common.h

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#ifndef _COMMON_H_
#define _COMMON_H_

#include <sys/types.h>
#include <sys/socket.h>
#include <linux/types.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/if_ether.h>
#include <iwlib.h>
#include <wireless.h>
#define DBUS_API_SUBJECT_TO_CHANGE
#include <dbus/dbus.h>
#include <wlancond.h>

/* Scan results helper struct */
typedef struct scan_results_t 
{
        char           ssid[WLANCOND_MAX_SSID_SIZE+1];
        gint32         ssid_len;
        unsigned char  bssid[ETH_ALEN];
        gint32         rssi;
        guint32        channel;
        guint32        cap_bits;
        guint32        wpa_ie_len;
        guint8         *wpa_ie;
} scan_results_t;

/* Generic WPA IE storage type */
typedef struct wpa_ie_list_t 
{
        unsigned char  bssid[ETH_ALEN];
        guint32        ie_len;
        guint8         *wpa_ie;
} wpa_ie_list_t;

/* Own WPA IE storage type */
typedef struct wpa_ie_save_t 
{
        guint32 ie_len;
        unsigned char *ie;
} wpa_ie_save_t;

/* This struct has all parameters needed for connection */
typedef struct connect_params_t
{
        dbus_int32_t mode;
        dbus_int32_t encryption;
        dbus_int32_t power_level;
        dbus_int32_t default_key;
        dbus_uint32_t adhoc_channel;
        dbus_uint32_t flags;
        char ssid[WLANCOND_MAX_SSID_SIZE+1];
        unsigned int ssid_len;
        unsigned int authentication_type;
        unsigned char key[4][32];
        int key_len[4];
        unsigned char bssid[ETH_ALEN];
} connect_params;

#define PMK_CACHE_SIZE 32
typedef struct pmksa_cache_t
{
        unsigned char mac[ETH_ALEN];
        unsigned char pmkid[IW_PMKID_LEN];
} pmksa_cache;

/* WLAN status and state is kept in this struct. 
   Scanning is separated from the state because scanning
   can be initiated separately from other WLAN activity
*/
typedef struct wlan_status_t
{
        /* Interface name cache */
        gchar ifname[IFNAMSIZ+1];
        /* Own MAC address */
        gchar own_mac[ETH_ALEN];
        /* Scan ssid */
        gchar scan_ssid[WLANCOND_MAX_SSID_SIZE+1];
        /* Scan ssid length */
        gint scan_ssid_len;
        /* Scanning state */
        guint scan;
        /* WLAN state */
        guint state;
        /* Power state */
        guint power;
        /* Cipher suites */
        guint pairwise_cipher;
        guint group_cipher;
        /* Our WPA IE */
        struct wpa_ie_save_t wpa_ie;
        /* connect params */
        struct connect_params_t conn;
        /* pmksa cache */
        GSList* pmk_cache;
        /* Roam cache */
        GSList* roam_cache;
        /* Association retry counter */
        guint retry_count;
        /* Roam scan */
        guint roam_scan;
        /* Roam scan timer ID */
        guint roam_scan_id;
        /* Normal scan timer ID */
        guint scan_id;
        /* Signal state */
        gboolean signal;
} wlan_status_t;

typedef struct wireless_iface
{
        /* Linked list */
        struct wireless_iface * next;
        
        /* Interface identification */
        int ifindex; /* Interface index == black magic */
        
        /* Interface data */
        char ifname[IFNAMSIZ + 1]; /* Interface name */
        struct iw_range range; /* Wireless static data */
        int has_range;
} wireless_iface;

/* WLAN force type e.g. in WLAN interface shutdown */
typedef enum {
        FORCE_NO,
        FORCE_YES,
} force_t;

/* WLAN signal */
#define WLANCOND_LOW TRUE
#define WLANCOND_HIGH FALSE

/* Scan state */
enum scan_state {
        SCAN_NOT_ACTIVE = 0,
        SCAN_ACTIVE
};

/* Generic WLAN state */
enum wlan_state {
        WLAN_NOT_INITIALIZED = 0,
        WLAN_INITIALIZED,
        WLAN_INITIALIZED_FOR_SCAN,
        WLAN_INITIALIZED_FOR_CONNECTION,
        WLAN_NO_ADDRESS,
        WLAN_CONNECTED
};

/* WLAN power defines */
#define WLANCOND_TX_POWER10DBM  10 // 10mW = 10dBm
#define WLANCOND_TX_POWER100DBM 20 // 100mW = 20dBm

/* WLAN power state */
enum wlan_power_state {
        WLANCOND_POWER_ON = 1,
        WLANCOND_LONG_CAM,
        WLANCOND_SHORT_CAM,
        WLANCOND_VERY_SHORT_CAM,
        WLANCOND_FULL_POWERSAVE
};

#define NULL_BSSID (unsigned char*)"\x00\x00\x00\x00\x00\x00"

#define WLANCOND_DEFAULT_SLEEP_TIMEOUT 200 // 200ms
#define WLANCOND_VERY_SHORT_CAM_TIMEOUT 100 // 100ms
#define WLANCOND_LONG_CAM_TIMEOUT 4000 // 4000ms

#define MIC_FAILURE_TIMEOUT 60000 // 60 seconds

/* Signal sending defines */
#define NO_SIGNAL           0
#define DISCONNECTED_SIGNAL 1

/* Maximum values */
#define WLANCOND_MAX_NETWORKS 30
#define WLANCOND_MAX_SCAN_TRIES 3

#define WLANCOND_ROAM_THRESHOLD 10
#define WLANCOND_MIN_ROAM_SCAN_INTERVAL 60000 // 60 seconds
#define WLANCOND_MAX_ROAM_SCAN_INTERVAL 16*60000 // 16 minutes
#define WLANCOND_RSSI_PENALTY 25 // 25dBm
#define WLANCOND_MINIMUM_SIGNAL -99

/* Gconf paths */
#define GCONF_PATH_PREFIX "/system/osso/connectivity/IAP/"
#define SLEEP_GCONF_PATH GCONF_PATH_PREFIX "wlan_sleep_timeout"
#define INACTIVE_SLEEP_GCONF_PATH GCONF_PATH_PREFIX "inactive_wlan_sleep_timeout"

/* Deauthenticate reasons */
#define WLANCOND_REASON_LEAVING 3
#define WLANCOND_REASON_MIC_FAILURE 14

/* Common functions */
gboolean monitor_wi(void);
void del_all_interface_data(void);
struct wireless_iface *get_interface_data(int ifindex);
int print_event_token(struct iw_event * event, struct scan_results_t *scan_results, int ifindex, gboolean scan_event);
void send_dbus_scan_results(GSList* scan_results_save, const char* sender,
                            dbus_int32_t number_of_results);
GSList *save_scan_results(struct scan_results_t *scan_results,
                         GSList *scan_results_save);
void clean_scan_results(GSList **scan_results_save);
void disconnected_signal(void);
void mode_change(const char *mode);
#ifdef ACTIVITY_CHECK
void activity_check(dbus_bool_t activity);
#endif

void clean_scan_results_item(gpointer data, gpointer user_data);
void print_mac(const char *message, guchar* mac);

#endif /* _COMMON_H_ */

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