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
26static 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
46static 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
65static 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
84static 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
167int 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
174int 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
213int 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
236static 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
288int 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
348int 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
408int 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
509int 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
549int hostapd_ctrl_iface_stop_ap(struct hostapd_data *hapd)
550{
551	return hostapd_drv_stop_ap(hapd);
552}
553