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#!/usr/bin/env ruby
=begin
This file is part of softSIM.
softSIM is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
softSIM is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with sofSIM. If not, see <http://www.gnu.org/licenses/>.
Copyright (C) 2011 Kevin "tsaitgaist" Redon kevredon@mail.tsaitgaist.info
=end
require 'dbus' # libdbus-ruby
=begin
to monitor bluetooth traffic
sudo aptitude install bluez-hcidump
sudo hcidump -x -i hci0 rfcomm
=end
# class to connect to BT SAP server using BlueZ over dbus
# connect will establish connection to BTSAP server, and return the serial port
# design note : can not inherit SerialPort
# TODO :
# - scan only for BTSAP
# - test if paired device is available before scanning
class BluetoothSAPSerial
# bluetooth SAP UUID
SAP_UUID = "0000112d-0000-1000-8000-00805f9b34fb"
SAP = SAP_UUID[4,4]
# scan duration in s
SCAN_DURATION = 5
# select a device
def initialize
@bt_service = BluetoothSAPSerial.service()
@bt_manager = BluetoothSAPSerial.manager(@bt_service)
@bt_adapter = BluetoothSAPSerial.adapter(@bt_service,@bt_manager)
@bt_device_addr = BluetoothSAPSerial.device(@bt_service,@bt_adapter)
end
# get bluetooth service
# setting up the bluetooth
def self.service
# bluetooth is on the system dbus
bus = DBus::SystemBus.instance
# the bluetooth service is provided by Bluez
bt_service = bus.service("org.bluez")
return bt_service
end
# get bt_manager
# needs a service
def self.manager (bt_service)
# the main object is /
bt_manager = bt_service.object("/")
# load the methods
bt_manager.introspect
# get the rigth interface for the manager
bt_manager.default_iface = "org.bluez.Manager"
return bt_manager
end
# get bt adapter
# needs a service and manager
def self.adapter (bt_service,bt_manager)
# list adapters
bt_adapter_list = bt_manager.ListAdapters()[0]
bt_adapter_default = bt_manager.DefaultAdapter()[0]
# get information about adapters
bt_adapters = []
bt_adapter_list.each do |adapter|
bt_adapter = bt_service.object(adapter)
bt_adapter.introspect
bt_adapter.default_iface = "org.bluez.Adapter"
#$stdout.puts bt_abapter_object["org.bluez.Adapter"].Address
bt_adapter = bt_adapter.GetProperties()[0]
bt_adapters << {
:object => adapter,
:name => bt_adapter["Name"],
:address => bt_adapter["Address"],
:adapter => adapter.split('/')[-1],
:default => adapter==bt_adapter_default
}
end
# select adapter
if bt_adapters.size==0 then
raise "no Bluetooth adapter available"
elsif bt_adapters.size==1 then
bt_adapter = bt_adapters[0]
else
$stdout.puts "multiple bluetooth adapter "
bt_adapters.each_index do |i|
bt_adapter = bt_adapters[i]
$stdout.puts "#{i}) #{bt_adapter[:adapter]} (#{bt_adapter[:address]} - #{bt_adapter[:name]})#{bt_adapter[:default] ? ' [default]' : ''}"
end
$stdout.print "select adapter : "
adapter = $stdin.gets.chomp
if adapter.length==0 then
bt_adapters.each_index do |i|
if bt_adapters[i][:default] then
bt_adapter = bt_adapters[i]
end
end
else
bt_adapter = bt_adapters[adapter.to_i]
end
end
$stdout.puts "using adapter #{bt_adapter[:adapter]} (#{bt_adapter[:address]} - #{bt_adapter[:name]})"
# getting adapter
bt_adapter = bt_service.object(bt_adapter[:object])
bt_adapter.introspect
bt_adapter.default_iface = "org.bluez.Adapter"
return bt_adapter
end
# get bt device addr with SAP
# needs a service and adapter
def self.device (bt_service,bt_adapter)
# discovering devices
# remenber discovered devices (sort of thread)
devices = {}
bt_adapter.on_signal("DeviceFound") do |address,properties|
devices[address]=properties
end
# scan for devices
$stdout.puts "scanning for #{SCAN_DURATION} seconds"
bt_adapter.RequestSession()
bt_adapter.StartDiscovery()
sleep SCAN_DURATION
bt_adapter.StopDiscovery()
bt_adapter.ReleaseSession()
# list found devices
if devices.size==0 then
puts "no devices found"
exit 0
end
$stdout.puts "#{devices.size} device(s) found :"
devices.each do |address,properties|
$stdout.puts "- #{properties["Name"]} (#{properties["Address"]})"
end
# check for SAP
$stdout.puts "SAP capable devices :"
sap_devices = []
devices.each do |address,properties|
# verify if the device already exists
device_object = "dev_"+properties["Address"].gsub(/:/,"_")
device_exists = false
bt_adapter.subnodes.each do |device|
device_exists = true if device == device_object
end
# get the device (create it if it does not exist)
if !device_exists then
device_object = bt_adapter.CreateDevice(properties["Address"])[0]
else
device_object = bt_adapter.path+"/"+device_object
end
# get the device
bt_device = bt_service.object(device_object)
bt_device.introspect
bt_device.default_iface = "org.bluez.Device"
# find SAP in the UUIDs
sap = false
bt_device.GetProperties()[0]["UUIDs"].each do |uuid|
sap = true if uuid[4,4]==SAP
end
$stdout.puts "- #{properties["Name"]} (#{properties["Address"]}) #{sap ? 'has' : 'has no'} SAP"
# remember device if it has SAP
sap_devices << { :name => properties["Name"] , :addr => properties["Address"]} if sap
# remove created object
bt_adapter.RemoveDevice(device_object) unless properties["Paired"] or properties["Trusted"]
end
# select SAP device to use
if sap_devices.size == 0 then
$stderr.puts "no SAP devices found"
exit 1
elsif sap_devices.size == 1 then
sap_device = sap_devices[0]
else
$stdout.puts "multiple devices possible"
sap_devices.each_index do |i|
$stdout.puts "- #{sap_devices[0][:name]} (#{sap_devices[0][:addr]}"
end
$stdout.print "select device : "
sap_device = $stdin.gets.chomp
sap_device = sap_devices[sap_device]
end
$stdout.puts "using device #{sap_device[:name]} (#{sap_device[:addr]})"
return sap_device[:addr]
end
# connet to device (get rfcomm)
def connect
# verify if the device already exists
sap_object = "dev_"+@bt_device_addr.gsub(/:/,"_")
sap_exists = false
@bt_adapter.subnodes.each do |device|
sap_exists = true if device == sap_object
end
# get the device (create it if it does not exist)
if !sap_exists then
sap_object = @bt_adapter.CreateDevice(@bt_device_addr)[0]
else
sap_object = @bt_adapter.path+"/"+sap_object
end
# create device
# return : port name
@bt_sap = @bt_service.object(sap_object)
@bt_sap.introspect
# is it paired ?
@bt_sap.default_iface = "org.bluez.Device"
@paired = @bt_sap.GetProperties()[0]["Paired"]
unless @paired then
$stdout.puts "enter PIN (16 digits) on the device, then confirm it on the computer"
end
# connect to device
@bt_sap.default_iface = "org.bluez.Serial"
begin
@rfcomm = @bt_sap.Connect(SAP_UUID)[0]
rescue DBus::Error => e
if e.to_s == "org.bluez.Error.Failed: Connection refused (111)" then
$stderr.puts "Connection to device failed. Restarting the device might help"
exit 1
elsif e.to_s == "org.bluez.Error.Failed: Connection timed out" then
$stderr.puts "Device does not respond to connection request"
exit 1
else
raise
end
end
@bt_sap.default_iface = "org.bluez.Device"
@paired = @bt_sap.GetProperties()[0]["Paired"]
@trusted = @bt_sap.GetProperties()[0]["Trusted"]
return @rfcomm
end
# close port
def close()
@bt_sap.default_iface = "org.bluez.Serial"
#disconnect the serial port
@bt_sap.Disconnect(@rfcomm)
# remove device
@bt_adapter.RemoveDevice(@bt_sap.path) unless @trusted or @paired
end
end
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