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 "fst/fst_ctrl_iface.h"
16#include "hostapd.h"
17#include "ieee802_1x.h"
18#include "wpa_auth.h"
19#include "ieee802_11.h"
20#include "sta_info.h"
21#include "wps_hostapd.h"
22#include "p2p_hostapd.h"
23#include "ctrl_iface_ap.h"
24#include "ap_drv_ops.h"
25#include "mbo_ap.h"
26
27
28static int hostapd_get_sta_tx_rx(struct hostapd_data *hapd,
29				 struct sta_info *sta,
30				 char *buf, size_t buflen)
31{
32	struct hostap_sta_driver_data data;
33	int ret;
34
35	if (hostapd_drv_read_sta_data(hapd, &data, sta->addr) < 0)
36		return 0;
37
38	ret = os_snprintf(buf, buflen, "rx_packets=%lu\ntx_packets=%lu\n"
39			  "rx_bytes=%llu\ntx_bytes=%llu\n",
40			  data.rx_packets, data.tx_packets,
41			  data.rx_bytes, data.tx_bytes);
42	if (os_snprintf_error(buflen, ret))
43		return 0;
44	return ret;
45}
46
47
48static int hostapd_get_sta_conn_time(struct sta_info *sta,
49				     char *buf, size_t buflen)
50{
51	struct os_reltime age;
52	int ret;
53
54	if (!sta->connected_time.sec)
55		return 0;
56
57	os_reltime_age(&sta->connected_time, &age);
58
59	ret = os_snprintf(buf, buflen, "connected_time=%u\n",
60			  (unsigned int) age.sec);
61	if (os_snprintf_error(buflen, ret))
62		return 0;
63	return ret;
64}
65
66
67static const char * timeout_next_str(int val)
68{
69	switch (val) {
70	case STA_NULLFUNC:
71		return "NULLFUNC POLL";
72	case STA_DISASSOC:
73		return "DISASSOC";
74	case STA_DEAUTH:
75		return "DEAUTH";
76	case STA_REMOVE:
77		return "REMOVE";
78	case STA_DISASSOC_FROM_CLI:
79		return "DISASSOC_FROM_CLI";
80	}
81
82	return "?";
83}
84
85
86static int hostapd_ctrl_iface_sta_mib(struct hostapd_data *hapd,
87				      struct sta_info *sta,
88				      char *buf, size_t buflen)
89{
90	int len, res, ret, i;
91
92	if (!sta)
93		return 0;
94
95	len = 0;
96	ret = os_snprintf(buf + len, buflen - len, MACSTR "\nflags=",
97			  MAC2STR(sta->addr));
98	if (os_snprintf_error(buflen - len, ret))
99		return len;
100	len += ret;
101
102	ret = ap_sta_flags_txt(sta->flags, buf + len, buflen - len);
103	if (ret < 0)
104		return len;
105	len += ret;
106
107	ret = os_snprintf(buf + len, buflen - len, "\naid=%d\ncapability=0x%x\n"
108			  "listen_interval=%d\nsupported_rates=",
109			  sta->aid, sta->capability, sta->listen_interval);
110	if (os_snprintf_error(buflen - len, ret))
111		return len;
112	len += ret;
113
114	for (i = 0; i < sta->supported_rates_len; i++) {
115		ret = os_snprintf(buf + len, buflen - len, "%02x%s",
116				  sta->supported_rates[i],
117				  i + 1 < sta->supported_rates_len ? " " : "");
118		if (os_snprintf_error(buflen - len, ret))
119			return len;
120		len += ret;
121	}
122
123	ret = os_snprintf(buf + len, buflen - len, "\ntimeout_next=%s\n",
124			  timeout_next_str(sta->timeout_next));
125	if (os_snprintf_error(buflen - len, ret))
126		return len;
127	len += ret;
128
129	res = ieee802_11_get_mib_sta(hapd, sta, buf + len, buflen - len);
130	if (res >= 0)
131		len += res;
132	res = wpa_get_mib_sta(sta->wpa_sm, buf + len, buflen - len);
133	if (res >= 0)
134		len += res;
135	res = ieee802_1x_get_mib_sta(hapd, sta, buf + len, buflen - len);
136	if (res >= 0)
137		len += res;
138	res = hostapd_wps_get_mib_sta(hapd, sta->addr, buf + len,
139				      buflen - len);
140	if (res >= 0)
141		len += res;
142	res = hostapd_p2p_get_mib_sta(hapd, sta, buf + len, buflen - len);
143	if (res >= 0)
144		len += res;
145
146	len += hostapd_get_sta_tx_rx(hapd, sta, buf + len, buflen - len);
147	len += hostapd_get_sta_conn_time(sta, buf + len, buflen - len);
148
149#ifdef CONFIG_SAE
150	if (sta->sae && sta->sae->state == SAE_ACCEPTED) {
151		res = os_snprintf(buf + len, buflen - len, "sae_group=%d\n",
152				  sta->sae->group);
153		if (!os_snprintf_error(buflen - len, res))
154			len += res;
155	}
156#endif /* CONFIG_SAE */
157
158	if (sta->vlan_id > 0) {
159		res = os_snprintf(buf + len, buflen - len, "vlan_id=%d\n",
160				  sta->vlan_id);
161		if (!os_snprintf_error(buflen - len, res))
162			len += res;
163	}
164
165	res = mbo_ap_get_info(sta, buf + len, buflen - len);
166	if (res >= 0)
167		len += res;
168
169	if (sta->supp_op_classes &&
170	    buflen - len > (unsigned) (17 + 2 * sta->supp_op_classes[0])) {
171		len += os_snprintf(buf + len, buflen - len, "supp_op_classes=");
172		len += wpa_snprintf_hex(buf + len, buflen - len,
173					sta->supp_op_classes + 1,
174					sta->supp_op_classes[0]);
175		len += os_snprintf(buf + len, buflen - len, "\n");
176	}
177
178	return len;
179}
180
181
182int hostapd_ctrl_iface_sta_first(struct hostapd_data *hapd,
183				 char *buf, size_t buflen)
184{
185	return hostapd_ctrl_iface_sta_mib(hapd, hapd->sta_list, buf, buflen);
186}
187
188
189int hostapd_ctrl_iface_sta(struct hostapd_data *hapd, const char *txtaddr,
190			   char *buf, size_t buflen)
191{
192	u8 addr[ETH_ALEN];
193	int ret;
194	const char *pos;
195	struct sta_info *sta;
196
197	if (hwaddr_aton(txtaddr, addr)) {
198		ret = os_snprintf(buf, buflen, "FAIL\n");
199		if (os_snprintf_error(buflen, ret))
200			return 0;
201		return ret;
202	}
203
204	sta = ap_get_sta(hapd, addr);
205	if (sta == NULL)
206		return -1;
207
208	pos = os_strchr(txtaddr, ' ');
209	if (pos) {
210		pos++;
211
212#ifdef HOSTAPD_DUMP_STATE
213		if (os_strcmp(pos, "eapol") == 0) {
214			if (sta->eapol_sm == NULL)
215				return -1;
216			return eapol_auth_dump_state(sta->eapol_sm, buf,
217						     buflen);
218		}
219#endif /* HOSTAPD_DUMP_STATE */
220
221		return -1;
222	}
223
224	ret = hostapd_ctrl_iface_sta_mib(hapd, sta, buf, buflen);
225	ret += fst_ctrl_iface_mb_info(addr, buf + ret, buflen - ret);
226
227	return ret;
228}
229
230
231int hostapd_ctrl_iface_sta_next(struct hostapd_data *hapd, const char *txtaddr,
232				char *buf, size_t buflen)
233{
234	u8 addr[ETH_ALEN];
235	struct sta_info *sta;
236	int ret;
237
238	if (hwaddr_aton(txtaddr, addr) ||
239	    (sta = ap_get_sta(hapd, addr)) == NULL) {
240		ret = os_snprintf(buf, buflen, "FAIL\n");
241		if (os_snprintf_error(buflen, ret))
242			return 0;
243		return ret;
244	}
245
246	if (!sta->next)
247		return 0;
248
249	return hostapd_ctrl_iface_sta_mib(hapd, sta->next, buf, buflen);
250}
251
252
253#ifdef CONFIG_P2P_MANAGER
254static int p2p_manager_disconnect(struct hostapd_data *hapd, u16 stype,
255				  u8 minor_reason_code, const u8 *addr)
256{
257	struct ieee80211_mgmt *mgmt;
258	int ret;
259	u8 *pos;
260
261	if (hapd->driver->send_frame == NULL)
262		return -1;
263
264	mgmt = os_zalloc(sizeof(*mgmt) + 100);
265	if (mgmt == NULL)
266		return -1;
267
268	mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, stype);
269	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "P2P: Disconnect STA " MACSTR
270		" with minor reason code %u (stype=%u (%s))",
271		MAC2STR(addr), minor_reason_code, stype,
272		fc2str(mgmt->frame_control));
273
274	os_memcpy(mgmt->da, addr, ETH_ALEN);
275	os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
276	os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
277	if (stype == WLAN_FC_STYPE_DEAUTH) {
278		mgmt->u.deauth.reason_code =
279			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
280		pos = (u8 *) (&mgmt->u.deauth.reason_code + 1);
281	} else {
282		mgmt->u.disassoc.reason_code =
283			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
284		pos = (u8 *) (&mgmt->u.disassoc.reason_code + 1);
285	}
286
287	*pos++ = WLAN_EID_VENDOR_SPECIFIC;
288	*pos++ = 4 + 3 + 1;
289	WPA_PUT_BE32(pos, P2P_IE_VENDOR_TYPE);
290	pos += 4;
291
292	*pos++ = P2P_ATTR_MINOR_REASON_CODE;
293	WPA_PUT_LE16(pos, 1);
294	pos += 2;
295	*pos++ = minor_reason_code;
296
297	ret = hapd->driver->send_frame(hapd->drv_priv, (u8 *) mgmt,
298				       pos - (u8 *) mgmt, 1);
299	os_free(mgmt);
300
301	return ret < 0 ? -1 : 0;
302}
303#endif /* CONFIG_P2P_MANAGER */
304
305
306int hostapd_ctrl_iface_deauthenticate(struct hostapd_data *hapd,
307				      const char *txtaddr)
308{
309	u8 addr[ETH_ALEN];
310	struct sta_info *sta;
311	const char *pos;
312	u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
313
314	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DEAUTHENTICATE %s",
315		txtaddr);
316
317	if (hwaddr_aton(txtaddr, addr))
318		return -1;
319
320	pos = os_strstr(txtaddr, " reason=");
321	if (pos)
322		reason = atoi(pos + 8);
323
324	pos = os_strstr(txtaddr, " test=");
325	if (pos) {
326		struct ieee80211_mgmt mgmt;
327		int encrypt;
328		if (hapd->driver->send_frame == NULL)
329			return -1;
330		pos += 6;
331		encrypt = atoi(pos);
332		os_memset(&mgmt, 0, sizeof(mgmt));
333		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
334						  WLAN_FC_STYPE_DEAUTH);
335		os_memcpy(mgmt.da, addr, ETH_ALEN);
336		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
337		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
338		mgmt.u.deauth.reason_code = host_to_le16(reason);
339		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
340					     IEEE80211_HDRLEN +
341					     sizeof(mgmt.u.deauth),
342					     encrypt) < 0)
343			return -1;
344		return 0;
345	}
346
347#ifdef CONFIG_P2P_MANAGER
348	pos = os_strstr(txtaddr, " p2p=");
349	if (pos) {
350		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DEAUTH,
351					      atoi(pos + 5), addr);
352	}
353#endif /* CONFIG_P2P_MANAGER */
354
355	hostapd_drv_sta_deauth(hapd, addr, reason);
356	sta = ap_get_sta(hapd, addr);
357	if (sta)
358		ap_sta_deauthenticate(hapd, sta, reason);
359	else if (addr[0] == 0xff)
360		hostapd_free_stas(hapd);
361
362	return 0;
363}
364
365
366int hostapd_ctrl_iface_disassociate(struct hostapd_data *hapd,
367				    const char *txtaddr)
368{
369	u8 addr[ETH_ALEN];
370	struct sta_info *sta;
371	const char *pos;
372	u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
373
374	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DISASSOCIATE %s",
375		txtaddr);
376
377	if (hwaddr_aton(txtaddr, addr))
378		return -1;
379
380	pos = os_strstr(txtaddr, " reason=");
381	if (pos)
382		reason = atoi(pos + 8);
383
384	pos = os_strstr(txtaddr, " test=");
385	if (pos) {
386		struct ieee80211_mgmt mgmt;
387		int encrypt;
388		if (hapd->driver->send_frame == NULL)
389			return -1;
390		pos += 6;
391		encrypt = atoi(pos);
392		os_memset(&mgmt, 0, sizeof(mgmt));
393		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
394						  WLAN_FC_STYPE_DISASSOC);
395		os_memcpy(mgmt.da, addr, ETH_ALEN);
396		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
397		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
398		mgmt.u.disassoc.reason_code = host_to_le16(reason);
399		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
400					     IEEE80211_HDRLEN +
401					     sizeof(mgmt.u.deauth),
402					     encrypt) < 0)
403			return -1;
404		return 0;
405	}
406
407#ifdef CONFIG_P2P_MANAGER
408	pos = os_strstr(txtaddr, " p2p=");
409	if (pos) {
410		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DISASSOC,
411					      atoi(pos + 5), addr);
412	}
413#endif /* CONFIG_P2P_MANAGER */
414
415	hostapd_drv_sta_disassoc(hapd, addr, reason);
416	sta = ap_get_sta(hapd, addr);
417	if (sta)
418		ap_sta_disassociate(hapd, sta, reason);
419	else if (addr[0] == 0xff)
420		hostapd_free_stas(hapd);
421
422	return 0;
423}
424
425
426int hostapd_ctrl_iface_status(struct hostapd_data *hapd, char *buf,
427			      size_t buflen)
428{
429	struct hostapd_iface *iface = hapd->iface;
430	int len = 0, ret;
431	size_t i;
432
433	ret = os_snprintf(buf + len, buflen - len,
434			  "state=%s\n"
435			  "phy=%s\n"
436			  "freq=%d\n"
437			  "num_sta_non_erp=%d\n"
438			  "num_sta_no_short_slot_time=%d\n"
439			  "num_sta_no_short_preamble=%d\n"
440			  "olbc=%d\n"
441			  "num_sta_ht_no_gf=%d\n"
442			  "num_sta_no_ht=%d\n"
443			  "num_sta_ht_20_mhz=%d\n"
444			  "num_sta_ht40_intolerant=%d\n"
445			  "olbc_ht=%d\n"
446			  "ht_op_mode=0x%x\n",
447			  hostapd_state_text(iface->state),
448			  iface->phy,
449			  iface->freq,
450			  iface->num_sta_non_erp,
451			  iface->num_sta_no_short_slot_time,
452			  iface->num_sta_no_short_preamble,
453			  iface->olbc,
454			  iface->num_sta_ht_no_gf,
455			  iface->num_sta_no_ht,
456			  iface->num_sta_ht_20mhz,
457			  iface->num_sta_ht40_intolerant,
458			  iface->olbc_ht,
459			  iface->ht_op_mode);
460	if (os_snprintf_error(buflen - len, ret))
461		return len;
462	len += ret;
463
464	if (!iface->cac_started || !iface->dfs_cac_ms) {
465		ret = os_snprintf(buf + len, buflen - len,
466				  "cac_time_seconds=%d\n"
467				  "cac_time_left_seconds=N/A\n",
468				  iface->dfs_cac_ms / 1000);
469	} else {
470		/* CAC started and CAC time set - calculate remaining time */
471		struct os_reltime now;
472		unsigned int left_time;
473
474		os_reltime_age(&iface->dfs_cac_start, &now);
475		left_time = iface->dfs_cac_ms / 1000 - now.sec;
476		ret = os_snprintf(buf + len, buflen - len,
477				  "cac_time_seconds=%u\n"
478				  "cac_time_left_seconds=%u\n",
479				  iface->dfs_cac_ms / 1000,
480				  left_time);
481	}
482	if (os_snprintf_error(buflen - len, ret))
483		return len;
484	len += ret;
485
486	ret = os_snprintf(buf + len, buflen - len,
487			  "channel=%u\n"
488			  "secondary_channel=%d\n"
489			  "ieee80211n=%d\n"
490			  "ieee80211ac=%d\n"
491			  "vht_oper_chwidth=%d\n"
492			  "vht_oper_centr_freq_seg0_idx=%d\n"
493			  "vht_oper_centr_freq_seg1_idx=%d\n",
494			  iface->conf->channel,
495			  iface->conf->secondary_channel,
496			  iface->conf->ieee80211n,
497			  iface->conf->ieee80211ac,
498			  iface->conf->vht_oper_chwidth,
499			  iface->conf->vht_oper_centr_freq_seg0_idx,
500			  iface->conf->vht_oper_centr_freq_seg1_idx);
501	if (os_snprintf_error(buflen - len, ret))
502		return len;
503	len += ret;
504
505	for (i = 0; i < iface->num_bss; i++) {
506		struct hostapd_data *bss = iface->bss[i];
507		ret = os_snprintf(buf + len, buflen - len,
508				  "bss[%d]=%s\n"
509				  "bssid[%d]=" MACSTR "\n"
510				  "ssid[%d]=%s\n"
511				  "num_sta[%d]=%d\n",
512				  (int) i, bss->conf->iface,
513				  (int) i, MAC2STR(bss->own_addr),
514				  (int) i,
515				  wpa_ssid_txt(bss->conf->ssid.ssid,
516					       bss->conf->ssid.ssid_len),
517				  (int) i, bss->num_sta);
518		if (os_snprintf_error(buflen - len, ret))
519			return len;
520		len += ret;
521	}
522
523	return len;
524}
525
526
527int hostapd_parse_csa_settings(const char *pos,
528			       struct csa_settings *settings)
529{
530	char *end;
531
532	os_memset(settings, 0, sizeof(*settings));
533	settings->cs_count = strtol(pos, &end, 10);
534	if (pos == end) {
535		wpa_printf(MSG_ERROR, "chanswitch: invalid cs_count provided");
536		return -1;
537	}
538
539	settings->freq_params.freq = atoi(end);
540	if (settings->freq_params.freq == 0) {
541		wpa_printf(MSG_ERROR, "chanswitch: invalid freq provided");
542		return -1;
543	}
544
545#define SET_CSA_SETTING(str) \
546	do { \
547		const char *pos2 = os_strstr(pos, " " #str "="); \
548		if (pos2) { \
549			pos2 += sizeof(" " #str "=") - 1; \
550			settings->freq_params.str = atoi(pos2); \
551		} \
552	} while (0)
553
554	SET_CSA_SETTING(center_freq1);
555	SET_CSA_SETTING(center_freq2);
556	SET_CSA_SETTING(bandwidth);
557	SET_CSA_SETTING(sec_channel_offset);
558	settings->freq_params.ht_enabled = !!os_strstr(pos, " ht");
559	settings->freq_params.vht_enabled = !!os_strstr(pos, " vht");
560	settings->block_tx = !!os_strstr(pos, " blocktx");
561#undef SET_CSA_SETTING
562
563	return 0;
564}
565
566
567int hostapd_ctrl_iface_stop_ap(struct hostapd_data *hapd)
568{
569	return hostapd_drv_stop_ap(hapd);
570}
571
572
573int hostapd_ctrl_iface_pmksa_list(struct hostapd_data *hapd, char *buf,
574				  size_t len)
575{
576	return wpa_auth_pmksa_list(hapd->wpa_auth, buf, len);
577}
578
579
580void hostapd_ctrl_iface_pmksa_flush(struct hostapd_data *hapd)
581{
582	wpa_auth_pmksa_flush(hapd->wpa_auth);
583}
584