diff options
Diffstat (limited to 'contrib/ipfilter/ipsd/sbpf.c')
| -rw-r--r-- | contrib/ipfilter/ipsd/sbpf.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/contrib/ipfilter/ipsd/sbpf.c b/contrib/ipfilter/ipsd/sbpf.c deleted file mode 100644 index 457891b..0000000 --- a/contrib/ipfilter/ipsd/sbpf.c +++ /dev/null @@ -1,208 +0,0 @@ -/* - * (C)opyright 1995-1998 Darren Reed. (from tcplog) - * - * See the IPFILTER.LICENCE file for details on licencing. - * - */ -#include <stdio.h> -#include <netdb.h> -#include <ctype.h> -#include <signal.h> -#include <errno.h> -#ifdef __NetBSD__ -# include <paths.h> -#endif -#include <sys/types.h> -#include <sys/param.h> -#include <sys/mbuf.h> -#include <sys/time.h> -#include <sys/timeb.h> -#include <sys/socket.h> -#include <sys/file.h> -#include <sys/ioctl.h> -#if BSD < 199103 -#include <sys/fcntlcom.h> -#endif -#include <sys/dir.h> -#include <net/bpf.h> - -#include <net/if.h> -#include <netinet/in.h> -#include <netinet/in_systm.h> -#include <netinet/ip.h> -#include <netinet/if_ether.h> -#include <netinet/ip_var.h> -#include <netinet/udp.h> -#include <netinet/udp_var.h> -#include <netinet/tcp.h> -#include <netinet/tcpip.h> -#include "ip_compat.h" - -#ifndef lint -static char sbpf[] = "@(#)sbpf.c 1.2 12/3/95 (C)1995 Darren Reed"; -#endif - -/* -(000) ldh [12] -(001) jeq #0x800 jt 2 jf 5 -(002) ldb [23] -(003) jeq #0x6 jt 4 jf 5 -(004) ret #68 -(005) ret #0 -*/ -struct bpf_insn filter[] = { -/* 0. */ { BPF_LD|BPF_H|BPF_ABS, 0, 0, 12 }, -/* 1. */ { BPF_JMP|BPF_JEQ, 0, 3, 0x0800 }, -/* 2. */ { BPF_LD|BPF_B|BPF_ABS, 0, 0, 23 }, -/* 3. */ { BPF_JMP|BPF_JEQ, 0, 1, 0x06 }, -/* 4. */ { BPF_RET, 0, 0, 68 }, -/* 5. */ { BPF_RET, 0, 0, 0 } -}; -/* - * the code herein is dervied from libpcap. - */ -static u_char *buf = NULL; -static u_int bufsize = 32768, timeout = 1; - - -int ack_recv(ep) -char *ep; -{ - struct tcpiphdr tip; - tcphdr_t *tcp; - ip_t *ip; - - ip = (ip_t *)&tip; - tcp = (tcphdr_t *)(ip + 1); - bcopy(ep + 14, (char *)ip, sizeof(*ip)); - bcopy(ep + 14 + (ip->ip_hl << 2), (char *)tcp, sizeof(*tcp)); - if (ip->ip_p != IPPROTO_TCP && ip->ip_p != IPPROTO_UDP) - return -1; - if (ip->ip_p & 0x1fff != 0) - return 0; - if (0 == detect(ip, tcp)) - return 1; - return 0; -} - - -int readloop(fd, port, dst) -int fd, port; -struct in_addr dst; -{ - register u_char *bp, *cp, *bufend; - register struct bpf_hdr *bh; - register int cc; - time_t in = time(NULL); - int done = 0; - - while ((cc = read(fd, buf, bufsize)) >= 0) { - if (!cc && (time(NULL) - in) > timeout) - return done; - bp = buf; - bufend = buf + cc; - /* - * loop through each snapshot in the chunk - */ - while (bp < bufend) { - bh = (struct bpf_hdr *)bp; - cp = bp + bh->bh_hdrlen; - done += ack_recv(cp); - bp += BPF_WORDALIGN(bh->bh_caplen + bh->bh_hdrlen); - } - return done; - } - perror("read"); - exit(-1); -} - -int initdevice(device, tout) -char *device; -int tout; -{ - struct bpf_program prog; - struct bpf_version bv; - struct timeval to; - struct ifreq ifr; -#ifdef _PATH_BPF - char *bpfname = _PATH_BPF; - int fd; - - if ((fd = open(bpfname, O_RDWR)) < 0) - { - fprintf(stderr, "no bpf devices available as /dev/bpfxx\n"); - return -1; - } -#else - char bpfname[16]; - int fd = -1, i; - - for (i = 0; i < 16; i++) - { - (void) sprintf(bpfname, "/dev/bpf%d", i); - if ((fd = open(bpfname, O_RDWR)) >= 0) - break; - } - if (i == 16) - { - fprintf(stderr, "no bpf devices available as /dev/bpfxx\n"); - return -1; - } -#endif - - if (ioctl(fd, BIOCVERSION, (caddr_t)&bv) < 0) - { - perror("BIOCVERSION"); - return -1; - } - if (bv.bv_major != BPF_MAJOR_VERSION || - bv.bv_minor < BPF_MINOR_VERSION) - { - fprintf(stderr, "kernel bpf (v%d.%d) filter out of date:\n", - bv.bv_major, bv.bv_minor); - fprintf(stderr, "current version: %d.%d\n", - BPF_MAJOR_VERSION, BPF_MINOR_VERSION); - return -1; - } - - (void) strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name)); - if (ioctl(fd, BIOCSETIF, &ifr) == -1) - { - fprintf(stderr, "%s(%d):", ifr.ifr_name, fd); - perror("BIOCSETIF"); - exit(1); - } - /* - * set the timeout - */ - timeout = tout; - to.tv_sec = 1; - to.tv_usec = 0; - if (ioctl(fd, BIOCSRTIMEOUT, (caddr_t)&to) == -1) - { - perror("BIOCSRTIMEOUT"); - exit(-1); - } - /* - * get kernel buffer size - */ - if (ioctl(fd, BIOCSBLEN, &bufsize) == -1) - perror("BIOCSBLEN"); - if (ioctl(fd, BIOCGBLEN, &bufsize) == -1) - { - perror("BIOCGBLEN"); - exit(-1); - } - printf("BPF buffer size: %d\n", bufsize); - buf = (u_char*)malloc(bufsize); - - prog.bf_len = sizeof(filter) / sizeof(struct bpf_insn); - prog.bf_insns = filter; - if (ioctl(fd, BIOCSETF, (caddr_t)&prog) == -1) - { - perror("BIOCSETF"); - exit(-1); - } - (void) ioctl(fd, BIOCFLUSH, 0); - return fd; -} |
