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Jouni Malinenfa201b62008-11-28 19:46:22 +02001/*
2 * wpa_supplicant / WPS integration
3 * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15#include "includes.h"
16
17#include "common.h"
18#include "ieee802_11_defs.h"
19#include "wpa_common.h"
20#include "config.h"
21#include "wpa_supplicant_i.h"
22#include "wps/wps.h"
23#include "wps/wps_defs.h"
24#include "wps_supplicant.h"
25
26
27int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
28{
29 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
30 !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
31 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
32 "try to associate with the received credential");
33 wpa_supplicant_deauthenticate(wpa_s,
34 WLAN_REASON_DEAUTH_LEAVING);
35 wpa_s->reassociate = 1;
36 wpa_supplicant_req_scan(wpa_s, 0, 0);
37 return 1;
38 }
39
40 return 0;
41}
42
43
Jouni Malinenbcbbc7a2008-11-28 20:02:32 +020044static int wpa_supplicant_wps_cred(void *ctx,
45 const struct wps_credential *cred)
Jouni Malinenfa201b62008-11-28 19:46:22 +020046{
47 struct wpa_supplicant *wpa_s = ctx;
48 struct wpa_ssid *ssid = wpa_s->current_ssid;
49
50 wpa_msg(wpa_s, MSG_INFO, "WPS: New credential received");
51
52 if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
53 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
54 "on the received credential");
55 os_free(ssid->eap.identity);
56 ssid->eap.identity = NULL;
57 ssid->eap.identity_len = 0;
58 os_free(ssid->eap.phase1);
59 ssid->eap.phase1 = NULL;
60 os_free(ssid->eap.eap_methods);
61 ssid->eap.eap_methods = NULL;
62 } else {
63 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
64 "received credential");
65 ssid = wpa_config_add_network(wpa_s->conf);
66 if (ssid == NULL)
67 return -1;
68 }
69
70 wpa_config_set_network_defaults(ssid);
71
72 os_free(ssid->ssid);
73 ssid->ssid = os_malloc(cred->ssid_len);
74 if (ssid->ssid) {
75 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
76 ssid->ssid_len = cred->ssid_len;
77 }
78
79 switch (cred->encr_type) {
80 case WPS_ENCR_NONE:
81 ssid->pairwise_cipher = ssid->group_cipher = WPA_CIPHER_NONE;
82 break;
83 case WPS_ENCR_WEP:
84 ssid->pairwise_cipher = ssid->group_cipher =
85 WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104;
86 if (cred->key_len > 0 && cred->key_len <= MAX_WEP_KEY_LEN &&
87 cred->key_idx < NUM_WEP_KEYS) {
88 os_memcpy(ssid->wep_key[cred->key_idx], cred->key,
89 cred->key_len);
90 ssid->wep_key_len[cred->key_idx] = cred->key_len;
91 ssid->wep_tx_keyidx = cred->key_idx;
92 }
93 break;
94 case WPS_ENCR_TKIP:
95 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
96 ssid->group_cipher = WPA_CIPHER_TKIP;
97 break;
98 case WPS_ENCR_AES:
99 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
100 ssid->group_cipher = WPA_CIPHER_CCMP | WPA_CIPHER_TKIP;
101 break;
102 }
103
104 switch (cred->auth_type) {
105 case WPS_AUTH_OPEN:
106 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
107 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
108 ssid->proto = 0;
109 break;
110 case WPS_AUTH_SHARED:
111 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
112 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
113 ssid->proto = 0;
114 break;
115 case WPS_AUTH_WPAPSK:
116 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
117 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
118 ssid->proto = WPA_PROTO_WPA;
119 break;
120 case WPS_AUTH_WPA:
121 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
122 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
123 ssid->proto = WPA_PROTO_WPA;
124 break;
125 case WPS_AUTH_WPA2:
126 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
127 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
128 ssid->proto = WPA_PROTO_RSN;
129 break;
130 case WPS_AUTH_WPA2PSK:
131 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
132 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
133 ssid->proto = WPA_PROTO_RSN;
134 break;
135 }
136
137 if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
138 if (cred->key_len == 2 * PMK_LEN) {
139 if (hexstr2bin((const char *) cred->key, ssid->psk,
140 PMK_LEN)) {
141 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
142 "Key");
143 return -1;
144 }
145 ssid->psk_set = 1;
146 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
147 os_free(ssid->passphrase);
148 ssid->passphrase = os_malloc(cred->key_len + 1);
149 if (ssid->passphrase == NULL)
150 return -1;
151 os_memcpy(ssid->passphrase, cred->key, cred->key_len);
152 ssid->passphrase[cred->key_len] = '\0';
153 wpa_config_update_psk(ssid);
154 } else {
155 wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
156 "length %lu",
157 (unsigned long) cred->key_len);
158 return -1;
159 }
160 }
161
162#ifndef CONFIG_NO_CONFIG_WRITE
163 if (wpa_s->conf->update_config &&
164 wpa_config_write(wpa_s->confname, wpa_s->conf)) {
165 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
166 return -1;
167 }
168#endif /* CONFIG_NO_CONFIG_WRITE */
169
170 return 0;
171}
172
173
174void * wpas_wps_get_cred_cb(void)
175{
176 return wpa_supplicant_wps_cred;
177}
Jouni Malinen116654c2008-11-28 20:32:13 +0200178
179
180int wpas_wps_init(struct wpa_supplicant *wpa_s)
181{
182 struct wps_context *wps;
183
184 wps = os_zalloc(sizeof(*wps));
185 if (wps == NULL)
186 return -1;
187
188 wps->cred_cb = wpa_supplicant_wps_cred;
189 wps->cb_ctx = wpa_s;
190
191 /* TODO: make the device data configurable */
192 wps->dev.device_name = "dev name";
193 wps->dev.manufacturer = "manuf";
194 wps->dev.model_name = "model name";
195 wps->dev.model_number = "model number";
196 wps->dev.serial_number = "12345";
197 wps->dev.categ = WPS_DEV_COMPUTER;
198 wps->dev.oui = WPS_DEV_OUI_WFA;
199 wps->dev.sub_categ = WPS_DEV_COMPUTER_PC;
200
201 wpa_s->wps = wps;
202
203 return 0;
204}
205
206
207void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
208{
209 if (wpa_s->wps == NULL)
210 return;
211
212 os_free(wpa_s->wps->network_key);
213 os_free(wpa_s->wps);
214 wpa_s->wps = NULL;
215}