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WPS: Documented wps_er_pin MAC address option
[thirdparty/hostap.git] / hostapd / ctrl_iface.c
CommitLineData
6fc6879b
JM		 1/*
2 * hostapd / UNIX domain socket -based control interface
6226e38d 3 * Copyright (c) 2004-2009, Jouni Malinen <j@w1.fi>
6fc6879b
JM		 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
6226e38d 15#include "utils/includes.h"
6fc6879b
JM		 16
17#ifndef CONFIG_NATIVE_WINDOWS
18
19#include <sys/un.h>
20#include <sys/stat.h>
75864b7f 21#include <stddef.h>
6fc6879b 22
6226e38d
JM		 23#include "utils/common.h"
24#include "utils/eloop.h"
81f4f619 25#include "common/ieee802_11_defs.h"
1057d78e 26#include "drivers/driver.h"
6fc6879b 27#include "radius/radius_client.h"
1057d78e 28#include "ap/hostapd.h"
6226e38d 29#include "ap/ap_config.h"
1057d78e 30#include "ap/ieee802_1x.h"
6226e38d 31#include "ap/wpa_auth.h"
1057d78e
JM		 32#include "ap/ieee802_11.h"
33#include "ap/sta_info.h"
34#include "ap/accounting.h"
32da61d9 35#include "ap/wps_hostapd.h"
0e2d35c6 36#include "ap/ctrl_iface_ap.h"
b4e34f2f 37#include "wps/wps_defs.h"
3981cb3c 38#include "wps/wps.h"
6fc6879b 39#include "ctrl_iface.h"
6fc6879b
JM		 40
41
42struct wpa_ctrl_dst {
43 struct wpa_ctrl_dst *next;
44 struct sockaddr_un addr;
45 socklen_t addrlen;
46 int debug_level;
47 int errors;
48};
49
50
42d16805
JM		 51static void hostapd_ctrl_iface_send(struct hostapd_data *hapd, int level,
52 const char *buf, size_t len);
53
54
6fc6879b
JM		 55static int hostapd_ctrl_iface_attach(struct hostapd_data *hapd,
56 struct sockaddr_un *from,
57 socklen_t fromlen)
58{
59 struct wpa_ctrl_dst *dst;
60
61 dst = os_zalloc(sizeof(*dst));
62 if (dst == NULL)
63 return -1;
64 os_memcpy(&dst->addr, from, sizeof(struct sockaddr_un));
65 dst->addrlen = fromlen;
66 dst->debug_level = MSG_INFO;
67 dst->next = hapd->ctrl_dst;
68 hapd->ctrl_dst = dst;
69 wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor attached",
75864b7f
JM		 70 (u8 *) from->sun_path,
71 fromlen - offsetof(struct sockaddr_un, sun_path));
6fc6879b
JM		 72 return 0;
73}
74
75
76static int hostapd_ctrl_iface_detach(struct hostapd_data *hapd,
77 struct sockaddr_un *from,
78 socklen_t fromlen)
79{
80 struct wpa_ctrl_dst *dst, *prev = NULL;
81
82 dst = hapd->ctrl_dst;
83 while (dst) {
84 if (fromlen == dst->addrlen &&
75864b7f
JM		 85 os_memcmp(from->sun_path, dst->addr.sun_path,
86 fromlen - offsetof(struct sockaddr_un, sun_path))
87 == 0) {
6fc6879b
JM		 88 if (prev == NULL)
89 hapd->ctrl_dst = dst->next;
90 else
91 prev->next = dst->next;
92 os_free(dst);
93 wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor detached",
75864b7f
JM		 94 (u8 *) from->sun_path,
95 fromlen -
96 offsetof(struct sockaddr_un, sun_path));
6fc6879b
JM		 97 return 0;
98 }
99 prev = dst;
100 dst = dst->next;
101 }
102 return -1;
103}
104
105
106static int hostapd_ctrl_iface_level(struct hostapd_data *hapd,
107 struct sockaddr_un *from,
108 socklen_t fromlen,
109 char *level)
110{
111 struct wpa_ctrl_dst *dst;
112
113 wpa_printf(MSG_DEBUG, "CTRL_IFACE LEVEL %s", level);
114
115 dst = hapd->ctrl_dst;
116 while (dst) {
117 if (fromlen == dst->addrlen &&
75864b7f
JM		 118 os_memcmp(from->sun_path, dst->addr.sun_path,
119 fromlen - offsetof(struct sockaddr_un, sun_path))
120 == 0) {
6fc6879b 121 wpa_hexdump(MSG_DEBUG, "CTRL_IFACE changed monitor "
75864b7f
JM		 122 "level", (u8 *) from->sun_path, fromlen -
123 offsetof(struct sockaddr_un, sun_path));
6fc6879b
JM		 124 dst->debug_level = atoi(level);
125 return 0;
126 }
127 dst = dst->next;
128 }
129
130 return -1;
131}
132
133
6fc6879b
JM		 134static int hostapd_ctrl_iface_new_sta(struct hostapd_data *hapd,
135 const char *txtaddr)
136{
137 u8 addr[ETH_ALEN];
138 struct sta_info *sta;
139
140 wpa_printf(MSG_DEBUG, "CTRL_IFACE NEW_STA %s", txtaddr);
141
142 if (hwaddr_aton(txtaddr, addr))
143 return -1;
144
145 sta = ap_get_sta(hapd, addr);
146 if (sta)
147 return 0;
148
149 wpa_printf(MSG_DEBUG, "Add new STA " MACSTR " based on ctrl_iface "
150 "notification", MAC2STR(addr));
151 sta = ap_sta_add(hapd, addr);
152 if (sta == NULL)
153 return -1;
154
155 hostapd_new_assoc_sta(hapd, sta, 0);
6fc6879b
JM		 156 return 0;
157}
158
159
962473c1
JM		 160#ifdef CONFIG_P2P_MANAGER
161static int p2p_manager_disconnect(struct hostapd_data *hapd, u16 stype,
162 u8 minor_reason_code, const u8 *addr)
163{
164 struct ieee80211_mgmt *mgmt;
165 int ret;
166 u8 *pos;
167
168 if (hapd->driver->send_frame == NULL)
169 return -1;
170
171 mgmt = os_zalloc(sizeof(*mgmt) + 100);
172 if (mgmt == NULL)
173 return -1;
174
175 wpa_printf(MSG_DEBUG, "P2P: Disconnect STA " MACSTR " with minor "
176 "reason code %u (stype=%u)",
177 MAC2STR(addr), minor_reason_code, stype);
178
179 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, stype);
180 os_memcpy(mgmt->da, addr, ETH_ALEN);
181 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
182 os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
183 if (stype == WLAN_FC_STYPE_DEAUTH) {
184 mgmt->u.deauth.reason_code =
185 host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
186 pos = (u8 *) (&mgmt->u.deauth.reason_code + 1);
187 } else {
188 mgmt->u.disassoc.reason_code =
189 host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
190 pos = (u8 *) (&mgmt->u.disassoc.reason_code + 1);
191 }
192
193 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
194 *pos++ = 4 + 3 + 1;
195 WPA_PUT_BE24(pos, OUI_WFA);
196 pos += 3;
197 *pos++ = P2P_OUI_TYPE;
198
199 *pos++ = P2P_ATTR_MINOR_REASON_CODE;
200 WPA_PUT_LE16(pos, 1);
201 pos += 2;
202 *pos++ = minor_reason_code;
203
204 ret = hapd->driver->send_frame(hapd->drv_priv, (u8 *) mgmt,
205 pos - (u8 *) mgmt, 1);
206 os_free(mgmt);
207
208 return ret < 0 ? -1 : 0;
209}
210#endif /* CONFIG_P2P_MANAGER */
211
212
90a3206a
JM		 213static int hostapd_ctrl_iface_deauthenticate(struct hostapd_data *hapd,
214 const char *txtaddr)
215{
216 u8 addr[ETH_ALEN];
217 struct sta_info *sta;
b91ab76e 218 const char *pos;
90a3206a
JM		 219
220 wpa_printf(MSG_DEBUG, "CTRL_IFACE DEAUTHENTICATE %s", txtaddr);
221
222 if (hwaddr_aton(txtaddr, addr))
223 return -1;
224
b91ab76e
JM		 225 pos = os_strstr(txtaddr, " test=");
226 if (pos) {
227 struct ieee80211_mgmt mgmt;
228 int encrypt;
229 if (hapd->driver->send_frame == NULL)
230 return -1;
231 pos += 6;
232 encrypt = atoi(pos);
233 os_memset(&mgmt, 0, sizeof(mgmt));
234 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
235 WLAN_FC_STYPE_DEAUTH);
236 os_memcpy(mgmt.da, addr, ETH_ALEN);
237 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
238 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
239 mgmt.u.deauth.reason_code =
240 host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
241 if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
242 IEEE80211_HDRLEN +
243 sizeof(mgmt.u.deauth),
244 encrypt) < 0)
245 return -1;
246 return 0;
247 }
248
962473c1
JM		 249#ifdef CONFIG_P2P_MANAGER
250 pos = os_strstr(txtaddr, " p2p=");
251 if (pos) {
252 return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DEAUTH,
253 atoi(pos + 5), addr);
254 }
255#endif /* CONFIG_P2P_MANAGER */
256
90a3206a
JM		 257 hapd->drv.sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
258 sta = ap_get_sta(hapd, addr);
259 if (sta)
260 ap_sta_deauthenticate(hapd, sta,
261 WLAN_REASON_PREV_AUTH_NOT_VALID);
262
263 return 0;
264}
265
266
267static int hostapd_ctrl_iface_disassociate(struct hostapd_data *hapd,
268 const char *txtaddr)
269{
270 u8 addr[ETH_ALEN];
271 struct sta_info *sta;
b91ab76e 272 const char *pos;
90a3206a
JM		 273
274 wpa_printf(MSG_DEBUG, "CTRL_IFACE DISASSOCIATE %s", txtaddr);
275
276 if (hwaddr_aton(txtaddr, addr))
277 return -1;
278
b91ab76e
JM		 279 pos = os_strstr(txtaddr, " test=");
280 if (pos) {
281 struct ieee80211_mgmt mgmt;
282 int encrypt;
283 if (hapd->driver->send_frame == NULL)
284 return -1;
285 pos += 6;
286 encrypt = atoi(pos);
287 os_memset(&mgmt, 0, sizeof(mgmt));
288 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
289 WLAN_FC_STYPE_DISASSOC);
290 os_memcpy(mgmt.da, addr, ETH_ALEN);
291 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
292 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
a33c5f96 293 mgmt.u.disassoc.reason_code =
b91ab76e
JM		 294 host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
295 if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
296 IEEE80211_HDRLEN +
297 sizeof(mgmt.u.deauth),
298 encrypt) < 0)
299 return -1;
300 return 0;
301 }
302
962473c1
JM		 303#ifdef CONFIG_P2P_MANAGER
304 pos = os_strstr(txtaddr, " p2p=");
305 if (pos) {
306 return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DISASSOC,
307 atoi(pos + 5), addr);
308 }
309#endif /* CONFIG_P2P_MANAGER */
310
90a3206a
JM		 311 hapd->drv.sta_disassoc(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
312 sta = ap_get_sta(hapd, addr);
313 if (sta)
314 ap_sta_disassociate(hapd, sta,
315 WLAN_REASON_PREV_AUTH_NOT_VALID);
316
317 return 0;
318}
319
320
88b4b424 321#ifdef CONFIG_IEEE80211W
fe6bdb77 322#ifdef NEED_AP_MLME
88b4b424
JM		 323static int hostapd_ctrl_iface_sa_query(struct hostapd_data *hapd,
324 const char *txtaddr)
325{
326 u8 addr[ETH_ALEN];
327 u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
328
329 wpa_printf(MSG_DEBUG, "CTRL_IFACE SA_QUERY %s", txtaddr);
330
f5455a2d
JM		 331 if (hwaddr_aton(txtaddr, addr) ||
332 os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0)
88b4b424
JM		 333 return -1;
334
88b4b424
JM		 335 ieee802_11_send_sa_query_req(hapd, addr, trans_id);
336
337 return 0;
338}
fe6bdb77 339#endif /* NEED_AP_MLME */
88b4b424
JM		 340#endif /* CONFIG_IEEE80211W */
341
342
ad08c363
JM		 343#ifdef CONFIG_WPS
344static int hostapd_ctrl_iface_wps_pin(struct hostapd_data *hapd, char *txt)
345{
346 char *pin = os_strchr(txt, ' ');
077a781f
JM		 347 char *timeout_txt;
348 int timeout;
31fcea93
JM		 349 u8 addr_buf[ETH_ALEN], *addr = NULL;
350 char *pos;
077a781f 351
ad08c363
JM		 352 if (pin == NULL)
353 return -1;
354 *pin++ = '\0';
077a781f
JM		 355
356 timeout_txt = os_strchr(pin, ' ');
357 if (timeout_txt) {
358 *timeout_txt++ = '\0';
359 timeout = atoi(timeout_txt);
31fcea93
JM		 360 pos = os_strchr(timeout_txt, ' ');
361 if (pos) {
362 *pos++ = '\0';
363 if (hwaddr_aton(pos, addr_buf) == 0)
364 addr = addr_buf;
365 }
077a781f
JM		 366 } else
367 timeout = 0;
368
31fcea93 369 return hostapd_wps_add_pin(hapd, addr, txt, pin, timeout);
ad08c363 370}
46bdb83a
MH		 371
372
3981cb3c
JM		 373static int hostapd_ctrl_iface_wps_check_pin(
374 struct hostapd_data *hapd, char *cmd, char *buf, size_t buflen)
375{
376 char pin[9];
377 size_t len;
378 char *pos;
379 int ret;
380
381 wpa_hexdump_ascii_key(MSG_DEBUG, "WPS_CHECK_PIN",
382 (u8 *) cmd, os_strlen(cmd));
383 for (pos = cmd, len = 0; *pos != '\0'; pos++) {
384 if (*pos < '0' || *pos > '9')
385 continue;
386 pin[len++] = *pos;
387 if (len == 9) {
388 wpa_printf(MSG_DEBUG, "WPS: Too long PIN");
389 return -1;
390 }
391 }
392 if (len != 4 && len != 8) {
393 wpa_printf(MSG_DEBUG, "WPS: Invalid PIN length %d", (int) len);
394 return -1;
395 }
396 pin[len] = '\0';
397
398 if (len == 8) {
399 unsigned int pin_val;
400 pin_val = atoi(pin);
401 if (!wps_pin_valid(pin_val)) {
402 wpa_printf(MSG_DEBUG, "WPS: Invalid checksum digit");
403 ret = os_snprintf(buf, buflen, "FAIL-CHECKSUM\n");
404 if (ret < 0 || (size_t) ret >= buflen)
405 return -1;
406 return ret;
407 }
408 }
409
410 ret = os_snprintf(buf, buflen, "%s", pin);
411 if (ret < 0 || (size_t) ret >= buflen)
412 return -1;
413
414 return ret;
415}
416
417
116f7bb0 418#ifdef CONFIG_WPS_OOB
46bdb83a
MH		 419static int hostapd_ctrl_iface_wps_oob(struct hostapd_data *hapd, char *txt)
420{
e1ee6b60 421 char *path, *method, *name;
46bdb83a
MH		 422
423 path = os_strchr(txt, ' ');
424 if (path == NULL)
425 return -1;
426 *path++ = '\0';
427
428 method = os_strchr(path, ' ');
429 if (method == NULL)
430 return -1;
431 *method++ = '\0';
432
e1ee6b60
MH		 433 name = os_strchr(method, ' ');
434 if (name != NULL)
435 *name++ = '\0';
436
437 return hostapd_wps_start_oob(hapd, txt, path, method, name);
46bdb83a 438}
116f7bb0 439#endif /* CONFIG_WPS_OOB */
5a1cc30f
JM		 440
441
442static int hostapd_ctrl_iface_wps_ap_pin(struct hostapd_data *hapd, char *txt,
443 char *buf, size_t buflen)
444{
445 int timeout = 300;
446 char *pos;
447 const char *pin_txt;
448
449 pos = os_strchr(txt, ' ');
450 if (pos)
451 *pos++ = '\0';
452
453 if (os_strcmp(txt, "disable") == 0) {
454 hostapd_wps_ap_pin_disable(hapd);
455 return os_snprintf(buf, buflen, "OK\n");
456 }
457
458 if (os_strcmp(txt, "random") == 0) {
459 if (pos)
460 timeout = atoi(pos);
461 pin_txt = hostapd_wps_ap_pin_random(hapd, timeout);
462 if (pin_txt == NULL)
463 return -1;
464 return os_snprintf(buf, buflen, "%s", pin_txt);
465 }
466
467 if (os_strcmp(txt, "get") == 0) {
468 pin_txt = hostapd_wps_ap_pin_get(hapd);
469 if (pin_txt == NULL)
470 return -1;
471 return os_snprintf(buf, buflen, "%s", pin_txt);
472 }
473
474 if (os_strcmp(txt, "set") == 0) {
475 char *pin;
476 if (pos == NULL)
477 return -1;
478 pin = pos;
479 pos = os_strchr(pos, ' ');
480 if (pos) {
481 *pos++ = '\0';
482 timeout = atoi(pos);
483 }
484 if (os_strlen(pin) > buflen)
485 return -1;
486 if (hostapd_wps_ap_pin_set(hapd, pin, timeout) < 0)
487 return -1;
488 return os_snprintf(buf, buflen, "%s", pin);
489 }
490
491 return -1;
492}
ad08c363
JM		 493#endif /* CONFIG_WPS */
494
495
403b96fe
JM		 496static int hostapd_ctrl_iface_get_config(struct hostapd_data *hapd,
497 char *buf, size_t buflen)
498{
499 int ret;
500 char *pos, *end;
501
502 pos = buf;
503 end = buf + buflen;
504
505 ret = os_snprintf(pos, end - pos, "bssid=" MACSTR "\n"
506 "ssid=%s\n",
507 MAC2STR(hapd->own_addr),
508 hapd->conf->ssid.ssid);
509 if (ret < 0 || ret >= end - pos)
510 return pos - buf;
511 pos += ret;
512
513#ifdef CONFIG_WPS
514 ret = os_snprintf(pos, end - pos, "wps_state=%s\n",
515 hapd->conf->wps_state == 0 ? "disabled" :
516 (hapd->conf->wps_state == 1 ? "not configured" :
517 "configured"));
518 if (ret < 0 || ret >= end - pos)
519 return pos - buf;
520 pos += ret;
521
522 if (hapd->conf->wps_state &&
523 hapd->conf->ssid.wpa_passphrase) {
524 ret = os_snprintf(pos, end - pos, "passphrase=%s\n",
525 hapd->conf->ssid.wpa_passphrase);
526 if (ret < 0 || ret >= end - pos)
527 return pos - buf;
528 pos += ret;
529 }
530
531 if (hapd->conf->wps_state && hapd->conf->ssid.wpa_psk &&
532 hapd->conf->ssid.wpa_psk->group) {
533 char hex[PMK_LEN * 2 + 1];
534 wpa_snprintf_hex(hex, sizeof(hex),
535 hapd->conf->ssid.wpa_psk->psk, PMK_LEN);
536 ret = os_snprintf(pos, end - pos, "psk=%s\n", hex);
537 if (ret < 0 || ret >= end - pos)
538 return pos - buf;
539 pos += ret;
540 }
541#endif /* CONFIG_WPS */
542
543 if (hapd->conf->wpa && hapd->conf->wpa_key_mgmt) {
544 ret = os_snprintf(pos, end - pos, "key_mgmt=");
545 if (ret < 0 || ret >= end - pos)
546 return pos - buf;
547 pos += ret;
548
549 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) {
550 ret = os_snprintf(pos, end - pos, "WPA-PSK ");
551 if (ret < 0 || ret >= end - pos)
552 return pos - buf;
553 pos += ret;
554 }
555 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
556 ret = os_snprintf(pos, end - pos, "WPA-EAP ");
557 if (ret < 0 || ret >= end - pos)
558 return pos - buf;
559 pos += ret;
560 }
561#ifdef CONFIG_IEEE80211R
562 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_PSK) {
563 ret = os_snprintf(pos, end - pos, "FT-PSK ");
564 if (ret < 0 || ret >= end - pos)
565 return pos - buf;
566 pos += ret;
567 }
568 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
569 ret = os_snprintf(pos, end - pos, "FT-EAP ");
570 if (ret < 0 || ret >= end - pos)
571 return pos - buf;
572 pos += ret;
573 }
574#endif /* CONFIG_IEEE80211R */
575#ifdef CONFIG_IEEE80211W
576 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
577 ret = os_snprintf(pos, end - pos, "WPA-PSK-SHA256 ");
578 if (ret < 0 || ret >= end - pos)
579 return pos - buf;
580 pos += ret;
581 }
582 if (hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
583 ret = os_snprintf(pos, end - pos, "WPA-EAP-SHA256 ");
584 if (ret < 0 || ret >= end - pos)
585 return pos - buf;
586 pos += ret;
587 }
588#endif /* CONFIG_IEEE80211W */
589
590 ret = os_snprintf(pos, end - pos, "\n");
591 if (ret < 0 || ret >= end - pos)
592 return pos - buf;
593 pos += ret;
594 }
595
596 if (hapd->conf->wpa_group == WPA_CIPHER_CCMP) {
597 ret = os_snprintf(pos, end - pos, "group_cipher=CCMP\n");
598 if (ret < 0 || ret >= end - pos)
599 return pos - buf;
600 pos += ret;
601 } else if (hapd->conf->wpa_group == WPA_CIPHER_TKIP) {
602 ret = os_snprintf(pos, end - pos, "group_cipher=TKIP\n");
603 if (ret < 0 || ret >= end - pos)
604 return pos - buf;
605 pos += ret;
606 }
607
608 if ((hapd->conf->wpa & WPA_PROTO_RSN) && hapd->conf->rsn_pairwise) {
609 ret = os_snprintf(pos, end - pos, "rsn_pairwise_cipher=");
610 if (ret < 0 || ret >= end - pos)
611 return pos - buf;
612 pos += ret;
613
614 if (hapd->conf->rsn_pairwise & WPA_CIPHER_CCMP) {
615 ret = os_snprintf(pos, end - pos, "CCMP ");
616 if (ret < 0 || ret >= end - pos)
617 return pos - buf;
618 pos += ret;
619 }
620 if (hapd->conf->rsn_pairwise & WPA_CIPHER_TKIP) {
621 ret = os_snprintf(pos, end - pos, "TKIP ");
622 if (ret < 0 || ret >= end - pos)
623 return pos - buf;
624 pos += ret;
625 }
626
627 ret = os_snprintf(pos, end - pos, "\n");
628 if (ret < 0 || ret >= end - pos)
629 return pos - buf;
630 pos += ret;
631 }
632
633 if ((hapd->conf->wpa & WPA_PROTO_WPA) && hapd->conf->wpa_pairwise) {
634 ret = os_snprintf(pos, end - pos, "wpa_pairwise_cipher=");
635 if (ret < 0 || ret >= end - pos)
636 return pos - buf;
637 pos += ret;
638
639 if (hapd->conf->wpa_pairwise & WPA_CIPHER_CCMP) {
640 ret = os_snprintf(pos, end - pos, "CCMP ");
641 if (ret < 0 || ret >= end - pos)
642 return pos - buf;
643 pos += ret;
644 }
645 if (hapd->conf->wpa_pairwise & WPA_CIPHER_TKIP) {
646 ret = os_snprintf(pos, end - pos, "TKIP ");
647 if (ret < 0 || ret >= end - pos)
648 return pos - buf;
649 pos += ret;
650 }
651
652 ret = os_snprintf(pos, end - pos, "\n");
653 if (ret < 0 || ret >= end - pos)
654 return pos - buf;
655 pos += ret;
656 }
657
658 return pos - buf;
659}
660
661
b4e34f2f
JM		 662static int hostapd_ctrl_iface_set(struct hostapd_data *wpa_s, char *cmd)
663{
664 char *value;
665 int ret = 0;
666
667 value = os_strchr(cmd, ' ');
668 if (value == NULL)
669 return -1;
670 *value++ = '\0';
671
672 wpa_printf(MSG_DEBUG, "CTRL_IFACE SET '%s'='%s'", cmd, value);
673 if (0) {
674#ifdef CONFIG_WPS_TESTING
675 } else if (os_strcasecmp(cmd, "wps_version_number") == 0) {
676 long int val;
677 val = strtol(value, NULL, 0);
678 if (val < 0 || val > 0xff) {
679 ret = -1;
680 wpa_printf(MSG_DEBUG, "WPS: Invalid "
681 "wps_version_number %ld", val);
682 } else {
683 wps_version_number = val;
684 wpa_printf(MSG_DEBUG, "WPS: Testing - force WPS "
685 "version %u.%u",
686 (wps_version_number & 0xf0) >> 4,
687 wps_version_number & 0x0f);
688 }
689 } else if (os_strcasecmp(cmd, "wps_testing_dummy_cred") == 0) {
690 wps_testing_dummy_cred = atoi(value);
691 wpa_printf(MSG_DEBUG, "WPS: Testing - dummy_cred=%d",
692 wps_testing_dummy_cred);
693#endif /* CONFIG_WPS_TESTING */
694 } else {
695 ret = -1;
696 }
697
698 return ret;
699}
700
701
6fc6879b
JM		 702static void hostapd_ctrl_iface_receive(int sock, void *eloop_ctx,
703 void *sock_ctx)
704{
705 struct hostapd_data *hapd = eloop_ctx;
706 char buf[256];
707 int res;
708 struct sockaddr_un from;
709 socklen_t fromlen = sizeof(from);
710 char *reply;
711 const int reply_size = 4096;
712 int reply_len;
713
714 res = recvfrom(sock, buf, sizeof(buf) - 1, 0,
715 (struct sockaddr *) &from, &fromlen);
716 if (res < 0) {
717 perror("recvfrom(ctrl_iface)");
718 return;
719 }
720 buf[res] = '\0';
721 wpa_hexdump_ascii(MSG_DEBUG, "RX ctrl_iface", (u8 *) buf, res);
722
723 reply = os_malloc(reply_size);
724 if (reply == NULL) {
725 sendto(sock, "FAIL\n", 5, 0, (struct sockaddr *) &from,
726 fromlen);
727 return;
728 }
729
730 os_memcpy(reply, "OK\n", 3);
731 reply_len = 3;
732
733 if (os_strcmp(buf, "PING") == 0) {
734 os_memcpy(reply, "PONG\n", 5);
735 reply_len = 5;
736 } else if (os_strcmp(buf, "MIB") == 0) {
737 reply_len = ieee802_11_get_mib(hapd, reply, reply_size);
738 if (reply_len >= 0) {
739 res = wpa_get_mib(hapd->wpa_auth, reply + reply_len,
740 reply_size - reply_len);
741 if (res < 0)
742 reply_len = -1;
743 else
744 reply_len += res;
745 }
746 if (reply_len >= 0) {
747 res = ieee802_1x_get_mib(hapd, reply + reply_len,
748 reply_size - reply_len);
749 if (res < 0)
750 reply_len = -1;
751 else
752 reply_len += res;
753 }
74784010 754#ifndef CONFIG_NO_RADIUS
6fc6879b
JM		 755 if (reply_len >= 0) {
756 res = radius_client_get_mib(hapd->radius,
757 reply + reply_len,
758 reply_size - reply_len);
759 if (res < 0)
760 reply_len = -1;
761 else
762 reply_len += res;
763 }
74784010 764#endif /* CONFIG_NO_RADIUS */
6fc6879b
JM		 765 } else if (os_strcmp(buf, "STA-FIRST") == 0) {
766 reply_len = hostapd_ctrl_iface_sta_first(hapd, reply,
767 reply_size);
768 } else if (os_strncmp(buf, "STA ", 4) == 0) {
769 reply_len = hostapd_ctrl_iface_sta(hapd, buf + 4, reply,
770 reply_size);
771 } else if (os_strncmp(buf, "STA-NEXT ", 9) == 0) {
772 reply_len = hostapd_ctrl_iface_sta_next(hapd, buf + 9, reply,
773 reply_size);
774 } else if (os_strcmp(buf, "ATTACH") == 0) {
775 if (hostapd_ctrl_iface_attach(hapd, &from, fromlen))
776 reply_len = -1;
777 } else if (os_strcmp(buf, "DETACH") == 0) {
778 if (hostapd_ctrl_iface_detach(hapd, &from, fromlen))
779 reply_len = -1;
780 } else if (os_strncmp(buf, "LEVEL ", 6) == 0) {
781 if (hostapd_ctrl_iface_level(hapd, &from, fromlen,
782 buf + 6))
783 reply_len = -1;
784 } else if (os_strncmp(buf, "NEW_STA ", 8) == 0) {
785 if (hostapd_ctrl_iface_new_sta(hapd, buf + 8))
786 reply_len = -1;
90a3206a
JM		 787 } else if (os_strncmp(buf, "DEAUTHENTICATE ", 15) == 0) {
788 if (hostapd_ctrl_iface_deauthenticate(hapd, buf + 15))
789 reply_len = -1;
790 } else if (os_strncmp(buf, "DISASSOCIATE ", 13) == 0) {
791 if (hostapd_ctrl_iface_disassociate(hapd, buf + 13))
792 reply_len = -1;
88b4b424 793#ifdef CONFIG_IEEE80211W
fe6bdb77 794#ifdef NEED_AP_MLME
88b4b424
JM		 795 } else if (os_strncmp(buf, "SA_QUERY ", 9) == 0) {
796 if (hostapd_ctrl_iface_sa_query(hapd, buf + 9))
797 reply_len = -1;
fe6bdb77 798#endif /* NEED_AP_MLME */
88b4b424 799#endif /* CONFIG_IEEE80211W */
ad08c363
JM		 800#ifdef CONFIG_WPS
801 } else if (os_strncmp(buf, "WPS_PIN ", 8) == 0) {
802 if (hostapd_ctrl_iface_wps_pin(hapd, buf + 8))
803 reply_len = -1;
3981cb3c
JM		 804 } else if (os_strncmp(buf, "WPS_CHECK_PIN ", 14) == 0) {
805 reply_len = hostapd_ctrl_iface_wps_check_pin(
806 hapd, buf + 14, reply, reply_size);
ad08c363
JM		 807 } else if (os_strcmp(buf, "WPS_PBC") == 0) {
808 if (hostapd_wps_button_pushed(hapd))
809 reply_len = -1;
116f7bb0 810#ifdef CONFIG_WPS_OOB
46bdb83a
MH		 811 } else if (os_strncmp(buf, "WPS_OOB ", 8) == 0) {
812 if (hostapd_ctrl_iface_wps_oob(hapd, buf + 8))
813 reply_len = -1;
116f7bb0 814#endif /* CONFIG_WPS_OOB */
5a1cc30f
JM		 815 } else if (os_strncmp(buf, "WPS_AP_PIN ", 11) == 0) {
816 reply_len = hostapd_ctrl_iface_wps_ap_pin(hapd, buf + 11,
817 reply, reply_size);
ad08c363 818#endif /* CONFIG_WPS */
403b96fe
JM		 819 } else if (os_strcmp(buf, "GET_CONFIG") == 0) {
820 reply_len = hostapd_ctrl_iface_get_config(hapd, reply,
821 reply_size);
b4e34f2f
JM		 822 } else if (os_strncmp(buf, "SET ", 4) == 0) {
823 if (hostapd_ctrl_iface_set(hapd, buf + 4))
824 reply_len = -1;
6fc6879b
JM		 825 } else {
826 os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
827 reply_len = 16;
828 }
829
830 if (reply_len < 0) {
831 os_memcpy(reply, "FAIL\n", 5);
832 reply_len = 5;
833 }
834 sendto(sock, reply, reply_len, 0, (struct sockaddr *) &from, fromlen);
835 os_free(reply);
836}
837
838
839static char * hostapd_ctrl_iface_path(struct hostapd_data *hapd)
840{
841 char *buf;
842 size_t len;
843
844 if (hapd->conf->ctrl_interface == NULL)
845 return NULL;
846
847 len = os_strlen(hapd->conf->ctrl_interface) +
848 os_strlen(hapd->conf->iface) + 2;
849 buf = os_malloc(len);
850 if (buf == NULL)
851 return NULL;
852
853 os_snprintf(buf, len, "%s/%s",
854 hapd->conf->ctrl_interface, hapd->conf->iface);
855 buf[len - 1] = '\0';
856 return buf;
857}
858
859
42d16805
JM		 860static void hostapd_ctrl_iface_msg_cb(void *ctx, int level,
861 const char *txt, size_t len)
862{
863 struct hostapd_data *hapd = ctx;
864 if (hapd == NULL)
865 return;
866 hostapd_ctrl_iface_send(hapd, level, txt, len);
867}
868
869
6fc6879b
JM		 870int hostapd_ctrl_iface_init(struct hostapd_data *hapd)
871{
872 struct sockaddr_un addr;
873 int s = -1;
874 char *fname = NULL;
875
876 hapd->ctrl_sock = -1;
877
878 if (hapd->conf->ctrl_interface == NULL)
879 return 0;
880
881 if (mkdir(hapd->conf->ctrl_interface, S_IRWXU | S_IRWXG) < 0) {
882 if (errno == EEXIST) {
883 wpa_printf(MSG_DEBUG, "Using existing control "
884 "interface directory.");
885 } else {
886 perror("mkdir[ctrl_interface]");
887 goto fail;
888 }
889 }
890
891 if (hapd->conf->ctrl_interface_gid_set &&
892 chown(hapd->conf->ctrl_interface, 0,
893 hapd->conf->ctrl_interface_gid) < 0) {
894 perror("chown[ctrl_interface]");
895 return -1;
896 }
897
898 if (os_strlen(hapd->conf->ctrl_interface) + 1 +
899 os_strlen(hapd->conf->iface) >= sizeof(addr.sun_path))
900 goto fail;
901
902 s = socket(PF_UNIX, SOCK_DGRAM, 0);
903 if (s < 0) {
904 perror("socket(PF_UNIX)");
905 goto fail;
906 }
907
908 os_memset(&addr, 0, sizeof(addr));
75864b7f
JM		 909#ifdef __FreeBSD__
910 addr.sun_len = sizeof(addr);
911#endif /* __FreeBSD__ */
6fc6879b
JM		 912 addr.sun_family = AF_UNIX;
913 fname = hostapd_ctrl_iface_path(hapd);
914 if (fname == NULL)
915 goto fail;
916 os_strlcpy(addr.sun_path, fname, sizeof(addr.sun_path));
917 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
617d1555
JM		 918 wpa_printf(MSG_DEBUG, "ctrl_iface bind(PF_UNIX) failed: %s",
919 strerror(errno));
920 if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
921 wpa_printf(MSG_DEBUG, "ctrl_iface exists, but does not"
922 " allow connections - assuming it was left"
923 "over from forced program termination");
924 if (unlink(fname) < 0) {
925 perror("unlink[ctrl_iface]");
926 wpa_printf(MSG_ERROR, "Could not unlink "
927 "existing ctrl_iface socket '%s'",
928 fname);
929 goto fail;
930 }
931 if (bind(s, (struct sockaddr *) &addr, sizeof(addr)) <
932 0) {
933 perror("bind(PF_UNIX)");
934 goto fail;
935 }
936 wpa_printf(MSG_DEBUG, "Successfully replaced leftover "
937 "ctrl_iface socket '%s'", fname);
938 } else {
939 wpa_printf(MSG_INFO, "ctrl_iface exists and seems to "
940 "be in use - cannot override it");
941 wpa_printf(MSG_INFO, "Delete '%s' manually if it is "
942 "not used anymore", fname);
943 os_free(fname);
944 fname = NULL;
945 goto fail;
946 }
6fc6879b
JM		 947 }
948
949 if (hapd->conf->ctrl_interface_gid_set &&
950 chown(fname, 0, hapd->conf->ctrl_interface_gid) < 0) {
951 perror("chown[ctrl_interface/ifname]");
952 goto fail;
953 }
954
955 if (chmod(fname, S_IRWXU | S_IRWXG) < 0) {
956 perror("chmod[ctrl_interface/ifname]");
957 goto fail;
958 }
959 os_free(fname);
960
961 hapd->ctrl_sock = s;
962 eloop_register_read_sock(s, hostapd_ctrl_iface_receive, hapd,
963 NULL);
4f760fcc 964 hapd->msg_ctx = hapd;
42d16805 965 wpa_msg_register_cb(hostapd_ctrl_iface_msg_cb);
6fc6879b
JM		 966
967 return 0;
968
969fail:
970 if (s >= 0)
971 close(s);
972 if (fname) {
973 unlink(fname);
974 os_free(fname);
975 }
976 return -1;
977}
978
979
980void hostapd_ctrl_iface_deinit(struct hostapd_data *hapd)
981{
982 struct wpa_ctrl_dst *dst, *prev;
983
984 if (hapd->ctrl_sock > -1) {
985 char *fname;
986 eloop_unregister_read_sock(hapd->ctrl_sock);
987 close(hapd->ctrl_sock);
988 hapd->ctrl_sock = -1;
989 fname = hostapd_ctrl_iface_path(hapd);
990 if (fname)
991 unlink(fname);
992 os_free(fname);
993
994 if (hapd->conf->ctrl_interface &&
995 rmdir(hapd->conf->ctrl_interface) < 0) {
996 if (errno == ENOTEMPTY) {
997 wpa_printf(MSG_DEBUG, "Control interface "
998 "directory not empty - leaving it "
999 "behind");
1000 } else {
1001 perror("rmdir[ctrl_interface]");
1002 }
1003 }
1004 }
1005
1006 dst = hapd->ctrl_dst;
1007 while (dst) {
1008 prev = dst;
1009 dst = dst->next;
1010 os_free(prev);
1011 }
1012}
1013
1014
42d16805
JM		 1015static void hostapd_ctrl_iface_send(struct hostapd_data *hapd, int level,
1016 const char *buf, size_t len)
6fc6879b
JM		 1017{
1018 struct wpa_ctrl_dst *dst, *next;
1019 struct msghdr msg;
1020 int idx;
1021 struct iovec io[2];
1022 char levelstr[10];
1023
1024 dst = hapd->ctrl_dst;
1025 if (hapd->ctrl_sock < 0 || dst == NULL)
1026 return;
1027
1028 os_snprintf(levelstr, sizeof(levelstr), "<%d>", level);
1029 io[0].iov_base = levelstr;
1030 io[0].iov_len = os_strlen(levelstr);
42d16805 1031 io[1].iov_base = (char *) buf;
6fc6879b
JM		 1032 io[1].iov_len = len;
1033 os_memset(&msg, 0, sizeof(msg));
1034 msg.msg_iov = io;
1035 msg.msg_iovlen = 2;
1036
1037 idx = 0;
1038 while (dst) {
1039 next = dst->next;
1040 if (level >= dst->debug_level) {
1041 wpa_hexdump(MSG_DEBUG, "CTRL_IFACE monitor send",
75864b7f
JM		 1042 (u8 *) dst->addr.sun_path, dst->addrlen -
1043 offsetof(struct sockaddr_un, sun_path));
6fc6879b
JM		 1044 msg.msg_name = &dst->addr;
1045 msg.msg_namelen = dst->addrlen;
1046 if (sendmsg(hapd->ctrl_sock, &msg, 0) < 0) {
c5aaa015
JM		 1047 int _errno = errno;
1048 wpa_printf(MSG_INFO, "CTRL_IFACE monitor[%d]: "
1049 "%d - %s",
1050 idx, errno, strerror(errno));
6fc6879b 1051 dst->errors++;
c5aaa015 1052 if (dst->errors > 10 || _errno == ENOENT) {
6fc6879b
JM		 1053 hostapd_ctrl_iface_detach(
1054 hapd, &dst->addr,
1055 dst->addrlen);
1056 }
1057 } else
1058 dst->errors = 0;
1059 }
1060 idx++;
1061 dst = next;
1062 }
1063}
1064
1065#endif /* CONFIG_NATIVE_WINDOWS */
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