#!/usr/bin/env bash
#
# Script to install host system binaries along with required libraries.
-# Refer to the --help output for more information.
#
-# Copyright (C) 2012 Jo-Philipp Wich <jow@openwrt.org>
+# Copyright (C) 2012-2017 Jo-Philipp Wich <jo@mein.io>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
}
}
+_mv() {
+ mv ${VERBOSE:+-v} "$1" "$2" || {
+ echo "mv($1 $2) failed" >&2
+ exit 1
+ }
+}
+
_md() {
mkdir ${VERBOSE:+-v} -p "$1" || {
echo "mkdir($1) failed" >&2
}
}
+_relpath() {
+ local base="$(readlink -f "$1")"
+ local dest="$(readlink -f "$2")"
+ local up
+
+ [ -d "$base" ] || base="${base%/*}"
+ [ -d "$dest" ] || dest="${dest%/*}"
+
+ while true; do
+ case "$base"
+ in "$dest"/*)
+ echo "$up/${base#$dest/}"
+ break
+ ;;
+ *)
+ dest="${dest%/*}"
+ up="${up:+$up/}.."
+ ;;
+ esac
+ done
+}
+
+_wrapper() {
+ cat <<-EOT | ${CC:-gcc} -x c -o "$1" -
+ #include <unistd.h>
+ #include <stdio.h>
+
+ int main(int argc, char **argv) {
+ const char *self = argv[0];
+ const char *target = argv[1];
+
+ if (argc < 3) {
+ fprintf(stderr, "Usage: %s executable arg0 [args...]\n", self);
+ return 1;
+ }
+
+ return execv(target, argv + 2);
+ }
+ EOT
+
+ [ -x "$1" ] || {
+ echo "compiling wrapper failed" >&2
+ exit 5
+ }
+}
+
for LDD in ${PATH//://ldd }/ldd; do
"$LDD" --version >/dev/null 2>/dev/null && break
LDD=""
done
-[ -n "$LDD" -a -x "$LDD" ] || {
- echo "Unable to find working ldd" >&2
- exit 4
-}
+[ -n "$LDD" -a -x "$LDD" ] || LDD=
for BIN in "$@"; do
- [ -n "$BIN" -a -x "$BIN" -a -n "$DIR" ] || {
+ [ -n "$BIN" -a -n "$DIR" ] || {
echo "Usage: $0 <destdir> <executable> ..." >&2
exit 1
}
- [ ! -d "$DIR/bundled/lib" ] && {
- _md "$DIR/bundled/lib"
- _md "$DIR/bundled/usr"
- _ln "../lib" "$DIR/bundled/usr/lib"
+ [ ! -d "$DIR/lib" ] && {
+ _md "$DIR/lib"
+ _md "$DIR/usr"
+ _ln "../lib" "$DIR/usr/lib"
}
- LDSO=""
-
- echo "Bundling ${BIN##*/}"
- for token in $("$LDD" "$BIN" 2>/dev/null); do
- case "$token" in */*.so*)
- case "$token" in
- *ld-*.so*) LDSO="${token##*/}" ;;
- *) echo " * lib: ${token##*/}" ;;
- esac
-
- dest="$DIR/bundled/lib/${token#*/lib*/}"
- ddir="${dest%/*}"
-
- [ -f "$token" -a ! -f "$dest" ] && {
- _md "$ddir"
- _cp "$token" "$dest"
+ [ ! -x "$DIR/lib/runas" ] && {
+ _wrapper "$DIR/lib/runas"
+ }
- case "$token" in */tls/*.so*)
- _cp "${token%/tls/*}/${token##*/}" "$DIR/bundled/lib/${token##*/}"
- ;; esac
- }
- ;; esac
- done
+ LDSO=""
- _md "$DIR"
+ [ -n "$LDD" ] && [ -x "$BIN" ] && file "$BIN" | grep -sqE "ELF.*executable" && {
+ for token in $("$LDD" "$BIN" 2>/dev/null); do
+ case "$token" in */*.so*)
+ case "$token" in
+ *ld-*.so*) LDSO="${token##*/}" ;;
+ esac
+
+ dest="$DIR/lib/${token##*/}"
+ ddir="${dest%/*}"
+
+ [ -f "$token" -a ! -f "$dest" ] && {
+ _md "$ddir"
+ _cp "$token" "$dest"
+ }
+ ;; esac
+ done
+ }
# is a dynamically linked executable
if [ -n "$LDSO" ]; then
- _cp "$BIN" "$DIR/bundled/${BIN##*/}"
-
- [ -x "$DIR/bundled/run.sh" ] || {
- cat <<-EOF > "$DIR/bundled/run.sh"
- #!/usr/bin/env bash
- dir="\$(dirname "\$0")"
- bin="\$(basename "\$0")"
- exec -a "\$0" "\$dir/bundled/lib/$LDSO" --library-path "\$dir/bundled/lib" "\$dir/bundled/\$bin" "\$@"
- EOF
- chmod ${VERBOSE:+-v} 0755 "$DIR/bundled/run.sh"
- }
+ echo "Bundling ${BIN##*/}"
+
+ RUNDIR="$(readlink -f "$BIN")"; RUNDIR="${RUNDIR%/*}"
+ RUN="${LDSO#ld-}"; RUN="run-${RUN%%.so*}.sh"
+ REL="$(_relpath "$DIR/lib" "$BIN")"
+
+ _mv "$BIN" "$RUNDIR/.${BIN##*/}.bin"
- _ln "./bundled/run.sh" "$DIR/${BIN##*/}"
+ cat <<-EOF > "$BIN"
+ #!/usr/bin/env bash
+ dir="\$(dirname "\$0")"
+ exec "\$dir/${REL:+$REL/}$LDSO" --library-path "\$dir/${REL:+$REL/}" "\$dir/${REL:+$REL/}runas" "\$dir/.${BIN##*/}.bin" "\$0" "\$@"
+ EOF
- # is a static executable or non-elf binary
- else
- echo " * not dynamically linked"
- _cp "$BIN" "$DIR/${BIN##*/}"
+ chmod ${VERBOSE:+-v} 0755 "$BIN"
fi
done