policy: Fix the new policy implementation to handle downgrades correctly

[apt.git] / test / integration / test-cve-2013-1051-InRelease-parsing

#!/bin/sh
set -e

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

setupenvironment
configarchitecture 'i386'

insertpackage 'stable' 'good-pkg' 'all' '1.0'

setupaptarchive

changetowebserver
ARCHIVE='http://localhost:8080'
msgtest 'Initial apt-get update should work with' 'InRelease'
testsuccess --nomsg aptget update

# check that the setup is correct
testsuccessequal "good-pkg:
  Installed: (none)
  Candidate: 1.0
  Version table:
     1.0 0
        500 ${ARCHIVE} stable/main i386 Packages" aptcache policy good-pkg

# now exchange to the Packages file, note that this could be
# done via MITM too
insertpackage 'stable' 'bad-mitm' 'all' '1.0'

# this builds compressed files and a new (unsigned) Release
buildaptarchivefromfiles '+1hour'

# add a space into the BEGIN PGP SIGNATURE PART/END PGP SIGNATURE part
# to trick apt - this is still legal to gpg(v)
sed -i '/^-----BEGIN PGP SIGNATURE-----/,/^-----END PGP SIGNATURE-----/ s/^$/  /g'  aptarchive/dists/stable/InRelease

# we append the (evil unsigned) Release file to the (good signed) InRelease
cat aptarchive/dists/stable/Release >> aptarchive/dists/stable/InRelease
touch -d '+1hour' aptarchive/dists/stable/InRelease

# ensure the update doesn't load bad data as good data
# Note that we will pick up the InRelease itself as we download no other
# indexes which would trigger a hashsum mismatch, but we ignore the 'bad'
# part of the InRelease
listcurrentlistsdirectory | sed '/_InRelease/ d' > listsdir.lst
msgtest 'apt-get update should ignore unsigned data in the' 'InRelease'
testsuccessequal "Get:1 http://localhost:8080 stable InRelease [$(stat -c%s aptarchive/dists/stable/InRelease) B]
Reading package lists..." --nomsg aptget update
testfileequal './listsdir.lst' "$(listcurrentlistsdirectory | sed '/_InRelease/ d')"

# ensure there is no package
testfailureequal 'Reading package lists...
Building dependency tree...
E: Unable to locate package bad-mitm' aptget install bad-mitm -s

# and verify that its not picked up
testsuccessequal 'N: Unable to locate package bad-mitm' aptcache policy bad-mitm -q=0

# and that the right one is used
testsuccessequal "good-pkg:
  Installed: (none)
  Candidate: 1.0
  Version table:
     1.0 0
        500 ${ARCHIVE} stable/main i386 Packages" aptcache policy good-pkg