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Add hook for libxmlb2 (used by appstream) 

Caused by appstreamcli refresh-cache in package appstream (the
apt-conf/50appstream file)
Fixed upstream in libxmlb in 0652ec042c
This commit is contained in:
Roland Clobus 2022-01-19 22:30:18 +01:00
parent a599f50e48
commit 5a08cc71a0
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1 changed files with 53 additions and 0 deletions
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53
examples/hooks/reproducible/1005-reproducible-libxmlb2-appstream.hook.chroot Executable file
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#!/bin/sh
set -e
# libxmlb2 creates random GUIDs
# See https://github.com/hughsie/libxmlb/issues/110
# Fixed upstream: https://github.com/hughsie/libxmlb/commit/0652ec042cc0611b9b98e080e64e1025db9b4183
# Not released in Debian yet
#
# Until a sufficiently new version is installed, apply the work-around
# Don't run if libxmlb2 is not installed
if [ ! -e /usr/share/doc/libxmlb2 ];
then
exit 0
fi
# Don't run if AppStream is not installed
if [ ! -e /usr/bin/appstreamcli ];
then
exit 0
fi
# Don't run if the version of libxmlb2 is sufficiently new
if [ $(dpkg --compare-versions $(dpkg-query --show --showformat '${Version}\n' libxmlb2 | head -1) le 0.3.6-2) ];
then
exit 0
fi
# Refresh the compressed XML files
appstreamcli refresh --force > /dev/null
# Set the GUID field for each compressed XML file to zero
for f in $(ls /var/cache/app-info/cache/*.xb);
do
dd if=$f of=tmp.xb count=8 iflag=count_bytes status=none
dd if=/dev/zero of=tmp.xb count=16 iflag=count_bytes status=none oflag=append conv=notrunc
dd if=$f of=tmp.xb skip=24 iflag=skip_bytes status=none oflag=append conv=notrunc
rm $f
mv tmp.xb $f
done
# When apt update is invoked, 50appstream calls 'appstreamcli refresh'
# so add another hook to reset the guid again
#
# Before the chroot is finalised, 'apt update' is invoked again, so the reset guid step needs to be re-applied
cat << EOF > /etc/apt/apt.conf.d/51appstream_reset_guid
# Reset the GUID of the AppStream cache files when APT's cache is updated (i.e. apt update)
APT::Update::Post-Invoke-Success {
"if /usr/bin/test -w /var/cache/app-info -a -e /usr/bin/appstreamcli; then for f in \$(ls /var/cache/app-info/cache/*.xb); do dd if=\$f of=tmp.xb count=8 iflag=count_bytes status=none; dd if=/dev/zero of=tmp.xb count=16 iflag=count_bytes status=none oflag=append conv=notrunc; dd if=\$f of=tmp.xb skip=24 iflag=skip_bytes status=none oflag=append conv=notrunc; rm \$f; mv tmp.xb \$f; done; fi";
};
EOF
echo "P: $(basename $0) Reproducible hook has been applied"