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106 lines
2.3 KiB
106 lines
2.3 KiB
4 months ago
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#!/bin/sh
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#
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# Program: RemoteRunSafely.sh
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#
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# Synopsis: This script simply runs another program remotely using ssh.
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# It always returns the another program exit code or exit with
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# code 255 which indicates that the program could not be executed.
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#
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# Syntax:
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#
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# RemoteRunSafely.sh <hostname> [-l <login_name>] [-p <port>]
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# <program> <args...>
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#
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# where:
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# <hostname> is the remote host to execute the program,
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# <login_name> is the username on the remote host,
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# <port> is the port used by the remote client,
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# <program> is the path to the program to run,
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# <args...> are the arguments to pass to the program.
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#
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printUsageAndExit()
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{
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echo "Usage:"
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echo "./RemoteRunSafely.sh <hostname> [-l <login_name>] [-p <port>] " \
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"<program> <args...>"
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exit 255
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}
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moreArgsExpected()
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{
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# $1 - remaining number of arguments
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# $2 - number of arguments to shift
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if [ $1 -lt $2 ]
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then
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echo "Error: Wrong number of argumants."
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printUsageAndExit
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fi
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}
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# Save a copy of the original arguments in a string before we
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# clobber them with the shift command.
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ORIG_ARGS="$*"
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#DEBUG: echo 'GOT: '$ORIG_ARGS
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moreArgsExpected $# 1
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RHOST=$1
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shift 1
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RUSER=`id -un`
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RCLIENT=ssh
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RPORT=
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WORKING_DIR=
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moreArgsExpected $# 1
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if [ $1 = "-l" ]; then
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moreArgsExpected $# 2
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RUSER=$2
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shift 2
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fi
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moreArgsExpected $# 1
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if [ $1 = "-p" ]; then
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moreArgsExpected $# 2
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RPORT="-p $2"
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shift 2
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fi
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moreArgsExpected $# 1
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PROGRAM=$(basename $1)
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WORKING_DIR=$(dirname $1)
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shift 1
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#DEBUG: echo 'DIR='${0%%`basename $0`}
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#DEBUG: echo 'RHOST='$RHOST
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#DEBUG: echo 'RUSER='$RUSER
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#DEBUG: echo 'PROGRAM='$PROGRAM
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#DEBUG: echo 'WORKING_DIR='$WORKING_DIR
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#DEBUG: echo 'ARGS='$*
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# Sanity check
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if [ "$RHOST" = "" -o "$PROGRAM" = "" ]; then
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printUsageAndExit
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fi
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# Local program file must exist and be execuatble
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local_program=$WORKING_DIR"/"$PROGRAM
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if [ ! -x "$local_program" ]; then
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echo "File "$local_program" does not exist or is not an executable.."
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exit 255
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fi
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connection=$RUSER'@'$RHOST
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remote="./"$PROGRAM
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(
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cat $local_program | \
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$RCLIENT $connection $RPORT \
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'rm -f '$remote' ; ' \
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'cat > '$remote' ; chmod +x '$remote' ; '$remote' '$*' ; ' \
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'err=$? ; rm -f '$remote' ; exit $err'
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)
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err=$?
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#DEBUG: echo script exit $err
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exit $err
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