hostapd.c revision 6c0da2bb83f6915d8260912362692d1a742e057b
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 "eap_server/tncs.h" 18#include "hostapd.h" 19#include "authsrv.h" 20#include "sta_info.h" 21#include "accounting.h" 22#include "ap_list.h" 23#include "beacon.h" 24#include "iapp.h" 25#include "ieee802_1x.h" 26#include "ieee802_11_auth.h" 27#include "vlan_init.h" 28#include "wpa_auth.h" 29#include "wps_hostapd.h" 30#include "hw_features.h" 31#include "wpa_auth_glue.h" 32#include "ap_drv_ops.h" 33#include "ap_config.h" 34#include "p2p_hostapd.h" 35#include "gas_serv.h" 36#include "dfs.h" 37#include "ieee802_11.h" 38#include "bss_load.h" 39#include "x_snoop.h" 40#include "dhcp_snoop.h" 41#include "ndisc_snoop.h" 42 43 44static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason); 45static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd); 46static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd); 47static int setup_interface2(struct hostapd_iface *iface); 48static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx); 49 50 51int hostapd_for_each_interface(struct hapd_interfaces *interfaces, 52 int (*cb)(struct hostapd_iface *iface, 53 void *ctx), void *ctx) 54{ 55 size_t i; 56 int ret; 57 58 for (i = 0; i < interfaces->count; i++) { 59 ret = cb(interfaces->iface[i], ctx); 60 if (ret) 61 return ret; 62 } 63 64 return 0; 65} 66 67 68static void hostapd_reload_bss(struct hostapd_data *hapd) 69{ 70 struct hostapd_ssid *ssid; 71 72#ifndef CONFIG_NO_RADIUS 73 radius_client_reconfig(hapd->radius, hapd->conf->radius); 74#endif /* CONFIG_NO_RADIUS */ 75 76 ssid = &hapd->conf->ssid; 77 if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next && 78 ssid->wpa_passphrase_set && ssid->wpa_passphrase) { 79 /* 80 * Force PSK to be derived again since SSID or passphrase may 81 * have changed. 82 */ 83 os_free(ssid->wpa_psk); 84 ssid->wpa_psk = NULL; 85 } 86 if (hostapd_setup_wpa_psk(hapd->conf)) { 87 wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK " 88 "after reloading configuration"); 89 } 90 91 if (hapd->conf->ieee802_1x || hapd->conf->wpa) 92 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 1); 93 else 94 hostapd_set_drv_ieee8021x(hapd, hapd->conf->iface, 0); 95 96 if ((hapd->conf->wpa || hapd->conf->osen) && hapd->wpa_auth == NULL) { 97 hostapd_setup_wpa(hapd); 98 if (hapd->wpa_auth) 99 wpa_init_keys(hapd->wpa_auth); 100 } else if (hapd->conf->wpa) { 101 const u8 *wpa_ie; 102 size_t wpa_ie_len; 103 hostapd_reconfig_wpa(hapd); 104 wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len); 105 if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) 106 wpa_printf(MSG_ERROR, "Failed to configure WPA IE for " 107 "the kernel driver."); 108 } else if (hapd->wpa_auth) { 109 wpa_deinit(hapd->wpa_auth); 110 hapd->wpa_auth = NULL; 111 hostapd_set_privacy(hapd, 0); 112 hostapd_setup_encryption(hapd->conf->iface, hapd); 113 hostapd_set_generic_elem(hapd, (u8 *) "", 0); 114 } 115 116 ieee802_11_set_beacon(hapd); 117 hostapd_update_wps(hapd); 118 119 if (hapd->conf->ssid.ssid_set && 120 hostapd_set_ssid(hapd, hapd->conf->ssid.ssid, 121 hapd->conf->ssid.ssid_len)) { 122 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver"); 123 /* try to continue */ 124 } 125 wpa_printf(MSG_DEBUG, "Reconfigured interface %s", hapd->conf->iface); 126} 127 128 129static void hostapd_clear_old(struct hostapd_iface *iface) 130{ 131 size_t j; 132 133 /* 134 * Deauthenticate all stations since the new configuration may not 135 * allow them to use the BSS anymore. 136 */ 137 for (j = 0; j < iface->num_bss; j++) { 138 hostapd_flush_old_stations(iface->bss[j], 139 WLAN_REASON_PREV_AUTH_NOT_VALID); 140 hostapd_broadcast_wep_clear(iface->bss[j]); 141 142#ifndef CONFIG_NO_RADIUS 143 /* TODO: update dynamic data based on changed configuration 144 * items (e.g., open/close sockets, etc.) */ 145 radius_client_flush(iface->bss[j]->radius, 0); 146#endif /* CONFIG_NO_RADIUS */ 147 } 148} 149 150 151int hostapd_reload_config(struct hostapd_iface *iface) 152{ 153 struct hostapd_data *hapd = iface->bss[0]; 154 struct hostapd_config *newconf, *oldconf; 155 size_t j; 156 157 if (iface->config_fname == NULL) { 158 /* Only in-memory config in use - assume it has been updated */ 159 hostapd_clear_old(iface); 160 for (j = 0; j < iface->num_bss; j++) 161 hostapd_reload_bss(iface->bss[j]); 162 return 0; 163 } 164 165 if (iface->interfaces == NULL || 166 iface->interfaces->config_read_cb == NULL) 167 return -1; 168 newconf = iface->interfaces->config_read_cb(iface->config_fname); 169 if (newconf == NULL) 170 return -1; 171 172 hostapd_clear_old(iface); 173 174 oldconf = hapd->iconf; 175 iface->conf = newconf; 176 177 for (j = 0; j < iface->num_bss; j++) { 178 hapd = iface->bss[j]; 179 hapd->iconf = newconf; 180 hapd->iconf->channel = oldconf->channel; 181 hapd->iconf->secondary_channel = oldconf->secondary_channel; 182 hapd->iconf->ieee80211n = oldconf->ieee80211n; 183 hapd->iconf->ieee80211ac = oldconf->ieee80211ac; 184 hapd->iconf->ht_capab = oldconf->ht_capab; 185 hapd->iconf->vht_capab = oldconf->vht_capab; 186 hapd->iconf->vht_oper_chwidth = oldconf->vht_oper_chwidth; 187 hapd->iconf->vht_oper_centr_freq_seg0_idx = 188 oldconf->vht_oper_centr_freq_seg0_idx; 189 hapd->iconf->vht_oper_centr_freq_seg1_idx = 190 oldconf->vht_oper_centr_freq_seg1_idx; 191 hapd->conf = newconf->bss[j]; 192 hostapd_reload_bss(hapd); 193 } 194 195 hostapd_config_free(oldconf); 196 197 198 return 0; 199} 200 201 202static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd, 203 char *ifname) 204{ 205 int i; 206 207 for (i = 0; i < NUM_WEP_KEYS; i++) { 208 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, NULL, i, 209 0, NULL, 0, NULL, 0)) { 210 wpa_printf(MSG_DEBUG, "Failed to clear default " 211 "encryption keys (ifname=%s keyidx=%d)", 212 ifname, i); 213 } 214 } 215#ifdef CONFIG_IEEE80211W 216 if (hapd->conf->ieee80211w) { 217 for (i = NUM_WEP_KEYS; i < NUM_WEP_KEYS + 2; i++) { 218 if (hostapd_drv_set_key(ifname, hapd, WPA_ALG_NONE, 219 NULL, i, 0, NULL, 220 0, NULL, 0)) { 221 wpa_printf(MSG_DEBUG, "Failed to clear " 222 "default mgmt encryption keys " 223 "(ifname=%s keyidx=%d)", ifname, i); 224 } 225 } 226 } 227#endif /* CONFIG_IEEE80211W */ 228} 229 230 231static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd) 232{ 233 hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface); 234 return 0; 235} 236 237 238static int hostapd_broadcast_wep_set(struct hostapd_data *hapd) 239{ 240 int errors = 0, idx; 241 struct hostapd_ssid *ssid = &hapd->conf->ssid; 242 243 idx = ssid->wep.idx; 244 if (ssid->wep.default_len && 245 hostapd_drv_set_key(hapd->conf->iface, 246 hapd, WPA_ALG_WEP, broadcast_ether_addr, idx, 247 1, NULL, 0, ssid->wep.key[idx], 248 ssid->wep.len[idx])) { 249 wpa_printf(MSG_WARNING, "Could not set WEP encryption."); 250 errors++; 251 } 252 253 return errors; 254} 255 256 257static void hostapd_free_hapd_data(struct hostapd_data *hapd) 258{ 259 os_free(hapd->probereq_cb); 260 hapd->probereq_cb = NULL; 261 262#ifdef CONFIG_P2P 263 wpabuf_free(hapd->p2p_beacon_ie); 264 hapd->p2p_beacon_ie = NULL; 265 wpabuf_free(hapd->p2p_probe_resp_ie); 266 hapd->p2p_probe_resp_ie = NULL; 267#endif /* CONFIG_P2P */ 268 269 if (!hapd->started) { 270 wpa_printf(MSG_ERROR, "%s: Interface %s wasn't started", 271 __func__, hapd->conf->iface); 272 return; 273 } 274 hapd->started = 0; 275 276 wpa_printf(MSG_DEBUG, "%s(%s)", __func__, hapd->conf->iface); 277 iapp_deinit(hapd->iapp); 278 hapd->iapp = NULL; 279 accounting_deinit(hapd); 280 hostapd_deinit_wpa(hapd); 281 vlan_deinit(hapd); 282 hostapd_acl_deinit(hapd); 283#ifndef CONFIG_NO_RADIUS 284 radius_client_deinit(hapd->radius); 285 hapd->radius = NULL; 286 radius_das_deinit(hapd->radius_das); 287 hapd->radius_das = NULL; 288#endif /* CONFIG_NO_RADIUS */ 289 290 hostapd_deinit_wps(hapd); 291 292 authsrv_deinit(hapd); 293 294 if (hapd->interface_added) { 295 hapd->interface_added = 0; 296 if (hostapd_if_remove(hapd, WPA_IF_AP_BSS, hapd->conf->iface)) { 297 wpa_printf(MSG_WARNING, 298 "Failed to remove BSS interface %s", 299 hapd->conf->iface); 300 hapd->interface_added = 1; 301 } else { 302 /* 303 * Since this was a dynamically added interface, the 304 * driver wrapper may have removed its internal instance 305 * and hapd->drv_priv is not valid anymore. 306 */ 307 hapd->drv_priv = NULL; 308 } 309 } 310 311 wpabuf_free(hapd->time_adv); 312 313#ifdef CONFIG_INTERWORKING 314 gas_serv_deinit(hapd); 315#endif /* CONFIG_INTERWORKING */ 316 317 bss_load_update_deinit(hapd); 318 ndisc_snoop_deinit(hapd); 319 dhcp_snoop_deinit(hapd); 320 x_snoop_deinit(hapd); 321 322#ifdef CONFIG_SQLITE 323 bin_clear_free(hapd->tmp_eap_user.identity, 324 hapd->tmp_eap_user.identity_len); 325 bin_clear_free(hapd->tmp_eap_user.password, 326 hapd->tmp_eap_user.password_len); 327#endif /* CONFIG_SQLITE */ 328 329#ifdef CONFIG_MESH 330 wpabuf_free(hapd->mesh_pending_auth); 331 hapd->mesh_pending_auth = NULL; 332#endif /* CONFIG_MESH */ 333} 334 335 336/** 337 * hostapd_cleanup - Per-BSS cleanup (deinitialization) 338 * @hapd: Pointer to BSS data 339 * 340 * This function is used to free all per-BSS data structures and resources. 341 * Most of the modules that are initialized in hostapd_setup_bss() are 342 * deinitialized here. 343 */ 344static void hostapd_cleanup(struct hostapd_data *hapd) 345{ 346 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd, 347 hapd->conf->iface); 348 if (hapd->iface->interfaces && 349 hapd->iface->interfaces->ctrl_iface_deinit) 350 hapd->iface->interfaces->ctrl_iface_deinit(hapd); 351 hostapd_free_hapd_data(hapd); 352} 353 354 355static void hostapd_cleanup_iface_partial(struct hostapd_iface *iface) 356{ 357 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 358 hostapd_free_hw_features(iface->hw_features, iface->num_hw_features); 359 iface->hw_features = NULL; 360 os_free(iface->current_rates); 361 iface->current_rates = NULL; 362 os_free(iface->basic_rates); 363 iface->basic_rates = NULL; 364 ap_list_deinit(iface); 365} 366 367 368/** 369 * hostapd_cleanup_iface - Complete per-interface cleanup 370 * @iface: Pointer to interface data 371 * 372 * This function is called after per-BSS data structures are deinitialized 373 * with hostapd_cleanup(). 374 */ 375static void hostapd_cleanup_iface(struct hostapd_iface *iface) 376{ 377 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 378 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL); 379 380 hostapd_cleanup_iface_partial(iface); 381 hostapd_config_free(iface->conf); 382 iface->conf = NULL; 383 384 os_free(iface->config_fname); 385 os_free(iface->bss); 386 wpa_printf(MSG_DEBUG, "%s: free iface=%p", __func__, iface); 387 os_free(iface); 388} 389 390 391static void hostapd_clear_wep(struct hostapd_data *hapd) 392{ 393 if (hapd->drv_priv && !hapd->iface->driver_ap_teardown) { 394 hostapd_set_privacy(hapd, 0); 395 hostapd_broadcast_wep_clear(hapd); 396 } 397} 398 399 400static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd) 401{ 402 int i; 403 404 hostapd_broadcast_wep_set(hapd); 405 406 if (hapd->conf->ssid.wep.default_len) { 407 hostapd_set_privacy(hapd, 1); 408 return 0; 409 } 410 411 /* 412 * When IEEE 802.1X is not enabled, the driver may need to know how to 413 * set authentication algorithms for static WEP. 414 */ 415 hostapd_drv_set_authmode(hapd, hapd->conf->auth_algs); 416 417 for (i = 0; i < 4; i++) { 418 if (hapd->conf->ssid.wep.key[i] && 419 hostapd_drv_set_key(iface, hapd, WPA_ALG_WEP, NULL, i, 420 i == hapd->conf->ssid.wep.idx, NULL, 0, 421 hapd->conf->ssid.wep.key[i], 422 hapd->conf->ssid.wep.len[i])) { 423 wpa_printf(MSG_WARNING, "Could not set WEP " 424 "encryption."); 425 return -1; 426 } 427 if (hapd->conf->ssid.wep.key[i] && 428 i == hapd->conf->ssid.wep.idx) 429 hostapd_set_privacy(hapd, 1); 430 } 431 432 return 0; 433} 434 435 436static int hostapd_flush_old_stations(struct hostapd_data *hapd, u16 reason) 437{ 438 int ret = 0; 439 u8 addr[ETH_ALEN]; 440 441 if (hostapd_drv_none(hapd) || hapd->drv_priv == NULL) 442 return 0; 443 444 if (!hapd->iface->driver_ap_teardown) { 445 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, 446 "Flushing old station entries"); 447 448 if (hostapd_flush(hapd)) { 449 wpa_msg(hapd->msg_ctx, MSG_WARNING, 450 "Could not connect to kernel driver"); 451 ret = -1; 452 } 453 } 454 wpa_dbg(hapd->msg_ctx, MSG_DEBUG, "Deauthenticate all stations"); 455 os_memset(addr, 0xff, ETH_ALEN); 456 hostapd_drv_sta_deauth(hapd, addr, reason); 457 hostapd_free_stas(hapd); 458 459 return ret; 460} 461 462 463static void hostapd_bss_deinit_no_free(struct hostapd_data *hapd) 464{ 465 hostapd_free_stas(hapd); 466 hostapd_flush_old_stations(hapd, WLAN_REASON_DEAUTH_LEAVING); 467 hostapd_clear_wep(hapd); 468} 469 470 471/** 472 * hostapd_validate_bssid_configuration - Validate BSSID configuration 473 * @iface: Pointer to interface data 474 * Returns: 0 on success, -1 on failure 475 * 476 * This function is used to validate that the configured BSSIDs are valid. 477 */ 478static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface) 479{ 480 u8 mask[ETH_ALEN] = { 0 }; 481 struct hostapd_data *hapd = iface->bss[0]; 482 unsigned int i = iface->conf->num_bss, bits = 0, j; 483 int auto_addr = 0; 484 485 if (hostapd_drv_none(hapd)) 486 return 0; 487 488 /* Generate BSSID mask that is large enough to cover the BSSIDs. */ 489 490 /* Determine the bits necessary to cover the number of BSSIDs. */ 491 for (i--; i; i >>= 1) 492 bits++; 493 494 /* Determine the bits necessary to any configured BSSIDs, 495 if they are higher than the number of BSSIDs. */ 496 for (j = 0; j < iface->conf->num_bss; j++) { 497 if (hostapd_mac_comp_empty(iface->conf->bss[j]->bssid) == 0) { 498 if (j) 499 auto_addr++; 500 continue; 501 } 502 503 for (i = 0; i < ETH_ALEN; i++) { 504 mask[i] |= 505 iface->conf->bss[j]->bssid[i] ^ 506 hapd->own_addr[i]; 507 } 508 } 509 510 if (!auto_addr) 511 goto skip_mask_ext; 512 513 for (i = 0; i < ETH_ALEN && mask[i] == 0; i++) 514 ; 515 j = 0; 516 if (i < ETH_ALEN) { 517 j = (5 - i) * 8; 518 519 while (mask[i] != 0) { 520 mask[i] >>= 1; 521 j++; 522 } 523 } 524 525 if (bits < j) 526 bits = j; 527 528 if (bits > 40) { 529 wpa_printf(MSG_ERROR, "Too many bits in the BSSID mask (%u)", 530 bits); 531 return -1; 532 } 533 534 os_memset(mask, 0xff, ETH_ALEN); 535 j = bits / 8; 536 for (i = 5; i > 5 - j; i--) 537 mask[i] = 0; 538 j = bits % 8; 539 while (j--) 540 mask[i] <<= 1; 541 542skip_mask_ext: 543 wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)", 544 (unsigned long) iface->conf->num_bss, MAC2STR(mask), bits); 545 546 if (!auto_addr) 547 return 0; 548 549 for (i = 0; i < ETH_ALEN; i++) { 550 if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) { 551 wpa_printf(MSG_ERROR, "Invalid BSSID mask " MACSTR 552 " for start address " MACSTR ".", 553 MAC2STR(mask), MAC2STR(hapd->own_addr)); 554 wpa_printf(MSG_ERROR, "Start address must be the " 555 "first address in the block (i.e., addr " 556 "AND mask == addr)."); 557 return -1; 558 } 559 } 560 561 return 0; 562} 563 564 565static int mac_in_conf(struct hostapd_config *conf, const void *a) 566{ 567 size_t i; 568 569 for (i = 0; i < conf->num_bss; i++) { 570 if (hostapd_mac_comp(conf->bss[i]->bssid, a) == 0) { 571 return 1; 572 } 573 } 574 575 return 0; 576} 577 578 579#ifndef CONFIG_NO_RADIUS 580 581static int hostapd_das_nas_mismatch(struct hostapd_data *hapd, 582 struct radius_das_attrs *attr) 583{ 584 if (attr->nas_identifier && 585 (!hapd->conf->nas_identifier || 586 os_strlen(hapd->conf->nas_identifier) != 587 attr->nas_identifier_len || 588 os_memcmp(hapd->conf->nas_identifier, attr->nas_identifier, 589 attr->nas_identifier_len) != 0)) { 590 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-Identifier mismatch"); 591 return 1; 592 } 593 594 if (attr->nas_ip_addr && 595 (hapd->conf->own_ip_addr.af != AF_INET || 596 os_memcmp(&hapd->conf->own_ip_addr.u.v4, attr->nas_ip_addr, 4) != 597 0)) { 598 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IP-Address mismatch"); 599 return 1; 600 } 601 602#ifdef CONFIG_IPV6 603 if (attr->nas_ipv6_addr && 604 (hapd->conf->own_ip_addr.af != AF_INET6 || 605 os_memcmp(&hapd->conf->own_ip_addr.u.v6, attr->nas_ipv6_addr, 16) 606 != 0)) { 607 wpa_printf(MSG_DEBUG, "RADIUS DAS: NAS-IPv6-Address mismatch"); 608 return 1; 609 } 610#endif /* CONFIG_IPV6 */ 611 612 return 0; 613} 614 615 616static struct sta_info * hostapd_das_find_sta(struct hostapd_data *hapd, 617 struct radius_das_attrs *attr) 618{ 619 struct sta_info *sta = NULL; 620 char buf[128]; 621 622 if (attr->sta_addr) 623 sta = ap_get_sta(hapd, attr->sta_addr); 624 625 if (sta == NULL && attr->acct_session_id && 626 attr->acct_session_id_len == 17) { 627 for (sta = hapd->sta_list; sta; sta = sta->next) { 628 os_snprintf(buf, sizeof(buf), "%08X-%08X", 629 sta->acct_session_id_hi, 630 sta->acct_session_id_lo); 631 if (os_memcmp(attr->acct_session_id, buf, 17) == 0) 632 break; 633 } 634 } 635 636 if (sta == NULL && attr->cui) { 637 for (sta = hapd->sta_list; sta; sta = sta->next) { 638 struct wpabuf *cui; 639 cui = ieee802_1x_get_radius_cui(sta->eapol_sm); 640 if (cui && wpabuf_len(cui) == attr->cui_len && 641 os_memcmp(wpabuf_head(cui), attr->cui, 642 attr->cui_len) == 0) 643 break; 644 } 645 } 646 647 if (sta == NULL && attr->user_name) { 648 for (sta = hapd->sta_list; sta; sta = sta->next) { 649 u8 *identity; 650 size_t identity_len; 651 identity = ieee802_1x_get_identity(sta->eapol_sm, 652 &identity_len); 653 if (identity && 654 identity_len == attr->user_name_len && 655 os_memcmp(identity, attr->user_name, identity_len) 656 == 0) 657 break; 658 } 659 } 660 661 return sta; 662} 663 664 665static enum radius_das_res 666hostapd_das_disconnect(void *ctx, struct radius_das_attrs *attr) 667{ 668 struct hostapd_data *hapd = ctx; 669 struct sta_info *sta; 670 671 if (hostapd_das_nas_mismatch(hapd, attr)) 672 return RADIUS_DAS_NAS_MISMATCH; 673 674 sta = hostapd_das_find_sta(hapd, attr); 675 if (sta == NULL) 676 return RADIUS_DAS_SESSION_NOT_FOUND; 677 678 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr); 679 680 hostapd_drv_sta_deauth(hapd, sta->addr, 681 WLAN_REASON_PREV_AUTH_NOT_VALID); 682 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_PREV_AUTH_NOT_VALID); 683 684 return RADIUS_DAS_SUCCESS; 685} 686 687#endif /* CONFIG_NO_RADIUS */ 688 689 690/** 691 * hostapd_setup_bss - Per-BSS setup (initialization) 692 * @hapd: Pointer to BSS data 693 * @first: Whether this BSS is the first BSS of an interface; -1 = not first, 694 * but interface may exist 695 * 696 * This function is used to initialize all per-BSS data structures and 697 * resources. This gets called in a loop for each BSS when an interface is 698 * initialized. Most of the modules that are initialized here will be 699 * deinitialized in hostapd_cleanup(). 700 */ 701static int hostapd_setup_bss(struct hostapd_data *hapd, int first) 702{ 703 struct hostapd_bss_config *conf = hapd->conf; 704 u8 ssid[HOSTAPD_MAX_SSID_LEN + 1]; 705 int ssid_len, set_ssid; 706 char force_ifname[IFNAMSIZ]; 707 u8 if_addr[ETH_ALEN]; 708 int flush_old_stations = 1; 709 710 wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s), first=%d)", 711 __func__, hapd, conf->iface, first); 712 713#ifdef EAP_SERVER_TNC 714 if (conf->tnc && tncs_global_init() < 0) { 715 wpa_printf(MSG_ERROR, "Failed to initialize TNCS"); 716 return -1; 717 } 718#endif /* EAP_SERVER_TNC */ 719 720 if (hapd->started) { 721 wpa_printf(MSG_ERROR, "%s: Interface %s was already started", 722 __func__, conf->iface); 723 return -1; 724 } 725 hapd->started = 1; 726 727 if (!first || first == -1) { 728 if (hostapd_mac_comp_empty(conf->bssid) == 0) { 729 /* Allocate the next available BSSID. */ 730 do { 731 inc_byte_array(hapd->own_addr, ETH_ALEN); 732 } while (mac_in_conf(hapd->iconf, hapd->own_addr)); 733 } else { 734 /* Allocate the configured BSSID. */ 735 os_memcpy(hapd->own_addr, conf->bssid, ETH_ALEN); 736 737 if (hostapd_mac_comp(hapd->own_addr, 738 hapd->iface->bss[0]->own_addr) == 739 0) { 740 wpa_printf(MSG_ERROR, "BSS '%s' may not have " 741 "BSSID set to the MAC address of " 742 "the radio", conf->iface); 743 return -1; 744 } 745 } 746 747 hapd->interface_added = 1; 748 if (hostapd_if_add(hapd->iface->bss[0], WPA_IF_AP_BSS, 749 conf->iface, hapd->own_addr, hapd, 750 &hapd->drv_priv, force_ifname, if_addr, 751 conf->bridge[0] ? conf->bridge : NULL, 752 first == -1)) { 753 wpa_printf(MSG_ERROR, "Failed to add BSS (BSSID=" 754 MACSTR ")", MAC2STR(hapd->own_addr)); 755 hapd->interface_added = 0; 756 return -1; 757 } 758 } 759 760 if (conf->wmm_enabled < 0) 761 conf->wmm_enabled = hapd->iconf->ieee80211n; 762 763#ifdef CONFIG_MESH 764 if (hapd->iface->mconf == NULL) 765 flush_old_stations = 0; 766#endif /* CONFIG_MESH */ 767 768 if (flush_old_stations) 769 hostapd_flush_old_stations(hapd, 770 WLAN_REASON_PREV_AUTH_NOT_VALID); 771 hostapd_set_privacy(hapd, 0); 772 773 hostapd_broadcast_wep_clear(hapd); 774 if (hostapd_setup_encryption(conf->iface, hapd)) 775 return -1; 776 777 /* 778 * Fetch the SSID from the system and use it or, 779 * if one was specified in the config file, verify they 780 * match. 781 */ 782 ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid)); 783 if (ssid_len < 0) { 784 wpa_printf(MSG_ERROR, "Could not read SSID from system"); 785 return -1; 786 } 787 if (conf->ssid.ssid_set) { 788 /* 789 * If SSID is specified in the config file and it differs 790 * from what is being used then force installation of the 791 * new SSID. 792 */ 793 set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len || 794 os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0); 795 } else { 796 /* 797 * No SSID in the config file; just use the one we got 798 * from the system. 799 */ 800 set_ssid = 0; 801 conf->ssid.ssid_len = ssid_len; 802 os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len); 803 } 804 805 if (!hostapd_drv_none(hapd)) { 806 wpa_printf(MSG_ERROR, "Using interface %s with hwaddr " MACSTR 807 " and ssid \"%s\"", 808 conf->iface, MAC2STR(hapd->own_addr), 809 wpa_ssid_txt(conf->ssid.ssid, conf->ssid.ssid_len)); 810 } 811 812 if (hostapd_setup_wpa_psk(conf)) { 813 wpa_printf(MSG_ERROR, "WPA-PSK setup failed."); 814 return -1; 815 } 816 817 /* Set SSID for the kernel driver (to be used in beacon and probe 818 * response frames) */ 819 if (set_ssid && hostapd_set_ssid(hapd, conf->ssid.ssid, 820 conf->ssid.ssid_len)) { 821 wpa_printf(MSG_ERROR, "Could not set SSID for kernel driver"); 822 return -1; 823 } 824 825 if (wpa_debug_level <= MSG_MSGDUMP) 826 conf->radius->msg_dumps = 1; 827#ifndef CONFIG_NO_RADIUS 828 hapd->radius = radius_client_init(hapd, conf->radius); 829 if (hapd->radius == NULL) { 830 wpa_printf(MSG_ERROR, "RADIUS client initialization failed."); 831 return -1; 832 } 833 834 if (conf->radius_das_port) { 835 struct radius_das_conf das_conf; 836 os_memset(&das_conf, 0, sizeof(das_conf)); 837 das_conf.port = conf->radius_das_port; 838 das_conf.shared_secret = conf->radius_das_shared_secret; 839 das_conf.shared_secret_len = 840 conf->radius_das_shared_secret_len; 841 das_conf.client_addr = &conf->radius_das_client_addr; 842 das_conf.time_window = conf->radius_das_time_window; 843 das_conf.require_event_timestamp = 844 conf->radius_das_require_event_timestamp; 845 das_conf.ctx = hapd; 846 das_conf.disconnect = hostapd_das_disconnect; 847 hapd->radius_das = radius_das_init(&das_conf); 848 if (hapd->radius_das == NULL) { 849 wpa_printf(MSG_ERROR, "RADIUS DAS initialization " 850 "failed."); 851 return -1; 852 } 853 } 854#endif /* CONFIG_NO_RADIUS */ 855 856 if (hostapd_acl_init(hapd)) { 857 wpa_printf(MSG_ERROR, "ACL initialization failed."); 858 return -1; 859 } 860 if (hostapd_init_wps(hapd, conf)) 861 return -1; 862 863 if (authsrv_init(hapd) < 0) 864 return -1; 865 866 if (ieee802_1x_init(hapd)) { 867 wpa_printf(MSG_ERROR, "IEEE 802.1X initialization failed."); 868 return -1; 869 } 870 871 if ((conf->wpa || conf->osen) && hostapd_setup_wpa(hapd)) 872 return -1; 873 874 if (accounting_init(hapd)) { 875 wpa_printf(MSG_ERROR, "Accounting initialization failed."); 876 return -1; 877 } 878 879 if (conf->ieee802_11f && 880 (hapd->iapp = iapp_init(hapd, conf->iapp_iface)) == NULL) { 881 wpa_printf(MSG_ERROR, "IEEE 802.11F (IAPP) initialization " 882 "failed."); 883 return -1; 884 } 885 886#ifdef CONFIG_INTERWORKING 887 if (gas_serv_init(hapd)) { 888 wpa_printf(MSG_ERROR, "GAS server initialization failed"); 889 return -1; 890 } 891 892 if (conf->qos_map_set_len && 893 hostapd_drv_set_qos_map(hapd, conf->qos_map_set, 894 conf->qos_map_set_len)) { 895 wpa_printf(MSG_ERROR, "Failed to initialize QoS Map"); 896 return -1; 897 } 898#endif /* CONFIG_INTERWORKING */ 899 900 if (conf->bss_load_update_period && bss_load_update_init(hapd)) { 901 wpa_printf(MSG_ERROR, "BSS Load initialization failed"); 902 return -1; 903 } 904 905 if (conf->proxy_arp) { 906 if (x_snoop_init(hapd)) { 907 wpa_printf(MSG_ERROR, 908 "Generic snooping infrastructure initialization failed"); 909 return -1; 910 } 911 912 if (dhcp_snoop_init(hapd)) { 913 wpa_printf(MSG_ERROR, 914 "DHCP snooping initialization failed"); 915 return -1; 916 } 917 918 if (ndisc_snoop_init(hapd)) { 919 wpa_printf(MSG_ERROR, 920 "Neighbor Discovery snooping initialization failed"); 921 return -1; 922 } 923 } 924 925 if (!hostapd_drv_none(hapd) && vlan_init(hapd)) { 926 wpa_printf(MSG_ERROR, "VLAN initialization failed."); 927 return -1; 928 } 929 930 if (!conf->start_disabled && ieee802_11_set_beacon(hapd) < 0) 931 return -1; 932 933 if (hapd->wpa_auth && wpa_init_keys(hapd->wpa_auth) < 0) 934 return -1; 935 936 if (hapd->driver && hapd->driver->set_operstate) 937 hapd->driver->set_operstate(hapd->drv_priv, 1); 938 939 return 0; 940} 941 942 943static void hostapd_tx_queue_params(struct hostapd_iface *iface) 944{ 945 struct hostapd_data *hapd = iface->bss[0]; 946 int i; 947 struct hostapd_tx_queue_params *p; 948 949#ifdef CONFIG_MESH 950 if (iface->mconf == NULL) 951 return; 952#endif /* CONFIG_MESH */ 953 954 for (i = 0; i < NUM_TX_QUEUES; i++) { 955 p = &iface->conf->tx_queue[i]; 956 957 if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin, 958 p->cwmax, p->burst)) { 959 wpa_printf(MSG_DEBUG, "Failed to set TX queue " 960 "parameters for queue %d.", i); 961 /* Continue anyway */ 962 } 963 } 964} 965 966 967static int hostapd_set_acl_list(struct hostapd_data *hapd, 968 struct mac_acl_entry *mac_acl, 969 int n_entries, u8 accept_acl) 970{ 971 struct hostapd_acl_params *acl_params; 972 int i, err; 973 974 acl_params = os_zalloc(sizeof(*acl_params) + 975 (n_entries * sizeof(acl_params->mac_acl[0]))); 976 if (!acl_params) 977 return -ENOMEM; 978 979 for (i = 0; i < n_entries; i++) 980 os_memcpy(acl_params->mac_acl[i].addr, mac_acl[i].addr, 981 ETH_ALEN); 982 983 acl_params->acl_policy = accept_acl; 984 acl_params->num_mac_acl = n_entries; 985 986 err = hostapd_drv_set_acl(hapd, acl_params); 987 988 os_free(acl_params); 989 990 return err; 991} 992 993 994static void hostapd_set_acl(struct hostapd_data *hapd) 995{ 996 struct hostapd_config *conf = hapd->iconf; 997 int err; 998 u8 accept_acl; 999 1000 if (hapd->iface->drv_max_acl_mac_addrs == 0) 1001 return; 1002 1003 if (conf->bss[0]->macaddr_acl == DENY_UNLESS_ACCEPTED) { 1004 accept_acl = 1; 1005 err = hostapd_set_acl_list(hapd, conf->bss[0]->accept_mac, 1006 conf->bss[0]->num_accept_mac, 1007 accept_acl); 1008 if (err) { 1009 wpa_printf(MSG_DEBUG, "Failed to set accept acl"); 1010 return; 1011 } 1012 } else if (conf->bss[0]->macaddr_acl == ACCEPT_UNLESS_DENIED) { 1013 accept_acl = 0; 1014 err = hostapd_set_acl_list(hapd, conf->bss[0]->deny_mac, 1015 conf->bss[0]->num_deny_mac, 1016 accept_acl); 1017 if (err) { 1018 wpa_printf(MSG_DEBUG, "Failed to set deny acl"); 1019 return; 1020 } 1021 } 1022} 1023 1024 1025static int start_ctrl_iface_bss(struct hostapd_data *hapd) 1026{ 1027 if (!hapd->iface->interfaces || 1028 !hapd->iface->interfaces->ctrl_iface_init) 1029 return 0; 1030 1031 if (hapd->iface->interfaces->ctrl_iface_init(hapd)) { 1032 wpa_printf(MSG_ERROR, 1033 "Failed to setup control interface for %s", 1034 hapd->conf->iface); 1035 return -1; 1036 } 1037 1038 return 0; 1039} 1040 1041 1042static int start_ctrl_iface(struct hostapd_iface *iface) 1043{ 1044 size_t i; 1045 1046 if (!iface->interfaces || !iface->interfaces->ctrl_iface_init) 1047 return 0; 1048 1049 for (i = 0; i < iface->num_bss; i++) { 1050 struct hostapd_data *hapd = iface->bss[i]; 1051 if (iface->interfaces->ctrl_iface_init(hapd)) { 1052 wpa_printf(MSG_ERROR, 1053 "Failed to setup control interface for %s", 1054 hapd->conf->iface); 1055 return -1; 1056 } 1057 } 1058 1059 return 0; 1060} 1061 1062 1063static void channel_list_update_timeout(void *eloop_ctx, void *timeout_ctx) 1064{ 1065 struct hostapd_iface *iface = eloop_ctx; 1066 1067 if (!iface->wait_channel_update) { 1068 wpa_printf(MSG_INFO, "Channel list update timeout, but interface was not waiting for it"); 1069 return; 1070 } 1071 1072 /* 1073 * It is possible that the existing channel list is acceptable, so try 1074 * to proceed. 1075 */ 1076 wpa_printf(MSG_DEBUG, "Channel list update timeout - try to continue anyway"); 1077 setup_interface2(iface); 1078} 1079 1080 1081void hostapd_channel_list_updated(struct hostapd_iface *iface, int initiator) 1082{ 1083 if (!iface->wait_channel_update || initiator != REGDOM_SET_BY_USER) 1084 return; 1085 1086 wpa_printf(MSG_DEBUG, "Channel list updated - continue setup"); 1087 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL); 1088 setup_interface2(iface); 1089} 1090 1091 1092static int setup_interface(struct hostapd_iface *iface) 1093{ 1094 struct hostapd_data *hapd = iface->bss[0]; 1095 size_t i; 1096 1097 /* 1098 * It is possible that setup_interface() is called after the interface 1099 * was disabled etc., in which case driver_ap_teardown is possibly set 1100 * to 1. Clear it here so any other key/station deletion, which is not 1101 * part of a teardown flow, would also call the relevant driver 1102 * callbacks. 1103 */ 1104 iface->driver_ap_teardown = 0; 1105 1106 if (!iface->phy[0]) { 1107 const char *phy = hostapd_drv_get_radio_name(hapd); 1108 if (phy) { 1109 wpa_printf(MSG_DEBUG, "phy: %s", phy); 1110 os_strlcpy(iface->phy, phy, sizeof(iface->phy)); 1111 } 1112 } 1113 1114 /* 1115 * Make sure that all BSSes get configured with a pointer to the same 1116 * driver interface. 1117 */ 1118 for (i = 1; i < iface->num_bss; i++) { 1119 iface->bss[i]->driver = hapd->driver; 1120 iface->bss[i]->drv_priv = hapd->drv_priv; 1121 } 1122 1123 if (hostapd_validate_bssid_configuration(iface)) 1124 return -1; 1125 1126 /* 1127 * Initialize control interfaces early to allow external monitoring of 1128 * channel setup operations that may take considerable amount of time 1129 * especially for DFS cases. 1130 */ 1131 if (start_ctrl_iface(iface)) 1132 return -1; 1133 1134 if (hapd->iconf->country[0] && hapd->iconf->country[1]) { 1135 char country[4], previous_country[4]; 1136 1137 hostapd_set_state(iface, HAPD_IFACE_COUNTRY_UPDATE); 1138 if (hostapd_get_country(hapd, previous_country) < 0) 1139 previous_country[0] = '\0'; 1140 1141 os_memcpy(country, hapd->iconf->country, 3); 1142 country[3] = '\0'; 1143 if (hostapd_set_country(hapd, country) < 0) { 1144 wpa_printf(MSG_ERROR, "Failed to set country code"); 1145 return -1; 1146 } 1147 1148 wpa_printf(MSG_DEBUG, "Previous country code %s, new country code %s", 1149 previous_country, country); 1150 1151 if (os_strncmp(previous_country, country, 2) != 0) { 1152 wpa_printf(MSG_DEBUG, "Continue interface setup after channel list update"); 1153 iface->wait_channel_update = 1; 1154 eloop_register_timeout(5, 0, 1155 channel_list_update_timeout, 1156 iface, NULL); 1157 return 0; 1158 } 1159 } 1160 1161 return setup_interface2(iface); 1162} 1163 1164 1165static int setup_interface2(struct hostapd_iface *iface) 1166{ 1167 iface->wait_channel_update = 0; 1168 1169 if (hostapd_get_hw_features(iface)) { 1170 /* Not all drivers support this yet, so continue without hw 1171 * feature data. */ 1172 } else { 1173 int ret = hostapd_select_hw_mode(iface); 1174 if (ret < 0) { 1175 wpa_printf(MSG_ERROR, "Could not select hw_mode and " 1176 "channel. (%d)", ret); 1177 goto fail; 1178 } 1179 if (ret == 1) { 1180 wpa_printf(MSG_DEBUG, "Interface initialization will be completed in a callback (ACS)"); 1181 return 0; 1182 } 1183 ret = hostapd_check_ht_capab(iface); 1184 if (ret < 0) 1185 goto fail; 1186 if (ret == 1) { 1187 wpa_printf(MSG_DEBUG, "Interface initialization will " 1188 "be completed in a callback"); 1189 return 0; 1190 } 1191 1192 if (iface->conf->ieee80211h) 1193 wpa_printf(MSG_DEBUG, "DFS support is enabled"); 1194 } 1195 return hostapd_setup_interface_complete(iface, 0); 1196 1197fail: 1198 hostapd_set_state(iface, HAPD_IFACE_DISABLED); 1199 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED); 1200 if (iface->interfaces && iface->interfaces->terminate_on_error) 1201 eloop_terminate(); 1202 return -1; 1203} 1204 1205 1206/** 1207 * hostapd_setup_interface_complete - Complete interface setup 1208 * 1209 * This function is called when previous steps in the interface setup has been 1210 * completed. This can also start operations, e.g., DFS, that will require 1211 * additional processing before interface is ready to be enabled. Such 1212 * operations will call this function from eloop callbacks when finished. 1213 */ 1214int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err) 1215{ 1216 struct hostapd_data *hapd = iface->bss[0]; 1217 size_t j; 1218 u8 *prev_addr; 1219 int delay_apply_cfg = 0; 1220 1221 if (err) 1222 goto fail; 1223 1224 wpa_printf(MSG_DEBUG, "Completing interface initialization"); 1225 if (iface->conf->channel) { 1226#ifdef NEED_AP_MLME 1227 int res; 1228#endif /* NEED_AP_MLME */ 1229 1230 iface->freq = hostapd_hw_get_freq(hapd, iface->conf->channel); 1231 wpa_printf(MSG_DEBUG, "Mode: %s Channel: %d " 1232 "Frequency: %d MHz", 1233 hostapd_hw_mode_txt(iface->conf->hw_mode), 1234 iface->conf->channel, iface->freq); 1235 1236#ifdef NEED_AP_MLME 1237 /* Handle DFS only if it is not offloaded to the driver */ 1238 if (!(iface->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD)) { 1239 /* Check DFS */ 1240 res = hostapd_handle_dfs(iface); 1241 if (res <= 0) { 1242 if (res < 0) 1243 goto fail; 1244 return res; 1245 } 1246 } 1247#endif /* NEED_AP_MLME */ 1248 1249#ifdef CONFIG_MESH 1250 if (iface->mconf != NULL) { 1251 wpa_printf(MSG_DEBUG, 1252 "%s: Mesh configuration will be applied while joining the mesh network", 1253 iface->bss[0]->conf->iface); 1254 delay_apply_cfg = 1; 1255 } 1256#endif /* CONFIG_MESH */ 1257 1258 if (!delay_apply_cfg && 1259 hostapd_set_freq(hapd, hapd->iconf->hw_mode, iface->freq, 1260 hapd->iconf->channel, 1261 hapd->iconf->ieee80211n, 1262 hapd->iconf->ieee80211ac, 1263 hapd->iconf->secondary_channel, 1264 hapd->iconf->vht_oper_chwidth, 1265 hapd->iconf->vht_oper_centr_freq_seg0_idx, 1266 hapd->iconf->vht_oper_centr_freq_seg1_idx)) { 1267 wpa_printf(MSG_ERROR, "Could not set channel for " 1268 "kernel driver"); 1269 goto fail; 1270 } 1271 } 1272 1273 if (iface->current_mode) { 1274 if (hostapd_prepare_rates(iface, iface->current_mode)) { 1275 wpa_printf(MSG_ERROR, "Failed to prepare rates " 1276 "table."); 1277 hostapd_logger(hapd, NULL, HOSTAPD_MODULE_IEEE80211, 1278 HOSTAPD_LEVEL_WARNING, 1279 "Failed to prepare rates table."); 1280 goto fail; 1281 } 1282 } 1283 1284 if (hapd->iconf->rts_threshold > -1 && 1285 hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) { 1286 wpa_printf(MSG_ERROR, "Could not set RTS threshold for " 1287 "kernel driver"); 1288 goto fail; 1289 } 1290 1291 if (hapd->iconf->fragm_threshold > -1 && 1292 hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) { 1293 wpa_printf(MSG_ERROR, "Could not set fragmentation threshold " 1294 "for kernel driver"); 1295 goto fail; 1296 } 1297 1298 prev_addr = hapd->own_addr; 1299 1300 for (j = 0; j < iface->num_bss; j++) { 1301 hapd = iface->bss[j]; 1302 if (j) 1303 os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN); 1304 if (hostapd_setup_bss(hapd, j == 0)) { 1305 do { 1306 hapd = iface->bss[j]; 1307 hostapd_bss_deinit_no_free(hapd); 1308 hostapd_free_hapd_data(hapd); 1309 } while (j-- > 0); 1310 goto fail; 1311 } 1312 if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) 1313 prev_addr = hapd->own_addr; 1314 } 1315 hapd = iface->bss[0]; 1316 1317 hostapd_tx_queue_params(iface); 1318 1319 ap_list_init(iface); 1320 1321 hostapd_set_acl(hapd); 1322 1323 if (hostapd_driver_commit(hapd) < 0) { 1324 wpa_printf(MSG_ERROR, "%s: Failed to commit driver " 1325 "configuration", __func__); 1326 goto fail; 1327 } 1328 1329 /* 1330 * WPS UPnP module can be initialized only when the "upnp_iface" is up. 1331 * If "interface" and "upnp_iface" are the same (e.g., non-bridge 1332 * mode), the interface is up only after driver_commit, so initialize 1333 * WPS after driver_commit. 1334 */ 1335 for (j = 0; j < iface->num_bss; j++) { 1336 if (hostapd_init_wps_complete(iface->bss[j])) 1337 goto fail; 1338 } 1339 1340 hostapd_set_state(iface, HAPD_IFACE_ENABLED); 1341 wpa_msg(iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_ENABLED); 1342 if (hapd->setup_complete_cb) 1343 hapd->setup_complete_cb(hapd->setup_complete_cb_ctx); 1344 1345 wpa_printf(MSG_DEBUG, "%s: Setup of interface done.", 1346 iface->bss[0]->conf->iface); 1347 if (iface->interfaces && iface->interfaces->terminate_on_error > 0) 1348 iface->interfaces->terminate_on_error--; 1349 1350 return 0; 1351 1352fail: 1353 wpa_printf(MSG_ERROR, "Interface initialization failed"); 1354 hostapd_set_state(iface, HAPD_IFACE_DISABLED); 1355 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_EVENT_DISABLED); 1356 if (iface->interfaces && iface->interfaces->terminate_on_error) 1357 eloop_terminate(); 1358 return -1; 1359} 1360 1361 1362/** 1363 * hostapd_setup_interface - Setup of an interface 1364 * @iface: Pointer to interface data. 1365 * Returns: 0 on success, -1 on failure 1366 * 1367 * Initializes the driver interface, validates the configuration, 1368 * and sets driver parameters based on the configuration. 1369 * Flushes old stations, sets the channel, encryption, 1370 * beacons, and WDS links based on the configuration. 1371 * 1372 * If interface setup requires more time, e.g., to perform HT co-ex scans, ACS, 1373 * or DFS operations, this function returns 0 before such operations have been 1374 * completed. The pending operations are registered into eloop and will be 1375 * completed from eloop callbacks. Those callbacks end up calling 1376 * hostapd_setup_interface_complete() once setup has been completed. 1377 */ 1378int hostapd_setup_interface(struct hostapd_iface *iface) 1379{ 1380 int ret; 1381 1382 ret = setup_interface(iface); 1383 if (ret) { 1384 wpa_printf(MSG_ERROR, "%s: Unable to setup interface.", 1385 iface->bss[0]->conf->iface); 1386 return -1; 1387 } 1388 1389 return 0; 1390} 1391 1392 1393/** 1394 * hostapd_alloc_bss_data - Allocate and initialize per-BSS data 1395 * @hapd_iface: Pointer to interface data 1396 * @conf: Pointer to per-interface configuration 1397 * @bss: Pointer to per-BSS configuration for this BSS 1398 * Returns: Pointer to allocated BSS data 1399 * 1400 * This function is used to allocate per-BSS data structure. This data will be 1401 * freed after hostapd_cleanup() is called for it during interface 1402 * deinitialization. 1403 */ 1404struct hostapd_data * 1405hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface, 1406 struct hostapd_config *conf, 1407 struct hostapd_bss_config *bss) 1408{ 1409 struct hostapd_data *hapd; 1410 1411 hapd = os_zalloc(sizeof(*hapd)); 1412 if (hapd == NULL) 1413 return NULL; 1414 1415 hapd->new_assoc_sta_cb = hostapd_new_assoc_sta; 1416 hapd->iconf = conf; 1417 hapd->conf = bss; 1418 hapd->iface = hapd_iface; 1419 hapd->driver = hapd->iconf->driver; 1420 hapd->ctrl_sock = -1; 1421 1422 return hapd; 1423} 1424 1425 1426static void hostapd_bss_deinit(struct hostapd_data *hapd) 1427{ 1428 wpa_printf(MSG_DEBUG, "%s: deinit bss %s", __func__, 1429 hapd->conf->iface); 1430 hostapd_bss_deinit_no_free(hapd); 1431 hostapd_cleanup(hapd); 1432} 1433 1434 1435void hostapd_interface_deinit(struct hostapd_iface *iface) 1436{ 1437 int j; 1438 1439 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 1440 if (iface == NULL) 1441 return; 1442 1443#ifdef CONFIG_IEEE80211N 1444#ifdef NEED_AP_MLME 1445 hostapd_stop_setup_timers(iface); 1446 eloop_cancel_timeout(ap_ht2040_timeout, iface, NULL); 1447#endif /* NEED_AP_MLME */ 1448#endif /* CONFIG_IEEE80211N */ 1449 eloop_cancel_timeout(channel_list_update_timeout, iface, NULL); 1450 iface->wait_channel_update = 0; 1451 1452 for (j = iface->num_bss - 1; j >= 0; j--) 1453 hostapd_bss_deinit(iface->bss[j]); 1454} 1455 1456 1457void hostapd_interface_free(struct hostapd_iface *iface) 1458{ 1459 size_t j; 1460 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 1461 for (j = 0; j < iface->num_bss; j++) { 1462 wpa_printf(MSG_DEBUG, "%s: free hapd %p", 1463 __func__, iface->bss[j]); 1464 os_free(iface->bss[j]); 1465 } 1466 hostapd_cleanup_iface(iface); 1467} 1468 1469 1470/** 1471 * hostapd_init - Allocate and initialize per-interface data 1472 * @config_file: Path to the configuration file 1473 * Returns: Pointer to the allocated interface data or %NULL on failure 1474 * 1475 * This function is used to allocate main data structures for per-interface 1476 * data. The allocated data buffer will be freed by calling 1477 * hostapd_cleanup_iface(). 1478 */ 1479struct hostapd_iface * hostapd_init(struct hapd_interfaces *interfaces, 1480 const char *config_file) 1481{ 1482 struct hostapd_iface *hapd_iface = NULL; 1483 struct hostapd_config *conf = NULL; 1484 struct hostapd_data *hapd; 1485 size_t i; 1486 1487 hapd_iface = os_zalloc(sizeof(*hapd_iface)); 1488 if (hapd_iface == NULL) 1489 goto fail; 1490 1491 hapd_iface->config_fname = os_strdup(config_file); 1492 if (hapd_iface->config_fname == NULL) 1493 goto fail; 1494 1495 conf = interfaces->config_read_cb(hapd_iface->config_fname); 1496 if (conf == NULL) 1497 goto fail; 1498 hapd_iface->conf = conf; 1499 1500 hapd_iface->num_bss = conf->num_bss; 1501 hapd_iface->bss = os_calloc(conf->num_bss, 1502 sizeof(struct hostapd_data *)); 1503 if (hapd_iface->bss == NULL) 1504 goto fail; 1505 1506 for (i = 0; i < conf->num_bss; i++) { 1507 hapd = hapd_iface->bss[i] = 1508 hostapd_alloc_bss_data(hapd_iface, conf, 1509 conf->bss[i]); 1510 if (hapd == NULL) 1511 goto fail; 1512 hapd->msg_ctx = hapd; 1513 } 1514 1515 return hapd_iface; 1516 1517fail: 1518 wpa_printf(MSG_ERROR, "Failed to set up interface with %s", 1519 config_file); 1520 if (conf) 1521 hostapd_config_free(conf); 1522 if (hapd_iface) { 1523 os_free(hapd_iface->config_fname); 1524 os_free(hapd_iface->bss); 1525 wpa_printf(MSG_DEBUG, "%s: free iface %p", 1526 __func__, hapd_iface); 1527 os_free(hapd_iface); 1528 } 1529 return NULL; 1530} 1531 1532 1533static int ifname_in_use(struct hapd_interfaces *interfaces, const char *ifname) 1534{ 1535 size_t i, j; 1536 1537 for (i = 0; i < interfaces->count; i++) { 1538 struct hostapd_iface *iface = interfaces->iface[i]; 1539 for (j = 0; j < iface->num_bss; j++) { 1540 struct hostapd_data *hapd = iface->bss[j]; 1541 if (os_strcmp(ifname, hapd->conf->iface) == 0) 1542 return 1; 1543 } 1544 } 1545 1546 return 0; 1547} 1548 1549 1550/** 1551 * hostapd_interface_init_bss - Read configuration file and init BSS data 1552 * 1553 * This function is used to parse configuration file for a BSS. This BSS is 1554 * added to an existing interface sharing the same radio (if any) or a new 1555 * interface is created if this is the first interface on a radio. This 1556 * allocate memory for the BSS. No actual driver operations are started. 1557 * 1558 * This is similar to hostapd_interface_init(), but for a case where the 1559 * configuration is used to add a single BSS instead of all BSSes for a radio. 1560 */ 1561struct hostapd_iface * 1562hostapd_interface_init_bss(struct hapd_interfaces *interfaces, const char *phy, 1563 const char *config_fname, int debug) 1564{ 1565 struct hostapd_iface *new_iface = NULL, *iface = NULL; 1566 struct hostapd_data *hapd; 1567 int k; 1568 size_t i, bss_idx; 1569 1570 if (!phy || !*phy) 1571 return NULL; 1572 1573 for (i = 0; i < interfaces->count; i++) { 1574 if (os_strcmp(interfaces->iface[i]->phy, phy) == 0) { 1575 iface = interfaces->iface[i]; 1576 break; 1577 } 1578 } 1579 1580 wpa_printf(MSG_INFO, "Configuration file: %s (phy %s)%s", 1581 config_fname, phy, iface ? "" : " --> new PHY"); 1582 if (iface) { 1583 struct hostapd_config *conf; 1584 struct hostapd_bss_config **tmp_conf; 1585 struct hostapd_data **tmp_bss; 1586 struct hostapd_bss_config *bss; 1587 const char *ifname; 1588 1589 /* Add new BSS to existing iface */ 1590 conf = interfaces->config_read_cb(config_fname); 1591 if (conf == NULL) 1592 return NULL; 1593 if (conf->num_bss > 1) { 1594 wpa_printf(MSG_ERROR, "Multiple BSSes specified in BSS-config"); 1595 hostapd_config_free(conf); 1596 return NULL; 1597 } 1598 1599 ifname = conf->bss[0]->iface; 1600 if (ifname[0] != '\0' && ifname_in_use(interfaces, ifname)) { 1601 wpa_printf(MSG_ERROR, 1602 "Interface name %s already in use", ifname); 1603 hostapd_config_free(conf); 1604 return NULL; 1605 } 1606 1607 tmp_conf = os_realloc_array( 1608 iface->conf->bss, iface->conf->num_bss + 1, 1609 sizeof(struct hostapd_bss_config *)); 1610 tmp_bss = os_realloc_array(iface->bss, iface->num_bss + 1, 1611 sizeof(struct hostapd_data *)); 1612 if (tmp_bss) 1613 iface->bss = tmp_bss; 1614 if (tmp_conf) { 1615 iface->conf->bss = tmp_conf; 1616 iface->conf->last_bss = tmp_conf[0]; 1617 } 1618 if (tmp_bss == NULL || tmp_conf == NULL) { 1619 hostapd_config_free(conf); 1620 return NULL; 1621 } 1622 bss = iface->conf->bss[iface->conf->num_bss] = conf->bss[0]; 1623 iface->conf->num_bss++; 1624 1625 hapd = hostapd_alloc_bss_data(iface, iface->conf, bss); 1626 if (hapd == NULL) { 1627 iface->conf->num_bss--; 1628 hostapd_config_free(conf); 1629 return NULL; 1630 } 1631 iface->conf->last_bss = bss; 1632 iface->bss[iface->num_bss] = hapd; 1633 hapd->msg_ctx = hapd; 1634 1635 bss_idx = iface->num_bss++; 1636 conf->num_bss--; 1637 conf->bss[0] = NULL; 1638 hostapd_config_free(conf); 1639 } else { 1640 /* Add a new iface with the first BSS */ 1641 new_iface = iface = hostapd_init(interfaces, config_fname); 1642 if (!iface) 1643 return NULL; 1644 os_strlcpy(iface->phy, phy, sizeof(iface->phy)); 1645 iface->interfaces = interfaces; 1646 bss_idx = 0; 1647 } 1648 1649 for (k = 0; k < debug; k++) { 1650 if (iface->bss[bss_idx]->conf->logger_stdout_level > 0) 1651 iface->bss[bss_idx]->conf->logger_stdout_level--; 1652 } 1653 1654 if (iface->conf->bss[bss_idx]->iface[0] == '\0' && 1655 !hostapd_drv_none(iface->bss[bss_idx])) { 1656 wpa_printf(MSG_ERROR, "Interface name not specified in %s", 1657 config_fname); 1658 if (new_iface) 1659 hostapd_interface_deinit_free(new_iface); 1660 return NULL; 1661 } 1662 1663 return iface; 1664} 1665 1666 1667void hostapd_interface_deinit_free(struct hostapd_iface *iface) 1668{ 1669 const struct wpa_driver_ops *driver; 1670 void *drv_priv; 1671 1672 wpa_printf(MSG_DEBUG, "%s(%p)", __func__, iface); 1673 if (iface == NULL) 1674 return; 1675 wpa_printf(MSG_DEBUG, "%s: num_bss=%u conf->num_bss=%u", 1676 __func__, (unsigned int) iface->num_bss, 1677 (unsigned int) iface->conf->num_bss); 1678 driver = iface->bss[0]->driver; 1679 drv_priv = iface->bss[0]->drv_priv; 1680 hostapd_interface_deinit(iface); 1681 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit", 1682 __func__, driver, drv_priv); 1683 if (driver && driver->hapd_deinit && drv_priv) { 1684 driver->hapd_deinit(drv_priv); 1685 iface->bss[0]->drv_priv = NULL; 1686 } 1687 hostapd_interface_free(iface); 1688} 1689 1690 1691static void hostapd_deinit_driver(const struct wpa_driver_ops *driver, 1692 void *drv_priv, 1693 struct hostapd_iface *hapd_iface) 1694{ 1695 size_t j; 1696 1697 wpa_printf(MSG_DEBUG, "%s: driver=%p drv_priv=%p -> hapd_deinit", 1698 __func__, driver, drv_priv); 1699 if (driver && driver->hapd_deinit && drv_priv) { 1700 driver->hapd_deinit(drv_priv); 1701 for (j = 0; j < hapd_iface->num_bss; j++) { 1702 wpa_printf(MSG_DEBUG, "%s:bss[%d]->drv_priv=%p", 1703 __func__, (int) j, 1704 hapd_iface->bss[j]->drv_priv); 1705 if (hapd_iface->bss[j]->drv_priv == drv_priv) 1706 hapd_iface->bss[j]->drv_priv = NULL; 1707 } 1708 } 1709} 1710 1711 1712int hostapd_enable_iface(struct hostapd_iface *hapd_iface) 1713{ 1714 size_t j; 1715 1716 if (hapd_iface->bss[0]->drv_priv != NULL) { 1717 wpa_printf(MSG_ERROR, "Interface %s already enabled", 1718 hapd_iface->conf->bss[0]->iface); 1719 return -1; 1720 } 1721 1722 wpa_printf(MSG_DEBUG, "Enable interface %s", 1723 hapd_iface->conf->bss[0]->iface); 1724 1725 for (j = 0; j < hapd_iface->num_bss; j++) 1726 hostapd_set_security_params(hapd_iface->conf->bss[j], 1); 1727 if (hostapd_config_check(hapd_iface->conf, 1) < 0) { 1728 wpa_printf(MSG_INFO, "Invalid configuration - cannot enable"); 1729 return -1; 1730 } 1731 1732 if (hapd_iface->interfaces == NULL || 1733 hapd_iface->interfaces->driver_init == NULL || 1734 hapd_iface->interfaces->driver_init(hapd_iface)) 1735 return -1; 1736 1737 if (hostapd_setup_interface(hapd_iface)) { 1738 hostapd_deinit_driver(hapd_iface->bss[0]->driver, 1739 hapd_iface->bss[0]->drv_priv, 1740 hapd_iface); 1741 return -1; 1742 } 1743 1744 return 0; 1745} 1746 1747 1748int hostapd_reload_iface(struct hostapd_iface *hapd_iface) 1749{ 1750 size_t j; 1751 1752 wpa_printf(MSG_DEBUG, "Reload interface %s", 1753 hapd_iface->conf->bss[0]->iface); 1754 for (j = 0; j < hapd_iface->num_bss; j++) 1755 hostapd_set_security_params(hapd_iface->conf->bss[j], 1); 1756 if (hostapd_config_check(hapd_iface->conf, 1) < 0) { 1757 wpa_printf(MSG_ERROR, "Updated configuration is invalid"); 1758 return -1; 1759 } 1760 hostapd_clear_old(hapd_iface); 1761 for (j = 0; j < hapd_iface->num_bss; j++) 1762 hostapd_reload_bss(hapd_iface->bss[j]); 1763 1764 return 0; 1765} 1766 1767 1768int hostapd_disable_iface(struct hostapd_iface *hapd_iface) 1769{ 1770 size_t j; 1771 const struct wpa_driver_ops *driver; 1772 void *drv_priv; 1773 1774 if (hapd_iface == NULL) 1775 return -1; 1776 1777 if (hapd_iface->bss[0]->drv_priv == NULL) { 1778 wpa_printf(MSG_INFO, "Interface %s already disabled", 1779 hapd_iface->conf->bss[0]->iface); 1780 return -1; 1781 } 1782 1783 wpa_msg(hapd_iface->bss[0]->msg_ctx, MSG_INFO, AP_EVENT_DISABLED); 1784 driver = hapd_iface->bss[0]->driver; 1785 drv_priv = hapd_iface->bss[0]->drv_priv; 1786 1787 hapd_iface->driver_ap_teardown = 1788 !!(hapd_iface->drv_flags & 1789 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT); 1790 1791 /* same as hostapd_interface_deinit without deinitializing ctrl-iface */ 1792 for (j = 0; j < hapd_iface->num_bss; j++) { 1793 struct hostapd_data *hapd = hapd_iface->bss[j]; 1794 hostapd_bss_deinit_no_free(hapd); 1795 hostapd_free_hapd_data(hapd); 1796 } 1797 1798 hostapd_deinit_driver(driver, drv_priv, hapd_iface); 1799 1800 /* From hostapd_cleanup_iface: These were initialized in 1801 * hostapd_setup_interface and hostapd_setup_interface_complete 1802 */ 1803 hostapd_cleanup_iface_partial(hapd_iface); 1804 1805 wpa_printf(MSG_DEBUG, "Interface %s disabled", 1806 hapd_iface->bss[0]->conf->iface); 1807 hostapd_set_state(hapd_iface, HAPD_IFACE_DISABLED); 1808 return 0; 1809} 1810 1811 1812static struct hostapd_iface * 1813hostapd_iface_alloc(struct hapd_interfaces *interfaces) 1814{ 1815 struct hostapd_iface **iface, *hapd_iface; 1816 1817 iface = os_realloc_array(interfaces->iface, interfaces->count + 1, 1818 sizeof(struct hostapd_iface *)); 1819 if (iface == NULL) 1820 return NULL; 1821 interfaces->iface = iface; 1822 hapd_iface = interfaces->iface[interfaces->count] = 1823 os_zalloc(sizeof(*hapd_iface)); 1824 if (hapd_iface == NULL) { 1825 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for " 1826 "the interface", __func__); 1827 return NULL; 1828 } 1829 interfaces->count++; 1830 hapd_iface->interfaces = interfaces; 1831 1832 return hapd_iface; 1833} 1834 1835 1836static struct hostapd_config * 1837hostapd_config_alloc(struct hapd_interfaces *interfaces, const char *ifname, 1838 const char *ctrl_iface) 1839{ 1840 struct hostapd_bss_config *bss; 1841 struct hostapd_config *conf; 1842 1843 /* Allocates memory for bss and conf */ 1844 conf = hostapd_config_defaults(); 1845 if (conf == NULL) { 1846 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory for " 1847 "configuration", __func__); 1848 return NULL; 1849 } 1850 1851 conf->driver = wpa_drivers[0]; 1852 if (conf->driver == NULL) { 1853 wpa_printf(MSG_ERROR, "No driver wrappers registered!"); 1854 hostapd_config_free(conf); 1855 return NULL; 1856 } 1857 1858 bss = conf->last_bss = conf->bss[0]; 1859 1860 os_strlcpy(bss->iface, ifname, sizeof(bss->iface)); 1861 bss->ctrl_interface = os_strdup(ctrl_iface); 1862 if (bss->ctrl_interface == NULL) { 1863 hostapd_config_free(conf); 1864 return NULL; 1865 } 1866 1867 /* Reading configuration file skipped, will be done in SET! 1868 * From reading the configuration till the end has to be done in 1869 * SET 1870 */ 1871 return conf; 1872} 1873 1874 1875static struct hostapd_iface * hostapd_data_alloc( 1876 struct hapd_interfaces *interfaces, struct hostapd_config *conf) 1877{ 1878 size_t i; 1879 struct hostapd_iface *hapd_iface = 1880 interfaces->iface[interfaces->count - 1]; 1881 struct hostapd_data *hapd; 1882 1883 hapd_iface->conf = conf; 1884 hapd_iface->num_bss = conf->num_bss; 1885 1886 hapd_iface->bss = os_calloc(conf->num_bss, 1887 sizeof(struct hostapd_data *)); 1888 if (hapd_iface->bss == NULL) 1889 return NULL; 1890 1891 for (i = 0; i < conf->num_bss; i++) { 1892 hapd = hapd_iface->bss[i] = 1893 hostapd_alloc_bss_data(hapd_iface, conf, conf->bss[i]); 1894 if (hapd == NULL) 1895 return NULL; 1896 hapd->msg_ctx = hapd; 1897 } 1898 1899 hapd_iface->interfaces = interfaces; 1900 1901 return hapd_iface; 1902} 1903 1904 1905int hostapd_add_iface(struct hapd_interfaces *interfaces, char *buf) 1906{ 1907 struct hostapd_config *conf = NULL; 1908 struct hostapd_iface *hapd_iface = NULL, *new_iface = NULL; 1909 struct hostapd_data *hapd; 1910 char *ptr; 1911 size_t i, j; 1912 const char *conf_file = NULL, *phy_name = NULL; 1913 1914 if (os_strncmp(buf, "bss_config=", 11) == 0) { 1915 char *pos; 1916 phy_name = buf + 11; 1917 pos = os_strchr(phy_name, ':'); 1918 if (!pos) 1919 return -1; 1920 *pos++ = '\0'; 1921 conf_file = pos; 1922 if (!os_strlen(conf_file)) 1923 return -1; 1924 1925 hapd_iface = hostapd_interface_init_bss(interfaces, phy_name, 1926 conf_file, 0); 1927 if (!hapd_iface) 1928 return -1; 1929 for (j = 0; j < interfaces->count; j++) { 1930 if (interfaces->iface[j] == hapd_iface) 1931 break; 1932 } 1933 if (j == interfaces->count) { 1934 struct hostapd_iface **tmp; 1935 tmp = os_realloc_array(interfaces->iface, 1936 interfaces->count + 1, 1937 sizeof(struct hostapd_iface *)); 1938 if (!tmp) { 1939 hostapd_interface_deinit_free(hapd_iface); 1940 return -1; 1941 } 1942 interfaces->iface = tmp; 1943 interfaces->iface[interfaces->count++] = hapd_iface; 1944 new_iface = hapd_iface; 1945 } 1946 1947 if (new_iface) { 1948 if (interfaces->driver_init(hapd_iface)) { 1949 interfaces->count--; 1950 goto fail; 1951 } 1952 1953 if (hostapd_setup_interface(hapd_iface)) { 1954 interfaces->count--; 1955 hostapd_deinit_driver( 1956 hapd_iface->bss[0]->driver, 1957 hapd_iface->bss[0]->drv_priv, 1958 hapd_iface); 1959 goto fail; 1960 } 1961 } else { 1962 /* Assign new BSS with bss[0]'s driver info */ 1963 hapd = hapd_iface->bss[hapd_iface->num_bss - 1]; 1964 hapd->driver = hapd_iface->bss[0]->driver; 1965 hapd->drv_priv = hapd_iface->bss[0]->drv_priv; 1966 os_memcpy(hapd->own_addr, hapd_iface->bss[0]->own_addr, 1967 ETH_ALEN); 1968 1969 if (start_ctrl_iface_bss(hapd) < 0 || 1970 (hapd_iface->state == HAPD_IFACE_ENABLED && 1971 hostapd_setup_bss(hapd, -1))) { 1972 hostapd_cleanup(hapd); 1973 hapd_iface->bss[hapd_iface->num_bss - 1] = NULL; 1974 hapd_iface->conf->num_bss--; 1975 hapd_iface->num_bss--; 1976 wpa_printf(MSG_DEBUG, "%s: free hapd %p %s", 1977 __func__, hapd, hapd->conf->iface); 1978 os_free(hapd); 1979 return -1; 1980 } 1981 } 1982 return 0; 1983 } 1984 1985 ptr = os_strchr(buf, ' '); 1986 if (ptr == NULL) 1987 return -1; 1988 *ptr++ = '\0'; 1989 1990 if (os_strncmp(ptr, "config=", 7) == 0) 1991 conf_file = ptr + 7; 1992 1993 for (i = 0; i < interfaces->count; i++) { 1994 if (!os_strcmp(interfaces->iface[i]->conf->bss[0]->iface, 1995 buf)) { 1996 wpa_printf(MSG_INFO, "Cannot add interface - it " 1997 "already exists"); 1998 return -1; 1999 } 2000 } 2001 2002 hapd_iface = hostapd_iface_alloc(interfaces); 2003 if (hapd_iface == NULL) { 2004 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory " 2005 "for interface", __func__); 2006 goto fail; 2007 } 2008 2009 if (conf_file && interfaces->config_read_cb) { 2010 conf = interfaces->config_read_cb(conf_file); 2011 if (conf && conf->bss) 2012 os_strlcpy(conf->bss[0]->iface, buf, 2013 sizeof(conf->bss[0]->iface)); 2014 } else 2015 conf = hostapd_config_alloc(interfaces, buf, ptr); 2016 if (conf == NULL || conf->bss == NULL) { 2017 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory " 2018 "for configuration", __func__); 2019 goto fail; 2020 } 2021 2022 hapd_iface = hostapd_data_alloc(interfaces, conf); 2023 if (hapd_iface == NULL) { 2024 wpa_printf(MSG_ERROR, "%s: Failed to allocate memory " 2025 "for hostapd", __func__); 2026 goto fail; 2027 } 2028 2029 if (start_ctrl_iface(hapd_iface) < 0) 2030 goto fail; 2031 2032 wpa_printf(MSG_INFO, "Add interface '%s'", conf->bss[0]->iface); 2033 2034 return 0; 2035 2036fail: 2037 if (conf) 2038 hostapd_config_free(conf); 2039 if (hapd_iface) { 2040 if (hapd_iface->bss) { 2041 for (i = 0; i < hapd_iface->num_bss; i++) { 2042 hapd = hapd_iface->bss[i]; 2043 if (!hapd) 2044 continue; 2045 if (hapd_iface->interfaces && 2046 hapd_iface->interfaces->ctrl_iface_deinit) 2047 hapd_iface->interfaces-> 2048 ctrl_iface_deinit(hapd); 2049 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)", 2050 __func__, hapd_iface->bss[i], 2051 hapd->conf->iface); 2052 hostapd_cleanup(hapd); 2053 os_free(hapd); 2054 hapd_iface->bss[i] = NULL; 2055 } 2056 os_free(hapd_iface->bss); 2057 hapd_iface->bss = NULL; 2058 } 2059 hostapd_cleanup_iface(hapd_iface); 2060 } 2061 return -1; 2062} 2063 2064 2065static int hostapd_remove_bss(struct hostapd_iface *iface, unsigned int idx) 2066{ 2067 size_t i; 2068 2069 wpa_printf(MSG_INFO, "Remove BSS '%s'", iface->conf->bss[idx]->iface); 2070 2071 /* Remove hostapd_data only if it has already been initialized */ 2072 if (idx < iface->num_bss) { 2073 struct hostapd_data *hapd = iface->bss[idx]; 2074 2075 hostapd_bss_deinit(hapd); 2076 wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)", 2077 __func__, hapd, hapd->conf->iface); 2078 hostapd_config_free_bss(hapd->conf); 2079 os_free(hapd); 2080 2081 iface->num_bss--; 2082 2083 for (i = idx; i < iface->num_bss; i++) 2084 iface->bss[i] = iface->bss[i + 1]; 2085 } else { 2086 hostapd_config_free_bss(iface->conf->bss[idx]); 2087 iface->conf->bss[idx] = NULL; 2088 } 2089 2090 iface->conf->num_bss--; 2091 for (i = idx; i < iface->conf->num_bss; i++) 2092 iface->conf->bss[i] = iface->conf->bss[i + 1]; 2093 2094 return 0; 2095} 2096 2097 2098int hostapd_remove_iface(struct hapd_interfaces *interfaces, char *buf) 2099{ 2100 struct hostapd_iface *hapd_iface; 2101 size_t i, j, k = 0; 2102 2103 for (i = 0; i < interfaces->count; i++) { 2104 hapd_iface = interfaces->iface[i]; 2105 if (hapd_iface == NULL) 2106 return -1; 2107 if (!os_strcmp(hapd_iface->conf->bss[0]->iface, buf)) { 2108 wpa_printf(MSG_INFO, "Remove interface '%s'", buf); 2109 hapd_iface->driver_ap_teardown = 2110 !!(hapd_iface->drv_flags & 2111 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT); 2112 2113 hostapd_interface_deinit_free(hapd_iface); 2114 k = i; 2115 while (k < (interfaces->count - 1)) { 2116 interfaces->iface[k] = 2117 interfaces->iface[k + 1]; 2118 k++; 2119 } 2120 interfaces->count--; 2121 return 0; 2122 } 2123 2124 for (j = 0; j < hapd_iface->conf->num_bss; j++) { 2125 if (!os_strcmp(hapd_iface->conf->bss[j]->iface, buf)) { 2126 hapd_iface->driver_ap_teardown = 2127 !(hapd_iface->drv_flags & 2128 WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT); 2129 return hostapd_remove_bss(hapd_iface, j); 2130 } 2131 } 2132 } 2133 return -1; 2134} 2135 2136 2137/** 2138 * hostapd_new_assoc_sta - Notify that a new station associated with the AP 2139 * @hapd: Pointer to BSS data 2140 * @sta: Pointer to the associated STA data 2141 * @reassoc: 1 to indicate this was a re-association; 0 = first association 2142 * 2143 * This function will be called whenever a station associates with the AP. It 2144 * can be called from ieee802_11.c for drivers that export MLME to hostapd and 2145 * from drv_callbacks.c based on driver events for drivers that take care of 2146 * management frames (IEEE 802.11 authentication and association) internally. 2147 */ 2148void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta, 2149 int reassoc) 2150{ 2151 if (hapd->tkip_countermeasures) { 2152 hostapd_drv_sta_deauth(hapd, sta->addr, 2153 WLAN_REASON_MICHAEL_MIC_FAILURE); 2154 return; 2155 } 2156 2157 hostapd_prune_associations(hapd, sta->addr); 2158 2159 /* IEEE 802.11F (IAPP) */ 2160 if (hapd->conf->ieee802_11f) 2161 iapp_new_station(hapd->iapp, sta); 2162 2163#ifdef CONFIG_P2P 2164 if (sta->p2p_ie == NULL && !sta->no_p2p_set) { 2165 sta->no_p2p_set = 1; 2166 hapd->num_sta_no_p2p++; 2167 if (hapd->num_sta_no_p2p == 1) 2168 hostapd_p2p_non_p2p_sta_connected(hapd); 2169 } 2170#endif /* CONFIG_P2P */ 2171 2172 /* Start accounting here, if IEEE 802.1X and WPA are not used. 2173 * IEEE 802.1X/WPA code will start accounting after the station has 2174 * been authorized. */ 2175 if (!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) { 2176 ap_sta_set_authorized(hapd, sta, 1); 2177 os_get_reltime(&sta->connected_time); 2178 accounting_sta_start(hapd, sta); 2179 } 2180 2181 /* Start IEEE 802.1X authentication process for new stations */ 2182 ieee802_1x_new_station(hapd, sta); 2183 if (reassoc) { 2184 if (sta->auth_alg != WLAN_AUTH_FT && 2185 !(sta->flags & (WLAN_STA_WPS | WLAN_STA_MAYBE_WPS))) 2186 wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH); 2187 } else 2188 wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm); 2189 2190 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) { 2191 wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout " 2192 "for " MACSTR " (%d seconds - ap_max_inactivity)", 2193 __func__, MAC2STR(sta->addr), 2194 hapd->conf->ap_max_inactivity); 2195 eloop_cancel_timeout(ap_handle_timer, hapd, sta); 2196 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0, 2197 ap_handle_timer, hapd, sta); 2198 } 2199} 2200 2201 2202const char * hostapd_state_text(enum hostapd_iface_state s) 2203{ 2204 switch (s) { 2205 case HAPD_IFACE_UNINITIALIZED: 2206 return "UNINITIALIZED"; 2207 case HAPD_IFACE_DISABLED: 2208 return "DISABLED"; 2209 case HAPD_IFACE_COUNTRY_UPDATE: 2210 return "COUNTRY_UPDATE"; 2211 case HAPD_IFACE_ACS: 2212 return "ACS"; 2213 case HAPD_IFACE_HT_SCAN: 2214 return "HT_SCAN"; 2215 case HAPD_IFACE_DFS: 2216 return "DFS"; 2217 case HAPD_IFACE_ENABLED: 2218 return "ENABLED"; 2219 } 2220 2221 return "UNKNOWN"; 2222} 2223 2224 2225void hostapd_set_state(struct hostapd_iface *iface, enum hostapd_iface_state s) 2226{ 2227 wpa_printf(MSG_INFO, "%s: interface state %s->%s", 2228 iface->conf->bss[0]->iface, hostapd_state_text(iface->state), 2229 hostapd_state_text(s)); 2230 iface->state = s; 2231} 2232 2233 2234#ifdef NEED_AP_MLME 2235 2236static void free_beacon_data(struct beacon_data *beacon) 2237{ 2238 os_free(beacon->head); 2239 beacon->head = NULL; 2240 os_free(beacon->tail); 2241 beacon->tail = NULL; 2242 os_free(beacon->probe_resp); 2243 beacon->probe_resp = NULL; 2244 os_free(beacon->beacon_ies); 2245 beacon->beacon_ies = NULL; 2246 os_free(beacon->proberesp_ies); 2247 beacon->proberesp_ies = NULL; 2248 os_free(beacon->assocresp_ies); 2249 beacon->assocresp_ies = NULL; 2250} 2251 2252 2253static int hostapd_build_beacon_data(struct hostapd_data *hapd, 2254 struct beacon_data *beacon) 2255{ 2256 struct wpabuf *beacon_extra, *proberesp_extra, *assocresp_extra; 2257 struct wpa_driver_ap_params params; 2258 int ret; 2259 2260 os_memset(beacon, 0, sizeof(*beacon)); 2261 ret = ieee802_11_build_ap_params(hapd, ¶ms); 2262 if (ret < 0) 2263 return ret; 2264 2265 ret = hostapd_build_ap_extra_ies(hapd, &beacon_extra, 2266 &proberesp_extra, 2267 &assocresp_extra); 2268 if (ret) 2269 goto free_ap_params; 2270 2271 ret = -1; 2272 beacon->head = os_malloc(params.head_len); 2273 if (!beacon->head) 2274 goto free_ap_extra_ies; 2275 2276 os_memcpy(beacon->head, params.head, params.head_len); 2277 beacon->head_len = params.head_len; 2278 2279 beacon->tail = os_malloc(params.tail_len); 2280 if (!beacon->tail) 2281 goto free_beacon; 2282 2283 os_memcpy(beacon->tail, params.tail, params.tail_len); 2284 beacon->tail_len = params.tail_len; 2285 2286 if (params.proberesp != NULL) { 2287 beacon->probe_resp = os_malloc(params.proberesp_len); 2288 if (!beacon->probe_resp) 2289 goto free_beacon; 2290 2291 os_memcpy(beacon->probe_resp, params.proberesp, 2292 params.proberesp_len); 2293 beacon->probe_resp_len = params.proberesp_len; 2294 } 2295 2296 /* copy the extra ies */ 2297 if (beacon_extra) { 2298 beacon->beacon_ies = os_malloc(wpabuf_len(beacon_extra)); 2299 if (!beacon->beacon_ies) 2300 goto free_beacon; 2301 2302 os_memcpy(beacon->beacon_ies, 2303 beacon_extra->buf, wpabuf_len(beacon_extra)); 2304 beacon->beacon_ies_len = wpabuf_len(beacon_extra); 2305 } 2306 2307 if (proberesp_extra) { 2308 beacon->proberesp_ies = 2309 os_malloc(wpabuf_len(proberesp_extra)); 2310 if (!beacon->proberesp_ies) 2311 goto free_beacon; 2312 2313 os_memcpy(beacon->proberesp_ies, proberesp_extra->buf, 2314 wpabuf_len(proberesp_extra)); 2315 beacon->proberesp_ies_len = wpabuf_len(proberesp_extra); 2316 } 2317 2318 if (assocresp_extra) { 2319 beacon->assocresp_ies = 2320 os_malloc(wpabuf_len(assocresp_extra)); 2321 if (!beacon->assocresp_ies) 2322 goto free_beacon; 2323 2324 os_memcpy(beacon->assocresp_ies, assocresp_extra->buf, 2325 wpabuf_len(assocresp_extra)); 2326 beacon->assocresp_ies_len = wpabuf_len(assocresp_extra); 2327 } 2328 2329 ret = 0; 2330free_beacon: 2331 /* if the function fails, the caller should not free beacon data */ 2332 if (ret) 2333 free_beacon_data(beacon); 2334 2335free_ap_extra_ies: 2336 hostapd_free_ap_extra_ies(hapd, beacon_extra, proberesp_extra, 2337 assocresp_extra); 2338free_ap_params: 2339 ieee802_11_free_ap_params(¶ms); 2340 return ret; 2341} 2342 2343 2344/* 2345 * TODO: This flow currently supports only changing frequency within the 2346 * same hw_mode. Any other changes to MAC parameters or provided settings (even 2347 * width) are not supported. 2348 */ 2349static int hostapd_change_config_freq(struct hostapd_data *hapd, 2350 struct hostapd_config *conf, 2351 struct hostapd_freq_params *params, 2352 struct hostapd_freq_params *old_params) 2353{ 2354 int channel; 2355 2356 if (!params->channel) { 2357 /* check if the new channel is supported by hw */ 2358 params->channel = hostapd_hw_get_channel(hapd, params->freq); 2359 } 2360 2361 channel = params->channel; 2362 if (!channel) 2363 return -1; 2364 2365 /* if a pointer to old_params is provided we save previous state */ 2366 if (old_params) { 2367 old_params->channel = conf->channel; 2368 old_params->ht_enabled = conf->ieee80211n; 2369 old_params->sec_channel_offset = conf->secondary_channel; 2370 } 2371 2372 conf->channel = channel; 2373 conf->ieee80211n = params->ht_enabled; 2374 conf->secondary_channel = params->sec_channel_offset; 2375 2376 /* TODO: maybe call here hostapd_config_check here? */ 2377 2378 return 0; 2379} 2380 2381 2382static int hostapd_fill_csa_settings(struct hostapd_data *hapd, 2383 struct csa_settings *settings) 2384{ 2385 struct hostapd_iface *iface = hapd->iface; 2386 struct hostapd_freq_params old_freq; 2387 int ret; 2388 2389 os_memset(&old_freq, 0, sizeof(old_freq)); 2390 if (!iface || !iface->freq || hapd->csa_in_progress) 2391 return -1; 2392 2393 ret = hostapd_change_config_freq(iface->bss[0], iface->conf, 2394 &settings->freq_params, 2395 &old_freq); 2396 if (ret) 2397 return ret; 2398 2399 ret = hostapd_build_beacon_data(hapd, &settings->beacon_after); 2400 2401 /* change back the configuration */ 2402 hostapd_change_config_freq(iface->bss[0], iface->conf, 2403 &old_freq, NULL); 2404 2405 if (ret) 2406 return ret; 2407 2408 /* set channel switch parameters for csa ie */ 2409 hapd->cs_freq_params = settings->freq_params; 2410 hapd->cs_count = settings->cs_count; 2411 hapd->cs_block_tx = settings->block_tx; 2412 2413 ret = hostapd_build_beacon_data(hapd, &settings->beacon_csa); 2414 if (ret) { 2415 free_beacon_data(&settings->beacon_after); 2416 return ret; 2417 } 2418 2419 settings->counter_offset_beacon = hapd->cs_c_off_beacon; 2420 settings->counter_offset_presp = hapd->cs_c_off_proberesp; 2421 2422 return 0; 2423} 2424 2425 2426void hostapd_cleanup_cs_params(struct hostapd_data *hapd) 2427{ 2428 os_memset(&hapd->cs_freq_params, 0, sizeof(hapd->cs_freq_params)); 2429 hapd->cs_count = 0; 2430 hapd->cs_block_tx = 0; 2431 hapd->cs_c_off_beacon = 0; 2432 hapd->cs_c_off_proberesp = 0; 2433 hapd->csa_in_progress = 0; 2434} 2435 2436 2437int hostapd_switch_channel(struct hostapd_data *hapd, 2438 struct csa_settings *settings) 2439{ 2440 int ret; 2441 2442 if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) { 2443 wpa_printf(MSG_INFO, "CSA is not supported"); 2444 return -1; 2445 } 2446 2447 ret = hostapd_fill_csa_settings(hapd, settings); 2448 if (ret) 2449 return ret; 2450 2451 ret = hostapd_drv_switch_channel(hapd, settings); 2452 free_beacon_data(&settings->beacon_csa); 2453 free_beacon_data(&settings->beacon_after); 2454 2455 if (ret) { 2456 /* if we failed, clean cs parameters */ 2457 hostapd_cleanup_cs_params(hapd); 2458 return ret; 2459 } 2460 2461 hapd->csa_in_progress = 1; 2462 return 0; 2463} 2464 2465 2466void 2467hostapd_switch_channel_fallback(struct hostapd_iface *iface, 2468 const struct hostapd_freq_params *freq_params) 2469{ 2470 int vht_seg0_idx = 0, vht_seg1_idx = 0, vht_bw = VHT_CHANWIDTH_USE_HT; 2471 unsigned int i; 2472 2473 wpa_printf(MSG_DEBUG, "Restarting all CSA-related BSSes"); 2474 2475 if (freq_params->center_freq1) 2476 vht_seg0_idx = 36 + (freq_params->center_freq1 - 5180) / 5; 2477 if (freq_params->center_freq2) 2478 vht_seg1_idx = 36 + (freq_params->center_freq2 - 5180) / 5; 2479 2480 switch (freq_params->bandwidth) { 2481 case 0: 2482 case 20: 2483 case 40: 2484 vht_bw = VHT_CHANWIDTH_USE_HT; 2485 break; 2486 case 80: 2487 if (freq_params->center_freq2) 2488 vht_bw = VHT_CHANWIDTH_80P80MHZ; 2489 else 2490 vht_bw = VHT_CHANWIDTH_80MHZ; 2491 break; 2492 case 160: 2493 vht_bw = VHT_CHANWIDTH_160MHZ; 2494 break; 2495 default: 2496 wpa_printf(MSG_WARNING, "Unknown CSA bandwidth: %d", 2497 freq_params->bandwidth); 2498 break; 2499 } 2500 2501 iface->freq = freq_params->freq; 2502 iface->conf->channel = freq_params->channel; 2503 iface->conf->secondary_channel = freq_params->sec_channel_offset; 2504 iface->conf->vht_oper_centr_freq_seg0_idx = vht_seg0_idx; 2505 iface->conf->vht_oper_centr_freq_seg1_idx = vht_seg1_idx; 2506 iface->conf->vht_oper_chwidth = vht_bw; 2507 iface->conf->ieee80211n = freq_params->ht_enabled; 2508 iface->conf->ieee80211ac = freq_params->vht_enabled; 2509 2510 /* 2511 * cs_params must not be cleared earlier because the freq_params 2512 * argument may actually point to one of these. 2513 */ 2514 for (i = 0; i < iface->num_bss; i++) 2515 hostapd_cleanup_cs_params(iface->bss[i]); 2516 2517 hostapd_disable_iface(iface); 2518 hostapd_enable_iface(iface); 2519} 2520 2521#endif /* NEED_AP_MLME */ 2522