1996-08-19 20:36:34 +00:00
|
|
|
/*
|
1998-09-15 19:28:10 +00:00
|
|
|
* Copyright (c) 1993, 1994, 1995, 1996, 1997
|
1996-08-19 20:36:34 +00:00
|
|
|
* 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
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|
|
* written permission.
|
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|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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|
|
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
|
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|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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|
|
|
*/
|
2001-04-03 04:18:09 +00:00
|
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
#include "config.h"
|
1996-08-19 20:36:34 +00:00
|
|
|
#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"
|
|
|
|
|
|
|
|
#ifdef HAVE_OS_PROTO_H
|
|
|
|
#include "os-proto.h"
|
|
|
|
#endif
|
|
|
|
|
2015-01-06 18:58:31 +00:00
|
|
|
/*
|
|
|
|
* Private data for capturing on snoop devices.
|
|
|
|
*/
|
|
|
|
struct pcap_snoop {
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|
|
|
struct pcap_stat stat;
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|
|
|
};
|
|
|
|
|
2004-03-31 09:07:39 +00:00
|
|
|
static int
|
|
|
|
pcap_read_snoop(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
|
1996-08-19 20:36:34 +00:00
|
|
|
{
|
2015-01-06 18:58:31 +00:00
|
|
|
struct pcap_snoop *psn = p->priv;
|
1996-08-19 20:36:34 +00:00
|
|
|
int cc;
|
|
|
|
register struct snoopheader *sh;
|
2005-05-29 17:46:52 +00:00
|
|
|
register u_int datalen;
|
|
|
|
register u_int caplen;
|
1996-08-19 20:36:34 +00:00
|
|
|
register u_char *cp;
|
|
|
|
|
|
|
|
again:
|
2004-03-31 09:07:39 +00:00
|
|
|
/*
|
|
|
|
* Has "pcap_breakloop()" been called?
|
|
|
|
*/
|
|
|
|
if (p->break_loop) {
|
|
|
|
/*
|
|
|
|
* Yes - clear the flag that indicates that it
|
|
|
|
* has, and return -2 to indicate that we were
|
|
|
|
* told to break out of the loop.
|
|
|
|
*/
|
|
|
|
p->break_loop = 0;
|
|
|
|
return (-2);
|
|
|
|
}
|
1996-08-19 20:36:34 +00:00
|
|
|
cc = read(p->fd, (char *)p->buffer, p->bufsize);
|
|
|
|
if (cc < 0) {
|
|
|
|
/* Don't choke when we get ptraced */
|
|
|
|
switch (errno) {
|
|
|
|
|
|
|
|
case EINTR:
|
2004-03-31 09:07:39 +00:00
|
|
|
goto again;
|
1996-08-19 20:36:34 +00:00
|
|
|
|
|
|
|
case EWOULDBLOCK:
|
|
|
|
return (0); /* XXX */
|
|
|
|
}
|
2001-04-03 04:18:09 +00:00
|
|
|
snprintf(p->errbuf, sizeof(p->errbuf),
|
|
|
|
"read: %s", pcap_strerror(errno));
|
1996-08-19 20:36:34 +00:00
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
sh = (struct snoopheader *)p->buffer;
|
|
|
|
datalen = sh->snoop_packetlen;
|
2005-05-29 17:46:52 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX - Sigh, snoop_packetlen is a 16 bit quantity. If we
|
|
|
|
* got a short length, but read a full sized snoop pakcet,
|
|
|
|
* assume we overflowed and add back the 64K...
|
|
|
|
*/
|
|
|
|
if (cc == (p->snapshot + sizeof(struct snoopheader)) &&
|
|
|
|
(datalen < p->snapshot))
|
|
|
|
datalen += (64 * 1024);
|
|
|
|
|
1996-08-19 20:36:34 +00:00
|
|
|
caplen = (datalen < p->snapshot) ? datalen : p->snapshot;
|
|
|
|
cp = (u_char *)(sh + 1) + p->offset; /* XXX */
|
|
|
|
|
2004-03-31 09:07:39 +00:00
|
|
|
/*
|
|
|
|
* XXX unfortunately snoop loopback isn't exactly like
|
|
|
|
* BSD's. The address family is encoded in the first 2
|
|
|
|
* bytes rather than the first 4 bytes! Luckily the last
|
|
|
|
* two snoop loopback bytes are zeroed.
|
|
|
|
*/
|
|
|
|
if (p->linktype == DLT_NULL && *((short *)(cp + 2)) == 0) {
|
|
|
|
u_int *uip = (u_int *)cp;
|
|
|
|
*uip >>= 16;
|
|
|
|
}
|
|
|
|
|
1996-08-19 20:36:34 +00:00
|
|
|
if (p->fcode.bf_insns == NULL ||
|
|
|
|
bpf_filter(p->fcode.bf_insns, cp, datalen, caplen)) {
|
|
|
|
struct pcap_pkthdr h;
|
2015-01-06 18:58:31 +00:00
|
|
|
++psn->stat.ps_recv;
|
2004-03-31 09:07:39 +00:00
|
|
|
h.ts.tv_sec = sh->snoop_timestamp.tv_sec;
|
|
|
|
h.ts.tv_usec = sh->snoop_timestamp.tv_usec;
|
1996-08-19 20:36:34 +00:00
|
|
|
h.len = datalen;
|
|
|
|
h.caplen = caplen;
|
|
|
|
(*callback)(user, &h, cp);
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
2005-05-29 17:46:52 +00:00
|
|
|
static int
|
|
|
|
pcap_inject_snoop(pcap_t *p, const void *buf, size_t size)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX - libnet overwrites the source address with what I
|
|
|
|
* presume is the interface's address; is that required?
|
|
|
|
*/
|
|
|
|
ret = write(p->fd, buf, size);
|
|
|
|
if (ret == -1) {
|
|
|
|
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "send: %s",
|
|
|
|
pcap_strerror(errno));
|
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
return (ret);
|
|
|
|
}
|
|
|
|
|
2004-03-31 09:07:39 +00:00
|
|
|
static int
|
|
|
|
pcap_stats_snoop(pcap_t *p, struct pcap_stat *ps)
|
1996-08-19 20:36:34 +00:00
|
|
|
{
|
2015-01-06 18:58:31 +00:00
|
|
|
struct pcap_snoop *psn = p->priv;
|
1996-08-19 20:36:34 +00:00
|
|
|
register struct rawstats *rs;
|
|
|
|
struct rawstats rawstats;
|
|
|
|
|
|
|
|
rs = &rawstats;
|
2001-04-03 04:18:09 +00:00
|
|
|
memset(rs, 0, sizeof(*rs));
|
1996-08-19 20:36:34 +00:00
|
|
|
if (ioctl(p->fd, SIOCRAWSTATS, (char *)rs) < 0) {
|
2001-04-03 04:18:09 +00:00
|
|
|
snprintf(p->errbuf, sizeof(p->errbuf),
|
|
|
|
"SIOCRAWSTATS: %s", pcap_strerror(errno));
|
1996-08-19 20:36:34 +00:00
|
|
|
return (-1);
|
|
|
|
}
|
|
|
|
|
2002-06-21 01:36:27 +00:00
|
|
|
/*
|
|
|
|
* "ifdrops" are those dropped by the network interface
|
|
|
|
* due to resource shortages or hardware errors.
|
|
|
|
*
|
|
|
|
* "sbdrops" are those dropped due to socket buffer limits.
|
|
|
|
*
|
|
|
|
* As filter is done in userland, "sbdrops" counts packets
|
|
|
|
* regardless of whether they would've passed the filter.
|
|
|
|
*
|
|
|
|
* XXX - does this count *all* Snoop or Drain sockets,
|
|
|
|
* rather than just this socket? If not, why does it have
|
|
|
|
* both Snoop and Drain statistics?
|
|
|
|
*/
|
2015-01-06 18:58:31 +00:00
|
|
|
psn->stat.ps_drop =
|
1996-08-19 20:36:34 +00:00
|
|
|
rs->rs_snoop.ss_ifdrops + rs->rs_snoop.ss_sbdrops +
|
|
|
|
rs->rs_drain.ds_ifdrops + rs->rs_drain.ds_sbdrops;
|
|
|
|
|
2002-06-21 01:36:27 +00:00
|
|
|
/*
|
|
|
|
* "ps_recv" counts only packets that passed the filter.
|
|
|
|
* As filtering is done in userland, this does not include
|
|
|
|
* packets dropped because we ran out of buffer space.
|
|
|
|
*/
|
2015-01-06 18:58:31 +00:00
|
|
|
*ps = psn->stat;
|
1996-08-19 20:36:34 +00:00
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* XXX can't disable promiscuous */
|
2009-03-21 20:43:56 +00:00
|
|
|
static int
|
|
|
|
pcap_activate_snoop(pcap_t *p)
|
1996-08-19 20:36:34 +00:00
|
|
|
{
|
|
|
|
int fd;
|
|
|
|
struct sockaddr_raw sr;
|
|
|
|
struct snoopfilter sf;
|
|
|
|
u_int v;
|
2001-04-03 04:18:09 +00:00
|
|
|
int ll_hdrlen;
|
|
|
|
int snooplen;
|
|
|
|
struct ifreq ifr;
|
1996-08-19 20:36:34 +00:00
|
|
|
|
|
|
|
fd = socket(PF_RAW, SOCK_RAW, RAWPROTO_SNOOP);
|
|
|
|
if (fd < 0) {
|
2009-03-21 20:43:56 +00:00
|
|
|
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "snoop socket: %s",
|
2001-04-03 04:18:09 +00:00
|
|
|
pcap_strerror(errno));
|
1996-08-19 20:36:34 +00:00
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
p->fd = fd;
|
2001-04-03 04:18:09 +00:00
|
|
|
memset(&sr, 0, sizeof(sr));
|
1996-08-19 20:36:34 +00:00
|
|
|
sr.sr_family = AF_RAW;
|
2009-03-21 20:43:56 +00:00
|
|
|
(void)strncpy(sr.sr_ifname, p->opt.source, sizeof(sr.sr_ifname));
|
1996-08-19 20:36:34 +00:00
|
|
|
if (bind(fd, (struct sockaddr *)&sr, sizeof(sr))) {
|
2009-03-21 20:43:56 +00:00
|
|
|
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "snoop bind: %s",
|
2001-04-03 04:18:09 +00:00
|
|
|
pcap_strerror(errno));
|
1996-08-19 20:36:34 +00:00
|
|
|
goto bad;
|
|
|
|
}
|
2001-04-03 04:18:09 +00:00
|
|
|
memset(&sf, 0, sizeof(sf));
|
1996-08-19 20:36:34 +00:00
|
|
|
if (ioctl(fd, SIOCADDSNOOP, &sf) < 0) {
|
2009-03-21 20:43:56 +00:00
|
|
|
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCADDSNOOP: %s",
|
2001-04-03 04:18:09 +00:00
|
|
|
pcap_strerror(errno));
|
1996-08-19 20:36:34 +00:00
|
|
|
goto bad;
|
|
|
|
}
|
Update libpcap to 1.1.1.
Changes:
Thu. April 1, 2010. guy@alum.mit.edu.
Summary for 1.1.1 libpcap release
Update CHANGES to reflect more of the changes in 1.1.0.
Fix build on RHEL5.
Fix shared library build on AIX.
Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu.
Summary for 1.1.0 libpcap release
Add SocketCAN capture support
Add Myricom SNF API support
Update Endace DAG and ERF support
Add support for shared libraries on Solaris, HP-UX, and AIX
Build, install, and un-install shared libraries by default;
don't build/install shared libraries on platforms we don't support
Fix building from a directory other than the source directory
Fix compiler warnings and builds on some platforms
Update config.guess and config.sub
Support monitor mode on mac80211 devices on Linux
Fix USB memory-mapped capturing on Linux; it requires a new DLT_
value
On Linux, scan /sys/class/net for devices if we have it; scan
it, or /proc/net/dev if we don't have /sys/class/net, even if
we have getifaddrs(), as it'll find interfaces with no
addresses
Add limited support for reading pcap-ng files
Fix BPF driver-loading error handling on AIX
Support getting the full-length interface description on FreeBSD
In the lexical analyzer, free up any addrinfo structure we got back
from getaddrinfo().
Add support for BPF and libdlpi in OpenSolaris (and SXCE)
Hyphenate "link-layer" everywhere
Add /sys/kernel/debug/usb/usbmon to the list of usbmon locations
In pcap_read_linux_mmap(), if there are no frames available, call
poll() even if we're in non-blocking mode, so we pick up
errors, and check for the errors in question.
Note that poll() works on BPF devices is Snow Leopard
If an ENXIO or ENETDOWN is received, it may mean the device has
gone away. Deal with it.
For BPF, raise the default capture buffer size to from 32k to 512k
Support ps_ifdrop on Linux
Added a bunch of #ifdef directives to make wpcap.dll (WinPcap) compile
under cygwin.
Changes to Linux mmapped captures.
Fix bug where create_ring would fail for particular snaplen and
buffer size combinations
Update pcap-config so that it handles libpcap requiring
additional libraries
Add workaround for threadsafeness on Windows
Add missing mapping for DLT_ENC <-> LINKTYPE_ENC
DLT: Add DLT_CAN_SOCKETCAN
DLT: Add Solaris ipnet
Don't check for DLT_IPNET if it's not defined
Add link-layer types for Fibre Channel FC-2
Add link-layer types for Wireless HART
Add link-layer types for AOS
Add link-layer types for DECT
Autoconf fixes (AIX, HP-UX, OSF/1, Tru64 cleanups)
Install headers unconditionally, and include vlan.h/bluetooth.h if
enabled
Autoconf fixes+cleanup
Support enabling/disabling bluetooth (--{en,dis}able-bluetooth)
Support disabling SITA support (--without-sita)
Return -1 on failure to create packet ring (if supported but
creation failed)
Fix handling of 'any' device, so that it can be opened, and no longer
attempt to open it in Monitor mode
Add support for snapshot length for USB Memory-Mapped Interface
Fix configure and build on recent Linux kernels
Fix memory-mapped Linux capture to support pcap_next() and
pcap_next_ex()
Fixes for Linux USB capture
DLT: Add DLT_LINUX_EVDEV
DLT: Add DLT_GSMTAP_UM
DLT: Add DLT_GSMTAP_ABIS
2010-10-28 16:22:13 +00:00
|
|
|
if (p->opt.buffer_size != 0)
|
|
|
|
v = p->opt.buffer_size;
|
2009-03-21 20:43:56 +00:00
|
|
|
else
|
|
|
|
v = 64 * 1024; /* default to 64K buffer size */
|
1996-08-19 20:36:34 +00:00
|
|
|
(void)setsockopt(fd, SOL_SOCKET, SO_RCVBUF, (char *)&v, sizeof(v));
|
|
|
|
/*
|
|
|
|
* XXX hack - map device name to link layer type
|
|
|
|
*/
|
2009-03-21 20:43:56 +00:00
|
|
|
if (strncmp("et", p->opt.source, 2) == 0 || /* Challenge 10 Mbit */
|
|
|
|
strncmp("ec", p->opt.source, 2) == 0 || /* Indigo/Indy 10 Mbit,
|
|
|
|
O2 10/100 */
|
|
|
|
strncmp("ef", p->opt.source, 2) == 0 || /* O200/2000 10/100 Mbit */
|
|
|
|
strncmp("eg", p->opt.source, 2) == 0 || /* Octane/O2xxx/O3xxx Gigabit */
|
|
|
|
strncmp("gfe", p->opt.source, 3) == 0 || /* GIO 100 Mbit */
|
|
|
|
strncmp("fxp", p->opt.source, 3) == 0 || /* Challenge VME Enet */
|
|
|
|
strncmp("ep", p->opt.source, 2) == 0 || /* Challenge 8x10 Mbit EPLEX */
|
|
|
|
strncmp("vfe", p->opt.source, 3) == 0 || /* Challenge VME 100Mbit */
|
|
|
|
strncmp("fa", p->opt.source, 2) == 0 ||
|
|
|
|
strncmp("qaa", p->opt.source, 3) == 0 ||
|
|
|
|
strncmp("cip", p->opt.source, 3) == 0 ||
|
|
|
|
strncmp("el", p->opt.source, 2) == 0) {
|
1996-08-19 20:36:34 +00:00
|
|
|
p->linktype = DLT_EN10MB;
|
|
|
|
p->offset = RAW_HDRPAD(sizeof(struct ether_header));
|
2001-04-03 04:18:09 +00:00
|
|
|
ll_hdrlen = sizeof(struct ether_header);
|
2005-05-29 17:46:52 +00:00
|
|
|
/*
|
|
|
|
* This is (presumably) a real Ethernet capture; give it a
|
|
|
|
* link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so
|
|
|
|
* that an application can let you choose it, in case you're
|
|
|
|
* capturing DOCSIS traffic that a Cisco Cable Modem
|
|
|
|
* Termination System is putting out onto an Ethernet (it
|
|
|
|
* doesn't put an Ethernet header onto the wire, it puts raw
|
|
|
|
* DOCSIS frames out on the wire inside the low-level
|
|
|
|
* Ethernet framing).
|
|
|
|
*
|
|
|
|
* XXX - are there any sorts of "fake Ethernet" that have
|
|
|
|
* Ethernet link-layer headers but that *shouldn't offer
|
|
|
|
* DLT_DOCSIS as a Cisco CMTS won't put traffic onto it
|
|
|
|
* or get traffic bridged onto it? "el" is for ATM LANE
|
|
|
|
* Ethernet devices, so that might be the case for them;
|
|
|
|
* the same applies for "qaa" classical IP devices. If
|
|
|
|
* "fa" devices are for FORE SPANS, that'd apply to them
|
|
|
|
* as well; what are "cip" devices - some other ATM
|
|
|
|
* Classical IP devices?
|
|
|
|
*/
|
|
|
|
p->dlt_list = (u_int *) malloc(sizeof(u_int) * 2);
|
|
|
|
/*
|
|
|
|
* If that fails, just leave the list empty.
|
|
|
|
*/
|
|
|
|
if (p->dlt_list != NULL) {
|
|
|
|
p->dlt_list[0] = DLT_EN10MB;
|
|
|
|
p->dlt_list[1] = DLT_DOCSIS;
|
|
|
|
p->dlt_count = 2;
|
|
|
|
}
|
2009-03-21 20:43:56 +00:00
|
|
|
} else if (strncmp("ipg", p->opt.source, 3) == 0 ||
|
|
|
|
strncmp("rns", p->opt.source, 3) == 0 || /* O2/200/2000 FDDI */
|
|
|
|
strncmp("xpi", p->opt.source, 3) == 0) {
|
1996-08-19 20:36:34 +00:00
|
|
|
p->linktype = DLT_FDDI;
|
|
|
|
p->offset = 3; /* XXX yeah? */
|
2001-04-03 04:18:09 +00:00
|
|
|
ll_hdrlen = 13;
|
2009-03-21 20:43:56 +00:00
|
|
|
} else if (strncmp("ppp", p->opt.source, 3) == 0) {
|
1998-09-15 19:28:10 +00:00
|
|
|
p->linktype = DLT_RAW;
|
2001-04-03 04:18:09 +00:00
|
|
|
ll_hdrlen = 0; /* DLT_RAW meaning "no PPP header, just the IP packet"? */
|
2009-03-21 20:43:56 +00:00
|
|
|
} else if (strncmp("qfa", p->opt.source, 3) == 0) {
|
2004-03-31 09:07:39 +00:00
|
|
|
p->linktype = DLT_IP_OVER_FC;
|
|
|
|
ll_hdrlen = 24;
|
2009-03-21 20:43:56 +00:00
|
|
|
} else if (strncmp("pl", p->opt.source, 2) == 0) {
|
2004-03-31 09:07:39 +00:00
|
|
|
p->linktype = DLT_RAW;
|
|
|
|
ll_hdrlen = 0; /* Cray UNICOS/mp pseudo link */
|
2009-03-21 20:43:56 +00:00
|
|
|
} else if (strncmp("lo", p->opt.source, 2) == 0) {
|
1996-08-19 20:36:34 +00:00
|
|
|
p->linktype = DLT_NULL;
|
2004-03-31 09:07:39 +00:00
|
|
|
ll_hdrlen = 4;
|
1996-08-19 20:36:34 +00:00
|
|
|
} else {
|
2009-03-21 20:43:56 +00:00
|
|
|
snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
|
2001-04-03 04:18:09 +00:00
|
|
|
"snoop: unknown physical layer type");
|
|
|
|
goto bad;
|
|
|
|
}
|
2009-03-21 20:43:56 +00:00
|
|
|
|
|
|
|
if (p->opt.rfmon) {
|
|
|
|
/*
|
|
|
|
* No monitor mode on Irix (no Wi-Fi devices on
|
|
|
|
* hardware supported by Irix).
|
|
|
|
*/
|
|
|
|
return (PCAP_ERROR_RFMON_NOTSUP);
|
|
|
|
}
|
|
|
|
|
2001-04-03 04:18:09 +00:00
|
|
|
#ifdef SIOCGIFMTU
|
|
|
|
/*
|
|
|
|
* XXX - IRIX appears to give you an error if you try to set the
|
|
|
|
* capture length to be greater than the MTU, so let's try to get
|
|
|
|
* the MTU first and, if that succeeds, trim the snap length
|
|
|
|
* to be no greater than the MTU.
|
|
|
|
*/
|
2009-03-21 20:43:56 +00:00
|
|
|
(void)strncpy(ifr.ifr_name, p->opt.source, sizeof(ifr.ifr_name));
|
2001-04-03 04:18:09 +00:00
|
|
|
if (ioctl(fd, SIOCGIFMTU, (char *)&ifr) < 0) {
|
2009-03-21 20:43:56 +00:00
|
|
|
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCGIFMTU: %s",
|
2001-04-03 04:18:09 +00:00
|
|
|
pcap_strerror(errno));
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* OK, we got it.
|
|
|
|
*
|
|
|
|
* XXX - some versions of IRIX 6.5 define "ifr_mtu" and have an
|
|
|
|
* "ifru_metric" member of the "ifr_ifru" union in an "ifreq"
|
|
|
|
* structure, others don't.
|
|
|
|
*
|
|
|
|
* I've no idea what's going on, so, if "ifr_mtu" isn't defined,
|
|
|
|
* we define it as "ifr_metric", as using that field appears to
|
|
|
|
* work on the versions that lack "ifr_mtu" (and, on those that
|
|
|
|
* don't lack it, "ifru_metric" and "ifru_mtu" are both "int"
|
|
|
|
* members of the "ifr_ifru" union, which suggests that they
|
|
|
|
* may be interchangeable in this case).
|
|
|
|
*/
|
|
|
|
#ifndef ifr_mtu
|
|
|
|
#define ifr_mtu ifr_metric
|
|
|
|
#endif
|
2009-03-21 20:43:56 +00:00
|
|
|
if (p->snapshot > ifr.ifr_mtu + ll_hdrlen)
|
|
|
|
p->snapshot = ifr.ifr_mtu + ll_hdrlen;
|
2001-04-03 04:18:09 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The argument to SIOCSNOOPLEN is the number of link-layer
|
|
|
|
* payload bytes to capture - it doesn't count link-layer
|
|
|
|
* header bytes.
|
|
|
|
*/
|
2009-03-21 20:43:56 +00:00
|
|
|
snooplen = p->snapshot - ll_hdrlen;
|
2001-04-03 04:18:09 +00:00
|
|
|
if (snooplen < 0)
|
|
|
|
snooplen = 0;
|
|
|
|
if (ioctl(fd, SIOCSNOOPLEN, &snooplen) < 0) {
|
2009-03-21 20:43:56 +00:00
|
|
|
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCSNOOPLEN: %s",
|
2001-04-03 04:18:09 +00:00
|
|
|
pcap_strerror(errno));
|
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
v = 1;
|
|
|
|
if (ioctl(fd, SIOCSNOOPING, &v) < 0) {
|
2009-03-21 20:43:56 +00:00
|
|
|
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "SIOCSNOOPING: %s",
|
2001-04-03 04:18:09 +00:00
|
|
|
pcap_strerror(errno));
|
1996-08-19 20:36:34 +00:00
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
|
|
|
p->bufsize = 4096; /* XXX */
|
|
|
|
p->buffer = (u_char *)malloc(p->bufsize);
|
|
|
|
if (p->buffer == NULL) {
|
2009-03-21 20:43:56 +00:00
|
|
|
snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "malloc: %s",
|
2001-04-03 04:18:09 +00:00
|
|
|
pcap_strerror(errno));
|
1996-08-19 20:36:34 +00:00
|
|
|
goto bad;
|
|
|
|
}
|
|
|
|
|
2004-03-31 09:07:39 +00:00
|
|
|
/*
|
|
|
|
* "p->fd" is a socket, so "select()" should work on it.
|
|
|
|
*/
|
|
|
|
p->selectable_fd = p->fd;
|
|
|
|
|
|
|
|
p->read_op = pcap_read_snoop;
|
2005-05-29 17:46:52 +00:00
|
|
|
p->inject_op = pcap_inject_snoop;
|
2004-03-31 09:07:39 +00:00
|
|
|
p->setfilter_op = install_bpf_program; /* no kernel filtering */
|
2005-07-11 03:24:53 +00:00
|
|
|
p->setdirection_op = NULL; /* Not implemented. */
|
2004-03-31 09:07:39 +00:00
|
|
|
p->set_datalink_op = NULL; /* can't change data link type */
|
|
|
|
p->getnonblock_op = pcap_getnonblock_fd;
|
|
|
|
p->setnonblock_op = pcap_setnonblock_fd;
|
|
|
|
p->stats_op = pcap_stats_snoop;
|
|
|
|
|
2009-03-21 20:43:56 +00:00
|
|
|
return (0);
|
1996-08-19 20:36:34 +00:00
|
|
|
bad:
|
Update libpcap to 1.1.1.
Changes:
Thu. April 1, 2010. guy@alum.mit.edu.
Summary for 1.1.1 libpcap release
Update CHANGES to reflect more of the changes in 1.1.0.
Fix build on RHEL5.
Fix shared library build on AIX.
Thu. March 11, 2010. ken@netfunctional.ca/guy@alum.mit.edu.
Summary for 1.1.0 libpcap release
Add SocketCAN capture support
Add Myricom SNF API support
Update Endace DAG and ERF support
Add support for shared libraries on Solaris, HP-UX, and AIX
Build, install, and un-install shared libraries by default;
don't build/install shared libraries on platforms we don't support
Fix building from a directory other than the source directory
Fix compiler warnings and builds on some platforms
Update config.guess and config.sub
Support monitor mode on mac80211 devices on Linux
Fix USB memory-mapped capturing on Linux; it requires a new DLT_
value
On Linux, scan /sys/class/net for devices if we have it; scan
it, or /proc/net/dev if we don't have /sys/class/net, even if
we have getifaddrs(), as it'll find interfaces with no
addresses
Add limited support for reading pcap-ng files
Fix BPF driver-loading error handling on AIX
Support getting the full-length interface description on FreeBSD
In the lexical analyzer, free up any addrinfo structure we got back
from getaddrinfo().
Add support for BPF and libdlpi in OpenSolaris (and SXCE)
Hyphenate "link-layer" everywhere
Add /sys/kernel/debug/usb/usbmon to the list of usbmon locations
In pcap_read_linux_mmap(), if there are no frames available, call
poll() even if we're in non-blocking mode, so we pick up
errors, and check for the errors in question.
Note that poll() works on BPF devices is Snow Leopard
If an ENXIO or ENETDOWN is received, it may mean the device has
gone away. Deal with it.
For BPF, raise the default capture buffer size to from 32k to 512k
Support ps_ifdrop on Linux
Added a bunch of #ifdef directives to make wpcap.dll (WinPcap) compile
under cygwin.
Changes to Linux mmapped captures.
Fix bug where create_ring would fail for particular snaplen and
buffer size combinations
Update pcap-config so that it handles libpcap requiring
additional libraries
Add workaround for threadsafeness on Windows
Add missing mapping for DLT_ENC <-> LINKTYPE_ENC
DLT: Add DLT_CAN_SOCKETCAN
DLT: Add Solaris ipnet
Don't check for DLT_IPNET if it's not defined
Add link-layer types for Fibre Channel FC-2
Add link-layer types for Wireless HART
Add link-layer types for AOS
Add link-layer types for DECT
Autoconf fixes (AIX, HP-UX, OSF/1, Tru64 cleanups)
Install headers unconditionally, and include vlan.h/bluetooth.h if
enabled
Autoconf fixes+cleanup
Support enabling/disabling bluetooth (--{en,dis}able-bluetooth)
Support disabling SITA support (--without-sita)
Return -1 on failure to create packet ring (if supported but
creation failed)
Fix handling of 'any' device, so that it can be opened, and no longer
attempt to open it in Monitor mode
Add support for snapshot length for USB Memory-Mapped Interface
Fix configure and build on recent Linux kernels
Fix memory-mapped Linux capture to support pcap_next() and
pcap_next_ex()
Fixes for Linux USB capture
DLT: Add DLT_LINUX_EVDEV
DLT: Add DLT_GSMTAP_UM
DLT: Add DLT_GSMTAP_ABIS
2010-10-28 16:22:13 +00:00
|
|
|
pcap_cleanup_live_common(p);
|
2009-03-21 20:43:56 +00:00
|
|
|
return (PCAP_ERROR);
|
|
|
|
}
|
|
|
|
|
|
|
|
pcap_t *
|
2013-05-30 06:41:26 +00:00
|
|
|
pcap_create_interface(const char *device, char *ebuf)
|
2009-03-21 20:43:56 +00:00
|
|
|
{
|
|
|
|
pcap_t *p;
|
|
|
|
|
2015-01-06 18:58:31 +00:00
|
|
|
p = pcap_create_common(device, ebuf, sizeof (struct pcap_snoop));
|
2009-03-21 20:43:56 +00:00
|
|
|
if (p == NULL)
|
|
|
|
return (NULL);
|
|
|
|
|
|
|
|
p->activate_op = pcap_activate_snoop;
|
|
|
|
return (p);
|
1996-08-19 20:36:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
int
|
2004-03-31 09:07:39 +00:00
|
|
|
pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
|
1996-08-19 20:36:34 +00:00
|
|
|
{
|
|
|
|
return (0);
|
|
|
|
}
|