X-Git-Url: http://www.project-moonshot.org/gitweb/?p=mech_eap.git;a=blobdiff_plain;f=wpa_supplicant%2Fbss.c;h=3687a2e5aead2d63f3423631b5e54117f3756c1c;hp=033384ce1074e20e9de837a825073a5dbb39348d;hb=e8afaad7fd9a7fc9a761ed2f8a117bbb6ac9c730;hpb=69278f73288631700b6e9c027301f561b42f9609 diff --git a/wpa_supplicant/bss.c b/wpa_supplicant/bss.c index 033384c..3687a2e 100644 --- a/wpa_supplicant/bss.c +++ b/wpa_supplicant/bss.c @@ -1,6 +1,6 @@ /* * BSS table - * Copyright (c) 2009-2012, Jouni Malinen + * Copyright (c) 2009-2015, Jouni Malinen * * This software may be distributed under the terms of the BSD license. * See README for more details. @@ -12,6 +12,7 @@ #include "utils/eloop.h" #include "common/ieee802_11_defs.h" #include "drivers/driver.h" +#include "eap_peer/eap.h" #include "wpa_supplicant_i.h" #include "config.h" #include "notify.h" @@ -19,11 +20,6 @@ #include "bss.h" -/** - * WPA_BSS_EXPIRATION_PERIOD - Period of expiration run in seconds - */ -#define WPA_BSS_EXPIRATION_PERIOD 10 - #define WPA_BSS_FREQ_CHANGED_FLAG BIT(0) #define WPA_BSS_SIGNAL_CHANGED_FLAG BIT(1) #define WPA_BSS_PRIVACY_CHANGED_FLAG BIT(2) @@ -65,6 +61,9 @@ struct wpa_bss_anqp * wpa_bss_anqp_alloc(void) anqp = os_zalloc(sizeof(*anqp)); if (anqp == NULL) return NULL; +#ifdef CONFIG_INTERWORKING + dl_list_init(&anqp->anqp_elems); +#endif /* CONFIG_INTERWORKING */ anqp->users = 1; return anqp; } @@ -85,6 +84,8 @@ static struct wpa_bss_anqp * wpa_bss_anqp_clone(struct wpa_bss_anqp *anqp) #define ANQP_DUP(f) if (anqp->f) n->f = wpabuf_dup(anqp->f) #ifdef CONFIG_INTERWORKING + dl_list_init(&n->anqp_elems); + ANQP_DUP(capability_list); ANQP_DUP(venue_name); ANQP_DUP(network_auth_type); ANQP_DUP(roaming_consortium); @@ -94,10 +95,12 @@ static struct wpa_bss_anqp * wpa_bss_anqp_clone(struct wpa_bss_anqp *anqp) ANQP_DUP(domain_name); #endif /* CONFIG_INTERWORKING */ #ifdef CONFIG_HS20 + ANQP_DUP(hs20_capability_list); ANQP_DUP(hs20_operator_friendly_name); ANQP_DUP(hs20_wan_metrics); ANQP_DUP(hs20_connection_capability); ANQP_DUP(hs20_operating_class); + ANQP_DUP(hs20_osu_providers_list); #endif /* CONFIG_HS20 */ #undef ANQP_DUP @@ -143,6 +146,10 @@ int wpa_bss_anqp_unshare_alloc(struct wpa_bss *bss) */ static void wpa_bss_anqp_free(struct wpa_bss_anqp *anqp) { +#ifdef CONFIG_INTERWORKING + struct wpa_bss_anqp_elem *elem; +#endif /* CONFIG_INTERWORKING */ + if (anqp == NULL) return; @@ -153,6 +160,7 @@ static void wpa_bss_anqp_free(struct wpa_bss_anqp *anqp) } #ifdef CONFIG_INTERWORKING + wpabuf_free(anqp->capability_list); wpabuf_free(anqp->venue_name); wpabuf_free(anqp->network_auth_type); wpabuf_free(anqp->roaming_consortium); @@ -160,18 +168,52 @@ static void wpa_bss_anqp_free(struct wpa_bss_anqp *anqp) wpabuf_free(anqp->nai_realm); wpabuf_free(anqp->anqp_3gpp); wpabuf_free(anqp->domain_name); + + while ((elem = dl_list_first(&anqp->anqp_elems, + struct wpa_bss_anqp_elem, list))) { + dl_list_del(&elem->list); + wpabuf_free(elem->payload); + os_free(elem); + } #endif /* CONFIG_INTERWORKING */ #ifdef CONFIG_HS20 + wpabuf_free(anqp->hs20_capability_list); wpabuf_free(anqp->hs20_operator_friendly_name); wpabuf_free(anqp->hs20_wan_metrics); wpabuf_free(anqp->hs20_connection_capability); wpabuf_free(anqp->hs20_operating_class); + wpabuf_free(anqp->hs20_osu_providers_list); #endif /* CONFIG_HS20 */ os_free(anqp); } +static void wpa_bss_update_pending_connect(struct wpa_supplicant *wpa_s, + struct wpa_bss *old_bss, + struct wpa_bss *new_bss) +{ + struct wpa_radio_work *work; + struct wpa_connect_work *cwork; + + work = radio_work_pending(wpa_s, "sme-connect"); + if (!work) + work = radio_work_pending(wpa_s, "connect"); + if (!work) + return; + + cwork = work->ctx; + if (cwork->bss != old_bss) + return; + + wpa_printf(MSG_DEBUG, + "Update BSS pointer for the pending connect radio work"); + cwork->bss = new_bss; + if (!new_bss) + cwork->bss_removed = 1; +} + + static void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, const char *reason) { @@ -188,6 +230,7 @@ static void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, } } } + wpa_bss_update_pending_connect(wpa_s, bss, NULL); dl_list_del(&bss->list); dl_list_del(&bss->list_id); wpa_s->num_bss--; @@ -254,11 +297,54 @@ static void wpa_bss_copy_res(struct wpa_bss *dst, struct wpa_scan_res *src, dst->noise = src->noise; dst->level = src->level; dst->tsf = src->tsf; + dst->est_throughput = src->est_throughput; + dst->snr = src->snr; calculate_update_time(fetch_time, src->age, &dst->last_update); } +static int wpa_bss_is_wps_candidate(struct wpa_supplicant *wpa_s, + struct wpa_bss *bss) +{ +#ifdef CONFIG_WPS + struct wpa_ssid *ssid; + struct wpabuf *wps_ie; + int pbc = 0, ret; + + wps_ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); + if (!wps_ie) + return 0; + + if (wps_is_selected_pbc_registrar(wps_ie)) { + pbc = 1; + } else if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) { + wpabuf_free(wps_ie); + return 0; + } + + for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { + if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) + continue; + if (ssid->ssid_len && + (ssid->ssid_len != bss->ssid_len || + os_memcmp(ssid->ssid, bss->ssid, ssid->ssid_len) != 0)) + continue; + + if (pbc) + ret = eap_is_wps_pbc_enrollee(&ssid->eap); + else + ret = eap_is_wps_pin_enrollee(&ssid->eap); + wpabuf_free(wps_ie); + return ret; + } + wpabuf_free(wps_ie); +#endif /* CONFIG_WPS */ + + return 0; +} + + static int wpa_bss_known(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) { struct wpa_ssid *ssid; @@ -277,9 +363,18 @@ static int wpa_bss_known(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) static int wpa_bss_in_use(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) { - return bss == wpa_s->current_bss || - os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) == 0 || - os_memcmp(bss->bssid, wpa_s->pending_bssid, ETH_ALEN) == 0; + if (bss == wpa_s->current_bss) + return 1; + + if (wpa_s->current_bss && + (bss->ssid_len != wpa_s->current_bss->ssid_len || + os_memcmp(bss->ssid, wpa_s->current_bss->ssid, + bss->ssid_len) != 0)) + return 0; /* SSID has changed */ + + return !is_zero_ether_addr(bss->bssid) && + (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) == 0 || + os_memcmp(bss->bssid, wpa_s->pending_bssid, ETH_ALEN) == 0); } @@ -288,7 +383,8 @@ static int wpa_bss_remove_oldest_unknown(struct wpa_supplicant *wpa_s) struct wpa_bss *bss; dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { - if (!wpa_bss_known(wpa_s, bss)) { + if (!wpa_bss_known(wpa_s, bss) && + !wpa_bss_is_wps_candidate(wpa_s, bss)) { wpa_bss_remove(wpa_s, bss, __func__); return 0; } @@ -355,15 +451,16 @@ static struct wpa_bss * wpa_bss_add(struct wpa_supplicant *wpa_s, dl_list_add_tail(&wpa_s->bss_id, &bss->list_id); wpa_s->num_bss++; wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Add new id %u BSSID " MACSTR - " SSID '%s'", - bss->id, MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len)); + " SSID '%s' freq %d", + bss->id, MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len), + bss->freq); wpas_notify_bss_added(wpa_s, bss->bssid, bss->id); return bss; } static int are_ies_equal(const struct wpa_bss *old, - const struct wpa_scan_res *new, u32 ie) + const struct wpa_scan_res *new_res, u32 ie) { const u8 *old_ie, *new_ie; struct wpabuf *old_ie_buff = NULL; @@ -373,19 +470,19 @@ static int are_ies_equal(const struct wpa_bss *old, switch (ie) { case WPA_IE_VENDOR_TYPE: old_ie = wpa_bss_get_vendor_ie(old, ie); - new_ie = wpa_scan_get_vendor_ie(new, ie); + new_ie = wpa_scan_get_vendor_ie(new_res, ie); is_multi = 0; break; case WPS_IE_VENDOR_TYPE: old_ie_buff = wpa_bss_get_vendor_ie_multi(old, ie); - new_ie_buff = wpa_scan_get_vendor_ie_multi(new, ie); + new_ie_buff = wpa_scan_get_vendor_ie_multi(new_res, ie); is_multi = 1; break; case WLAN_EID_RSN: case WLAN_EID_SUPP_RATES: case WLAN_EID_EXT_SUPP_RATES: old_ie = wpa_bss_get_ie(old, ie); - new_ie = wpa_scan_get_ie(new, ie); + new_ie = wpa_scan_get_ie(new_res, ie); is_multi = 0; break; default: @@ -419,15 +516,15 @@ static int are_ies_equal(const struct wpa_bss *old, static u32 wpa_bss_compare_res(const struct wpa_bss *old, - const struct wpa_scan_res *new) + const struct wpa_scan_res *new_res) { u32 changes = 0; - int caps_diff = old->caps ^ new->caps; + int caps_diff = old->caps ^ new_res->caps; - if (old->freq != new->freq) + if (old->freq != new_res->freq) changes |= WPA_BSS_FREQ_CHANGED_FLAG; - if (old->level != new->level) + if (old->level != new_res->level) changes |= WPA_BSS_SIGNAL_CHANGED_FLAG; if (caps_diff & IEEE80211_CAP_PRIVACY) @@ -436,22 +533,22 @@ static u32 wpa_bss_compare_res(const struct wpa_bss *old, if (caps_diff & IEEE80211_CAP_IBSS) changes |= WPA_BSS_MODE_CHANGED_FLAG; - if (old->ie_len == new->ie_len && - os_memcmp(old + 1, new + 1, old->ie_len) == 0) + if (old->ie_len == new_res->ie_len && + os_memcmp(old + 1, new_res + 1, old->ie_len) == 0) return changes; changes |= WPA_BSS_IES_CHANGED_FLAG; - if (!are_ies_equal(old, new, WPA_IE_VENDOR_TYPE)) + if (!are_ies_equal(old, new_res, WPA_IE_VENDOR_TYPE)) changes |= WPA_BSS_WPAIE_CHANGED_FLAG; - if (!are_ies_equal(old, new, WLAN_EID_RSN)) + if (!are_ies_equal(old, new_res, WLAN_EID_RSN)) changes |= WPA_BSS_RSNIE_CHANGED_FLAG; - if (!are_ies_equal(old, new, WPS_IE_VENDOR_TYPE)) + if (!are_ies_equal(old, new_res, WPS_IE_VENDOR_TYPE)) changes |= WPA_BSS_WPS_CHANGED_FLAG; - if (!are_ies_equal(old, new, WLAN_EID_SUPP_RATES) || - !are_ies_equal(old, new, WLAN_EID_EXT_SUPP_RATES)) + if (!are_ies_equal(old, new_res, WLAN_EID_SUPP_RATES) || + !are_ies_equal(old, new_res, WLAN_EID_EXT_SUPP_RATES)) changes |= WPA_BSS_RATES_CHANGED_FLAG; return changes; @@ -487,6 +584,8 @@ static void notify_bss_changes(struct wpa_supplicant *wpa_s, u32 changes, if (changes & WPA_BSS_RATES_CHANGED_FLAG) wpas_notify_bss_rates_changed(wpa_s, bss->id); + + wpas_notify_bss_seen(wpa_s, bss->id); } @@ -497,6 +596,9 @@ wpa_bss_update(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, u32 changes; changes = wpa_bss_compare_res(bss, res); + if (changes & WPA_BSS_FREQ_CHANGED_FLAG) + wpa_printf(MSG_DEBUG, "BSS: " MACSTR " changed freq %d --> %d", + MAC2STR(bss->bssid), bss->freq, res->freq); bss->scan_miss_count = 0; bss->last_update_idx = wpa_s->bss_update_idx; wpa_bss_copy_res(bss, res, fetch_time); @@ -539,6 +641,7 @@ wpa_bss_update(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, } if (wpa_s->current_bss == bss) wpa_s->current_bss = nbss; + wpa_bss_update_pending_connect(wpa_s, bss, nbss); bss = nbss; os_memcpy(bss + 1, res + 1, res->ie_len + res->beacon_ie_len); @@ -589,7 +692,7 @@ void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, struct wpa_scan_res *res, struct os_reltime *fetch_time) { - const u8 *ssid, *p2p; + const u8 *ssid, *p2p, *mesh; struct wpa_bss *bss; if (wpa_s->conf->ignore_old_scan_res) { @@ -614,7 +717,7 @@ void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, MACSTR, MAC2STR(res->bssid)); return; } - if (ssid[1] > 32) { + if (ssid[1] > SSID_MAX_LEN) { wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Too long SSID IE included for " MACSTR, MAC2STR(res->bssid)); return; @@ -639,6 +742,11 @@ void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, /* TODO: add option for ignoring BSSes we are not interested in * (to save memory) */ + + mesh = wpa_scan_get_ie(res, WLAN_EID_MESH_ID); + if (mesh && mesh[1] <= SSID_MAX_LEN) + ssid = mesh; + bss = wpa_bss_get(wpa_s, res->bssid, ssid + 2, ssid[1]); if (bss == NULL) bss = wpa_bss_add(wpa_s, ssid + 2, ssid[1], res, fetch_time); @@ -672,7 +780,8 @@ void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, wpa_s->last_scan_res_size = siz; } - wpa_s->last_scan_res[wpa_s->last_scan_res_used++] = bss; + if (wpa_s->last_scan_res) + wpa_s->last_scan_res[wpa_s->last_scan_res_used++] = bss; } @@ -733,7 +842,7 @@ void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info, struct wpa_bss *bss, *n; os_get_reltime(&wpa_s->last_scan); - if (!new_scan) + if ((info && info->aborted) || !new_scan) return; /* do not expire entries without new scan */ dl_list_for_each_safe(bss, n, &wpa_s->bss, struct wpa_bss, list) { @@ -784,16 +893,6 @@ void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age) } -static void wpa_bss_timeout(void *eloop_ctx, void *timeout_ctx) -{ - struct wpa_supplicant *wpa_s = eloop_ctx; - - wpa_bss_flush_by_age(wpa_s, wpa_s->conf->bss_expiration_age); - eloop_register_timeout(WPA_BSS_EXPIRATION_PERIOD, 0, - wpa_bss_timeout, wpa_s, NULL); -} - - /** * wpa_bss_init - Initialize BSS table * @wpa_s: Pointer to wpa_supplicant data @@ -806,8 +905,6 @@ int wpa_bss_init(struct wpa_supplicant *wpa_s) { dl_list_init(&wpa_s->bss); dl_list_init(&wpa_s->bss_id); - eloop_register_timeout(WPA_BSS_EXPIRATION_PERIOD, 0, - wpa_bss_timeout, wpa_s, NULL); return 0; } @@ -820,6 +917,8 @@ void wpa_bss_flush(struct wpa_supplicant *wpa_s) { struct wpa_bss *bss, *n; + wpa_s->clear_driver_scan_cache = 1; + if (wpa_s->bss.next == NULL) return; /* BSS table not yet initialized */ @@ -837,7 +936,6 @@ void wpa_bss_flush(struct wpa_supplicant *wpa_s) */ void wpa_bss_deinit(struct wpa_supplicant *wpa_s) { - eloop_cancel_timeout(wpa_bss_timeout, wpa_s, NULL); wpa_bss_flush(wpa_s); } @@ -964,20 +1062,7 @@ struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s, */ const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie) { - const u8 *end, *pos; - - pos = (const u8 *) (bss + 1); - end = pos + bss->ie_len; - - while (pos + 1 < end) { - if (pos + 2 + pos[1] > end) - break; - if (pos[0] == ie) - return pos; - pos += 2 + pos[1]; - } - - return NULL; + return get_ie((const u8 *) (bss + 1), bss->ie_len, ie); } @@ -997,8 +1082,8 @@ const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type) pos = (const u8 *) (bss + 1); end = pos + bss->ie_len; - while (pos + 1 < end) { - if (pos + 2 + pos[1] > end) + while (end - pos > 1) { + if (2 + pos[1] > end - pos) break; if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && vendor_type == WPA_GET_BE32(&pos[2])) @@ -1034,8 +1119,8 @@ const u8 * wpa_bss_get_vendor_ie_beacon(const struct wpa_bss *bss, pos += bss->ie_len; end = pos + bss->beacon_ie_len; - while (pos + 1 < end) { - if (pos + 2 + pos[1] > end) + while (end - pos > 1) { + if (2 + pos[1] > end - pos) break; if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && vendor_type == WPA_GET_BE32(&pos[2])) @@ -1070,8 +1155,8 @@ struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss, pos = (const u8 *) (bss + 1); end = pos + bss->ie_len; - while (pos + 1 < end) { - if (pos + 2 + pos[1] > end) + while (end - pos > 1) { + if (2 + pos[1] > end - pos) break; if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && vendor_type == WPA_GET_BE32(&pos[2])) @@ -1115,8 +1200,8 @@ struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss, pos += bss->ie_len; end = pos + bss->beacon_ie_len; - while (pos + 1 < end) { - if (pos + 2 + pos[1] > end) + while (end - pos > 1) { + if (2 + pos[1] > end - pos) break; if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 && vendor_type == WPA_GET_BE32(&pos[2]))