static void p2ps_add_new_group_info(struct p2p_data *p2p, struct p2p_device *dev, struct wpabuf *buf) { int found; u8 intended_addr[ETH_ALEN]; u8 ssid[SSID_MAX_LEN]; size_t ssid_len; int group_iface; unsigned int force_freq; if (!p2p->cfg->get_go_info) return; found = p2p->cfg->get_go_info( p2p->cfg->cb_ctx, intended_addr, ssid, &ssid_len, &group_iface, &force_freq); if (found) { if (force_freq > 0) { p2p->p2ps_prov->force_freq = force_freq; p2p->p2ps_prov->pref_freq = 0; if (dev) p2p_prepare_channel(p2p, dev, force_freq, 0, 0); } p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, ssid, ssid_len); if (group_iface) p2p_buf_add_intended_addr(buf, p2p->intended_addr); else p2p_buf_add_intended_addr(buf, intended_addr); } else { if (!p2p->ssid_set) { p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); p2p->ssid_set = 1; } /* Add pre-composed P2P Group ID */ p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, p2p->ssid, p2p->ssid_len); if (group_iface) p2p_buf_add_intended_addr( buf, p2p->intended_addr); else p2p_buf_add_intended_addr( buf, p2p->cfg->dev_addr); } }
void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa, const u8 *data, size_t len, int rx_freq) { struct p2p_message msg; struct p2p_device *dev; int freq; enum p2p_status_code reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; struct wpabuf *resp; u32 adv_id = 0; struct p2ps_advertisement *p2ps_adv = NULL; u8 conncap = P2PS_SETUP_NEW; u8 auto_accept = 0; u32 session_id = 0; u8 session_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; u8 adv_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; const u8 *group_mac; int passwd_id = DEV_PW_DEFAULT; u16 config_methods; u16 allowed_config_methods = WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD; struct p2ps_feature_capab resp_fcap = { 0, 0 }; struct p2ps_feature_capab *req_fcap = NULL; u8 remote_conncap; u16 method; if (p2p_parse(data, len, &msg)) return; p2p_dbg(p2p, "Received Provision Discovery Request from " MACSTR " with config methods 0x%x (freq=%d)", MAC2STR(sa), msg.wps_config_methods, rx_freq); group_mac = msg.intended_addr; dev = p2p_get_device(p2p, sa); if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { p2p_dbg(p2p, "Provision Discovery Request from unknown peer " MACSTR, MAC2STR(sa)); if (p2p_add_device(p2p, sa, rx_freq, NULL, 0, data + 1, len - 1, 0)) { p2p_dbg(p2p, "Provision Discovery Request add device failed " MACSTR, MAC2STR(sa)); goto out; } if (!dev) { dev = p2p_get_device(p2p, sa); if (!dev) { p2p_dbg(p2p, "Provision Discovery device not found " MACSTR, MAC2STR(sa)); goto out; } } } else if (msg.wfd_subelems) { wpabuf_free(dev->info.wfd_subelems); dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); } if (!msg.adv_id) { allowed_config_methods |= WPS_CONFIG_PUSHBUTTON; if (!(msg.wps_config_methods & allowed_config_methods)) { p2p_dbg(p2p, "Unsupported Config Methods in Provision Discovery Request"); goto out; } /* Legacy (non-P2PS) - Unknown groups allowed for P2PS */ if (msg.group_id) { size_t i; for (i = 0; i < p2p->num_groups; i++) { if (p2p_group_is_group_id_match( p2p->groups[i], msg.group_id, msg.group_id_len)) break; } if (i == p2p->num_groups) { p2p_dbg(p2p, "PD request for unknown P2P Group ID - reject"); goto out; } } } else { allowed_config_methods |= WPS_CONFIG_P2PS; /* * Set adv_id here, so in case of an error, a P2PS PD Response * will be sent. */ adv_id = WPA_GET_LE32(msg.adv_id); if (p2ps_validate_pd_req(p2p, &msg, sa) < 0) { reject = P2P_SC_FAIL_INVALID_PARAMS; goto out; } req_fcap = (struct p2ps_feature_capab *) msg.feature_cap; os_memcpy(session_mac, msg.session_mac, ETH_ALEN); os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN); session_id = WPA_GET_LE32(msg.session_id); if (msg.conn_cap) conncap = *msg.conn_cap; /* * We need to verify a P2PS config methog in an initial PD * request or in a follow-on PD request with the status * SUCCESS_DEFERRED. */ if ((!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) && !(msg.wps_config_methods & allowed_config_methods)) { p2p_dbg(p2p, "Unsupported Config Methods in Provision Discovery Request"); goto out; } /* * TODO: since we don't support multiple PD, reject PD request * if we are in the middle of P2PS PD with some other peer */ } dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY | P2P_DEV_PD_PEER_KEYPAD | P2P_DEV_PD_PEER_P2PS); if (msg.wps_config_methods & WPS_CONFIG_DISPLAY) { p2p_dbg(p2p, "Peer " MACSTR " requested us to show a PIN on display", MAC2STR(sa)); dev->flags |= P2P_DEV_PD_PEER_KEYPAD; passwd_id = DEV_PW_USER_SPECIFIED; } else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { p2p_dbg(p2p, "Peer " MACSTR " requested us to write its PIN using keypad", MAC2STR(sa)); dev->flags |= P2P_DEV_PD_PEER_DISPLAY; passwd_id = DEV_PW_REGISTRAR_SPECIFIED; } else if (msg.wps_config_methods & WPS_CONFIG_P2PS) { p2p_dbg(p2p, "Peer " MACSTR " requesting P2PS PIN", MAC2STR(sa)); dev->flags |= P2P_DEV_PD_PEER_P2PS; passwd_id = DEV_PW_P2PS_DEFAULT; } /* Remove stale persistent groups */ if (p2p->cfg->remove_stale_groups) { p2p->cfg->remove_stale_groups( p2p->cfg->cb_ctx, dev->info.p2p_device_addr, msg.persistent_dev, msg.persistent_ssid, msg.persistent_ssid_len); } reject = P2P_SC_SUCCESS; /* * End of a legacy P2P PD Request processing, from this point continue * with P2PS one. */ if (!msg.adv_id) goto out; remote_conncap = conncap; if (!msg.status) { unsigned int forced_freq, pref_freq; if (os_memcmp(p2p->cfg->dev_addr, msg.adv_mac, ETH_ALEN)) { p2p_dbg(p2p, "P2PS PD adv mac does not match the local one"); reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; goto out; } p2ps_adv = p2p_service_p2ps_id(p2p, adv_id); if (!p2ps_adv) { p2p_dbg(p2p, "P2PS PD invalid adv_id=0x%X", adv_id); reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; goto out; } p2p_dbg(p2p, "adv_id: 0x%X, p2ps_adv: %p", adv_id, p2ps_adv); auto_accept = p2ps_adv->auto_accept; conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx, conncap, auto_accept, &forced_freq, &pref_freq); p2p_dbg(p2p, "Conncap: local:%d remote:%d result:%d", auto_accept, remote_conncap, conncap); p2p_prepare_channel(p2p, dev, forced_freq, pref_freq, 0); resp_fcap.cpt = p2ps_own_preferred_cpt(p2ps_adv->cpt_priority, req_fcap->cpt); p2p_dbg(p2p, "cpt: service:0x%x remote:0x%x result:0x%x", p2ps_adv->cpt_mask, req_fcap->cpt, resp_fcap.cpt); if (!resp_fcap.cpt) { p2p_dbg(p2p, "Incompatible P2PS feature capability CPT bitmask"); reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; } else if (p2ps_adv->config_methods && !(msg.wps_config_methods & p2ps_adv->config_methods)) { p2p_dbg(p2p, "Unsupported config methods in Provision Discovery Request (own=0x%x peer=0x%x)", p2ps_adv->config_methods, msg.wps_config_methods); reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; } else if (!p2ps_adv->state) { p2p_dbg(p2p, "P2PS state unavailable"); reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; } else if (!conncap) { p2p_dbg(p2p, "Conncap resolution failed"); reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; } if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { p2p_dbg(p2p, "Keypad - always defer"); auto_accept = 0; } if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) || msg.persistent_dev) && conncap != P2PS_SETUP_NEW && msg.channel_list && msg.channel_list_len && p2p_peer_channels_check(p2p, &p2p->channels, dev, msg.channel_list, msg.channel_list_len) < 0) { p2p_dbg(p2p, "No common channels - force deferred flow"); auto_accept = 0; } if (((remote_conncap & P2PS_SETUP_GROUP_OWNER) || msg.persistent_dev) && msg.operating_channel) { struct p2p_channels intersect; /* * There are cases where only the operating channel is * provided. This requires saving the channel as the * supported channel list, and verifying that it is * supported. */ if (dev->channels.reg_classes == 0 || !p2p_channels_includes(&dev->channels, msg.operating_channel[3], msg.operating_channel[4])) { struct p2p_channels *ch = &dev->channels; os_memset(ch, 0, sizeof(*ch)); ch->reg_class[0].reg_class = msg.operating_channel[3]; ch->reg_class[0].channel[0] = msg.operating_channel[4]; ch->reg_class[0].channels = 1; ch->reg_classes = 1; } p2p_channels_intersect(&p2p->channels, &dev->channels, &intersect); if (intersect.reg_classes == 0) { p2p_dbg(p2p, "No common channels - force deferred flow"); auto_accept = 0; } } if (auto_accept || reject != P2P_SC_SUCCESS) { struct p2ps_provision *tmp; if (p2ps_setup_p2ps_prov(p2p, adv_id, session_id, msg.wps_config_methods, session_mac, adv_mac) < 0) { reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; goto out; } tmp = p2p->p2ps_prov; tmp->force_freq = forced_freq; tmp->pref_freq = pref_freq; if (conncap) { tmp->conncap = conncap; tmp->status = P2P_SC_SUCCESS; } else { tmp->conncap = auto_accept; tmp->status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; } if (reject != P2P_SC_SUCCESS) goto out; } } if (!msg.status && !auto_accept && (!p2p->p2ps_prov || p2p->p2ps_prov->adv_id != adv_id)) { struct p2ps_provision *tmp; if (!conncap) { reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; goto out; } if (p2ps_setup_p2ps_prov(p2p, adv_id, session_id, msg.wps_config_methods, session_mac, adv_mac) < 0) { reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; goto out; } tmp = p2p->p2ps_prov; reject = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; tmp->status = reject; } /* Not a P2PS Follow-on PD */ if (!msg.status) goto out; if (*msg.status && *msg.status != P2P_SC_SUCCESS_DEFERRED) { reject = *msg.status; goto out; } if (*msg.status != P2P_SC_SUCCESS_DEFERRED || !p2p->p2ps_prov) goto out; if (p2p->p2ps_prov->adv_id != adv_id || os_memcmp(p2p->p2ps_prov->adv_mac, msg.adv_mac, ETH_ALEN)) { p2p_dbg(p2p, "P2PS Follow-on PD with mismatch Advertisement ID/MAC"); goto out; } if (p2p->p2ps_prov->session_id != session_id || os_memcmp(p2p->p2ps_prov->session_mac, msg.session_mac, ETH_ALEN)) { p2p_dbg(p2p, "P2PS Follow-on PD with mismatch Session ID/MAC"); goto out; } method = p2p->p2ps_prov->method; conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx, remote_conncap, p2p->p2ps_prov->conncap, &p2p->p2ps_prov->force_freq, &p2p->p2ps_prov->pref_freq); resp_fcap.cpt = p2ps_own_preferred_cpt(p2p->p2ps_prov->cpt_priority, req_fcap->cpt); p2p_dbg(p2p, "cpt: local:0x%x remote:0x%x result:0x%x", p2p->p2ps_prov->cpt_mask, req_fcap->cpt, resp_fcap.cpt); p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq, p2p->p2ps_prov->pref_freq, 0); /* * Ensure that if we asked for PIN originally, our method is consistent * with original request. */ if (method & WPS_CONFIG_DISPLAY) method = WPS_CONFIG_KEYPAD; else if (method & WPS_CONFIG_KEYPAD) method = WPS_CONFIG_DISPLAY; if (!conncap || !(msg.wps_config_methods & method)) { /* * Reject this "Deferred Accept* * if incompatible conncap or method */ reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; } else if (!resp_fcap.cpt) { p2p_dbg(p2p, "Incompatible P2PS feature capability CPT bitmask"); reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; } else if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) || msg.persistent_dev) && conncap != P2PS_SETUP_NEW && msg.channel_list && msg.channel_list_len && p2p_peer_channels_check(p2p, &p2p->channels, dev, msg.channel_list, msg.channel_list_len) < 0) { p2p_dbg(p2p, "No common channels in Follow-On Provision Discovery Request"); reject = P2P_SC_FAIL_NO_COMMON_CHANNELS; } else { reject = P2P_SC_SUCCESS; } dev->oper_freq = 0; if (reject == P2P_SC_SUCCESS || reject == P2P_SC_SUCCESS_DEFERRED) { u8 tmp; if (msg.operating_channel) dev->oper_freq = p2p_channel_to_freq(msg.operating_channel[3], msg.operating_channel[4]); if ((conncap & P2PS_SETUP_GROUP_OWNER) && p2p_go_select_channel(p2p, dev, &tmp) < 0) reject = P2P_SC_FAIL_NO_COMMON_CHANNELS; } p2p->p2ps_prov->status = reject; p2p->p2ps_prov->conncap = conncap; out: if (reject == P2P_SC_SUCCESS || reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) config_methods = msg.wps_config_methods; else config_methods = 0; /* * Send PD Response for an initial PD Request or for follow-on * PD Request with P2P_SC_SUCCESS_DEFERRED status. */ if (!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) { resp = p2p_build_prov_disc_resp(p2p, dev, msg.dialog_token, reject, config_methods, adv_id, msg.group_id, msg.group_id_len, msg.persistent_ssid, msg.persistent_ssid_len, (const u8 *) &resp_fcap, sizeof(resp_fcap)); if (!resp) { p2p_parse_free(&msg); return; } p2p_dbg(p2p, "Sending Provision Discovery Response"); if (rx_freq > 0) freq = rx_freq; else freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel); if (freq < 0) { p2p_dbg(p2p, "Unknown regulatory class/channel"); wpabuf_free(resp); p2p_parse_free(&msg); return; } p2p->pending_action_state = P2P_PENDING_PD_RESPONSE; if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, p2p->cfg->dev_addr, wpabuf_head(resp), wpabuf_len(resp), 200) < 0) p2p_dbg(p2p, "Failed to send Action frame"); else p2p->send_action_in_progress = 1; wpabuf_free(resp); } if (!dev) { p2p_parse_free(&msg); return; } freq = 0; if (reject == P2P_SC_SUCCESS && conncap == P2PS_SETUP_GROUP_OWNER) { freq = p2p_channel_to_freq(p2p->op_reg_class, p2p->op_channel); if (freq < 0) freq = 0; } if (!p2p->cfg->p2ps_prov_complete) { /* Don't emit anything */ } else if (msg.status && *msg.status != P2P_SC_SUCCESS && *msg.status != P2P_SC_SUCCESS_DEFERRED) { reject = *msg.status; p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject, sa, adv_mac, session_mac, NULL, adv_id, session_id, 0, 0, msg.persistent_ssid, msg.persistent_ssid_len, 0, 0, NULL, NULL, 0, freq); } else if (msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED && p2p->p2ps_prov) { p2p->p2ps_prov->status = reject; p2p->p2ps_prov->conncap = conncap; if (reject != P2P_SC_SUCCESS) p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject, sa, adv_mac, session_mac, NULL, adv_id, session_id, conncap, 0, msg.persistent_ssid, msg.persistent_ssid_len, 0, 0, NULL, NULL, 0, freq); else p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, *msg.status, sa, adv_mac, session_mac, group_mac, adv_id, session_id, conncap, passwd_id, msg.persistent_ssid, msg.persistent_ssid_len, 0, 0, NULL, (const u8 *) &resp_fcap, sizeof(resp_fcap), freq); } else if (msg.status && p2p->p2ps_prov) { p2p->p2ps_prov->status = P2P_SC_SUCCESS; p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, *msg.status, sa, adv_mac, session_mac, group_mac, adv_id, session_id, conncap, passwd_id, msg.persistent_ssid, msg.persistent_ssid_len, 0, 0, NULL, (const u8 *) &resp_fcap, sizeof(resp_fcap), freq); } else if (msg.status) { } else if (auto_accept && reject == P2P_SC_SUCCESS) { p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS, sa, adv_mac, session_mac, group_mac, adv_id, session_id, conncap, passwd_id, msg.persistent_ssid, msg.persistent_ssid_len, 0, 0, NULL, (const u8 *) &resp_fcap, sizeof(resp_fcap), freq); } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && (!msg.session_info || !msg.session_info_len)) { p2p->p2ps_prov->method = msg.wps_config_methods; p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS, sa, adv_mac, session_mac, group_mac, adv_id, session_id, conncap, passwd_id, msg.persistent_ssid, msg.persistent_ssid_len, 0, 1, NULL, (const u8 *) &resp_fcap, sizeof(resp_fcap), freq); } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { size_t buf_len = msg.session_info_len; char *buf = os_malloc(2 * buf_len + 1); if (buf) { p2p->p2ps_prov->method = msg.wps_config_methods; utf8_escape((char *) msg.session_info, buf_len, buf, 2 * buf_len + 1); p2p->cfg->p2ps_prov_complete( p2p->cfg->cb_ctx, P2P_SC_SUCCESS, sa, adv_mac, session_mac, group_mac, adv_id, session_id, conncap, passwd_id, msg.persistent_ssid, msg.persistent_ssid_len, 0, 1, buf, (const u8 *) &resp_fcap, sizeof(resp_fcap), freq); os_free(buf); } } /* * prov_disc_req callback is used to generate P2P-PROV-DISC-ENTER-PIN, * P2P-PROV-DISC-SHOW-PIN, and P2P-PROV-DISC-PBC-REQ events. * Call it either on legacy P2P PD or on P2PS PD only if we need to * enter/show PIN. * * The callback is called in the following cases: * 1. Legacy P2P PD request, response status SUCCESS * 2. P2PS advertiser, method: DISPLAY, autoaccept: TRUE, * response status: SUCCESS * 3. P2PS advertiser, method DISPLAY, autoaccept: FALSE, * response status: INFO_CURRENTLY_UNAVAILABLE * 4. P2PS advertiser, method: KEYPAD, autoaccept==any, * response status: INFO_CURRENTLY_UNAVAILABLE * 5. P2PS follow-on with SUCCESS_DEFERRED, * advertiser role: DISPLAY, autoaccept: FALSE, * seeker: KEYPAD, response status: SUCCESS */ if (p2p->cfg->prov_disc_req && ((reject == P2P_SC_SUCCESS && !msg.adv_id) || (!msg.status && (reject == P2P_SC_SUCCESS || reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) && passwd_id == DEV_PW_USER_SPECIFIED) || (!msg.status && reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && passwd_id == DEV_PW_REGISTRAR_SPECIFIED) || (reject == P2P_SC_SUCCESS && msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED && passwd_id == DEV_PW_REGISTRAR_SPECIFIED))) { const u8 *dev_addr = sa; if (msg.p2p_device_addr) dev_addr = msg.p2p_device_addr; p2p->cfg->prov_disc_req(p2p->cfg->cb_ctx, sa, msg.wps_config_methods, dev_addr, msg.pri_dev_type, msg.device_name, msg.config_methods, msg.capability ? msg.capability[0] : 0, msg.capability ? msg.capability[1] : 0, msg.group_id, msg.group_id_len); } if (reject == P2P_SC_SUCCESS) { switch (config_methods) { case WPS_CONFIG_DISPLAY: dev->wps_prov_info = WPS_CONFIG_KEYPAD; break; case WPS_CONFIG_KEYPAD: dev->wps_prov_info = WPS_CONFIG_DISPLAY; break; case WPS_CONFIG_PUSHBUTTON: dev->wps_prov_info = WPS_CONFIG_PUSHBUTTON; break; case WPS_CONFIG_P2PS: dev->wps_prov_info = WPS_CONFIG_P2PS; break; default: dev->wps_prov_info = 0; break; } if (msg.intended_addr) os_memcpy(dev->interface_addr, msg.intended_addr, ETH_ALEN); } p2p_parse_free(&msg); }
int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev, int join, int force_freq) { struct wpabuf *req; int freq; if (force_freq > 0) freq = force_freq; else freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq; if (freq <= 0) { p2p_dbg(p2p, "No Listen/Operating frequency known for the peer " MACSTR " to send Provision Discovery Request", MAC2STR(dev->info.p2p_device_addr)); return -1; } if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { if (!(dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { p2p_dbg(p2p, "Cannot use PD with P2P Device " MACSTR " that is in a group and is not discoverable", MAC2STR(dev->info.p2p_device_addr)); return -1; } /* TODO: use device discoverability request through GO */ } if (p2p->p2ps_prov) { if (p2p->p2ps_prov->status == P2P_SC_SUCCESS_DEFERRED) { if (p2p->p2ps_prov->method == WPS_CONFIG_DISPLAY) dev->req_config_methods = WPS_CONFIG_KEYPAD; else if (p2p->p2ps_prov->method == WPS_CONFIG_KEYPAD) dev->req_config_methods = WPS_CONFIG_DISPLAY; else dev->req_config_methods = WPS_CONFIG_P2PS; } else { /* Order of preference, based on peer's capabilities */ if (p2p->p2ps_prov->method) dev->req_config_methods = p2p->p2ps_prov->method; else if (dev->info.config_methods & WPS_CONFIG_P2PS) dev->req_config_methods = WPS_CONFIG_P2PS; else if (dev->info.config_methods & WPS_CONFIG_DISPLAY) dev->req_config_methods = WPS_CONFIG_DISPLAY; else dev->req_config_methods = WPS_CONFIG_KEYPAD; } p2p_dbg(p2p, "Building PD Request based on P2PS config method 0x%x status %d --> req_config_methods 0x%x", p2p->p2ps_prov->method, p2p->p2ps_prov->status, dev->req_config_methods); if (p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq, p2p->p2ps_prov->pref_freq, 1) < 0) return -1; } req = p2p_build_prov_disc_req(p2p, dev, join); if (req == NULL) return -1; if (p2p->state != P2P_IDLE) p2p_stop_listen_for_freq(p2p, freq); p2p->pending_action_state = P2P_PENDING_PD; if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, p2p->cfg->dev_addr, dev->info.p2p_device_addr, wpabuf_head(req), wpabuf_len(req), 200) < 0) { p2p_dbg(p2p, "Failed to send Action frame"); wpabuf_free(req); return -1; } os_memcpy(p2p->pending_pd_devaddr, dev->info.p2p_device_addr, ETH_ALEN); wpabuf_free(req); return 0; }
int p2p_invite(struct p2p_data *p2p, const u8 *peer, enum p2p_invite_role role, const u8 *bssid, const u8 *ssid, size_t ssid_len, unsigned int force_freq, const u8 *go_dev_addr, int persistent_group, unsigned int pref_freq, int dev_pw_id) { struct p2p_device *dev; p2p_dbg(p2p, "Request to invite peer " MACSTR " role=%d persistent=%d " "force_freq=%u", MAC2STR(peer), role, persistent_group, force_freq); if (bssid) p2p_dbg(p2p, "Invitation for BSSID " MACSTR, MAC2STR(bssid)); if (go_dev_addr) { p2p_dbg(p2p, "Invitation for GO Device Address " MACSTR, MAC2STR(go_dev_addr)); os_memcpy(p2p->invite_go_dev_addr_buf, go_dev_addr, ETH_ALEN); p2p->invite_go_dev_addr = p2p->invite_go_dev_addr_buf; } else p2p->invite_go_dev_addr = NULL; wpa_hexdump_ascii(MSG_DEBUG, "Invitation for SSID", ssid, ssid_len); if (dev_pw_id >= 0) { p2p_dbg(p2p, "Invitation to use Device Password ID %d", dev_pw_id); } p2p->invite_dev_pw_id = dev_pw_id; p2p->retry_invite_req = role == P2P_INVITE_ROLE_GO && persistent_group && !force_freq; p2p->retry_invite_req_sent = 0; dev = p2p_get_device(p2p, peer); if (dev == NULL || (dev->listen_freq <= 0 && dev->oper_freq <= 0 && dev->oob_go_neg_freq <= 0)) { p2p_dbg(p2p, "Cannot invite unknown P2P Device " MACSTR, MAC2STR(peer)); return -1; } if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, role != P2P_INVITE_ROLE_CLIENT) < 0) return -1; if (persistent_group && role == P2P_INVITE_ROLE_CLIENT && !force_freq && !pref_freq) dev->flags |= P2P_DEV_NO_PREF_CHAN; else dev->flags &= ~P2P_DEV_NO_PREF_CHAN; if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { if (!(dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { p2p_dbg(p2p, "Cannot invite a P2P Device " MACSTR " that is in a group and is not discoverable", MAC2STR(peer)); } /* TODO: use device discoverability request through GO */ } dev->invitation_reqs = 0; if (p2p->state != P2P_IDLE) p2p_stop_find(p2p); p2p->inv_role = role; p2p->inv_bssid_set = bssid != NULL; if (bssid) os_memcpy(p2p->inv_bssid, bssid, ETH_ALEN); os_memcpy(p2p->inv_ssid, ssid, ssid_len); p2p->inv_ssid_len = ssid_len; p2p->inv_persistent = persistent_group; return p2p_invite_send(p2p, dev, go_dev_addr, dev_pw_id); }