From cb28b57e09f4640b7ebbfaa7c2959cd3e5146208 Mon Sep 17 00:00:00 2001
From: Nyr <me@nyr.be>
Date: Thu, 19 Apr 2018 21:25:18 +0200
Subject: [PATCH] Remove wget dependency in CentOS

curl is always included with CentOS and wget is always included with
Debian/Ubuntu. So it was useless to install wget in CentOS like we were
doing for those cases when it wasn't already installed. Now curl will
be used instead.
---
 openvpn-install.sh | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/openvpn-install.sh b/openvpn-install.sh
index 7faedd6..8d048d6 100644
--- a/openvpn-install.sh
+++ b/openvpn-install.sh
@@ -219,19 +219,20 @@ else
 	else
 		# Else, the distro is CentOS
 		yum install epel-release -y
-		yum install openvpn iptables openssl wget ca-certificates -y
+		yum install openvpn iptables openssl ca-certificates -y
 	fi
 	# An old version of easy-rsa was available by default in some openvpn packages
 	if [[ -d /etc/openvpn/easy-rsa/ ]]; then
 		rm -rf /etc/openvpn/easy-rsa/
 	fi
 	# Get easy-rsa
-	wget -O ~/EasyRSA-3.0.4.tgz "https://github.com/OpenVPN/easy-rsa/releases/download/v3.0.4/EasyRSA-3.0.4.tgz"
-	tar xzf ~/EasyRSA-3.0.4.tgz -C ~/
+	EASYRSAURL='https://github.com/OpenVPN/easy-rsa/releases/download/v3.0.4/EasyRSA-3.0.4.tgz'
+	wget -O ~/easyrsa.tgz "$EASYRSAURL" 2>/dev/null || curl -Lo ~/easyrsa.tgz "$EASYRSAURL"
+	tar xzf ~/easyrsa.tgz -C ~/
 	mv ~/EasyRSA-3.0.4/ /etc/openvpn/
 	mv /etc/openvpn/EasyRSA-3.0.4/ /etc/openvpn/easy-rsa/
 	chown -R root:root /etc/openvpn/easy-rsa/
-	rm -rf ~/EasyRSA-3.0.4.tgz
+	rm -rf ~/easyrsa.tgz
 	cd /etc/openvpn/easy-rsa/
 	# Create the PKI, set up the CA, the DH params and the server + client certificates
 	./easyrsa init-pki
@@ -375,7 +376,7 @@ exit 0' > $RCLOCAL
 		fi
 	fi
 	# Try to detect a NATed connection and ask about it to potential LowEndSpirit users
-	EXTERNALIP=$(wget -4qO- "http://whatismyip.akamai.com/")
+	EXTERNALIP=$(wget -4qO- "http://whatismyip.akamai.com/" 2>/dev/null || curl -4s "http://whatismyip.akamai.com/")
 	if [[ "$IP" != "$EXTERNALIP" ]]; then
 		echo ""
 		echo "Looks like your server could be behind a NAT!"