diff options
Diffstat (limited to 'package/etrax-tools/src/e100boot/libpcap-0.4/pcap-snoop.c')
| -rw-r--r-- | package/etrax-tools/src/e100boot/libpcap-0.4/pcap-snoop.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/package/etrax-tools/src/e100boot/libpcap-0.4/pcap-snoop.c b/package/etrax-tools/src/e100boot/libpcap-0.4/pcap-snoop.c new file mode 100644 index 000000000..075d9fa4b --- /dev/null +++ b/package/etrax-tools/src/e100boot/libpcap-0.4/pcap-snoop.c @@ -0,0 +1,216 @@ +/* + * 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); +} |