ctrl_iface_ap.c revision 1846323989242844f0e857458a8939fa5836429c 
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_BE24(pos, OUI_WFA);
254	pos += 3;
255	*pos++ = P2P_OUI_TYPE;
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, " test=");
286	if (pos) {
287		struct ieee80211_mgmt mgmt;
288		int encrypt;
289		if (hapd->driver->send_frame == NULL)
290			return -1;
291		pos += 6;
292		encrypt = atoi(pos);
293		os_memset(&mgmt, 0, sizeof(mgmt));
294		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
295						  WLAN_FC_STYPE_DEAUTH);
296		os_memcpy(mgmt.da, addr, ETH_ALEN);
297		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
298		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
299		mgmt.u.deauth.reason_code =
300			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
301		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
302					     IEEE80211_HDRLEN +
303					     sizeof(mgmt.u.deauth),
304					     encrypt) < 0)
305			return -1;
306		return 0;
307	}
308
309#ifdef CONFIG_P2P_MANAGER
310	pos = os_strstr(txtaddr, " p2p=");
311	if (pos) {
312		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DEAUTH,
313					      atoi(pos + 5), addr);
314	}
315#endif /* CONFIG_P2P_MANAGER */
316
317	pos = os_strstr(txtaddr, " reason=");
318	if (pos)
319		reason = atoi(pos + 8);
320
321	hostapd_drv_sta_deauth(hapd, addr, reason);
322	sta = ap_get_sta(hapd, addr);
323	if (sta)
324		ap_sta_deauthenticate(hapd, sta, reason);
325	else if (addr[0] == 0xff)
326		hostapd_free_stas(hapd);
327
328	return 0;
329}
330
331
332int hostapd_ctrl_iface_disassociate(struct hostapd_data *hapd,
333				    const char *txtaddr)
334{
335	u8 addr[ETH_ALEN];
336	struct sta_info *sta;
337	const char *pos;
338	u16 reason = WLAN_REASON_PREV_AUTH_NOT_VALID;
339
340	wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "CTRL_IFACE DISASSOCIATE %s",
341		txtaddr);
342
343	if (hwaddr_aton(txtaddr, addr))
344		return -1;
345
346	pos = os_strstr(txtaddr, " test=");
347	if (pos) {
348		struct ieee80211_mgmt mgmt;
349		int encrypt;
350		if (hapd->driver->send_frame == NULL)
351			return -1;
352		pos += 6;
353		encrypt = atoi(pos);
354		os_memset(&mgmt, 0, sizeof(mgmt));
355		mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
356						  WLAN_FC_STYPE_DISASSOC);
357		os_memcpy(mgmt.da, addr, ETH_ALEN);
358		os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
359		os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
360		mgmt.u.disassoc.reason_code =
361			host_to_le16(WLAN_REASON_PREV_AUTH_NOT_VALID);
362		if (hapd->driver->send_frame(hapd->drv_priv, (u8 *) &mgmt,
363					     IEEE80211_HDRLEN +
364					     sizeof(mgmt.u.deauth),
365					     encrypt) < 0)
366			return -1;
367		return 0;
368	}
369
370#ifdef CONFIG_P2P_MANAGER
371	pos = os_strstr(txtaddr, " p2p=");
372	if (pos) {
373		return p2p_manager_disconnect(hapd, WLAN_FC_STYPE_DISASSOC,
374					      atoi(pos + 5), addr);
375	}
376#endif /* CONFIG_P2P_MANAGER */
377
378	pos = os_strstr(txtaddr, " reason=");
379	if (pos)
380		reason = atoi(pos + 8);
381
382	hostapd_drv_sta_disassoc(hapd, addr, reason);
383	sta = ap_get_sta(hapd, addr);
384	if (sta)
385		ap_sta_disassociate(hapd, sta, reason);
386	else if (addr[0] == 0xff)
387		hostapd_free_stas(hapd);
388
389	return 0;
390}
391
392
393int hostapd_ctrl_iface_status(struct hostapd_data *hapd, char *buf,
394			      size_t buflen)
395{
396	struct hostapd_iface *iface = hapd->iface;
397	int len = 0, ret;
398	size_t i;
399
400	ret = os_snprintf(buf + len, buflen - len,
401			  "state=%s\n"
402			  "phy=%s\n"
403			  "freq=%d\n"
404			  "num_sta_non_erp=%d\n"
405			  "num_sta_no_short_slot_time=%d\n"
406			  "num_sta_no_short_preamble=%d\n"
407			  "olbc=%d\n"
408			  "num_sta_ht_no_gf=%d\n"
409			  "num_sta_no_ht=%d\n"
410			  "num_sta_ht_20_mhz=%d\n"
411			  "olbc_ht=%d\n"
412			  "ht_op_mode=0x%x\n",
413			  hostapd_state_text(iface->state),
414			  iface->phy,
415			  iface->freq,
416			  iface->num_sta_non_erp,
417			  iface->num_sta_no_short_slot_time,
418			  iface->num_sta_no_short_preamble,
419			  iface->olbc,
420			  iface->num_sta_ht_no_gf,
421			  iface->num_sta_no_ht,
422			  iface->num_sta_ht_20mhz,
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	ret = os_snprintf(buf + len, buflen - len,
430			  "channel=%u\n"
431			  "secondary_channel=%d\n"
432			  "ieee80211n=%d\n"
433			  "ieee80211ac=%d\n"
434			  "vht_oper_chwidth=%d\n"
435			  "vht_oper_centr_freq_seg0_idx=%d\n"
436			  "vht_oper_centr_freq_seg1_idx=%d\n",
437			  iface->conf->channel,
438			  iface->conf->secondary_channel,
439			  iface->conf->ieee80211n,
440			  iface->conf->ieee80211ac,
441			  iface->conf->vht_oper_chwidth,
442			  iface->conf->vht_oper_centr_freq_seg0_idx,
443			  iface->conf->vht_oper_centr_freq_seg1_idx);
444	if (ret < 0 || (size_t) ret >= buflen - len)
445		return len;
446	len += ret;
447
448	for (i = 0; i < iface->num_bss; i++) {
449		struct hostapd_data *bss = iface->bss[i];
450		ret = os_snprintf(buf + len, buflen - len,
451				  "bss[%d]=%s\n"
452				  "bssid[%d]=" MACSTR "\n"
453				  "ssid[%d]=%s\n"
454				  "num_sta[%d]=%d\n",
455				  (int) i, bss->conf->iface,
456				  (int) i, MAC2STR(bss->own_addr),
457				  (int) i,
458				  wpa_ssid_txt(bss->conf->ssid.ssid,
459					       bss->conf->ssid.ssid_len),
460				  (int) i, bss->num_sta);
461		if (ret < 0 || (size_t) ret >= buflen - len)
462			return len;
463		len += ret;
464	}
465
466	return len;
467}
468
469
470int hostapd_parse_csa_settings(const char *pos,
471			       struct csa_settings *settings)
472{
473	char *end;
474
475	if (!settings)
476		return -1;
477
478	os_memset(settings, 0, sizeof(*settings));
479	settings->cs_count = strtol(pos, &end, 10);
480	if (pos == end) {
481		wpa_printf(MSG_ERROR, "chanswitch: invalid cs_count provided");
482		return -1;
483	}
484
485	settings->freq_params.freq = atoi(end);
486	if (settings->freq_params.freq == 0) {
487		wpa_printf(MSG_ERROR, "chanswitch: invalid freq provided");
488		return -1;
489	}
490
491#define SET_CSA_SETTING(str) \
492	do { \
493		const char *pos2 = os_strstr(pos, " " #str "="); \
494		if (pos2) { \
495			pos2 += sizeof(" " #str "=") - 1; \
496			settings->freq_params.str = atoi(pos2); \
497		} \
498	} while (0)
499
500	SET_CSA_SETTING(center_freq1);
501	SET_CSA_SETTING(center_freq2);
502	SET_CSA_SETTING(bandwidth);
503	SET_CSA_SETTING(sec_channel_offset);
504	settings->freq_params.ht_enabled = !!os_strstr(pos, " ht");
505	settings->freq_params.vht_enabled = !!os_strstr(pos, " vht");
506	settings->block_tx = !!os_strstr(pos, " blocktx");
507#undef SET_CSA_SETTING
508
509	return 0;
510}
511