svtools 0.6-2 / usr / sbin / svsetup

#!/bin/sh
#
# svsetup
# Service setup tool for daemontools
# Klaus Reimer <k@ailis.de>

TITLE=svsetup
VERSION=0.6
AUTHOR="Klaus Reimer"
EMAIL=k@ailis.de
COPYRIGHT="Copyright (C) 2000-2011 by $AUTHOR"
SVCUSER=root
DELSVCUSER=0
LOGUSER=root
DELLOGUSER=0
DONTLOG=0

showHelp() {
  echo "Usage: $TITLE [OPTION]... CMD SERVICE"
  echo "Service setup tool for daemontools"
  echo ""
  echo "  -u USER        Specify service user name (Default: $SVCUSER)"
  echo "  -l USER        Specify log user name (Default: $LOGUSER)"
  echo "  -n             Do not setup logging with multilog"
  echo "  -e ETCDIR      Specify cfg directory (Default: /etc/sv/SERVICE)"
  echo "  -L LOGDIR      Specify log directory (Default: /var/log/sv/SERVICE)"
  echo "  -s SERVICEDIR  Specify service directory (Default: automatically"
  echo "                   detected)"
  echo "  -d             Delete service user on removal"
  echo "  -D             Delete log user on removal"
  echo "  -h, --help     Display help and exit"
  echo "  -V, --version  Display version and exit"
  echo ""
  echo "  CMD      Specifies action to perform:"
  echo "             CREATE   Create new service"
  echo "             REMOVE   Delete existing service"
  echo "             ENABLE   Enable service"
  echo "             DISABLE  Disable service"
  echo ""
  echo "  SERVICE  Specifies the service name"
  echo ""
  echo "NOTE: If you REMOVE a service and specify a service user (with -u)"
  echo "and/or a log user (with -l) these users (except root) are removed, too,"
  echo "if you also specify the option -d and/or -D! This happens without any"
  echo "confirmation requests and the users are deleted even if they were not"
  echo "created by svsetup!"
  echo ""
  echo "If you create a new service a default run script is created. If"
  echo "there is already a run script in ETCDIR this existing runscript is used"
  echo "instead."
  echo ""
  echo "Report bugs to $AUTHOR <$EMAIL>"
}

showVersion() {
  echo "$TITLE $VERSION"
  echo ""
  echo "$COPYRIGHT"
  echo "This is free software; you can redistribute it and/or modify it under"
  echo "the terms of the GNU General Public License as published by the Free"
  echo "Software Foundation; either version 2 of the License, or (at your"
  echo "option) any later version."
}

while getopts ":hVu:l:e:L:s:n-:dD" NAME
do
  case "$NAME" in
    d)
      DELSVCUSER=1
      ;;
    D)
      DELLOGUSER=1      
      ;;
    u)
      SVCUSER=$OPTARG
      ;;
    l)
      LOGUSER=$OPTARG
      ;;
    n)
      DONTLOG=1
      ;;
    e)
      ETCDIR=$OPTARG
      ;;
    L)
      LOGDIR=$OPTARG
      ;;
    h)
      showHelp
      exit 0
      ;;
    V)
      showVersion
      exit 0
      ;;
    -)
      case "$OPTARG" in
        help)
          showHelp
          exit 0
          ;;
        version)
          showVersion
          exit 0
          ;;
        *)
          echo "Unknown option: $OPTARG"
          showHelp
          exit 1
      esac  
      ;;
    *)
      echo "Unknown option: $OPTARG"
      showHelp
      exit 1
  esac
done

shift `expr $OPTIND - 1`
if [ $# -ne 2 ]
then
  showHelp
  exit 1
fi

ACTION=$1
SERVICE=$2
if [ "$ETCDIR" = "" ]; then ETCDIR="/etc/sv/$SERVICE"; fi
if [ "$LOGDIR" = "" ]; then LOGDIR="/var/log/sv/$SERVICE"; fi
if [ "$SVDIR" = "" ]
then
  if ! SVDIR=`svdir 2>&1`
  then
    echo "$TITLE: $SVDIR" >&2
    exit 1
  fi
fi

case "$ACTION" in
  CREATE|create)
    if ! grep -q "^$SVCUSER:" /etc/passwd
    then
      adduser --quiet --system --no-create-home --disabled-password --home $ETCDIR --gecos "Daemontools service" $SVCUSER
    fi
    if [ $DONTLOG -eq 0 ] && ! grep -q "^$LOGUSER:" /etc/passwd
    then
      adduser --quiet --system --no-create-home --disabled-password --home $LOGDIR --gecos "Daemontools service logging" $LOGUSER
    fi
    if [ ! -d $ETCDIR ]
    then 
      install -d -o root -g root -m 0755 $ETCDIR
    fi
    if [ ! -f $ETCDIR/run ]
    then
      echo "#!/bin/sh" > $ETCDIR/run
      echo "exec 2>&1" >> $ETCDIR/run
      echo "exec setuidgid $SVCUSER $SERVICE" >> $ETCDIR/run
    fi
    chmod +x $ETCDIR/run
    if [ $DONTLOG -eq 0 ]
    then
      install -d -o $LOGUSER -g root -m 0750 $LOGDIR
      install -d -o root -g root -m 0755 $ETCDIR/log
      if [ ! -e $ETCDIR/log/main ]
      then
        ln -sf $LOGDIR $ETCDIR/log/main
      fi
      echo "#!/bin/sh" > $ETCDIR/log/run
      echo "exec setuidgid $LOGUSER multilog t ./main" >> $ETCDIR/log/run
      chmod +x $ETCDIR/log/run
      chmod +t $ETCDIR
    fi
    ;;
  REMOVE|remove)
    rm -f $SVDIR/$SERVICE
    svc -dx $ETCDIR/log 2>/dev/null
    svc -dx $ETCDIR 2>/dev/null
    rm -rf $ETCDIR/log $ETCDIR/supervise $LOGDIR
    if [ $DELSVCUSER -eq 1 ] && [ "$SVCUSER" != "root" ]; then userdel $SVCUSER 2>/dev/null; fi
    if [ $DELLOGUSER -eq 1 ] && [ "$LOGUSER" != "root" ]; then userdel $LOGUSER 2>/dev/null; fi
    ;;
  ENABLE|enable)
    if [ ! -e $SVDIR/$SERVICE ]
    then
      ln -sf $ETCDIR $SVDIR/$SERVICE
    fi
    ;;
  DISABLE|disable)
    rm -f $SVDIR/$SERVICE
    svc -dx $ETCDIR/log 2>/dev/null
    svc -dx $ETCDIR
    ;;
  *)
    echo "Unknown command: $ACTION"
    showHelp
    exit 1
esac

exit 0