File Manager

003 File Manager

Current Path: /usr/src/contrib/libpcap

📁 ..
📄 CHANGES(41.04 KB)
📄 CMakeLists.txt(84.97 KB)
📄 CONTRIBUTING.md(1.41 KB)
📄 CREDITS(11.47 KB)
📁 ChmodBPF
📄 INSTALL.md(15.44 KB)
📄 LICENSE(868 B)
📄 Makefile-devel-adds(614 B)
📄 Makefile.in(23.68 KB)
📄 README.md(3.71 KB)
📄 TODO(1.51 KB)
📄 VERSION(6 B)
📁 Win32
📄 aclocal.m4(30.92 KB)
📄 arcnet.h(2.39 KB)
📄 atmuni31.h(3.87 KB)
📄 bpf_dump.c(1.9 KB)
📄 bpf_filter.c(12.22 KB)
📄 bpf_image.c(7.38 KB)
📄 chmod_bpf(757 B)
📁 cmake
📄 cmake_uninstall.cmake.in(1.01 KB)
📄 cmakeconfig.h.in(11.15 KB)
📄 config.guess(43.17 KB)
📄 config.h.in(10.25 KB)
📄 config.sub(34.93 KB)
📄 configure(331.21 KB)
📄 configure.ac(64.36 KB)
📄 diag-control.h(8.3 KB)
📄 dlpisubs.c(9.41 KB)
📄 dlpisubs.h(702 B)
📁 doc
📄 etherent.c(3.43 KB)
📄 ethertype.h(3.47 KB)
📄 extract.h(9.23 KB)
📄 fad-getad.c(8.62 KB)
📄 fad-gifc.c(12.84 KB)
📄 fad-glifc.c(9.37 KB)
📄 fmtutils.c(6.35 KB)
📄 fmtutils.h(2.19 KB)
📄 ftmacros.h(4.22 KB)
📄 gencode.c(257 KB)
📄 gencode.h(11.44 KB)
📄 grammar.y(24.66 KB)
📄 ieee80211.h(5.25 KB)
📄 install-sh(5.45 KB)
📁 lbl
📄 libpcap.pc.in(484 B)
📄 llc.h(2.56 KB)
📁 missing
📄 mkdep(2.43 KB)
📁 msdos
📄 nametoaddr.c(18.83 KB)
📄 nametoaddr.h(2.12 KB)
📄 nlpid.h(1.66 KB)
📄 nomkdep(135 B)
📄 optimize.c(62.27 KB)
📄 optimize.h(1.29 KB)
📄 org.tcpdump.chmod_bpf.plist(441 B)
📁 pcap
📄 pcap-bpf.c(84.02 KB)
📄 pcap-bpf.h(2.24 KB)
📄 pcap-bt-linux.c(11.42 KB)
📄 pcap-bt-linux.h(1.76 KB)
📄 pcap-bt-monitor-linux.c(7.84 KB)
📄 pcap-bt-monitor-linux.h(1.64 KB)
📄 pcap-common.c(47.14 KB)
📄 pcap-common.h(2.29 KB)
📄 pcap-config.1(2.27 KB)
📄 pcap-config.in(1.8 KB)
📄 pcap-dag.c(37.15 KB)
📄 pcap-dag.h(457 B)
📄 pcap-dbus.c(10.03 KB)
📄 pcap-dbus.h(112 B)
📄 pcap-dll.rc(1.03 KB)
📄 pcap-dlpi.c(47.56 KB)
📄 pcap-dos.c(35.9 KB)
📄 pcap-dos.h(6.7 KB)
📄 pcap-enet.c(4.74 KB)
📄 pcap-filter.manmisc.in(33.54 KB)
📄 pcap-int.h(16.94 KB)
📄 pcap-libdlpi.c(12.11 KB)
📄 pcap-linktype.manmisc.in(2.33 KB)
📄 pcap-linux.c(207.89 KB)
📄 pcap-namedb.h(1.98 KB)
📄 pcap-netfilter-linux.c(20.48 KB)
📄 pcap-netfilter-linux.h(1.67 KB)
📄 pcap-netmap.c(7.82 KB)
📄 pcap-netmap.h(126 B)
📄 pcap-new.c(12.79 KB)
📄 pcap-nit.c(10.2 KB)
📄 pcap-npf.c(51.61 KB)
📄 pcap-null.c(1.9 KB)
📄 pcap-pf.c(18.48 KB)
📄 pcap-rdmasniff.c(10.98 KB)
📄 pcap-rdmasniff.h(140 B)
📄 pcap-rpcap-int.h(3.43 KB)
📄 pcap-rpcap.c(96.91 KB)
📄 pcap-rpcap.h(2.19 KB)
📄 pcap-savefile.manfile.in(5.11 KB)
📄 pcap-septel.c(8.69 KB)
📄 pcap-septel.h(512 B)
📄 pcap-sita.c(36.34 KB)
📄 pcap-sita.h(224 B)
📄 pcap-sita.html(37.43 KB)
📄 pcap-snf.c(14.75 KB)
📄 pcap-snf.h(110 B)
📄 pcap-snit.c(12.67 KB)
📄 pcap-snoop.c(13.26 KB)
📄 pcap-tc.c(34.21 KB)
📄 pcap-tc.h(1.9 KB)
📄 pcap-tstamp.manmisc.in(7.7 KB)
📄 pcap-types.h(1.93 KB)
📄 pcap-usb-linux.c(35.89 KB)
📄 pcap-usb-linux.h(1.75 KB)
📄 pcap.3pcap.in(29.62 KB)
📄 pcap.c(103.69 KB)
📄 pcap.h(2.17 KB)
📄 pcap_activate.3pcap(3.8 KB)
📄 pcap_breakloop.3pcap(3.98 KB)
📄 pcap_can_set_rfmon.3pcap(2.63 KB)
📄 pcap_close.3pcap(1.47 KB)
📄 pcap_compile.3pcap.in(3.02 KB)
📄 pcap_create.3pcap(2.19 KB)
📄 pcap_datalink.3pcap.in(2.39 KB)
📄 pcap_datalink_name_to_val.3pcap(1.82 KB)
📄 pcap_datalink_val_to_name.3pcap(2.47 KB)
📄 pcap_dump.3pcap(1.73 KB)
📄 pcap_dump_close.3pcap(1.49 KB)
📄 pcap_dump_file.3pcap(1.54 KB)
📄 pcap_dump_flush.3pcap(1.69 KB)
📄 pcap_dump_ftell.3pcap(2.11 KB)
📄 pcap_dump_open.3pcap.in(3.31 KB)
📄 pcap_file.3pcap(2.06 KB)
📄 pcap_fileno.3pcap(2 KB)
📄 pcap_findalldevs.3pcap(6.25 KB)
📄 pcap_freecode.3pcap(1.67 KB)
📄 pcap_get_required_select_timeout.3pcap(3.04 KB)
📄 pcap_get_selectable_fd.3pcap(4.66 KB)
📄 pcap_get_tstamp_precision.3pcap.in(1.83 KB)
📄 pcap_geterr.3pcap(1.84 KB)
📄 pcap_inject.3pcap(3.34 KB)
📄 pcap_is_swapped.3pcap(1.91 KB)
📄 pcap_lib_version.3pcap(1.6 KB)
📄 pcap_list_datalinks.3pcap.in(2.54 KB)
📄 pcap_list_tstamp_types.3pcap.in(2.98 KB)
📄 pcap_lookupdev.3pcap(2.47 KB)
📄 pcap_lookupnet.3pcap(1.95 KB)
📄 pcap_loop.3pcap(6.58 KB)
📄 pcap_major_version.3pcap(1.96 KB)
📄 pcap_next_ex.3pcap(4.86 KB)
📄 pcap_offline_filter.3pcap(1.95 KB)
📄 pcap_open_dead.3pcap.in(2.65 KB)
📄 pcap_open_live.3pcap(2.65 KB)
📄 pcap_open_offline.3pcap.in(3.8 KB)
📄 pcap_set_buffer_size.3pcap(1.79 KB)
📄 pcap_set_datalink.3pcap(1.84 KB)
📄 pcap_set_immediate_mode.3pcap.in(3.27 KB)
📄 pcap_set_promisc.3pcap(1.82 KB)
📄 pcap_set_protocol_linux.3pcap(2.81 KB)
📄 pcap_set_rfmon.3pcap(1.82 KB)
📄 pcap_set_snaplen.3pcap(1.74 KB)
📄 pcap_set_timeout.3pcap(2.15 KB)
📄 pcap_set_tstamp_precision.3pcap.in(2.38 KB)
📄 pcap_set_tstamp_type.3pcap.in(2.73 KB)
📄 pcap_setdirection.3pcap(2.36 KB)
📄 pcap_setfilter.3pcap(1.79 KB)
📄 pcap_setnonblock.3pcap(2.82 KB)
📄 pcap_snapshot.3pcap(1.91 KB)
📄 pcap_stats.3pcap(3.35 KB)
📄 pcap_statustostr.3pcap(1.55 KB)
📄 pcap_strerror.3pcap(1.54 KB)
📄 pcap_tstamp_type_name_to_val.3pcap(1.87 KB)
📄 pcap_tstamp_type_val_to_name.3pcap(1.99 KB)
📄 portability.h(5.46 KB)
📄 ppp.h(2.62 KB)
📄 rpcap-protocol.c(6.67 KB)
📄 rpcap-protocol.h(18.61 KB)
📁 rpcapd
📄 savefile.c(13.72 KB)
📄 scanner.l(14.36 KB)
📄 sf-pcap.c(30.33 KB)
📄 sf-pcap.h(1.69 KB)
📄 sf-pcapng.c(38.9 KB)
📄 sf-pcapng.h(1.41 KB)
📄 sockutils.c(52.26 KB)
📄 sockutils.h(5.22 KB)
📄 sunatmpos.h(2.09 KB)
📁 testprogs
📁 tests
📄 varattrs.h(2.38 KB)

Editing: pcap-netmap.c

/*
 * Copyright (C) 2014 Luigi Rizzo. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <poll.h>
#include <ctype.h>
#include <errno.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define NETMAP_WITH_LIBS
#include <net/netmap_user.h>

#include "pcap-int.h"
#include "pcap-netmap.h"

#ifndef __FreeBSD__
  /*
   * On FreeBSD we use IFF_PPROMISC which is in ifr_flagshigh.
   * Remap to IFF_PROMISC on other platforms.
   *
   * XXX - DragonFly BSD?
   */
  #define IFF_PPROMISC	IFF_PROMISC
#endif /* __FreeBSD__ */

struct pcap_netmap {
	struct nm_desc *d;	/* pointer returned by nm_open() */
	pcap_handler cb;	/* callback and argument */
	u_char *cb_arg;
	int must_clear_promisc;	/* flag */
	uint64_t rx_pkts;	/* # of pkts received before the filter */
};

static int
pcap_netmap_stats(pcap_t *p, struct pcap_stat *ps)
{
	struct pcap_netmap *pn = p->priv;

ps->ps_recv = (u_int)pn->rx_pkts;
	ps->ps_drop = 0;
	ps->ps_ifdrop = 0;
	return 0;
}

static void
pcap_netmap_filter(u_char *arg, struct pcap_pkthdr *h, const u_char *buf)
{
	pcap_t *p = (pcap_t *)arg;
	struct pcap_netmap *pn = p->priv;
	const struct bpf_insn *pc = p->fcode.bf_insns;

++pn->rx_pkts;
	if (pc == NULL || bpf_filter(pc, buf, h->len, h->caplen))
		pn->cb(pn->cb_arg, h, buf);
}

static int
pcap_netmap_dispatch(pcap_t *p, int cnt, pcap_handler cb, u_char *user)
{
	int ret;
	struct pcap_netmap *pn = p->priv;
	struct nm_desc *d = pn->d;
	struct pollfd pfd = { .fd = p->fd, .events = POLLIN, .revents = 0 };

pn->cb = cb;
	pn->cb_arg = user;

for (;;) {
		if (p->break_loop) {
			p->break_loop = 0;
			return PCAP_ERROR_BREAK;
		}
		/* nm_dispatch won't run forever */

ret = nm_dispatch((void *)d, cnt, (void *)pcap_netmap_filter, (void *)p);
		if (ret != 0)
			break;
		errno = 0;
		ret = poll(&pfd, 1, p->opt.timeout);
	}
	return ret;
}

/* XXX need to check the NIOCTXSYNC/poll */
static int
pcap_netmap_inject(pcap_t *p, const void *buf, size_t size)
{
	struct pcap_netmap *pn = p->priv;
	struct nm_desc *d = pn->d;

return nm_inject(d, buf, size);
}

static int
pcap_netmap_ioctl(pcap_t *p, u_long what, uint32_t *if_flags)
{
	struct pcap_netmap *pn = p->priv;
	struct nm_desc *d = pn->d;
	struct ifreq ifr;
	int error, fd = d->fd;

#ifdef linux
	fd = socket(AF_INET, SOCK_DGRAM, 0);
	if (fd < 0) {
		fprintf(stderr, "Error: cannot get device control socket.\n");
		return -1;
	}
#endif /* linux */
	bzero(&ifr, sizeof(ifr));
	strncpy(ifr.ifr_name, d->req.nr_name, sizeof(ifr.ifr_name));
	switch (what) {
	case SIOCSIFFLAGS:
		/*
		 * The flags we pass in are 32-bit and unsigned.
		 *
		 * On most if not all UN*Xes, ifr_flags is 16-bit and
		 * signed, and the result of assigning a longer
		 * unsigned value to a shorter signed value is
		 * implementation-defined (even if, in practice, it'll
		 * do what's intended on all platforms we support
		 * result of assigning a 32-bit unsigned value).
		 * So we mask out the upper 16 bits.
		 */
		ifr.ifr_flags = *if_flags & 0xffff;
#ifdef __FreeBSD__
		/*
		 * In FreeBSD, we need to set the high-order flags,
		 * as we're using IFF_PPROMISC, which is in those bits.
		 *
		 * XXX - DragonFly BSD?
		 */
		ifr.ifr_flagshigh = *if_flags >> 16;
#endif /* __FreeBSD__ */
		break;
	}
	error = ioctl(fd, what, &ifr);
	if (!error) {
		switch (what) {
		case SIOCGIFFLAGS:
			/*
			 * The flags we return are 32-bit.
			 *
			 * On most if not all UN*Xes, ifr_flags is
			 * 16-bit and signed, and will get sign-
			 * extended, so that the upper 16 bits of
			 * those flags will be forced on.  So we
			 * mask out the upper 16 bits of the
			 * sign-extended value.
			 */
			*if_flags = ifr.ifr_flags & 0xffff;
#ifdef __FreeBSD__
			/*
			 * In FreeBSD, we need to return the
			 * high-order flags, as we're using
			 * IFF_PPROMISC, which is in those bits.
			 *
			 * XXX - DragonFly BSD?
			 */
			*if_flags |= (ifr.ifr_flagshigh << 16);
#endif /* __FreeBSD__ */
		}
	}
#ifdef linux
	close(fd);
#endif /* linux */
	return error ? -1 : 0;
}

static void
pcap_netmap_close(pcap_t *p)
{
	struct pcap_netmap *pn = p->priv;
	struct nm_desc *d = pn->d;
	uint32_t if_flags = 0;

if (pn->must_clear_promisc) {
		pcap_netmap_ioctl(p, SIOCGIFFLAGS, &if_flags); /* fetch flags */
		if (if_flags & IFF_PPROMISC) {
			if_flags &= ~IFF_PPROMISC;
			pcap_netmap_ioctl(p, SIOCSIFFLAGS, &if_flags);
		}
	}
	nm_close(d);
	pcap_cleanup_live_common(p);
}

static int
pcap_netmap_activate(pcap_t *p)
{
	struct pcap_netmap *pn = p->priv;
	struct nm_desc *d;
	uint32_t if_flags = 0;

d = nm_open(p->opt.device, NULL, 0, NULL);
	if (d == NULL) {
		pcap_fmt_errmsg_for_errno(p->errbuf, PCAP_ERRBUF_SIZE,
		    errno, "netmap open: cannot access %s",
		    p->opt.device);
		pcap_cleanup_live_common(p);
		return (PCAP_ERROR);
	}
#if 0
	fprintf(stderr, "%s device %s priv %p fd %d ports %d..%d\n",
	    __FUNCTION__, p->opt.device, d, d->fd,
	    d->first_rx_ring, d->last_rx_ring);
#endif
	pn->d = d;
	p->fd = d->fd;

/*
	 * Turn a negative snapshot value (invalid), a snapshot value of
	 * 0 (unspecified), or a value bigger than the normal maximum
	 * value, into the maximum allowed value.
	 *
	 * If some application really *needs* a bigger snapshot
	 * length, we should just increase MAXIMUM_SNAPLEN.
	 */
	if (p->snapshot <= 0 || p->snapshot > MAXIMUM_SNAPLEN)
		p->snapshot = MAXIMUM_SNAPLEN;

if (p->opt.promisc && !(d->req.nr_ringid & NETMAP_SW_RING)) {
		pcap_netmap_ioctl(p, SIOCGIFFLAGS, &if_flags); /* fetch flags */
		if (!(if_flags & IFF_PPROMISC)) {
			pn->must_clear_promisc = 1;
			if_flags |= IFF_PPROMISC;
			pcap_netmap_ioctl(p, SIOCSIFFLAGS, &if_flags);
		}
	}
	p->linktype = DLT_EN10MB;
	p->selectable_fd = p->fd;
	p->read_op = pcap_netmap_dispatch;
	p->inject_op = pcap_netmap_inject;
	p->setfilter_op = install_bpf_program;
	p->setdirection_op = NULL;
	p->set_datalink_op = NULL;
	p->getnonblock_op = pcap_getnonblock_fd;
	p->setnonblock_op = pcap_setnonblock_fd;
	p->stats_op = pcap_netmap_stats;
	p->cleanup_op = pcap_netmap_close;

return (0);
}

pcap_t *
pcap_netmap_create(const char *device, char *ebuf, int *is_ours)
{
	pcap_t *p;

*is_ours = (!strncmp(device, "netmap:", 7) || !strncmp(device, "vale", 4));
	if (! *is_ours)
		return NULL;
	p = pcap_create_common(ebuf, sizeof (struct pcap_netmap));
	if (p == NULL)
		return (NULL);
	p->activate_op = pcap_netmap_activate;
	return (p);
}

/*
 * The "device name" for netmap devices isn't a name for a device, it's
 * an expression that indicates how the device should be set up, so
 * there's no way to enumerate them.
 */
int
pcap_netmap_findalldevs(pcap_if_list_t *devlistp _U_, char *err_str _U_)
{
	return 0;
}

003 File Manager

Editing: pcap-netmap.c

Upload File

Create Folder