git.maemo.org Git - wpasupplicant/blob - wpa_supplicant/wps_supplicant.c

   1 /*
   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
  27 int 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
  44 static int wpa_supplicant_wps_cred(void *ctx,
  45                                    const struct wps_credential *cred)
  46 {
  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
 174 void * wpas_wps_get_cred_cb(void)
 175 {
 176         return wpa_supplicant_wps_cred;
 177 }
 178
 179
 180 int 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         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
 201         os_memcpy(wps->uuid, wpa_s->conf->uuid, 16);
 202
 203         wpa_s->wps = wps;
 204
 205         return 0;
 206 }
 207
 208
 209 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
 210 {
 211         if (wpa_s->wps == NULL)
 212                 return;
 213
 214         os_free(wpa_s->wps->network_key);
 215         os_free(wpa_s->wps);
 216         wpa_s->wps = NULL;
 217 }