470 lines
16 KiB
C
470 lines
16 KiB
C
/*
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* This file is part of the Owl Positioning System (OwlPS) project.
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* It is subject to the copyright notice and license terms in the
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* COPYRIGHT.t2t file found in the top-level directory of this
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* distribution and at
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* https://code.lm7.fr/mcy/owlps/src/master/COPYRIGHT.t2t
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* No part of the OwlPS Project, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms
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* contained in the COPYRIGHT.t2t file; the COPYRIGHT.t2t file must be
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* distributed along with this file, either separately or by replacing
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* this notice by the COPYRIGHT.t2t file's contents.
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*
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***********************************************************************
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*
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* This is the header file of OwlPS Listener.
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*/
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#ifndef _OWLPS_LISTENER_H_
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#define _OWLPS_LISTENER_H_
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#include <owlps-config.h>
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#include <owlps-listener-config.h>
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#ifdef OWLPS_LISTENER_KEEPS_MONITOR
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# ifndef OWLPS_LISTENER_USES_PTHREAD
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# error "The option OWLPS_LISTENER_KEEPS_MONITOR requires the option OWLPS_LISTENER_USES_PTHREAD"
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# endif // OWLPS_LISTENER_USES_PTHREAD
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#endif // OWLPS_LISTENER_KEEPS_MONITOR
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#include <owlps.h>
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#include <owlps-client.h>
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#include <stdio.h>
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#include <pcap.h>
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#include <sys/param.h>
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#include <rpc/types.h> // for MAXHOSTNAMELEN
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#ifdef __GLIBC__
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# include <endian.h>
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/* <endian.h> defines le*toh only in glibc >= 2.9. If we use an older
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* version of glibc, or another glibc-friendly libc (e.g. uClibc), we
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* must define them manually.
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*/
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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# ifndef le32toh
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# define le32toh(x) (x)
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# endif // le32toh
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# ifndef le16toh
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# define le16toh(x) (x)
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# endif // le16toh
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# elif __BYTE_ORDER == __BIG_ENDIAN
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# ifndef le32toh
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# include <byteswap.h>
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# define le32toh(x) bswap_32(x)
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# endif // le32toh
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# ifndef le16toh
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# include <byteswap.h>
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# define le16toh(x) bswap_16(x)
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# endif // le16toh
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# else // __BYTE_ORDER
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# error "This program does not handle strange architectures."
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# endif // __BYTE_ORDER
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/* Non-glibc systems (mostly BSDs at this point).
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* - OpenBSD 5.6 and higher defines le*toh in <endian.h>. Former versions
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* defined letoh* in <sys/types.h>.
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* - NetBSD, FreeBSD and DragonFly define le*toh in <sys/endian.h>.
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*/
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#else // __GLIBC__
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# if defined(OpenBSD)
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# if OpenBSD < 201411 // OpenBSD < 5.6
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# include <sys/types.h>
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# define le32toh letoh32
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# define le16toh letoh16
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# else // OpenBSD < 5.6
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# include <endian.h>
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# endif // OpenBSD < 5.6
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# else // OpenBSD
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# include <sys/endian.h>
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# endif // OpenBSD
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#endif // __GLIBC__
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/* Arguments & program configuration */
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#define OPTIONS "ADf:GhH:i:I:Kl:m:n:O:p:P:qr:R:t:T:vVw:" // getopt string
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#define DEFAULT_CONFIG_FILE OWL_CONFIG_PREFIX "/owlps-listener.conf"
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enum {MODE_ACTIVE = 'a', MODE_PASSIVE = 'p', MODE_MIXED = 'm'} ;
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#define DEFAULT_AUTOCALIBRATION_HELLO_DELAY 15 // seconds
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#define DEFAULT_AUTOCALIBRATION_DELAY 25 // milliseconds
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#define DEFAULT_AUTOCALIBRATION_NBPKT 20
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#define DEFAULT_AGGREGATION_HOST "localhost"
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/* Verbosity levels */
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#define VERBOSE_QUIET GET_VERBOSE() == 0
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#define VERBOSE_WARNING GET_VERBOSE() >= 1
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#define VERBOSE_INFO GET_VERBOSE() >= 2
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#define VERBOSE_CHATTERBOX GET_VERBOSE() >= 3
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#define VERBOSE_DISPLAY_CAPTURED GET_VERBOSE() >= 4
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#define MAX_VERBOSE_LEVEL 4
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/* Packet header sizes (in bytes) */
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#define IEEE80211_HEADER_SIZE_DATA 24 // Header size for a Data frame
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#define LLC_HEADER_SIZE 8
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/* IEEE 802.11 frame types */
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// Beacon (TODO: convert to mask)
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#define RAW_PACKET_TYPE_BEACON 0x80
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// Data frame
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#define FRAME_TYPE_DATA_MASK 0x08
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#define IS_DATA_FRAME(FC1) \
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(((FC1) & FRAME_TYPE_DATA_MASK) == FRAME_TYPE_DATA_MASK)
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// QoS Data frame
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#define FRAME_SUBTYPE_QOS_MASK 0x80
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#define DATA_FRAME_IS_QOS(FC1) \
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(((FC1) & FRAME_SUBTYPE_QOS_MASK) == FRAME_SUBTYPE_QOS_MASK)
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// To/From DS
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#define FRAME_FROM_STA_MASK 0x02
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#define IS_FRAME_FROM_STA(FC2) \
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(((FC2) & FRAME_FROM_STA_MASK) != FRAME_FROM_STA_MASK)
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/*
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* Test if a IEEE 802.11 frame is a retry.
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* Input: IEEE 802.11 header flags.
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* Returns 0 if the Retry bit is absent, a positive value if present.
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*/
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#define IS_RETRY(IEEE80211_FLAGS) ((IEEE80211_FLAGS) & 0x08)
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/* Positions of the radiotap header fixed fields (in bytes) */
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#define RTAP_P_HREVISION 0 // Header revision
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#define RTAP_P_HPAD 1 // Header pad
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#define RTAP_P_HLENGTH 2 // Header length
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#define RTAP_P_PRESENTFLAGS 4 // Present flags
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/* Lengths of the radiotap fixed fields (in bytes) */
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#define RTAP_L_HREVISION 1 // Header revision
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#define RTAP_L_HPAD 1 // Header pad
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#define RTAP_L_HLENGTH 2 // Header length
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#define RTAP_L_PRESENTFLAGS 4 // Present flags
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/* Bits of the radiotap "Present flags" field */
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#define RTAP_TSFT 0
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#define RTAP_FLAGS 1
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#define RTAP_RATE 2
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#define RTAP_CHANNEL 3 // Channel frequency and flags
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#define RTAP_FHSS 4 // FHSS hop set and hop pattern
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#define RTAP_ANTENNASIGNAL 5
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/* We use only the first Antenna Signal field, so we don't need to handle
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* the bits greater than RTAP_ANTENNASIGNAL, except for the Ext bit
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* (Extended Presence), to be able to jump after all the Present Flags
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* fields: */
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#define RTAP_EXT 31
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/* Lengths of the radiotap optional fields (in bytes) */
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#define RTAP_L_TSFT 8 // MAC timestamp (Time Synchronization Function Timer)
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#define RTAP_L_FLAGS 1 // Flags
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#define RTAP_L_RATE 1 // Data rate
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#define RTAP_L_CHANNEL 2 // Channel frequency
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#define RTAP_L_CHANNELFLAGS 2 // Channel flags (channel type)
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#define RTAP_L_FHSSHOPSET 1 // FHSS hop set
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#define RTAP_L_FHSSHOPPATTERN 1 // FHSS hop pattern
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#define RTAP_L_ANTENNASIGNAL 1 // Signal power at the antenna (dBm)
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/*
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* Tests if a bit (field) is present in the present flags field.
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*/
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#define FIELD_PRESENT(PRESENT_FLAGS, BIT) \
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(((PRESENT_FLAGS) >> (BIT)) & 1)
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/*
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* Returns the number of bytes needed to jump after a (radiotap) field of
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* length 'FIELD_LEN' that should sit at the position 'OFFSET' in the
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* buffer, taking into account alignment considerations.
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* Warning: do *not* pass an incremented number as FIELD_LEN (e.g.
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* field_len++ or ++field_len). This shouldn't normally be useful anyway.
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*/
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#define SKIP_FIELD(OFFSET, FIELD_LEN) \
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((FIELD_LEN) + nat_align((OFFSET), (FIELD_LEN)))
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/* Function headers */
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int initialise_configuration(const int argc, char *const *argv) ;
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int parse_config_file(const int argc, char *const *argv) ;
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int parse_command_line(const int argc, char *const *argv) ;
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int parse_main_options(const int argc, char *const *argv) ;
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#ifdef OWLPS_LISTENER_USES_PTHREAD
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int parse_calibration_data(const int argc, char *const *argv) ;
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#endif // OWLPS_LISTENER_USES_PTHREAD
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int check_configuration(void) ;
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void print_configuration(FILE *const stream) ;
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#ifdef OWLPS_LISTENER_KEEPS_MONITOR
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void* keep_mode_monitor(void *const iface) ;
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int iface_mode_monitor(const char *const iface) ;
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#endif // OWLPS_LISTENER_KEEPS_MONITOR
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int capture(void) ;
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void read_packet(const struct pcap_pkthdr *const pkt_header,
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const u_char *const pkt_data) ;
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void extract_calibration_data(const u_char *const pkt_data,
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owl_captured_request *const request) ;
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void extract_packet_numbers(const u_char *const pkt_data,
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owl_captured_request *const request) ;
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bool extract_radiotap_ss(const u_char *const pkt_data,
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owl_captured_request *const request) ;
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uint_fast16_t nat_align(const uint_fast16_t offset,
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const uint_fast8_t field_len) ;
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void display_captured_request(const owl_captured_request *const request,
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const struct pcap_pkthdr *const pkt_header) ;
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void get_mac_addr(const char *const iface,
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uint8_t mac_bytes[ETHER_ADDR_LEN]) ;
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void get_ip_addr(const char *const iface, char ip[INET_ADDRSTRLEN]) ;
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#ifdef OWLPS_LISTENER_USES_PTHREAD
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void* autocalibrate_hello(void *const NULL_value) ;
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void* autocalibrate(void *const NULL_value) ;
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void send_autocalibration_request(void) ;
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uint_fast16_t make_packet(uint8_t **const packet) ;
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#endif // OWLPS_LISTENER_USES_PTHREAD
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void sigint_handler(const int num) ;
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void sigterm_handler(const int num) ;
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void print_usage(void) ;
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void print_version(void) ;
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/* Macros to allow switching option handling with the libconfuse
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* structure and a home-made structure (if program is not compiled
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* with libconfuse support).
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*/
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/* libconfuse macros */
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#ifdef OWLPS_LISTENER_USES_CONFIG_FILE
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#define SET_MODE(MODE) \
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(cfg_setint(cfg, "mode", (MODE)))
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#define GET_MODE() \
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(cfg_getint(cfg, "mode"))
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#define SET_DAEMON() \
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(cfg_setbool(cfg, "daemon", cfg_true))
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#define UNSET_DAEMON() \
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(cfg_setbool(cfg, "daemon", cfg_false))
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#define GET_DAEMON() \
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(cfg_getbool(cfg, "daemon"))
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#define SET_AGGREGATION_HOST(HOST) \
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(cfg_setstr(cfg, "aggregation_host", (HOST)))
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#define GET_AGGREGATION_HOST() \
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(cfg_getstr(cfg, "aggregation_host"))
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#ifdef OWLPS_LISTENER_KEEPS_MONITOR
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#define SET_KEEP_MONITOR() \
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(cfg_setbool(cfg, "keep_monitor", cfg_true))
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#define UNSET_KEEP_MONITOR() \
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(cfg_setbool(cfg, "keep_monitor", cfg_false))
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#define GET_KEEP_MONITOR() \
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(cfg_getbool(cfg, "keep_monitor"))
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#endif // OWLPS_LISTENER_KEEPS_MONITOR
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#define SET_AGGREGATION_PORT(PORT) \
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(cfg_setint(cfg, "aggregation_port", (PORT)))
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#define GET_AGGREGATION_PORT() \
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(cfg_getint(cfg, "aggregation_port"))
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#define SET_LISTENING_PORT(PORT) \
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(cfg_setint(cfg, "listening_port", (PORT)))
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#define GET_LISTENING_PORT() \
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(cfg_getint(cfg, "listening_port"))
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#define SET_RTAP_IFACE(IFACE) \
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(cfg_setstr(cfg, "rtap_iface", (IFACE)))
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#define GET_RTAP_IFACE() \
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(cfg_getstr(cfg, "rtap_iface"))
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#define SET_PCAP_FILE(PATH) \
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(cfg_setstr(cfg, "pcap_file", (PATH)))
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#define GET_PCAP_FILE() \
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(cfg_getstr(cfg, "pcap_file"))
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#define SET_WIFI_IFACE(IFACE) \
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(cfg_setstr(cfg, "wifi_iface", (IFACE)))
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#define GET_WIFI_IFACE() \
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(cfg_getstr(cfg, "wifi_iface"))
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#ifdef OWLPS_LISTENER_USES_PTHREAD
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#define SET_AUTOCALIBRATION() \
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(cfg_setbool(cfg, "autocalibration", cfg_true))
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#define UNSET_AUTOCALIBRATION() \
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(cfg_setbool(cfg, "autocalibration", cfg_false))
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#define GET_AUTOCALIBRATION() \
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(cfg_getbool(cfg, "autocalibration"))
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#define SET_AUTOCALIBRATION_HOST(HOST) \
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(cfg_setstr(cfg, "autocalibration_host", (HOST)))
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#define GET_AUTOCALIBRATION_HOST() \
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(cfg_getstr(cfg, "autocalibration_host"))
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#define SET_AUTOCALIBRATION_REQUEST_PORT(PORT) \
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(cfg_setint(cfg, "autocalibration_request_port", (PORT)))
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#define GET_AUTOCALIBRATION_REQUEST_PORT() \
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(cfg_getint(cfg, "autocalibration_request_port"))
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#define SET_AUTOCALIBRATION_ORDER_PORT(PORT) \
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(cfg_setint(cfg, "autocalibration_order_port", (PORT)))
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#define GET_AUTOCALIBRATION_ORDER_PORT() \
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(cfg_getint(cfg, "autocalibration_order_port"))
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#define SET_AUTOCALIBRATION_HELLO_PORT(PORT) \
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(cfg_setint(cfg, "autocalibration_hello_port", (PORT)))
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#define GET_AUTOCALIBRATION_HELLO_PORT() \
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(cfg_getint(cfg, "autocalibration_hello_port"))
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#define SET_AUTOCALIBRATION_HELLO_DELAY(DELAY) \
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(cfg_setint(cfg, "autocalibration_hello_delay", (DELAY)))
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#define GET_AUTOCALIBRATION_HELLO_DELAY() \
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(cfg_getint(cfg, "autocalibration_hello_delay"))
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#define SET_AUTOCALIBRATION_DELAY(DELAY) \
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(cfg_setint(cfg, "autocalibration_delay", (DELAY)))
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#define GET_AUTOCALIBRATION_DELAY() \
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(cfg_getint(cfg, "autocalibration_delay"))
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#define SET_AUTOCALIBRATION_NBPKT(NBPKT) \
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(cfg_setint(cfg, "autocalibration_nb_packets", (NBPKT)))
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#define GET_AUTOCALIBRATION_NBPKT() \
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(cfg_getint(cfg, "autocalibration_nb_packets"))
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#define SET_MY_DIRECTION(DIRECTION) \
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(cfg_setint(cfg, "my_direction", (DIRECTION)))
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#define GET_MY_DIRECTION() \
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(cfg_getint(cfg, "my_direction"))
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#define SET_MY_POSITION_X(POSITION) \
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(cfg_setfloat(cfg, "my_position_x", (POSITION)))
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#define GET_MY_POSITION_X() \
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(cfg_getfloat(cfg, "my_position_x"))
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#define SET_MY_POSITION_Y(POSITION) \
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(cfg_setfloat(cfg, "my_position_y", (POSITION)))
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#define GET_MY_POSITION_Y() \
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(cfg_getfloat(cfg, "my_position_y"))
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#define SET_MY_POSITION_Z(POSITION) \
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(cfg_setfloat(cfg, "my_position_z", (POSITION)))
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#define GET_MY_POSITION_Z() \
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(cfg_getfloat(cfg, "my_position_z"))
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#endif // OWLPS_LISTENER_USES_PTHREAD
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#define INCREMENT_VERBOSE() \
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do { \
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long vlevel = cfg_getint(cfg, "verbose") ; \
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if (vlevel < MAX_VERBOSE_LEVEL) \
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cfg_setint(cfg, "verbose", vlevel + 1) ; \
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} while (0)
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#define RESET_VERBOSE() \
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(cfg_setint(cfg, "verbose", 0))
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#define GET_VERBOSE() \
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(cfg_getint(cfg, "verbose"))
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/* Home-made structure macros */
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#else // OWLPS_LISTENER_USES_CONFIG_FILE
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#define SET_DAEMON() \
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(options.daemon = true)
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#define UNSET_DAEMON() \
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(options.daemon = false)
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#define GET_DAEMON() \
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(options.daemon)
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#define SET_MODE(MODE) \
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(options.mode = (MODE))
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#define GET_MODE() \
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(options.mode)
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#define SET_AGGREGATION_HOST(HOST) \
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(strncpy(options.aggregation_host, (HOST), MAXHOSTNAMELEN))
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#define GET_AGGREGATION_HOST() \
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(options.aggregation_host)
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#ifdef OWLPS_LISTENER_KEEPS_MONITOR
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#define SET_KEEP_MONITOR() \
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(options.keep_monitor = true)
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#define UNSET_KEEP_MONITOR() \
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(options.keep_monitor = false)
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#define GET_KEEP_MONITOR() \
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(options.keep_monitor)
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#endif // OWLPS_LISTENER_KEEPS_MONITOR
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#define SET_AGGREGATION_PORT(PORT) \
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(options.aggregation_port = (PORT))
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#define GET_AGGREGATION_PORT() \
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(options.aggregation_port)
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#define SET_LISTENING_PORT(PORT) \
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(options.listening_port = (PORT))
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#define GET_LISTENING_PORT() \
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(options.listening_port)
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#define SET_RTAP_IFACE(IFACE) \
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(strncpy(options.rtap_iface, (IFACE), IFNAMSIZ+1))
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#define GET_RTAP_IFACE() \
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(options.rtap_iface)
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#define SET_PCAP_FILE(PATH) \
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do { \
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char *path = (PATH) ; \
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size_t path_len = strlen(path) ; \
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free(options.pcap_file) ; \
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options.pcap_file = malloc(path_len + 1) ; \
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assert(options.pcap_file) ; \
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strncpy(options.pcap_file, path, path_len) ; \
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} while (0)
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#define GET_PCAP_FILE() \
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(options.pcap_file)
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#define SET_WIFI_IFACE(IFACE) \
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(strncpy(options.wifi_iface, (IFACE), IFNAMSIZ+1))
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#define GET_WIFI_IFACE() \
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(options.wifi_iface)
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#ifdef OWLPS_LISTENER_USES_PTHREAD
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#define SET_AUTOCALIBRATION() \
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(options.autocalibration = true)
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#define UNSET_AUTOCALIBRATION() \
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(options.autocalibration = false)
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#define GET_AUTOCALIBRATION() \
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(options.autocalibration)
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#define SET_AUTOCALIBRATION_HOST(HOST) \
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(strncpy(options.autocalibration_host, (HOST), MAXHOSTNAMELEN))
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#define GET_AUTOCALIBRATION_HOST() \
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(options.autocalibration_host)
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#define SET_AUTOCALIBRATION_REQUEST_PORT(PORT) \
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(options.autocalibration_request_port = (PORT))
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#define GET_AUTOCALIBRATION_REQUEST_PORT() \
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(options.autocalibration_request_port)
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#define SET_AUTOCALIBRATION_ORDER_PORT(PORT) \
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(options.autocalibration_order_port = (PORT))
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|
#define GET_AUTOCALIBRATION_ORDER_PORT() \
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|
(options.autocalibration_order_port)
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|
#define SET_AUTOCALIBRATION_HELLO_PORT(PORT) \
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|
(options.autocalibration_hello_port = (PORT))
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|
#define GET_AUTOCALIBRATION_HELLO_PORT() \
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|
(options.autocalibration_hello_port)
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|
#define SET_AUTOCALIBRATION_HELLO_DELAY(DELAY) \
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|
(options.autocalibration_hello_delay = (DELAY))
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|
#define GET_AUTOCALIBRATION_HELLO_DELAY() \
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|
(options.autocalibration_hello_delay)
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|
#define SET_AUTOCALIBRATION_DELAY(DELAY) \
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|
(options.autocalibration_delay = (DELAY))
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|
#define GET_AUTOCALIBRATION_DELAY() \
|
|
(options.autocalibration_delay)
|
|
#define SET_AUTOCALIBRATION_NBPKT(NBPKT) \
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|
(options.autocalibration_nb_packets = (NBPKT))
|
|
#define GET_AUTOCALIBRATION_NBPKT() \
|
|
(options.autocalibration_nb_packets)
|
|
#define SET_MY_DIRECTION(DIRECTION) \
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|
(options.my_direction = (DIRECTION))
|
|
#define GET_MY_DIRECTION() \
|
|
(options.my_direction)
|
|
#define SET_MY_POSITION_X(POSITION) \
|
|
(options.my_position_x = (POSITION))
|
|
#define GET_MY_POSITION_X() \
|
|
(options.my_position_x)
|
|
#define SET_MY_POSITION_Y(POSITION) \
|
|
(options.my_position_y = (POSITION))
|
|
#define GET_MY_POSITION_Y() \
|
|
(options.my_position_y)
|
|
#define SET_MY_POSITION_Z(POSITION) \
|
|
(options.my_position_z = (POSITION))
|
|
#define GET_MY_POSITION_Z() \
|
|
(options.my_position_z)
|
|
#endif // OWLPS_LISTENER_USES_PTHREAD
|
|
|
|
#define INCREMENT_VERBOSE() \
|
|
if (options.verbose < MAX_VERBOSE_LEVEL) \
|
|
++options.verbose
|
|
#define RESET_VERBOSE() \
|
|
(options.verbose = 0)
|
|
#define GET_VERBOSE() \
|
|
(options.verbose)
|
|
#endif // OWLPS_LISTENER_USES_CONFIG_FILE
|
|
|
|
|
|
/* Returns true if we are capturing packet from a network interface, or
|
|
* false if we are reading from a pcap file.
|
|
*/
|
|
#define LIVE_CAPTURING \
|
|
(GET_RTAP_IFACE()[0] != '\0')
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|
|
|
|
|
#endif // _OWLPS_LISTENER_H_
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