hostapd/wpa_supplicant/wps_supplicant.c

224 lines
5.7 KiB
C

/*
* wpa_supplicant / WPS integration
* Copyright (c) 2008, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include "includes.h"
#include "common.h"
#include "ieee802_11_defs.h"
#include "wpa_common.h"
#include "config.h"
#include "eap_peer/eap.h"
#include "wpa_supplicant_i.h"
#include "wps/wps.h"
#include "wps/wps_defs.h"
#include "wps_supplicant.h"
int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
{
if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
!(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
"try to associate with the received credential");
wpa_supplicant_deauthenticate(wpa_s,
WLAN_REASON_DEAUTH_LEAVING);
wpa_s->reassociate = 1;
wpa_supplicant_req_scan(wpa_s, 0, 0);
return 1;
}
return 0;
}
static int wpa_supplicant_wps_cred(void *ctx,
const struct wps_credential *cred)
{
struct wpa_supplicant *wpa_s = ctx;
struct wpa_ssid *ssid = wpa_s->current_ssid;
wpa_msg(wpa_s, MSG_INFO, "WPS: New credential received");
if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
"on the received credential");
os_free(ssid->eap.identity);
ssid->eap.identity = NULL;
ssid->eap.identity_len = 0;
os_free(ssid->eap.phase1);
ssid->eap.phase1 = NULL;
os_free(ssid->eap.eap_methods);
ssid->eap.eap_methods = NULL;
} else {
wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
"received credential");
ssid = wpa_config_add_network(wpa_s->conf);
if (ssid == NULL)
return -1;
}
wpa_config_set_network_defaults(ssid);
os_free(ssid->ssid);
ssid->ssid = os_malloc(cred->ssid_len);
if (ssid->ssid) {
os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
ssid->ssid_len = cred->ssid_len;
}
switch (cred->encr_type) {
case WPS_ENCR_NONE:
ssid->pairwise_cipher = ssid->group_cipher = WPA_CIPHER_NONE;
break;
case WPS_ENCR_WEP:
ssid->pairwise_cipher = ssid->group_cipher =
WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104;
if (cred->key_len > 0 && cred->key_len <= MAX_WEP_KEY_LEN &&
cred->key_idx < NUM_WEP_KEYS) {
os_memcpy(ssid->wep_key[cred->key_idx], cred->key,
cred->key_len);
ssid->wep_key_len[cred->key_idx] = cred->key_len;
ssid->wep_tx_keyidx = cred->key_idx;
}
break;
case WPS_ENCR_TKIP:
ssid->pairwise_cipher = WPA_CIPHER_TKIP;
ssid->group_cipher = WPA_CIPHER_TKIP;
break;
case WPS_ENCR_AES:
ssid->pairwise_cipher = WPA_CIPHER_CCMP;
ssid->group_cipher = WPA_CIPHER_CCMP | WPA_CIPHER_TKIP;
break;
}
switch (cred->auth_type) {
case WPS_AUTH_OPEN:
ssid->auth_alg = WPA_AUTH_ALG_OPEN;
ssid->key_mgmt = WPA_KEY_MGMT_NONE;
ssid->proto = 0;
break;
case WPS_AUTH_SHARED:
ssid->auth_alg = WPA_AUTH_ALG_SHARED;
ssid->key_mgmt = WPA_KEY_MGMT_NONE;
ssid->proto = 0;
break;
case WPS_AUTH_WPAPSK:
ssid->auth_alg = WPA_AUTH_ALG_OPEN;
ssid->key_mgmt = WPA_KEY_MGMT_PSK;
ssid->proto = WPA_PROTO_WPA;
break;
case WPS_AUTH_WPA:
ssid->auth_alg = WPA_AUTH_ALG_OPEN;
ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
ssid->proto = WPA_PROTO_WPA;
break;
case WPS_AUTH_WPA2:
ssid->auth_alg = WPA_AUTH_ALG_OPEN;
ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
ssid->proto = WPA_PROTO_RSN;
break;
case WPS_AUTH_WPA2PSK:
ssid->auth_alg = WPA_AUTH_ALG_OPEN;
ssid->key_mgmt = WPA_KEY_MGMT_PSK;
ssid->proto = WPA_PROTO_RSN;
break;
}
if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
if (cred->key_len == 2 * PMK_LEN) {
if (hexstr2bin((const char *) cred->key, ssid->psk,
PMK_LEN)) {
wpa_printf(MSG_ERROR, "WPS: Invalid Network "
"Key");
return -1;
}
ssid->psk_set = 1;
} else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
os_free(ssid->passphrase);
ssid->passphrase = os_malloc(cred->key_len + 1);
if (ssid->passphrase == NULL)
return -1;
os_memcpy(ssid->passphrase, cred->key, cred->key_len);
ssid->passphrase[cred->key_len] = '\0';
wpa_config_update_psk(ssid);
} else {
wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
"length %lu",
(unsigned long) cred->key_len);
return -1;
}
}
#ifndef CONFIG_NO_CONFIG_WRITE
if (wpa_s->conf->update_config &&
wpa_config_write(wpa_s->confname, wpa_s->conf)) {
wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
return -1;
}
#endif /* CONFIG_NO_CONFIG_WRITE */
return 0;
}
u8 wpas_wps_get_req_type(struct wpa_ssid *ssid)
{
if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
eap_is_wps_pin_enrollee(&ssid->eap))
return WPS_REQ_ENROLLEE;
else
return WPS_REQ_REGISTRAR;
}
int wpas_wps_init(struct wpa_supplicant *wpa_s)
{
struct wps_context *wps;
wps = os_zalloc(sizeof(*wps));
if (wps == NULL)
return -1;
wps->cred_cb = wpa_supplicant_wps_cred;
wps->cb_ctx = wpa_s;
/* TODO: make the device data configurable */
wps->dev.device_name = "dev name";
wps->dev.manufacturer = "manuf";
wps->dev.model_name = "model name";
wps->dev.model_number = "model number";
wps->dev.serial_number = "12345";
wps->dev.categ = WPS_DEV_COMPUTER;
wps->dev.oui = WPS_DEV_OUI_WFA;
wps->dev.sub_categ = WPS_DEV_COMPUTER_PC;
wps->dev.os_version = 0;
wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ;
os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
os_memcpy(wps->uuid, wpa_s->conf->uuid, 16);
wpa_s->wps = wps;
return 0;
}
void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
{
if (wpa_s->wps == NULL)
return;
os_free(wpa_s->wps->network_key);
os_free(wpa_s->wps);
wpa_s->wps = NULL;
}