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158 lines
3.3 KiB
158 lines
3.3 KiB
#!/usr/bin/env bash
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#
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# Script to install host system binaries along with required libraries.
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#
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# Copyright (C) 2012-2017 Jo-Philipp Wich <jo@mein.io>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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DIR="$1"; shift
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_cp() {
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cp ${VERBOSE:+-v} -L "$1" "$2" || {
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echo "cp($1 $2) failed" >&2
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exit 1
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}
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}
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_mv() {
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mv ${VERBOSE:+-v} "$1" "$2" || {
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echo "mv($1 $2) failed" >&2
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exit 1
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}
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}
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_md() {
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mkdir ${VERBOSE:+-v} -p "$1" || {
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echo "mkdir($1) failed" >&2
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exit 2
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}
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}
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_ln() {
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ln ${VERBOSE:+-v} -sf "$1" "$2" || {
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echo "ln($1 $2) failed" >&2
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exit 3
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}
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}
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_relpath() {
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local base="$(readlink -f "$1")"
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local dest="$(readlink -f "$2")"
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local up
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[ -d "$base" ] || base="${base%/*}"
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[ -d "$dest" ] || dest="${dest%/*}"
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while true; do
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case "$base"
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in "$dest"/*)
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echo "$up/${base#$dest/}"
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break
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;;
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*)
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dest="${dest%/*}"
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up="${up:+$up/}.."
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;;
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esac
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done
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}
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_wrapper() {
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cat <<-EOT | ${CC:-gcc} -x c -o "$1" -
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#include <unistd.h>
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#include <stdio.h>
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int main(int argc, char **argv) {
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const char *self = argv[0];
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const char *target = argv[1];
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if (argc < 3) {
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fprintf(stderr, "Usage: %s executable arg0 [args...]\n", self);
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return 1;
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}
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return execv(target, argv + 2);
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}
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EOT
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[ -x "$1" ] || {
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echo "compiling wrapper failed" >&2
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exit 5
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}
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}
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for LDD in ${PATH//://ldd }/ldd; do
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"$LDD" --version >/dev/null 2>/dev/null && break
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LDD=""
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done
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[ -n "$LDD" -a -x "$LDD" ] || LDD=
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for BIN in "$@"; do
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[ -n "$BIN" -a -n "$DIR" ] || {
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echo "Usage: $0 <destdir> <executable> ..." >&2
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exit 1
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}
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[ ! -d "$DIR/lib" ] && {
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_md "$DIR/lib"
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_md "$DIR/usr"
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_ln "../lib" "$DIR/usr/lib"
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}
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[ ! -x "$DIR/lib/runas" ] && {
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_wrapper "$DIR/lib/runas"
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}
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LDSO=""
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[ -n "$LDD" ] && [ -x "$BIN" ] && file "$BIN" | grep -sqE "ELF.*executable" && {
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for token in $("$LDD" "$BIN" 2>/dev/null); do
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case "$token" in */*.so*)
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case "$token" in
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*ld-*.so*) LDSO="${token##*/}" ;;
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esac
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dest="$DIR/lib/${token##*/}"
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ddir="${dest%/*}"
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[ -f "$token" -a ! -f "$dest" ] && {
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_md "$ddir"
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_cp "$token" "$dest"
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}
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;; esac
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done
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}
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# is a dynamically linked executable
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if [ -n "$LDSO" ]; then
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echo "Bundling ${BIN##*/}"
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RUNDIR="$(readlink -f "$BIN")"; RUNDIR="${RUNDIR%/*}"
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RUN="${LDSO#ld-}"; RUN="run-${RUN%%.so*}.sh"
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REL="$(_relpath "$DIR/lib" "$BIN")"
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_mv "$BIN" "$RUNDIR/.${BIN##*/}.bin"
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cat <<-EOF > "$BIN"
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#!/usr/bin/env bash
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dir="\$(dirname "\$0")"
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exec "\$dir/${REL:+$REL/}$LDSO" --library-path "\$dir/${REL:+$REL/}" "\$dir/${REL:+$REL/}runas" "\$dir/.${BIN##*/}.bin" "\$0" "\$@"
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EOF
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chmod ${VERBOSE:+-v} 0755 "$BIN"
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fi
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done
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