ostree/tests/test-pull-corruption.sh
Colin Walters 73d910e82e Add public API for fsck, use it before loading metadata
A while ago I did `truncate -s 0 /path/to/repo/00/123.commit`, and expected a
checksum error, but I actually got a validation error due to us loading the
commit into a variant and trying to parse out the parent checksum, etc.

I first started by changing the `load_and_fsck_one_object()` function to
checksum before loading, but the problem is that we do a traverse of all objects
first. Fixing this is going to require an `OSTREE_REPO_COMMIT_TRAVER_FLAG_FSCK`
or something.

In the meantime at least though, let's add a public API to fsck a single object
which *does* checksum cleanly before parsing the object, and change the `fsck`
command to use it.

We then change the fsck binary to do this while iterating over the refs
and finding the commit object.  This way we'll at least get a checksum
first for commit objects, even if not dirtree/dirmeta.

Closes: #1364
Approved by: jlebon
2017-12-12 14:03:09 +00:00

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#!/bin/bash
#
# Copyright (C) 2011,2013 Colin Walters <walters@verbum.org>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
set -euo pipefail
# If gjs is not installed, skip the test
if ! gjs --help >/dev/null 2>&1; then
echo "1..0 # SKIP no gjs"
exit 0
fi
. $(dirname $0)/libtest.sh
setup_fake_remote_repo1 "archive"
echo '1..3'
repopath=${test_tmpdir}/ostree-srv/gnomerepo
cp -a ${repopath} ${repopath}.orig
do_corrupt_pull_test() {
cd ${test_tmpdir}
rm repo -rf
mkdir repo
ostree_repo_init repo
${CMD_PREFIX} ostree --repo=repo remote add --set=gpg-verify=false origin $(cat httpd-address)/ostree/gnomerepo
if ${CMD_PREFIX} ostree --repo=repo pull origin main; then
assert_not_reached "pull unexpectedly succeeded!"
fi
rm -rf ${repopath}
cp -a ${repopath}.orig ${repopath}
${CMD_PREFIX} ostree --repo=repo pull origin main
if ${CMD_PREFIX} ostree --repo=repo fsck; then
echo "ok pull with correct data worked"
else
assert_not_reached "pull with correct data failed!"
fi
}
# FIXME - ignore errors here since gjs in RHEL7 has the final
# unrooting bug
gjs $(dirname $0)/corrupt-repo-ref.js ${repopath} main || true
assert_file_has_content corrupted-status.txt 'Changed byte'
do_corrupt_pull_test
echo "ok corruption"
if ! skip_one_without_user_xattrs; then
# Set up a corrupted commit object
rm ostree-srv httpd repo -rf
setup_fake_remote_repo1 "archive"
rev=$(ostree --repo=ostree-srv/gnomerepo rev-parse main)
corruptrev=$(echo ${rev} hello | sha256sum | cut -f 1 -d ' ')
assert_not_streq ${rev} ${corruptrev}
rev_path=ostree-srv/gnomerepo/objects/${rev:0:2}/${rev:2}.commit
corruptrev_path=ostree-srv/gnomerepo/objects/${corruptrev:0:2}/${corruptrev:2}.commit
mkdir -p $(dirname ${corruptrev_path})
mv ${rev_path} ${corruptrev_path}
echo ${corruptrev} > ostree-srv/gnomerepo/refs/heads/main
${CMD_PREFIX} ostree --repo=ostree-srv/gnomerepo summary -u
if ${CMD_PREFIX} ostree --repo=ostree-srv/gnomerepo fsck 2>err.txt; then
assert_not_reached "fsck with corrupted commit worked?"
fi
assert_file_has_content_literal err.txt "Corrupted commit object; checksum expected='${corruptrev}' actual='${rev}'"
# Do a pull-local; this should succeed since we don't verify checksums
# for local repos by default.
rm repo err.txt -rf
ostree_repo_init repo --mode=bare-user
${CMD_PREFIX} ostree --repo=repo pull-local ostree-srv/gnomerepo main
rm repo err.txt -rf
ostree_repo_init repo --mode=bare-user
if ${CMD_PREFIX} ostree --repo=repo pull-local --untrusted ostree-srv/gnomerepo main 2>err.txt; then
assert_not_reached "pull-local --untrusted worked?"
fi
assert_file_has_content_literal err.txt "Corrupted commit object; checksum expected='${corruptrev}' actual='${rev}'"
rm repo err.txt -rf
ostree_repo_init repo --mode=bare-user
${CMD_PREFIX} ostree --repo=repo remote add --set=gpg-verify=false origin $(cat httpd-address)/ostree/gnomerepo
if ${CMD_PREFIX} ostree --repo=repo pull origin main 2>err.txt; then
assert_not_reached "pull unexpectedly succeeded!"
fi
assert_file_has_content_literal err.txt "Corrupted commit object; checksum expected='${corruptrev}' actual='${rev}'"
echo "ok pull commit corruption"
fi