106 lines · bash
1#!/bin/sh2#3# Program: RemoteRunSafely.sh4#5# Synopsis: This script simply runs another program remotely using ssh.6# It always returns the another program exit code or exit with7# code 255 which indicates that the program could not be executed.8#9# Syntax: 10#11# RemoteRunSafely.sh <hostname> [-l <login_name>] [-p <port>]12# <program> <args...>13#14# where:15# <hostname> is the remote host to execute the program,16# <login_name> is the username on the remote host,17# <port> is the port used by the remote client,18# <program> is the path to the program to run,19# <args...> are the arguments to pass to the program.20#21 22printUsageAndExit()23{24 echo "Usage:"25 echo "./RemoteRunSafely.sh <hostname> [-l <login_name>] [-p <port>] " \26 "<program> <args...>"27 exit 25528}29 30moreArgsExpected()31{32 # $1 - remaining number of arguments33 # $2 - number of arguments to shift34 if [ $1 -lt $2 ]35 then36 echo "Error: Wrong number of arguments."37 printUsageAndExit38 fi39}40 41# Save a copy of the original arguments in a string before we42# clobber them with the shift command.43ORIG_ARGS="$*"44#DEBUG: echo 'GOT: '$ORIG_ARGS45 46moreArgsExpected $# 147RHOST=$148shift 149 50RUSER=`id -un`51RCLIENT=ssh52RPORT=53WORKING_DIR=54 55moreArgsExpected $# 156if [ $1 = "-l" ]; then57 moreArgsExpected $# 258 RUSER=$259 shift 260fi61moreArgsExpected $# 162if [ $1 = "-p" ]; then63 moreArgsExpected $# 264 RPORT="-p $2"65 shift 266fi67 68moreArgsExpected $# 169PROGRAM=$(basename $1)70WORKING_DIR=$(dirname $1)71shift 172 73#DEBUG: echo 'DIR='${0%%`basename $0`}74#DEBUG: echo 'RHOST='$RHOST75#DEBUG: echo 'RUSER='$RUSER76#DEBUG: echo 'PROGRAM='$PROGRAM77#DEBUG: echo 'WORKING_DIR='$WORKING_DIR78#DEBUG: echo 'ARGS='$*79 80# Sanity check81if [ "$RHOST" = "" -o "$PROGRAM" = "" ]; then82 printUsageAndExit83fi84 85# Local program file must exist and be execuatble86local_program=$WORKING_DIR"/"$PROGRAM87if [ ! -x "$local_program" ]; then88 echo "File "$local_program" does not exist or is not an executable.."89 exit 25590fi91 92connection=$RUSER'@'$RHOST93remote="./"$PROGRAM94(95 cat $local_program | \96 $RCLIENT $connection $RPORT \97 'rm -f '$remote' ; ' \98 'cat > '$remote' ; chmod +x '$remote' ; '$remote' '$*' ; ' \99 'err=$? ; rm -f '$remote' ; exit $err'100)101err=$?102 103#DEBUG: echo script exit $err104exit $err105 106