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#!/usr/bin/env bash
set -euo pipefail
OPTS=$(getopt -o hds:x: --long help,debug,sock:,exec:,ssh,gpg,gpg-extra,discord -n 'javawrap' -- "$@")
eval set -- "$OPTS"
PAGEANT="$HOME/.ssh/wsl2-ssh-pageant.exe"
NPIPE="$(command -v npiperelay.exe)"
SCRIPT="$(basename "$0")"
help() {
cat <<-EOF
$SCRIPT
Toby Vincent <tobyv13@gmail.com>
$SCRIPT description
USAGE:
$SCRIPT [OPTIONS] <COMMAND>
$SCRIPT [OPTIONS]
OPTIONS:
-h, --help Display this message
-s, --sock <SOCKET> Path to the linux socket
-x, --exec <CMD> Command to run for socat's EXEC: arg
--ssh Relay the ssh agent's socket
--gpg Relay the gpg agent's socket
--gpg-extra Relay the gpg agent's extra socket
ARGS:
start (default)
Start the socat process
stop
Kill the socat process
EOF
}
say() {
if ! $quiet; then
echo "$SCRIPT: $1"
fi
}
say_err() {
say "$1" >&2
}
err() {
say_err "ERROR: $1"
exit 1
}
need() {
for cmd in $@; do
if ! command -v $cmd >/dev/null 2>&1; then
err "need $cmd (command not found)"
fi
done
}
start() {
if ! ss -a | grep -q "$sock"; then
if test -x "$relay"; then
rm -rf "$sock"
(setsid nohup socat UNIX-LISTEN:"${sock},${listen_args}" EXEC:"$cmd" >/dev/null 2>&1 &)
else
echo >&2 "WARNING: $relay is not executable."
fi
fi
if $gpg; then
gpg-connect-agent.exe /bye &>/dev/null
fi
}
stop() {
if $gpg; then
gpg-connect-agent.exe KILLAGENT /bye &>/dev/null
fi
if pgrep -f "socat.*$sock.*$relay" &>/dev/null; then
pkill -f "socat.*$sock.*$relay"
fi
}
check() {
pgrep -fa "socat.*$sock.*$relay"
}
quiet=false
debug=false
sock=""
cmd=""
gpg=false
ssh=false
extra=false
discord=false
while test $# -gt 0; do
case $1 in
-h | --help)
help
return 0
;;
-q | --quiet)
quiet=true
shift
;;
-d | --debug)
debug=true
shift
;;
-s | --sock)
sock=$2
shift
shift
;;
-x | --exec)
cmd=$2
shift
shift
;;
--ssh)
ssh=true
shift
;;
--gpg)
gpg=true
shift
;;
--gpg-extra)
gpg=true
extra=true
shift
;;
--discord)
discord=true
shift
;;
--)
shift
break
;;
*)
help
exit 1
;;
esac
done
need ss
need socat
listen_args="fork"
case true in
$ssh)
need $PAGEANT
sock="${SSH_AUTH_SOCK:-$HOME/.ssh/agent.sock}"
cmd="$PAGEANT"
;;
$gpg)
need $PAGEANT
need "gpg-connect-agent.exe"
sock="${GPG_AGENT_SOCK:-$HOME/.gnupg/S.gpg-agent}"
if $extra; then
sock+=".extra"
fi
cmd="$PAGEANT --gpg $(basename $sock)"
;;
$discord)
need $NPIPE
sock="${DISCORD_IPC_SOCK:-/var/run/discord-ipc-0}"
cmd="$NPIPE -ep -s //./pipe/$(basename $sock)"
listen_args="fork,group=discord,umask=007"
;;
$(test -z "${cmd}"))
err "No EXEC provided. Must supply either --ssh, --gpg, --gpg-extra, --pipe, or --exec"
;;
esac
if test -z "${sock}"; then
err "No socket provided."
fi
relay="$(echo $cmd | head -n1 | awk '{print $1;}')"
case ${1:-'start'} in
check)
shift
check
;;
start)
shift
start
;;
stop)
shift
stop
;;
restart)
shift
stop
start
;;
*)
help
exit 1
;;
esac
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