wpa_supplicant_i.h

WLAN无线网络管理的最新程序

/*
 * wpa_supplicant - Internal definitions
 * Copyright (c) 2003-2006, Jouni Malinen <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 */

#ifndef WPA_SUPPLICANT_I_H
#define WPA_SUPPLICANT_I_H

#include "driver.h"

struct wpa_blacklist {
	struct wpa_blacklist *next;
	u8 bssid[ETH_ALEN];
	int count;
};


struct wpa_scan_result;
struct wpa_sm;
struct wpa_supplicant;

/*
 * Forward declarations of private structures used within the ctrl_iface
 * backends. Other parts of wpa_supplicant do not have access to data stored in
 * these structures.
 */
struct ctrl_iface_priv;
struct ctrl_iface_global_priv;
struct ctrl_iface_dbus_priv;

/**
 * struct wpa_interface - Parameters for wpa_supplicant_add_iface()
 */
struct wpa_interface {
	/**
	 * confname - Configuration name (file or profile) name
	 *
	 * This can also be %NULL when a configuration file is not used. In
	 * that case, ctrl_interface must be set to allow the interface to be
	 * configured.
	 */
	const char *confname;

	/**
	 * ctrl_interface - Control interface parameter
	 *
	 * If a configuration file is not used, this variable can be used to
	 * set the ctrl_interface parameter that would have otherwise been read
	 * from the configuration file. If both confname and ctrl_interface are
	 * set, ctrl_interface is used to override the value from configuration
	 * file.
	 */
	const char *ctrl_interface;

	/**
	 * driver - Driver interface name, or %NULL to use the default driver
	 */
	const char *driver;

	/**
	 * driver_param - Driver interface parameters
	 *
	 * If a configuration file is not used, this variable can be used to
	 * set the driver_param parameters that would have otherwise been read
	 * from the configuration file. If both confname and driver_param are
	 * set, driver_param is used to override the value from configuration
	 * file.
	 */
	const char *driver_param;

	/**
	 * ifname - Interface name
	 */
	const char *ifname;

	/**
	 * bridge_ifname - Optional bridge interface name
	 *
	 * If the driver interface (ifname) is included in a Linux bridge
	 * device, the bridge interface may need to be used for receiving EAPOL
	 * frames. This can be enabled by setting this variable to enable
	 * receiving of EAPOL frames from an additional interface.
	 */
	const char *bridge_ifname;
};

/**
 * struct wpa_params - Parameters for wpa_supplicant_init()
 */
struct wpa_params {
	/**
	 * daemonize - Run %wpa_supplicant in the background
	 */
	int daemonize;

	/**
	 * wait_for_interface - Wait for the network interface to appear
	 *
	 * If set, %wpa_supplicant will wait until all the configured network
	 * interfaces are available before starting processing. Please note
	 * that in many cases, a better alternative would be to start
	 * %wpa_supplicant without network interfaces and add the interfaces
	 * dynamically whenever they become available.
	 */
	int wait_for_interface;

	/**
	 * wait_for_monitor - Wait for a monitor program before starting
	 */
	int wait_for_monitor;

	/**
	 * pid_file - Path to a PID (process ID) file
	 *
	 * If this and daemonize are set, process ID of the background process
	 * will be written to the specified file.
	 */
	char *pid_file;

	/**
	 * wpa_debug_level - Debugging verbosity level (e.g., MSG_INFO)
	 */
	int wpa_debug_level;

	/**
	 * wpa_debug_show_keys - Whether keying material is included in debug
	 *
	 * This parameter can be used to allow keying material to be included
	 * in debug messages. This is a security risk and this option should
	 * not be enabled in normal configuration. If needed during
	 * development or while troubleshooting, this option can provide more
	 * details for figuring out what is happening.
	 */
	int wpa_debug_show_keys;

	/**
	 * wpa_debug_timestamp - Whether to include timestamp in debug messages
	 */
	int wpa_debug_timestamp;

	/**
	 * ctrl_interface - Global ctrl_iface path/parameter
	 */
	char *ctrl_interface;

	/**
	 * dbus_ctrl_interface - Enable the DBus control interface
	 */
	int dbus_ctrl_interface;

	/**
	 * wpa_debug_file_path - Path of debug file or %NULL to use stdout
	 */
	const char *wpa_debug_file_path;
};

/**
 * struct wpa_global - Internal, global data for all %wpa_supplicant interfaces
 *
 * This structure is initialized by calling wpa_supplicant_init() when starting
 * %wpa_supplicant.
 */
struct wpa_global {
	struct wpa_supplicant *ifaces;
	struct wpa_params params;
	struct ctrl_iface_global_priv *ctrl_iface;
	struct ctrl_iface_dbus_priv *dbus_ctrl_iface;
};


struct wpa_client_mlme {
#ifdef CONFIG_CLIENT_MLME
	enum {
		IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
		IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
		IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
	} state;
	u8 prev_bssid[ETH_ALEN];
	u8 ssid[32];
	size_t ssid_len;
	u16 aid;
	u16 ap_capab, capab;
	u8 *extra_ie; /* to be added to the end of AssocReq */
	size_t extra_ie_len;
	wpa_key_mgmt key_mgmt;

	/* The last AssocReq/Resp IEs */
	u8 *assocreq_ies, *assocresp_ies;
	size_t assocreq_ies_len, assocresp_ies_len;

	int auth_tries, assoc_tries;

	unsigned int ssid_set:1;
	unsigned int bssid_set:1;
	unsigned int prev_bssid_set:1;
	unsigned int authenticated:1;
	unsigned int associated:1;
	unsigned int probereq_poll:1;
	unsigned int use_protection:1;
	unsigned int create_ibss:1;
	unsigned int mixed_cell:1;
	unsigned int wmm_enabled:1;

	struct os_time last_probe;

#define IEEE80211_AUTH_ALG_OPEN BIT(0)
#define IEEE80211_AUTH_ALG_SHARED_KEY BIT(1)
#define IEEE80211_AUTH_ALG_LEAP BIT(2)
	unsigned int auth_algs; /* bitfield of allowed auth algs */
	int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
	int auth_transaction;

	struct os_time ibss_join_req;
	u8 *probe_resp; /* ProbeResp template for IBSS */
	size_t probe_resp_len;
	u32 supp_rates_bits;

	int wmm_last_param_set;

	int sta_scanning;
	int scan_hw_mode_idx;
	int scan_channel_idx;
	enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
	struct os_time last_scan_completed;
	int scan_oper_channel;
	int scan_oper_freq;
	int scan_oper_phymode;
	u8 scan_ssid[32];
	size_t scan_ssid_len;
	int scan_skip_11b;

	struct ieee80211_sta_bss *sta_bss_list;
#define STA_HASH_SIZE 256
#define STA_HASH(sta) (sta[5])
	struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];

	int cts_protect_erp_frames;

	int phymode; /* current mode; WPA_MODE_IEEE80211A, .. */
	struct wpa_hw_modes *modes;
	size_t num_modes;
	unsigned int hw_modes; /* bitfield of allowed hardware modes;
				* (1 << MODE_*) */
	int num_curr_rates;
	struct wpa_rate_data *curr_rates;
	int freq; /* The current frequency in MHz */
	int channel; /* The current IEEE 802.11 channel number */
#else /* CONFIG_CLIENT_MLME */
	int dummy; /* to keep MSVC happy */
#endif /* CONFIG_CLIENT_MLME */
};

/**
 * struct wpa_supplicant - Internal data for wpa_supplicant interface
 *
 * This structure contains the internal data for core wpa_supplicant code. This
 * should be only used directly from the core code. However, a pointer to this
 * data is used from other files as an arbitrary context pointer in calls to
 * core functions.
 */
struct wpa_supplicant {
	struct wpa_global *global;
	struct wpa_supplicant *next;
	struct l2_packet_data *l2;
	struct l2_packet_data *l2_br;
	unsigned char own_addr[ETH_ALEN];
	char ifname[100];
#ifdef CONFIG_CTRL_IFACE_DBUS
	char *dbus_path;
#endif /* CONFIG_CTRL_IFACE_DBUS */
	char bridge_ifname[16];

	char *confname;
	struct wpa_config *conf;
	int countermeasures;
	os_time_t last_michael_mic_error;
	u8 bssid[ETH_ALEN];
	u8 pending_bssid[ETH_ALEN]; /* If wpa_state == WPA_ASSOCIATING, this
				     * field contains the targer BSSID. */
	int reassociate; /* reassociation requested */
	int disconnected; /* all connections disabled; i.e., do no reassociate
			   * before this has been cleared */
	struct wpa_ssid *current_ssid;

	/* Selected configuration (based on Beacon/ProbeResp WPA IE) */
	int pairwise_cipher;
	int group_cipher;
	int key_mgmt;
	int mgmt_group_cipher;

	void *drv_priv; /* private data used by driver_ops */

	struct wpa_ssid *prev_scan_ssid; /* previously scanned SSID;
					  * NULL = not yet initialized (start
					  * with broadcast SSID)
					  * BROADCAST_SSID_SCAN = broadcast
					  * SSID was used in the previous scan
					  */
#define BROADCAST_SSID_SCAN ((struct wpa_ssid *) 1)

	struct wpa_scan_result *scan_results;
	int num_scan_results;

	struct wpa_driver_ops *driver;
	int interface_removed; /* whether the network interface has been
				* removed */
	struct wpa_sm *wpa;
	struct eapol_sm *eapol;

	struct ctrl_iface_priv *ctrl_iface;

	wpa_states wpa_state;
	int new_connection;
	int reassociated_connection;

	int eapol_received; /* number of EAPOL packets received after the
			     * previous association event */

	struct scard_data *scard;

	unsigned char last_eapol_src[ETH_ALEN];

	int keys_cleared;

	struct wpa_blacklist *blacklist;

	int scan_req; /* manual scan request; this forces a scan even if there
		       * are no enabled networks in the configuration */
	int scan_res_tried; /* whether ap_scan=1 mode has tried to fetch scan
			     * results without a new scan request; this is used
			     * to speed up the first association if the driver
			     * has already available scan results. */

	struct wpa_client_mlme mlme;
	int use_client_mlme;
};


/* wpa_supplicant.c */
void wpa_supplicant_cancel_scan(struct wpa_supplicant *wpa_s);