinet/ip.h>
34 #include <netinet/ip_var.h>
35 #include <netinet/udp.h>
36 #include <netinet/udp_var.h>
37 #include <netinet/tcp.h>
41 static const char sccsid[] = "@(#)sbpf.c 1.3 8/25/95 (C)1995 Darren Reed";
42 static const char rcsid[] = "@(#)$Id: sbpf.c,v 2.0.2.7 1997/10/23 11:42:47 darrenr Exp $";
46 * the code herein is dervied from libpcap.
48 static u_char *buf = NULL;
49 static int bufsize = 0, timeout = 1;
52 int initdevice(device, sport, tout)
56 struct bpf_version bv;
62 for (i = 0; i < 16; i++)
64 (void) sprintf(bpfname, "/dev/bpf%d", i);
65 if ((fd = open(bpfname, O_RDWR)) >= 0)
70 fprintf(stderr, "no bpf devices available as /dev/bpfxx\n");
74 if (ioctl(fd, BIOCVERSION, (caddr_t)&bv) < 0)
76 perror("BIOCVERSION");
79 if (bv.bv_major != BPF_MAJOR_VERSION ||
80 bv.bv_minor < BPF_MINOR_VERSION)
82 fprintf(stderr, "kernel bpf (v%d.%d) filter out of date:\n",
83 bv.bv_major, bv.bv_minor);
84 fprintf(stderr, "current version: %d.%d\n",
85 BPF_MAJOR_VERSION, BPF_MINOR_VERSION);
89 (void) strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
90 if (ioctl(fd, BIOCSETIF, &ifr) == -1)
92 fprintf(stderr, "%s(%d):", ifr.ifr_name, fd);
97 * get kernel buffer size
99 if (ioctl(fd, BIOCGBLEN, &bufsize) == -1)
104 buf = (u_char*)malloc(bufsize);
111 if (ioctl(fd, BIOCSRTIMEOUT, (caddr_t)&to) == -1)
113 perror("BIOCSRTIMEOUT");
117 (void) ioctl(fd, BIOCFLUSH, 0);
123 * output an IP packet onto a fd opened for /dev/bpf
125 int sendip(fd, pkt, len)
129 if (write(fd, pkt, len) == -1)