[lib] Translate comments, 72 col.
This commit is contained in:
Matteo Cypriani
parent
f33ab91187
commit
3d0300cc60
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@ -13,14 +13,17 @@ BOOL run = TRUE ;
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/* Convertit une adresse MAC en octets en une chaîne de caractères.
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* ¡ Il est nécessaire de libérer manuellement le retour de cette fonction !
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/*
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* Converts a MAC address from bytes to string.
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* /!\ You *must* manually free the returned string /!\
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*/
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char* mac_bytes_to_string(unsigned char *mac_binary)
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{
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char *ret = malloc(sizeof(char) * 18) ;
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sprintf(ret, "%02x:%02x:%02x:%02x:%02x:%02x", mac_binary[0], mac_binary[1], mac_binary[2], mac_binary[3], mac_binary[4], mac_binary[5]) ;
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sprintf(ret, "%02x:%02x:%02x:%02x:%02x:%02x",
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mac_binary[0], mac_binary[1], mac_binary[2],
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mac_binary[3], mac_binary[4], mac_binary[5]) ;
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ret[17] = '\0' ;
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return ret ;
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@ -28,10 +31,13 @@ char* mac_bytes_to_string(unsigned char *mac_binary)
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/* Convertit un identifiant de canal en son numéro (0 si la fréquence est erronée) */
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/*
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* Converts a IEEE 802.11 frequency into a channel number.
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* Returns 0 if the frequency does not correspond to an official channel.
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*/
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char frequency_to_channel(unsigned short channel)
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{
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char c = 0 ; // Résultat
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char c = 0 ; // Result
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switch (channel)
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{
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@ -84,7 +90,9 @@ char frequency_to_channel(unsigned short channel)
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/* Convertit une date au format struct timeval en une valeur entière en millisecondes, et retourne le résultat */
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/*
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* Converts a struct timeval date value into milliseconds.
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*/
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unsigned long long timeval_to_ms(struct timeval d)
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{
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return d.tv_sec * 1000 + d.tv_usec / 1000 ;
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@ -93,8 +101,8 @@ unsigned long long timeval_to_ms(struct timeval d)
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/*
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* Convertit une date sous forme de valeur entière en millisecondes,
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* en une struct timeval, et retourne cette structure.
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* Converts a date value in milliseconds into a struct timeval.
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*
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struct timeval ms_to_timeval(unsigned long long tms)
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{
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struct timeval d ;
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@ -106,7 +114,9 @@ struct timeval ms_to_timeval(unsigned long long tms)
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/* Retourne le temps (en millisecondes) écoulé entre deux dates */
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/*
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* Returns the time (in milliseconds) between two dates.
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*/
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unsigned long sub_date(struct timeval sup, struct timeval inf)
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{
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unsigned long sub = abs(timeval_to_ms(sup) - timeval_to_ms(inf)) ;
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@ -118,7 +128,10 @@ unsigned long sub_date(struct timeval sup, struct timeval inf)
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/* Compare deux adresses MAC : retourne TRUE si elles sont égales, FALSE sinon */
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/*
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* Compares two MAC addresses.
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* Returns TRUE if they are identical, FALSE otherwise.
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*/
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BOOL mac_cmp(unsigned char *mac1, unsigned char *mac2)
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{
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int i ;
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@ -130,81 +143,92 @@ BOOL mac_cmp(unsigned char *mac1, unsigned char *mac2)
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/* Crée une socket d'envoi UDP et retourne son descripteur.
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* Paramètres :
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* - server_address : l'adresse IP du serveur.
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* - server_port : le port d'écoute du serveur.
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* - server_description (paramètre résultat) : la structure dans laquelle sera enregistrée la description du serveur.
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* - client_description (paramètre résultat) : la structure dans laquelle sera enregistrée la description du client.
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/*
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* Creates a UDP transmission socket and returns its descriptor.
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* Parameters:
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* - server_address: the server IP address.
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* - server_port: the listening port on the server.
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* - server_description (in/out): the structure in which the server
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* description will be saved.
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* - client_description (in/out): the structure in which the client
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* description will be saved.
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*/
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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_sending_socket(char *server_address, int server_port,
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struct sockaddr_in *server_description,
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struct sockaddr_in * client_description)
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{
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int sockfd ; // Descripteur de la socket
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int sockfd ; // Socket descriptor
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/* Ceation de la socket UDP */
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/* Ceate the UDP socket */
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sockfd = socket(AF_INET, SOCK_DGRAM, 0) ;
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if (sockfd < 0)
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{
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perror("Échec de la création de la socket ") ;
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perror("UDP socket creation failed") ;
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return sockfd ;
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}
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/* Remise à zéro et initialisation de la structure du client */
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/* Initialise the client structure */
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bzero((char *) client_description, sizeof(*client_description)) ;
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client_description->sin_family = AF_INET ; // Socket INET
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client_description->sin_addr.s_addr = htonl(INADDR_ANY) ; // Toutes les connexions
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// client_description->sin_port = htons(0) ; // N'importe quel port (ne sert à rien a priori)
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client_description->sin_family = AF_INET ; // INET socket
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client_description->sin_addr.s_addr = htonl(INADDR_ANY) ;
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/* Remise à zéro et initialisation de la structure du serveur */
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bzero((char *) server_description, sizeof(*server_description)) ; // RÀZ
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server_description->sin_family = AF_INET ; // Socket INET
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server_description->sin_addr.s_addr = inet_addr(server_address) ; // Adresse du serveur
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server_description->sin_port = htons(server_port) ; // Port d'écoute du serveur
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/* Initialise the server structure */
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bzero((char *) server_description, sizeof(*server_description)) ;
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server_description->sin_family = AF_INET ; // INET socket
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// Server IP address:
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server_description->sin_addr.s_addr = inet_addr(server_address) ;
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// Listening port on the server:
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server_description->sin_port = htons(server_port) ;
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return sockfd ; // On retourne le descripteur de la socket créée
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return sockfd ;
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}
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/* Crée une socket d'écoute UDP et retourne son descripteur.
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* Paramètres :
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* - port est le port sur lequel écouter.
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/*
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* Creates a UDP reception socket and returns its descriptor.
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* Parameters:
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* - port: port on which the socket listens.
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*/
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int create_udp_listening_socket(int port)
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{
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int sockfd ; // Descripteur de la socket
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struct sockaddr_in server_description ; // Structure du serveur
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int ret = 0 ; // Valeur de retour
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int sockfd ; // Socket descriptor
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struct sockaddr_in server_description ; // Server structure
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int ret = 0 ; // Return value
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/* Création d'une socket UDP */
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/* Create the UDP socket */
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sockfd = socket(AF_INET, SOCK_DGRAM, 0) ;
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if (sockfd < 0)
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{
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perror("Échec de la création de la socket ") ;
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perror("UDP socket creation failed") ;
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return sockfd ;
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}
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/* Remise à zéro et initialisation de la structure du serveur */
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bzero((char *) &server_description, sizeof(server_description)) ; // RÀZ
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server_description.sin_family = AF_INET ; // Socket INET
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server_description.sin_addr.s_addr = htonl(INADDR_ANY) ; // Toutes les connexions sont acceptées
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server_description.sin_port = htons(port) ; // Port d'écoute
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/* Initialise the server structure */
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bzero((char *) &server_description, sizeof(server_description)) ;
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server_description.sin_family = AF_INET ; // INET socket
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// All the connections are accepted:
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server_description.sin_addr.s_addr = htonl(INADDR_ANY) ;
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server_description.sin_port = htons(port) ; // Listening port
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/* Réservation du port */
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ret = bind(sockfd, (struct sockaddr*) &server_description, sizeof(server_description)) ;
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/* Port reservation */
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ret = bind(sockfd, (struct sockaddr*) &server_description,
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sizeof(server_description)) ;
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if (ret < 0)
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{
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perror("Impossible de créer la socket (bind) ") ;
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perror("Cannot bind the UDP socket") ;
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(void) close(sockfd) ;
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return ret ;
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}
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return sockfd ; // On retourne le descripteur de la socket créée
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return sockfd ;
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}
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/* Bascule l'interface Wi-Fi "iface" en mode Monitor si elle n'y est pas déjà */
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/*
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* Switches the IEEE 802.11 interface 'iface' to Monitor mode.
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*/
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int iface_mode_monitor(char *iface)
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{
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struct iwreq wrq ;
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@ -236,7 +260,10 @@ int iface_mode_monitor(char *iface)
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/* Change le canal de l'interface Wi-Fi "iface" avec la valeur "channel" (numéro de 1 à 14) */
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/*
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* Sets the IEEE 802.11 channel of the interface 'iface'.
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* 'channel' must be an integer between 1 and 14.
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*/
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int iface_set_channel(char *iface, int channel)
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{
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struct iwreq wrq ;
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@ -248,7 +275,7 @@ int iface_set_channel(char *iface, int channel)
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if (ioctl(sockfd, SIOCSIWFREQ, &wrq) == -1)
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{
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perror("Erreur lors du changement de canal ") ;
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perror("Error setting the Wi-Fi channel") ;
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return ERR_SETTING_CHANNEL ;
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}
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@ -259,7 +286,10 @@ int iface_set_channel(char *iface, int channel)
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/* Fait varier le canal de l'interface Wi-Fi "iface" entre les canaux 4 et 11 */
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/*
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* Switches alternatively the Wi-Fi channel of the IEEE 802.11 interface
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* 'iface' to 4 or 11.
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*/
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int iface_channel_hop(char *iface)
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{
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unsigned short channel ;
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@ -273,34 +303,40 @@ int iface_channel_hop(char *iface)
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perror("Erreur lors de la lecture de la fréquence ") ;
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return ERR_READING_CHANNEL ;
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}
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channel = wrq.u.freq.m / 100000 ; // Un peu gruik : il vaudrait mieux utiliser iw_freq2float(), iw_freq_to_channel() et compagnie (cf. /usr/include/{iwlib.h,wireless.h}).
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// The following is not very clean: we should use iw_freq2float(),
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// iw_freq_to_channel() & friends, cf. /usr/include/{iwlib.h,wireless.h}.
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channel = wrq.u.freq.m / 100000 ;
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if (channel > 1000) // Si la valeur est en Hz,
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channel = frequency_to_channel(channel) ; // on la convertit en numéro de canal (avec notre fonction maison, toujours un peu gruik).
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if (channel > 1000) // If the value is in Hz, we convert it to a
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channel = frequency_to_channel(channel) ; // channel number
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// (with our own function, still not very clean).
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close(sockfd) ;
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/* Changement de canal */
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if (channel == 4) // Si le canal est déjà à 4,
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return iface_set_channel(iface, 11) ; // on le passe à 11 ;
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/* Switch the canal */
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if (channel == 4) // If channel is 4
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return iface_set_channel(iface, 11) ; // switch to 11 ;
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else
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return iface_set_channel(iface, 4) ; // sinon on le met à 4.
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return iface_set_channel(iface, 4) ; // else, set it to 4.
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}
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/* Gestionnaire de signal générique pour SIGINT */
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/*
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* Generic signal handler for SIGINT.
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*/
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void sigint_handler(int num)
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{
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if (num != SIGINT)
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{
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fprintf(stderr, "Erreur ! Gestionnaire de SIGINT appelé mais le signal n'est pas SIGINT.\n") ;
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fprintf(stderr, "Error! The SIGINT handler was called but the"
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" signal is not SIGINT.\n") ;
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exit(ERR_BAD_SIGNAL) ;
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}
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run = FALSE ;
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printf("\nSignal reçu : fin du programme.\n");
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printf("\nSignal received: end.\n");
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fflush(NULL) ;
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}
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@ -311,7 +347,8 @@ void sigterm_handler(int num)
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{
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if (num != SIGTERM)
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{
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fprintf(stderr, "Erreur ! Gestionnaire de SIGTERM appelé mais le signal n'est pas SIGINT.\n") ;
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fprintf(stderr, "Error! The SIGTERM handler was called but the"
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" signal is not SIGTERM.\n") ;
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exit(ERR_BAD_SIGNAL) ;
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}
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@ -51,61 +51,63 @@
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#define MOBILE_DEFAULT_PORT 9910
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/* Type booléen */
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/* Boolean type */
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typedef enum {FALSE, TRUE} BOOL ;
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#define BOOL_TO_STRING(B) ((B) ? "true" : "false")
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/* Type direction */
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/* Direction type */
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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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/* Message sent by the listener to the aggregator */
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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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unsigned char ap_mac_addr_bytes[6] ; // MAC of the listener
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unsigned char mobile_mac_addr_bytes[6] ; // MAC of the mobile involved
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unsigned char mobile_ip_addr_bytes[4] ; // IP of the mobile
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struct timeval request_time ; // Request ID (timestamp on the mobile)
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struct timeval start_time ; // Timestamp of arrival on the listener
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unsigned char antenna_signal_dbm ; // Signal strength measured by the listener
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/* Calibration data */
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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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DIRECTION direction ;
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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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unsigned char ap_mac_addr_bytes[6] ; // MAC of the listener
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unsigned char antenna_signal_dbm ; // Signal strength measured by the listener
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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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unsigned char mobile_mac_addr_bytes[6]; // MAC of the mobile
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struct timeval request_time; // Request ID (timestamp on the mobile)
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int nb_couples; // Number of (listener MAC;signal strength) couples
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} request;
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/* Hello message sent by the listener to the aggregator */
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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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} autocalibration_hello ;
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/* Message sent to the listener to order an emission */
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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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/* Positioning request types */
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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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/* Wi-Fi channel frequencies in 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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@ -122,35 +124,38 @@ typedef struct _autocalibration_order
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#define CHANNEL_14 2477
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/* Taille des en-têtes des paquets (en octets) */
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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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/* Types des paquets capturés (en-tête IEEE 802.11) */
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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) (((FC1) & FRAME_TYPE_DATA_MASK) == FRAME_TYPE_DATA_MASK)
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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) (((FC1) & FRAME_SUBTYPE_QOS_MASK) == FRAME_SUBTYPE_QOS_MASK)
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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) (((FC2) & FRAME_FROM_STA_MASK) != FRAME_FROM_STA_MASK)
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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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/* Position des champs fixes de l'en-tête radiotap (octets) */
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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
|
||||
#define RTAP_P_HLENGTH 2 // Header length
|
||||
#define RTAP_P_PRESENTFLAGS 4 // Present flags
|
||||
|
||||
|
||||
/* Longueur des champs de l'en-tête radiotap (octets) */
|
||||
/* Radiotap field lengths (in bytes) */
|
||||
#define RTAP_L_HREVISION 1 // Header revision
|
||||
#define RTAP_L_HPAD 1 // Header pad
|
||||
#define RTAP_L_HLENGTH 2 // Header length
|
||||
|
|
@ -171,15 +176,15 @@ typedef struct _autocalibration_order
|
|||
#define RTAP_L_ANTENNASIGNALDB 1 // SSI signal (dB)
|
||||
#define RTAP_L_ANTENNANOISEDB 1 // SSI noise (dB)
|
||||
#define RTAP_L_FCS 4 // Frame Check Sequence
|
||||
//#define RTAP_L_CHANNELP // Extended channel info (non implémenté)
|
||||
//#define RTAP_L_EXT // Extension aux Present flags (non implémenté)
|
||||
//#define RTAP_L_CHANNELP // Extended channel info (not implemented)
|
||||
//#define RTAP_L_EXT // Extension aux Present flags (not emplemented)
|
||||
|
||||
|
||||
/* Positions dans Present flags (et tableau 'check' des champs présents) */
|
||||
/* Positions in 'Present flags' (and present fields 'check' array) */
|
||||
#define RTAP_MACTS 0
|
||||
#define RTAP_FLAGS 1
|
||||
#define RTAP_RATE 2
|
||||
#define RTAP_CHANNEL 3 // ainsi que RTAP_CHANNELTYPE
|
||||
#define RTAP_CHANNEL 3 // and RTAP_CHANNELTYPE
|
||||
#define RTAP_FHSS 4
|
||||
#define RTAP_ANTENNASIGNALDBM 5
|
||||
#define RTAP_ANTENNANOISEDBM 6
|
||||
|
|
@ -195,11 +200,11 @@ typedef struct _autocalibration_order
|
|||
//#define RTAP_EXT 31
|
||||
|
||||
|
||||
/* Variables globales */
|
||||
/* Global variables */
|
||||
BOOL run ;
|
||||
|
||||
|
||||
/* Codes d'erreur des fonctions */
|
||||
/* Function error codes */
|
||||
#define ERR_SETTING_MODE 101
|
||||
#define ERR_SETTING_CHANNEL 102
|
||||
#define ERR_READING_CHANNEL 103
|
||||
|
|
@ -207,30 +212,34 @@ BOOL run ;
|
|||
#define ERR_BAD_SIGNAL 111
|
||||
|
||||
|
||||
/* En-têtes de fonctions */
|
||||
// Fonctions utilitaires
|
||||
/* Function headers */
|
||||
// Tool functions
|
||||
char* mac_bytes_to_string(unsigned char *mac_binary) ;
|
||||
char frequency_to_channel(unsigned short channel) ;
|
||||
unsigned long long timeval_to_ms(struct timeval date) ;
|
||||
unsigned long sub_date(struct timeval sup, struct timeval inf) ;
|
||||
BOOL mac_cmp(unsigned char *mac1, unsigned char *mac2) ;
|
||||
|
||||
// Réseau
|
||||
int create_udp_sending_socket(char *server_address, int server_port, struct sockaddr_in *server_description, struct sockaddr_in * client_description) ;
|
||||
// Network
|
||||
int create_udp_sending_socket(char *server_address, int server_port,
|
||||
struct sockaddr_in *server_description,
|
||||
struct sockaddr_in * client_description) ;
|
||||
int create_udp_listening_socket(int port) ;
|
||||
int iface_mode_monitor(char *iface) ;
|
||||
int iface_set_channel(char *iface, int channel) ;
|
||||
int iface_channel_hop(char *iface) ;
|
||||
|
||||
// Signaux
|
||||
// Signals
|
||||
void sigint_handler(int num) ;
|
||||
void sigterm_handler(int num) ;
|
||||
|
||||
|
||||
/* Macros */
|
||||
|
||||
/* Prend les flags de l'en-tête IEEE 802.11 en paramètre,
|
||||
* retourne 0 si le bit Retry est absent, ou une valeur positive s'il est présent.
|
||||
/*
|
||||
* Test if a IEEE 802.11 frame is a retry.
|
||||
* Input: IEEE 802.11 header flags.
|
||||
* Returns 0 if the Retry bit is absent, a positive value if present.
|
||||
*/
|
||||
#define IS_RETRY(IEEE80211_FLAGS) ((IEEE80211_FLAGS) & 0x08)
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue