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#!/usr/bin/env python3
# Generate udev rules from music player identification (.mpi) files
#
# (C) 2009 Canonical Ltd.
# Author: Martin Pitt <martin.pitt@ubuntu.com>
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
import sys, configparser, os.path, os
# translation of mpi Device keys to udev attributes
mpi2udev = {
'vendorid': 'ATTRS{idVendor}=="%s"',
'productid': 'ATTRS{idProduct}=="%s"',
'usbvendor': 'ATTRS{vendor}=="%s"',
'usbmodel': 'ATTRS{model}=="%s"',
'usbproduct': 'ATTRS{product}=="%s"',
'usbmanufacturer': 'ATTRS{manufacturer}=="%s"',
}
def parse_mpi(mpi, hwdb):
'''Print udev rule for given ConfigParser object.'''
cp = configparser.RawConfigParser()
assert cp.read(mpi, encoding='UTF-8')
rule = ''
for name in ['usbvendor', 'usbproduct', 'usbmodel', 'usbmanufacturer']:
try:
value = cp.get('Device', name)
rule += mpi2udev[name] % value + ', '
except configparser.NoOptionError:
continue
# if using hwdb and no info other than idVendor+idProduct was found, we don't need to write
# an udev rule
if hwdb and not rule:
return
try:
usbids = {}
for usbid in cp.get('Device', 'devicematch').split(';'):
if len(usbid.split(':')) != 3:
continue
(subsystem, vid, pid) = usbid.split(':')
if subsystem != "usb":
continue
if vid in usbids:
usbids[vid].append(pid)
else:
usbids[vid] = [ pid ]
for vid, pids in usbids.items():
rule += 'ATTRS{idVendor}=="%s", ATTRS{idProduct}=="%s"'% (vid, '|'.join(pids)) + ', '
except configparser.NoOptionError:
pass
# if no information was found, don't write a rule at all
if not rule:
return
try:
m = cp.get('Device', 'product')
rule = ('# %s\n' % m) + rule
except configparser.NoOptionError:
pass
rule += 'ENV{ID_MEDIA_PLAYER}="%s"' % os.path.splitext(os.path.basename(mpi))[0]
# do we have an icon?
try:
icon = cp.get('Device', 'icon')
# breaks media player detection : https://bugs.launchpad.net/ubuntu/+source/gvfs/+bug/657609
# rule += ', ENV{UDISKS_PRESENTATION_ICON_NAME}="%s"' % icon
except configparser.NoOptionError:
pass
# empty line between blocks
rule += '\n\n'
# write bytes so that we are independent of the locale
os.write(sys.stdout.fileno(), rule.encode('UTF-8'))
#
# main
#
# udev rules header
os.write(sys.stdout.fileno(), b'''ACTION!="add|change", GOTO="media_player_end"
# catch MTP devices
ENV{DEVTYPE}=="usb_device", GOTO="media_player_start"
# catch UMS devices
SUBSYSTEM!="block", GOTO="media_player_end"
SUBSYSTEMS=="usb", GOTO="media_player_start"
GOTO="media_player_end"
LABEL="media_player_start"
''')
# the first argument should be "hwdb" or "udev"
hwdb = False
if sys.argv[1] == 'hwdb':
hwdb = True
elif sys.argv[1] != 'udev':
sys.stderr.write('Unknown mode %s. Must be "hwdb" or "udev".\n' % sys.argv[1])
sys.exit(1)
# parse MPI files
for f in sys.argv[2:]:
parse_mpi(f, hwdb)
# udev rules footer
os.write(sys.stdout.fileno(), b'\nLABEL="media_player_end"\n')
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