73 lines
2.0 KiB
Bash
Executable File
73 lines
2.0 KiB
Bash
Executable File
#!/bin/bash -eu
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# If using normal root, avoid changing anything.
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if [ -z "$RPM_BUILD_ROOT" -o "$RPM_BUILD_ROOT" = "/" ]; then
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exit 0
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fi
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exclude_files="${1:-}"
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exclude_shebangs="${2:-}"
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cd "$RPM_BUILD_ROOT"
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trim() {
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printf '%s' "$*"
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}
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fail=0
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while IFS= read -r -d $'\0' f; do
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file -N --mime-type "$f" | grep -q -P ".+(?=: text/)" || continue
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# Remove the dot
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path="${f#.}"
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if [ -n "$exclude_files" ]; then
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echo "$path" | grep -q -E "$exclude_files" && continue
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fi
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ts=$(stat -c %y "$f")
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read shebang_line < "$f" || :
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orig_shebang=$(trim $(echo "$shebang_line" | grep -Po "#!\K.*" || echo))
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shebang="$orig_shebang"
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if [ -n "$exclude_shebangs" ]; then
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echo "$shebang" | grep -q -E "$exclude_shebangs" && continue
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fi
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if [ -z "$shebang" ]; then
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echo >&2 "*** WARNING: $f is executable but has empty or no shebang, removing executable bit"
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chmod -x "$f"
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touch -d "$ts" "$f"
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continue
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elif [ -n "${shebang##/*}" ]; then
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echo >&2 "*** ERROR: $f has shebang which doesn't start with '/' ($shebang)"
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fail=1
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continue
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fi
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if ! { echo "$shebang" | grep -q -P "^/(?:usr/)?(?:bin|sbin)/"; }; then
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continue
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fi
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# Replace "special" env shebang:
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# /whatsoever/env /whatever/foo → /whatever/foo
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shebang=$(echo "$shebang" | sed -r -e 's@^(.+)/env /(.+)$@/\2@')
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# /whatsoever/env foo → /whatsoever/foo
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shebang=$(echo "$shebang" | sed -r -e 's@^(.+/)env (.+)$@\1\2@')
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# Replace ambiguous python with python2
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py_shebang=$(echo "$shebang" | sed -r -e 's@/usr/bin/python(\s|$)@/usr/bin/python2\1@')
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if [ "$shebang" != "$py_shebang" ]; then
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sed -i -e "1c #!$py_shebang" "$f"
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echo >&2 "*** WARNING: mangling shebang in $path from #!$orig_shebang to #!$py_shebang. This will become an ERROR, fix it manually!"
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elif [ "#!$shebang" != "#!$orig_shebang" ]; then
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sed -i -e "1c #!$shebang" "$f"
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echo "mangling shebang in $path from $orig_shebang to #!$shebang"
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fi
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touch -d "$ts" "$f"
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done < <(find -executable -type f -print0)
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exit $fail
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