nginx Chroot Helper Script To Copy Libs To /lib64 and /usr/lib64

nginx-chroot-helper.sh

#!/bin/bash

set -e
# Use this script to copy shared (libs) files to nginx chrooted
# jail server. This is tested on 64 bit Linux (Redhat and Friends only)
# ----------------------------------------------------------------------------
# Original Written by Vivek Gite <http://www.cyberciti.biz/>
# (c) 2006 nixCraft under GNU GPL v2.0+
# ----------------------------------------------------------------------------
# See url for usage:
# http://www.cyberciti.biz/faq/howto-run-nginx-in-a-chroot-jail/
# ----------------------------------------------------------------------------

sync_dependencies() {
    local JAILROOT="$1"
    local pFILE="$2"

    local files=""
    local _cp="/bin/cp"

    files="$(ldd "$pFILE" | sed 's|^\s*\(.* => \)*\(.*\) (0x[0-9a-f]\+)$|\2|')"

    for LIB in $files
    do
        LIBDIR="$(dirname "$LIB")"
        [ -d "${JAILROOT}${LIBDIR}" ] || mkdir -vp "${JAILROOT}${LIBDIR}"
        "${_cp}" -vf "$LIB" "${JAILROOT}${LIBDIR}"
    done

    # Works with 32 and 64 bit ld-linux
    sldl="$(ldd "$pFILE" | grep 'ld-linux' | awk '{ print $1}')"
    sldlsubdir="$(dirname "${sldl}")"
    [ -d "${JAILROOT}${sldlsubdir}" ] || mkdir -vp "${JAILROOT}${sldlsubdir}"
    [ -f "${JAILROOT}${sldl}" ] || "${_cp}" -vf "${sldl}" "${JAILROOT}${sldlsubdir}"
}

usage() {
    echo "Syntax : $0 /var/chroot /usr/local/nginx/sbin/nginx" >&2
    echo "Example: $0 /home/user /usr/bin/php5-cgi" >&2
    exit 1
}

[ $# = 2 ] || usage
BASE="$1"
BINARY="$2"
[ -d "$BASE" ] || usage
[ -f "$BINARY" ] || usage

sync_dependencies "$BASE" "$BINARY"