225 lines
6.4 KiB
C
225 lines
6.4 KiB
C
/*
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* This file is part of the rtap localisation project.
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*/
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#ifndef _LIBOWLPS_H_
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#define _LIBOWLPS_H_
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <pthread.h>
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#include <sys/time.h>
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#include <time.h>
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#include <sys/types.h>
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#include <math.h>
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#include <signal.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <net/if.h>
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#include <sys/ioctl.h>
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#include <iwlib.h>
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#include <wireless.h>
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// Port on which the positioning request is sent by the mobile:
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#define LOC_REQUEST_DEFAULT_PORT 9900
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// Port on which listeners and aggregator communicate:
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#define AGGREGATE_DEFAULT_PORT 9901
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// Port on which aggregator and positioning server communicate:
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#define POSITIONER_DEFAULT_PORT 9902
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// Port on which listener listens for order from aggregator:
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#define LISTENER_DEFAULT_PORT 9903
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#define DEFAULT_AUTOCALIBRATION_PORT 9904
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// Port on which the mobile listens for its position:
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#define MOBILE_DEFAULT_PORT 9910
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/* Type booléen */
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typedef enum {FALSE, TRUE} BOOL ;
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/* Type direction */
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typedef enum {NORTH = 1, EAST, SOUTH, WEST} DIRECTION ;
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/* Message envoyé par l'AP à l'agrégateur */
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typedef struct _couple_message
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{
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unsigned char ap_mac_addr_bytes[6] ; // Adresse MAC de l'AP émetteur de l'info en octets
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unsigned char mobile_mac_addr_bytes[6] ; // Adresse MAC du mobile en octets
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unsigned char mobile_ip_addr_bytes[4] ; // Adresse IP du mobile en octets
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struct timeval request_time ; // Identifiant du paquet = date sur le client
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struct timeval start_time ; // Heure d'arrivée du paquet sur l'AP
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unsigned char antenna_signal_dbm ; // Puissance du signal reçu par l'AP du mobile
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/* Données pour la calibration */
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float x_position ;
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float y_position ;
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float z_position ;
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DIRECTION direction ; // Orientation de la demande de localisation
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} couple_message ;
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typedef struct _couple_info
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{
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unsigned char ap_mac_addr_bytes[6] ; // Adresse MAC de l'AP
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unsigned char antenna_signal_dbm ; // Puissance du signal reçu par l'AP
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} couple_info ;
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typedef struct _request
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{
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unsigned char mobile_mac_addr_bytes[6]; //Adresse MAC du mobile
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struct timeval request_time; // Date sur le client
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int nb_couples; // Nombre couples (MAC AP;Puissance)
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} request;
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typedef struct _autocalibration_hello
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{
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unsigned char ap_mac_addr_bytes[6];
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char ap_ip_addr[16] ;
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} autocalibration_hello ;
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typedef struct _autocalibration_order
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{
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enum {AUTOCALIBRATION_ORDER_SEND = 1} order ;
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} autocalibration_order ;
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/* Types de demandes de localisation */
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#define PACKET_TYPE_NORMAL 0
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#define PACKET_TYPE_CALIBRATION 1
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#define PACKET_TYPE_AUTOCALIBRATION 2
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/* Fréquences des canaux Wi-Fi en Hz */
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#define CHANNEL_1 2412
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#define CHANNEL_2 2417
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#define CHANNEL_3 2422
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#define CHANNEL_4 2427
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#define CHANNEL_5 2432
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#define CHANNEL_6 2437
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#define CHANNEL_7 2442
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#define CHANNEL_8 2447
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#define CHANNEL_9 2452
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#define CHANNEL_10 2457
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#define CHANNEL_11 2462
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#define CHANNEL_12 2467
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#define CHANNEL_13 2472
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#define CHANNEL_14 2477
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/* Taille des en-têtes des paquets (en octets) */
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#define IEEE80211_HEADER_SIZE 24
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#define LLC_HEADER_SIZE 8
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/* Types des paquets capturés (en-tête IEEE 802.11) */
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#define RAW_PACKET_TYPE_BEACON 0x80
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#define RAW_PACKET_TYPE_DATA 0x08
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/* Position des champs fixes de l'en-tête radiotap (octets) */
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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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/* Longueur des champs de l'en-tête radiotap (octets) */
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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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#define RTAP_L_MACTS 8 // MAC timestamp (Time Synchronization Function Timer)
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#define RTAP_L_FLAGS 1 // autre champ de 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_CHANNELTYPE 2 // Channel type
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#define RTAP_L_ANTENNASIGNALDBM 1 // SSI signal (dBm)
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#define RTAP_L_ANTENNANOISEDBM 1 // SSI noise (dBm)
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#define RTAP_L_ANTENNA 1 // Antenna number
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#define RTAP_L_FHSS 2 // Hop set and pattern for Frequency-Hopping Spread Spectrum
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#define RTAP_L_LOCKQUALITY 2 // Signal quality
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#define RTAP_L_TXATTENUATION 2 // Transmit power from max power
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#define RTAP_L_TXATTENUATIONDB 2 // Idem (dB)
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#define RTAP_L_TXATTENUATIONDBM 1 // Idem (dBm)
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#define RTAP_L_ANTENNASIGNALDB 1 // SSI signal (dB)
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#define RTAP_L_ANTENNANOISEDB 1 // SSI noise (dB)
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#define RTAP_L_FCS 4 // Frame Check Sequence
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//#define RTAP_L_CHANNELP // Extended channel info (non implémenté)
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//#define RTAP_L_EXT // Extension aux Present flags (non implémenté)
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/* Positions dans Present flags (et tableau 'check' des champs présents) */
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#define RTAP_MACTS 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 // ainsi que RTAP_CHANNELTYPE
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#define RTAP_FHSS 4
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#define RTAP_ANTENNASIGNALDBM 5
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#define RTAP_ANTENNANOISEDBM 6
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#define RTAP_LOCKQUALITY 7
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#define RTAP_TXATTENUATION 8
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#define RTAP_TXATTENUATIONDB 9
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#define RTAP_TXATTENUATIONDBM 10
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#define RTAP_ANTENNA 11
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#define RTAP_ANTENNASIGNALDB 12
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#define RTAP_ANTENNANOISEDB 13
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#define RTAP_FCS 14
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//#define RTAP_CHANNELP 18
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//#define RTAP_EXT 31
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/* Variables globales */
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BOOL run ;
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/* Codes d'erreur des fonctions */
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#define ERR_SETTING_MODE 101
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#define ERR_SETTING_CHANNEL 102
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#define ERR_READING_CHANNEL 103
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#define ERR_READING_MODE 104
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#define ERR_BAD_SIGNAL 111
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/* En-têtes de fonctions */
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// Fonctions utilitaires
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char* mac_bytes_to_string(unsigned char *mac_binary) ;
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char frequency_to_channel(unsigned short channel) ;
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unsigned long long timeval_to_ms(struct timeval date) ;
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unsigned long sub_date(struct timeval sup, struct timeval inf) ;
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BOOL mac_cmp(unsigned char *mac1, unsigned char *mac2) ;
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// Réseau
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int create_udp_sending_socket(char *server_address, int server_port, struct sockaddr_in *server_description, struct sockaddr_in * client_description) ;
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int create_udp_listening_socket(int port) ;
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int iface_mode_monitor(char *iface) ;
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int iface_set_channel(char *iface, int channel) ;
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int iface_channel_hop(char *iface) ;
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// Signaux
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void sigint_handler(int num) ;
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void sigterm_handler(int num) ;
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/* Macros */
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/* Prend les flags de l'en-tête IEEE 802.11 en paramètre,
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* retourne 0 si le bit Retry est absent, ou une valeur positive s'il est présent.
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*/
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#define IS_RETRY(IEEE80211_FLAGS) ((IEEE80211_FLAGS) & 0x08)
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#endif // _LIBOWLPS_H_
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