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71 lines
1.2 KiB
Bash
71 lines
1.2 KiB
Bash
#!/bin/bash
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## Tunnel ssh over an XMPP MUC
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##
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## Server (system with access to the SSH and XMPP server):
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##
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## # ssh-over-xmpp server <conference> <IP address> <port>
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## ssh-over-xmpp server sshxmpp 1.2.3.4 22
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##
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## Client (system with access to the XMPP server):
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##
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## ssh -o ProxyCommand="ssh-over-xmpp client sshxmpp" 127.0.0.1
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##
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set -o errexit
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set -o nounset
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set -o pipefail
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if [ "$DEBUG" ]; then
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set -x
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fi
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PROGNAME=$0
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TMPDIR=$(mktemp -d)
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out=$TMPDIR/out
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atexit() {
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rm -rf $TMPDIR
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}
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decode() {
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while read line; do
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OFS=$IFS
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IFS=:
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set -- $line
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[ "$1" = "m" ] && printf '%b' "${!#//%/\\x}"
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IFS=$OFS
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done
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}
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server() {
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CONNECT=0
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xmppipe -e -r server -o $1 -b 1024 -x < /dev/null | \
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while read line; do
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case $line in
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p*)
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CONNECT=$((CONNECT + 1))
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if [ "$CONNECT" -gt "1" ]; then
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exec "$PROGNAME" session $@
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fi
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;;
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*) ;;
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esac
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done > /dev/null
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}
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session(){
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mkdir -p $TMPDIR
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trap atexit 0
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mkfifo $out
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nc $2 $3 < $out | xmppipe -P 100 -r session -o $1 -x -s | decode > $out
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}
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client() {
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xmppipe -P 100 -r client -o $1 -x -s | decode
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}
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$@
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