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#!/usr/bin/env ruby
RUNNING_FILE = '/tmp/.fix-bt-a2dp.running'
USER_FILE = '/etc/.fix-bt-a2dp.user'
DEVICE_PROFILE_FILE = '/etc/.fix-bt-a2dp.device-profiles'
ROOT_UID = 0
if system("which notify-send &> /dev/null")
def gui_notify(msg)
puts "notify-send: #{msg}"
`notify-send '#{msg}'`
end
else
def gui_notify(msg)
puts "notify-send: #{msg}"
end
end
def command_failed(name, stdout)
if stdout.strip.empty?
raise "#{name} failed"
else
raise "#{name} failed:\n#{stdout}"
end
end
DEVICE_PROFILE_MAPPING =
File.exist?(DEVICE_PROFILE_FILE) ? Hash[
File.read(DEVICE_PROFILE_FILE).lines.map {|l| l.split('=') }
] : {}
def bluetoothctl_info_value(v)
return true if v.downcase == 'yes'
return false if v.downcase == 'no'
v
end
def bluetoothctl_info(mac)
Hash[
`bluetoothctl info #{mac}`.lines.drop(1).map do |line|
line.split(':', 2).map(&:strip)
end.map do |k, v|
[k.downcase.to_sym, v]
end.group_by do |k, _v|
k
end.map do |k, v|
if v.count == 1
[k, bluetoothctl_info_value(v[0][1].to_s)]
else
[k, v.map {|vv| vv[1]}]
end
end
]
# will return {} if dev of mac not found
end
def have_audio_sink?(uuid_values)
uuid_value = uuid_values.kind_of?(Array) ? uuid_values.join : uuid_values
uuid_value.to_s.downcase.gsub(' ', '').include?("audiosink")
end
def enable_a2dp(name, mac, bluez_mac, info)
puts "enabling #{name}, mac: #{mac}"
puts ">> bluetoothctl connect #{mac}"
bluetoothctl_connect_out = `bluetoothctl connect #{mac}`
unless $?.success? && bluetoothctl_connect_out.downcase.include?('successful')
command_failed('bluetoothctl connect', bluetoothctl_connect_out)
end
sleep 1
profile_name = DEVICE_PROFILE_MAPPING[name] || 'a2dp_sink'
puts ">> pacmd set-card-profile bluez_card.#{bluez_mac} #{profile_name}"
set_card_profile_out = `pacmd set-card-profile bluez_card.#{bluez_mac} #{profile_name}`
unless $?.success? && set_card_profile_out == ''
command_failed('pacmd set-card-profile', set_card_profile_out)
end
puts "a2dp enabled for #{name}!"
gui_notify("#{name} connected and set to #{profile_name}")
end
def scan_enable_a2dp
bt_devs = `bluetoothctl devices`
command_failed('`bluetoothctl devices`', bt_devs) unless $?.success?
pacmd_sinks = `pacmd list-sinks`
command_failed('`pacmd list-sinks`', pacmd_sinks) unless $?.success?
bt_sinks_no_a2dp = bt_devs.lines.map do |bt_dev_line|
/^(\S+)\s(\S+)\s(.+)$/.match(bt_dev_line).to_a.drop(2)
end.map do |mac, name|
[name, mac, "#{mac.gsub(':', '_')}", bluetoothctl_info(mac)]
end.keep_if do |name, mac, bluez_mac, info|
!info.empty? &&
info[:paired] &&
info[:trusted] &&
!info[:blocked] &&
info[:connected] &&
have_audio_sink?(info[:uuid]) &&
!pacmd_sinks.include?("bluez_sink.#{bluez_mac}.a2dp_sink")
end
if bt_sinks_no_a2dp.empty?
puts "No bluetooth devices with audio sink and without A2DP"
else
puts "Bluetooth devices with audio sink and without A2DP: #{bt_sinks_no_a2dp.map(&:first).join(', ')}"
bt_sinks_no_a2dp.each do |name, mac, bluez_mac, info|
begin
enable_a2dp(name, mac, bluez_mac, info)
rescue => e
STDERR.puts e
end
end
puts "done!"
end
end
def main
if File.exist?(RUNNING_FILE)
puts "already running at pid #{File.read(RUNNING_FILE)} (#{RUNNING_FILE} exists)...exit"
return 0
end
return_code = 1
File.open(RUNNING_FILE, 'w') {|f| f.write(Process.pid.to_s) }
puts "waiting for 5 seconds..."
sleep 5
begin
scan_enable_a2dp
return_code = 0
rescue => e
STDERR.puts e
end
`rm #{RUNNING_FILE}`
return_code
end
if Process.uid == ROOT_UID
if ARGV[0] == 'set-device-profile'
`rm -f #{DEVICE_PROFILE_FILE}`
name = ARGV[1]
profile = ARGV[2]
File.open(DEVICE_PROFILE_FILE, 'w') do |f|
f.write(
DEVICE_PROFILE_MAPPING
.merge(name => profile)
.to_a.map {|kv| kv.join('=')}.join("\n")
)
end
exit 0
elsif ARGV[0] == 'set-user'
`rm -f #{USER_FILE}`
user = ARGV[1].strip
uid = `id -u #{user}`.strip
xdg_runtime_dir = ENV['XDG_RUNTIME_DIR'] || "/run/user/#{uid}"
File.open(USER_FILE, 'w') {|f| f.write("#{user}:#{xdg_runtime_dir}") }
exit 0
elsif Process.uid == ROOT_UID && File.exist?(USER_FILE)
user, xdg_runtime_dir = File.read(USER_FILE).strip.split(':')
puts ">> XDG_RUNTIME_DIR=#{xdg_runtime_dir} su #{user} -c #{__FILE__}"
exec({'XDG_RUNTIME_DIR' => xdg_runtime_dir}, "su #{user} -c #{__FILE__}")
else
STDERR.puts "As root, please run this first:\n\t#{__FILE__} set-user [user]"
exit 1
end
else
exit main
end
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