From ed82584f872b70a77696bebea86c0f66adc85620 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Olivier=20Cochard-Labb=C3=A9?= <olivier@cochard.me>
Date: Tue, 29 Aug 2017 00:39:41 +0200
Subject: [PATCH] Add FreeBSD support and remove bashisms from launch.sh

---
 utils/launch.sh | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/utils/launch.sh b/utils/launch.sh
index 9e650e42..f11b0582 100755
--- a/utils/launch.sh
+++ b/utils/launch.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/sh
 
 # Copyright 2016 Joel Martin
 # Copyright 2016 Solly Ross
@@ -36,6 +36,7 @@ CERT=""
 WEB=""
 proxy_pid=""
 SSLONLY=""
+PORTUSED=false
 
 die() {
     echo "$*"
@@ -73,8 +74,12 @@ done
 which netstat >/dev/null 2>&1 \
     || die "Must have netstat installed"
 
-netstat -ltn | grep -qs ":${PORT} .*LISTEN" \
-    && die "Port ${PORT} in use. Try --listen PORT"
+case $(uname -s) in
+   "FreeBSD") netstat -lan | grep -qs ".${PORT} .*LISTEN" && PORTUSED=true ;;
+   "Linux") netstat -ltn | grep -qs ":${PORT} .*LISTEN" && PORTUSED=true ;;
+   *) break ;;
+   esac
+($PORTUSED) && die "Port ${PORT} in use. Try --listen PORT"
 
 trap "cleanup" TERM QUIT INT EXIT
 
@@ -111,10 +116,10 @@ else
 fi
 
 # try to find websockify (prefer local, try global, then download local)
-if [[ -e ${HERE}/websockify ]]; then
+if [ -e ${HERE}/websockify ]; then
     WEBSOCKIFY=${HERE}/websockify/run
 
-    if [[ ! -x $WEBSOCKIFY ]]; then
+    if [ ! -x $WEBSOCKIFY ]; then
         echo "The path ${HERE}/websockify exists, but $WEBSOCKIFY either does not exist or is not executable."
         echo "If you intended to use an installed websockify package, please remove ${HERE}/websockify."
         exit 1
@@ -124,12 +129,12 @@ if [[ -e ${HERE}/websockify ]]; then
 else
     WEBSOCKIFY=$(which websockify 2>/dev/null)
 
-    if [[ $? -ne 0 ]]; then
+    if [ $? -ne 0 ]; then
         echo "No installed websockify, attempting to clone websockify..."
         WEBSOCKIFY=${HERE}/websockify/run
         git clone https://github.com/novnc/websockify ${HERE}/websockify
 
-        if [[ ! -e $WEBSOCKIFY ]]; then
+        if [ ! -e $WEBSOCKIFY ]; then
             echo "Unable to locate ${HERE}/websockify/run after downloading"
             exit 1
         fi