/*
* wpa_supplicant - SME
- * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
*
* 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
#include "includes.h"
#include "common.h"
+#include "utils/eloop.h"
#include "common/ieee802_11_defs.h"
+#include "common/ieee802_11_common.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "common/wpa_common.h"
#include "rsn_supp/wpa.h"
#include "driver_i.h"
#include "wpas_glue.h"
#include "wps_supplicant.h"
+#include "p2p_supplicant.h"
#include "notify.h"
#include "blacklist.h"
#include "bss.h"
+#include "scan.h"
#include "sme.h"
void sme_authenticate(struct wpa_supplicant *wpa_s,
{
struct wpa_driver_auth_params params;
struct wpa_ssid *old_ssid;
+#ifdef CONFIG_IEEE80211R
const u8 *ie;
+#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211R
const u8 *md = NULL;
#endif /* CONFIG_IEEE80211R */
os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
wpa_s->sme.ssid_len = params.ssid_len;
- params.auth_alg = AUTH_ALG_OPEN_SYSTEM;
+ params.auth_alg = WPA_AUTH_ALG_OPEN;
#ifdef IEEE8021X_EAPOL
if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
if (ssid->leap) {
if (ssid->non_leap == 0)
- params.auth_alg = AUTH_ALG_LEAP;
+ params.auth_alg = WPA_AUTH_ALG_LEAP;
else
- params.auth_alg |= AUTH_ALG_LEAP;
+ params.auth_alg |= WPA_AUTH_ALG_LEAP;
}
}
#endif /* IEEE8021X_EAPOL */
wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
params.auth_alg);
if (ssid->auth_alg) {
- params.auth_alg = 0;
- if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
- params.auth_alg |= AUTH_ALG_OPEN_SYSTEM;
- if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
- params.auth_alg |= AUTH_ALG_SHARED_KEY;
- if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
- params.auth_alg |= AUTH_ALG_LEAP;
+ params.auth_alg = ssid->auth_alg;
wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
params.auth_alg);
}
if (bssid_changed)
wpas_notify_bssid_changed(wpa_s);
- if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
- wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
+ if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
+ wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
(ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
WPA_KEY_MGMT_FT_IEEE8021X |
WPA_KEY_MGMT_FT_PSK |
ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
md = ie + 2;
- wpa_sm_set_ft_params(wpa_s->wpa, md, NULL, 0, NULL);
+ wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
if (md) {
/* Prepare for the next transition */
- wpa_ft_prepare_auth_request(wpa_s->wpa);
+ wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
}
if (md && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK |
mdie = (struct rsn_mdie *) pos;
os_memcpy(mdie->mobility_domain, md,
MOBILITY_DOMAIN_ID_LEN);
- mdie->ft_capab = 0;
+ mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
wpa_s->sme.assoc_req_ie_len += 5;
}
if (wpa_s->sme.ft_used &&
- os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0) {
+ os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
+ wpa_sm_has_ptk(wpa_s->wpa)) {
wpa_printf(MSG_DEBUG, "SME: Trying to use FT "
"over-the-air");
- params.auth_alg = AUTH_ALG_FT;
+ params.auth_alg = WPA_AUTH_ALG_FT;
params.ie = wpa_s->sme.ft_ies;
params.ie_len = wpa_s->sme.ft_ies_len;
}
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
- switch (ssid->ieee80211w) {
- case NO_IEEE80211W:
- wpa_s->sme.mfp = NO_MGMT_FRAME_PROTECTION;
- break;
- case IEEE80211W_OPTIONAL:
- wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_OPTIONAL;
- break;
- case IEEE80211W_REQUIRED:
- wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
- break;
- }
- if (ssid->ieee80211w != NO_IEEE80211W && bss) {
+ wpa_s->sme.mfp = ssid->ieee80211w;
+ if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
struct wpa_ie_data _ie;
if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
}
#endif /* CONFIG_IEEE80211W */
+#ifdef CONFIG_P2P
+ if (wpa_s->global->p2p) {
+ u8 *pos;
+ size_t len;
+ int res;
+ int p2p_group;
+ p2p_group = wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE;
+ pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
+ len = sizeof(wpa_s->sme.assoc_req_ie) -
+ wpa_s->sme.assoc_req_ie_len;
+ res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, p2p_group);
+ if (res >= 0)
+ wpa_s->sme.assoc_req_ie_len += res;
+ }
+#endif /* CONFIG_P2P */
+
wpa_supplicant_cancel_scan(wpa_s);
wpa_msg(wpa_s, MSG_INFO, "Trying to authenticate with " MACSTR
if (old_ssid != wpa_s->current_ssid)
wpas_notify_network_changed(wpa_s);
+ wpa_s->sme.auth_alg = params.auth_alg;
if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) {
wpa_msg(wpa_s, MSG_INFO, "Authentication request to the "
"driver failed");
+ wpa_supplicant_req_scan(wpa_s, 1, 0);
return;
}
void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
{
- struct wpa_driver_associate_params params;
struct wpa_ssid *ssid = wpa_s->current_ssid;
if (ssid == NULL) {
if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
wpa_printf(MSG_DEBUG, "SME: Authentication failed (status "
"code %d)", data->auth.status_code);
- return;
+
+ if (data->auth.status_code !=
+ WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
+ wpa_s->sme.auth_alg == data->auth.auth_type ||
+ wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ return;
+ }
+
+ switch (data->auth.auth_type) {
+ case WLAN_AUTH_OPEN:
+ wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
+
+ wpa_printf(MSG_DEBUG, "SME: Trying SHARED auth");
+ wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
+ wpa_s->current_ssid);
+ return;
+
+ case WLAN_AUTH_SHARED_KEY:
+ wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
+
+ wpa_printf(MSG_DEBUG, "SME: Trying LEAP auth");
+ wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
+ wpa_s->current_ssid);
+ return;
+
+ default:
+ return;
+ }
}
#ifdef CONFIG_IEEE80211R
}
#endif /* CONFIG_IEEE80211R */
+ sme_associate(wpa_s, ssid->mode, data->auth.peer,
+ data->auth.auth_type);
+}
+
+
+void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
+ const u8 *bssid, u16 auth_type)
+{
+ struct wpa_driver_associate_params params;
+ struct ieee802_11_elems elems;
+
os_memset(¶ms, 0, sizeof(params));
- params.bssid = data->auth.peer;
+ params.bssid = bssid;
params.ssid = wpa_s->sme.ssid;
params.ssid_len = wpa_s->sme.ssid_len;
params.freq = wpa_s->sme.freq;
params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
wpa_s->sme.assoc_req_ie : NULL;
params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
+ params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
+ params.group_suite = cipher_suite2driver(wpa_s->group_cipher);
#ifdef CONFIG_IEEE80211R
- if (data->auth.auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
+ if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
params.wpa_ie = wpa_s->sme.ft_ies;
params.wpa_ie_len = wpa_s->sme.ft_ies_len;
}
#endif /* CONFIG_IEEE80211R */
- params.mode = ssid->mode;
+ params.mode = mode;
params.mgmt_frame_protection = wpa_s->sme.mfp;
if (wpa_s->sme.prev_bssid_set)
params.prev_bssid = wpa_s->sme.prev_bssid;
wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
+ if (params.wpa_ie == NULL ||
+ ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
+ < 0) {
+ wpa_printf(MSG_DEBUG, "SME: Could not parse own IEs?!");
+ os_memset(&elems, 0, sizeof(elems));
+ }
+ if (elems.rsn_ie)
+ wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
+ elems.rsn_ie_len + 2);
+ else if (elems.wpa_ie)
+ wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
+ elems.wpa_ie_len + 2);
+ else
+ wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
+ if (elems.p2p &&
+ (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
+ params.p2p = 1;
+
+ if (wpa_s->parent->set_sta_uapsd)
+ params.uapsd = wpa_s->parent->sta_uapsd;
+ else
+ params.uapsd = -1;
+
if (wpa_drv_associate(wpa_s, ¶ms) < 0) {
wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
"failed");
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
+ os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
return;
}
union wpa_event_data *data)
{
int bssid_changed;
- int timeout = 5000;
wpa_printf(MSG_DEBUG, "SME: Association with " MACSTR " failed: "
"status code %d", MAC2STR(wpa_s->pending_bssid),
}
wpa_s->sme.prev_bssid_set = 0;
- if (wpa_blacklist_add(wpa_s, wpa_s->pending_bssid) == 0) {
- struct wpa_blacklist *b;
- b = wpa_blacklist_get(wpa_s, wpa_s->pending_bssid);
- if (b && b->count < 3) {
- /*
- * Speed up next attempt if there could be other APs
- * that could accept association.
- */
- timeout = 100;
- }
- }
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
os_memset(wpa_s->bssid, 0, ETH_ALEN);
os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
if (bssid_changed)
wpas_notify_bssid_changed(wpa_s);
-
- /*
- * TODO: if more than one possible AP is available in scan results,
- * could try the other ones before requesting a new scan.
- */
- wpa_supplicant_req_scan(wpa_s, timeout / 1000,
- 1000 * (timeout % 1000));
}
union wpa_event_data *data)
{
wpa_printf(MSG_DEBUG, "SME: Authentication timed out");
- wpa_supplicant_req_scan(wpa_s, 5, 0);
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
}
union wpa_event_data *data)
{
wpa_printf(MSG_DEBUG, "SME: Association timed out");
+ wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
wpa_supplicant_mark_disassoc(wpa_s);
- wpa_supplicant_req_scan(wpa_s, 5, 0);
}
union wpa_event_data *data)
{
wpa_printf(MSG_DEBUG, "SME: Disassociation event received");
- if (!is_zero_ether_addr(wpa_s->bssid) &&
+ if (wpa_s->sme.prev_bssid_set &&
!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)) {
/*
* cfg80211/mac80211 can get into somewhat confused state if
*/
wpa_printf(MSG_DEBUG, "SME: Deauthenticate to clear driver "
"state");
- wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
+ wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
WLAN_REASON_DEAUTH_LEAVING);
}
}
+
+
+#ifdef CONFIG_IEEE80211W
+
+static const unsigned int sa_query_max_timeout = 1000;
+static const unsigned int sa_query_retry_timeout = 201;
+
+static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
+{
+ u32 tu;
+ struct os_time now, passed;
+ os_get_time(&now);
+ os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed);
+ tu = (passed.sec * 1000000 + passed.usec) / 1024;
+ if (sa_query_max_timeout < tu) {
+ wpa_printf(MSG_DEBUG, "SME: SA Query timed out");
+ sme_stop_sa_query(wpa_s);
+ wpa_supplicant_deauthenticate(
+ wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
+ return 1;
+ }
+
+ return 0;
+}
+
+
+static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
+ const u8 *trans_id)
+{
+ u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
+ wpa_printf(MSG_DEBUG, "SME: Sending SA Query Request to "
+ MACSTR, MAC2STR(wpa_s->bssid));
+ wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
+ trans_id, WLAN_SA_QUERY_TR_ID_LEN);
+ req[0] = WLAN_ACTION_SA_QUERY;
+ req[1] = WLAN_SA_QUERY_REQUEST;
+ os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
+ if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, wpa_s->bssid,
+ wpa_s->own_addr, wpa_s->bssid,
+ req, sizeof(req)) < 0)
+ wpa_printf(MSG_INFO, "SME: Failed to send SA Query Request");
+}
+
+
+static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
+{
+ struct wpa_supplicant *wpa_s = eloop_ctx;
+ unsigned int timeout, sec, usec;
+ u8 *trans_id, *nbuf;
+
+ if (wpa_s->sme.sa_query_count > 0 &&
+ sme_check_sa_query_timeout(wpa_s))
+ return;
+
+ nbuf = os_realloc(wpa_s->sme.sa_query_trans_id,
+ (wpa_s->sme.sa_query_count + 1) *
+ WLAN_SA_QUERY_TR_ID_LEN);
+ if (nbuf == NULL)
+ return;
+ if (wpa_s->sme.sa_query_count == 0) {
+ /* Starting a new SA Query procedure */
+ os_get_time(&wpa_s->sme.sa_query_start);
+ }
+ trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
+ wpa_s->sme.sa_query_trans_id = nbuf;
+ wpa_s->sme.sa_query_count++;
+
+ os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
+
+ timeout = sa_query_retry_timeout;
+ sec = ((timeout / 1000) * 1024) / 1000;
+ usec = (timeout % 1000) * 1024;
+ eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
+
+ wpa_printf(MSG_DEBUG, "SME: Association SA Query attempt %d",
+ wpa_s->sme.sa_query_count);
+
+ sme_send_sa_query_req(wpa_s, trans_id);
+}
+
+
+static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
+{
+ sme_sa_query_timer(wpa_s, NULL);
+}
+
+
+void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
+{
+ eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
+ os_free(wpa_s->sme.sa_query_trans_id);
+ wpa_s->sme.sa_query_trans_id = NULL;
+ wpa_s->sme.sa_query_count = 0;
+}
+
+
+void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
+ const u8 *da, u16 reason_code)
+{
+ struct wpa_ssid *ssid;
+
+ if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
+ return;
+ if (wpa_s->wpa_state != WPA_COMPLETED)
+ return;
+ ssid = wpa_s->current_ssid;
+ if (ssid == NULL || ssid->ieee80211w == 0)
+ return;
+ if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
+ return;
+ if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
+ reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
+ return;
+ if (wpa_s->sme.sa_query_count > 0)
+ return;
+
+ wpa_printf(MSG_DEBUG, "SME: Unprotected disconnect dropped - possible "
+ "AP/STA state mismatch - trigger SA Query");
+ sme_start_sa_query(wpa_s);
+}
+
+
+void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
+ const u8 *data, size_t len)
+{
+ int i;
+
+ if (wpa_s->sme.sa_query_trans_id == NULL ||
+ len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
+ data[0] != WLAN_SA_QUERY_RESPONSE)
+ return;
+ wpa_printf(MSG_DEBUG, "SME: Received SA Query response from " MACSTR
+ " (trans_id %02x%02x)",
+ MAC2STR(sa), data[1], data[2]);
+
+ if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
+ return;
+
+ for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
+ if (os_memcmp(wpa_s->sme.sa_query_trans_id +
+ i * WLAN_SA_QUERY_TR_ID_LEN,
+ data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
+ break;
+ }
+
+ if (i >= wpa_s->sme.sa_query_count) {
+ wpa_printf(MSG_DEBUG, "SME: No matching SA Query "
+ "transaction identifier found");
+ return;
+ }
+
+ wpa_printf(MSG_DEBUG, "SME: Reply to pending SA Query received from "
+ MACSTR, MAC2STR(sa));
+ sme_stop_sa_query(wpa_s);
+}
+
+#endif /* CONFIG_IEEE80211W */
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