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#! /bin/sh -e
PATCHELF=$(readlink -f "../src/patchelf")
SCRATCH="scratch/$(basename "$0" .sh)"
READELF=${READELF:-readelf}
LIB_NAME="${PWD}/libshared-rpath.so"
rm -rf "${SCRATCH}"
mkdir -p "${SCRATCH}"
cd "${SCRATCH}"
has_x() {
strings "$1" | grep -c "XXXXXXXX"
}
nm -D "${LIB_NAME}" | grep a_symbol_name
previous_cnt="$(strings "${LIB_NAME}" | grep -c a_symbol_name)"
echo "#### Number of a_symbol_name strings in the library: $previous_cnt"
echo "#### Rename the rpath to something larger than the original"
# Pathelf should detect that the rpath string is shared with the symbol name string and avoid
# tainting the string with Xs
"${PATCHELF}" --set-rpath a_very_big_rpath_that_is_larger_than_original --output liblarge-rpath.so "${LIB_NAME}"
echo "#### Checking symbol is still there"
nm -D liblarge-rpath.so | grep a_symbol_name
echo "#### Checking there are no Xs"
[ "$(has_x liblarge-rpath.so)" -eq 0 ] || exit 1
current_cnt="$(strings liblarge-rpath.so | grep -c a_symbol_name)"
echo "#### Number of a_symbol_name strings in the modified library: $current_cnt"
[ "$current_cnt" -eq "$previous_cnt" ] || exit 1
echo "#### Rename the rpath to something shorter than the original"
# Pathelf should detect that the rpath string is shared with the symbol name string and avoid
# overwriting the existing string
"${PATCHELF}" --set-rpath shrt_rpth --output libshort-rpath.so "${LIB_NAME}"
echo "#### Checking symbol is still there"
nm -D libshort-rpath.so | grep a_symbol_name
echo "#### Number of a_symbol_name strings in the modified library: $current_cnt"
current_cnt="$(strings libshort-rpath.so | grep -c a_symbol_name)"
[ "$current_cnt" -eq "$previous_cnt" ] || exit 1
echo "#### Now liblarge-rpath.so should have its own rpath, so it should be allowed to taint it"
"${PATCHELF}" --set-rpath a_very_big_rpath_that_is_larger_than_original__even_larger --output liblarge-rpath2.so liblarge-rpath.so
[ "$(has_x liblarge-rpath2.so)" -eq 1 ] || exit 1
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