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📁 ChmodBPF
📄 INSTALL.md(15.44 KB)
📄 LICENSE(868 B)
📄 Makefile-devel-adds(614 B)
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📄 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)
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📄 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-dbus.c

/*
 * Copyright (c) 2012 Jakub Zawadzki
 * 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.
 * 3. The name of the author may not be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
 * OWNER 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 <string.h>

#include <time.h>
#include <sys/time.h>

#include <dbus/dbus.h>

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

/*
 * Private data for capturing on D-Bus.
 */
struct pcap_dbus {
	DBusConnection *conn;
	u_int	packets_read;	/* count of packets read */
};

static int
dbus_read(pcap_t *handle, int max_packets _U_, pcap_handler callback, u_char *user)
{
	struct pcap_dbus *handlep = handle->priv;

struct pcap_pkthdr pkth;
	DBusMessage *message;

char *raw_msg;
	int raw_msg_len;

int count = 0;

message = dbus_connection_pop_message(handlep->conn);

while (!message) {
		/* XXX handle->opt.timeout = timeout_ms; */
		if (!dbus_connection_read_write(handlep->conn, 100)) {
			pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Connection closed");
			return -1;
		}

if (handle->break_loop) {
			handle->break_loop = 0;
			return -2;
		}

message = dbus_connection_pop_message(handlep->conn);
	}

if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
		pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Disconnected");
		return -1;
	}

if (dbus_message_marshal(message, &raw_msg, &raw_msg_len)) {
		pkth.caplen = pkth.len = raw_msg_len;
		/* pkth.caplen = min (payload_len, handle->snapshot); */

gettimeofday(&pkth.ts, NULL);
		if (handle->fcode.bf_insns == NULL ||
		    bpf_filter(handle->fcode.bf_insns, (u_char *)raw_msg, pkth.len, pkth.caplen)) {
			handlep->packets_read++;
			callback(user, &pkth, (u_char *)raw_msg);
			count++;
		}

dbus_free(raw_msg);
	}
	return count;
}

static int
dbus_write(pcap_t *handle, const void *buf, size_t size)
{
	/* XXX, not tested */
	struct pcap_dbus *handlep = handle->priv;

DBusError error = DBUS_ERROR_INIT;
	DBusMessage *msg;

if (!(msg = dbus_message_demarshal(buf, size, &error))) {
		pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dbus_message_demarshal() failed: %s", error.message);
		dbus_error_free(&error);
		return -1;
	}

dbus_connection_send(handlep->conn, msg, NULL);
	dbus_connection_flush(handlep->conn);

dbus_message_unref(msg);
	return 0;
}

static int
dbus_stats(pcap_t *handle, struct pcap_stat *stats)
{
	struct pcap_dbus *handlep = handle->priv;

stats->ps_recv = handlep->packets_read;
	stats->ps_drop = 0;
	stats->ps_ifdrop = 0;
	return 0;
}

static void
dbus_cleanup(pcap_t *handle)
{
	struct pcap_dbus *handlep = handle->priv;

dbus_connection_unref(handlep->conn);

pcap_cleanup_live_common(handle);
}

/*
 * We don't support non-blocking mode.  I'm not sure what we'd
 * do to support it and, given that we don't support select()/
 * poll()/epoll_wait()/kevent() etc., it probably doesn't
 * matter.
 */
static int
dbus_getnonblock(pcap_t *p)
{
	pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
	    "Non-blocking mode isn't supported for capturing on D-Bus");
	return (-1);
}

static int
dbus_setnonblock(pcap_t *p, int nonblock _U_)
{
	pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE,
	    "Non-blocking mode isn't supported for capturing on D-Bus");
	return (-1);
}

static int
dbus_activate(pcap_t *handle)
{
#define EAVESDROPPING_RULE "eavesdrop=true,"

static const char *rules[] = {
		EAVESDROPPING_RULE "type='signal'",
		EAVESDROPPING_RULE "type='method_call'",
		EAVESDROPPING_RULE "type='method_return'",
		EAVESDROPPING_RULE "type='error'",
	};

#define N_RULES sizeof(rules)/sizeof(rules[0])

struct pcap_dbus *handlep = handle->priv;
	const char *dev = handle->opt.device;

DBusError error = DBUS_ERROR_INIT;
	u_int i;

if (strcmp(dev, "dbus-system") == 0) {
		if (!(handlep->conn = dbus_bus_get(DBUS_BUS_SYSTEM, &error))) {
			pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Failed to get system bus: %s", error.message);
			dbus_error_free(&error);
			return PCAP_ERROR;
		}

} else if (strcmp(dev, "dbus-session") == 0) {
		if (!(handlep->conn = dbus_bus_get(DBUS_BUS_SESSION, &error))) {
			pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Failed to get session bus: %s", error.message);
			dbus_error_free(&error);
			return PCAP_ERROR;
		}

} else if (strncmp(dev, "dbus://", 7) == 0) {
		const char *addr = dev + 7;

if (!(handlep->conn = dbus_connection_open(addr, &error))) {
			pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Failed to open connection to: %s: %s", addr, error.message);
			dbus_error_free(&error);
			return PCAP_ERROR;
		}

if (!dbus_bus_register(handlep->conn, &error)) {
			pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Failed to register bus %s: %s\n", addr, error.message);
			dbus_error_free(&error);
			return PCAP_ERROR;
		}

} else {
		pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't get bus address from %s", handle->opt.device);
		return PCAP_ERROR;
	}

/* Initialize some components of the pcap structure. */
	handle->bufsize = 0;
	handle->offset = 0;
	handle->linktype = DLT_DBUS;
	handle->read_op = dbus_read;
	handle->inject_op = dbus_write;
	handle->setfilter_op = install_bpf_program; /* XXX, later add support for dbus_bus_add_match() */
	handle->setdirection_op = NULL;
	handle->set_datalink_op = NULL;      /* can't change data link type */
	handle->getnonblock_op = dbus_getnonblock;
	handle->setnonblock_op = dbus_setnonblock;
	handle->stats_op = dbus_stats;
	handle->cleanup_op = dbus_cleanup;

#ifndef _WIN32
	/*
	 * Unfortunately, trying to do a select()/poll()/epoll_wait()/
	 * kevent()/etc. on a D-Bus connection isn't a simple
	 * case of "give me an FD on which to wait".
	 *
	 * Apparently, you have to register "add watch", "remove watch",
	 * and "toggle watch" functions with
	 * dbus_connection_set_watch_functions(),
	 * keep a *set* of FDs, add to that set in the "add watch"
	 * function, subtract from it in the "remove watch" function,
	 * and either add to or subtract from that set in the "toggle
	 * watch" function, and do the wait on *all* of the FDs in the
	 * set.  (Yes, you need the "toggle watch" function, so that
	 * the main loop doesn't itself need to check for whether
	 * a given watch is enabled or disabled - most libpcap programs
	 * know nothing about D-Bus and shouldn't *have* to know anything
	 * about D-Bus other than how to decode D-Bus messages.)
	 *
	 * Implementing that would require considerable changes in
	 * the way libpcap exports "selectable FDs" to its client.
	 * Until that's done, we just say "you can't do that".
	 */
	handle->selectable_fd = handle->fd = -1;
#endif

if (handle->opt.rfmon) {
		/*
		 * Monitor mode doesn't apply to dbus connections.
		 */
		dbus_cleanup(handle);
		return PCAP_ERROR_RFMON_NOTSUP;
	}

/*
	 * Turn a negative snapshot value (invalid), a snapshot value of
	 * 0 (unspecified), or a value bigger than the normal maximum
	 * value, into the maximum message length for D-Bus (128MB).
	 */
	if (handle->snapshot <= 0 || handle->snapshot > 134217728)
		handle->snapshot = 134217728;

/* dbus_connection_set_max_message_size(handlep->conn, handle->snapshot); */
	if (handle->opt.buffer_size != 0)
		dbus_connection_set_max_received_size(handlep->conn, handle->opt.buffer_size);

for (i = 0; i < N_RULES; i++) {
		dbus_bus_add_match(handlep->conn, rules[i], &error);
		if (dbus_error_is_set(&error)) {
			dbus_error_free(&error);

/* try without eavesdrop */
			dbus_bus_add_match(handlep->conn, rules[i] + strlen(EAVESDROPPING_RULE), &error);
			if (dbus_error_is_set(&error)) {
				pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Failed to add bus match: %s\n", error.message);
				dbus_error_free(&error);
				dbus_cleanup(handle);
				return PCAP_ERROR;
			}
		}
	}

return 0;
}

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

if (strcmp(device, "dbus-system") &&
		strcmp(device, "dbus-session") &&
		strncmp(device, "dbus://", 7))
	{
		*is_ours = 0;
		return NULL;
	}

*is_ours = 1;
	p = pcap_create_common(ebuf, sizeof (struct pcap_dbus));
	if (p == NULL)
		return (NULL);

p->activate_op = dbus_activate;
	/*
	 * Set these up front, so that, even if our client tries
	 * to set non-blocking mode before we're activated, or
	 * query the state of non-blocking mode, they get an error,
	 * rather than having the non-blocking mode option set
	 * for use later.
	 */
	p->getnonblock_op = dbus_getnonblock;
	p->setnonblock_op = dbus_setnonblock;
	return (p);
}

int
dbus_findalldevs(pcap_if_list_t *devlistp, char *err_str)
{
	/*
	 * The notion of "connected" vs. "disconnected" doesn't apply.
	 * XXX - what about the notions of "up" and "running"?
	 */
	if (add_dev(devlistp, "dbus-system",
	    PCAP_IF_CONNECTION_STATUS_NOT_APPLICABLE, "D-Bus system bus",
	    err_str) == NULL)
		return -1;
	if (add_dev(devlistp, "dbus-session",
	    PCAP_IF_CONNECTION_STATUS_NOT_APPLICABLE, "D-Bus session bus",
	    err_str) == NULL)
		return -1;
	return 0;
}

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Editing: pcap-dbus.c

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