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
hostapd_get_sta_tx_rx(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)25 static 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
hostapd_get_sta_conn_time(struct sta_info * sta,char * buf,size_t buflen)45 static 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
timeout_next_str(int val)64 static 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
hostapd_ctrl_iface_sta_mib(struct hostapd_data * hapd,struct sta_info * sta,char * buf,size_t buflen)83 static 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
hostapd_ctrl_iface_sta_first(struct hostapd_data * hapd,char * buf,size_t buflen)150 int 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
hostapd_ctrl_iface_sta(struct hostapd_data * hapd,const char * txtaddr,char * buf,size_t buflen)157 int 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
hostapd_ctrl_iface_sta_next(struct hostapd_data * hapd,const char * txtaddr,char * buf,size_t buflen)196 int 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
p2p_manager_disconnect(struct hostapd_data * hapd,u16 stype,u8 minor_reason_code,const u8 * addr)219 static 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
hostapd_ctrl_iface_deauthenticate(struct hostapd_data * hapd,const char * txtaddr)271 int 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
hostapd_ctrl_iface_disassociate(struct hostapd_data * hapd,const char * txtaddr)331 int 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
hostapd_ctrl_iface_status(struct hostapd_data * hapd,char * buf,size_t buflen)391 int 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
hostapd_parse_csa_settings(const char * pos,struct csa_settings * settings)492 int 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