Create custom BlueZ agent

btsetup.go

@@ -1,27 +1,116 @@
 package infinitime
 
 import (
+	"github.com/godbus/dbus/v5"
 	bt "github.com/muka/go-bluetooth/api"
 	"github.com/muka/go-bluetooth/bluez/profile/adapter"
+	"github.com/muka/go-bluetooth/bluez/profile/agent"
+	"github.com/muka/go-bluetooth/hw/linux/btmgmt"
 )
 
 var defaultAdapter *adapter.Adapter1
+var itdAgent *Agent
 
 func Init() {
+	conn, err := dbus.SystemBus()
+	if err != nil {
+		panic(err)
+	}
+
+	ag := &Agent{}
+	err = agent.ExposeAgent(conn, ag, agent.CapKeyboardDisplay, true)
+	if err != nil {
+		panic(err)
+	}
+
 	// Get bluez default adapter
 	da, err := bt.GetDefaultAdapter()
 	if err != nil {
 		panic(err)
 	}
 
-	da.SetPowered(true)
+	daMgmt := btmgmt.NewBtMgmt(bt.GetDefaultAdapterID())
+	daMgmt.SetPowered(true)
 
 	defaultAdapter = da
+	itdAgent = ag
 }
 
 func Exit() error {
 	if defaultAdapter != nil {
 		defaultAdapter.Close()
 	}
+	agent.RemoveAgent(itdAgent)
 	return bt.Exit()
 }
+
+var errAuthFailed = dbus.NewError("org.bluez.Error.AuthenticationFailed", nil)
+
+// Agent implements the agent.Agent1Client interface.
+// It only requires RequestPasskey as that is all InfiniTime
+// will use.
+type Agent struct {
+	ReqPasskey func() (uint32, error)
+}
+
+// Release returns nil
+func (*Agent) Release() *dbus.Error {
+	return nil
+}
+
+// RequestPinCode returns an empty string and nil
+func (*Agent) RequestPinCode(device dbus.ObjectPath) (pincode string, err *dbus.Error) {
+	return "", nil
+}
+
+// DisplayPinCode returns nil
+func (*Agent) DisplayPinCode(device dbus.ObjectPath, pincode string) *dbus.Error {
+	return nil
+}
+
+// RequestPasskey runs Agent.ReqPasskey and returns the result
+func (a *Agent) RequestPasskey(device dbus.ObjectPath) (uint32, *dbus.Error) {
+	if a.ReqPasskey == nil {
+		return 0, errAuthFailed
+	}
+	passkey, err := a.ReqPasskey()
+	if err != nil {
+		return 0, errAuthFailed
+	}
+	return passkey, nil
+}
+
+// DisplayPasskey returns nil
+func (*Agent) DisplayPasskey(device dbus.ObjectPath, passkey uint32, entered uint16) *dbus.Error {
+	return nil
+}
+
+// RequestConfirmation returns nil
+func (*Agent) RequestConfirmation(device dbus.ObjectPath, passkey uint32) *dbus.Error {
+	return nil
+}
+
+// RequestAuthorization returns nil
+func (*Agent) RequestAuthorization(device dbus.ObjectPath) *dbus.Error {
+	return nil
+}
+
+// AuthorizeService returns nil
+func (*Agent) AuthorizeService(device dbus.ObjectPath, uuid string) *dbus.Error {
+	return nil
+}
+
+// Cancel returns nil
+func (*Agent) Cancel() *dbus.Error {
+	return nil
+}
+
+// Path returns "/dev/arsenm/infinitime/Agent"
+func (*Agent) Path() dbus.ObjectPath {
+	return "/dev/arsenm/infinitime/Agent"
+}
+
+// Interface returns "org.bluez.Agent1"
+func (*Agent) Interface() string {
+	return "org.bluez.Agent1"
+}