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hostap/wpa_supplicant/dpp_supplicant.c
Jouni Malinen 15018d4f4a DPP2: Fix auth termination after receiving Configurator backup 
remove_on_tx_status needs to be set in this case even if
dpp_config_processing=2 is used since there will be no connection
attempt when receiving a Configurator backup instead of station config
object.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2020-07-23 18:01:55 +03:00

3759 lines
102 KiB
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/*
* wpa_supplicant - DPP
* Copyright (c) 2017, Qualcomm Atheros, Inc.
* Copyright (c) 2018-2020, The Linux Foundation
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "utils/eloop.h"
#include "utils/ip_addr.h"
#include "utils/base64.h"
#include "common/dpp.h"
#include "common/gas.h"
#include "common/gas_server.h"
#include "rsn_supp/wpa.h"
#include "rsn_supp/pmksa_cache.h"
#include "wpa_supplicant_i.h"
#include "config.h"
#include "driver_i.h"
#include "offchannel.h"
#include "gas_query.h"
#include "bss.h"
#include "scan.h"
#include "notify.h"
#include "dpp_supplicant.h"
static int wpas_dpp_listen_start(struct wpa_supplicant *wpa_s,
unsigned int freq);
static void wpas_dpp_reply_wait_timeout(void *eloop_ctx, void *timeout_ctx);
static void wpas_dpp_auth_success(struct wpa_supplicant *wpa_s, int initiator);
static void wpas_dpp_tx_status(struct wpa_supplicant *wpa_s,
unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid,
const u8 *data, size_t data_len,
enum offchannel_send_action_result result);
static void wpas_dpp_init_timeout(void *eloop_ctx, void *timeout_ctx);
static int wpas_dpp_auth_init_next(struct wpa_supplicant *wpa_s);
static void
wpas_dpp_tx_pkex_status(struct wpa_supplicant *wpa_s,
unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid,
const u8 *data, size_t data_len,
enum offchannel_send_action_result result);
#ifdef CONFIG_DPP2
static void wpas_dpp_reconfig_reply_wait_timeout(void *eloop_ctx,
void *timeout_ctx);
static void wpas_dpp_start_gas_client(struct wpa_supplicant *wpa_s);
#endif /* CONFIG_DPP2 */
static const u8 broadcast[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
/* Use a hardcoded Transaction ID 1 in Peer Discovery frames since there is only
* a single transaction in progress at any point in time. */
static const u8 TRANSACTION_ID = 1;
/**
* wpas_dpp_qr_code - Parse and add DPP bootstrapping info from a QR Code
* @wpa_s: Pointer to wpa_supplicant data
* @cmd: DPP URI read from a QR Code
* Returns: Identifier of the stored info or -1 on failure
*/
int wpas_dpp_qr_code(struct wpa_supplicant *wpa_s, const char *cmd)
{
struct dpp_bootstrap_info *bi;
struct dpp_authentication *auth = wpa_s->dpp_auth;
bi = dpp_add_qr_code(wpa_s->dpp, cmd);
if (!bi)
return -1;
if (auth && auth->response_pending &&
dpp_notify_new_qr_code(auth, bi) == 1) {
wpa_printf(MSG_DEBUG,
"DPP: Sending out pending authentication response");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR
" freq=%u type=%d",
MAC2STR(auth->peer_mac_addr), auth->curr_freq,
DPP_PA_AUTHENTICATION_RESP);
offchannel_send_action(wpa_s, auth->curr_freq,
auth->peer_mac_addr, wpa_s->own_addr,
broadcast,
wpabuf_head(auth->resp_msg),
wpabuf_len(auth->resp_msg),
500, wpas_dpp_tx_status, 0);
}
return bi->id;
}
/**
* wpas_dpp_nfc_uri - Parse and add DPP bootstrapping info from NFC Tag (URI)
* @wpa_s: Pointer to wpa_supplicant data
* @cmd: DPP URI read from a NFC Tag (URI NDEF message)
* Returns: Identifier of the stored info or -1 on failure
*/
int wpas_dpp_nfc_uri(struct wpa_supplicant *wpa_s, const char *cmd)
{
struct dpp_bootstrap_info *bi;
bi = dpp_add_nfc_uri(wpa_s->dpp, cmd);
if (!bi)
return -1;
return bi->id;
}
int wpas_dpp_nfc_handover_req(struct wpa_supplicant *wpa_s, const char *cmd)
{
const char *pos;
struct dpp_bootstrap_info *peer_bi, *own_bi;
pos = os_strstr(cmd, " own=");
if (!pos)
return -1;
pos += 5;
own_bi = dpp_bootstrap_get_id(wpa_s->dpp, atoi(pos));
if (!own_bi)
return -1;
own_bi->nfc_negotiated = 1;
pos = os_strstr(cmd, " uri=");
if (!pos)
return -1;
pos += 5;
peer_bi = dpp_add_nfc_uri(wpa_s->dpp, pos);
if (!peer_bi) {
wpa_printf(MSG_INFO,
"DPP: Failed to parse URI from NFC Handover Request");
return -1;
}
if (dpp_nfc_update_bi(own_bi, peer_bi) < 0)
return -1;
return peer_bi->id;
}
int wpas_dpp_nfc_handover_sel(struct wpa_supplicant *wpa_s, const char *cmd)
{
const char *pos;
struct dpp_bootstrap_info *peer_bi, *own_bi;
pos = os_strstr(cmd, " own=");
if (!pos)
return -1;
pos += 5;
own_bi = dpp_bootstrap_get_id(wpa_s->dpp, atoi(pos));
if (!own_bi)
return -1;
own_bi->nfc_negotiated = 1;
pos = os_strstr(cmd, " uri=");
if (!pos)
return -1;
pos += 5;
peer_bi = dpp_add_nfc_uri(wpa_s->dpp, pos);
if (!peer_bi) {
wpa_printf(MSG_INFO,
"DPP: Failed to parse URI from NFC Handover Select");
return -1;
}
if (peer_bi->curve != own_bi->curve) {
wpa_printf(MSG_INFO,
"DPP: Peer (NFC Handover Selector) used different curve");
return -1;
}
return peer_bi->id;
}
static void wpas_dpp_auth_resp_retry_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct dpp_authentication *auth = wpa_s->dpp_auth;
if (!auth || !auth->resp_msg)
return;
wpa_printf(MSG_DEBUG,
"DPP: Retry Authentication Response after timeout");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR
" freq=%u type=%d",
MAC2STR(auth->peer_mac_addr), auth->curr_freq,
DPP_PA_AUTHENTICATION_RESP);
offchannel_send_action(wpa_s, auth->curr_freq, auth->peer_mac_addr,
wpa_s->own_addr, broadcast,
wpabuf_head(auth->resp_msg),
wpabuf_len(auth->resp_msg),
500, wpas_dpp_tx_status, 0);
}
static void wpas_dpp_auth_resp_retry(struct wpa_supplicant *wpa_s)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
unsigned int wait_time, max_tries;
if (!auth || !auth->resp_msg)
return;
if (wpa_s->dpp_resp_max_tries)
max_tries = wpa_s->dpp_resp_max_tries;
else
max_tries = 5;
auth->auth_resp_tries++;
if (auth->auth_resp_tries >= max_tries) {
wpa_printf(MSG_INFO, "DPP: No confirm received from initiator - stopping exchange");
offchannel_send_action_done(wpa_s);
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
return;
}
if (wpa_s->dpp_resp_retry_time)
wait_time = wpa_s->dpp_resp_retry_time;
else
wait_time = 1000;
wpa_printf(MSG_DEBUG,
"DPP: Schedule retransmission of Authentication Response frame in %u ms",
wait_time);
eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s, NULL);
eloop_register_timeout(wait_time / 1000,
(wait_time % 1000) * 1000,
wpas_dpp_auth_resp_retry_timeout, wpa_s, NULL);
}
static void wpas_dpp_try_to_connect(struct wpa_supplicant *wpa_s)
{
wpa_printf(MSG_DEBUG, "DPP: Trying to connect to the new network");
wpa_s->suitable_network = 0;
wpa_s->no_suitable_network = 0;
wpa_s->disconnected = 0;
wpa_s->reassociate = 1;
wpa_s->scan_runs = 0;
wpa_s->normal_scans = 0;
wpa_supplicant_cancel_sched_scan(wpa_s);
wpa_supplicant_req_scan(wpa_s, 0, 0);
}
#ifdef CONFIG_DPP2
static void wpas_dpp_stop_listen_for_tx(struct wpa_supplicant *wpa_s,
unsigned int freq,
unsigned int wait_time)
{
struct os_reltime now, res;
unsigned int remaining;
if (!wpa_s->dpp_listen_freq)
return;
os_get_reltime(&now);
if (os_reltime_before(&now, &wpa_s->dpp_listen_end)) {
os_reltime_sub(&wpa_s->dpp_listen_end, &now, &res);
remaining = res.sec * 1000 + res.usec / 1000;
} else {
remaining = 0;
}
if (wpa_s->dpp_listen_freq == freq && remaining > wait_time)
return;
wpa_printf(MSG_DEBUG,
"DPP: Stop listen on %u MHz ending in %u ms to allow immediate TX on %u MHz for %u ms",
wpa_s->dpp_listen_freq, remaining, freq, wait_time);
wpas_dpp_listen_stop(wpa_s);
/* TODO: Restart listen in some cases after TX? */
}
static void wpas_dpp_conn_status_result_timeout(void *eloop_ctx,
void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct dpp_authentication *auth = wpa_s->dpp_auth;
enum dpp_status_error result;
if (!auth || !auth->conn_status_requested)
return;
wpa_printf(MSG_DEBUG,
"DPP: Connection timeout - report Connection Status Result");
if (wpa_s->suitable_network)
result = DPP_STATUS_AUTH_FAILURE;
else if (wpa_s->no_suitable_network)
result = DPP_STATUS_NO_AP;
else
result = 255; /* What to report here for unexpected state? */
if (wpa_s->wpa_state == WPA_SCANNING)
wpas_abort_ongoing_scan(wpa_s);
wpas_dpp_send_conn_status_result(wpa_s, result);
}
static char * wpas_dpp_scan_channel_list(struct wpa_supplicant *wpa_s)
{
char *str, *end, *pos;
size_t len;
unsigned int i;
u8 last_op_class = 0;
int res;
if (!wpa_s->last_scan_freqs || !wpa_s->num_last_scan_freqs)
return NULL;
len = wpa_s->num_last_scan_freqs * 8;
str = os_zalloc(len);
if (!str)
return NULL;
end = str + len;
pos = str;
for (i = 0; i < wpa_s->num_last_scan_freqs; i++) {
enum hostapd_hw_mode mode;
u8 op_class, channel;
mode = ieee80211_freq_to_channel_ext(wpa_s->last_scan_freqs[i],
0, 0, &op_class, &channel);
if (mode == NUM_HOSTAPD_MODES)
continue;
if (op_class == last_op_class)
res = os_snprintf(pos, end - pos, ",%d", channel);
else
res = os_snprintf(pos, end - pos, "%s%d/%d",
pos == str ? "" : ",",
op_class, channel);
if (os_snprintf_error(end - pos, res)) {
*pos = '\0';
break;
}
pos += res;
last_op_class = op_class;
}
if (pos == str) {
os_free(str);
str = NULL;
}
return str;
}
void wpas_dpp_send_conn_status_result(struct wpa_supplicant *wpa_s,
enum dpp_status_error result)
{
struct wpabuf *msg;
const char *channel_list = NULL;
char *channel_list_buf = NULL;
struct wpa_ssid *ssid = wpa_s->current_ssid;
struct dpp_authentication *auth = wpa_s->dpp_auth;
eloop_cancel_timeout(wpas_dpp_conn_status_result_timeout, wpa_s, NULL);
if (!auth || !auth->conn_status_requested)
return;
auth->conn_status_requested = 0;
wpa_printf(MSG_DEBUG, "DPP: Report connection status result %d",
result);
if (result == DPP_STATUS_NO_AP) {
channel_list_buf = wpas_dpp_scan_channel_list(wpa_s);
channel_list = channel_list_buf;
}
msg = dpp_build_conn_status_result(auth, result,
ssid ? ssid->ssid :
wpa_s->dpp_last_ssid,
ssid ? ssid->ssid_len :
wpa_s->dpp_last_ssid_len,
channel_list);
os_free(channel_list_buf);
if (!msg) {
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
return;
}
wpa_msg(wpa_s, MSG_INFO,
DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(auth->peer_mac_addr), auth->curr_freq,
DPP_PA_CONNECTION_STATUS_RESULT);
offchannel_send_action(wpa_s, auth->curr_freq,
auth->peer_mac_addr, wpa_s->own_addr, broadcast,
wpabuf_head(msg), wpabuf_len(msg),
500, wpas_dpp_tx_status, 0);
wpabuf_free(msg);
/* This exchange will be terminated in the TX status handler */
auth->remove_on_tx_status = 1;
return;
}
void wpas_dpp_connected(struct wpa_supplicant *wpa_s)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
if (auth && auth->conn_status_requested)
wpas_dpp_send_conn_status_result(wpa_s, DPP_STATUS_OK);
}
#endif /* CONFIG_DPP2 */
static void wpas_dpp_tx_status(struct wpa_supplicant *wpa_s,
unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid,
const u8 *data, size_t data_len,
enum offchannel_send_action_result result)
{
const char *res_txt;
struct dpp_authentication *auth = wpa_s->dpp_auth;
res_txt = result == OFFCHANNEL_SEND_ACTION_SUCCESS ? "SUCCESS" :
(result == OFFCHANNEL_SEND_ACTION_NO_ACK ? "no-ACK" :
"FAILED");
wpa_printf(MSG_DEBUG, "DPP: TX status: freq=%u dst=" MACSTR
" result=%s", freq, MAC2STR(dst), res_txt);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX_STATUS "dst=" MACSTR
" freq=%u result=%s", MAC2STR(dst), freq, res_txt);
if (!wpa_s->dpp_auth) {
wpa_printf(MSG_DEBUG,
"DPP: Ignore TX status since there is no ongoing authentication exchange");
return;
}
#ifdef CONFIG_DPP2
if (auth->connect_on_tx_status) {
auth->connect_on_tx_status = 0;
wpa_printf(MSG_DEBUG,
"DPP: Try to connect after completed configuration result");
wpas_dpp_try_to_connect(wpa_s);
if (auth->conn_status_requested) {
wpa_printf(MSG_DEBUG,
"DPP: Start 15 second timeout for reporting connection status result");
eloop_cancel_timeout(
wpas_dpp_conn_status_result_timeout,
wpa_s, NULL);
eloop_register_timeout(
15, 0, wpas_dpp_conn_status_result_timeout,
wpa_s, NULL);
} else {
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
}
return;
}
#endif /* CONFIG_DPP2 */
if (wpa_s->dpp_auth->remove_on_tx_status) {
wpa_printf(MSG_DEBUG,
"DPP: Terminate authentication exchange due to a request to do so on TX status");
eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s,
NULL);
#ifdef CONFIG_DPP2
eloop_cancel_timeout(wpas_dpp_reconfig_reply_wait_timeout,
wpa_s, NULL);
#endif /* CONFIG_DPP2 */
offchannel_send_action_done(wpa_s);
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
return;
}
if (wpa_s->dpp_auth_ok_on_ack)
wpas_dpp_auth_success(wpa_s, 1);
if (!is_broadcast_ether_addr(dst) &&
result != OFFCHANNEL_SEND_ACTION_SUCCESS) {
wpa_printf(MSG_DEBUG,
"DPP: Unicast DPP Action frame was not ACKed");
if (auth->waiting_auth_resp) {
/* In case of DPP Authentication Request frame, move to
* the next channel immediately. */
offchannel_send_action_done(wpa_s);
wpas_dpp_auth_init_next(wpa_s);
return;
}
if (auth->waiting_auth_conf) {
wpas_dpp_auth_resp_retry(wpa_s);
return;
}
}
if (!is_broadcast_ether_addr(dst) && auth->waiting_auth_resp &&
result == OFFCHANNEL_SEND_ACTION_SUCCESS) {
/* Allow timeout handling to stop iteration if no response is
* received from a peer that has ACKed a request. */
auth->auth_req_ack = 1;
}
if (!wpa_s->dpp_auth_ok_on_ack && wpa_s->dpp_auth->neg_freq > 0 &&
wpa_s->dpp_auth->curr_freq != wpa_s->dpp_auth->neg_freq) {
wpa_printf(MSG_DEBUG,
"DPP: Move from curr_freq %u MHz to neg_freq %u MHz for response",
wpa_s->dpp_auth->curr_freq,
wpa_s->dpp_auth->neg_freq);
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_start(wpa_s, wpa_s->dpp_auth->neg_freq);
}
if (wpa_s->dpp_auth_ok_on_ack)
wpa_s->dpp_auth_ok_on_ack = 0;
}
static void wpas_dpp_reply_wait_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct dpp_authentication *auth = wpa_s->dpp_auth;
unsigned int freq;
struct os_reltime now, diff;
unsigned int wait_time, diff_ms;
if (!auth || !auth->waiting_auth_resp)
return;
wait_time = wpa_s->dpp_resp_wait_time ?
wpa_s->dpp_resp_wait_time : 2000;
os_get_reltime(&now);
os_reltime_sub(&now, &wpa_s->dpp_last_init, &diff);
diff_ms = diff.sec * 1000 + diff.usec / 1000;
wpa_printf(MSG_DEBUG,
"DPP: Reply wait timeout - wait_time=%u diff_ms=%u",
wait_time, diff_ms);
if (auth->auth_req_ack && diff_ms >= wait_time) {
/* Peer ACK'ed Authentication Request frame, but did not reply
* with Authentication Response frame within two seconds. */
wpa_printf(MSG_INFO,
"DPP: No response received from responder - stopping initiation attempt");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_AUTH_INIT_FAILED);
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_stop(wpa_s);
dpp_auth_deinit(auth);
wpa_s->dpp_auth = NULL;
return;
}
if (diff_ms >= wait_time) {
/* Authentication Request frame was not ACK'ed and no reply
* was receiving within two seconds. */
wpa_printf(MSG_DEBUG,
"DPP: Continue Initiator channel iteration");
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_stop(wpa_s);
wpas_dpp_auth_init_next(wpa_s);
return;
}
/* Driver did not support 2000 ms long wait_time with TX command, so
* schedule listen operation to continue waiting for the response.
*
* DPP listen operations continue until stopped, so simply schedule a
* new call to this function at the point when the two second reply
* wait has expired. */
wait_time -= diff_ms;
freq = auth->curr_freq;
if (auth->neg_freq > 0)
freq = auth->neg_freq;
wpa_printf(MSG_DEBUG,
"DPP: Continue reply wait on channel %u MHz for %u ms",
freq, wait_time);
wpa_s->dpp_in_response_listen = 1;
wpas_dpp_listen_start(wpa_s, freq);
eloop_register_timeout(wait_time / 1000, (wait_time % 1000) * 1000,
wpas_dpp_reply_wait_timeout, wpa_s, NULL);
}
static void wpas_dpp_set_testing_options(struct wpa_supplicant *wpa_s,
struct dpp_authentication *auth)
{
#ifdef CONFIG_TESTING_OPTIONS
if (wpa_s->dpp_config_obj_override)
auth->config_obj_override =
os_strdup(wpa_s->dpp_config_obj_override);
if (wpa_s->dpp_discovery_override)
auth->discovery_override =
os_strdup(wpa_s->dpp_discovery_override);
if (wpa_s->dpp_groups_override)
auth->groups_override =
os_strdup(wpa_s->dpp_groups_override);
auth->ignore_netaccesskey_mismatch =
wpa_s->dpp_ignore_netaccesskey_mismatch;
#endif /* CONFIG_TESTING_OPTIONS */
}
static void wpas_dpp_init_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
if (!wpa_s->dpp_auth)
return;
wpa_printf(MSG_DEBUG, "DPP: Retry initiation after timeout");
wpas_dpp_auth_init_next(wpa_s);
}
static int wpas_dpp_auth_init_next(struct wpa_supplicant *wpa_s)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
const u8 *dst;
unsigned int wait_time, max_wait_time, freq, max_tries, used;
struct os_reltime now, diff;
wpa_s->dpp_in_response_listen = 0;
if (!auth)
return -1;
if (auth->freq_idx == 0)
os_get_reltime(&wpa_s->dpp_init_iter_start);
if (auth->freq_idx >= auth->num_freq) {
auth->num_freq_iters++;
if (wpa_s->dpp_init_max_tries)
max_tries = wpa_s->dpp_init_max_tries;
else
max_tries = 5;
if (auth->num_freq_iters >= max_tries || auth->auth_req_ack) {
wpa_printf(MSG_INFO,
"DPP: No response received from responder - stopping initiation attempt");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_AUTH_INIT_FAILED);
eloop_cancel_timeout(wpas_dpp_reply_wait_timeout,
wpa_s, NULL);
offchannel_send_action_done(wpa_s);
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
return -1;
}
auth->freq_idx = 0;
eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
if (wpa_s->dpp_init_retry_time)
wait_time = wpa_s->dpp_init_retry_time;
else
wait_time = 10000;
os_get_reltime(&now);
os_reltime_sub(&now, &wpa_s->dpp_init_iter_start, &diff);
used = diff.sec * 1000 + diff.usec / 1000;
if (used > wait_time)
wait_time = 0;
else
wait_time -= used;
wpa_printf(MSG_DEBUG, "DPP: Next init attempt in %u ms",
wait_time);
eloop_register_timeout(wait_time / 1000,
(wait_time % 1000) * 1000,
wpas_dpp_init_timeout, wpa_s,
NULL);
return 0;
}
freq = auth->freq[auth->freq_idx++];
auth->curr_freq = freq;
if (is_zero_ether_addr(auth->peer_bi->mac_addr))
dst = broadcast;
else
dst = auth->peer_bi->mac_addr;
wpa_s->dpp_auth_ok_on_ack = 0;
eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
wait_time = wpa_s->max_remain_on_chan;
max_wait_time = wpa_s->dpp_resp_wait_time ?
wpa_s->dpp_resp_wait_time : 2000;
if (wait_time > max_wait_time)
wait_time = max_wait_time;
wait_time += 10; /* give the driver some extra time to complete */
eloop_register_timeout(wait_time / 1000, (wait_time % 1000) * 1000,
wpas_dpp_reply_wait_timeout,
wpa_s, NULL);
wait_time -= 10;
if (auth->neg_freq > 0 && freq != auth->neg_freq) {
wpa_printf(MSG_DEBUG,
"DPP: Initiate on %u MHz and move to neg_freq %u MHz for response",
freq, auth->neg_freq);
}
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(dst), freq, DPP_PA_AUTHENTICATION_REQ);
auth->auth_req_ack = 0;
os_get_reltime(&wpa_s->dpp_last_init);
return offchannel_send_action(wpa_s, freq, dst,
wpa_s->own_addr, broadcast,
wpabuf_head(auth->req_msg),
wpabuf_len(auth->req_msg),
wait_time, wpas_dpp_tx_status, 0);
}
int wpas_dpp_auth_init(struct wpa_supplicant *wpa_s, const char *cmd)
{
const char *pos;
struct dpp_bootstrap_info *peer_bi, *own_bi = NULL;
struct dpp_authentication *auth;
u8 allowed_roles = DPP_CAPAB_CONFIGURATOR;
unsigned int neg_freq = 0;
int tcp = 0;
#ifdef CONFIG_DPP2
int tcp_port = DPP_TCP_PORT;
struct hostapd_ip_addr ipaddr;
char *addr;
#endif /* CONFIG_DPP2 */
wpa_s->dpp_gas_client = 0;
pos = os_strstr(cmd, " peer=");
if (!pos)
return -1;
pos += 6;
peer_bi = dpp_bootstrap_get_id(wpa_s->dpp, atoi(pos));
if (!peer_bi) {
wpa_printf(MSG_INFO,
"DPP: Could not find bootstrapping info for the identified peer");
return -1;
}
#ifdef CONFIG_DPP2
pos = os_strstr(cmd, " tcp_port=");
if (pos) {
pos += 10;
tcp_port = atoi(pos);
}
addr = get_param(cmd, " tcp_addr=");
if (addr) {
int res;
res = hostapd_parse_ip_addr(addr, &ipaddr);
os_free(addr);
if (res)
return -1;
tcp = 1;
}
#endif /* CONFIG_DPP2 */
pos = os_strstr(cmd, " own=");
if (pos) {
pos += 5;
own_bi = dpp_bootstrap_get_id(wpa_s->dpp, atoi(pos));
if (!own_bi) {
wpa_printf(MSG_INFO,
"DPP: Could not find bootstrapping info for the identified local entry");
return -1;
}
if (peer_bi->curve != own_bi->curve) {
wpa_printf(MSG_INFO,
"DPP: Mismatching curves in bootstrapping info (peer=%s own=%s)",
peer_bi->curve->name, own_bi->curve->name);
return -1;
}
}
pos = os_strstr(cmd, " role=");
if (pos) {
pos += 6;
if (os_strncmp(pos, "configurator", 12) == 0)
allowed_roles = DPP_CAPAB_CONFIGURATOR;
else if (os_strncmp(pos, "enrollee", 8) == 0)
allowed_roles = DPP_CAPAB_ENROLLEE;
else if (os_strncmp(pos, "either", 6) == 0)
allowed_roles = DPP_CAPAB_CONFIGURATOR |
DPP_CAPAB_ENROLLEE;
else
goto fail;
}
pos = os_strstr(cmd, " netrole=");
if (pos) {
pos += 9;
if (os_strncmp(pos, "ap", 2) == 0)
wpa_s->dpp_netrole = DPP_NETROLE_AP;
else if (os_strncmp(pos, "configurator", 12) == 0)
wpa_s->dpp_netrole = DPP_NETROLE_CONFIGURATOR;
else
wpa_s->dpp_netrole = DPP_NETROLE_STA;
} else {
wpa_s->dpp_netrole = DPP_NETROLE_STA;
}
pos = os_strstr(cmd, " neg_freq=");
if (pos)
neg_freq = atoi(pos + 10);
if (!tcp && wpa_s->dpp_auth) {
eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s,
NULL);
#ifdef CONFIG_DPP2
eloop_cancel_timeout(wpas_dpp_reconfig_reply_wait_timeout,
wpa_s, NULL);
#endif /* CONFIG_DPP2 */
offchannel_send_action_done(wpa_s);
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
}
auth = dpp_auth_init(wpa_s->dpp, wpa_s, peer_bi, own_bi, allowed_roles,
neg_freq, wpa_s->hw.modes, wpa_s->hw.num_modes);
if (!auth)
goto fail;
wpas_dpp_set_testing_options(wpa_s, auth);
if (dpp_set_configurator(auth, cmd) < 0) {
dpp_auth_deinit(auth);
goto fail;
}
auth->neg_freq = neg_freq;
if (!is_zero_ether_addr(peer_bi->mac_addr))
os_memcpy(auth->peer_mac_addr, peer_bi->mac_addr, ETH_ALEN);
#ifdef CONFIG_DPP2
if (tcp)
return dpp_tcp_init(wpa_s->dpp, auth, &ipaddr, tcp_port,
wpa_s->conf->dpp_name);
#endif /* CONFIG_DPP2 */
wpa_s->dpp_auth = auth;
return wpas_dpp_auth_init_next(wpa_s);
fail:
return -1;
}
struct wpas_dpp_listen_work {
unsigned int freq;
unsigned int duration;
struct wpabuf *probe_resp_ie;
};
static void wpas_dpp_listen_work_free(struct wpas_dpp_listen_work *lwork)
{
if (!lwork)
return;
os_free(lwork);
}
static void wpas_dpp_listen_work_done(struct wpa_supplicant *wpa_s)
{
struct wpas_dpp_listen_work *lwork;
if (!wpa_s->dpp_listen_work)
return;
lwork = wpa_s->dpp_listen_work->ctx;
wpas_dpp_listen_work_free(lwork);
radio_work_done(wpa_s->dpp_listen_work);
wpa_s->dpp_listen_work = NULL;
}
static void dpp_start_listen_cb(struct wpa_radio_work *work, int deinit)
{
struct wpa_supplicant *wpa_s = work->wpa_s;
struct wpas_dpp_listen_work *lwork = work->ctx;
if (deinit) {
if (work->started) {
wpa_s->dpp_listen_work = NULL;
wpas_dpp_listen_stop(wpa_s);
}
wpas_dpp_listen_work_free(lwork);
return;
}
wpa_s->dpp_listen_work = work;
wpa_s->dpp_pending_listen_freq = lwork->freq;
if (wpa_drv_remain_on_channel(wpa_s, lwork->freq,
wpa_s->max_remain_on_chan) < 0) {
wpa_printf(MSG_DEBUG,
"DPP: Failed to request the driver to remain on channel (%u MHz) for listen",
lwork->freq);
wpa_s->dpp_listen_freq = 0;
wpas_dpp_listen_work_done(wpa_s);
wpa_s->dpp_pending_listen_freq = 0;
return;
}
wpa_s->off_channel_freq = 0;
wpa_s->roc_waiting_drv_freq = lwork->freq;
wpa_drv_dpp_listen(wpa_s, true);
}
static int wpas_dpp_listen_start(struct wpa_supplicant *wpa_s,
unsigned int freq)
{
struct wpas_dpp_listen_work *lwork;
if (wpa_s->dpp_listen_work) {
wpa_printf(MSG_DEBUG,
"DPP: Reject start_listen since dpp_listen_work already exists");
return -1;
}
if (wpa_s->dpp_listen_freq)
wpas_dpp_listen_stop(wpa_s);
wpa_s->dpp_listen_freq = freq;
lwork = os_zalloc(sizeof(*lwork));
if (!lwork)
return -1;
lwork->freq = freq;
if (radio_add_work(wpa_s, freq, "dpp-listen", 0, dpp_start_listen_cb,
lwork) < 0) {
wpas_dpp_listen_work_free(lwork);
return -1;
}
return 0;
}
int wpas_dpp_listen(struct wpa_supplicant *wpa_s, const char *cmd)
{
int freq;
freq = atoi(cmd);
if (freq <= 0)
return -1;
if (os_strstr(cmd, " role=configurator"))
wpa_s->dpp_allowed_roles = DPP_CAPAB_CONFIGURATOR;
else if (os_strstr(cmd, " role=enrollee"))
wpa_s->dpp_allowed_roles = DPP_CAPAB_ENROLLEE;
else
wpa_s->dpp_allowed_roles = DPP_CAPAB_CONFIGURATOR |
DPP_CAPAB_ENROLLEE;
wpa_s->dpp_qr_mutual = os_strstr(cmd, " qr=mutual") != NULL;
if (os_strstr(cmd, " netrole=ap"))
wpa_s->dpp_netrole = DPP_NETROLE_AP;
else if (os_strstr(cmd, " netrole=configurator"))
wpa_s->dpp_netrole = DPP_NETROLE_CONFIGURATOR;
else
wpa_s->dpp_netrole = DPP_NETROLE_STA;
if (wpa_s->dpp_listen_freq == (unsigned int) freq) {
wpa_printf(MSG_DEBUG, "DPP: Already listening on %u MHz",
freq);
return 0;
}
return wpas_dpp_listen_start(wpa_s, freq);
}
void wpas_dpp_listen_stop(struct wpa_supplicant *wpa_s)
{
wpa_s->dpp_in_response_listen = 0;
if (!wpa_s->dpp_listen_freq)
return;
wpa_printf(MSG_DEBUG, "DPP: Stop listen on %u MHz",
wpa_s->dpp_listen_freq);
wpa_drv_cancel_remain_on_channel(wpa_s);
wpa_drv_dpp_listen(wpa_s, false);
wpa_s->dpp_listen_freq = 0;
wpas_dpp_listen_work_done(wpa_s);
}
void wpas_dpp_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
unsigned int freq, unsigned int duration)
{
if (wpa_s->dpp_listen_freq != freq)
return;
wpa_printf(MSG_DEBUG,
"DPP: Remain-on-channel started for listen on %u MHz for %u ms",
freq, duration);
os_get_reltime(&wpa_s->dpp_listen_end);
wpa_s->dpp_listen_end.usec += duration * 1000;
while (wpa_s->dpp_listen_end.usec >= 1000000) {
wpa_s->dpp_listen_end.sec++;
wpa_s->dpp_listen_end.usec -= 1000000;
}
}
void wpas_dpp_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
unsigned int freq)
{
wpas_dpp_listen_work_done(wpa_s);
if (wpa_s->dpp_auth && wpa_s->dpp_in_response_listen) {
unsigned int new_freq;
/* Continue listen with a new remain-on-channel */
if (wpa_s->dpp_auth->neg_freq > 0)
new_freq = wpa_s->dpp_auth->neg_freq;
else
new_freq = wpa_s->dpp_auth->curr_freq;
wpa_printf(MSG_DEBUG,
"DPP: Continue wait on %u MHz for the ongoing DPP provisioning session",
new_freq);
wpas_dpp_listen_start(wpa_s, new_freq);
return;
}
if (wpa_s->dpp_listen_freq) {
/* Continue listen with a new remain-on-channel */
wpas_dpp_listen_start(wpa_s, wpa_s->dpp_listen_freq);
}
}
static void wpas_dpp_rx_auth_req(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
const u8 *r_bootstrap, *i_bootstrap;
u16 r_bootstrap_len, i_bootstrap_len;
struct dpp_bootstrap_info *own_bi = NULL, *peer_bi = NULL;
if (!wpa_s->dpp)
return;
wpa_printf(MSG_DEBUG, "DPP: Authentication Request from " MACSTR,
MAC2STR(src));
#ifdef CONFIG_DPP2
wpas_dpp_chirp_stop(wpa_s);
#endif /* CONFIG_DPP2 */
r_bootstrap = dpp_get_attr(buf, len, DPP_ATTR_R_BOOTSTRAP_KEY_HASH,
&r_bootstrap_len);
if (!r_bootstrap || r_bootstrap_len != SHA256_MAC_LEN) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
"Missing or invalid required Responder Bootstrapping Key Hash attribute");
return;
}
wpa_hexdump(MSG_MSGDUMP, "DPP: Responder Bootstrapping Key Hash",
r_bootstrap, r_bootstrap_len);
i_bootstrap = dpp_get_attr(buf, len, DPP_ATTR_I_BOOTSTRAP_KEY_HASH,
&i_bootstrap_len);
if (!i_bootstrap || i_bootstrap_len != SHA256_MAC_LEN) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
"Missing or invalid required Initiator Bootstrapping Key Hash attribute");
return;
}
wpa_hexdump(MSG_MSGDUMP, "DPP: Initiator Bootstrapping Key Hash",
i_bootstrap, i_bootstrap_len);
/* Try to find own and peer bootstrapping key matches based on the
* received hash values */
dpp_bootstrap_find_pair(wpa_s->dpp, i_bootstrap, r_bootstrap,
&own_bi, &peer_bi);
if (!own_bi) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
"No matching own bootstrapping key found - ignore message");
return;
}
if (wpa_s->dpp_auth) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
"Already in DPP authentication exchange - ignore new one");
return;
}
wpa_s->dpp_gas_client = 0;
wpa_s->dpp_auth_ok_on_ack = 0;
wpa_s->dpp_auth = dpp_auth_req_rx(wpa_s->dpp, wpa_s,
wpa_s->dpp_allowed_roles,
wpa_s->dpp_qr_mutual,
peer_bi, own_bi, freq, hdr, buf, len);
if (!wpa_s->dpp_auth) {
wpa_printf(MSG_DEBUG, "DPP: No response generated");
return;
}
wpas_dpp_set_testing_options(wpa_s, wpa_s->dpp_auth);
if (dpp_set_configurator(wpa_s->dpp_auth,
wpa_s->dpp_configurator_params) < 0) {
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
return;
}
os_memcpy(wpa_s->dpp_auth->peer_mac_addr, src, ETH_ALEN);
if (wpa_s->dpp_listen_freq &&
wpa_s->dpp_listen_freq != wpa_s->dpp_auth->curr_freq) {
wpa_printf(MSG_DEBUG,
"DPP: Stop listen on %u MHz to allow response on the request %u MHz",
wpa_s->dpp_listen_freq, wpa_s->dpp_auth->curr_freq);
wpas_dpp_listen_stop(wpa_s);
}
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(src), wpa_s->dpp_auth->curr_freq,
DPP_PA_AUTHENTICATION_RESP);
offchannel_send_action(wpa_s, wpa_s->dpp_auth->curr_freq,
src, wpa_s->own_addr, broadcast,
wpabuf_head(wpa_s->dpp_auth->resp_msg),
wpabuf_len(wpa_s->dpp_auth->resp_msg),
500, wpas_dpp_tx_status, 0);
}
static void wpas_dpp_start_gas_server(struct wpa_supplicant *wpa_s)
{
/* TODO: stop wait and start ROC */
}
static struct wpa_ssid * wpas_dpp_add_network(struct wpa_supplicant *wpa_s,
struct dpp_authentication *auth,
struct dpp_config_obj *conf)
{
struct wpa_ssid *ssid;
#ifdef CONFIG_DPP2
if (conf->akm == DPP_AKM_SAE) {
#ifdef CONFIG_SAE
struct wpa_driver_capa capa;
int res;
res = wpa_drv_get_capa(wpa_s, &capa);
if (res == 0 &&
!(capa.key_mgmt_iftype[WPA_IF_STATION] &
WPA_DRIVER_CAPA_KEY_MGMT_SAE) &&
!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SAE)) {
wpa_printf(MSG_DEBUG,
"DPP: SAE not supported by the driver");
return NULL;
}
#else /* CONFIG_SAE */
wpa_printf(MSG_DEBUG, "DPP: SAE not supported in the build");
return NULL;
#endif /* CONFIG_SAE */
}
#endif /* CONFIG_DPP2 */
ssid = wpa_config_add_network(wpa_s->conf);
if (!ssid)
return NULL;
wpas_notify_network_added(wpa_s, ssid);
wpa_config_set_network_defaults(ssid);
ssid->disabled = 1;
ssid->ssid = os_malloc(conf->ssid_len);
if (!ssid->ssid)
goto fail;
os_memcpy(ssid->ssid, conf->ssid, conf->ssid_len);
ssid->ssid_len = conf->ssid_len;
if (conf->connector) {
if (dpp_akm_dpp(conf->akm)) {
ssid->key_mgmt = WPA_KEY_MGMT_DPP;
ssid->ieee80211w = MGMT_FRAME_PROTECTION_REQUIRED;
}
ssid->dpp_connector = os_strdup(conf->connector);
if (!ssid->dpp_connector)
goto fail;
}
if (conf->c_sign_key) {
ssid->dpp_csign = os_malloc(wpabuf_len(conf->c_sign_key));
if (!ssid->dpp_csign)
goto fail;
os_memcpy(ssid->dpp_csign, wpabuf_head(conf->c_sign_key),
wpabuf_len(conf->c_sign_key));
ssid->dpp_csign_len = wpabuf_len(conf->c_sign_key);
}
if (auth->net_access_key) {
ssid->dpp_netaccesskey =
os_malloc(wpabuf_len(auth->net_access_key));
if (!ssid->dpp_netaccesskey)
goto fail;
os_memcpy(ssid->dpp_netaccesskey,
wpabuf_head(auth->net_access_key),
wpabuf_len(auth->net_access_key));
ssid->dpp_netaccesskey_len = wpabuf_len(auth->net_access_key);
ssid->dpp_netaccesskey_expiry = auth->net_access_key_expiry;
}
if (!conf->connector || dpp_akm_psk(conf->akm) ||
dpp_akm_sae(conf->akm)) {
if (!conf->connector || !dpp_akm_dpp(conf->akm))
ssid->key_mgmt = 0;
if (dpp_akm_psk(conf->akm))
ssid->key_mgmt |= WPA_KEY_MGMT_PSK |
WPA_KEY_MGMT_PSK_SHA256 | WPA_KEY_MGMT_FT_PSK;
if (dpp_akm_sae(conf->akm))
ssid->key_mgmt |= WPA_KEY_MGMT_SAE |
WPA_KEY_MGMT_FT_SAE;
ssid->ieee80211w = MGMT_FRAME_PROTECTION_OPTIONAL;
if (conf->passphrase[0]) {
if (wpa_config_set_quoted(ssid, "psk",
conf->passphrase) < 0)
goto fail;
wpa_config_update_psk(ssid);
ssid->export_keys = 1;
} else {
ssid->psk_set = conf->psk_set;
os_memcpy(ssid->psk, conf->psk, PMK_LEN);
}
}
#ifdef CONFIG_DPP2
if (conf->akm == DPP_AKM_DOT1X) {
int i;
char name[100], blobname[128];
struct wpa_config_blob *blob;
ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X |
WPA_KEY_MGMT_IEEE8021X_SHA256 |
WPA_KEY_MGMT_IEEE8021X_SHA256;
ssid->ieee80211w = MGMT_FRAME_PROTECTION_OPTIONAL;
if (conf->cacert) {
/* caCert is DER-encoded X.509v3 certificate for the
* server certificate if that is different from the
* trust root included in certBag. */
/* TODO: ssid->eap.cert.ca_cert */
}
if (conf->certs) {
for (i = 0; ; i++) {
os_snprintf(name, sizeof(name), "dpp-certs-%d",
i);
if (!wpa_config_get_blob(wpa_s->conf, name))
break;
}
blob = os_zalloc(sizeof(*blob));
if (!blob)
goto fail;
blob->len = wpabuf_len(conf->certs);
blob->name = os_strdup(name);
blob->data = os_malloc(blob->len);
if (!blob->name || !blob->data) {
wpa_config_free_blob(blob);
goto fail;
}
os_memcpy(blob->data, wpabuf_head(conf->certs),
blob->len);
os_snprintf(blobname, sizeof(blobname), "blob://%s",
name);
wpa_config_set_blob(wpa_s->conf, blob);
wpa_printf(MSG_DEBUG, "DPP: Added certificate blob %s",
name);
ssid->eap.cert.client_cert = os_strdup(blobname);
if (!ssid->eap.cert.client_cert)
goto fail;
/* TODO: ssid->eap.identity from own certificate */
if (wpa_config_set(ssid, "identity", "\"dpp-ent\"",
0) < 0)
goto fail;
}
if (auth->priv_key) {
for (i = 0; ; i++) {
os_snprintf(name, sizeof(name), "dpp-key-%d",
i);
if (!wpa_config_get_blob(wpa_s->conf, name))
break;
}
blob = os_zalloc(sizeof(*blob));
if (!blob)
goto fail;
blob->len = wpabuf_len(auth->priv_key);
blob->name = os_strdup(name);
blob->data = os_malloc(blob->len);
if (!blob->name || !blob->data) {
wpa_config_free_blob(blob);
goto fail;
}
os_memcpy(blob->data, wpabuf_head(auth->priv_key),
blob->len);
os_snprintf(blobname, sizeof(blobname), "blob://%s",
name);
wpa_config_set_blob(wpa_s->conf, blob);
wpa_printf(MSG_DEBUG, "DPP: Added private key blob %s",
name);
ssid->eap.cert.private_key = os_strdup(blobname);
if (!ssid->eap.cert.private_key)
goto fail;
}
if (conf->server_name) {
ssid->eap.cert.domain_suffix_match =
os_strdup(conf->server_name);
if (!ssid->eap.cert.domain_suffix_match)
goto fail;
}
/* TODO: Use entCreds::eapMethods */
if (wpa_config_set(ssid, "eap", "TLS", 0) < 0)
goto fail;
}
#endif /* CONFIG_DPP2 */
os_memcpy(wpa_s->dpp_last_ssid, conf->ssid, conf->ssid_len);
wpa_s->dpp_last_ssid_len = conf->ssid_len;
return ssid;
fail:
wpas_notify_network_removed(wpa_s, ssid);
wpa_config_remove_network(wpa_s->conf, ssid->id);
return NULL;
}
static int wpas_dpp_process_config(struct wpa_supplicant *wpa_s,
struct dpp_authentication *auth,
struct dpp_config_obj *conf)
{
struct wpa_ssid *ssid;
if (wpa_s->conf->dpp_config_processing < 1)
return 0;
ssid = wpas_dpp_add_network(wpa_s, auth, conf);
if (!ssid)
return -1;
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_NETWORK_ID "%d", ssid->id);
if (wpa_s->conf->dpp_config_processing == 2)
ssid->disabled = 0;
#ifndef CONFIG_NO_CONFIG_WRITE
if (wpa_s->conf->update_config &&
wpa_config_write(wpa_s->confname, wpa_s->conf))
wpa_printf(MSG_DEBUG, "DPP: Failed to update configuration");
#endif /* CONFIG_NO_CONFIG_WRITE */
return 0;
}
static void wpas_dpp_post_process_config(struct wpa_supplicant *wpa_s,
struct dpp_authentication *auth)
{
#ifdef CONFIG_DPP2
if (auth->reconfig && wpa_s->dpp_reconfig_ssid &&
wpa_config_get_network(wpa_s->conf, wpa_s->dpp_reconfig_ssid_id) ==
wpa_s->dpp_reconfig_ssid) {
wpa_printf(MSG_DEBUG,
"DPP: Remove reconfigured network profile");
wpas_notify_network_removed(wpa_s, wpa_s->dpp_reconfig_ssid);
wpa_config_remove_network(wpa_s->conf,
wpa_s->dpp_reconfig_ssid_id);
wpa_s->dpp_reconfig_ssid = NULL;
wpa_s->dpp_reconfig_ssid_id = -1;
}
#endif /* CONFIG_DPP2 */
if (wpa_s->conf->dpp_config_processing < 2)
return;
#ifdef CONFIG_DPP2
if (auth->peer_version >= 2) {
wpa_printf(MSG_DEBUG,
"DPP: Postpone connection attempt to wait for completion of DPP Configuration Result");
auth->connect_on_tx_status = 1;
return;
}
#endif /* CONFIG_DPP2 */
wpas_dpp_try_to_connect(wpa_s);
}
static int wpas_dpp_handle_config_obj(struct wpa_supplicant *wpa_s,
struct dpp_authentication *auth,
struct dpp_config_obj *conf)
{
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_RECEIVED);
if (conf->ssid_len)
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONFOBJ_SSID "%s",
wpa_ssid_txt(conf->ssid, conf->ssid_len));
if (conf->ssid_charset)
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONFOBJ_SSID_CHARSET "%d",
conf->ssid_charset);
if (conf->connector) {
/* TODO: Save the Connector and consider using a command
* to fetch the value instead of sending an event with
* it. The Connector could end up being larger than what
* most clients are ready to receive as an event
* message. */
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONNECTOR "%s",
conf->connector);
}
if (conf->c_sign_key) {
char *hex;
size_t hexlen;
hexlen = 2 * wpabuf_len(conf->c_sign_key) + 1;
hex = os_malloc(hexlen);
if (hex) {
wpa_snprintf_hex(hex, hexlen,
wpabuf_head(conf->c_sign_key),
wpabuf_len(conf->c_sign_key));
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_C_SIGN_KEY "%s",
hex);
os_free(hex);
}
}
if (auth->net_access_key) {
char *hex;
size_t hexlen;
hexlen = 2 * wpabuf_len(auth->net_access_key) + 1;
hex = os_malloc(hexlen);
if (hex) {
wpa_snprintf_hex(hex, hexlen,
wpabuf_head(auth->net_access_key),
wpabuf_len(auth->net_access_key));
if (auth->net_access_key_expiry)
wpa_msg(wpa_s, MSG_INFO,
DPP_EVENT_NET_ACCESS_KEY "%s %lu", hex,
(long unsigned)
auth->net_access_key_expiry);
else
wpa_msg(wpa_s, MSG_INFO,
DPP_EVENT_NET_ACCESS_KEY "%s", hex);
os_free(hex);
}
}
#ifdef CONFIG_DPP2
if (conf->certbag) {
char *b64;
b64 = base64_encode_no_lf(wpabuf_head(conf->certbag),
wpabuf_len(conf->certbag), NULL);
if (b64)
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CERTBAG "%s", b64);
os_free(b64);
}
if (conf->cacert) {
char *b64;
b64 = base64_encode_no_lf(wpabuf_head(conf->cacert),
wpabuf_len(conf->cacert), NULL);
if (b64)
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CACERT "%s", b64);
os_free(b64);
}
if (conf->server_name)
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_SERVER_NAME "%s",
conf->server_name);
#endif /* CONFIG_DPP2 */
return wpas_dpp_process_config(wpa_s, auth, conf);
}
static int wpas_dpp_handle_key_pkg(struct wpa_supplicant *wpa_s,
struct dpp_asymmetric_key *key)
{
#ifdef CONFIG_DPP2
int res;
if (!key)
return 0;
wpa_printf(MSG_DEBUG, "DPP: Received Configurator backup");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_RECEIVED);
wpa_s->dpp_conf_backup_received = true;
while (key) {
res = dpp_configurator_from_backup(wpa_s->dpp, key);
if (res < 0)
return -1;
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONFIGURATOR_ID "%d",
res);
key = key->next;
}
#endif /* CONFIG_DPP2 */
return 0;
}
#ifdef CONFIG_DPP2
static void wpas_dpp_build_csr(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct dpp_authentication *auth = wpa_s->dpp_auth;
if (!auth || !auth->csrattrs)
return;
wpa_printf(MSG_DEBUG, "DPP: Build CSR");
wpabuf_free(auth->csr);
/* TODO: Additional information needed for CSR based on csrAttrs */
auth->csr = dpp_build_csr(auth, wpa_s->conf->dpp_name ?
wpa_s->conf->dpp_name : "Test");
if (!auth->csr) {
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
return;
}
wpas_dpp_start_gas_client(wpa_s);
}
#endif /* CONFIG_DPP2 */
static void wpas_dpp_gas_resp_cb(void *ctx, const u8 *addr, u8 dialog_token,
enum gas_query_result result,
const struct wpabuf *adv_proto,
const struct wpabuf *resp, u16 status_code)
{
struct wpa_supplicant *wpa_s = ctx;
const u8 *pos;
struct dpp_authentication *auth = wpa_s->dpp_auth;
int res;
enum dpp_status_error status = DPP_STATUS_CONFIG_REJECTED;
unsigned int i;
wpa_s->dpp_gas_dialog_token = -1;
if (!auth || (!auth->auth_success && !auth->reconfig_success) ||
os_memcmp(addr, auth->peer_mac_addr, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "DPP: No matching exchange in progress");
return;
}
if (result != GAS_QUERY_SUCCESS ||
!resp || status_code != WLAN_STATUS_SUCCESS) {
wpa_printf(MSG_DEBUG, "DPP: GAS query did not succeed");
goto fail;
}
wpa_hexdump_buf(MSG_DEBUG, "DPP: Configuration Response adv_proto",
adv_proto);
wpa_hexdump_buf(MSG_DEBUG, "DPP: Configuration Response (GAS response)",
resp);
if (wpabuf_len(adv_proto) != 10 ||
!(pos = wpabuf_head(adv_proto)) ||
pos[0] != WLAN_EID_ADV_PROTO ||
pos[1] != 8 ||
pos[3] != WLAN_EID_VENDOR_SPECIFIC ||
pos[4] != 5 ||
WPA_GET_BE24(&pos[5]) != OUI_WFA ||
pos[8] != 0x1a ||
pos[9] != 1) {
wpa_printf(MSG_DEBUG,
"DPP: Not a DPP Advertisement Protocol ID");
goto fail;
}
res = dpp_conf_resp_rx(auth, resp);
#ifdef CONFIG_DPP2
if (res == -2) {
wpa_printf(MSG_DEBUG, "DPP: CSR needed");
eloop_register_timeout(0, 0, wpas_dpp_build_csr, wpa_s, NULL);
return;
}
#endif /* CONFIG_DPP2 */
if (res < 0) {
wpa_printf(MSG_DEBUG, "DPP: Configuration attempt failed");
goto fail;
}
wpa_s->dpp_conf_backup_received = false;
for (i = 0; i < auth->num_conf_obj; i++) {
res = wpas_dpp_handle_config_obj(wpa_s, auth,
&auth->conf_obj[i]);
if (res < 0)
goto fail;
}
if (auth->num_conf_obj)
wpas_dpp_post_process_config(wpa_s, auth);
if (wpas_dpp_handle_key_pkg(wpa_s, auth->conf_key_pkg) < 0)
goto fail;
status = DPP_STATUS_OK;
#ifdef CONFIG_TESTING_OPTIONS
if (dpp_test == DPP_TEST_REJECT_CONFIG) {
wpa_printf(MSG_INFO, "DPP: TESTING - Reject Config Object");
status = DPP_STATUS_CONFIG_REJECTED;
}
#endif /* CONFIG_TESTING_OPTIONS */
fail:
if (status != DPP_STATUS_OK)
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_FAILED);
#ifdef CONFIG_DPP2
if (auth->peer_version >= 2 &&
auth->conf_resp_status == DPP_STATUS_OK) {
struct wpabuf *msg;
wpa_printf(MSG_DEBUG, "DPP: Send DPP Configuration Result");
msg = dpp_build_conf_result(auth, status);
if (!msg)
goto fail2;
wpa_msg(wpa_s, MSG_INFO,
DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(addr), auth->curr_freq,
DPP_PA_CONFIGURATION_RESULT);
offchannel_send_action(wpa_s, auth->curr_freq,
addr, wpa_s->own_addr, broadcast,
wpabuf_head(msg),
wpabuf_len(msg),
500, wpas_dpp_tx_status, 0);
wpabuf_free(msg);
/* This exchange will be terminated in the TX status handler */
if (wpa_s->conf->dpp_config_processing < 2 ||
wpa_s->dpp_conf_backup_received)
auth->remove_on_tx_status = 1;
return;
}
fail2:
#endif /* CONFIG_DPP2 */
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
}
static void wpas_dpp_start_gas_client(struct wpa_supplicant *wpa_s)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
struct wpabuf *buf;
int res;
int *supp_op_classes;
wpa_s->dpp_gas_client = 1;
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_stop(wpa_s);
supp_op_classes = wpas_supp_op_classes(wpa_s);
buf = dpp_build_conf_req_helper(auth, wpa_s->conf->dpp_name,
wpa_s->dpp_netrole,
wpa_s->conf->dpp_mud_url,
supp_op_classes);
os_free(supp_op_classes);
if (!buf) {
wpa_printf(MSG_DEBUG,
"DPP: No configuration request data available");
return;
}
wpa_printf(MSG_DEBUG, "DPP: GAS request to " MACSTR " (freq %u MHz)",
MAC2STR(auth->peer_mac_addr), auth->curr_freq);
res = gas_query_req(wpa_s->gas, auth->peer_mac_addr, auth->curr_freq,
1, 1, buf, wpas_dpp_gas_resp_cb, wpa_s);
if (res < 0) {
wpa_msg(wpa_s, MSG_DEBUG, "GAS: Failed to send Query Request");
wpabuf_free(buf);
} else {
wpa_printf(MSG_DEBUG,
"DPP: GAS query started with dialog token %u", res);
wpa_s->dpp_gas_dialog_token = res;
}
}
static void wpas_dpp_auth_success(struct wpa_supplicant *wpa_s, int initiator)
{
wpa_printf(MSG_DEBUG, "DPP: Authentication succeeded");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_AUTH_SUCCESS "init=%d", initiator);
#ifdef CONFIG_TESTING_OPTIONS
if (dpp_test == DPP_TEST_STOP_AT_AUTH_CONF) {
wpa_printf(MSG_INFO,
"DPP: TESTING - stop at Authentication Confirm");
if (wpa_s->dpp_auth->configurator) {
/* Prevent GAS response */
wpa_s->dpp_auth->auth_success = 0;
}
return;
}
#endif /* CONFIG_TESTING_OPTIONS */
if (wpa_s->dpp_auth->configurator)
wpas_dpp_start_gas_server(wpa_s);
else
wpas_dpp_start_gas_client(wpa_s);
}
static void wpas_dpp_rx_auth_resp(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
struct wpabuf *msg;
wpa_printf(MSG_DEBUG, "DPP: Authentication Response from " MACSTR
" (freq %u MHz)", MAC2STR(src), freq);
if (!auth) {
wpa_printf(MSG_DEBUG,
"DPP: No DPP Authentication in progress - drop");
return;
}
if (!is_zero_ether_addr(auth->peer_mac_addr) &&
os_memcmp(src, auth->peer_mac_addr, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "DPP: MAC address mismatch (expected "
MACSTR ") - drop", MAC2STR(auth->peer_mac_addr));
return;
}
eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
if (auth->curr_freq != freq && auth->neg_freq == freq) {
wpa_printf(MSG_DEBUG,
"DPP: Responder accepted request for different negotiation channel");
auth->curr_freq = freq;
}
eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
msg = dpp_auth_resp_rx(auth, hdr, buf, len);
if (!msg) {
if (auth->auth_resp_status == DPP_STATUS_RESPONSE_PENDING) {
wpa_printf(MSG_DEBUG,
"DPP: Start wait for full response");
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_start(wpa_s, auth->curr_freq);
return;
}
wpa_printf(MSG_DEBUG, "DPP: No confirm generated");
return;
}
os_memcpy(auth->peer_mac_addr, src, ETH_ALEN);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(src), auth->curr_freq, DPP_PA_AUTHENTICATION_CONF);
offchannel_send_action(wpa_s, auth->curr_freq,
src, wpa_s->own_addr, broadcast,
wpabuf_head(msg), wpabuf_len(msg),
500, wpas_dpp_tx_status, 0);
wpabuf_free(msg);
wpa_s->dpp_auth_ok_on_ack = 1;
}
static void wpas_dpp_rx_auth_conf(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
wpa_printf(MSG_DEBUG, "DPP: Authentication Confirmation from " MACSTR,
MAC2STR(src));
if (!auth) {
wpa_printf(MSG_DEBUG,
"DPP: No DPP Authentication in progress - drop");
return;
}
if (os_memcmp(src, auth->peer_mac_addr, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "DPP: MAC address mismatch (expected "
MACSTR ") - drop", MAC2STR(auth->peer_mac_addr));
return;
}
if (dpp_auth_conf_rx(auth, hdr, buf, len) < 0) {
wpa_printf(MSG_DEBUG, "DPP: Authentication failed");
return;
}
wpas_dpp_auth_success(wpa_s, 0);
}
#ifdef CONFIG_DPP2
static void wpas_dpp_config_result_wait_timeout(void *eloop_ctx,
void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct dpp_authentication *auth = wpa_s->dpp_auth;
if (!auth || !auth->waiting_conf_result)
return;
wpa_printf(MSG_DEBUG,
"DPP: Timeout while waiting for Configuration Result");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_FAILED);
dpp_auth_deinit(auth);
wpa_s->dpp_auth = NULL;
}
static void wpas_dpp_conn_status_result_wait_timeout(void *eloop_ctx,
void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct dpp_authentication *auth = wpa_s->dpp_auth;
if (!auth || !auth->waiting_conn_status_result)
return;
wpa_printf(MSG_DEBUG,
"DPP: Timeout while waiting for Connection Status Result");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONN_STATUS_RESULT "timeout");
wpas_dpp_listen_stop(wpa_s);
dpp_auth_deinit(auth);
wpa_s->dpp_auth = NULL;
}
static void wpas_dpp_rx_conf_result(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
enum dpp_status_error status;
wpa_printf(MSG_DEBUG, "DPP: Configuration Result from " MACSTR,
MAC2STR(src));
if (!auth || !auth->waiting_conf_result) {
wpa_printf(MSG_DEBUG,
"DPP: No DPP Configuration waiting for result - drop");
return;
}
if (os_memcmp(src, auth->peer_mac_addr, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "DPP: MAC address mismatch (expected "
MACSTR ") - drop", MAC2STR(auth->peer_mac_addr));
return;
}
status = dpp_conf_result_rx(auth, hdr, buf, len);
if (status == DPP_STATUS_OK && auth->send_conn_status) {
wpa_msg(wpa_s, MSG_INFO,
DPP_EVENT_CONF_SENT "wait_conn_status=1");
wpa_printf(MSG_DEBUG, "DPP: Wait for Connection Status Result");
eloop_cancel_timeout(wpas_dpp_config_result_wait_timeout,
wpa_s, NULL);
auth->waiting_conn_status_result = 1;
eloop_cancel_timeout(wpas_dpp_conn_status_result_wait_timeout,
wpa_s, NULL);
eloop_register_timeout(16, 0,
wpas_dpp_conn_status_result_wait_timeout,
wpa_s, NULL);
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_start(wpa_s, auth->neg_freq ? auth->neg_freq :
auth->curr_freq);
return;
}
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_stop(wpa_s);
if (status == DPP_STATUS_OK)
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_SENT);
else
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_FAILED);
dpp_auth_deinit(auth);
wpa_s->dpp_auth = NULL;
eloop_cancel_timeout(wpas_dpp_config_result_wait_timeout, wpa_s, NULL);
}
static void wpas_dpp_rx_conn_status_result(struct wpa_supplicant *wpa_s,
const u8 *src, const u8 *hdr,
const u8 *buf, size_t len)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
enum dpp_status_error status;
u8 ssid[SSID_MAX_LEN];
size_t ssid_len = 0;
char *channel_list = NULL;
wpa_printf(MSG_DEBUG, "DPP: Connection Status Result");
if (!auth || !auth->waiting_conn_status_result) {
wpa_printf(MSG_DEBUG,
"DPP: No DPP Configuration waiting for connection status result - drop");
return;
}
status = dpp_conn_status_result_rx(auth, hdr, buf, len,
ssid, &ssid_len, &channel_list);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONN_STATUS_RESULT
"result=%d ssid=%s channel_list=%s",
status, wpa_ssid_txt(ssid, ssid_len),
channel_list ? channel_list : "N/A");
os_free(channel_list);
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_stop(wpa_s);
dpp_auth_deinit(auth);
wpa_s->dpp_auth = NULL;
eloop_cancel_timeout(wpas_dpp_conn_status_result_wait_timeout,
wpa_s, NULL);
}
static int wpas_dpp_process_conf_obj(void *ctx,
struct dpp_authentication *auth)
{
struct wpa_supplicant *wpa_s = ctx;
unsigned int i;
int res = -1;
for (i = 0; i < auth->num_conf_obj; i++) {
res = wpas_dpp_handle_config_obj(wpa_s, auth,
&auth->conf_obj[i]);
if (res)
break;
}
if (!res)
wpas_dpp_post_process_config(wpa_s, auth);
return res;
}
static void wpas_dpp_remove_bi(void *ctx, struct dpp_bootstrap_info *bi)
{
struct wpa_supplicant *wpa_s = ctx;
if (bi == wpa_s->dpp_chirp_bi)
wpas_dpp_chirp_stop(wpa_s);
}
static void
wpas_dpp_rx_presence_announcement(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
const u8 *r_bootstrap;
u16 r_bootstrap_len;
struct dpp_bootstrap_info *peer_bi;
struct dpp_authentication *auth;
if (!wpa_s->dpp)
return;
if (wpa_s->dpp_auth) {
wpa_printf(MSG_DEBUG,
"DPP: Ignore Presence Announcement during ongoing Authentication");
return;
}
wpa_printf(MSG_DEBUG, "DPP: Presence Announcement from " MACSTR,
MAC2STR(src));
r_bootstrap = dpp_get_attr(buf, len, DPP_ATTR_R_BOOTSTRAP_KEY_HASH,
&r_bootstrap_len);
if (!r_bootstrap || r_bootstrap_len != SHA256_MAC_LEN) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
"Missing or invalid required Responder Bootstrapping Key Hash attribute");
return;
}
wpa_hexdump(MSG_MSGDUMP, "DPP: Responder Bootstrapping Key Hash",
r_bootstrap, r_bootstrap_len);
peer_bi = dpp_bootstrap_find_chirp(wpa_s->dpp, r_bootstrap);
if (!peer_bi) {
wpa_printf(MSG_DEBUG,
"DPP: No matching bootstrapping information found");
return;
}
auth = dpp_auth_init(wpa_s->dpp, wpa_s, peer_bi, NULL,
DPP_CAPAB_CONFIGURATOR, freq, NULL, 0);
if (!auth)
return;
wpas_dpp_set_testing_options(wpa_s, auth);
if (dpp_set_configurator(auth, wpa_s->dpp_configurator_params) < 0) {
dpp_auth_deinit(auth);
return;
}
auth->neg_freq = freq;
if (!is_zero_ether_addr(peer_bi->mac_addr))
os_memcpy(auth->peer_mac_addr, peer_bi->mac_addr, ETH_ALEN);
wpa_s->dpp_auth = auth;
if (wpas_dpp_auth_init_next(wpa_s) < 0) {
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
}
}
static void wpas_dpp_reconfig_reply_wait_timeout(void *eloop_ctx,
void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct dpp_authentication *auth = wpa_s->dpp_auth;
if (!auth)
return;
wpa_printf(MSG_DEBUG, "DPP: Reconfig Reply wait timeout");
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_stop(wpa_s);
dpp_auth_deinit(auth);
wpa_s->dpp_auth = NULL;
}
static void
wpas_dpp_rx_reconfig_announcement(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
const u8 *csign_hash;
u16 csign_hash_len;
struct dpp_configurator *conf;
struct dpp_authentication *auth;
unsigned int wait_time, max_wait_time;
if (!wpa_s->dpp)
return;
if (wpa_s->dpp_auth) {
wpa_printf(MSG_DEBUG,
"DPP: Ignore Reconfig Announcement during ongoing Authentication");
return;
}
wpa_printf(MSG_DEBUG, "DPP: Reconfig Announcement from " MACSTR,
MAC2STR(src));
csign_hash = dpp_get_attr(buf, len, DPP_ATTR_C_SIGN_KEY_HASH,
&csign_hash_len);
if (!csign_hash || csign_hash_len != SHA256_MAC_LEN) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
"Missing or invalid required Configurator C-sign key Hash attribute");
return;
}
wpa_hexdump(MSG_MSGDUMP, "DPP: Configurator C-sign key Hash (kid)",
csign_hash, csign_hash_len);
conf = dpp_configurator_find_kid(wpa_s->dpp, csign_hash);
if (!conf) {
wpa_printf(MSG_DEBUG,
"DPP: No matching Configurator information found");
return;
}
auth = dpp_reconfig_init(wpa_s->dpp, wpa_s, conf, freq);
if (!auth)
return;
wpas_dpp_set_testing_options(wpa_s, auth);
if (dpp_set_configurator(auth, wpa_s->dpp_configurator_params) < 0) {
dpp_auth_deinit(auth);
return;
}
os_memcpy(auth->peer_mac_addr, src, ETH_ALEN);
wpa_s->dpp_auth = auth;
wpa_s->dpp_in_response_listen = 0;
wpa_s->dpp_auth_ok_on_ack = 0;
wait_time = wpa_s->max_remain_on_chan;
max_wait_time = wpa_s->dpp_resp_wait_time ?
wpa_s->dpp_resp_wait_time : 2000;
if (wait_time > max_wait_time)
wait_time = max_wait_time;
wait_time += 10; /* give the driver some extra time to complete */
eloop_register_timeout(wait_time / 1000, (wait_time % 1000) * 1000,
wpas_dpp_reconfig_reply_wait_timeout,
wpa_s, NULL);
wait_time -= 10;
wpas_dpp_stop_listen_for_tx(wpa_s, freq, wait_time);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(src), freq, DPP_PA_RECONFIG_AUTH_REQ);
if (offchannel_send_action(wpa_s, freq, src, wpa_s->own_addr, broadcast,
wpabuf_head(auth->reconfig_req_msg),
wpabuf_len(auth->reconfig_req_msg),
wait_time, wpas_dpp_tx_status, 0) < 0) {
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
}
}
static void
wpas_dpp_rx_reconfig_auth_req(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
struct wpa_ssid *ssid;
struct dpp_authentication *auth;
wpa_printf(MSG_DEBUG, "DPP: Reconfig Authentication Request from "
MACSTR, MAC2STR(src));
if (!wpa_s->dpp)
return;
if (wpa_s->dpp_auth) {
wpa_printf(MSG_DEBUG,
"DPP: Not ready for reconfiguration - pending authentication exchange in progress");
return;
}
if (!wpa_s->dpp_reconfig_announcement || !wpa_s->dpp_reconfig_ssid) {
wpa_printf(MSG_DEBUG,
"DPP: Not ready for reconfiguration - not requested");
return;
}
for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
if (ssid == wpa_s->dpp_reconfig_ssid &&
ssid->id == wpa_s->dpp_reconfig_ssid_id)
break;
}
if (!ssid || !ssid->dpp_connector || !ssid->dpp_netaccesskey ||
!ssid->dpp_csign) {
wpa_printf(MSG_DEBUG,
"DPP: Not ready for reconfiguration - no matching network profile with Connector found");
return;
}
auth = dpp_reconfig_auth_req_rx(wpa_s->dpp, wpa_s, ssid->dpp_connector,
ssid->dpp_netaccesskey,
ssid->dpp_netaccesskey_len,
ssid->dpp_csign, ssid->dpp_csign_len,
freq, hdr, buf, len);
if (!auth)
return;
os_memcpy(auth->peer_mac_addr, src, ETH_ALEN);
wpa_s->dpp_auth = auth;
wpas_dpp_chirp_stop(wpa_s);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(src), freq, DPP_PA_RECONFIG_AUTH_RESP);
if (offchannel_send_action(wpa_s, freq, src, wpa_s->own_addr, broadcast,
wpabuf_head(auth->reconfig_resp_msg),
wpabuf_len(auth->reconfig_resp_msg),
500, wpas_dpp_tx_status, 0) < 0) {
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
}
}
static void
wpas_dpp_rx_reconfig_auth_resp(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
struct wpabuf *conf;
wpa_printf(MSG_DEBUG, "DPP: Reconfig Authentication Response from "
MACSTR, MAC2STR(src));
if (!auth || !auth->reconfig || !auth->configurator) {
wpa_printf(MSG_DEBUG,
"DPP: No DPP Reconfig Authentication in progress - drop");
return;
}
if (os_memcmp(src, auth->peer_mac_addr, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "DPP: MAC address mismatch (expected "
MACSTR ") - drop", MAC2STR(auth->peer_mac_addr));
return;
}
conf = dpp_reconfig_auth_resp_rx(auth, hdr, buf, len);
if (!conf)
return;
eloop_cancel_timeout(wpas_dpp_reconfig_reply_wait_timeout, wpa_s, NULL);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(src), freq, DPP_PA_RECONFIG_AUTH_CONF);
if (offchannel_send_action(wpa_s, freq, src, wpa_s->own_addr, broadcast,
wpabuf_head(conf), wpabuf_len(conf),
500, wpas_dpp_tx_status, 0) < 0) {
wpabuf_free(conf);
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
return;
}
wpabuf_free(conf);
wpas_dpp_start_gas_server(wpa_s);
}
static void
wpas_dpp_rx_reconfig_auth_conf(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
struct dpp_authentication *auth = wpa_s->dpp_auth;
wpa_printf(MSG_DEBUG, "DPP: Reconfig Authentication Confirm from "
MACSTR, MAC2STR(src));
if (!auth || !auth->reconfig || auth->configurator) {
wpa_printf(MSG_DEBUG,
"DPP: No DPP Reconfig Authentication in progress - drop");
return;
}
if (os_memcmp(src, auth->peer_mac_addr, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "DPP: MAC address mismatch (expected "
MACSTR ") - drop", MAC2STR(auth->peer_mac_addr));
return;
}
if (dpp_reconfig_auth_conf_rx(auth, hdr, buf, len) < 0)
return;
wpas_dpp_start_gas_client(wpa_s);
}
#endif /* CONFIG_DPP2 */
static void wpas_dpp_rx_peer_disc_resp(struct wpa_supplicant *wpa_s,
const u8 *src,
const u8 *buf, size_t len)
{
struct wpa_ssid *ssid;
const u8 *connector, *trans_id, *status;
u16 connector_len, trans_id_len, status_len;
#ifdef CONFIG_DPP2
const u8 *version;
u16 version_len;
#endif /* CONFIG_DPP2 */
u8 peer_version = 1;
struct dpp_introduction intro;
struct rsn_pmksa_cache_entry *entry;
struct os_time now;
struct os_reltime rnow;
os_time_t expiry;
unsigned int seconds;
enum dpp_status_error res;
wpa_printf(MSG_DEBUG, "DPP: Peer Discovery Response from " MACSTR,
MAC2STR(src));
if (is_zero_ether_addr(wpa_s->dpp_intro_bssid) ||
os_memcmp(src, wpa_s->dpp_intro_bssid, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "DPP: Not waiting for response from "
MACSTR " - drop", MAC2STR(src));
return;
}
offchannel_send_action_done(wpa_s);
for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
if (ssid == wpa_s->dpp_intro_network)
break;
}
if (!ssid || !ssid->dpp_connector || !ssid->dpp_netaccesskey ||
!ssid->dpp_csign) {
wpa_printf(MSG_DEBUG,
"DPP: Profile not found for network introduction");
return;
}
trans_id = dpp_get_attr(buf, len, DPP_ATTR_TRANSACTION_ID,
&trans_id_len);
if (!trans_id || trans_id_len != 1) {
wpa_printf(MSG_DEBUG,
"DPP: Peer did not include Transaction ID");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
" fail=missing_transaction_id", MAC2STR(src));
goto fail;
}
if (trans_id[0] != TRANSACTION_ID) {
wpa_printf(MSG_DEBUG,
"DPP: Ignore frame with unexpected Transaction ID %u",
trans_id[0]);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
" fail=transaction_id_mismatch", MAC2STR(src));
goto fail;
}
status = dpp_get_attr(buf, len, DPP_ATTR_STATUS, &status_len);
if (!status || status_len != 1) {
wpa_printf(MSG_DEBUG, "DPP: Peer did not include Status");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
" fail=missing_status", MAC2STR(src));
goto fail;
}
if (status[0] != DPP_STATUS_OK) {
wpa_printf(MSG_DEBUG,
"DPP: Peer rejected network introduction: Status %u",
status[0]);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
" status=%u", MAC2STR(src), status[0]);
#ifdef CONFIG_DPP2
wpas_dpp_send_conn_status_result(wpa_s, status[0]);
#endif /* CONFIG_DPP2 */
goto fail;
}
connector = dpp_get_attr(buf, len, DPP_ATTR_CONNECTOR, &connector_len);
if (!connector) {
wpa_printf(MSG_DEBUG,
"DPP: Peer did not include its Connector");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
" fail=missing_connector", MAC2STR(src));
goto fail;
}
res = dpp_peer_intro(&intro, ssid->dpp_connector,
ssid->dpp_netaccesskey,
ssid->dpp_netaccesskey_len,
ssid->dpp_csign,
ssid->dpp_csign_len,
connector, connector_len, &expiry);
if (res != DPP_STATUS_OK) {
wpa_printf(MSG_INFO,
"DPP: Network Introduction protocol resulted in failure");
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
" fail=peer_connector_validation_failed", MAC2STR(src));
#ifdef CONFIG_DPP2
wpas_dpp_send_conn_status_result(wpa_s, res);
#endif /* CONFIG_DPP2 */
goto fail;
}
entry = os_zalloc(sizeof(*entry));
if (!entry)
goto fail;
os_memcpy(entry->aa, src, ETH_ALEN);
os_memcpy(entry->pmkid, intro.pmkid, PMKID_LEN);
os_memcpy(entry->pmk, intro.pmk, intro.pmk_len);
entry->pmk_len = intro.pmk_len;
entry->akmp = WPA_KEY_MGMT_DPP;
#ifdef CONFIG_DPP2
version = dpp_get_attr(buf, len, DPP_ATTR_PROTOCOL_VERSION,
&version_len);
if (version && version_len >= 1)
peer_version = version[0];
entry->dpp_pfs = peer_version >= 2;
#endif /* CONFIG_DPP2 */
if (expiry) {
os_get_time(&now);
seconds = expiry - now.sec;
} else {
seconds = 86400 * 7;
}
os_get_reltime(&rnow);
entry->expiration = rnow.sec + seconds;
entry->reauth_time = rnow.sec + seconds;
entry->network_ctx = ssid;
wpa_sm_pmksa_cache_add_entry(wpa_s->wpa, entry);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_INTRO "peer=" MACSTR
" status=%u version=%u", MAC2STR(src), status[0], peer_version);
wpa_printf(MSG_DEBUG,
"DPP: Try connection again after successful network introduction");
if (wpa_supplicant_fast_associate(wpa_s) != 1) {
wpa_supplicant_cancel_sched_scan(wpa_s);
wpa_supplicant_req_scan(wpa_s, 0, 0);
}
fail:
os_memset(&intro, 0, sizeof(intro));
}
static int wpas_dpp_allow_ir(struct wpa_supplicant *wpa_s, unsigned int freq)
{
int i, j;
if (!wpa_s->hw.modes)
return -1;
for (i = 0; i < wpa_s->hw.num_modes; i++) {
struct hostapd_hw_modes *mode = &wpa_s->hw.modes[i];
for (j = 0; j < mode->num_channels; j++) {
struct hostapd_channel_data *chan = &mode->channels[j];
if (chan->freq != (int) freq)
continue;
if (chan->flag & (HOSTAPD_CHAN_DISABLED |
HOSTAPD_CHAN_NO_IR |
HOSTAPD_CHAN_RADAR))
continue;
return 1;
}
}
wpa_printf(MSG_DEBUG,
"DPP: Frequency %u MHz not supported or does not allow PKEX initiation in the current channel list",
freq);
return 0;
}
static int wpas_dpp_pkex_next_channel(struct wpa_supplicant *wpa_s,
struct dpp_pkex *pkex)
{
if (pkex->freq == 2437)
pkex->freq = 5745;
else if (pkex->freq == 5745)
pkex->freq = 5220;
else if (pkex->freq == 5220)
pkex->freq = 60480;
else
return -1; /* no more channels to try */
if (wpas_dpp_allow_ir(wpa_s, pkex->freq) == 1) {
wpa_printf(MSG_DEBUG, "DPP: Try to initiate on %u MHz",
pkex->freq);
return 0;
}
/* Could not use this channel - try the next one */
return wpas_dpp_pkex_next_channel(wpa_s, pkex);
}
static void wpas_dpp_pkex_retry_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct dpp_pkex *pkex = wpa_s->dpp_pkex;
if (!pkex || !pkex->exchange_req)
return;
if (pkex->exch_req_tries >= 5) {
if (wpas_dpp_pkex_next_channel(wpa_s, pkex) < 0) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_FAIL
"No response from PKEX peer");
dpp_pkex_free(pkex);
wpa_s->dpp_pkex = NULL;
return;
}
pkex->exch_req_tries = 0;
}
pkex->exch_req_tries++;
wpa_printf(MSG_DEBUG, "DPP: Retransmit PKEX Exchange Request (try %u)",
pkex->exch_req_tries);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(broadcast), pkex->freq, DPP_PA_PKEX_EXCHANGE_REQ);
offchannel_send_action(wpa_s, pkex->freq, broadcast,
wpa_s->own_addr, broadcast,
wpabuf_head(pkex->exchange_req),
wpabuf_len(pkex->exchange_req),
pkex->exch_req_wait_time,
wpas_dpp_tx_pkex_status, 0);
}
static void
wpas_dpp_tx_pkex_status(struct wpa_supplicant *wpa_s,
unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid,
const u8 *data, size_t data_len,
enum offchannel_send_action_result result)
{
const char *res_txt;
struct dpp_pkex *pkex = wpa_s->dpp_pkex;
res_txt = result == OFFCHANNEL_SEND_ACTION_SUCCESS ? "SUCCESS" :
(result == OFFCHANNEL_SEND_ACTION_NO_ACK ? "no-ACK" :
"FAILED");
wpa_printf(MSG_DEBUG, "DPP: TX status: freq=%u dst=" MACSTR
" result=%s (PKEX)",
freq, MAC2STR(dst), res_txt);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX_STATUS "dst=" MACSTR
" freq=%u result=%s", MAC2STR(dst), freq, res_txt);
if (!pkex) {
wpa_printf(MSG_DEBUG,
"DPP: Ignore TX status since there is no ongoing PKEX exchange");
return;
}
if (pkex->failed) {
wpa_printf(MSG_DEBUG,
"DPP: Terminate PKEX exchange due to an earlier error");
if (pkex->t > pkex->own_bi->pkex_t)
pkex->own_bi->pkex_t = pkex->t;
dpp_pkex_free(pkex);
wpa_s->dpp_pkex = NULL;
return;
}
if (pkex->exch_req_wait_time && pkex->exchange_req) {
/* Wait for PKEX Exchange Response frame and retry request if
* no response is seen. */
eloop_cancel_timeout(wpas_dpp_pkex_retry_timeout, wpa_s, NULL);
eloop_register_timeout(pkex->exch_req_wait_time / 1000,
(pkex->exch_req_wait_time % 1000) * 1000,
wpas_dpp_pkex_retry_timeout, wpa_s,
NULL);
}
}
static void
wpas_dpp_rx_pkex_exchange_req(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *buf, size_t len, unsigned int freq)
{
struct wpabuf *msg;
unsigned int wait_time;
wpa_printf(MSG_DEBUG, "DPP: PKEX Exchange Request from " MACSTR,
MAC2STR(src));
/* TODO: Support multiple PKEX codes by iterating over all the enabled
* values here */
if (!wpa_s->dpp_pkex_code || !wpa_s->dpp_pkex_bi) {
wpa_printf(MSG_DEBUG,
"DPP: No PKEX code configured - ignore request");
return;
}
if (wpa_s->dpp_pkex) {
/* TODO: Support parallel operations */
wpa_printf(MSG_DEBUG,
"DPP: Already in PKEX session - ignore new request");
return;
}
wpa_s->dpp_pkex = dpp_pkex_rx_exchange_req(wpa_s, wpa_s->dpp_pkex_bi,
wpa_s->own_addr, src,
wpa_s->dpp_pkex_identifier,
wpa_s->dpp_pkex_code,
buf, len);
if (!wpa_s->dpp_pkex) {
wpa_printf(MSG_DEBUG,
"DPP: Failed to process the request - ignore it");
return;
}
msg = wpa_s->dpp_pkex->exchange_resp;
wait_time = wpa_s->max_remain_on_chan;
if (wait_time > 2000)
wait_time = 2000;
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(src), freq, DPP_PA_PKEX_EXCHANGE_RESP);
offchannel_send_action(wpa_s, freq, src, wpa_s->own_addr,
broadcast,
wpabuf_head(msg), wpabuf_len(msg),
wait_time, wpas_dpp_tx_pkex_status, 0);
}
static void
wpas_dpp_rx_pkex_exchange_resp(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *buf, size_t len, unsigned int freq)
{
struct wpabuf *msg;
unsigned int wait_time;
wpa_printf(MSG_DEBUG, "DPP: PKEX Exchange Response from " MACSTR,
MAC2STR(src));
/* TODO: Support multiple PKEX codes by iterating over all the enabled
* values here */
if (!wpa_s->dpp_pkex || !wpa_s->dpp_pkex->initiator ||
wpa_s->dpp_pkex->exchange_done) {
wpa_printf(MSG_DEBUG, "DPP: No matching PKEX session");
return;
}
eloop_cancel_timeout(wpas_dpp_pkex_retry_timeout, wpa_s, NULL);
wpa_s->dpp_pkex->exch_req_wait_time = 0;
msg = dpp_pkex_rx_exchange_resp(wpa_s->dpp_pkex, src, buf, len);
if (!msg) {
wpa_printf(MSG_DEBUG, "DPP: Failed to process the response");
return;
}
wpa_printf(MSG_DEBUG, "DPP: Send PKEX Commit-Reveal Request to " MACSTR,
MAC2STR(src));
wait_time = wpa_s->max_remain_on_chan;
if (wait_time > 2000)
wait_time = 2000;
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(src), freq, DPP_PA_PKEX_COMMIT_REVEAL_REQ);
offchannel_send_action(wpa_s, freq, src, wpa_s->own_addr,
broadcast,
wpabuf_head(msg), wpabuf_len(msg),
wait_time, wpas_dpp_tx_pkex_status, 0);
wpabuf_free(msg);
}
static struct dpp_bootstrap_info *
wpas_dpp_pkex_finish(struct wpa_supplicant *wpa_s, const u8 *peer,
unsigned int freq)
{
struct dpp_bootstrap_info *bi;
bi = dpp_pkex_finish(wpa_s->dpp, wpa_s->dpp_pkex, peer, freq);
if (!bi)
return NULL;
wpa_s->dpp_pkex = NULL;
return bi;
}
static void
wpas_dpp_rx_pkex_commit_reveal_req(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
struct wpabuf *msg;
unsigned int wait_time;
struct dpp_pkex *pkex = wpa_s->dpp_pkex;
wpa_printf(MSG_DEBUG, "DPP: PKEX Commit-Reveal Request from " MACSTR,
MAC2STR(src));
if (!pkex || pkex->initiator || !pkex->exchange_done) {
wpa_printf(MSG_DEBUG, "DPP: No matching PKEX session");
return;
}
msg = dpp_pkex_rx_commit_reveal_req(pkex, hdr, buf, len);
if (!msg) {
wpa_printf(MSG_DEBUG, "DPP: Failed to process the request");
if (pkex->failed) {
wpa_printf(MSG_DEBUG, "DPP: Terminate PKEX exchange");
if (pkex->t > pkex->own_bi->pkex_t)
pkex->own_bi->pkex_t = pkex->t;
dpp_pkex_free(wpa_s->dpp_pkex);
wpa_s->dpp_pkex = NULL;
}
return;
}
wpa_printf(MSG_DEBUG, "DPP: Send PKEX Commit-Reveal Response to "
MACSTR, MAC2STR(src));
wait_time = wpa_s->max_remain_on_chan;
if (wait_time > 2000)
wait_time = 2000;
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(src), freq, DPP_PA_PKEX_COMMIT_REVEAL_RESP);
offchannel_send_action(wpa_s, freq, src, wpa_s->own_addr,
broadcast,
wpabuf_head(msg), wpabuf_len(msg),
wait_time, wpas_dpp_tx_pkex_status, 0);
wpabuf_free(msg);
wpas_dpp_pkex_finish(wpa_s, src, freq);
}
static void
wpas_dpp_rx_pkex_commit_reveal_resp(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *hdr, const u8 *buf, size_t len,
unsigned int freq)
{
int res;
struct dpp_bootstrap_info *bi;
struct dpp_pkex *pkex = wpa_s->dpp_pkex;
char cmd[500];
wpa_printf(MSG_DEBUG, "DPP: PKEX Commit-Reveal Response from " MACSTR,
MAC2STR(src));
if (!pkex || !pkex->initiator || !pkex->exchange_done) {
wpa_printf(MSG_DEBUG, "DPP: No matching PKEX session");
return;
}
res = dpp_pkex_rx_commit_reveal_resp(pkex, hdr, buf, len);
if (res < 0) {
wpa_printf(MSG_DEBUG, "DPP: Failed to process the response");
return;
}
bi = wpas_dpp_pkex_finish(wpa_s, src, freq);
if (!bi)
return;
os_snprintf(cmd, sizeof(cmd), " peer=%u %s",
bi->id,
wpa_s->dpp_pkex_auth_cmd ? wpa_s->dpp_pkex_auth_cmd : "");
wpa_printf(MSG_DEBUG,
"DPP: Start authentication after PKEX with parameters: %s",
cmd);
if (wpas_dpp_auth_init(wpa_s, cmd) < 0) {
wpa_printf(MSG_DEBUG,
"DPP: Authentication initialization failed");
offchannel_send_action_done(wpa_s);
return;
}
}
void wpas_dpp_rx_action(struct wpa_supplicant *wpa_s, const u8 *src,
const u8 *buf, size_t len, unsigned int freq)
{
u8 crypto_suite;
enum dpp_public_action_frame_type type;
const u8 *hdr;
unsigned int pkex_t;
if (len < DPP_HDR_LEN)
return;
if (WPA_GET_BE24(buf) != OUI_WFA || buf[3] != DPP_OUI_TYPE)
return;
hdr = buf;
buf += 4;
len -= 4;
crypto_suite = *buf++;
type = *buf++;
len -= 2;
wpa_printf(MSG_DEBUG,
"DPP: Received DPP Public Action frame crypto suite %u type %d from "
MACSTR " freq=%u",
crypto_suite, type, MAC2STR(src), freq);
if (crypto_suite != 1) {
wpa_printf(MSG_DEBUG, "DPP: Unsupported crypto suite %u",
crypto_suite);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_RX "src=" MACSTR
" freq=%u type=%d ignore=unsupported-crypto-suite",
MAC2STR(src), freq, type);
return;
}
wpa_hexdump(MSG_MSGDUMP, "DPP: Received message attributes", buf, len);
if (dpp_check_attrs(buf, len) < 0) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_RX "src=" MACSTR
" freq=%u type=%d ignore=invalid-attributes",
MAC2STR(src), freq, type);
return;
}
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_RX "src=" MACSTR " freq=%u type=%d",
MAC2STR(src), freq, type);
switch (type) {
case DPP_PA_AUTHENTICATION_REQ:
wpas_dpp_rx_auth_req(wpa_s, src, hdr, buf, len, freq);
break;
case DPP_PA_AUTHENTICATION_RESP:
wpas_dpp_rx_auth_resp(wpa_s, src, hdr, buf, len, freq);
break;
case DPP_PA_AUTHENTICATION_CONF:
wpas_dpp_rx_auth_conf(wpa_s, src, hdr, buf, len);
break;
case DPP_PA_PEER_DISCOVERY_RESP:
wpas_dpp_rx_peer_disc_resp(wpa_s, src, buf, len);
break;
case DPP_PA_PKEX_EXCHANGE_REQ:
wpas_dpp_rx_pkex_exchange_req(wpa_s, src, buf, len, freq);
break;
case DPP_PA_PKEX_EXCHANGE_RESP:
wpas_dpp_rx_pkex_exchange_resp(wpa_s, src, buf, len, freq);
break;
case DPP_PA_PKEX_COMMIT_REVEAL_REQ:
wpas_dpp_rx_pkex_commit_reveal_req(wpa_s, src, hdr, buf, len,
freq);
break;
case DPP_PA_PKEX_COMMIT_REVEAL_RESP:
wpas_dpp_rx_pkex_commit_reveal_resp(wpa_s, src, hdr, buf, len,
freq);
break;
#ifdef CONFIG_DPP2
case DPP_PA_CONFIGURATION_RESULT:
wpas_dpp_rx_conf_result(wpa_s, src, hdr, buf, len);
break;
case DPP_PA_CONNECTION_STATUS_RESULT:
wpas_dpp_rx_conn_status_result(wpa_s, src, hdr, buf, len);
break;
case DPP_PA_PRESENCE_ANNOUNCEMENT:
wpas_dpp_rx_presence_announcement(wpa_s, src, hdr, buf, len,
freq);
break;
case DPP_PA_RECONFIG_ANNOUNCEMENT:
wpas_dpp_rx_reconfig_announcement(wpa_s, src, hdr, buf, len,
freq);
break;
case DPP_PA_RECONFIG_AUTH_REQ:
wpas_dpp_rx_reconfig_auth_req(wpa_s, src, hdr, buf, len, freq);
break;
case DPP_PA_RECONFIG_AUTH_RESP:
wpas_dpp_rx_reconfig_auth_resp(wpa_s, src, hdr, buf, len, freq);
break;
case DPP_PA_RECONFIG_AUTH_CONF:
wpas_dpp_rx_reconfig_auth_conf(wpa_s, src, hdr, buf, len, freq);
break;
#endif /* CONFIG_DPP2 */
default:
wpa_printf(MSG_DEBUG,
"DPP: Ignored unsupported frame subtype %d", type);
break;
}
if (wpa_s->dpp_pkex)
pkex_t = wpa_s->dpp_pkex->t;
else if (wpa_s->dpp_pkex_bi)
pkex_t = wpa_s->dpp_pkex_bi->pkex_t;
else
pkex_t = 0;
if (pkex_t >= PKEX_COUNTER_T_LIMIT) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_PKEX_T_LIMIT "id=0");
wpas_dpp_pkex_remove(wpa_s, "*");
}
}
static struct wpabuf *
wpas_dpp_gas_req_handler(void *ctx, void *resp_ctx, const u8 *sa,
const u8 *query, size_t query_len, u16 *comeback_delay)
{
struct wpa_supplicant *wpa_s = ctx;
struct dpp_authentication *auth = wpa_s->dpp_auth;
struct wpabuf *resp;
wpa_printf(MSG_DEBUG, "DPP: GAS request from " MACSTR,
MAC2STR(sa));
if (!auth || (!auth->auth_success && !auth->reconfig_success) ||
os_memcmp(sa, auth->peer_mac_addr, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "DPP: No matching exchange in progress");
return NULL;
}
if (wpa_s->dpp_auth_ok_on_ack && auth->configurator) {
wpa_printf(MSG_DEBUG,
"DPP: Have not received ACK for Auth Confirm yet - assume it was received based on this GAS request");
/* wpas_dpp_auth_success() would normally have been called from
* TX status handler, but since there was no such handler call
* yet, simply send out the event message and proceed with
* exchange. */
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_AUTH_SUCCESS "init=1");
wpa_s->dpp_auth_ok_on_ack = 0;
}
wpa_hexdump(MSG_DEBUG,
"DPP: Received Configuration Request (GAS Query Request)",
query, query_len);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_REQ_RX "src=" MACSTR,
MAC2STR(sa));
resp = dpp_conf_req_rx(auth, query, query_len);
#ifdef CONFIG_DPP2
if (!resp && auth->waiting_cert) {
wpa_printf(MSG_DEBUG, "DPP: Certificate not yet ready");
auth->cert_resp_ctx = resp_ctx;
*comeback_delay = 500;
return NULL;
}
#endif /* CONFIG_DPP2 */
if (!resp)
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_FAILED);
auth->conf_resp = resp;
return resp;
}
static void
wpas_dpp_gas_status_handler(void *ctx, struct wpabuf *resp, int ok)
{
struct wpa_supplicant *wpa_s = ctx;
struct dpp_authentication *auth = wpa_s->dpp_auth;
if (!auth) {
wpabuf_free(resp);
return;
}
if (auth->conf_resp != resp) {
wpa_printf(MSG_DEBUG,
"DPP: Ignore GAS status report (ok=%d) for unknown response",
ok);
wpabuf_free(resp);
return;
}
#ifdef CONFIG_DPP2
if (auth->waiting_csr && ok) {
wpa_printf(MSG_DEBUG, "DPP: Waiting for CSR");
wpabuf_free(resp);
return;
}
#endif /* CONFIG_DPP2 */
wpa_printf(MSG_DEBUG, "DPP: Configuration exchange completed (ok=%d)",
ok);
eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s, NULL);
#ifdef CONFIG_DPP2
if (ok && auth->peer_version >= 2 &&
auth->conf_resp_status == DPP_STATUS_OK) {
wpa_printf(MSG_DEBUG, "DPP: Wait for Configuration Result");
auth->waiting_conf_result = 1;
auth->conf_resp = NULL;
wpabuf_free(resp);
eloop_cancel_timeout(wpas_dpp_config_result_wait_timeout,
wpa_s, NULL);
eloop_register_timeout(2, 0,
wpas_dpp_config_result_wait_timeout,
wpa_s, NULL);
return;
}
#endif /* CONFIG_DPP2 */
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_stop(wpa_s);
if (ok)
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_SENT);
else
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CONF_FAILED);
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
wpabuf_free(resp);
}
int wpas_dpp_configurator_sign(struct wpa_supplicant *wpa_s, const char *cmd)
{
struct dpp_authentication *auth;
int ret = -1;
char *curve = NULL;
auth = dpp_alloc_auth(wpa_s->dpp, wpa_s);
if (!auth)
return -1;
curve = get_param(cmd, " curve=");
wpas_dpp_set_testing_options(wpa_s, auth);
if (dpp_set_configurator(auth, cmd) == 0 &&
dpp_configurator_own_config(auth, curve, 0) == 0)
ret = wpas_dpp_handle_config_obj(wpa_s, auth,
&auth->conf_obj[0]);
if (!ret)
wpas_dpp_post_process_config(wpa_s, auth);
dpp_auth_deinit(auth);
os_free(curve);
return ret;
}
static void
wpas_dpp_tx_introduction_status(struct wpa_supplicant *wpa_s,
unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid,
const u8 *data, size_t data_len,
enum offchannel_send_action_result result)
{
const char *res_txt;
res_txt = result == OFFCHANNEL_SEND_ACTION_SUCCESS ? "SUCCESS" :
(result == OFFCHANNEL_SEND_ACTION_NO_ACK ? "no-ACK" :
"FAILED");
wpa_printf(MSG_DEBUG, "DPP: TX status: freq=%u dst=" MACSTR
" result=%s (DPP Peer Discovery Request)",
freq, MAC2STR(dst), res_txt);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX_STATUS "dst=" MACSTR
" freq=%u result=%s", MAC2STR(dst), freq, res_txt);
/* TODO: Time out wait for response more quickly in error cases? */
}
int wpas_dpp_check_connect(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
struct wpa_bss *bss)
{
struct os_time now;
struct wpabuf *msg;
unsigned int wait_time;
const u8 *rsn;
struct wpa_ie_data ied;
size_t len;
if (!(ssid->key_mgmt & WPA_KEY_MGMT_DPP) || !bss)
return 0; /* Not using DPP AKM - continue */
rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
!(ied.key_mgmt & WPA_KEY_MGMT_DPP))
return 0; /* AP does not support DPP AKM - continue */
if (wpa_sm_pmksa_exists(wpa_s->wpa, bss->bssid, ssid))
return 0; /* PMKSA exists for DPP AKM - continue */
if (!ssid->dpp_connector || !ssid->dpp_netaccesskey ||
!ssid->dpp_csign) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_MISSING_CONNECTOR
"missing %s",
!ssid->dpp_connector ? "Connector" :
(!ssid->dpp_netaccesskey ? "netAccessKey" :
"C-sign-key"));
return -1;
}
os_get_time(&now);
if (ssid->dpp_netaccesskey_expiry &&
(os_time_t) ssid->dpp_netaccesskey_expiry < now.sec) {
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_MISSING_CONNECTOR
"netAccessKey expired");
return -1;
}
wpa_printf(MSG_DEBUG,
"DPP: Starting network introduction protocol to derive PMKSA for "
MACSTR, MAC2STR(bss->bssid));
len = 5 + 4 + os_strlen(ssid->dpp_connector);
#ifdef CONFIG_DPP2
len += 5;
#endif /* CONFIG_DPP2 */
msg = dpp_alloc_msg(DPP_PA_PEER_DISCOVERY_REQ, len);
if (!msg)
return -1;
#ifdef CONFIG_TESTING_OPTIONS
if (dpp_test == DPP_TEST_NO_TRANSACTION_ID_PEER_DISC_REQ) {
wpa_printf(MSG_INFO, "DPP: TESTING - no Transaction ID");
goto skip_trans_id;
}
if (dpp_test == DPP_TEST_INVALID_TRANSACTION_ID_PEER_DISC_REQ) {
wpa_printf(MSG_INFO, "DPP: TESTING - invalid Transaction ID");
wpabuf_put_le16(msg, DPP_ATTR_TRANSACTION_ID);
wpabuf_put_le16(msg, 0);
goto skip_trans_id;
}
#endif /* CONFIG_TESTING_OPTIONS */
/* Transaction ID */
wpabuf_put_le16(msg, DPP_ATTR_TRANSACTION_ID);
wpabuf_put_le16(msg, 1);
wpabuf_put_u8(msg, TRANSACTION_ID);
#ifdef CONFIG_TESTING_OPTIONS
skip_trans_id:
if (dpp_test == DPP_TEST_NO_CONNECTOR_PEER_DISC_REQ) {
wpa_printf(MSG_INFO, "DPP: TESTING - no Connector");
goto skip_connector;
}
if (dpp_test == DPP_TEST_INVALID_CONNECTOR_PEER_DISC_REQ) {
char *connector;
wpa_printf(MSG_INFO, "DPP: TESTING - invalid Connector");
connector = dpp_corrupt_connector_signature(
ssid->dpp_connector);
if (!connector) {
wpabuf_free(msg);
return -1;
}
wpabuf_put_le16(msg, DPP_ATTR_CONNECTOR);
wpabuf_put_le16(msg, os_strlen(connector));
wpabuf_put_str(msg, connector);
os_free(connector);
goto skip_connector;
}
#endif /* CONFIG_TESTING_OPTIONS */
/* DPP Connector */
wpabuf_put_le16(msg, DPP_ATTR_CONNECTOR);
wpabuf_put_le16(msg, os_strlen(ssid->dpp_connector));
wpabuf_put_str(msg, ssid->dpp_connector);
#ifdef CONFIG_TESTING_OPTIONS
skip_connector:
#endif /* CONFIG_TESTING_OPTIONS */
#ifdef CONFIG_DPP2
if (DPP_VERSION > 1) {
/* Protocol Version */
wpabuf_put_le16(msg, DPP_ATTR_PROTOCOL_VERSION);
wpabuf_put_le16(msg, 1);
wpabuf_put_u8(msg, DPP_VERSION);
}
#endif /* CONFIG_DPP2 */
/* TODO: Timeout on AP response */
wait_time = wpa_s->max_remain_on_chan;
if (wait_time > 2000)
wait_time = 2000;
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(bss->bssid), bss->freq, DPP_PA_PEER_DISCOVERY_REQ);
offchannel_send_action(wpa_s, bss->freq, bss->bssid, wpa_s->own_addr,
broadcast,
wpabuf_head(msg), wpabuf_len(msg),
wait_time, wpas_dpp_tx_introduction_status, 0);
wpabuf_free(msg);
/* Request this connection attempt to terminate - new one will be
* started when network introduction protocol completes */
os_memcpy(wpa_s->dpp_intro_bssid, bss->bssid, ETH_ALEN);
wpa_s->dpp_intro_network = ssid;
return 1;
}
int wpas_dpp_pkex_add(struct wpa_supplicant *wpa_s, const char *cmd)
{
struct dpp_bootstrap_info *own_bi;
const char *pos, *end;
unsigned int wait_time;
pos = os_strstr(cmd, " own=");
if (!pos)
return -1;
pos += 5;
own_bi = dpp_bootstrap_get_id(wpa_s->dpp, atoi(pos));
if (!own_bi) {
wpa_printf(MSG_DEBUG,
"DPP: Identified bootstrap info not found");
return -1;
}
if (own_bi->type != DPP_BOOTSTRAP_PKEX) {
wpa_printf(MSG_DEBUG,
"DPP: Identified bootstrap info not for PKEX");
return -1;
}
wpa_s->dpp_pkex_bi = own_bi;
own_bi->pkex_t = 0; /* clear pending errors on new code */
os_free(wpa_s->dpp_pkex_identifier);
wpa_s->dpp_pkex_identifier = NULL;
pos = os_strstr(cmd, " identifier=");
if (pos) {
pos += 12;
end = os_strchr(pos, ' ');
if (!end)
return -1;
wpa_s->dpp_pkex_identifier = os_malloc(end - pos + 1);
if (!wpa_s->dpp_pkex_identifier)
return -1;
os_memcpy(wpa_s->dpp_pkex_identifier, pos, end - pos);
wpa_s->dpp_pkex_identifier[end - pos] = '\0';
}
pos = os_strstr(cmd, " code=");
if (!pos)
return -1;
os_free(wpa_s->dpp_pkex_code);
wpa_s->dpp_pkex_code = os_strdup(pos + 6);
if (!wpa_s->dpp_pkex_code)
return -1;
if (os_strstr(cmd, " init=1")) {
struct dpp_pkex *pkex;
struct wpabuf *msg;
wpa_printf(MSG_DEBUG, "DPP: Initiating PKEX");
dpp_pkex_free(wpa_s->dpp_pkex);
wpa_s->dpp_pkex = dpp_pkex_init(wpa_s, own_bi, wpa_s->own_addr,
wpa_s->dpp_pkex_identifier,
wpa_s->dpp_pkex_code);
pkex = wpa_s->dpp_pkex;
if (!pkex)
return -1;
msg = pkex->exchange_req;
wait_time = wpa_s->max_remain_on_chan;
if (wait_time > 2000)
wait_time = 2000;
pkex->freq = 2437;
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR
" freq=%u type=%d",
MAC2STR(broadcast), pkex->freq,
DPP_PA_PKEX_EXCHANGE_REQ);
offchannel_send_action(wpa_s, pkex->freq, broadcast,
wpa_s->own_addr, broadcast,
wpabuf_head(msg), wpabuf_len(msg),
wait_time, wpas_dpp_tx_pkex_status, 0);
if (wait_time == 0)
wait_time = 2000;
pkex->exch_req_wait_time = wait_time;
pkex->exch_req_tries = 1;
}
/* TODO: Support multiple PKEX info entries */
os_free(wpa_s->dpp_pkex_auth_cmd);
wpa_s->dpp_pkex_auth_cmd = os_strdup(cmd);
return 1;
}
int wpas_dpp_pkex_remove(struct wpa_supplicant *wpa_s, const char *id)
{
unsigned int id_val;
if (os_strcmp(id, "*") == 0) {
id_val = 0;
} else {
id_val = atoi(id);
if (id_val == 0)
return -1;
}
if ((id_val != 0 && id_val != 1) || !wpa_s->dpp_pkex_code)
return -1;
/* TODO: Support multiple PKEX entries */
os_free(wpa_s->dpp_pkex_code);
wpa_s->dpp_pkex_code = NULL;
os_free(wpa_s->dpp_pkex_identifier);
wpa_s->dpp_pkex_identifier = NULL;
os_free(wpa_s->dpp_pkex_auth_cmd);
wpa_s->dpp_pkex_auth_cmd = NULL;
wpa_s->dpp_pkex_bi = NULL;
/* TODO: Remove dpp_pkex only if it is for the identified PKEX code */
dpp_pkex_free(wpa_s->dpp_pkex);
wpa_s->dpp_pkex = NULL;
return 0;
}
void wpas_dpp_stop(struct wpa_supplicant *wpa_s)
{
if (wpa_s->dpp_auth || wpa_s->dpp_pkex)
offchannel_send_action_done(wpa_s);
dpp_auth_deinit(wpa_s->dpp_auth);
wpa_s->dpp_auth = NULL;
dpp_pkex_free(wpa_s->dpp_pkex);
wpa_s->dpp_pkex = NULL;
if (wpa_s->dpp_gas_client && wpa_s->dpp_gas_dialog_token >= 0)
gas_query_stop(wpa_s->gas, wpa_s->dpp_gas_dialog_token);
}
int wpas_dpp_init(struct wpa_supplicant *wpa_s)
{
struct dpp_global_config config;
u8 adv_proto_id[7];
adv_proto_id[0] = WLAN_EID_VENDOR_SPECIFIC;
adv_proto_id[1] = 5;
WPA_PUT_BE24(&adv_proto_id[2], OUI_WFA);
adv_proto_id[5] = DPP_OUI_TYPE;
adv_proto_id[6] = 0x01;
if (gas_server_register(wpa_s->gas_server, adv_proto_id,
sizeof(adv_proto_id), wpas_dpp_gas_req_handler,
wpas_dpp_gas_status_handler, wpa_s) < 0)
return -1;
os_memset(&config, 0, sizeof(config));
config.msg_ctx = wpa_s;
config.cb_ctx = wpa_s;
#ifdef CONFIG_DPP2
config.process_conf_obj = wpas_dpp_process_conf_obj;
config.remove_bi = wpas_dpp_remove_bi;
#endif /* CONFIG_DPP2 */
wpa_s->dpp = dpp_global_init(&config);
return wpa_s->dpp ? 0 : -1;
}
void wpas_dpp_deinit(struct wpa_supplicant *wpa_s)
{
#ifdef CONFIG_TESTING_OPTIONS
os_free(wpa_s->dpp_config_obj_override);
wpa_s->dpp_config_obj_override = NULL;
os_free(wpa_s->dpp_discovery_override);
wpa_s->dpp_discovery_override = NULL;
os_free(wpa_s->dpp_groups_override);
wpa_s->dpp_groups_override = NULL;
wpa_s->dpp_ignore_netaccesskey_mismatch = 0;
#endif /* CONFIG_TESTING_OPTIONS */
if (!wpa_s->dpp)
return;
eloop_cancel_timeout(wpas_dpp_pkex_retry_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_reply_wait_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_init_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_auth_resp_retry_timeout, wpa_s, NULL);
#ifdef CONFIG_DPP2
eloop_cancel_timeout(wpas_dpp_config_result_wait_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_conn_status_result_wait_timeout,
wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_conn_status_result_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_reconfig_reply_wait_timeout,
wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_build_csr, wpa_s, NULL);
dpp_pfs_free(wpa_s->dpp_pfs);
wpa_s->dpp_pfs = NULL;
wpas_dpp_chirp_stop(wpa_s);
#endif /* CONFIG_DPP2 */
offchannel_send_action_done(wpa_s);
wpas_dpp_listen_stop(wpa_s);
wpas_dpp_stop(wpa_s);
wpas_dpp_pkex_remove(wpa_s, "*");
os_memset(wpa_s->dpp_intro_bssid, 0, ETH_ALEN);
os_free(wpa_s->dpp_configurator_params);
wpa_s->dpp_configurator_params = NULL;
dpp_global_clear(wpa_s->dpp);
}
#ifdef CONFIG_DPP2
int wpas_dpp_controller_start(struct wpa_supplicant *wpa_s, const char *cmd)
{
struct dpp_controller_config config;
const char *pos;
os_memset(&config, 0, sizeof(config));
config.allowed_roles = DPP_CAPAB_ENROLLEE | DPP_CAPAB_CONFIGURATOR;
if (cmd) {
pos = os_strstr(cmd, " tcp_port=");
if (pos) {
pos += 10;
config.tcp_port = atoi(pos);
}
pos = os_strstr(cmd, " role=");
if (pos) {
pos += 6;
if (os_strncmp(pos, "configurator", 12) == 0)
config.allowed_roles = DPP_CAPAB_CONFIGURATOR;
else if (os_strncmp(pos, "enrollee", 8) == 0)
config.allowed_roles = DPP_CAPAB_ENROLLEE;
else if (os_strncmp(pos, "either", 6) == 0)
config.allowed_roles = DPP_CAPAB_CONFIGURATOR |
DPP_CAPAB_ENROLLEE;
else
return -1;
}
}
config.configurator_params = wpa_s->dpp_configurator_params;
return dpp_controller_start(wpa_s->dpp, &config);
}
static void wpas_dpp_chirp_next(void *eloop_ctx, void *timeout_ctx);
static void wpas_dpp_chirp_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
wpa_printf(MSG_DEBUG, "DPP: No chirp response received");
offchannel_send_action_done(wpa_s);
wpas_dpp_chirp_next(wpa_s, NULL);
}
static void wpas_dpp_chirp_tx_status(struct wpa_supplicant *wpa_s,
unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid,
const u8 *data, size_t data_len,
enum offchannel_send_action_result result)
{
if (result == OFFCHANNEL_SEND_ACTION_FAILED) {
wpa_printf(MSG_DEBUG, "DPP: Failed to send chirp on %d MHz",
wpa_s->dpp_chirp_freq);
if (eloop_register_timeout(0, 0, wpas_dpp_chirp_next,
wpa_s, NULL) < 0)
wpas_dpp_chirp_stop(wpa_s);
return;
}
wpa_printf(MSG_DEBUG, "DPP: Chirp send completed - wait for response");
if (eloop_register_timeout(2, 0, wpas_dpp_chirp_timeout,
wpa_s, NULL) < 0)
wpas_dpp_chirp_stop(wpa_s);
}
static void wpas_dpp_chirp_start(struct wpa_supplicant *wpa_s)
{
struct wpabuf *msg;
int type;
msg = wpa_s->dpp_presence_announcement;
type = DPP_PA_PRESENCE_ANNOUNCEMENT;
if (!msg) {
msg = wpa_s->dpp_reconfig_announcement;
if (!msg)
return;
type = DPP_PA_RECONFIG_ANNOUNCEMENT;
}
wpa_printf(MSG_DEBUG, "DPP: Chirp on %d MHz", wpa_s->dpp_chirp_freq);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_TX "dst=" MACSTR " freq=%u type=%d",
MAC2STR(broadcast), wpa_s->dpp_chirp_freq, type);
if (offchannel_send_action(
wpa_s, wpa_s->dpp_chirp_freq, broadcast,
wpa_s->own_addr, broadcast,
wpabuf_head(msg), wpabuf_len(msg),
2000, wpas_dpp_chirp_tx_status, 0) < 0)
wpas_dpp_chirp_stop(wpa_s);
}
static void wpas_dpp_chirp_scan_res_handler(struct wpa_supplicant *wpa_s,
struct wpa_scan_results *scan_res)
{
struct dpp_bootstrap_info *bi = wpa_s->dpp_chirp_bi;
unsigned int i;
struct hostapd_hw_modes *mode;
int c;
struct wpa_bss *bss;
if (!bi && !wpa_s->dpp_reconfig_announcement)
return;
wpa_s->dpp_chirp_scan_done = 1;
os_free(wpa_s->dpp_chirp_freqs);
wpa_s->dpp_chirp_freqs = NULL;
/* Channels from own bootstrapping info */
if (bi) {
for (i = 0; i < bi->num_freq; i++)
int_array_add_unique(&wpa_s->dpp_chirp_freqs,
bi->freq[i]);
}
/* Preferred chirping channels */
int_array_add_unique(&wpa_s->dpp_chirp_freqs, 2437);
mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
HOSTAPD_MODE_IEEE80211A, 0);
if (mode) {
int chan44 = 0, chan149 = 0;
for (c = 0; c < mode->num_channels; c++) {
struct hostapd_channel_data *chan = &mode->channels[c];
if (chan->flag & (HOSTAPD_CHAN_DISABLED |
HOSTAPD_CHAN_RADAR))
continue;
if (chan->freq == 5220)
chan44 = 1;
if (chan->freq == 5745)
chan149 = 1;
}
if (chan149)
int_array_add_unique(&wpa_s->dpp_chirp_freqs, 5745);
else if (chan44)
int_array_add_unique(&wpa_s->dpp_chirp_freqs, 5220);
}
mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
HOSTAPD_MODE_IEEE80211AD, 0);
if (mode) {
for (c = 0; c < mode->num_channels; c++) {
struct hostapd_channel_data *chan = &mode->channels[c];
if ((chan->flag & (HOSTAPD_CHAN_DISABLED |
HOSTAPD_CHAN_RADAR)) ||
chan->freq != 60480)
continue;
int_array_add_unique(&wpa_s->dpp_chirp_freqs, 60480);
break;
}
}
/* Add channels from scan results for APs that advertise Configurator
* Connectivity element */
dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
if (wpa_bss_get_vendor_ie(bss, DPP_CC_IE_VENDOR_TYPE))
int_array_add_unique(&wpa_s->dpp_chirp_freqs,
bss->freq);
}
if (!wpa_s->dpp_chirp_freqs ||
eloop_register_timeout(0, 0, wpas_dpp_chirp_next, wpa_s, NULL) < 0)
wpas_dpp_chirp_stop(wpa_s);
}
static void wpas_dpp_chirp_next(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
int i;
if (wpa_s->dpp_chirp_listen)
wpas_dpp_listen_stop(wpa_s);
if (wpa_s->dpp_chirp_freq == 0) {
if (wpa_s->dpp_chirp_round % 4 == 0 &&
!wpa_s->dpp_chirp_scan_done) {
wpa_printf(MSG_DEBUG,
"DPP: Update channel list for chirping");
wpa_s->scan_req = MANUAL_SCAN_REQ;
wpa_s->scan_res_handler =
wpas_dpp_chirp_scan_res_handler;
wpa_supplicant_req_scan(wpa_s, 0, 0);
return;
}
wpa_s->dpp_chirp_freq = wpa_s->dpp_chirp_freqs[0];
wpa_s->dpp_chirp_round++;
wpa_printf(MSG_DEBUG, "DPP: Start chirping round %d",
wpa_s->dpp_chirp_round);
} else {
for (i = 0; wpa_s->dpp_chirp_freqs[i]; i++)
if (wpa_s->dpp_chirp_freqs[i] == wpa_s->dpp_chirp_freq)
break;
if (!wpa_s->dpp_chirp_freqs[i]) {
wpa_printf(MSG_DEBUG,
"DPP: Previous chirp freq %d not found",
wpa_s->dpp_chirp_freq);
return;
}
i++;
if (wpa_s->dpp_chirp_freqs[i]) {
wpa_s->dpp_chirp_freq = wpa_s->dpp_chirp_freqs[i];
} else {
wpa_s->dpp_chirp_iter--;
if (wpa_s->dpp_chirp_iter <= 0) {
wpa_printf(MSG_DEBUG,
"DPP: Chirping iterations completed");
wpas_dpp_chirp_stop(wpa_s);
return;
}
wpa_s->dpp_chirp_freq = 0;
wpa_s->dpp_chirp_scan_done = 0;
if (eloop_register_timeout(30, 0, wpas_dpp_chirp_next,
wpa_s, NULL) < 0) {
wpas_dpp_chirp_stop(wpa_s);
return;
}
if (wpa_s->dpp_chirp_listen) {
wpa_printf(MSG_DEBUG,
"DPP: Listen on %d MHz during chirp 30 second wait",
wpa_s->dpp_chirp_listen);
wpas_dpp_listen_start(wpa_s,
wpa_s->dpp_chirp_listen);
} else {
wpa_printf(MSG_DEBUG,
"DPP: Wait 30 seconds before starting the next chirping round");
}
return;
}
}
wpas_dpp_chirp_start(wpa_s);
}
int wpas_dpp_chirp(struct wpa_supplicant *wpa_s, const char *cmd)
{
const char *pos;
int iter = 1, listen_freq = 0;
struct dpp_bootstrap_info *bi;
pos = os_strstr(cmd, " own=");
if (!pos)
return -1;
pos += 5;
bi = dpp_bootstrap_get_id(wpa_s->dpp, atoi(pos));
if (!bi) {
wpa_printf(MSG_DEBUG,
"DPP: Identified bootstrap info not found");
return -1;
}
pos = os_strstr(cmd, " iter=");
if (pos) {
iter = atoi(pos + 6);
if (iter <= 0)
return -1;
}
pos = os_strstr(cmd, " listen=");
if (pos) {
listen_freq = atoi(pos + 8);
if (listen_freq <= 0)
return -1;
}
wpas_dpp_chirp_stop(wpa_s);
wpa_s->dpp_allowed_roles = DPP_CAPAB_ENROLLEE;
wpa_s->dpp_qr_mutual = 0;
wpa_s->dpp_chirp_bi = bi;
wpa_s->dpp_presence_announcement = dpp_build_presence_announcement(bi);
if (!wpa_s->dpp_presence_announcement)
return -1;
wpa_s->dpp_chirp_iter = iter;
wpa_s->dpp_chirp_round = 0;
wpa_s->dpp_chirp_scan_done = 0;
wpa_s->dpp_chirp_listen = listen_freq;
return eloop_register_timeout(0, 0, wpas_dpp_chirp_next, wpa_s, NULL);
}
void wpas_dpp_chirp_stop(struct wpa_supplicant *wpa_s)
{
if (wpa_s->dpp_presence_announcement ||
wpa_s->dpp_reconfig_announcement) {
offchannel_send_action_done(wpa_s);
wpa_msg(wpa_s, MSG_INFO, DPP_EVENT_CHIRP_STOPPED);
}
wpa_s->dpp_chirp_bi = NULL;
wpabuf_free(wpa_s->dpp_presence_announcement);
wpa_s->dpp_presence_announcement = NULL;
wpabuf_free(wpa_s->dpp_reconfig_announcement);
wpa_s->dpp_reconfig_announcement = NULL;
if (wpa_s->dpp_chirp_listen)
wpas_dpp_listen_stop(wpa_s);
wpa_s->dpp_chirp_listen = 0;
wpa_s->dpp_chirp_freq = 0;
os_free(wpa_s->dpp_chirp_freqs);
wpa_s->dpp_chirp_freqs = NULL;
eloop_cancel_timeout(wpas_dpp_chirp_next, wpa_s, NULL);
eloop_cancel_timeout(wpas_dpp_chirp_timeout, wpa_s, NULL);
if (wpa_s->scan_res_handler == wpas_dpp_chirp_scan_res_handler) {
wpas_abort_ongoing_scan(wpa_s);
wpa_s->scan_res_handler = NULL;
}
}
int wpas_dpp_reconfig(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
{
if (!ssid->dpp_connector || !ssid->dpp_netaccesskey ||
!ssid->dpp_csign)
return -1;
if (wpa_s->dpp_auth) {
wpa_printf(MSG_DEBUG,
"DPP: Not ready to start reconfiguration - pending authentication exchange in progress");
return -1;
}
wpas_dpp_chirp_stop(wpa_s);
wpa_s->dpp_allowed_roles = DPP_CAPAB_ENROLLEE;
wpa_s->dpp_qr_mutual = 0;
wpa_s->dpp_reconfig_announcement =
dpp_build_reconfig_announcement(ssid->dpp_csign,
ssid->dpp_csign_len);
if (!wpa_s->dpp_reconfig_announcement)
return -1;
wpa_s->dpp_reconfig_ssid = ssid;
wpa_s->dpp_reconfig_ssid_id = ssid->id;
wpa_s->dpp_chirp_iter = 1;
wpa_s->dpp_chirp_round = 0;
wpa_s->dpp_chirp_scan_done = 0;
wpa_s->dpp_chirp_listen = 0;
return eloop_register_timeout(0, 0, wpas_dpp_chirp_next, wpa_s, NULL);
}
static int wpas_dpp_build_conf_resp(struct wpa_supplicant *wpa_s,
struct dpp_authentication *auth, bool tcp)
{
struct wpabuf *resp;
resp = dpp_build_conf_resp(auth, auth->e_nonce, auth->curve->nonce_len,
auth->e_netrole, true);
if (!resp)
return -1;
if (tcp) {
auth->conf_resp_tcp = resp;
return 0;
}
if (gas_server_set_resp(wpa_s->gas_server, auth->cert_resp_ctx,
resp) < 0) {
wpa_printf(MSG_DEBUG,
"DPP: Could not find pending GAS response");
wpabuf_free(resp);
return -1;
}
auth->conf_resp = resp;
return 0;
}
int wpas_dpp_ca_set(struct wpa_supplicant *wpa_s, const char *cmd)
{
int peer = -1;
const char *pos, *value;
struct dpp_authentication *auth = wpa_s->dpp_auth;
u8 *bin;
size_t bin_len;
struct wpabuf *buf;
bool tcp = false;
pos = os_strstr(cmd, " peer=");
if (pos) {
peer = atoi(pos + 6);
if (!auth || !auth->waiting_cert ||
(auth->peer_bi &&
(unsigned int) peer != auth->peer_bi->id)) {
auth = dpp_controller_get_auth(wpa_s->dpp, peer);
tcp = true;
}
}
if (!auth || !auth->waiting_cert) {
wpa_printf(MSG_DEBUG,
"DPP: No authentication exchange waiting for certificate information");
return -1;
}
if (peer >= 0 &&
(!auth->peer_bi ||
(unsigned int) peer != auth->peer_bi->id) &&
(!auth->tmp_peer_bi ||
(unsigned int) peer != auth->tmp_peer_bi->id)) {
wpa_printf(MSG_DEBUG, "DPP: Peer mismatch");
return -1;
}
pos = os_strstr(cmd, " value=");
if (!pos)
return -1;
value = pos + 7;
pos = os_strstr(cmd, " name=");
if (!pos)
return -1;
pos += 6;
if (os_strncmp(pos, "status ", 7) == 0) {
auth->force_conf_resp_status = atoi(value);
return wpas_dpp_build_conf_resp(wpa_s, auth, tcp);
}
if (os_strncmp(pos, "trustedEapServerName ", 21) == 0) {
os_free(auth->trusted_eap_server_name);
auth->trusted_eap_server_name = os_strdup(value);
return auth->trusted_eap_server_name ? 0 : -1;
}
bin = base64_decode(value, os_strlen(value), &bin_len);
if (!bin)
return -1;
buf = wpabuf_alloc_copy(bin, bin_len);
os_free(bin);
if (os_strncmp(pos, "caCert ", 7) == 0) {
wpabuf_free(auth->cacert);
auth->cacert = buf;
return 0;
}
if (os_strncmp(pos, "certBag ", 8) == 0) {
wpabuf_free(auth->certbag);
auth->certbag = buf;
return wpas_dpp_build_conf_resp(wpa_s, auth, tcp);
}
wpabuf_free(buf);
return -1;
}
#endif /* CONFIG_DPP2 */
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