#!/bin/ksh
#####################################################################
###  File:              0030.dttmpdir
###
###  Default Location:  /usr/dt/config/Xsession.d/
###
###  Purpose:           Create the temporary directory on a per-user,
###                     per-session basis, keying on the $DTUSERSESSION
###                     value, which can also be set by the dtsearchpath
###                     utility.
###
###  Description:
###                     This script is invoked by means of the Xsession file
###                     at user login.  It creates a temporary directory
###                     for files on behalf of the user.
###
###  Invoked by:        /usr/dt/bin/Xsession
###
###  Product:           @(#)Common Desktop Environment 1.0
###
###  Note:              Creates the /var/dt directory if one doesn't exist.
###                     However, root privilege may be required.  If /var/dt
###                     disappears, then logging in as root should restore it.
###
###  Revision:          $Revision: 1.8 $
###
###  (c) Copyright 1993, 1994 Hewlett-Packard Company
###  (c) Copyright 1993, 1994 International Business Machines Corp.
###  (c) Copyright 1993, 1994 Sun Microsystems, Inc.
###  (c) Copyright 1993, 1994 Unix System Labs, Inc., a subsidiary of
###      Novell, Inc.
#####################################################################

if (( ${#DTUSERSESSION} == 0 ))
then
    #
    #  Set the DTAPPMANDIR directory component, which will control
    #  the location of the user's Application Manager directory,
    #  as well as the location of his or her temporary directory.
    #
      DTAPPDIR_HOST_COMPONENT=${DISPLAY%:*}
      DTAPPDIR_DISP_COMPONENT=${DISPLAY#*:}

      if [[ ${DTAPPDIR_HOST_COMPONENT} = "" ]]
      then
           DTAPPDIR_HOST_COMPONENT=`uname -n`
      fi

    #
    #  If the screen number is "0" (e.g., "host:3.0"), then
    #  strip off the screen number.
    #
      if [[ ${DTAPPDIR_DISP_COMPONENT#*.} = "0" ]]
      then
          DTAPPDIR_DISP_COMPONENT=${DTAPPDIR_DISP_COMPONENT%.0}
      fi

      DTUSERSESSION=${LOGNAME}-${DTAPPDIR_HOST_COMPONENT}-${DTAPPDIR_DISP_COMPONENT}
      export DTUSERSESSION
fi

#
#      Create the /var/dt subdirectory, if one doesn't exist
#
if [[ ! -d /var/dt ]]
then
        #
        #  This step requires root privilege
        #
        mkdir -p /var/dt >/dev/null 2>/dev/null
        chmod 755 /var/dt >/dev/null 2>/dev/null
        chgrp bin /var/dt >/dev/null 2>/dev/null
        chown bin /var/dt >/dev/null 2>/dev/null
fi

if [ ! -d /var/dt/tmp ]
then
        mkdir -p /var/dt/tmp >/dev/null 2>/dev/null
        chmod 1777 /var/dt/tmp >/dev/null 2>/dev/null
        chgrp bin /var/dt/tmp >/dev/null 2>/dev/null
        chown bin /var/dt/tmp >/dev/null 2>/dev/null
fi


if [[ -n $DTUSERSESSION ]]
then
    if [ -d /var/dt/tmp ]
    then
        rm -fr /var/dt/tmp/$DTUSERSESSION  >/dev/null 2>/dev/null
        mkdir -p /var/dt/tmp/$DTUSERSESSION >/dev/null 2>/dev/null
    fi

    if [ ! -d /var/dt/tmp/$DTUSERSESSION ]
    then
        print ""
        print `date`
        integer varlen
        varlen=${#DTUSERSESSION}
        if [ $varlen -gt 256 ]
        then
           print "$0:  Unable to create directories in /var/dt/tmp directory."
           print "The value for DTUSERSESSION is too long to use as the name of a directory."
        else
           print "$0:  Unable to access the /var/dt/tmp directory."
           print "You may need to log in as root to restore /var/dt/tmp."
        fi 
        print ""
    fi
else
        print "Unable to make the temporary directory for the user."
fi