1/*
2 * Control interface for shared AP commands
3 * Copyright (c) 2004-2013, 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 "eapol_auth/eapol_auth_sm.h"
14#include "hostapd.h"
15#include "ieee802_1x.h"
16#include "wpa_auth.h"
17#include "ieee802_11.h"
18#include "sta_info.h"
19#include "wps_hostapd.h"
20#include "p2p_hostapd.h"
21#include "ctrl_iface_ap.h"
22#include "ap_drv_ops.h"
23
24
25static int hostapd_get_sta_tx_rx(struct hostapd_data *hapd,
26				 struct sta_info *sta,
27				 char *buf, size_t buflen)
28{
29	struct hostap_sta_driver_data data;
30	int ret;
31
32	if (hostapd_drv_read_sta_data(hapd, &data, sta->addr) < 0)
33		return 0;
34
35	ret = os_snprintf(buf, buflen, "rx_packets=%lu\ntx_packets=%lu\n"
36			  "rx_bytes=%lu\ntx_bytes=%lu\n",
37			  data.rx_packets, data.tx_packets,
38			  data.rx_bytes, data.tx_bytes);
39	if (ret < 0 || (size_t) ret >= buflen)
40		return 0;
41	return ret;
42}
43
44
45static int hostapd_get_sta_conn_time(struct sta_info *sta,
46				     char *buf, size_t buflen)
47{
48	struct os_reltime age;
49	int ret;
50
51	if (!sta->connected_time.sec)
52		return 0;
53
54	os_reltime_age(&sta->connected_time, &age);
55
56	ret = os_snprintf(buf, buflen, "connected_time=%u\n",
57			  (unsigned int) age.sec);
58	if (ret < 0 || (size_t) ret >= buflen)
59		return 0;
60	return ret;
61}
62
63
64static const char * timeout_next_str(int val)
65{
66	switch (val) {
67	case STA_NULLFUNC:
68		return "NULLFUNC POLL";
69	case STA_DISASSOC:
70		return "DISASSOC";
71	case STA_DEAUTH:
72		return "DEAUTH";
73	case STA_REMOVE:
74		return "REMOVE";
75	case STA_DISASSOC_FROM_CLI:
76		return "DISASSOC_FROM_CLI";
77	}
78
79	return "?";
80}
81
82
83static int hostapd_ctrl_iface_sta_mib(struct hostapd_data *hapd,
84				      struct sta_info *sta,
85				      char *buf, size_t buflen)
86{
87	int len, res, ret, i;
88
89	if (!sta)
90		return 0;
91
92	len = 0;
93	ret = os_snprintf(buf + len, buflen - len, MACSTR "\nflags=",
94			  MAC2STR(sta->addr));
95	if (ret < 0 || (size_t) ret >= buflen - len)
96		return len;
97	len += ret;
98
99	ret = ap_sta_flags_txt(sta->flags, buf + len, buflen - len);
100	if (ret < 0)
101		return len;
102	len += ret;
103
104	ret = os_snprintf(buf + len, buflen - len, "\naid=%d\ncapability=0x%x\n"
105			  "listen_interval=%d\nsupported_rates=",
106			  sta->aid, sta->capability, sta->listen_interval);
107	if (ret < 0 || (size_t) ret >= buflen - len)
108		return len;
109	len += ret;
110
111	for (i = 0; i < sta->supported_rates_len; i++) {
112		ret = os_snprintf(buf + len, buflen - len, "%02x%s",
113				  sta->supported_rates[i],
114				  i + 1 < sta->supported_rates_len ? " " : "");
115		if (ret < 0 || (size_t) ret >= buflen - len)
116			return len;
117		len += ret;
118	}
119
120	ret = os_snprintf(buf + len, buflen - len, "\ntimeout_next=%s\n",
121			  timeout_next_str(sta->timeout_next));
122	if (ret < 0 || (size_t) ret >= buflen - len)
123		return len;
124	len += ret;
125
126	res = ieee802_11_get_mib_sta(hapd, sta, buf + len, buflen - len);
127	if (res >= 0)
128		len += res;
129	res = wpa_get_mib_sta(sta->wpa_sm, buf + len, buflen - len);
130	if (res >= 0)
131		len += res;
132	res = ieee802_1x_get_mib_sta(hapd, sta, buf + len, buflen - len);
133	if (res >= 0)
134		len += res;
135	res = hostapd_wps_get_mib_sta(hapd, sta->addr, buf + len,
136				      buflen - len);
137	if (res >= 0)
138		len += res;
139	res = hostapd_p2p_get_mib_sta(hapd, sta, buf + len, buflen - len);
140	if (res >= 0)
141		len += res;
142
143	len += hostapd_get_sta_tx_rx(hapd, sta, buf + len, buflen - len);
144	len += hostapd_get_sta_conn_time(sta, buf + len, buflen - len);
145
146	return len;
147}
148
149
150int hostapd_ctrl_iface_sta_first(struct hostapd_data *hapd,
151				 char *buf, size_t buflen)
152{
153	return hostapd_ctrl_iface_sta_mib(hapd, hapd->sta_list, buf, buflen);
154}
155
156
157int hostapd_ctrl_iface_sta(struct hostapd_data *hapd, const char *txtaddr,
158			   char *buf, size_t buflen)
159{
160	u8 addr[ETH_ALEN];
161	int ret;
162	const char *pos;
163	struct sta_info *sta;
164
165	if (hwaddr_aton(txtaddr, addr)) {
166		ret = os_snprintf(buf, buflen, "FAIL\n");
167		if (ret < 0 || (size_t) ret >= buflen)
168			return 0;
169		return ret;
170	}
171
172	sta = ap_get_sta(hapd, addr);
173	if (sta == NULL)
174		return -1;
175
176	pos = os_strchr(txtaddr, ' ');
177	if (pos) {
178		pos++;
179
180#ifdef HOSTAPD_DUMP_STATE
181		if (os_strcmp(pos, "eapol") == 0) {
182			if (sta->eapol_sm == NULL)
183				return -1;
184			return eapol_auth_dump_state(sta->eapol_sm, buf,
185						     buflen);
186		}
187#endif /* HOSTAPD_DUMP_STATE */
188
189		return -1;
190	}
191
192	return hostapd_ctrl_iface_sta_mib(hapd, sta, buf, buflen);
193}
194
195
196int hostapd_ctrl_iface_sta_next(struct hostapd_data *hapd, const char *txtaddr,
197				char *buf, size_t buflen)
198{
199	u8 addr[ETH_ALEN];
200	struct sta_info *sta;
201	int ret;
202
203	if (hwaddr_aton(txtaddr, addr) ||
204	    (sta = ap_get_sta(hapd, addr)) == NULL) {
205		ret = os_snprintf(buf, buflen, "FAIL\n");
206		if (ret < 0 || (size_t) ret >= buflen)
207			return 0;
208		return ret;
209	}
210
211	if (!sta->next)
212		return 0;
213
214	return hostapd_ctrl_iface_sta_mib(hapd, sta->next, buf, buflen);
215}
216
217
218#ifdef CONFIG_P2P_MANAGER
219static int p2p_manager_disconnect(struct hostapd_data *hapd, u16 stype,
220				  u8 minor_reason_code, const u8 *addr)
221{
222	struct ieee80211_mgmt *mgmt;
223	int ret;
224	u8 *pos;
225
226	if (hapd->driver->send_frame == NULL)
227		return -1;
228
229	mgmt = os_zalloc(sizeof(*mgmt) + 100);
230	if (mgmt == NULL)
231		return -1;
232
233	mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, stype);
234	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "P2P: Disconnect STA " MACSTR
235		" with minor reason code %u (stype=%u (%s))",
236		MAC2STR(addr), minor_reason_code, stype,
237		fc2str(mgmt->frame_control));
238
239	os_memcpy(mgmt->da, addr, ETH_ALEN);
240	os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
241	os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
242	if (stype == WLAN_FC_STYPE_DEAUTH) {
243		mgmt->u.deauth.reason_code =
244			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
245		pos = (u8 *) (&mgmt->u.deauth.reason_code + 1);
246	} else {
247		mgmt->u.disassoc.reason_code =
248			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
249		pos = (u8 *) (&mgmt->u.disassoc.reason_code + 1);
250	}
251
252	*pos++ = WLAN_EID_VENDOR_SPECIFIC;
253	*pos++ = 4 + 3 + 1;
254	WPA_PUT_BE32(pos, P2P_IE_VENDOR_TYPE);
255	pos += 4;
256
257	*pos++ = P2P_ATTR_MINOR_REASON_CODE;
258	WPA_PUT_LE16(pos, 1);
259	pos += 2;
260	*pos++ = minor_reason_code;
261
262	ret = hapd->driver->send_frame(hapd->drv_priv, (u8 *) mgmt,
263				       pos - (u8 *) mgmt, 1);
264	os_free(mgmt);
265
266	return ret < 0 ? -1 : 0;
267}
268#endif /* CONFIG_P2P_MANAGER */
269
270
271int hostapd_ctrl_iface_deauthenticate(struct hostapd_data *hapd,
272				      const char *txtaddr)
273{
274	u8 addr[ETH_ALEN];
275	struct sta_info *sta;
276	const char *pos;
277	u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
278
279	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DEAUTHENTICATE %s",
280		txtaddr);
281
282	if (hwaddr_aton(txtaddr, addr))
283		return -1;
284
285	pos = os_strstr(txtaddr, " reason=");
286	if (pos)
287		reason = atoi(pos + 8);
288
289	pos = os_strstr(txtaddr, " test=");
290	if (pos) {
291		struct ieee80211_mgmt mgmt;
292		int encrypt;
293		if (hapd->driver->send_frame == NULL)
294			return -1;
295		pos += 6;
296		encrypt = atoi(pos);
297		os_memset(&mgmt, 0, sizeof(mgmt));
298		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
299						  WLAN_FC_STYPE_DEAUTH);
300		os_memcpy(mgmt.da, addr, ETH_ALEN);
301		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
302		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
303		mgmt.u.deauth.reason_code = host_to_le16(reason);
304		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
305					     IEEE80211_HDRLEN +
306					     sizeof(mgmt.u.deauth),
307					     encrypt) < 0)
308			return -1;
309		return 0;
310	}
311
312#ifdef CONFIG_P2P_MANAGER
313	pos = os_strstr(txtaddr, " p2p=");
314	if (pos) {
315		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DEAUTH,
316					      atoi(pos + 5), addr);
317	}
318#endif /* CONFIG_P2P_MANAGER */
319
320	hostapd_drv_sta_deauth(hapd, addr, reason);
321	sta = ap_get_sta(hapd, addr);
322	if (sta)
323		ap_sta_deauthenticate(hapd, sta, reason);
324	else if (addr[0] == 0xff)
325		hostapd_free_stas(hapd);
326
327	return 0;
328}
329
330
331int hostapd_ctrl_iface_disassociate(struct hostapd_data *hapd,
332				    const char *txtaddr)
333{
334	u8 addr[ETH_ALEN];
335	struct sta_info *sta;
336	const char *pos;
337	u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
338
339	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DISASSOCIATE %s",
340		txtaddr);
341
342	if (hwaddr_aton(txtaddr, addr))
343		return -1;
344
345	pos = os_strstr(txtaddr, " reason=");
346	if (pos)
347		reason = atoi(pos + 8);
348
349	pos = os_strstr(txtaddr, " test=");
350	if (pos) {
351		struct ieee80211_mgmt mgmt;
352		int encrypt;
353		if (hapd->driver->send_frame == NULL)
354			return -1;
355		pos += 6;
356		encrypt = atoi(pos);
357		os_memset(&mgmt, 0, sizeof(mgmt));
358		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
359						  WLAN_FC_STYPE_DISASSOC);
360		os_memcpy(mgmt.da, addr, ETH_ALEN);
361		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
362		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
363		mgmt.u.disassoc.reason_code = host_to_le16(reason);
364		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
365					     IEEE80211_HDRLEN +
366					     sizeof(mgmt.u.deauth),
367					     encrypt) < 0)
368			return -1;
369		return 0;
370	}
371
372#ifdef CONFIG_P2P_MANAGER
373	pos = os_strstr(txtaddr, " p2p=");
374	if (pos) {
375		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DISASSOC,
376					      atoi(pos + 5), addr);
377	}
378#endif /* CONFIG_P2P_MANAGER */
379
380	hostapd_drv_sta_disassoc(hapd, addr, reason);
381	sta = ap_get_sta(hapd, addr);
382	if (sta)
383		ap_sta_disassociate(hapd, sta, reason);
384	else if (addr[0] == 0xff)
385		hostapd_free_stas(hapd);
386
387	return 0;
388}
389
390
391int hostapd_ctrl_iface_status(struct hostapd_data *hapd, char *buf,
392			      size_t buflen)
393{
394	struct hostapd_iface *iface = hapd->iface;
395	int len = 0, ret;
396	size_t i;
397
398	ret = os_snprintf(buf + len, buflen - len,
399			  "state=%s\n"
400			  "phy=%s\n"
401			  "freq=%d\n"
402			  "num_sta_non_erp=%d\n"
403			  "num_sta_no_short_slot_time=%d\n"
404			  "num_sta_no_short_preamble=%d\n"
405			  "olbc=%d\n"
406			  "num_sta_ht_no_gf=%d\n"
407			  "num_sta_no_ht=%d\n"
408			  "num_sta_ht_20_mhz=%d\n"
409			  "num_sta_ht40_intolerant=%d\n"
410			  "olbc_ht=%d\n"
411			  "ht_op_mode=0x%x\n",
412			  hostapd_state_text(iface->state),
413			  iface->phy,
414			  iface->freq,
415			  iface->num_sta_non_erp,
416			  iface->num_sta_no_short_slot_time,
417			  iface->num_sta_no_short_preamble,
418			  iface->olbc,
419			  iface->num_sta_ht_no_gf,
420			  iface->num_sta_no_ht,
421			  iface->num_sta_ht_20mhz,
422			  iface->num_sta_ht40_intolerant,
423			  iface->olbc_ht,
424			  iface->ht_op_mode);
425	if (ret < 0 || (size_t) ret >= buflen - len)
426		return len;
427	len += ret;
428
429	if (!iface->cac_started || !iface->dfs_cac_ms) {
430		ret = os_snprintf(buf + len, buflen - len,
431				  "cac_time_seconds=%d\n"
432				  "cac_time_left_seconds=N/A\n",
433				  iface->dfs_cac_ms / 1000);
434	} else {
435		/* CAC started and CAC time set - calculate remaining time */
436		struct os_reltime now;
437		unsigned int left_time;
438
439		os_reltime_age(&iface->dfs_cac_start, &now);
440		left_time = iface->dfs_cac_ms / 1000 - now.sec;
441		ret = os_snprintf(buf + len, buflen - len,
442				  "cac_time_seconds=%u\n"
443				  "cac_time_left_seconds=%u\n",
444				  iface->dfs_cac_ms / 1000,
445				  left_time);
446	}
447	if (ret < 0 || (size_t) ret >= buflen - len)
448		return len;
449	len += ret;
450
451	ret = os_snprintf(buf + len, buflen - len,
452			  "channel=%u\n"
453			  "secondary_channel=%d\n"
454			  "ieee80211n=%d\n"
455			  "ieee80211ac=%d\n"
456			  "vht_oper_chwidth=%d\n"
457			  "vht_oper_centr_freq_seg0_idx=%d\n"
458			  "vht_oper_centr_freq_seg1_idx=%d\n",
459			  iface->conf->channel,
460			  iface->conf->secondary_channel,
461			  iface->conf->ieee80211n,
462			  iface->conf->ieee80211ac,
463			  iface->conf->vht_oper_chwidth,
464			  iface->conf->vht_oper_centr_freq_seg0_idx,
465			  iface->conf->vht_oper_centr_freq_seg1_idx);
466	if (ret < 0 || (size_t) ret >= buflen - len)
467		return len;
468	len += ret;
469
470	for (i = 0; i < iface->num_bss; i++) {
471		struct hostapd_data *bss = iface->bss[i];
472		ret = os_snprintf(buf + len, buflen - len,
473				  "bss[%d]=%s\n"
474				  "bssid[%d]=" MACSTR "\n"
475				  "ssid[%d]=%s\n"
476				  "num_sta[%d]=%d\n",
477				  (int) i, bss->conf->iface,
478				  (int) i, MAC2STR(bss->own_addr),
479				  (int) i,
480				  wpa_ssid_txt(bss->conf->ssid.ssid,
481					       bss->conf->ssid.ssid_len),
482				  (int) i, bss->num_sta);
483		if (ret < 0 || (size_t) ret >= buflen - len)
484			return len;
485		len += ret;
486	}
487
488	return len;
489}
490
491
492int hostapd_parse_csa_settings(const char *pos,
493			       struct csa_settings *settings)
494{
495	char *end;
496
497	os_memset(settings, 0, sizeof(*settings));
498	settings->cs_count = strtol(pos, &end, 10);
499	if (pos == end) {
500		wpa_printf(MSG_ERROR, "chanswitch: invalid cs_count provided");
501		return -1;
502	}
503
504	settings->freq_params.freq = atoi(end);
505	if (settings->freq_params.freq == 0) {
506		wpa_printf(MSG_ERROR, "chanswitch: invalid freq provided");
507		return -1;
508	}
509
510#define SET_CSA_SETTING(str) \
511	do { \
512		const char *pos2 = os_strstr(pos, " " #str "="); \
513		if (pos2) { \
514			pos2 += sizeof(" " #str "=") - 1; \
515			settings->freq_params.str = atoi(pos2); \
516		} \
517	} while (0)
518
519	SET_CSA_SETTING(center_freq1);
520	SET_CSA_SETTING(center_freq2);
521	SET_CSA_SETTING(bandwidth);
522	SET_CSA_SETTING(sec_channel_offset);
523	settings->freq_params.ht_enabled = !!os_strstr(pos, " ht");
524	settings->freq_params.vht_enabled = !!os_strstr(pos, " vht");
525	settings->block_tx = !!os_strstr(pos, " blocktx");
526#undef SET_CSA_SETTING
527
528	return 0;
529}
530