7ef6947993
If requested, disable the network based on the HS 2.0 deauthentication request. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
940 lines
26 KiB
C
940 lines
26 KiB
C
/*
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* wpa_supplicant - WNM
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* Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "utils/includes.h"
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#include "utils/common.h"
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#include "common/ieee802_11_defs.h"
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#include "common/wpa_ctrl.h"
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#include "rsn_supp/wpa.h"
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#include "wpa_supplicant_i.h"
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#include "driver_i.h"
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#include "scan.h"
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#include "ctrl_iface.h"
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#include "bss.h"
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#include "wnm_sta.h"
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#include "hs20_supplicant.h"
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#define MAX_TFS_IE_LEN 1024
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#define WNM_MAX_NEIGHBOR_REPORT 10
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/* get the TFS IE from driver */
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static int ieee80211_11_get_tfs_ie(struct wpa_supplicant *wpa_s, u8 *buf,
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u16 *buf_len, enum wnm_oper oper)
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{
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wpa_printf(MSG_DEBUG, "%s: TFS get operation %d", __func__, oper);
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return wpa_drv_wnm_oper(wpa_s, oper, wpa_s->bssid, buf, buf_len);
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}
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/* set the TFS IE to driver */
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static int ieee80211_11_set_tfs_ie(struct wpa_supplicant *wpa_s,
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const u8 *addr, u8 *buf, u16 *buf_len,
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enum wnm_oper oper)
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{
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wpa_printf(MSG_DEBUG, "%s: TFS set operation %d", __func__, oper);
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return wpa_drv_wnm_oper(wpa_s, oper, addr, buf, buf_len);
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}
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/* MLME-SLEEPMODE.request */
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int ieee802_11_send_wnmsleep_req(struct wpa_supplicant *wpa_s,
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u8 action, u16 intval, struct wpabuf *tfs_req)
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{
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struct ieee80211_mgmt *mgmt;
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int res;
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size_t len;
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struct wnm_sleep_element *wnmsleep_ie;
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u8 *wnmtfs_ie;
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u8 wnmsleep_ie_len;
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u16 wnmtfs_ie_len; /* possibly multiple IE(s) */
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enum wnm_oper tfs_oper = action == 0 ? WNM_SLEEP_TFS_REQ_IE_ADD :
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WNM_SLEEP_TFS_REQ_IE_NONE;
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wpa_printf(MSG_DEBUG, "WNM: Request to send WNM-Sleep Mode Request "
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"action=%s to " MACSTR,
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action == 0 ? "enter" : "exit",
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MAC2STR(wpa_s->bssid));
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/* WNM-Sleep Mode IE */
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wnmsleep_ie_len = sizeof(struct wnm_sleep_element);
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wnmsleep_ie = os_zalloc(sizeof(struct wnm_sleep_element));
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if (wnmsleep_ie == NULL)
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return -1;
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wnmsleep_ie->eid = WLAN_EID_WNMSLEEP;
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wnmsleep_ie->len = wnmsleep_ie_len - 2;
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wnmsleep_ie->action_type = action;
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wnmsleep_ie->status = WNM_STATUS_SLEEP_ACCEPT;
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wnmsleep_ie->intval = host_to_le16(intval);
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wpa_hexdump(MSG_DEBUG, "WNM: WNM-Sleep Mode element",
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(u8 *) wnmsleep_ie, wnmsleep_ie_len);
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/* TFS IE(s) */
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if (tfs_req) {
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wnmtfs_ie_len = wpabuf_len(tfs_req);
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wnmtfs_ie = os_malloc(wnmtfs_ie_len);
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if (wnmtfs_ie == NULL) {
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os_free(wnmsleep_ie);
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return -1;
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}
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os_memcpy(wnmtfs_ie, wpabuf_head(tfs_req), wnmtfs_ie_len);
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} else {
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wnmtfs_ie = os_zalloc(MAX_TFS_IE_LEN);
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if (wnmtfs_ie == NULL) {
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os_free(wnmsleep_ie);
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return -1;
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}
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if (ieee80211_11_get_tfs_ie(wpa_s, wnmtfs_ie, &wnmtfs_ie_len,
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tfs_oper)) {
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wnmtfs_ie_len = 0;
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os_free(wnmtfs_ie);
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wnmtfs_ie = NULL;
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}
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}
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wpa_hexdump(MSG_DEBUG, "WNM: TFS Request element",
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(u8 *) wnmtfs_ie, wnmtfs_ie_len);
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mgmt = os_zalloc(sizeof(*mgmt) + wnmsleep_ie_len + wnmtfs_ie_len);
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if (mgmt == NULL) {
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wpa_printf(MSG_DEBUG, "MLME: Failed to allocate buffer for "
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"WNM-Sleep Request action frame");
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os_free(wnmsleep_ie);
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os_free(wnmtfs_ie);
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return -1;
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}
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os_memcpy(mgmt->da, wpa_s->bssid, ETH_ALEN);
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os_memcpy(mgmt->sa, wpa_s->own_addr, ETH_ALEN);
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os_memcpy(mgmt->bssid, wpa_s->bssid, ETH_ALEN);
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mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
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WLAN_FC_STYPE_ACTION);
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mgmt->u.action.category = WLAN_ACTION_WNM;
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mgmt->u.action.u.wnm_sleep_req.action = WNM_SLEEP_MODE_REQ;
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mgmt->u.action.u.wnm_sleep_req.dialogtoken = 1;
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os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable, wnmsleep_ie,
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wnmsleep_ie_len);
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/* copy TFS IE here */
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if (wnmtfs_ie_len > 0) {
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os_memcpy(mgmt->u.action.u.wnm_sleep_req.variable +
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wnmsleep_ie_len, wnmtfs_ie, wnmtfs_ie_len);
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}
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len = 1 + sizeof(mgmt->u.action.u.wnm_sleep_req) + wnmsleep_ie_len +
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wnmtfs_ie_len;
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res = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
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wpa_s->own_addr, wpa_s->bssid,
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&mgmt->u.action.category, len, 0);
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if (res < 0)
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wpa_printf(MSG_DEBUG, "Failed to send WNM-Sleep Request "
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"(action=%d, intval=%d)", action, intval);
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os_free(wnmsleep_ie);
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os_free(wnmtfs_ie);
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os_free(mgmt);
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return res;
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}
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static void wnm_sleep_mode_enter_success(struct wpa_supplicant *wpa_s,
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u8 *tfsresp_ie_start,
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u8 *tfsresp_ie_end)
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{
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wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_CONFIRM,
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wpa_s->bssid, NULL, NULL);
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/* remove GTK/IGTK ?? */
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/* set the TFS Resp IE(s) */
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if (tfsresp_ie_start && tfsresp_ie_end &&
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tfsresp_ie_end - tfsresp_ie_start >= 0) {
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u16 tfsresp_ie_len;
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tfsresp_ie_len = (tfsresp_ie_end + tfsresp_ie_end[1] + 2) -
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tfsresp_ie_start;
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wpa_printf(MSG_DEBUG, "TFS Resp IE(s) found");
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/* pass the TFS Resp IE(s) to driver for processing */
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if (ieee80211_11_set_tfs_ie(wpa_s, wpa_s->bssid,
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tfsresp_ie_start,
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&tfsresp_ie_len,
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WNM_SLEEP_TFS_RESP_IE_SET))
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wpa_printf(MSG_DEBUG, "WNM: Fail to set TFS Resp IE");
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}
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}
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static void wnm_sleep_mode_exit_success(struct wpa_supplicant *wpa_s,
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const u8 *frm, u16 key_len_total)
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{
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u8 *ptr, *end;
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u8 gtk_len;
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wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_CONFIRM, wpa_s->bssid,
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NULL, NULL);
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/* Install GTK/IGTK */
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/* point to key data field */
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ptr = (u8 *) frm + 1 + 2;
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end = ptr + key_len_total;
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wpa_hexdump_key(MSG_DEBUG, "WNM: Key Data", ptr, key_len_total);
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while (ptr + 1 < end) {
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if (ptr + 2 + ptr[1] > end) {
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wpa_printf(MSG_DEBUG, "WNM: Invalid Key Data element "
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"length");
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if (end > ptr) {
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wpa_hexdump(MSG_DEBUG, "WNM: Remaining data",
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ptr, end - ptr);
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}
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break;
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}
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if (*ptr == WNM_SLEEP_SUBELEM_GTK) {
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if (ptr[1] < 11 + 5) {
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wpa_printf(MSG_DEBUG, "WNM: Too short GTK "
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"subelem");
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break;
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}
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gtk_len = *(ptr + 4);
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if (ptr[1] < 11 + gtk_len ||
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gtk_len < 5 || gtk_len > 32) {
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wpa_printf(MSG_DEBUG, "WNM: Invalid GTK "
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"subelem");
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break;
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}
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wpa_wnmsleep_install_key(
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wpa_s->wpa,
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WNM_SLEEP_SUBELEM_GTK,
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ptr);
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ptr += 13 + gtk_len;
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#ifdef CONFIG_IEEE80211W
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} else if (*ptr == WNM_SLEEP_SUBELEM_IGTK) {
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if (ptr[1] < 2 + 6 + WPA_IGTK_LEN) {
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wpa_printf(MSG_DEBUG, "WNM: Too short IGTK "
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"subelem");
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break;
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}
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wpa_wnmsleep_install_key(wpa_s->wpa,
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WNM_SLEEP_SUBELEM_IGTK, ptr);
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ptr += 10 + WPA_IGTK_LEN;
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#endif /* CONFIG_IEEE80211W */
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} else
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break; /* skip the loop */
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}
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}
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static void ieee802_11_rx_wnmsleep_resp(struct wpa_supplicant *wpa_s,
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const u8 *frm, int len)
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{
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/*
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* Action [1] | Diaglog Token [1] | Key Data Len [2] | Key Data |
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* WNM-Sleep Mode IE | TFS Response IE
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*/
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u8 *pos = (u8 *) frm; /* point to payload after the action field */
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u16 key_len_total = le_to_host16(*((u16 *)(frm+2)));
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struct wnm_sleep_element *wnmsleep_ie = NULL;
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/* multiple TFS Resp IE (assuming consecutive) */
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u8 *tfsresp_ie_start = NULL;
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u8 *tfsresp_ie_end = NULL;
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wpa_printf(MSG_DEBUG, "WNM-Sleep Mode Response token=%u key_len_total=%d",
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frm[0], key_len_total);
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pos += 3 + key_len_total;
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if (pos > frm + len) {
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wpa_printf(MSG_INFO, "WNM: Too short frame for Key Data field");
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return;
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}
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while (pos - frm < len) {
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u8 ie_len = *(pos + 1);
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if (pos + 2 + ie_len > frm + len) {
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wpa_printf(MSG_INFO, "WNM: Invalid IE len %u", ie_len);
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break;
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}
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wpa_hexdump(MSG_DEBUG, "WNM: Element", pos, 2 + ie_len);
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if (*pos == WLAN_EID_WNMSLEEP)
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wnmsleep_ie = (struct wnm_sleep_element *) pos;
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else if (*pos == WLAN_EID_TFS_RESP) {
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if (!tfsresp_ie_start)
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tfsresp_ie_start = pos;
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tfsresp_ie_end = pos;
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} else
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wpa_printf(MSG_DEBUG, "EID %d not recognized", *pos);
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pos += ie_len + 2;
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}
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if (!wnmsleep_ie) {
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wpa_printf(MSG_DEBUG, "No WNM-Sleep IE found");
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return;
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}
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if (wnmsleep_ie->status == WNM_STATUS_SLEEP_ACCEPT ||
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wnmsleep_ie->status == WNM_STATUS_SLEEP_EXIT_ACCEPT_GTK_UPDATE) {
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wpa_printf(MSG_DEBUG, "Successfully recv WNM-Sleep Response "
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"frame (action=%d, intval=%d)",
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wnmsleep_ie->action_type, wnmsleep_ie->intval);
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if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER) {
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wnm_sleep_mode_enter_success(wpa_s, tfsresp_ie_start,
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tfsresp_ie_end);
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} else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT) {
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wnm_sleep_mode_exit_success(wpa_s, frm, key_len_total);
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}
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} else {
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wpa_printf(MSG_DEBUG, "Reject recv WNM-Sleep Response frame "
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"(action=%d, intval=%d)",
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wnmsleep_ie->action_type, wnmsleep_ie->intval);
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if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_ENTER)
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wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_ENTER_FAIL,
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wpa_s->bssid, NULL, NULL);
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else if (wnmsleep_ie->action_type == WNM_SLEEP_MODE_EXIT)
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wpa_drv_wnm_oper(wpa_s, WNM_SLEEP_EXIT_FAIL,
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wpa_s->bssid, NULL, NULL);
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}
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}
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void wnm_deallocate_memory(struct wpa_supplicant *wpa_s)
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{
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int i;
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for (i = 0; i < wpa_s->wnm_num_neighbor_report; i++) {
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os_free(wpa_s->wnm_neighbor_report_elements[i].tsf_info);
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os_free(wpa_s->wnm_neighbor_report_elements[i].con_coun_str);
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os_free(wpa_s->wnm_neighbor_report_elements[i].bss_tran_can);
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os_free(wpa_s->wnm_neighbor_report_elements[i].bss_term_dur);
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os_free(wpa_s->wnm_neighbor_report_elements[i].bearing);
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os_free(wpa_s->wnm_neighbor_report_elements[i].meas_pilot);
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os_free(wpa_s->wnm_neighbor_report_elements[i].rrm_cap);
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os_free(wpa_s->wnm_neighbor_report_elements[i].mul_bssid);
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}
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os_free(wpa_s->wnm_neighbor_report_elements);
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wpa_s->wnm_neighbor_report_elements = NULL;
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}
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static void wnm_parse_neighbor_report_elem(struct neighbor_report *rep,
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u8 id, u8 elen, const u8 *pos)
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{
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switch (id) {
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case WNM_NEIGHBOR_TSF:
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if (elen < 2 + 2) {
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wpa_printf(MSG_DEBUG, "WNM: Too short TSF");
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break;
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}
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rep->tsf_info = os_zalloc(sizeof(struct tsf_info));
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if (rep->tsf_info == NULL)
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break;
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rep->tsf_info->present = 1;
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os_memcpy(rep->tsf_info->tsf_offset, pos, 2);
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os_memcpy(rep->tsf_info->beacon_interval, pos + 2, 2);
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break;
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case WNM_NEIGHBOR_CONDENSED_COUNTRY_STRING:
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if (elen < 2) {
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wpa_printf(MSG_DEBUG, "WNM: Too short condensed "
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"country string");
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break;
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}
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rep->con_coun_str =
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os_zalloc(sizeof(struct condensed_country_string));
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if (rep->con_coun_str == NULL)
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break;
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rep->con_coun_str->present = 1;
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os_memcpy(rep->con_coun_str->country_string, pos, 2);
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break;
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case WNM_NEIGHBOR_BSS_TRANSITION_CANDIDATE:
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if (elen < 1) {
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wpa_printf(MSG_DEBUG, "WNM: Too short BSS transition "
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"candidate");
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break;
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}
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rep->bss_tran_can =
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os_zalloc(sizeof(struct bss_transition_candidate));
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if (rep->bss_tran_can == NULL)
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break;
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rep->bss_tran_can->present = 1;
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rep->bss_tran_can->preference = pos[0];
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break;
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case WNM_NEIGHBOR_BSS_TERMINATION_DURATION:
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if (elen < 12) {
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wpa_printf(MSG_DEBUG, "WNM: Too short BSS termination "
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"duration");
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break;
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}
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rep->bss_term_dur =
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os_zalloc(sizeof(struct bss_termination_duration));
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if (rep->bss_term_dur == NULL)
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break;
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rep->bss_term_dur->present = 1;
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os_memcpy(rep->bss_term_dur->duration, pos, 12);
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break;
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case WNM_NEIGHBOR_BEARING:
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if (elen < 8) {
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wpa_printf(MSG_DEBUG, "WNM: Too short neighbor "
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"bearing");
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break;
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}
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rep->bearing = os_zalloc(sizeof(struct bearing));
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if (rep->bearing == NULL)
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break;
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rep->bearing->present = 1;
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os_memcpy(rep->bearing->bearing, pos, 8);
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break;
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case WNM_NEIGHBOR_MEASUREMENT_PILOT:
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if (elen < 2) {
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wpa_printf(MSG_DEBUG, "WNM: Too short measurement "
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"pilot");
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break;
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}
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rep->meas_pilot = os_zalloc(sizeof(struct measurement_pilot));
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if (rep->meas_pilot == NULL)
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break;
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rep->meas_pilot->present = 1;
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rep->meas_pilot->measurement_pilot = pos[0];
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rep->meas_pilot->num_vendor_specific = pos[1];
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os_memcpy(rep->meas_pilot->vendor_specific, pos + 2, elen - 2);
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break;
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case WNM_NEIGHBOR_RRM_ENABLED_CAPABILITIES:
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if (elen < 4) {
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wpa_printf(MSG_DEBUG, "WNM: Too short RRM enabled "
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"capabilities");
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break;
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}
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rep->rrm_cap =
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os_zalloc(sizeof(struct rrm_enabled_capabilities));
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if (rep->rrm_cap == NULL)
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break;
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rep->rrm_cap->present = 1;
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os_memcpy(rep->rrm_cap->capabilities, pos, 4);
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break;
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case WNM_NEIGHBOR_MULTIPLE_BSSID:
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if (elen < 2) {
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wpa_printf(MSG_DEBUG, "WNM: Too short multiple BSSID");
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break;
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}
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rep->mul_bssid = os_zalloc(sizeof(struct multiple_bssid));
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if (rep->mul_bssid == NULL)
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break;
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rep->mul_bssid->present = 1;
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rep->mul_bssid->max_bssid_indicator = pos[0];
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rep->mul_bssid->num_vendor_specific = pos[1];
|
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os_memcpy(rep->mul_bssid->vendor_specific, pos + 2, elen - 2);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void wnm_parse_neighbor_report(struct wpa_supplicant *wpa_s,
|
|
const u8 *pos, u8 len,
|
|
struct neighbor_report *rep)
|
|
{
|
|
u8 left = len;
|
|
|
|
if (left < 13) {
|
|
wpa_printf(MSG_DEBUG, "WNM: Too short neighbor report");
|
|
return;
|
|
}
|
|
|
|
os_memcpy(rep->bssid, pos, ETH_ALEN);
|
|
os_memcpy(rep->bssid_information, pos + ETH_ALEN, 4);
|
|
rep->regulatory_class = *(pos + 10);
|
|
rep->channel_number = *(pos + 11);
|
|
rep->phy_type = *(pos + 12);
|
|
|
|
pos += 13;
|
|
left -= 13;
|
|
|
|
while (left >= 2) {
|
|
u8 id, elen;
|
|
|
|
id = *pos++;
|
|
elen = *pos++;
|
|
wnm_parse_neighbor_report_elem(rep, id, elen, pos);
|
|
left -= 2 + elen;
|
|
pos += elen;
|
|
}
|
|
}
|
|
|
|
|
|
static int compare_scan_neighbor_results(struct wpa_supplicant *wpa_s,
|
|
struct wpa_scan_results *scan_res,
|
|
struct neighbor_report *neigh_rep,
|
|
u8 num_neigh_rep, u8 *bssid_to_connect)
|
|
{
|
|
|
|
u8 i, j;
|
|
|
|
if (scan_res == NULL || num_neigh_rep == 0)
|
|
return 0;
|
|
|
|
wpa_printf(MSG_DEBUG, "WNM: Current BSS " MACSTR " RSSI %d",
|
|
MAC2STR(wpa_s->bssid),
|
|
wpa_s->current_bss ? wpa_s->current_bss->level : 0);
|
|
|
|
for (i = 0; i < num_neigh_rep; i++) {
|
|
for (j = 0; j < scan_res->num; j++) {
|
|
/* Check for a better RSSI AP */
|
|
if (os_memcmp(scan_res->res[j]->bssid,
|
|
neigh_rep[i].bssid, ETH_ALEN) == 0 &&
|
|
scan_res->res[j]->level >
|
|
wpa_s->current_bss->level) {
|
|
/* Got a BSSID with better RSSI value */
|
|
os_memcpy(bssid_to_connect, neigh_rep[i].bssid,
|
|
ETH_ALEN);
|
|
wpa_printf(MSG_DEBUG, "Found a BSS " MACSTR
|
|
" with better scan RSSI %d",
|
|
MAC2STR(scan_res->res[j]->bssid),
|
|
scan_res->res[j]->level);
|
|
return 1;
|
|
}
|
|
wpa_printf(MSG_DEBUG, "scan_res[%d] " MACSTR
|
|
" RSSI %d", j,
|
|
MAC2STR(scan_res->res[j]->bssid),
|
|
scan_res->res[j]->level);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void wnm_send_bss_transition_mgmt_resp(
|
|
struct wpa_supplicant *wpa_s, u8 dialog_token,
|
|
enum bss_trans_mgmt_status_code status, u8 delay,
|
|
const u8 *target_bssid)
|
|
{
|
|
u8 buf[1000], *pos;
|
|
struct ieee80211_mgmt *mgmt;
|
|
size_t len;
|
|
|
|
wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Response "
|
|
"to " MACSTR " dialog_token=%u status=%u delay=%d",
|
|
MAC2STR(wpa_s->bssid), dialog_token, status, delay);
|
|
|
|
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;
|
|
}
|
|
|
|
len = pos - (u8 *) &mgmt->u.action.category;
|
|
|
|
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);
|
|
}
|
|
|
|
|
|
void wnm_scan_response(struct wpa_supplicant *wpa_s,
|
|
struct wpa_scan_results *scan_res)
|
|
{
|
|
u8 bssid[ETH_ALEN];
|
|
|
|
if (scan_res == NULL) {
|
|
wpa_printf(MSG_ERROR, "Scan result is NULL");
|
|
goto send_bss_resp_fail;
|
|
}
|
|
|
|
/* Compare the Neighbor Report and scan results */
|
|
if (compare_scan_neighbor_results(wpa_s, scan_res,
|
|
wpa_s->wnm_neighbor_report_elements,
|
|
wpa_s->wnm_num_neighbor_report,
|
|
bssid) == 1) {
|
|
/* Associate to the network */
|
|
struct wpa_bss *bss;
|
|
struct wpa_ssid *ssid = wpa_s->current_ssid;
|
|
|
|
bss = wpa_bss_get_bssid(wpa_s, bssid);
|
|
if (!bss) {
|
|
wpa_printf(MSG_DEBUG, "WNM: Target AP not found from "
|
|
"BSS table");
|
|
goto send_bss_resp_fail;
|
|
}
|
|
|
|
/* Send the BSS Management Response - Accept */
|
|
if (wpa_s->wnm_reply) {
|
|
wnm_send_bss_transition_mgmt_resp(wpa_s,
|
|
wpa_s->wnm_dialog_token,
|
|
WNM_BSS_TM_ACCEPT,
|
|
0, bssid);
|
|
}
|
|
|
|
wpa_s->reassociate = 1;
|
|
wpa_supplicant_connect(wpa_s, bss, ssid);
|
|
wnm_deallocate_memory(wpa_s);
|
|
return;
|
|
}
|
|
|
|
/* Send reject response for all the failures */
|
|
send_bss_resp_fail:
|
|
wnm_deallocate_memory(wpa_s);
|
|
if (wpa_s->wnm_reply) {
|
|
wnm_send_bss_transition_mgmt_resp(wpa_s,
|
|
wpa_s->wnm_dialog_token,
|
|
WNM_BSS_TM_REJECT_UNSPECIFIED,
|
|
0, NULL);
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
static void ieee802_11_rx_bss_trans_mgmt_req(struct wpa_supplicant *wpa_s,
|
|
const u8 *pos, const u8 *end,
|
|
int reply)
|
|
{
|
|
if (pos + 5 > end)
|
|
return;
|
|
|
|
wpa_s->wnm_dialog_token = pos[0];
|
|
wpa_s->wnm_mode = pos[1];
|
|
wpa_s->wnm_dissoc_timer = WPA_GET_LE16(pos + 2);
|
|
wpa_s->wnm_validity_interval = pos[4];
|
|
wpa_s->wnm_reply = reply;
|
|
|
|
wpa_printf(MSG_DEBUG, "WNM: BSS Transition Management Request: "
|
|
"dialog_token=%u request_mode=0x%x "
|
|
"disassoc_timer=%u validity_interval=%u",
|
|
wpa_s->wnm_dialog_token, wpa_s->wnm_mode,
|
|
wpa_s->wnm_dissoc_timer, wpa_s->wnm_validity_interval);
|
|
|
|
pos += 5;
|
|
|
|
if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_BSS_TERMINATION_INCLUDED) {
|
|
if (pos + 12 > end) {
|
|
wpa_printf(MSG_DEBUG, "WNM: Too short BSS TM Request");
|
|
return;
|
|
}
|
|
os_memcpy(wpa_s->wnm_bss_termination_duration, pos, 12);
|
|
pos += 12; /* BSS Termination Duration */
|
|
}
|
|
|
|
if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_ESS_DISASSOC_IMMINENT) {
|
|
char url[256];
|
|
unsigned int beacon_int;
|
|
|
|
if (pos + 1 > end || pos + 1 + pos[0] > end) {
|
|
wpa_printf(MSG_DEBUG, "WNM: Invalid BSS Transition "
|
|
"Management Request (URL)");
|
|
return;
|
|
}
|
|
os_memcpy(url, pos + 1, pos[0]);
|
|
url[pos[0]] = '\0';
|
|
pos += 1 + pos[0];
|
|
|
|
if (wpa_s->current_bss)
|
|
beacon_int = wpa_s->current_bss->beacon_int;
|
|
else
|
|
beacon_int = 100; /* best guess */
|
|
|
|
wpa_msg(wpa_s, MSG_INFO, ESS_DISASSOC_IMMINENT "%d %u %s",
|
|
wpa_sm_pmf_enabled(wpa_s->wpa),
|
|
wpa_s->wnm_dissoc_timer * beacon_int * 128 / 125, url);
|
|
}
|
|
|
|
if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_DISASSOC_IMMINENT) {
|
|
wpa_msg(wpa_s, MSG_INFO, "WNM: Disassociation Imminent - "
|
|
"Disassociation Timer %u", wpa_s->wnm_dissoc_timer);
|
|
if (wpa_s->wnm_dissoc_timer && !wpa_s->scanning) {
|
|
/* TODO: mark current BSS less preferred for
|
|
* selection */
|
|
wpa_printf(MSG_DEBUG, "Trying to find another BSS");
|
|
wpa_supplicant_req_scan(wpa_s, 0, 0);
|
|
}
|
|
}
|
|
|
|
if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_PREF_CAND_LIST_INCLUDED) {
|
|
wpa_msg(wpa_s, MSG_INFO, "WNM: Preferred List Available");
|
|
wpa_s->wnm_num_neighbor_report = 0;
|
|
os_free(wpa_s->wnm_neighbor_report_elements);
|
|
wpa_s->wnm_neighbor_report_elements = os_zalloc(
|
|
WNM_MAX_NEIGHBOR_REPORT *
|
|
sizeof(struct neighbor_report));
|
|
if (wpa_s->wnm_neighbor_report_elements == NULL)
|
|
return;
|
|
|
|
while (pos + 2 <= end &&
|
|
wpa_s->wnm_num_neighbor_report < WNM_MAX_NEIGHBOR_REPORT)
|
|
{
|
|
u8 tag = *pos++;
|
|
u8 len = *pos++;
|
|
|
|
wpa_printf(MSG_DEBUG, "WNM: Neighbor report tag %u",
|
|
tag);
|
|
if (pos + len > end) {
|
|
wpa_printf(MSG_DEBUG, "WNM: Truncated request");
|
|
return;
|
|
}
|
|
wnm_parse_neighbor_report(
|
|
wpa_s, pos, len,
|
|
&wpa_s->wnm_neighbor_report_elements[
|
|
wpa_s->wnm_num_neighbor_report]);
|
|
|
|
pos += len;
|
|
wpa_s->wnm_num_neighbor_report++;
|
|
}
|
|
|
|
wpa_s->scan_res_handler = wnm_scan_response;
|
|
wpa_supplicant_req_scan(wpa_s, 0, 0);
|
|
} else if (reply) {
|
|
enum bss_trans_mgmt_status_code status;
|
|
if (wpa_s->wnm_mode & WNM_BSS_TM_REQ_ESS_DISASSOC_IMMINENT)
|
|
status = WNM_BSS_TM_ACCEPT;
|
|
else {
|
|
wpa_msg(wpa_s, MSG_INFO, "WNM: BSS Transition Management Request did not include candidates");
|
|
status = WNM_BSS_TM_REJECT_UNSPECIFIED;
|
|
}
|
|
wnm_send_bss_transition_mgmt_resp(wpa_s,
|
|
wpa_s->wnm_dialog_token,
|
|
status, 0, NULL);
|
|
}
|
|
}
|
|
|
|
|
|
int wnm_send_bss_transition_mgmt_query(struct wpa_supplicant *wpa_s,
|
|
u8 query_reason)
|
|
{
|
|
u8 buf[1000], *pos;
|
|
struct ieee80211_mgmt *mgmt;
|
|
size_t len;
|
|
int ret;
|
|
|
|
wpa_printf(MSG_DEBUG, "WNM: Send BSS Transition Management Query to "
|
|
MACSTR " query_reason=%u",
|
|
MAC2STR(wpa_s->bssid), query_reason);
|
|
|
|
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_query.action = WNM_BSS_TRANS_MGMT_QUERY;
|
|
mgmt->u.action.u.bss_tm_query.dialog_token = 1;
|
|
mgmt->u.action.u.bss_tm_query.query_reason = query_reason;
|
|
pos = mgmt->u.action.u.bss_tm_query.variable;
|
|
|
|
len = pos - (u8 *) &mgmt->u.action.category;
|
|
|
|
ret = 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);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static void ieee802_11_rx_wnm_notif_req_wfa(struct wpa_supplicant *wpa_s,
|
|
const u8 *sa, const u8 *data,
|
|
int len)
|
|
{
|
|
const u8 *pos, *end, *next;
|
|
u8 ie, ie_len;
|
|
|
|
pos = data;
|
|
end = data + len;
|
|
|
|
while (pos + 1 < end) {
|
|
ie = *pos++;
|
|
ie_len = *pos++;
|
|
wpa_printf(MSG_DEBUG, "WNM: WFA subelement %u len %u",
|
|
ie, ie_len);
|
|
if (ie_len > end - pos) {
|
|
wpa_printf(MSG_DEBUG, "WNM: Not enough room for "
|
|
"subelement");
|
|
break;
|
|
}
|
|
next = pos + ie_len;
|
|
if (ie_len < 4) {
|
|
pos = next;
|
|
continue;
|
|
}
|
|
wpa_printf(MSG_DEBUG, "WNM: Subelement OUI %06x type %u",
|
|
WPA_GET_BE24(pos), pos[3]);
|
|
|
|
#ifdef CONFIG_HS20
|
|
if (ie == WLAN_EID_VENDOR_SPECIFIC && ie_len >= 5 &&
|
|
WPA_GET_BE24(pos) == OUI_WFA &&
|
|
pos[3] == HS20_WNM_SUB_REM_NEEDED) {
|
|
/* Subscription Remediation subelement */
|
|
const u8 *ie_end;
|
|
u8 url_len;
|
|
char *url;
|
|
u8 osu_method;
|
|
|
|
wpa_printf(MSG_DEBUG, "WNM: Subscription Remediation "
|
|
"subelement");
|
|
ie_end = pos + ie_len;
|
|
pos += 4;
|
|
url_len = *pos++;
|
|
if (url_len == 0) {
|
|
wpa_printf(MSG_DEBUG, "WNM: No Server URL included");
|
|
url = NULL;
|
|
osu_method = 1;
|
|
} else {
|
|
if (pos + url_len + 1 > ie_end) {
|
|
wpa_printf(MSG_DEBUG, "WNM: Not enough room for Server URL (len=%u) and Server Method (left %d)",
|
|
url_len,
|
|
(int) (ie_end - pos));
|
|
break;
|
|
}
|
|
url = os_malloc(url_len + 1);
|
|
if (url == NULL)
|
|
break;
|
|
os_memcpy(url, pos, url_len);
|
|
url[url_len] = '\0';
|
|
osu_method = pos[url_len];
|
|
}
|
|
hs20_rx_subscription_remediation(wpa_s, url,
|
|
osu_method);
|
|
os_free(url);
|
|
pos = next;
|
|
continue;
|
|
}
|
|
|
|
if (ie == WLAN_EID_VENDOR_SPECIFIC && ie_len >= 8 &&
|
|
WPA_GET_BE24(pos) == OUI_WFA &&
|
|
pos[3] == HS20_WNM_DEAUTH_IMMINENT_NOTICE) {
|
|
const u8 *ie_end;
|
|
u8 url_len;
|
|
char *url;
|
|
u8 code;
|
|
u16 reauth_delay;
|
|
|
|
ie_end = pos + ie_len;
|
|
pos += 4;
|
|
code = *pos++;
|
|
reauth_delay = WPA_GET_LE16(pos);
|
|
pos += 2;
|
|
url_len = *pos++;
|
|
wpa_printf(MSG_DEBUG, "WNM: HS 2.0 Deauthentication "
|
|
"Imminent - Reason Code %u "
|
|
"Re-Auth Delay %u URL Length %u",
|
|
code, reauth_delay, url_len);
|
|
if (pos + url_len > ie_end)
|
|
break;
|
|
url = os_malloc(url_len + 1);
|
|
if (url == NULL)
|
|
break;
|
|
os_memcpy(url, pos, url_len);
|
|
url[url_len] = '\0';
|
|
hs20_rx_deauth_imminent_notice(wpa_s, code,
|
|
reauth_delay, url);
|
|
os_free(url);
|
|
pos = next;
|
|
continue;
|
|
}
|
|
#endif /* CONFIG_HS20 */
|
|
|
|
pos = next;
|
|
}
|
|
}
|
|
|
|
|
|
static void ieee802_11_rx_wnm_notif_req(struct wpa_supplicant *wpa_s,
|
|
const u8 *sa, const u8 *frm, int len)
|
|
{
|
|
const u8 *pos, *end;
|
|
u8 dialog_token, type;
|
|
|
|
/* Dialog Token [1] | Type [1] | Subelements */
|
|
|
|
if (len < 2 || sa == NULL)
|
|
return;
|
|
end = frm + len;
|
|
pos = frm;
|
|
dialog_token = *pos++;
|
|
type = *pos++;
|
|
|
|
wpa_dbg(wpa_s, MSG_DEBUG, "WNM: Received WNM-Notification Request "
|
|
"(dialog_token %u type %u sa " MACSTR ")",
|
|
dialog_token, type, MAC2STR(sa));
|
|
wpa_hexdump(MSG_DEBUG, "WNM-Notification Request subelements",
|
|
pos, end - pos);
|
|
|
|
if (wpa_s->wpa_state != WPA_COMPLETED ||
|
|
os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) {
|
|
wpa_dbg(wpa_s, MSG_DEBUG, "WNM: WNM-Notification frame not "
|
|
"from our AP - ignore it");
|
|
return;
|
|
}
|
|
|
|
switch (type) {
|
|
case 1:
|
|
ieee802_11_rx_wnm_notif_req_wfa(wpa_s, sa, pos, end - pos);
|
|
break;
|
|
default:
|
|
wpa_dbg(wpa_s, MSG_DEBUG, "WNM: Ignore unknown "
|
|
"WNM-Notification type %u", type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
void ieee802_11_rx_wnm_action(struct wpa_supplicant *wpa_s,
|
|
const struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
const u8 *pos, *end;
|
|
u8 act;
|
|
|
|
if (len < IEEE80211_HDRLEN + 2)
|
|
return;
|
|
|
|
pos = &mgmt->u.action.category;
|
|
pos++;
|
|
act = *pos++;
|
|
end = ((const u8 *) mgmt) + len;
|
|
|
|
wpa_printf(MSG_DEBUG, "WNM: RX action %u from " MACSTR,
|
|
act, MAC2STR(mgmt->sa));
|
|
if (wpa_s->wpa_state < WPA_ASSOCIATED ||
|
|
os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) != 0) {
|
|
wpa_printf(MSG_DEBUG, "WNM: Ignore unexpected WNM Action "
|
|
"frame");
|
|
return;
|
|
}
|
|
|
|
switch (act) {
|
|
case WNM_BSS_TRANS_MGMT_REQ:
|
|
ieee802_11_rx_bss_trans_mgmt_req(wpa_s, pos, end,
|
|
!(mgmt->da[0] & 0x01));
|
|
break;
|
|
case WNM_SLEEP_MODE_RESP:
|
|
ieee802_11_rx_wnmsleep_resp(wpa_s, pos, end - pos);
|
|
break;
|
|
case WNM_NOTIFICATION_REQ:
|
|
ieee802_11_rx_wnm_notif_req(wpa_s, mgmt->sa, pos, end - pos);
|
|
break;
|
|
default:
|
|
wpa_printf(MSG_ERROR, "WNM: Unknown request");
|
|
break;
|
|
}
|
|
}
|