1 /*
2 * Control interface for shared AP commands
3 * Copyright (c) 2004-2014, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "utils/includes.h"
10
11 #include "utils/common.h"
12 #include "common/ieee802_11_defs.h"
13 #include "common/sae.h"
14 #include "eapol_auth/eapol_auth_sm.h"
15 #include "hostapd.h"
16 #include "ieee802_1x.h"
17 #include "wpa_auth.h"
18 #include "ieee802_11.h"
19 #include "sta_info.h"
20 #include "wps_hostapd.h"
21 #include "p2p_hostapd.h"
22 #include "ctrl_iface_ap.h"
23 #include "ap_drv_ops.h"
24
25
hostapd_get_sta_tx_rx(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)26 static int hostapd_get_sta_tx_rx(struct hostapd_data *hapd,
27 struct sta_info *sta,
28 char *buf, size_t buflen)
29 {
30 struct hostap_sta_driver_data data;
31 int ret;
32
33 if (hostapd_drv_read_sta_data(hapd, &data, sta->addr) < 0)
34 return 0;
35
36 ret = os_snprintf(buf, buflen, "rx_packets=%lu\ntx_packets=%lu\n"
37 "rx_bytes=%lu\ntx_bytes=%lu\n",
38 data.rx_packets, data.tx_packets,
39 data.rx_bytes, data.tx_bytes);
40 if (os_snprintf_error(buflen, ret))
41 return 0;
42 return ret;
43 }
44
45
hostapd_get_sta_conn_time(struct sta_info * sta,char * buf,size_t buflen)46 static int hostapd_get_sta_conn_time(struct sta_info *sta,
47 char *buf, size_t buflen)
48 {
49 struct os_reltime age;
50 int ret;
51
52 if (!sta->connected_time.sec)
53 return 0;
54
55 os_reltime_age(&sta->connected_time, &age);
56
57 ret = os_snprintf(buf, buflen, "connected_time=%u\n",
58 (unsigned int) age.sec);
59 if (os_snprintf_error(buflen, ret))
60 return 0;
61 return ret;
62 }
63
64
timeout_next_str(int val)65 static const char * timeout_next_str(int val)
66 {
67 switch (val) {
68 case STA_NULLFUNC:
69 return "NULLFUNC POLL";
70 case STA_DISASSOC:
71 return "DISASSOC";
72 case STA_DEAUTH:
73 return "DEAUTH";
74 case STA_REMOVE:
75 return "REMOVE";
76 case STA_DISASSOC_FROM_CLI:
77 return "DISASSOC_FROM_CLI";
78 }
79
80 return "?";
81 }
82
83
hostapd_ctrl_iface_sta_mib(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)84 static int hostapd_ctrl_iface_sta_mib(struct hostapd_data *hapd,
85 struct sta_info *sta,
86 char *buf, size_t buflen)
87 {
88 int len, res, ret, i;
89
90 if (!sta)
91 return 0;
92
93 len = 0;
94 ret = os_snprintf(buf + len, buflen - len, MACSTR "\nflags=",
95 MAC2STR(sta->addr));
96 if (os_snprintf_error(buflen - len, ret))
97 return len;
98 len += ret;
99
100 ret = ap_sta_flags_txt(sta->flags, buf + len, buflen - len);
101 if (ret < 0)
102 return len;
103 len += ret;
104
105 ret = os_snprintf(buf + len, buflen - len, "\naid=%d\ncapability=0x%x\n"
106 "listen_interval=%d\nsupported_rates=",
107 sta->aid, sta->capability, sta->listen_interval);
108 if (os_snprintf_error(buflen - len, ret))
109 return len;
110 len += ret;
111
112 for (i = 0; i < sta->supported_rates_len; i++) {
113 ret = os_snprintf(buf + len, buflen - len, "%02x%s",
114 sta->supported_rates[i],
115 i + 1 < sta->supported_rates_len ? " " : "");
116 if (os_snprintf_error(buflen - len, ret))
117 return len;
118 len += ret;
119 }
120
121 ret = os_snprintf(buf + len, buflen - len, "\ntimeout_next=%s\n",
122 timeout_next_str(sta->timeout_next));
123 if (os_snprintf_error(buflen - len, ret))
124 return len;
125 len += ret;
126
127 res = ieee802_11_get_mib_sta(hapd, sta, buf + len, buflen - len);
128 if (res >= 0)
129 len += res;
130 res = wpa_get_mib_sta(sta->wpa_sm, buf + len, buflen - len);
131 if (res >= 0)
132 len += res;
133 res = ieee802_1x_get_mib_sta(hapd, sta, buf + len, buflen - len);
134 if (res >= 0)
135 len += res;
136 res = hostapd_wps_get_mib_sta(hapd, sta->addr, buf + len,
137 buflen - len);
138 if (res >= 0)
139 len += res;
140 res = hostapd_p2p_get_mib_sta(hapd, sta, buf + len, buflen - len);
141 if (res >= 0)
142 len += res;
143
144 len += hostapd_get_sta_tx_rx(hapd, sta, buf + len, buflen - len);
145 len += hostapd_get_sta_conn_time(sta, buf + len, buflen - len);
146
147 #ifdef CONFIG_SAE
148 if (sta->sae && sta->sae->state == SAE_ACCEPTED) {
149 res = os_snprintf(buf + len, buflen - len, "sae_group=%d\n",
150 sta->sae->group);
151 if (!os_snprintf_error(buflen - len, res))
152 len += res;
153 }
154 #endif /* CONFIG_SAE */
155
156 if (sta->vlan_id > 0) {
157 res = os_snprintf(buf + len, buflen - len, "vlan_id=%d\n",
158 sta->vlan_id);
159 if (!os_snprintf_error(buflen - len, res))
160 len += res;
161 }
162
163 return len;
164 }
165
166
hostapd_ctrl_iface_sta_first(struct hostapd_data * hapd,char * buf,size_t buflen)167 int hostapd_ctrl_iface_sta_first(struct hostapd_data *hapd,
168 char *buf, size_t buflen)
169 {
170 return hostapd_ctrl_iface_sta_mib(hapd, hapd->sta_list, buf, buflen);
171 }
172
173
hostapd_ctrl_iface_sta(struct hostapd_data * hapd,const char * txtaddr,char * buf,size_t buflen)174 int hostapd_ctrl_iface_sta(struct hostapd_data *hapd, const char *txtaddr,
175 char *buf, size_t buflen)
176 {
177 u8 addr[ETH_ALEN];
178 int ret;
179 const char *pos;
180 struct sta_info *sta;
181
182 if (hwaddr_aton(txtaddr, addr)) {
183 ret = os_snprintf(buf, buflen, "FAIL\n");
184 if (os_snprintf_error(buflen, ret))
185 return 0;
186 return ret;
187 }
188
189 sta = ap_get_sta(hapd, addr);
190 if (sta == NULL)
191 return -1;
192
193 pos = os_strchr(txtaddr, ' ');
194 if (pos) {
195 pos++;
196
197 #ifdef HOSTAPD_DUMP_STATE
198 if (os_strcmp(pos, "eapol") == 0) {
199 if (sta->eapol_sm == NULL)
200 return -1;
201 return eapol_auth_dump_state(sta->eapol_sm, buf,
202 buflen);
203 }
204 #endif /* HOSTAPD_DUMP_STATE */
205
206 return -1;
207 }
208
209 return hostapd_ctrl_iface_sta_mib(hapd, sta, buf, buflen);
210 }
211
212
hostapd_ctrl_iface_sta_next(struct hostapd_data * hapd,const char * txtaddr,char * buf,size_t buflen)213 int hostapd_ctrl_iface_sta_next(struct hostapd_data *hapd, const char *txtaddr,
214 char *buf, size_t buflen)
215 {
216 u8 addr[ETH_ALEN];
217 struct sta_info *sta;
218 int ret;
219
220 if (hwaddr_aton(txtaddr, addr) ||
221 (sta = ap_get_sta(hapd, addr)) == NULL) {
222 ret = os_snprintf(buf, buflen, "FAIL\n");
223 if (os_snprintf_error(buflen, ret))
224 return 0;
225 return ret;
226 }
227
228 if (!sta->next)
229 return 0;
230
231 return hostapd_ctrl_iface_sta_mib(hapd, sta->next, buf, buflen);
232 }
233
234
235 #ifdef CONFIG_P2P_MANAGER
p2p_manager_disconnect(struct hostapd_data * hapd,u16 stype,u8 minor_reason_code,const u8 * addr)236 static int p2p_manager_disconnect(struct hostapd_data *hapd, u16 stype,
237 u8 minor_reason_code, const u8 *addr)
238 {
239 struct ieee80211_mgmt *mgmt;
240 int ret;
241 u8 *pos;
242
243 if (hapd->driver->send_frame == NULL)
244 return -1;
245
246 mgmt = os_zalloc(sizeof(*mgmt) + 100);
247 if (mgmt == NULL)
248 return -1;
249
250 mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, stype);
251 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "P2P: Disconnect STA " MACSTR
252 " with minor reason code %u (stype=%u (%s))",
253 MAC2STR(addr), minor_reason_code, stype,
254 fc2str(mgmt->frame_control));
255
256 os_memcpy(mgmt->da, addr, ETH_ALEN);
257 os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
258 os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
259 if (stype == WLAN_FC_STYPE_DEAUTH) {
260 mgmt->u.deauth.reason_code =
261 host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
262 pos = (u8 *) (&mgmt->u.deauth.reason_code + 1);
263 } else {
264 mgmt->u.disassoc.reason_code =
265 host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
266 pos = (u8 *) (&mgmt->u.disassoc.reason_code + 1);
267 }
268
269 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
270 *pos++ = 4 + 3 + 1;
271 WPA_PUT_BE32(pos, P2P_IE_VENDOR_TYPE);
272 pos += 4;
273
274 *pos++ = P2P_ATTR_MINOR_REASON_CODE;
275 WPA_PUT_LE16(pos, 1);
276 pos += 2;
277 *pos++ = minor_reason_code;
278
279 ret = hapd->driver->send_frame(hapd->drv_priv, (u8 *) mgmt,
280 pos - (u8 *) mgmt, 1);
281 os_free(mgmt);
282
283 return ret < 0 ? -1 : 0;
284 }
285 #endif /* CONFIG_P2P_MANAGER */
286
287
hostapd_ctrl_iface_deauthenticate(struct hostapd_data * hapd,const char * txtaddr)288 int hostapd_ctrl_iface_deauthenticate(struct hostapd_data *hapd,
289 const char *txtaddr)
290 {
291 u8 addr[ETH_ALEN];
292 struct sta_info *sta;
293 const char *pos;
294 u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
295
296 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DEAUTHENTICATE %s",
297 txtaddr);
298
299 if (hwaddr_aton(txtaddr, addr))
300 return -1;
301
302 pos = os_strstr(txtaddr, " reason=");
303 if (pos)
304 reason = atoi(pos + 8);
305
306 pos = os_strstr(txtaddr, " test=");
307 if (pos) {
308 struct ieee80211_mgmt mgmt;
309 int encrypt;
310 if (hapd->driver->send_frame == NULL)
311 return -1;
312 pos += 6;
313 encrypt = atoi(pos);
314 os_memset(&mgmt, 0, sizeof(mgmt));
315 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
316 WLAN_FC_STYPE_DEAUTH);
317 os_memcpy(mgmt.da, addr, ETH_ALEN);
318 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
319 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
320 mgmt.u.deauth.reason_code = host_to_le16(reason);
321 if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
322 IEEE80211_HDRLEN +
323 sizeof(mgmt.u.deauth),
324 encrypt) < 0)
325 return -1;
326 return 0;
327 }
328
329 #ifdef CONFIG_P2P_MANAGER
330 pos = os_strstr(txtaddr, " p2p=");
331 if (pos) {
332 return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DEAUTH,
333 atoi(pos + 5), addr);
334 }
335 #endif /* CONFIG_P2P_MANAGER */
336
337 hostapd_drv_sta_deauth(hapd, addr, reason);
338 sta = ap_get_sta(hapd, addr);
339 if (sta)
340 ap_sta_deauthenticate(hapd, sta, reason);
341 else if (addr[0] == 0xff)
342 hostapd_free_stas(hapd);
343
344 return 0;
345 }
346
347
hostapd_ctrl_iface_disassociate(struct hostapd_data * hapd,const char * txtaddr)348 int hostapd_ctrl_iface_disassociate(struct hostapd_data *hapd,
349 const char *txtaddr)
350 {
351 u8 addr[ETH_ALEN];
352 struct sta_info *sta;
353 const char *pos;
354 u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
355
356 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DISASSOCIATE %s",
357 txtaddr);
358
359 if (hwaddr_aton(txtaddr, addr))
360 return -1;
361
362 pos = os_strstr(txtaddr, " reason=");
363 if (pos)
364 reason = atoi(pos + 8);
365
366 pos = os_strstr(txtaddr, " test=");
367 if (pos) {
368 struct ieee80211_mgmt mgmt;
369 int encrypt;
370 if (hapd->driver->send_frame == NULL)
371 return -1;
372 pos += 6;
373 encrypt = atoi(pos);
374 os_memset(&mgmt, 0, sizeof(mgmt));
375 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
376 WLAN_FC_STYPE_DISASSOC);
377 os_memcpy(mgmt.da, addr, ETH_ALEN);
378 os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
379 os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
380 mgmt.u.disassoc.reason_code = host_to_le16(reason);
381 if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
382 IEEE80211_HDRLEN +
383 sizeof(mgmt.u.deauth),
384 encrypt) < 0)
385 return -1;
386 return 0;
387 }
388
389 #ifdef CONFIG_P2P_MANAGER
390 pos = os_strstr(txtaddr, " p2p=");
391 if (pos) {
392 return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DISASSOC,
393 atoi(pos + 5), addr);
394 }
395 #endif /* CONFIG_P2P_MANAGER */
396
397 hostapd_drv_sta_disassoc(hapd, addr, reason);
398 sta = ap_get_sta(hapd, addr);
399 if (sta)
400 ap_sta_disassociate(hapd, sta, reason);
401 else if (addr[0] == 0xff)
402 hostapd_free_stas(hapd);
403
404 return 0;
405 }
406
407
hostapd_ctrl_iface_status(struct hostapd_data * hapd,char * buf,size_t buflen)408 int hostapd_ctrl_iface_status(struct hostapd_data *hapd, char *buf,
409 size_t buflen)
410 {
411 struct hostapd_iface *iface = hapd->iface;
412 int len = 0, ret;
413 size_t i;
414
415 ret = os_snprintf(buf + len, buflen - len,
416 "state=%s\n"
417 "phy=%s\n"
418 "freq=%d\n"
419 "num_sta_non_erp=%d\n"
420 "num_sta_no_short_slot_time=%d\n"
421 "num_sta_no_short_preamble=%d\n"
422 "olbc=%d\n"
423 "num_sta_ht_no_gf=%d\n"
424 "num_sta_no_ht=%d\n"
425 "num_sta_ht_20_mhz=%d\n"
426 "num_sta_ht40_intolerant=%d\n"
427 "olbc_ht=%d\n"
428 "ht_op_mode=0x%x\n",
429 hostapd_state_text(iface->state),
430 iface->phy,
431 iface->freq,
432 iface->num_sta_non_erp,
433 iface->num_sta_no_short_slot_time,
434 iface->num_sta_no_short_preamble,
435 iface->olbc,
436 iface->num_sta_ht_no_gf,
437 iface->num_sta_no_ht,
438 iface->num_sta_ht_20mhz,
439 iface->num_sta_ht40_intolerant,
440 iface->olbc_ht,
441 iface->ht_op_mode);
442 if (os_snprintf_error(buflen - len, ret))
443 return len;
444 len += ret;
445
446 if (!iface->cac_started || !iface->dfs_cac_ms) {
447 ret = os_snprintf(buf + len, buflen - len,
448 "cac_time_seconds=%d\n"
449 "cac_time_left_seconds=N/A\n",
450 iface->dfs_cac_ms / 1000);
451 } else {
452 /* CAC started and CAC time set - calculate remaining time */
453 struct os_reltime now;
454 unsigned int left_time;
455
456 os_reltime_age(&iface->dfs_cac_start, &now);
457 left_time = iface->dfs_cac_ms / 1000 - now.sec;
458 ret = os_snprintf(buf + len, buflen - len,
459 "cac_time_seconds=%u\n"
460 "cac_time_left_seconds=%u\n",
461 iface->dfs_cac_ms / 1000,
462 left_time);
463 }
464 if (os_snprintf_error(buflen - len, ret))
465 return len;
466 len += ret;
467
468 ret = os_snprintf(buf + len, buflen - len,
469 "channel=%u\n"
470 "secondary_channel=%d\n"
471 "ieee80211n=%d\n"
472 "ieee80211ac=%d\n"
473 "vht_oper_chwidth=%d\n"
474 "vht_oper_centr_freq_seg0_idx=%d\n"
475 "vht_oper_centr_freq_seg1_idx=%d\n",
476 iface->conf->channel,
477 iface->conf->secondary_channel,
478 iface->conf->ieee80211n,
479 iface->conf->ieee80211ac,
480 iface->conf->vht_oper_chwidth,
481 iface->conf->vht_oper_centr_freq_seg0_idx,
482 iface->conf->vht_oper_centr_freq_seg1_idx);
483 if (os_snprintf_error(buflen - len, ret))
484 return len;
485 len += ret;
486
487 for (i = 0; i < iface->num_bss; i++) {
488 struct hostapd_data *bss = iface->bss[i];
489 ret = os_snprintf(buf + len, buflen - len,
490 "bss[%d]=%s\n"
491 "bssid[%d]=" MACSTR "\n"
492 "ssid[%d]=%s\n"
493 "num_sta[%d]=%d\n",
494 (int) i, bss->conf->iface,
495 (int) i, MAC2STR(bss->own_addr),
496 (int) i,
497 wpa_ssid_txt(bss->conf->ssid.ssid,
498 bss->conf->ssid.ssid_len),
499 (int) i, bss->num_sta);
500 if (os_snprintf_error(buflen - len, ret))
501 return len;
502 len += ret;
503 }
504
505 return len;
506 }
507
508
hostapd_parse_csa_settings(const char * pos,struct csa_settings * settings)509 int hostapd_parse_csa_settings(const char *pos,
510 struct csa_settings *settings)
511 {
512 char *end;
513
514 os_memset(settings, 0, sizeof(*settings));
515 settings->cs_count = strtol(pos, &end, 10);
516 if (pos == end) {
517 wpa_printf(MSG_ERROR, "chanswitch: invalid cs_count provided");
518 return -1;
519 }
520
521 settings->freq_params.freq = atoi(end);
522 if (settings->freq_params.freq == 0) {
523 wpa_printf(MSG_ERROR, "chanswitch: invalid freq provided");
524 return -1;
525 }
526
527 #define SET_CSA_SETTING(str) \
528 do { \
529 const char *pos2 = os_strstr(pos, " " #str "="); \
530 if (pos2) { \
531 pos2 += sizeof(" " #str "=") - 1; \
532 settings->freq_params.str = atoi(pos2); \
533 } \
534 } while (0)
535
536 SET_CSA_SETTING(center_freq1);
537 SET_CSA_SETTING(center_freq2);
538 SET_CSA_SETTING(bandwidth);
539 SET_CSA_SETTING(sec_channel_offset);
540 settings->freq_params.ht_enabled = !!os_strstr(pos, " ht");
541 settings->freq_params.vht_enabled = !!os_strstr(pos, " vht");
542 settings->block_tx = !!os_strstr(pos, " blocktx");
543 #undef SET_CSA_SETTING
544
545 return 0;
546 }
547
548
hostapd_ctrl_iface_stop_ap(struct hostapd_data * hapd)549 int hostapd_ctrl_iface_stop_ap(struct hostapd_data *hapd)
550 {
551 return hostapd_drv_stop_ap(hapd);
552 }
553