2  * Generic advertisement service (GAS) server
17 #include "gas.h"
33 	struct gas_server *gas;  member
64 	wpa_printf(MSG_DEBUG, "GAS: Response @%p timeout for " MACSTR  in gas_server_response_timeout()
83 	wpa_printf(MSG_DEBUG, "DPP: Free GAS response @%p", response);  in gas_server_free_response()
91 gas_server_send_resp(struct gas_server *gas,  in gas_server_send_resp()  argument
146 		wpa_printf(MSG_DEBUG, "GAS: No response available yet");  in gas_server_send_resp()
149 			   "GAS: Need to fragment query response");  in gas_server_send_resp()
152 			   "GAS: Full query response fits in the GAS Initial Response frame");  in gas_server_send_resp()
157 	gas->tx(gas->ctx, response->freq, response->dst, resp,  in gas_server_send_resp()
166 gas_server_rx_initial_req(struct gas_server *gas, const u8 *da, const u8 *sa,  in gas_server_rx_initial_req()  argument
177 	wpa_hexdump(MSG_MSGDUMP, "GAS: Received GAS Initial Request frame",  in gas_server_rx_initial_req()
184 			   "GAS: No Advertisement Protocol element found");  in gas_server_rx_initial_req()
191 			   "GAS: Truncated Advertisement Protocol element");  in gas_server_rx_initial_req()
197 	wpa_hexdump(MSG_MSGDUMP, "GAS: Advertisement Protocol element",  in gas_server_rx_initial_req()
201 		wpa_printf(MSG_DEBUG, "GAS: No Query Request Length field");  in gas_server_rx_initial_req()
207 		wpa_printf(MSG_DEBUG, "GAS: Truncated Query Request field");  in gas_server_rx_initial_req()
212 	wpa_hexdump(MSG_MSGDUMP, "GAS: Query Request",  in gas_server_rx_initial_req()
217 			    "GAS: Ignored extra data after Query Request field",  in gas_server_rx_initial_req()
225 	wpa_printf(MSG_DEBUG, "DPP: Allocated GAS response @%p", response);  in gas_server_rx_initial_req()
226 	dl_list_for_each(handler, &gas->handlers, struct gas_server_handler,  in gas_server_rx_initial_req()
239 		dl_list_add(&gas->responses, &response->list);  in gas_server_rx_initial_req()
242 			   "GAS: Calling handler for the requested Advertisement Protocol ID");  in gas_server_rx_initial_req()
245 		wpa_hexdump_buf(MSG_MSGDUMP, "GAS: Response from the handler",  in gas_server_rx_initial_req()
249 				   "GAS: Handler requested short delay before sending out the initial response");  in gas_server_rx_initial_req()
254 				   "GAS: Handler requested comeback delay: %u TU",  in gas_server_rx_initial_req()
256 		gas_server_send_resp(gas, response, resp, comeback_delay);  in gas_server_rx_initial_req()
261 		   "GAS: No registered handler for the requested Advertisement Protocol ID");  in gas_server_rx_initial_req()
271 	struct gas_server *gas = handler->gas;  in gas_server_handle_rx_comeback_req()  local
308 		   "GAS: Sending out %u/%u remaining Query Response octets",  in gas_server_handle_rx_comeback_req()
341 	gas->tx(gas->ctx, response->freq, response->dst, resp, wait_time);  in gas_server_handle_rx_comeback_req()
347 gas_server_rx_comeback_req(struct gas_server *gas, const u8 *da, const u8 *sa,  in gas_server_rx_comeback_req()  argument
352 	dl_list_for_each(response, &gas->responses, struct gas_server_response,  in gas_server_rx_comeback_req()
361 	wpa_printf(MSG_DEBUG, "GAS: No pending GAS response for " MACSTR  in gas_server_rx_comeback_req()
369  * @gas: GAS query data from gas_server_init()
377  * Returns: 0 if the Public Action frame was a GAS request frame or -1 if not
379 int gas_server_rx(struct gas_server *gas, const u8 *da, const u8 *sa,  in gas_server_rx()  argument
386 	if (!gas || len < 2)  in gas_server_rx()
399 		return -1; /* Not a GAS request */  in gas_server_rx()
401 	wpa_printf(MSG_DEBUG, "GAS: Received GAS %s Request frame DA=" MACSTR  in gas_server_rx()
409 		return gas_server_rx_initial_req(gas, da, sa, bssid,  in gas_server_rx()
412 	return gas_server_rx_comeback_req(gas, da, sa, bssid,  in gas_server_rx()
423 			   "GAS: More fragments remaining - keep pending entry");  in gas_server_handle_tx_status()
429 			   "GAS: Waiting for response - keep pending entry");  in gas_server_handle_tx_status()
435 			   "GAS: No ACK received - drop pending entry");  in gas_server_handle_tx_status()
438 			   "GAS: Last fragment of the response sent out - drop pending entry");  in gas_server_handle_tx_status()
448 void gas_server_tx_status(struct gas_server *gas, const u8 *dst, const u8 *data,  in gas_server_tx_status()  argument
465 	wpa_printf(MSG_DEBUG, "GAS: TX status dst=" MACSTR  in gas_server_tx_status()
470 	dl_list_for_each(response, &gas->responses, struct gas_server_response,  in gas_server_tx_status()
479 	wpa_printf(MSG_DEBUG, "GAS: No pending response matches TX status");  in gas_server_tx_status()
483 int gas_server_set_resp(struct gas_server *gas, void *resp_ctx,  in gas_server_set_resp()  argument
488 	dl_list_for_each(tmp, &gas->responses, struct gas_server_response,  in gas_server_set_resp()
500 		wpa_printf(MSG_DEBUG, "GAS: Send the delayed initial response");  in gas_server_set_resp()
501 		gas_server_send_resp(gas, response, resp, 0);  in gas_server_set_resp()
510 int gas_server_set_comeback_delay(struct gas_server *gas, void *resp_ctx,  in gas_server_set_comeback_delay()  argument
515 	dl_list_for_each(tmp, &gas->responses, struct gas_server_response,  in gas_server_set_comeback_delay()
527 		   "GAS: Send the delayed initial response with comeback delay %u",  in gas_server_set_comeback_delay()
529 	gas_server_send_resp(gas, response, NULL, comeback_delay);  in gas_server_set_comeback_delay()
535 bool gas_server_response_sent(struct gas_server *gas, void *resp_ctx)  in gas_server_response_sent()  argument
539 	dl_list_for_each(tmp, &gas->responses, struct gas_server_response,  in gas_server_response_sent()
556 	struct gas_server *gas;  in gas_server_init()  local
558 	gas = os_zalloc(sizeof(*gas));  in gas_server_init()
559 	if (!gas)  in gas_server_init()
561 	gas->ctx = ctx;  in gas_server_init()
562 	gas->tx = tx;  in gas_server_init()
563 	dl_list_init(&gas->handlers);  in gas_server_init()
564 	dl_list_init(&gas->responses);  in gas_server_init()
565 	return gas;  in gas_server_init()
569 void gas_server_deinit(struct gas_server *gas)  in gas_server_deinit()  argument
574 	if (!gas)  in gas_server_deinit()
577 	dl_list_for_each_safe(handler, tmp, &gas->handlers,  in gas_server_deinit()
583 	dl_list_for_each_safe(response, tmp_r, &gas->responses,  in gas_server_deinit()
589 	os_free(gas);  in gas_server_deinit()
593 int gas_server_register(struct gas_server *gas,  in gas_server_register()  argument
605 	if (!gas || adv_proto_id_len > MAX_ADV_PROTO_ID_LEN)  in gas_server_register()
616 	handler->gas = gas;  in gas_server_register()
617 	dl_list_add(&gas->handlers, &handler->list);  in gas_server_register()