apt-zephyr/apt-zephyr

   1 #!/bin/sh
   2 set -e
   3
   4 # Defaults
   5 CLASS=
   6 INSTANCE=
   7 REALM=
   8 RECIPIENTS=
   9 SIG="$(hostname -f)"
  10 OPCODE=auto
  11 ZAUTH=
  12
  13 # Read configuration
  14 . /etc/apt-zephyr.conf
  15
  16 package ()
  17 {
  18     package=$1
  19     oldver=$2
  20     cmp=$3
  21     newver=$4
  22
  23     if [ "$newver" = '-' ] && [ "$oldver" = '-' ]; then
  24         echo "Purging $package"
  25     elif [ "$newver" = '-' ]; then
  26         echo "Removing $package $oldver"
  27     elif [ "$oldver" = '-' ]; then
  28         echo "Installing $package $newver"
  29     elif [ "$cmp" = '<' ]; then
  30         echo "Upgrading $package $oldver to $newver"
  31     elif [ "$cmp" = '=' ]; then
  32         echo "Reinstalling $package $newver"
  33     elif [ "$cmp" = '>' ]; then
  34         echo "Downgrading $package $oldver to $newver"
  35     else
  36         echo "I'm confused: $*"
  37     fi
  38 }
  39
  40 read -r line
  41 case "$line" in
  42     'VERSION 2')
  43         while read -r line && [ -n "$line" ]; do :; done
  44         while read -r package oldver cmp newver action; do
  45             case "$action" in
  46                 '**CONFIGURE**' | '**REMOVE**')
  47                     package "$package" "$oldver" "$cmp" "$newver"
  48                     ;;
  49                 '**ERROR**')
  50                     echo "ERROR on $package $newver"
  51                     ;;
  52             esac
  53         done
  54         ;;
  55     'VERSION *')
  56         echo "$0: unrecognized version: $line"
  57         ;;
  58     '')
  59         ;;
  60     *)
  61         oldpkgs=$(mktemp -t "apt-zephyr-old.XXXXXX") || exit $?
  62         newpkgs=$(mktemp -t "apt-zephyr-new.XXXXXX") || exit $?
  63         (echo "$line"; cat) | xargs -r -d '\n' dpkg-deb -W | sort -o "$newpkgs"
  64         cut -f 1 "$newpkgs" | xargs -r -d '\n' dpkg-query -W | \
  65             sort -o "$oldpkgs"
  66         join -t '       ' -j 1 -e '-' "$oldpkgs" "$newpkgs" | \
  67             while IFS=' ' read -r package oldver newver; do
  68             if dpkg --compare-versions "$oldver" lt "$newver"; then
  69                 package "$package" "$oldver" '<' "$newver"
  70             elif dpkg --compare-versions "$oldver" eq "$newver"; then
  71                 package "$package" "$oldver" '=' "$newver"
  72             else
  73                 package "$package" "$oldver" '>' "$newver"
  74             fi
  75         done
  76         rm -f "$oldpkgs" "$newpkgs"
  77         ;;
  78 esac | \
  79     zwrite ${CLASS:+-c "$CLASS"} ${INSTANCE:+-i "$INSTANCE"} ${REALM:+-r "$REALM"} ${SIG:+-s "$SIG"} ${OPCODE:+-O "$OPCODE"} ${ZAUTH:--d} ${RECIPIENTS:+$RECIPIENTS}