mirror of
https://github.com/berlin-open-wireless-lab/DAWN.git
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88e5d6050a
memory auditing: refined auditing code and use in main code hearing map: fixed bug causing it not be be built correctly datastorage: fixed memory leak from linked list handling
327 lines
9.8 KiB
C
327 lines
9.8 KiB
C
#ifndef __DAWN_DATASTORAGE_H
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#define __DAWN_DATASTORAGE_H
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#include <pthread.h>
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#include <stdint.h>
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#include <time.h>
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#include <limits.h>
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#include "mac_utils.h"
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#include "utils.h"
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// Core data storage array sizes
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#define ARRAY_AP_LEN 100
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#define ARRAY_CLIENT_LEN 300
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#define PROBE_ARRAY_LEN 1000
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#define DENY_REQ_ARRAY_LEN 100
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/* Mac */
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// ---------------- Defines -------------------
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#define MAC_LIST_LENGTH 100
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// ---------------- Global variables ----------------
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extern struct mac_entry_s *mac_set;
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struct mac_entry_s {
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struct mac_entry_s* next_mac;
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struct dawn_mac mac;
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};
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// ---------------- Functions ----------
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void insert_macs_from_file();
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int insert_to_maclist(struct dawn_mac mac);
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int mac_in_maclist(struct dawn_mac mac);
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struct mac_entry_s* insert_to_mac_array(struct mac_entry_s* entry, struct mac_entry_s** insert_pos);
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void mac_array_delete(struct mac_entry_s* entry);
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// ---------------- Global variables ----------------
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/*** Metrics and configuration data ***/
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// ---------------- Structs ----------------
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struct probe_metric_s {
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int ap_weight; // TODO: Never evaluated?
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int ht_support; // eval_probe_metric()()
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int vht_support; // eval_probe_metric()()
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int no_ht_support; // eval_probe_metric()()
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int no_vht_support; // eval_probe_metric()()
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int rssi; // eval_probe_metric()()
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int low_rssi; // eval_probe_metric()()
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int freq; // eval_probe_metric()()
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int chan_util; // eval_probe_metric()()
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int max_chan_util; // eval_probe_metric()()
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int rssi_val; // eval_probe_metric()()
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int low_rssi_val; // eval_probe_metric()()
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int chan_util_val; // eval_probe_metric()()
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int max_chan_util_val; // eval_probe_metric()()
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int min_probe_count;
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int bandwidth_threshold; // kick_clients()
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int use_station_count; // better_ap_available()
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int max_station_diff; // compare_station_count() <- better_ap_available()
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int eval_probe_req;
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int eval_auth_req;
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int eval_assoc_req;
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int deny_auth_reason;
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int deny_assoc_reason;
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int use_driver_recog;
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int min_kick_count; // kick_clients()
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int chan_util_avg_period;
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int set_hostapd_nr;
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int kicking;
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int op_class;
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int duration;
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int mode;
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int scan_channel;
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};
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struct time_config_s {
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time_t update_client;
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time_t remove_client;
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time_t remove_probe;
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time_t remove_ap;
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time_t update_hostapd;
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time_t update_tcp_con;
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time_t denied_req_threshold;
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time_t update_chan_util;
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time_t update_beacon_reports;
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};
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#define MAX_IP_LENGTH 46
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#define MAX_KEY_LENGTH 65
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struct network_config_s {
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char broadcast_ip[MAX_IP_LENGTH];
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int broadcast_port;
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int tcp_port;
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int network_option;
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char shared_key[MAX_KEY_LENGTH];
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char iv[MAX_KEY_LENGTH];
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int use_symm_enc;
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int collision_domain;
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int bandwidth;
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};
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extern struct network_config_s network_config;
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extern struct time_config_s timeout_config;
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extern struct probe_metric_s dawn_metric;
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/*** Core DAWN data structures for tracking network devices and status ***/
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// Define this to remove printing / reporing of fields, and hence observe
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// which fields are evaluated in use at compile time.
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// #define DAWN_NO_OUTPUT
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// TODO notes:
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// Never used? = No code reference
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// Never evaluated? = Set and passed in ubus, etc but never evaluated for outcomes
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/* Probe, Auth, Assoc */
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// ---------------- Structs ----------------
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typedef struct probe_entry_s {
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struct probe_entry_s* next_probe;
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struct probe_entry_s* next_probe_skip;
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struct dawn_mac client_addr;
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struct dawn_mac bssid_addr;
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struct dawn_mac target_addr; // TODO: Never evaluated?
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uint32_t signal; // eval_probe_metric()
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uint32_t freq; // eval_probe_metric()
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uint8_t ht_capabilities; // eval_probe_metric()
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uint8_t vht_capabilities; // eval_probe_metric()
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time_t time; // remove_old...entries
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int counter;
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#ifndef DAWN_NO_OUTPUT
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int deny_counter; // TODO: Never used?
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uint8_t max_supp_datarate; // TODO: Never used?
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uint8_t min_supp_datarate; // TODO: Never used?
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#endif
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uint32_t rcpi;
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uint32_t rsni;
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} probe_entry;
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//struct probe_entry_s {
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// struct dawn_mac client_addr;
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// struct dawn_mac bssid_addr;
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// struct probe_entry_s* entry;
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//};
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typedef struct auth_entry_s {
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struct auth_entry_s* next_auth;
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struct dawn_mac bssid_addr;
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struct dawn_mac client_addr;
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struct dawn_mac target_addr; // TODO: Never evaluated?
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uint32_t signal; // TODO: Never evaluated?
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uint32_t freq; // TODO: Never evaluated?
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time_t time; // Never used for removal?
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int counter;
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} auth_entry;
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typedef struct hostapd_notify_entry_s {
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struct dawn_mac bssid_addr;
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struct dawn_mac client_addr;
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} hostapd_notify_entry;
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typedef struct auth_entry_s assoc_entry;
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// ---------------- Defines ----------------
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#define SSID_MAX_LEN 32
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#define NEIGHBOR_REPORT_LEN 200
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// ---------------- Global variables ----------------
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extern struct auth_entry_s *denied_req_set;
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extern pthread_mutex_t denied_array_mutex;
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extern struct probe_entry_s *probe_set;
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extern pthread_mutex_t probe_array_mutex;
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/* AP, Client */
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#define SIGNATURE_LEN 1024
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#define MAX_INTERFACE_NAME 64
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// ---------------- Structs ----------------
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// Testing only: Removes the ability to find clients via secondary search, hence replicates
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// the pre-optimisation behaviour of only scanning the BSSID+MAC orderd list
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//#define DAWN_CLIENT_SCAN_BC_ONLY
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typedef struct client_s {
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struct client_s* next_entry_bc;
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struct client_s* next_skip_entry_bc;
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#ifndef DAWN_CLIENT_SCAN_BC_ONLY
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struct client_s* next_entry_c;
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#endif
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struct dawn_mac bssid_addr;
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struct dawn_mac client_addr;
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char signature[SIGNATURE_LEN]; // TODO: Never evaluated?
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uint8_t ht_supported; // TODO: Never evaluated?
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uint8_t vht_supported; // TODO: Never evaluated?
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uint32_t freq; // TODO: Never evaluated?
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uint8_t auth; // TODO: Never evaluated?
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uint8_t assoc; // TODO: Never evaluated?
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uint8_t authorized; // TODO: Never evaluated?
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uint8_t preauth; // TODO: Never evaluated?
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uint8_t wds; // TODO: Never evaluated?
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uint8_t wmm; // TODO: Never evaluated?
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uint8_t ht; // TODO: Never evaluated?
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uint8_t vht; // TODO: Never evaluated?
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uint8_t wps; // TODO: Never evaluated?
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uint8_t mfp; // TODO: Never evaluated?
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time_t time; // remove_old...entries
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uint32_t aid; // TODO: Never evaluated?
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uint32_t kick_count; // kick_clients()
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uint8_t rrm_enabled_capa; //the first byte is enough
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} client;
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typedef struct ap_s {
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struct ap_s* next_ap;
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struct dawn_mac bssid_addr;
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uint32_t freq; // TODO: Never evaluated?
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uint8_t ht_support; // eval_probe_metric()
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uint8_t vht_support; // eval_probe_metric()
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uint32_t channel_utilization; // eval_probe_metric()
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time_t time; // remove_old...entries
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uint32_t station_count; // compare_station_count() <- better_ap_available()
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uint8_t ssid[SSID_MAX_LEN]; // compare_sid() < -better_ap_available()
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char neighbor_report[NEIGHBOR_REPORT_LEN];
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uint32_t collision_domain; // TODO: ap_get_collision_count() never evaluated?
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uint32_t bandwidth; // TODO: Never evaluated?
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uint32_t ap_weight; // eval_probe_metric()
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char iface[MAX_INTERFACE_NAME];
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char hostname[HOST_NAME_MAX];
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} ap;
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// ---------------- Defines ----------------
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#define TIME_THRESHOLD_AP 30
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#define TIME_THRESHOLD_CLIENT 30
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#define TIME_THRESHOLD_CLIENT_UPDATE 10
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#define TIME_THRESHOLD_CLIENT_KICK 60
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// ---------------- Global variables ----------------
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extern struct ap_s* ap_set;
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extern pthread_mutex_t ap_array_mutex;
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extern struct client_s *client_set_bc;
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extern pthread_mutex_t client_array_mutex;
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// ---------------- Functions ----------------
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probe_entry *insert_to_array(probe_entry *entry, int inc_counter, int save_80211k, int is_beacon);
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int probe_array_delete(probe_entry *entry);
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probe_entry *probe_array_get_entry(struct dawn_mac bssid_addr, struct dawn_mac client_addr);
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void remove_old_probe_entries(time_t current_time, long long int threshold);
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void print_probe_array();
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void print_probe_entry(probe_entry *entry);
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int eval_probe_metric(struct probe_entry_s * probe_entry, ap *ap_entry);
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void denied_req_array_delete(auth_entry *entry);
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auth_entry *insert_to_denied_req_array(auth_entry*entry, int inc_counter);
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void print_auth_entry(auth_entry *entry);
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// ---------------- Functions ----------------
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int probe_array_update_rssi(struct dawn_mac bssid_addr, struct dawn_mac client_addr, uint32_t rssi, int send_network);
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int probe_array_update_rcpi_rsni(struct dawn_mac bssid_addr, struct dawn_mac client_addr, uint32_t rcpi, uint32_t rsni, int send_network);
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void remove_old_client_entries(time_t current_time, long long int threshold);
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client *insert_client_to_array(client *entry);
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int kick_clients(ap* kicking_ap, uint32_t id);
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void update_iw_info(struct dawn_mac bssid);
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void client_array_insert(client *entry, client ** insert_pos);
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client *client_array_get_client(const struct dawn_mac client_addr);
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client *client_array_delete(client *entry, int unlink_only);
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void print_client_array();
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void print_client_entry(client *entry);
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int is_connected_somehwere(struct dawn_mac client_addr);
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ap *insert_to_ap_array(ap *entry);
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void remove_old_ap_entries(time_t current_time, long long int threshold);
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void print_ap_array();
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ap *ap_array_get_ap(struct dawn_mac bssid_mac);
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int probe_array_set_all_probe_count(struct dawn_mac client_addr, uint32_t probe_count);
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#ifndef DAWN_NO_OUTPUT
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int ap_get_collision_count(int col_domain);
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#endif
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void send_beacon_reports(struct dawn_mac bssid, int id);
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/* Utils */
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// deprecate use of this - it makes things slow
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#define SORT_LENGTH 5
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extern char sort_string[];
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// ---------------- Functions -------------------
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int better_ap_available(ap *kicking_ap, struct dawn_mac client_addr, char* neighbor_report);
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// All users of datastorage should call init_ / destroy_mutex at initialisation and termination respectively
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int init_mutex();
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void destroy_mutex();
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#endif
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