/*
* Wi-Fi Protected Setup - common functionality
- * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2008-2012, 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.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "includes.h"
#include "common.h"
-#include "dh_groups.h"
-#include "sha256.h"
-#include "aes_wrap.h"
-#include "crypto.h"
+#include "common/defs.h"
+#include "common/ieee802_11_common.h"
+#include "crypto/aes_wrap.h"
+#include "crypto/crypto.h"
+#include "crypto/dh_group5.h"
+#include "crypto/sha1.h"
+#include "crypto/sha256.h"
+#include "crypto/random.h"
#include "wps_i.h"
#include "wps_dev_attr.h"
return -1;
}
- dh_shared = dh_derive_shared(pubkey, wps->dh_privkey,
- dh_groups_get(WPS_DH_GROUP));
+ wpa_hexdump_buf_key(MSG_DEBUG, "WPS: DH Private Key", wps->dh_privkey);
+ wpa_hexdump_buf(MSG_DEBUG, "WPS: DH peer Public Key", pubkey);
+ dh_shared = dh5_derive_shared(wps->dh_ctx, pubkey, wps->dh_privkey);
+ dh5_free(wps->dh_ctx);
+ wps->dh_ctx = NULL;
dh_shared = wpabuf_zeropad(dh_shared, 192);
if (dh_shared == NULL) {
wpa_printf(MSG_DEBUG, "WPS: Failed to derive DH shared key");
unsigned int val;
/* Generate seven random digits for the PIN */
- if (os_get_random((unsigned char *) &val, sizeof(val)) < 0) {
+ if (random_get_bytes((unsigned char *) &val, sizeof(val)) < 0) {
struct os_time now;
os_get_time(&now);
val = os_random() ^ now.sec ^ now.usec;
}
-void wps_fail_event(struct wps_context *wps, enum wps_msg_type msg)
+int wps_pin_str_valid(const char *pin)
+{
+ const char *p;
+ size_t len;
+
+ p = pin;
+ while (*p >= '0' && *p <= '9')
+ p++;
+ if (*p != '\0')
+ return 0;
+
+ len = p - pin;
+ return len == 4 || len == 8;
+}
+
+
+void wps_fail_event(struct wps_context *wps, enum wps_msg_type msg,
+ u16 config_error, u16 error_indication, const u8 *mac_addr)
{
union wps_event_data data;
os_memset(&data, 0, sizeof(data));
data.fail.msg = msg;
+ data.fail.config_error = config_error;
+ data.fail.error_indication = error_indication;
+ os_memcpy(data.fail.peer_macaddr, mac_addr, ETH_ALEN);
wps->event_cb(wps->cb_ctx, WPS_EV_FAIL, &data);
}
-void wps_success_event(struct wps_context *wps)
+void wps_success_event(struct wps_context *wps, const u8 *mac_addr)
{
+ union wps_event_data data;
+
if (wps->event_cb == NULL)
return;
- wps->event_cb(wps->cb_ctx, WPS_EV_SUCCESS, NULL);
+ os_memset(&data, 0, sizeof(data));
+ os_memcpy(data.success.peer_macaddr, mac_addr, ETH_ALEN);
+ wps->event_cb(wps->cb_ctx, WPS_EV_SUCCESS, &data);
}
-void wps_pwd_auth_fail_event(struct wps_context *wps, int enrollee, int part)
+void wps_pwd_auth_fail_event(struct wps_context *wps, int enrollee, int part,
+ const u8 *mac_addr)
{
union wps_event_data data;
os_memset(&data, 0, sizeof(data));
data.pwd_auth_fail.enrollee = enrollee;
data.pwd_auth_fail.part = part;
+ os_memcpy(data.pwd_auth_fail.peer_macaddr, mac_addr, ETH_ALEN);
wps->event_cb(wps->cb_ctx, WPS_EV_PWD_AUTH_FAIL, &data);
}
wps->event_cb(wps->cb_ctx, WPS_EV_PBC_TIMEOUT, NULL);
}
+
+
+void wps_pbc_active_event(struct wps_context *wps)
+{
+ if (wps->event_cb == NULL)
+ return;
+
+ wps->event_cb(wps->cb_ctx, WPS_EV_PBC_ACTIVE, NULL);
+}
+
+
+void wps_pbc_disable_event(struct wps_context *wps)
+{
+ if (wps->event_cb == NULL)
+ return;
+
+ wps->event_cb(wps->cb_ctx, WPS_EV_PBC_DISABLE, NULL);
+}
+
+
+#ifdef CONFIG_WPS_OOB
+
+struct wpabuf * wps_get_oob_cred(struct wps_context *wps, int rf_band,
+ int channel)
+{
+ struct wps_data data;
+ struct wpabuf *plain;
+
+ plain = wpabuf_alloc(500);
+ if (plain == NULL) {
+ wpa_printf(MSG_ERROR, "WPS: Failed to allocate memory for OOB "
+ "credential");
+ return NULL;
+ }
+
+ os_memset(&data, 0, sizeof(data));
+ data.wps = wps;
+ data.auth_type = wps->auth_types;
+ data.encr_type = wps->encr_types;
+ if (wps_build_cred(&data, plain) ||
+ (rf_band && wps_build_rf_bands_attr(plain, rf_band)) ||
+ (channel && wps_build_ap_channel(plain, channel)) ||
+ wps_build_mac_addr(plain, wps->dev.mac_addr) ||
+ wps_build_wfa_ext(plain, 0, NULL, 0)) {
+ os_free(data.new_psk);
+ wpabuf_free(plain);
+ return NULL;
+ }
+
+ if (wps->wps_state == WPS_STATE_NOT_CONFIGURED && data.new_psk &&
+ wps->ap) {
+ struct wps_credential cred;
+
+ wpa_printf(MSG_DEBUG, "WPS: Moving to Configured state based "
+ "on credential token generation");
+
+ os_memset(&cred, 0, sizeof(cred));
+ os_memcpy(cred.ssid, wps->ssid, wps->ssid_len);
+ cred.ssid_len = wps->ssid_len;
+ cred.auth_type = WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK;
+ cred.encr_type = WPS_ENCR_TKIP | WPS_ENCR_AES;
+ os_memcpy(cred.key, data.new_psk, data.new_psk_len);
+ cred.key_len = data.new_psk_len;
+
+ wps->wps_state = WPS_STATE_CONFIGURED;
+ wpa_hexdump_ascii_key(MSG_DEBUG,
+ "WPS: Generated random passphrase",
+ data.new_psk, data.new_psk_len);
+ if (wps->cred_cb)
+ wps->cred_cb(wps->cb_ctx, &cred);
+ }
+
+ os_free(data.new_psk);
+
+ return plain;
+}
+
+
+struct wpabuf * wps_build_nfc_pw_token(u16 dev_pw_id,
+ const struct wpabuf *pubkey,
+ const struct wpabuf *dev_pw)
+{
+ struct wpabuf *data;
+
+ data = wpabuf_alloc(200);
+ if (data == NULL)
+ return NULL;
+
+ if (wps_build_oob_dev_pw(data, dev_pw_id, pubkey,
+ wpabuf_head(dev_pw), wpabuf_len(dev_pw)) ||
+ wps_build_wfa_ext(data, 0, NULL, 0)) {
+ wpa_printf(MSG_ERROR, "WPS: Failed to build NFC password "
+ "token");
+ wpabuf_free(data);
+ return NULL;
+ }
+
+ return data;
+}
+
+
+int wps_oob_use_cred(struct wps_context *wps, struct wps_parse_attr *attr)
+{
+ struct wpabuf msg;
+ size_t i;
+
+ for (i = 0; i < attr->num_cred; i++) {
+ struct wps_credential local_cred;
+ struct wps_parse_attr cattr;
+
+ os_memset(&local_cred, 0, sizeof(local_cred));
+ wpabuf_set(&msg, attr->cred[i], attr->cred_len[i]);
+ if (wps_parse_msg(&msg, &cattr) < 0 ||
+ wps_process_cred(&cattr, &local_cred)) {
+ wpa_printf(MSG_ERROR, "WPS: Failed to parse OOB "
+ "credential");
+ return -1;
+ }
+ wps->cred_cb(wps->cb_ctx, &local_cred);
+ }
+
+ return 0;
+}
+
+
+#endif /* CONFIG_WPS_OOB */
+
+
+int wps_dev_type_str2bin(const char *str, u8 dev_type[WPS_DEV_TYPE_LEN])
+{
+ const char *pos;
+
+ /* <categ>-<OUI>-<subcateg> */
+ WPA_PUT_BE16(dev_type, atoi(str));
+ pos = os_strchr(str, '-');
+ if (pos == NULL)
+ return -1;
+ pos++;
+ if (hexstr2bin(pos, &dev_type[2], 4))
+ return -1;
+ pos = os_strchr(pos, '-');
+ if (pos == NULL)
+ return -1;
+ pos++;
+ WPA_PUT_BE16(&dev_type[6], atoi(pos));
+
+
+ return 0;
+}
+
+
+char * wps_dev_type_bin2str(const u8 dev_type[WPS_DEV_TYPE_LEN], char *buf,
+ size_t buf_len)
+{
+ int ret;
+
+ ret = os_snprintf(buf, buf_len, "%u-%08X-%u",
+ WPA_GET_BE16(dev_type), WPA_GET_BE32(&dev_type[2]),
+ WPA_GET_BE16(&dev_type[6]));
+ if (ret < 0 || (unsigned int) ret >= buf_len)
+ return NULL;
+
+ return buf;
+}
+
+
+void uuid_gen_mac_addr(const u8 *mac_addr, u8 *uuid)
+{
+ const u8 *addr[2];
+ size_t len[2];
+ u8 hash[SHA1_MAC_LEN];
+ u8 nsid[16] = {
+ 0x52, 0x64, 0x80, 0xf8,
+ 0xc9, 0x9b,
+ 0x4b, 0xe5,
+ 0xa6, 0x55,
+ 0x58, 0xed, 0x5f, 0x5d, 0x60, 0x84
+ };
+
+ addr[0] = nsid;
+ len[0] = sizeof(nsid);
+ addr[1] = mac_addr;
+ len[1] = 6;
+ sha1_vector(2, addr, len, hash);
+ os_memcpy(uuid, hash, 16);
+
+ /* Version: 5 = named-based version using SHA-1 */
+ uuid[6] = (5 << 4) | (uuid[6] & 0x0f);
+
+ /* Variant specified in RFC 4122 */
+ uuid[8] = 0x80 | (uuid[8] & 0x3f);
+}
+
+
+u16 wps_config_methods_str2bin(const char *str)
+{
+ u16 methods = 0;
+
+ if (str == NULL) {
+ /* Default to enabling methods based on build configuration */
+ methods |= WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD;
+#ifdef CONFIG_WPS2
+ methods |= WPS_CONFIG_VIRT_DISPLAY;
+#endif /* CONFIG_WPS2 */
+#ifdef CONFIG_WPS_NFC
+ methods |= WPS_CONFIG_NFC_INTERFACE;
+#endif /* CONFIG_WPS_NFC */
+ } else {
+ if (os_strstr(str, "ethernet"))
+ methods |= WPS_CONFIG_ETHERNET;
+ if (os_strstr(str, "label"))
+ methods |= WPS_CONFIG_LABEL;
+ if (os_strstr(str, "display"))
+ methods |= WPS_CONFIG_DISPLAY;
+ if (os_strstr(str, "ext_nfc_token"))
+ methods |= WPS_CONFIG_EXT_NFC_TOKEN;
+ if (os_strstr(str, "int_nfc_token"))
+ methods |= WPS_CONFIG_INT_NFC_TOKEN;
+ if (os_strstr(str, "nfc_interface"))
+ methods |= WPS_CONFIG_NFC_INTERFACE;
+ if (os_strstr(str, "push_button"))
+ methods |= WPS_CONFIG_PUSHBUTTON;
+ if (os_strstr(str, "keypad"))
+ methods |= WPS_CONFIG_KEYPAD;
+#ifdef CONFIG_WPS2
+ if (os_strstr(str, "virtual_display"))
+ methods |= WPS_CONFIG_VIRT_DISPLAY;
+ if (os_strstr(str, "physical_display"))
+ methods |= WPS_CONFIG_PHY_DISPLAY;
+ if (os_strstr(str, "virtual_push_button"))
+ methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
+ if (os_strstr(str, "physical_push_button"))
+ methods |= WPS_CONFIG_PHY_PUSHBUTTON;
+#endif /* CONFIG_WPS2 */
+ }
+
+ return methods;
+}
+
+
+struct wpabuf * wps_build_wsc_ack(struct wps_data *wps)
+{
+ struct wpabuf *msg;
+
+ wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_ACK");
+
+ msg = wpabuf_alloc(1000);
+ if (msg == NULL)
+ return NULL;
+
+ if (wps_build_version(msg) ||
+ wps_build_msg_type(msg, WPS_WSC_ACK) ||
+ wps_build_enrollee_nonce(wps, msg) ||
+ wps_build_registrar_nonce(wps, msg) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
+ wpabuf_free(msg);
+ return NULL;
+ }
+
+ return msg;
+}
+
+
+struct wpabuf * wps_build_wsc_nack(struct wps_data *wps)
+{
+ struct wpabuf *msg;
+
+ wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_NACK");
+
+ msg = wpabuf_alloc(1000);
+ if (msg == NULL)
+ return NULL;
+
+ if (wps_build_version(msg) ||
+ wps_build_msg_type(msg, WPS_WSC_NACK) ||
+ wps_build_enrollee_nonce(wps, msg) ||
+ wps_build_registrar_nonce(wps, msg) ||
+ wps_build_config_error(msg, wps->config_error) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
+ wpabuf_free(msg);
+ return NULL;
+ }
+
+ return msg;
+}
+
+
+#ifdef CONFIG_WPS_NFC
+
+struct wpabuf * wps_nfc_token_build(int ndef, int id, struct wpabuf *pubkey,
+ struct wpabuf *dev_pw)
+{
+ struct wpabuf *ret;
+
+ if (pubkey == NULL || dev_pw == NULL)
+ return NULL;
+
+ ret = wps_build_nfc_pw_token(id, pubkey, dev_pw);
+ if (ndef && ret) {
+ struct wpabuf *tmp;
+ tmp = ndef_build_wifi(ret);
+ wpabuf_free(ret);
+ if (tmp == NULL)
+ return NULL;
+ ret = tmp;
+ }
+
+ return ret;
+}
+
+
+int wps_nfc_gen_dh(struct wpabuf **pubkey, struct wpabuf **privkey)
+{
+ struct wpabuf *priv = NULL, *pub = NULL;
+ void *dh_ctx;
+
+ dh_ctx = dh5_init(&priv, &pub);
+ if (dh_ctx == NULL)
+ return -1;
+ pub = wpabuf_zeropad(pub, 192);
+ if (pub == NULL) {
+ wpabuf_free(priv);
+ return -1;
+ }
+ wpa_hexdump_buf(MSG_DEBUG, "WPS: Generated new DH pubkey", pub);
+ dh5_free(dh_ctx);
+
+ wpabuf_free(*pubkey);
+ *pubkey = pub;
+ wpabuf_free(*privkey);
+ *privkey = priv;
+
+ return 0;
+}
+
+
+struct wpabuf * wps_nfc_token_gen(int ndef, int *id, struct wpabuf **pubkey,
+ struct wpabuf **privkey,
+ struct wpabuf **dev_pw)
+{
+ struct wpabuf *pw;
+ u16 val;
+
+ pw = wpabuf_alloc(WPS_OOB_DEVICE_PASSWORD_LEN);
+ if (pw == NULL)
+ return NULL;
+
+ if (random_get_bytes(wpabuf_put(pw, WPS_OOB_DEVICE_PASSWORD_LEN),
+ WPS_OOB_DEVICE_PASSWORD_LEN) ||
+ random_get_bytes((u8 *) &val, sizeof(val))) {
+ wpabuf_free(pw);
+ return NULL;
+ }
+
+ if (wps_nfc_gen_dh(pubkey, privkey) < 0) {
+ wpabuf_free(pw);
+ return NULL;
+ }
+
+ *id = 0x10 + val % 0xfff0;
+ wpabuf_free(*dev_pw);
+ *dev_pw = pw;
+
+ return wps_nfc_token_build(ndef, *id, *pubkey, *dev_pw);
+}
+
+
+struct wpabuf * wps_build_nfc_handover_req(struct wps_context *ctx,
+ struct wpabuf *nfc_dh_pubkey)
+{
+ struct wpabuf *msg;
+ void *len;
+
+ if (ctx == NULL)
+ return NULL;
+
+ wpa_printf(MSG_DEBUG, "WPS: Building attributes for NFC connection "
+ "handover request");
+
+ if (nfc_dh_pubkey == NULL) {
+ wpa_printf(MSG_DEBUG, "WPS: No NFC OOB Device Password "
+ "configured");
+ return NULL;
+ }
+
+ msg = wpabuf_alloc(1000);
+ if (msg == NULL)
+ return msg;
+ len = wpabuf_put(msg, 2);
+
+ if (wps_build_oob_dev_pw(msg, DEV_PW_NFC_CONNECTION_HANDOVER,
+ nfc_dh_pubkey, NULL, 0) ||
+ wps_build_uuid_e(msg, ctx->uuid) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
+ wpabuf_free(msg);
+ return NULL;
+ }
+
+ WPA_PUT_BE16(len, wpabuf_len(msg) - 2);
+
+ return msg;
+}
+
+
+static int wps_build_ssid(struct wpabuf *msg, struct wps_context *wps)
+{
+ wpa_printf(MSG_DEBUG, "WPS: * SSID");
+ wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID in Connection Handover Select",
+ wps->ssid, wps->ssid_len);
+ wpabuf_put_be16(msg, ATTR_SSID);
+ wpabuf_put_be16(msg, wps->ssid_len);
+ wpabuf_put_data(msg, wps->ssid, wps->ssid_len);
+ return 0;
+}
+
+
+static int wps_build_ap_freq(struct wpabuf *msg, int freq)
+{
+ enum hostapd_hw_mode mode;
+ u8 channel, rf_band;
+ u16 ap_channel;
+
+ if (freq <= 0)
+ return 0;
+
+ mode = ieee80211_freq_to_chan(freq, &channel);
+ if (mode == NUM_HOSTAPD_MODES)
+ return 0; /* Unknown channel */
+
+ if (mode == HOSTAPD_MODE_IEEE80211G || mode == HOSTAPD_MODE_IEEE80211B)
+ rf_band = WPS_RF_24GHZ;
+ else if (mode == HOSTAPD_MODE_IEEE80211A)
+ rf_band = WPS_RF_50GHZ;
+ else
+ return 0; /* Unknown band */
+ ap_channel = channel;
+
+ if (wps_build_rf_bands_attr(msg, rf_band) ||
+ wps_build_ap_channel(msg, ap_channel))
+ return -1;
+
+ return 0;
+}
+
+
+struct wpabuf * wps_build_nfc_handover_sel(struct wps_context *ctx,
+ struct wpabuf *nfc_dh_pubkey,
+ const u8 *bssid, int freq)
+{
+ struct wpabuf *msg;
+ void *len;
+
+ if (ctx == NULL)
+ return NULL;
+
+ wpa_printf(MSG_DEBUG, "WPS: Building attributes for NFC connection "
+ "handover select");
+
+ if (nfc_dh_pubkey == NULL) {
+ wpa_printf(MSG_DEBUG, "WPS: No NFC OOB Device Password "
+ "configured");
+ return NULL;
+ }
+
+ msg = wpabuf_alloc(1000);
+ if (msg == NULL)
+ return msg;
+ len = wpabuf_put(msg, 2);
+
+ if (wps_build_oob_dev_pw(msg, DEV_PW_NFC_CONNECTION_HANDOVER,
+ nfc_dh_pubkey, NULL, 0) ||
+ wps_build_ssid(msg, ctx) ||
+ wps_build_ap_freq(msg, freq) ||
+ (bssid && wps_build_mac_addr(msg, bssid)) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
+ wpabuf_free(msg);
+ return NULL;
+ }
+
+ WPA_PUT_BE16(len, wpabuf_len(msg) - 2);
+
+ return msg;
+}
+
+
+struct wpabuf * wps_build_nfc_handover_req_p2p(struct wps_context *ctx,
+ struct wpabuf *nfc_dh_pubkey)
+{
+ struct wpabuf *msg;
+
+ if (ctx == NULL)
+ return NULL;
+
+ wpa_printf(MSG_DEBUG, "WPS: Building attributes for NFC connection "
+ "handover request (P2P)");
+
+ if (nfc_dh_pubkey == NULL) {
+ wpa_printf(MSG_DEBUG, "WPS: No NFC DH Public Key configured");
+ return NULL;
+ }
+
+ msg = wpabuf_alloc(1000);
+ if (msg == NULL)
+ return msg;
+
+ if (wps_build_manufacturer(&ctx->dev, msg) ||
+ wps_build_model_name(&ctx->dev, msg) ||
+ wps_build_model_number(&ctx->dev, msg) ||
+ wps_build_oob_dev_pw(msg, DEV_PW_NFC_CONNECTION_HANDOVER,
+ nfc_dh_pubkey, NULL, 0) ||
+ wps_build_rf_bands(&ctx->dev, msg, 0) ||
+ wps_build_serial_number(&ctx->dev, msg) ||
+ wps_build_uuid_e(msg, ctx->uuid) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
+ wpabuf_free(msg);
+ return NULL;
+ }
+
+ return msg;
+}
+
+
+struct wpabuf * wps_build_nfc_handover_sel_p2p(struct wps_context *ctx,
+ int nfc_dev_pw_id,
+ struct wpabuf *nfc_dh_pubkey,
+ struct wpabuf *nfc_dev_pw)
+{
+ struct wpabuf *msg;
+ const u8 *dev_pw;
+ size_t dev_pw_len;
+
+ if (ctx == NULL)
+ return NULL;
+
+ wpa_printf(MSG_DEBUG, "WPS: Building attributes for NFC connection "
+ "handover select (P2P)");
+
+ if (nfc_dh_pubkey == NULL ||
+ (nfc_dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER &&
+ nfc_dev_pw == NULL)) {
+ wpa_printf(MSG_DEBUG, "WPS: No NFC OOB Device Password "
+ "configured");
+ return NULL;
+ }
+
+ msg = wpabuf_alloc(1000);
+ if (msg == NULL)
+ return msg;
+
+ if (nfc_dev_pw) {
+ dev_pw = wpabuf_head(nfc_dev_pw);
+ dev_pw_len = wpabuf_len(nfc_dev_pw);
+ } else {
+ dev_pw = NULL;
+ dev_pw_len = 0;
+ }
+
+ if (wps_build_manufacturer(&ctx->dev, msg) ||
+ wps_build_model_name(&ctx->dev, msg) ||
+ wps_build_model_number(&ctx->dev, msg) ||
+ wps_build_oob_dev_pw(msg, nfc_dev_pw_id, nfc_dh_pubkey,
+ dev_pw, dev_pw_len) ||
+ wps_build_rf_bands(&ctx->dev, msg, 0) ||
+ wps_build_serial_number(&ctx->dev, msg) ||
+ wps_build_uuid_e(msg, ctx->uuid) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
+ wpabuf_free(msg);
+ return NULL;
+ }
+
+ return msg;
+}
+
+#endif /* CONFIG_WPS_NFC */
tuxillo's projects / dragonfly.git / blobdiff