apt/test/integration/test-apt-update-stale

#!/bin/sh
#
# Ensure that a MITM can not stale the Packages/Sources without
# raising a error message. Note that the Release file is protected
# via the "Valid-Until" header
#
set -e

TESTDIR="$(readlink -f "$(dirname "$0")")"
. "$TESTDIR/framework"

setupenvironment
configarchitecture "i386"

insertpackage 'unstable' 'foo' 'i386' '1.0'

setupaptarchive --no-update
changetowebserver

echo "Acquire::Languages \"none\";" > rootdir/etc/apt/apt.conf.d/00nolanguages
testsuccess aptget update -o Debug::pkgAcquire::Worker=1 -o Debug::Acquire::http=1
listcurrentlistsdirectory > lists.before

# insert new version
mkdir aptarchive/dists/unstable/main/binary-i386/saved
cp -p aptarchive/dists/unstable/main/binary-i386/Packages* \
     aptarchive/dists/unstable/main/binary-i386/saved
insertpackage 'unstable' 'foo' 'i386' '2.0'
touch -d '+1 hour' aptarchive/dists/unstable/main/binary-i386/Packages
compressfile aptarchive/dists/unstable/main/binary-i386/Packages
# ensure that we do not get a I-M-S hit for the Release file

generatereleasefiles '+1hour'
signreleasefiles

# but now only deliver the previous Packages file instead of the new one
# (simulating a stale attack)
cp -p aptarchive/dists/unstable/main/binary-i386/saved/Packages* \
     aptarchive/dists/unstable/main/binary-i386/

# ensure this raises an error
testfailuremsg "E: Failed to fetch http://localhost:${APTHTTPPORT}/dists/unstable/main/binary-i386/Packages.gz  Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead." aptget update -o Debug::pkgAcquire::Worker=1 -o Debug::Acquire::http=1
testfileequal lists.before "$(listcurrentlistsdirectory)"