ctrl_iface_ap.c revision fb79edc9df1f20461e90e478363d207348213d35 
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	len = 0;
90	ret = os_snprintf(buf + len, buflen - len, MACSTR "\nflags=",
91			  MAC2STR(sta->addr));
92	if (ret < 0 || (size_t) ret >= buflen - len)
93		return len;
94	len += ret;
95
96	ret = ap_sta_flags_txt(sta->flags, buf + len, buflen - len);
97	if (ret < 0)
98		return len;
99	len += ret;
100
101	ret = os_snprintf(buf + len, buflen - len, "\naid=%d\ncapability=0x%x\n"
102			  "listen_interval=%d\nsupported_rates=",
103			  sta->aid, sta->capability, sta->listen_interval);
104	if (ret < 0 || (size_t) ret >= buflen - len)
105		return len;
106	len += ret;
107
108	for (i = 0; i < sta->supported_rates_len; i++) {
109		ret = os_snprintf(buf + len, buflen - len, "%02x%s",
110				  sta->supported_rates[i],
111				  i + 1 < sta->supported_rates_len ? " " : "");
112		if (ret < 0 || (size_t) ret >= buflen - len)
113			return len;
114		len += ret;
115	}
116
117	ret = os_snprintf(buf + len, buflen - len, "\ntimeout_next=%s\n",
118			  timeout_next_str(sta->timeout_next));
119	if (ret < 0 || (size_t) ret >= buflen - len)
120		return len;
121	len += ret;
122
123	res = ieee802_11_get_mib_sta(hapd, sta, buf + len, buflen - len);
124	if (res >= 0)
125		len += res;
126	res = wpa_get_mib_sta(sta->wpa_sm, buf + len, buflen - len);
127	if (res >= 0)
128		len += res;
129	res = ieee802_1x_get_mib_sta(hapd, sta, buf + len, buflen - len);
130	if (res >= 0)
131		len += res;
132	res = hostapd_wps_get_mib_sta(hapd, sta->addr, buf + len,
133				      buflen - len);
134	if (res >= 0)
135		len += res;
136	res = hostapd_p2p_get_mib_sta(hapd, sta, buf + len, buflen - len);
137	if (res >= 0)
138		len += res;
139
140	len += hostapd_get_sta_tx_rx(hapd, sta, buf + len, buflen - len);
141	len += hostapd_get_sta_conn_time(sta, buf + len, buflen - len);
142
143	return len;
144}
145
146
147int hostapd_ctrl_iface_sta_first(struct hostapd_data *hapd,
148				 char *buf, size_t buflen)
149{
150	return hostapd_ctrl_iface_sta_mib(hapd, hapd->sta_list, buf, buflen);
151}
152
153
154int hostapd_ctrl_iface_sta(struct hostapd_data *hapd, const char *txtaddr,
155			   char *buf, size_t buflen)
156{
157	u8 addr[ETH_ALEN];
158	int ret;
159	const char *pos;
160	struct sta_info *sta;
161
162	if (hwaddr_aton(txtaddr, addr)) {
163		ret = os_snprintf(buf, buflen, "FAIL\n");
164		if (ret < 0 || (size_t) ret >= buflen)
165			return 0;
166		return ret;
167	}
168
169	sta = ap_get_sta(hapd, addr);
170	if (sta == NULL)
171		return -1;
172
173	pos = os_strchr(txtaddr, ' ');
174	if (pos) {
175		pos++;
176
177#ifdef HOSTAPD_DUMP_STATE
178		if (os_strcmp(pos, "eapol") == 0) {
179			if (sta->eapol_sm == NULL)
180				return -1;
181			return eapol_auth_dump_state(sta->eapol_sm, buf,
182						     buflen);
183		}
184#endif /* HOSTAPD_DUMP_STATE */
185
186		return -1;
187	}
188
189	return hostapd_ctrl_iface_sta_mib(hapd, sta, buf, buflen);
190}
191
192
193int hostapd_ctrl_iface_sta_next(struct hostapd_data *hapd, const char *txtaddr,
194				char *buf, size_t buflen)
195{
196	u8 addr[ETH_ALEN];
197	struct sta_info *sta;
198	int ret;
199
200	if (hwaddr_aton(txtaddr, addr) ||
201	    (sta = ap_get_sta(hapd, addr)) == NULL) {
202		ret = os_snprintf(buf, buflen, "FAIL\n");
203		if (ret < 0 || (size_t) ret >= buflen)
204			return 0;
205		return ret;
206	}
207	return hostapd_ctrl_iface_sta_mib(hapd, sta->next, buf, buflen);
208}
209
210
211#ifdef CONFIG_P2P_MANAGER
212static int p2p_manager_disconnect(struct hostapd_data *hapd, u16 stype,
213				  u8 minor_reason_code, const u8 *addr)
214{
215	struct ieee80211_mgmt *mgmt;
216	int ret;
217	u8 *pos;
218
219	if (hapd->driver->send_frame == NULL)
220		return -1;
221
222	mgmt = os_zalloc(sizeof(*mgmt) + 100);
223	if (mgmt == NULL)
224		return -1;
225
226	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "P2P: Disconnect STA " MACSTR
227		" with minor reason code %u (stype=%u)",
228		MAC2STR(addr), minor_reason_code, stype);
229
230	mgmt->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT, stype);
231	os_memcpy(mgmt->da, addr, ETH_ALEN);
232	os_memcpy(mgmt->sa, hapd->own_addr, ETH_ALEN);
233	os_memcpy(mgmt->bssid, hapd->own_addr, ETH_ALEN);
234	if (stype == WLAN_FC_STYPE_DEAUTH) {
235		mgmt->u.deauth.reason_code =
236			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
237		pos = (u8 *) (&mgmt->u.deauth.reason_code + 1);
238	} else {
239		mgmt->u.disassoc.reason_code =
240			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
241		pos = (u8 *) (&mgmt->u.disassoc.reason_code + 1);
242	}
243
244	*pos++ = WLAN_EID_VENDOR_SPECIFIC;
245	*pos++ = 4 + 3 + 1;
246	WPA_PUT_BE24(pos, OUI_WFA);
247	pos += 3;
248	*pos++ = P2P_OUI_TYPE;
249
250	*pos++ = P2P_ATTR_MINOR_REASON_CODE;
251	WPA_PUT_LE16(pos, 1);
252	pos += 2;
253	*pos++ = minor_reason_code;
254
255	ret = hapd->driver->send_frame(hapd->drv_priv, (u8 *) mgmt,
256				       pos - (u8 *) mgmt, 1);
257	os_free(mgmt);
258
259	return ret < 0 ? -1 : 0;
260}
261#endif /* CONFIG_P2P_MANAGER */
262
263
264int hostapd_ctrl_iface_deauthenticate(struct hostapd_data *hapd,
265				      const char *txtaddr)
266{
267	u8 addr[ETH_ALEN];
268	struct sta_info *sta;
269	const char *pos;
270	u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
271
272	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DEAUTHENTICATE %s",
273		txtaddr);
274
275	if (hwaddr_aton(txtaddr, addr))
276		return -1;
277
278	pos = os_strstr(txtaddr, " test=");
279	if (pos) {
280		struct ieee80211_mgmt mgmt;
281		int encrypt;
282		if (hapd->driver->send_frame == NULL)
283			return -1;
284		pos += 6;
285		encrypt = atoi(pos);
286		os_memset(&mgmt, 0, sizeof(mgmt));
287		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
288						  WLAN_FC_STYPE_DEAUTH);
289		os_memcpy(mgmt.da, addr, ETH_ALEN);
290		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
291		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
292		mgmt.u.deauth.reason_code =
293			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
294		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
295					     IEEE80211_HDRLEN +
296					     sizeof(mgmt.u.deauth),
297					     encrypt) < 0)
298			return -1;
299		return 0;
300	}
301
302#ifdef CONFIG_P2P_MANAGER
303	pos = os_strstr(txtaddr, " p2p=");
304	if (pos) {
305		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DEAUTH,
306					      atoi(pos + 5), addr);
307	}
308#endif /* CONFIG_P2P_MANAGER */
309
310	pos = os_strstr(txtaddr, " reason=");
311	if (pos)
312		reason = atoi(pos + 8);
313
314	hostapd_drv_sta_deauth(hapd, addr, reason);
315	sta = ap_get_sta(hapd, addr);
316	if (sta)
317		ap_sta_deauthenticate(hapd, sta, reason);
318	else if (addr[0] == 0xff)
319		hostapd_free_stas(hapd);
320
321	return 0;
322}
323
324
325int hostapd_ctrl_iface_disassociate(struct hostapd_data *hapd,
326				    const char *txtaddr)
327{
328	u8 addr[ETH_ALEN];
329	struct sta_info *sta;
330	const char *pos;
331	u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
332
333	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DISASSOCIATE %s",
334		txtaddr);
335
336	if (hwaddr_aton(txtaddr, addr))
337		return -1;
338
339	pos = os_strstr(txtaddr, " test=");
340	if (pos) {
341		struct ieee80211_mgmt mgmt;
342		int encrypt;
343		if (hapd->driver->send_frame == NULL)
344			return -1;
345		pos += 6;
346		encrypt = atoi(pos);
347		os_memset(&mgmt, 0, sizeof(mgmt));
348		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
349						  WLAN_FC_STYPE_DISASSOC);
350		os_memcpy(mgmt.da, addr, ETH_ALEN);
351		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
352		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
353		mgmt.u.disassoc.reason_code =
354			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
355		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
356					     IEEE80211_HDRLEN +
357					     sizeof(mgmt.u.deauth),
358					     encrypt) < 0)
359			return -1;
360		return 0;
361	}
362
363#ifdef CONFIG_P2P_MANAGER
364	pos = os_strstr(txtaddr, " p2p=");
365	if (pos) {
366		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DISASSOC,
367					      atoi(pos + 5), addr);
368	}
369#endif /* CONFIG_P2P_MANAGER */
370
371	pos = os_strstr(txtaddr, " reason=");
372	if (pos)
373		reason = atoi(pos + 8);
374
375	hostapd_drv_sta_disassoc(hapd, addr, reason);
376	sta = ap_get_sta(hapd, addr);
377	if (sta)
378		ap_sta_disassociate(hapd, sta, reason);
379	else if (addr[0] == 0xff)
380		hostapd_free_stas(hapd);
381
382	return 0;
383}
384
385
386int hostapd_ctrl_iface_status(struct hostapd_data *hapd, char *buf,
387			      size_t buflen)
388{
389	struct hostapd_iface *iface = hapd->iface;
390	int len = 0, ret;
391	size_t i;
392
393	ret = os_snprintf(buf + len, buflen - len,
394			  "state=%s\n"
395			  "phy=%s\n"
396			  "freq=%d\n"
397			  "num_sta_non_erp=%d\n"
398			  "num_sta_no_short_slot_time=%d\n"
399			  "num_sta_no_short_preamble=%d\n"
400			  "olbc=%d\n"
401			  "num_sta_ht_no_gf=%d\n"
402			  "num_sta_no_ht=%d\n"
403			  "num_sta_ht_20_mhz=%d\n"
404			  "olbc_ht=%d\n"
405			  "ht_op_mode=0x%x\n",
406			  hostapd_state_text(iface->state),
407			  iface->phy,
408			  iface->freq,
409			  iface->num_sta_non_erp,
410			  iface->num_sta_no_short_slot_time,
411			  iface->num_sta_no_short_preamble,
412			  iface->olbc,
413			  iface->num_sta_ht_no_gf,
414			  iface->num_sta_no_ht,
415			  iface->num_sta_ht_20mhz,
416			  iface->olbc_ht,
417			  iface->ht_op_mode);
418	if (ret < 0 || (size_t) ret >= buflen - len)
419		return len;
420	len += ret;
421
422	ret = os_snprintf(buf + len, buflen - len,
423			  "channel=%u\n"
424			  "secondary_channel=%d\n"
425			  "ieee80211n=%d\n"
426			  "ieee80211ac=%d\n"
427			  "vht_oper_chwidth=%d\n"
428			  "vht_oper_centr_freq_seg0_idx=%d\n"
429			  "vht_oper_centr_freq_seg1_idx=%d\n",
430			  iface->conf->channel,
431			  iface->conf->secondary_channel,
432			  iface->conf->ieee80211n,
433			  iface->conf->ieee80211ac,
434			  iface->conf->vht_oper_chwidth,
435			  iface->conf->vht_oper_centr_freq_seg0_idx,
436			  iface->conf->vht_oper_centr_freq_seg1_idx);
437	if (ret < 0 || (size_t) ret >= buflen - len)
438		return len;
439	len += ret;
440
441	for (i = 0; i < iface->num_bss; i++) {
442		struct hostapd_data *bss = iface->bss[i];
443		ret = os_snprintf(buf + len, buflen - len,
444				  "bss[%d]=%s\n"
445				  "bssid[%d]=" MACSTR "\n"
446				  "ssid[%d]=%s\n"
447				  "num_sta[%d]=%d\n",
448				  (int) i, bss->conf->iface,
449				  (int) i, MAC2STR(bss->own_addr),
450				  (int) i,
451				  wpa_ssid_txt(bss->conf->ssid.ssid,
452					       bss->conf->ssid.ssid_len),
453				  (int) i, bss->num_sta);
454		if (ret < 0 || (size_t) ret >= buflen - len)
455			return len;
456		len += ret;
457	}
458
459	return len;
460}
461
462
463int hostapd_parse_csa_settings(const char *pos,
464			       struct csa_settings *settings)
465{
466	char *end;
467
468	if (!settings)
469		return -1;
470
471	os_memset(settings, 0, sizeof(*settings));
472	settings->cs_count = strtol(pos, &end, 10);
473	if (pos == end) {
474		wpa_printf(MSG_ERROR, "chanswitch: invalid cs_count provided");
475		return -1;
476	}
477
478	settings->freq_params.freq = atoi(end);
479	if (settings->freq_params.freq == 0) {
480		wpa_printf(MSG_ERROR, "chanswitch: invalid freq provided");
481		return -1;
482	}
483
484#define SET_CSA_SETTING(str) \
485	do { \
486		const char *pos2 = os_strstr(pos, " " #str "="); \
487		if (pos2) { \
488			pos2 += sizeof(" " #str "=") - 1; \
489			settings->freq_params.str = atoi(pos2); \
490		} \
491	} while (0)
492
493	SET_CSA_SETTING(center_freq1);
494	SET_CSA_SETTING(center_freq2);
495	SET_CSA_SETTING(bandwidth);
496	SET_CSA_SETTING(sec_channel_offset);
497	settings->freq_params.ht_enabled = !!os_strstr(pos, " ht");
498	settings->freq_params.vht_enabled = !!os_strstr(pos, " vht");
499	settings->block_tx = !!os_strstr(pos, " blocktx");
500#undef SET_CSA_SETTING
501
502	return 0;
503}
504