From 4e04bee9152657a33a787e41625ed37ea0f4380d Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Tue, 5 Jul 2016 16:01:31 +0200
Subject: contrib: organize example scripts and add synergy

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 contrib/ncat-client-server/README    | 16 ++++++++++++++++
 contrib/ncat-client-server/client.sh | 20 ++++++++++++++++++++
 contrib/ncat-client-server/server.sh | 14 ++++++++++++++
 3 files changed, 50 insertions(+)
 create mode 100644 contrib/ncat-client-server/README
 create mode 100755 contrib/ncat-client-server/client.sh
 create mode 100755 contrib/ncat-client-server/server.sh

(limited to 'contrib/ncat-client-server')

diff --git a/contrib/ncat-client-server/README b/contrib/ncat-client-server/README
new file mode 100644
index 0000000..fd3088a
--- /dev/null
+++ b/contrib/ncat-client-server/README
@@ -0,0 +1,16 @@
+                === IMPORTANT NOTE ===
+
+Do not use these scripts in production. They are simply a
+demonstration of how easy the `wg(8)` tool is at the command
+line, but by no means should you actually attempt to use
+these. They are horribly insecure and defeat the purpose
+of WireGuard.
+
+                     STAY AWAY!
+
+Distros: do not distribute these with your packages.
+
+
+
+That all said, this is a pretty cool example of just how
+darn easy WireGuard can be.
diff --git a/contrib/ncat-client-server/client.sh b/contrib/ncat-client-server/client.sh
new file mode 100755
index 0000000..fbae46a
--- /dev/null
+++ b/contrib/ncat-client-server/client.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+set -e
+[[ $UID == 0 ]] || { echo "You must be root to run this."; exit 1; }
+umask 077
+trap 'rm -f /tmp/wg_private_key' EXIT INT TERM
+exec 3<>/dev/tcp/demo.wireguard.io/42912
+wg genkey | tee /tmp/wg_private_key | wg pubkey >&3
+IFS=: read -r status server_pubkey server_port internal_ip <&3
+[[ $status == OK ]]
+ip link del dev wg0 2>/dev/null || true
+ip link add dev wg0 type wireguard
+wg set wg0 private-key /tmp/wg_private_key peer "$server_pubkey" allowed-ips 0.0.0.0/0 endpoint "demo.wireguard.io:$server_port"
+ip address add "$internal_ip"/24 dev wg0
+ip link set up dev wg0
+if [ "$1" == "default-route" ]; then
+	host="$(wg show wg0 endpoints | sed -n 's/.*\t\(.*\):.*/\1/p')"
+	ip route add $(ip route get $host | sed '/ via [0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}/{s/^\(.* via [0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\).*/\1/}' | head -n 1) 2>/dev/null || true
+	ip route add 0/1 dev wg0
+	ip route add 128/1 dev wg0
+fi
diff --git a/contrib/ncat-client-server/server.sh b/contrib/ncat-client-server/server.sh
new file mode 100755
index 0000000..e37861f
--- /dev/null
+++ b/contrib/ncat-client-server/server.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+if [[ -z $NCAT_REMOTE_ADDR ]]; then
+	ip link del dev wg0 2>/dev/null
+	set -e
+	ip link add dev wg0 type wireguard
+	ip address add 192.168.4.1/24 dev wg0
+	wg set wg0 private-key <(wg genkey) listen-port 12912
+	ip link set up dev wg0
+	exec ncat -e "$(readlink -f "$0")" -k -l -p 42912 -v
+fi
+read -r public_key
+[[ $(wg show wg0 | grep peer | wc -l) -ge 253 ]] && wg set wg0 peer $(wg show wg0 latest-handshakes | sort -k 2 -b -n | head -n 1 | cut -f 1) remove
+next_ip=$(all="$(wg show wg0 allowed-ips)"; for ((i=2; i<=254; i++)); do ip="192.168.4.$i"; [[ $all != *$ip/32* ]] && echo $ip && break; done)
+wg set wg0 peer "$public_key" allowed-ips $next_ip/32 2>/dev/null && echo "OK:$(wg show wg0 private-key | wg pubkey):$(wg show wg0 listen-port):$next_ip" || echo ERROR
-- 
cgit v1.2.3-59-g8ed1b