1 /* 2 * Control interface for shared AP commands 3 * Copyright (c) 2004-2013, Jouni Malinen <j (at) 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 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 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 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 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 } 148 149 150 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 } 155 156 157 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 } 194 195 196 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 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 */ 269 270 271 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 } 329 330 331 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 } 389 390 391 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 } 490 491 492 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
