+++ /dev/null
-/*
- * Copyright (c) 1993, 1994, 1995, 1996, 1997
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that: (1) source code distributions
- * retain the above copyright notice and this paragraph in its entirety, (2)
- * distributions including binary code include the above copyright notice and
- * this paragraph in its entirety in the documentation or other materials
- * provided with the distribution, and (3) all advertising materials mentioning
- * features or use of this software display the following acknowledgement:
- * ``This product includes software developed by the University of California,
- * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
- * the University nor the names of its contributors may be used to endorse
- * or promote products derived from this software without specific prior
- * written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-#ifndef lint
-static const char rcsid[] =
- "@(#) $Header: /usr/local/cvs/linux/tools/build/e100boot/libpcap-0.4/pcap-snoop.c,v 1.1 1999/08/26 10:05:26 johana Exp $ (LBL)";
-#endif
-
-#include <sys/param.h>
-#include <sys/file.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-
-#include <net/raw.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 <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "pcap-int.h"
-
-#include "gnuc.h"
-#ifdef HAVE_OS_PROTO_H
-#include "os-proto.h"
-#endif
-
-int
-pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
-{
- int cc;
- register struct snoopheader *sh;
- register int datalen;
- register int caplen;
- register u_char *cp;
-
-again:
- cc = read(p->fd, (char *)p->buffer, p->bufsize);
- if (cc < 0) {
- /* Don't choke when we get ptraced */
- switch (errno) {
-
- case EINTR:
- goto again;
-
- case EWOULDBLOCK:
- return (0); /* XXX */
- }
- sprintf(p->errbuf, "read: %s", pcap_strerror(errno));
- return (-1);
- }
- sh = (struct snoopheader *)p->buffer;
- datalen = sh->snoop_packetlen;
- caplen = (datalen < p->snapshot) ? datalen : p->snapshot;
- cp = (u_char *)(sh + 1) + p->offset; /* XXX */
-
- if (p->fcode.bf_insns == NULL ||
- bpf_filter(p->fcode.bf_insns, cp, datalen, caplen)) {
- struct pcap_pkthdr h;
- ++p->md.stat.ps_recv;
- h.ts = sh->snoop_timestamp;
- h.len = datalen;
- h.caplen = caplen;
- (*callback)(user, &h, cp);
- return (1);
- }
- return (0);
-}
-
-int
-pcap_stats(pcap_t *p, struct pcap_stat *ps)
-{
- register struct rawstats *rs;
- struct rawstats rawstats;
-
- rs = &rawstats;
- bzero((char *)rs, sizeof(*rs));
- if (ioctl(p->fd, SIOCRAWSTATS, (char *)rs) < 0) {
- sprintf(p->errbuf, "SIOCRAWSTATS: %s", pcap_strerror(errno));
- return (-1);
- }
-
- p->md.stat.ps_drop =
- rs->rs_snoop.ss_ifdrops + rs->rs_snoop.ss_sbdrops +
- rs->rs_drain.ds_ifdrops + rs->rs_drain.ds_sbdrops;
-
- *ps = p->md.stat;
- return (0);
-}
-
-/* XXX can't disable promiscuous */
-pcap_t *
-pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
-{
- int fd;
- struct sockaddr_raw sr;
- struct snoopfilter sf;
- u_int v;
- pcap_t *p;
-
- p = (pcap_t *)malloc(sizeof(*p));
- if (p == NULL) {
- sprintf(ebuf, "malloc: %s", pcap_strerror(errno));
- return (NULL);
- }
- bzero((char *)p, sizeof(*p));
- fd = socket(PF_RAW, SOCK_RAW, RAWPROTO_SNOOP);
- if (fd < 0) {
- sprintf(ebuf, "snoop socket: %s", pcap_strerror(errno));
- goto bad;
- }
- p->fd = fd;
- bzero((char *)&sr, sizeof(sr));
- sr.sr_family = AF_RAW;
- (void)strncpy(sr.sr_ifname, device, sizeof(sr.sr_ifname));
- if (bind(fd, (struct sockaddr *)&sr, sizeof(sr))) {
- sprintf(ebuf, "snoop bind: %s", pcap_strerror(errno));
- goto bad;
- }
- bzero((char *)&sf, sizeof(sf));
- if (ioctl(fd, SIOCADDSNOOP, &sf) < 0) {
- sprintf(ebuf, "SIOCADDSNOOP: %s", pcap_strerror(errno));
- goto bad;
- }
- v = 64 * 1024;
- (void)setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char *)&v, sizeof(v));
- if (ioctl(fd, SIOCSNOOPLEN, &snaplen) < 0) {
- sprintf(ebuf, "SIOCSNOOPLEN: %s", pcap_strerror(errno));
- goto bad;
- }
- p->snapshot = snaplen;
- v = 1;
- if (ioctl(fd, SIOCSNOOPING, &v) < 0) {
- sprintf(ebuf, "SIOCSNOOPING: %s", pcap_strerror(errno));
- goto bad;
- }
- /*
- * XXX hack - map device name to link layer type
- */
- if (strncmp("et", device, 2) == 0 || /* Challenge 10 Mbit */
- strncmp("ec", device, 2) == 0 || /* Indigo/Indy 10 Mbit,
- O2 10/100 */
- strncmp("ef", device, 2) == 0 || /* O200/2000 10/100 Mbit */
- strncmp("gfe", device, 3) == 0 || /* GIO 100 Mbit */
- strncmp("fxp", device, 3) == 0 || /* Challenge VME Enet */
- strncmp("ep", device, 2) == 0 || /* Challenge 8x10 Mbit EPLEX */
- strncmp("vfe", device, 3) == 0 || /* Challenge VME 100Mbit */
- strncmp("fa", device, 2) == 0 ||
- strncmp("qaa", device, 3) == 0) {
- p->linktype = DLT_EN10MB;
- p->offset = RAW_HDRPAD(sizeof(struct ether_header));
- } else if (strncmp("ipg", device, 3) == 0 ||
- strncmp("rns", device, 3) == 0 || /* O2/200/2000 FDDI */
- strncmp("xpi", device, 3) == 0) {
- p->linktype = DLT_FDDI;
- p->offset = 3; /* XXX yeah? */
- } else if (strncmp("ppp", device, 3) == 0) {
- p->linktype = DLT_RAW;
- } else if (strncmp("lo", device, 2) == 0) {
- p->linktype = DLT_NULL;
- } else {
- sprintf(ebuf, "snoop: unknown physical layer type");
- goto bad;
- }
-
- p->bufsize = 4096; /* XXX */
- p->buffer = (u_char *)malloc(p->bufsize);
- if (p->buffer == NULL) {
- sprintf(ebuf, "malloc: %s", pcap_strerror(errno));
- goto bad;
- }
-
- return (p);
- bad:
- (void)close(fd);
- free(p);
- return (NULL);
-}
-
-int
-pcap_setfilter(pcap_t *p, struct bpf_program *fp)
-{
-
- p->fcode = *fp;
- return (0);
-}
projects / openwrt / svn-archive / archive.git / blobdiff