diff options
Diffstat (limited to 'wpa_supplicant/p2p_supplicant.c')
| -rw-r--r-- | wpa_supplicant/p2p_supplicant.c | 5484 |
1 files changed, 5484 insertions, 0 deletions
diff --git a/wpa_supplicant/p2p_supplicant.c b/wpa_supplicant/p2p_supplicant.c new file mode 100644 index 0000000000000..0a09b004238c4 --- /dev/null +++ b/wpa_supplicant/p2p_supplicant.c @@ -0,0 +1,5484 @@ +/* + * wpa_supplicant - P2P + * Copyright (c) 2009-2010, Atheros Communications + * + * This software may be distributed under the terms of the BSD license. + * See README for more details. + */ + +#include "includes.h" + +#include "common.h" +#include "eloop.h" +#include "common/ieee802_11_common.h" +#include "common/ieee802_11_defs.h" +#include "common/wpa_ctrl.h" +#include "wps/wps_i.h" +#include "p2p/p2p.h" +#include "ap/hostapd.h" +#include "ap/ap_config.h" +#include "ap/p2p_hostapd.h" +#include "eapol_supp/eapol_supp_sm.h" +#include "rsn_supp/wpa.h" +#include "wpa_supplicant_i.h" +#include "driver_i.h" +#include "ap.h" +#include "config_ssid.h" +#include "config.h" +#include "notify.h" +#include "scan.h" +#include "bss.h" +#include "offchannel.h" +#include "wps_supplicant.h" +#include "p2p_supplicant.h" + + +/* + * How many times to try to scan to find the GO before giving up on join + * request. + */ +#define P2P_MAX_JOIN_SCAN_ATTEMPTS 10 + +#define P2P_AUTO_PD_SCAN_ATTEMPTS 5 + +#ifndef P2P_MAX_CLIENT_IDLE +/* + * How many seconds to try to reconnect to the GO when connection in P2P client + * role has been lost. + */ +#define P2P_MAX_CLIENT_IDLE 10 +#endif /* P2P_MAX_CLIENT_IDLE */ + +#ifndef P2P_MAX_INITIAL_CONN_WAIT +/* + * How many seconds to wait for initial 4-way handshake to get completed after + * WPS provisioning step. + */ +#define P2P_MAX_INITIAL_CONN_WAIT 10 +#endif /* P2P_MAX_INITIAL_CONN_WAIT */ + +#ifndef P2P_CONCURRENT_SEARCH_DELAY +#define P2P_CONCURRENT_SEARCH_DELAY 500 +#endif /* P2P_CONCURRENT_SEARCH_DELAY */ + +enum p2p_group_removal_reason { + P2P_GROUP_REMOVAL_UNKNOWN, + P2P_GROUP_REMOVAL_SILENT, + P2P_GROUP_REMOVAL_FORMATION_FAILED, + P2P_GROUP_REMOVAL_REQUESTED, + P2P_GROUP_REMOVAL_IDLE_TIMEOUT, + P2P_GROUP_REMOVAL_UNAVAILABLE, + P2P_GROUP_REMOVAL_GO_ENDING_SESSION +}; + + +static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx); +static struct wpa_supplicant * +wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, + int go); +static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s); +static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq); +static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx); +static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, + const u8 *dev_addr, enum p2p_wps_method wps_method, + int auto_join); +static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s); +static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s); +static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx); +static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s); +static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, + int group_added); +static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s); + + +static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s, + struct wpa_scan_results *scan_res) +{ + size_t i; + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return; + + wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)", + (int) scan_res->num); + + for (i = 0; i < scan_res->num; i++) { + struct wpa_scan_res *bss = scan_res->res[i]; + if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid, + bss->freq, bss->age, bss->level, + (const u8 *) (bss + 1), + bss->ie_len) > 0) + break; + } + + p2p_scan_res_handled(wpa_s->global->p2p); +} + + +static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq, + unsigned int num_req_dev_types, + const u8 *req_dev_types, const u8 *dev_id, u16 pw_id) +{ + struct wpa_supplicant *wpa_s = ctx; + struct wpa_supplicant *ifs; + struct wpa_driver_scan_params params; + int ret; + struct wpabuf *wps_ie, *ies; + int social_channels[] = { 2412, 2437, 2462, 0, 0 }; + size_t ielen; + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + + for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { + if (ifs->sta_scan_pending && + wpas_p2p_in_progress(wpa_s) == 2) { + wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow " + "pending station mode scan to be " + "completed on interface %s", ifs->ifname); + wpa_s->global->p2p_cb_on_scan_complete = 1; + wpa_supplicant_req_scan(ifs, 0, 0); + return 1; + } + } + + os_memset(¶ms, 0, sizeof(params)); + + /* P2P Wildcard SSID */ + params.num_ssids = 1; + params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; + params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; + + wpa_s->wps->dev.p2p = 1; + wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev, + wpa_s->wps->uuid, WPS_REQ_ENROLLEE, + num_req_dev_types, req_dev_types); + if (wps_ie == NULL) + return -1; + + ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); + ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); + if (ies == NULL) { + wpabuf_free(wps_ie); + return -1; + } + wpabuf_put_buf(ies, wps_ie); + wpabuf_free(wps_ie); + + p2p_scan_ie(wpa_s->global->p2p, ies, dev_id); + + params.p2p_probe = 1; + params.extra_ies = wpabuf_head(ies); + params.extra_ies_len = wpabuf_len(ies); + + switch (type) { + case P2P_SCAN_SOCIAL: + params.freqs = social_channels; + break; + case P2P_SCAN_FULL: + break; + case P2P_SCAN_SOCIAL_PLUS_ONE: + social_channels[3] = freq; + params.freqs = social_channels; + break; + } + + ret = wpa_drv_scan(wpa_s, ¶ms); + + wpabuf_free(ies); + + if (ret) { + for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { + if (ifs->scanning || + ifs->scan_res_handler == wpas_p2p_scan_res_handler) { + wpa_s->global->p2p_cb_on_scan_complete = 1; + ret = 1; + break; + } + } + } else + wpa_s->scan_res_handler = wpas_p2p_scan_res_handler; + + return ret; +} + + +static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface) +{ + switch (p2p_group_interface) { + case P2P_GROUP_INTERFACE_PENDING: + return WPA_IF_P2P_GROUP; + case P2P_GROUP_INTERFACE_GO: + return WPA_IF_P2P_GO; + case P2P_GROUP_INTERFACE_CLIENT: + return WPA_IF_P2P_CLIENT; + } + + return WPA_IF_P2P_GROUP; +} + + +static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s, + const u8 *ssid, + size_t ssid_len, int *go) +{ + struct wpa_ssid *s; + + for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { + for (s = wpa_s->conf->ssid; s; s = s->next) { + if (s->disabled != 0 || !s->p2p_group || + s->ssid_len != ssid_len || + os_memcmp(ssid, s->ssid, ssid_len) != 0) + continue; + if (s->mode == WPAS_MODE_P2P_GO && + s != wpa_s->current_ssid) + continue; + if (go) + *go = s->mode == WPAS_MODE_P2P_GO; + return wpa_s; + } + } + + return NULL; +} + + +static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s, + enum p2p_group_removal_reason removal_reason) +{ + struct wpa_ssid *ssid; + char *gtype; + const char *reason; + + ssid = wpa_s->current_ssid; + if (ssid == NULL) { + /* + * The current SSID was not known, but there may still be a + * pending P2P group interface waiting for provisioning or a + * P2P group that is trying to reconnect. + */ + ssid = wpa_s->conf->ssid; + while (ssid) { + if (ssid->p2p_group && ssid->disabled != 2) + break; + ssid = ssid->next; + } + if (ssid == NULL && + wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE) + { + wpa_printf(MSG_ERROR, "P2P: P2P group interface " + "not found"); + return -1; + } + } + if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO) + gtype = "GO"; + else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT || + (ssid && ssid->mode == WPAS_MODE_INFRA)) { + wpa_s->reassociate = 0; + wpa_s->disconnected = 1; + wpa_supplicant_deauthenticate(wpa_s, + WLAN_REASON_DEAUTH_LEAVING); + gtype = "client"; + } else + gtype = "GO"; + if (wpa_s->cross_connect_in_use) { + wpa_s->cross_connect_in_use = 0; + wpa_msg(wpa_s->parent, MSG_INFO, + P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", + wpa_s->ifname, wpa_s->cross_connect_uplink); + } + switch (removal_reason) { + case P2P_GROUP_REMOVAL_REQUESTED: + reason = " reason=REQUESTED"; + break; + case P2P_GROUP_REMOVAL_FORMATION_FAILED: + reason = " reason=FORMATION_FAILED"; + break; + case P2P_GROUP_REMOVAL_IDLE_TIMEOUT: + reason = " reason=IDLE"; + break; + case P2P_GROUP_REMOVAL_UNAVAILABLE: + reason = " reason=UNAVAILABLE"; + break; + case P2P_GROUP_REMOVAL_GO_ENDING_SESSION: + reason = " reason=GO_ENDING_SESSION"; + break; + default: + reason = ""; + break; + } + if (removal_reason != P2P_GROUP_REMOVAL_SILENT) { + wpa_msg(wpa_s->parent, MSG_INFO, + P2P_EVENT_GROUP_REMOVED "%s %s%s", + wpa_s->ifname, gtype, reason); + } + + if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) + wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); + + if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid) + wpas_notify_p2p_group_removed(wpa_s, ssid, gtype); + + if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) { + struct wpa_global *global; + char *ifname; + enum wpa_driver_if_type type; + wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s", + wpa_s->ifname); + global = wpa_s->global; + ifname = os_strdup(wpa_s->ifname); + type = wpas_p2p_if_type(wpa_s->p2p_group_interface); + wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0); + wpa_s = global->ifaces; + if (wpa_s && ifname) + wpa_drv_if_remove(wpa_s, type, ifname); + os_free(ifname); + return 1; + } + + wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network"); + if (ssid && (ssid->p2p_group || + ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION || + (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) { + int id = ssid->id; + if (ssid == wpa_s->current_ssid) { + wpa_sm_set_config(wpa_s->wpa, NULL); + eapol_sm_notify_config(wpa_s->eapol, NULL, NULL); + wpa_s->current_ssid = NULL; + } + /* + * Networks objects created during any P2P activities are not + * exposed out as they might/will confuse certain non-P2P aware + * applications since these network objects won't behave like + * regular ones. + * + * Likewise, we don't send out network removed signals for such + * network objects. + */ + wpa_config_remove_network(wpa_s->conf, id); + wpa_supplicant_clear_status(wpa_s); + wpa_supplicant_cancel_sched_scan(wpa_s); + wpa_s->sta_scan_pending = 0; + } else { + wpa_printf(MSG_DEBUG, "P2P: Temporary group network not " + "found"); + } + if (wpa_s->ap_iface) + wpa_supplicant_ap_deinit(wpa_s); + else + wpa_drv_deinit_p2p_cli(wpa_s); + + return 0; +} + + +static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s, + u8 *go_dev_addr, + const u8 *ssid, size_t ssid_len) +{ + struct wpa_bss *bss; + const u8 *bssid; + struct wpabuf *p2p; + u8 group_capab; + const u8 *addr; + + if (wpa_s->go_params) + bssid = wpa_s->go_params->peer_interface_addr; + else + bssid = wpa_s->bssid; + + bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len); + if (bss == NULL) { + u8 iface_addr[ETH_ALEN]; + if (p2p_get_interface_addr(wpa_s->global->p2p, bssid, + iface_addr) == 0) + bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len); + } + if (bss == NULL) { + wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " + "group is persistent - BSS " MACSTR " not found", + MAC2STR(bssid)); + return 0; + } + + p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); + if (p2p == NULL) { + wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether " + "group is persistent - BSS " MACSTR + " did not include P2P IE", MAC2STR(bssid)); + wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs", + (u8 *) (bss + 1), bss->ie_len); + wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs", + ((u8 *) bss + 1) + bss->ie_len, + bss->beacon_ie_len); + return 0; + } + + group_capab = p2p_get_group_capab(p2p); + addr = p2p_get_go_dev_addr(p2p); + wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: " + "group_capab=0x%x", group_capab); + if (addr) { + os_memcpy(go_dev_addr, addr, ETH_ALEN); + wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR, + MAC2STR(addr)); + } else + os_memset(go_dev_addr, 0, ETH_ALEN); + wpabuf_free(p2p); + + wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x " + "go_dev_addr=" MACSTR, + MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr)); + + return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP; +} + + +static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s, + struct wpa_ssid *ssid, + const u8 *go_dev_addr) +{ + struct wpa_ssid *s; + int changed = 0; + + wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent " + "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr)); + for (s = wpa_s->conf->ssid; s; s = s->next) { + if (s->disabled == 2 && + os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 && + s->ssid_len == ssid->ssid_len && + os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0) + break; + } + + if (s) { + wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group " + "entry"); + if (ssid->passphrase && !s->passphrase) + changed = 1; + else if (ssid->passphrase && s->passphrase && + os_strcmp(ssid->passphrase, s->passphrase) != 0) + changed = 1; + } else { + wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group " + "entry"); + changed = 1; + s = wpa_config_add_network(wpa_s->conf); + if (s == NULL) + return -1; + + /* + * Instead of network_added we emit persistent_group_added + * notification. Also to keep the defense checks in + * persistent_group obj registration method, we set the + * relevant flags in s to designate it as a persistent group. + */ + s->p2p_group = 1; + s->p2p_persistent_group = 1; + wpas_notify_persistent_group_added(wpa_s, s); + wpa_config_set_network_defaults(s); + } + + s->p2p_group = 1; + s->p2p_persistent_group = 1; + s->disabled = 2; + s->bssid_set = 1; + os_memcpy(s->bssid, go_dev_addr, ETH_ALEN); + s->mode = ssid->mode; + s->auth_alg = WPA_AUTH_ALG_OPEN; + s->key_mgmt = WPA_KEY_MGMT_PSK; + s->proto = WPA_PROTO_RSN; + s->pairwise_cipher = WPA_CIPHER_CCMP; + s->export_keys = 1; + if (ssid->passphrase) { + os_free(s->passphrase); + s->passphrase = os_strdup(ssid->passphrase); + } + if (ssid->psk_set) { + s->psk_set = 1; + os_memcpy(s->psk, ssid->psk, 32); + } + if (s->passphrase && !s->psk_set) + wpa_config_update_psk(s); + if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) { + os_free(s->ssid); + s->ssid = os_malloc(ssid->ssid_len); + } + if (s->ssid) { + s->ssid_len = ssid->ssid_len; + os_memcpy(s->ssid, ssid->ssid, s->ssid_len); + } + +#ifndef CONFIG_NO_CONFIG_WRITE + if (changed && wpa_s->conf->update_config && + wpa_config_write(wpa_s->confname, wpa_s->conf)) { + wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); + } +#endif /* CONFIG_NO_CONFIG_WRITE */ + + return s->id; +} + + +static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s, + const u8 *addr) +{ + struct wpa_ssid *ssid, *s; + u8 *n; + size_t i; + int found = 0; + + ssid = wpa_s->current_ssid; + if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO || + !ssid->p2p_persistent_group) + return; + + for (s = wpa_s->parent->conf->ssid; s; s = s->next) { + if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO) + continue; + + if (s->ssid_len == ssid->ssid_len && + os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0) + break; + } + + if (s == NULL) + return; + + for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) { + if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr, + ETH_ALEN) != 0) + continue; + + if (i == s->num_p2p_clients - 1) + return; /* already the most recent entry */ + + /* move the entry to mark it most recent */ + os_memmove(s->p2p_client_list + i * ETH_ALEN, + s->p2p_client_list + (i + 1) * ETH_ALEN, + (s->num_p2p_clients - i - 1) * ETH_ALEN); + os_memcpy(s->p2p_client_list + + (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN); + found = 1; + break; + } + + if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) { + n = os_realloc_array(s->p2p_client_list, + s->num_p2p_clients + 1, ETH_ALEN); + if (n == NULL) + return; + os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN); + s->p2p_client_list = n; + s->num_p2p_clients++; + } else if (!found) { + /* Not enough room for an additional entry - drop the oldest + * entry */ + os_memmove(s->p2p_client_list, + s->p2p_client_list + ETH_ALEN, + (s->num_p2p_clients - 1) * ETH_ALEN); + os_memcpy(s->p2p_client_list + + (s->num_p2p_clients - 1) * ETH_ALEN, + addr, ETH_ALEN); + } + +#ifndef CONFIG_NO_CONFIG_WRITE + if (wpa_s->parent->conf->update_config && + wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf)) + wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration"); +#endif /* CONFIG_NO_CONFIG_WRITE */ +} + + +static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s, + int success) +{ + struct wpa_ssid *ssid; + const char *ssid_txt; + int client; + int persistent; + u8 go_dev_addr[ETH_ALEN]; + int network_id = -1; + + /* + * This callback is likely called for the main interface. Update wpa_s + * to use the group interface if a new interface was created for the + * group. + */ + if (wpa_s->global->p2p_group_formation) + wpa_s = wpa_s->global->p2p_group_formation; + wpa_s->global->p2p_group_formation = NULL; + wpa_s->p2p_in_provisioning = 0; + + if (!success) { + wpa_msg(wpa_s->parent, MSG_INFO, + P2P_EVENT_GROUP_FORMATION_FAILURE); + wpas_p2p_group_delete(wpa_s, + P2P_GROUP_REMOVAL_FORMATION_FAILED); + return; + } + + wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS); + + ssid = wpa_s->current_ssid; + if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) { + ssid->mode = WPAS_MODE_P2P_GO; + p2p_group_notif_formation_done(wpa_s->p2p_group); + wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL); + } + + persistent = 0; + if (ssid) { + ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); + client = ssid->mode == WPAS_MODE_INFRA; + if (ssid->mode == WPAS_MODE_P2P_GO) { + persistent = ssid->p2p_persistent_group; + os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr, + ETH_ALEN); + } else + persistent = wpas_p2p_persistent_group(wpa_s, + go_dev_addr, + ssid->ssid, + ssid->ssid_len); + } else { + ssid_txt = ""; + client = wpa_s->p2p_group_interface == + P2P_GROUP_INTERFACE_CLIENT; + os_memset(go_dev_addr, 0, ETH_ALEN); + } + + wpa_s->show_group_started = 0; + if (client) { + /* + * Indicate event only after successfully completed 4-way + * handshake, i.e., when the interface is ready for data + * packets. + */ + wpa_s->show_group_started = 1; + } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) { + char psk[65]; + wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); + wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED + "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR + "%s", + wpa_s->ifname, ssid_txt, ssid->frequency, psk, + MAC2STR(go_dev_addr), + persistent ? " [PERSISTENT]" : ""); + wpas_p2p_cross_connect_setup(wpa_s); + wpas_p2p_set_group_idle_timeout(wpa_s); + } else { + wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED + "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " + "go_dev_addr=" MACSTR "%s", + wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0, + ssid && ssid->passphrase ? ssid->passphrase : "", + MAC2STR(go_dev_addr), + persistent ? " [PERSISTENT]" : ""); + wpas_p2p_cross_connect_setup(wpa_s); + wpas_p2p_set_group_idle_timeout(wpa_s); + } + + if (persistent) + network_id = wpas_p2p_store_persistent_group(wpa_s->parent, + ssid, go_dev_addr); + if (network_id < 0 && ssid) + network_id = ssid->id; + if (!client) + wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); +} + + +static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s, + unsigned int freq, + const u8 *dst, const u8 *src, + const u8 *bssid, + const u8 *data, size_t data_len, + enum offchannel_send_action_result + result) +{ + enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS; + + if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) + return; + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return; + + switch (result) { + case OFFCHANNEL_SEND_ACTION_SUCCESS: + res = P2P_SEND_ACTION_SUCCESS; + break; + case OFFCHANNEL_SEND_ACTION_NO_ACK: + res = P2P_SEND_ACTION_NO_ACK; + break; + case OFFCHANNEL_SEND_ACTION_FAILED: + res = P2P_SEND_ACTION_FAILED; + break; + } + + p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res); + + if (result != OFFCHANNEL_SEND_ACTION_SUCCESS && + wpa_s->pending_pd_before_join && + (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || + os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) && + wpa_s->p2p_fallback_to_go_neg) { + wpa_s->pending_pd_before_join = 0; + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req " + "during p2p_connect-auto"); + wpas_p2p_fallback_to_go_neg(wpa_s, 0); + return; + } +} + + +static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst, + const u8 *src, const u8 *bssid, const u8 *buf, + size_t len, unsigned int wait_time) +{ + struct wpa_supplicant *wpa_s = ctx; + return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len, + wait_time, + wpas_p2p_send_action_tx_status, 1); +} + + +static void wpas_send_action_done(void *ctx) +{ + struct wpa_supplicant *wpa_s = ctx; + offchannel_send_action_done(wpa_s); +} + + +static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s, + struct p2p_go_neg_results *params) +{ + if (wpa_s->go_params == NULL) { + wpa_s->go_params = os_malloc(sizeof(*params)); + if (wpa_s->go_params == NULL) + return -1; + } + os_memcpy(wpa_s->go_params, params, sizeof(*params)); + return 0; +} + + +static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s, + struct p2p_go_neg_results *res) +{ + wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR, + MAC2STR(res->peer_interface_addr)); + wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID", + res->ssid, res->ssid_len); + wpa_supplicant_ap_deinit(wpa_s); + wpas_copy_go_neg_results(wpa_s, res); + if (res->wps_method == WPS_PBC) + wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1); + else { + u16 dev_pw_id = DEV_PW_DEFAULT; + if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD) + dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED; + wpas_wps_start_pin(wpa_s, res->peer_interface_addr, + wpa_s->p2p_pin, 1, dev_pw_id); + } +} + + +static void p2p_go_configured(void *ctx, void *data) +{ + struct wpa_supplicant *wpa_s = ctx; + struct p2p_go_neg_results *params = data; + struct wpa_ssid *ssid; + int network_id = -1; + + ssid = wpa_s->current_ssid; + if (ssid && ssid->mode == WPAS_MODE_P2P_GO) { + wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning"); + if (wpa_s->global->p2p_group_formation == wpa_s) + wpa_s->global->p2p_group_formation = NULL; + if (os_strlen(params->passphrase) > 0) { + wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED + "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" " + "go_dev_addr=" MACSTR "%s", wpa_s->ifname, + wpa_ssid_txt(ssid->ssid, ssid->ssid_len), + ssid->frequency, params->passphrase, + MAC2STR(wpa_s->global->p2p_dev_addr), + params->persistent_group ? " [PERSISTENT]" : + ""); + } else { + char psk[65]; + wpa_snprintf_hex(psk, sizeof(psk), params->psk, + sizeof(params->psk)); + wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED + "%s GO ssid=\"%s\" freq=%d psk=%s " + "go_dev_addr=" MACSTR "%s", wpa_s->ifname, + wpa_ssid_txt(ssid->ssid, ssid->ssid_len), + ssid->frequency, psk, + MAC2STR(wpa_s->global->p2p_dev_addr), + params->persistent_group ? " [PERSISTENT]" : + ""); + } + + if (params->persistent_group) + network_id = wpas_p2p_store_persistent_group( + wpa_s->parent, ssid, + wpa_s->global->p2p_dev_addr); + if (network_id < 0) + network_id = ssid->id; + wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0); + wpas_p2p_cross_connect_setup(wpa_s); + wpas_p2p_set_group_idle_timeout(wpa_s); + return; + } + + wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning"); + if (wpa_supplicant_ap_mac_addr_filter(wpa_s, + params->peer_interface_addr)) { + wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address " + "filtering"); + return; + } + if (params->wps_method == WPS_PBC) + wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr, + params->peer_device_addr); + else if (wpa_s->p2p_pin[0]) + wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr, + wpa_s->p2p_pin, NULL, 0, 0); + os_free(wpa_s->go_params); + wpa_s->go_params = NULL; +} + + +static void wpas_start_wps_go(struct wpa_supplicant *wpa_s, + struct p2p_go_neg_results *params, + int group_formation) +{ + struct wpa_ssid *ssid; + + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO"); + if (wpas_copy_go_neg_results(wpa_s, params) < 0) { + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation " + "results"); + return; + } + + ssid = wpa_config_add_network(wpa_s->conf); + if (ssid == NULL) { + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO"); + return; + } + + wpa_s->show_group_started = 0; + + wpa_config_set_network_defaults(ssid); + ssid->temporary = 1; + ssid->p2p_group = 1; + ssid->p2p_persistent_group = params->persistent_group; + ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION : + WPAS_MODE_P2P_GO; + ssid->frequency = params->freq; + ssid->ht40 = params->ht40; + ssid->ssid = os_zalloc(params->ssid_len + 1); + if (ssid->ssid) { + os_memcpy(ssid->ssid, params->ssid, params->ssid_len); + ssid->ssid_len = params->ssid_len; + } + ssid->auth_alg = WPA_AUTH_ALG_OPEN; + ssid->key_mgmt = WPA_KEY_MGMT_PSK; + ssid->proto = WPA_PROTO_RSN; + ssid->pairwise_cipher = WPA_CIPHER_CCMP; + if (os_strlen(params->passphrase) > 0) { + ssid->passphrase = os_strdup(params->passphrase); + if (ssid->passphrase == NULL) { + wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy " + "passphrase for GO"); + wpa_config_remove_network(wpa_s->conf, ssid->id); + return; + } + } else + ssid->passphrase = NULL; + ssid->psk_set = params->psk_set; + if (ssid->psk_set) + os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk)); + else if (ssid->passphrase) + wpa_config_update_psk(ssid); + ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity; + + wpa_s->ap_configured_cb = p2p_go_configured; + wpa_s->ap_configured_cb_ctx = wpa_s; + wpa_s->ap_configured_cb_data = wpa_s->go_params; + wpa_s->connect_without_scan = ssid; + wpa_s->reassociate = 1; + wpa_s->disconnected = 0; + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to " + "start GO)"); + wpa_supplicant_req_scan(wpa_s, 0, 0); +} + + +static void wpas_p2p_clone_config(struct wpa_supplicant *dst, + const struct wpa_supplicant *src) +{ + struct wpa_config *d; + const struct wpa_config *s; + + d = dst->conf; + s = src->conf; + +#define C(n) if (s->n) d->n = os_strdup(s->n) + C(device_name); + C(manufacturer); + C(model_name); + C(model_number); + C(serial_number); + C(config_methods); +#undef C + + os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN); + os_memcpy(d->sec_device_type, s->sec_device_type, + sizeof(d->sec_device_type)); + d->num_sec_device_types = s->num_sec_device_types; + + d->p2p_group_idle = s->p2p_group_idle; + d->p2p_intra_bss = s->p2p_intra_bss; + d->persistent_reconnect = s->persistent_reconnect; + d->max_num_sta = s->max_num_sta; + d->pbc_in_m1 = s->pbc_in_m1; +} + + +static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s, + enum wpa_driver_if_type type) +{ + char ifname[120], force_ifname[120]; + + if (wpa_s->pending_interface_name[0]) { + wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists " + "- skip creation of a new one"); + if (is_zero_ether_addr(wpa_s->pending_interface_addr)) { + wpa_printf(MSG_DEBUG, "P2P: Pending virtual address " + "unknown?! ifname='%s'", + wpa_s->pending_interface_name); + return -1; + } + return 0; + } + + os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname, + wpa_s->p2p_group_idx); + if (os_strlen(ifname) >= IFNAMSIZ && + os_strlen(wpa_s->ifname) < IFNAMSIZ) { + /* Try to avoid going over the IFNAMSIZ length limit */ + os_snprintf(ifname, sizeof(ifname), "p2p-%d", + wpa_s->p2p_group_idx); + } + force_ifname[0] = '\0'; + + wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group", + ifname); + wpa_s->p2p_group_idx++; + + wpa_s->pending_interface_type = type; + if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname, + wpa_s->pending_interface_addr, NULL) < 0) { + wpa_printf(MSG_ERROR, "P2P: Failed to create new group " + "interface"); + return -1; + } + + if (force_ifname[0]) { + wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s", + force_ifname); + os_strlcpy(wpa_s->pending_interface_name, force_ifname, + sizeof(wpa_s->pending_interface_name)); + } else + os_strlcpy(wpa_s->pending_interface_name, ifname, + sizeof(wpa_s->pending_interface_name)); + wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr " + MACSTR, wpa_s->pending_interface_name, + MAC2STR(wpa_s->pending_interface_addr)); + + return 0; +} + + +static void wpas_p2p_remove_pending_group_interface( + struct wpa_supplicant *wpa_s) +{ + if (!wpa_s->pending_interface_name[0] || + is_zero_ether_addr(wpa_s->pending_interface_addr)) + return; /* No pending virtual interface */ + + wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s", + wpa_s->pending_interface_name); + wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type, + wpa_s->pending_interface_name); + os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); + wpa_s->pending_interface_name[0] = '\0'; +} + + +static struct wpa_supplicant * +wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go) +{ + struct wpa_interface iface; + struct wpa_supplicant *group_wpa_s; + + if (!wpa_s->pending_interface_name[0]) { + wpa_printf(MSG_ERROR, "P2P: No pending group interface"); + if (!wpas_p2p_create_iface(wpa_s)) + return NULL; + /* + * Something has forced us to remove the pending interface; try + * to create a new one and hope for the best that we will get + * the same local address. + */ + if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : + WPA_IF_P2P_CLIENT) < 0) + return NULL; + } + + os_memset(&iface, 0, sizeof(iface)); + iface.ifname = wpa_s->pending_interface_name; + iface.driver = wpa_s->driver->name; + iface.ctrl_interface = wpa_s->conf->ctrl_interface; + iface.driver_param = wpa_s->conf->driver_param; + group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface); + if (group_wpa_s == NULL) { + wpa_printf(MSG_ERROR, "P2P: Failed to create new " + "wpa_supplicant interface"); + return NULL; + } + wpa_s->pending_interface_name[0] = '\0'; + group_wpa_s->parent = wpa_s; + group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO : + P2P_GROUP_INTERFACE_CLIENT; + wpa_s->global->p2p_group_formation = group_wpa_s; + + wpas_p2p_clone_config(group_wpa_s, wpa_s); + + return group_wpa_s; +} + + +static void wpas_p2p_group_formation_timeout(void *eloop_ctx, + void *timeout_ctx) +{ + struct wpa_supplicant *wpa_s = eloop_ctx; + wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out"); + if (wpa_s->global->p2p) + p2p_group_formation_failed(wpa_s->global->p2p); + else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + wpa_drv_p2p_group_formation_failed(wpa_s); + wpas_group_formation_completed(wpa_s, 0); +} + + +void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res) +{ + struct wpa_supplicant *wpa_s = ctx; + + if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { + wpa_drv_cancel_remain_on_channel(wpa_s); + wpa_s->off_channel_freq = 0; + wpa_s->roc_waiting_drv_freq = 0; + } + + if (res->status) { + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d", + res->status); + wpas_notify_p2p_go_neg_completed(wpa_s, res); + wpas_p2p_remove_pending_group_interface(wpa_s); + return; + } + + if (wpa_s->p2p_go_ht40) + res->ht40 = 1; + + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS); + wpas_notify_p2p_go_neg_completed(wpa_s, res); + + if (res->role_go && wpa_s->p2p_persistent_id >= 0) { + struct wpa_ssid *ssid; + ssid = wpa_config_get_network(wpa_s->conf, + wpa_s->p2p_persistent_id); + if (ssid && ssid->disabled == 2 && + ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) { + size_t len = os_strlen(ssid->passphrase); + wpa_printf(MSG_DEBUG, "P2P: Override passphrase based " + "on requested persistent group"); + os_memcpy(res->passphrase, ssid->passphrase, len); + res->passphrase[len] = '\0'; + } + } + + if (wpa_s->create_p2p_iface) { + struct wpa_supplicant *group_wpa_s = + wpas_p2p_init_group_interface(wpa_s, res->role_go); + if (group_wpa_s == NULL) { + wpas_p2p_remove_pending_group_interface(wpa_s); + return; + } + if (group_wpa_s != wpa_s) { + os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin, + sizeof(group_wpa_s->p2p_pin)); + group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method; + } + os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN); + wpa_s->pending_interface_name[0] = '\0'; + group_wpa_s->p2p_in_provisioning = 1; + + if (res->role_go) + wpas_start_wps_go(group_wpa_s, res, 1); + else + wpas_start_wps_enrollee(group_wpa_s, res); + } else { + wpa_s->p2p_in_provisioning = 1; + wpa_s->global->p2p_group_formation = wpa_s; + + if (res->role_go) + wpas_start_wps_go(wpa_s, res, 1); + else + wpas_start_wps_enrollee(ctx, res); + } + + wpa_s->p2p_long_listen = 0; + eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); + + eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); + eloop_register_timeout(15 + res->peer_config_timeout / 100, + (res->peer_config_timeout % 100) * 10000, + wpas_p2p_group_formation_timeout, wpa_s, NULL); +} + + +void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id) +{ + struct wpa_supplicant *wpa_s = ctx; + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR + " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id); + + wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id); +} + + +void wpas_dev_found(void *ctx, const u8 *addr, + const struct p2p_peer_info *info, + int new_device) +{ +#ifndef CONFIG_NO_STDOUT_DEBUG + struct wpa_supplicant *wpa_s = ctx; + char devtype[WPS_DEV_TYPE_BUFSIZE]; + + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR + " p2p_dev_addr=" MACSTR + " pri_dev_type=%s name='%s' config_methods=0x%x " + "dev_capab=0x%x group_capab=0x%x", + MAC2STR(addr), MAC2STR(info->p2p_device_addr), + wps_dev_type_bin2str(info->pri_dev_type, devtype, + sizeof(devtype)), + info->device_name, info->config_methods, + info->dev_capab, info->group_capab); +#endif /* CONFIG_NO_STDOUT_DEBUG */ + + wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device); +} + + +static void wpas_dev_lost(void *ctx, const u8 *dev_addr) +{ + struct wpa_supplicant *wpa_s = ctx; + + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST + "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr)); + + wpas_notify_p2p_device_lost(wpa_s, dev_addr); +} + + +static int wpas_start_listen(void *ctx, unsigned int freq, + unsigned int duration, + const struct wpabuf *probe_resp_ie) +{ + struct wpa_supplicant *wpa_s = ctx; + + wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL); + + if (wpa_drv_probe_req_report(wpa_s, 1) < 0) { + wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to " + "report received Probe Request frames"); + return -1; + } + + wpa_s->pending_listen_freq = freq; + wpa_s->pending_listen_duration = duration; + + if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) { + wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver " + "to remain on channel (%u MHz) for Listen " + "state", freq); + wpa_s->pending_listen_freq = 0; + return -1; + } + wpa_s->off_channel_freq = 0; + wpa_s->roc_waiting_drv_freq = freq; + + return 0; +} + + +static void wpas_stop_listen(void *ctx) +{ + struct wpa_supplicant *wpa_s = ctx; + if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { + wpa_drv_cancel_remain_on_channel(wpa_s); + wpa_s->off_channel_freq = 0; + wpa_s->roc_waiting_drv_freq = 0; + } + wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL); + wpa_drv_probe_req_report(wpa_s, 0); +} + + +static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf) +{ + struct wpa_supplicant *wpa_s = ctx; + return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1); +} + + +/* + * DNS Header section is used only to calculate compression pointers, so the + * contents of this data does not matter, but the length needs to be reserved + * in the virtual packet. + */ +#define DNS_HEADER_LEN 12 + +/* + * 27-octet in-memory packet from P2P specification containing two implied + * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN + */ +#define P2P_SD_IN_MEMORY_LEN 27 + +static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start, + u8 **spos, const u8 *end) +{ + while (*spos < end) { + u8 val = ((*spos)[0] & 0xc0) >> 6; + int len; + + if (val == 1 || val == 2) { + /* These are reserved values in RFC 1035 */ + wpa_printf(MSG_DEBUG, "P2P: Invalid domain name " + "sequence starting with 0x%x", val); + return -1; + } + + if (val == 3) { + u16 offset; + u8 *spos_tmp; + + /* Offset */ + if (*spos + 2 > end) { + wpa_printf(MSG_DEBUG, "P2P: No room for full " + "DNS offset field"); + return -1; + } + + offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1]; + if (offset >= *spos - start) { + wpa_printf(MSG_DEBUG, "P2P: Invalid DNS " + "pointer offset %u", offset); + return -1; + } + + (*spos) += 2; + spos_tmp = start + offset; + return p2p_sd_dns_uncompress_label(upos, uend, start, + &spos_tmp, + *spos - 2); + } + + /* Label */ + len = (*spos)[0] & 0x3f; + if (len == 0) + return 0; + + (*spos)++; + if (*spos + len > end) { + wpa_printf(MSG_DEBUG, "P2P: Invalid domain name " + "sequence - no room for label with length " + "%u", len); + return -1; + } + + if (*upos + len + 2 > uend) + return -2; + + os_memcpy(*upos, *spos, len); + *spos += len; + *upos += len; + (*upos)[0] = '.'; + (*upos)++; + (*upos)[0] = '\0'; + } + + return 0; +} + + +/* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet. + * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is + * not large enough */ +static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg, + size_t msg_len, size_t offset) +{ + /* 27-octet in-memory packet from P2P specification */ + const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01" + "\x04_udp\xC0\x11\x00\x0C\x00\x01"; + u8 *tmp, *end, *spos; + char *upos, *uend; + int ret = 0; + + if (buf_len < 2) + return -1; + if (offset > msg_len) + return -1; + + tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len); + if (tmp == NULL) + return -1; + spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN; + end = spos + msg_len; + spos += offset; + + os_memset(tmp, 0, DNS_HEADER_LEN); + os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN); + os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len); + + upos = buf; + uend = buf + buf_len; + + ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end); + if (ret) { + os_free(tmp); + return ret; + } + + if (upos == buf) { + upos[0] = '.'; + upos[1] = '\0'; + } else if (upos[-1] == '.') + upos[-1] = '\0'; + + os_free(tmp); + return 0; +} + + +static struct p2p_srv_bonjour * +wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s, + const struct wpabuf *query) +{ + struct p2p_srv_bonjour *bsrv; + size_t len; + + len = wpabuf_len(query); + dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, + struct p2p_srv_bonjour, list) { + if (len == wpabuf_len(bsrv->query) && + os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query), + len) == 0) + return bsrv; + } + return NULL; +} + + +static struct p2p_srv_upnp * +wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version, + const char *service) +{ + struct p2p_srv_upnp *usrv; + + dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, + struct p2p_srv_upnp, list) { + if (version == usrv->version && + os_strcmp(service, usrv->service) == 0) + return usrv; + } + return NULL; +} + + +static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto, + u8 srv_trans_id) +{ + u8 *len_pos; + + if (wpabuf_tailroom(resp) < 5) + return; + + /* Length (to be filled) */ + len_pos = wpabuf_put(resp, 2); + wpabuf_put_u8(resp, srv_proto); + wpabuf_put_u8(resp, srv_trans_id); + /* Status Code */ + wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE); + /* Response Data: empty */ + WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); +} + + +static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s, + struct wpabuf *resp, u8 srv_trans_id) +{ + struct p2p_srv_bonjour *bsrv; + u8 *len_pos; + + wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services"); + + if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { + wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); + return; + } + + dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, + struct p2p_srv_bonjour, list) { + if (wpabuf_tailroom(resp) < + 5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) + return; + /* Length (to be filled) */ + len_pos = wpabuf_put(resp, 2); + wpabuf_put_u8(resp, P2P_SERV_BONJOUR); + wpabuf_put_u8(resp, srv_trans_id); + /* Status Code */ + wpabuf_put_u8(resp, P2P_SD_SUCCESS); + wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", + wpabuf_head(bsrv->resp), + wpabuf_len(bsrv->resp)); + /* Response Data */ + wpabuf_put_buf(resp, bsrv->query); /* Key */ + wpabuf_put_buf(resp, bsrv->resp); /* Value */ + WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - + 2); + } +} + + +static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query, + size_t query_len) +{ + char str_rx[256], str_srv[256]; + + if (query_len < 3 || wpabuf_len(bsrv->query) < 3) + return 0; /* Too short to include DNS Type and Version */ + if (os_memcmp(query + query_len - 3, + wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3, + 3) != 0) + return 0; /* Mismatch in DNS Type or Version */ + if (query_len == wpabuf_len(bsrv->query) && + os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0) + return 1; /* Binary match */ + + if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3, + 0)) + return 0; /* Failed to uncompress query */ + if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv), + wpabuf_head(bsrv->query), + wpabuf_len(bsrv->query) - 3, 0)) + return 0; /* Failed to uncompress service */ + + return os_strcmp(str_rx, str_srv) == 0; +} + + +static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s, + struct wpabuf *resp, u8 srv_trans_id, + const u8 *query, size_t query_len) +{ + struct p2p_srv_bonjour *bsrv; + u8 *len_pos; + int matches = 0; + + wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour", + query, query_len); + if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { + wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available"); + wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR, + srv_trans_id); + return; + } + + if (query_len == 0) { + wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); + return; + } + + dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour, + struct p2p_srv_bonjour, list) { + if (!match_bonjour_query(bsrv, query, query_len)) + continue; + + if (wpabuf_tailroom(resp) < + 5 + query_len + wpabuf_len(bsrv->resp)) + return; + + matches++; + + /* Length (to be filled) */ + len_pos = wpabuf_put(resp, 2); + wpabuf_put_u8(resp, P2P_SERV_BONJOUR); + wpabuf_put_u8(resp, srv_trans_id); + + /* Status Code */ + wpabuf_put_u8(resp, P2P_SD_SUCCESS); + wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service", + wpabuf_head(bsrv->resp), + wpabuf_len(bsrv->resp)); + + /* Response Data */ + wpabuf_put_data(resp, query, query_len); /* Key */ + wpabuf_put_buf(resp, bsrv->resp); /* Value */ + + WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); + } + + if (matches == 0) { + wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not " + "available"); + if (wpabuf_tailroom(resp) < 5) + return; + + /* Length (to be filled) */ + len_pos = wpabuf_put(resp, 2); + wpabuf_put_u8(resp, P2P_SERV_BONJOUR); + wpabuf_put_u8(resp, srv_trans_id); + + /* Status Code */ + wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); + /* Response Data: empty */ + WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - + 2); + } +} + + +static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s, + struct wpabuf *resp, u8 srv_trans_id) +{ + struct p2p_srv_upnp *usrv; + u8 *len_pos; + + wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services"); + + if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { + wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); + return; + } + + dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, + struct p2p_srv_upnp, list) { + if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service)) + return; + + /* Length (to be filled) */ + len_pos = wpabuf_put(resp, 2); + wpabuf_put_u8(resp, P2P_SERV_UPNP); + wpabuf_put_u8(resp, srv_trans_id); + + /* Status Code */ + wpabuf_put_u8(resp, P2P_SD_SUCCESS); + /* Response Data */ + wpabuf_put_u8(resp, usrv->version); + wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", + usrv->service); + wpabuf_put_str(resp, usrv->service); + WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - + 2); + } +} + + +static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s, + struct wpabuf *resp, u8 srv_trans_id, + const u8 *query, size_t query_len) +{ + struct p2p_srv_upnp *usrv; + u8 *len_pos; + u8 version; + char *str; + int count = 0; + + wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP", + query, query_len); + + if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) { + wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available"); + wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP, + srv_trans_id); + return; + } + + if (query_len == 0) { + wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); + return; + } + + if (wpabuf_tailroom(resp) < 5) + return; + + /* Length (to be filled) */ + len_pos = wpabuf_put(resp, 2); + wpabuf_put_u8(resp, P2P_SERV_UPNP); + wpabuf_put_u8(resp, srv_trans_id); + + version = query[0]; + str = os_malloc(query_len); + if (str == NULL) + return; + os_memcpy(str, query + 1, query_len - 1); + str[query_len - 1] = '\0'; + + dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp, + struct p2p_srv_upnp, list) { + if (version != usrv->version) + continue; + + if (os_strcmp(str, "ssdp:all") != 0 && + os_strstr(usrv->service, str) == NULL) + continue; + + if (wpabuf_tailroom(resp) < 2) + break; + if (count == 0) { + /* Status Code */ + wpabuf_put_u8(resp, P2P_SD_SUCCESS); + /* Response Data */ + wpabuf_put_u8(resp, version); + } else + wpabuf_put_u8(resp, ','); + + count++; + + wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s", + usrv->service); + if (wpabuf_tailroom(resp) < os_strlen(usrv->service)) + break; + wpabuf_put_str(resp, usrv->service); + } + os_free(str); + + if (count == 0) { + wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not " + "available"); + /* Status Code */ + wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE); + /* Response Data: empty */ + } + + WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); +} + + +#ifdef CONFIG_WIFI_DISPLAY +static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s, + struct wpabuf *resp, u8 srv_trans_id, + const u8 *query, size_t query_len) +{ + const u8 *pos; + u8 role; + u8 *len_pos; + + wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len); + + if (!wpa_s->global->wifi_display) { + wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available"); + wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY, + srv_trans_id); + return; + } + + if (query_len < 1) { + wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device " + "Role"); + return; + } + + if (wpabuf_tailroom(resp) < 5) + return; + + pos = query; + role = *pos++; + wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role); + + /* TODO: role specific handling */ + + /* Length (to be filled) */ + len_pos = wpabuf_put(resp, 2); + wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY); + wpabuf_put_u8(resp, srv_trans_id); + wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */ + + while (pos < query + query_len) { + if (*pos < MAX_WFD_SUBELEMS && + wpa_s->global->wfd_subelem[*pos] && + wpabuf_tailroom(resp) >= + wpabuf_len(wpa_s->global->wfd_subelem[*pos])) { + wpa_printf(MSG_DEBUG, "P2P: Add WSD response " + "subelement %u", *pos); + wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]); + } + pos++; + } + + WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2); +} +#endif /* CONFIG_WIFI_DISPLAY */ + + +void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token, + u16 update_indic, const u8 *tlvs, size_t tlvs_len) +{ + struct wpa_supplicant *wpa_s = ctx; + const u8 *pos = tlvs; + const u8 *end = tlvs + tlvs_len; + const u8 *tlv_end; + u16 slen; + struct wpabuf *resp; + u8 srv_proto, srv_trans_id; + size_t buf_len; + char *buf; + + wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs", + tlvs, tlvs_len); + buf_len = 2 * tlvs_len + 1; + buf = os_malloc(buf_len); + if (buf) { + wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); + wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d " + MACSTR " %u %u %s", + freq, MAC2STR(sa), dialog_token, update_indic, + buf); + os_free(buf); + } + + if (wpa_s->p2p_sd_over_ctrl_iface) { + wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, + update_indic, tlvs, tlvs_len); + return; /* to be processed by an external program */ + } + + resp = wpabuf_alloc(10000); + if (resp == NULL) + return; + + while (pos + 1 < end) { + wpa_printf(MSG_DEBUG, "P2P: Service Request TLV"); + slen = WPA_GET_LE16(pos); + pos += 2; + if (pos + slen > end || slen < 2) { + wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data " + "length"); + wpabuf_free(resp); + return; + } + tlv_end = pos + slen; + + srv_proto = *pos++; + wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", + srv_proto); + srv_trans_id = *pos++; + wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", + srv_trans_id); + + wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data", + pos, tlv_end - pos); + + + if (wpa_s->force_long_sd) { + wpa_printf(MSG_DEBUG, "P2P: SD test - force long " + "response"); + wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); + wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); + goto done; + } + + switch (srv_proto) { + case P2P_SERV_ALL_SERVICES: + wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request " + "for all services"); + if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) && + dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) { + wpa_printf(MSG_DEBUG, "P2P: No service " + "discovery protocols available"); + wpas_sd_add_proto_not_avail( + resp, P2P_SERV_ALL_SERVICES, + srv_trans_id); + break; + } + wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id); + wpas_sd_all_upnp(wpa_s, resp, srv_trans_id); + break; + case P2P_SERV_BONJOUR: + wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id, + pos, tlv_end - pos); + break; + case P2P_SERV_UPNP: + wpas_sd_req_upnp(wpa_s, resp, srv_trans_id, + pos, tlv_end - pos); + break; +#ifdef CONFIG_WIFI_DISPLAY + case P2P_SERV_WIFI_DISPLAY: + wpas_sd_req_wfd(wpa_s, resp, srv_trans_id, + pos, tlv_end - pos); + break; +#endif /* CONFIG_WIFI_DISPLAY */ + default: + wpa_printf(MSG_DEBUG, "P2P: Unavailable service " + "protocol %u", srv_proto); + wpas_sd_add_proto_not_avail(resp, srv_proto, + srv_trans_id); + break; + } + + pos = tlv_end; + } + +done: + wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token, + update_indic, tlvs, tlvs_len); + + wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp); + + wpabuf_free(resp); +} + + +void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic, + const u8 *tlvs, size_t tlvs_len) +{ + struct wpa_supplicant *wpa_s = ctx; + const u8 *pos = tlvs; + const u8 *end = tlvs + tlvs_len; + const u8 *tlv_end; + u16 slen; + size_t buf_len; + char *buf; + + wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs", + tlvs, tlvs_len); + if (tlvs_len > 1500) { + /* TODO: better way for handling this */ + wpa_msg_ctrl(wpa_s, MSG_INFO, + P2P_EVENT_SERV_DISC_RESP MACSTR + " %u <long response: %u bytes>", + MAC2STR(sa), update_indic, + (unsigned int) tlvs_len); + } else { + buf_len = 2 * tlvs_len + 1; + buf = os_malloc(buf_len); + if (buf) { + wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len); + wpa_msg_ctrl(wpa_s, MSG_INFO, + P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s", + MAC2STR(sa), update_indic, buf); + os_free(buf); + } + } + + while (pos < end) { + u8 srv_proto, srv_trans_id, status; + + wpa_printf(MSG_DEBUG, "P2P: Service Response TLV"); + slen = WPA_GET_LE16(pos); + pos += 2; + if (pos + slen > end || slen < 3) { + wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data " + "length"); + return; + } + tlv_end = pos + slen; + + srv_proto = *pos++; + wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u", + srv_proto); + srv_trans_id = *pos++; + wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u", + srv_trans_id); + status = *pos++; + wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u", + status); + + wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data", + pos, tlv_end - pos); + + pos = tlv_end; + } + + wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len); +} + + +u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst, + const struct wpabuf *tlvs) +{ + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs); + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return 0; + return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs); +} + + +u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst, + u8 version, const char *query) +{ + struct wpabuf *tlvs; + u64 ret; + + tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query)); + if (tlvs == NULL) + return 0; + wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query)); + wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */ + wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */ + wpabuf_put_u8(tlvs, version); + wpabuf_put_str(tlvs, query); + ret = wpas_p2p_sd_request(wpa_s, dst, tlvs); + wpabuf_free(tlvs); + return ret; +} + + +#ifdef CONFIG_WIFI_DISPLAY + +static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst, + const struct wpabuf *tlvs) +{ + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return 0; + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return 0; + return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs); +} + + +#define MAX_WFD_SD_SUBELEMS 20 + +static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role, + const char *subelems) +{ + u8 *len; + const char *pos; + int val; + int count = 0; + + len = wpabuf_put(tlvs, 2); + wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */ + wpabuf_put_u8(tlvs, id); /* Service Transaction ID */ + + wpabuf_put_u8(tlvs, role); + + pos = subelems; + while (*pos) { + val = atoi(pos); + if (val >= 0 && val < 256) { + wpabuf_put_u8(tlvs, val); + count++; + if (count == MAX_WFD_SD_SUBELEMS) + break; + } + pos = os_strchr(pos + 1, ','); + if (pos == NULL) + break; + pos++; + } + + WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2); +} + + +u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s, + const u8 *dst, const char *role) +{ + struct wpabuf *tlvs; + u64 ret; + const char *subelems; + u8 id = 1; + + subelems = os_strchr(role, ' '); + if (subelems == NULL) + return 0; + subelems++; + + tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS)); + if (tlvs == NULL) + return 0; + + if (os_strstr(role, "[source]")) + wfd_add_sd_req_role(tlvs, id++, 0x00, subelems); + if (os_strstr(role, "[pri-sink]")) + wfd_add_sd_req_role(tlvs, id++, 0x01, subelems); + if (os_strstr(role, "[sec-sink]")) + wfd_add_sd_req_role(tlvs, id++, 0x02, subelems); + if (os_strstr(role, "[source+sink]")) + wfd_add_sd_req_role(tlvs, id++, 0x03, subelems); + + ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs); + wpabuf_free(tlvs); + return ret; +} + +#endif /* CONFIG_WIFI_DISPLAY */ + + +int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req) +{ + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return wpa_drv_p2p_sd_cancel_request(wpa_s, req); + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + return p2p_sd_cancel_request(wpa_s->global->p2p, + (void *) (uintptr_t) req); +} + + +void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq, + const u8 *dst, u8 dialog_token, + const struct wpabuf *resp_tlvs) +{ + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { + wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token, + resp_tlvs); + return; + } + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return; + p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token, + resp_tlvs); +} + + +void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s) +{ + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { + wpa_drv_p2p_service_update(wpa_s); + return; + } + if (wpa_s->global->p2p) + p2p_sd_service_update(wpa_s->global->p2p); +} + + +static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv) +{ + dl_list_del(&bsrv->list); + wpabuf_free(bsrv->query); + wpabuf_free(bsrv->resp); + os_free(bsrv); +} + + +static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv) +{ + dl_list_del(&usrv->list); + os_free(usrv->service); + os_free(usrv); +} + + +void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s) +{ + struct p2p_srv_bonjour *bsrv, *bn; + struct p2p_srv_upnp *usrv, *un; + + dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour, + struct p2p_srv_bonjour, list) + wpas_p2p_srv_bonjour_free(bsrv); + + dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp, + struct p2p_srv_upnp, list) + wpas_p2p_srv_upnp_free(usrv); + + wpas_p2p_sd_service_update(wpa_s); +} + + +int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s, + struct wpabuf *query, struct wpabuf *resp) +{ + struct p2p_srv_bonjour *bsrv; + + bsrv = os_zalloc(sizeof(*bsrv)); + if (bsrv == NULL) + return -1; + bsrv->query = query; + bsrv->resp = resp; + dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list); + + wpas_p2p_sd_service_update(wpa_s); + return 0; +} + + +int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s, + const struct wpabuf *query) +{ + struct p2p_srv_bonjour *bsrv; + + bsrv = wpas_p2p_service_get_bonjour(wpa_s, query); + if (bsrv == NULL) + return -1; + wpas_p2p_srv_bonjour_free(bsrv); + wpas_p2p_sd_service_update(wpa_s); + return 0; +} + + +int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version, + const char *service) +{ + struct p2p_srv_upnp *usrv; + + if (wpas_p2p_service_get_upnp(wpa_s, version, service)) + return 0; /* Already listed */ + usrv = os_zalloc(sizeof(*usrv)); + if (usrv == NULL) + return -1; + usrv->version = version; + usrv->service = os_strdup(service); + if (usrv->service == NULL) { + os_free(usrv); + return -1; + } + dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list); + + wpas_p2p_sd_service_update(wpa_s); + return 0; +} + + +int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version, + const char *service) +{ + struct p2p_srv_upnp *usrv; + + usrv = wpas_p2p_service_get_upnp(wpa_s, version, service); + if (usrv == NULL) + return -1; + wpas_p2p_srv_upnp_free(usrv); + wpas_p2p_sd_service_update(wpa_s); + return 0; +} + + +static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s, + const u8 *peer, const char *params, + unsigned int generated_pin) +{ + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s", + MAC2STR(peer), generated_pin, params); +} + + +static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s, + const u8 *peer, const char *params) +{ + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s", + MAC2STR(peer), params); +} + + +void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods, + const u8 *dev_addr, const u8 *pri_dev_type, + const char *dev_name, u16 supp_config_methods, + u8 dev_capab, u8 group_capab, const u8 *group_id, + size_t group_id_len) +{ + struct wpa_supplicant *wpa_s = ctx; + char devtype[WPS_DEV_TYPE_BUFSIZE]; + char params[300]; + u8 empty_dev_type[8]; + unsigned int generated_pin = 0; + struct wpa_supplicant *group = NULL; + + if (group_id) { + for (group = wpa_s->global->ifaces; group; group = group->next) + { + struct wpa_ssid *s = group->current_ssid; + if (s != NULL && + s->mode == WPAS_MODE_P2P_GO && + group_id_len - ETH_ALEN == s->ssid_len && + os_memcmp(group_id + ETH_ALEN, s->ssid, + s->ssid_len) == 0) + break; + } + } + + if (pri_dev_type == NULL) { + os_memset(empty_dev_type, 0, sizeof(empty_dev_type)); + pri_dev_type = empty_dev_type; + } + os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR + " pri_dev_type=%s name='%s' config_methods=0x%x " + "dev_capab=0x%x group_capab=0x%x%s%s", + MAC2STR(dev_addr), + wps_dev_type_bin2str(pri_dev_type, devtype, + sizeof(devtype)), + dev_name, supp_config_methods, dev_capab, group_capab, + group ? " group=" : "", + group ? group->ifname : ""); + params[sizeof(params) - 1] = '\0'; + + if (config_methods & WPS_CONFIG_DISPLAY) { + generated_pin = wps_generate_pin(); + wpas_prov_disc_local_display(wpa_s, peer, params, + generated_pin); + } else if (config_methods & WPS_CONFIG_KEYPAD) + wpas_prov_disc_local_keypad(wpa_s, peer, params); + else if (config_methods & WPS_CONFIG_PUSHBUTTON) + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR + "%s", MAC2STR(peer), params); + + wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */, + P2P_PROV_DISC_SUCCESS, + config_methods, generated_pin); +} + + +void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods) +{ + struct wpa_supplicant *wpa_s = ctx; + unsigned int generated_pin = 0; + char params[20]; + + if (wpa_s->pending_pd_before_join && + (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 || + os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) { + wpa_s->pending_pd_before_join = 0; + wpa_printf(MSG_DEBUG, "P2P: Starting pending " + "join-existing-group operation"); + wpas_p2p_join_start(wpa_s); + return; + } + + if (wpa_s->pending_pd_use == AUTO_PD_JOIN || + wpa_s->pending_pd_use == AUTO_PD_GO_NEG) + os_snprintf(params, sizeof(params), " peer_go=%d", + wpa_s->pending_pd_use == AUTO_PD_JOIN); + else + params[0] = '\0'; + + if (config_methods & WPS_CONFIG_DISPLAY) + wpas_prov_disc_local_keypad(wpa_s, peer, params); + else if (config_methods & WPS_CONFIG_KEYPAD) { + generated_pin = wps_generate_pin(); + wpas_prov_disc_local_display(wpa_s, peer, params, + generated_pin); + } else if (config_methods & WPS_CONFIG_PUSHBUTTON) + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR + "%s", MAC2STR(peer), params); + + wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, + P2P_PROV_DISC_SUCCESS, + config_methods, generated_pin); +} + + +static void wpas_prov_disc_fail(void *ctx, const u8 *peer, + enum p2p_prov_disc_status status) +{ + struct wpa_supplicant *wpa_s = ctx; + + if (wpa_s->p2p_fallback_to_go_neg) { + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto " + "failed - fall back to GO Negotiation"); + wpas_p2p_fallback_to_go_neg(wpa_s, 0); + return; + } + + if (status == P2P_PROV_DISC_TIMEOUT_JOIN) { + wpa_s->pending_pd_before_join = 0; + wpa_printf(MSG_DEBUG, "P2P: Starting pending " + "join-existing-group operation (no ACK for PD " + "Req attempts)"); + wpas_p2p_join_start(wpa_s); + return; + } + + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE + " p2p_dev_addr=" MACSTR " status=%d", + MAC2STR(peer), status); + + wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */, + status, 0, 0); +} + + +static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid, + const u8 *go_dev_addr, const u8 *ssid, + size_t ssid_len, int *go, u8 *group_bssid, + int *force_freq, int persistent_group) +{ + struct wpa_supplicant *wpa_s = ctx; + struct wpa_ssid *s; + u8 cur_bssid[ETH_ALEN]; + int res; + struct wpa_supplicant *grp; + + if (!persistent_group) { + wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR + " to join an active group", MAC2STR(sa)); + if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) && + (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN) + == 0 || + os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) { + wpa_printf(MSG_DEBUG, "P2P: Accept previously " + "authorized invitation"); + goto accept_inv; + } + /* + * Do not accept the invitation automatically; notify user and + * request approval. + */ + return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; + } + + grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go); + if (grp) { + wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already " + "running persistent group"); + if (*go) + os_memcpy(group_bssid, grp->own_addr, ETH_ALEN); + goto accept_inv; + } + + if (!wpa_s->conf->persistent_reconnect) + return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; + + for (s = wpa_s->conf->ssid; s; s = s->next) { + if (s->disabled == 2 && + os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 && + s->ssid_len == ssid_len && + os_memcmp(ssid, s->ssid, ssid_len) == 0) + break; + } + + if (!s) { + wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR + " requested reinvocation of an unknown group", + MAC2STR(sa)); + return P2P_SC_FAIL_UNKNOWN_GROUP; + } + + if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) { + *go = 1; + if (wpa_s->wpa_state >= WPA_AUTHENTICATING) { + wpa_printf(MSG_DEBUG, "P2P: The only available " + "interface is already in use - reject " + "invitation"); + return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; + } + os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN); + } else if (s->mode == WPAS_MODE_P2P_GO) { + *go = 1; + if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0) + { + wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " + "interface address for the group"); + return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; + } + os_memcpy(group_bssid, wpa_s->pending_interface_addr, + ETH_ALEN); + } + +accept_inv: + if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 && + wpa_s->assoc_freq) { + wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " + "the channel we are already using"); + *force_freq = wpa_s->assoc_freq; + } + + res = wpa_drv_shared_freq(wpa_s); + if (res > 0) { + wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match " + "with the channel we are already using on a " + "shared interface"); + *force_freq = res; + } + + return P2P_SC_SUCCESS; +} + + +static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid, + const u8 *ssid, size_t ssid_len, + const u8 *go_dev_addr, u8 status, + int op_freq) +{ + struct wpa_supplicant *wpa_s = ctx; + struct wpa_ssid *s; + + for (s = wpa_s->conf->ssid; s; s = s->next) { + if (s->disabled == 2 && + s->ssid_len == ssid_len && + os_memcmp(ssid, s->ssid, ssid_len) == 0) + break; + } + + if (status == P2P_SC_SUCCESS) { + wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR + " was accepted; op_freq=%d MHz", + MAC2STR(sa), op_freq); + if (s) { + int go = s->mode == WPAS_MODE_P2P_GO; + wpas_p2p_group_add_persistent( + wpa_s, s, go, go ? op_freq : 0, 0); + } else if (bssid) { + wpa_s->user_initiated_pd = 0; + wpas_p2p_join(wpa_s, bssid, go_dev_addr, + wpa_s->p2p_wps_method, 0); + } + return; + } + + if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { + wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR + " was rejected (status %u)", MAC2STR(sa), status); + return; + } + + if (!s) { + if (bssid) { + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED + "sa=" MACSTR " go_dev_addr=" MACSTR + " bssid=" MACSTR " unknown-network", + MAC2STR(sa), MAC2STR(go_dev_addr), + MAC2STR(bssid)); + } else { + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED + "sa=" MACSTR " go_dev_addr=" MACSTR + " unknown-network", + MAC2STR(sa), MAC2STR(go_dev_addr)); + } + return; + } + + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR + " persistent=%d", MAC2STR(sa), s->id); +} + + +static void wpas_invitation_result(void *ctx, int status, const u8 *bssid) +{ + struct wpa_supplicant *wpa_s = ctx; + struct wpa_ssid *ssid; + + if (bssid) { + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT + "status=%d " MACSTR, + status, MAC2STR(bssid)); + } else { + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT + "status=%d ", status); + } + wpas_notify_p2p_invitation_result(wpa_s, status, bssid); + + if (wpa_s->pending_invite_ssid_id == -1) + return; /* Invitation to active group */ + + if (status != P2P_SC_SUCCESS) { + wpas_p2p_remove_pending_group_interface(wpa_s); + return; + } + + ssid = wpa_config_get_network(wpa_s->conf, + wpa_s->pending_invite_ssid_id); + if (ssid == NULL) { + wpa_printf(MSG_ERROR, "P2P: Could not find persistent group " + "data matching with invitation"); + return; + } + + /* + * The peer could have missed our ctrl::ack frame for Invitation + * Response and continue retransmitting the frame. To reduce the + * likelihood of the peer not getting successful TX status for the + * Invitation Response frame, wait a short time here before starting + * the persistent group so that we will remain on the current channel to + * acknowledge any possible retransmission from the peer. + */ + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before " + "starting persistent group"); + os_sleep(0, 50000); + + wpas_p2p_group_add_persistent(wpa_s, ssid, + ssid->mode == WPAS_MODE_P2P_GO, + wpa_s->p2p_persistent_go_freq, + wpa_s->p2p_go_ht40); +} + + +static int wpas_p2p_disallowed_freq(struct wpa_global *global, + unsigned int freq) +{ + unsigned int i; + + if (global->p2p_disallow_freq == NULL) + return 0; + + for (i = 0; i < global->num_p2p_disallow_freq; i++) { + if (freq >= global->p2p_disallow_freq[i].min && + freq <= global->p2p_disallow_freq[i].max) + return 1; + } + + return 0; +} + + +static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan) +{ + reg->channel[reg->channels] = chan; + reg->channels++; +} + + +static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s, + struct p2p_channels *chan) +{ + int i, cla = 0; + + wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz " + "band"); + + /* Operating class 81 - 2.4 GHz band channels 1..13 */ + chan->reg_class[cla].reg_class = 81; + chan->reg_class[cla].channels = 0; + for (i = 0; i < 11; i++) { + if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5)) + wpas_p2p_add_chan(&chan->reg_class[cla], i + 1); + } + if (chan->reg_class[cla].channels) + cla++; + + wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz " + "band"); + + /* Operating class 115 - 5 GHz, channels 36-48 */ + chan->reg_class[cla].reg_class = 115; + chan->reg_class[cla].channels = 0; + if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5)) + wpas_p2p_add_chan(&chan->reg_class[cla], 36); + if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5)) + wpas_p2p_add_chan(&chan->reg_class[cla], 40); + if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5)) + wpas_p2p_add_chan(&chan->reg_class[cla], 44); + if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5)) + wpas_p2p_add_chan(&chan->reg_class[cla], 48); + if (chan->reg_class[cla].channels) + cla++; + + wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz " + "band"); + + /* Operating class 124 - 5 GHz, channels 149,153,157,161 */ + chan->reg_class[cla].reg_class = 124; + chan->reg_class[cla].channels = 0; + if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5)) + wpas_p2p_add_chan(&chan->reg_class[cla], 149); + if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5)) + wpas_p2p_add_chan(&chan->reg_class[cla], 153); + if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5)) + wpas_p2p_add_chan(&chan->reg_class[cla], 157); + if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5)) + wpas_p2p_add_chan(&chan->reg_class[cla], 161); + if (chan->reg_class[cla].channels) + cla++; + + chan->reg_classes = cla; + return 0; +} + + +static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, + u16 num_modes, + enum hostapd_hw_mode mode) +{ + u16 i; + + for (i = 0; i < num_modes; i++) { + if (modes[i].mode == mode) + return &modes[i]; + } + + return NULL; +} + + +static int has_channel(struct wpa_global *global, + struct hostapd_hw_modes *mode, u8 chan, int *flags) +{ + int i; + unsigned int freq; + + freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) + + chan * 5; + if (wpas_p2p_disallowed_freq(global, freq)) + return 0; + + for (i = 0; i < mode->num_channels; i++) { + if (mode->channels[i].chan == chan) { + if (flags) + *flags = mode->channels[i].flag; + return !(mode->channels[i].flag & + (HOSTAPD_CHAN_DISABLED | + HOSTAPD_CHAN_PASSIVE_SCAN | + HOSTAPD_CHAN_NO_IBSS | + HOSTAPD_CHAN_RADAR)); + } + } + + return 0; +} + + +struct p2p_oper_class_map { + enum hostapd_hw_mode mode; + u8 op_class; + u8 min_chan; + u8 max_chan; + u8 inc; + enum { BW20, BW40PLUS, BW40MINUS } bw; +}; + +static struct p2p_oper_class_map op_class[] = { + { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 }, +#if 0 /* Do not enable HT40 on 2 GHz for now */ + { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS }, + { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS }, +#endif + { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 }, + { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 }, + { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS }, + { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS }, + { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS }, + { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS }, + { -1, 0, 0, 0, 0, BW20 } +}; + + +static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s, + struct hostapd_hw_modes *mode, + u8 channel, u8 bw) +{ + int flag; + + if (!has_channel(wpa_s->global, mode, channel, &flag)) + return -1; + if (bw == BW40MINUS && + (!(flag & HOSTAPD_CHAN_HT40MINUS) || + !has_channel(wpa_s->global, mode, channel - 4, NULL))) + return 0; + if (bw == BW40PLUS && + (!(flag & HOSTAPD_CHAN_HT40PLUS) || + !has_channel(wpa_s->global, mode, channel + 4, NULL))) + return 0; + return 1; +} + + +static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s, + struct p2p_channels *chan) +{ + struct hostapd_hw_modes *mode; + int cla, op; + + if (wpa_s->hw.modes == NULL) { + wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching " + "of all supported channels; assume dualband " + "support"); + return wpas_p2p_default_channels(wpa_s, chan); + } + + cla = 0; + + for (op = 0; op_class[op].op_class; op++) { + struct p2p_oper_class_map *o = &op_class[op]; + u8 ch; + struct p2p_reg_class *reg = NULL; + + mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode); + if (mode == NULL) + continue; + for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { + if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1) + continue; + if (reg == NULL) { + wpa_printf(MSG_DEBUG, "P2P: Add operating " + "class %u", o->op_class); + reg = &chan->reg_class[cla]; + cla++; + reg->reg_class = o->op_class; + } + reg->channel[reg->channels] = ch; + reg->channels++; + } + if (reg) { + wpa_hexdump(MSG_DEBUG, "P2P: Channels", + reg->channel, reg->channels); + } + } + + chan->reg_classes = cla; + + return 0; +} + + +int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s, + struct hostapd_hw_modes *mode, u8 channel) +{ + int op, ret; + + for (op = 0; op_class[op].op_class; op++) { + struct p2p_oper_class_map *o = &op_class[op]; + u8 ch; + + for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) { + if (o->mode != HOSTAPD_MODE_IEEE80211A || + o->bw == BW20 || ch != channel) + continue; + ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw); + if (ret < 0) + continue; + else if (ret > 0) + return (o->bw == BW40MINUS) ? -1 : 1; + else + return 0; + } + } + return 0; +} + + +static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf, + size_t buf_len) +{ + struct wpa_supplicant *wpa_s = ctx; + + for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { + if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0) + break; + } + if (wpa_s == NULL) + return -1; + + return wpa_drv_get_noa(wpa_s, buf, buf_len); +} + + +static int wpas_go_connected(void *ctx, const u8 *dev_addr) +{ + struct wpa_supplicant *wpa_s = ctx; + + for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) { + struct wpa_ssid *ssid = wpa_s->current_ssid; + if (ssid == NULL) + continue; + if (ssid->mode != WPAS_MODE_INFRA) + continue; + if (wpa_s->wpa_state != WPA_COMPLETED && + wpa_s->wpa_state != WPA_GROUP_HANDSHAKE) + continue; + if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0) + return 1; + } + + return 0; +} + + +/** + * wpas_p2p_init - Initialize P2P module for %wpa_supplicant + * @global: Pointer to global data from wpa_supplicant_init() + * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() + * Returns: 0 on success, -1 on failure + */ +int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s) +{ + struct p2p_config p2p; + unsigned int r; + int i; + + if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) + return 0; + + if (global->p2p) + return 0; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { + struct p2p_params params; + + wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management"); + os_memset(¶ms, 0, sizeof(params)); + params.dev_name = wpa_s->conf->device_name; + os_memcpy(params.pri_dev_type, wpa_s->conf->device_type, + WPS_DEV_TYPE_LEN); + params.num_sec_dev_types = wpa_s->conf->num_sec_device_types; + os_memcpy(params.sec_dev_type, + wpa_s->conf->sec_device_type, + params.num_sec_dev_types * WPS_DEV_TYPE_LEN); + + if (wpa_drv_p2p_set_params(wpa_s, ¶ms) < 0) + return -1; + + return 0; + } + + os_memset(&p2p, 0, sizeof(p2p)); + p2p.msg_ctx = wpa_s; + p2p.cb_ctx = wpa_s; + p2p.p2p_scan = wpas_p2p_scan; + p2p.send_action = wpas_send_action; + p2p.send_action_done = wpas_send_action_done; + p2p.go_neg_completed = wpas_go_neg_completed; + p2p.go_neg_req_rx = wpas_go_neg_req_rx; + p2p.dev_found = wpas_dev_found; + p2p.dev_lost = wpas_dev_lost; + p2p.start_listen = wpas_start_listen; + p2p.stop_listen = wpas_stop_listen; + p2p.send_probe_resp = wpas_send_probe_resp; + p2p.sd_request = wpas_sd_request; + p2p.sd_response = wpas_sd_response; + p2p.prov_disc_req = wpas_prov_disc_req; + p2p.prov_disc_resp = wpas_prov_disc_resp; + p2p.prov_disc_fail = wpas_prov_disc_fail; + p2p.invitation_process = wpas_invitation_process; + p2p.invitation_received = wpas_invitation_received; + p2p.invitation_result = wpas_invitation_result; + p2p.get_noa = wpas_get_noa; + p2p.go_connected = wpas_go_connected; + + os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN); + os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN); + p2p.dev_name = wpa_s->conf->device_name; + p2p.manufacturer = wpa_s->conf->manufacturer; + p2p.model_name = wpa_s->conf->model_name; + p2p.model_number = wpa_s->conf->model_number; + p2p.serial_number = wpa_s->conf->serial_number; + if (wpa_s->wps) { + os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16); + p2p.config_methods = wpa_s->wps->config_methods; + } + + if (wpa_s->conf->p2p_listen_reg_class && + wpa_s->conf->p2p_listen_channel) { + p2p.reg_class = wpa_s->conf->p2p_listen_reg_class; + p2p.channel = wpa_s->conf->p2p_listen_channel; + } else { + p2p.reg_class = 81; + /* + * Pick one of the social channels randomly as the listen + * channel. + */ + os_get_random((u8 *) &r, sizeof(r)); + p2p.channel = 1 + (r % 3) * 5; + } + wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel); + + if (wpa_s->conf->p2p_oper_reg_class && + wpa_s->conf->p2p_oper_channel) { + p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class; + p2p.op_channel = wpa_s->conf->p2p_oper_channel; + p2p.cfg_op_channel = 1; + wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: " + "%d:%d", p2p.op_reg_class, p2p.op_channel); + + } else { + p2p.op_reg_class = 81; + /* + * Use random operation channel from (1, 6, 11) if no other + * preference is indicated. + */ + os_get_random((u8 *) &r, sizeof(r)); + p2p.op_channel = 1 + (r % 3) * 5; + p2p.cfg_op_channel = 0; + wpa_printf(MSG_DEBUG, "P2P: Random operating channel: " + "%d:%d", p2p.op_reg_class, p2p.op_channel); + } + if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) { + os_memcpy(p2p.country, wpa_s->conf->country, 2); + p2p.country[2] = 0x04; + } else + os_memcpy(p2p.country, "XX\x04", 3); + + if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) { + wpa_printf(MSG_ERROR, "P2P: Failed to configure supported " + "channel list"); + return -1; + } + + os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type, + WPS_DEV_TYPE_LEN); + + p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types; + os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type, + p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN); + + p2p.concurrent_operations = !!(wpa_s->drv_flags & + WPA_DRIVER_FLAGS_P2P_CONCURRENT); + + p2p.max_peers = 100; + + if (wpa_s->conf->p2p_ssid_postfix) { + p2p.ssid_postfix_len = + os_strlen(wpa_s->conf->p2p_ssid_postfix); + if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix)) + p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix); + os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix, + p2p.ssid_postfix_len); + } + + p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss; + + p2p.max_listen = wpa_s->max_remain_on_chan; + + global->p2p = p2p_init(&p2p); + if (global->p2p == NULL) + return -1; + global->p2p_init_wpa_s = wpa_s; + + for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { + if (wpa_s->conf->wps_vendor_ext[i] == NULL) + continue; + p2p_add_wps_vendor_extension( + global->p2p, wpa_s->conf->wps_vendor_ext[i]); + } + + return 0; +} + + +/** + * wpas_p2p_deinit - Deinitialize per-interface P2P data + * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() + * + * This function deinitialize per-interface P2P data. + */ +void wpas_p2p_deinit(struct wpa_supplicant *wpa_s) +{ + if (wpa_s->driver && wpa_s->drv_priv) + wpa_drv_probe_req_report(wpa_s, 0); + + if (wpa_s->go_params) { + /* Clear any stored provisioning info */ + p2p_clear_provisioning_info( + wpa_s->global->p2p, + wpa_s->go_params->peer_device_addr); + } + + os_free(wpa_s->go_params); + wpa_s->go_params = NULL; + eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); + eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); + wpa_s->p2p_long_listen = 0; + eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); + eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); + wpas_p2p_remove_pending_group_interface(wpa_s); + + /* TODO: remove group interface from the driver if this wpa_s instance + * is on top of a P2P group interface */ +} + + +/** + * wpas_p2p_deinit_global - Deinitialize global P2P module + * @global: Pointer to global data from wpa_supplicant_init() + * + * This function deinitializes the global (per device) P2P module. + */ +void wpas_p2p_deinit_global(struct wpa_global *global) +{ + struct wpa_supplicant *wpa_s, *tmp; + + wpa_s = global->ifaces; + if (wpa_s) + wpas_p2p_service_flush(wpa_s); + + if (global->p2p == NULL) + return; + + /* Remove remaining P2P group interfaces */ + while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) + wpa_s = wpa_s->next; + while (wpa_s) { + tmp = global->ifaces; + while (tmp && + (tmp == wpa_s || + tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) { + tmp = tmp->next; + } + if (tmp == NULL) + break; + /* Disconnect from the P2P group and deinit the interface */ + wpas_p2p_disconnect(tmp); + } + + /* + * Deinit GO data on any possibly remaining interface (if main + * interface is used as GO). + */ + for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { + if (wpa_s->ap_iface) + wpas_p2p_group_deinit(wpa_s); + } + + p2p_deinit(global->p2p); + global->p2p = NULL; + global->p2p_init_wpa_s = NULL; +} + + +static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s) +{ + if (wpa_s->conf->p2p_no_group_iface) + return 0; /* separate interface disabled per configuration */ + if (wpa_s->drv_flags & + (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE | + WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P)) + return 1; /* P2P group requires a new interface in every case + */ + if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)) + return 0; /* driver does not support concurrent operations */ + if (wpa_s->global->ifaces->next) + return 1; /* more that one interface already in use */ + if (wpa_s->wpa_state >= WPA_AUTHENTICATING) + return 1; /* this interface is already in use */ + return 0; +} + + +static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s, + const u8 *peer_addr, + enum p2p_wps_method wps_method, + int go_intent, const u8 *own_interface_addr, + unsigned int force_freq, int persistent_group, + struct wpa_ssid *ssid, unsigned int pref_freq) +{ + if (persistent_group && wpa_s->conf->persistent_reconnect) + persistent_group = 2; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { + return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method, + go_intent, own_interface_addr, + force_freq, persistent_group); + } + + /* + * Increase GO config timeout if HT40 is used since it takes some time + * to scan channels for coex purposes before the BSS can be started. + */ + p2p_set_config_timeout(wpa_s->global->p2p, + wpa_s->p2p_go_ht40 ? 255 : 100, 20); + + return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method, + go_intent, own_interface_addr, force_freq, + persistent_group, ssid ? ssid->ssid : NULL, + ssid ? ssid->ssid_len : 0, + wpa_s->p2p_pd_before_go_neg, pref_freq); +} + + +static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s, + const u8 *peer_addr, + enum p2p_wps_method wps_method, + int go_intent, const u8 *own_interface_addr, + unsigned int force_freq, int persistent_group, + struct wpa_ssid *ssid, unsigned int pref_freq) +{ + if (persistent_group && wpa_s->conf->persistent_reconnect) + persistent_group = 2; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return -1; + + return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method, + go_intent, own_interface_addr, force_freq, + persistent_group, ssid ? ssid->ssid : NULL, + ssid ? ssid->ssid_len : 0, pref_freq); +} + + +static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s) +{ + wpa_s->p2p_join_scan_count++; + wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d", + wpa_s->p2p_join_scan_count); + if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) { + wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR + " for join operationg - stop join attempt", + MAC2STR(wpa_s->pending_join_iface_addr)); + eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); + if (wpa_s->p2p_auto_pd) { + wpa_s->p2p_auto_pd = 0; + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE + " p2p_dev_addr=" MACSTR " status=N/A", + MAC2STR(wpa_s->pending_join_dev_addr)); + return; + } + wpa_msg(wpa_s->parent, MSG_INFO, + P2P_EVENT_GROUP_FORMATION_FAILURE); + } +} + + +static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq) +{ + struct wpa_supplicant *iface; + int shared_freq; + u8 bssid[ETH_ALEN]; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT) + return 0; + + for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { + if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s) + continue; + if (iface->current_ssid == NULL || iface->assoc_freq == 0) + continue; + if (iface->current_ssid->mode == WPAS_MODE_AP || + iface->current_ssid->mode == WPAS_MODE_P2P_GO) + shared_freq = iface->current_ssid->frequency; + else if (wpa_drv_get_bssid(iface, bssid) == 0) + shared_freq = iface->assoc_freq; + else + shared_freq = 0; + + if (shared_freq && freq != shared_freq) { + wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s " + "connected on %d MHz - new connection on " + "%d MHz", iface->ifname, shared_freq, freq); + return 1; + } + } + + shared_freq = wpa_drv_shared_freq(wpa_s); + if (shared_freq > 0 && shared_freq != freq) { + wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared " + "virtual interface connected on %d MHz - new " + "connection on %d MHz", shared_freq, freq); + return 1; + } + + return 0; +} + + +static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s, + const u8 *peer_dev_addr) +{ + struct wpa_bss *bss; + int updated; + + bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr); + if (bss == NULL) + return -1; + if (bss->last_update_idx < wpa_s->bss_update_idx) { + wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the " + "last scan"); + return 0; + } + + updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update); + wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at " + "%ld.%06ld (%supdated in last scan)", + bss->last_update.sec, bss->last_update.usec, + updated ? "": "not "); + + return updated; +} + + +static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s, + struct wpa_scan_results *scan_res) +{ + struct wpa_bss *bss; + int freq; + u8 iface_addr[ETH_ALEN]; + + eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); + + if (wpa_s->global->p2p_disabled) + return; + + wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin", + scan_res ? (int) scan_res->num : -1, + wpa_s->p2p_auto_join ? "auto_" : ""); + + if (scan_res) + wpas_p2p_scan_res_handler(wpa_s, scan_res); + + if (wpa_s->p2p_auto_pd) { + int join = wpas_p2p_peer_go(wpa_s, + wpa_s->pending_join_dev_addr); + if (join == 0 && + wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) { + wpa_s->auto_pd_scan_retry++; + bss = wpa_bss_get_bssid(wpa_s, + wpa_s->pending_join_dev_addr); + if (bss) { + freq = bss->freq; + wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for " + "the peer " MACSTR " at %d MHz", + wpa_s->auto_pd_scan_retry, + MAC2STR(wpa_s-> + pending_join_dev_addr), + freq); + wpas_p2p_join_scan_req(wpa_s, freq); + return; + } + } + + if (join < 0) + join = 0; + + wpa_s->p2p_auto_pd = 0; + wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG; + wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d", + MAC2STR(wpa_s->pending_join_dev_addr), join); + if (p2p_prov_disc_req(wpa_s->global->p2p, + wpa_s->pending_join_dev_addr, + wpa_s->pending_pd_config_methods, join, + 0, wpa_s->user_initiated_pd) < 0) { + wpa_s->p2p_auto_pd = 0; + wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE + " p2p_dev_addr=" MACSTR " status=N/A", + MAC2STR(wpa_s->pending_join_dev_addr)); + } + return; + } + + if (wpa_s->p2p_auto_join) { + int join = wpas_p2p_peer_go(wpa_s, + wpa_s->pending_join_dev_addr); + if (join < 0) { + wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be " + "running a GO -> use GO Negotiation"); + wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, + wpa_s->p2p_pin, wpa_s->p2p_wps_method, + wpa_s->p2p_persistent_group, 0, 0, 0, + wpa_s->p2p_go_intent, + wpa_s->p2p_connect_freq, + wpa_s->p2p_persistent_id, + wpa_s->p2p_pd_before_go_neg, + wpa_s->p2p_go_ht40); + return; + } + + wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> " + "try to join the group", join ? "" : + " in older scan"); + if (!join) + wpa_s->p2p_fallback_to_go_neg = 1; + } + + freq = p2p_get_oper_freq(wpa_s->global->p2p, + wpa_s->pending_join_iface_addr); + if (freq < 0 && + p2p_get_interface_addr(wpa_s->global->p2p, + wpa_s->pending_join_dev_addr, + iface_addr) == 0 && + os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0) + { + wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface " + "address for join from " MACSTR " to " MACSTR + " based on newly discovered P2P peer entry", + MAC2STR(wpa_s->pending_join_iface_addr), + MAC2STR(iface_addr)); + os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, + ETH_ALEN); + + freq = p2p_get_oper_freq(wpa_s->global->p2p, + wpa_s->pending_join_iface_addr); + } + if (freq >= 0) { + wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " + "from P2P peer table: %d MHz", freq); + } + bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr); + if (bss) { + freq = bss->freq; + wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency " + "from BSS table: %d MHz", freq); + } + if (freq > 0) { + u16 method; + + if (wpas_check_freq_conflict(wpa_s, freq) > 0) { + wpa_msg(wpa_s->parent, MSG_INFO, + P2P_EVENT_GROUP_FORMATION_FAILURE + "reason=FREQ_CONFLICT"); + return; + } + + wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request " + "prior to joining an existing group (GO " MACSTR + " freq=%u MHz)", + MAC2STR(wpa_s->pending_join_dev_addr), freq); + wpa_s->pending_pd_before_join = 1; + + switch (wpa_s->pending_join_wps_method) { + case WPS_PIN_DISPLAY: + method = WPS_CONFIG_KEYPAD; + break; + case WPS_PIN_KEYPAD: + method = WPS_CONFIG_DISPLAY; + break; + case WPS_PBC: + method = WPS_CONFIG_PUSHBUTTON; + break; + default: + method = 0; + break; + } + + if ((p2p_get_provisioning_info(wpa_s->global->p2p, + wpa_s->pending_join_dev_addr) == + method)) { + /* + * We have already performed provision discovery for + * joining the group. Proceed directly to join + * operation without duplicated provision discovery. */ + wpa_printf(MSG_DEBUG, "P2P: Provision discovery " + "with " MACSTR " already done - proceed to " + "join", + MAC2STR(wpa_s->pending_join_dev_addr)); + wpa_s->pending_pd_before_join = 0; + goto start; + } + + if (p2p_prov_disc_req(wpa_s->global->p2p, + wpa_s->pending_join_dev_addr, method, 1, + freq, wpa_s->user_initiated_pd) < 0) { + wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision " + "Discovery Request before joining an " + "existing group"); + wpa_s->pending_pd_before_join = 0; + goto start; + } + return; + } + + wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later"); + eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); + eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); + wpas_p2p_check_join_scan_limit(wpa_s); + return; + +start: + /* Start join operation immediately */ + wpas_p2p_join_start(wpa_s); +} + + +static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq) +{ + int ret; + struct wpa_driver_scan_params params; + struct wpabuf *wps_ie, *ies; + size_t ielen; + int freqs[2] = { 0, 0 }; + + os_memset(¶ms, 0, sizeof(params)); + + /* P2P Wildcard SSID */ + params.num_ssids = 1; + params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID; + params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN; + + wpa_s->wps->dev.p2p = 1; + wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev, + wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0, + NULL); + if (wps_ie == NULL) { + wpas_p2p_scan_res_join(wpa_s, NULL); + return; + } + + ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p); + ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen); + if (ies == NULL) { + wpabuf_free(wps_ie); + wpas_p2p_scan_res_join(wpa_s, NULL); + return; + } + wpabuf_put_buf(ies, wps_ie); + wpabuf_free(wps_ie); + + p2p_scan_ie(wpa_s->global->p2p, ies, NULL); + + params.p2p_probe = 1; + params.extra_ies = wpabuf_head(ies); + params.extra_ies_len = wpabuf_len(ies); + if (freq > 0) { + freqs[0] = freq; + params.freqs = freqs; + } + + /* + * Run a scan to update BSS table and start Provision Discovery once + * the new scan results become available. + */ + ret = wpa_drv_scan(wpa_s, ¶ms); + if (!ret) + wpa_s->scan_res_handler = wpas_p2p_scan_res_join; + + wpabuf_free(ies); + + if (ret) { + wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - " + "try again later"); + eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); + eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL); + wpas_p2p_check_join_scan_limit(wpa_s); + } +} + + +static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx) +{ + struct wpa_supplicant *wpa_s = eloop_ctx; + wpas_p2p_join_scan_req(wpa_s, 0); +} + + +static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr, + const u8 *dev_addr, enum p2p_wps_method wps_method, + int auto_join) +{ + wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface " + MACSTR " dev " MACSTR ")%s", + MAC2STR(iface_addr), MAC2STR(dev_addr), + auto_join ? " (auto_join)" : ""); + + wpa_s->p2p_auto_pd = 0; + wpa_s->p2p_auto_join = !!auto_join; + os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN); + os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN); + wpa_s->pending_join_wps_method = wps_method; + + /* Make sure we are not running find during connection establishment */ + wpas_p2p_stop_find(wpa_s); + + wpa_s->p2p_join_scan_count = 0; + wpas_p2p_join_scan(wpa_s, NULL); + return 0; +} + + +static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s) +{ + struct wpa_supplicant *group; + struct p2p_go_neg_results res; + struct wpa_bss *bss; + + group = wpas_p2p_get_group_iface(wpa_s, 0, 0); + if (group == NULL) + return -1; + if (group != wpa_s) { + os_memcpy(group->p2p_pin, wpa_s->p2p_pin, + sizeof(group->p2p_pin)); + group->p2p_wps_method = wpa_s->p2p_wps_method; + } + + group->p2p_in_provisioning = 1; + wpa_s->global->p2p_group_formation = wpa_s; + group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg; + + os_memset(&res, 0, sizeof(res)); + os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr, + ETH_ALEN); + res.wps_method = wpa_s->pending_join_wps_method; + bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr); + if (bss) { + res.freq = bss->freq; + res.ssid_len = bss->ssid_len; + os_memcpy(res.ssid, bss->ssid, bss->ssid_len); + } + + if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) { + wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to " + "starting client"); + wpa_drv_cancel_remain_on_channel(wpa_s); + wpa_s->off_channel_freq = 0; + wpa_s->roc_waiting_drv_freq = 0; + } + wpas_start_wps_enrollee(group, &res); + + /* + * Allow a longer timeout for join-a-running-group than normal 15 + * second group formation timeout since the GO may not have authorized + * our connection yet. + */ + eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL); + eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout, + wpa_s, NULL); + + return 0; +} + + +/** + * wpas_p2p_connect - Request P2P Group Formation to be started + * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() + * @peer_addr: Address of the peer P2P Device + * @pin: PIN to use during provisioning or %NULL to indicate PBC mode + * @persistent_group: Whether to create a persistent group + * @auto_join: Whether to select join vs. GO Negotiation automatically + * @join: Whether to join an existing group (as a client) instead of starting + * Group Owner negotiation; @peer_addr is BSSID in that case + * @auth: Whether to only authorize the connection instead of doing that and + * initiating Group Owner negotiation + * @go_intent: GO Intent or -1 to use default + * @freq: Frequency for the group or 0 for auto-selection + * @persistent_id: Persistent group credentials to use for forcing GO + * parameters or -1 to generate new values (SSID/passphrase) + * @pd: Whether to send Provision Discovery prior to GO Negotiation as an + * interoperability workaround when initiating group formation + * @ht40: Start GO with 40 MHz channel width + * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified + * failure, -2 on failure due to channel not currently available, + * -3 if forced channel is not supported + */ +int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr, + const char *pin, enum p2p_wps_method wps_method, + int persistent_group, int auto_join, int join, int auth, + int go_intent, int freq, int persistent_id, int pd, + int ht40) +{ + int force_freq = 0, pref_freq = 0, oper_freq = 0; + u8 bssid[ETH_ALEN]; + int ret = 0; + enum wpa_driver_if_type iftype; + const u8 *if_addr; + struct wpa_ssid *ssid = NULL; + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + + if (persistent_id >= 0) { + ssid = wpa_config_get_network(wpa_s->conf, persistent_id); + if (ssid == NULL || ssid->disabled != 2 || + ssid->mode != WPAS_MODE_P2P_GO) + return -1; + } + + if (go_intent < 0) + go_intent = wpa_s->conf->p2p_go_intent; + + if (!auth) + wpa_s->p2p_long_listen = 0; + + wpa_s->p2p_wps_method = wps_method; + wpa_s->p2p_persistent_group = !!persistent_group; + wpa_s->p2p_persistent_id = persistent_id; + wpa_s->p2p_go_intent = go_intent; + wpa_s->p2p_connect_freq = freq; + wpa_s->p2p_fallback_to_go_neg = 0; + wpa_s->p2p_pd_before_go_neg = !!pd; + wpa_s->p2p_go_ht40 = !!ht40; + + if (pin) + os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin)); + else if (wps_method == WPS_PIN_DISPLAY) { + ret = wps_generate_pin(); + os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d", + ret); + wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s", + wpa_s->p2p_pin); + } else + wpa_s->p2p_pin[0] = '\0'; + + if (join || auto_join) { + u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN]; + if (auth) { + wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to " + "connect a running group from " MACSTR, + MAC2STR(peer_addr)); + os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN); + return ret; + } + os_memcpy(dev_addr, peer_addr, ETH_ALEN); + if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr, + iface_addr) < 0) { + os_memcpy(iface_addr, peer_addr, ETH_ALEN); + p2p_get_dev_addr(wpa_s->global->p2p, peer_addr, + dev_addr); + } + if (auto_join) { + os_get_time(&wpa_s->p2p_auto_started); + wpa_printf(MSG_DEBUG, "P2P: Auto join started at " + "%ld.%06ld", + wpa_s->p2p_auto_started.sec, + wpa_s->p2p_auto_started.usec); + } + wpa_s->user_initiated_pd = 1; + if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method, + auto_join) < 0) + return -1; + return ret; + } + + if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && + wpa_s->assoc_freq) + oper_freq = wpa_s->assoc_freq; + else { + oper_freq = wpa_drv_shared_freq(wpa_s); + if (oper_freq < 0) + oper_freq = 0; + } + + if (freq > 0) { + if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { + wpa_printf(MSG_DEBUG, "P2P: The forced channel " + "(%u MHz) is not supported for P2P uses", + freq); + return -3; + } + + if (oper_freq > 0 && freq != oper_freq && + !(wpa_s->drv_flags & + WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { + wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " + "on %u MHz while connected on another " + "channel (%u MHz)", freq, oper_freq); + return -2; + } + wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " + "requested channel (%u MHz)", freq); + force_freq = freq; + } else if (oper_freq > 0 && + !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) { + if (!(wpa_s->drv_flags & + WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { + wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group " + "while connected on non-P2P supported " + "channel (%u MHz)", oper_freq); + return -2; + } + wpa_printf(MSG_DEBUG, "P2P: Current operating channel " + "(%u MHz) not available for P2P - try to use " + "another channel", oper_freq); + force_freq = 0; + } else if (oper_freq > 0 && + (wpa_s->drv_flags & + WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { + wpa_printf(MSG_DEBUG, "P2P: Trying to prefer the channel we " + "are already using (%u MHz) on another interface", + oper_freq); + pref_freq = oper_freq; + } else if (oper_freq > 0) { + wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the " + "channel we are already using (%u MHz) on another " + "interface", oper_freq); + force_freq = oper_freq; + } + + wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s); + + if (wpa_s->create_p2p_iface) { + /* Prepare to add a new interface for the group */ + iftype = WPA_IF_P2P_GROUP; + if (go_intent == 15) + iftype = WPA_IF_P2P_GO; + if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) { + wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new " + "interface for the group"); + return -1; + } + + if_addr = wpa_s->pending_interface_addr; + } else + if_addr = wpa_s->own_addr; + + if (auth) { + if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method, + go_intent, if_addr, + force_freq, persistent_group, ssid, + pref_freq) < 0) + return -1; + return ret; + } + + if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, + go_intent, if_addr, force_freq, + persistent_group, ssid, pref_freq) < 0) { + if (wpa_s->create_p2p_iface) + wpas_p2p_remove_pending_group_interface(wpa_s); + return -1; + } + return ret; +} + + +/** + * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start + * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() + * @freq: Frequency of the channel in MHz + * @duration: Duration of the stay on the channel in milliseconds + * + * This callback is called when the driver indicates that it has started the + * requested remain-on-channel duration. + */ +void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s, + unsigned int freq, unsigned int duration) +{ + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return; + if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) { + p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq, + wpa_s->pending_listen_duration); + wpa_s->pending_listen_freq = 0; + } +} + + +static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, + unsigned int timeout) +{ + /* Limit maximum Listen state time based on driver limitation. */ + if (timeout > wpa_s->max_remain_on_chan) + timeout = wpa_s->max_remain_on_chan; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return wpa_drv_p2p_listen(wpa_s, timeout); + + return p2p_listen(wpa_s->global->p2p, timeout); +} + + +/** + * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout + * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() + * @freq: Frequency of the channel in MHz + * + * This callback is called when the driver indicates that a remain-on-channel + * operation has been completed, i.e., the duration on the requested channel + * has timed out. + */ +void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s, + unsigned int freq) +{ + wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback " + "(p2p_long_listen=%d ms pending_action_tx=%p)", + wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s)); + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return; + if (p2p_listen_end(wpa_s->global->p2p, freq) > 0) + return; /* P2P module started a new operation */ + if (offchannel_pending_action_tx(wpa_s)) + return; + if (wpa_s->p2p_long_listen > 0) + wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan; + if (wpa_s->p2p_long_listen > 0) { + wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state"); + wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen); + } +} + + +/** + * wpas_p2p_group_remove - Remove a P2P group + * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() + * @ifname: Network interface name of the group interface or "*" to remove all + * groups + * Returns: 0 on success, -1 on failure + * + * This function is used to remove a P2P group. This can be used to disconnect + * from a group in which the local end is a P2P Client or to end a P2P Group in + * case the local end is the Group Owner. If a virtual network interface was + * created for this group, that interface will be removed. Otherwise, only the + * configured P2P group network will be removed from the interface. + */ +int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname) +{ + struct wpa_global *global = wpa_s->global; + + if (os_strcmp(ifname, "*") == 0) { + struct wpa_supplicant *prev; + wpa_s = global->ifaces; + while (wpa_s) { + prev = wpa_s; + wpa_s = wpa_s->next; + wpas_p2p_disconnect(prev); + } + return 0; + } + + for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { + if (os_strcmp(wpa_s->ifname, ifname) == 0) + break; + } + + return wpas_p2p_disconnect(wpa_s); +} + + +static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s, + struct p2p_go_neg_results *params, + int freq, int ht40) +{ + u8 bssid[ETH_ALEN]; + int res; + + os_memset(params, 0, sizeof(*params)); + params->role_go = 1; + params->ht40 = ht40; + if (freq) { + wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced " + "frequency %d MHz", freq); + params->freq = freq; + } else if (wpa_s->conf->p2p_oper_reg_class == 81 && + wpa_s->conf->p2p_oper_channel >= 1 && + wpa_s->conf->p2p_oper_channel <= 11) { + params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel; + wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " + "frequency %d MHz", params->freq); + } else if (wpa_s->conf->p2p_oper_reg_class == 115 || + wpa_s->conf->p2p_oper_reg_class == 124) { + params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel; + wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured " + "frequency %d MHz", params->freq); + } else if (wpa_s->conf->p2p_oper_channel == 0 && + wpa_s->best_overall_freq > 0 && + p2p_supported_freq(wpa_s->global->p2p, + wpa_s->best_overall_freq)) { + params->freq = wpa_s->best_overall_freq; + wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall " + "channel %d MHz", params->freq); + } else if (wpa_s->conf->p2p_oper_channel == 0 && + wpa_s->best_24_freq > 0 && + p2p_supported_freq(wpa_s->global->p2p, + wpa_s->best_24_freq)) { + params->freq = wpa_s->best_24_freq; + wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz " + "channel %d MHz", params->freq); + } else if (wpa_s->conf->p2p_oper_channel == 0 && + wpa_s->best_5_freq > 0 && + p2p_supported_freq(wpa_s->global->p2p, + wpa_s->best_5_freq)) { + params->freq = wpa_s->best_5_freq; + wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz " + "channel %d MHz", params->freq); + } else { + int chan; + for (chan = 0; chan < 11; chan++) { + params->freq = 2412 + chan * 5; + if (!wpas_p2p_disallowed_freq(wpa_s->global, + params->freq)) + break; + } + if (chan == 11) { + wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel " + "allowed"); + return -1; + } + wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference " + "known)", params->freq); + } + + if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 && + wpa_s->assoc_freq && !freq) { + wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " + "already using"); + params->freq = wpa_s->assoc_freq; + } + + res = wpa_drv_shared_freq(wpa_s); + if (res > 0 && !freq) { + wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are " + "already using on a shared interface"); + params->freq = res; + } else if (res > 0 && freq != res && + !(wpa_s->drv_flags & + WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) { + wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz " + "while connected on another channel (%u MHz)", + freq, res); + return -1; + } + + return 0; +} + + +static struct wpa_supplicant * +wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated, + int go) +{ + struct wpa_supplicant *group_wpa_s; + + if (!wpas_p2p_create_iface(wpa_s)) { + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group " + "operations"); + return wpa_s; + } + + if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO : + WPA_IF_P2P_CLIENT) < 0) { + wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface"); + return NULL; + } + group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go); + if (group_wpa_s == NULL) { + wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group " + "interface"); + wpas_p2p_remove_pending_group_interface(wpa_s); + return NULL; + } + + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s", + group_wpa_s->ifname); + return group_wpa_s; +} + + +/** + * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner + * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface() + * @persistent_group: Whether to create a persistent group + * @freq: Frequency for the group or 0 to indicate no hardcoding + * Returns: 0 on success, -1 on failure + * + * This function creates a new P2P group with the local end as the Group Owner, + * i.e., without using Group Owner Negotiation. + */ +int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group, + int freq, int ht40) +{ + struct p2p_go_neg_results params; + unsigned int r; + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + + /* Make sure we are not running find during connection establishment */ + wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND"); + wpas_p2p_stop_find_oper(wpa_s); + + if (freq == 2) { + wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz " + "band"); + if (wpa_s->best_24_freq > 0 && + p2p_supported_freq(wpa_s->global->p2p, + wpa_s->best_24_freq)) { + freq = wpa_s->best_24_freq; + wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band " + "channel: %d MHz", freq); + } else { + os_get_random((u8 *) &r, sizeof(r)); + freq = 2412 + (r % 3) * 25; + wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band " + "channel: %d MHz", freq); + } + } + + if (freq == 5) { + wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz " + "band"); + if (wpa_s->best_5_freq > 0 && + p2p_supported_freq(wpa_s->global->p2p, + wpa_s->best_5_freq)) { + freq = wpa_s->best_5_freq; + wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band " + "channel: %d MHz", freq); + } else { + os_get_random((u8 *) &r, sizeof(r)); + freq = 5180 + (r % 4) * 20; + if (!p2p_supported_freq(wpa_s->global->p2p, freq)) { + wpa_printf(MSG_DEBUG, "P2P: Could not select " + "5 GHz channel for P2P group"); + return -1; + } + wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band " + "channel: %d MHz", freq); + } + } + + if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) { + wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO " + "(%u MHz) is not supported for P2P uses", + freq); + return -1; + } + + if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40)) + return -1; + if (params.freq && + !p2p_supported_freq(wpa_s->global->p2p, params.freq)) { + wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO " + "(%u MHz) is not supported for P2P uses", + params.freq); + return -1; + } + p2p_go_params(wpa_s->global->p2p, ¶ms); + params.persistent_group = persistent_group; + + wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1); + if (wpa_s == NULL) + return -1; + wpas_start_wps_go(wpa_s, ¶ms, 0); + + return 0; +} + + +static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s, + struct wpa_ssid *params, int addr_allocated) +{ + struct wpa_ssid *ssid; + + wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0); + if (wpa_s == NULL) + return -1; + + wpa_supplicant_ap_deinit(wpa_s); + + ssid = wpa_config_add_network(wpa_s->conf); + if (ssid == NULL) + return -1; + wpa_config_set_network_defaults(ssid); + ssid->temporary = 1; + ssid->proto = WPA_PROTO_RSN; + ssid->pairwise_cipher = WPA_CIPHER_CCMP; + ssid->group_cipher = WPA_CIPHER_CCMP; + ssid->key_mgmt = WPA_KEY_MGMT_PSK; + ssid->ssid = os_malloc(params->ssid_len); + if (ssid->ssid == NULL) { + wpa_config_remove_network(wpa_s->conf, ssid->id); + return -1; + } + os_memcpy(ssid->ssid, params->ssid, params->ssid_len); + ssid->ssid_len = params->ssid_len; + ssid->p2p_group = 1; + ssid->export_keys = 1; + if (params->psk_set) { + os_memcpy(ssid->psk, params->psk, 32); + ssid->psk_set = 1; + } + if (params->passphrase) + ssid->passphrase = os_strdup(params->passphrase); + + wpa_supplicant_select_network(wpa_s, ssid); + + wpa_s->show_group_started = 1; + + return 0; +} + + +int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s, + struct wpa_ssid *ssid, int addr_allocated, + int freq, int ht40) +{ + struct p2p_go_neg_results params; + int go = 0; + + if (ssid->disabled != 2 || ssid->ssid == NULL) + return -1; + + if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) && + go == (ssid->mode == WPAS_MODE_P2P_GO)) { + wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is " + "already running"); + return 0; + } + + /* Make sure we are not running find during connection establishment */ + wpas_p2p_stop_find_oper(wpa_s); + + wpa_s->p2p_fallback_to_go_neg = 0; + + if (ssid->mode == WPAS_MODE_INFRA) + return wpas_start_p2p_client(wpa_s, ssid, addr_allocated); + + if (ssid->mode != WPAS_MODE_P2P_GO) + return -1; + + if (wpas_p2p_init_go_params(wpa_s, ¶ms, freq, ht40)) + return -1; + + params.role_go = 1; + params.psk_set = ssid->psk_set; + if (params.psk_set) + os_memcpy(params.psk, ssid->psk, sizeof(params.psk)); + if (ssid->passphrase) { + if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) { + wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in " + "persistent group"); + return -1; + } + os_strlcpy(params.passphrase, ssid->passphrase, + sizeof(params.passphrase)); + } + os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len); + params.ssid_len = ssid->ssid_len; + params.persistent_group = 1; + + wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1); + if (wpa_s == NULL) + return -1; + + wpas_start_wps_go(wpa_s, ¶ms, 0); + + return 0; +} + + +static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies, + struct wpabuf *proberesp_ies) +{ + struct wpa_supplicant *wpa_s = ctx; + if (wpa_s->ap_iface) { + struct hostapd_data *hapd = wpa_s->ap_iface->bss[0]; + if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) { + wpabuf_free(beacon_ies); + wpabuf_free(proberesp_ies); + return; + } + if (beacon_ies) { + wpabuf_free(hapd->p2p_beacon_ie); + hapd->p2p_beacon_ie = beacon_ies; + } + wpabuf_free(hapd->p2p_probe_resp_ie); + hapd->p2p_probe_resp_ie = proberesp_ies; + } else { + wpabuf_free(beacon_ies); + wpabuf_free(proberesp_ies); + } + wpa_supplicant_ap_update_beacon(wpa_s); +} + + +static void wpas_p2p_idle_update(void *ctx, int idle) +{ + struct wpa_supplicant *wpa_s = ctx; + if (!wpa_s->ap_iface) + return; + wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not "); + if (idle) + wpas_p2p_set_group_idle_timeout(wpa_s); + else + eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL); +} + + +struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s, + struct wpa_ssid *ssid) +{ + struct p2p_group *group; + struct p2p_group_config *cfg; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return NULL; + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return NULL; + + cfg = os_zalloc(sizeof(*cfg)); + if (cfg == NULL) + return NULL; + + if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect) + cfg->persistent_group = 2; + else if (ssid->p2p_persistent_group) + cfg->persistent_group = 1; + os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN); + if (wpa_s->max_stations && + wpa_s->max_stations < wpa_s->conf->max_num_sta) + cfg->max_clients = wpa_s->max_stations; + else + cfg->max_clients = wpa_s->conf->max_num_sta; + os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len); + cfg->ssid_len = ssid->ssid_len; + cfg->cb_ctx = wpa_s; + cfg->ie_update = wpas_p2p_ie_update; + cfg->idle_update = wpas_p2p_idle_update; + + group = p2p_group_init(wpa_s->global->p2p, cfg); + if (group == NULL) + os_free(cfg); + if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) + p2p_group_notif_formation_done(group); + wpa_s->p2p_group = group; + return group; +} + + +void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr, + int registrar) +{ + struct wpa_ssid *ssid = wpa_s->current_ssid; + + if (!wpa_s->p2p_in_provisioning) { + wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P " + "provisioning not in progress"); + return; + } + + if (ssid && ssid->mode == WPAS_MODE_INFRA) { + u8 go_dev_addr[ETH_ALEN]; + os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN); + wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, + ssid->ssid_len); + /* Clear any stored provisioning info */ + p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr); + } + + eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent, + NULL); + if (ssid && ssid->mode == WPAS_MODE_INFRA) { + /* + * Use a separate timeout for initial data connection to + * complete to allow the group to be removed automatically if + * something goes wrong in this step before the P2P group idle + * timeout mechanism is taken into use. + */ + eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0, + wpas_p2p_group_formation_timeout, + wpa_s->parent, NULL); + } + if (wpa_s->global->p2p) + p2p_wps_success_cb(wpa_s->global->p2p, peer_addr); + else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + wpa_drv_wps_success_cb(wpa_s, peer_addr); + wpas_group_formation_completed(wpa_s, 1); +} + + +void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s, + struct wps_event_fail *fail) +{ + if (!wpa_s->p2p_in_provisioning) { + wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P " + "provisioning not in progress"); + return; + } + + if (wpa_s->go_params) { + p2p_clear_provisioning_info( + wpa_s->global->p2p, + wpa_s->go_params->peer_device_addr); + } + + wpas_notify_p2p_wps_failed(wpa_s, fail); +} + + +int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr, + const char *config_method, + enum wpas_p2p_prov_disc_use use) +{ + u16 config_methods; + + wpa_s->p2p_fallback_to_go_neg = 0; + wpa_s->pending_pd_use = NORMAL_PD; + if (os_strncmp(config_method, "display", 7) == 0) + config_methods = WPS_CONFIG_DISPLAY; + else if (os_strncmp(config_method, "keypad", 6) == 0) + config_methods = WPS_CONFIG_KEYPAD; + else if (os_strncmp(config_method, "pbc", 3) == 0 || + os_strncmp(config_method, "pushbutton", 10) == 0) + config_methods = WPS_CONFIG_PUSHBUTTON; + else { + wpa_printf(MSG_DEBUG, "P2P: Unknown config method"); + return -1; + } + + if (use == WPAS_P2P_PD_AUTO) { + os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN); + wpa_s->pending_pd_config_methods = config_methods; + wpa_s->p2p_auto_pd = 1; + wpa_s->p2p_auto_join = 0; + wpa_s->pending_pd_before_join = 0; + wpa_s->auto_pd_scan_retry = 0; + wpas_p2p_stop_find(wpa_s); + wpa_s->p2p_join_scan_count = 0; + os_get_time(&wpa_s->p2p_auto_started); + wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld", + wpa_s->p2p_auto_started.sec, + wpa_s->p2p_auto_started.usec); + wpas_p2p_join_scan(wpa_s, NULL); + return 0; + } + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { + return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr, + config_methods, + use == WPAS_P2P_PD_FOR_JOIN); + } + + if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) + return -1; + + return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, + config_methods, use == WPAS_P2P_PD_FOR_JOIN, + 0, 1); +} + + +int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, + char *end) +{ + return p2p_scan_result_text(ies, ies_len, buf, end); +} + + +static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s) +{ + if (!offchannel_pending_action_tx(wpa_s)) + return; + + wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new " + "operation request"); + offchannel_clear_pending_action_tx(wpa_s); +} + + +int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout, + enum p2p_discovery_type type, + unsigned int num_req_dev_types, const u8 *req_dev_types, + const u8 *dev_id, unsigned int search_delay) +{ + wpas_p2p_clear_pending_action_tx(wpa_s); + wpa_s->p2p_long_listen = 0; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return wpa_drv_p2p_find(wpa_s, timeout, type); + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL || + wpa_s->p2p_in_provisioning) + return -1; + + wpa_supplicant_cancel_sched_scan(wpa_s); + + return p2p_find(wpa_s->global->p2p, timeout, type, + num_req_dev_types, req_dev_types, dev_id, + search_delay); +} + + +static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s) +{ + wpas_p2p_clear_pending_action_tx(wpa_s); + wpa_s->p2p_long_listen = 0; + eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); + eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL); + wpa_s->global->p2p_cb_on_scan_complete = 0; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) { + wpa_drv_p2p_stop_find(wpa_s); + return 1; + } + + if (wpa_s->global->p2p) + p2p_stop_find(wpa_s->global->p2p); + + return 0; +} + + +void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s) +{ + if (wpas_p2p_stop_find_oper(wpa_s) > 0) + return; + wpas_p2p_remove_pending_group_interface(wpa_s); +} + + +static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx) +{ + struct wpa_supplicant *wpa_s = eloop_ctx; + wpa_s->p2p_long_listen = 0; +} + + +int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout) +{ + int res; + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + + wpa_supplicant_cancel_sched_scan(wpa_s); + wpas_p2p_clear_pending_action_tx(wpa_s); + + if (timeout == 0) { + /* + * This is a request for unlimited Listen state. However, at + * least for now, this is mapped to a Listen state for one + * hour. + */ + timeout = 3600; + } + eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL); + wpa_s->p2p_long_listen = 0; + + /* + * Stop previous find/listen operation to avoid trying to request a new + * remain-on-channel operation while the driver is still running the + * previous one. + */ + if (wpa_s->global->p2p) + p2p_stop_find(wpa_s->global->p2p); + + res = wpas_p2p_listen_start(wpa_s, timeout * 1000); + if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) { + wpa_s->p2p_long_listen = timeout * 1000; + eloop_register_timeout(timeout, 0, + wpas_p2p_long_listen_timeout, + wpa_s, NULL); + } + + return res; +} + + +int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, + u8 *buf, size_t len, int p2p_group) +{ + struct wpabuf *p2p_ie; + int ret; + + if (wpa_s->global->p2p_disabled) + return -1; + if (wpa_s->global->p2p == NULL) + return -1; + if (bss == NULL) + return -1; + + p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE); + ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len, + p2p_group, p2p_ie); + wpabuf_free(p2p_ie); + + return ret; +} + + +int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr, + const u8 *dst, const u8 *bssid, + const u8 *ie, size_t ie_len, int ssi_signal) +{ + if (wpa_s->global->p2p_disabled) + return 0; + if (wpa_s->global->p2p == NULL) + return 0; + + switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid, + ie, ie_len)) { + case P2P_PREQ_NOT_P2P: + wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len, + ssi_signal); + /* fall through */ + case P2P_PREQ_MALFORMED: + case P2P_PREQ_NOT_LISTEN: + case P2P_PREQ_NOT_PROCESSED: + default: /* make gcc happy */ + return 0; + case P2P_PREQ_PROCESSED: + return 1; + } +} + + +void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da, + const u8 *sa, const u8 *bssid, + u8 category, const u8 *data, size_t len, int freq) +{ + if (wpa_s->global->p2p_disabled) + return; + if (wpa_s->global->p2p == NULL) + return; + + p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len, + freq); +} + + +void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies) +{ + if (wpa_s->global->p2p_disabled) + return; + if (wpa_s->global->p2p == NULL) + return; + + p2p_scan_ie(wpa_s->global->p2p, ies, NULL); +} + + +void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s) +{ + p2p_group_deinit(wpa_s->p2p_group); + wpa_s->p2p_group = NULL; + + wpa_s->ap_configured_cb = NULL; + wpa_s->ap_configured_cb_ctx = NULL; + wpa_s->ap_configured_cb_data = NULL; + wpa_s->connect_without_scan = NULL; +} + + +int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr) +{ + wpa_s->p2p_long_listen = 0; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return wpa_drv_p2p_reject(wpa_s, addr); + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + + return p2p_reject(wpa_s->global->p2p, addr); +} + + +/* Invite to reinvoke a persistent group */ +int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr, + struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq, + int ht40) +{ + enum p2p_invite_role role; + u8 *bssid = NULL; + + wpa_s->p2p_persistent_go_freq = freq; + wpa_s->p2p_go_ht40 = !!ht40; + if (ssid->mode == WPAS_MODE_P2P_GO) { + role = P2P_INVITE_ROLE_GO; + if (peer_addr == NULL) { + wpa_printf(MSG_DEBUG, "P2P: Missing peer " + "address in invitation command"); + return -1; + } + if (wpas_p2p_create_iface(wpa_s)) { + if (wpas_p2p_add_group_interface(wpa_s, + WPA_IF_P2P_GO) < 0) { + wpa_printf(MSG_ERROR, "P2P: Failed to " + "allocate a new interface for the " + "group"); + return -1; + } + bssid = wpa_s->pending_interface_addr; + } else + bssid = wpa_s->own_addr; + } else { + role = P2P_INVITE_ROLE_CLIENT; + peer_addr = ssid->bssid; + } + wpa_s->pending_invite_ssid_id = ssid->id; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, + ssid->ssid, ssid->ssid_len, + go_dev_addr, 1); + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + + return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, + ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1); +} + + +/* Invite to join an active group */ +int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname, + const u8 *peer_addr, const u8 *go_dev_addr) +{ + struct wpa_global *global = wpa_s->global; + enum p2p_invite_role role; + u8 *bssid = NULL; + struct wpa_ssid *ssid; + int persistent; + + wpa_s->p2p_persistent_go_freq = 0; + wpa_s->p2p_go_ht40 = 0; + + for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { + if (os_strcmp(wpa_s->ifname, ifname) == 0) + break; + } + if (wpa_s == NULL) { + wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname); + return -1; + } + + ssid = wpa_s->current_ssid; + if (ssid == NULL) { + wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for " + "invitation"); + return -1; + } + + persistent = ssid->p2p_persistent_group && + wpas_p2p_get_persistent(wpa_s->parent, peer_addr, + ssid->ssid, ssid->ssid_len); + + if (ssid->mode == WPAS_MODE_P2P_GO) { + role = P2P_INVITE_ROLE_ACTIVE_GO; + bssid = wpa_s->own_addr; + if (go_dev_addr == NULL) + go_dev_addr = wpa_s->global->p2p_dev_addr; + } else { + role = P2P_INVITE_ROLE_CLIENT; + if (wpa_s->wpa_state < WPA_ASSOCIATED) { + wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot " + "invite to current group"); + return -1; + } + bssid = wpa_s->bssid; + if (go_dev_addr == NULL && + !is_zero_ether_addr(wpa_s->go_dev_addr)) + go_dev_addr = wpa_s->go_dev_addr; + } + wpa_s->parent->pending_invite_ssid_id = -1; + + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid, + ssid->ssid, ssid->ssid_len, + go_dev_addr, persistent); + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + + return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid, + ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq, + go_dev_addr, persistent); +} + + +void wpas_p2p_completed(struct wpa_supplicant *wpa_s) +{ + struct wpa_ssid *ssid = wpa_s->current_ssid; + const char *ssid_txt; + u8 go_dev_addr[ETH_ALEN]; + int network_id = -1; + int persistent; + int freq; + + if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) { + eloop_cancel_timeout(wpas_p2p_group_formation_timeout, + wpa_s->parent, NULL); + } + + if (!wpa_s->show_group_started || !ssid) + goto done; + + wpa_s->show_group_started = 0; + + ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len); + os_memset(go_dev_addr, 0, ETH_ALEN); + if (ssid->bssid_set) + os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN); + persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid, + ssid->ssid_len); + os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN); + + if (wpa_s->global->p2p_group_formation == wpa_s) + wpa_s->global->p2p_group_formation = NULL; + + freq = wpa_s->current_bss ? wpa_s->current_bss->freq : + (int) wpa_s->assoc_freq; + if (ssid->passphrase == NULL && ssid->psk_set) { + char psk[65]; + wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32); + wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED + "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr=" + MACSTR "%s", + wpa_s->ifname, ssid_txt, freq, psk, + MAC2STR(go_dev_addr), + persistent ? " [PERSISTENT]" : ""); + } else { + wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED + "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" " + "go_dev_addr=" MACSTR "%s", + wpa_s->ifname, ssid_txt, freq, + ssid->passphrase ? ssid->passphrase : "", + MAC2STR(go_dev_addr), + persistent ? " [PERSISTENT]" : ""); + } + + if (persistent) + network_id = wpas_p2p_store_persistent_group(wpa_s->parent, + ssid, go_dev_addr); + if (network_id < 0) + network_id = ssid->id; + wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1); + +done: + if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled && + wpa_s->global->p2p != NULL) { + wpa_s->global->p2p_cb_on_scan_complete = 0; + if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) { + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation " + "continued after successful connection"); + p2p_increase_search_delay( + wpa_s->global->p2p, + wpas_p2p_search_delay(wpa_s)); + } + } +} + + +int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1, + u32 interval1, u32 duration2, u32 interval2) +{ + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return -1; + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + + if (wpa_s->wpa_state < WPA_ASSOCIATED || + wpa_s->current_ssid == NULL || + wpa_s->current_ssid->mode != WPAS_MODE_INFRA) + return -1; + + return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid, + wpa_s->own_addr, wpa_s->assoc_freq, + duration1, interval1, duration2, interval2); +} + + +int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period, + unsigned int interval) +{ + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return -1; + + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + + return p2p_ext_listen(wpa_s->global->p2p, period, interval); +} + + +static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s) +{ + if (wpa_s->current_ssid == NULL) { + /* + * current_ssid can be cleared when P2P client interface gets + * disconnected, so assume this interface was used as P2P + * client. + */ + return 1; + } + return wpa_s->current_ssid->p2p_group && + wpa_s->current_ssid->mode == WPAS_MODE_INFRA; +} + + +static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx) +{ + struct wpa_supplicant *wpa_s = eloop_ctx; + + if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) { + wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - " + "disabled"); + return; + } + + wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate " + "group"); + wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT); +} + + +static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s) +{ + int timeout; + + if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) + wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); + + if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) + return; + + timeout = wpa_s->conf->p2p_group_idle; + if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA && + (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE)) + timeout = P2P_MAX_CLIENT_IDLE; + + if (timeout == 0) + return; + + if (timeout < 0) { + if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA) + timeout = 0; /* special client mode no-timeout */ + else + return; + } + + if (wpa_s->p2p_in_provisioning) { + /* + * Use the normal group formation timeout during the + * provisioning phase to avoid terminating this process too + * early due to group idle timeout. + */ + wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " + "during provisioning"); + return; + } + + if (wpa_s->show_group_started) { + /* + * Use the normal group formation timeout between the end of + * the provisioning phase and completion of 4-way handshake to + * avoid terminating this process too early due to group idle + * timeout. + */ + wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout " + "while waiting for initial 4-way handshake to " + "complete"); + return; + } + + wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds", + timeout); + eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout, + wpa_s, NULL); +} + + +/* Returns 1 if the interface was removed */ +int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, + u16 reason_code, const u8 *ie, size_t ie_len, + int locally_generated) +{ + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return 0; + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return 0; + + if (!locally_generated) + p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, + ie_len); + + if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated && + wpa_s->current_ssid && + wpa_s->current_ssid->p2p_group && + wpa_s->current_ssid->mode == WPAS_MODE_INFRA) { + wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group " + "session is ending"); + if (wpas_p2p_group_delete(wpa_s, + P2P_GROUP_REMOVAL_GO_ENDING_SESSION) + > 0) + return 1; + } + + return 0; +} + + +void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid, + u16 reason_code, const u8 *ie, size_t ie_len, + int locally_generated) +{ + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return; + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return; + + if (!locally_generated) + p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, + ie_len); +} + + +void wpas_p2p_update_config(struct wpa_supplicant *wpa_s) +{ + struct p2p_data *p2p = wpa_s->global->p2p; + + if (p2p == NULL) + return; + + if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)) + return; + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME) + p2p_set_dev_name(p2p, wpa_s->conf->device_name); + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) + p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type); + + if (wpa_s->wps && + (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS)) + p2p_set_config_methods(p2p, wpa_s->wps->config_methods); + + if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID)) + p2p_set_uuid(p2p, wpa_s->wps->uuid); + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) { + p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer); + p2p_set_model_name(p2p, wpa_s->conf->model_name); + p2p_set_model_number(p2p, wpa_s->conf->model_number); + p2p_set_serial_number(p2p, wpa_s->conf->serial_number); + } + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) + p2p_set_sec_dev_types(p2p, + (void *) wpa_s->conf->sec_device_type, + wpa_s->conf->num_sec_device_types); + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) { + int i; + p2p_remove_wps_vendor_extensions(p2p); + for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) { + if (wpa_s->conf->wps_vendor_ext[i] == NULL) + continue; + p2p_add_wps_vendor_extension( + p2p, wpa_s->conf->wps_vendor_ext[i]); + } + } + + if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) && + wpa_s->conf->country[0] && wpa_s->conf->country[1]) { + char country[3]; + country[0] = wpa_s->conf->country[0]; + country[1] = wpa_s->conf->country[1]; + country[2] = 0x04; + p2p_set_country(p2p, country); + } + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) { + p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix, + wpa_s->conf->p2p_ssid_postfix ? + os_strlen(wpa_s->conf->p2p_ssid_postfix) : + 0); + } + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS) + p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss); + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) { + u8 reg_class, channel; + int ret; + unsigned int r; + if (wpa_s->conf->p2p_listen_reg_class && + wpa_s->conf->p2p_listen_channel) { + reg_class = wpa_s->conf->p2p_listen_reg_class; + channel = wpa_s->conf->p2p_listen_channel; + } else { + reg_class = 81; + /* + * Pick one of the social channels randomly as the + * listen channel. + */ + os_get_random((u8 *) &r, sizeof(r)); + channel = 1 + (r % 3) * 5; + } + ret = p2p_set_listen_channel(p2p, reg_class, channel); + if (ret) + wpa_printf(MSG_ERROR, "P2P: Own listen channel update " + "failed: %d", ret); + } + if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) { + u8 op_reg_class, op_channel, cfg_op_channel; + int ret = 0; + unsigned int r; + if (wpa_s->conf->p2p_oper_reg_class && + wpa_s->conf->p2p_oper_channel) { + op_reg_class = wpa_s->conf->p2p_oper_reg_class; + op_channel = wpa_s->conf->p2p_oper_channel; + cfg_op_channel = 1; + } else { + op_reg_class = 81; + /* + * Use random operation channel from (1, 6, 11) + *if no other preference is indicated. + */ + os_get_random((u8 *) &r, sizeof(r)); + op_channel = 1 + (r % 3) * 5; + cfg_op_channel = 0; + } + ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel, + cfg_op_channel); + if (ret) + wpa_printf(MSG_ERROR, "P2P: Own oper channel update " + "failed: %d", ret); + } + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) { + if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan, + wpa_s->conf->p2p_pref_chan) < 0) { + wpa_printf(MSG_ERROR, "P2P: Preferred channel list " + "update failed"); + } + } +} + + +int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start, + int duration) +{ + if (!wpa_s->ap_iface) + return -1; + return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start, + duration); +} + + +int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled) +{ + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return -1; + if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) + return -1; + + wpa_s->global->cross_connection = enabled; + p2p_set_cross_connect(wpa_s->global->p2p, enabled); + + if (!enabled) { + struct wpa_supplicant *iface; + + for (iface = wpa_s->global->ifaces; iface; iface = iface->next) + { + if (iface->cross_connect_enabled == 0) + continue; + + iface->cross_connect_enabled = 0; + iface->cross_connect_in_use = 0; + wpa_msg(iface->parent, MSG_INFO, + P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", + iface->ifname, iface->cross_connect_uplink); + } + } + + return 0; +} + + +static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink) +{ + struct wpa_supplicant *iface; + + if (!uplink->global->cross_connection) + return; + + for (iface = uplink->global->ifaces; iface; iface = iface->next) { + if (!iface->cross_connect_enabled) + continue; + if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != + 0) + continue; + if (iface->ap_iface == NULL) + continue; + if (iface->cross_connect_in_use) + continue; + + iface->cross_connect_in_use = 1; + wpa_msg(iface->parent, MSG_INFO, + P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", + iface->ifname, iface->cross_connect_uplink); + } +} + + +static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink) +{ + struct wpa_supplicant *iface; + + for (iface = uplink->global->ifaces; iface; iface = iface->next) { + if (!iface->cross_connect_enabled) + continue; + if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) != + 0) + continue; + if (!iface->cross_connect_in_use) + continue; + + wpa_msg(iface->parent, MSG_INFO, + P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s", + iface->ifname, iface->cross_connect_uplink); + iface->cross_connect_in_use = 0; + } +} + + +void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s) +{ + if (wpa_s->ap_iface || wpa_s->current_ssid == NULL || + wpa_s->current_ssid->mode != WPAS_MODE_INFRA || + wpa_s->cross_connect_disallowed) + wpas_p2p_disable_cross_connect(wpa_s); + else + wpas_p2p_enable_cross_connect(wpa_s); + if (!wpa_s->ap_iface && + eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0) + wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout"); +} + + +void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s) +{ + wpas_p2p_disable_cross_connect(wpa_s); + if (!wpa_s->ap_iface && + !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout, + wpa_s, NULL)) + wpas_p2p_set_group_idle_timeout(wpa_s); +} + + +static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s) +{ + struct wpa_supplicant *iface; + + if (!wpa_s->global->cross_connection) + return; + + for (iface = wpa_s->global->ifaces; iface; iface = iface->next) { + if (iface == wpa_s) + continue; + if (iface->drv_flags & + WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE) + continue; + if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) + continue; + + wpa_s->cross_connect_enabled = 1; + os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname, + sizeof(wpa_s->cross_connect_uplink)); + wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from " + "%s to %s whenever uplink is available", + wpa_s->ifname, wpa_s->cross_connect_uplink); + + if (iface->ap_iface || iface->current_ssid == NULL || + iface->current_ssid->mode != WPAS_MODE_INFRA || + iface->cross_connect_disallowed || + iface->wpa_state != WPA_COMPLETED) + break; + + wpa_s->cross_connect_in_use = 1; + wpa_msg(wpa_s->parent, MSG_INFO, + P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s", + wpa_s->ifname, wpa_s->cross_connect_uplink); + break; + } +} + + +int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s) +{ + if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT && + !wpa_s->p2p_in_provisioning) + return 0; /* not P2P client operation */ + + wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC " + "session overlap"); + if (wpa_s != wpa_s->parent) + wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP); + + if (wpa_s->global->p2p) + p2p_group_formation_failed(wpa_s->global->p2p); + + eloop_cancel_timeout(wpas_p2p_group_formation_timeout, + wpa_s->parent, NULL); + + wpas_group_formation_completed(wpa_s, 0); + return 1; +} + + +void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s) +{ + struct p2p_channels chan; + + if (wpa_s->global == NULL || wpa_s->global->p2p == NULL) + return; + + os_memset(&chan, 0, sizeof(chan)); + if (wpas_p2p_setup_channels(wpa_s, &chan)) { + wpa_printf(MSG_ERROR, "P2P: Failed to update supported " + "channel list"); + return; + } + + p2p_update_channel_list(wpa_s->global->p2p, &chan); +} + + +static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s, + struct wpa_scan_results *scan_res) +{ + wpa_printf(MSG_DEBUG, "P2P: Ignore scan results"); +} + + +int wpas_p2p_cancel(struct wpa_supplicant *wpa_s) +{ + struct wpa_global *global = wpa_s->global; + int found = 0; + const u8 *peer; + + if (global->p2p == NULL) + return -1; + + wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation"); + + if (wpa_s->pending_interface_name[0] && + !is_zero_ether_addr(wpa_s->pending_interface_addr)) + found = 1; + + peer = p2p_get_go_neg_peer(global->p2p); + if (peer) { + wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer " + MACSTR, MAC2STR(peer)); + p2p_unauthorize(global->p2p, peer); + found = 1; + } + + if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) { + wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join"); + wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore; + found = 1; + } + + if (wpa_s->pending_pd_before_join) { + wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join"); + wpa_s->pending_pd_before_join = 0; + found = 1; + } + + wpas_p2p_stop_find(wpa_s); + + for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) { + if (wpa_s == global->p2p_group_formation && + (wpa_s->p2p_in_provisioning || + wpa_s->parent->pending_interface_type == + WPA_IF_P2P_CLIENT)) { + wpa_printf(MSG_DEBUG, "P2P: Interface %s in group " + "formation found - cancelling", + wpa_s->ifname); + found = 1; + eloop_cancel_timeout(wpas_p2p_group_formation_timeout, + wpa_s->parent, NULL); + if (wpa_s->p2p_in_provisioning) { + wpas_group_formation_completed(wpa_s, 0); + break; + } + wpas_p2p_group_delete(wpa_s, + P2P_GROUP_REMOVAL_REQUESTED); + break; + } + } + + if (!found) { + wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found"); + return -1; + } + + return 0; +} + + +void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s) +{ + if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group) + return; + + wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not " + "being available anymore"); + wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE); +} + + +void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s, + int freq_24, int freq_5, int freq_overall) +{ + struct p2p_data *p2p = wpa_s->global->p2p; + if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) + return; + p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall); +} + + +int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr) +{ + u8 peer[ETH_ALEN]; + struct p2p_data *p2p = wpa_s->global->p2p; + + if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) + return -1; + + if (hwaddr_aton(addr, peer)) + return -1; + + return p2p_unauthorize(p2p, peer); +} + + +/** + * wpas_p2p_disconnect - Disconnect from a P2P Group + * @wpa_s: Pointer to wpa_supplicant data + * Returns: 0 on success, -1 on failure + * + * This can be used to disconnect from a group in which the local end is a P2P + * Client or to end a P2P Group in case the local end is the Group Owner. If a + * virtual network interface was created for this group, that interface will be + * removed. Otherwise, only the configured P2P group network will be removed + * from the interface. + */ +int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s) +{ + + if (wpa_s == NULL) + return -1; + + return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ? + -1 : 0; +} + + +int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s) +{ + if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) + return 0; + + return p2p_in_progress(wpa_s->global->p2p); +} + + +void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s, + struct wpa_ssid *ssid) +{ + if (wpa_s->p2p_in_provisioning && ssid->p2p_group && + eloop_cancel_timeout(wpas_p2p_group_formation_timeout, + wpa_s->parent, NULL) > 0) { + /** + * Remove the network by scheduling the group formation + * timeout to happen immediately. The teardown code + * needs to be scheduled to run asynch later so that we + * don't delete data from under ourselves unexpectedly. + * Calling wpas_p2p_group_formation_timeout directly + * causes a series of crashes in WPS failure scenarios. + */ + wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to " + "P2P group network getting removed"); + eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout, + wpa_s->parent, NULL); + } +} + + +struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s, + const u8 *addr, const u8 *ssid, + size_t ssid_len) +{ + struct wpa_ssid *s; + size_t i; + + for (s = wpa_s->conf->ssid; s; s = s->next) { + if (s->disabled != 2) + continue; + if (ssid && + (ssid_len != s->ssid_len || + os_memcmp(ssid, s->ssid, ssid_len) != 0)) + continue; + if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0) + return s; /* peer is GO in the persistent group */ + if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL) + continue; + for (i = 0; i < s->num_p2p_clients; i++) { + if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, + addr, ETH_ALEN) == 0) + return s; /* peer is P2P client in persistent + * group */ + } + } + + return NULL; +} + + +void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s, + const u8 *addr) +{ + if (addr == NULL) + return; + wpas_p2p_add_persistent_group_client(wpa_s, addr); +} + + +static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s, + int group_added) +{ + struct wpa_supplicant *group = wpa_s; + if (wpa_s->global->p2p_group_formation) + group = wpa_s->global->p2p_group_formation; + wpa_s = wpa_s->parent; + offchannel_send_action_done(wpa_s); + if (group_added) + wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT); + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation"); + wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin, + wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0, + 0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq, + wpa_s->p2p_persistent_id, + wpa_s->p2p_pd_before_go_neg, + wpa_s->p2p_go_ht40); +} + + +int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s) +{ + if (!wpa_s->p2p_fallback_to_go_neg || + wpa_s->p2p_in_provisioning <= 5) + return 0; + + if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0) + return 0; /* peer operating as a GO */ + + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - " + "fallback to GO Negotiation"); + wpas_p2p_fallback_to_go_neg(wpa_s, 1); + + return 1; +} + + +unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s) +{ + const char *rn, *rn2; + struct wpa_supplicant *ifs; + + if (wpa_s->wpa_state > WPA_SCANNING) { + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to " + "concurrent operation", + P2P_CONCURRENT_SEARCH_DELAY); + return P2P_CONCURRENT_SEARCH_DELAY; + } + + if (!wpa_s->driver->get_radio_name) + return 0; + rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv); + if (rn == NULL || rn[0] == '\0') + return 0; + + for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) { + if (ifs == wpa_s || !ifs->driver->get_radio_name) + continue; + + rn2 = ifs->driver->get_radio_name(ifs->drv_priv); + if (!rn2 || os_strcmp(rn, rn2) != 0) + continue; + if (ifs->wpa_state > WPA_SCANNING) { + wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search " + "delay due to concurrent operation on " + "interface %s", + P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname); + return P2P_CONCURRENT_SEARCH_DELAY; + } + } + + return 0; +} |