X-Git-Url: http://www.project-moonshot.org/gitweb/?p=mech_eap.git;a=blobdiff_plain;f=wpa_supplicant%2Fhs20_supplicant.c;h=a62c1c36af44d2298e98052e7d821bd907a7a9f0;hp=5f30313ba17d6dffc9db3722025b5540c2361eda;hb=e8afaad7fd9a7fc9a761ed2f8a117bbb6ac9c730;hpb=24c694b465ea9535436caf85c0e71d4346e15abd

diff --git a/wpa_supplicant/hs20_supplicant.c b/wpa_supplicant/hs20_supplicant.c
index 5f30313..a62c1c3 100644
--- a/wpa_supplicant/hs20_supplicant.c
+++ b/wpa_supplicant/hs20_supplicant.c
@@ -1,12 +1,13 @@
 /*
  * Copyright (c) 2009, Atheros Communications, Inc.
- * Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
+ * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
  *
  * This software may be distributed under the terms of the BSD license.
  * See README for more details.
  */
 
 #include "includes.h"
+#include <sys/stat.h>
 
 #include "common.h"
 #include "eloop.h"
@@ -14,22 +15,106 @@
 #include "common/ieee802_11_defs.h"
 #include "common/gas.h"
 #include "common/wpa_ctrl.h"
+#include "rsn_supp/wpa.h"
 #include "wpa_supplicant_i.h"
 #include "driver_i.h"
 #include "config.h"
+#include "scan.h"
 #include "bss.h"
+#include "blacklist.h"
 #include "gas_query.h"
 #include "interworking.h"
 #include "hs20_supplicant.h"
+#include "base64.h"
 
 
-void wpas_hs20_add_indication(struct wpabuf *buf)
+#define OSU_MAX_ITEMS 10
+
+struct osu_lang_string {
+	char lang[4];
+	char text[253];
+};
+
+struct osu_icon {
+	u16 width;
+	u16 height;
+	char lang[4];
+	char icon_type[256];
+	char filename[256];
+	unsigned int id;
+	unsigned int failed:1;
+};
+
+struct osu_provider {
+	u8 bssid[ETH_ALEN];
+	u8 osu_ssid[SSID_MAX_LEN];
+	u8 osu_ssid_len;
+	char server_uri[256];
+	u32 osu_methods; /* bit 0 = OMA-DM, bit 1 = SOAP-XML SPP */
+	char osu_nai[256];
+	struct osu_lang_string friendly_name[OSU_MAX_ITEMS];
+	size_t friendly_name_count;
+	struct osu_lang_string serv_desc[OSU_MAX_ITEMS];
+	size_t serv_desc_count;
+	struct osu_icon icon[OSU_MAX_ITEMS];
+	size_t icon_count;
+};
+
+
+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);
+}
+
+
+void wpas_hs20_add_indication(struct wpabuf *buf, int pps_mo_id)
 {
+	u8 conf;
+
 	wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
-	wpabuf_put_u8(buf, 5);
+	wpabuf_put_u8(buf, pps_mo_id >= 0 ? 7 : 5);
 	wpabuf_put_be24(buf, OUI_WFA);
 	wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE);
-	wpabuf_put_u8(buf, 0x00); /* Hotspot Configuration */
+	conf = HS20_VERSION;
+	if (pps_mo_id >= 0)
+		conf |= HS20_PPS_MO_ID_PRESENT;
+	wpabuf_put_u8(buf, conf);
+	if (pps_mo_id >= 0)
+		wpabuf_put_le16(buf, pps_mo_id);
 }
 
 
@@ -62,15 +147,35 @@ int is_hs20_network(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
 }
 
 
-struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
-				    size_t payload_len)
+int hs20_get_pps_mo_id(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
+{
+	struct wpa_cred *cred;
+
+	if (ssid == NULL)
+		return 0;
+
+	if (ssid->update_identifier)
+		return ssid->update_identifier;
+
+	if (ssid->parent_cred == NULL)
+		return 0;
+
+	for (cred = wpa_s->conf->cred; cred; cred = cred->next) {
+		if (ssid->parent_cred == cred)
+			return cred->update_identifier;
+	}
+
+	return 0;
+}
+
+
+void hs20_put_anqp_req(u32 stypes, const u8 *payload, size_t payload_len,
+		       struct wpabuf *buf)
 {
-	struct wpabuf *buf;
 	u8 *len_pos;
 
-	buf = gas_anqp_build_initial_req(0, 100 + payload_len);
 	if (buf == NULL)
-		return NULL;
+		return;
 
 	len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC);
 	wpabuf_put_be24(buf, OUI_WFA);
@@ -80,6 +185,11 @@ struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
 		wpabuf_put_u8(buf, 0); /* Reserved */
 		if (payload)
 			wpabuf_put_data(buf, payload, payload_len);
+	} else if (stypes == BIT(HS20_STYPE_ICON_REQUEST)) {
+		wpabuf_put_u8(buf, HS20_STYPE_ICON_REQUEST);
+		wpabuf_put_u8(buf, 0); /* Reserved */
+		if (payload)
+			wpabuf_put_data(buf, payload, payload_len);
 	} else {
 		u8 i;
 		wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST);
@@ -92,28 +202,44 @@ struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
 	gas_anqp_set_element_len(buf, len_pos);
 
 	gas_anqp_set_len(buf);
+}
+
+
+struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
+				    size_t payload_len)
+{
+	struct wpabuf *buf;
+
+	buf = gas_anqp_build_initial_req(0, 100 + payload_len);
+	if (buf == NULL)
+		return NULL;
+
+	hs20_put_anqp_req(stypes, payload, payload_len, buf);
 
 	return buf;
 }
 
 
 int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes,
-		       const u8 *payload, size_t payload_len)
+		       const u8 *payload, size_t payload_len, int inmem)
 {
 	struct wpabuf *buf;
 	int ret = 0;
 	int freq;
 	struct wpa_bss *bss;
 	int res;
+	struct icon_entry *icon_entry;
 
-	freq = wpa_s->assoc_freq;
 	bss = wpa_bss_get_bssid(wpa_s, dst);
-	if (bss) {
-		wpa_bss_anqp_unshare_alloc(bss);
-		freq = bss->freq;
-	}
-	if (freq <= 0)
+	if (!bss) {
+		wpa_printf(MSG_WARNING,
+			   "ANQP: Cannot send query to unknown BSS "
+			   MACSTR, MAC2STR(dst));
 		return -1;
+	}
+
+	wpa_bss_anqp_unshare_alloc(bss);
+	freq = bss->freq;
 
 	wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for "
 		   "subtypes 0x%x", MAC2STR(dst), stypes);
@@ -126,22 +252,309 @@ int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes,
 	if (res < 0) {
 		wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
 		wpabuf_free(buf);
-		ret = -1;
+		return -1;
 	} else
 		wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
 			   "%u", res);
 
+	if (inmem) {
+		icon_entry = os_zalloc(sizeof(struct icon_entry));
+		if (!icon_entry)
+			return -1;
+		os_memcpy(icon_entry->bssid, dst, ETH_ALEN);
+		icon_entry->file_name = os_malloc(payload_len + 1);
+		if (!icon_entry->file_name) {
+			os_free(icon_entry);
+			return -1;
+		}
+		os_memcpy(icon_entry->file_name, payload, payload_len);
+		icon_entry->file_name[payload_len] = '\0';
+		icon_entry->dialog_token = res;
+
+		dl_list_add(&wpa_s->icon_head, &icon_entry->list);
+	}
+
 	return ret;
 }
 
 
+static struct icon_entry * hs20_find_icon(struct wpa_supplicant *wpa_s,
+					  const u8 *bssid,
+					  const char *file_name)
+{
+	struct icon_entry *icon;
+
+	dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) {
+		if (os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0 &&
+		    os_strcmp(icon->file_name, file_name) == 0 && icon->image)
+			return icon;
+	}
+
+	return NULL;
+}
+
+
+int hs20_get_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
+		  const char *file_name, size_t offset, size_t size,
+		  char *reply, size_t buf_len)
+{
+	struct icon_entry *icon;
+	size_t out_size;
+	unsigned char *b64;
+	size_t b64_size;
+	int reply_size;
+
+	wpa_printf(MSG_DEBUG, "HS20: Get icon " MACSTR " %s @ %u +%u (%u)",
+		   MAC2STR(bssid), file_name, (unsigned int) offset,
+		   (unsigned int) size, (unsigned int) buf_len);
+
+	icon = hs20_find_icon(wpa_s, bssid, file_name);
+	if (!icon || !icon->image || offset >= icon->image_len)
+		return -1;
+	if (size > icon->image_len - offset)
+		size = icon->image_len - offset;
+	out_size = buf_len - 3 /* max base64 padding */;
+	if (size * 4 > out_size * 3)
+		size = out_size * 3 / 4;
+	if (size == 0)
+		return -1;
+
+	b64 = base64_encode(&icon->image[offset], size, &b64_size);
+	if (buf_len >= b64_size) {
+		os_memcpy(reply, b64, b64_size);
+		reply_size = b64_size;
+	} else {
+		reply_size = -1;
+	}
+	os_free(b64);
+	return reply_size;
+}
+
+
+static void hs20_free_icon_entry(struct icon_entry *icon)
+{
+	wpa_printf(MSG_DEBUG, "HS20: Free stored icon from " MACSTR
+		   " dialog_token=%u file_name=%s image_len=%u",
+		   MAC2STR(icon->bssid), icon->dialog_token,
+		   icon->file_name ? icon->file_name : "N/A",
+		   (unsigned int) icon->image_len);
+	os_free(icon->file_name);
+	os_free(icon->image);
+	os_free(icon);
+}
+
+
+int hs20_del_icon(struct wpa_supplicant *wpa_s, const u8 *bssid,
+		  const char *file_name)
+{
+	struct icon_entry *icon, *tmp;
+	int count = 0;
+
+	if (!bssid)
+		wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons");
+	else if (!file_name)
+		wpa_printf(MSG_DEBUG, "HS20: Delete all stored icons for "
+			   MACSTR, MAC2STR(bssid));
+	else
+		wpa_printf(MSG_DEBUG, "HS20: Delete stored icons for "
+			   MACSTR " file name %s", MAC2STR(bssid), file_name);
+
+	dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry,
+			      list) {
+		if ((!bssid || os_memcmp(icon->bssid, bssid, ETH_ALEN) == 0) &&
+		    (!file_name ||
+		     os_strcmp(icon->file_name, file_name) == 0)) {
+			dl_list_del(&icon->list);
+			hs20_free_icon_entry(icon);
+			count++;
+		}
+	}
+	return count == 0 ? -1 : 0;
+}
+
+
+static void hs20_set_osu_access_permission(const char *osu_dir,
+					   const char *fname)
+{
+	struct stat statbuf;
+
+	/* Get OSU directory information */
+	if (stat(osu_dir, &statbuf) < 0) {
+		wpa_printf(MSG_WARNING, "Cannot stat the OSU directory %s",
+			   osu_dir);
+		return;
+	}
+
+	if (chmod(fname, statbuf.st_mode) < 0) {
+		wpa_printf(MSG_WARNING,
+			   "Cannot change the permissions for %s", fname);
+		return;
+	}
+
+	if (chown(fname, statbuf.st_uid, statbuf.st_gid) < 0) {
+		wpa_printf(MSG_WARNING, "Cannot change the ownership for %s",
+			   fname);
+	}
+}
+
+
+static void hs20_remove_duplicate_icons(struct wpa_supplicant *wpa_s,
+					struct icon_entry *new_icon)
+{
+	struct icon_entry *icon, *tmp;
+
+	dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry,
+			      list) {
+		if (icon == new_icon)
+			continue;
+		if (os_memcmp(icon->bssid, new_icon->bssid, ETH_ALEN) == 0 &&
+		    os_strcmp(icon->file_name, new_icon->file_name) == 0) {
+			dl_list_del(&icon->list);
+			hs20_free_icon_entry(icon);
+		}
+	}
+}
+
+
+static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
+					 const u8 *sa, const u8 *pos,
+					 size_t slen, u8 dialog_token)
+{
+	char fname[256];
+	int png;
+	FILE *f;
+	u16 data_len;
+	struct icon_entry *icon;
+
+	dl_list_for_each(icon, &wpa_s->icon_head, struct icon_entry, list) {
+		if (icon->dialog_token == dialog_token && !icon->image &&
+		    os_memcmp(icon->bssid, sa, ETH_ALEN) == 0) {
+			icon->image = os_malloc(slen);
+			if (!icon->image)
+				return -1;
+			os_memcpy(icon->image, pos, slen);
+			icon->image_len = slen;
+			hs20_remove_duplicate_icons(wpa_s, icon);
+			wpa_msg(wpa_s, MSG_INFO,
+				"RX-HS20-ICON " MACSTR " %s %u",
+				MAC2STR(sa), icon->file_name,
+				(unsigned int) icon->image_len);
+			return 0;
+		}
+	}
+
+	wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR " Icon Binary File",
+		MAC2STR(sa));
+
+	if (slen < 4) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
+			"value from " MACSTR, MAC2STR(sa));
+		return -1;
+	}
+
+	wpa_printf(MSG_DEBUG, "HS 2.0: Download Status Code %u", *pos);
+	if (*pos != 0)
+		return -1;
+	pos++;
+	slen--;
+
+	if ((size_t) 1 + pos[0] > slen) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
+			"value from " MACSTR, MAC2STR(sa));
+		return -1;
+	}
+	wpa_hexdump_ascii(MSG_DEBUG, "Icon Type", pos + 1, pos[0]);
+	png = os_strncasecmp((char *) pos + 1, "image/png", 9) == 0;
+	slen -= 1 + pos[0];
+	pos += 1 + pos[0];
+
+	if (slen < 2) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
+			"value from " MACSTR, MAC2STR(sa));
+		return -1;
+	}
+	data_len = WPA_GET_LE16(pos);
+	pos += 2;
+	slen -= 2;
+
+	if (data_len > slen) {
+		wpa_dbg(wpa_s, MSG_DEBUG, "HS 2.0: Too short Icon Binary File "
+			"value from " MACSTR, MAC2STR(sa));
+		return -1;
+	}
+
+	wpa_printf(MSG_DEBUG, "Icon Binary Data: %u bytes", data_len);
+	if (wpa_s->conf->osu_dir == NULL)
+		return -1;
+
+	wpa_s->osu_icon_id++;
+	if (wpa_s->osu_icon_id == 0)
+		wpa_s->osu_icon_id++;
+	snprintf(fname, sizeof(fname), "%s/osu-icon-%u.%s",
+		 wpa_s->conf->osu_dir, wpa_s->osu_icon_id,
+		 png ? "png" : "icon");
+	f = fopen(fname, "wb");
+	if (f == NULL)
+		return -1;
+
+	hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
+
+	if (fwrite(pos, slen, 1, f) != 1) {
+		fclose(f);
+		unlink(fname);
+		return -1;
+	}
+	fclose(f);
+
+	wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP-ICON %s", fname);
+	return 0;
+}
+
+
+static void hs20_continue_icon_fetch(void *eloop_ctx, void *sock_ctx)
+{
+	struct wpa_supplicant *wpa_s = eloop_ctx;
+	if (wpa_s->fetch_osu_icon_in_progress)
+		hs20_next_osu_icon(wpa_s);
+}
+
+
+static void hs20_osu_icon_fetch_result(struct wpa_supplicant *wpa_s, int res)
+{
+	size_t i, j;
+	struct os_reltime now, tmp;
+	int dur;
+
+	os_get_reltime(&now);
+	os_reltime_sub(&now, &wpa_s->osu_icon_fetch_start, &tmp);
+	dur = tmp.sec * 1000 + tmp.usec / 1000;
+	wpa_printf(MSG_DEBUG, "HS 2.0: Icon fetch dur=%d ms res=%d",
+		   dur, res);
+
+	for (i = 0; i < wpa_s->osu_prov_count; i++) {
+		struct osu_provider *osu = &wpa_s->osu_prov[i];
+		for (j = 0; j < osu->icon_count; j++) {
+			struct osu_icon *icon = &osu->icon[j];
+			if (icon->id || icon->failed)
+				continue;
+			if (res < 0)
+				icon->failed = 1;
+			else
+				icon->id = wpa_s->osu_icon_id;
+			return;
+		}
+	}
+}
+
+
 void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
-				  const u8 *sa, const u8 *data, size_t slen)
+				  struct wpa_bss *bss, const u8 *sa,
+				  const u8 *data, size_t slen, u8 dialog_token)
 {
 	const u8 *pos = data;
 	u8 subtype;
-	struct wpa_bss *bss = wpa_bss_get_bssid(wpa_s, sa);
 	struct wpa_bss_anqp *anqp = NULL;
+	int ret;
 
 	if (slen < 2)
 		return;
@@ -160,6 +573,11 @@ void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
 		wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
 			" HS Capability List", MAC2STR(sa));
 		wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen);
+		if (anqp) {
+			wpabuf_free(anqp->hs20_capability_list);
+			anqp->hs20_capability_list =
+				wpabuf_alloc_copy(pos, slen);
+		}
 		break;
 	case HS20_STYPE_OPERATOR_FRIENDLY_NAME:
 		wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
@@ -207,8 +625,587 @@ void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
 				wpabuf_alloc_copy(pos, slen);
 		}
 		break;
+	case HS20_STYPE_OSU_PROVIDERS_LIST:
+		wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
+			" OSU Providers list", MAC2STR(sa));
+		wpa_s->num_prov_found++;
+		if (anqp) {
+			wpabuf_free(anqp->hs20_osu_providers_list);
+			anqp->hs20_osu_providers_list =
+				wpabuf_alloc_copy(pos, slen);
+		}
+		break;
+	case HS20_STYPE_ICON_BINARY_FILE:
+		ret = hs20_process_icon_binary_file(wpa_s, sa, pos, slen,
+						    dialog_token);
+		if (wpa_s->fetch_osu_icon_in_progress) {
+			hs20_osu_icon_fetch_result(wpa_s, ret);
+			eloop_cancel_timeout(hs20_continue_icon_fetch,
+					     wpa_s, NULL);
+			eloop_register_timeout(0, 0, hs20_continue_icon_fetch,
+					       wpa_s, NULL);
+		}
+		break;
 	default:
 		wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype);
 		break;
 	}
 }
+
+
+void hs20_notify_parse_done(struct wpa_supplicant *wpa_s)
+{
+	if (!wpa_s->fetch_osu_icon_in_progress)
+		return;
+	if (eloop_is_timeout_registered(hs20_continue_icon_fetch, wpa_s, NULL))
+		return;
+	/*
+	 * We are going through icon fetch, but no icon response was received.
+	 * Assume this means the current AP could not provide an answer to avoid
+	 * getting stuck in fetch iteration.
+	 */
+	hs20_icon_fetch_failed(wpa_s);
+}
+
+
+static void hs20_free_osu_prov_entry(struct osu_provider *prov)
+{
+}
+
+
+void hs20_free_osu_prov(struct wpa_supplicant *wpa_s)
+{
+	size_t i;
+	for (i = 0; i < wpa_s->osu_prov_count; i++)
+		hs20_free_osu_prov_entry(&wpa_s->osu_prov[i]);
+	os_free(wpa_s->osu_prov);
+	wpa_s->osu_prov = NULL;
+	wpa_s->osu_prov_count = 0;
+}
+
+
+static void hs20_osu_fetch_done(struct wpa_supplicant *wpa_s)
+{
+	char fname[256];
+	FILE *f;
+	size_t i, j;
+
+	wpa_s->fetch_osu_info = 0;
+	wpa_s->fetch_osu_icon_in_progress = 0;
+
+	if (wpa_s->conf->osu_dir == NULL) {
+		hs20_free_osu_prov(wpa_s);
+		wpa_s->fetch_anqp_in_progress = 0;
+		return;
+	}
+
+	snprintf(fname, sizeof(fname), "%s/osu-providers.txt",
+		 wpa_s->conf->osu_dir);
+	f = fopen(fname, "w");
+	if (f == NULL) {
+		hs20_free_osu_prov(wpa_s);
+		wpa_s->fetch_anqp_in_progress = 0;
+		return;
+	}
+
+	hs20_set_osu_access_permission(wpa_s->conf->osu_dir, fname);
+
+	for (i = 0; i < wpa_s->osu_prov_count; i++) {
+		struct osu_provider *osu = &wpa_s->osu_prov[i];
+		if (i > 0)
+			fprintf(f, "\n");
+		fprintf(f, "OSU-PROVIDER " MACSTR "\n"
+			"uri=%s\n"
+			"methods=%08x\n",
+			MAC2STR(osu->bssid), osu->server_uri, osu->osu_methods);
+		if (osu->osu_ssid_len) {
+			fprintf(f, "osu_ssid=%s\n",
+				wpa_ssid_txt(osu->osu_ssid,
+					     osu->osu_ssid_len));
+		}
+		if (osu->osu_nai[0])
+			fprintf(f, "osu_nai=%s\n", osu->osu_nai);
+		for (j = 0; j < osu->friendly_name_count; j++) {
+			fprintf(f, "friendly_name=%s:%s\n",
+				osu->friendly_name[j].lang,
+				osu->friendly_name[j].text);
+		}
+		for (j = 0; j < osu->serv_desc_count; j++) {
+			fprintf(f, "desc=%s:%s\n",
+				osu->serv_desc[j].lang,
+				osu->serv_desc[j].text);
+		}
+		for (j = 0; j < osu->icon_count; j++) {
+			struct osu_icon *icon = &osu->icon[j];
+			if (icon->failed)
+				continue; /* could not fetch icon */
+			fprintf(f, "icon=%u:%u:%u:%s:%s:%s\n",
+				icon->id, icon->width, icon->height, icon->lang,
+				icon->icon_type, icon->filename);
+		}
+	}
+	fclose(f);
+	hs20_free_osu_prov(wpa_s);
+
+	wpa_msg(wpa_s, MSG_INFO, "OSU provider fetch completed");
+	wpa_s->fetch_anqp_in_progress = 0;
+}
+
+
+void hs20_next_osu_icon(struct wpa_supplicant *wpa_s)
+{
+	size_t i, j;
+
+	wpa_printf(MSG_DEBUG, "HS 2.0: Ready to fetch next icon");
+
+	for (i = 0; i < wpa_s->osu_prov_count; i++) {
+		struct osu_provider *osu = &wpa_s->osu_prov[i];
+		for (j = 0; j < osu->icon_count; j++) {
+			struct osu_icon *icon = &osu->icon[j];
+			if (icon->id || icon->failed)
+				continue;
+
+			wpa_printf(MSG_DEBUG, "HS 2.0: Try to fetch icon '%s' "
+				   "from " MACSTR, icon->filename,
+				   MAC2STR(osu->bssid));
+			os_get_reltime(&wpa_s->osu_icon_fetch_start);
+			if (hs20_anqp_send_req(wpa_s, osu->bssid,
+					       BIT(HS20_STYPE_ICON_REQUEST),
+					       (u8 *) icon->filename,
+					       os_strlen(icon->filename),
+					       0) < 0) {
+				icon->failed = 1;
+				continue;
+			}
+			return;
+		}
+	}
+
+	wpa_printf(MSG_DEBUG, "HS 2.0: No more icons to fetch");
+	hs20_osu_fetch_done(wpa_s);
+}
+
+
+static void hs20_osu_add_prov(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
+			      const u8 *osu_ssid, u8 osu_ssid_len,
+			      const u8 *pos, size_t len)
+{
+	struct osu_provider *prov;
+	const u8 *end = pos + len;
+	u16 len2;
+	const u8 *pos2;
+	u8 uri_len, osu_method_len, osu_nai_len;
+
+	wpa_hexdump(MSG_DEBUG, "HS 2.0: Parsing OSU Provider", pos, len);
+	prov = os_realloc_array(wpa_s->osu_prov,
+				wpa_s->osu_prov_count + 1,
+				sizeof(*prov));
+	if (prov == NULL)
+		return;
+	wpa_s->osu_prov = prov;
+	prov = &prov[wpa_s->osu_prov_count];
+	os_memset(prov, 0, sizeof(*prov));
+
+	os_memcpy(prov->bssid, bss->bssid, ETH_ALEN);
+	os_memcpy(prov->osu_ssid, osu_ssid, osu_ssid_len);
+	prov->osu_ssid_len = osu_ssid_len;
+
+	/* OSU Friendly Name Length */
+	if (end - pos < 2) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
+			   "Friendly Name Length");
+		return;
+	}
+	len2 = WPA_GET_LE16(pos);
+	pos += 2;
+	if (len2 > end - pos) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
+			   "Friendly Name Duples");
+		return;
+	}
+	pos2 = pos;
+	pos += len2;
+
+	/* OSU Friendly Name Duples */
+	while (pos - pos2 >= 4 && prov->friendly_name_count < OSU_MAX_ITEMS) {
+		struct osu_lang_string *f;
+		if (1 + pos2[0] > pos - pos2 || pos2[0] < 3) {
+			wpa_printf(MSG_DEBUG, "Invalid OSU Friendly Name");
+			break;
+		}
+		f = &prov->friendly_name[prov->friendly_name_count++];
+		os_memcpy(f->lang, pos2 + 1, 3);
+		os_memcpy(f->text, pos2 + 1 + 3, pos2[0] - 3);
+		pos2 += 1 + pos2[0];
+	}
+
+	/* OSU Server URI */
+	if (end - pos < 1) {
+		wpa_printf(MSG_DEBUG,
+			   "HS 2.0: Not enough room for OSU Server URI length");
+		return;
+	}
+	uri_len = *pos++;
+	if (uri_len > end - pos) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Server "
+			   "URI");
+		return;
+	}
+	os_memcpy(prov->server_uri, pos, uri_len);
+	pos += uri_len;
+
+	/* OSU Method list */
+	if (end - pos < 1) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
+			   "list length");
+		return;
+	}
+	osu_method_len = pos[0];
+	if (osu_method_len > end - pos - 1) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU Method "
+			   "list");
+		return;
+	}
+	pos2 = pos + 1;
+	pos += 1 + osu_method_len;
+	while (pos2 < pos) {
+		if (*pos2 < 32)
+			prov->osu_methods |= BIT(*pos2);
+		pos2++;
+	}
+
+	/* Icons Available Length */
+	if (end - pos < 2) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
+			   "Available Length");
+		return;
+	}
+	len2 = WPA_GET_LE16(pos);
+	pos += 2;
+	if (len2 > end - pos) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for Icons "
+			   "Available");
+		return;
+	}
+	pos2 = pos;
+	pos += len2;
+
+	/* Icons Available */
+	while (pos2 < pos) {
+		struct osu_icon *icon = &prov->icon[prov->icon_count];
+		u8 flen;
+
+		if (2 + 2 + 3 + 1 + 1 > pos - pos2) {
+			wpa_printf(MSG_DEBUG, "HS 2.0: Invalid Icon Metadata");
+			break;
+		}
+
+		icon->width = WPA_GET_LE16(pos2);
+		pos2 += 2;
+		icon->height = WPA_GET_LE16(pos2);
+		pos2 += 2;
+		os_memcpy(icon->lang, pos2, 3);
+		pos2 += 3;
+
+		flen = *pos2++;
+		if (flen > pos - pos2) {
+			wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon Type");
+			break;
+		}
+		os_memcpy(icon->icon_type, pos2, flen);
+		pos2 += flen;
+
+		if (pos - pos2 < 1) {
+			wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
+				   "Filename length");
+			break;
+		}
+		flen = *pos2++;
+		if (flen > pos - pos2) {
+			wpa_printf(MSG_DEBUG, "HS 2.0: Not room for Icon "
+				   "Filename");
+			break;
+		}
+		os_memcpy(icon->filename, pos2, flen);
+		pos2 += flen;
+
+		prov->icon_count++;
+	}
+
+	/* OSU_NAI */
+	if (end - pos < 1) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
+		return;
+	}
+	osu_nai_len = *pos++;
+	if (osu_nai_len > end - pos) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU_NAI");
+		return;
+	}
+	os_memcpy(prov->osu_nai, pos, osu_nai_len);
+	pos += osu_nai_len;
+
+	/* OSU Service Description Length */
+	if (end - pos < 2) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
+			   "Service Description Length");
+		return;
+	}
+	len2 = WPA_GET_LE16(pos);
+	pos += 2;
+	if (len2 > end - pos) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for OSU "
+			   "Service Description Duples");
+		return;
+	}
+	pos2 = pos;
+	pos += len2;
+
+	/* OSU Service Description Duples */
+	while (pos - pos2 >= 4 && prov->serv_desc_count < OSU_MAX_ITEMS) {
+		struct osu_lang_string *f;
+		u8 descr_len;
+
+		descr_len = *pos2++;
+		if (descr_len > pos - pos2 || descr_len < 3) {
+			wpa_printf(MSG_DEBUG, "Invalid OSU Service "
+				   "Description");
+			break;
+		}
+		f = &prov->serv_desc[prov->serv_desc_count++];
+		os_memcpy(f->lang, pos2, 3);
+		os_memcpy(f->text, pos2 + 3, descr_len - 3);
+		pos2 += descr_len;
+	}
+
+	wpa_printf(MSG_DEBUG, "HS 2.0: Added OSU Provider through " MACSTR,
+		   MAC2STR(bss->bssid));
+	wpa_s->osu_prov_count++;
+}
+
+
+void hs20_osu_icon_fetch(struct wpa_supplicant *wpa_s)
+{
+	struct wpa_bss *bss;
+	struct wpabuf *prov_anqp;
+	const u8 *pos, *end;
+	u16 len;
+	const u8 *osu_ssid;
+	u8 osu_ssid_len;
+	u8 num_providers;
+
+	hs20_free_osu_prov(wpa_s);
+
+	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
+		if (bss->anqp == NULL)
+			continue;
+		prov_anqp = bss->anqp->hs20_osu_providers_list;
+		if (prov_anqp == NULL)
+			continue;
+		wpa_printf(MSG_DEBUG, "HS 2.0: Parsing OSU Providers list from "
+			   MACSTR, MAC2STR(bss->bssid));
+		wpa_hexdump_buf(MSG_DEBUG, "HS 2.0: OSU Providers list",
+				prov_anqp);
+		pos = wpabuf_head(prov_anqp);
+		end = pos + wpabuf_len(prov_anqp);
+
+		/* OSU SSID */
+		if (end - pos < 1)
+			continue;
+		if (1 + pos[0] > end - pos) {
+			wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
+				   "OSU SSID");
+			continue;
+		}
+		osu_ssid_len = *pos++;
+		if (osu_ssid_len > SSID_MAX_LEN) {
+			wpa_printf(MSG_DEBUG, "HS 2.0: Invalid OSU SSID "
+				   "Length %u", osu_ssid_len);
+			continue;
+		}
+		osu_ssid = pos;
+		pos += osu_ssid_len;
+
+		if (end - pos < 1) {
+			wpa_printf(MSG_DEBUG, "HS 2.0: Not enough room for "
+				   "Number of OSU Providers");
+			continue;
+		}
+		num_providers = *pos++;
+		wpa_printf(MSG_DEBUG, "HS 2.0: Number of OSU Providers: %u",
+			   num_providers);
+
+		/* OSU Providers */
+		while (end - pos > 2 && num_providers > 0) {
+			num_providers--;
+			len = WPA_GET_LE16(pos);
+			pos += 2;
+			if (len > (unsigned int) (end - pos))
+				break;
+			hs20_osu_add_prov(wpa_s, bss, osu_ssid,
+					  osu_ssid_len, pos, len);
+			pos += len;
+		}
+
+		if (pos != end) {
+			wpa_printf(MSG_DEBUG, "HS 2.0: Ignored %d bytes of "
+				   "extra data after OSU Providers",
+				   (int) (end - pos));
+		}
+	}
+
+	wpa_s->fetch_osu_icon_in_progress = 1;
+	hs20_next_osu_icon(wpa_s);
+}
+
+
+static void hs20_osu_scan_res_handler(struct wpa_supplicant *wpa_s,
+				      struct wpa_scan_results *scan_res)
+{
+	wpa_printf(MSG_DEBUG, "OSU provisioning fetch scan completed");
+	if (!wpa_s->fetch_osu_waiting_scan) {
+		wpa_printf(MSG_DEBUG, "OSU fetch have been canceled");
+		return;
+	}
+	wpa_s->network_select = 0;
+	wpa_s->fetch_all_anqp = 1;
+	wpa_s->fetch_osu_info = 1;
+	wpa_s->fetch_osu_icon_in_progress = 0;
+
+	interworking_start_fetch_anqp(wpa_s);
+}
+
+
+int hs20_fetch_osu(struct wpa_supplicant *wpa_s)
+{
+	if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
+			   "interface disabled");
+		return -1;
+	}
+
+	if (wpa_s->scanning) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
+			   "scanning");
+		return -1;
+	}
+
+	if (wpa_s->conf->osu_dir == NULL) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
+			   "osu_dir not configured");
+		return -1;
+	}
+
+	if (wpa_s->fetch_anqp_in_progress || wpa_s->network_select) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Cannot start fetch_osu - "
+			   "fetch in progress (%d, %d)",
+			   wpa_s->fetch_anqp_in_progress,
+			   wpa_s->network_select);
+		return -1;
+	}
+
+	wpa_msg(wpa_s, MSG_INFO, "Starting OSU provisioning information fetch");
+	wpa_s->num_osu_scans = 0;
+	wpa_s->num_prov_found = 0;
+	hs20_start_osu_scan(wpa_s);
+
+	return 0;
+}
+
+
+void hs20_start_osu_scan(struct wpa_supplicant *wpa_s)
+{
+	wpa_s->fetch_osu_waiting_scan = 1;
+	wpa_s->num_osu_scans++;
+	wpa_s->scan_req = MANUAL_SCAN_REQ;
+	wpa_s->scan_res_handler = hs20_osu_scan_res_handler;
+	wpa_supplicant_req_scan(wpa_s, 0, 0);
+}
+
+
+void hs20_cancel_fetch_osu(struct wpa_supplicant *wpa_s)
+{
+	wpa_printf(MSG_DEBUG, "Cancel OSU fetch");
+	interworking_stop_fetch_anqp(wpa_s);
+	wpa_s->fetch_osu_waiting_scan = 0;
+	wpa_s->network_select = 0;
+	wpa_s->fetch_osu_info = 0;
+	wpa_s->fetch_osu_icon_in_progress = 0;
+}
+
+
+void hs20_icon_fetch_failed(struct wpa_supplicant *wpa_s)
+{
+	hs20_osu_icon_fetch_result(wpa_s, -1);
+	eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
+	eloop_register_timeout(0, 0, hs20_continue_icon_fetch, wpa_s, NULL);
+}
+
+
+void hs20_rx_subscription_remediation(struct wpa_supplicant *wpa_s,
+				      const char *url, u8 osu_method)
+{
+	if (url)
+		wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION "%u %s",
+			osu_method, url);
+	else
+		wpa_msg(wpa_s, MSG_INFO, HS20_SUBSCRIPTION_REMEDIATION);
+}
+
+
+void hs20_rx_deauth_imminent_notice(struct wpa_supplicant *wpa_s, u8 code,
+				    u16 reauth_delay, const char *url)
+{
+	if (!wpa_sm_pmf_enabled(wpa_s->wpa)) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Ignore deauthentication imminent notice since PMF was not enabled");
+		return;
+	}
+
+	wpa_msg(wpa_s, MSG_INFO, HS20_DEAUTH_IMMINENT_NOTICE "%u %u %s",
+		code, reauth_delay, url);
+
+	if (code == HS20_DEAUTH_REASON_CODE_BSS) {
+		wpa_printf(MSG_DEBUG, "HS 2.0: Add BSS to blacklist");
+		wpa_blacklist_add(wpa_s, wpa_s->bssid);
+		/* TODO: For now, disable full ESS since some drivers may not
+		 * support disabling per BSS. */
+		if (wpa_s->current_ssid) {
+			struct os_reltime now;
+			os_get_reltime(&now);
+			if (now.sec + reauth_delay <=
+			    wpa_s->current_ssid->disabled_until.sec)
+				return;
+			wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds (BSS)",
+				   reauth_delay);
+			wpa_s->current_ssid->disabled_until.sec =
+				now.sec + reauth_delay;
+		}
+	}
+
+	if (code == HS20_DEAUTH_REASON_CODE_ESS && wpa_s->current_ssid) {
+		struct os_reltime now;
+		os_get_reltime(&now);
+		if (now.sec + reauth_delay <=
+		    wpa_s->current_ssid->disabled_until.sec)
+			return;
+		wpa_printf(MSG_DEBUG, "HS 2.0: Disable network for %u seconds",
+			   reauth_delay);
+		wpa_s->current_ssid->disabled_until.sec =
+			now.sec + reauth_delay;
+	}
+}
+
+
+void hs20_init(struct wpa_supplicant *wpa_s)
+{
+	dl_list_init(&wpa_s->icon_head);
+}
+
+
+void hs20_deinit(struct wpa_supplicant *wpa_s)
+{
+	eloop_cancel_timeout(hs20_continue_icon_fetch, wpa_s, NULL);
+	hs20_free_osu_prov(wpa_s);
+	if (wpa_s->icon_head.next)
+		hs20_del_icon(wpa_s, NULL, NULL);
+}