postinst is in apt-cacher-ng 0.9.1-1ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
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. /usr/share/debconf/confmodule
NAME=apt-cacher-ng
CONFIGFILE=/etc/$NAME/zz_debconf.conf
LDIR=/var/log/$NAME
SLIST=/etc/apt/sources.list
CFG=/etc/apt-cacher-ng
DDIR=/usr/lib/apt-cacher-ng
VDIR=/var/lib/apt-cacher-ng
udefault=$VDIR/backends_ubuntu.default
ddefault=$VDIR/backends_debian.default
BINPATH=/usr/sbin/$NAME
TOOL=$DDIR/acngtool
gen_mirror_list_from_sources_list() {
tmpfile="$1.dpkg-new"
case "$2" in
*gz)
pickcmd=zgrep
;;
*)
pickcmd=grep
;;
esac;
(
grep -h '^deb' $SLIST.d/* $SLIST 2>/dev/null | sed -e "s,ftp:/,http:/," | \
(
while read a b c ; do
case "$b" in http*) $pickcmd "$b" "$2" || true ;; esac
done
) # but don't add duplicates
) | ( while read a ; do grep -q "$a" "$tmpfile" 2>/dev/null || echo "$a" >> "$tmpfile" ; done)
# replace only if it got contents
if test -s "$tmpfile" ; then
cat "$tmpfile" > "$1"
fi
rm -f "$tmpfile"
}
sig='#09f369bf9c82a2210934e82213360226'
def_file_header="# This is a configuration file. All lines starting with # will be ignored.
#
# WARNING: this file is maintained by configuration scripts of the apt-cacher-ng
# package. All manual changes WILL BE LOST after the next package upgrade as
# long as a line looking exactly like $sig
# is found inside. Remove or modify that line to stop auto-updates of this file.
$sig
"
# .default files specify a set of fallback configuration for the cases where
# it's not possible to construct something useful in the regular backends files
set_def_files() {
# if not readable or still has the signature
if ! test -r $ddefault || grep -q "^[[:space:]]*$sig[[:space:]]*$" $ddefault ; then
echo "$def_file_header" > $ddefault
# ftp.debian.org is a geodns mapped location, should be good as-is
echo http://ftp.debian.org/debian/ >> $ddefault
fi
if ! test -r $udefault || grep -q "^[[:space:]]*$sig[[:space:]]*$" $udefault ; then
guess_ubuntu_mirrors
# silent fix of the broken file generated by the first versions of the mirror picking code
if grep -q "^http://archive.ubuntu.com/?$" $udefault ; then
sed "s,http://archive.ubuntu.com,http://archive.ubuntu.com/ubuntu," -i $udefault
fi
fi
}
guess_ubuntu_mirrors() {
tmpfile="`mktemp`"
if [ ! "$http_proxy" ] ; then
prx=$(apt-config dump | grep Acquire::http::Proxy | cut -f2 -d'"') || true
if [ "$prx" ] ; then
http_proxy="$prx"
export http_proxy
fi
fi
# may hit a local mirror which also hosts Debian, use it then
sed -e 's,\([a-z]\)/.*,\1,' < $CFG/backends_debian | xargs -n1 -i grep "{}" $DDIR/ubuntu_mirrors > $tmpfile || true
# mirror suggestions from Ubuntu's service might be a good candidate
if ! test -s $tmpfile ; then
mirurl=http://mirrors.ubuntu.com/mirrors.txt
wget -q -O- $mirurl >> $tmpfile 2>/dev/null || curl -s $mirurl >> $tmpfile 2>/dev/null || $TOOL curl $mirurl $BINPATH >> $tmpfile 2>/dev/null || true
fi
# still nothing. Sneak more information from Debian backend configuration?
if ! test -s $tmpfile ; then # ok, go by Debian TLD
grep debian.org/ /etc/apt-cacher-ng/backends_debian | \
sed -e 's,^http://ftp[2-3]\?\.\([a-z][a-z]\).*,http://\1.archive.ubuntu.com/,' | \
sort -u | xargs -n1 -i grep "{}" $DDIR/ubuntu_mirrors > $tmpfile || true
fi
if ! test -s $tmpfile ; then # ok, then try just any TLD
sed -e 's,^http://\([^\/]\+\).*,\1,;s,.*\.\(.*\),http://\1.archive.ubuntu.com/,' < $CFG/backends_debian | \
sort -u | xargs -n1 -i grep "{}" $DDIR/ubuntu_mirrors > $tmpfile || true
fi
if ! test -s $tmpfile ; then
echo http://archive.ubuntu.com/ubuntu/ > $tmpfile || true
fi
if test -s $tmpfile ; then
echo "$def_file_header" > $udefault
cat $tmpfile >> $udefault
fi
rm -f "$tmpfile" 2>/dev/null
}
gen_lists() {
gen_mirror_list_from_sources_list $CFG/backends_debian $DDIR/deb_mirrors.gz
gen_mirror_list_from_sources_list $CFG/backends_ubuntu $DDIR/ubuntu_mirrors
gen_mirror_list_from_sources_list $CFG/backends_debvol $DDIR/debvol_mirrors.gz
}
if [ "$1" = "configure" ]; then
db_get $NAME/cachedir
case "$RET" in
keep|"")
# but making sure that it's really set to something sensible in the
# config, otherwise replace with the default
if ! TESTPATH=$($TOOL printvar CacheDir -c $CFG 2>/dev/null) ; then
# ok, some IO trouble is bad but in this case just behave like it
# did in the former times with a static /v/c/a-c-n folder setting
CDIR=/var/cache/$NAME
CDIRCONF="# CacheDir not set, having trouble reading config files"
elif test -d "$TESTPATH" ; then
CDIR="$TESTPATH"
CDIRCONF="# CacheDir not set by debconf"
else
CDIR=/var/cache/$NAME
CDIRCONF="CacheDir: $CDIR # default or overridden since '$TESTPATH' directory didn't exist"
fi
;;
*)
# ok, configured by debconf, will be created as needed
CDIR="$RET"
CDIRCONF="CacheDir: $RET"
;;
esac
# user should exist. adduser sometimes fails (system range issue) but that's ok
adduser --quiet --system --group --no-create-home --home "$CDIR" $NAME || id $NAME
# also setup permissions ASAP
if [ -z "$(dpkg-statoverride --list $CFG/security.conf)" ] ; then
dpkg-statoverride --update --add root $NAME 640 $CFG/security.conf
fi
# be sure about that even if the user messed it up
for x in "$CDIR" $LDIR ; do
if [ ! -d "$x" ]; then
install -d -g $NAME -o $NAME -m2755 "$x"
fi
done
# creating some stubs
# least invasive cooperation with the old style behavior for now
for cfn in backends_debvol backends_ubuntu backends_debian ; do
if ! test -e $CFG/$cfn ; then
if test -e $CFG/oldconffiles/$cfn ; then
mv -f $CFG/oldconffiles/$cfn $CFG/$cfn
else
install -m644 /dev/null $CFG/$cfn
fi
fi
done
rm -rf $CFG/oldconffiles
db_get apt-cacher-ng/gentargetmode || true
case "$RET" in
"Create once"|"Set up once")
gen_lists
db_set apt-cacher-ng/gentargetmode "No automated setup"
db_go
;;
"Create now and update later"|"Set up now and update later")
gen_lists
;;
"No automated setup")
;;
esac
db_get $NAME/bindaddress
BINDADDRESS="$RET"
if [ x"$BINDADDRESS" = x"all" ] ; then # just for backwards compatibility
BINDADDRESS='BindAddress: '
elif [ x"$BINDADDRESS" = x"keep" ] ; then
BINDADDRESS='# BindAddress is set by other config file(s)'
else
BINDADDRESS="BindAddress: $BINDADDRESS"
fi
db_get $NAME/port
PORT="$RET"
if [ x"$PORT" = x"keep" ] || [ x"$PORT" = x ] ; then
PORT='# Port is set by other config file(s)'
else
PORT="Port: $PORT"
fi
db_get $NAME/proxy
PROXY="$RET"
if [ x"$PROXY" = x ] ; then
PROXY='Proxy:'
elif [ x"$PROXY" = x"keep" ] ; then
PROXY='# Proxy set by other config files(s)'
else
if echo "$PROXY" |grep -q '@' ; then
# well, there are credentials which is bad. This better goes into a file with restricted permissions.
install -m 640 -o root -g $NAME /dev/null $CFG/zz_debconf_security.conf
cat << HERESEC >$CFG/zz_debconf_security.conf
# This file is created if the proxy contains user/password data
# and is removed otherwise.
Proxy: $PROXY
HERESEC
PROXY=
else
PROXY="Proxy: $PROXY"
rm -rf $CFG/zz_debconf_security.conf
fi
fi
PTENABLE='# PassThroughPattern: setting is not configured by debconf'
db_get $NAME/tunnelenable
if [ x"$RET" = x"true" ] ; then
PTENABLE='PassThroughPattern: .*'
fi
cat << HERE > $CONFIGFILE
# This is a configuration generated file managed by the package configuration
# scripts of apt-cacher-ng. All manual changes here will be overriden.
# To reconfigure particular settings, please run:
# dpkg-reconfigure apt-cacher-ng -plow
# See acng.conf and apt-cacher-ng documentation for more details.
# To override this values permanently, put the assignments into a file
# like /etc/apt-cacher-ng/zzz_override.conf .
$PROXY
$PORT
$BINDADDRESS
$CDIRCONF
$PTENABLE
HERE
db_stop || true
rm -f $CFG/in.acng $CFG/mount.acng
set_def_files
fi
# Automatically added by dh_systemd_enable
# This will only remove masks created by d-s-h on package removal.
deb-systemd-helper unmask apt-cacher-ng.service >/dev/null || true
# was-enabled defaults to true, so new installations run enable.
if deb-systemd-helper --quiet was-enabled apt-cacher-ng.service; then
# Enables the unit on first installation, creates new
# symlinks on upgrades if the unit file has changed.
deb-systemd-helper enable apt-cacher-ng.service >/dev/null || true
else
# Update the statefile to add new symlinks (if any), which need to be
# cleaned up on purge. Also remove old symlinks.
deb-systemd-helper update-state apt-cacher-ng.service >/dev/null || true
fi
# End automatically added section
# Automatically added by dh_installinit
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
# In case this system is running systemd, we need to ensure that all
# necessary tmpfiles (if any) are created before starting.
if [ -d /run/systemd/system ] ; then
systemd-tmpfiles --create /usr/lib/tmpfiles.d/apt-cacher-ng.conf >/dev/null || true
fi
fi
# End automatically added section
# Automatically added by dh_installinit
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
if [ -x "/etc/init.d/apt-cacher-ng" ]; then
update-rc.d apt-cacher-ng defaults 18 >/dev/null
fi
if [ -x "/etc/init.d/apt-cacher-ng" ] || [ -e "/etc/init/apt-cacher-ng.conf" ]; then
invoke-rc.d apt-cacher-ng start || exit $?
fi
fi
# End automatically added section
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