/****************************************************************************** * * Copyright (C) 2008-2012 Broadcom Corporation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ******************************************************************************/ /****************************************************************************** * * this file contains the GATT server functions * ******************************************************************************/ #include "common/bt_target.h" #include "osi/allocator.h" #if BLE_INCLUDED == TRUE && GATTS_INCLUDED == TRUE #include #include "gatt_int.h" #include "stack/l2c_api.h" #include "l2c_int.h" #define GATT_MTU_REQ_MIN_LEN 2 /******************************************************************************* ** ** Function gatt_send_packet ** ** Description This function is called to send gatt packets directly ** ** Returns status ** *******************************************************************************/ tGATT_STATUS gatt_send_packet (tGATT_TCB *p_tcb, UINT8 *p_data, UINT16 len) { BT_HDR *p_msg = NULL; UINT8 *p_m = NULL; UINT16 buf_len; tGATT_STATUS status; if (len > p_tcb->payload_size){ return GATT_ILLEGAL_PARAMETER; } buf_len = (UINT16)(sizeof(BT_HDR) + p_tcb->payload_size + L2CAP_MIN_OFFSET); if ((p_msg = (BT_HDR *)osi_malloc(buf_len)) == NULL) { return GATT_NO_RESOURCES; } memset(p_msg, 0, buf_len); p_msg->len = len; p_m = (UINT8 *)(p_msg + 1) + L2CAP_MIN_OFFSET; memcpy(p_m, p_data, len); status = attp_send_sr_msg(p_tcb, p_msg); return status; } /******************************************************************************* ** ** Function gatt_sr_enqueue_cmd ** ** Description This function enqueue the request from client which needs a ** application response, and update the transaction ID. ** ** Returns void ** *******************************************************************************/ UINT32 gatt_sr_enqueue_cmd (tGATT_TCB *p_tcb, UINT8 op_code, UINT16 handle) { tGATT_SR_CMD *p_cmd = &p_tcb->sr_cmd; UINT32 trans_id = 0; if ( (p_cmd->op_code == 0) || (op_code == GATT_HANDLE_VALUE_CONF)) { /* no pending request */ if (op_code == GATT_CMD_WRITE || op_code == GATT_SIGN_CMD_WRITE || op_code == GATT_REQ_MTU || op_code == GATT_HANDLE_VALUE_CONF) { trans_id = ++p_tcb->trans_id; } else { p_cmd->trans_id = ++p_tcb->trans_id; p_cmd->op_code = op_code; p_cmd->handle = handle; p_cmd->status = GATT_NOT_FOUND; p_tcb->trans_id %= GATT_TRANS_ID_MAX; trans_id = p_cmd->trans_id; } } return trans_id; } /******************************************************************************* ** ** Function gatt_sr_cmd_empty ** ** Description This function check the server command queue is empty or not. ** ** Returns TRUE if empty, FALSE if there is pending command. ** *******************************************************************************/ BOOLEAN gatt_sr_cmd_empty (tGATT_TCB *p_tcb) { return (p_tcb->sr_cmd.op_code == 0); } /******************************************************************************* ** ** Function gatt_dequeue_sr_cmd ** ** Description This function dequeue the request from command queue. ** ** Returns void ** *******************************************************************************/ void gatt_dequeue_sr_cmd (tGATT_TCB *p_tcb) { /* Double check in case any buffers are queued */ GATT_TRACE_DEBUG("gatt_dequeue_sr_cmd" ); if (p_tcb->sr_cmd.p_rsp_msg) { GATT_TRACE_ERROR("%s free msg %p", __func__, p_tcb->sr_cmd.p_rsp_msg); osi_free(p_tcb->sr_cmd.p_rsp_msg); p_tcb->sr_cmd.p_rsp_msg = NULL; } if (p_tcb->sr_cmd.multi_rsp_q) { while (!fixed_queue_is_empty(p_tcb->sr_cmd.multi_rsp_q)) { osi_free(fixed_queue_dequeue(p_tcb->sr_cmd.multi_rsp_q, 0)); } fixed_queue_free(p_tcb->sr_cmd.multi_rsp_q, NULL); } memset( &p_tcb->sr_cmd, 0, sizeof(tGATT_SR_CMD)); } /******************************************************************************* ** ** Function process_read_multi_rsp ** ** Description This function check the read multiple response. ** ** Returns BOOLEAN if all replies have been received ** *******************************************************************************/ static BOOLEAN process_read_multi_rsp (tGATT_SR_CMD *p_cmd, tGATT_STATUS status, tGATTS_RSP *p_msg, UINT16 mtu) { UINT16 ii, total_len, len; UINT8 *p; BOOLEAN is_overflow = FALSE; GATT_TRACE_DEBUG ("process_read_multi_rsp status=%d mtu=%d", status, mtu); if (p_cmd->multi_rsp_q == NULL) { p_cmd->multi_rsp_q = fixed_queue_new(QUEUE_SIZE_MAX); } /* Enqueue the response */ BT_HDR *p_buf = (BT_HDR *)osi_malloc(sizeof(tGATTS_RSP)); if (p_buf == NULL) { p_cmd->status = GATT_INSUF_RESOURCE; return FALSE; } memcpy((void *)p_buf, (const void *)p_msg, sizeof(tGATTS_RSP)); fixed_queue_enqueue(p_cmd->multi_rsp_q, p_buf, FIXED_QUEUE_MAX_TIMEOUT); p_cmd->status = status; if (status == GATT_SUCCESS) { GATT_TRACE_DEBUG ("Multi read count=%d num_hdls=%d", fixed_queue_length(p_cmd->multi_rsp_q), p_cmd->multi_req.num_handles); /* Wait till we get all the responses */ if (fixed_queue_length(p_cmd->multi_rsp_q) == p_cmd->multi_req.num_handles) { len = sizeof(BT_HDR) + L2CAP_MIN_OFFSET + mtu; if ((p_buf = (BT_HDR *)osi_calloc(len)) == NULL) { p_cmd->status = GATT_INSUF_RESOURCE; return (TRUE); } p_buf->offset = L2CAP_MIN_OFFSET; p = (UINT8 *)(p_buf + 1) + p_buf->offset; /* First byte in the response is the opcode */ *p++ = GATT_RSP_READ_MULTI; p_buf->len = 1; /* Now walk through the buffers puting the data into the response in order */ list_t *list = NULL; const list_node_t *node = NULL; if (! fixed_queue_is_empty(p_cmd->multi_rsp_q)) { list = fixed_queue_get_list(p_cmd->multi_rsp_q); } for (ii = 0; ii < p_cmd->multi_req.num_handles; ii++) { tGATTS_RSP *p_rsp = NULL; if (list != NULL) { if (ii == 0) { node = list_begin(list); } else { node = list_next(node); } if (node != list_end(list)) { p_rsp = (tGATTS_RSP *)list_node(node); } } if (p_rsp != NULL) { total_len = (p_buf->len + p_rsp->attr_value.len); if (total_len > mtu) { /* just send the partial response for the overflow case */ len = p_rsp->attr_value.len - (total_len - mtu); is_overflow = TRUE; GATT_TRACE_DEBUG ("multi read overflow available len=%d val_len=%d", len, p_rsp->attr_value.len ); } else { len = p_rsp->attr_value.len; } if (p_rsp->attr_value.handle == p_cmd->multi_req.handles[ii]) { memcpy (p, p_rsp->attr_value.value, len); if (!is_overflow) { p += len; } p_buf->len += len; } else { p_cmd->status = GATT_NOT_FOUND; break; } if (is_overflow) { break; } } else { p_cmd->status = GATT_NOT_FOUND; break; } } /* loop through all handles*/ /* Sanity check on the buffer length */ if (p_buf->len == 0) { GATT_TRACE_ERROR("process_read_multi_rsp - nothing found!!"); p_cmd->status = GATT_NOT_FOUND; osi_free (p_buf); GATT_TRACE_DEBUG(" osi_free (p_buf)"); } else if (p_cmd->p_rsp_msg != NULL) { osi_free (p_buf); } else { p_cmd->p_rsp_msg = p_buf; } return (TRUE); } } else { /* any handle read exception occurs, return error */ return (TRUE); } /* If here, still waiting */ return (FALSE); } /******************************************************************************* ** ** Function gatt_sr_process_app_rsp ** ** Description This function checks whether the response message from application ** match any pending request or not. ** ** Returns void ** *******************************************************************************/ tGATT_STATUS gatt_sr_process_app_rsp (tGATT_TCB *p_tcb, tGATT_IF gatt_if, UINT32 trans_id, UINT8 op_code, tGATT_STATUS status, tGATTS_RSP *p_msg) { tGATT_STATUS ret_code = GATT_SUCCESS; UNUSED(trans_id); GATT_TRACE_DEBUG("gatt_sr_process_app_rsp gatt_if=%d\n", gatt_if); gatt_sr_update_cback_cnt(p_tcb, gatt_if, FALSE, FALSE); if (op_code == GATT_REQ_READ_MULTI) { /* If no error and still waiting, just return */ if (!process_read_multi_rsp (&p_tcb->sr_cmd, status, p_msg, p_tcb->payload_size)) { return (GATT_SUCCESS); } } else { if (op_code == GATT_REQ_PREPARE_WRITE && status == GATT_SUCCESS) { gatt_sr_update_prep_cnt(p_tcb, gatt_if, TRUE, FALSE); } if (op_code == GATT_REQ_EXEC_WRITE && status != GATT_SUCCESS) { gatt_sr_reset_cback_cnt(p_tcb); } p_tcb->sr_cmd.status = status; if (gatt_sr_is_cback_cnt_zero(p_tcb) && status == GATT_SUCCESS) { if (p_tcb->sr_cmd.p_rsp_msg == NULL) { p_tcb->sr_cmd.p_rsp_msg = attp_build_sr_msg (p_tcb, (UINT8)(op_code + 1), (tGATT_SR_MSG *)p_msg); } else { GATT_TRACE_ERROR("Exception!!! already has respond message\n"); } } } if (gatt_sr_is_cback_cnt_zero(p_tcb)) { if ( (p_tcb->sr_cmd.status == GATT_SUCCESS) && (p_tcb->sr_cmd.p_rsp_msg) ) { ret_code = attp_send_sr_msg (p_tcb, p_tcb->sr_cmd.p_rsp_msg); p_tcb->sr_cmd.p_rsp_msg = NULL; } else { if (p_tcb->sr_cmd.status == GATT_SUCCESS){ status = GATT_UNKNOWN_ERROR; } ret_code = gatt_send_error_rsp (p_tcb, status, op_code, p_tcb->sr_cmd.handle, FALSE); } gatt_dequeue_sr_cmd(p_tcb); } GATT_TRACE_DEBUG("gatt_sr_process_app_rsp ret_code=%d\n", ret_code); return ret_code; } /******************************************************************************* ** ** Function gatt_process_exec_write_req ** ** Description This function is called to process the execute write request ** from client. ** ** Returns void ** *******************************************************************************/ void gatt_process_exec_write_req (tGATT_TCB *p_tcb, UINT8 op_code, UINT16 len, UINT8 *p_data) { UINT8 *p = p_data, flag, i = 0; UINT32 trans_id = 0; tGATT_IF gatt_if; UINT16 conn_id; UINT16 queue_num = 0; BOOLEAN is_first = TRUE; BOOLEAN is_prepare_write_valid = FALSE; BOOLEAN is_need_dequeue_sr_cmd = FALSE; tGATT_PREPARE_WRITE_RECORD *prepare_record = NULL; tGATT_PREPARE_WRITE_QUEUE_DATA * queue_data = NULL; UNUSED(len); #if GATT_CONFORMANCE_TESTING == TRUE if (gatt_cb.enable_err_rsp && gatt_cb.req_op_code == op_code) { GATT_TRACE_DEBUG("Conformance tst: forced err rspv for Execute Write: error status=%d", gatt_cb.err_status); gatt_send_error_rsp (p_tcb, gatt_cb.err_status, gatt_cb.req_op_code, gatt_cb.handle, FALSE); return; } #endif STREAM_TO_UINT8(flag, p); /* mask the flag */ flag &= GATT_PREP_WRITE_EXEC; prepare_record = &(p_tcb->prepare_write_record); queue_num = fixed_queue_length(prepare_record->queue); //if received prepare_write packets include stack_rsp and app_rsp, //stack respond to execute_write only when stack_rsp handle has invalid_offset //or invalid_length error; //app need to respond to execute_write if it has received app_rsp handle packets if (((prepare_record->error_code_app == GATT_SUCCESS) && (prepare_record->total_num == queue_num)) || (flag == GATT_PREP_WRITE_CANCEL)){ tGATT_EXEC_WRITE_RSP gatt_exec_write_rsp; gatt_exec_write_rsp.op_code = GATT_RSP_EXEC_WRITE; gatt_send_packet(p_tcb, (UINT8 *)(&gatt_exec_write_rsp), sizeof(gatt_exec_write_rsp)); gatt_dequeue_sr_cmd(p_tcb); if (flag != GATT_PREP_WRITE_CANCEL){ is_prepare_write_valid = TRUE; } GATT_TRACE_DEBUG("Send execute_write_rsp\n"); } else if ((prepare_record->error_code_app == GATT_SUCCESS) && (prepare_record->total_num > queue_num)){ //No error for stack_rsp's handles and there exist some app_rsp's handles, //so exec_write_rsp depends to app's response; but stack_rsp's data is valid //TODO: there exist problem if stack_rsp's data is valid but app_rsp's data is not valid. is_prepare_write_valid = TRUE; } else if(prepare_record->total_num < queue_num) { GATT_TRACE_ERROR("Error in %s, line=%d, prepare write total number (%d) \ should not smaller than prepare queue number (%d)\n", \ __func__, __LINE__,prepare_record->total_num, queue_num); } else if (prepare_record->error_code_app != GATT_SUCCESS){ GATT_TRACE_DEBUG("Send error code for execute_write, code=0x%x\n", prepare_record->error_code_app); is_need_dequeue_sr_cmd = (prepare_record->total_num == queue_num) ? TRUE : FALSE; gatt_send_error_rsp(p_tcb, prepare_record->error_code_app, GATT_REQ_EXEC_WRITE, 0, is_need_dequeue_sr_cmd); } //dequeue prepare write data while(fixed_queue_try_peek_first(prepare_record->queue)) { queue_data = fixed_queue_dequeue(prepare_record->queue, FIXED_QUEUE_MAX_TIMEOUT); if (is_prepare_write_valid){ if((queue_data->p_attr->p_value != NULL) && (queue_data->p_attr->p_value->attr_val.attr_val != NULL)){ if(is_first) { //clear attr_val.attr_len before handle prepare write data queue_data->p_attr->p_value->attr_val.attr_len = 0; is_first = FALSE; } memcpy(queue_data->p_attr->p_value->attr_val.attr_val+queue_data->offset, queue_data->value, queue_data->len); //don't forget to increase the attribute value length in the gatts database. queue_data->p_attr->p_value->attr_val.attr_len += queue_data->len; } } osi_free(queue_data); } fixed_queue_free(prepare_record->queue, NULL); prepare_record->queue = NULL; /* according to ble spec, even if there is no prep write queued, * need to respond execute_write_response * Note: exec_write_rsp callback should be called after all data has been written*/ if (!gatt_sr_is_prep_cnt_zero(p_tcb)) { if (prepare_record->total_num > queue_num){ trans_id = gatt_sr_enqueue_cmd(p_tcb, op_code, 0); gatt_sr_copy_prep_cnt_to_cback_cnt(p_tcb); } for (i = 0; i < GATT_MAX_APPS; i++) { if (p_tcb->prep_cnt[i]) { gatt_if = (tGATT_IF) (i + 1); conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, gatt_if); gatt_sr_send_req_callback(conn_id, trans_id, GATTS_REQ_TYPE_WRITE_EXEC, (tGATTS_DATA *)&flag); p_tcb->prep_cnt[i] = 0; } } } prepare_record->total_num = 0; prepare_record->error_code_app = GATT_SUCCESS; } /******************************************************************************* ** ** Function gatt_process_read_multi_req ** ** Description This function is called to process the read multiple request ** from client. ** ** Returns void ** *******************************************************************************/ void gatt_process_read_multi_req (tGATT_TCB *p_tcb, UINT8 op_code, UINT16 len, UINT8 *p_data) { UINT32 trans_id; UINT16 handle = 0, ll = len; UINT8 *p = p_data, i_rcb; tGATT_STATUS err = GATT_SUCCESS; UINT8 sec_flag, key_size; tGATTS_RSP *p_msg; GATT_TRACE_DEBUG("gatt_process_read_multi_req" ); p_tcb->sr_cmd.multi_req.num_handles = 0; gatt_sr_get_sec_info(p_tcb->peer_bda, p_tcb->transport, &sec_flag, &key_size); #if GATT_CONFORMANCE_TESTING == TRUE if (gatt_cb.enable_err_rsp && gatt_cb.req_op_code == op_code) { GATT_TRACE_DEBUG("Conformance tst: forced err rspvofr ReadMultiple: error status=%d\n", gatt_cb.err_status); STREAM_TO_UINT16(handle, p); gatt_send_error_rsp (p_tcb, gatt_cb.err_status, gatt_cb.req_op_code, handle, FALSE); return; } #endif while (ll >= 2 && p_tcb->sr_cmd.multi_req.num_handles < GATT_MAX_READ_MULTI_HANDLES) { STREAM_TO_UINT16(handle, p); if ((i_rcb = gatt_sr_find_i_rcb_by_handle(handle)) < GATT_MAX_SR_PROFILES) { p_tcb->sr_cmd.multi_req.handles[p_tcb->sr_cmd.multi_req.num_handles++] = handle; /* check read permission */ if ((err = gatts_read_attr_perm_check( gatt_cb.sr_reg[i_rcb].p_db, FALSE, handle, sec_flag, key_size)) != GATT_SUCCESS) { GATT_TRACE_DEBUG("read permission denied : 0x%02x", err); break; } } else { /* invalid handle */ err = GATT_INVALID_HANDLE; break; } ll -= 2; } if (ll != 0) { GATT_TRACE_ERROR("max attribute handle reached in ReadMultiple Request."); err = GATT_INVALID_HANDLE; } if (p_tcb->sr_cmd.multi_req.num_handles == 0) { err = GATT_INVALID_HANDLE; } if (err == GATT_SUCCESS) { if ((trans_id = gatt_sr_enqueue_cmd (p_tcb, op_code, p_tcb->sr_cmd.multi_req.handles[0])) != 0) { gatt_sr_reset_cback_cnt(p_tcb); /* read multiple use multi_rsp_q's count*/ for (ll = 0; ll < p_tcb->sr_cmd.multi_req.num_handles; ll ++) { if ((p_msg = (tGATTS_RSP *)osi_malloc(sizeof(tGATTS_RSP))) != NULL) { memset(p_msg, 0, sizeof(tGATTS_RSP)) ; handle = p_tcb->sr_cmd.multi_req.handles[ll]; i_rcb = gatt_sr_find_i_rcb_by_handle(handle); p_msg->attr_value.handle = handle; err = gatts_read_attr_value_by_handle(p_tcb, gatt_cb.sr_reg[i_rcb].p_db, op_code, handle, 0, p_msg->attr_value.value, &p_msg->attr_value.len, GATT_MAX_ATTR_LEN, sec_flag, key_size, trans_id); if (err == GATT_SUCCESS || err == GATT_STACK_RSP) { gatt_sr_process_app_rsp(p_tcb, gatt_cb.sr_reg[i_rcb].gatt_if , trans_id, op_code, GATT_SUCCESS, p_msg); } /* either not using or done using the buffer, release it now */ osi_free(p_msg); } else { err = GATT_NO_RESOURCES; gatt_dequeue_sr_cmd(p_tcb); break; } } } else { err = GATT_NO_RESOURCES; } } /* in theroy BUSY is not possible(should already been checked), protected check */ if (err != GATT_SUCCESS && err != GATT_STACK_RSP && err != GATT_PENDING && err != GATT_BUSY) { gatt_send_error_rsp(p_tcb, err, op_code, handle, FALSE); } } /******************************************************************************* ** ** Function gatt_build_primary_service_rsp ** ** Description Primamry service request processed internally. Theretically ** only deal with ReadByTypeVAlue and ReadByGroupType. ** ** Returns void ** *******************************************************************************/ static tGATT_STATUS gatt_build_primary_service_rsp (BT_HDR *p_msg, tGATT_TCB *p_tcb, UINT8 op_code, UINT16 s_hdl, UINT16 e_hdl, UINT8 *p_data, tBT_UUID value) { tGATT_STATUS status = GATT_NOT_FOUND; UINT8 handle_len = 4, *p ; tGATT_SR_REG *p_rcb; tGATT_SRV_LIST_INFO *p_list = &gatt_cb.srv_list_info; tGATT_SRV_LIST_ELEM *p_srv = NULL; tBT_UUID *p_uuid; UNUSED(p_data); p = (UINT8 *)(p_msg + 1) + L2CAP_MIN_OFFSET; p_srv = p_list->p_first; while (p_srv) { p_rcb = GATT_GET_SR_REG_PTR(p_srv->i_sreg); if (p_rcb->in_use && p_rcb->s_hdl >= s_hdl && p_rcb->s_hdl <= e_hdl && p_rcb->type == GATT_UUID_PRI_SERVICE) { if ((p_uuid = gatts_get_service_uuid (p_rcb->p_db)) != NULL) { if (op_code == GATT_REQ_READ_BY_GRP_TYPE) { handle_len = 4 + p_uuid->len; } /* get the length byte in the repsonse */ if (p_msg->offset == 0) { *p ++ = op_code + 1; p_msg->len ++; p_msg->offset = handle_len; if (op_code == GATT_REQ_READ_BY_GRP_TYPE) { *p ++ = (UINT8)p_msg->offset; /* length byte */ p_msg->len ++; } } if (p_msg->len + p_msg->offset <= p_tcb->payload_size && handle_len == p_msg->offset) { if (op_code != GATT_REQ_FIND_TYPE_VALUE || gatt_uuid_compare(value, *p_uuid)) { UINT16_TO_STREAM(p, p_rcb->s_hdl); if (p_list->p_last_primary == p_srv && p_list->p_last_primary == p_list->p_last) { GATT_TRACE_DEBUG("Use 0xFFFF for the last primary attribute"); UINT16_TO_STREAM(p, 0xFFFF); /* see GATT ERRATA 4065, 4063, ATT ERRATA 4062 */ } else { UINT16_TO_STREAM(p, p_rcb->e_hdl); } if (op_code == GATT_REQ_READ_BY_GRP_TYPE) { gatt_build_uuid_to_stream(&p, *p_uuid); } status = GATT_SUCCESS; p_msg->len += p_msg->offset; } } else { break; } } } p_srv = p_srv->p_next; } p_msg->offset = L2CAP_MIN_OFFSET; return status; } /******************************************************************************* ** ** Function gatt_build_find_info_rsp ** ** Description fill the find information response information in the given ** buffer. ** ** Returns TRUE: if data filled successfully. ** FALSE: packet full, or format mismatch. ** *******************************************************************************/ static tGATT_STATUS gatt_build_find_info_rsp(tGATT_SR_REG *p_rcb, BT_HDR *p_msg, UINT16 *p_len, UINT16 s_hdl, UINT16 e_hdl) { tGATT_STATUS status = GATT_NOT_FOUND; UINT8 *p; UINT16 len = *p_len; tGATT_ATTR16 *p_attr = NULL; UINT8 info_pair_len[2] = {4, 18}; if (!p_rcb->p_db || !p_rcb->p_db->p_attr_list) { return status; } /* check the attribute database */ p_attr = (tGATT_ATTR16 *) p_rcb->p_db->p_attr_list; p = (UINT8 *)(p_msg + 1) + L2CAP_MIN_OFFSET + p_msg->len; while (p_attr) { if (p_attr->handle > e_hdl) { break; } if (p_attr->handle >= s_hdl) { if (p_msg->offset == 0) { p_msg->offset = (p_attr->uuid_type == GATT_ATTR_UUID_TYPE_16) ? GATT_INFO_TYPE_PAIR_16 : GATT_INFO_TYPE_PAIR_128; } if (len >= info_pair_len[p_msg->offset - 1]) { if (p_msg->offset == GATT_INFO_TYPE_PAIR_16 && p_attr->uuid_type == GATT_ATTR_UUID_TYPE_16) { UINT16_TO_STREAM(p, p_attr->handle); UINT16_TO_STREAM(p, p_attr->uuid); } else if (p_msg->offset == GATT_INFO_TYPE_PAIR_128 && p_attr->uuid_type == GATT_ATTR_UUID_TYPE_128 ) { UINT16_TO_STREAM(p, p_attr->handle); ARRAY_TO_STREAM (p, ((tGATT_ATTR128 *) p_attr)->uuid, LEN_UUID_128); } else if (p_msg->offset == GATT_INFO_TYPE_PAIR_128 && p_attr->uuid_type == GATT_ATTR_UUID_TYPE_32) { UINT16_TO_STREAM(p, p_attr->handle); gatt_convert_uuid32_to_uuid128(p, ((tGATT_ATTR32 *) p_attr)->uuid); p += LEN_UUID_128; } else { GATT_TRACE_ERROR("format mismatch"); status = GATT_NO_RESOURCES; break; /* format mismatch */ } p_msg->len += info_pair_len[p_msg->offset - 1]; len -= info_pair_len[p_msg->offset - 1]; status = GATT_SUCCESS; } else { status = GATT_NO_RESOURCES; break; } } p_attr = (tGATT_ATTR16 *)p_attr->p_next; } *p_len = len; return status; } /******************************************************************************* ** ** Function gatts_internal_read_by_type_req ** ** Description check to see if the ReadByType request can be handled internally. ** ** Returns void ** *******************************************************************************/ static tGATT_STATUS gatts_validate_packet_format(UINT8 op_code, UINT16 *p_len, UINT8 **p_data, tBT_UUID *p_uuid_filter, UINT16 *p_s_hdl, UINT16 *p_e_hdl) { tGATT_STATUS reason = GATT_SUCCESS; UINT16 uuid_len, s_hdl = 0, e_hdl = 0; UINT16 len = *p_len; UINT8 *p = *p_data; if (len >= 4) { /* obtain starting handle, and ending handle */ STREAM_TO_UINT16(s_hdl, p); STREAM_TO_UINT16(e_hdl, p); len -= 4; if (s_hdl > e_hdl || !GATT_HANDLE_IS_VALID(s_hdl) || !GATT_HANDLE_IS_VALID(e_hdl)) { reason = GATT_INVALID_HANDLE; } /* for these PDUs, uuid filter must present */ else if (op_code == GATT_REQ_READ_BY_GRP_TYPE || op_code == GATT_REQ_FIND_TYPE_VALUE || op_code == GATT_REQ_READ_BY_TYPE) { if (len >= 2 && p_uuid_filter != NULL) { uuid_len = (op_code == GATT_REQ_FIND_TYPE_VALUE) ? 2 : len; /* parse uuid now */ if (gatt_parse_uuid_from_cmd (p_uuid_filter, uuid_len, &p) == FALSE || p_uuid_filter->len == 0) { GATT_TRACE_DEBUG("UUID filter does not exsit"); reason = GATT_INVALID_PDU; } else { len -= p_uuid_filter->len; } } else { reason = GATT_INVALID_PDU; } } } else { reason = GATT_INVALID_PDU; } *p_data = p; *p_len = len; *p_s_hdl = s_hdl; *p_e_hdl = e_hdl; return reason; } /******************************************************************************* ** ** Function gatts_process_primary_service_req ** ** Description process ReadByGroupType/ReadByTypeValue request, for discover ** all primary services or discover primary service by UUID request. ** ** Returns void ** *******************************************************************************/ void gatts_process_primary_service_req(tGATT_TCB *p_tcb, UINT8 op_code, UINT16 len, UINT8 *p_data) { UINT8 reason = GATT_INVALID_PDU; UINT16 s_hdl = 0, e_hdl = 0; tBT_UUID uuid, value, primary_service = {LEN_UUID_16, {GATT_UUID_PRI_SERVICE}}; BT_HDR *p_msg = NULL; UINT16 msg_len = (UINT16)(sizeof(BT_HDR) + p_tcb->payload_size + L2CAP_MIN_OFFSET); memset (&value, 0, sizeof(tBT_UUID)); reason = gatts_validate_packet_format(op_code, &len, &p_data, &uuid, &s_hdl, &e_hdl); if (reason == GATT_SUCCESS) { if (gatt_uuid_compare(uuid, primary_service)) { if (op_code == GATT_REQ_FIND_TYPE_VALUE) { if (gatt_parse_uuid_from_cmd(&value, len, &p_data) == FALSE) { reason = GATT_INVALID_PDU; } } if (reason == GATT_SUCCESS) { if ((p_msg = (BT_HDR *)osi_calloc(msg_len)) == NULL) { GATT_TRACE_ERROR("gatts_process_primary_service_req failed. no resources."); reason = GATT_NO_RESOURCES; } else { reason = gatt_build_primary_service_rsp (p_msg, p_tcb, op_code, s_hdl, e_hdl, p_data, value); } } } else { if (op_code == GATT_REQ_READ_BY_GRP_TYPE) { reason = GATT_UNSUPPORT_GRP_TYPE; GATT_TRACE_DEBUG("unexpected ReadByGrpType Group: 0x%04x", uuid.uu.uuid16); } else { /* we do not support ReadByTypeValue with any non-primamry_service type */ reason = GATT_NOT_FOUND; GATT_TRACE_DEBUG("unexpected ReadByTypeValue type: 0x%04x", uuid.uu.uuid16); } } } if (reason != GATT_SUCCESS) { if (p_msg) { osi_free(p_msg); } gatt_send_error_rsp (p_tcb, reason, op_code, s_hdl, FALSE); } else { attp_send_sr_msg(p_tcb, p_msg); } } /******************************************************************************* ** ** Function gatts_process_find_info ** ** Description process find information request, for discover character ** descriptors. ** ** Returns void ** *******************************************************************************/ static void gatts_process_find_info(tGATT_TCB *p_tcb, UINT8 op_code, UINT16 len, UINT8 *p_data) { UINT8 reason = GATT_INVALID_PDU, *p; UINT16 s_hdl = 0, e_hdl = 0, buf_len; BT_HDR *p_msg = NULL; tGATT_SR_REG *p_rcb; tGATT_SRV_LIST_INFO *p_list = &gatt_cb.srv_list_info; tGATT_SRV_LIST_ELEM *p_srv = NULL; reason = gatts_validate_packet_format(op_code, &len, &p_data, NULL, &s_hdl, &e_hdl); if (reason == GATT_SUCCESS) { buf_len = (UINT16)(sizeof(BT_HDR) + p_tcb->payload_size + L2CAP_MIN_OFFSET); if ((p_msg = (BT_HDR *)osi_calloc(buf_len)) == NULL) { reason = GATT_NO_RESOURCES; } else { reason = GATT_NOT_FOUND; p = (UINT8 *)(p_msg + 1) + L2CAP_MIN_OFFSET; *p ++ = op_code + 1; p_msg->len = 2; buf_len = p_tcb->payload_size - 2; p_srv = p_list->p_first; while (p_srv) { p_rcb = GATT_GET_SR_REG_PTR(p_srv->i_sreg); if (p_rcb->in_use && !(p_rcb->s_hdl > e_hdl || p_rcb->e_hdl < s_hdl)) { reason = gatt_build_find_info_rsp(p_rcb, p_msg, &buf_len, s_hdl, e_hdl); if (reason == GATT_NO_RESOURCES) { reason = GATT_SUCCESS; break; } } p_srv = p_srv->p_next; } *p = (UINT8)p_msg->offset; p_msg->offset = L2CAP_MIN_OFFSET; } } if (reason != GATT_SUCCESS) { if (p_msg) { osi_free(p_msg); } gatt_send_error_rsp (p_tcb, reason, op_code, s_hdl, FALSE); } else { attp_send_sr_msg(p_tcb, p_msg); } } /******************************************************************************* ** ** Function gatts_process_mtu_req ** ** Description This function is called to process excahnge MTU request. ** Only used on LE. ** ** Returns void ** *******************************************************************************/ static void gatts_process_mtu_req (tGATT_TCB *p_tcb, UINT16 len, UINT8 *p_data) { UINT16 mtu = 0; UINT8 *p = p_data, i; BT_HDR *p_buf; UINT16 conn_id; /* BR/EDR conenction, send error response */ if (p_tcb->att_lcid != L2CAP_ATT_CID) { gatt_send_error_rsp (p_tcb, GATT_REQ_NOT_SUPPORTED, GATT_REQ_MTU, 0, FALSE); } else if (len < GATT_MTU_REQ_MIN_LEN) { GATT_TRACE_ERROR("invalid MTU request PDU received.\n"); gatt_send_error_rsp (p_tcb, GATT_INVALID_PDU, GATT_REQ_MTU, 0, FALSE); } else { STREAM_TO_UINT16 (mtu, p); /* mtu must be greater than default MTU which is 23/48 */ if (mtu < GATT_DEF_BLE_MTU_SIZE) { p_tcb->payload_size = GATT_DEF_BLE_MTU_SIZE; } else if (mtu > gatt_default.local_mtu) { p_tcb->payload_size = gatt_default.local_mtu; } else { p_tcb->payload_size = mtu; } /* host will set packet data length to 251 automatically if remote device support set packet data length, so l2cble_set_fixed_channel_tx_data_length() is not necessary. l2cble_set_fixed_channel_tx_data_length(p_tcb->peer_bda, L2CAP_ATT_CID, p_tcb->payload_size); */ if ((p_buf = attp_build_sr_msg(p_tcb, GATT_RSP_MTU, (tGATT_SR_MSG *) &p_tcb->payload_size)) != NULL) { attp_send_sr_msg (p_tcb, p_buf); /* Notify all registered application with new MTU size. Us a transaction ID */ /* of 0, as no response is allowed from applcations */ for (i = 0; i < GATT_MAX_APPS; i ++) { if (gatt_cb.cl_rcb[i].in_use ) { conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, gatt_cb.cl_rcb[i].gatt_if); gatt_sr_send_req_callback(conn_id, 0, GATTS_REQ_TYPE_MTU, (tGATTS_DATA *)&p_tcb->payload_size); } } } } } /******************************************************************************* ** ** Function gatts_process_read_by_type_req ** ** Description process Read By type request. ** This PDU can be used to perform: ** - read characteristic value ** - read characteristic descriptor value ** - discover characteristic ** - discover characteristic by UUID ** - relationship discovery ** ** Returns void ** *******************************************************************************/ void gatts_process_read_by_type_req(tGATT_TCB *p_tcb, UINT8 op_code, UINT16 len, UINT8 *p_data) { tBT_UUID uuid; tGATT_SR_REG *p_rcb; UINT16 msg_len = (UINT16)(sizeof(BT_HDR) + p_tcb->payload_size + L2CAP_MIN_OFFSET), buf_len, s_hdl, e_hdl, err_hdl = 0; BT_HDR *p_msg = NULL; tGATT_STATUS reason, ret; UINT8 *p; UINT8 sec_flag, key_size; tGATT_SRV_LIST_INFO *p_list = &gatt_cb.srv_list_info; tGATT_SRV_LIST_ELEM *p_srv = NULL; reason = gatts_validate_packet_format(op_code, &len, &p_data, &uuid, &s_hdl, &e_hdl); GATT_TRACE_DEBUG("%s, op_code =%x, len = %x\n", __func__, op_code, len); #if GATT_CONFORMANCE_TESTING == TRUE if (gatt_cb.enable_err_rsp && gatt_cb.req_op_code == op_code) { GATT_TRACE_DEBUG("Conformance tst: forced err rsp for ReadByType: error status=%d\n", gatt_cb.err_status); gatt_send_error_rsp (p_tcb, gatt_cb.err_status, gatt_cb.req_op_code, s_hdl, FALSE); return; } #endif if (reason == GATT_SUCCESS) { if ((p_msg = (BT_HDR *)osi_calloc(msg_len)) == NULL) { GATT_TRACE_ERROR("gatts_process_find_info failed. no resources.\n"); reason = GATT_NO_RESOURCES; } else { p = (UINT8 *)(p_msg + 1) + L2CAP_MIN_OFFSET; *p ++ = op_code + 1; /* reserve length byte */ p_msg->len = 2; buf_len = p_tcb->payload_size - 2; reason = GATT_NOT_FOUND; p_srv = p_list->p_first; while (p_srv) { p_rcb = GATT_GET_SR_REG_PTR(p_srv->i_sreg); if (p_rcb->in_use && !(p_rcb->s_hdl > e_hdl || p_rcb->e_hdl < s_hdl)) { gatt_sr_get_sec_info(p_tcb->peer_bda, p_tcb->transport, &sec_flag, &key_size); ret = gatts_db_read_attr_value_by_type(p_tcb, p_rcb->p_db, op_code, p_msg, s_hdl, e_hdl, uuid, &buf_len, sec_flag, key_size, 0, &err_hdl); if (ret != GATT_NOT_FOUND) { reason = ret; if (ret == GATT_NO_RESOURCES) { reason = GATT_SUCCESS; } } if (ret != GATT_SUCCESS && ret != GATT_NOT_FOUND) { s_hdl = err_hdl; break; } } p_srv = p_srv->p_next; } *p = (UINT8)p_msg->offset; p_msg->offset = L2CAP_MIN_OFFSET; } } if (reason != GATT_SUCCESS && reason != GATT_STACK_RSP) { if (p_msg) { osi_free(p_msg); } /* in theroy BUSY is not possible(should already been checked), protected check */ if (reason != GATT_PENDING && reason != GATT_BUSY) { gatt_send_error_rsp (p_tcb, reason, op_code, s_hdl, FALSE); } } else { attp_send_sr_msg(p_tcb, p_msg); gatt_dequeue_sr_cmd(p_tcb); } } /******************************************************************************* ** ** Function gatts_process_write_req ** ** Description This function is called to process the write request ** from client. ** ** Returns void ** *******************************************************************************/ void gatts_process_write_req (tGATT_TCB *p_tcb, UINT8 i_rcb, UINT16 handle, UINT8 op_code, UINT16 len, UINT8 *p_data) { tGATTS_DATA sr_data; UINT32 trans_id; tGATT_STATUS status; UINT8 sec_flag, key_size, *p = p_data; tGATT_SR_REG *p_sreg; UINT16 conn_id, offset = 0; memset(&sr_data, 0, sizeof(tGATTS_DATA)); sr_data.write_req.need_rsp = FALSE; switch (op_code) { case GATT_SIGN_CMD_WRITE: if (op_code == GATT_SIGN_CMD_WRITE) { GATT_TRACE_DEBUG("Write CMD with data signing" ); len -= GATT_AUTH_SIGN_LEN; } /* fall through */ case GATT_CMD_WRITE: case GATT_REQ_WRITE: sr_data.write_req.handle = handle; sr_data.write_req.len = len; if (len != 0 && p != NULL) { memcpy (sr_data.write_req.value, p, len); } break; } gatt_sr_get_sec_info(p_tcb->peer_bda, p_tcb->transport, &sec_flag, &key_size); status = gatts_write_attr_perm_check (gatt_cb.sr_reg[i_rcb].p_db, op_code, handle, sr_data.write_req.offset, p, len, sec_flag, key_size); if (status == GATT_SUCCESS) { if ((trans_id = gatt_sr_enqueue_cmd(p_tcb, op_code, handle)) != 0) { p_sreg = &gatt_cb.sr_reg[i_rcb]; conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, p_sreg->gatt_if); status = gatts_write_attr_value_by_handle(gatt_cb.sr_reg[i_rcb].p_db, handle, offset, p, len); if((op_code == GATT_REQ_WRITE) && (status == GATT_APP_RSP)){ sr_data.write_req.need_rsp = TRUE; status = GATT_PENDING; } gatt_sr_send_req_callback(conn_id, trans_id, GATTS_REQ_TYPE_WRITE, &sr_data); } else { GATT_TRACE_ERROR("Error in %s, line=%d, max pending command, send error\n", __func__, __LINE__); status = GATT_BUSY; /* max pending command, application error */ } } /* response should be sent only for write_request */ if ((op_code == GATT_REQ_WRITE) && (sr_data.write_req.need_rsp == FALSE)){ if (status == GATT_SUCCESS){ tGATT_WRITE_REQ_RSP gatt_write_req_rsp; gatt_write_req_rsp.op_code = GATT_RSP_WRITE; gatt_send_packet(p_tcb, (UINT8 *)(&gatt_write_req_rsp), sizeof(gatt_write_req_rsp)); gatt_dequeue_sr_cmd(p_tcb); } else if (status != GATT_PENDING){ /* note: in case of GATT_BUSY, will respond this application error to remote device */ gatt_send_error_rsp (p_tcb, status, op_code, handle, TRUE); } } return; } /******************************************************************************* ** ** Function gatts_attr_process_preapre_write ** ** Description This function is called to process the prepare write request ** from client. ** ** Returns void ** *******************************************************************************/ void gatt_attr_process_prepare_write (tGATT_TCB *p_tcb, UINT8 i_rcb, UINT16 handle, UINT8 op_code, UINT16 len, UINT8 *p_data) { tGATT_STATUS status; tGATT_PREPARE_WRITE_QUEUE_DATA * queue_data = NULL; tGATT_ATTR16 *p_attr; tGATT_ATTR16 *p_attr_temp; tGATTS_DATA sr_data; UINT32 trans_id = 0; UINT8 sec_flag, key_size, *p = p_data; tGATT_SR_REG *p_sreg; UINT16 conn_id, offset = 0; tGATT_SVC_DB *p_db; BOOLEAN is_need_prepare_write_rsp = FALSE; BOOLEAN is_need_queue_data = FALSE; tGATT_PREPARE_WRITE_RECORD *prepare_record = NULL; memset(&sr_data, 0, sizeof(tGATTS_DATA)); if (len < 2) { GATT_TRACE_ERROR("%s: Prepare write request was invalid - missing offset, sending error response", __func__); gatt_send_error_rsp(p_tcb, GATT_INVALID_PDU, op_code, handle, FALSE); return; } //get offset from p_data STREAM_TO_UINT16(offset, p); len -= 2; p_sreg = &gatt_cb.sr_reg[i_rcb]; conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, p_sreg->gatt_if); //prepare_record = &(prepare_write_record); prepare_record = &(p_tcb->prepare_write_record); gatt_sr_get_sec_info(p_tcb->peer_bda, p_tcb->transport, &sec_flag, &key_size); status = gatts_write_attr_perm_check (gatt_cb.sr_reg[i_rcb].p_db, op_code, handle, sr_data.write_req.offset, p, len, sec_flag, key_size); if (status == GATT_SUCCESS){ if ((trans_id = gatt_sr_enqueue_cmd(p_tcb, op_code, handle)) != 0) { p_db = gatt_cb.sr_reg[i_rcb].p_db; if (p_db && p_db->p_attr_list) { p_attr = (tGATT_ATTR16 *)p_db->p_attr_list; while (p_attr && handle >= p_attr->handle) { if (p_attr->handle == handle ) { p_attr_temp = p_attr; if (p_attr->control.auto_rsp == GATT_RSP_BY_APP) { status = GATT_APP_RSP; } else if (p_attr->p_value != NULL && offset > p_attr->p_value->attr_val.attr_max_len) { status = GATT_INVALID_OFFSET; is_need_prepare_write_rsp = TRUE; is_need_queue_data = TRUE; } else if (p_attr->p_value != NULL && ((offset + len) > p_attr->p_value->attr_val.attr_max_len)){ status = GATT_INVALID_ATTR_LEN; is_need_prepare_write_rsp = TRUE; is_need_queue_data = TRUE; } else if (p_attr->p_value == NULL) { GATT_TRACE_ERROR("Error in %s, attribute of handle 0x%x not allocate value buffer\n", __func__, handle); status = GATT_UNKNOWN_ERROR; } else { //valid prepare write request, need to send response and queue the data //status: GATT_SUCCESS is_need_prepare_write_rsp = TRUE; is_need_queue_data = TRUE; } } p_attr = (tGATT_ATTR16 *)p_attr->p_next; } } } else{ status = GATT_UNKNOWN_ERROR; GATT_TRACE_ERROR("Error in %s, Line %d: GATT BUSY\n", __func__, __LINE__); } } if (is_need_queue_data){ queue_data = (tGATT_PREPARE_WRITE_QUEUE_DATA *)osi_malloc(len + sizeof(tGATT_PREPARE_WRITE_QUEUE_DATA)); if (queue_data == NULL){ status = GATT_PREPARE_Q_FULL; } else { queue_data->p_attr = p_attr_temp; queue_data->len = len; queue_data->handle = handle; queue_data->offset = offset; memcpy(queue_data->value, p, len); if (prepare_record->queue == NULL) { prepare_record->queue = fixed_queue_new(QUEUE_SIZE_MAX); } fixed_queue_enqueue(prepare_record->queue, queue_data, FIXED_QUEUE_MAX_TIMEOUT); } } if (is_need_prepare_write_rsp){ //send prepare write response if (queue_data != NULL){ queue_data->op_code = op_code + 1; //5: op_code 1 + handle 2 + offset 2 tGATT_STATUS rsp_send_status = gatt_send_packet(p_tcb, &(queue_data->op_code), queue_data->len + 5); gatt_sr_update_prep_cnt(p_tcb, p_sreg->gatt_if, TRUE, FALSE); gatt_dequeue_sr_cmd(p_tcb); if (rsp_send_status != GATT_SUCCESS){ GATT_TRACE_ERROR("Error in %s, line=%d, fail to send prepare_write_rsp, status=0x%x\n", __func__, __LINE__, rsp_send_status); } } else{ GATT_TRACE_ERROR("Error in %s, line=%d, queue_data should not be NULL here, fail to send prepare_write_rsp\n", __func__, __LINE__); } } if ((status == GATT_APP_RSP) || (is_need_prepare_write_rsp)){ prepare_record->total_num++; memset(&sr_data, 0, sizeof(sr_data)); sr_data.write_req.is_prep = TRUE; sr_data.write_req.handle = handle; sr_data.write_req.offset = offset; sr_data.write_req.len = len; sr_data.write_req.need_rsp = (status == GATT_APP_RSP) ? TRUE : FALSE; memcpy(sr_data.write_req.value, p, len); gatt_sr_send_req_callback(conn_id, trans_id, GATTS_REQ_TYPE_WRITE, &sr_data); } else{ gatt_send_error_rsp(p_tcb, status, GATT_REQ_PREPARE_WRITE, handle, TRUE); } if ((prepare_record->error_code_app == GATT_SUCCESS) && ((status == GATT_INVALID_OFFSET) || (status == GATT_INVALID_ATTR_LEN))){ prepare_record->error_code_app = status; } } /******************************************************************************* ** ** Function gatts_process_read_req ** ** Description This function is called to process the read request ** from client. ** ** Returns void ** *******************************************************************************/ static void gatts_process_read_req(tGATT_TCB *p_tcb, tGATT_SR_REG *p_rcb, UINT8 op_code, UINT16 handle, UINT16 len, UINT8 *p_data) { UINT16 buf_len = (UINT16)(sizeof(BT_HDR) + p_tcb->payload_size + L2CAP_MIN_OFFSET); tGATT_STATUS reason; BT_HDR *p_msg = NULL; UINT8 sec_flag, key_size, *p; UINT16 offset = 0, value_len = 0; UNUSED (len); if ((p_msg = (BT_HDR *)osi_calloc(buf_len)) == NULL) { GATT_TRACE_ERROR("gatts_process_find_info failed. no resources.\n"); reason = GATT_NO_RESOURCES; } else { if (op_code == GATT_REQ_READ_BLOB) { STREAM_TO_UINT16(offset, p_data); } p = (UINT8 *)(p_msg + 1) + L2CAP_MIN_OFFSET; *p ++ = op_code + 1; p_msg->len = 1; buf_len = p_tcb->payload_size - 1; gatt_sr_get_sec_info(p_tcb->peer_bda, p_tcb->transport, &sec_flag, &key_size); reason = gatts_read_attr_value_by_handle(p_tcb, p_rcb->p_db, op_code, handle, offset, p, &value_len, buf_len, sec_flag, key_size, 0); p_msg->len += value_len; } if (reason != GATT_SUCCESS && reason != GATT_PENDING && reason != GATT_STACK_RSP) { if (p_msg) { osi_free(p_msg); } /* in theroy BUSY is not possible(should already been checked), protected check */ if (reason != GATT_BUSY) { gatt_send_error_rsp (p_tcb, reason, op_code, handle, FALSE); gatt_dequeue_sr_cmd(p_tcb); } } else if (reason == GATT_SUCCESS || reason == GATT_STACK_RSP) { attp_send_sr_msg(p_tcb, p_msg); gatt_dequeue_sr_cmd(p_tcb); } else { if (p_msg) { osi_free(p_msg); } } } /******************************************************************************* ** ** Function gatts_process_attribute_req ** ** Description This function is called to process the per attribute handle request ** from client. ** ** Returns void ** *******************************************************************************/ void gatts_process_attribute_req (tGATT_TCB *p_tcb, UINT8 op_code, UINT16 len, UINT8 *p_data) { UINT16 handle = 0; UINT8 *p = p_data, i; tGATT_SR_REG *p_rcb = gatt_cb.sr_reg; tGATT_STATUS status = GATT_INVALID_HANDLE; tGATT_ATTR16 *p_attr; if (len < 2) { GATT_TRACE_ERROR("Illegal PDU length, discard request\n"); status = GATT_INVALID_PDU; } else { STREAM_TO_UINT16(handle, p); len -= 2; } #if GATT_CONFORMANCE_TESTING == TRUE gatt_cb.handle = handle; if (gatt_cb.enable_err_rsp && gatt_cb.req_op_code == op_code) { GATT_TRACE_DEBUG("Conformance tst: forced err rsp: error status=%d\n", gatt_cb.err_status); gatt_send_error_rsp (p_tcb, gatt_cb.err_status, gatt_cb.req_op_code, handle, FALSE); return; } #endif if (GATT_HANDLE_IS_VALID(handle)) { for (i = 0; i < GATT_MAX_SR_PROFILES; i ++, p_rcb ++) { if (p_rcb->in_use && p_rcb->s_hdl <= handle && p_rcb->e_hdl >= handle) { p_attr = (tGATT_ATTR16 *)p_rcb->p_db->p_attr_list; while (p_attr) { if (p_attr->handle == handle) { switch (op_code) { case GATT_REQ_READ: /* read char/char descriptor value */ case GATT_REQ_READ_BLOB: gatts_process_read_req(p_tcb, p_rcb, op_code, handle, len, p); break; case GATT_REQ_WRITE: /* write char/char descriptor value */ case GATT_CMD_WRITE: case GATT_SIGN_CMD_WRITE: gatts_process_write_req(p_tcb, i, handle, op_code, len, p); break; case GATT_REQ_PREPARE_WRITE: gatt_attr_process_prepare_write (p_tcb, i, handle, op_code, len, p); default: break; } status = GATT_SUCCESS; break; } p_attr = (tGATT_ATTR16 *)p_attr->p_next; } break; } } } if (status != GATT_SUCCESS && op_code != GATT_CMD_WRITE && op_code != GATT_SIGN_CMD_WRITE) { gatt_send_error_rsp (p_tcb, status, op_code, handle, FALSE); } } /******************************************************************************* ** ** Function gatts_proc_srv_chg_ind_ack ** ** Description This function process the service changed indicaiton ACK ** ** Returns void ** *******************************************************************************/ static void gatts_proc_srv_chg_ind_ack(tGATT_TCB *p_tcb ) { tGATTS_SRV_CHG_REQ req; tGATTS_SRV_CHG *p_buf = NULL; GATT_TRACE_DEBUG("gatts_proc_srv_chg_ind_ack"); if ((p_buf = gatt_is_bda_in_the_srv_chg_clt_list(p_tcb->peer_bda)) != NULL) { GATT_TRACE_DEBUG("NV update set srv chg = FALSE"); p_buf->srv_changed = FALSE; memcpy(&req.srv_chg, p_buf, sizeof(tGATTS_SRV_CHG)); if (gatt_cb.cb_info.p_srv_chg_callback) { (*gatt_cb.cb_info.p_srv_chg_callback)(GATTS_SRV_CHG_CMD_UPDATE_CLIENT, &req, NULL); } } } /******************************************************************************* ** ** Function gatts_chk_pending_ind ** ** Description This function check any pending indication needs to be sent if ** there is a pending indication then sent the indication ** ** Returns void ** *******************************************************************************/ static void gatts_chk_pending_ind(tGATT_TCB *p_tcb ) { #if (GATTS_INCLUDED == TRUE) tGATT_VALUE *p_buf = (tGATT_VALUE *)fixed_queue_try_peek_first(p_tcb->pending_ind_q); GATT_TRACE_DEBUG("gatts_chk_pending_ind"); if (p_buf ) { GATTS_HandleValueIndication (p_buf->conn_id, p_buf->handle, p_buf->len, p_buf->value); osi_free(fixed_queue_try_remove_from_queue(p_tcb->pending_ind_q, p_buf)); } #endif ///GATTS_INCLUDED == TRUE } /******************************************************************************* ** ** Function gatts_proc_ind_ack ** ** Description This function process the Indication ack ** ** Returns TRUE continue to process the indication ack by the aaplication ** if the ACk is not a Service Changed Indication Ack ** *******************************************************************************/ static BOOLEAN gatts_proc_ind_ack(tGATT_TCB *p_tcb, UINT16 ack_handle) { BOOLEAN continue_processing = TRUE; GATT_TRACE_DEBUG ("gatts_proc_ind_ack ack handle=%d", ack_handle); if (ack_handle == gatt_cb.handle_of_h_r) { gatts_proc_srv_chg_ind_ack(p_tcb); /* there is no need to inform the application since srv chg is handled internally by GATT */ continue_processing = FALSE; /* after receiving ack of svc_chg_ind, reset client status */ gatt_sr_update_cl_status(p_tcb, true); } gatts_chk_pending_ind(p_tcb); return continue_processing; } /******************************************************************************* ** ** Function gatts_process_value_conf ** ** Description This function is called to process the handle value confirmation. ** ** Returns void ** *******************************************************************************/ void gatts_process_value_conf(tGATT_TCB *p_tcb, UINT8 op_code) { UINT16 handle = p_tcb->indicate_handle; UINT32 trans_id; UINT8 i; tGATT_SR_REG *p_rcb = gatt_cb.sr_reg; BOOLEAN continue_processing; UINT16 conn_id; btu_stop_timer (&p_tcb->conf_timer_ent); if (GATT_HANDLE_IS_VALID(handle)) { p_tcb->indicate_handle = 0; continue_processing = gatts_proc_ind_ack(p_tcb, handle); if (continue_processing) { for (i = 0; i < GATT_MAX_SR_PROFILES; i ++, p_rcb ++) { if (p_rcb->in_use && p_rcb->s_hdl <= handle && p_rcb->e_hdl >= handle) { trans_id = gatt_sr_enqueue_cmd(p_tcb, op_code, handle); conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, p_rcb->gatt_if); tGATTS_DATA p_data = {0}; p_data.handle = handle; gatt_sr_send_req_callback(conn_id, trans_id, GATTS_REQ_TYPE_CONF, &p_data); } } } } else { GATT_TRACE_ERROR("unexpected handle value confirmation"); } } static BOOLEAN gatts_handle_db_out_of_sync(tGATT_TCB *p_tcb, UINT8 op_code, UINT16 len, UINT8 *p_data) { if (gatt_sr_is_cl_change_aware(p_tcb)) { return false; } bool should_ignore = true; bool should_rsp = true; switch (op_code) { case GATT_REQ_READ_BY_TYPE: { tBT_UUID uuid; UINT16 s_hdl = 0; UINT16 e_hdl = 0; UINT16 db_hash_handle = gatt_cb.handle_of_database_hash; tGATT_STATUS reason = gatts_validate_packet_format(op_code, &len, &p_data, &uuid, &s_hdl, &e_hdl); if (reason == GATT_SUCCESS && (s_hdl <= db_hash_handle && db_hash_handle <= e_hdl) && (uuid.uu.uuid16 == GATT_UUID_GATT_DATABASE_HASH)) { should_ignore = false; } break; } case GATT_REQ_READ: // for pts don't process read request #if 0 { UINT16 handle = 0; UINT8 *p = p_data; tGATT_STATUS status = GATT_SUCCESS; if (len < 2) { status = GATT_INVALID_PDU; } else { STREAM_TO_UINT16(handle, p); len -= 2; } if (status == GATT_SUCCESS && handle == gatt_cb.handle_of_database_hash) { should_ignore = false; } break; } #endif case GATT_REQ_READ_BY_GRP_TYPE: case GATT_REQ_FIND_TYPE_VALUE: case GATT_REQ_FIND_INFO: case GATT_REQ_READ_BLOB: case GATT_REQ_READ_MULTI: case GATT_REQ_READ_MULTI_VAR: case GATT_REQ_WRITE: case GATT_REQ_PREPARE_WRITE: break; case GATT_CMD_WRITE: case GATT_SIGN_CMD_WRITE: should_rsp = false; break; case GATT_REQ_MTU: case GATT_REQ_EXEC_WRITE: case GATT_HANDLE_VALUE_CONF: default: should_ignore = false; break; } if (should_ignore) { if (should_rsp) { gatt_send_error_rsp(p_tcb, GATT_DATABASE_OUT_OF_SYNC, op_code, 0x0000, false); } GATT_TRACE_ERROR("database out of sync op_code %x, should_rsp %d", op_code, should_rsp); gatt_sr_update_cl_status(p_tcb, should_rsp); } return should_ignore; } /******************************************************************************* ** ** Function gatt_server_handle_client_req ** ** Description This function is called to handle the client requests to ** server. ** ** ** Returns void ** *******************************************************************************/ void gatt_server_handle_client_req (tGATT_TCB *p_tcb, UINT8 op_code, UINT16 len, UINT8 *p_data) { /* there is pending command, discard this one */ if (!gatt_sr_cmd_empty(p_tcb) && op_code != GATT_HANDLE_VALUE_CONF) { return; } /* the size of the message may not be bigger than the local max PDU size*/ /* The message has to be smaller than the agreed MTU, len does not include op code */ if (len >= p_tcb->payload_size) { GATT_TRACE_ERROR("server receive invalid PDU size:%d pdu size:%d", len + 1, p_tcb->payload_size ); /* for invalid request expecting response, send it now */ if (op_code != GATT_CMD_WRITE && op_code != GATT_SIGN_CMD_WRITE && op_code != GATT_HANDLE_VALUE_CONF) { gatt_send_error_rsp (p_tcb, GATT_INVALID_PDU, op_code, 0, FALSE); } /* otherwise, ignore the pkt */ } else { // handle database out of sync if (gatts_handle_db_out_of_sync(p_tcb, op_code, len, p_data)) { return; } switch (op_code) { case GATT_REQ_READ_BY_GRP_TYPE: /* discover primary services */ case GATT_REQ_FIND_TYPE_VALUE: /* discover service by UUID */ gatts_process_primary_service_req (p_tcb, op_code, len, p_data); break; case GATT_REQ_FIND_INFO: /* discover char descrptor */ gatts_process_find_info(p_tcb, op_code, len, p_data); break; case GATT_REQ_READ_BY_TYPE: /* read characteristic value, char descriptor value */ /* discover characteristic, discover char by UUID */ gatts_process_read_by_type_req(p_tcb, op_code, len, p_data); break; case GATT_REQ_READ: /* read char/char descriptor value */ case GATT_REQ_READ_BLOB: case GATT_REQ_WRITE: /* write char/char descriptor value */ case GATT_CMD_WRITE: case GATT_SIGN_CMD_WRITE: case GATT_REQ_PREPARE_WRITE: gatts_process_attribute_req (p_tcb, op_code, len, p_data); break; case GATT_HANDLE_VALUE_CONF: gatts_process_value_conf (p_tcb, op_code); break; case GATT_REQ_MTU: gatts_process_mtu_req (p_tcb, len, p_data); break; case GATT_REQ_EXEC_WRITE: gatt_process_exec_write_req (p_tcb, op_code, len, p_data); break; case GATT_REQ_READ_MULTI: gatt_process_read_multi_req (p_tcb, op_code, len, p_data); break; default: break; } } } #endif /* BLE_INCLUDED == TRUE && GATTS_INCLUDED == TRUE */