HS 2.0R2: Add OSEN client implementation

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>

src/rsn_supp/wpa.c

@@ -89,7 +89,10 @@ void wpa_sm_key_request(struct wpa_sm *sm, int error, int pairwise)
 	int key_info, ver;
 	u8 bssid[ETH_ALEN], *rbuf;
 
-	if (wpa_key_mgmt_ft(sm->key_mgmt) || wpa_key_mgmt_sha256(sm->key_mgmt))
+	if (sm->key_mgmt == WPA_KEY_MGMT_OSEN)
+		ver = WPA_KEY_INFO_TYPE_AKM_DEFINED;
+	else if (wpa_key_mgmt_ft(sm->key_mgmt) ||
+		 wpa_key_mgmt_sha256(sm->key_mgmt))
 		ver = WPA_KEY_INFO_TYPE_AES_128_CMAC;
 	else if (sm->pairwise_cipher != WPA_CIPHER_TKIP)
 		ver = WPA_KEY_INFO_TYPE_HMAC_SHA1_AES;
@@ -1480,7 +1483,8 @@ static int wpa_supplicant_decrypt_key_data(struct wpa_sm *sm,
 			return -1;
 		}
 	} else if (ver == WPA_KEY_INFO_TYPE_HMAC_SHA1_AES ||
-		   ver == WPA_KEY_INFO_TYPE_AES_128_CMAC) {
+		   ver == WPA_KEY_INFO_TYPE_AES_128_CMAC ||
+		   sm->key_mgmt == WPA_KEY_MGMT_OSEN) {
 		u8 *buf;
 		if (keydatalen % 8) {
 			wpa_msg(sm->ctx->msg_ctx, MSG_WARNING,
@@ -1662,13 +1666,22 @@ int wpa_sm_rx_eapol(struct wpa_sm *sm, const u8 *src_addr,
 #if defined(CONFIG_IEEE80211R) || defined(CONFIG_IEEE80211W)
 	    ver != WPA_KEY_INFO_TYPE_AES_128_CMAC &&
 #endif /* CONFIG_IEEE80211R || CONFIG_IEEE80211W */
-	    ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES) {
+	    ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES &&
+	    sm->key_mgmt != WPA_KEY_MGMT_OSEN) {
 		wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
 			"WPA: Unsupported EAPOL-Key descriptor version %d",
 			ver);
 		goto out;
 	}
 
+	if (sm->key_mgmt == WPA_KEY_MGMT_OSEN &&
+	    ver != WPA_KEY_INFO_TYPE_AKM_DEFINED) {
+		wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
+			"OSEN: Unsupported EAPOL-Key descriptor version %d",
+			ver);
+		goto out;
+	}
+
 #ifdef CONFIG_IEEE80211R
 	if (wpa_key_mgmt_ft(sm->key_mgmt)) {
 		/* IEEE 802.11r uses a new key_info type (AES-128-CMAC). */
@@ -1681,7 +1694,8 @@ int wpa_sm_rx_eapol(struct wpa_sm *sm, const u8 *src_addr,
 #endif /* CONFIG_IEEE80211R */
 #ifdef CONFIG_IEEE80211W
 	if (wpa_key_mgmt_sha256(sm->key_mgmt)) {
-		if (ver != WPA_KEY_INFO_TYPE_AES_128_CMAC) {
+		if (ver != WPA_KEY_INFO_TYPE_AES_128_CMAC &&
+		    sm->key_mgmt != WPA_KEY_MGMT_OSEN) {
 			wpa_msg(sm->ctx->msg_ctx, MSG_INFO,
 				"WPA: AP did not use the "
 				"negotiated AES-128-CMAC");

src/rsn_supp/wpa_ie.c

@@ -222,6 +222,64 @@ static int wpa_gen_wpa_ie_rsn(u8 *rsn_ie, size_t rsn_ie_len,
 }
 
 
+#ifdef CONFIG_HS20
+static int wpa_gen_wpa_ie_osen(u8 *wpa_ie, size_t wpa_ie_len,
+			       int pairwise_cipher, int group_cipher,
+			       int key_mgmt)
+{
+	u8 *pos, *len;
+	u32 suite;
+
+	if (wpa_ie_len < 2 + 4 + RSN_SELECTOR_LEN +
+	    2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN)
+		return -1;
+
+	pos = wpa_ie;
+	*pos++ = WLAN_EID_VENDOR_SPECIFIC;
+	len = pos++; /* to be filled */
+	WPA_PUT_BE24(pos, OUI_WFA);
+	pos += 3;
+	*pos++ = HS20_OSEN_OUI_TYPE;
+
+	/* Group Data Cipher Suite */
+	suite = wpa_cipher_to_suite(WPA_PROTO_RSN, group_cipher);
+	if (suite == 0) {
+		wpa_printf(MSG_WARNING, "Invalid group cipher (%d).",
+			   group_cipher);
+		return -1;
+	}
+	RSN_SELECTOR_PUT(pos, suite);
+	pos += RSN_SELECTOR_LEN;
+
+	/* Pairwise Cipher Suite Count and List */
+	WPA_PUT_LE16(pos, 1);
+	pos += 2;
+	suite = wpa_cipher_to_suite(WPA_PROTO_RSN, pairwise_cipher);
+	if (suite == 0 ||
+	    (!wpa_cipher_valid_pairwise(pairwise_cipher) &&
+	     pairwise_cipher != WPA_CIPHER_NONE)) {
+		wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).",
+			   pairwise_cipher);
+		return -1;
+	}
+	RSN_SELECTOR_PUT(pos, suite);
+	pos += RSN_SELECTOR_LEN;
+
+	/* AKM Suite Count and List */
+	WPA_PUT_LE16(pos, 1);
+	pos += 2;
+	RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_OSEN);
+	pos += RSN_SELECTOR_LEN;
+
+	*len = pos - len - 1;
+
+	WPA_ASSERT((size_t) (pos - wpa_ie) <= wpa_ie_len);
+
+	return pos - wpa_ie;
+}
+#endif /* CONFIG_HS20 */
+
+
 /**
  * wpa_gen_wpa_ie - Generate WPA/RSN IE based on current security policy
  * @sm: Pointer to WPA state machine data from wpa_sm_init()
@@ -237,6 +295,13 @@ int wpa_gen_wpa_ie(struct wpa_sm *sm, u8 *wpa_ie, size_t wpa_ie_len)
 					  sm->group_cipher,
 					  sm->key_mgmt, sm->mgmt_group_cipher,
 					  sm);
+#ifdef CONFIG_HS20
+	else if (sm->proto == WPA_PROTO_OSEN)
+		return wpa_gen_wpa_ie_osen(wpa_ie, wpa_ie_len,
+					   sm->pairwise_cipher,
+					   sm->group_cipher,
+					   sm->key_mgmt);
+#endif /* CONFIG_HS20 */
 	else
 		return wpa_gen_wpa_ie_wpa(wpa_ie, wpa_ie_len,
 					  sm->pairwise_cipher,

wpa_supplicant/config.c

@@ -405,6 +405,8 @@ static int wpa_config_parse_proto(const struct parse_data *data,
 		else if (os_strcmp(start, "RSN") == 0 ||
 			 os_strcmp(start, "WPA2") == 0)
 			val |= WPA_PROTO_RSN;
+		else if (os_strcmp(start, "OSEN") == 0)
+			val |= WPA_PROTO_OSEN;
 		else {
 			wpa_printf(MSG_ERROR, "Line %d: invalid proto '%s'",
 				   line, start);
@@ -516,6 +518,10 @@ static int wpa_config_parse_key_mgmt(const struct parse_data *data,
 		else if (os_strcmp(start, "FT-SAE") == 0)
 			val |= WPA_KEY_MGMT_FT_SAE;
 #endif /* CONFIG_SAE */
+#ifdef CONFIG_HS20
+		else if (os_strcmp(start, "OSEN") == 0)
+			val |= WPA_KEY_MGMT_OSEN;
+#endif /* CONFIG_HS20 */
 		else {
 			wpa_printf(MSG_ERROR, "Line %d: invalid key_mgmt '%s'",
 				   line, start);

wpa_supplicant/events.c

@@ -398,6 +398,9 @@ static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 	if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 		privacy = 1;
 
+	if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
+		privacy = 1;
+
 	if (bss->caps & IEEE80211_CAP_PRIVACY)
 		return privacy;
 	return !privacy;
@@ -539,6 +542,12 @@ static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 		return 0;
 	}
 
+	if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
+	    wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
+		return 1;
+	}
+
 	if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 		wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 		return 1;
@@ -736,6 +745,7 @@ static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 	struct wpa_blacklist *e;
 	const u8 *ie;
 	struct wpa_ssid *ssid;
+	int osen;
 
 	ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 	wpa_ie_len = ie ? ie[1] : 0;
@@ -743,14 +753,18 @@ static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 	ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 	rsn_ie_len = ie ? ie[1] : 0;
 
+	ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
+	osen = ie != NULL;
+
 	wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
-		"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s",
+		"wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 		i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 		wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 		wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 		(wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 		 wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
-		" p2p" : "");
+		" p2p" : "",
+		osen ? " osen=1" : "");
 
 	e = wpa_blacklist_get(wpa_s, bss->bssid);
 	if (e) {
@@ -848,7 +862,7 @@ static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 		if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 			continue;
 
-		if (!wpa &&
+		if (!osen && !wpa &&
 		    !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 		    !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 		    !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
@@ -863,6 +877,12 @@ static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 			continue;
 		}
 
+		if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
+			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
+				"not allowed");
+			continue;
+		}
+
 		if (!wpa_supplicant_match_privacy(bss, ssid)) {
 			wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 				"mismatch");

wpa_supplicant/sme.c

@@ -757,6 +757,10 @@ void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
 		params.wpa_proto = WPA_PROTO_WPA;
 		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
 					elems.wpa_ie_len + 2);
+	} else if (elems.osen) {
+		params.wpa_proto = WPA_PROTO_OSEN;
+		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
+					elems.osen_len + 2);
 	} else
 		wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 	if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)

wpa_supplicant/wpa_supplicant.c

@@ -937,13 +937,14 @@ int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 {
 	struct wpa_ie_data ie;
 	int sel, proto;
-	const u8 *bss_wpa, *bss_rsn;
+	const u8 *bss_wpa, *bss_rsn, *bss_osen;
 
 	if (bss) {
 		bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 		bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
+		bss_osen = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 	} else
-		bss_wpa = bss_rsn = NULL;
+		bss_wpa = bss_rsn = bss_osen = NULL;
 
 	if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
 	    wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
@@ -959,11 +960,22 @@ int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 		   (ie.key_mgmt & ssid->key_mgmt)) {
 		wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
 		proto = WPA_PROTO_WPA;
+#ifdef CONFIG_HS20
+	} else if (bss_osen && (ssid->proto & WPA_PROTO_OSEN)) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using OSEN");
+		/* TODO: parse OSEN element */
+		ie.group_cipher = WPA_CIPHER_CCMP;
+		ie.pairwise_cipher = WPA_CIPHER_CCMP;
+		ie.key_mgmt = WPA_KEY_MGMT_OSEN;
+		proto = WPA_PROTO_OSEN;
+#endif /* CONFIG_HS20 */
 	} else if (bss) {
 		wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
 		return -1;
 	} else {
-		if (ssid->proto & WPA_PROTO_RSN)
+		if (ssid->proto & WPA_PROTO_OSEN)
+			proto = WPA_PROTO_OSEN;
+		else if (ssid->proto & WPA_PROTO_RSN)
 			proto = WPA_PROTO_RSN;
 		else
 			proto = WPA_PROTO_WPA;
@@ -996,7 +1008,7 @@ int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 	wpa_s->wpa_proto = proto;
 	wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
 	wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
-			 !!(ssid->proto & WPA_PROTO_RSN));
+			 !!(ssid->proto & (WPA_PROTO_RSN | WPA_PROTO_OSEN)));
 
 	if (bss || !wpa_s->ap_ies_from_associnfo) {
 		if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
@@ -1067,6 +1079,11 @@ int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 	} else if (sel & WPA_KEY_MGMT_WPA_NONE) {
 		wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
 		wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
+#ifdef CONFIG_HS20
+	} else if (sel & WPA_KEY_MGMT_OSEN) {
+		wpa_s->key_mgmt = WPA_KEY_MGMT_OSEN;
+		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: using KEY_MGMT OSEN");
+#endif /* CONFIG_HS20 */
 	} else {
 		wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select "
 			"authenticated key management type");