ctrl_iface_ap.c revision 7832adbbd72a1b784b7fb74a71a5d4085b0cb0d3 
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	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "P2P: Disconnect STA " MACSTR
234		" with minor reason code %u (stype=%u)",
235		MAC2STR(addr), minor_reason_code, stype);
236
237	mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, stype);
238	os_memcpy(mgmt->da, addr, ETH_ALEN);
239	os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
240	os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
241	if (stype == WLAN_FC_STYPE_DEAUTH) {
242		mgmt->u.deauth.reason_code =
243			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
244		pos = (u8 *) (&mgmt->u.deauth.reason_code + 1);
245	} else {
246		mgmt->u.disassoc.reason_code =
247			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
248		pos = (u8 *) (&mgmt->u.disassoc.reason_code + 1);
249	}
250
251	*pos++ = WLAN_EID_VENDOR_SPECIFIC;
252	*pos++ = 4 + 3 + 1;
253	WPA_PUT_BE32(pos, P2P_IE_VENDOR_TYPE);
254	pos += 4;
255
256	*pos++ = P2P_ATTR_MINOR_REASON_CODE;
257	WPA_PUT_LE16(pos, 1);
258	pos += 2;
259	*pos++ = minor_reason_code;
260
261	ret = hapd->driver->send_frame(hapd->drv_priv, (u8 *) mgmt,
262				       pos - (u8 *) mgmt, 1);
263	os_free(mgmt);
264
265	return ret < 0 ? -1 : 0;
266}
267#endif /* CONFIG_P2P_MANAGER */
268
269
270int hostapd_ctrl_iface_deauthenticate(struct hostapd_data *hapd,
271				      const char *txtaddr)
272{
273	u8 addr[ETH_ALEN];
274	struct sta_info *sta;
275	const char *pos;
276	u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
277
278	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DEAUTHENTICATE %s",
279		txtaddr);
280
281	if (hwaddr_aton(txtaddr, addr))
282		return -1;
283
284	pos = os_strstr(txtaddr, " reason=");
285	if (pos)
286		reason = atoi(pos + 8);
287
288	pos = os_strstr(txtaddr, " test=");
289	if (pos) {
290		struct ieee80211_mgmt mgmt;
291		int encrypt;
292		if (hapd->driver->send_frame == NULL)
293			return -1;
294		pos += 6;
295		encrypt = atoi(pos);
296		os_memset(&mgmt, 0, sizeof(mgmt));
297		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
298						  WLAN_FC_STYPE_DEAUTH);
299		os_memcpy(mgmt.da, addr, ETH_ALEN);
300		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
301		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
302		mgmt.u.deauth.reason_code = host_to_le16(reason);
303		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
304					     IEEE80211_HDRLEN +
305					     sizeof(mgmt.u.deauth),
306					     encrypt) < 0)
307			return -1;
308		return 0;
309	}
310
311#ifdef CONFIG_P2P_MANAGER
312	pos = os_strstr(txtaddr, " p2p=");
313	if (pos) {
314		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DEAUTH,
315					      atoi(pos + 5), addr);
316	}
317#endif /* CONFIG_P2P_MANAGER */
318
319	hostapd_drv_sta_deauth(hapd, addr, reason);
320	sta = ap_get_sta(hapd, addr);
321	if (sta)
322		ap_sta_deauthenticate(hapd, sta, reason);
323	else if (addr[0] == 0xff)
324		hostapd_free_stas(hapd);
325
326	return 0;
327}
328
329
330int hostapd_ctrl_iface_disassociate(struct hostapd_data *hapd,
331				    const char *txtaddr)
332{
333	u8 addr[ETH_ALEN];
334	struct sta_info *sta;
335	const char *pos;
336	u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
337
338	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DISASSOCIATE %s",
339		txtaddr);
340
341	if (hwaddr_aton(txtaddr, addr))
342		return -1;
343
344	pos = os_strstr(txtaddr, " reason=");
345	if (pos)
346		reason = atoi(pos + 8);
347
348	pos = os_strstr(txtaddr, " test=");
349	if (pos) {
350		struct ieee80211_mgmt mgmt;
351		int encrypt;
352		if (hapd->driver->send_frame == NULL)
353			return -1;
354		pos += 6;
355		encrypt = atoi(pos);
356		os_memset(&mgmt, 0, sizeof(mgmt));
357		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
358						  WLAN_FC_STYPE_DISASSOC);
359		os_memcpy(mgmt.da, addr, ETH_ALEN);
360		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
361		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
362		mgmt.u.disassoc.reason_code = host_to_le16(reason);
363		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
364					     IEEE80211_HDRLEN +
365					     sizeof(mgmt.u.deauth),
366					     encrypt) < 0)
367			return -1;
368		return 0;
369	}
370
371#ifdef CONFIG_P2P_MANAGER
372	pos = os_strstr(txtaddr, " p2p=");
373	if (pos) {
374		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DISASSOC,
375					      atoi(pos + 5), addr);
376	}
377#endif /* CONFIG_P2P_MANAGER */
378
379	hostapd_drv_sta_disassoc(hapd, addr, reason);
380	sta = ap_get_sta(hapd, addr);
381	if (sta)
382		ap_sta_disassociate(hapd, sta, reason);
383	else if (addr[0] == 0xff)
384		hostapd_free_stas(hapd);
385
386	return 0;
387}
388
389
390int hostapd_ctrl_iface_status(struct hostapd_data *hapd, char *buf,
391			      size_t buflen)
392{
393	struct hostapd_iface *iface = hapd->iface;
394	int len = 0, ret;
395	size_t i;
396
397	ret = os_snprintf(buf + len, buflen - len,
398			  "state=%s\n"
399			  "phy=%s\n"
400			  "freq=%d\n"
401			  "num_sta_non_erp=%d\n"
402			  "num_sta_no_short_slot_time=%d\n"
403			  "num_sta_no_short_preamble=%d\n"
404			  "olbc=%d\n"
405			  "num_sta_ht_no_gf=%d\n"
406			  "num_sta_no_ht=%d\n"
407			  "num_sta_ht_20_mhz=%d\n"
408			  "num_sta_ht40_intolerant=%d\n"
409			  "olbc_ht=%d\n"
410			  "ht_op_mode=0x%x\n",
411			  hostapd_state_text(iface->state),
412			  iface->phy,
413			  iface->freq,
414			  iface->num_sta_non_erp,
415			  iface->num_sta_no_short_slot_time,
416			  iface->num_sta_no_short_preamble,
417			  iface->olbc,
418			  iface->num_sta_ht_no_gf,
419			  iface->num_sta_no_ht,
420			  iface->num_sta_ht_20mhz,
421			  iface->num_sta_ht40_intolerant,
422			  iface->olbc_ht,
423			  iface->ht_op_mode);
424	if (ret < 0 || (size_t) ret >= buflen - len)
425		return len;
426	len += ret;
427
428	if (!iface->cac_started || !iface->dfs_cac_ms) {
429		ret = os_snprintf(buf + len, buflen - len,
430				  "cac_time_seconds=%d\n"
431				  "cac_time_left_seconds=N/A\n",
432				  iface->dfs_cac_ms / 1000);
433	} else {
434		/* CAC started and CAC time set - calculate remaining time */
435		struct os_reltime now;
436		unsigned int left_time;
437
438		os_reltime_age(&iface->dfs_cac_start, &now);
439		left_time = iface->dfs_cac_ms / 1000 - now.sec;
440		ret = os_snprintf(buf + len, buflen - len,
441				  "cac_time_seconds=%u\n"
442				  "cac_time_left_seconds=%u\n",
443				  iface->dfs_cac_ms / 1000,
444				  left_time);
445	}
446	if (ret < 0 || (size_t) ret >= buflen - len)
447		return len;
448	len += ret;
449
450	ret = os_snprintf(buf + len, buflen - len,
451			  "channel=%u\n"
452			  "secondary_channel=%d\n"
453			  "ieee80211n=%d\n"
454			  "ieee80211ac=%d\n"
455			  "vht_oper_chwidth=%d\n"
456			  "vht_oper_centr_freq_seg0_idx=%d\n"
457			  "vht_oper_centr_freq_seg1_idx=%d\n",
458			  iface->conf->channel,
459			  iface->conf->secondary_channel,
460			  iface->conf->ieee80211n,
461			  iface->conf->ieee80211ac,
462			  iface->conf->vht_oper_chwidth,
463			  iface->conf->vht_oper_centr_freq_seg0_idx,
464			  iface->conf->vht_oper_centr_freq_seg1_idx);
465	if (ret < 0 || (size_t) ret >= buflen - len)
466		return len;
467	len += ret;
468
469	for (i = 0; i < iface->num_bss; i++) {
470		struct hostapd_data *bss = iface->bss[i];
471		ret = os_snprintf(buf + len, buflen - len,
472				  "bss[%d]=%s\n"
473				  "bssid[%d]=" MACSTR "\n"
474				  "ssid[%d]=%s\n"
475				  "num_sta[%d]=%d\n",
476				  (int) i, bss->conf->iface,
477				  (int) i, MAC2STR(bss->own_addr),
478				  (int) i,
479				  wpa_ssid_txt(bss->conf->ssid.ssid,
480					       bss->conf->ssid.ssid_len),
481				  (int) i, bss->num_sta);
482		if (ret < 0 || (size_t) ret >= buflen - len)
483			return len;
484		len += ret;
485	}
486
487	return len;
488}
489
490
491int hostapd_parse_csa_settings(const char *pos,
492			       struct csa_settings *settings)
493{
494	char *end;
495
496	os_memset(settings, 0, sizeof(*settings));
497	settings->cs_count = strtol(pos, &end, 10);
498	if (pos == end) {
499		wpa_printf(MSG_ERROR, "chanswitch: invalid cs_count provided");
500		return -1;
501	}
502
503	settings->freq_params.freq = atoi(end);
504	if (settings->freq_params.freq == 0) {
505		wpa_printf(MSG_ERROR, "chanswitch: invalid freq provided");
506		return -1;
507	}
508
509#define SET_CSA_SETTING(str) \
510	do { \
511		const char *pos2 = os_strstr(pos, " " #str "="); \
512		if (pos2) { \
513			pos2 += sizeof(" " #str "=") - 1; \
514			settings->freq_params.str = atoi(pos2); \
515		} \
516	} while (0)
517
518	SET_CSA_SETTING(center_freq1);
519	SET_CSA_SETTING(center_freq2);
520	SET_CSA_SETTING(bandwidth);
521	SET_CSA_SETTING(sec_channel_offset);
522	settings->freq_params.ht_enabled = !!os_strstr(pos, " ht");
523	settings->freq_params.vht_enabled = !!os_strstr(pos, " vht");
524	settings->block_tx = !!os_strstr(pos, " blocktx");
525#undef SET_CSA_SETTING
526
527	return 0;
528}
529