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#!/bin/bash
set -e
# generate a diff between 2 binaries
/usr/bin/bsdiff /usr/bin/bspatch \
/usr/bin/bsdiff \
${AUTOPKGTEST_TMP}/bspatch_to_bsdiff.patch
# apply the patch to generate a new binary
/usr/bin/bspatch /usr/bin/bspatch \
${AUTOPKGTEST_TMP}/patched_bspatch \
${AUTOPKGTEST_TMP}/bspatch_to_bsdiff.patch
# calculate the checksums
EXPECTED_CHECKSUM=$(sha256sum < /usr/bin/bsdiff)
PATCHED_CHECKSUM=$(sha256sum < ${AUTOPKGTEST_TMP}/patched_bspatch)
# compare output with expected output
if [[ "${EXPECTED_CHECKSUM}" = "${PATCHED_CHECKSUM}" ]]; then
echo "PASS"
exit 0
fi
echo "FAIL unable to bspatch a binary using a patch created with bsdiff"
exit 1
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