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159 lines
4.2 KiB
Bash
159 lines
4.2 KiB
Bash
#!/bin/bash
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#
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# CDM: The Console Display Manager
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#
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# Copyright (C) 2009-2011, Daniel J Griffiths <ghost1227@archlinux.us>
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# Thanks to:
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#
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# Andrwe beta-testing and submitting the fix for the all
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# important X incrementation function
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# brisbin33 code cleanup
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# tigrmesh finding a critical issue with the gnome-session handler
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# Profjim several incredibly useful patches
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# lambchops468 consolekit and hibernation patches
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# CasperVector Massive rearchitecturing and code sanisation
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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name=$(basename "$0")
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longname='Console Display Manager'
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ver='0.6'
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trap '' SIGINT SIGTSTP
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source /etc/init.d/functions.sh
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# Exit functions.
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exitnormal() { exit 0; }
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exiterror() { sleep 1; exit 1; }
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# Source cdm configurations.
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if [[ -n "$1" ]]; then
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if [[ -f "$HOME/.cdmrc" ]]
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then
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source "$1"
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else
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eerror "$self: config file \`$1' does not exist."
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exiterror
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fi
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elif [[ -f "$HOME/.cdmrc" ]]; then
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source "$HOME/.cdmrc"
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elif [[ -f /etc/cdmrc ]]; then
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source /etc/cdmrc
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fi
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# Default options.
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dialogrc=${dialogrc:-}
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countfrom=${countfrom:-0}
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binlist=${binlist:-()}
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namelist=${namelist:-()}
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xtty=${xtty:-7}
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locktty=${locktty:-no}
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display=${display:-0}
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consolekit=${consolekit:-yes}
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cktimeout=${cktimeout:-30}
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serverargs=${serverargs:-'-nolisten tcp'}
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# Offer all available sessions in /etc/X11/Sessions,
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# if binlist if not explicitly set in cdmrc.
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if [[ "${#binlist[@]}" == 0 ]]; then
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binlist=($(ls /etc/X11/Sessions))
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flaglist=($(sed 's/[[:digit:]]\+/X/g' <<< ${!flaglist[*]}))
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namelist=(${binlist[@]^})
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fi
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# Generate the main menu.
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menu=()
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for ((count=0; count<${#namelist[@]}; count++)); do
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menu=("${menu[@]}" "$((count+countfrom))" "${namelist[${count}]}")
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done
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# Override dialog display if only one option is available.
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if [[ "$count" == 1 ]]; then
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binindex=0
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else
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# Display selection dialog.
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binindex=$(
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DIALOGRC="$dialogrc" dialog --colors --stdout \
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--backtitle "${longname} v${ver}" \
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--ok-label ' Select ' --cancel-label ' Exit ' \
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--menu 'Select session' 0 0 0 "${menu[@]}"
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)
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if [[ $? != 0 ]]; then
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clear
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exitnormal
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fi
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fi
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# Run $bin according to its flag.
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let binindex-=countfrom
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bin="${binlist[${binindex}]}"
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case ${flaglist[$binindex]} in
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# *C*onsole programs.
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[Cc])
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clear
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# If $bin is a login shell, it might `exec' cdm again, causing an endless
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# loop. To solve this problem, export $CDM_SPAWN when `exec'ing $bin and
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# only let the shell automatically `exec' cdm when $CDM_SPAWN is not set.
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# See also the example shell profile file shipped with this cdm package.
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CDM_SPAWN=$$ exec $bin
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;;
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# *X* programs.
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[Xx])
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clear
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# If X is already running and locktty=yes, activate it,
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# otherwise increment.
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if $(yesno locktty); then
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# Activate existing X session.
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if xdpyinfo -display ":$display.0" &> /dev/null; then
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chvt "$((display+xtty))"
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exitnormal
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fi
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else
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# Get the first empty display.
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display=0
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while [[ "$display" < 7 ]]; do
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if dpyinfo=$(xdpyinfo -display ":$display.0" 2>&1 1>/dev/null) ||
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# Display is in use by another user.
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[[ "$dpyinfo" == 'No protocol specified'* ]]
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then
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let display+=1
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else
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break
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fi
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done
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fi
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serverargs=":${display} $serverargs vt$((xtty+display))"
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$(yesno consolekit) && launchflags="-c -t $cktimeout"
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if ! eval cdm-xlaunch $launchflags -- $bin -- $serverargs; then
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ewarn "$self: \`cdm-xlaunch' exited unsuccessfully."
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exiterror
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fi
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;;
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*)
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eerror "$self: unknown flag: \`${flaglist[$binindex]}'."
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exiterror
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;;
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esac
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