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 send_zephyr ()
  17 {
  18     zwrite \
  19         ${CLASS:+-c "$CLASS"} \
  20         ${INSTANCE:+-i "$INSTANCE"} \
  21         ${REALM:+-r "$REALM"} \
  22         ${SIG:+-s "$SIG"} \
  23         ${OPCODE:+-O "$OPCODE"} \
  24         ${ZAUTH:--d} \
  25         ${RECIPIENTS:+$RECIPIENTS}
  26 }
  27
  28 package ()
  29 {
  30     package=$1
  31     oldver=$2
  32     cmp=$3
  33     newver=$4
  34
  35     if [ "$newver" = '-' ] && [ "$oldver" = '-' ]; then
  36         echo "Purging $package"
  37     elif [ "$newver" = '-' ]; then
  38         echo "Removing $package $oldver"
  39     elif [ "$oldver" = '-' ]; then
  40         echo "Installing $package $newver"
  41     elif [ "$cmp" = '<' ]; then
  42         echo "Upgrading $package $oldver to $newver"
  43     elif [ "$cmp" = '=' ]; then
  44         echo "Reinstalling $package $newver"
  45     elif [ "$cmp" = '>' ]; then
  46         echo "Downgrading $package $oldver to $newver"
  47     else
  48         echo "I'm confused: $*"
  49     fi
  50 }
  51
  52 parse_v1 ()
  53 {
  54     oldpkgs=$(mktemp -t "apt-zephyr-old.XXXXXX") || exit $?
  55     newpkgs=$(mktemp -t "apt-zephyr-new.XXXXXX") || exit $?
  56     xargs -r -d '\n' dpkg-deb -W | sort -o "$newpkgs"
  57     cut -f 1 "$newpkgs" | xargs -r -d '\n' dpkg-query -W | \
  58         sort -o "$oldpkgs"
  59     join -t '   ' -j 1 -e '-' "$oldpkgs" "$newpkgs" | \
  60         while IFS='     ' read -r package oldver newver; do
  61         if dpkg --compare-versions "$oldver" lt "$newver"; then
  62             package "$package" "$oldver" '<' "$newver"
  63         elif dpkg --compare-versions "$oldver" eq "$newver"; then
  64             package "$package" "$oldver" '=' "$newver"
  65         else
  66             package "$package" "$oldver" '>' "$newver"
  67         fi
  68     done
  69     rm -f "$oldpkgs" "$newpkgs"
  70 }
  71
  72 parse_v2 ()
  73 {
  74     while read -r line && [ -n "$line" ]; do :; done
  75     while read -r package oldver cmp newver action; do
  76         case "$action" in
  77             '**CONFIGURE**' | '**REMOVE**')
  78                 package "$package" "$oldver" "$cmp" "$newver"
  79                 ;;
  80             '**ERROR**')
  81                 echo "ERROR on $package $newver"
  82                 ;;
  83         esac
  84     done
  85 }
  86
  87 pre_install_pkgs ()
  88 {
  89     read -r line
  90     case "$line" in
  91         'VERSION 2')
  92             parse_v2 | send_zephyr
  93             ;;
  94         'VERSION *')
  95             echo "$0: unrecognized version: $line" | send_zephyr
  96             ;;
  97         '')
  98             ;;
  99         *)
 100             (echo "$line"; cat) | parse_v1 | send_zephyr
 101             ;;
 102     esac
 103 }
 104
 105 post_invoke ()
 106 {
 107     echo 'Done.' | send_zephyr
 108 }
 109
 110 if [ "$1" = "--pre-install-pkgs" ]; then
 111     pre_install_pkgs
 112 elif [ "$1" = "--post-invoke" ]; then
 113     post_invoke
 114 else
 115     echo "usage: $0 {--pre-install-pkgs | --post-invoke}" >&2
 116     echo "(Hint: you probably need to update /etc/apt/apt.conf.d/90zephyr.)" >&2
 117 fi
 118
 119 exit 0