From 4fcb86be3764fc0b159b80808cf4934a526b93fb Mon Sep 17 00:00:00 2001
From: sacha <sacha@aquilenet.fr>
Date: Thu, 22 Aug 2024 13:02:37 +0200
Subject: [PATCH] Update wifi-sncf-tgv.sh

check nmap presence
---
 wifi-sncf-tgv.sh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/wifi-sncf-tgv.sh b/wifi-sncf-tgv.sh
index 32d57fc..6f35a3d 100644
--- a/wifi-sncf-tgv.sh
+++ b/wifi-sncf-tgv.sh
@@ -4,9 +4,13 @@
 ### Sacha at aquilenet.fr 20240401
 ### Validate captive portal access
 
+# Put your wifi interface name here
 wifiinterface="wlp170s0"
 tmpfile=/tmp/wifi-tgv.tmp
 
+# Check if we have nmap
+which nmap || echo "Please install nmap" && exit 1
+
 # Get DHCP answears
 nmap --script broadcast-dhcp-discover -e $wifiinterface > $tmpfile
 DNS=$(grep "Domain Name Server" $tmpfile | awk -F: '{gsub (" ", "", $0); print $2}')
@@ -15,6 +19,6 @@ DNS=$(grep "Domain Name Server" $tmpfile | awk -F: '{gsub (" ", "", $0); print $
 echo "Enabling SNCF's Wifi"
 curl --silent --output /dev/null -X POST 'https://wifi.sncf/router/api/connection/activate/auto' --resolve wifi.sncf:443:$DNS
 
-# Optional: Check if we have Internet with perdu.com
+# Optional: Check if we have Internet (& DNS resolution) with perdu.com
 echo -n "Checking Internet Access... "
 curl --silent perdu.com |grep ici &&  echo "Internet is OK !!!" || echo "Internet is KO :((("
\ No newline at end of file