1 /* 2 * wpa_supplicant - P2P 3 * Copyright (c) 2009-2010, Atheros Communications 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #include "includes.h" 10 11 #include "common.h" 12 #include "eloop.h" 13 #include "common/ieee802_11_common.h" 14 #include "common/ieee802_11_defs.h" 15 #include "common/wpa_ctrl.h" 16 #include "wps/wps_i.h" 17 #include "p2p/p2p.h" 18 #include "ap/hostapd.h" 19 #include "ap/ap_config.h" 20 #include "ap/p2p_hostapd.h" 21 #include "eapol_supp/eapol_supp_sm.h" 22 #include "rsn_supp/wpa.h" 23 #include "wpa_supplicant_i.h" 24 #include "driver_i.h" 25 #include "ap.h" 26 #include "config_ssid.h" 27 #include "config.h" 28 #include "notify.h" 29 #include "scan.h" 30 #include "bss.h" 31 #include "offchannel.h" 32 #include "wps_supplicant.h" 33 #include "p2p_supplicant.h" 34 35 36 /* 37 * How many times to try to scan to find the GO before giving up on join 38 * request. 39 */ 40 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10 41 42 #ifndef P2P_MAX_CLIENT_IDLE 43 /* 44 * How many seconds to try to reconnect to the GO when connection in P2P client 45 * role has been lost. 46 */ 47 #ifdef ANDROID_P2P 48 #define P2P_MAX_CLIENT_IDLE 20 49 #else 50 #define P2P_MAX_CLIENT_IDLE 10 51 #endif /* ANDROID_P2P */ 52 #endif /* P2P_MAX_CLIENT_IDLE */ 53 54 #ifdef ANDROID_P2P 55 static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s); 56 #endif 57 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); 58 static struct wpa_supplicant * 59 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 60 int go); 61 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s); 62 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); 63 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 64 const u8 *dev_addr, enum p2p_wps_method wps_method); 65 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, 66 void *timeout_ctx); 67 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); 68 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); 69 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); 70 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); 71 72 #ifdef ANDROID_P2P 73 static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s) 74 { 75 struct wpa_supplicant *iface = NULL; 76 77 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 78 if(iface->scanning || iface->wpa_state == WPA_SCANNING) { 79 wpa_printf(MSG_DEBUG, "P2P: Scan in progress on %s," 80 "defer P2P SEARCH", iface->ifname); 81 return 1; 82 } 83 } 84 85 return 0; 86 } 87 #endif 88 89 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, 90 struct wpa_scan_results *scan_res) 91 { 92 size_t i; 93 94 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 95 return; 96 97 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", 98 (int) scan_res->num); 99 100 for (i = 0; i < scan_res->num; i++) { 101 struct wpa_scan_res *bss = scan_res->res[i]; 102 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, 103 bss->freq, bss->level, 104 (const u8 *) (bss + 1), 105 bss->ie_len) > 0) 106 break; 107 } 108 109 p2p_scan_res_handled(wpa_s->global->p2p); 110 } 111 112 113 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, 114 unsigned int num_req_dev_types, 115 const u8 *req_dev_types, const u8 *dev_id) 116 { 117 struct wpa_supplicant *wpa_s = ctx; 118 struct wpa_driver_scan_params params; 119 int ret; 120 struct wpabuf *wps_ie, *ies; 121 int social_channels[] = { 2412, 2437, 2462, 0, 0 }; 122 size_t ielen; 123 int was_in_p2p_scan; 124 125 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 126 return -1; 127 128 os_memset(¶ms, 0, sizeof(params)); 129 130 /* P2P Wildcard SSID */ 131 params.num_ssids = 1; 132 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 133 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 134 135 wpa_s->wps->dev.p2p = 1; 136 wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid, 137 WPS_REQ_ENROLLEE, 138 num_req_dev_types, req_dev_types); 139 if (wps_ie == NULL) 140 return -1; 141 142 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 143 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 144 if (ies == NULL) { 145 wpabuf_free(wps_ie); 146 return -1; 147 } 148 wpabuf_put_buf(ies, wps_ie); 149 wpabuf_free(wps_ie); 150 151 p2p_scan_ie(wpa_s->global->p2p, ies, dev_id); 152 153 params.p2p_probe = 1; 154 params.extra_ies = wpabuf_head(ies); 155 params.extra_ies_len = wpabuf_len(ies); 156 157 switch (type) { 158 case P2P_SCAN_SOCIAL: 159 params.freqs = social_channels; 160 break; 161 case P2P_SCAN_FULL: 162 break; 163 case P2P_SCAN_SPECIFIC: 164 social_channels[0] = freq; 165 social_channels[1] = 0; 166 params.freqs = social_channels; 167 break; 168 case P2P_SCAN_SOCIAL_PLUS_ONE: 169 social_channels[3] = freq; 170 params.freqs = social_channels; 171 break; 172 } 173 174 was_in_p2p_scan = wpa_s->scan_res_handler == wpas_p2p_scan_res_handler; 175 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; 176 ret = wpa_drv_scan(wpa_s, ¶ms); 177 178 wpabuf_free(ies); 179 180 if (ret) { 181 wpa_s->scan_res_handler = NULL; 182 #ifdef ANDROID_P2P 183 if (wpa_s->scanning || was_in_p2p_scan || wpas_global_scan_in_progress(wpa_s)) { 184 #else 185 if (wpa_s->scanning || was_in_p2p_scan) { 186 #endif 187 wpa_s->p2p_cb_on_scan_complete = 1; 188 ret = 1; 189 } 190 } 191 192 return ret; 193 } 194 195 196 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) 197 { 198 switch (p2p_group_interface) { 199 case P2P_GROUP_INTERFACE_PENDING: 200 return WPA_IF_P2P_GROUP; 201 case P2P_GROUP_INTERFACE_GO: 202 return WPA_IF_P2P_GO; 203 case P2P_GROUP_INTERFACE_CLIENT: 204 return WPA_IF_P2P_CLIENT; 205 } 206 207 return WPA_IF_P2P_GROUP; 208 } 209 210 211 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, 212 const u8 *ssid, 213 size_t ssid_len, int *go) 214 { 215 struct wpa_ssid *s; 216 217 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 218 for (s = wpa_s->conf->ssid; s; s = s->next) { 219 if (s->disabled != 0 || !s->p2p_group || 220 s->ssid_len != ssid_len || 221 os_memcmp(ssid, s->ssid, ssid_len) != 0) 222 continue; 223 if (s->mode == WPAS_MODE_P2P_GO && 224 s != wpa_s->current_ssid) 225 continue; 226 if (go) 227 *go = s->mode == WPAS_MODE_P2P_GO; 228 return wpa_s; 229 } 230 } 231 232 return NULL; 233 } 234 235 236 static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s) 237 { 238 struct wpa_ssid *ssid; 239 char *gtype; 240 const char *reason; 241 242 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 243 244 ssid = wpa_s->current_ssid; 245 if (ssid == NULL) { 246 /* 247 * The current SSID was not known, but there may still be a 248 * pending P2P group interface waiting for provisioning. 249 */ 250 ssid = wpa_s->conf->ssid; 251 while (ssid) { 252 if (ssid->p2p_group && 253 (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 254 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) 255 break; 256 ssid = ssid->next; 257 } 258 } 259 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) 260 gtype = "GO"; 261 else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || 262 (ssid && ssid->mode == WPAS_MODE_INFRA)) { 263 wpa_s->reassociate = 0; 264 wpa_s->disconnected = 1; 265 wpa_supplicant_deauthenticate(wpa_s, 266 WLAN_REASON_DEAUTH_LEAVING); 267 gtype = "client"; 268 } else 269 gtype = "GO"; 270 if (wpa_s->cross_connect_in_use) { 271 wpa_s->cross_connect_in_use = 0; 272 wpa_msg(wpa_s->parent, MSG_INFO, 273 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 274 wpa_s->ifname, wpa_s->cross_connect_uplink); 275 } 276 switch (wpa_s->removal_reason) { 277 case P2P_GROUP_REMOVAL_REQUESTED: 278 reason = " reason=REQUESTED"; 279 break; 280 case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: 281 reason = " reason=IDLE"; 282 break; 283 case P2P_GROUP_REMOVAL_UNAVAILABLE: 284 reason = " reason=UNAVAILABLE"; 285 break; 286 #ifdef ANDROID_P2P 287 case P2P_GROUP_REMOVAL_FREQ_CONFLICT: 288 reason = " reason=FREQ_CONFLICT"; 289 break; 290 #endif 291 default: 292 reason = ""; 293 break; 294 } 295 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_REMOVED "%s %s%s", 296 wpa_s->ifname, gtype, reason); 297 298 if (ssid) 299 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); 300 301 if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { 302 struct wpa_global *global; 303 char *ifname; 304 enum wpa_driver_if_type type; 305 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", 306 wpa_s->ifname); 307 global = wpa_s->global; 308 ifname = os_strdup(wpa_s->ifname); 309 type = wpas_p2p_if_type(wpa_s->p2p_group_interface); 310 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); 311 wpa_s = global->ifaces; 312 if (wpa_s && ifname) 313 wpa_drv_if_remove(wpa_s, type, ifname); 314 os_free(ifname); 315 return; 316 } 317 318 wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); 319 if (ssid && (ssid->p2p_group || 320 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || 321 (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { 322 int id = ssid->id; 323 if (ssid == wpa_s->current_ssid) { 324 wpa_sm_set_config(wpa_s->wpa, NULL); 325 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); 326 wpa_s->current_ssid = NULL; 327 } 328 /* 329 * Networks objects created during any P2P activities are not 330 * exposed out as they might/will confuse certain non-P2P aware 331 * applications since these network objects won't behave like 332 * regular ones. 333 * 334 * Likewise, we don't send out network removed signals for such 335 * network objects. 336 */ 337 wpa_config_remove_network(wpa_s->conf, id); 338 wpa_supplicant_clear_status(wpa_s); 339 wpa_supplicant_cancel_sched_scan(wpa_s); 340 } else { 341 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " 342 "found"); 343 } 344 wpa_supplicant_ap_deinit(wpa_s); 345 } 346 347 348 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, 349 u8 *go_dev_addr, 350 const u8 *ssid, size_t ssid_len) 351 { 352 struct wpa_bss *bss; 353 const u8 *bssid; 354 struct wpabuf *p2p; 355 u8 group_capab; 356 const u8 *addr; 357 358 if (wpa_s->go_params) 359 bssid = wpa_s->go_params->peer_interface_addr; 360 else 361 bssid = wpa_s->bssid; 362 363 bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); 364 if (bss == NULL) { 365 u8 iface_addr[ETH_ALEN]; 366 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, 367 iface_addr) == 0) 368 bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); 369 } 370 if (bss == NULL) { 371 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 372 "group is persistent - BSS " MACSTR " not found", 373 MAC2STR(bssid)); 374 return 0; 375 } 376 377 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 378 if (p2p == NULL) { 379 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " 380 "group is persistent - BSS " MACSTR 381 " did not include P2P IE", MAC2STR(bssid)); 382 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", 383 (u8 *) (bss + 1), bss->ie_len); 384 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", 385 ((u8 *) bss + 1) + bss->ie_len, 386 bss->beacon_ie_len); 387 return 0; 388 } 389 390 group_capab = p2p_get_group_capab(p2p); 391 addr = p2p_get_go_dev_addr(p2p); 392 wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " 393 "group_capab=0x%x", group_capab); 394 if (addr) { 395 os_memcpy(go_dev_addr, addr, ETH_ALEN); 396 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, 397 MAC2STR(addr)); 398 } else 399 os_memset(go_dev_addr, 0, ETH_ALEN); 400 wpabuf_free(p2p); 401 402 wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " 403 "go_dev_addr=" MACSTR, 404 MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); 405 406 return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP; 407 } 408 409 410 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, 411 struct wpa_ssid *ssid, 412 const u8 *go_dev_addr) 413 { 414 struct wpa_ssid *s; 415 int changed = 0; 416 417 wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " 418 "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); 419 for (s = wpa_s->conf->ssid; s; s = s->next) { 420 if (s->disabled == 2 && 421 os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && 422 s->ssid_len == ssid->ssid_len && 423 os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) 424 break; 425 } 426 427 if (s) { 428 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " 429 "entry"); 430 if (ssid->passphrase && !s->passphrase) 431 changed = 1; 432 else if (ssid->passphrase && s->passphrase && 433 os_strcmp(ssid->passphrase, s->passphrase) != 0) 434 changed = 1; 435 } else { 436 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " 437 "entry"); 438 changed = 1; 439 s = wpa_config_add_network(wpa_s->conf); 440 if (s == NULL) 441 return -1; 442 443 /* 444 * Instead of network_added we emit persistent_group_added 445 * notification. Also to keep the defense checks in 446 * persistent_group obj registration method, we set the 447 * relevant flags in s to designate it as a persistent group. 448 */ 449 s->p2p_group = 1; 450 s->p2p_persistent_group = 1; 451 wpas_notify_persistent_group_added(wpa_s, s); 452 wpa_config_set_network_defaults(s); 453 } 454 455 s->p2p_group = 1; 456 s->p2p_persistent_group = 1; 457 s->disabled = 2; 458 s->bssid_set = 1; 459 os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); 460 s->mode = ssid->mode; 461 s->auth_alg = WPA_AUTH_ALG_OPEN; 462 s->key_mgmt = WPA_KEY_MGMT_PSK; 463 s->proto = WPA_PROTO_RSN; 464 s->pairwise_cipher = WPA_CIPHER_CCMP; 465 s->export_keys = 1; 466 if (ssid->passphrase) { 467 os_free(s->passphrase); 468 s->passphrase = os_strdup(ssid->passphrase); 469 } 470 if (ssid->psk_set) { 471 s->psk_set = 1; 472 os_memcpy(s->psk, ssid->psk, 32); 473 } 474 if (s->passphrase && !s->psk_set) 475 wpa_config_update_psk(s); 476 if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { 477 os_free(s->ssid); 478 s->ssid = os_malloc(ssid->ssid_len); 479 } 480 if (s->ssid) { 481 s->ssid_len = ssid->ssid_len; 482 os_memcpy(s->ssid, ssid->ssid, s->ssid_len); 483 } 484 485 #ifndef CONFIG_NO_CONFIG_WRITE 486 if (changed && wpa_s->conf->update_config && 487 wpa_config_write(wpa_s->confname, wpa_s->conf)) { 488 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 489 } 490 #endif /* CONFIG_NO_CONFIG_WRITE */ 491 492 return s->id; 493 } 494 495 496 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, 497 const u8 *addr) 498 { 499 struct wpa_ssid *ssid, *s; 500 u8 *n; 501 size_t i; 502 503 ssid = wpa_s->current_ssid; 504 if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || 505 !ssid->p2p_persistent_group) 506 return; 507 508 for (s = wpa_s->parent->conf->ssid; s; s = s->next) { 509 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) 510 continue; 511 512 if (s->ssid_len == ssid->ssid_len && 513 os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) 514 break; 515 } 516 517 if (s == NULL) 518 return; 519 520 for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { 521 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr, 522 ETH_ALEN) == 0) 523 return; /* already in list */ 524 } 525 526 n = os_realloc(s->p2p_client_list, 527 (s->num_p2p_clients + 1) * ETH_ALEN); 528 if (n == NULL) 529 return; 530 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN); 531 s->p2p_client_list = n; 532 s->num_p2p_clients++; 533 534 #ifndef CONFIG_NO_CONFIG_WRITE 535 if (wpa_s->parent->conf->update_config && 536 wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) 537 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); 538 #endif /* CONFIG_NO_CONFIG_WRITE */ 539 } 540 541 542 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, 543 int success) 544 { 545 struct wpa_ssid *ssid; 546 const char *ssid_txt; 547 int client; 548 int persistent; 549 u8 go_dev_addr[ETH_ALEN]; 550 int network_id = -1; 551 552 /* 553 * This callback is likely called for the main interface. Update wpa_s 554 * to use the group interface if a new interface was created for the 555 * group. 556 */ 557 if (wpa_s->global->p2p_group_formation) 558 wpa_s = wpa_s->global->p2p_group_formation; 559 wpa_s->global->p2p_group_formation = NULL; 560 wpa_s->p2p_in_provisioning = 0; 561 562 if (!success) { 563 wpa_msg(wpa_s->parent, MSG_INFO, 564 P2P_EVENT_GROUP_FORMATION_FAILURE); 565 wpas_p2p_group_delete(wpa_s); 566 return; 567 } 568 569 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS); 570 571 ssid = wpa_s->current_ssid; 572 if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { 573 ssid->mode = WPAS_MODE_P2P_GO; 574 p2p_group_notif_formation_done(wpa_s->p2p_group); 575 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); 576 } 577 578 persistent = 0; 579 if (ssid) { 580 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 581 client = ssid->mode == WPAS_MODE_INFRA; 582 if (ssid->mode == WPAS_MODE_P2P_GO) { 583 persistent = ssid->p2p_persistent_group; 584 os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, 585 ETH_ALEN); 586 } else 587 persistent = wpas_p2p_persistent_group(wpa_s, 588 go_dev_addr, 589 ssid->ssid, 590 ssid->ssid_len); 591 } else { 592 ssid_txt = ""; 593 client = wpa_s->p2p_group_interface == 594 P2P_GROUP_INTERFACE_CLIENT; 595 os_memset(go_dev_addr, 0, ETH_ALEN); 596 } 597 598 wpa_s->show_group_started = 0; 599 if (client) { 600 /* 601 * Indicate event only after successfully completed 4-way 602 * handshake, i.e., when the interface is ready for data 603 * packets. 604 */ 605 wpa_s->show_group_started = 1; 606 } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) { 607 char psk[65]; 608 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 609 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 610 "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR 611 "%s", 612 wpa_s->ifname, ssid_txt, ssid->frequency, psk, 613 MAC2STR(go_dev_addr), 614 persistent ? " [PERSISTENT]" : ""); 615 wpas_p2p_cross_connect_setup(wpa_s); 616 wpas_p2p_set_group_idle_timeout(wpa_s); 617 } else { 618 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 619 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 620 "go_dev_addr=" MACSTR "%s", 621 wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0, 622 ssid && ssid->passphrase ? ssid->passphrase : "", 623 MAC2STR(go_dev_addr), 624 persistent ? " [PERSISTENT]" : ""); 625 wpas_p2p_cross_connect_setup(wpa_s); 626 wpas_p2p_set_group_idle_timeout(wpa_s); 627 } 628 629 if (persistent) 630 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 631 ssid, go_dev_addr); 632 if (network_id < 0 && ssid) 633 network_id = ssid->id; 634 if (!client) 635 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 636 } 637 638 639 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, 640 unsigned int freq, 641 const u8 *dst, const u8 *src, 642 const u8 *bssid, 643 const u8 *data, size_t data_len, 644 enum offchannel_send_action_result 645 result) 646 { 647 enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; 648 649 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 650 return; 651 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 652 return; 653 654 switch (result) { 655 case OFFCHANNEL_SEND_ACTION_SUCCESS: 656 res = P2P_SEND_ACTION_SUCCESS; 657 break; 658 case OFFCHANNEL_SEND_ACTION_NO_ACK: 659 res = P2P_SEND_ACTION_NO_ACK; 660 break; 661 case OFFCHANNEL_SEND_ACTION_FAILED: 662 res = P2P_SEND_ACTION_FAILED; 663 break; 664 } 665 666 p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); 667 668 if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && 669 wpa_s->pending_pd_before_join && 670 (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 671 os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 672 wpa_s->pending_pd_before_join = 0; 673 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 674 "join-existing-group operation (no ACK for PD " 675 "Req)"); 676 wpas_p2p_join_start(wpa_s); 677 } 678 } 679 680 681 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, 682 const u8 *src, const u8 *bssid, const u8 *buf, 683 size_t len, unsigned int wait_time) 684 { 685 struct wpa_supplicant *wpa_s = ctx; 686 return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, 687 wait_time, 688 wpas_p2p_send_action_tx_status, 1); 689 } 690 691 692 static void wpas_send_action_done(void *ctx) 693 { 694 struct wpa_supplicant *wpa_s = ctx; 695 offchannel_send_action_done(wpa_s); 696 } 697 698 699 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, 700 struct p2p_go_neg_results *params) 701 { 702 if (wpa_s->go_params == NULL) { 703 wpa_s->go_params = os_malloc(sizeof(*params)); 704 if (wpa_s->go_params == NULL) 705 return -1; 706 } 707 os_memcpy(wpa_s->go_params, params, sizeof(*params)); 708 return 0; 709 } 710 711 712 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, 713 struct p2p_go_neg_results *res) 714 { 715 wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR, 716 MAC2STR(res->peer_interface_addr)); 717 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", 718 res->ssid, res->ssid_len); 719 wpa_supplicant_ap_deinit(wpa_s); 720 wpas_copy_go_neg_results(wpa_s, res); 721 if (res->wps_method == WPS_PBC) 722 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); 723 else { 724 u16 dev_pw_id = DEV_PW_DEFAULT; 725 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) 726 dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; 727 wpas_wps_start_pin(wpa_s, res->peer_interface_addr, 728 wpa_s->p2p_pin, 1, dev_pw_id); 729 } 730 } 731 732 733 static void p2p_go_configured(void *ctx, void *data) 734 { 735 struct wpa_supplicant *wpa_s = ctx; 736 struct p2p_go_neg_results *params = data; 737 struct wpa_ssid *ssid; 738 int network_id = -1; 739 740 ssid = wpa_s->current_ssid; 741 if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { 742 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); 743 if (wpa_s->global->p2p_group_formation == wpa_s) 744 wpa_s->global->p2p_group_formation = NULL; 745 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 746 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " 747 "go_dev_addr=" MACSTR "%s", 748 wpa_s->ifname, 749 wpa_ssid_txt(ssid->ssid, ssid->ssid_len), 750 ssid->frequency, 751 params->passphrase ? params->passphrase : "", 752 MAC2STR(wpa_s->global->p2p_dev_addr), 753 params->persistent_group ? " [PERSISTENT]" : ""); 754 755 if (params->persistent_group) 756 network_id = wpas_p2p_store_persistent_group( 757 wpa_s->parent, ssid, 758 wpa_s->global->p2p_dev_addr); 759 if (network_id < 0) 760 network_id = ssid->id; 761 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); 762 wpas_p2p_cross_connect_setup(wpa_s); 763 wpas_p2p_set_group_idle_timeout(wpa_s); 764 return; 765 } 766 767 wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); 768 if (wpa_supplicant_ap_mac_addr_filter(wpa_s, 769 params->peer_interface_addr)) { 770 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " 771 "filtering"); 772 return; 773 } 774 if (params->wps_method == WPS_PBC) 775 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, 776 params->peer_device_addr); 777 else if (wpa_s->p2p_pin[0]) 778 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, 779 wpa_s->p2p_pin, NULL, 0); 780 os_free(wpa_s->go_params); 781 wpa_s->go_params = NULL; 782 } 783 784 785 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, 786 struct p2p_go_neg_results *params, 787 int group_formation) 788 { 789 struct wpa_ssid *ssid; 790 791 if (wpas_copy_go_neg_results(wpa_s, params) < 0) 792 return; 793 794 ssid = wpa_config_add_network(wpa_s->conf); 795 if (ssid == NULL) 796 return; 797 798 wpa_s->show_group_started = 0; 799 800 wpa_config_set_network_defaults(ssid); 801 ssid->temporary = 1; 802 ssid->p2p_group = 1; 803 ssid->p2p_persistent_group = params->persistent_group; 804 ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : 805 WPAS_MODE_P2P_GO; 806 ssid->frequency = params->freq; 807 ssid->ssid = os_zalloc(params->ssid_len + 1); 808 if (ssid->ssid) { 809 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 810 ssid->ssid_len = params->ssid_len; 811 } 812 ssid->auth_alg = WPA_AUTH_ALG_OPEN; 813 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 814 ssid->proto = WPA_PROTO_RSN; 815 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 816 ssid->passphrase = os_strdup(params->passphrase); 817 818 wpa_s->ap_configured_cb = p2p_go_configured; 819 wpa_s->ap_configured_cb_ctx = wpa_s; 820 wpa_s->ap_configured_cb_data = wpa_s->go_params; 821 wpa_s->connect_without_scan = ssid; 822 wpa_s->reassociate = 1; 823 wpa_s->disconnected = 0; 824 wpa_supplicant_req_scan(wpa_s, 0, 0); 825 } 826 827 828 static void wpas_p2p_clone_config(struct wpa_supplicant *dst, 829 const struct wpa_supplicant *src) 830 { 831 struct wpa_config *d; 832 const struct wpa_config *s; 833 834 d = dst->conf; 835 s = src->conf; 836 837 #define C(n) if (s->n) d->n = os_strdup(s->n) 838 C(device_name); 839 C(manufacturer); 840 C(model_name); 841 C(model_number); 842 C(serial_number); 843 C(config_methods); 844 #undef C 845 846 os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); 847 os_memcpy(d->sec_device_type, s->sec_device_type, 848 sizeof(d->sec_device_type)); 849 d->num_sec_device_types = s->num_sec_device_types; 850 851 d->p2p_group_idle = s->p2p_group_idle; 852 d->p2p_intra_bss = s->p2p_intra_bss; 853 d->persistent_reconnect = s->persistent_reconnect; 854 } 855 856 857 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, 858 enum wpa_driver_if_type type) 859 { 860 char ifname[120], force_ifname[120]; 861 862 if (wpa_s->pending_interface_name[0]) { 863 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " 864 "- skip creation of a new one"); 865 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { 866 wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " 867 "unknown?! ifname='%s'", 868 wpa_s->pending_interface_name); 869 return -1; 870 } 871 return 0; 872 } 873 874 os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname, 875 wpa_s->p2p_group_idx); 876 if (os_strlen(ifname) >= IFNAMSIZ && 877 os_strlen(wpa_s->ifname) < IFNAMSIZ) { 878 /* Try to avoid going over the IFNAMSIZ length limit */ 879 os_snprintf(ifname, sizeof(ifname), "p2p-%d", 880 wpa_s->p2p_group_idx); 881 } 882 force_ifname[0] = '\0'; 883 884 wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", 885 ifname); 886 wpa_s->p2p_group_idx++; 887 888 wpa_s->pending_interface_type = type; 889 if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, 890 wpa_s->pending_interface_addr, NULL) < 0) { 891 wpa_printf(MSG_ERROR, "P2P: Failed to create new group " 892 "interface"); 893 return -1; 894 } 895 896 if (force_ifname[0]) { 897 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", 898 force_ifname); 899 os_strlcpy(wpa_s->pending_interface_name, force_ifname, 900 sizeof(wpa_s->pending_interface_name)); 901 } else 902 os_strlcpy(wpa_s->pending_interface_name, ifname, 903 sizeof(wpa_s->pending_interface_name)); 904 wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " 905 MACSTR, wpa_s->pending_interface_name, 906 MAC2STR(wpa_s->pending_interface_addr)); 907 908 return 0; 909 } 910 911 912 static void wpas_p2p_remove_pending_group_interface( 913 struct wpa_supplicant *wpa_s) 914 { 915 if (!wpa_s->pending_interface_name[0] || 916 is_zero_ether_addr(wpa_s->pending_interface_addr)) 917 return; /* No pending virtual interface */ 918 919 wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", 920 wpa_s->pending_interface_name); 921 wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, 922 wpa_s->pending_interface_name); 923 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 924 wpa_s->pending_interface_name[0] = '\0'; 925 } 926 927 928 static struct wpa_supplicant * 929 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) 930 { 931 struct wpa_interface iface; 932 struct wpa_supplicant *group_wpa_s; 933 934 if (!wpa_s->pending_interface_name[0]) { 935 wpa_printf(MSG_ERROR, "P2P: No pending group interface"); 936 if (!wpas_p2p_create_iface(wpa_s)) 937 return NULL; 938 /* 939 * Something has forced us to remove the pending interface; try 940 * to create a new one and hope for the best that we will get 941 * the same local address. 942 */ 943 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 944 WPA_IF_P2P_CLIENT) < 0) 945 return NULL; 946 } 947 948 os_memset(&iface, 0, sizeof(iface)); 949 iface.ifname = wpa_s->pending_interface_name; 950 iface.driver = wpa_s->driver->name; 951 iface.ctrl_interface = wpa_s->conf->ctrl_interface; 952 iface.driver_param = wpa_s->conf->driver_param; 953 group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface); 954 if (group_wpa_s == NULL) { 955 wpa_printf(MSG_ERROR, "P2P: Failed to create new " 956 "wpa_supplicant interface"); 957 return NULL; 958 } 959 wpa_s->pending_interface_name[0] = '\0'; 960 group_wpa_s->parent = wpa_s; 961 group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : 962 P2P_GROUP_INTERFACE_CLIENT; 963 wpa_s->global->p2p_group_formation = group_wpa_s; 964 965 wpas_p2p_clone_config(group_wpa_s, wpa_s); 966 967 return group_wpa_s; 968 } 969 970 971 static void wpas_p2p_group_formation_timeout(void *eloop_ctx, 972 void *timeout_ctx) 973 { 974 struct wpa_supplicant *wpa_s = eloop_ctx; 975 wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); 976 if (wpa_s->global->p2p) 977 p2p_group_formation_failed(wpa_s->global->p2p); 978 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 979 wpa_drv_p2p_group_formation_failed(wpa_s); 980 wpas_group_formation_completed(wpa_s, 0); 981 } 982 983 984 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) 985 { 986 struct wpa_supplicant *wpa_s = ctx; 987 988 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 989 wpa_drv_cancel_remain_on_channel(wpa_s); 990 wpa_s->off_channel_freq = 0; 991 wpa_s->roc_waiting_drv_freq = 0; 992 } 993 994 if (res->status) { 995 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d", 996 res->status); 997 wpas_notify_p2p_go_neg_completed(wpa_s, res); 998 wpas_p2p_remove_pending_group_interface(wpa_s); 999 return; 1000 } 1001 1002 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS); 1003 wpas_notify_p2p_go_neg_completed(wpa_s, res); 1004 1005 if (wpa_s->create_p2p_iface) { 1006 struct wpa_supplicant *group_wpa_s = 1007 wpas_p2p_init_group_interface(wpa_s, res->role_go); 1008 if (group_wpa_s == NULL) { 1009 wpas_p2p_remove_pending_group_interface(wpa_s); 1010 return; 1011 } 1012 if (group_wpa_s != wpa_s) { 1013 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, 1014 sizeof(group_wpa_s->p2p_pin)); 1015 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; 1016 } 1017 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); 1018 wpa_s->pending_interface_name[0] = '\0'; 1019 group_wpa_s->p2p_in_provisioning = 1; 1020 1021 if (res->role_go) 1022 wpas_start_wps_go(group_wpa_s, res, 1); 1023 else 1024 wpas_start_wps_enrollee(group_wpa_s, res); 1025 } else { 1026 wpa_s->p2p_in_provisioning = 1; 1027 wpa_s->global->p2p_group_formation = wpa_s; 1028 1029 if (res->role_go) 1030 wpas_start_wps_go(wpa_s, res, 1); 1031 else 1032 wpas_start_wps_enrollee(ctx, res); 1033 } 1034 1035 wpa_s->p2p_long_listen = 0; 1036 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 1037 1038 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 1039 eloop_register_timeout(15 + res->peer_config_timeout / 100, 1040 (res->peer_config_timeout % 100) * 10000, 1041 wpas_p2p_group_formation_timeout, wpa_s, NULL); 1042 } 1043 1044 1045 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id) 1046 { 1047 struct wpa_supplicant *wpa_s = ctx; 1048 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR 1049 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id); 1050 1051 wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id); 1052 } 1053 1054 1055 void wpas_dev_found(void *ctx, const u8 *addr, 1056 const struct p2p_peer_info *info, 1057 int new_device) 1058 { 1059 #ifndef CONFIG_NO_STDOUT_DEBUG 1060 struct wpa_supplicant *wpa_s = ctx; 1061 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1062 1063 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR 1064 " p2p_dev_addr=" MACSTR 1065 " pri_dev_type=%s name='%s' config_methods=0x%x " 1066 "dev_capab=0x%x group_capab=0x%x", 1067 MAC2STR(addr), MAC2STR(info->p2p_device_addr), 1068 wps_dev_type_bin2str(info->pri_dev_type, devtype, 1069 sizeof(devtype)), 1070 info->device_name, info->config_methods, 1071 info->dev_capab, info->group_capab); 1072 #endif /* CONFIG_NO_STDOUT_DEBUG */ 1073 1074 wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); 1075 } 1076 1077 1078 static void wpas_dev_lost(void *ctx, const u8 *dev_addr) 1079 { 1080 struct wpa_supplicant *wpa_s = ctx; 1081 1082 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST 1083 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); 1084 1085 wpas_notify_p2p_device_lost(wpa_s, dev_addr); 1086 } 1087 1088 1089 static int wpas_start_listen(void *ctx, unsigned int freq, 1090 unsigned int duration, 1091 const struct wpabuf *probe_resp_ie) 1092 { 1093 struct wpa_supplicant *wpa_s = ctx; 1094 1095 wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL); 1096 1097 if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { 1098 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " 1099 "report received Probe Request frames"); 1100 return -1; 1101 } 1102 1103 wpa_s->pending_listen_freq = freq; 1104 wpa_s->pending_listen_duration = duration; 1105 1106 if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) { 1107 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " 1108 "to remain on channel (%u MHz) for Listen " 1109 "state", freq); 1110 wpa_s->pending_listen_freq = 0; 1111 return -1; 1112 } 1113 wpa_s->off_channel_freq = 0; 1114 wpa_s->roc_waiting_drv_freq = freq; 1115 1116 return 0; 1117 } 1118 1119 1120 static void wpas_stop_listen(void *ctx) 1121 { 1122 struct wpa_supplicant *wpa_s = ctx; 1123 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 1124 wpa_drv_cancel_remain_on_channel(wpa_s); 1125 wpa_s->off_channel_freq = 0; 1126 wpa_s->roc_waiting_drv_freq = 0; 1127 } 1128 wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); 1129 wpa_drv_probe_req_report(wpa_s, 0); 1130 } 1131 1132 1133 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf) 1134 { 1135 struct wpa_supplicant *wpa_s = ctx; 1136 return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1); 1137 } 1138 1139 1140 static struct p2p_srv_bonjour * 1141 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s, 1142 const struct wpabuf *query) 1143 { 1144 struct p2p_srv_bonjour *bsrv; 1145 size_t len; 1146 1147 len = wpabuf_len(query); 1148 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1149 struct p2p_srv_bonjour, list) { 1150 if (len == wpabuf_len(bsrv->query) && 1151 os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query), 1152 len) == 0) 1153 return bsrv; 1154 } 1155 return NULL; 1156 } 1157 1158 1159 static struct p2p_srv_upnp * 1160 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version, 1161 const char *service) 1162 { 1163 struct p2p_srv_upnp *usrv; 1164 1165 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1166 struct p2p_srv_upnp, list) { 1167 if (version == usrv->version && 1168 os_strcmp(service, usrv->service) == 0) 1169 return usrv; 1170 } 1171 return NULL; 1172 } 1173 1174 1175 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto, 1176 u8 srv_trans_id) 1177 { 1178 u8 *len_pos; 1179 1180 if (wpabuf_tailroom(resp) < 5) 1181 return; 1182 1183 /* Length (to be filled) */ 1184 len_pos = wpabuf_put(resp, 2); 1185 wpabuf_put_u8(resp, srv_proto); 1186 wpabuf_put_u8(resp, srv_trans_id); 1187 /* Status Code */ 1188 wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE); 1189 /* Response Data: empty */ 1190 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1191 } 1192 1193 1194 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s, 1195 struct wpabuf *resp, u8 srv_trans_id) 1196 { 1197 struct p2p_srv_bonjour *bsrv; 1198 u8 *len_pos; 1199 1200 wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services"); 1201 1202 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1203 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1204 return; 1205 } 1206 1207 dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, 1208 struct p2p_srv_bonjour, list) { 1209 if (wpabuf_tailroom(resp) < 1210 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) 1211 return; 1212 /* Length (to be filled) */ 1213 len_pos = wpabuf_put(resp, 2); 1214 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1215 wpabuf_put_u8(resp, srv_trans_id); 1216 /* Status Code */ 1217 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1218 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1219 wpabuf_head(bsrv->resp), 1220 wpabuf_len(bsrv->resp)); 1221 /* Response Data */ 1222 wpabuf_put_buf(resp, bsrv->query); /* Key */ 1223 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1224 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1225 2); 1226 } 1227 } 1228 1229 1230 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s, 1231 struct wpabuf *resp, u8 srv_trans_id, 1232 const u8 *query, size_t query_len) 1233 { 1234 struct p2p_srv_bonjour *bsrv; 1235 struct wpabuf buf; 1236 u8 *len_pos; 1237 1238 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour", 1239 query, query_len); 1240 if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1241 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); 1242 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR, 1243 srv_trans_id); 1244 return; 1245 } 1246 1247 if (query_len == 0) { 1248 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1249 return; 1250 } 1251 1252 if (wpabuf_tailroom(resp) < 5) 1253 return; 1254 /* Length (to be filled) */ 1255 len_pos = wpabuf_put(resp, 2); 1256 wpabuf_put_u8(resp, P2P_SERV_BONJOUR); 1257 wpabuf_put_u8(resp, srv_trans_id); 1258 1259 wpabuf_set(&buf, query, query_len); 1260 bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf); 1261 if (bsrv == NULL) { 1262 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not " 1263 "available"); 1264 1265 /* Status Code */ 1266 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1267 /* Response Data: empty */ 1268 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1269 2); 1270 return; 1271 } 1272 1273 /* Status Code */ 1274 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1275 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", 1276 wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp)); 1277 1278 if (wpabuf_tailroom(resp) >= 1279 wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) { 1280 /* Response Data */ 1281 wpabuf_put_buf(resp, bsrv->query); /* Key */ 1282 wpabuf_put_buf(resp, bsrv->resp); /* Value */ 1283 } 1284 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1285 } 1286 1287 1288 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s, 1289 struct wpabuf *resp, u8 srv_trans_id) 1290 { 1291 struct p2p_srv_upnp *usrv; 1292 u8 *len_pos; 1293 1294 wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services"); 1295 1296 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1297 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1298 return; 1299 } 1300 1301 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1302 struct p2p_srv_upnp, list) { 1303 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service)) 1304 return; 1305 1306 /* Length (to be filled) */ 1307 len_pos = wpabuf_put(resp, 2); 1308 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1309 wpabuf_put_u8(resp, srv_trans_id); 1310 1311 /* Status Code */ 1312 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1313 /* Response Data */ 1314 wpabuf_put_u8(resp, usrv->version); 1315 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1316 usrv->service); 1317 wpabuf_put_str(resp, usrv->service); 1318 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 1319 2); 1320 } 1321 } 1322 1323 1324 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s, 1325 struct wpabuf *resp, u8 srv_trans_id, 1326 const u8 *query, size_t query_len) 1327 { 1328 struct p2p_srv_upnp *usrv; 1329 u8 *len_pos; 1330 u8 version; 1331 char *str; 1332 int count = 0; 1333 1334 wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP", 1335 query, query_len); 1336 1337 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { 1338 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); 1339 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP, 1340 srv_trans_id); 1341 return; 1342 } 1343 1344 if (query_len == 0) { 1345 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1346 return; 1347 } 1348 1349 if (wpabuf_tailroom(resp) < 5) 1350 return; 1351 1352 /* Length (to be filled) */ 1353 len_pos = wpabuf_put(resp, 2); 1354 wpabuf_put_u8(resp, P2P_SERV_UPNP); 1355 wpabuf_put_u8(resp, srv_trans_id); 1356 1357 version = query[0]; 1358 str = os_malloc(query_len); 1359 if (str == NULL) 1360 return; 1361 os_memcpy(str, query + 1, query_len - 1); 1362 str[query_len - 1] = '\0'; 1363 1364 dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, 1365 struct p2p_srv_upnp, list) { 1366 if (version != usrv->version) 1367 continue; 1368 1369 if (os_strcmp(str, "ssdp:all") != 0 && 1370 os_strstr(usrv->service, str) == NULL) 1371 continue; 1372 1373 if (wpabuf_tailroom(resp) < 2) 1374 break; 1375 if (count == 0) { 1376 /* Status Code */ 1377 wpabuf_put_u8(resp, P2P_SD_SUCCESS); 1378 /* Response Data */ 1379 wpabuf_put_u8(resp, version); 1380 } else 1381 wpabuf_put_u8(resp, ','); 1382 1383 count++; 1384 1385 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", 1386 usrv->service); 1387 if (wpabuf_tailroom(resp) < os_strlen(usrv->service)) 1388 break; 1389 wpabuf_put_str(resp, usrv->service); 1390 } 1391 os_free(str); 1392 1393 if (count == 0) { 1394 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not " 1395 "available"); 1396 /* Status Code */ 1397 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); 1398 /* Response Data: empty */ 1399 } 1400 1401 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); 1402 } 1403 1404 1405 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token, 1406 u16 update_indic, const u8 *tlvs, size_t tlvs_len) 1407 { 1408 struct wpa_supplicant *wpa_s = ctx; 1409 const u8 *pos = tlvs; 1410 const u8 *end = tlvs + tlvs_len; 1411 const u8 *tlv_end; 1412 u16 slen; 1413 struct wpabuf *resp; 1414 u8 srv_proto, srv_trans_id; 1415 size_t buf_len; 1416 char *buf; 1417 1418 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs", 1419 tlvs, tlvs_len); 1420 buf_len = 2 * tlvs_len + 1; 1421 buf = os_malloc(buf_len); 1422 if (buf) { 1423 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1424 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d " 1425 MACSTR " %u %u %s", 1426 freq, MAC2STR(sa), dialog_token, update_indic, 1427 buf); 1428 os_free(buf); 1429 } 1430 1431 if (wpa_s->p2p_sd_over_ctrl_iface) { 1432 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1433 update_indic, tlvs, tlvs_len); 1434 return; /* to be processed by an external program */ 1435 } 1436 1437 resp = wpabuf_alloc(10000); 1438 if (resp == NULL) 1439 return; 1440 1441 while (pos + 1 < end) { 1442 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV"); 1443 slen = WPA_GET_LE16(pos); 1444 pos += 2; 1445 if (pos + slen > end || slen < 2) { 1446 wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data " 1447 "length"); 1448 wpabuf_free(resp); 1449 return; 1450 } 1451 tlv_end = pos + slen; 1452 1453 srv_proto = *pos++; 1454 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1455 srv_proto); 1456 srv_trans_id = *pos++; 1457 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1458 srv_trans_id); 1459 1460 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data", 1461 pos, tlv_end - pos); 1462 1463 1464 if (wpa_s->force_long_sd) { 1465 wpa_printf(MSG_DEBUG, "P2P: SD test - force long " 1466 "response"); 1467 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1468 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1469 goto done; 1470 } 1471 1472 switch (srv_proto) { 1473 case P2P_SERV_ALL_SERVICES: 1474 wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request " 1475 "for all services"); 1476 if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) && 1477 dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { 1478 wpa_printf(MSG_DEBUG, "P2P: No service " 1479 "discovery protocols available"); 1480 wpas_sd_add_proto_not_avail( 1481 resp, P2P_SERV_ALL_SERVICES, 1482 srv_trans_id); 1483 break; 1484 } 1485 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); 1486 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); 1487 break; 1488 case P2P_SERV_BONJOUR: 1489 wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id, 1490 pos, tlv_end - pos); 1491 break; 1492 case P2P_SERV_UPNP: 1493 wpas_sd_req_upnp(wpa_s, resp, srv_trans_id, 1494 pos, tlv_end - pos); 1495 break; 1496 default: 1497 wpa_printf(MSG_DEBUG, "P2P: Unavailable service " 1498 "protocol %u", srv_proto); 1499 wpas_sd_add_proto_not_avail(resp, srv_proto, 1500 srv_trans_id); 1501 break; 1502 } 1503 1504 pos = tlv_end; 1505 } 1506 1507 done: 1508 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, 1509 update_indic, tlvs, tlvs_len); 1510 1511 wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp); 1512 1513 wpabuf_free(resp); 1514 } 1515 1516 1517 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic, 1518 const u8 *tlvs, size_t tlvs_len) 1519 { 1520 struct wpa_supplicant *wpa_s = ctx; 1521 const u8 *pos = tlvs; 1522 const u8 *end = tlvs + tlvs_len; 1523 const u8 *tlv_end; 1524 u16 slen; 1525 size_t buf_len; 1526 char *buf; 1527 1528 wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs", 1529 tlvs, tlvs_len); 1530 if (tlvs_len > 1500) { 1531 /* TODO: better way for handling this */ 1532 wpa_msg_ctrl(wpa_s, MSG_INFO, 1533 P2P_EVENT_SERV_DISC_RESP MACSTR 1534 " %u <long response: %u bytes>", 1535 MAC2STR(sa), update_indic, 1536 (unsigned int) tlvs_len); 1537 } else { 1538 buf_len = 2 * tlvs_len + 1; 1539 buf = os_malloc(buf_len); 1540 if (buf) { 1541 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); 1542 wpa_msg_ctrl(wpa_s, MSG_INFO, 1543 P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s", 1544 MAC2STR(sa), update_indic, buf); 1545 os_free(buf); 1546 } 1547 } 1548 1549 while (pos < end) { 1550 u8 srv_proto, srv_trans_id, status; 1551 1552 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV"); 1553 slen = WPA_GET_LE16(pos); 1554 pos += 2; 1555 if (pos + slen > end || slen < 3) { 1556 wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data " 1557 "length"); 1558 return; 1559 } 1560 tlv_end = pos + slen; 1561 1562 srv_proto = *pos++; 1563 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", 1564 srv_proto); 1565 srv_trans_id = *pos++; 1566 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", 1567 srv_trans_id); 1568 status = *pos++; 1569 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u", 1570 status); 1571 1572 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data", 1573 pos, tlv_end - pos); 1574 1575 pos = tlv_end; 1576 } 1577 1578 wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len); 1579 } 1580 1581 1582 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst, 1583 const struct wpabuf *tlvs) 1584 { 1585 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1586 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs); 1587 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1588 return 0; 1589 return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs); 1590 } 1591 1592 1593 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst, 1594 u8 version, const char *query) 1595 { 1596 struct wpabuf *tlvs; 1597 u64 ret; 1598 1599 tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query)); 1600 if (tlvs == NULL) 1601 return 0; 1602 wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query)); 1603 wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */ 1604 wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */ 1605 wpabuf_put_u8(tlvs, version); 1606 wpabuf_put_str(tlvs, query); 1607 ret = wpas_p2p_sd_request(wpa_s, dst, tlvs); 1608 wpabuf_free(tlvs); 1609 return ret; 1610 } 1611 1612 1613 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req) 1614 { 1615 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 1616 return wpa_drv_p2p_sd_cancel_request(wpa_s, req); 1617 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1618 return -1; 1619 return p2p_sd_cancel_request(wpa_s->global->p2p, 1620 (void *) (uintptr_t) req); 1621 } 1622 1623 1624 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq, 1625 const u8 *dst, u8 dialog_token, 1626 const struct wpabuf *resp_tlvs) 1627 { 1628 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 1629 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token, 1630 resp_tlvs); 1631 return; 1632 } 1633 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 1634 return; 1635 p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token, 1636 resp_tlvs); 1637 } 1638 1639 1640 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s) 1641 { 1642 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 1643 wpa_drv_p2p_service_update(wpa_s); 1644 return; 1645 } 1646 if (wpa_s->global->p2p) 1647 p2p_sd_service_update(wpa_s->global->p2p); 1648 } 1649 1650 1651 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv) 1652 { 1653 dl_list_del(&bsrv->list); 1654 wpabuf_free(bsrv->query); 1655 wpabuf_free(bsrv->resp); 1656 os_free(bsrv); 1657 } 1658 1659 1660 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv) 1661 { 1662 dl_list_del(&usrv->list); 1663 os_free(usrv->service); 1664 os_free(usrv); 1665 } 1666 1667 1668 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s) 1669 { 1670 struct p2p_srv_bonjour *bsrv, *bn; 1671 struct p2p_srv_upnp *usrv, *un; 1672 1673 dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour, 1674 struct p2p_srv_bonjour, list) 1675 wpas_p2p_srv_bonjour_free(bsrv); 1676 1677 dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp, 1678 struct p2p_srv_upnp, list) 1679 wpas_p2p_srv_upnp_free(usrv); 1680 1681 wpas_p2p_sd_service_update(wpa_s); 1682 } 1683 1684 1685 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s, 1686 struct wpabuf *query, struct wpabuf *resp) 1687 { 1688 struct p2p_srv_bonjour *bsrv; 1689 1690 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); 1691 if (bsrv) { 1692 wpabuf_free(query); 1693 wpabuf_free(bsrv->resp); 1694 bsrv->resp = resp; 1695 return 0; 1696 } 1697 1698 bsrv = os_zalloc(sizeof(*bsrv)); 1699 if (bsrv == NULL) 1700 return -1; 1701 bsrv->query = query; 1702 bsrv->resp = resp; 1703 dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list); 1704 1705 wpas_p2p_sd_service_update(wpa_s); 1706 return 0; 1707 } 1708 1709 1710 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s, 1711 const struct wpabuf *query) 1712 { 1713 struct p2p_srv_bonjour *bsrv; 1714 1715 bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); 1716 if (bsrv == NULL) 1717 return -1; 1718 wpas_p2p_srv_bonjour_free(bsrv); 1719 wpas_p2p_sd_service_update(wpa_s); 1720 return 0; 1721 } 1722 1723 1724 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version, 1725 const char *service) 1726 { 1727 struct p2p_srv_upnp *usrv; 1728 1729 if (wpas_p2p_service_get_upnp(wpa_s, version, service)) 1730 return 0; /* Already listed */ 1731 usrv = os_zalloc(sizeof(*usrv)); 1732 if (usrv == NULL) 1733 return -1; 1734 usrv->version = version; 1735 usrv->service = os_strdup(service); 1736 if (usrv->service == NULL) { 1737 os_free(usrv); 1738 return -1; 1739 } 1740 dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list); 1741 1742 wpas_p2p_sd_service_update(wpa_s); 1743 return 0; 1744 } 1745 1746 1747 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version, 1748 const char *service) 1749 { 1750 struct p2p_srv_upnp *usrv; 1751 1752 usrv = wpas_p2p_service_get_upnp(wpa_s, version, service); 1753 if (usrv == NULL) 1754 return -1; 1755 wpas_p2p_srv_upnp_free(usrv); 1756 wpas_p2p_sd_service_update(wpa_s); 1757 return 0; 1758 } 1759 1760 1761 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, 1762 const u8 *peer, const char *params, 1763 unsigned int generated_pin) 1764 { 1765 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s", 1766 MAC2STR(peer), generated_pin, params); 1767 } 1768 1769 1770 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, 1771 const u8 *peer, const char *params) 1772 { 1773 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s", 1774 MAC2STR(peer), params); 1775 } 1776 1777 1778 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, 1779 const u8 *dev_addr, const u8 *pri_dev_type, 1780 const char *dev_name, u16 supp_config_methods, 1781 u8 dev_capab, u8 group_capab, const u8 *group_id, 1782 size_t group_id_len) 1783 { 1784 struct wpa_supplicant *wpa_s = ctx; 1785 char devtype[WPS_DEV_TYPE_BUFSIZE]; 1786 char params[300]; 1787 u8 empty_dev_type[8]; 1788 unsigned int generated_pin = 0; 1789 struct wpa_supplicant *group = NULL; 1790 1791 if (group_id) { 1792 for (group = wpa_s->global->ifaces; group; group = group->next) 1793 { 1794 struct wpa_ssid *s = group->current_ssid; 1795 if (s != NULL && 1796 s->mode == WPAS_MODE_P2P_GO && 1797 group_id_len - ETH_ALEN == s->ssid_len && 1798 os_memcmp(group_id + ETH_ALEN, s->ssid, 1799 s->ssid_len) == 0) 1800 break; 1801 } 1802 } 1803 1804 if (pri_dev_type == NULL) { 1805 os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); 1806 pri_dev_type = empty_dev_type; 1807 } 1808 os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR 1809 " pri_dev_type=%s name='%s' config_methods=0x%x " 1810 "dev_capab=0x%x group_capab=0x%x%s%s", 1811 MAC2STR(dev_addr), 1812 wps_dev_type_bin2str(pri_dev_type, devtype, 1813 sizeof(devtype)), 1814 dev_name, supp_config_methods, dev_capab, group_capab, 1815 group ? " group=" : "", 1816 group ? group->ifname : ""); 1817 params[sizeof(params) - 1] = '\0'; 1818 1819 if (config_methods & WPS_CONFIG_DISPLAY) { 1820 generated_pin = wps_generate_pin(); 1821 wpas_prov_disc_local_display(wpa_s, peer, params, 1822 generated_pin); 1823 } else if (config_methods & WPS_CONFIG_KEYPAD) 1824 wpas_prov_disc_local_keypad(wpa_s, peer, params); 1825 else if (config_methods & WPS_CONFIG_PUSHBUTTON) 1826 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR 1827 "%s", MAC2STR(peer), params); 1828 1829 wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, 1830 P2P_PROV_DISC_SUCCESS, 1831 config_methods, generated_pin); 1832 } 1833 1834 1835 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) 1836 { 1837 struct wpa_supplicant *wpa_s = ctx; 1838 unsigned int generated_pin = 0; 1839 1840 if (wpa_s->pending_pd_before_join && 1841 (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || 1842 os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { 1843 wpa_s->pending_pd_before_join = 0; 1844 wpa_printf(MSG_DEBUG, "P2P: Starting pending " 1845 "join-existing-group operation"); 1846 wpas_p2p_join_start(wpa_s); 1847 return; 1848 } 1849 1850 if (config_methods & WPS_CONFIG_DISPLAY) 1851 wpas_prov_disc_local_keypad(wpa_s, peer, ""); 1852 else if (config_methods & WPS_CONFIG_KEYPAD) { 1853 generated_pin = wps_generate_pin(); 1854 wpas_prov_disc_local_display(wpa_s, peer, "", generated_pin); 1855 } else if (config_methods & WPS_CONFIG_PUSHBUTTON) 1856 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR, 1857 MAC2STR(peer)); 1858 1859 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 1860 P2P_PROV_DISC_SUCCESS, 1861 config_methods, generated_pin); 1862 } 1863 1864 1865 static void wpas_prov_disc_fail(void *ctx, const u8 *peer, 1866 enum p2p_prov_disc_status status) 1867 { 1868 struct wpa_supplicant *wpa_s = ctx; 1869 1870 wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, 1871 status, 0, 0); 1872 } 1873 1874 1875 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, 1876 const u8 *go_dev_addr, const u8 *ssid, 1877 size_t ssid_len, int *go, u8 *group_bssid, 1878 int *force_freq, int persistent_group) 1879 { 1880 struct wpa_supplicant *wpa_s = ctx; 1881 struct wpa_ssid *s; 1882 u8 cur_bssid[ETH_ALEN]; 1883 int res; 1884 struct wpa_supplicant *grp; 1885 1886 if (!persistent_group) { 1887 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 1888 " to join an active group", MAC2STR(sa)); 1889 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && 1890 (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) 1891 == 0 || 1892 os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { 1893 wpa_printf(MSG_DEBUG, "P2P: Accept previously " 1894 "authorized invitation"); 1895 goto accept_inv; 1896 } 1897 /* 1898 * Do not accept the invitation automatically; notify user and 1899 * request approval. 1900 */ 1901 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 1902 } 1903 1904 grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); 1905 if (grp) { 1906 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " 1907 "running persistent group"); 1908 if (*go) 1909 os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); 1910 goto accept_inv; 1911 } 1912 1913 if (!wpa_s->conf->persistent_reconnect) 1914 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; 1915 1916 for (s = wpa_s->conf->ssid; s; s = s->next) { 1917 if (s->disabled == 2 && 1918 os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && 1919 s->ssid_len == ssid_len && 1920 os_memcmp(ssid, s->ssid, ssid_len) == 0) 1921 break; 1922 } 1923 1924 if (!s) { 1925 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR 1926 " requested reinvocation of an unknown group", 1927 MAC2STR(sa)); 1928 return P2P_SC_FAIL_UNKNOWN_GROUP; 1929 } 1930 1931 if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { 1932 *go = 1; 1933 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { 1934 wpa_printf(MSG_DEBUG, "P2P: The only available " 1935 "interface is already in use - reject " 1936 "invitation"); 1937 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 1938 } 1939 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); 1940 } else if (s->mode == WPAS_MODE_P2P_GO) { 1941 *go = 1; 1942 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) 1943 { 1944 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 1945 "interface address for the group"); 1946 return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; 1947 } 1948 os_memcpy(group_bssid, wpa_s->pending_interface_addr, 1949 ETH_ALEN); 1950 } 1951 1952 accept_inv: 1953 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 && 1954 wpa_s->assoc_freq) { 1955 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 1956 "the channel we are already using"); 1957 *force_freq = wpa_s->assoc_freq; 1958 } 1959 1960 res = wpa_drv_shared_freq(wpa_s); 1961 if (res > 0) { 1962 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " 1963 "with the channel we are already using on a " 1964 "shared interface"); 1965 *force_freq = res; 1966 } 1967 1968 return P2P_SC_SUCCESS; 1969 } 1970 1971 1972 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, 1973 const u8 *ssid, size_t ssid_len, 1974 const u8 *go_dev_addr, u8 status, 1975 int op_freq) 1976 { 1977 struct wpa_supplicant *wpa_s = ctx; 1978 struct wpa_ssid *s; 1979 1980 for (s = wpa_s->conf->ssid; s; s = s->next) { 1981 if (s->disabled == 2 && 1982 s->ssid_len == ssid_len && 1983 os_memcmp(ssid, s->ssid, ssid_len) == 0) 1984 break; 1985 } 1986 1987 if (status == P2P_SC_SUCCESS) { 1988 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 1989 " was accepted; op_freq=%d MHz", 1990 MAC2STR(sa), op_freq); 1991 if (s) { 1992 wpas_p2p_group_add_persistent( 1993 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0); 1994 } else if (bssid) { 1995 wpas_p2p_join(wpa_s, bssid, go_dev_addr, 1996 wpa_s->p2p_wps_method); 1997 } 1998 return; 1999 } 2000 2001 if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { 2002 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR 2003 " was rejected (status %u)", MAC2STR(sa), status); 2004 return; 2005 } 2006 2007 if (!s) { 2008 if (bssid) { 2009 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2010 "sa=" MACSTR " go_dev_addr=" MACSTR 2011 " bssid=" MACSTR " unknown-network", 2012 MAC2STR(sa), MAC2STR(go_dev_addr), 2013 MAC2STR(bssid)); 2014 } else { 2015 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED 2016 "sa=" MACSTR " go_dev_addr=" MACSTR 2017 " unknown-network", 2018 MAC2STR(sa), MAC2STR(go_dev_addr)); 2019 } 2020 return; 2021 } 2022 2023 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR 2024 " persistent=%d", MAC2STR(sa), s->id); 2025 } 2026 2027 2028 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid) 2029 { 2030 struct wpa_supplicant *wpa_s = ctx; 2031 struct wpa_ssid *ssid; 2032 2033 if (bssid) { 2034 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2035 "status=%d " MACSTR, 2036 status, MAC2STR(bssid)); 2037 } else { 2038 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT 2039 "status=%d ", status); 2040 } 2041 wpas_notify_p2p_invitation_result(wpa_s, status, bssid); 2042 2043 if (wpa_s->pending_invite_ssid_id == -1) 2044 return; /* Invitation to active group */ 2045 2046 if (status != P2P_SC_SUCCESS) { 2047 wpas_p2p_remove_pending_group_interface(wpa_s); 2048 return; 2049 } 2050 2051 ssid = wpa_config_get_network(wpa_s->conf, 2052 wpa_s->pending_invite_ssid_id); 2053 if (ssid == NULL) { 2054 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " 2055 "data matching with invitation"); 2056 return; 2057 } 2058 2059 wpas_p2p_group_add_persistent(wpa_s, ssid, 2060 ssid->mode == WPAS_MODE_P2P_GO, 0); 2061 } 2062 2063 2064 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, 2065 struct p2p_channels *chan) 2066 { 2067 int i, cla = 0; 2068 2069 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " 2070 "band"); 2071 2072 /* Operating class 81 - 2.4 GHz band channels 1..13 */ 2073 chan->reg_class[cla].reg_class = 81; 2074 chan->reg_class[cla].channels = 11; 2075 for (i = 0; i < 11; i++) 2076 chan->reg_class[cla].channel[i] = i + 1; 2077 cla++; 2078 2079 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " 2080 "band"); 2081 2082 /* Operating class 115 - 5 GHz, channels 36-48 */ 2083 chan->reg_class[cla].reg_class = 115; 2084 chan->reg_class[cla].channels = 4; 2085 chan->reg_class[cla].channel[0] = 36; 2086 chan->reg_class[cla].channel[1] = 40; 2087 chan->reg_class[cla].channel[2] = 44; 2088 chan->reg_class[cla].channel[3] = 48; 2089 cla++; 2090 2091 wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " 2092 "band"); 2093 2094 /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ 2095 chan->reg_class[cla].reg_class = 124; 2096 chan->reg_class[cla].channels = 4; 2097 chan->reg_class[cla].channel[0] = 149; 2098 chan->reg_class[cla].channel[1] = 153; 2099 chan->reg_class[cla].channel[2] = 157; 2100 chan->reg_class[cla].channel[3] = 161; 2101 cla++; 2102 2103 chan->reg_classes = cla; 2104 return 0; 2105 } 2106 2107 2108 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 2109 u16 num_modes, 2110 enum hostapd_hw_mode mode) 2111 { 2112 u16 i; 2113 2114 for (i = 0; i < num_modes; i++) { 2115 if (modes[i].mode == mode) 2116 return &modes[i]; 2117 } 2118 2119 return NULL; 2120 } 2121 2122 2123 static int has_channel(struct hostapd_hw_modes *mode, u8 chan, int *flags) 2124 { 2125 int i; 2126 2127 for (i = 0; i < mode->num_channels; i++) { 2128 if (mode->channels[i].chan == chan) { 2129 if (flags) 2130 *flags = mode->channels[i].flag; 2131 return !(mode->channels[i].flag & 2132 (HOSTAPD_CHAN_DISABLED | 2133 HOSTAPD_CHAN_PASSIVE_SCAN | 2134 HOSTAPD_CHAN_NO_IBSS | 2135 HOSTAPD_CHAN_RADAR)); 2136 } 2137 } 2138 2139 return 0; 2140 } 2141 2142 2143 struct p2p_oper_class_map { 2144 enum hostapd_hw_mode mode; 2145 u8 op_class; 2146 u8 min_chan; 2147 u8 max_chan; 2148 u8 inc; 2149 enum { BW20, BW40PLUS, BW40MINUS } bw; 2150 }; 2151 2152 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, 2153 struct p2p_channels *chan) 2154 { 2155 struct hostapd_hw_modes *mode; 2156 int cla, op; 2157 struct p2p_oper_class_map op_class[] = { 2158 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 }, 2159 { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 }, 2160 #if 0 /* Do not enable HT40 on 2 GHz for now */ 2161 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS }, 2162 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS }, 2163 #endif 2164 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 }, 2165 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 }, 2166 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS }, 2167 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS }, 2168 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS }, 2169 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS }, 2170 { -1, 0, 0, 0, 0, BW20 } 2171 }; 2172 2173 if (wpa_s->hw.modes == NULL) { 2174 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " 2175 "of all supported channels; assume dualband " 2176 "support"); 2177 return wpas_p2p_default_channels(wpa_s, chan); 2178 } 2179 2180 cla = 0; 2181 2182 for (op = 0; op_class[op].op_class; op++) { 2183 struct p2p_oper_class_map *o = &op_class[op]; 2184 u8 ch; 2185 struct p2p_reg_class *reg = NULL; 2186 2187 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); 2188 if (mode == NULL) 2189 continue; 2190 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { 2191 int flag; 2192 if (!has_channel(mode, ch, &flag)) 2193 continue; 2194 if (o->bw == BW40MINUS && 2195 (!(flag & HOSTAPD_CHAN_HT40MINUS) || 2196 !has_channel(mode, ch - 4, NULL))) 2197 continue; 2198 if (o->bw == BW40PLUS && 2199 (!(flag & HOSTAPD_CHAN_HT40PLUS) || 2200 !has_channel(mode, ch + 4, NULL))) 2201 continue; 2202 if (reg == NULL) { 2203 wpa_printf(MSG_DEBUG, "P2P: Add operating " 2204 "class %u", o->op_class); 2205 reg = &chan->reg_class[cla]; 2206 cla++; 2207 reg->reg_class = o->op_class; 2208 } 2209 reg->channel[reg->channels] = ch; 2210 reg->channels++; 2211 } 2212 if (reg) { 2213 wpa_hexdump(MSG_DEBUG, "P2P: Channels", 2214 reg->channel, reg->channels); 2215 } 2216 } 2217 2218 chan->reg_classes = cla; 2219 2220 return 0; 2221 } 2222 2223 2224 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, 2225 size_t buf_len) 2226 { 2227 struct wpa_supplicant *wpa_s = ctx; 2228 2229 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2230 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) 2231 break; 2232 } 2233 if (wpa_s == NULL) 2234 return -1; 2235 2236 return wpa_drv_get_noa(wpa_s, buf, buf_len); 2237 } 2238 2239 2240 static int wpas_go_connected(void *ctx, const u8 *dev_addr) 2241 { 2242 struct wpa_supplicant *wpa_s = ctx; 2243 2244 for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2245 struct wpa_ssid *ssid = wpa_s->current_ssid; 2246 if (ssid == NULL) 2247 continue; 2248 if (ssid->mode != WPAS_MODE_INFRA) 2249 continue; 2250 if (wpa_s->wpa_state != WPA_COMPLETED && 2251 wpa_s->wpa_state != WPA_GROUP_HANDSHAKE) 2252 continue; 2253 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0) 2254 return 1; 2255 } 2256 2257 return 0; 2258 } 2259 2260 2261 /** 2262 * wpas_p2p_init - Initialize P2P module for %wpa_supplicant 2263 * @global: Pointer to global data from wpa_supplicant_init() 2264 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2265 * Returns: 0 on success, -1 on failure 2266 */ 2267 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) 2268 { 2269 struct p2p_config p2p; 2270 unsigned int r; 2271 int i; 2272 2273 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 2274 return 0; 2275 2276 if (global->p2p) 2277 return 0; 2278 2279 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2280 struct p2p_params params; 2281 2282 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management"); 2283 os_memset(¶ms, 0, sizeof(params)); 2284 params.dev_name = wpa_s->conf->device_name; 2285 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type, 2286 WPS_DEV_TYPE_LEN); 2287 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2288 os_memcpy(params.sec_dev_type, 2289 wpa_s->conf->sec_device_type, 2290 params.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2291 2292 if (wpa_drv_p2p_set_params(wpa_s, ¶ms) < 0) 2293 return -1; 2294 2295 return 0; 2296 } 2297 2298 os_memset(&p2p, 0, sizeof(p2p)); 2299 p2p.msg_ctx = wpa_s; 2300 p2p.cb_ctx = wpa_s; 2301 p2p.p2p_scan = wpas_p2p_scan; 2302 p2p.send_action = wpas_send_action; 2303 p2p.send_action_done = wpas_send_action_done; 2304 p2p.go_neg_completed = wpas_go_neg_completed; 2305 p2p.go_neg_req_rx = wpas_go_neg_req_rx; 2306 p2p.dev_found = wpas_dev_found; 2307 p2p.dev_lost = wpas_dev_lost; 2308 p2p.start_listen = wpas_start_listen; 2309 p2p.stop_listen = wpas_stop_listen; 2310 p2p.send_probe_resp = wpas_send_probe_resp; 2311 p2p.sd_request = wpas_sd_request; 2312 p2p.sd_response = wpas_sd_response; 2313 p2p.prov_disc_req = wpas_prov_disc_req; 2314 p2p.prov_disc_resp = wpas_prov_disc_resp; 2315 p2p.prov_disc_fail = wpas_prov_disc_fail; 2316 p2p.invitation_process = wpas_invitation_process; 2317 p2p.invitation_received = wpas_invitation_received; 2318 p2p.invitation_result = wpas_invitation_result; 2319 p2p.get_noa = wpas_get_noa; 2320 p2p.go_connected = wpas_go_connected; 2321 2322 os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); 2323 os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); 2324 p2p.dev_name = wpa_s->conf->device_name; 2325 p2p.manufacturer = wpa_s->conf->manufacturer; 2326 p2p.model_name = wpa_s->conf->model_name; 2327 p2p.model_number = wpa_s->conf->model_number; 2328 p2p.serial_number = wpa_s->conf->serial_number; 2329 if (wpa_s->wps) { 2330 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); 2331 p2p.config_methods = wpa_s->wps->config_methods; 2332 } 2333 2334 if (wpa_s->conf->p2p_listen_reg_class && 2335 wpa_s->conf->p2p_listen_channel) { 2336 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; 2337 p2p.channel = wpa_s->conf->p2p_listen_channel; 2338 } else { 2339 p2p.reg_class = 81; 2340 /* 2341 * Pick one of the social channels randomly as the listen 2342 * channel. 2343 */ 2344 os_get_random((u8 *) &r, sizeof(r)); 2345 p2p.channel = 1 + (r % 3) * 5; 2346 } 2347 wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel); 2348 2349 if (wpa_s->conf->p2p_oper_reg_class && 2350 wpa_s->conf->p2p_oper_channel) { 2351 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; 2352 p2p.op_channel = wpa_s->conf->p2p_oper_channel; 2353 p2p.cfg_op_channel = 1; 2354 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " 2355 "%d:%d", p2p.op_reg_class, p2p.op_channel); 2356 2357 } else { 2358 p2p.op_reg_class = 81; 2359 /* 2360 * Use random operation channel from (1, 6, 11) if no other 2361 * preference is indicated. 2362 */ 2363 os_get_random((u8 *) &r, sizeof(r)); 2364 p2p.op_channel = 1 + (r % 3) * 5; 2365 p2p.cfg_op_channel = 0; 2366 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " 2367 "%d:%d", p2p.op_reg_class, p2p.op_channel); 2368 } 2369 if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 2370 os_memcpy(p2p.country, wpa_s->conf->country, 2); 2371 p2p.country[2] = 0x04; 2372 } else 2373 os_memcpy(p2p.country, "XX\x04", 3); 2374 2375 if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) { 2376 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported " 2377 "channel list"); 2378 return -1; 2379 } 2380 2381 os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, 2382 WPS_DEV_TYPE_LEN); 2383 2384 p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; 2385 os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, 2386 p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); 2387 2388 p2p.concurrent_operations = !!(wpa_s->drv_flags & 2389 WPA_DRIVER_FLAGS_P2P_CONCURRENT); 2390 2391 p2p.max_peers = 100; 2392 2393 if (wpa_s->conf->p2p_ssid_postfix) { 2394 p2p.ssid_postfix_len = 2395 os_strlen(wpa_s->conf->p2p_ssid_postfix); 2396 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) 2397 p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); 2398 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, 2399 p2p.ssid_postfix_len); 2400 } 2401 2402 p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; 2403 2404 global->p2p = p2p_init(&p2p); 2405 if (global->p2p == NULL) 2406 return -1; 2407 2408 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 2409 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 2410 continue; 2411 p2p_add_wps_vendor_extension( 2412 global->p2p, wpa_s->conf->wps_vendor_ext[i]); 2413 } 2414 2415 return 0; 2416 } 2417 2418 2419 /** 2420 * wpas_p2p_deinit - Deinitialize per-interface P2P data 2421 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2422 * 2423 * This function deinitialize per-interface P2P data. 2424 */ 2425 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) 2426 { 2427 if (wpa_s->driver && wpa_s->drv_priv) 2428 wpa_drv_probe_req_report(wpa_s, 0); 2429 2430 if (wpa_s->go_params) { 2431 /* Clear any stored provisioning info */ 2432 p2p_clear_provisioning_info( 2433 wpa_s->global->p2p, 2434 wpa_s->go_params->peer_interface_addr); 2435 } 2436 2437 os_free(wpa_s->go_params); 2438 wpa_s->go_params = NULL; 2439 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2440 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2441 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL); 2442 wpa_s->p2p_long_listen = 0; 2443 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 2444 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 2445 wpas_p2p_remove_pending_group_interface(wpa_s); 2446 2447 /* TODO: remove group interface from the driver if this wpa_s instance 2448 * is on top of a P2P group interface */ 2449 } 2450 2451 2452 /** 2453 * wpas_p2p_deinit_global - Deinitialize global P2P module 2454 * @global: Pointer to global data from wpa_supplicant_init() 2455 * 2456 * This function deinitializes the global (per device) P2P module. 2457 */ 2458 void wpas_p2p_deinit_global(struct wpa_global *global) 2459 { 2460 struct wpa_supplicant *wpa_s, *tmp; 2461 char *ifname; 2462 2463 if (global->p2p == NULL) 2464 return; 2465 2466 /* Remove remaining P2P group interfaces */ 2467 wpa_s = global->ifaces; 2468 if (wpa_s) 2469 wpas_p2p_service_flush(wpa_s); 2470 while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) 2471 wpa_s = wpa_s->next; 2472 while (wpa_s) { 2473 enum wpa_driver_if_type type; 2474 tmp = global->ifaces; 2475 while (tmp && 2476 (tmp == wpa_s || 2477 tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { 2478 tmp = tmp->next; 2479 } 2480 if (tmp == NULL) 2481 break; 2482 ifname = os_strdup(tmp->ifname); 2483 type = wpas_p2p_if_type(tmp->p2p_group_interface); 2484 wpa_supplicant_remove_iface(global, tmp, 0); 2485 if (ifname) 2486 wpa_drv_if_remove(wpa_s, type, ifname); 2487 os_free(ifname); 2488 } 2489 2490 /* 2491 * Deinit GO data on any possibly remaining interface (if main 2492 * interface is used as GO). 2493 */ 2494 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 2495 if (wpa_s->ap_iface) 2496 wpas_p2p_group_deinit(wpa_s); 2497 } 2498 2499 p2p_deinit(global->p2p); 2500 global->p2p = NULL; 2501 } 2502 2503 2504 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) 2505 { 2506 if (wpa_s->drv_flags & 2507 (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | 2508 WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) 2509 return 1; /* P2P group requires a new interface in every case 2510 */ 2511 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) 2512 return 0; /* driver does not support concurrent operations */ 2513 if (wpa_s->global->ifaces->next) 2514 return 1; /* more that one interface already in use */ 2515 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) 2516 return 1; /* this interface is already in use */ 2517 return 0; 2518 } 2519 2520 2521 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, 2522 const u8 *peer_addr, 2523 enum p2p_wps_method wps_method, 2524 int go_intent, const u8 *own_interface_addr, 2525 unsigned int force_freq, int persistent_group) 2526 { 2527 if (persistent_group && wpa_s->conf->persistent_reconnect) 2528 persistent_group = 2; 2529 2530 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 2531 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method, 2532 go_intent, own_interface_addr, 2533 force_freq, persistent_group); 2534 } 2535 2536 return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, 2537 go_intent, own_interface_addr, force_freq, 2538 persistent_group); 2539 } 2540 2541 2542 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, 2543 const u8 *peer_addr, 2544 enum p2p_wps_method wps_method, 2545 int go_intent, const u8 *own_interface_addr, 2546 unsigned int force_freq, int persistent_group) 2547 { 2548 if (persistent_group && wpa_s->conf->persistent_reconnect) 2549 persistent_group = 2; 2550 2551 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 2552 return -1; 2553 2554 return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, 2555 go_intent, own_interface_addr, force_freq, 2556 persistent_group); 2557 } 2558 2559 2560 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) 2561 { 2562 wpa_s->p2p_join_scan_count++; 2563 wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", 2564 wpa_s->p2p_join_scan_count); 2565 if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { 2566 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR 2567 " for join operationg - stop join attempt", 2568 MAC2STR(wpa_s->pending_join_iface_addr)); 2569 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2570 wpa_msg(wpa_s->parent, MSG_INFO, 2571 P2P_EVENT_GROUP_FORMATION_FAILURE); 2572 } 2573 } 2574 2575 2576 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx) 2577 { 2578 struct wpa_supplicant *wpa_s = eloop_ctx; 2579 if (!wpa_s->pending_pd_before_join) 2580 return; 2581 /* 2582 * Provision Discovery Response may have been lost - try to connect 2583 * anyway since we do not need any information from this PD. 2584 */ 2585 wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - " 2586 "try to connect anyway"); 2587 wpas_p2p_join_start(wpa_s); 2588 } 2589 2590 2591 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, 2592 struct wpa_scan_results *scan_res) 2593 { 2594 struct wpa_bss *bss; 2595 int freq; 2596 u8 iface_addr[ETH_ALEN]; 2597 #ifdef ANDROID_P2P 2598 int shared_freq = 0; 2599 #endif 2600 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2601 2602 if (wpa_s->global->p2p_disabled) 2603 return; 2604 2605 wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for join", 2606 scan_res ? (int) scan_res->num : -1); 2607 2608 if (scan_res) 2609 wpas_p2p_scan_res_handler(wpa_s, scan_res); 2610 2611 freq = p2p_get_oper_freq(wpa_s->global->p2p, 2612 wpa_s->pending_join_iface_addr); 2613 if (freq < 0 && 2614 p2p_get_interface_addr(wpa_s->global->p2p, 2615 wpa_s->pending_join_dev_addr, 2616 iface_addr) == 0 && 2617 os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0) 2618 { 2619 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " 2620 "address for join from " MACSTR " to " MACSTR 2621 " based on newly discovered P2P peer entry", 2622 MAC2STR(wpa_s->pending_join_iface_addr), 2623 MAC2STR(iface_addr)); 2624 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, 2625 ETH_ALEN); 2626 2627 freq = p2p_get_oper_freq(wpa_s->global->p2p, 2628 wpa_s->pending_join_iface_addr); 2629 } 2630 if (freq >= 0) { 2631 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 2632 "from P2P peer table: %d MHz", freq); 2633 } 2634 2635 #ifdef ANDROID_P2P 2636 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) && 2637 ((shared_freq = wpa_drv_shared_freq(wpa_s)) > 0) && (shared_freq != freq)) { 2638 wpa_msg(wpa_s->parent, MSG_INFO, 2639 P2P_EVENT_GROUP_FORMATION_FAILURE "reason=FREQ_CONFLICT"); 2640 return; 2641 } 2642 #endif 2643 2644 bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr); 2645 if (bss) { 2646 freq = bss->freq; 2647 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " 2648 "from BSS table: %d MHz", freq); 2649 } 2650 if (freq > 0) { 2651 u16 method; 2652 2653 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " 2654 "prior to joining an existing group (GO " MACSTR 2655 " freq=%u MHz)", 2656 MAC2STR(wpa_s->pending_join_dev_addr), freq); 2657 wpa_s->pending_pd_before_join = 1; 2658 2659 switch (wpa_s->pending_join_wps_method) { 2660 case WPS_PIN_DISPLAY: 2661 method = WPS_CONFIG_KEYPAD; 2662 break; 2663 case WPS_PIN_KEYPAD: 2664 method = WPS_CONFIG_DISPLAY; 2665 break; 2666 case WPS_PBC: 2667 method = WPS_CONFIG_PUSHBUTTON; 2668 break; 2669 default: 2670 method = 0; 2671 break; 2672 } 2673 2674 if ((p2p_get_provisioning_info(wpa_s->global->p2p, 2675 wpa_s->pending_join_dev_addr) == 2676 method)) { 2677 /* 2678 * We have already performed provision discovery for 2679 * joining the group. Proceed directly to join 2680 * operation without duplicated provision discovery. */ 2681 wpa_printf(MSG_DEBUG, "P2P: Provision discovery " 2682 "with " MACSTR " already done - proceed to " 2683 "join", 2684 MAC2STR(wpa_s->pending_join_dev_addr)); 2685 wpa_s->pending_pd_before_join = 0; 2686 goto start; 2687 } 2688 2689 if (p2p_prov_disc_req(wpa_s->global->p2p, 2690 wpa_s->pending_join_dev_addr, method, 1, 2691 freq) < 0) { 2692 wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " 2693 "Discovery Request before joining an " 2694 "existing group"); 2695 wpa_s->pending_pd_before_join = 0; 2696 goto start; 2697 } 2698 2699 /* 2700 * Actual join operation will be started from the Action frame 2701 * TX status callback (if no ACK is received) or when the 2702 * Provision Discovery Response is received. Use a short 2703 * timeout as a backup mechanism should the Provision Discovery 2704 * Response be lost for any reason. 2705 */ 2706 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, 2707 NULL); 2708 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout, 2709 wpa_s, NULL); 2710 return; 2711 } 2712 2713 wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); 2714 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2715 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 2716 wpas_p2p_check_join_scan_limit(wpa_s); 2717 return; 2718 2719 start: 2720 /* Start join operation immediately */ 2721 wpas_p2p_join_start(wpa_s); 2722 } 2723 2724 2725 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) 2726 { 2727 struct wpa_supplicant *wpa_s = eloop_ctx; 2728 int ret; 2729 struct wpa_driver_scan_params params; 2730 struct wpabuf *wps_ie, *ies; 2731 size_t ielen; 2732 2733 os_memset(¶ms, 0, sizeof(params)); 2734 2735 /* P2P Wildcard SSID */ 2736 params.num_ssids = 1; 2737 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; 2738 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; 2739 2740 wpa_s->wps->dev.p2p = 1; 2741 wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid, 2742 WPS_REQ_ENROLLEE, 0, NULL); 2743 if (wps_ie == NULL) { 2744 wpas_p2p_scan_res_join(wpa_s, NULL); 2745 return; 2746 } 2747 2748 ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); 2749 ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); 2750 if (ies == NULL) { 2751 wpabuf_free(wps_ie); 2752 wpas_p2p_scan_res_join(wpa_s, NULL); 2753 return; 2754 } 2755 wpabuf_put_buf(ies, wps_ie); 2756 wpabuf_free(wps_ie); 2757 2758 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 2759 2760 params.p2p_probe = 1; 2761 params.extra_ies = wpabuf_head(ies); 2762 params.extra_ies_len = wpabuf_len(ies); 2763 2764 /* 2765 * Run a scan to update BSS table and start Provision Discovery once 2766 * the new scan results become available. 2767 */ 2768 wpa_s->scan_res_handler = wpas_p2p_scan_res_join; 2769 ret = wpa_drv_scan(wpa_s, ¶ms); 2770 2771 wpabuf_free(ies); 2772 2773 if (ret) { 2774 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " 2775 "try again later"); 2776 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 2777 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); 2778 wpas_p2p_check_join_scan_limit(wpa_s); 2779 } 2780 } 2781 2782 2783 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, 2784 const u8 *dev_addr, enum p2p_wps_method wps_method) 2785 { 2786 wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " 2787 MACSTR " dev " MACSTR ")", 2788 MAC2STR(iface_addr), MAC2STR(dev_addr)); 2789 2790 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); 2791 os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); 2792 wpa_s->pending_join_wps_method = wps_method; 2793 2794 /* Make sure we are not running find during connection establishment */ 2795 wpas_p2p_stop_find(wpa_s); 2796 2797 wpa_s->p2p_join_scan_count = 0; 2798 wpas_p2p_join_scan(wpa_s, NULL); 2799 return 0; 2800 } 2801 2802 2803 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s) 2804 { 2805 struct wpa_supplicant *group; 2806 struct p2p_go_neg_results res; 2807 2808 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL); 2809 group = wpas_p2p_get_group_iface(wpa_s, 0, 0); 2810 if (group == NULL) 2811 return -1; 2812 if (group != wpa_s) { 2813 os_memcpy(group->p2p_pin, wpa_s->p2p_pin, 2814 sizeof(group->p2p_pin)); 2815 group->p2p_wps_method = wpa_s->p2p_wps_method; 2816 } 2817 2818 group->p2p_in_provisioning = 1; 2819 2820 os_memset(&res, 0, sizeof(res)); 2821 os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, 2822 ETH_ALEN); 2823 res.wps_method = wpa_s->pending_join_wps_method; 2824 if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { 2825 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " 2826 "starting client"); 2827 wpa_drv_cancel_remain_on_channel(wpa_s); 2828 wpa_s->off_channel_freq = 0; 2829 wpa_s->roc_waiting_drv_freq = 0; 2830 } 2831 wpas_start_wps_enrollee(group, &res); 2832 2833 /* 2834 * Allow a longer timeout for join-a-running-group than normal 15 2835 * second group formation timeout since the GO may not have authorized 2836 * our connection yet. 2837 */ 2838 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); 2839 eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, 2840 wpa_s, NULL); 2841 2842 return 0; 2843 } 2844 2845 2846 /** 2847 * wpas_p2p_connect - Request P2P Group Formation to be started 2848 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 2849 * @peer_addr: Address of the peer P2P Device 2850 * @pin: PIN to use during provisioning or %NULL to indicate PBC mode 2851 * @persistent_group: Whether to create a persistent group 2852 * @join: Whether to join an existing group (as a client) instead of starting 2853 * Group Owner negotiation; @peer_addr is BSSID in that case 2854 * @auth: Whether to only authorize the connection instead of doing that and 2855 * initiating Group Owner negotiation 2856 * @go_intent: GO Intent or -1 to use default 2857 * @freq: Frequency for the group or 0 for auto-selection 2858 * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified 2859 * failure, -2 on failure due to channel not currently available, 2860 * -3 if forced channel is not supported 2861 */ 2862 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 2863 const char *pin, enum p2p_wps_method wps_method, 2864 int persistent_group, int join, int auth, int go_intent, 2865 int freq) 2866 { 2867 int force_freq = 0, oper_freq = 0; 2868 u8 bssid[ETH_ALEN]; 2869 int ret = 0; 2870 enum wpa_driver_if_type iftype; 2871 const u8 *if_addr; 2872 2873 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 2874 return -1; 2875 2876 if (go_intent < 0) 2877 go_intent = wpa_s->conf->p2p_go_intent; 2878 2879 if (!auth) 2880 wpa_s->p2p_long_listen = 0; 2881 2882 wpa_s->p2p_wps_method = wps_method; 2883 2884 if (pin) 2885 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); 2886 else if (wps_method == WPS_PIN_DISPLAY) { 2887 ret = wps_generate_pin(); 2888 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d", 2889 ret); 2890 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", 2891 wpa_s->p2p_pin); 2892 } else 2893 wpa_s->p2p_pin[0] = '\0'; 2894 2895 if (join) { 2896 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; 2897 if (auth) { 2898 wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " 2899 "connect a running group from " MACSTR, 2900 MAC2STR(peer_addr)); 2901 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); 2902 return ret; 2903 } 2904 os_memcpy(dev_addr, peer_addr, ETH_ALEN); 2905 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, 2906 iface_addr) < 0) { 2907 os_memcpy(iface_addr, peer_addr, ETH_ALEN); 2908 p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, 2909 dev_addr); 2910 } 2911 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method) < 2912 0) 2913 return -1; 2914 return ret; 2915 } 2916 2917 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 2918 wpa_s->assoc_freq) 2919 oper_freq = wpa_s->assoc_freq; 2920 else { 2921 oper_freq = wpa_drv_shared_freq(wpa_s); 2922 if (oper_freq < 0) 2923 oper_freq = 0; 2924 } 2925 2926 if (freq > 0) { 2927 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 2928 wpa_printf(MSG_DEBUG, "P2P: The forced channel " 2929 "(%u MHz) is not supported for P2P uses", 2930 freq); 2931 return -3; 2932 } 2933 2934 if (oper_freq > 0 && freq != oper_freq && 2935 !(wpa_s->drv_flags & 2936 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 2937 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 2938 "on %u MHz while connected on another " 2939 "channel (%u MHz)", freq, oper_freq); 2940 return -2; 2941 } 2942 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 2943 "requested channel (%u MHz)", freq); 2944 force_freq = freq; 2945 } else if (oper_freq > 0 && 2946 !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) { 2947 if (!(wpa_s->drv_flags & 2948 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 2949 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " 2950 "while connected on non-P2P supported " 2951 "channel (%u MHz)", oper_freq); 2952 return -2; 2953 } 2954 wpa_printf(MSG_DEBUG, "P2P: Current operating channel " 2955 "(%u MHz) not available for P2P - try to use " 2956 "another channel", oper_freq); 2957 force_freq = 0; 2958 } else if (oper_freq > 0) { 2959 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " 2960 "channel we are already using (%u MHz) on another " 2961 "interface", oper_freq); 2962 force_freq = oper_freq; 2963 } 2964 2965 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); 2966 2967 if (wpa_s->create_p2p_iface) { 2968 /* Prepare to add a new interface for the group */ 2969 iftype = WPA_IF_P2P_GROUP; 2970 if (go_intent == 15) 2971 iftype = WPA_IF_P2P_GO; 2972 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { 2973 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " 2974 "interface for the group"); 2975 return -1; 2976 } 2977 2978 if_addr = wpa_s->pending_interface_addr; 2979 } else 2980 if_addr = wpa_s->own_addr; 2981 2982 if (auth) { 2983 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, 2984 go_intent, if_addr, 2985 force_freq, persistent_group) < 0) 2986 return -1; 2987 return ret; 2988 } 2989 2990 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, 2991 go_intent, if_addr, force_freq, 2992 persistent_group) < 0) { 2993 if (wpa_s->create_p2p_iface) 2994 wpas_p2p_remove_pending_group_interface(wpa_s); 2995 return -1; 2996 } 2997 return ret; 2998 } 2999 3000 3001 /** 3002 * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start 3003 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3004 * @freq: Frequency of the channel in MHz 3005 * @duration: Duration of the stay on the channel in milliseconds 3006 * 3007 * This callback is called when the driver indicates that it has started the 3008 * requested remain-on-channel duration. 3009 */ 3010 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 3011 unsigned int freq, unsigned int duration) 3012 { 3013 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3014 return; 3015 if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { 3016 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, 3017 wpa_s->pending_listen_duration); 3018 wpa_s->pending_listen_freq = 0; 3019 } 3020 } 3021 3022 3023 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, 3024 unsigned int timeout) 3025 { 3026 /* Limit maximum Listen state time based on driver limitation. */ 3027 if (timeout > wpa_s->max_remain_on_chan) 3028 timeout = wpa_s->max_remain_on_chan; 3029 3030 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3031 return wpa_drv_p2p_listen(wpa_s, timeout); 3032 3033 return p2p_listen(wpa_s->global->p2p, timeout); 3034 } 3035 3036 3037 /** 3038 * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout 3039 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3040 * @freq: Frequency of the channel in MHz 3041 * 3042 * This callback is called when the driver indicates that a remain-on-channel 3043 * operation has been completed, i.e., the duration on the requested channel 3044 * has timed out. 3045 */ 3046 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, 3047 unsigned int freq) 3048 { 3049 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " 3050 "(p2p_long_listen=%d ms pending_action_tx=%p)", 3051 wpa_s->p2p_long_listen, wpa_s->pending_action_tx); 3052 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3053 return; 3054 if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) 3055 return; /* P2P module started a new operation */ 3056 if (wpa_s->pending_action_tx) 3057 return; 3058 if (wpa_s->p2p_long_listen > 0) 3059 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; 3060 if (wpa_s->p2p_long_listen > 0) { 3061 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); 3062 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); 3063 } 3064 } 3065 3066 3067 /** 3068 * wpas_p2p_group_remove - Remove a P2P group 3069 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3070 * @ifname: Network interface name of the group interface or "*" to remove all 3071 * groups 3072 * Returns: 0 on success, -1 on failure 3073 * 3074 * This function is used to remove a P2P group. This can be used to disconnect 3075 * from a group in which the local end is a P2P Client or to end a P2P Group in 3076 * case the local end is the Group Owner. If a virtual network interface was 3077 * created for this group, that interface will be removed. Otherwise, only the 3078 * configured P2P group network will be removed from the interface. 3079 */ 3080 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) 3081 { 3082 struct wpa_global *global = wpa_s->global; 3083 3084 if (os_strcmp(ifname, "*") == 0) { 3085 struct wpa_supplicant *prev; 3086 wpa_s = global->ifaces; 3087 while (wpa_s) { 3088 prev = wpa_s; 3089 wpa_s = wpa_s->next; 3090 wpas_p2p_disconnect(prev); 3091 } 3092 return 0; 3093 } 3094 3095 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3096 if (os_strcmp(wpa_s->ifname, ifname) == 0) 3097 break; 3098 } 3099 3100 return wpas_p2p_disconnect(wpa_s); 3101 } 3102 3103 3104 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, 3105 struct p2p_go_neg_results *params, 3106 int freq) 3107 { 3108 u8 bssid[ETH_ALEN]; 3109 int res; 3110 3111 os_memset(params, 0, sizeof(*params)); 3112 params->role_go = 1; 3113 if (freq) { 3114 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced " 3115 "frequency %d MHz", freq); 3116 params->freq = freq; 3117 } else if (wpa_s->conf->p2p_oper_reg_class == 81 && 3118 wpa_s->conf->p2p_oper_channel >= 1 && 3119 wpa_s->conf->p2p_oper_channel <= 11) { 3120 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; 3121 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 3122 "frequency %d MHz", params->freq); 3123 } else if (wpa_s->conf->p2p_oper_reg_class == 115 || 3124 wpa_s->conf->p2p_oper_reg_class == 124) { 3125 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; 3126 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " 3127 "frequency %d MHz", params->freq); 3128 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3129 wpa_s->best_overall_freq > 0 && 3130 p2p_supported_freq(wpa_s->global->p2p, 3131 wpa_s->best_overall_freq)) { 3132 params->freq = wpa_s->best_overall_freq; 3133 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " 3134 "channel %d MHz", params->freq); 3135 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3136 wpa_s->best_24_freq > 0 && 3137 p2p_supported_freq(wpa_s->global->p2p, 3138 wpa_s->best_24_freq)) { 3139 params->freq = wpa_s->best_24_freq; 3140 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " 3141 "channel %d MHz", params->freq); 3142 } else if (wpa_s->conf->p2p_oper_channel == 0 && 3143 wpa_s->best_5_freq > 0 && 3144 p2p_supported_freq(wpa_s->global->p2p, 3145 wpa_s->best_5_freq)) { 3146 params->freq = wpa_s->best_5_freq; 3147 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " 3148 "channel %d MHz", params->freq); 3149 } else { 3150 params->freq = 2412; 3151 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference " 3152 "known)", params->freq); 3153 } 3154 3155 if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && 3156 wpa_s->assoc_freq && !freq) { 3157 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " 3158 "already using"); 3159 params->freq = wpa_s->assoc_freq; 3160 } 3161 3162 res = wpa_drv_shared_freq(wpa_s); 3163 if (res > 0 && !freq) { 3164 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " 3165 "already using on a shared interface"); 3166 params->freq = res; 3167 } else if (res > 0 && freq != res && 3168 !(wpa_s->drv_flags & 3169 WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { 3170 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz " 3171 "while connected on another channel (%u MHz)", 3172 freq, res); 3173 return -1; 3174 } 3175 3176 return 0; 3177 } 3178 3179 3180 static struct wpa_supplicant * 3181 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, 3182 int go) 3183 { 3184 struct wpa_supplicant *group_wpa_s; 3185 3186 if (!wpas_p2p_create_iface(wpa_s)) 3187 return wpa_s; 3188 3189 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : 3190 WPA_IF_P2P_CLIENT) < 0) 3191 return NULL; 3192 group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); 3193 if (group_wpa_s == NULL) { 3194 wpas_p2p_remove_pending_group_interface(wpa_s); 3195 return NULL; 3196 } 3197 3198 return group_wpa_s; 3199 } 3200 3201 3202 /** 3203 * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner 3204 * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() 3205 * @persistent_group: Whether to create a persistent group 3206 * @freq: Frequency for the group or 0 to indicate no hardcoding 3207 * Returns: 0 on success, -1 on failure 3208 * 3209 * This function creates a new P2P group with the local end as the Group Owner, 3210 * i.e., without using Group Owner Negotiation. 3211 */ 3212 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, 3213 int freq) 3214 { 3215 struct p2p_go_neg_results params; 3216 unsigned int r; 3217 3218 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3219 return -1; 3220 3221 /* Make sure we are not running find during connection establishment */ 3222 wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); 3223 wpas_p2p_stop_find(wpa_s); 3224 3225 if (freq == 2) { 3226 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " 3227 "band"); 3228 if (wpa_s->best_24_freq > 0 && 3229 p2p_supported_freq(wpa_s->global->p2p, 3230 wpa_s->best_24_freq)) { 3231 freq = wpa_s->best_24_freq; 3232 wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " 3233 "channel: %d MHz", freq); 3234 } else { 3235 os_get_random((u8 *) &r, sizeof(r)); 3236 freq = 2412 + (r % 3) * 25; 3237 wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " 3238 "channel: %d MHz", freq); 3239 } 3240 } 3241 3242 if (freq == 5) { 3243 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " 3244 "band"); 3245 if (wpa_s->best_5_freq > 0 && 3246 p2p_supported_freq(wpa_s->global->p2p, 3247 wpa_s->best_5_freq)) { 3248 freq = wpa_s->best_5_freq; 3249 wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " 3250 "channel: %d MHz", freq); 3251 } else { 3252 os_get_random((u8 *) &r, sizeof(r)); 3253 freq = 5180 + (r % 4) * 20; 3254 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { 3255 wpa_printf(MSG_DEBUG, "P2P: Could not select " 3256 "5 GHz channel for P2P group"); 3257 return -1; 3258 } 3259 wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " 3260 "channel: %d MHz", freq); 3261 } 3262 } 3263 3264 if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) { 3265 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " 3266 "(%u MHz) is not supported for P2P uses", 3267 freq); 3268 return -1; 3269 } 3270 3271 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq)) 3272 return -1; 3273 p2p_go_params(wpa_s->global->p2p, ¶ms); 3274 params.persistent_group = persistent_group; 3275 3276 wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); 3277 if (wpa_s == NULL) 3278 return -1; 3279 wpas_start_wps_go(wpa_s, ¶ms, 0); 3280 3281 return 0; 3282 } 3283 3284 3285 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, 3286 struct wpa_ssid *params, int addr_allocated) 3287 { 3288 struct wpa_ssid *ssid; 3289 3290 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); 3291 if (wpa_s == NULL) 3292 return -1; 3293 3294 wpa_supplicant_ap_deinit(wpa_s); 3295 3296 ssid = wpa_config_add_network(wpa_s->conf); 3297 if (ssid == NULL) 3298 return -1; 3299 wpa_config_set_network_defaults(ssid); 3300 ssid->temporary = 1; 3301 ssid->proto = WPA_PROTO_RSN; 3302 ssid->pairwise_cipher = WPA_CIPHER_CCMP; 3303 ssid->group_cipher = WPA_CIPHER_CCMP; 3304 ssid->key_mgmt = WPA_KEY_MGMT_PSK; 3305 ssid->ssid = os_malloc(params->ssid_len); 3306 if (ssid->ssid == NULL) { 3307 wpa_config_remove_network(wpa_s->conf, ssid->id); 3308 return -1; 3309 } 3310 os_memcpy(ssid->ssid, params->ssid, params->ssid_len); 3311 ssid->ssid_len = params->ssid_len; 3312 ssid->p2p_group = 1; 3313 ssid->export_keys = 1; 3314 if (params->psk_set) { 3315 os_memcpy(ssid->psk, params->psk, 32); 3316 ssid->psk_set = 1; 3317 } 3318 if (params->passphrase) 3319 ssid->passphrase = os_strdup(params->passphrase); 3320 3321 wpa_supplicant_select_network(wpa_s, ssid); 3322 3323 wpa_s->show_group_started = 1; 3324 3325 return 0; 3326 } 3327 3328 3329 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, 3330 struct wpa_ssid *ssid, int addr_allocated, 3331 int freq) 3332 { 3333 struct p2p_go_neg_results params; 3334 int go = 0; 3335 3336 if (ssid->disabled != 2 || ssid->ssid == NULL) 3337 return -1; 3338 3339 if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && 3340 go == (ssid->mode == WPAS_MODE_P2P_GO)) { 3341 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " 3342 "already running"); 3343 return 0; 3344 } 3345 3346 /* Make sure we are not running find during connection establishment */ 3347 wpas_p2p_stop_find(wpa_s); 3348 3349 if (ssid->mode == WPAS_MODE_INFRA) 3350 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated); 3351 3352 if (ssid->mode != WPAS_MODE_P2P_GO) 3353 return -1; 3354 3355 if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq)) 3356 return -1; 3357 3358 params.role_go = 1; 3359 if (ssid->passphrase == NULL || 3360 os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { 3361 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent " 3362 "group"); 3363 return -1; 3364 } 3365 os_strlcpy(params.passphrase, ssid->passphrase, 3366 sizeof(params.passphrase)); 3367 os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); 3368 params.ssid_len = ssid->ssid_len; 3369 params.persistent_group = 1; 3370 3371 wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); 3372 if (wpa_s == NULL) 3373 return -1; 3374 3375 wpas_start_wps_go(wpa_s, ¶ms, 0); 3376 3377 return 0; 3378 } 3379 3380 3381 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, 3382 struct wpabuf *proberesp_ies) 3383 { 3384 struct wpa_supplicant *wpa_s = ctx; 3385 if (wpa_s->ap_iface) { 3386 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; 3387 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { 3388 wpabuf_free(beacon_ies); 3389 wpabuf_free(proberesp_ies); 3390 return; 3391 } 3392 if (beacon_ies) { 3393 wpabuf_free(hapd->p2p_beacon_ie); 3394 hapd->p2p_beacon_ie = beacon_ies; 3395 } 3396 wpabuf_free(hapd->p2p_probe_resp_ie); 3397 hapd->p2p_probe_resp_ie = proberesp_ies; 3398 } else { 3399 wpabuf_free(beacon_ies); 3400 wpabuf_free(proberesp_ies); 3401 } 3402 wpa_supplicant_ap_update_beacon(wpa_s); 3403 } 3404 3405 3406 static void wpas_p2p_idle_update(void *ctx, int idle) 3407 { 3408 struct wpa_supplicant *wpa_s = ctx; 3409 if (!wpa_s->ap_iface) 3410 return; 3411 wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); 3412 if (idle) { 3413 wpa_printf(MSG_DEBUG,"Calling set group idle time out from idle_update"); 3414 wpas_p2p_set_group_idle_timeout(wpa_s); 3415 } 3416 else 3417 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 3418 } 3419 3420 3421 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, 3422 int persistent_group, 3423 int group_formation) 3424 { 3425 struct p2p_group *group; 3426 struct p2p_group_config *cfg; 3427 3428 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3429 return NULL; 3430 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3431 return NULL; 3432 3433 cfg = os_zalloc(sizeof(*cfg)); 3434 if (cfg == NULL) 3435 return NULL; 3436 3437 if (persistent_group && wpa_s->conf->persistent_reconnect) 3438 cfg->persistent_group = 2; 3439 else if (persistent_group) 3440 cfg->persistent_group = 1; 3441 os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); 3442 if (wpa_s->max_stations && 3443 wpa_s->max_stations < wpa_s->conf->max_num_sta) 3444 cfg->max_clients = wpa_s->max_stations; 3445 else 3446 cfg->max_clients = wpa_s->conf->max_num_sta; 3447 cfg->cb_ctx = wpa_s; 3448 cfg->ie_update = wpas_p2p_ie_update; 3449 cfg->idle_update = wpas_p2p_idle_update; 3450 3451 group = p2p_group_init(wpa_s->global->p2p, cfg); 3452 if (group == NULL) 3453 os_free(cfg); 3454 if (!group_formation) 3455 p2p_group_notif_formation_done(group); 3456 wpa_s->p2p_group = group; 3457 return group; 3458 } 3459 3460 3461 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 3462 int registrar) 3463 { 3464 if (!wpa_s->p2p_in_provisioning) { 3465 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " 3466 "provisioning not in progress"); 3467 return; 3468 } 3469 3470 /* Clear any stored provisioning info */ 3471 p2p_clear_provisioning_info(wpa_s->global->p2p, peer_addr); 3472 3473 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, 3474 NULL); 3475 if (wpa_s->global->p2p) 3476 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); 3477 else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3478 wpa_drv_wps_success_cb(wpa_s, peer_addr); 3479 wpas_group_formation_completed(wpa_s, 1); 3480 } 3481 3482 3483 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, 3484 struct wps_event_fail *fail) 3485 { 3486 if (!wpa_s->p2p_in_provisioning) { 3487 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " 3488 "provisioning not in progress"); 3489 return; 3490 } 3491 3492 if (wpa_s->go_params) { 3493 p2p_clear_provisioning_info( 3494 wpa_s->global->p2p, 3495 wpa_s->go_params->peer_interface_addr); 3496 } 3497 3498 wpas_notify_p2p_wps_failed(wpa_s, fail); 3499 } 3500 3501 3502 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 3503 const char *config_method, int join) 3504 { 3505 u16 config_methods; 3506 3507 if (os_strncmp(config_method, "display", 7) == 0) 3508 config_methods = WPS_CONFIG_DISPLAY; 3509 else if (os_strncmp(config_method, "keypad", 6) == 0) 3510 config_methods = WPS_CONFIG_KEYPAD; 3511 else if (os_strncmp(config_method, "pbc", 3) == 0 || 3512 os_strncmp(config_method, "pushbutton", 10) == 0) 3513 config_methods = WPS_CONFIG_PUSHBUTTON; 3514 else { 3515 wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); 3516 return -1; 3517 } 3518 3519 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 3520 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr, 3521 config_methods, join); 3522 } 3523 3524 if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) 3525 return -1; 3526 3527 return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, 3528 config_methods, join, 0); 3529 } 3530 3531 3532 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, 3533 char *end) 3534 { 3535 return p2p_scan_result_text(ies, ies_len, buf, end); 3536 } 3537 3538 3539 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) 3540 { 3541 if (!wpa_s->pending_action_tx) 3542 return; 3543 3544 wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " 3545 "operation request"); 3546 wpabuf_free(wpa_s->pending_action_tx); 3547 wpa_s->pending_action_tx = NULL; 3548 } 3549 3550 3551 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, 3552 enum p2p_discovery_type type, 3553 unsigned int num_req_dev_types, const u8 *req_dev_types, 3554 const u8 *dev_id) 3555 { 3556 wpas_p2p_clear_pending_action_tx(wpa_s); 3557 wpa_s->p2p_long_listen = 0; 3558 3559 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3560 return wpa_drv_p2p_find(wpa_s, timeout, type); 3561 3562 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3563 return -1; 3564 3565 wpa_supplicant_cancel_sched_scan(wpa_s); 3566 3567 return p2p_find(wpa_s->global->p2p, timeout, type, 3568 num_req_dev_types, req_dev_types, dev_id); 3569 } 3570 3571 3572 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) 3573 { 3574 wpas_p2p_clear_pending_action_tx(wpa_s); 3575 wpa_s->p2p_long_listen = 0; 3576 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 3577 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); 3578 wpa_s->p2p_cb_on_scan_complete = 0; 3579 3580 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { 3581 wpa_drv_p2p_stop_find(wpa_s); 3582 return; 3583 } 3584 3585 if (wpa_s->global->p2p) 3586 p2p_stop_find(wpa_s->global->p2p); 3587 3588 wpas_p2p_remove_pending_group_interface(wpa_s); 3589 } 3590 3591 3592 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) 3593 { 3594 struct wpa_supplicant *wpa_s = eloop_ctx; 3595 wpa_s->p2p_long_listen = 0; 3596 } 3597 3598 3599 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) 3600 { 3601 int res; 3602 3603 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3604 return -1; 3605 3606 wpa_supplicant_cancel_sched_scan(wpa_s); 3607 wpas_p2p_clear_pending_action_tx(wpa_s); 3608 3609 if (timeout == 0) { 3610 /* 3611 * This is a request for unlimited Listen state. However, at 3612 * least for now, this is mapped to a Listen state for one 3613 * hour. 3614 */ 3615 timeout = 3600; 3616 } 3617 eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); 3618 wpa_s->p2p_long_listen = 0; 3619 3620 /* 3621 * Stop previous find/listen operation to avoid trying to request a new 3622 * remain-on-channel operation while the driver is still running the 3623 * previous one. 3624 */ 3625 if (wpa_s->global->p2p) 3626 p2p_stop_find(wpa_s->global->p2p); 3627 3628 res = wpas_p2p_listen_start(wpa_s, timeout * 1000); 3629 if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { 3630 wpa_s->p2p_long_listen = timeout * 1000; 3631 eloop_register_timeout(timeout, 0, 3632 wpas_p2p_long_listen_timeout, 3633 wpa_s, NULL); 3634 } 3635 3636 return res; 3637 } 3638 3639 3640 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 3641 u8 *buf, size_t len, int p2p_group) 3642 { 3643 struct wpabuf *p2p_ie; 3644 int ret; 3645 3646 if (wpa_s->global->p2p_disabled) 3647 return -1; 3648 if (wpa_s->global->p2p == NULL) 3649 return -1; 3650 if (bss == NULL) 3651 return -1; 3652 3653 p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); 3654 ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, 3655 p2p_group, p2p_ie); 3656 wpabuf_free(p2p_ie); 3657 3658 return ret; 3659 } 3660 3661 3662 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, 3663 const u8 *dst, const u8 *bssid, 3664 const u8 *ie, size_t ie_len) 3665 { 3666 if (wpa_s->global->p2p_disabled) 3667 return 0; 3668 if (wpa_s->global->p2p == NULL) 3669 return 0; 3670 3671 return p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, 3672 ie, ie_len); 3673 } 3674 3675 3676 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, 3677 const u8 *sa, const u8 *bssid, 3678 u8 category, const u8 *data, size_t len, int freq) 3679 { 3680 if (wpa_s->global->p2p_disabled) 3681 return; 3682 if (wpa_s->global->p2p == NULL) 3683 return; 3684 3685 p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, 3686 freq); 3687 } 3688 3689 3690 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) 3691 { 3692 if (wpa_s->global->p2p_disabled) 3693 return; 3694 if (wpa_s->global->p2p == NULL) 3695 return; 3696 3697 p2p_scan_ie(wpa_s->global->p2p, ies, NULL); 3698 } 3699 3700 3701 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) 3702 { 3703 p2p_group_deinit(wpa_s->p2p_group); 3704 wpa_s->p2p_group = NULL; 3705 3706 wpa_s->ap_configured_cb = NULL; 3707 wpa_s->ap_configured_cb_ctx = NULL; 3708 wpa_s->ap_configured_cb_data = NULL; 3709 wpa_s->connect_without_scan = NULL; 3710 } 3711 3712 3713 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) 3714 { 3715 wpa_s->p2p_long_listen = 0; 3716 3717 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3718 return wpa_drv_p2p_reject(wpa_s, addr); 3719 3720 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3721 return -1; 3722 3723 return p2p_reject(wpa_s->global->p2p, addr); 3724 } 3725 3726 3727 /* Invite to reinvoke a persistent group */ 3728 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, 3729 struct wpa_ssid *ssid, const u8 *go_dev_addr) 3730 { 3731 enum p2p_invite_role role; 3732 u8 *bssid = NULL; 3733 3734 if (ssid->mode == WPAS_MODE_P2P_GO) { 3735 role = P2P_INVITE_ROLE_GO; 3736 if (peer_addr == NULL) { 3737 wpa_printf(MSG_DEBUG, "P2P: Missing peer " 3738 "address in invitation command"); 3739 return -1; 3740 } 3741 if (wpas_p2p_create_iface(wpa_s)) { 3742 if (wpas_p2p_add_group_interface(wpa_s, 3743 WPA_IF_P2P_GO) < 0) { 3744 wpa_printf(MSG_ERROR, "P2P: Failed to " 3745 "allocate a new interface for the " 3746 "group"); 3747 return -1; 3748 } 3749 bssid = wpa_s->pending_interface_addr; 3750 } else 3751 bssid = wpa_s->own_addr; 3752 } else { 3753 role = P2P_INVITE_ROLE_CLIENT; 3754 peer_addr = ssid->bssid; 3755 } 3756 wpa_s->pending_invite_ssid_id = ssid->id; 3757 3758 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3759 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 3760 ssid->ssid, ssid->ssid_len, 3761 go_dev_addr, 1); 3762 3763 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3764 return -1; 3765 3766 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 3767 ssid->ssid, ssid->ssid_len, 0, go_dev_addr, 1); 3768 } 3769 3770 3771 /* Invite to join an active group */ 3772 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, 3773 const u8 *peer_addr, const u8 *go_dev_addr) 3774 { 3775 struct wpa_global *global = wpa_s->global; 3776 enum p2p_invite_role role; 3777 u8 *bssid = NULL; 3778 struct wpa_ssid *ssid; 3779 int persistent; 3780 3781 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 3782 if (os_strcmp(wpa_s->ifname, ifname) == 0) 3783 break; 3784 } 3785 if (wpa_s == NULL) { 3786 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); 3787 return -1; 3788 } 3789 3790 ssid = wpa_s->current_ssid; 3791 if (ssid == NULL) { 3792 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " 3793 "invitation"); 3794 return -1; 3795 } 3796 3797 persistent = ssid->p2p_persistent_group && 3798 wpas_p2p_get_persistent(wpa_s->parent, peer_addr, 3799 ssid->ssid, ssid->ssid_len); 3800 3801 if (ssid->mode == WPAS_MODE_P2P_GO) { 3802 role = P2P_INVITE_ROLE_ACTIVE_GO; 3803 bssid = wpa_s->own_addr; 3804 if (go_dev_addr == NULL) 3805 go_dev_addr = wpa_s->global->p2p_dev_addr; 3806 } else { 3807 role = P2P_INVITE_ROLE_CLIENT; 3808 if (wpa_s->wpa_state < WPA_ASSOCIATED) { 3809 wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " 3810 "invite to current group"); 3811 return -1; 3812 } 3813 bssid = wpa_s->bssid; 3814 if (go_dev_addr == NULL && 3815 !is_zero_ether_addr(wpa_s->go_dev_addr)) 3816 go_dev_addr = wpa_s->go_dev_addr; 3817 } 3818 wpa_s->parent->pending_invite_ssid_id = -1; 3819 3820 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3821 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, 3822 ssid->ssid, ssid->ssid_len, 3823 go_dev_addr, persistent); 3824 3825 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3826 return -1; 3827 3828 return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, 3829 ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq, 3830 go_dev_addr, persistent); 3831 } 3832 3833 3834 void wpas_p2p_completed(struct wpa_supplicant *wpa_s) 3835 { 3836 struct wpa_ssid *ssid = wpa_s->current_ssid; 3837 const char *ssid_txt; 3838 u8 go_dev_addr[ETH_ALEN]; 3839 int network_id = -1; 3840 int persistent; 3841 int freq; 3842 3843 if (!wpa_s->show_group_started || !ssid) 3844 return; 3845 3846 wpa_s->show_group_started = 0; 3847 3848 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); 3849 os_memset(go_dev_addr, 0, ETH_ALEN); 3850 if (ssid->bssid_set) 3851 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); 3852 persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, 3853 ssid->ssid_len); 3854 os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); 3855 3856 if (wpa_s->global->p2p_group_formation == wpa_s) 3857 wpa_s->global->p2p_group_formation = NULL; 3858 3859 freq = wpa_s->current_bss ? wpa_s->current_bss->freq : 3860 (int) wpa_s->assoc_freq; 3861 if (ssid->passphrase == NULL && ssid->psk_set) { 3862 char psk[65]; 3863 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); 3864 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 3865 "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr=" 3866 MACSTR "%s", 3867 wpa_s->ifname, ssid_txt, freq, psk, 3868 MAC2STR(go_dev_addr), 3869 persistent ? " [PERSISTENT]" : ""); 3870 } else { 3871 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED 3872 "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" " 3873 "go_dev_addr=" MACSTR "%s", 3874 wpa_s->ifname, ssid_txt, freq, 3875 ssid->passphrase ? ssid->passphrase : "", 3876 MAC2STR(go_dev_addr), 3877 persistent ? " [PERSISTENT]" : ""); 3878 } 3879 3880 if (persistent) 3881 network_id = wpas_p2p_store_persistent_group(wpa_s->parent, 3882 ssid, go_dev_addr); 3883 if (network_id < 0) 3884 network_id = ssid->id; 3885 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); 3886 } 3887 3888 3889 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, 3890 u32 interval1, u32 duration2, u32 interval2) 3891 { 3892 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3893 return -1; 3894 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3895 return -1; 3896 3897 if (wpa_s->wpa_state < WPA_ASSOCIATED || 3898 wpa_s->current_ssid == NULL || 3899 wpa_s->current_ssid->mode != WPAS_MODE_INFRA) 3900 return -1; 3901 3902 return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, 3903 wpa_s->own_addr, wpa_s->assoc_freq, 3904 duration1, interval1, duration2, interval2); 3905 } 3906 3907 3908 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, 3909 unsigned int interval) 3910 { 3911 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3912 return -1; 3913 3914 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3915 return -1; 3916 3917 return p2p_ext_listen(wpa_s->global->p2p, period, interval); 3918 } 3919 3920 3921 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) 3922 { 3923 return wpa_s->current_ssid != NULL && 3924 wpa_s->current_ssid->p2p_group && 3925 wpa_s->current_ssid->mode == WPAS_MODE_INFRA; 3926 } 3927 3928 3929 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) 3930 { 3931 struct wpa_supplicant *wpa_s = eloop_ctx; 3932 3933 if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { 3934 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " 3935 "disabled"); 3936 return; 3937 } 3938 3939 wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate %d" 3940 "group",wpa_s->conf->p2p_group_idle); 3941 wpa_s->removal_reason = P2P_GROUP_REMOVAL_IDLE_TIMEOUT; 3942 wpas_p2p_group_delete(wpa_s); 3943 } 3944 3945 3946 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) 3947 { 3948 unsigned int timeout; 3949 3950 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 3951 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 3952 return; 3953 3954 timeout = wpa_s->conf->p2p_group_idle; 3955 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && 3956 (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) 3957 timeout = P2P_MAX_CLIENT_IDLE; 3958 3959 if (timeout == 0) 3960 return; 3961 3962 wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", 3963 timeout); 3964 eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, 3965 wpa_s, NULL); 3966 } 3967 3968 3969 void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 3970 u16 reason_code, const u8 *ie, size_t ie_len) 3971 { 3972 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3973 return; 3974 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3975 return; 3976 3977 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len); 3978 } 3979 3980 3981 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, 3982 u16 reason_code, const u8 *ie, size_t ie_len) 3983 { 3984 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 3985 return; 3986 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 3987 return; 3988 3989 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len); 3990 } 3991 3992 3993 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) 3994 { 3995 struct p2p_data *p2p = wpa_s->global->p2p; 3996 3997 if (p2p == NULL) 3998 return; 3999 4000 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) 4001 return; 4002 4003 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) 4004 p2p_set_dev_name(p2p, wpa_s->conf->device_name); 4005 4006 if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) 4007 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); 4008 4009 if (wpa_s->wps && 4010 (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) 4011 p2p_set_config_methods(p2p, wpa_s->wps->config_methods); 4012 4013 if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) 4014 p2p_set_uuid(p2p, wpa_s->wps->uuid); 4015 4016 if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { 4017 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); 4018 p2p_set_model_name(p2p, wpa_s->conf->model_name); 4019 p2p_set_model_number(p2p, wpa_s->conf->model_number); 4020 p2p_set_serial_number(p2p, wpa_s->conf->serial_number); 4021 } 4022 4023 if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) 4024 p2p_set_sec_dev_types(p2p, 4025 (void *) wpa_s->conf->sec_device_type, 4026 wpa_s->conf->num_sec_device_types); 4027 4028 if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { 4029 int i; 4030 p2p_remove_wps_vendor_extensions(p2p); 4031 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { 4032 if (wpa_s->conf->wps_vendor_ext[i] == NULL) 4033 continue; 4034 p2p_add_wps_vendor_extension( 4035 p2p, wpa_s->conf->wps_vendor_ext[i]); 4036 } 4037 } 4038 4039 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && 4040 wpa_s->conf->country[0] && wpa_s->conf->country[1]) { 4041 char country[3]; 4042 country[0] = wpa_s->conf->country[0]; 4043 country[1] = wpa_s->conf->country[1]; 4044 country[2] = 0x04; 4045 p2p_set_country(p2p, country); 4046 } 4047 4048 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { 4049 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, 4050 wpa_s->conf->p2p_ssid_postfix ? 4051 os_strlen(wpa_s->conf->p2p_ssid_postfix) : 4052 0); 4053 } 4054 4055 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) 4056 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); 4057 4058 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { 4059 u8 reg_class, channel; 4060 int ret; 4061 unsigned int r; 4062 if (wpa_s->conf->p2p_listen_reg_class && 4063 wpa_s->conf->p2p_listen_channel) { 4064 reg_class = wpa_s->conf->p2p_listen_reg_class; 4065 channel = wpa_s->conf->p2p_listen_channel; 4066 } else { 4067 reg_class = 81; 4068 /* 4069 * Pick one of the social channels randomly as the 4070 * listen channel. 4071 */ 4072 os_get_random((u8 *) &r, sizeof(r)); 4073 channel = 1 + (r % 3) * 5; 4074 } 4075 ret = p2p_set_listen_channel(p2p, reg_class, channel); 4076 if (ret) 4077 wpa_printf(MSG_ERROR, "P2P: Own listen channel update " 4078 "failed: %d", ret); 4079 } 4080 if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { 4081 u8 op_reg_class, op_channel, cfg_op_channel; 4082 int ret = 0; 4083 unsigned int r; 4084 if (wpa_s->conf->p2p_oper_reg_class && 4085 wpa_s->conf->p2p_oper_channel) { 4086 op_reg_class = wpa_s->conf->p2p_oper_reg_class; 4087 op_channel = wpa_s->conf->p2p_oper_channel; 4088 cfg_op_channel = 1; 4089 } else { 4090 op_reg_class = 81; 4091 /* 4092 * Use random operation channel from (1, 6, 11) 4093 *if no other preference is indicated. 4094 */ 4095 os_get_random((u8 *) &r, sizeof(r)); 4096 op_channel = 1 + (r % 3) * 5; 4097 cfg_op_channel = 0; 4098 } 4099 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, 4100 cfg_op_channel); 4101 if (ret) 4102 wpa_printf(MSG_ERROR, "P2P: Own oper channel update " 4103 "failed: %d", ret); 4104 } 4105 } 4106 4107 4108 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, 4109 int duration) 4110 { 4111 if (!wpa_s->ap_iface) 4112 return -1; 4113 return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, 4114 duration); 4115 } 4116 4117 4118 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) 4119 { 4120 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4121 return -1; 4122 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) 4123 return -1; 4124 4125 wpa_s->global->cross_connection = enabled; 4126 p2p_set_cross_connect(wpa_s->global->p2p, enabled); 4127 4128 if (!enabled) { 4129 struct wpa_supplicant *iface; 4130 4131 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) 4132 { 4133 if (iface->cross_connect_enabled == 0) 4134 continue; 4135 4136 iface->cross_connect_enabled = 0; 4137 iface->cross_connect_in_use = 0; 4138 wpa_msg(iface->parent, MSG_INFO, 4139 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 4140 iface->ifname, iface->cross_connect_uplink); 4141 } 4142 } 4143 4144 return 0; 4145 } 4146 4147 4148 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) 4149 { 4150 struct wpa_supplicant *iface; 4151 4152 if (!uplink->global->cross_connection) 4153 return; 4154 4155 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 4156 if (!iface->cross_connect_enabled) 4157 continue; 4158 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 4159 0) 4160 continue; 4161 if (iface->ap_iface == NULL) 4162 continue; 4163 if (iface->cross_connect_in_use) 4164 continue; 4165 4166 iface->cross_connect_in_use = 1; 4167 wpa_msg(iface->parent, MSG_INFO, 4168 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 4169 iface->ifname, iface->cross_connect_uplink); 4170 } 4171 } 4172 4173 4174 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) 4175 { 4176 struct wpa_supplicant *iface; 4177 4178 for (iface = uplink->global->ifaces; iface; iface = iface->next) { 4179 if (!iface->cross_connect_enabled) 4180 continue; 4181 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != 4182 0) 4183 continue; 4184 if (!iface->cross_connect_in_use) 4185 continue; 4186 4187 wpa_msg(iface->parent, MSG_INFO, 4188 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", 4189 iface->ifname, iface->cross_connect_uplink); 4190 iface->cross_connect_in_use = 0; 4191 } 4192 } 4193 4194 4195 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) 4196 { 4197 if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || 4198 wpa_s->current_ssid->mode != WPAS_MODE_INFRA || 4199 wpa_s->cross_connect_disallowed) 4200 wpas_p2p_disable_cross_connect(wpa_s); 4201 else 4202 wpas_p2p_enable_cross_connect(wpa_s); 4203 if (!wpa_s->ap_iface) 4204 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); 4205 } 4206 4207 4208 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) 4209 { 4210 wpas_p2p_disable_cross_connect(wpa_s); 4211 if (!wpa_s->ap_iface && 4212 !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, 4213 wpa_s, NULL)) 4214 { 4215 wpa_printf(MSG_DEBUG,"Calling set grouple idle_timeout from notif_disconnected"); 4216 wpas_p2p_set_group_idle_timeout(wpa_s); 4217 } 4218 } 4219 4220 4221 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) 4222 { 4223 struct wpa_supplicant *iface; 4224 4225 if (!wpa_s->global->cross_connection) 4226 return; 4227 4228 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 4229 if (iface == wpa_s) 4230 continue; 4231 if (iface->drv_flags & 4232 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) 4233 continue; 4234 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) 4235 continue; 4236 4237 wpa_s->cross_connect_enabled = 1; 4238 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, 4239 sizeof(wpa_s->cross_connect_uplink)); 4240 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " 4241 "%s to %s whenever uplink is available", 4242 wpa_s->ifname, wpa_s->cross_connect_uplink); 4243 4244 if (iface->ap_iface || iface->current_ssid == NULL || 4245 iface->current_ssid->mode != WPAS_MODE_INFRA || 4246 iface->cross_connect_disallowed || 4247 iface->wpa_state != WPA_COMPLETED) 4248 break; 4249 4250 wpa_s->cross_connect_in_use = 1; 4251 wpa_msg(wpa_s->parent, MSG_INFO, 4252 P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", 4253 wpa_s->ifname, wpa_s->cross_connect_uplink); 4254 break; 4255 } 4256 } 4257 4258 4259 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) 4260 { 4261 if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && 4262 !wpa_s->p2p_in_provisioning) 4263 return 0; /* not P2P client operation */ 4264 4265 wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " 4266 "session overlap"); 4267 if (wpa_s != wpa_s->parent) 4268 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP); 4269 4270 if (wpa_s->global->p2p) 4271 p2p_group_formation_failed(wpa_s->global->p2p); 4272 4273 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 4274 wpa_s->parent, NULL); 4275 4276 wpas_group_formation_completed(wpa_s, 0); 4277 return 1; 4278 } 4279 4280 4281 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s) 4282 { 4283 struct p2p_channels chan; 4284 4285 if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) 4286 return; 4287 4288 os_memset(&chan, 0, sizeof(chan)); 4289 if (wpas_p2p_setup_channels(wpa_s, &chan)) { 4290 wpa_printf(MSG_ERROR, "P2P: Failed to update supported " 4291 "channel list"); 4292 return; 4293 } 4294 4295 p2p_update_channel_list(wpa_s->global->p2p, &chan); 4296 } 4297 4298 4299 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) 4300 { 4301 struct wpa_global *global = wpa_s->global; 4302 int found = 0; 4303 const u8 *peer; 4304 4305 if (global->p2p == NULL) 4306 return -1; 4307 4308 wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); 4309 4310 if (wpa_s->pending_interface_name[0] && 4311 !is_zero_ether_addr(wpa_s->pending_interface_addr)) 4312 found = 1; 4313 4314 peer = p2p_get_go_neg_peer(global->p2p); 4315 if (peer) { 4316 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " 4317 MACSTR, MAC2STR(peer)); 4318 p2p_unauthorize(global->p2p, peer); 4319 } 4320 4321 wpas_p2p_stop_find(wpa_s); 4322 4323 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { 4324 if (wpa_s == global->p2p_group_formation && 4325 (wpa_s->p2p_in_provisioning || 4326 wpa_s->parent->pending_interface_type == 4327 WPA_IF_P2P_CLIENT)) { 4328 wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " 4329 "formation found - cancelling", 4330 wpa_s->ifname); 4331 found = 1; 4332 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 4333 wpa_s->parent, NULL); 4334 wpas_p2p_group_delete(wpa_s); 4335 break; 4336 } 4337 } 4338 4339 if (!found) { 4340 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); 4341 return -1; 4342 } 4343 4344 return 0; 4345 } 4346 4347 4348 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) 4349 { 4350 if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) 4351 return; 4352 4353 wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " 4354 "being available anymore"); 4355 wpa_s->removal_reason = P2P_GROUP_REMOVAL_UNAVAILABLE; 4356 wpas_p2p_group_delete(wpa_s); 4357 } 4358 4359 4360 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, 4361 int freq_24, int freq_5, int freq_overall) 4362 { 4363 struct p2p_data *p2p = wpa_s->global->p2p; 4364 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 4365 return; 4366 p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); 4367 } 4368 4369 4370 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) 4371 { 4372 u8 peer[ETH_ALEN]; 4373 struct p2p_data *p2p = wpa_s->global->p2p; 4374 4375 if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) 4376 return -1; 4377 4378 if (hwaddr_aton(addr, peer)) 4379 return -1; 4380 4381 return p2p_unauthorize(p2p, peer); 4382 } 4383 4384 4385 /** 4386 * wpas_p2p_disconnect - Disconnect from a P2P Group 4387 * @wpa_s: Pointer to wpa_supplicant data 4388 * Returns: 0 on success, -1 on failure 4389 * 4390 * This can be used to disconnect from a group in which the local end is a P2P 4391 * Client or to end a P2P Group in case the local end is the Group Owner. If a 4392 * virtual network interface was created for this group, that interface will be 4393 * removed. Otherwise, only the configured P2P group network will be removed 4394 * from the interface. 4395 */ 4396 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) 4397 { 4398 4399 if (wpa_s == NULL) 4400 return -1; 4401 4402 wpa_s->removal_reason = P2P_GROUP_REMOVAL_REQUESTED; 4403 wpas_p2p_group_delete(wpa_s); 4404 4405 return 0; 4406 } 4407 4408 4409 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) 4410 { 4411 if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) 4412 return 0; 4413 4414 return p2p_in_progress(wpa_s->global->p2p); 4415 } 4416 4417 4418 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, 4419 struct wpa_ssid *ssid) 4420 4421 { 4422 if (wpa_s->p2p_in_provisioning && ssid->p2p_group && 4423 eloop_cancel_timeout(wpas_p2p_group_formation_timeout, 4424 wpa_s->parent, NULL) > 0) { 4425 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " 4426 "P2P group network getting removed"); 4427 #ifdef ANDROID_P2P 4428 /* Give time for any Pending WPS Frame exchange */ 4429 eloop_register_timeout(5, 0, wpas_p2p_group_formation_timeout, 4430 wpa_s->parent, NULL); 4431 #else 4432 wpas_p2p_group_formation_timeout(wpa_s->parent, NULL); 4433 #endif 4434 } 4435 } 4436 4437 4438 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, 4439 const u8 *addr, const u8 *ssid, 4440 size_t ssid_len) 4441 { 4442 struct wpa_ssid *s; 4443 size_t i; 4444 4445 for (s = wpa_s->conf->ssid; s; s = s->next) { 4446 if (s->disabled != 2) 4447 continue; 4448 if (ssid && 4449 (ssid_len != s->ssid_len || 4450 os_memcmp(ssid, s->ssid, ssid_len) != 0)) 4451 continue; 4452 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) 4453 return s; /* peer is GO in the persistent group */ 4454 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) 4455 continue; 4456 for (i = 0; i < s->num_p2p_clients; i++) { 4457 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, 4458 addr, ETH_ALEN) == 0) 4459 return s; /* peer is P2P client in persistent 4460 * group */ 4461 } 4462 } 4463 4464 return NULL; 4465 } 4466 4467 4468 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, 4469 const u8 *addr) 4470 { 4471 if (addr == NULL) 4472 return; 4473 wpas_p2p_add_persistent_group_client(wpa_s, addr); 4474 } 4475 4476 #ifdef ANDROID_P2P 4477 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq) 4478 { 4479 struct wpa_supplicant *iface = NULL; 4480 struct p2p_data *p2p = wpa_s->global->p2p; 4481 4482 for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { 4483 if((iface->p2p_group_interface) && (iface->current_ssid) && 4484 (iface->current_ssid->frequency != freq)) { 4485 4486 if (iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) { 4487 /* Try to see whether we can move the GO. If it 4488 * is not possible, remove the GO interface 4489 */ 4490 if(wpa_drv_switch_channel(iface, freq) == 0) { 4491 wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq); 4492 iface->current_ssid->frequency = freq; 4493 continue; 4494 } 4495 } 4496 4497 /* If GO cannot be moved or if the conflicting interface is a 4498 * P2P Client, remove the interface depending up on the connection 4499 * priority */ 4500 if(!wpas_is_p2p_prioritized(wpa_s)) { 4501 /* STA connection has priority over existing 4502 * P2P connection. So remove the interface */ 4503 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel" 4504 "concurrent mode frequency conflict"); 4505 iface->removal_reason = P2P_GROUP_REMOVAL_FREQ_CONFLICT; 4506 wpas_p2p_group_delete(iface); 4507 } else { 4508 /* Existing connection has the priority. Disable the newly 4509 * selected network and let the application know about it. 4510 */ 4511 return -1; 4512 } 4513 } 4514 } 4515 return 0; 4516 } 4517 #endif 4518
