1 files changed, 64 insertions, 0 deletions

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+#!/bin/sh
+# mrgrctrnl
+# configurable ssh tunneler
+# by Case Duckworth <acdw@acdw.net>
+# version 0.1
+# LICENSE: MIT
+
+usage()
+{
+        cat <<-END
+        mrgrctrnl: make magic ssh tunnels
+        usage: mrgrctrnl [-h] [-c CONF]
+
+        -h              show this help
+        -c CONF use config file CONF.
+        .               default: \$XDG_CONFIG_HOME/mrgrctrnl/config
+
+        END
+        exit "${1:-0}"
+}
+
+die()
+{
+        [ "$#" -eq 0 ] && exit 1
+        case "$1" in
+                0-9*) ec="$1"; shift ;;
+                *) ec=1 ;;
+        esac
+        printf '!!%s: %s\n' "mrgrctrnl" "$*"
+        exit "$ec"
+}
+
+config="${XDG_CONFIG_HOME:=$HOME/.config}/mrgrctrnl/config"
+pidf=/tmp/mrgrctrnl.pid
+
+while getopts hc: opt; do
+        case "$opt" in
+                h) usage ;;
+                c) config="$OPTARG" ;;
+                \?) usage 2 ;;
+                *) usage 2 ;;
+        esac
+done
+shift "$((OPTIND - 1))"
+
+[ -f "$config" ] || die "Need a config! Edit $config"
+[ -e "$pidf" ] && {
+        while read -r pid; do
+                kill "$pid"
+        done < "$pidf"
+        rm "$pidf"
+}
+
+while read -r machine user local remote
+do
+        while :
+        do
+                ssh -N "$user@$machine" -L "$local:$remote"
+                echo "$!" >> "$pidf"
+                sleep 3
+        done &
+done < "$config" 
+
+wait