dotfiles/bin/ssh-fwd

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#!/bin/bash
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# Alias si le terminal est kitty
if [ "$TERM" = xterm-kitty ]; then
ssh=(kitty +kitten ssh)
else
ssh=(ssh)
fi
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# Variables
declare -a args
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# Foncitons
error() {
>&2 printf '\033[1;31m%s\033[0m \033[1m%s\033[0m\n' ERROR: "$*"
}
help() {
local name
name="$(basename "$0")"
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cat << EOF
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${name}: utilisation:
${name} SERVEUR PORT_LOCAL PORT_DISTANT [CIBLE] [-- ARGUMENTS_SSH...]
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EOF
}
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error_help() {
error "Invalid usage"
>&2 help
exit 1
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}
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requested_port_bridge_pid() {
lsof -nP -i TCP -s TCP:LISTEN | awk '($1 == "ssh" && $9 ~ /.*:'"${1}"'/) { print $2 }' | uniq | head -n 1
}
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# Analyser les arguments
while [ -n "$1" ]; do
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case "$1" in
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--)
shift
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break
;;
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*)
args+=("$1")
shift
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;;
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esac
done
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# Il doit y avoir au moins 3 arguments dans le tableau
if [ "${#args[@]}" -lt 3 ]; then
error_help
fi
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pid="$(requested_port_bridge_pid "${args[1]}")"
if [ -z "$pid" ]; then
exec "${ssh[@]}" \
-f \
-N \
-L "${args[1]}:${args[3]:-localhost}:${args[2]}" \
"${args[0]}" \
"$@"
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else
echo "Suppression de la redirection..."
kill "$pid"
fi
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