static int wpa_get_beacon_ie(struct wpa_supplicant *wpa_s) { int ret = 0; struct wpa_bss *curr = NULL, *bss; struct wpa_ssid *ssid = wpa_s->current_ssid; const u8 *ie; dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { if (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) != 0) continue; if (ssid == NULL || ((bss->ssid_len == ssid->ssid_len && os_memcmp(bss->ssid, ssid->ssid, ssid->ssid_len) == 0) || ssid->ssid_len == 0)) { curr = bss; break; } } if (curr) { ie = wpa_bss_get_vendor_ie(curr, WPA_IE_VENDOR_TYPE); if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0)) ret = -1; ie = wpa_bss_get_ie(curr, WLAN_EID_RSN); if (wpa_sm_set_ap_rsn_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0)) ret = -1; } else { ret = -1; } return ret; }
static void ppdp_process_bss(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) { const u8 *pos = wpa_bss_get_vendor_ie(bss, PPDP_OUI); if (pos == NULL) return; const int len = pos[1]; size_t expected = PPDP_OUI_LEN + 2*PPDP_NONCE_LEN + PPDP_RSSID_LEN + PPDP_MSGAUTH_LEN; if (len != expected) { wpa_printf(MSG_DEBUG, "PPDP: Invalid message (length %u, expected %u)", len, expected); return; } pos += 2 + 4; // skip const u8 *sta_nonce = pos; pos += PPDP_NONCE_LEN; const u8 *ap_nonce = pos; pos += PPDP_NONCE_LEN; const u8 *erssid = pos; pos += PPDP_RSSID_LEN; const u8 *msgauth = pos; pos += PPDP_MSGAUTH_LEN; //wpabuf_free(buf); ppdp_handle_response(wpa_s, bss->bssid, sta_nonce, ap_nonce, erssid, msgauth); }
int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, struct wpa_bss *bss) { if (!wpa_s->conf->hs20 || !ssid) return 0; if (ssid->parent_cred) return 1; if (bss && !wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE)) return 0; /* * This may catch some non-Hotspot 2.0 cases, but it is safer to do that * than cause Hotspot 2.0 connections without indication element getting * added. Non-Hotspot 2.0 APs should ignore the unknown vendor element. */ if (!(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X)) return 0; if (!(ssid->pairwise_cipher & WPA_CIPHER_CCMP)) return 0; if (ssid->proto != WPA_PROTO_RSN) return 0; return 1; }
struct wpabuf * mbo_build_anqp_buf(struct wpa_supplicant *wpa_s, struct wpa_bss *bss) { struct wpabuf *anqp_buf; u8 *len_pos; if (!wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE)) { wpa_printf(MSG_INFO, "MBO: " MACSTR " does not support MBO - cannot request MBO ANQP elements from it", MAC2STR(bss->bssid)); return NULL; } anqp_buf = wpabuf_alloc(10); if (!anqp_buf) return NULL; len_pos = gas_anqp_add_element(anqp_buf, ANQP_VENDOR_SPECIFIC); wpabuf_put_be24(anqp_buf, OUI_WFA); wpabuf_put_u8(anqp_buf, MBO_ANQP_OUI_TYPE); wpabuf_put_u8(anqp_buf, MBO_ANQP_SUBTYPE_CELL_CONN_PREF); gas_anqp_set_element_len(anqp_buf, len_pos); return anqp_buf; }
static int are_ies_equal(const struct wpa_bss *old, const struct wpa_scan_res *new_res, u32 ie) { const u8 *old_ie, *new_ie; struct wpabuf *old_ie_buff = NULL; struct wpabuf *new_ie_buff = NULL; int new_ie_len, old_ie_len, ret, is_multi; switch (ie) { case WPA_IE_VENDOR_TYPE: old_ie = wpa_bss_get_vendor_ie(old, 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_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_res, ie); is_multi = 0; break; default: wpa_printf(MSG_DEBUG, "bss: %s: cannot compare IEs", __func__); return 0; } if (is_multi) { /* in case of multiple IEs stored in buffer */ old_ie = old_ie_buff ? wpabuf_head_u8(old_ie_buff) : NULL; new_ie = new_ie_buff ? wpabuf_head_u8(new_ie_buff) : NULL; old_ie_len = old_ie_buff ? wpabuf_len(old_ie_buff) : 0; new_ie_len = new_ie_buff ? wpabuf_len(new_ie_buff) : 0; } else { /* in case of single IE */ old_ie_len = old_ie ? old_ie[1] + 2 : 0; new_ie_len = new_ie ? new_ie[1] + 2 : 0; } if (!old_ie || !new_ie) ret = !old_ie && !new_ie; else ret = (old_ie_len == new_ie_len && os_memcmp(old_ie, new_ie, old_ie_len) == 0); wpabuf_free(old_ie_buff); wpabuf_free(new_ie_buff); return ret; }
const u8 * wpas_mbo_get_bss_attr(struct wpa_bss *bss, enum mbo_attr_id attr) { const u8 *mbo, *end; if (!bss) return NULL; mbo = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE); if (!mbo) return NULL; end = mbo + 2 + mbo[1]; mbo += MBO_IE_HEADER; return get_ie(mbo, end - mbo, attr); }
void hs20_configure_frame_filters(struct wpa_supplicant *wpa_s) { struct wpa_bss *bss = wpa_s->current_bss; u8 *bssid = wpa_s->bssid; const u8 *ie; const u8 *ext_capa; u32 filter = 0; if (!bss || !is_hs20_network(wpa_s, wpa_s->current_ssid, bss)) { wpa_printf(MSG_DEBUG, "Not configuring frame filtering - BSS " MACSTR " is not a Hotspot 2.0 network", MAC2STR(bssid)); return; } ie = wpa_bss_get_vendor_ie(bss, HS20_IE_VENDOR_TYPE); /* Check if DGAF disabled bit is zero (5th byte in the IE) */ if (!ie || ie[1] < 5) wpa_printf(MSG_DEBUG, "Not configuring frame filtering - Can't extract DGAF bit"); else if (!(ie[6] & HS20_DGAF_DISABLED)) filter |= WPA_DATA_FRAME_FILTER_FLAG_GTK; ext_capa = wpa_bss_get_ie(bss, WLAN_EID_EXT_CAPAB); if (!ext_capa || ext_capa[1] < 2) { wpa_printf(MSG_DEBUG, "Not configuring frame filtering - Can't extract Proxy ARP bit"); return; } /* Check if Proxy ARP is enabled (2nd byte in the IE) */ if (ext_capa[3] & BIT(4)) filter |= WPA_DATA_FRAME_FILTER_FLAG_ARP | WPA_DATA_FRAME_FILTER_FLAG_NA; wpa_drv_configure_frame_filters(wpa_s, filter); }
static void wpas_mbo_send_wnm_notification(struct wpa_supplicant *wpa_s, const u8 *data, size_t len) { struct wpabuf *buf; int res; /* * Send WNM-Notification Request frame only in case of a change in * non-preferred channels list during association, if the AP supports * MBO. */ if (wpa_s->wpa_state != WPA_COMPLETED || !wpa_s->current_bss || !wpa_bss_get_vendor_ie(wpa_s->current_bss, MBO_IE_VENDOR_TYPE)) return; buf = wpabuf_alloc(4 + len); if (!buf) return; wpabuf_put_u8(buf, WLAN_ACTION_WNM); wpabuf_put_u8(buf, WNM_NOTIFICATION_REQ); wpa_s->mbo_wnm_token++; if (wpa_s->mbo_wnm_token == 0) wpa_s->mbo_wnm_token++; wpabuf_put_u8(buf, wpa_s->mbo_wnm_token); wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); /* Type */ wpabuf_put_data(buf, data, len); res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, wpa_s->own_addr, wpa_s->bssid, wpabuf_head(buf), wpabuf_len(buf), 0); if (res < 0) wpa_printf(MSG_DEBUG, "Failed to send WNM-Notification Request frame with non-preferred channel list"); wpabuf_free(buf); }
void sme_authenticate(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, struct wpa_ssid *ssid) { 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 */ int i, bssid_changed; #if defined(ANDROID_P2P) && defined(WIFI_EAGLE) int freq = 0; #endif /* ANDROID_P2P && WIFI_EAGLE */ if (bss == NULL) { wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " "the network"); return; } wpa_s->current_bss = bss; os_memset(¶ms, 0, sizeof(params)); wpa_s->reassociate = 0; params.freq = bss->freq; params.bssid = bss->bssid; params.ssid = bss->ssid; params.ssid_len = bss->ssid_len; params.p2p = ssid->p2p_group; if (wpa_s->sme.ssid_len != params.ssid_len || os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) wpa_s->sme.prev_bssid_set = 0; wpa_s->sme.freq = params.freq; os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); wpa_s->sme.ssid_len = params.ssid_len; 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 = WPA_AUTH_ALG_LEAP; else params.auth_alg |= WPA_AUTH_ALG_LEAP; } } #endif /* IEEE8021X_EAPOL */ wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", params.auth_alg); if (ssid->auth_alg) { params.auth_alg = ssid->auth_alg; wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " "0x%x", params.auth_alg); } for (i = 0; i < NUM_WEP_KEYS; i++) { if (ssid->wep_key_len[i]) params.wep_key[i] = ssid->wep_key[i]; params.wep_key_len[i] = ssid->wep_key_len[i]; } params.wep_tx_keyidx = ssid->wep_tx_keyidx; bssid_changed = !is_zero_ether_addr(wpa_s->bssid); os_memset(wpa_s->bssid, 0, ETH_ALEN); os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); if (bssid_changed) wpas_notify_bssid_changed(wpa_s); if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || wpa_bss_get_ie(bss, WLAN_EID_RSN)) && wpa_key_mgmt_wpa(ssid->key_mgmt)) { int try_opportunistic; try_opportunistic = ssid->proactive_key_caching && (ssid->proto & WPA_PROTO_RSN); if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, wpa_s->current_ssid, try_opportunistic) == 0) eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); if (wpa_supplicant_set_suites(wpa_s, bss, ssid, wpa_s->sme.assoc_req_ie, &wpa_s->sme.assoc_req_ie_len)) { wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " "key management and encryption suites"); return; } } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { /* * Both WPA and non-WPA IEEE 802.1X enabled in configuration - * use non-WPA since the scan results did not indicate that the * AP is using WPA or WPA2. */ wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); wpa_s->sme.assoc_req_ie_len = 0; } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, wpa_s->sme.assoc_req_ie, &wpa_s->sme.assoc_req_ie_len)) { wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " "key management and encryption suites (no " "scan results)"); return; } #ifdef CONFIG_WPS } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { struct wpabuf *wps_ie; wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_s->sme.assoc_req_ie)) { wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), wpa_s->sme.assoc_req_ie_len); } else wpa_s->sme.assoc_req_ie_len = 0; wpabuf_free(wps_ie); wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); #endif /* CONFIG_WPS */ } else { wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); wpa_s->sme.assoc_req_ie_len = 0; } #ifdef CONFIG_IEEE80211R 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, ie, ie ? 2 + ie[1] : 0); if (md) { /* Prepare for the next transition */ wpa_ft_prepare_auth_request(wpa_s->wpa, ie); } if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { if (wpa_s->sme.assoc_req_ie_len + 5 < sizeof(wpa_s->sme.assoc_req_ie)) { struct rsn_mdie *mdie; u8 *pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; *pos++ = WLAN_EID_MOBILITY_DOMAIN; *pos++ = sizeof(*mdie); mdie = (struct rsn_mdie *) pos; os_memcpy(mdie->mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); 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 && wpa_sm_has_ptk(wpa_s->wpa)) { wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " "over-the-air"); 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 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 && _ie.capabilities & (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " "MFP: require MFP"); wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; } } #endif /* CONFIG_IEEE80211W */ #ifdef CONFIG_P2P if (wpa_s->global->p2p) { u8 *pos; size_t len; int res; 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, ssid->p2p_group); if (res >= 0) wpa_s->sme.assoc_req_ie_len += res; } #endif /* CONFIG_P2P */ #ifdef CONFIG_HS20 if (wpa_s->conf->hs20) { struct wpabuf *hs20; hs20 = wpabuf_alloc(20); if (hs20) { wpas_hs20_add_indication(hs20); os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len, wpabuf_head(hs20), wpabuf_len(hs20)); wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); wpabuf_free(hs20); } } #endif /* CONFIG_HS20 */ #ifdef CONFIG_INTERWORKING if (wpa_s->conf->interworking) { u8 *pos = wpa_s->sme.assoc_req_ie; if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) pos += 2 + pos[1]; os_memmove(pos + 6, pos, wpa_s->sme.assoc_req_ie_len - (pos - wpa_s->sme.assoc_req_ie)); wpa_s->sme.assoc_req_ie_len += 6; *pos++ = WLAN_EID_EXT_CAPAB; *pos++ = 4; *pos++ = 0x00; *pos++ = 0x00; *pos++ = 0x00; *pos++ = 0x80; /* Bit 31 - Interworking */ } #endif /* CONFIG_INTERWORKING */ wpa_supplicant_cancel_sched_scan(wpa_s); wpa_supplicant_cancel_scan(wpa_s); wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); wpa_clear_keys(wpa_s, bss->bssid); wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); old_ssid = wpa_s->current_ssid; wpa_s->current_ssid = ssid; wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); wpa_supplicant_initiate_eapol(wpa_s); if (old_ssid != wpa_s->current_ssid) wpas_notify_network_changed(wpa_s); wpa_s->sme.auth_alg = params.auth_alg; #if defined(ANDROID_P2P) && defined(WIFI_EAGLE) /* If multichannel concurrency is not supported, check for any frequency * conflict and take appropriate action. */ wpa_printf(MSG_DEBUG, "%s EAGLE: Priority choose", __func__); if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) && ((freq = wpa_drv_shared_freq(wpa_s)) > 0) && (freq != params.freq)) { wpa_printf(MSG_DEBUG, "Shared interface with conflicting frequency found (%d != %d)" , freq, params.freq); if (wpas_p2p_handle_frequency_conflicts(wpa_s, params.freq) < 0) { /* Handling conflicts failed. Disable the current connect req and * notify the userspace to take appropriate action */ wpa_printf(MSG_DEBUG, "proiritize is not set. Notifying user space to handle the case"); wpa_supplicant_disable_network(wpa_s, ssid); wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id); os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); return; } } #endif /* ANDROID_P2P && WIFI_EAGLE */ if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " "driver failed"); wpas_connection_failed(wpa_s, bss->bssid); wpa_supplicant_mark_disassoc(wpa_s); return; } eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, NULL); /* * Association will be started based on the authentication event from * the driver. */ }
static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, const struct wps_credential *cred) { struct wpa_driver_capa capa; struct wpa_bss *bss; const u8 *ie; struct wpa_ie_data adv; int wpa2 = 0, ccmp = 0; /* * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in * case they are configured for mixed mode operation (WPA+WPA2 and * TKIP+CCMP). Try to use scan results to figure out whether the AP * actually supports stronger security and select that if the client * has support for it, too. */ if (wpa_drv_get_capa(wpa_s, &capa)) return; /* Unknown what driver supports */ bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len); if (bss == NULL) { wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS " "table - use credential as-is"); return; } wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table"); ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) { wpa2 = 1; if (adv.pairwise_cipher & WPA_CIPHER_CCMP) ccmp = 1; } else { ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 && adv.pairwise_cipher & WPA_CIPHER_CCMP) ccmp = 1; } if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) && (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) { /* * TODO: This could be the initial AP configuration and the * Beacon contents could change shortly. Should request a new * scan and delay addition of the network until the updated * scan results are available. */ wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA " "support - use credential as-is"); return; } if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && (ssid->pairwise_cipher & WPA_CIPHER_TKIP) && (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) { wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential " "based on scan results"); if (wpa_s->conf->ap_scan == 1) ssid->pairwise_cipher |= WPA_CIPHER_CCMP; else ssid->pairwise_cipher = WPA_CIPHER_CCMP; } if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) && (ssid->proto & WPA_PROTO_WPA) && (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) { wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential " "based on scan results"); if (wpa_s->conf->ap_scan == 1) ssid->proto |= WPA_PROTO_RSN; else ssid->proto = WPA_PROTO_RSN; } }
static void sme_send_authentication(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, struct wpa_ssid *ssid, int start) { 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 */ int i, bssid_changed; struct wpabuf *resp = NULL; u8 ext_capab[18]; int ext_capab_len; int skip_auth; if (bss == NULL) { wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " "the network"); wpas_connect_work_done(wpa_s); return; } skip_auth = wpa_s->conf->reassoc_same_bss_optim && wpa_s->reassoc_same_bss; wpa_s->current_bss = bss; os_memset(¶ms, 0, sizeof(params)); wpa_s->reassociate = 0; params.freq = bss->freq; params.bssid = bss->bssid; params.ssid = bss->ssid; params.ssid_len = bss->ssid_len; params.p2p = ssid->p2p_group; if (wpa_s->sme.ssid_len != params.ssid_len || os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) wpa_s->sme.prev_bssid_set = 0; wpa_s->sme.freq = params.freq; os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); wpa_s->sme.ssid_len = params.ssid_len; 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 = WPA_AUTH_ALG_LEAP; else params.auth_alg |= WPA_AUTH_ALG_LEAP; } } #endif /* IEEE8021X_EAPOL */ wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", params.auth_alg); if (ssid->auth_alg) { params.auth_alg = ssid->auth_alg; wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " "0x%x", params.auth_alg); } #ifdef CONFIG_SAE wpa_s->sme.sae_pmksa_caching = 0; if (wpa_key_mgmt_sae(ssid->key_mgmt)) { const u8 *rsn; struct wpa_ie_data ied; rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); if (!rsn) { wpa_dbg(wpa_s, MSG_DEBUG, "SAE enabled, but target BSS does not advertise RSN"); } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 && wpa_key_mgmt_sae(ied.key_mgmt)) { wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg"); params.auth_alg = WPA_AUTH_ALG_SAE; } else { wpa_dbg(wpa_s, MSG_DEBUG, "SAE enabled, but target BSS does not advertise SAE AKM for RSN"); } } #endif /* CONFIG_SAE */ for (i = 0; i < NUM_WEP_KEYS; i++) { if (ssid->wep_key_len[i]) params.wep_key[i] = ssid->wep_key[i]; params.wep_key_len[i] = ssid->wep_key_len[i]; } params.wep_tx_keyidx = ssid->wep_tx_keyidx; bssid_changed = !is_zero_ether_addr(wpa_s->bssid); os_memset(wpa_s->bssid, 0, ETH_ALEN); os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); if (bssid_changed) wpas_notify_bssid_changed(wpa_s); if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || wpa_bss_get_ie(bss, WLAN_EID_RSN)) && wpa_key_mgmt_wpa(ssid->key_mgmt)) { int try_opportunistic; try_opportunistic = (ssid->proactive_key_caching < 0 ? wpa_s->conf->okc : ssid->proactive_key_caching) && (ssid->proto & WPA_PROTO_RSN); if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, wpa_s->current_ssid, try_opportunistic) == 0) eapol_sm_notify_pmkid_attempt(wpa_s->eapol); wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); if (wpa_supplicant_set_suites(wpa_s, bss, ssid, wpa_s->sme.assoc_req_ie, &wpa_s->sme.assoc_req_ie_len)) { wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " "key management and encryption suites"); wpas_connect_work_done(wpa_s); return; } } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { /* * Both WPA and non-WPA IEEE 802.1X enabled in configuration - * use non-WPA since the scan results did not indicate that the * AP is using WPA or WPA2. */ wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); wpa_s->sme.assoc_req_ie_len = 0; } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, wpa_s->sme.assoc_req_ie, &wpa_s->sme.assoc_req_ie_len)) { wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " "key management and encryption suites (no " "scan results)"); wpas_connect_work_done(wpa_s); return; } #ifdef CONFIG_WPS } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { struct wpabuf *wps_ie; wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_s->sme.assoc_req_ie)) { wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), wpa_s->sme.assoc_req_ie_len); } else wpa_s->sme.assoc_req_ie_len = 0; wpabuf_free(wps_ie); wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); #endif /* CONFIG_WPS */ } else { wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); wpa_s->sme.assoc_req_ie_len = 0; } #ifdef CONFIG_IEEE80211R 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, ie, ie ? 2 + ie[1] : 0); if (md) { /* Prepare for the next transition */ wpa_ft_prepare_auth_request(wpa_s->wpa, ie); } if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { if (wpa_s->sme.assoc_req_ie_len + 5 < sizeof(wpa_s->sme.assoc_req_ie)) { struct rsn_mdie *mdie; u8 *pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; *pos++ = WLAN_EID_MOBILITY_DOMAIN; *pos++ = sizeof(*mdie); mdie = (struct rsn_mdie *) pos; os_memcpy(mdie->mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); 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 && wpa_sm_has_ptk(wpa_s->wpa)) { wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " "over-the-air"); 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 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid); if (wpa_s->sme.mfp != 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 && _ie.capabilities & (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " "MFP: require MFP"); wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; } } #endif /* CONFIG_IEEE80211W */ #ifdef CONFIG_P2P if (wpa_s->global->p2p) { u8 *pos; size_t len; int res; 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, ssid->p2p_group); if (res >= 0) wpa_s->sme.assoc_req_ie_len += res; } #endif /* CONFIG_P2P */ #ifdef CONFIG_HS20 if (is_hs20_network(wpa_s, ssid, bss)) { struct wpabuf *hs20; hs20 = wpabuf_alloc(20); if (hs20) { int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid); size_t len; wpas_hs20_add_indication(hs20, pps_mo_id); len = sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len; if (wpabuf_len(hs20) <= len) { os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len, wpabuf_head(hs20), wpabuf_len(hs20)); wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); } wpabuf_free(hs20); } } #endif /* CONFIG_HS20 */ ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, sizeof(ext_capab)); if (ext_capab_len > 0) { u8 *pos = wpa_s->sme.assoc_req_ie; if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) pos += 2 + pos[1]; os_memmove(pos + ext_capab_len, pos, wpa_s->sme.assoc_req_ie_len - (pos - wpa_s->sme.assoc_req_ie)); wpa_s->sme.assoc_req_ie_len += ext_capab_len; os_memcpy(pos, ext_capab, ext_capab_len); } if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) { struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]; size_t len; len = sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len; if (wpabuf_len(buf) <= len) { os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len, wpabuf_head(buf), wpabuf_len(buf)); wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf); } } sme_auth_handle_rrm(wpa_s, bss); #ifdef CONFIG_SAE if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE && pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0) { wpa_dbg(wpa_s, MSG_DEBUG, "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication"); params.auth_alg = WPA_AUTH_ALG_OPEN; wpa_s->sme.sae_pmksa_caching = 1; } if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) { if (start) resp = sme_auth_build_sae_commit(wpa_s, ssid, bss->bssid); else resp = sme_auth_build_sae_confirm(wpa_s); if (resp == NULL) { wpas_connection_failed(wpa_s, bss->bssid, 1); return; } params.sae_data = wpabuf_head(resp); params.sae_data_len = wpabuf_len(resp); wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED; } #endif /* CONFIG_SAE */ wpa_supplicant_cancel_sched_scan(wpa_s); wpa_supplicant_cancel_scan(wpa_s); wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); wpa_clear_keys(wpa_s, bss->bssid); wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); old_ssid = wpa_s->current_ssid; wpa_s->current_ssid = ssid; wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); wpa_supplicant_initiate_eapol(wpa_s); if (old_ssid != wpa_s->current_ssid) wpas_notify_network_changed(wpa_s); #ifdef CONFIG_P2P /* * If multi-channel concurrency is not supported, check for any * frequency conflict. In case of any frequency conflict, remove the * least prioritized connection. */ if (wpa_s->num_multichan_concurrent < 2) { int freq, num; num = get_shared_radio_freqs(wpa_s, &freq, 1); if (num > 0 && freq > 0 && freq != params.freq) { wpa_printf(MSG_DEBUG, "Conflicting frequency found (%d != %d)", freq, params.freq); if (wpas_p2p_handle_frequency_conflicts(wpa_s, params.freq, ssid) < 0) { wpas_connection_failed(wpa_s, bss->bssid, 0); wpa_supplicant_mark_disassoc(wpa_s); wpabuf_free(resp); wpas_connect_work_done(wpa_s); return; } } } #endif /* CONFIG_P2P */ if (skip_auth) { wpa_msg(wpa_s, MSG_DEBUG, "SME: Skip authentication step on reassoc-to-same-BSS"); wpabuf_free(resp); sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN); return; } wpa_s->sme.auth_alg = params.auth_alg; if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " "driver failed"); wpas_connection_failed(wpa_s, bss->bssid, 1); wpa_supplicant_mark_disassoc(wpa_s); wpabuf_free(resp); wpas_connect_work_done(wpa_s); return; } eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, NULL); /* * Association will be started based on the authentication event from * the driver. */ wpabuf_free(resp); }
void sme_authenticate(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, struct wpa_ssid *ssid) { 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 */ int i, bssid_changed; if (bss == NULL) { wpa_printf(MSG_ERROR, "SME: No scan result available for the " "network"); return; } wpa_s->current_bss = bss; os_memset(¶ms, 0, sizeof(params)); wpa_s->reassociate = 0; params.freq = bss->freq; params.bssid = bss->bssid; params.ssid = bss->ssid; params.ssid_len = bss->ssid_len; if (wpa_s->sme.ssid_len != params.ssid_len || os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) wpa_s->sme.prev_bssid_set = 0; wpa_s->sme.freq = params.freq; os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); wpa_s->sme.ssid_len = params.ssid_len; 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 = WPA_AUTH_ALG_LEAP; else 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 = ssid->auth_alg; wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x", params.auth_alg); } for (i = 0; i < NUM_WEP_KEYS; i++) { if (ssid->wep_key_len[i]) params.wep_key[i] = ssid->wep_key[i]; params.wep_key_len[i] = ssid->wep_key_len[i]; } params.wep_tx_keyidx = ssid->wep_tx_keyidx; bssid_changed = !is_zero_ether_addr(wpa_s->bssid); os_memset(wpa_s->bssid, 0, ETH_ALEN); os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); if (bssid_changed) wpas_notify_bssid_changed(wpa_s); 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 | WPA_KEY_MGMT_IEEE8021X_SHA256 | WPA_KEY_MGMT_PSK_SHA256))) { int try_opportunistic; try_opportunistic = ssid->proactive_key_caching && (ssid->proto & WPA_PROTO_RSN); if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, wpa_s->current_ssid, try_opportunistic) == 0) eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); if (wpa_supplicant_set_suites(wpa_s, bss, ssid, wpa_s->sme.assoc_req_ie, &wpa_s->sme.assoc_req_ie_len)) { wpa_printf(MSG_WARNING, "SME: Failed to set WPA key " "management and encryption suites"); return; } } else if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 | WPA_KEY_MGMT_IEEE8021X_SHA256)) { wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, wpa_s->sme.assoc_req_ie, &wpa_s->sme.assoc_req_ie_len)) { wpa_printf(MSG_WARNING, "SME: Failed to set WPA key " "management and encryption suites (no scan " "results)"); return; } #ifdef CONFIG_WPS } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { struct wpabuf *wps_ie; wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_s->sme.assoc_req_ie)) { wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), wpa_s->sme.assoc_req_ie_len); } else wpa_s->sme.assoc_req_ie_len = 0; wpabuf_free(wps_ie); wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); #endif /* CONFIG_WPS */ } else { wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); wpa_s->sme.assoc_req_ie_len = 0; } #ifdef CONFIG_IEEE80211R 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, ie, ie ? 2 + ie[1] : 0); if (md) { /* Prepare for the next transition */ wpa_ft_prepare_auth_request(wpa_s->wpa, ie); } if (md && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X)) { if (wpa_s->sme.assoc_req_ie_len + 5 < sizeof(wpa_s->sme.assoc_req_ie)) { struct rsn_mdie *mdie; u8 *pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; *pos++ = WLAN_EID_MOBILITY_DOMAIN; *pos++ = sizeof(*mdie); mdie = (struct rsn_mdie *) pos; os_memcpy(mdie->mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); 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 && wpa_sm_has_ptk(wpa_s->wpa)) { wpa_printf(MSG_DEBUG, "SME: Trying to use FT " "over-the-air"); 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 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 && _ie.capabilities & (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: " "require MFP"); wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; } } #endif /* CONFIG_IEEE80211W */ wpa_supplicant_cancel_scan(wpa_s); wpa_msg(wpa_s, MSG_INFO, "Trying to authenticate with " MACSTR " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); wpa_clear_keys(wpa_s, bss->bssid); wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); old_ssid = wpa_s->current_ssid; wpa_s->current_ssid = ssid; wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); wpa_supplicant_initiate_eapol(wpa_s); 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; } /* TODO: add timeout on authentication */ /* * Association will be started based on the authentication event from * the driver. */ }
static void wnm_send_bss_transition_mgmt_resp( struct wpa_supplicant *wpa_s, u8 dialog_token, enum bss_trans_mgmt_status_code status, enum mbo_transition_reject_reason reason, u8 delay, const u8 *target_bssid) { u8 buf[2000], *pos; struct ieee80211_mgmt *mgmt; size_t len; int res; wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Response to " MACSTR " dialog_token=%u status=%u reason=%u delay=%d", MAC2STR(wpa_s->bssid), dialog_token, status, reason, delay); if (!wpa_s->current_bss) { wpa_printf(MSG_DEBUG, "WNM: Current BSS not known - drop response"); return; } mgmt = (struct ieee80211_mgmt *) buf; os_memset(&buf, 0, sizeof(buf)); os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN); os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN); os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN); mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_ACTION); mgmt->u.action.category = WLAN_ACTION_WNM; mgmt->u.action.u.bss_tm_resp.action = WNM_BSS_TRANS_MGMT_RESP; mgmt->u.action.u.bss_tm_resp.dialog_token = dialog_token; mgmt->u.action.u.bss_tm_resp.status_code = status; mgmt->u.action.u.bss_tm_resp.bss_termination_delay = delay; pos = mgmt->u.action.u.bss_tm_resp.variable; if (target_bssid) { os_memcpy(pos, target_bssid, ETH_ALEN); pos += ETH_ALEN; } else if (status == WNM_BSS_TM_ACCEPT) { /* * P802.11-REVmc clarifies that the Target BSSID field is always * present when status code is zero, so use a fake value here if * no BSSID is yet known. */ os_memset(pos, 0, ETH_ALEN); pos += ETH_ALEN; } if (status == WNM_BSS_TM_ACCEPT) pos += wnm_add_cand_list(wpa_s, pos, buf + sizeof(buf) - pos); #ifdef CONFIG_MBO if (status != WNM_BSS_TM_ACCEPT && wpa_bss_get_vendor_ie(wpa_s->current_bss, MBO_IE_VENDOR_TYPE)) { pos += wpas_mbo_ie_bss_trans_reject( wpa_s, pos, buf + sizeof(buf) - pos, reason); } #endif /* CONFIG_MBO */ len = pos - (u8 *) &mgmt->u.action.category; res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, wpa_s->own_addr, wpa_s->bssid, &mgmt->u.action.category, len, 0); if (res < 0) { wpa_printf(MSG_DEBUG, "WNM: Failed to send BSS Transition Management Response"); } }
/** * wpas_dbus_bssid_properties - Return the properties of a scanned network * @message: Pointer to incoming dbus message * @wpa_s: wpa_supplicant structure for a network interface * @res: wpa_supplicant scan result for which to get properties * Returns: a dbus message containing the properties for the requested network * * Handler function for "properties" method call of a scanned network. * Returns a dbus message containing the the properties. */ DBusMessage * wpas_dbus_bssid_properties(DBusMessage *message, struct wpa_supplicant *wpa_s, struct wpa_bss *bss) { DBusMessage *reply; DBusMessageIter iter, iter_dict; const u8 *ie; /* Dump the properties into a dbus message */ reply = dbus_message_new_method_return(message); dbus_message_iter_init_append(reply, &iter); if (!wpa_dbus_dict_open_write(&iter, &iter_dict)) goto error; if (!wpa_dbus_dict_append_byte_array(&iter_dict, "bssid", (const char *) bss->bssid, ETH_ALEN)) goto error; ie = wpa_bss_get_ie(bss, WLAN_EID_SSID); if (ie) { if (!wpa_dbus_dict_append_byte_array(&iter_dict, "ssid", (const char *) (ie + 2), ie[1])) goto error; } ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); if (ie) { if (!wpa_dbus_dict_append_byte_array(&iter_dict, "wpaie", (const char *) ie, ie[1] + 2)) goto error; } ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); if (ie) { if (!wpa_dbus_dict_append_byte_array(&iter_dict, "rsnie", (const char *) ie, ie[1] + 2)) goto error; } ie = wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE); if (ie) { if (!wpa_dbus_dict_append_byte_array(&iter_dict, "wpsie", (const char *) ie, ie[1] + 2)) goto error; } if (bss->freq) { if (!wpa_dbus_dict_append_int32(&iter_dict, "frequency", bss->freq)) goto error; } if (!wpa_dbus_dict_append_uint16(&iter_dict, "capabilities", bss->caps)) goto error; if (!(bss->flags & WPA_BSS_QUAL_INVALID) && !wpa_dbus_dict_append_int32(&iter_dict, "quality", bss->qual)) goto error; if (!(bss->flags & WPA_BSS_NOISE_INVALID) && !wpa_dbus_dict_append_int32(&iter_dict, "noise", bss->noise)) goto error; if (!(bss->flags & WPA_BSS_LEVEL_INVALID) && !wpa_dbus_dict_append_int32(&iter_dict, "level", bss->level)) goto error; if (!wpa_dbus_dict_append_int32(&iter_dict, "maxrate", wpa_bss_get_max_rate(bss) * 500000)) goto error; if (!wpa_dbus_dict_close_write(&iter, &iter_dict)) goto error; return reply; error: if (reply) dbus_message_unref(reply); return dbus_message_new_error(message, WPAS_ERROR_INTERNAL_ERROR, "an internal error occurred returning " "BSSID properties."); }
static struct wpa_bss * wpa_bss_update(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, struct wpa_scan_res *res, struct os_reltime *fetch_time) { 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); /* Move the entry to the end of the list */ dl_list_del(&bss->list); #ifdef CONFIG_P2P if (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) && !wpa_scan_get_vendor_ie(res, P2P_IE_VENDOR_TYPE)) { /* * This can happen when non-P2P station interface runs a scan * without P2P IE in the Probe Request frame. P2P GO would reply * to that with a Probe Response that does not include P2P IE. * Do not update the IEs in this BSS entry to avoid such loss of * information that may be needed for P2P operations to * determine group information. */ wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Do not update scan IEs for " MACSTR " since that would remove P2P IE information", MAC2STR(bss->bssid)); } else #endif /* CONFIG_P2P */ if (bss->ie_len + bss->beacon_ie_len >= res->ie_len + res->beacon_ie_len) { os_memcpy(bss + 1, res + 1, res->ie_len + res->beacon_ie_len); bss->ie_len = res->ie_len; bss->beacon_ie_len = res->beacon_ie_len; } else { struct wpa_bss *nbss; struct dl_list *prev = bss->list_id.prev; dl_list_del(&bss->list_id); nbss = os_realloc(bss, sizeof(*bss) + res->ie_len + res->beacon_ie_len); if (nbss) { unsigned int i; for (i = 0; i < wpa_s->last_scan_res_used; i++) { if (wpa_s->last_scan_res[i] == bss) { wpa_s->last_scan_res[i] = nbss; break; } } 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); bss->ie_len = res->ie_len; bss->beacon_ie_len = res->beacon_ie_len; } dl_list_add(prev, &bss->list_id); } if (changes & WPA_BSS_IES_CHANGED_FLAG) wpa_bss_set_hessid(bss); dl_list_add_tail(&wpa_s->bss, &bss->list); notify_bss_changes(wpa_s, changes, bss); return bss; }