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CHANGES
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CMakeLists.txt
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CONTRIBUTING.md
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CREDITS
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ChmodBPF
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INSTALL.md
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LICENSE
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Makefile-devel-adds
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Makefile.in
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README.md
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TODO
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VERSION
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Win32
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aclocal.m4
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arcnet.h
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atmuni31.h
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bpf_dump.c
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bpf_filter.c
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bpf_image.c
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chmod_bpf
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cmake
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cmake_uninstall.cmake.in
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cmakeconfig.h.in
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config.guess
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config.h.in
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config.sub
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configure
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configure.ac
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diag-control.h
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dlpisubs.c
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dlpisubs.h
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doc
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etherent.c
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ethertype.h
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extract.h
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fad-getad.c
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fad-gifc.c
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fad-glifc.c
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fmtutils.c
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fmtutils.h
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ftmacros.h
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gencode.c
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gencode.h
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grammar.y
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ieee80211.h
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install-sh
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lbl
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libpcap.pc.in
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llc.h
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missing
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mkdep
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msdos
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nametoaddr.c
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nametoaddr.h
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nlpid.h
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nomkdep
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optimize.c
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optimize.h
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org.tcpdump.chmod_bpf.plist
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pcap
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pcap-bpf.c
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pcap-bpf.h
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pcap-bt-linux.c
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pcap-bt-linux.h
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pcap-bt-monitor-linux.c
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pcap-bt-monitor-linux.h
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pcap-common.c
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pcap-common.h
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pcap-config.1
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pcap-config.in
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pcap-dag.c
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pcap-dag.h
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pcap-dbus.c
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pcap-dbus.h
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pcap-dll.rc
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pcap-dlpi.c
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pcap-dos.c
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pcap-dos.h
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pcap-enet.c
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pcap-filter.manmisc.in
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pcap-int.h
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pcap-libdlpi.c
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pcap-linktype.manmisc.in
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pcap-linux.c
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pcap-namedb.h
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pcap-netfilter-linux.c
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pcap-netfilter-linux.h
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pcap-netmap.c
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pcap-netmap.h
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pcap-new.c
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pcap-nit.c
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pcap-npf.c
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pcap-null.c
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pcap-pf.c
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pcap-rdmasniff.c
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pcap-rdmasniff.h
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pcap-rpcap-int.h
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pcap-rpcap.c
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pcap-rpcap.h
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pcap-savefile.manfile.in
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pcap-septel.c
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pcap-septel.h
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pcap-sita.c
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pcap-sita.h
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pcap-sita.html
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pcap-snf.c
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pcap-snf.h
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pcap-snit.c
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pcap-snoop.c
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pcap-tc.c
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pcap-tc.h
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pcap-tstamp.manmisc.in
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pcap-types.h
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pcap-usb-linux.c
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pcap-usb-linux.h
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pcap.3pcap.in
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pcap.c
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pcap.h
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pcap_activate.3pcap
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pcap_breakloop.3pcap
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pcap_can_set_rfmon.3pcap
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pcap_close.3pcap
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pcap_compile.3pcap.in
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pcap_create.3pcap
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pcap_datalink.3pcap.in
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pcap_datalink_name_to_val.3pcap
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pcap_datalink_val_to_name.3pcap
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pcap_dump.3pcap
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pcap_dump_close.3pcap
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pcap_dump_file.3pcap
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pcap_dump_flush.3pcap
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pcap_dump_ftell.3pcap
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pcap_dump_open.3pcap.in
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pcap_file.3pcap
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pcap_fileno.3pcap
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pcap_findalldevs.3pcap
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pcap_freecode.3pcap
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pcap_get_required_select_timeout.3pcap
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pcap_get_selectable_fd.3pcap
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pcap_get_tstamp_precision.3pcap.in
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pcap_geterr.3pcap
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pcap_inject.3pcap
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pcap_is_swapped.3pcap
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pcap_lib_version.3pcap
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pcap_list_datalinks.3pcap.in
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pcap_list_tstamp_types.3pcap.in
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pcap_lookupdev.3pcap
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pcap_lookupnet.3pcap
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pcap_loop.3pcap
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pcap_major_version.3pcap
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pcap_next_ex.3pcap
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pcap_offline_filter.3pcap
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pcap_open_dead.3pcap.in
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pcap_open_live.3pcap
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pcap_open_offline.3pcap.in
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pcap_set_buffer_size.3pcap
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pcap_set_datalink.3pcap
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pcap_set_immediate_mode.3pcap.in
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pcap_set_promisc.3pcap
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pcap_set_protocol_linux.3pcap
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pcap_set_rfmon.3pcap
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pcap_set_snaplen.3pcap
(1.74 KB)
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pcap_set_timeout.3pcap
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pcap_set_tstamp_precision.3pcap.in
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pcap_set_tstamp_type.3pcap.in
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pcap_setdirection.3pcap
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pcap_setfilter.3pcap
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pcap_setnonblock.3pcap
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pcap_snapshot.3pcap
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pcap_stats.3pcap
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pcap_statustostr.3pcap
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pcap_strerror.3pcap
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pcap_tstamp_type_name_to_val.3pcap
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pcap_tstamp_type_val_to_name.3pcap
(1.99 KB)
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portability.h
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ppp.h
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rpcap-protocol.c
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rpcap-protocol.h
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rpcapd
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savefile.c
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scanner.l
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sf-pcap.c
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sf-pcap.h
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sf-pcapng.c
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sf-pcapng.h
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sockutils.c
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sockutils.h
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sunatmpos.h
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testprogs
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tests
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varattrs.h
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Editing: pcap-bt-monitor-linux.c
/* * Copyright (c) 2014 Michal Labedzki for Tieto Corporation * 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 <errno.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <bluetooth/bluetooth.h> #include <bluetooth/hci.h> #include "pcap/bluetooth.h" #include "pcap-int.h" #include "pcap-bt-monitor-linux.h" #define BT_CONTROL_SIZE 32 #define INTERFACE_NAME "bluetooth-monitor" /* * Fields and alignment must match the declaration in the Linux kernel 3.4+. * See struct hci_mon_hdr in include/net/bluetooth/hci_mon.h. */ struct hci_mon_hdr { uint16_t opcode; uint16_t index; uint16_t len; } __attribute__((packed)); int bt_monitor_findalldevs(pcap_if_list_t *devlistp, char *err_str) { int ret = 0; /* * Bluetooth is a wireless technology. * * This is a device to monitor all Bluetooth interfaces, so * there's no notion of "connected" or "disconnected", any * more than there's a notion of "connected" or "disconnected" * for the "any" device. */ if (add_dev(devlistp, INTERFACE_NAME, PCAP_IF_WIRELESS|PCAP_IF_CONNECTION_STATUS_NOT_APPLICABLE, "Bluetooth Linux Monitor", err_str) == NULL) { ret = -1; } return ret; } static int bt_monitor_read(pcap_t *handle, int max_packets _U_, pcap_handler callback, u_char *user) { struct cmsghdr *cmsg; struct msghdr msg; struct iovec iv[2]; ssize_t ret; struct pcap_pkthdr pkth; pcap_bluetooth_linux_monitor_header *bthdr; u_char *pktd; struct hci_mon_hdr hdr; pktd = (u_char *)handle->buffer + BT_CONTROL_SIZE; bthdr = (pcap_bluetooth_linux_monitor_header*)(void *)pktd; iv[0].iov_base = &hdr; iv[0].iov_len = sizeof(hdr); iv[1].iov_base = pktd + sizeof(pcap_bluetooth_linux_monitor_header); iv[1].iov_len = handle->snapshot; memset(&pkth.ts, 0, sizeof(pkth.ts)); memset(&msg, 0, sizeof(msg)); msg.msg_iov = iv; msg.msg_iovlen = 2; msg.msg_control = handle->buffer; msg.msg_controllen = BT_CONTROL_SIZE; do { ret = recvmsg(handle->fd, &msg, 0); if (handle->break_loop) { handle->break_loop = 0; return -2; } } while ((ret == -1) && (errno == EINTR)); if (ret < 0) { pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE, errno, "Can't receive packet"); return -1; } pkth.caplen = ret - sizeof(hdr) + sizeof(pcap_bluetooth_linux_monitor_header); pkth.len = pkth.caplen; for (cmsg = CMSG_FIRSTHDR(&msg); cmsg != NULL; cmsg = CMSG_NXTHDR(&msg, cmsg)) { if (cmsg->cmsg_level != SOL_SOCKET) continue; if (cmsg->cmsg_type == SCM_TIMESTAMP) { memcpy(&pkth.ts, CMSG_DATA(cmsg), sizeof(pkth.ts)); } } bthdr->adapter_id = htons(hdr.index); bthdr->opcode = htons(hdr.opcode); if (handle->fcode.bf_insns == NULL || bpf_filter(handle->fcode.bf_insns, pktd, pkth.len, pkth.caplen)) { callback(user, &pkth, pktd); return 1; } return 0; /* didn't pass filter */ } static int bt_monitor_inject(pcap_t *handle, const void *buf _U_, size_t size _U_) { pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Packet injection is not supported yet on Bluetooth monitor devices"); return -1; } static int bt_monitor_setdirection(pcap_t *p, pcap_direction_t d) { p->direction = d; return 0; } static int bt_monitor_stats(pcap_t *handle _U_, struct pcap_stat *stats) { stats->ps_recv = 0; stats->ps_drop = 0; stats->ps_ifdrop = 0; return 0; } static int bt_monitor_activate(pcap_t* handle) { struct sockaddr_hci addr; int err = PCAP_ERROR; int opt; if (handle->opt.rfmon) { /* monitor mode doesn't apply here */ 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 allowed value. * * If some application really *needs* a bigger snapshot * length, we should just increase MAXIMUM_SNAPLEN. */ if (handle->snapshot <= 0 || handle->snapshot > MAXIMUM_SNAPLEN) handle->snapshot = MAXIMUM_SNAPLEN; handle->bufsize = BT_CONTROL_SIZE + sizeof(pcap_bluetooth_linux_monitor_header) + handle->snapshot; handle->linktype = DLT_BLUETOOTH_LINUX_MONITOR; handle->read_op = bt_monitor_read; handle->inject_op = bt_monitor_inject; handle->setfilter_op = install_bpf_program; /* no kernel filtering */ handle->setdirection_op = bt_monitor_setdirection; handle->set_datalink_op = NULL; /* can't change data link type */ handle->getnonblock_op = pcap_getnonblock_fd; handle->setnonblock_op = pcap_setnonblock_fd; handle->stats_op = bt_monitor_stats; handle->fd = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI); if (handle->fd < 0) { pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE, errno, "Can't create raw socket"); return PCAP_ERROR; } handle->buffer = malloc(handle->bufsize); if (!handle->buffer) { pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE, errno, "Can't allocate dump buffer"); goto close_fail; } /* Bind socket to the HCI device */ addr.hci_family = AF_BLUETOOTH; addr.hci_dev = HCI_DEV_NONE; addr.hci_channel = HCI_CHANNEL_MONITOR; if (bind(handle->fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE, errno, "Can't attach to interface"); goto close_fail; } opt = 1; if (setsockopt(handle->fd, SOL_SOCKET, SO_TIMESTAMP, &opt, sizeof(opt)) < 0) { pcap_fmt_errmsg_for_errno(handle->errbuf, PCAP_ERRBUF_SIZE, errno, "Can't enable time stamp"); goto close_fail; } handle->selectable_fd = handle->fd; return 0; close_fail: pcap_cleanup_live_common(handle); return err; } pcap_t * bt_monitor_create(const char *device, char *ebuf, int *is_ours) { pcap_t *p; const char *cp; cp = strrchr(device, '/'); if (cp == NULL) cp = device; if (strcmp(cp, INTERFACE_NAME) != 0) { *is_ours = 0; return NULL; } *is_ours = 1; p = pcap_create_common(ebuf, 0); if (p == NULL) return NULL; p->activate_op = bt_monitor_activate; return p; }
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