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fragattacks/src/ap/sta_info.h
Masashi Honma 9f2cf23e2e mesh: Add support for PMKSA caching 
This patch add functionality of mesh SAE PMKSA caching. If the local STA
already has peer's PMKSA entry in the cache, skip SAE authentication and
start AMPE with the cached value.

If the peer does not support PMKSA caching or does not have the local
STA's PMKSA entry in the cache, AMPE will fail and the PMKSA cache entry
of the peer will be removed. Then STA retries with ordinary SAE
authentication.

If the peer does not support PMKSA caching and the local STA uses
no_auto_peer=1, the local STA can not retry SAE authentication because
NEW_PEER_CANDIDATE event cannot start SAE authentication when
no_auto_peer=1. So this patch extends MESH_PEER_ADD command to use
duration(sec). Throughout the duration, the local STA can start SAE
authentication triggered by NEW_PEER_CANDIDATE even though
no_auto_peer=1.

This commit requires commit 70c93963ed
('SAE: Fix PMKID calculation for PMKSA cache'). Without that commit,
chosen PMK comparison will fail.

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
2016-03-20 17:56:38 +02:00

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/*
* hostapd / Station table
* Copyright (c) 2002-2011, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef STA_INFO_H
#define STA_INFO_H
#ifdef CONFIG_MESH
/* needed for mesh_plink_state enum */
#include "common/defs.h"
#endif /* CONFIG_MESH */
#include "list.h"
#include "vlan.h"
/* STA flags */
#define WLAN_STA_AUTH BIT(0)
#define WLAN_STA_ASSOC BIT(1)
#define WLAN_STA_AUTHORIZED BIT(5)
#define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */
#define WLAN_STA_SHORT_PREAMBLE BIT(7)
#define WLAN_STA_PREAUTH BIT(8)
#define WLAN_STA_WMM BIT(9)
#define WLAN_STA_MFP BIT(10)
#define WLAN_STA_HT BIT(11)
#define WLAN_STA_WPS BIT(12)
#define WLAN_STA_MAYBE_WPS BIT(13)
#define WLAN_STA_WDS BIT(14)
#define WLAN_STA_ASSOC_REQ_OK BIT(15)
#define WLAN_STA_WPS2 BIT(16)
#define WLAN_STA_GAS BIT(17)
#define WLAN_STA_VHT BIT(18)
#define WLAN_STA_WNM_SLEEP_MODE BIT(19)
#define WLAN_STA_VHT_OPMODE_ENABLED BIT(20)
#define WLAN_STA_VENDOR_VHT BIT(21)
#define WLAN_STA_PENDING_DISASSOC_CB BIT(29)
#define WLAN_STA_PENDING_DEAUTH_CB BIT(30)
#define WLAN_STA_NONERP BIT(31)
/* Maximum number of supported rates (from both Supported Rates and Extended
* Supported Rates IEs). */
#define WLAN_SUPP_RATES_MAX 32
struct mbo_non_pref_chan_info {
struct mbo_non_pref_chan_info *next;
u8 op_class;
u8 pref;
u8 reason_code;
u8 reason_detail;
u8 num_channels;
u8 channels[];
};
struct pending_eapol_rx {
struct wpabuf *buf;
struct os_reltime rx_time;
};
struct sta_info {
struct sta_info *next; /* next entry in sta list */
struct sta_info *hnext; /* next entry in hash table list */
u8 addr[6];
be32 ipaddr;
struct dl_list ip6addr; /* list head for struct ip6addr */
u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */
u32 flags; /* Bitfield of WLAN_STA_* */
u16 capability;
u16 listen_interval; /* or beacon_int for APs */
u8 supported_rates[WLAN_SUPP_RATES_MAX];
int supported_rates_len;
u8 qosinfo; /* Valid when WLAN_STA_WMM is set */
#ifdef CONFIG_MESH
enum mesh_plink_state plink_state;
u16 peer_lid;
u16 my_lid;
u16 mpm_close_reason;
int mpm_retries;
u8 my_nonce[32];
u8 peer_nonce[32];
u8 aek[32]; /* SHA256 digest length */
u8 mtk[16];
u8 mgtk[16];
u8 sae_auth_retry;
#endif /* CONFIG_MESH */
unsigned int nonerp_set:1;
unsigned int no_short_slot_time_set:1;
unsigned int no_short_preamble_set:1;
unsigned int no_ht_gf_set:1;
unsigned int no_ht_set:1;
unsigned int ht40_intolerant_set:1;
unsigned int ht_20mhz_set:1;
unsigned int no_p2p_set:1;
unsigned int qos_map_enabled:1;
unsigned int remediation:1;
unsigned int hs20_deauth_requested:1;
unsigned int session_timeout_set:1;
unsigned int radius_das_match:1;
unsigned int ecsa_supported:1;
unsigned int added_unassoc:1;
u16 auth_alg;
enum {
STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH, STA_REMOVE,
STA_DISASSOC_FROM_CLI
} timeout_next;
u16 deauth_reason;
u16 disassoc_reason;
/* IEEE 802.1X related data */
struct eapol_state_machine *eapol_sm;
struct pending_eapol_rx *pending_eapol_rx;
u64 acct_session_id;
struct os_reltime acct_session_start;
int acct_session_started;
int acct_terminate_cause; /* Acct-Terminate-Cause */
int acct_interim_interval; /* Acct-Interim-Interval */
unsigned int acct_interim_errors;
/* For extending 32-bit driver counters to 64-bit counters */
u32 last_rx_bytes_hi;
u32 last_rx_bytes_lo;
u32 last_tx_bytes_hi;
u32 last_tx_bytes_lo;
u8 *challenge; /* IEEE 802.11 Shared Key Authentication Challenge */
struct wpa_state_machine *wpa_sm;
struct rsn_preauth_interface *preauth_iface;
int vlan_id; /* 0: none, >0: VID */
struct vlan_description *vlan_desc;
int vlan_id_bound; /* updated by ap_sta_bind_vlan() */
/* PSKs from RADIUS authentication server */
struct hostapd_sta_wpa_psk_short *psk;
char *identity; /* User-Name from RADIUS */
char *radius_cui; /* Chargeable-User-Identity from RADIUS */
struct ieee80211_ht_capabilities *ht_capabilities;
struct ieee80211_vht_capabilities *vht_capabilities;
u8 vht_opmode;
#ifdef CONFIG_IEEE80211W
int sa_query_count; /* number of pending SA Query requests;
* 0 = no SA Query in progress */
int sa_query_timed_out;
u8 *sa_query_trans_id; /* buffer of WLAN_SA_QUERY_TR_ID_LEN *
* sa_query_count octets of pending SA Query
* transaction identifiers */
struct os_reltime sa_query_start;
#endif /* CONFIG_IEEE80211W */
#ifdef CONFIG_INTERWORKING
#define GAS_DIALOG_MAX 8 /* Max concurrent dialog number */
struct gas_dialog_info *gas_dialog;
u8 gas_dialog_next;
#endif /* CONFIG_INTERWORKING */
struct wpabuf *wps_ie; /* WPS IE from (Re)Association Request */
struct wpabuf *p2p_ie; /* P2P IE from (Re)Association Request */
struct wpabuf *hs20_ie; /* HS 2.0 IE from (Re)Association Request */
u8 remediation_method;
char *remediation_url; /* HS 2.0 Subscription Remediation Server URL */
struct wpabuf *hs20_deauth_req;
char *hs20_session_info_url;
int hs20_disassoc_timer;
#ifdef CONFIG_FST
struct wpabuf *mb_ies; /* MB IEs from (Re)Association Request */
#endif /* CONFIG_FST */
struct os_reltime connected_time;
#ifdef CONFIG_SAE
struct sae_data *sae;
unsigned int mesh_sae_pmksa_caching:1;
#endif /* CONFIG_SAE */
u32 session_timeout; /* valid only if session_timeout_set == 1 */
/* Last Authentication/(Re)Association Request/Action frame sequence
* control */
u16 last_seq_ctrl;
/* Last Authentication/(Re)Association Request/Action frame subtype */
u8 last_subtype;
#ifdef CONFIG_MBO
u8 cell_capa; /* 0 = unknown (not an MBO STA); otherwise,
* enum mbo_cellular_capa values */
struct mbo_non_pref_chan_info *non_pref_chan;
#endif /* CONFIG_MBO */
u8 *supp_op_classes; /* Supported Operating Classes element, if
* received, starting from the Length field */
};
/* Default value for maximum station inactivity. After AP_MAX_INACTIVITY has
* passed since last received frame from the station, a nullfunc data frame is
* sent to the station. If this frame is not acknowledged and no other frames
* have been received, the station will be disassociated after
* AP_DISASSOC_DELAY seconds. Similarly, the station will be deauthenticated
* after AP_DEAUTH_DELAY seconds has passed after disassociation. */
#define AP_MAX_INACTIVITY (5 * 60)
#define AP_DISASSOC_DELAY (3)
#define AP_DEAUTH_DELAY (1)
/* Number of seconds to keep STA entry with Authenticated flag after it has
* been disassociated. */
#define AP_MAX_INACTIVITY_AFTER_DISASSOC (1 * 30)
/* Number of seconds to keep STA entry after it has been deauthenticated. */
#define AP_MAX_INACTIVITY_AFTER_DEAUTH (1 * 5)
struct hostapd_data;
int ap_for_each_sta(struct hostapd_data *hapd,
int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
void *ctx),
void *ctx);
struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta);
struct sta_info * ap_get_sta_p2p(struct hostapd_data *hapd, const u8 *addr);
void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta);
void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta);
void ap_sta_ip6addr_del(struct hostapd_data *hapd, struct sta_info *sta);
void hostapd_free_stas(struct hostapd_data *hapd);
void ap_handle_timer(void *eloop_ctx, void *timeout_ctx);
void ap_sta_replenish_timeout(struct hostapd_data *hapd, struct sta_info *sta,
u32 session_timeout);
void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
u32 session_timeout);
void ap_sta_no_session_timeout(struct hostapd_data *hapd,
struct sta_info *sta);
void ap_sta_session_warning_timeout(struct hostapd_data *hapd,
struct sta_info *sta, int warning_time);
struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr);
void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
u16 reason);
void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
u16 reason);
#ifdef CONFIG_WPS
int ap_sta_wps_cancel(struct hostapd_data *hapd,
struct sta_info *sta, void *ctx);
#endif /* CONFIG_WPS */
int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta);
int ap_sta_set_vlan(struct hostapd_data *hapd, struct sta_info *sta,
struct vlan_description *vlan_desc);
void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta);
int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta);
void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
const u8 *addr, u16 reason);
void ap_sta_set_authorized(struct hostapd_data *hapd,
struct sta_info *sta, int authorized);
static inline int ap_sta_is_authorized(struct sta_info *sta)
{
return sta->flags & WLAN_STA_AUTHORIZED;
}
void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta);
void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta);
void ap_sta_clear_disconnect_timeouts(struct hostapd_data *hapd,
struct sta_info *sta);
int ap_sta_flags_txt(u32 flags, char *buf, size_t buflen);
#endif /* STA_INFO_H */
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