Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 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" |
Jouni Malinen | b01c18a | 2008-11-29 13:38:03 +0200 | [diff] [blame] | 21 | #include "eap_peer/eap.h" |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 22 | #include "wpa_supplicant_i.h" |
Jouni Malinen | 2d5b792 | 2009-03-26 20:37:05 +0200 | [diff] [blame^] | 23 | #include "driver_i.h" |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 24 | #include "eloop.h" |
Jouni Malinen | 79da74a | 2009-01-01 22:56:52 +0200 | [diff] [blame] | 25 | #include "uuid.h" |
Jouni Malinen | a524f05 | 2008-12-15 20:09:57 +0200 | [diff] [blame] | 26 | #include "wpa_ctrl.h" |
Jouni Malinen | 4766216 | 2009-01-18 12:27:12 +0200 | [diff] [blame] | 27 | #include "ctrl_iface_dbus.h" |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 28 | #include "eap_common/eap_wsc_common.h" |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 29 | #include "blacklist.h" |
Jouni Malinen | 7cc1b6c | 2009-03-05 21:39:39 +0200 | [diff] [blame] | 30 | #include "wpa.h" |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 31 | #include "wps_supplicant.h" |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 32 | #include "dh_groups.h" |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 33 | |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 34 | #define WPS_PIN_SCAN_IGNORE_SEL_REG 3 |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 35 | |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 36 | static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx); |
Jouni Malinen | 469fc3a | 2008-12-19 22:19:41 +0200 | [diff] [blame] | 37 | static void wpas_clear_wps(struct wpa_supplicant *wpa_s); |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 38 | |
| 39 | |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 40 | int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s) |
| 41 | { |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 42 | if (!wpa_s->wps_success && |
| 43 | wpa_s->current_ssid && |
| 44 | eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) { |
| 45 | const u8 *bssid = wpa_s->bssid; |
| 46 | if (is_zero_ether_addr(bssid)) |
| 47 | bssid = wpa_s->pending_bssid; |
| 48 | |
| 49 | wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR |
| 50 | " did not succeed - continue trying to find " |
| 51 | "suitable AP", MAC2STR(bssid)); |
| 52 | wpa_blacklist_add(wpa_s, bssid); |
| 53 | |
| 54 | wpa_supplicant_deauthenticate(wpa_s, |
| 55 | WLAN_REASON_DEAUTH_LEAVING); |
| 56 | wpa_s->reassociate = 1; |
| 57 | wpa_supplicant_req_scan(wpa_s, |
| 58 | wpa_s->blacklist_cleared ? 5 : 0, 0); |
| 59 | wpa_s->blacklist_cleared = 0; |
| 60 | return 1; |
| 61 | } |
| 62 | |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 63 | eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); |
| 64 | |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 65 | if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid && |
| 66 | !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { |
| 67 | wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - " |
| 68 | "try to associate with the received credential"); |
| 69 | wpa_supplicant_deauthenticate(wpa_s, |
| 70 | WLAN_REASON_DEAUTH_LEAVING); |
| 71 | wpa_s->reassociate = 1; |
| 72 | wpa_supplicant_req_scan(wpa_s, 0, 0); |
| 73 | return 1; |
| 74 | } |
| 75 | |
Jouni Malinen | 4766216 | 2009-01-18 12:27:12 +0200 | [diff] [blame] | 76 | if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) { |
| 77 | wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting " |
| 78 | "for external credential processing"); |
| 79 | wpas_clear_wps(wpa_s); |
| 80 | wpa_supplicant_deauthenticate(wpa_s, |
| 81 | WLAN_REASON_DEAUTH_LEAVING); |
| 82 | return 1; |
| 83 | } |
| 84 | |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | |
Jouni Malinen | 7cc1b6c | 2009-03-05 21:39:39 +0200 | [diff] [blame] | 89 | static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s, |
| 90 | struct wpa_ssid *ssid, |
| 91 | const struct wps_credential *cred) |
| 92 | { |
| 93 | struct wpa_driver_capa capa; |
| 94 | size_t i; |
| 95 | struct wpa_scan_res *bss; |
| 96 | const u8 *ie; |
| 97 | struct wpa_ie_data adv; |
| 98 | int wpa2 = 0, ccmp = 0; |
| 99 | |
| 100 | /* |
| 101 | * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in |
| 102 | * case they are configured for mixed mode operation (WPA+WPA2 and |
| 103 | * TKIP+CCMP). Try to use scan results to figure out whether the AP |
| 104 | * actually supports stronger security and select that if the client |
| 105 | * has support for it, too. |
| 106 | */ |
| 107 | |
| 108 | if (wpa_drv_get_capa(wpa_s, &capa)) |
| 109 | return; /* Unknown what driver supports */ |
| 110 | |
| 111 | if (wpa_supplicant_get_scan_results(wpa_s) || wpa_s->scan_res == NULL) |
| 112 | return; /* Could not get scan results for checking advertised |
| 113 | * parameters */ |
| 114 | |
| 115 | for (i = 0; i < wpa_s->scan_res->num; i++) { |
| 116 | bss = wpa_s->scan_res->res[i]; |
| 117 | if (os_memcmp(bss->bssid, cred->mac_addr, ETH_ALEN) != 0) |
| 118 | continue; |
| 119 | ie = wpa_scan_get_ie(bss, WLAN_EID_SSID); |
| 120 | if (ie == NULL) |
| 121 | continue; |
| 122 | if (ie[1] != ssid->ssid_len || ssid->ssid == NULL || |
| 123 | os_memcmp(ie + 2, ssid->ssid, ssid->ssid_len) != 0) |
| 124 | continue; |
| 125 | |
| 126 | wpa_printf(MSG_DEBUG, "WPS: AP found from scan results"); |
| 127 | break; |
| 128 | } |
| 129 | |
| 130 | if (i == wpa_s->scan_res->num) { |
| 131 | wpa_printf(MSG_DEBUG, "WPS: The AP was not found from scan " |
| 132 | "results - use credential as-is"); |
| 133 | return; |
| 134 | } |
| 135 | |
| 136 | ie = wpa_scan_get_ie(bss, WLAN_EID_RSN); |
| 137 | if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) { |
| 138 | wpa2 = 1; |
| 139 | if (adv.pairwise_cipher & WPA_CIPHER_CCMP) |
| 140 | ccmp = 1; |
| 141 | } else { |
| 142 | ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); |
| 143 | if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 && |
| 144 | adv.pairwise_cipher & WPA_CIPHER_CCMP) |
| 145 | ccmp = 1; |
| 146 | } |
| 147 | |
| 148 | if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) && |
| 149 | (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) { |
| 150 | /* |
| 151 | * TODO: This could be the initial AP configuration and the |
| 152 | * Beacon contents could change shortly. Should request a new |
| 153 | * scan and delay addition of the network until the updated |
| 154 | * scan results are available. |
| 155 | */ |
| 156 | wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA " |
| 157 | "support - use credential as-is"); |
| 158 | return; |
| 159 | } |
| 160 | |
| 161 | if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && |
| 162 | (ssid->pairwise_cipher & WPA_CIPHER_TKIP) && |
| 163 | (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) { |
| 164 | wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential " |
| 165 | "based on scan results"); |
| 166 | if (wpa_s->conf->ap_scan == 1) |
| 167 | ssid->pairwise_cipher |= WPA_CIPHER_CCMP; |
| 168 | else |
| 169 | ssid->pairwise_cipher = WPA_CIPHER_CCMP; |
| 170 | } |
| 171 | |
| 172 | if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) && |
| 173 | (ssid->proto & WPA_PROTO_WPA) && |
| 174 | (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) { |
| 175 | wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential " |
| 176 | "based on scan results"); |
| 177 | if (wpa_s->conf->ap_scan == 1) |
| 178 | ssid->proto |= WPA_PROTO_RSN; |
| 179 | else |
| 180 | ssid->proto = WPA_PROTO_RSN; |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | |
Jouni Malinen | bcbbc7a | 2008-11-28 20:02:32 +0200 | [diff] [blame] | 185 | static int wpa_supplicant_wps_cred(void *ctx, |
| 186 | const struct wps_credential *cred) |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 187 | { |
| 188 | struct wpa_supplicant *wpa_s = ctx; |
| 189 | struct wpa_ssid *ssid = wpa_s->current_ssid; |
Andriy Tkachuk | 522b5b6 | 2009-02-18 19:58:44 +0200 | [diff] [blame] | 190 | u8 key_idx = 0; |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 191 | |
Jouni Malinen | 4766216 | 2009-01-18 12:27:12 +0200 | [diff] [blame] | 192 | if ((wpa_s->conf->wps_cred_processing == 1 || |
| 193 | wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) { |
| 194 | size_t blen = cred->cred_attr_len * 2 + 1; |
| 195 | char *buf = os_malloc(blen); |
| 196 | if (buf) { |
| 197 | wpa_snprintf_hex(buf, blen, |
| 198 | cred->cred_attr, cred->cred_attr_len); |
| 199 | wpa_msg(wpa_s, MSG_INFO, "%s%s", |
| 200 | WPS_EVENT_CRED_RECEIVED, buf); |
| 201 | os_free(buf); |
| 202 | } |
| 203 | wpa_supplicant_dbus_notify_wps_cred(wpa_s, cred); |
| 204 | } else |
| 205 | wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED); |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 206 | |
Jouni Malinen | eca6e0a | 2009-01-17 22:17:12 +0200 | [diff] [blame] | 207 | wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", |
| 208 | cred->cred_attr, cred->cred_attr_len); |
| 209 | |
Jouni Malinen | 4766216 | 2009-01-18 12:27:12 +0200 | [diff] [blame] | 210 | if (wpa_s->conf->wps_cred_processing == 1) |
| 211 | return 0; |
| 212 | |
Jouni Malinen | f286077 | 2009-01-17 21:45:51 +0200 | [diff] [blame] | 213 | if (cred->auth_type != WPS_AUTH_OPEN && |
| 214 | cred->auth_type != WPS_AUTH_SHARED && |
| 215 | cred->auth_type != WPS_AUTH_WPAPSK && |
| 216 | cred->auth_type != WPS_AUTH_WPA2PSK) { |
| 217 | wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for " |
| 218 | "unsupported authentication type %d", |
| 219 | cred->auth_type); |
| 220 | return 0; |
| 221 | } |
| 222 | |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 223 | if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { |
| 224 | wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based " |
| 225 | "on the received credential"); |
| 226 | os_free(ssid->eap.identity); |
| 227 | ssid->eap.identity = NULL; |
| 228 | ssid->eap.identity_len = 0; |
| 229 | os_free(ssid->eap.phase1); |
| 230 | ssid->eap.phase1 = NULL; |
| 231 | os_free(ssid->eap.eap_methods); |
| 232 | ssid->eap.eap_methods = NULL; |
| 233 | } else { |
| 234 | wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the " |
| 235 | "received credential"); |
| 236 | ssid = wpa_config_add_network(wpa_s->conf); |
| 237 | if (ssid == NULL) |
| 238 | return -1; |
| 239 | } |
| 240 | |
| 241 | wpa_config_set_network_defaults(ssid); |
| 242 | |
| 243 | os_free(ssid->ssid); |
| 244 | ssid->ssid = os_malloc(cred->ssid_len); |
| 245 | if (ssid->ssid) { |
| 246 | os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len); |
| 247 | ssid->ssid_len = cred->ssid_len; |
| 248 | } |
| 249 | |
| 250 | switch (cred->encr_type) { |
| 251 | case WPS_ENCR_NONE: |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 252 | break; |
| 253 | case WPS_ENCR_WEP: |
Andriy Tkachuk | 4b195a1 | 2009-02-17 10:30:43 +0200 | [diff] [blame] | 254 | if (cred->key_len <= 0) |
| 255 | break; |
| 256 | if (cred->key_len != 5 && cred->key_len != 13 && |
| 257 | cred->key_len != 10 && cred->key_len != 26) { |
| 258 | wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length " |
| 259 | "%lu", (unsigned long) cred->key_len); |
| 260 | return -1; |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 261 | } |
Andriy Tkachuk | 522b5b6 | 2009-02-18 19:58:44 +0200 | [diff] [blame] | 262 | if (cred->key_idx > NUM_WEP_KEYS) { |
Andriy Tkachuk | 4b195a1 | 2009-02-17 10:30:43 +0200 | [diff] [blame] | 263 | wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d", |
| 264 | cred->key_idx); |
| 265 | return -1; |
| 266 | } |
Andriy Tkachuk | 522b5b6 | 2009-02-18 19:58:44 +0200 | [diff] [blame] | 267 | if (cred->key_idx) |
| 268 | key_idx = cred->key_idx - 1; |
Andriy Tkachuk | 4b195a1 | 2009-02-17 10:30:43 +0200 | [diff] [blame] | 269 | if (cred->key_len == 10 || cred->key_len == 26) { |
| 270 | if (hexstr2bin((char *) cred->key, |
| 271 | ssid->wep_key[key_idx], |
| 272 | cred->key_len / 2) < 0) { |
| 273 | wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key " |
| 274 | "%d", key_idx); |
| 275 | return -1; |
| 276 | } |
| 277 | ssid->wep_key_len[key_idx] = cred->key_len / 2; |
| 278 | } else { |
| 279 | os_memcpy(ssid->wep_key[key_idx], cred->key, |
| 280 | cred->key_len); |
| 281 | ssid->wep_key_len[key_idx] = cred->key_len; |
| 282 | } |
| 283 | ssid->wep_tx_keyidx = key_idx; |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 284 | break; |
| 285 | case WPS_ENCR_TKIP: |
| 286 | ssid->pairwise_cipher = WPA_CIPHER_TKIP; |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 287 | break; |
| 288 | case WPS_ENCR_AES: |
| 289 | ssid->pairwise_cipher = WPA_CIPHER_CCMP; |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 290 | break; |
| 291 | } |
| 292 | |
| 293 | switch (cred->auth_type) { |
| 294 | case WPS_AUTH_OPEN: |
| 295 | ssid->auth_alg = WPA_AUTH_ALG_OPEN; |
| 296 | ssid->key_mgmt = WPA_KEY_MGMT_NONE; |
| 297 | ssid->proto = 0; |
| 298 | break; |
| 299 | case WPS_AUTH_SHARED: |
| 300 | ssid->auth_alg = WPA_AUTH_ALG_SHARED; |
| 301 | ssid->key_mgmt = WPA_KEY_MGMT_NONE; |
| 302 | ssid->proto = 0; |
| 303 | break; |
| 304 | case WPS_AUTH_WPAPSK: |
| 305 | ssid->auth_alg = WPA_AUTH_ALG_OPEN; |
| 306 | ssid->key_mgmt = WPA_KEY_MGMT_PSK; |
| 307 | ssid->proto = WPA_PROTO_WPA; |
| 308 | break; |
| 309 | case WPS_AUTH_WPA: |
| 310 | ssid->auth_alg = WPA_AUTH_ALG_OPEN; |
| 311 | ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X; |
| 312 | ssid->proto = WPA_PROTO_WPA; |
| 313 | break; |
| 314 | case WPS_AUTH_WPA2: |
| 315 | ssid->auth_alg = WPA_AUTH_ALG_OPEN; |
| 316 | ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X; |
| 317 | ssid->proto = WPA_PROTO_RSN; |
| 318 | break; |
| 319 | case WPS_AUTH_WPA2PSK: |
| 320 | ssid->auth_alg = WPA_AUTH_ALG_OPEN; |
| 321 | ssid->key_mgmt = WPA_KEY_MGMT_PSK; |
| 322 | ssid->proto = WPA_PROTO_RSN; |
| 323 | break; |
| 324 | } |
| 325 | |
| 326 | if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) { |
| 327 | if (cred->key_len == 2 * PMK_LEN) { |
| 328 | if (hexstr2bin((const char *) cred->key, ssid->psk, |
| 329 | PMK_LEN)) { |
| 330 | wpa_printf(MSG_ERROR, "WPS: Invalid Network " |
| 331 | "Key"); |
| 332 | return -1; |
| 333 | } |
| 334 | ssid->psk_set = 1; |
| 335 | } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) { |
| 336 | os_free(ssid->passphrase); |
| 337 | ssid->passphrase = os_malloc(cred->key_len + 1); |
| 338 | if (ssid->passphrase == NULL) |
| 339 | return -1; |
| 340 | os_memcpy(ssid->passphrase, cred->key, cred->key_len); |
| 341 | ssid->passphrase[cred->key_len] = '\0'; |
| 342 | wpa_config_update_psk(ssid); |
| 343 | } else { |
| 344 | wpa_printf(MSG_ERROR, "WPS: Invalid Network Key " |
| 345 | "length %lu", |
| 346 | (unsigned long) cred->key_len); |
| 347 | return -1; |
| 348 | } |
| 349 | } |
| 350 | |
Jouni Malinen | 7cc1b6c | 2009-03-05 21:39:39 +0200 | [diff] [blame] | 351 | wpas_wps_security_workaround(wpa_s, ssid, cred); |
| 352 | |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 353 | #ifndef CONFIG_NO_CONFIG_WRITE |
| 354 | if (wpa_s->conf->update_config && |
| 355 | wpa_config_write(wpa_s->confname, wpa_s->conf)) { |
| 356 | wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration"); |
| 357 | return -1; |
| 358 | } |
| 359 | #endif /* CONFIG_NO_CONFIG_WRITE */ |
| 360 | |
| 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | |
Jouni Malinen | 4b68290 | 2008-12-18 21:58:42 +0200 | [diff] [blame] | 365 | static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s, |
| 366 | struct wps_event_m2d *m2d) |
| 367 | { |
| 368 | wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D |
| 369 | "dev_password_id=%d config_error=%d", |
| 370 | m2d->dev_password_id, m2d->config_error); |
| 371 | } |
| 372 | |
| 373 | |
Jouni Malinen | 469fc3a | 2008-12-19 22:19:41 +0200 | [diff] [blame] | 374 | static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s, |
| 375 | struct wps_event_fail *fail) |
| 376 | { |
| 377 | wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg); |
| 378 | wpas_clear_wps(wpa_s); |
| 379 | } |
| 380 | |
| 381 | |
Jouni Malinen | ad5302a | 2008-12-19 22:34:18 +0200 | [diff] [blame] | 382 | static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s) |
| 383 | { |
| 384 | wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS); |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 385 | wpa_s->wps_success = 1; |
Jouni Malinen | ad5302a | 2008-12-19 22:34:18 +0200 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | |
Jouni Malinen | 4b68290 | 2008-12-18 21:58:42 +0200 | [diff] [blame] | 389 | static void wpa_supplicant_wps_event(void *ctx, enum wps_event event, |
| 390 | union wps_event_data *data) |
| 391 | { |
| 392 | struct wpa_supplicant *wpa_s = ctx; |
| 393 | switch (event) { |
| 394 | case WPS_EV_M2D: |
| 395 | wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d); |
| 396 | break; |
Jouni Malinen | 469fc3a | 2008-12-19 22:19:41 +0200 | [diff] [blame] | 397 | case WPS_EV_FAIL: |
| 398 | wpa_supplicant_wps_event_fail(wpa_s, &data->fail); |
| 399 | break; |
Jouni Malinen | ad5302a | 2008-12-19 22:34:18 +0200 | [diff] [blame] | 400 | case WPS_EV_SUCCESS: |
| 401 | wpa_supplicant_wps_event_success(wpa_s); |
| 402 | break; |
Jouni Malinen | 3b2cf80 | 2009-01-23 21:57:43 +0200 | [diff] [blame] | 403 | case WPS_EV_PWD_AUTH_FAIL: |
| 404 | break; |
Jouni Malinen | 4b68290 | 2008-12-18 21:58:42 +0200 | [diff] [blame] | 405 | } |
| 406 | } |
| 407 | |
| 408 | |
Jouni Malinen | f90c86d | 2009-01-03 19:50:49 +0200 | [diff] [blame] | 409 | enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid) |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 410 | { |
Jouni Malinen | b01c18a | 2008-11-29 13:38:03 +0200 | [diff] [blame] | 411 | if (eap_is_wps_pbc_enrollee(&ssid->eap) || |
| 412 | eap_is_wps_pin_enrollee(&ssid->eap)) |
| 413 | return WPS_REQ_ENROLLEE; |
| 414 | else |
| 415 | return WPS_REQ_REGISTRAR; |
Jouni Malinen | fa201b6 | 2008-11-28 19:46:22 +0200 | [diff] [blame] | 416 | } |
Jouni Malinen | 116654c | 2008-11-28 20:32:13 +0200 | [diff] [blame] | 417 | |
| 418 | |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 419 | static void wpas_clear_wps(struct wpa_supplicant *wpa_s) |
| 420 | { |
| 421 | int id; |
| 422 | struct wpa_ssid *ssid; |
| 423 | |
| 424 | eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); |
| 425 | |
| 426 | /* Remove any existing WPS network from configuration */ |
| 427 | ssid = wpa_s->conf->ssid; |
| 428 | while (ssid) { |
Jouni Malinen | f047720 | 2008-12-18 01:06:06 +0200 | [diff] [blame] | 429 | if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { |
| 430 | if (ssid == wpa_s->current_ssid) |
| 431 | wpa_s->current_ssid = NULL; |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 432 | id = ssid->id; |
Jouni Malinen | f047720 | 2008-12-18 01:06:06 +0200 | [diff] [blame] | 433 | } else |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 434 | id = -1; |
| 435 | ssid = ssid->next; |
| 436 | if (id >= 0) |
| 437 | wpa_config_remove_network(wpa_s->conf, id); |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | |
| 442 | static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx) |
| 443 | { |
| 444 | struct wpa_supplicant *wpa_s = eloop_ctx; |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 445 | wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed " |
| 446 | "out"); |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 447 | wpas_clear_wps(wpa_s); |
| 448 | } |
| 449 | |
| 450 | |
| 451 | static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s, |
| 452 | int registrar, const u8 *bssid) |
| 453 | { |
| 454 | struct wpa_ssid *ssid; |
| 455 | |
| 456 | ssid = wpa_config_add_network(wpa_s->conf); |
| 457 | if (ssid == NULL) |
| 458 | return NULL; |
| 459 | wpa_config_set_network_defaults(ssid); |
| 460 | if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 || |
| 461 | wpa_config_set(ssid, "eap", "WSC", 0) < 0 || |
| 462 | wpa_config_set(ssid, "identity", registrar ? |
| 463 | "\"" WSC_ID_REGISTRAR "\"" : |
| 464 | "\"" WSC_ID_ENROLLEE "\"", 0) < 0) { |
| 465 | wpa_config_remove_network(wpa_s->conf, ssid->id); |
| 466 | return NULL; |
| 467 | } |
| 468 | |
| 469 | if (bssid) { |
| 470 | size_t i; |
| 471 | struct wpa_scan_res *res; |
| 472 | |
| 473 | os_memcpy(ssid->bssid, bssid, ETH_ALEN); |
Jouni Malinen | 24c23d1 | 2008-12-20 22:55:02 +0200 | [diff] [blame] | 474 | ssid->bssid_set = 1; |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 475 | |
| 476 | /* Try to get SSID from scan results */ |
| 477 | if (wpa_s->scan_res == NULL && |
| 478 | wpa_supplicant_get_scan_results(wpa_s) < 0) |
| 479 | return ssid; /* Could not find any scan results */ |
| 480 | |
| 481 | for (i = 0; i < wpa_s->scan_res->num; i++) { |
| 482 | const u8 *ie; |
| 483 | |
| 484 | res = wpa_s->scan_res->res[i]; |
| 485 | if (os_memcmp(bssid, res->bssid, ETH_ALEN) != 0) |
| 486 | continue; |
| 487 | |
| 488 | ie = wpa_scan_get_ie(res, WLAN_EID_SSID); |
| 489 | if (ie == NULL) |
| 490 | break; |
| 491 | os_free(ssid->ssid); |
| 492 | ssid->ssid = os_malloc(ie[1]); |
| 493 | if (ssid->ssid == NULL) |
| 494 | break; |
| 495 | os_memcpy(ssid->ssid, ie + 2, ie[1]); |
| 496 | ssid->ssid_len = ie[1]; |
| 497 | break; |
| 498 | } |
| 499 | } |
| 500 | |
| 501 | return ssid; |
| 502 | } |
| 503 | |
| 504 | |
| 505 | static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s, |
| 506 | struct wpa_ssid *selected) |
| 507 | { |
| 508 | struct wpa_ssid *ssid; |
| 509 | |
| 510 | /* Mark all other networks disabled and trigger reassociation */ |
| 511 | ssid = wpa_s->conf->ssid; |
| 512 | while (ssid) { |
| 513 | ssid->disabled = ssid != selected; |
| 514 | ssid = ssid->next; |
| 515 | } |
| 516 | wpa_s->disconnected = 0; |
| 517 | wpa_s->reassociate = 1; |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 518 | wpa_s->scan_runs = 0; |
| 519 | wpa_s->wps_success = 0; |
| 520 | wpa_s->blacklist_cleared = 0; |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 521 | wpa_supplicant_req_scan(wpa_s, 0, 0); |
| 522 | } |
| 523 | |
| 524 | |
| 525 | int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid) |
| 526 | { |
| 527 | struct wpa_ssid *ssid; |
| 528 | wpas_clear_wps(wpa_s); |
| 529 | ssid = wpas_wps_add_network(wpa_s, 0, bssid); |
| 530 | if (ssid == NULL) |
| 531 | return -1; |
| 532 | wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0); |
| 533 | eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, |
| 534 | wpa_s, NULL); |
| 535 | wpas_wps_reassoc(wpa_s, ssid); |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | |
| 540 | int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, |
| 541 | const char *pin) |
| 542 | { |
| 543 | struct wpa_ssid *ssid; |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 544 | char val[128]; |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 545 | unsigned int rpin = 0; |
| 546 | |
| 547 | wpas_clear_wps(wpa_s); |
| 548 | ssid = wpas_wps_add_network(wpa_s, 0, bssid); |
| 549 | if (ssid == NULL) |
| 550 | return -1; |
| 551 | if (pin) |
| 552 | os_snprintf(val, sizeof(val), "\"pin=%s\"", pin); |
| 553 | else { |
| 554 | rpin = wps_generate_pin(); |
| 555 | os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin); |
| 556 | } |
| 557 | wpa_config_set(ssid, "phase1", val, 0); |
| 558 | eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, |
| 559 | wpa_s, NULL); |
| 560 | wpas_wps_reassoc(wpa_s, ssid); |
| 561 | return rpin; |
| 562 | } |
| 563 | |
| 564 | |
Jouni Malinen | 116f7bb | 2009-02-26 22:10:21 +0200 | [diff] [blame] | 565 | #ifdef CONFIG_WPS_OOB |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 566 | int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type, |
Masashi Honma | e1ee6b6 | 2009-03-06 16:16:22 +0200 | [diff] [blame] | 567 | char *path, char *method, char *name) |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 568 | { |
| 569 | struct wps_context *wps = wpa_s->wps; |
Jouni Malinen | 7cbf51b | 2009-02-26 22:07:55 +0200 | [diff] [blame] | 570 | struct oob_device_data *oob_dev; |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 571 | |
Jouni Malinen | 7cbf51b | 2009-02-26 22:07:55 +0200 | [diff] [blame] | 572 | oob_dev = wps_get_oob_device(device_type); |
| 573 | if (oob_dev == NULL) |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 574 | return -1; |
Jouni Malinen | 7cbf51b | 2009-02-26 22:07:55 +0200 | [diff] [blame] | 575 | oob_dev->device_path = path; |
Masashi Honma | e1ee6b6 | 2009-03-06 16:16:22 +0200 | [diff] [blame] | 576 | oob_dev->device_name = name; |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 577 | wps->oob_conf.oob_method = wps_get_oob_method(method); |
| 578 | |
Jouni Malinen | d5e2b2d | 2009-02-26 22:09:35 +0200 | [diff] [blame] | 579 | if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) { |
| 580 | /* |
| 581 | * Use pre-configured DH keys in order to be able to write the |
| 582 | * key hash into the OOB file. |
| 583 | */ |
| 584 | wpabuf_free(wps->dh_pubkey); |
| 585 | wpabuf_free(wps->dh_privkey); |
| 586 | wps->dh_privkey = NULL; |
| 587 | wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP), |
| 588 | &wps->dh_privkey); |
| 589 | wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192); |
| 590 | if (wps->dh_pubkey == NULL) { |
| 591 | wpa_printf(MSG_ERROR, "WPS: Failed to initialize " |
| 592 | "Diffie-Hellman handshake"); |
| 593 | return -1; |
| 594 | } |
| 595 | } |
| 596 | |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 597 | if (wps->oob_conf.oob_method == OOB_METHOD_CRED) |
| 598 | wpas_clear_wps(wpa_s); |
| 599 | |
Jouni Malinen | 7cbf51b | 2009-02-26 22:07:55 +0200 | [diff] [blame] | 600 | if (wps_process_oob(wps, oob_dev, 0) < 0) |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 601 | return -1; |
| 602 | |
| 603 | if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E || |
| 604 | wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) && |
| 605 | wpas_wps_start_pin(wpa_s, NULL, |
| 606 | wpabuf_head(wps->oob_conf.dev_password)) < 0) |
| 607 | return -1; |
| 608 | |
| 609 | return 0; |
| 610 | } |
Jouni Malinen | 116f7bb | 2009-02-26 22:10:21 +0200 | [diff] [blame] | 611 | #endif /* CONFIG_WPS_OOB */ |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 612 | |
| 613 | |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 614 | int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid, |
| 615 | const char *pin) |
| 616 | { |
| 617 | struct wpa_ssid *ssid; |
| 618 | char val[30]; |
| 619 | |
| 620 | if (!pin) |
| 621 | return -1; |
| 622 | wpas_clear_wps(wpa_s); |
| 623 | ssid = wpas_wps_add_network(wpa_s, 1, bssid); |
| 624 | if (ssid == NULL) |
| 625 | return -1; |
| 626 | os_snprintf(val, sizeof(val), "\"pin=%s\"", pin); |
| 627 | wpa_config_set(ssid, "phase1", val, 0); |
| 628 | eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, |
| 629 | wpa_s, NULL); |
| 630 | wpas_wps_reassoc(wpa_s, ssid); |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | |
Jouni Malinen | c5adf52 | 2009-01-03 20:18:35 +0200 | [diff] [blame] | 635 | static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk, |
| 636 | size_t psk_len) |
| 637 | { |
| 638 | wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for " |
| 639 | "STA " MACSTR, MAC2STR(mac_addr)); |
| 640 | wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); |
| 641 | |
| 642 | /* TODO */ |
| 643 | |
| 644 | return 0; |
| 645 | } |
| 646 | |
| 647 | |
| 648 | static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, |
| 649 | const struct wps_device_data *dev) |
| 650 | { |
| 651 | char uuid[40], txt[400]; |
| 652 | int len; |
| 653 | if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) |
| 654 | return; |
| 655 | wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid); |
| 656 | len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR |
| 657 | " [%s|%s|%s|%s|%s|%d-%08X-%d]", |
| 658 | uuid, MAC2STR(dev->mac_addr), dev->device_name, |
| 659 | dev->manufacturer, dev->model_name, |
| 660 | dev->model_number, dev->serial_number, |
| 661 | dev->categ, dev->oui, dev->sub_categ); |
| 662 | if (len > 0 && len < (int) sizeof(txt)) |
| 663 | wpa_printf(MSG_INFO, "%s", txt); |
| 664 | } |
| 665 | |
| 666 | |
Jouni Malinen | 116654c | 2008-11-28 20:32:13 +0200 | [diff] [blame] | 667 | int wpas_wps_init(struct wpa_supplicant *wpa_s) |
| 668 | { |
| 669 | struct wps_context *wps; |
Jouni Malinen | c5adf52 | 2009-01-03 20:18:35 +0200 | [diff] [blame] | 670 | struct wps_registrar_config rcfg; |
Jouni Malinen | 116654c | 2008-11-28 20:32:13 +0200 | [diff] [blame] | 671 | |
| 672 | wps = os_zalloc(sizeof(*wps)); |
| 673 | if (wps == NULL) |
| 674 | return -1; |
| 675 | |
| 676 | wps->cred_cb = wpa_supplicant_wps_cred; |
Jouni Malinen | 4b68290 | 2008-12-18 21:58:42 +0200 | [diff] [blame] | 677 | wps->event_cb = wpa_supplicant_wps_event; |
Jouni Malinen | 116654c | 2008-11-28 20:32:13 +0200 | [diff] [blame] | 678 | wps->cb_ctx = wpa_s; |
| 679 | |
Jouni Malinen | 3c0b7aa | 2008-12-13 17:20:46 +0200 | [diff] [blame] | 680 | wps->dev.device_name = wpa_s->conf->device_name; |
| 681 | wps->dev.manufacturer = wpa_s->conf->manufacturer; |
| 682 | wps->dev.model_name = wpa_s->conf->model_name; |
| 683 | wps->dev.model_number = wpa_s->conf->model_number; |
| 684 | wps->dev.serial_number = wpa_s->conf->serial_number; |
| 685 | if (wpa_s->conf->device_type) { |
| 686 | char *pos; |
| 687 | u8 oui[4]; |
| 688 | /* <categ>-<OUI>-<subcateg> */ |
| 689 | wps->dev.categ = atoi(wpa_s->conf->device_type); |
| 690 | pos = os_strchr(wpa_s->conf->device_type, '-'); |
| 691 | if (pos == NULL) { |
| 692 | wpa_printf(MSG_ERROR, "WPS: Invalid device_type"); |
| 693 | os_free(wps); |
| 694 | return -1; |
| 695 | } |
| 696 | pos++; |
| 697 | if (hexstr2bin(pos, oui, 4)) { |
| 698 | wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI"); |
| 699 | os_free(wps); |
| 700 | return -1; |
| 701 | } |
| 702 | wps->dev.oui = WPA_GET_BE32(oui); |
| 703 | pos = os_strchr(pos, '-'); |
| 704 | if (pos == NULL) { |
| 705 | wpa_printf(MSG_ERROR, "WPS: Invalid device_type"); |
| 706 | os_free(wps); |
| 707 | return -1; |
| 708 | } |
| 709 | pos++; |
| 710 | wps->dev.sub_categ = atoi(pos); |
| 711 | } |
| 712 | wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); |
| 713 | wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */ |
Jouni Malinen | 398cfbf | 2008-11-28 20:44:47 +0200 | [diff] [blame] | 714 | os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN); |
Jouni Malinen | 79da74a | 2009-01-01 22:56:52 +0200 | [diff] [blame] | 715 | if (is_nil_uuid(wpa_s->conf->uuid)) { |
| 716 | uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid); |
| 717 | wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address", |
| 718 | wps->uuid, WPS_UUID_LEN); |
| 719 | } else |
| 720 | os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN); |
Jouni Malinen | 116654c | 2008-11-28 20:32:13 +0200 | [diff] [blame] | 721 | |
Jouni Malinen | c5adf52 | 2009-01-03 20:18:35 +0200 | [diff] [blame] | 722 | wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; |
| 723 | wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; |
| 724 | |
| 725 | os_memset(&rcfg, 0, sizeof(rcfg)); |
| 726 | rcfg.new_psk_cb = wpas_wps_new_psk_cb; |
| 727 | rcfg.pin_needed_cb = wpas_wps_pin_needed_cb; |
| 728 | rcfg.cb_ctx = wpa_s; |
| 729 | |
| 730 | wps->registrar = wps_registrar_init(wps, &rcfg); |
| 731 | if (wps->registrar == NULL) { |
| 732 | wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar"); |
| 733 | os_free(wps); |
| 734 | return -1; |
| 735 | } |
| 736 | |
Jouni Malinen | 116654c | 2008-11-28 20:32:13 +0200 | [diff] [blame] | 737 | wpa_s->wps = wps; |
| 738 | |
| 739 | return 0; |
| 740 | } |
| 741 | |
| 742 | |
| 743 | void wpas_wps_deinit(struct wpa_supplicant *wpa_s) |
| 744 | { |
Jouni Malinen | fcc60db | 2008-11-29 20:59:45 +0200 | [diff] [blame] | 745 | eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); |
| 746 | |
Jouni Malinen | 116654c | 2008-11-28 20:32:13 +0200 | [diff] [blame] | 747 | if (wpa_s->wps == NULL) |
| 748 | return; |
| 749 | |
Jouni Malinen | c5adf52 | 2009-01-03 20:18:35 +0200 | [diff] [blame] | 750 | wps_registrar_deinit(wpa_s->wps->registrar); |
Masashi Honma | 46bdb83 | 2009-02-26 21:57:38 +0200 | [diff] [blame] | 751 | wpabuf_free(wpa_s->wps->dh_pubkey); |
| 752 | wpabuf_free(wpa_s->wps->dh_privkey); |
| 753 | wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash); |
| 754 | wpabuf_free(wpa_s->wps->oob_conf.dev_password); |
Jouni Malinen | 116654c | 2008-11-28 20:32:13 +0200 | [diff] [blame] | 755 | os_free(wpa_s->wps->network_key); |
| 756 | os_free(wpa_s->wps); |
| 757 | wpa_s->wps = NULL; |
| 758 | } |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 759 | |
| 760 | |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 761 | int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s, |
| 762 | struct wpa_ssid *ssid, struct wpa_scan_res *bss) |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 763 | { |
| 764 | struct wpabuf *wps_ie; |
| 765 | |
| 766 | if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) |
| 767 | return -1; |
| 768 | |
| 769 | wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); |
| 770 | if (eap_is_wps_pbc_enrollee(&ssid->eap)) { |
| 771 | if (!wps_ie) { |
| 772 | wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); |
| 773 | return 0; |
| 774 | } |
| 775 | |
| 776 | if (!wps_is_selected_pbc_registrar(wps_ie)) { |
| 777 | wpa_printf(MSG_DEBUG, " skip - WPS AP " |
| 778 | "without active PBC Registrar"); |
| 779 | wpabuf_free(wps_ie); |
| 780 | return 0; |
| 781 | } |
| 782 | |
| 783 | /* TODO: overlap detection */ |
| 784 | wpa_printf(MSG_DEBUG, " selected based on WPS IE " |
| 785 | "(Active PBC)"); |
| 786 | wpabuf_free(wps_ie); |
| 787 | return 1; |
| 788 | } |
| 789 | |
| 790 | if (eap_is_wps_pin_enrollee(&ssid->eap)) { |
| 791 | if (!wps_ie) { |
| 792 | wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); |
| 793 | return 0; |
| 794 | } |
| 795 | |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 796 | /* |
| 797 | * Start with WPS APs that advertise active PIN Registrar and |
| 798 | * allow any WPS AP after third scan since some APs do not set |
| 799 | * Selected Registrar attribute properly when using external |
| 800 | * Registrar. |
| 801 | */ |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 802 | if (!wps_is_selected_pin_registrar(wps_ie)) { |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 803 | if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) { |
| 804 | wpa_printf(MSG_DEBUG, " skip - WPS AP " |
| 805 | "without active PIN Registrar"); |
| 806 | wpabuf_free(wps_ie); |
| 807 | return 0; |
| 808 | } |
| 809 | wpa_printf(MSG_DEBUG, " selected based on WPS IE"); |
| 810 | } else { |
| 811 | wpa_printf(MSG_DEBUG, " selected based on WPS IE " |
| 812 | "(Active PIN)"); |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 813 | } |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 814 | wpabuf_free(wps_ie); |
| 815 | return 1; |
| 816 | } |
| 817 | |
| 818 | if (wps_ie) { |
| 819 | wpa_printf(MSG_DEBUG, " selected based on WPS IE"); |
| 820 | wpabuf_free(wps_ie); |
| 821 | return 1; |
| 822 | } |
| 823 | |
| 824 | return -1; |
| 825 | } |
| 826 | |
| 827 | |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 828 | int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s, |
| 829 | struct wpa_ssid *ssid, |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 830 | struct wpa_scan_res *bss) |
| 831 | { |
| 832 | struct wpabuf *wps_ie = NULL; |
| 833 | int ret = 0; |
| 834 | |
| 835 | if (eap_is_wps_pbc_enrollee(&ssid->eap)) { |
| 836 | wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); |
| 837 | if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) { |
| 838 | /* allow wildcard SSID for WPS PBC */ |
| 839 | ret = 1; |
| 840 | } |
| 841 | } else if (eap_is_wps_pin_enrollee(&ssid->eap)) { |
| 842 | wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); |
Jouni Malinen | a609915 | 2009-01-23 13:10:58 +0200 | [diff] [blame] | 843 | if (wps_ie && |
| 844 | (wps_is_selected_pin_registrar(wps_ie) || |
| 845 | wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) { |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 846 | /* allow wildcard SSID for WPS PIN */ |
| 847 | ret = 1; |
| 848 | } |
| 849 | } |
| 850 | |
Jouni Malinen | 24c23d1 | 2008-12-20 22:55:02 +0200 | [diff] [blame] | 851 | if (!ret && ssid->bssid_set && |
| 852 | os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) { |
| 853 | /* allow wildcard SSID due to hardcoded BSSID match */ |
| 854 | ret = 1; |
| 855 | } |
| 856 | |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 857 | wpabuf_free(wps_ie); |
| 858 | |
| 859 | return ret; |
| 860 | } |
| 861 | |
| 862 | |
| 863 | int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s, |
| 864 | struct wpa_scan_res *selected, |
| 865 | struct wpa_ssid *ssid) |
| 866 | { |
| 867 | const u8 *sel_uuid, *uuid; |
| 868 | size_t i; |
| 869 | struct wpabuf *wps_ie; |
| 870 | int ret = 0; |
| 871 | |
| 872 | if (!eap_is_wps_pbc_enrollee(&ssid->eap)) |
| 873 | return 0; |
| 874 | |
| 875 | /* Make sure that only one AP is in active PBC mode */ |
| 876 | wps_ie = wpa_scan_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE); |
| 877 | if (wps_ie) |
| 878 | sel_uuid = wps_get_uuid_e(wps_ie); |
| 879 | else |
| 880 | sel_uuid = NULL; |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 881 | |
| 882 | for (i = 0; i < wpa_s->scan_res->num; i++) { |
| 883 | struct wpa_scan_res *bss = wpa_s->scan_res->res[i]; |
| 884 | struct wpabuf *ie; |
| 885 | if (bss == selected) |
| 886 | continue; |
| 887 | ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); |
| 888 | if (!ie) |
| 889 | continue; |
| 890 | if (!wps_is_selected_pbc_registrar(ie)) { |
| 891 | wpabuf_free(ie); |
| 892 | continue; |
| 893 | } |
| 894 | uuid = wps_get_uuid_e(ie); |
Jouni Malinen | 44cd430 | 2008-12-21 17:28:01 +0200 | [diff] [blame] | 895 | if (sel_uuid == NULL || uuid == NULL || |
| 896 | os_memcmp(sel_uuid, uuid, 16) != 0) { |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 897 | ret = 1; /* PBC overlap */ |
| 898 | wpabuf_free(ie); |
| 899 | break; |
| 900 | } |
| 901 | |
| 902 | /* TODO: verify that this is reasonable dual-band situation */ |
Jouni Malinen | 484957a | 2008-12-15 19:50:53 +0200 | [diff] [blame] | 903 | |
| 904 | wpabuf_free(ie); |
Jouni Malinen | 351f09a | 2008-11-29 22:06:34 +0200 | [diff] [blame] | 905 | } |
| 906 | |
| 907 | wpabuf_free(wps_ie); |
| 908 | |
| 909 | return ret; |
| 910 | } |
Jouni Malinen | a524f05 | 2008-12-15 20:09:57 +0200 | [diff] [blame] | 911 | |
| 912 | |
| 913 | void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s) |
| 914 | { |
| 915 | size_t i; |
| 916 | |
| 917 | if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED) |
| 918 | return; |
| 919 | |
| 920 | for (i = 0; i < wpa_s->scan_res->num; i++) { |
| 921 | struct wpa_scan_res *bss = wpa_s->scan_res->res[i]; |
| 922 | struct wpabuf *ie; |
| 923 | ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); |
| 924 | if (!ie) |
| 925 | continue; |
| 926 | if (wps_is_selected_pbc_registrar(ie)) |
| 927 | wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC); |
| 928 | else if (wps_is_selected_pin_registrar(ie)) |
| 929 | wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN); |
| 930 | else |
| 931 | wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE); |
| 932 | wpabuf_free(ie); |
| 933 | break; |
| 934 | } |
| 935 | } |
Jouni Malinen | 24c23d1 | 2008-12-20 22:55:02 +0200 | [diff] [blame] | 936 | |
| 937 | |
| 938 | int wpas_wps_searching(struct wpa_supplicant *wpa_s) |
| 939 | { |
| 940 | struct wpa_ssid *ssid; |
| 941 | |
| 942 | for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { |
| 943 | if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled) |
| 944 | return 1; |
| 945 | } |
| 946 | |
| 947 | return 0; |
| 948 | } |