redhat-rpm-config/brp-mangle-shebangs

139 lines
3.6 KiB
Plaintext
Raw Normal View History

#!/bin/bash -eu
2018-01-10 12:38:28 +00:00
# If using normal root, avoid changing anything.
if [ -z "$RPM_BUILD_ROOT" -o "$RPM_BUILD_ROOT" = "/" ]; then
exit 0
fi
exclude_files=""
exclude_files_from=""
exclude_shebangs=""
exclude_shebangs_from=""
usage() {
local verbose=$1 && shift
local outfile=$1 && shift
local status=$1 && shift
(
echo 'usage: brp-mangle-shebangs [--files <regexp>] [--files-from <file>] [--shebangs <regexp>] [--shebangs-from <file>]'
if [ "${verbose}" == "yes" ]; then
echo ' --files: extended regexp of files to ignore'
echo ' --files-from: file containing a list of extended regexps of files to ignore'
echo ' --shebangs: extended regexp of shebangs to ignore'
echo ' --shebangs-from: file containing a list of extended regexps of shebangs to ignore'
fi
) >>${outfile}
exit ${status}
}
while [ $# -gt 0 ] ; do
case "$1" in
--files)
exclude_files="${2}"
shift
;;
--files=*)
exclude_files="${1##--files=}"
;;
--files-from)
exclude_files_from="${2}"
shift
;;
--files-from=*)
exclude_files_from="${1##--files-from=}"
;;
--shebangs)
exclude_shebangs="${2}"
shift
;;
--shebangs=*)
exclude_shebangs="${1##--shebangs=}"
;;
--shebangs-from)
exclude_shebangs_from="${2}"
shift
;;
--shebangs-from=*)
exclude_shebangs_from="${1##--shebangs-from=}"
;;
--help|--usage|"-?"|-h)
usage yes /dev/stdout 0
;;
*)
echo "Unknown option \"${1}\"" 1>&2
usage no /dev/stderr 1
;;
esac
shift
done
2018-01-10 12:38:28 +00:00
cd "$RPM_BUILD_ROOT"
trim() {
printf '%s' "$*"
}
fail=0
while IFS= read -r -d $'\0' f; do
file -N --mime-type "$f" | grep -q -P ".+(?=: text/)" || continue
2018-01-10 12:38:28 +00:00
# Remove the dot
path="${f#.}"
if [ -n "$exclude_files" ]; then
echo "$path" | grep -q -E "$exclude_files" && continue
fi
if [ -n "$exclude_files_from" ]; then
echo "$path" | grep -q -E -f "$exclude_files_from" && continue
fi
2018-01-10 12:38:28 +00:00
ts=$(stat -c %y "$f")
read shebang_line < "$f" || :
orig_shebang=$(trim $(echo "$shebang_line" | grep -Po "#!\K.*" || echo))
shebang="$orig_shebang"
if [ -n "$exclude_shebangs" ]; then
echo "$shebang" | grep -q -E "$exclude_shebangs" && continue
fi
if [ -n "$exclude_shebangs_from" ]; then
echo "$shebang" | grep -q -E -f "$exclude_shebangs_from" && continue
fi
2018-01-10 12:38:28 +00:00
if [ -z "$shebang" ]; then
echo >&2 "*** WARNING: $f is executable but has empty or no shebang, removing executable bit"
chmod -x "$f"
touch -d "$ts" "$f"
continue
elif [ -n "${shebang##/*}" ]; then
2018-01-10 12:38:28 +00:00
echo >&2 "*** ERROR: $f has shebang which doesn't start with '/' ($shebang)"
fail=1
continue
fi
if ! { echo "$shebang" | grep -q -P "^/(?:usr/)?(?:bin|sbin)/"; }; then
continue
fi
# Replace "special" env shebang:
# /whatsoever/env /whatever/foo → /whatever/foo
shebang=$(echo "$shebang" | sed -r -e 's@^(.+)/env /(.+)$@/\2@')
2018-01-10 12:38:28 +00:00
# /whatsoever/env foo → /whatsoever/foo
shebang=$(echo "$shebang" | sed -r -e 's@^(.+/)env (.+)$@\1\2@')
# Replace ambiguous python with python2
py_shebang=$(echo "$shebang" | sed -r -e 's@/usr/bin/python(\s|$)@/usr/bin/python2\1@')
if [ "$shebang" != "$py_shebang" ]; then
sed -i -e "1c #!$py_shebang" "$f"
echo >&2 "*** WARNING: mangling shebang in $path from #!$orig_shebang to #!$py_shebang. This will become an ERROR, fix it manually!"
elif [ "#!$shebang" != "#!$orig_shebang" ]; then
2018-01-10 12:38:28 +00:00
sed -i -e "1c #!$shebang" "$f"
echo "mangling shebang in $path from $orig_shebang to #!$shebang"
2018-01-10 12:38:28 +00:00
fi
touch -d "$ts" "$f"
done < <(find -executable -type f -print0)
2018-01-10 12:38:28 +00:00
exit $fail