| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package config |
| |
| import ( |
| "fmt" |
| "strings" |
| "time" |
| |
| "mynewt.apache.org/newt/util" |
| "mynewt.apache.org/newtmgr/newtmgr/nmutil" |
| "mynewt.apache.org/newtmgr/nmxact/bledefs" |
| "mynewt.apache.org/newtmgr/nmxact/nmble" |
| "mynewt.apache.org/newtmgr/nmxact/sesn" |
| "mynewt.apache.org/newtmgr/nmxact/xport" |
| ) |
| |
| type BleConfig struct { |
| PeerAddrType bledefs.BleAddrType |
| PeerAddr bledefs.BleAddr |
| PeerName string |
| |
| OwnAddrType bledefs.BleAddrType |
| OwnAddr bledefs.BleAddr |
| |
| // Connection timeout, in seconds. |
| ConnTimeout float64 |
| |
| BlehostdPath string |
| ControllerPath string |
| |
| HciIdx int |
| } |
| |
| func NewBleConfig() *BleConfig { |
| return &BleConfig{ |
| OwnAddrType: bledefs.BLE_ADDR_TYPE_RANDOM, |
| ConnTimeout: nmutil.Timeout, |
| BlehostdPath: "blehostd", |
| } |
| } |
| |
| func einvalBleConnString(f string, args ...interface{}) error { |
| suffix := fmt.Sprintf(f, args) |
| return util.FmtNewtError("Invalid BLE connstring; %s", suffix) |
| } |
| |
| func ParseBleConnString(cs string) (*BleConfig, error) { |
| bc := NewBleConfig() |
| |
| parts := strings.Split(cs, ",") |
| for _, p := range parts { |
| kv := strings.SplitN(p, "=", 2) |
| if len(kv) != 2 { |
| return nil, einvalBleConnString("expected comma-separated "+ |
| "key=value pairs; no '=' in: %s", p) |
| } |
| |
| k := kv[0] |
| v := kv[1] |
| |
| var err error |
| switch k { |
| case "peer_addr_type": |
| bc.PeerAddrType, err = bledefs.BleAddrTypeFromString(v) |
| if err != nil { |
| return nil, einvalBleConnString("Invalid peer_addr_type: %s", v) |
| } |
| case "peer_addr": |
| bc.PeerAddr, err = bledefs.ParseBleAddr(v) |
| if err != nil { |
| return nil, einvalBleConnString("Invalid peer_addr; %s", |
| err.Error()) |
| } |
| case "peer_name": |
| bc.PeerName = v |
| case "own_addr_type": |
| bc.OwnAddrType, err = bledefs.BleAddrTypeFromString(v) |
| if err != nil { |
| return nil, einvalBleConnString("Invalid own_addr_type: %s", v) |
| } |
| case "own_addr": |
| bc.OwnAddr, err = bledefs.ParseBleAddr(v) |
| if err != nil { |
| return nil, einvalBleConnString("Invalid own_addr; %s", |
| err.Error()) |
| } |
| case "bhd_path": |
| bc.BlehostdPath = v |
| case "ctlr_path": |
| bc.ControllerPath = v |
| default: |
| return nil, einvalBleConnString("Unrecognized key: %s", k) |
| } |
| } |
| |
| bc.HciIdx = nmutil.HciIdx |
| |
| return bc, nil |
| } |
| |
| func FillSesnCfg(bx *nmble.BleXport, bc *BleConfig, sc *sesn.SesnCfg) error { |
| sc.Ble.OwnAddrType = bc.OwnAddrType |
| |
| if nmutil.DeviceName != "" { |
| bc.PeerName = nmutil.DeviceName |
| } |
| |
| if bc.PeerName != "" { |
| scanPred := func(r bledefs.BleAdvReport) bool { |
| return r.Fields.Name != nil && *r.Fields.Name == bc.PeerName |
| } |
| dev, err := nmble.DiscoverDevice( |
| bx, bc.OwnAddrType, 15*time.Second, scanPred) |
| |
| if err != nil { |
| return err |
| } |
| if dev == nil { |
| return util.FmtNewtError( |
| "Unable to discover device with name \"%s\"", bc.PeerName) |
| } |
| |
| sc.PeerSpec.Ble = *dev |
| } else { |
| sc.PeerSpec.Ble = bledefs.BleDev{ |
| AddrType: bc.PeerAddrType, |
| Addr: bc.PeerAddr, |
| } |
| } |
| |
| sc.Ble.Central.ConnTimeout = |
| time.Duration(bc.ConnTimeout*1000000000) * time.Nanosecond |
| sc.Ble.CloseTimeout = 10000 * time.Millisecond |
| |
| sc.Ble.WriteRsp = nmutil.BleWriteRsp |
| |
| return nil |
| } |
| |
| func BuildBleXport(bc *BleConfig) (xport.Xport, error) { |
| params := nmble.NewXportCfg() |
| params.SockPath = "/tmp/blehostd-uds" |
| params.BlehostdPath = bc.BlehostdPath |
| params.DevPath = bc.ControllerPath |
| params.BlehostdAcceptTimeout = 2 * time.Second |
| params.Restart = false |
| |
| bx, err := nmble.NewBleXport(params) |
| if err != nil { |
| return nil, util.ChildNewtError(err) |
| } |
| |
| return bx, nil |
| } |