From 1f5c56d2de26395ebaec3f8086004b0387273ced Mon Sep 17 00:00:00 2001
From: Case Duckworth
Date: Sun, 12 Apr 2020 12:13:19 -0500
Subject: Add dry_run flag

---
 mrgrctrnl | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/mrgrctrnl b/mrgrctrnl
index 131894e..4f090d1 100755
--- a/mrgrctrnl
+++ b/mrgrctrnl
@@ -9,10 +9,11 @@ usage()
 {
 	cat <<-END
 	mrgrctrnl: make magic ssh tunnels
-	usage: mrgrctrnl [-h] [-c CONF]
+	usage: mrgrctrnl [-h] [-c CONF] [-d]
 
 	-h		show this help
 	-c CONF	use config file CONF.
+	-d		do a dry run: don't actually tunnel
 	.		default: \$XDG_CONFIG_HOME/mrgrctrnl/config
 
 	END
@@ -32,11 +33,13 @@ die()
 
 config="${XDG_CONFIG_HOME:=$HOME/.config}/mrgrctrnl/config"
 pidf=/tmp/mrgrctrnl.pid
+dry_run=false;
 
-while getopts hc: opt; do
+while getopts hc:d opt; do
 	case "$opt" in
 		h) usage ;;
 		c) config="$OPTARG" ;;
+		d) dry_run=true ;;
 		\?) usage 2 ;;
 		*) usage 2 ;;
 	esac
@@ -44,7 +47,7 @@ done
 shift "$((OPTIND - 1))"
 
 [ -f "$config" ] || die "Need a config! Edit $config"
-[ -e "$pidf" ] && {
+[ -e "$pidf" ] && ! "$dry_run" && {
 	while read -r pid; do
 		kill "$pid"
 	done < "$pidf"
@@ -54,6 +57,13 @@ shift "$((OPTIND - 1))"
 awk '{sub(/#.*$/,"");print}' "$config" |
 while read -r machine user local remote
 do
+	[ -z "$machine" ] || [ -z "$user" ] || 
+	[ -z "$local" ] || [ -z "$remote" ] &&
+	continue
+
+	echo ssh -N "$user@$machine" -L "$local:$remote"
+
+	$dry_run || 
 	while :
 	do
 		ssh -N "$user@$machine" -L "$local:$remote"
-- 
cgit 1.4.1-21-gabe81