File: setupcon

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console-setup 1.68+squeeze2
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#!/bin/sh

#     setupcon -- setup the font and keyboard on the Linux console
#     Copyright © 1999,2000,2001,2002,2003,2006 Anton Zinoviev

#     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.

#     If you have not received a copy of the GNU General Public License
#     along with this program, write to the Free Software Foundation, Inc.,
#     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

###########################################################################


# The same as /usr/bin/which - in order to make "which" available before
# /usr is mounted
which () {
    local IFS
    IFS=:
    for i in $PATH; do
	if [ -x "$i/$1" ]; then
	    echo "$i/$1"
	    return 0
	fi
    done
    return 1
}

while [ "$1" ]; do
    case "$1" in
	-k|--keyboard-only)
	    keyboard_only=yes
	    ;;
	-f|--font-only)
	    font_only=yes
	    ;;
	-v|--verbose)
	    verbose_option=yes
	    ;;
	--force)
	    force=yes
	    ;;
	--save)
	    save=yes
	    ;;
	--save-only)
	    force=yes
	    save=yes
	    save_only=yes
	    ;;
	-h|--help)
	    cat >&2 <<EOF
Usage: setupcon [OPTION] [VARIANT]
Sets up the font and the keyboard on Linux console.

  -k, --keyboard-only  setup the keyboard only, do not setup the font
  -f, --font-only      setup the font only, do not setup the keyboard
      --force          do not check whether we are on the console
  -v, --verbose        explain what is being doing, try it if s.t. goes wrong
      --save           copy the font and the console map in /etc/console-setup,
                         update /etc/console-setup/cached.kmap.gz
      --save-only      only save; don't setup keyboard/font immediately
                         (implies --force)
  -h, --help           display this help and exit

If VARIANT is not specified setupcon looks for the configuration files
(in this order) ~/.console-setup and if this doesn't exist then the
combination/etc/default/keyboard + /etc/default/console-setup.  When
a VARIANT is specified then setupcon looks for the configuration files
~/.console-setup.VARIANT and /etc/default/console-setup.VARIANT.
EOF
	    exit 0
	    ;;
	-*)
	    echo "setupcon: Unrecognised option $1" >&2
	    exit 1
	    ;;
	*)
	    if [ -z "$VARIANT" ]; then
		VARIANT="$1"
	    else
		echo "setupcon: Two variants specified: $VARIANT and $1" >&2
		exit 1
	    fi
	    ;;
    esac
    shift
done

if [ "$VARIANT" ]; then
    USER_CONFIG=${HOME}/.console-setup."$VARIANT"
    MAIN_CONFIG=/etc/default/keyboard."$VARIANT"
    MAIN_CONFIG2=/etc/default/console-setup."$VARIANT"
else
    USER_CONFIG=${HOME}/.console-setup
    MAIN_CONFIG=/etc/default/keyboard
    MAIN_CONFIG2=/etc/default/console-setup
fi

if [ -f "$USER_CONFIG" ]; then
    CONFIG="$USER_CONFIG"
    CONFIG2=''
    save=
elif [ -f "$MAIN_CONFIG" ]; then
    CONFIG="$MAIN_CONFIG"
    CONFIG2="$MAIN_CONFIG2"
else
    echo "setupcon: None of $MAIN_CONFIG nor $USER_CONFIG exists." >&2
    exit 1
fi

if [ "$CONFIG2" -a -f "$CONFIG2" ]; then
    . "$CONFIG2"
fi
. "$CONFIG"

if [ "$verbose_option" = yes ]; then
    VERBOSE_OUTPUT=yes
fi
if [ "$VERBOSE_OUTPUT" = yes ]; then
    verbose=''
else
    verbose='>/dev/null 2>&1'
fi

if which ckbcomp-mini >/dev/null; then
    CHARMAP=UTF-8
    if [ "$VERBOSE_OUTPUT" = yes -a "$CHARMAP" != UTF-8 ]; then
	echo Only UTF-8 is supported by console-setup-mini
    fi
fi

if [ "$force" != yes ]; then
    case `readlink /proc/self/fd/2` in
	/dev/tty[0-9]*|/dev/vc/[0-9]*|/dev/console)
	    ;;
	*)
	    echo We are not on the Linux console, the console is left unconfigured.
	    exit 0 
	    ;;
    esac
fi

ACTIVE_CONSOLES=${ACTIVE_CONSOLES:-/dev/tty[1-6]}
CHARMAP=${CHARMAP:-UTF-8}
CODESET=${CODESET:-Uni2}
CONSOLE_MAP=${CONSOLE_MAP:-$ACM}

#-----------------------#
#       OUTPUT          #
#-----------------------#

if [ "$keyboard_only" != yes ] && [ "$ACTIVE_CONSOLES" ]; then
    # Setup unicode/non-unicode mode
    if [ "$save_only" != yes ]; then
	for console in $ACTIVE_CONSOLES; do
	    [ -w $console ] || continue
	    if \
		[ "$CHARMAP" = UTF-8 ] || [ -z "$CONSOLE_MAP$CHARMAP" ]
	    then
		printf '\033%%G' >$console
	    else
		printf '\033%%@' >$console
	    fi
	done
    fi
    
    # Load the font
    if [ -z "$FONT" ]; then
	FONT_MAP=''
	if which ckbcomp-mini >/dev/null; then
	    FONT=$(echo `ls /usr/share/consolefonts/$CODESET-*.psf* \
		            /etc/console-setup/$CODESET-*.psf* 2>/dev/null`)
	    FONT=${FONT%% *}
	    if [ "$FONTFACE" ] || [ "$FONTSIZE" ]; then
		eval echo setupcon: Warning: ignoring the FONTFACE and FONTSIZE specifications! $verbose
	    fi
	elif [ "$FONTFACE" ] && [ "$FONTSIZE" ]; then
	    FONT="$CODESET-$FONTFACE$FONTSIZE.psf.gz"
	    case "$FONTSIZE" in
		*x*)
		    bigfont=yes
		    ;;
		*)
		    bigfont=no
		    ;;
	    esac
	fi
    fi
    LOADFONTS=''
    for f in $FONT; do
	if [ -f "$f" ]; then
	    LOADFONTS="$LOADFONTS $f"
	else
	    for dir in \
		/usr/local/share/consolefonts \
		/usr/share/consolefonts \
		/etc/console-setup \
		FONT_IS_MISSING
	    do
		if [ -f "$dir/${f##*/}" ]; then
		    LOADFONTS="$LOADFONTS $dir/${f##*/}"
		    break
		fi
		if [ "$dir" = FONT_IS_MISSING ]; then
		    echo setupcon: Warning: the font ${f##*/} does not exist! >&2
		fi
	    done
	fi
    done
    LOADFONT_MAP=''
    for f in $FONT_MAP; do
	[ -z "$LOADFONT_MAP" ] || break # only one unicode map
	if [ -f "$f" ]; then
	    LOADFONT_MAP="$LOADFONT_MAP $f"
	else
	    for dir in \
		/usr/local/share/consoletrans \
		/usr/share/consoletrans \
		/etc/console-setup \
		FONT_MAP_IS_MISSING
	    do
		if [ -f "$dir/${f##*/}" ]; then
		    LOADFONT_MAP="$LOADFONT_MAP $dir/${f##*/}"
		    break
		fi
		if [ "$dir" = FONT_MAP_IS_MISSING ]; then
		    echo setupcon: Warning: the unicode map ${f##*/} does not exist! >&2
		fi
	    done
	fi
    done
    
    for f in $LOADFONTS; do
	if \
	    [ "$save" = yes ] \
	    && [ "${f%/*}" != /etc/console-setup ]
	then
	    cp "$f" /etc/console-setup/
	fi
    done
    for f in $LOADFONT_MAP; do
	if \
	    [ "$save" = yes ] \
	    && [ "${f%/*}" != /etc/console-setup ]
	then
	    cp "$f" /etc/console-setup/
	fi
    done
    
    # Due to bug in splashy and usplash: do not load fonts (#540314)
    if \
	pidof splashy > /dev/null \
	|| pidof usplash > /dev/null
    then
	LOADFONTS=''
    fi

    if [ "$save_only" != yes ] && [ "$LOADFONTS" ]; then
	for console in $ACTIVE_CONSOLES; do
	    [ -w $console ] || continue
	    if which consolechars >/dev/null; then
		if [ "$bigfont" = yes ]; then
		    echo "setupcon: The consolechars utility from the console-setup font can load only fonts with 8 pixel width matrix.  Please install the setfont utility from the kbd package." >&2
		fi
		if [ "$LOADFONT_MAP" ]; then
		    eval consolechars -v --tty=$console -f $LOADFONTS -u "$LOADFONT_MAP" $verbose
		else
		    eval consolechars -v --tty=$console -f $LOADFONTS $verbose
		fi
	    elif which setfont >/dev/null; then
		if [ "$LOADFONT_MAP" ]; then
		    eval setfont -v -C $console $LOADFONTS -u "$LOADFONT_MAP" $verbose
		else
		    eval setfont -v -C $console $LOADFONTS $verbose
		fi
	    fi
	done
    fi
    
    # Load the ACM
    if [ ! -f "$CONSOLE_MAP" ]; then
	for dir in \
	    /usr/local/share/consoletrans \
	    /usr/share/consoletrans \
	    /etc/console-setup 
	do
	    if [ -f "$dir/$CHARMAP.acm.gz" ]; then
		CONSOLE_MAP="$dir/$CHARMAP.acm.gz"
		break
	    fi
	done
    fi
    if [ -f "$CONSOLE_MAP" ]; then
	if \
	    [ "$save" = yes ] \
	    && [ "${CONSOLE_MAP%/*}" != /etc/console-setup ]
	then
	    cp "$CONSOLE_MAP" /etc/console-setup/
	fi
    else
	CONSOLE_MAP="$CHARMAP.acm.gz"
    fi
    if \
	[ "$save_only" != yes ] && [ "$CHARMAP" != UTF-8 ] && [ "$LOADFONTS" ]
    then
	for console in $ACTIVE_CONSOLES; do
	    [ -w $console ] || continue
	    if which consolechars >/dev/null; then
		eval consolechars -v --tty=$console --acm "$CONSOLE_MAP" $verbose
	    elif which setfont >/dev/null; then
		eval setfont -v -C $console -m "$CONSOLE_MAP" $verbose
	    fi	    
	done
    fi

    STTY=""
    [ -z "$SCREEN_WIDTH"  ] || STTY="$STTY cols $SCREEN_WIDTH"
    [ -z "$SCREEN_HEIGHT" ] || STTY="$STTY rows $SCREEN_HEIGHT"

    if [ -n "$STTY" ]
    then
	for console in $ACTIVE_CONSOLES; do
	    [ -r $console ] || continue
	    stty $STTY < $console
	done
    fi
fi

#-----------------------#
#        INPUT          #
#-----------------------#

if [ "$font_only" != yes -a "$XKBMODEL" != unknown ]; then
    # On Mac PPC machines, we may need to set kernel vars first.  We need
    # to mount /proc to do that, but we need it set up before sulogin may
    # be run in checkroot, which will need the keyboard to log in...
    # This code was borrowed from the keymap.sh script of console-common
    # Copyright © 2001 Yann Dirson
    # Copyright © 2001 Alcove http://www.alcove.fr/
    if [ "$save_only" != yes ] && \
       [ -x /sbin/sysctl ] && [ -r /etc/sysctl.conf ]; then
	if grep -v '^\#' /etc/sysctl.conf | grep -q keycodes ; then
	    grep keycodes /etc/sysctl.conf | grep -v "^#" \
		| while read d ; do
		      /sbin/sysctl -w $d 2> /dev/null || true
	          done
	fi
    fi
    
    if [ "$save_only" != yes ]; then
	for console in $ACTIVE_CONSOLES; do
	    [ -w $console ] || continue
	    if which kbd_mode >/dev/null; then
		if [ "$CHARMAP" = UTF-8 ] || [ -z "$CONSOLE_MAP" ]; then
		    kbd_mode -u <$console
		else
		    kbd_mode -a <$console
		fi
	    fi
	done
    fi
    
    if which loadkeys >/dev/null; then
	if [ "$CHARMAP" != UTF-8 ]; then
	    acm_option="-charmap $CHARMAP"
	else
	    acm_option=''
	fi
	
	if [ "$XKBRULES" ]; then
	    rules_option="-rules $XKBRULES"
	else
	    rules_option=''
	fi
	
	if \
	    [ "$VARIANT" = '' ] \
	    && which gzip >/dev/null \
	    && [ -d /usr/share ] # /usr is mounted
	then
	    if \
		[ ! -f /etc/console-setup/cached.kmap.gz ] \
		|| [ /etc/console-setup/cached.kmap.gz \
		     -ot /etc/default/keyboard ] \
		|| [ "$save" = yes ]
	    then
		ckbcomp $acm_option $rules_option -model "$XKBMODEL" \
		    "$XKBLAYOUT" "$XKBVARIANT" "$XKBOPTIONS" \
		    | gzip -9 2>/dev/null >/etc/console-setup/cached.kmap.gz
		    # avoid warnings when /etc is mounted read-only
	    fi
	fi
	
	if [ "$save_only" != yes ]; then
	    if [ "$KMAP" -a -f "$KMAP" ]; then
		eval loadkeys "$KMAP" $verbose
	    else		    
		if \
		    [ "$VARIANT" = '' ] && [ "$CONFIG" != "$USER_CONFIG" ] \
		    && [ -f /etc/console-setup/cached.kmap.gz ] \
		    && [ ! /etc/console-setup/cached.kmap.gz \
		           -ot /etc/default/keyboard ]
		then
		    eval loadkeys /etc/console-setup/cached.kmap.gz $verbose
		else
		    if [ -d /usr/share/X11/xkb ]; then
			ckbcomp $acm_option $rules_option \
			    -model "$XKBMODEL" \
			    "$XKBLAYOUT" "$XKBVARIANT" "$XKBOPTIONS" \
			    | eval loadkeys $verbose
		    elif [ -f /etc/console-setup/cached.kmap.gz ]; then
			eval loadkeys /etc/console-setup/cached.kmap.gz $verbose
		    fi
		fi
	    fi
	fi
    fi
fi