package/xorg/xorg-server/xvfb-run.sh

   1 #!/bin/sh
   2 # --- T2-COPYRIGHT-NOTE-BEGIN ---
   3 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
   4 #
   5 # T2 SDE: package/.../xorg-server/xvfb-run.sh
   6 # Copyright (C) 2005 The T2 SDE Project
   7 # Copyright (C) XXXX - 2005 Debian
   8 #
   9 # More information can be found in the files COPYING and README.
  10 #
  11 # This program is free software; you can redistribute it and/or modify
  12 # it under the terms of the GNU General Public License as published by
  13 # the Free Software Foundation; version 2 of the License. A copy of the
  14 # GNU General Public License can be found in the file COPYING.
  15 # --- T2-COPYRIGHT-NOTE-END ---
  16
  17 # $Id: xvfb-run 2166 2005-01-27 07:54:19Z branden $
  18 # from: http://necrotic.deadbeast.net/xsf/XFree86/trunk/debian/local/xvfb-run
  19
  20 # This script starts an instance of Xvfb, the "fake" X server, runs a command
  21 # with that server available, and kills the X server when done.  The return
  22 # value of the command becomes the return value of this script.
  23 #
  24 # If anyone is using this to build a Debian package, make sure the package
  25 # Build-Depends on xvfb, xbase-clients, and xfonts-base.
  26
  27 set -e
  28
  29 PROGNAME=xvfb-run
  30 SERVERNUM=99
  31 AUTHFILE=
  32 ERRORFILE=/dev/null
  33 STARTWAIT=3
  34 XVFBARGS="-screen 0 640x480x8"
  35 LISTENTCP="-nolisten tcp"
  36 XAUTHPROTO=.
  37
  38 # Query the terminal to establish a default number of columns to use for
  39 # displaying messages to the user.  This is used only as a fallback in the event
  40 # the COLUMNS variable is not set.  ($COLUMNS can react to SIGWINCH while the
  41 # script is running, and this cannot, only being calculated once.)
  42 DEFCOLUMNS=$(stty size 2>/dev/null | awk '{print $2}') || true
  43 if ! expr "$DEFCOLUMNS" : "[[:digit:]]\+$" >/dev/null 2>&1; then
  44     DEFCOLUMNS=80
  45 fi
  46
  47 # Display a message, wrapping lines at the terminal width.
  48 message () {
  49     echo "$PROGNAME: $*" | fmt -t -w ${COLUMNS:-$DEFCOLUMNS}
  50 }
  51
  52 # Display an error message.
  53 error () {
  54     message "error: $*" >&2
  55 }
  56
  57 # Display a usage message.
  58 usage () {
  59     if [ -n "$*" ]; then
  60         message "usage error: $*"
  61     fi
  62     cat <<EOF
  63 Usage: $PROGNAME [OPTION ...] COMMAND
  64 Run COMMAND (usually an X client) in a virtual X server environment.
  65 Options:
  66 -a        --auto-servernum          try to get a free server number, starting at
  67                                     --server-num
  68 -e FILE   --error-file=FILE         file used to store xauth errors and Xvfb
  69                                     output (default: $ERRORFILE)
  70 -f FILE   --auth-file=FILE          file used to store auth cookie
  71                                     (default: ./.Xauthority)
  72 -h        --help                    display this usage message and exit
  73 -n NUM    --server-num=NUM          server number to use (default: $SERVERNUM)
  74 -l        --listen-tcp              enable TCP port listening in the X server
  75 -p PROTO  --xauth-protocol=PROTO    X authority protocol name to use
  76                                     (default: xauth command's default)
  77 -s ARGS   --server-args=ARGS        arguments (other than server number and
  78                                     "-nolisten tcp") to pass to the Xvfb server
  79                                     (default: "$XVFBARGS")
  80 -w DELAY  --wait=DELAY              delay in seconds to wait for Xvfb to start
  81                                     before running COMMAND (default: $STARTWAIT)
  82 EOF
  83 }
  84
  85 # Find a free server number by looking at .X*-lock files in /tmp.
  86 find_free_servernum() {
  87     # Sadly, the "local" keyword is not POSIX.  Leave the next line commented in
  88     # the hope Debian Policy eventually changes to allow it in /bin/sh scripts
  89     # anyway.
  90     #local i
  91
  92     i=$SERVERNUM
  93     while [ -f /tmp/.X$i-lock ]; do
  94         i=$(($i + 1))
  95     done
  96     echo $i
  97 }
  98
  99 # Parse the command line.
 100 ARGS=$(getopt --options +ae:f:hn:lp:s:w: \
 101        --long auto-servernum,error-file:auth-file:,help,server-num:,listen-tcp,xauth-protocol:,server-args:,wait: \
 102        --name "$PROGNAME" -- "$@")
 103 GETOPT_STATUS=$?
 104
 105 if [ $GETOPT_STATUS -ne 0 ]; then
 106     error "internal error; getopt exited with status $GETOPT_STATUS"
 107     exit 6
 108 fi
 109
 110 eval set -- "$ARGS"
 111
 112 while :; do
 113     case "$1" in
 114         -a|--auto-servernum) SERVERNUM=$(find_free_servernum) ;;
 115         -e|--error-file) ERRORFILE="$2"; shift ;;
 116         -f|--auth-file) AUTHFILE="$2"; shift ;;
 117         -h|--help) SHOWHELP="yes" ;;
 118         -n|--server-num) SERVERNUM="$2"; shift ;;
 119         -l|--listen-tcp) LISTENTCP="" ;;
 120         -p|--xauth-protocol) XAUTHPROTO="$2"; shift ;;
 121         -s|--server-args) XVFBARGS="$2"; shift ;;
 122         -w|--wait) STARTWAIT="$2"; shift ;;
 123         --) shift; break ;;
 124         *) error "internal error; getopt permitted \"$1\" unexpectedly"
 125            exit 6
 126            ;;
 127     esac
 128     shift
 129 done
 130
 131 if [ "$SHOWHELP" ]; then
 132     usage
 133     exit 0
 134 fi
 135
 136 if [ -z "$*" ]; then
 137     usage "need a command to run" >&2
 138     exit 2
 139 fi
 140
 141 if ! which xauth >/dev/null; then
 142     error "xauth command not found"
 143     exit 3
 144 fi
 145
 146 # If the user did not specify an X authorization file to use, set up a temporary
 147 # directory to house one.
 148 if [ -z "$AUTHFILE" ]; then
 149     XVFB_RUN_TMPDIR="${TMPDIR:-/tmp}/$PROGNAME.$$"
 150     if ! mkdir -p -m 700 "$XVFB_RUN_TMPDIR"; then
 151         error "temporary directory $XVFB_RUN_TMPDIR already exists"
 152         exit 4
 153     fi
 154     AUTHFILE=$(mktemp -p "$XVFB_RUN_TMPDIR" Xauthority)
 155 fi
 156
 157 # Start Xvfb.
 158 MCOOKIE=$(mcookie)
 159 XAUTHORITY=$AUTHFILE xauth add ":$SERVERNUM" "$XAUTHPROTO" "$MCOOKIE" \
 160   >"$ERRORFILE" 2>&1
 161 XAUTHORITY=$AUTHFILE Xvfb ":$SERVERNUM" $XVFBARGS $LISTENTCP >"$ERRORFILE" \
 162   2>&1 &
 163 XVFBPID=$!
 164 sleep "$STARTWAIT"
 165
 166 # Start the command and save its exit status.
 167 set +e
 168 DISPLAY=:$SERVERNUM XAUTHORITY=$AUTHFILE "$@" 2>&1
 169 RETVAL=$?
 170 set -e
 171
 172 # Kill Xvfb now that the command has exited.
 173 kill $XVFBPID
 174
 175 # Clean up.
 176 XAUTHORITY=$AUTHFILE xauth remove ":$SERVERNUM" >"$ERRORFILE" 2>&1
 177 if [ -n "$XVFB_RUN_TMPDIR" ]; then
 178     if ! rm -r "$XVFB_RUN_TMPDIR"; then
 179         error "problem while cleaning up temporary directory"
 180         exit 5
 181     fi
 182 fi
 183
 184 # Return the executed command's exit status.
 185 exit $RETVAL
 186
 187 # vim:set ai et sts=4 sw=4 tw=80: