gnats 4.1.0-5 / postinst

#!/bin/sh
#
# Gnats installation script -- written by Brian White <bcwhite@pobox.com>
# (This was my very first attempt at learning perl... please forgive me!)
#
# Forgiving -- rewritten to bash :-) by Milan Zamazal <pdm@debian.org>.
# ...and streamlined with SED by Chad Walstrom <chewie@debian.org>

set -e

###############################################################################
#
# Utility functions
#

# Call arguments and never return error
protect () { "$@" || true; }

###############################################################################
#
# Common initialization for install scripts
#

. /usr/share/debconf/confmodule

protect db_get gnats/site
SITE=${RET:-default}
GNATSSITE="/var/lib/gnats/gnats-db/$SITE"
GNATSDBDIR="/var/lib/gnats/gnats-db"
PASSWDFILE="/etc/passwd"

###############################################################################
#
# Check the 'gnats' userid in the password file
#

if [ "$1" = configure ]; then

  if [ $(protect grep -c "^gnats:" /etc/group) -eq 0 ]; then
    adduser --group --gid 41 gnats
  fi
  
  PWFOUND=$(protect grep -c "^gnats:" /etc/passwd)

  if [ $PWFOUND -gt 1 ]; then
    db_subst gnats/user_multiple PASSWDFILE "/etc/passwd"
    db_input high gnats/user_multiple || true
    db_go
  fi

  if [ $PWFOUND -gt 0 ]; then
    if [ $(protect grep -c "^gnats:.*:/usr/lib/gnats/gnats-db:" /etc/passwd) -gt 0 ]
    then
      if [ -e /usr/lib/gnats/gnats-db/.profile ]; then
  mv /usr/lib/gnats/gnats-db/.profile /var/lib/gnats/
      fi
      usermod -d /var/lib/gnats gnats
    fi
    if [ $(protect grep -c "^gnats:[^:]*:41:41:" \
           /etc/passwd) \
   -eq 0 ]
    then
      usermod -u 41 -G 41 gnats
    fi
  else
    adduser --quiet --system --home /var/lib/gnats --no-create-home \
            --gid 41 --shell /bin/sh --disabled-login \
      --gecos 'GNU GNATS Bug-Reporting System' gnats
  fi

fi

###############################################################################
#
# Add the 'gnats' system into the mail aliases
#

if [ "$1" = configure ]; then
  
  #
  # Special mailers
  #

  EXIM=$(dpkg -l exim | protect grep -c '^.i')
  for F in /etc/exim/exim.conf /etc/exim.conf; do
    if [ -f $F ]; then
      EXIMCONF=$F
      break
    fi
  done

  if [ $EXIM -gt 0 ] && [ -n "$EXIMCONF" ]; then
    if [ $(grep -c '^[ \t]*user[ \t]*=' $EXIMCONF) -eq 0 ]; then
      LINES="$(grep '^[ \t]*#[ \t]*user[ \t]*=' $EXIMCONF)"
      if [ -n "$LINES" ]; then
        db_subst gnats/exim_user_uncomment LINES "$LINES"
  db_subst gnats/exim_user_uncomment EXIMCONF "$EXIMCONF"
  db_input high gnats/exim_user_uncomment || true
  db_go
      else
  db_subst gnats/exim_user_uncomment EXIMCONF "$EXIMCONF"
  db_input high gnats/exim_user_add || true
  db_go 
      fi
    fi
  fi

  QMAIL=$(dpkg -l qmail | protect grep -c '^.i')

  if [ $QMAIL -gt 0 ]; then

    # Generate dot files
#    echo "qmail found, installing qmail dot files..."
    for I in "qmail root" \
             "qmail-bugs | /usr/lib/gnats/queue-pr -q" \
             "qmail-query | /usr/lib/gnats/mail-query"; do
      KEY=${I%% *}
      FILE="/var/lib/gnats/.$KEY"
      if [ ! -f $FILE ]; then
  TEMPFILE=$(tempfile)
  echo "${I#$KEY }" >$TEMPFILE
  chmod 0644 $TEMPFILE
  chown gnats:gnats $TEMPFILE
  mv $TEMPFILE $FILE
      fi      
    done
#    echo "Done."

    # Generate aliases
    ASSIGN='/var/qmail/users/assign'
    if [ ! -f $ASSIGN ] || \
       [ $(protect grep -c '^.gnats-admin' $ASSIGN) -eq 0 ]; then
      db_subst gnats/qmail SITE "${SITE}"
      db_input high gnats/qmail || true
      db_go
    fi

  elif [ ! -f /etc/aliases ]; then

    db_subst gnats/unknown_mailer SITE "${SITE}"
    db_input high gnats/unknown_mailer || true
    db_go

  else
  
    #
    # Common mailers
    #

    if [ $(protect \
           egrep -c "^[ \t]*(gnats-admin|bugs|query-pr|$SITE-gnats)\>" \
     /etc/aliases) -lt 4 ]; then

      TEMPFILE=$(tempfile)
      sed "s/^#\([ \t]*\(gnats-admin\|bugs\|query-pr\|$SITE-gnats\)\>.*$\)/\1/" \
        /etc/aliases >$TEMPFILE
      
      if [ $(protect \
             egrep -c "^[ \t]*(gnats-admin|bugs|query-pr|$SITE-gnats)\>" \
       $TEMPFILE) -lt 4 ]; then
        egrep -v "^[ \t]*(gnats-admin|bugs|query-pr|$SITE-gnats)\>" \
          /etc/aliases >$TEMPFILE
        cat - >>$TEMPFILE <<EOF

# begin gnats aliases
gnats:          root
gnats-admin:    gnats
bugs:           "| /usr/lib/gnats/queue-pr -q"
query-pr:       "| /usr/lib/gnats/mail-query"
$SITE-gnats:    bugs
# end gnats aliases
EOF
      fi

      cp /etc/aliases /etc/aliases.dpkg-old
      chmod 644 $TEMPFILE
      mv $TEMPFILE /etc/aliases
      
      NEWALIASES=$(which newaliases)
      if [ -n "$NEWALIASES" ]; then
        "$NEWALIASES"
      fi      
    fi
    
  fi

fi

###############################################################################
#
# Initialize GNATS configuration files
#

if [ "$1" = configure ]; then
  #
  # Add symlink to the standard database
  #
  if [ ! -e /etc/gnats/db-config/default ]; then
    ln -sf /var/lib/gnats/gnats-db/gnats-adm /etc/gnats/db-config/default
  fi

  #
  # Add symlink for gnatsd.user_access
  #
  if [ ! -e /etc/gnats/gnatsd.user_access ]; then
    ln -sf /var/lib/gnats/gnats-db/gnats-adm/gnatsd.user_access /etc/gnats/gnatsd.user_access
  fi

  #
  # Create new database if necessary
  #
  if [ $(grep -c '^default:' /etc/gnats/databases) -gt 0 ]; then
    if [ -d "/var/lib/gnats/gnats-db/gnats-adm" ]; then
      # gnats-queue was present directly in older versions of the package, so
      # it can be deleted during the upgrade
      QUEUEDIR="/var/lib/gnats/gnats-db/gnats-queue"
      if [ ! -d "$QUEUEDIR" ]; then
        mkdir "$QUEUEDIR"
        chown gnats:gnats "$QUEUEDIR"
      fi
    else
      if [ -d "/var/lib/gnats/gnats-db" ]; then
        mv /var/lib/gnats/gnats-db /var/lib/gnats/gnats-db.old
      fi
      /usr/lib/gnats/mkdb default
      chown -R gnats:gnats /var/lib/gnats/gnats-db
    fi
  fi
fi

###############################################################################
#
# Add an inetd entry for client/server operations
#

if [ "$1" = configure ] ; then
  # If upgrading from 3.x, replace gnats entry with support
  if [ -n "$2" ] && dpkg --compare-versions "$2" lt 3.111-1; then
    update-inetd --remove "^#?gnats.*/gnatsd"
  fi

  # Add support entry
  update-inetd --add "#support    stream  tcp nowait  gnats /usr/sbin/tcpd  /usr/lib/gnats/gnatsd"
fi

###############################################################################
#
# Automatically added debhelper stuff
#