#!/bin/sh
set -e

TESTDIR="$(readlink -f "$(dirname "$0")")"
. "$TESTDIR/framework"
setupenvironment
configarchitecture 'amd64'

CURRENTKERNEL="linux-image-$(uname -r)"
insertinstalledpackage "$CURRENTKERNEL" 'amd64' '5-1'
# debug packages do not need our protection
insertinstalledpackage "${CURRENTKERNEL}-dbg" 'amd64' '5-1'
# but other kernel flavours should be protected
insertinstalledpackage "${CURRENTKERNEL}-686-pae" 'i386' '5-1'
insertinstalledpackage "${CURRENTKERNEL}-rt" 'amd64' '5-1'
# some more versions
insertinstalledpackage 'linux-image-1.0.0-2-generic' 'amd64' '1.0.0-2'
insertinstalledpackage 'linux-image-100.0.0-1-generic' 'amd64' '100.0.0-1'
# kernel metapackages should be ignored
insertinstalledpackage 'linux-image-amd64' 'amd64' '200-1'
insertinstalledpackage 'linux-image-686-pae' 'i386' '300-1'
# ensure that the '.' is really a dot and not a wildcard
insertinstalledpackage 'linux-headers-1000000-1-generic' 'amd64' '100.0.0-1'

testsuccess aptmark auto "$CURRENTKERNEL" "${CURRENTKERNEL}-dbg" "${CURRENTKERNEL}-686-pae:i386" "${CURRENTKERNEL}-rt" \
	'linux-image-1.0.0-2-generic' 'linux-image-100.0.0-1-generic' 'linux-headers-1000000-1-generic'
testsuccess aptmark hold "${CURRENTKERNEL}-rt"

testprotected() {
	rm -f rootdir/etc/apt/apt.conf.d/01autoremove-kernels protected.list

	testsuccess runapt sh "${TESTDIR}/../../debian/apt.auto-removal.sh" "$@"
	testfailure test -s rootdir/tmp/testsuccess.output

	msgtest 'Check kernel autoremoval protection list' 'is created'
	testsuccess --nomsg test -e rootdir/etc/apt/apt.conf.d/01autoremove-kernels
	testfilestats 'rootdir/etc/apt/apt.conf.d/01autoremove-kernels' '%U:%G:%a' '=' "${TEST_DEFAULT_USER}:${TEST_DEFAULT_GROUP}:444"

	msgtest 'Check kernel autoremoval protection list' 'can be dumped'
	testsuccess --nomsg aptconfig dump --no-empty --format '%v%n' 'APT::NeverAutoRemove'
	cp rootdir/tmp/testsuccess.output protected.list

	msgtest 'Check kernel autoremoval protection list' 'can be parsed'
	testfailure --nomsg grep '^[A-Z]: ' protected.list

	msgtest 'Check kernel autoremoval protection list includes' 'most recent kernel'
	testsuccess --nomsg grep '^\^linux-image-100\\\.0\\\.0-1-generic\$$' protected.list

	msgtest 'Check kernel autoremoval protection list includes' 'running kernel'
	testsuccess --nomsg grep "^\\^linux-image-$(uname -r | sed -e 's#\.#\\\\.#g')\\\$\$" protected.list

	msgtest 'Check kernel autoremoval protection list does not include' 'metapackages'
	testfailure --nomsg grep -e '^\^linux-image-amd64\$$' -e '^\^linux-image-686-pae\$$' -e ':i386' protected.list
}

AUTOREMOVE='apt autoremove'
if [ -n "$SUDO_USER" ]; then
	AUTOREMOVE="sudo $AUTOREMOVE"
fi
testsuccessequal "Reading package lists...
Building dependency tree...
Reading state information...
The following packages were automatically installed and are no longer required:
   linux-headers-1000000-1-generic (100.0.0-1)
   linux-image-1.0.0-2-generic (1.0.0-2)
   linux-image-100.0.0-1-generic (100.0.0-1)
   $CURRENTKERNEL (5-1)
   ${CURRENTKERNEL}-686-pae:i386 (5-1)
   ${CURRENTKERNEL}-dbg (5-1)
Use '$AUTOREMOVE' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded." aptget install -sV
testsuccessequal "Reading package lists...
Building dependency tree...
Reading state information...
The following packages were automatically installed and are no longer required:
   linux-headers-1000000-1-generic (100.0.0-1)
   linux-image-1.0.0-2-generic (1.0.0-2)
   linux-image-100.0.0-1-generic (100.0.0-1)
   $CURRENTKERNEL (5-1)
   ${CURRENTKERNEL}-686-pae:i386 (5-1)
   ${CURRENTKERNEL}-dbg (5-1)
   ${CURRENTKERNEL}-rt (5-1)
Use '$AUTOREMOVE' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded." aptget install -sV --ignore-hold
testequal "Reading package lists...
Building dependency tree...
Reading state information...
6 packages were automatically installed and are no longer required.
Use '$AUTOREMOVE' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded." aptget install -s -o APT::Get::HideAutoRemove=small
testequal "Reading package lists...
Building dependency tree...
Reading state information...
The following packages will be REMOVED:
   linux-headers-1000000-1-generic (100.0.0-1)
   linux-image-1.0.0-2-generic (1.0.0-2)
   linux-image-100.0.0-1-generic (100.0.0-1)
   $CURRENTKERNEL (5-1)
   ${CURRENTKERNEL}-686-pae:i386 (5-1)
   ${CURRENTKERNEL}-dbg (5-1)
0 upgraded, 0 newly installed, 6 to remove and 0 not upgraded.
Remv linux-headers-1000000-1-generic [100.0.0-1]
Remv linux-image-1.0.0-2-generic [1.0.0-2]
Remv linux-image-100.0.0-1-generic [100.0.0-1]
Remv $CURRENTKERNEL [5-1]
Remv ${CURRENTKERNEL}-686-pae:i386 [5-1]
Remv ${CURRENTKERNEL}-dbg [5-1]" aptget autoremove -sV

msgmsg "run without parameter"
testprotected
msgtest 'Check kernel autoremoval protection list does not include' 'old kernel'
testfailure --nomsg grep '^\^linux-image-1\\\.0\\\.0-2-generic\$$' protected.list
testsuccessequal "Reading package lists...
Building dependency tree...
Reading state information...
The following packages will be REMOVED:
  linux-headers-1000000-1-generic linux-image-1.0.0-2-generic
  ${CURRENTKERNEL}-dbg
0 upgraded, 0 newly installed, 3 to remove and 0 not upgraded.
Remv linux-headers-1000000-1-generic [100.0.0-1]
Remv linux-image-1.0.0-2-generic [1.0.0-2]
Remv ${CURRENTKERNEL}-dbg [5-1]" aptget autoremove -s

msgmsg "install unknown kernel"
# even if installed/uname reports a kernel which we can't find via dpkg,
# ensure that we still protect it just in case as these are kernels we
# know for sure without complicated detection mechanisms
testprotected 1.0.0-2-ungeneric
msgtest 'Check kernel autoremoval protection list does not include' 'old kernel'
testfailure --nomsg grep '^\^linux-image-1\\\.0\\\.0-2-generic\$$' protected.list
msgtest 'Check kernel autoremoval protection list does include' 'unknown installed kernel'
testsuccess --nomsg grep '^\^linux-image-1\\\.0\\\.0-2-ungeneric\$$' protected.list
testsuccessequal "Reading package lists...
Building dependency tree...
Reading state information...
The following packages will be REMOVED:
  linux-headers-1000000-1-generic linux-image-1.0.0-2-generic
  ${CURRENTKERNEL}-dbg
0 upgraded, 0 newly installed, 3 to remove and 0 not upgraded.
Remv linux-headers-1000000-1-generic [100.0.0-1]
Remv linux-image-1.0.0-2-generic [1.0.0-2]
Remv ${CURRENTKERNEL}-dbg [5-1]" aptget autoremove -s

msgmsg "install an old kernel"
testprotected 1.0.0-2-generic
msgtest 'Check kernel autoremoval protection list includes' 'installed kernel'
testsuccess --nomsg grep '^\^linux-image-1\\\.0\\\.0-2-generic\$$' protected.list
testsuccessequal "Reading package lists...
Building dependency tree...
Reading state information...
The following packages will be REMOVED:
  linux-headers-1000000-1-generic ${CURRENTKERNEL}-dbg
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.
Remv linux-headers-1000000-1-generic [100.0.0-1]
Remv ${CURRENTKERNEL}-dbg [5-1]" aptget autoremove -s

# rt kernel was put on hold while the protected list was generated
testsuccess aptmark unhold "${CURRENTKERNEL}-rt"
testsuccessequal "Reading package lists...
Building dependency tree...
Reading state information...
The following packages will be REMOVED:
  linux-headers-1000000-1-generic ${CURRENTKERNEL}-dbg
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.
Remv linux-headers-1000000-1-generic [100.0.0-1]
Remv ${CURRENTKERNEL}-dbg [5-1]" aptget autoremove -s
