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|
#!/bin/sh
# postrm script for di-netboot-assistant
set -eu
DL_CACHE=/var/cache/di-netboot-assistant/
STATUS_LIB=/var/lib/di-netboot-assistant
TFTP_ROOT=/var/lib/tftpboot
N_A_DIR=d-i/n-a
if [ -e /etc/di-netboot-assistant/di-netboot-assistant.conf ] ; then
. /etc/di-netboot-assistant/di-netboot-assistant.conf
fi
if [ -f $STATUS_LIB/.old-conf-for-purge ]; then
# shellcheck source=/dev/null
. $STATUS_LIB/.old-conf-for-purge
fi
#This function should be kept in sync with function "uninstall_repo" in di-netboot-assistant
uninstall_repo() {
dist_conf="$1" # Repository's .conf file
local s metadatabasename expand_dir dist_dir
metadatabasename="${dist_conf%.conf}"
expand_dir="$(grep -E "^[[:blank:]]*expand_dir=" "$dist_conf" | sed -e 's/^[[:blank:]]*expand_dir=//')"
[ "$expand_dir" != "/" ] && [ -d "$expand_dir" ] && rm -Rf "$expand_dir"
dist_dir=$(dirname "$expand_dir")
rmdir --ignore-fail-on-non-empty "$dist_dir"
s="$metadatabasename.pxelinux.menu.fragment"
[ -f "$s" ] && rm "$s"
s="$metadatabasename.uboot.menu.fragment"
[ -f "$s" ] && rm "$s"
s="$metadatabasename.grub.menu.fragment"
[ -f "$s" ] && rm "$s"
s="$metadatabasename.pxelinux.menu.serial-9600.fragment"
[ -f "$s" ] && rm "$s"
rm "$dist_conf"
}
#This function should be kept in sync with function "url2filename" in di-netboot-assistant
url2filename() {
sed -e 's#//\+#/#g' -e 's#[^[:alnum:]@+_~\.-]#_#g'
}
#This function should be kept in sync with function "remove_repocache" in di-netboot-assistant
remove_repocache() {
local metadatafile="$1" # repository to uncache
local base file
base="${metadatafile%~~*}"
sed -n -e 's/^[[:blank:]]*dl_file=[[:blank:]]*//p' "$metadatafile" | while read -r file ; do
rm "${base}_$(echo "$file" | url2filename)"
done
#Purge remaing files (MD5SUMs...) if there are no more cached
#distribution from the same repository.
if ! echo "${base}~~"*.meta | grep -qv "$metadatafile" ; then
rm "${base}"_*
fi
[ -f "$metadatafile" ] && rm "$metadatafile"
}
case "$1" in
purge)
if [ -d $STATUS_LIB ]; then
for x in "$STATUS_LIB"/*.conf ; do
[ -f "$x" ] || continue
uninstall_repo "$x"
done
if [ -d "$DL_CACHE" ]; then
for metadatafile in "$DL_CACHE"/*~~*--*.meta ; do
remove_repocache "$metadatafile"
done
fi
for lnk in grubx64.efi grub ; do
if [ "$TFTP_ROOT/$lnk" -ef "$TFTP_ROOT/$N_A_DIR/$lnk" ] ; then
rm "$TFTP_ROOT/$lnk" || true
fi
done
for x in pxelinux.0 elilo.conf elilo.efi README.txt boot.ipxe \
pxelinux.cfg/default pxelinux.cfg/default.mig-bak \
pxelinux.cfg/menu.c32 pxelinux.cfg/vesamenu.c32 \
ldlinux.c32 libcom32.c32 libutil.c32 \
bootnetx64.efi grubx64.efi \
; do
f="$TFTP_ROOT/$N_A_DIR/$x"
if [ -f "$f" ] || [ -L "$f" ] ; then
rm "$f" || true
fi
done
# shellcheck disable=SC2015
[ -d "$TFTP_ROOT/$N_A_DIR/grub" ] && rm -r "$TFTP_ROOT/$N_A_DIR/grub" || true
for x in $N_A_DIR/pxelinux.cfg $N_A_DIR ; do
f="$TFTP_ROOT/$x"
# shellcheck disable=SC2015
[ -d "$f" ] && rmdir --ignore-fail-on-non-empty "$f" || true
done
if [ -f $STATUS_LIB/.old-conf-for-purge ]; then
rm $STATUS_LIB/.old-conf-for-purge || true
fi
rmdir --ignore-fail-on-non-empty $STATUS_LIB
fi
;;
remove)
if [ -f /etc/di-netboot-assistant/di-netboot-assistant.conf ]; then
[ ! -d $STATUS_LIB ] && mkdir $STATUS_LIB
sed -e "1s/^/#BACKUP, to purge our TFTP stuff when purged\n/" \
< /etc/di-netboot-assistant/di-netboot-assistant.conf \
> $STATUS_LIB/.old-conf-for-purge
fi
;;
upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
;;
*)
echo "postrm called with unknown argument \`$1'" >&2
exit 1
;;
esac
# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.
#DEBHELPER#
exit 0
|
