hostapd.c revision 2ac5f6049e74103a8fe8e9c78b330020081d7df4
1/* 2 * hostapd / Initialization and configuration 3 * Copyright (c) 2002-2014, 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 "utils/eloop.h" 13#include "common/ieee802_11_defs.h" 14#include "common/wpa_ctrl.h" 15#include "radius/radius_client.h" 16#include "radius/radius_das.h" 17#include "hostapd.h" 18#include "authsrv.h" 19#include "sta_info.h" 20#include "accounting.h" 21#include "ap_list.h" 22#include "beacon.h" 23#include "iapp.h" 24#include "ieee802_1x.h" 25#include "ieee802_11_auth.h" 26#include "vlan_init.h" 27#include "wpa_auth.h" 28#include "wps_hostapd.h" 29#include "hw_features.h" 30#include "wpa_auth_glue.h" 31#include "ap_drv_ops.h" 32#include "ap_config.h" 33#include "p2p_hostapd.h" 34#include "gas_serv.h" 35#include "dfs.h" 36 37 38static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason); 39static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd); 40static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd); 41static int setup_interface2(struct hostapd_iface *iface); 42static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx); 43 44 45int hostapd_for_each_interface(struct hapd_interfaces *interfaces, 46 int (*cb)(struct hostapd_iface *iface, 47 void *ctx), void *ctx) 48{ 49 size_t i; 50 int ret; 51 52 for (i = 0; i < interfaces->count; i++) { 53 ret = cb(interfaces->iface[i], ctx); 54 if (ret) 55 return ret; 56 } 57 58 return 0; 59} 60 61 62static void hostapd_reload_bss(struct hostapd_data *hapd) 63{ 64 struct hostapd_ssid *ssid; 65 66#ifndef CONFIG_NO_RADIUS 67 radius_client_reconfig(hapd->radius, hapd->conf->radius); 68#endif /* CONFIG_NO_RADIUS */ 69 70 ssid = &hapd->conf->ssid; 71 if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next && 72 ssid->wpa_passphrase_set && ssid->wpa_passphrase) { 73 /* 74 * Force PSK to be derived again since SSID or passphrase may 75 * have changed. 76 */ 77 os_free(ssid->wpa_psk); 78 ssid->wpa_psk = NULL; 79 } 80 if (hostapd_setup_wpa_psk(hapd->conf)) { 81 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK " 82 "after reloading configuration"); 83 } 84 85 if (hapd->conf->ieee802_1x || hapd->conf->wpa) 86 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1); 87 else 88 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0); 89 90 if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) { 91 hostapd_setup_wpa(hapd); 92 if (hapd->wpa_auth) 93 wpa_init_keys(hapd->wpa_auth); 94 } else if (hapd->conf->wpa) { 95 const u8 *wpa_ie; 96 size_t wpa_ie_len; 97 hostapd_reconfig_wpa(hapd); 98 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len); 99 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) 100 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for " 101 "the kernel driver."); 102 } else if (hapd->wpa_auth) { 103 wpa_deinit(hapd->wpa_auth); 104 hapd->wpa_auth = NULL; 105 hostapd_set_privacy(hapd, 0); 106 hostapd_setup_encryption(hapd->conf->iface, hapd); 107 hostapd_set_generic_elem(hapd, (u8 *) "", 0); 108 } 109 110 ieee802_11_set_beacon(hapd); 111 hostapd_update_wps(hapd); 112 113 if (hapd->conf->ssid.ssid_set && 114 hostapd_set_ssid(hapd, hapd->conf->ssid.ssid, 115 hapd->conf->ssid.ssid_len)) { 116 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver"); 117 /* try to continue */ 118 } 119 wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface); 120} 121 122 123static void hostapd_clear_old(struct hostapd_iface *iface) 124{ 125 size_t j; 126 127 /* 128 * Deauthenticate all stations since the new configuration may not 129 * allow them to use the BSS anymore. 130 */ 131 for (j = 0; j < iface->num_bss; j++) { 132 hostapd_flush_old_stations(iface->bss[j], 133 WLAN_REASON_PREV_AUTH_NOT_VALID); 134 hostapd_broadcast_wep_clear(iface->bss[j]); 135 136#ifndef CONFIG_NO_RADIUS 137 /* TODO: update dynamic data based on changed configuration 138 * items (e.g., open/close sockets, etc.) */ 139 radius_client_flush(iface->bss[j]->radius, 0); 140#endif /* CONFIG_NO_RADIUS */ 141 } 142} 143 144 145int hostapd_reload_config(struct hostapd_iface *iface) 146{ 147 struct hostapd_data *hapd = iface->bss[0]; 148 struct hostapd_config *newconf, *oldconf; 149 size_t j; 150 151 if (iface->config_fname == NULL) { 152 /* Only in-memory config in use - assume it has been updated */ 153 hostapd_clear_old(iface); 154 for (j = 0; j < iface->num_bss; j++) 155 hostapd_reload_bss(iface->bss[j]); 156 return 0; 157 } 158 159 if (iface->interfaces == NULL || 160 iface->interfaces->config_read_cb == NULL) 161 return -1; 162 newconf = iface->interfaces->config_read_cb(iface->config_fname); 163 if (newconf == NULL) 164 return -1; 165 166 hostapd_clear_old(iface); 167 168 oldconf = hapd->iconf; 169 iface->conf = newconf; 170 171 for (j = 0; j < iface->num_bss; j++) { 172 hapd = iface->bss[j]; 173 hapd->iconf = newconf; 174 hapd->conf = newconf->bss[j]; 175 hostapd_reload_bss(hapd); 176 } 177 178 hostapd_config_free(oldconf); 179 180 181 return 0; 182} 183 184 185static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd, 186 char *ifname) 187{ 188 int i; 189 190 for (i = 0; i < NUM_WEP_KEYS; i++) { 191 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i, 192 0, NULL, 0, NULL, 0)) { 193 wpa_printf(MSG_DEBUG, "Failed to clear default " 194 "encryption keys (ifname=%s keyidx=%d)", 195 ifname, i); 196 } 197 } 198#ifdef CONFIG_IEEE80211W 199 if (hapd->conf->ieee80211w) { 200 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) { 201 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, 202 NULL, i, 0, NULL, 203 0, NULL, 0)) { 204 wpa_printf(MSG_DEBUG, "Failed to clear " 205 "default mgmt encryption keys " 206 "(ifname=%s keyidx=%d)", ifname, i); 207 } 208 } 209 } 210#endif /* CONFIG_IEEE80211W */ 211} 212 213 214static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd) 215{ 216 hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface); 217 return 0; 218} 219 220 221static int hostapd_broadcast_wep_set(struct hostapd_data *hapd) 222{ 223 int errors = 0, idx; 224 struct hostapd_ssid *ssid = &hapd->conf->ssid; 225 226 idx = ssid->wep.idx; 227 if (ssid->wep.default_len && 228 hostapd_drv_set_key(hapd->conf->iface, 229 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx, 230 1, NULL, 0, ssid->wep.key[idx], 231 ssid->wep.len[idx])) { 232 wpa_printf(MSG_WARNING, "Could not set WEP encryption."); 233 errors++; 234 } 235 236 return errors; 237} 238 239 240static void hostapd_free_hapd_data(struct hostapd_data *hapd) 241{ 242 if (!hapd->started) { 243 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started", 244 __func__, hapd->conf->iface); 245 return; 246 } 247 hapd->started = 0; 248 249 wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface); 250 iapp_deinit(hapd->iapp); 251 hapd->iapp = NULL; 252 accounting_deinit(hapd); 253 hostapd_deinit_wpa(hapd); 254 vlan_deinit(hapd); 255 hostapd_acl_deinit(hapd); 256#ifndef CONFIG_NO_RADIUS 257 radius_client_deinit(hapd->radius); 258 hapd->radius = NULL; 259 radius_das_deinit(hapd->radius_das); 260 hapd->radius_das = NULL; 261#endif /* CONFIG_NO_RADIUS */ 262 263 hostapd_deinit_wps(hapd); 264 265 authsrv_deinit(hapd); 266 267 if (hapd->interface_added && 268 hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) { 269 wpa_printf(MSG_WARNING, "Failed to remove BSS interface %s", 270 hapd->conf->iface); 271 } 272 273 os_free(hapd->probereq_cb); 274 hapd->probereq_cb = NULL; 275 276#ifdef CONFIG_P2P 277 wpabuf_free(hapd->p2p_beacon_ie); 278 hapd->p2p_beacon_ie = NULL; 279 wpabuf_free(hapd->p2p_probe_resp_ie); 280 hapd->p2p_probe_resp_ie = NULL; 281#endif /* CONFIG_P2P */ 282 283 wpabuf_free(hapd->time_adv); 284 285#ifdef CONFIG_INTERWORKING 286 gas_serv_deinit(hapd); 287#endif /* CONFIG_INTERWORKING */ 288 289#ifdef CONFIG_SQLITE 290 os_free(hapd->tmp_eap_user.identity); 291 os_free(hapd->tmp_eap_user.password); 292#endif /* CONFIG_SQLITE */ 293} 294 295 296/** 297 * hostapd_cleanup - Per-BSS cleanup (deinitialization) 298 * @hapd: Pointer to BSS data 299 * 300 * This function is used to free all per-BSS data structures and resources. 301 * Most of the modules that are initialized in hostapd_setup_bss() are 302 * deinitialized here. 303 */ 304static void hostapd_cleanup(struct hostapd_data *hapd) 305{ 306 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd, 307 hapd->conf->iface); 308 if (hapd->iface->interfaces && 309 hapd->iface->interfaces->ctrl_iface_deinit) 310 hapd->iface->interfaces->ctrl_iface_deinit(hapd); 311 hostapd_free_hapd_data(hapd); 312} 313 314 315static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface) 316{ 317 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 318 hostapd_free_hw_features(iface->hw_features, iface->num_hw_features); 319 iface->hw_features = NULL; 320 os_free(iface->current_rates); 321 iface->current_rates = NULL; 322 os_free(iface->basic_rates); 323 iface->basic_rates = NULL; 324 ap_list_deinit(iface); 325} 326 327 328/** 329 * hostapd_cleanup_iface - Complete per-interface cleanup 330 * @iface: Pointer to interface data 331 * 332 * This function is called after per-BSS data structures are deinitialized 333 * with hostapd_cleanup(). 334 */ 335static void hostapd_cleanup_iface(struct hostapd_iface *iface) 336{ 337 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 338 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL); 339 340 hostapd_cleanup_iface_partial(iface); 341 hostapd_config_free(iface->conf); 342 iface->conf = NULL; 343 344 os_free(iface->config_fname); 345 os_free(iface->bss); 346 wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface); 347 os_free(iface); 348} 349 350 351static void hostapd_clear_wep(struct hostapd_data *hapd) 352{ 353 if (hapd->drv_priv && !hapd->iface->driver_ap_teardown) { 354 hostapd_set_privacy(hapd, 0); 355 hostapd_broadcast_wep_clear(hapd); 356 } 357} 358 359 360static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd) 361{ 362 int i; 363 364 hostapd_broadcast_wep_set(hapd); 365 366 if (hapd->conf->ssid.wep.default_len) { 367 hostapd_set_privacy(hapd, 1); 368 return 0; 369 } 370 371 /* 372 * When IEEE 802.1X is not enabled, the driver may need to know how to 373 * set authentication algorithms for static WEP. 374 */ 375 hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs); 376 377 for (i = 0; i < 4; i++) { 378 if (hapd->conf->ssid.wep.key[i] && 379 hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i, 380 i == hapd->conf->ssid.wep.idx, NULL, 0, 381 hapd->conf->ssid.wep.key[i], 382 hapd->conf->ssid.wep.len[i])) { 383 wpa_printf(MSG_WARNING, "Could not set WEP " 384 "encryption."); 385 return -1; 386 } 387 if (hapd->conf->ssid.wep.key[i] && 388 i == hapd->conf->ssid.wep.idx) 389 hostapd_set_privacy(hapd, 1); 390 } 391 392 return 0; 393} 394 395 396static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason) 397{ 398 int ret = 0; 399 u8 addr[ETH_ALEN]; 400 401 if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL) 402 return 0; 403 404 if (!hapd->iface->driver_ap_teardown) { 405 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, 406 "Flushing old station entries"); 407 408 if (hostapd_flush(hapd)) { 409 wpa_msg(hapd->msg_ctx, MSG_WARNING, 410 "Could not connect to kernel driver"); 411 ret = -1; 412 } 413 } 414 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations"); 415 os_memset(addr, 0xff, ETH_ALEN); 416 hostapd_drv_sta_deauth(hapd, addr, reason); 417 hostapd_free_stas(hapd); 418 419 return ret; 420} 421 422 423/** 424 * hostapd_validate_bssid_configuration - Validate BSSID configuration 425 * @iface: Pointer to interface data 426 * Returns: 0 on success, -1 on failure 427 * 428 * This function is used to validate that the configured BSSIDs are valid. 429 */ 430static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface) 431{ 432 u8 mask[ETH_ALEN] = { 0 }; 433 struct hostapd_data *hapd = iface->bss[0]; 434 unsigned int i = iface->conf->num_bss, bits = 0, j; 435 int auto_addr = 0; 436 437 if (hostapd_drv_none(hapd)) 438 return 0; 439 440 /* Generate BSSID mask that is large enough to cover the BSSIDs. */ 441 442 /* Determine the bits necessary to cover the number of BSSIDs. */ 443 for (i--; i; i >>= 1) 444 bits++; 445 446 /* Determine the bits necessary to any configured BSSIDs, 447 if they are higher than the number of BSSIDs. */ 448 for (j = 0; j < iface->conf->num_bss; j++) { 449 if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) { 450 if (j) 451 auto_addr++; 452 continue; 453 } 454 455 for (i = 0; i < ETH_ALEN; i++) { 456 mask[i] |= 457 iface->conf->bss[j]->bssid[i] ^ 458 hapd->own_addr[i]; 459 } 460 } 461 462 if (!auto_addr) 463 goto skip_mask_ext; 464 465 for (i = 0; i < ETH_ALEN && mask[i] == 0; i++) 466 ; 467 j = 0; 468 if (i < ETH_ALEN) { 469 j = (5 - i) * 8; 470 471 while (mask[i] != 0) { 472 mask[i] >>= 1; 473 j++; 474 } 475 } 476 477 if (bits < j) 478 bits = j; 479 480 if (bits > 40) { 481 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)", 482 bits); 483 return -1; 484 } 485 486 os_memset(mask, 0xff, ETH_ALEN); 487 j = bits / 8; 488 for (i = 5; i > 5 - j; i--) 489 mask[i] = 0; 490 j = bits % 8; 491 while (j--) 492 mask[i] <<= 1; 493 494skip_mask_ext: 495 wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)", 496 (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits); 497 498 if (!auto_addr) 499 return 0; 500 501 for (i = 0; i < ETH_ALEN; i++) { 502 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) { 503 wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR 504 " for start address " MACSTR ".", 505 MAC2STR(mask), MAC2STR(hapd->own_addr)); 506 wpa_printf(MSG_ERROR, "Start address must be the " 507 "first address in the block (i.e., addr " 508 "AND mask == addr)."); 509 return -1; 510 } 511 } 512 513 return 0; 514} 515 516 517static int mac_in_conf(struct hostapd_config *conf, const void *a) 518{ 519 size_t i; 520 521 for (i = 0; i < conf->num_bss; i++) { 522 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) { 523 return 1; 524 } 525 } 526 527 return 0; 528} 529 530 531#ifndef CONFIG_NO_RADIUS 532 533static int hostapd_das_nas_mismatch(struct hostapd_data *hapd, 534 struct radius_das_attrs *attr) 535{ 536 if (attr->nas_identifier && 537 (!hapd->conf->nas_identifier || 538 os_strlen(hapd->conf->nas_identifier) != 539 attr->nas_identifier_len || 540 os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier, 541 attr->nas_identifier_len) != 0)) { 542 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch"); 543 return 1; 544 } 545 546 if (attr->nas_ip_addr && 547 (hapd->conf->own_ip_addr.af != AF_INET || 548 os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) != 549 0)) { 550 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch"); 551 return 1; 552 } 553 554#ifdef CONFIG_IPV6 555 if (attr->nas_ipv6_addr && 556 (hapd->conf->own_ip_addr.af != AF_INET6 || 557 os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16) 558 != 0)) { 559 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch"); 560 return 1; 561 } 562#endif /* CONFIG_IPV6 */ 563 564 return 0; 565} 566 567 568static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd, 569 struct radius_das_attrs *attr) 570{ 571 struct sta_info *sta = NULL; 572 char buf[128]; 573 574 if (attr->sta_addr) 575 sta = ap_get_sta(hapd, attr->sta_addr); 576 577 if (sta == NULL && attr->acct_session_id && 578 attr->acct_session_id_len == 17) { 579 for (sta = hapd->sta_list; sta; sta = sta->next) { 580 os_snprintf(buf, sizeof(buf), "%08X-%08X", 581 sta->acct_session_id_hi, 582 sta->acct_session_id_lo); 583 if (os_memcmp(attr->acct_session_id, buf, 17) == 0) 584 break; 585 } 586 } 587 588 if (sta == NULL && attr->cui) { 589 for (sta = hapd->sta_list; sta; sta = sta->next) { 590 struct wpabuf *cui; 591 cui = ieee802_1x_get_radius_cui(sta->eapol_sm); 592 if (cui && wpabuf_len(cui) == attr->cui_len && 593 os_memcmp(wpabuf_head(cui), attr->cui, 594 attr->cui_len) == 0) 595 break; 596 } 597 } 598 599 if (sta == NULL && attr->user_name) { 600 for (sta = hapd->sta_list; sta; sta = sta->next) { 601 u8 *identity; 602 size_t identity_len; 603 identity = ieee802_1x_get_identity(sta->eapol_sm, 604 &identity_len); 605 if (identity && 606 identity_len == attr->user_name_len && 607 os_memcmp(identity, attr->user_name, identity_len) 608 == 0) 609 break; 610 } 611 } 612 613 return sta; 614} 615 616 617static enum radius_das_res 618hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr) 619{ 620 struct hostapd_data *hapd = ctx; 621 struct sta_info *sta; 622 623 if (hostapd_das_nas_mismatch(hapd, attr)) 624 return RADIUS_DAS_NAS_MISMATCH; 625 626 sta = hostapd_das_find_sta(hapd, attr); 627 if (sta == NULL) 628 return RADIUS_DAS_SESSION_NOT_FOUND; 629 630 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr); 631 632 hostapd_drv_sta_deauth(hapd, sta->addr, 633 WLAN_REASON_PREV_AUTH_NOT_VALID); 634 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID); 635 636 return RADIUS_DAS_SUCCESS; 637} 638 639#endif /* CONFIG_NO_RADIUS */ 640 641 642/** 643 * hostapd_setup_bss - Per-BSS setup (initialization) 644 * @hapd: Pointer to BSS data 645 * @first: Whether this BSS is the first BSS of an interface; -1 = not first, 646 * but interface may exist 647 * 648 * This function is used to initialize all per-BSS data structures and 649 * resources. This gets called in a loop for each BSS when an interface is 650 * initialized. Most of the modules that are initialized here will be 651 * deinitialized in hostapd_cleanup(). 652 */ 653static int hostapd_setup_bss(struct hostapd_data *hapd, int first) 654{ 655 struct hostapd_bss_config *conf = hapd->conf; 656 u8 ssid[HOSTAPD_MAX_SSID_LEN + 1]; 657 int ssid_len, set_ssid; 658 char force_ifname[IFNAMSIZ]; 659 u8 if_addr[ETH_ALEN]; 660 661 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)", 662 __func__, hapd, hapd->conf->iface, first); 663 664 if (hapd->started) { 665 wpa_printf(MSG_ERROR, "%s: Interface %s was already started", 666 __func__, hapd->conf->iface); 667 return -1; 668 } 669 hapd->started = 1; 670 671 if (!first || first == -1) { 672 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) { 673 /* Allocate the next available BSSID. */ 674 do { 675 inc_byte_array(hapd->own_addr, ETH_ALEN); 676 } while (mac_in_conf(hapd->iconf, hapd->own_addr)); 677 } else { 678 /* Allocate the configured BSSID. */ 679 os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN); 680 681 if (hostapd_mac_comp(hapd->own_addr, 682 hapd->iface->bss[0]->own_addr) == 683 0) { 684 wpa_printf(MSG_ERROR, "BSS '%s' may not have " 685 "BSSID set to the MAC address of " 686 "the radio", hapd->conf->iface); 687 return -1; 688 } 689 } 690 691 hapd->interface_added = 1; 692 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS, 693 hapd->conf->iface, hapd->own_addr, hapd, 694 &hapd->drv_priv, force_ifname, if_addr, 695 hapd->conf->bridge[0] ? hapd->conf->bridge : 696 NULL, first == -1)) { 697 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID=" 698 MACSTR ")", MAC2STR(hapd->own_addr)); 699 hapd->interface_added = 0; 700 return -1; 701 } 702 } 703 704 if (conf->wmm_enabled < 0) 705 conf->wmm_enabled = hapd->iconf->ieee80211n; 706 707 hostapd_flush_old_stations(hapd, WLAN_REASON_PREV_AUTH_NOT_VALID); 708 hostapd_set_privacy(hapd, 0); 709 710 hostapd_broadcast_wep_clear(hapd); 711 if (hostapd_setup_encryption(hapd->conf->iface, hapd)) 712 return -1; 713 714 /* 715 * Fetch the SSID from the system and use it or, 716 * if one was specified in the config file, verify they 717 * match. 718 */ 719 ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid)); 720 if (ssid_len < 0) { 721 wpa_printf(MSG_ERROR, "Could not read SSID from system"); 722 return -1; 723 } 724 if (conf->ssid.ssid_set) { 725 /* 726 * If SSID is specified in the config file and it differs 727 * from what is being used then force installation of the 728 * new SSID. 729 */ 730 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len || 731 os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0); 732 } else { 733 /* 734 * No SSID in the config file; just use the one we got 735 * from the system. 736 */ 737 set_ssid = 0; 738 conf->ssid.ssid_len = ssid_len; 739 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len); 740 } 741 742 if (!hostapd_drv_none(hapd)) { 743 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR 744 " and ssid \"%s\"", 745 hapd->conf->iface, MAC2STR(hapd->own_addr), 746 wpa_ssid_txt(hapd->conf->ssid.ssid, 747 hapd->conf->ssid.ssid_len)); 748 } 749 750 if (hostapd_setup_wpa_psk(conf)) { 751 wpa_printf(MSG_ERROR, "WPA-PSK setup failed."); 752 return -1; 753 } 754 755 /* Set SSID for the kernel driver (to be used in beacon and probe 756 * response frames) */ 757 if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid, 758 conf->ssid.ssid_len)) { 759 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver"); 760 return -1; 761 } 762 763 if (wpa_debug_level == MSG_MSGDUMP) 764 conf->radius->msg_dumps = 1; 765#ifndef CONFIG_NO_RADIUS 766 hapd->radius = radius_client_init(hapd, conf->radius); 767 if (hapd->radius == NULL) { 768 wpa_printf(MSG_ERROR, "RADIUS client initialization failed."); 769 return -1; 770 } 771 772 if (hapd->conf->radius_das_port) { 773 struct radius_das_conf das_conf; 774 os_memset(&das_conf, 0, sizeof(das_conf)); 775 das_conf.port = hapd->conf->radius_das_port; 776 das_conf.shared_secret = hapd->conf->radius_das_shared_secret; 777 das_conf.shared_secret_len = 778 hapd->conf->radius_das_shared_secret_len; 779 das_conf.client_addr = &hapd->conf->radius_das_client_addr; 780 das_conf.time_window = hapd->conf->radius_das_time_window; 781 das_conf.require_event_timestamp = 782 hapd->conf->radius_das_require_event_timestamp; 783 das_conf.ctx = hapd; 784 das_conf.disconnect = hostapd_das_disconnect; 785 hapd->radius_das = radius_das_init(&das_conf); 786 if (hapd->radius_das == NULL) { 787 wpa_printf(MSG_ERROR, "RADIUS DAS initialization " 788 "failed."); 789 return -1; 790 } 791 } 792#endif /* CONFIG_NO_RADIUS */ 793 794 if (hostapd_acl_init(hapd)) { 795 wpa_printf(MSG_ERROR, "ACL initialization failed."); 796 return -1; 797 } 798 if (hostapd_init_wps(hapd, conf)) 799 return -1; 800 801 if (authsrv_init(hapd) < 0) 802 return -1; 803 804 if (ieee802_1x_init(hapd)) { 805 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed."); 806 return -1; 807 } 808 809 if ((hapd->conf->wpa || hapd->conf->osen) && hostapd_setup_wpa(hapd)) 810 return -1; 811 812 if (accounting_init(hapd)) { 813 wpa_printf(MSG_ERROR, "Accounting initialization failed."); 814 return -1; 815 } 816 817 if (hapd->conf->ieee802_11f && 818 (hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) { 819 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization " 820 "failed."); 821 return -1; 822 } 823 824#ifdef CONFIG_INTERWORKING 825 if (gas_serv_init(hapd)) { 826 wpa_printf(MSG_ERROR, "GAS server initialization failed"); 827 return -1; 828 } 829 830 if (conf->qos_map_set_len && 831 hostapd_drv_set_qos_map(hapd, conf->qos_map_set, 832 conf->qos_map_set_len)) { 833 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map"); 834 return -1; 835 } 836#endif /* CONFIG_INTERWORKING */ 837 838 if (!hostapd_drv_none(hapd) && vlan_init(hapd)) { 839 wpa_printf(MSG_ERROR, "VLAN initialization failed."); 840 return -1; 841 } 842 843 if (!hapd->conf->start_disabled && ieee802_11_set_beacon(hapd) < 0) 844 return -1; 845 846 if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0) 847 return -1; 848 849 if (hapd->driver && hapd->driver->set_operstate) 850 hapd->driver->set_operstate(hapd->drv_priv, 1); 851 852 return 0; 853} 854 855 856static void hostapd_tx_queue_params(struct hostapd_iface *iface) 857{ 858 struct hostapd_data *hapd = iface->bss[0]; 859 int i; 860 struct hostapd_tx_queue_params *p; 861 862 for (i = 0; i < NUM_TX_QUEUES; i++) { 863 p = &iface->conf->tx_queue[i]; 864 865 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin, 866 p->cwmax, p->burst)) { 867 wpa_printf(MSG_DEBUG, "Failed to set TX queue " 868 "parameters for queue %d.", i); 869 /* Continue anyway */ 870 } 871 } 872} 873 874 875static int hostapd_set_acl_list(struct hostapd_data *hapd, 876 struct mac_acl_entry *mac_acl, 877 int n_entries, u8 accept_acl) 878{ 879 struct hostapd_acl_params *acl_params; 880 int i, err; 881 882 acl_params = os_zalloc(sizeof(*acl_params) + 883 (n_entries * sizeof(acl_params->mac_acl[0]))); 884 if (!acl_params) 885 return -ENOMEM; 886 887 for (i = 0; i < n_entries; i++) 888 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr, 889 ETH_ALEN); 890 891 acl_params->acl_policy = accept_acl; 892 acl_params->num_mac_acl = n_entries; 893 894 err = hostapd_drv_set_acl(hapd, acl_params); 895 896 os_free(acl_params); 897 898 return err; 899} 900 901 902static void hostapd_set_acl(struct hostapd_data *hapd) 903{ 904 struct hostapd_config *conf = hapd->iconf; 905 int err; 906 u8 accept_acl; 907 908 if (hapd->iface->drv_max_acl_mac_addrs == 0) 909 return; 910 if (!(conf->bss[0]->num_accept_mac || conf->bss[0]->num_deny_mac)) 911 return; 912 913 if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) { 914 if (conf->bss[0]->num_accept_mac) { 915 accept_acl = 1; 916 err = hostapd_set_acl_list(hapd, 917 conf->bss[0]->accept_mac, 918 conf->bss[0]->num_accept_mac, 919 accept_acl); 920 if (err) { 921 wpa_printf(MSG_DEBUG, "Failed to set accept acl"); 922 return; 923 } 924 } else { 925 wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file"); 926 } 927 } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) { 928 if (conf->bss[0]->num_deny_mac) { 929 accept_acl = 0; 930 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac, 931 conf->bss[0]->num_deny_mac, 932 accept_acl); 933 if (err) { 934 wpa_printf(MSG_DEBUG, "Failed to set deny acl"); 935 return; 936 } 937 } else { 938 wpa_printf(MSG_DEBUG, "Mismatch between ACL Policy & Accept/deny lists file"); 939 } 940 } 941} 942 943 944static int start_ctrl_iface_bss(struct hostapd_data *hapd) 945{ 946 if (!hapd->iface->interfaces || 947 !hapd->iface->interfaces->ctrl_iface_init) 948 return 0; 949 950 if (hapd->iface->interfaces->ctrl_iface_init(hapd)) { 951 wpa_printf(MSG_ERROR, 952 "Failed to setup control interface for %s", 953 hapd->conf->iface); 954 return -1; 955 } 956 957 return 0; 958} 959 960 961static int start_ctrl_iface(struct hostapd_iface *iface) 962{ 963 size_t i; 964 965 if (!iface->interfaces || !iface->interfaces->ctrl_iface_init) 966 return 0; 967 968 for (i = 0; i < iface->num_bss; i++) { 969 struct hostapd_data *hapd = iface->bss[i]; 970 if (iface->interfaces->ctrl_iface_init(hapd)) { 971 wpa_printf(MSG_ERROR, 972 "Failed to setup control interface for %s", 973 hapd->conf->iface); 974 return -1; 975 } 976 } 977 978 return 0; 979} 980 981 982static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx) 983{ 984 struct hostapd_iface *iface = eloop_ctx; 985 986 if (!iface->wait_channel_update) { 987 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it"); 988 return; 989 } 990 991 /* 992 * It is possible that the existing channel list is acceptable, so try 993 * to proceed. 994 */ 995 wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway"); 996 setup_interface2(iface); 997} 998 999 1000void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator) 1001{ 1002 if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER) 1003 return; 1004 1005 wpa_printf(MSG_DEBUG, "Channel list updated - continue setup"); 1006 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL); 1007 setup_interface2(iface); 1008} 1009 1010 1011static int setup_interface(struct hostapd_iface *iface) 1012{ 1013 struct hostapd_data *hapd = iface->bss[0]; 1014 size_t i; 1015 1016 /* 1017 * It is possible that setup_interface() is called after the interface 1018 * was disabled etc., in which case driver_ap_teardown is possibly set 1019 * to 1. Clear it here so any other key/station deletion, which is not 1020 * part of a teardown flow, would also call the relevant driver 1021 * callbacks. 1022 */ 1023 iface->driver_ap_teardown = 0; 1024 1025 if (!iface->phy[0]) { 1026 const char *phy = hostapd_drv_get_radio_name(hapd); 1027 if (phy) { 1028 wpa_printf(MSG_DEBUG, "phy: %s", phy); 1029 os_strlcpy(iface->phy, phy, sizeof(iface->phy)); 1030 } 1031 } 1032 1033 /* 1034 * Make sure that all BSSes get configured with a pointer to the same 1035 * driver interface. 1036 */ 1037 for (i = 1; i < iface->num_bss; i++) { 1038 iface->bss[i]->driver = hapd->driver; 1039 iface->bss[i]->drv_priv = hapd->drv_priv; 1040 } 1041 1042 if (hostapd_validate_bssid_configuration(iface)) 1043 return -1; 1044 1045 /* 1046 * Initialize control interfaces early to allow external monitoring of 1047 * channel setup operations that may take considerable amount of time 1048 * especially for DFS cases. 1049 */ 1050 if (start_ctrl_iface(iface)) 1051 return -1; 1052 1053 if (hapd->iconf->country[0] && hapd->iconf->country[1]) { 1054 char country[4], previous_country[4]; 1055 1056 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE); 1057 if (hostapd_get_country(hapd, previous_country) < 0) 1058 previous_country[0] = '\0'; 1059 1060 os_memcpy(country, hapd->iconf->country, 3); 1061 country[3] = '\0'; 1062 if (hostapd_set_country(hapd, country) < 0) { 1063 wpa_printf(MSG_ERROR, "Failed to set country code"); 1064 return -1; 1065 } 1066 1067 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s", 1068 previous_country, country); 1069 1070 if (os_strncmp(previous_country, country, 2) != 0) { 1071 wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update"); 1072 iface->wait_channel_update = 1; 1073 eloop_register_timeout(5, 0, 1074 channel_list_update_timeout, 1075 iface, NULL); 1076 return 0; 1077 } 1078 } 1079 1080 return setup_interface2(iface); 1081} 1082 1083 1084static int setup_interface2(struct hostapd_iface *iface) 1085{ 1086 iface->wait_channel_update = 0; 1087 1088 if (hostapd_get_hw_features(iface)) { 1089 /* Not all drivers support this yet, so continue without hw 1090 * feature data. */ 1091 } else { 1092 int ret = hostapd_select_hw_mode(iface); 1093 if (ret < 0) { 1094 wpa_printf(MSG_ERROR, "Could not select hw_mode and " 1095 "channel. (%d)", ret); 1096 return -1; 1097 } 1098 if (ret == 1) { 1099 wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)"); 1100 return 0; 1101 } 1102 ret = hostapd_check_ht_capab(iface); 1103 if (ret < 0) 1104 return -1; 1105 if (ret == 1) { 1106 wpa_printf(MSG_DEBUG, "Interface initialization will " 1107 "be completed in a callback"); 1108 return 0; 1109 } 1110 1111 if (iface->conf->ieee80211h) 1112 wpa_printf(MSG_DEBUG, "DFS support is enabled"); 1113 } 1114 return hostapd_setup_interface_complete(iface, 0); 1115} 1116 1117 1118/** 1119 * hostapd_setup_interface_complete - Complete interface setup 1120 * 1121 * This function is called when previous steps in the interface setup has been 1122 * completed. This can also start operations, e.g., DFS, that will require 1123 * additional processing before interface is ready to be enabled. Such 1124 * operations will call this function from eloop callbacks when finished. 1125 */ 1126int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err) 1127{ 1128 struct hostapd_data *hapd = iface->bss[0]; 1129 size_t j; 1130 u8 *prev_addr; 1131 1132 if (err) { 1133 wpa_printf(MSG_ERROR, "Interface initialization failed"); 1134 hostapd_set_state(iface, HAPD_IFACE_DISABLED); 1135 if (iface->interfaces && iface->interfaces->terminate_on_error) 1136 eloop_terminate(); 1137 return -1; 1138 } 1139 1140 wpa_printf(MSG_DEBUG, "Completing interface initialization"); 1141 if (iface->conf->channel) { 1142#ifdef NEED_AP_MLME 1143 int res; 1144#endif /* NEED_AP_MLME */ 1145 1146 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel); 1147 wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d " 1148 "Frequency: %d MHz", 1149 hostapd_hw_mode_txt(iface->conf->hw_mode), 1150 iface->conf->channel, iface->freq); 1151 1152#ifdef NEED_AP_MLME 1153 /* Check DFS */ 1154 res = hostapd_handle_dfs(iface); 1155 if (res <= 0) 1156 return res; 1157#endif /* NEED_AP_MLME */ 1158 1159 if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq, 1160 hapd->iconf->channel, 1161 hapd->iconf->ieee80211n, 1162 hapd->iconf->ieee80211ac, 1163 hapd->iconf->secondary_channel, 1164 hapd->iconf->vht_oper_chwidth, 1165 hapd->iconf->vht_oper_centr_freq_seg0_idx, 1166 hapd->iconf->vht_oper_centr_freq_seg1_idx)) { 1167 wpa_printf(MSG_ERROR, "Could not set channel for " 1168 "kernel driver"); 1169 return -1; 1170 } 1171 } 1172 1173 if (iface->current_mode) { 1174 if (hostapd_prepare_rates(iface, iface->current_mode)) { 1175 wpa_printf(MSG_ERROR, "Failed to prepare rates " 1176 "table."); 1177 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211, 1178 HOSTAPD_LEVEL_WARNING, 1179 "Failed to prepare rates table."); 1180 return -1; 1181 } 1182 } 1183 1184 if (hapd->iconf->rts_threshold > -1 && 1185 hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) { 1186 wpa_printf(MSG_ERROR, "Could not set RTS threshold for " 1187 "kernel driver"); 1188 return -1; 1189 } 1190 1191 if (hapd->iconf->fragm_threshold > -1 && 1192 hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) { 1193 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold " 1194 "for kernel driver"); 1195 return -1; 1196 } 1197 1198 prev_addr = hapd->own_addr; 1199 1200 for (j = 0; j < iface->num_bss; j++) { 1201 hapd = iface->bss[j]; 1202 if (j) 1203 os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN); 1204 if (hostapd_setup_bss(hapd, j == 0)) 1205 return -1; 1206 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) 1207 prev_addr = hapd->own_addr; 1208 } 1209 hapd = iface->bss[0]; 1210 1211 hostapd_tx_queue_params(iface); 1212 1213 ap_list_init(iface); 1214 1215 hostapd_set_acl(hapd); 1216 1217 if (hostapd_driver_commit(hapd) < 0) { 1218 wpa_printf(MSG_ERROR, "%s: Failed to commit driver " 1219 "configuration", __func__); 1220 return -1; 1221 } 1222 1223 /* 1224 * WPS UPnP module can be initialized only when the "upnp_iface" is up. 1225 * If "interface" and "upnp_iface" are the same (e.g., non-bridge 1226 * mode), the interface is up only after driver_commit, so initialize 1227 * WPS after driver_commit. 1228 */ 1229 for (j = 0; j < iface->num_bss; j++) { 1230 if (hostapd_init_wps_complete(iface->bss[j])) 1231 return -1; 1232 } 1233 1234 hostapd_set_state(iface, HAPD_IFACE_ENABLED); 1235 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED); 1236 if (hapd->setup_complete_cb) 1237 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx); 1238 1239 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.", 1240 iface->bss[0]->conf->iface); 1241 if (iface->interfaces && iface->interfaces->terminate_on_error > 0) 1242 iface->interfaces->terminate_on_error--; 1243 1244 return 0; 1245} 1246 1247 1248/** 1249 * hostapd_setup_interface - Setup of an interface 1250 * @iface: Pointer to interface data. 1251 * Returns: 0 on success, -1 on failure 1252 * 1253 * Initializes the driver interface, validates the configuration, 1254 * and sets driver parameters based on the configuration. 1255 * Flushes old stations, sets the channel, encryption, 1256 * beacons, and WDS links based on the configuration. 1257 * 1258 * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS, 1259 * or DFS operations, this function returns 0 before such operations have been 1260 * completed. The pending operations are registered into eloop and will be 1261 * completed from eloop callbacks. Those callbacks end up calling 1262 * hostapd_setup_interface_complete() once setup has been completed. 1263 */ 1264int hostapd_setup_interface(struct hostapd_iface *iface) 1265{ 1266 int ret; 1267 1268 ret = setup_interface(iface); 1269 if (ret) { 1270 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.", 1271 iface->bss[0]->conf->iface); 1272 return -1; 1273 } 1274 1275 return 0; 1276} 1277 1278 1279/** 1280 * hostapd_alloc_bss_data - Allocate and initialize per-BSS data 1281 * @hapd_iface: Pointer to interface data 1282 * @conf: Pointer to per-interface configuration 1283 * @bss: Pointer to per-BSS configuration for this BSS 1284 * Returns: Pointer to allocated BSS data 1285 * 1286 * This function is used to allocate per-BSS data structure. This data will be 1287 * freed after hostapd_cleanup() is called for it during interface 1288 * deinitialization. 1289 */ 1290struct hostapd_data * 1291hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface, 1292 struct hostapd_config *conf, 1293 struct hostapd_bss_config *bss) 1294{ 1295 struct hostapd_data *hapd; 1296 1297 hapd = os_zalloc(sizeof(*hapd)); 1298 if (hapd == NULL) 1299 return NULL; 1300 1301 hapd->new_assoc_sta_cb = hostapd_new_assoc_sta; 1302 hapd->iconf = conf; 1303 hapd->conf = bss; 1304 hapd->iface = hapd_iface; 1305 hapd->driver = hapd->iconf->driver; 1306 hapd->ctrl_sock = -1; 1307 1308 return hapd; 1309} 1310 1311 1312static void hostapd_bss_deinit(struct hostapd_data *hapd) 1313{ 1314 wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__, 1315 hapd->conf->iface); 1316 hostapd_free_stas(hapd); 1317 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING); 1318 hostapd_clear_wep(hapd); 1319 hostapd_cleanup(hapd); 1320} 1321 1322 1323void hostapd_interface_deinit(struct hostapd_iface *iface) 1324{ 1325 int j; 1326 1327 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 1328 if (iface == NULL) 1329 return; 1330 1331 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL); 1332 iface->wait_channel_update = 0; 1333 1334 for (j = iface->num_bss - 1; j >= 0; j--) 1335 hostapd_bss_deinit(iface->bss[j]); 1336} 1337 1338 1339void hostapd_interface_free(struct hostapd_iface *iface) 1340{ 1341 size_t j; 1342 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 1343 for (j = 0; j < iface->num_bss; j++) { 1344 wpa_printf(MSG_DEBUG, "%s: free hapd %p", 1345 __func__, iface->bss[j]); 1346 os_free(iface->bss[j]); 1347 } 1348 hostapd_cleanup_iface(iface); 1349} 1350 1351 1352/** 1353 * hostapd_init - Allocate and initialize per-interface data 1354 * @config_file: Path to the configuration file 1355 * Returns: Pointer to the allocated interface data or %NULL on failure 1356 * 1357 * This function is used to allocate main data structures for per-interface 1358 * data. The allocated data buffer will be freed by calling 1359 * hostapd_cleanup_iface(). 1360 */ 1361struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces, 1362 const char *config_file) 1363{ 1364 struct hostapd_iface *hapd_iface = NULL; 1365 struct hostapd_config *conf = NULL; 1366 struct hostapd_data *hapd; 1367 size_t i; 1368 1369 hapd_iface = os_zalloc(sizeof(*hapd_iface)); 1370 if (hapd_iface == NULL) 1371 goto fail; 1372 1373 hapd_iface->config_fname = os_strdup(config_file); 1374 if (hapd_iface->config_fname == NULL) 1375 goto fail; 1376 1377 conf = interfaces->config_read_cb(hapd_iface->config_fname); 1378 if (conf == NULL) 1379 goto fail; 1380 hapd_iface->conf = conf; 1381 1382 hapd_iface->num_bss = conf->num_bss; 1383 hapd_iface->bss = os_calloc(conf->num_bss, 1384 sizeof(struct hostapd_data *)); 1385 if (hapd_iface->bss == NULL) 1386 goto fail; 1387 1388 for (i = 0; i < conf->num_bss; i++) { 1389 hapd = hapd_iface->bss[i] = 1390 hostapd_alloc_bss_data(hapd_iface, conf, 1391 conf->bss[i]); 1392 if (hapd == NULL) 1393 goto fail; 1394 hapd->msg_ctx = hapd; 1395 } 1396 1397 return hapd_iface; 1398 1399fail: 1400 wpa_printf(MSG_ERROR, "Failed to set up interface with %s", 1401 config_file); 1402 if (conf) 1403 hostapd_config_free(conf); 1404 if (hapd_iface) { 1405 os_free(hapd_iface->config_fname); 1406 os_free(hapd_iface->bss); 1407 wpa_printf(MSG_DEBUG, "%s: free iface %p", 1408 __func__, hapd_iface); 1409 os_free(hapd_iface); 1410 } 1411 return NULL; 1412} 1413 1414 1415static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname) 1416{ 1417 size_t i, j; 1418 1419 for (i = 0; i < interfaces->count; i++) { 1420 struct hostapd_iface *iface = interfaces->iface[i]; 1421 for (j = 0; j < iface->num_bss; j++) { 1422 struct hostapd_data *hapd = iface->bss[j]; 1423 if (os_strcmp(ifname, hapd->conf->iface) == 0) 1424 return 1; 1425 } 1426 } 1427 1428 return 0; 1429} 1430 1431 1432/** 1433 * hostapd_interface_init_bss - Read configuration file and init BSS data 1434 * 1435 * This function is used to parse configuration file for a BSS. This BSS is 1436 * added to an existing interface sharing the same radio (if any) or a new 1437 * interface is created if this is the first interface on a radio. This 1438 * allocate memory for the BSS. No actual driver operations are started. 1439 * 1440 * This is similar to hostapd_interface_init(), but for a case where the 1441 * configuration is used to add a single BSS instead of all BSSes for a radio. 1442 */ 1443struct hostapd_iface * 1444hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy, 1445 const char *config_fname, int debug) 1446{ 1447 struct hostapd_iface *new_iface = NULL, *iface = NULL; 1448 struct hostapd_data *hapd; 1449 int k; 1450 size_t i, bss_idx; 1451 1452 if (!phy || !*phy) 1453 return NULL; 1454 1455 for (i = 0; i < interfaces->count; i++) { 1456 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) { 1457 iface = interfaces->iface[i]; 1458 break; 1459 } 1460 } 1461 1462 wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s", 1463 config_fname, phy, iface ? "" : " --> new PHY"); 1464 if (iface) { 1465 struct hostapd_config *conf; 1466 struct hostapd_bss_config **tmp_conf; 1467 struct hostapd_data **tmp_bss; 1468 struct hostapd_bss_config *bss; 1469 const char *ifname; 1470 1471 /* Add new BSS to existing iface */ 1472 conf = interfaces->config_read_cb(config_fname); 1473 if (conf == NULL) 1474 return NULL; 1475 if (conf->num_bss > 1) { 1476 wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config"); 1477 hostapd_config_free(conf); 1478 return NULL; 1479 } 1480 1481 ifname = conf->bss[0]->iface; 1482 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) { 1483 wpa_printf(MSG_ERROR, 1484 "Interface name %s already in use", ifname); 1485 hostapd_config_free(conf); 1486 return NULL; 1487 } 1488 1489 tmp_conf = os_realloc_array( 1490 iface->conf->bss, iface->conf->num_bss + 1, 1491 sizeof(struct hostapd_bss_config *)); 1492 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1, 1493 sizeof(struct hostapd_data *)); 1494 if (tmp_bss) 1495 iface->bss = tmp_bss; 1496 if (tmp_conf) { 1497 iface->conf->bss = tmp_conf; 1498 iface->conf->last_bss = tmp_conf[0]; 1499 } 1500 if (tmp_bss == NULL || tmp_conf == NULL) { 1501 hostapd_config_free(conf); 1502 return NULL; 1503 } 1504 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0]; 1505 iface->conf->num_bss++; 1506 1507 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss); 1508 if (hapd == NULL) { 1509 iface->conf->num_bss--; 1510 hostapd_config_free(conf); 1511 return NULL; 1512 } 1513 iface->conf->last_bss = bss; 1514 iface->bss[iface->num_bss] = hapd; 1515 hapd->msg_ctx = hapd; 1516 1517 bss_idx = iface->num_bss++; 1518 conf->num_bss--; 1519 conf->bss[0] = NULL; 1520 hostapd_config_free(conf); 1521 } else { 1522 /* Add a new iface with the first BSS */ 1523 new_iface = iface = hostapd_init(interfaces, config_fname); 1524 if (!iface) 1525 return NULL; 1526 os_strlcpy(iface->phy, phy, sizeof(iface->phy)); 1527 iface->interfaces = interfaces; 1528 bss_idx = 0; 1529 } 1530 1531 for (k = 0; k < debug; k++) { 1532 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0) 1533 iface->bss[bss_idx]->conf->logger_stdout_level--; 1534 } 1535 1536 if (iface->conf->bss[bss_idx]->iface[0] == '\0' && 1537 !hostapd_drv_none(iface->bss[bss_idx])) { 1538 wpa_printf(MSG_ERROR, "Interface name not specified in %s", 1539 config_fname); 1540 if (new_iface) 1541 hostapd_interface_deinit_free(new_iface); 1542 return NULL; 1543 } 1544 1545 return iface; 1546} 1547 1548 1549void hostapd_interface_deinit_free(struct hostapd_iface *iface) 1550{ 1551 const struct wpa_driver_ops *driver; 1552 void *drv_priv; 1553 1554 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 1555 if (iface == NULL) 1556 return; 1557 wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u", 1558 __func__, (unsigned int) iface->num_bss, 1559 (unsigned int) iface->conf->num_bss); 1560 driver = iface->bss[0]->driver; 1561 drv_priv = iface->bss[0]->drv_priv; 1562 hostapd_interface_deinit(iface); 1563 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit", 1564 __func__, driver, drv_priv); 1565 if (driver && driver->hapd_deinit && drv_priv) 1566 driver->hapd_deinit(drv_priv); 1567 hostapd_interface_free(iface); 1568} 1569 1570 1571int hostapd_enable_iface(struct hostapd_iface *hapd_iface) 1572{ 1573 if (hapd_iface->bss[0]->drv_priv != NULL) { 1574 wpa_printf(MSG_ERROR, "Interface %s already enabled", 1575 hapd_iface->conf->bss[0]->iface); 1576 return -1; 1577 } 1578 1579 wpa_printf(MSG_DEBUG, "Enable interface %s", 1580 hapd_iface->conf->bss[0]->iface); 1581 1582 if (hostapd_config_check(hapd_iface->conf, 1) < 0) { 1583 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable"); 1584 return -1; 1585 } 1586 1587 if (hapd_iface->interfaces == NULL || 1588 hapd_iface->interfaces->driver_init == NULL || 1589 hapd_iface->interfaces->driver_init(hapd_iface)) 1590 return -1; 1591 1592 if (hostapd_setup_interface(hapd_iface)) { 1593 const struct wpa_driver_ops *driver; 1594 void *drv_priv; 1595 1596 driver = hapd_iface->bss[0]->driver; 1597 drv_priv = hapd_iface->bss[0]->drv_priv; 1598 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit", 1599 __func__, driver, drv_priv); 1600 if (driver && driver->hapd_deinit && drv_priv) { 1601 driver->hapd_deinit(drv_priv); 1602 hapd_iface->bss[0]->drv_priv = NULL; 1603 } 1604 return -1; 1605 } 1606 1607 return 0; 1608} 1609 1610 1611int hostapd_reload_iface(struct hostapd_iface *hapd_iface) 1612{ 1613 size_t j; 1614 1615 wpa_printf(MSG_DEBUG, "Reload interface %s", 1616 hapd_iface->conf->bss[0]->iface); 1617 for (j = 0; j < hapd_iface->num_bss; j++) 1618 hostapd_set_security_params(hapd_iface->conf->bss[j]); 1619 if (hostapd_config_check(hapd_iface->conf, 1) < 0) { 1620 wpa_printf(MSG_ERROR, "Updated configuration is invalid"); 1621 return -1; 1622 } 1623 hostapd_clear_old(hapd_iface); 1624 for (j = 0; j < hapd_iface->num_bss; j++) 1625 hostapd_reload_bss(hapd_iface->bss[j]); 1626 1627 return 0; 1628} 1629 1630 1631int hostapd_disable_iface(struct hostapd_iface *hapd_iface) 1632{ 1633 size_t j; 1634 const struct wpa_driver_ops *driver; 1635 void *drv_priv; 1636 1637 if (hapd_iface == NULL) 1638 return -1; 1639 wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED); 1640 driver = hapd_iface->bss[0]->driver; 1641 drv_priv = hapd_iface->bss[0]->drv_priv; 1642 1643 hapd_iface->driver_ap_teardown = 1644 !!(hapd_iface->drv_flags & 1645 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT); 1646 1647 /* same as hostapd_interface_deinit without deinitializing ctrl-iface */ 1648 for (j = 0; j < hapd_iface->num_bss; j++) { 1649 struct hostapd_data *hapd = hapd_iface->bss[j]; 1650 hostapd_free_stas(hapd); 1651 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING); 1652 hostapd_clear_wep(hapd); 1653 hostapd_free_hapd_data(hapd); 1654 } 1655 1656 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit", 1657 __func__, driver, drv_priv); 1658 if (driver && driver->hapd_deinit && drv_priv) { 1659 driver->hapd_deinit(drv_priv); 1660 hapd_iface->bss[0]->drv_priv = NULL; 1661 } 1662 1663 /* From hostapd_cleanup_iface: These were initialized in 1664 * hostapd_setup_interface and hostapd_setup_interface_complete 1665 */ 1666 hostapd_cleanup_iface_partial(hapd_iface); 1667 1668 wpa_printf(MSG_DEBUG, "Interface %s disabled", 1669 hapd_iface->bss[0]->conf->iface); 1670 hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED); 1671 return 0; 1672} 1673 1674 1675static struct hostapd_iface * 1676hostapd_iface_alloc(struct hapd_interfaces *interfaces) 1677{ 1678 struct hostapd_iface **iface, *hapd_iface; 1679 1680 iface = os_realloc_array(interfaces->iface, interfaces->count + 1, 1681 sizeof(struct hostapd_iface *)); 1682 if (iface == NULL) 1683 return NULL; 1684 interfaces->iface = iface; 1685 hapd_iface = interfaces->iface[interfaces->count] = 1686 os_zalloc(sizeof(*hapd_iface)); 1687 if (hapd_iface == NULL) { 1688 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for " 1689 "the interface", __func__); 1690 return NULL; 1691 } 1692 interfaces->count++; 1693 hapd_iface->interfaces = interfaces; 1694 1695 return hapd_iface; 1696} 1697 1698 1699static struct hostapd_config * 1700hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname, 1701 const char *ctrl_iface) 1702{ 1703 struct hostapd_bss_config *bss; 1704 struct hostapd_config *conf; 1705 1706 /* Allocates memory for bss and conf */ 1707 conf = hostapd_config_defaults(); 1708 if (conf == NULL) { 1709 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for " 1710 "configuration", __func__); 1711 return NULL; 1712 } 1713 1714 conf->driver = wpa_drivers[0]; 1715 if (conf->driver == NULL) { 1716 wpa_printf(MSG_ERROR, "No driver wrappers registered!"); 1717 hostapd_config_free(conf); 1718 return NULL; 1719 } 1720 1721 bss = conf->last_bss = conf->bss[0]; 1722 1723 os_strlcpy(bss->iface, ifname, sizeof(bss->iface)); 1724 bss->ctrl_interface = os_strdup(ctrl_iface); 1725 if (bss->ctrl_interface == NULL) { 1726 hostapd_config_free(conf); 1727 return NULL; 1728 } 1729 1730 /* Reading configuration file skipped, will be done in SET! 1731 * From reading the configuration till the end has to be done in 1732 * SET 1733 */ 1734 return conf; 1735} 1736 1737 1738static struct hostapd_iface * hostapd_data_alloc( 1739 struct hapd_interfaces *interfaces, struct hostapd_config *conf) 1740{ 1741 size_t i; 1742 struct hostapd_iface *hapd_iface = 1743 interfaces->iface[interfaces->count - 1]; 1744 struct hostapd_data *hapd; 1745 1746 hapd_iface->conf = conf; 1747 hapd_iface->num_bss = conf->num_bss; 1748 1749 hapd_iface->bss = os_zalloc(conf->num_bss * 1750 sizeof(struct hostapd_data *)); 1751 if (hapd_iface->bss == NULL) 1752 return NULL; 1753 1754 for (i = 0; i < conf->num_bss; i++) { 1755 hapd = hapd_iface->bss[i] = 1756 hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]); 1757 if (hapd == NULL) 1758 return NULL; 1759 hapd->msg_ctx = hapd; 1760 } 1761 1762 hapd_iface->interfaces = interfaces; 1763 1764 return hapd_iface; 1765} 1766 1767 1768int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf) 1769{ 1770 struct hostapd_config *conf = NULL; 1771 struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL; 1772 struct hostapd_data *hapd; 1773 char *ptr; 1774 size_t i, j; 1775 const char *conf_file = NULL, *phy_name = NULL; 1776 1777 if (os_strncmp(buf, "bss_config=", 11) == 0) { 1778 char *pos; 1779 phy_name = buf + 11; 1780 pos = os_strchr(phy_name, ':'); 1781 if (!pos) 1782 return -1; 1783 *pos++ = '\0'; 1784 conf_file = pos; 1785 if (!os_strlen(conf_file)) 1786 return -1; 1787 1788 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name, 1789 conf_file, 0); 1790 if (!hapd_iface) 1791 return -1; 1792 for (j = 0; j < interfaces->count; j++) { 1793 if (interfaces->iface[j] == hapd_iface) 1794 break; 1795 } 1796 if (j == interfaces->count) { 1797 struct hostapd_iface **tmp; 1798 tmp = os_realloc_array(interfaces->iface, 1799 interfaces->count + 1, 1800 sizeof(struct hostapd_iface *)); 1801 if (!tmp) { 1802 hostapd_interface_deinit_free(hapd_iface); 1803 return -1; 1804 } 1805 interfaces->iface = tmp; 1806 interfaces->iface[interfaces->count++] = hapd_iface; 1807 new_iface = hapd_iface; 1808 } 1809 1810 if (new_iface) { 1811 if (interfaces->driver_init(hapd_iface) || 1812 hostapd_setup_interface(hapd_iface)) { 1813 interfaces->count--; 1814 goto fail; 1815 } 1816 } else { 1817 /* Assign new BSS with bss[0]'s driver info */ 1818 hapd = hapd_iface->bss[hapd_iface->num_bss - 1]; 1819 hapd->driver = hapd_iface->bss[0]->driver; 1820 hapd->drv_priv = hapd_iface->bss[0]->drv_priv; 1821 os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr, 1822 ETH_ALEN); 1823 1824 if (start_ctrl_iface_bss(hapd) < 0 || 1825 (hapd_iface->state == HAPD_IFACE_ENABLED && 1826 hostapd_setup_bss(hapd, -1))) { 1827 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL; 1828 hapd_iface->conf->num_bss--; 1829 hapd_iface->num_bss--; 1830 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s", 1831 __func__, hapd, hapd->conf->iface); 1832 os_free(hapd); 1833 return -1; 1834 } 1835 } 1836 return 0; 1837 } 1838 1839 ptr = os_strchr(buf, ' '); 1840 if (ptr == NULL) 1841 return -1; 1842 *ptr++ = '\0'; 1843 1844 if (os_strncmp(ptr, "config=", 7) == 0) 1845 conf_file = ptr + 7; 1846 1847 for (i = 0; i < interfaces->count; i++) { 1848 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface, 1849 buf)) { 1850 wpa_printf(MSG_INFO, "Cannot add interface - it " 1851 "already exists"); 1852 return -1; 1853 } 1854 } 1855 1856 hapd_iface = hostapd_iface_alloc(interfaces); 1857 if (hapd_iface == NULL) { 1858 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory " 1859 "for interface", __func__); 1860 goto fail; 1861 } 1862 1863 if (conf_file && interfaces->config_read_cb) { 1864 conf = interfaces->config_read_cb(conf_file); 1865 if (conf && conf->bss) 1866 os_strlcpy(conf->bss[0]->iface, buf, 1867 sizeof(conf->bss[0]->iface)); 1868 } else 1869 conf = hostapd_config_alloc(interfaces, buf, ptr); 1870 if (conf == NULL || conf->bss == NULL) { 1871 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory " 1872 "for configuration", __func__); 1873 goto fail; 1874 } 1875 1876 hapd_iface = hostapd_data_alloc(interfaces, conf); 1877 if (hapd_iface == NULL) { 1878 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory " 1879 "for hostapd", __func__); 1880 goto fail; 1881 } 1882 1883 if (start_ctrl_iface(hapd_iface) < 0) 1884 goto fail; 1885 1886 wpa_printf(MSG_INFO, "Add interface '%s'", conf->bss[0]->iface); 1887 1888 return 0; 1889 1890fail: 1891 if (conf) 1892 hostapd_config_free(conf); 1893 if (hapd_iface) { 1894 if (hapd_iface->bss) { 1895 for (i = 0; i < hapd_iface->num_bss; i++) { 1896 hapd = hapd_iface->bss[i]; 1897 if (!hapd) 1898 continue; 1899 if (hapd_iface->interfaces && 1900 hapd_iface->interfaces->ctrl_iface_deinit) 1901 hapd_iface->interfaces-> 1902 ctrl_iface_deinit(hapd); 1903 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)", 1904 __func__, hapd_iface->bss[i], 1905 hapd->conf->iface); 1906 os_free(hapd); 1907 hapd_iface->bss[i] = NULL; 1908 } 1909 os_free(hapd_iface->bss); 1910 } 1911 wpa_printf(MSG_DEBUG, "%s: free iface %p", 1912 __func__, hapd_iface); 1913 os_free(hapd_iface); 1914 } 1915 return -1; 1916} 1917 1918 1919static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx) 1920{ 1921 size_t i; 1922 1923 wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface); 1924 1925 /* Remove hostapd_data only if it has already been initialized */ 1926 if (idx < iface->num_bss) { 1927 struct hostapd_data *hapd = iface->bss[idx]; 1928 1929 hostapd_bss_deinit(hapd); 1930 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)", 1931 __func__, hapd, hapd->conf->iface); 1932 hostapd_config_free_bss(hapd->conf); 1933 os_free(hapd); 1934 1935 iface->num_bss--; 1936 1937 for (i = idx; i < iface->num_bss; i++) 1938 iface->bss[i] = iface->bss[i + 1]; 1939 } else { 1940 hostapd_config_free_bss(iface->conf->bss[idx]); 1941 iface->conf->bss[idx] = NULL; 1942 } 1943 1944 iface->conf->num_bss--; 1945 for (i = idx; i < iface->conf->num_bss; i++) 1946 iface->conf->bss[i] = iface->conf->bss[i + 1]; 1947 1948 return 0; 1949} 1950 1951 1952int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf) 1953{ 1954 struct hostapd_iface *hapd_iface; 1955 size_t i, j, k = 0; 1956 1957 for (i = 0; i < interfaces->count; i++) { 1958 hapd_iface = interfaces->iface[i]; 1959 if (hapd_iface == NULL) 1960 return -1; 1961 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) { 1962 wpa_printf(MSG_INFO, "Remove interface '%s'", buf); 1963 hapd_iface->driver_ap_teardown = 1964 !!(hapd_iface->drv_flags & 1965 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT); 1966 1967 hostapd_interface_deinit_free(hapd_iface); 1968 k = i; 1969 while (k < (interfaces->count - 1)) { 1970 interfaces->iface[k] = 1971 interfaces->iface[k + 1]; 1972 k++; 1973 } 1974 interfaces->count--; 1975 return 0; 1976 } 1977 1978 for (j = 0; j < hapd_iface->conf->num_bss; j++) { 1979 if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) { 1980 hapd_iface->driver_ap_teardown = 1981 !(hapd_iface->drv_flags & 1982 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT); 1983 return hostapd_remove_bss(hapd_iface, j); 1984 } 1985 } 1986 } 1987 return -1; 1988} 1989 1990 1991/** 1992 * hostapd_new_assoc_sta - Notify that a new station associated with the AP 1993 * @hapd: Pointer to BSS data 1994 * @sta: Pointer to the associated STA data 1995 * @reassoc: 1 to indicate this was a re-association; 0 = first association 1996 * 1997 * This function will be called whenever a station associates with the AP. It 1998 * can be called from ieee802_11.c for drivers that export MLME to hostapd and 1999 * from drv_callbacks.c based on driver events for drivers that take care of 2000 * management frames (IEEE 802.11 authentication and association) internally. 2001 */ 2002void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta, 2003 int reassoc) 2004{ 2005 if (hapd->tkip_countermeasures) { 2006 hostapd_drv_sta_deauth(hapd, sta->addr, 2007 WLAN_REASON_MICHAEL_MIC_FAILURE); 2008 return; 2009 } 2010 2011 hostapd_prune_associations(hapd, sta->addr); 2012 2013 /* IEEE 802.11F (IAPP) */ 2014 if (hapd->conf->ieee802_11f) 2015 iapp_new_station(hapd->iapp, sta); 2016 2017#ifdef CONFIG_P2P 2018 if (sta->p2p_ie == NULL && !sta->no_p2p_set) { 2019 sta->no_p2p_set = 1; 2020 hapd->num_sta_no_p2p++; 2021 if (hapd->num_sta_no_p2p == 1) 2022 hostapd_p2p_non_p2p_sta_connected(hapd); 2023 } 2024#endif /* CONFIG_P2P */ 2025 2026 /* Start accounting here, if IEEE 802.1X and WPA are not used. 2027 * IEEE 802.1X/WPA code will start accounting after the station has 2028 * been authorized. */ 2029 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) { 2030 ap_sta_set_authorized(hapd, sta, 1); 2031 os_get_reltime(&sta->connected_time); 2032 accounting_sta_start(hapd, sta); 2033 } 2034 2035 /* Start IEEE 802.1X authentication process for new stations */ 2036 ieee802_1x_new_station(hapd, sta); 2037 if (reassoc) { 2038 if (sta->auth_alg != WLAN_AUTH_FT && 2039 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) 2040 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH); 2041 } else 2042 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm); 2043 2044 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) { 2045 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout " 2046 "for " MACSTR " (%d seconds - ap_max_inactivity)", 2047 __func__, MAC2STR(sta->addr), 2048 hapd->conf->ap_max_inactivity); 2049 eloop_cancel_timeout(ap_handle_timer, hapd, sta); 2050 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0, 2051 ap_handle_timer, hapd, sta); 2052 } 2053} 2054 2055 2056const char * hostapd_state_text(enum hostapd_iface_state s) 2057{ 2058 switch (s) { 2059 case HAPD_IFACE_UNINITIALIZED: 2060 return "UNINITIALIZED"; 2061 case HAPD_IFACE_DISABLED: 2062 return "DISABLED"; 2063 case HAPD_IFACE_COUNTRY_UPDATE: 2064 return "COUNTRY_UPDATE"; 2065 case HAPD_IFACE_ACS: 2066 return "ACS"; 2067 case HAPD_IFACE_HT_SCAN: 2068 return "HT_SCAN"; 2069 case HAPD_IFACE_DFS: 2070 return "DFS"; 2071 case HAPD_IFACE_ENABLED: 2072 return "ENABLED"; 2073 } 2074 2075 return "UNKNOWN"; 2076} 2077 2078 2079void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s) 2080{ 2081 wpa_printf(MSG_INFO, "%s: interface state %s->%s", 2082 iface->conf->bss[0]->iface, hostapd_state_text(iface->state), 2083 hostapd_state_text(s)); 2084 iface->state = s; 2085} 2086 2087 2088#ifdef NEED_AP_MLME 2089 2090static void free_beacon_data(struct beacon_data *beacon) 2091{ 2092 os_free(beacon->head); 2093 beacon->head = NULL; 2094 os_free(beacon->tail); 2095 beacon->tail = NULL; 2096 os_free(beacon->probe_resp); 2097 beacon->probe_resp = NULL; 2098 os_free(beacon->beacon_ies); 2099 beacon->beacon_ies = NULL; 2100 os_free(beacon->proberesp_ies); 2101 beacon->proberesp_ies = NULL; 2102 os_free(beacon->assocresp_ies); 2103 beacon->assocresp_ies = NULL; 2104} 2105 2106 2107static int hostapd_build_beacon_data(struct hostapd_iface *iface, 2108 struct beacon_data *beacon) 2109{ 2110 struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra; 2111 struct wpa_driver_ap_params params; 2112 int ret; 2113 struct hostapd_data *hapd = iface->bss[0]; 2114 2115 os_memset(beacon, 0, sizeof(*beacon)); 2116 ret = ieee802_11_build_ap_params(hapd, ¶ms); 2117 if (ret < 0) 2118 return ret; 2119 2120 ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra, 2121 &proberesp_extra, 2122 &assocresp_extra); 2123 if (ret) 2124 goto free_ap_params; 2125 2126 ret = -1; 2127 beacon->head = os_malloc(params.head_len); 2128 if (!beacon->head) 2129 goto free_ap_extra_ies; 2130 2131 os_memcpy(beacon->head, params.head, params.head_len); 2132 beacon->head_len = params.head_len; 2133 2134 beacon->tail = os_malloc(params.tail_len); 2135 if (!beacon->tail) 2136 goto free_beacon; 2137 2138 os_memcpy(beacon->tail, params.tail, params.tail_len); 2139 beacon->tail_len = params.tail_len; 2140 2141 if (params.proberesp != NULL) { 2142 beacon->probe_resp = os_malloc(params.proberesp_len); 2143 if (!beacon->probe_resp) 2144 goto free_beacon; 2145 2146 os_memcpy(beacon->probe_resp, params.proberesp, 2147 params.proberesp_len); 2148 beacon->probe_resp_len = params.proberesp_len; 2149 } 2150 2151 /* copy the extra ies */ 2152 if (beacon_extra) { 2153 beacon->beacon_ies = os_malloc(wpabuf_len(beacon_extra)); 2154 if (!beacon->beacon_ies) 2155 goto free_beacon; 2156 2157 os_memcpy(beacon->beacon_ies, 2158 beacon_extra->buf, wpabuf_len(beacon_extra)); 2159 beacon->beacon_ies_len = wpabuf_len(beacon_extra); 2160 } 2161 2162 if (proberesp_extra) { 2163 beacon->proberesp_ies = 2164 os_malloc(wpabuf_len(proberesp_extra)); 2165 if (!beacon->proberesp_ies) 2166 goto free_beacon; 2167 2168 os_memcpy(beacon->proberesp_ies, proberesp_extra->buf, 2169 wpabuf_len(proberesp_extra)); 2170 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra); 2171 } 2172 2173 if (assocresp_extra) { 2174 beacon->assocresp_ies = 2175 os_malloc(wpabuf_len(assocresp_extra)); 2176 if (!beacon->assocresp_ies) 2177 goto free_beacon; 2178 2179 os_memcpy(beacon->assocresp_ies, assocresp_extra->buf, 2180 wpabuf_len(assocresp_extra)); 2181 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra); 2182 } 2183 2184 ret = 0; 2185free_beacon: 2186 /* if the function fails, the caller should not free beacon data */ 2187 if (ret) 2188 free_beacon_data(beacon); 2189 2190free_ap_extra_ies: 2191 hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra, 2192 assocresp_extra); 2193free_ap_params: 2194 ieee802_11_free_ap_params(¶ms); 2195 return ret; 2196} 2197 2198 2199/* 2200 * TODO: This flow currently supports only changing frequency within the 2201 * same hw_mode. Any other changes to MAC parameters or provided settings (even 2202 * width) are not supported. 2203 */ 2204static int hostapd_change_config_freq(struct hostapd_data *hapd, 2205 struct hostapd_config *conf, 2206 struct hostapd_freq_params *params, 2207 struct hostapd_freq_params *old_params) 2208{ 2209 int channel; 2210 2211 if (!params->channel) { 2212 /* check if the new channel is supported by hw */ 2213 channel = hostapd_hw_get_channel(hapd, params->freq); 2214 if (!channel) 2215 return -1; 2216 } else { 2217 channel = params->channel; 2218 } 2219 2220 /* if a pointer to old_params is provided we save previous state */ 2221 if (old_params) { 2222 old_params->channel = conf->channel; 2223 old_params->ht_enabled = conf->ieee80211n; 2224 old_params->sec_channel_offset = conf->secondary_channel; 2225 } 2226 2227 conf->channel = channel; 2228 conf->ieee80211n = params->ht_enabled; 2229 conf->secondary_channel = params->sec_channel_offset; 2230 2231 /* TODO: maybe call here hostapd_config_check here? */ 2232 2233 return 0; 2234} 2235 2236 2237static int hostapd_fill_csa_settings(struct hostapd_iface *iface, 2238 struct csa_settings *settings) 2239{ 2240 struct hostapd_freq_params old_freq; 2241 int ret; 2242 2243 os_memset(&old_freq, 0, sizeof(old_freq)); 2244 if (!iface || !iface->freq || iface->csa_in_progress) 2245 return -1; 2246 2247 ret = hostapd_change_config_freq(iface->bss[0], iface->conf, 2248 &settings->freq_params, 2249 &old_freq); 2250 if (ret) 2251 return ret; 2252 2253 ret = hostapd_build_beacon_data(iface, &settings->beacon_after); 2254 2255 /* change back the configuration */ 2256 hostapd_change_config_freq(iface->bss[0], iface->conf, 2257 &old_freq, NULL); 2258 2259 if (ret) 2260 return ret; 2261 2262 /* set channel switch parameters for csa ie */ 2263 iface->cs_freq_params = settings->freq_params; 2264 iface->cs_count = settings->cs_count; 2265 iface->cs_block_tx = settings->block_tx; 2266 2267 ret = hostapd_build_beacon_data(iface, &settings->beacon_csa); 2268 if (ret) { 2269 free_beacon_data(&settings->beacon_after); 2270 return ret; 2271 } 2272 2273 settings->counter_offset_beacon = iface->cs_c_off_beacon; 2274 settings->counter_offset_presp = iface->cs_c_off_proberesp; 2275 2276 return 0; 2277} 2278 2279 2280void hostapd_cleanup_cs_params(struct hostapd_data *hapd) 2281{ 2282 os_memset(&hapd->iface->cs_freq_params, 0, 2283 sizeof(hapd->iface->cs_freq_params)); 2284 hapd->iface->cs_count = 0; 2285 hapd->iface->cs_block_tx = 0; 2286 hapd->iface->cs_c_off_beacon = 0; 2287 hapd->iface->cs_c_off_proberesp = 0; 2288 hapd->iface->csa_in_progress = 0; 2289} 2290 2291 2292int hostapd_switch_channel(struct hostapd_data *hapd, 2293 struct csa_settings *settings) 2294{ 2295 int ret; 2296 ret = hostapd_fill_csa_settings(hapd->iface, settings); 2297 if (ret) 2298 return ret; 2299 2300 ret = hostapd_drv_switch_channel(hapd, settings); 2301 free_beacon_data(&settings->beacon_csa); 2302 free_beacon_data(&settings->beacon_after); 2303 2304 if (ret) { 2305 /* if we failed, clean cs parameters */ 2306 hostapd_cleanup_cs_params(hapd); 2307 return ret; 2308 } 2309 2310 hapd->iface->csa_in_progress = 1; 2311 return 0; 2312} 2313 2314#endif /* NEED_AP_MLME */ 2315