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560 lines
20 KiB
560 lines
20 KiB
#
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# Copyright (C) 2012 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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# Red Hat Author(s): Martin Gracik <mgracik@redhat.com>
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# Vratislav Podzimek <vpodzime@redhat.com>
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#
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"""
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This module provides functions for dealing with keyboard layouts/keymaps in
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Anaconda and the LocaledWrapper class with methods for setting, getting and
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mutually converting X layouts and VConsole keymaps.
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"""
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import os
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import re
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import shutil
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from pyanaconda import iutil
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from pyanaconda import safe_dbus
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from pyanaconda.constants import DEFAULT_VC_FONT, DEFAULT_KEYBOARD
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from pyanaconda.flags import can_touch_runtime_system
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from pyanaconda.iutil import open # pylint: disable=redefined-builtin
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import gi
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gi.require_version("GLib", "2.0")
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from gi.repository import GLib
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import logging
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log = logging.getLogger("anaconda")
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LOCALED_SERVICE = "org.freedesktop.locale1"
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LOCALED_OBJECT_PATH = "/org/freedesktop/locale1"
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LOCALED_IFACE = "org.freedesktop.locale1"
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# should match and parse strings like 'cz' or 'cz (qwerty)' regardless of white
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# space
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LAYOUT_VARIANT_RE = re.compile(r'^\s*([/\w]+)\s*' # layout plus
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r'(?:(?:\(\s*([-\w]+)\s*\))' # variant in parentheses
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r'|(?:$))\s*') # or nothing
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class KeyboardConfigError(Exception):
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"""Exception class for keyboard configuration related problems"""
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pass
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class InvalidLayoutVariantSpec(Exception):
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"""
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Exception class for errors related to parsing layout and variant specification strings.
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"""
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pass
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def parse_layout_variant(layout_variant_str):
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"""
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Parse layout and variant from the string that may look like 'layout' or
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'layout (variant)'.
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:param layout_variant_str: keyboard layout and variant string specification
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:type layout_variant_str: str
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:return: the (layout, variant) pair, where variant can be ""
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:rtype: tuple
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:raise InvalidLayoutVariantSpec: if the given string isn't a valid layout
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and variant specification string
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"""
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match = LAYOUT_VARIANT_RE.match(layout_variant_str)
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if not match:
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msg = "'%s' is not a valid keyboard layout and variant specification" % layout_variant_str
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raise InvalidLayoutVariantSpec(msg)
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layout, variant = match.groups()
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# groups may be (layout, None) if no variant was specified
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return (layout, variant or "")
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def join_layout_variant(layout, variant=""):
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"""
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Join layout and variant to form the commonly used 'layout (variant)'
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or 'layout' (if variant is missing) format.
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:type layout: string
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:type variant: string
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:return: 'layout (variant)' or 'layout' string
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:rtype: string
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"""
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if variant:
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return "%s (%s)" % (layout, variant)
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else:
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return layout
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def normalize_layout_variant(layout_str):
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"""
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Normalize keyboard layout and variant specification given as a single
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string. E.g. for a 'layout(variant) string missing the space between the
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left parenthesis return 'layout (variant)' which is a proper layout and
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variant specification we use.
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:param layout_str: a string specifying keyboard layout and its variant
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:type layout_str: string
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"""
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layout, variant = parse_layout_variant(layout_str)
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return join_layout_variant(layout, variant)
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def populate_missing_items(keyboard):
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"""
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Function that populates keyboard.vc_keymap and keyboard.x_layouts if they
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are missing. By invoking LocaledWrapper's methods this function READS AND
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WRITES CONFIGURATION FILES (but tries to keep their content unchanged).
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:type keyboard: ksdata.keyboard object
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"""
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localed = LocaledWrapper()
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if keyboard._keyboard and not (keyboard.vc_keymap or keyboard.x_layouts):
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# we were given just a value in the old format, use it as a vc_keymap
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keyboard.vc_keymap = keyboard._keyboard
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if keyboard.x_layouts and not keyboard.vc_keymap:
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keyboard.vc_keymap = localed.convert_layout(keyboard.x_layouts[0])
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if not keyboard.vc_keymap:
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keyboard.vc_keymap = DEFAULT_KEYBOARD
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if not keyboard.x_layouts:
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c_lay_var = localed.convert_keymap(keyboard.vc_keymap)
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keyboard.x_layouts.append(c_lay_var)
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def write_keyboard_config(keyboard, root, convert=True):
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"""
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Function that writes files with layouts configuration to
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$root/etc/X11/xorg.conf.d/01-anaconda-layouts.conf and
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$root/etc/vconsole.conf.
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:param keyboard: ksdata.keyboard object
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:param root: path to the root of the installed system
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:param convert: whether to convert specified values to get the missing
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ones
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:param weight: weight (prefix) of the xorg.conf file written out
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"""
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if convert:
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populate_missing_items(keyboard)
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xconf_dir = "/etc/X11/xorg.conf.d"
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xconf_file = "00-keyboard.conf"
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xconf_file_path = os.path.normpath(xconf_dir + "/" + xconf_file)
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vcconf_dir = os.path.normpath(root + "/etc")
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vcconf_file = "vconsole.conf"
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errors = []
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try:
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if not os.path.isdir(xconf_dir):
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os.makedirs(xconf_dir)
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except OSError:
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errors.append("Cannot create directory xorg.conf.d")
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if keyboard.x_layouts:
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localed_wrapper = LocaledWrapper()
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if root != "/":
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# writing to a different root, we need to save these values, so that
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# we can restore them when we have the file written out
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layouts_variants = localed_wrapper.layouts_variants
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options = localed_wrapper.options
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# set systemd-localed's layouts, variants and switch options, which
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# also generates a new conf file
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localed_wrapper.set_layouts(keyboard.x_layouts,
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keyboard.switch_options)
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# make sure the right directory exists under the given root
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rooted_xconf_dir = os.path.normpath(root + "/" + xconf_dir)
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try:
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if not os.path.isdir(rooted_xconf_dir):
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os.makedirs(rooted_xconf_dir)
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except OSError:
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errors.append("Cannot create directory xorg.conf.d")
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# copy the file to the chroot
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try:
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shutil.copy2(xconf_file_path,
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os.path.normpath(root + "/" + xconf_file_path))
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except IOError:
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# The file may not exist (eg. text install) so don't raise
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pass
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# restore the original values
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localed_wrapper.set_layouts(layouts_variants,
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options)
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else:
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try:
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# just let systemd-localed write out the conf file
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localed_wrapper.set_layouts(keyboard.x_layouts,
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keyboard.switch_options)
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except InvalidLayoutVariantSpec as ilvs:
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# some weird value appeared as a requested X layout
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log.error("Failed to write out config file: %s", ilvs)
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# try default
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keyboard.x_layouts = [DEFAULT_KEYBOARD]
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localed_wrapper.set_layouts(keyboard.x_layouts,
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keyboard.switch_options)
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if keyboard.vc_keymap:
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try:
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with open(os.path.join(vcconf_dir, vcconf_file), "w") as fobj:
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fobj.write('KEYMAP="%s"\n' % keyboard.vc_keymap)
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# systemd now defaults to a font that cannot display non-ascii
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# characters, so we have to tell it to use a better one
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fobj.write('FONT="%s"\n' % DEFAULT_VC_FONT)
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except IOError:
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errors.append("Cannot write vconsole configuration file")
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if errors:
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raise KeyboardConfigError("\n".join(errors))
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def _try_to_load_keymap(keymap):
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"""
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Method that tries to load keymap and returns boolean indicating if it was
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successfull or not. It can be used to test if given string is VConsole
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keymap or not, but in case it is given valid keymap, IT REALLY LOADS IT!.
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:type keymap: string
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:raise KeyboardConfigError: if loadkeys command is not available
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:return: True if given string was a valid keymap and thus was loaded,
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False otherwise
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"""
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# BUG: systemd-localed should be able to tell us if we are trying to
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# activate invalid keymap. Then we will be able to get rid of this
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# fuction
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ret = 0
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try:
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ret = iutil.execWithRedirect("loadkeys", [keymap])
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except OSError as oserr:
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msg = "'loadkeys' command not available (%s)" % oserr.strerror
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raise KeyboardConfigError(msg)
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return ret == 0
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def activate_keyboard(keyboard):
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"""
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Try to setup VConsole keymap and X11 layouts as specified in kickstart.
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:param keyboard: ksdata.keyboard object
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:type keyboard: ksdata.keyboard object
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"""
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localed = LocaledWrapper()
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c_lays_vars = []
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c_keymap = ""
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if keyboard._keyboard and not (keyboard.vc_keymap or keyboard.x_layouts):
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# we were give only one value in old format of the keyboard command
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# try to guess if we were given VConsole keymap or X11 layout
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is_keymap = _try_to_load_keymap(keyboard._keyboard)
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if is_keymap:
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keyboard.vc_keymap = keyboard._keyboard
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else:
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keyboard.x_layouts.append(keyboard._keyboard)
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if keyboard.vc_keymap:
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valid_keymap = _try_to_load_keymap(keyboard.vc_keymap)
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if not valid_keymap:
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log.error("'%s' is not a valid VConsole keymap, not loading",
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keyboard.vc_keymap)
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keyboard.vc_keymap = None
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else:
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# activate VConsole keymap and get converted layout and variant
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converted = localed.set_and_convert_keymap(keyboard.vc_keymap)
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# localed may give us multiple comma-separated layouts+variants
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c_lays_vars = converted.split(",")
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if not keyboard.x_layouts:
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if c_lays_vars:
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# suggested by systemd-localed for a requested VConsole keymap
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keyboard.x_layouts += c_lays_vars
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elif keyboard.vc_keymap:
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# nothing suggested by systemd-localed, but we may try to use the
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# same string for both VConsole keymap and X layout (will fail
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# safely if it doesn't work)
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keyboard.x_layouts.append(keyboard.vc_keymap)
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if keyboard.x_layouts:
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c_keymap = localed.set_and_convert_layout(keyboard.x_layouts[0])
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if not keyboard.vc_keymap:
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keyboard.vc_keymap = c_keymap
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# write out keyboard configuration for the X session
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write_keyboard_config(keyboard, root="/", convert=False)
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class LocaledWrapperError(KeyboardConfigError):
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"""Exception class for reporting Localed-related problems"""
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pass
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class LocaledWrapper(object):
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"""
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Class wrapping systemd-localed daemon functionality. By using safe_dbus
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module it tries to prevent failures related to threads and main loops.
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"""
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def __init__(self):
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try:
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self._connection = safe_dbus.get_new_system_connection()
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except GLib.GError as e:
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if can_touch_runtime_system("raise GLib.GError", touch_live=True):
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raise
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log.error("Failed to get safe_dbus connection: %s", e)
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self._connection = None
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@property
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def keymap(self):
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try:
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keymap = safe_dbus.get_property_sync(LOCALED_SERVICE,
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LOCALED_OBJECT_PATH,
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LOCALED_IFACE,
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"VConsoleKeymap",
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self._connection)
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except (safe_dbus.DBusPropertyError, safe_dbus.DBusCallError):
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# no value for the property
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log.error("Failed to get the value for the systemd-localed's "
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"VConsoleKeymap property")
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return ""
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# returned GVariant is unpacked to a tuple with a single element
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return keymap[0]
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@property
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def layouts_variants(self):
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try:
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layouts = safe_dbus.get_property_sync(LOCALED_SERVICE,
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LOCALED_OBJECT_PATH,
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LOCALED_IFACE,
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"X11Layout",
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self._connection)
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except (safe_dbus.DBusPropertyError, safe_dbus.DBusCallError):
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# no value for the property
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log.error("Failed to get the value for the systemd-localed's "
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"X11Layout property")
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return [""]
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try:
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variants = safe_dbus.get_property_sync(LOCALED_SERVICE,
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LOCALED_OBJECT_PATH,
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LOCALED_IFACE,
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"X11Variant",
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self._connection)
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except (safe_dbus.DBusPropertyError, safe_dbus.DBusCallError):
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# no value for the property
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log.error("Failed to get the value for the systemd-localed's "
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"X11Variant property")
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variants = []
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# returned GVariants are unpacked to tuples with single elements
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# containing comma-separated values
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layouts = layouts[0].split(",")
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if variants:
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variants = variants[0].split(",")
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# if there are more layouts than variants, empty strings should be appended
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diff = len(layouts) - len(variants)
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variants.extend(diff * [""])
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return [join_layout_variant(layout, variant) for layout, variant in zip(layouts, variants)]
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@property
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def options(self):
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try:
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options = safe_dbus.get_property_sync(LOCALED_SERVICE,
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LOCALED_OBJECT_PATH,
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LOCALED_IFACE,
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"X11Options",
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self._connection)
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except (safe_dbus.DBusPropertyError, safe_dbus.DBusCallError):
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# no value for the property
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log.error("Failed to get the value for the systemd-localed's "
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"X11Options property")
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return ""
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# returned GVariant is unpacked to a tuple with a single element
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return options[0]
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def set_keymap(self, keymap, convert=False):
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"""
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Method that sets VConsole keymap via systemd-localed's DBus API.
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:param keymap: VConsole keymap that should be set
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:type keymap: str
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:param convert: whether the keymap should be converted to a X11 layout
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(see set_and_convert_keymap)
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:type convert: bool
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"""
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# args: keymap, keymap_toggle, convert, user_interaction
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# where convert indicates whether the keymap should be converted
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# to X11 layout and user_interaction indicates whether PolicyKit
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# should ask for credentials or not
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args = GLib.Variant('(ssbb)', (keymap, "", convert, False))
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try:
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safe_dbus.call_sync(LOCALED_SERVICE, LOCALED_OBJECT_PATH, LOCALED_IFACE,
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"SetVConsoleKeyboard", args, self._connection)
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except safe_dbus.DBusCallError as e:
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log.error("Failed to set keymap: %s", e)
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def convert_keymap(self, keymap):
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"""
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Method that returns X11 layouts and variants that (systemd-localed
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thinks) match given keymap best.
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:param keymap: VConsole keymap
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:type keymap: str
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:return: X11 layouts and variants that (systemd-localed thinks) match
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given keymap best
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:rtype: str
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"""
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# hack around systemd's lack of functionality -- no function to just
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# convert without changing keyboard configuration
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orig_keymap = self.keymap
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ret = self.set_and_convert_keymap(keymap)
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self.set_keymap(orig_keymap)
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return ret
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def set_and_convert_keymap(self, keymap):
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"""
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Method that sets VConsole keymap and returns X11 layouts and
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variants that (systemd-localed thinks) match given keymap best.
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:return: string containing comma-separated "layout (variant)" or
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"layout" layout specifications
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:rtype: string
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"""
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self.set_keymap(keymap, convert=True)
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return ",".join(self.layouts_variants)
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def set_layouts(self, layouts_variants, options=None, convert=False):
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"""
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Method that sets X11 layouts and variants (for later X sessions) via
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systemd-localed's DBus API.
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:param layout_variant: list of 'layout (variant)' or 'layout'
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specifications of layouts and variants
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:type layout_variant: list of strings
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:param options: list of X11 options that should be set
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:type options: list of strings
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:param convert: whether the keymap should be converted to a X11 layout
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(see set_and_convert_keymap)
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:type convert: bool
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"""
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layouts = []
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variants = []
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for layout_variant in (nonempty for nonempty in layouts_variants
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if nonempty):
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(layout, variant) = parse_layout_variant(layout_variant)
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layouts.append(layout)
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variants.append(variant)
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layouts_str = ",".join(layouts)
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variants_str = ",".join(variants)
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if options:
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opts_str = ",".join(options)
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else:
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opts_str = ""
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# args: layout, model, variant, options, convert, user_interaction
|
|
# where convert indicates whether the keymap should be converted
|
|
# to X11 layout and user_interaction indicates whether PolicyKit
|
|
# should ask for credentials or not
|
|
args = GLib.Variant("(ssssbb)", (layouts_str, "", variants_str, opts_str,
|
|
convert, False))
|
|
try:
|
|
safe_dbus.call_sync(LOCALED_SERVICE, LOCALED_OBJECT_PATH, LOCALED_IFACE,
|
|
"SetX11Keyboard", args, self._connection)
|
|
except safe_dbus.DBusCallError as e:
|
|
log.error("Failed to set layouts: %s", e)
|
|
|
|
def set_and_convert_layout(self, layout_variant):
|
|
"""
|
|
Method that sets X11 layout and variant (for later X sessions)
|
|
and returns VConsole keymap that (systemd-localed thinks) matches
|
|
given layout and variant best.
|
|
|
|
:return: a keymap matching layout and variant best
|
|
:rtype: string
|
|
|
|
"""
|
|
|
|
self.set_layouts([layout_variant], convert=True)
|
|
|
|
return self.keymap
|
|
|
|
def convert_layout(self, layout_variant):
|
|
"""
|
|
Method that returns VConsole keymap that (systemd-localed thinks)
|
|
matches given layout and variant best.
|
|
|
|
:param layout_variant: 'layout (variant)' or 'layout' specification
|
|
:type layout_variant: str
|
|
:return: a keymap matching layout and variant best
|
|
:rtype: string
|
|
|
|
"""
|
|
|
|
# hack around systemd's lack of functionality -- no function to just
|
|
# convert without changing keyboard configuration
|
|
orig_layouts_variants = self.layouts_variants
|
|
ret = self.set_and_convert_layout(layout_variant)
|
|
self.set_layouts(orig_layouts_variants)
|
|
|
|
return ret
|
|
|