commit d49adb8f224d9f6cf4992df5b275c23e2f62729d
Author: Alexandre Chazal <alexandre.chazal@epita.fr>
Date:   Tue Oct 12 16:20:31 2021 +0200

    init

diff --git a/del-wg.sh b/del-wg.sh
new file mode 100644
index 0000000..6ab5a30
--- /dev/null
+++ b/del-wg.sh
@@ -0,0 +1,14 @@
+#! /usr/bin/env bash
+
+if [ $# -ne 1 ]; then
+        echo "[!!] I (just) need the base64 pubkey of the target client"
+        exit 1
+fi
+
+# Suppression du pair
+wg set wg0 peer $1 remove
+# Enregistrement de la modification
+wg-quick save wg0
+# Suppression de sa config
+echo "[++] Peer has been removed (if it really existed)"
+echo "[++] Key was : $1"
\ No newline at end of file
diff --git a/new-wg.sh b/new-wg.sh
new file mode 100644
index 0000000..f0bc1a7
--- /dev/null
+++ b/new-wg.sh
@@ -0,0 +1,122 @@
+#! /usr/bin/env bash
+
+function usage()
+{
+        echo "usage: $(basename $0) [-h] [-i interface] [-d nameserver] [-a address]"
+        echo "  -h              show this help message"
+        echo "  -i interface    the targeted wireguard interface"
+        echo "  -d nameserver   the DNS server to put in the client configuration"
+        echo "  -a address      your server public address (IP or DNS)"
+}
+
+function checks()
+{
+        # On regarde si l'interface existe bien
+        if [ ! -f "/etc/wireguard/$interface.conf" ]; then
+                echo "[!!] Given interface $interface does not exist, quitting"
+                exit 2
+        fi
+
+        # Si aucun serveur DNS n'a ete renseigne, on prend le premier du resolv.conf
+        if [ ${#nameserver} -eq 0 ]; then
+                namerserver="$(sed -n -r "s|nameserver (\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}).*|\1|p" /etc/resolv.conf | head -1)"
+        fi
+        # Si aucun nom de domaine ou adresse IP est resignee, on prend le nom de domaine complet
+        # du server
+        if [ ${#serv_addr} -eq 0 ]; then
+                serv_addr="$(hostname -f)"
+        fi
+}
+
+function getIP()
+{
+        # Get available IP from server config
+        lastip="$(sed -n -r "s|AllowedIPs = (\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3}).*|\1 \2 \3 \4|p" "/etc/wireguard/$interface.conf")"
+        lastip="$(echo "$lastip" | sort -n -t ' ' -k 1,1 -k 2,2 -k 3,3 -k 4,4 | tail -1)"
+        # On convertit en hexa
+        newip="$(printf "%02X" $lastip)"
+        # On incremente de 1
+        newip="$(( 0x$newip + 0x1 ))"
+        # Check si on ne tape pas le broadcast
+        if [ $(( $newip & 0xff )) -eq 255 ]; then
+                echo "[!!] No new IP is available, next would be .255"
+                echo "[!!] Last used IP was $lastip"
+                exit 3
+        fi
+        # Reconversion en IP
+        newip="$(printf "%08X" $newip | sed -r 's/(..)/0x\1 /g')"
+        newip="$(printf "%d.%d.%d.%d" $newip)"
+}
+
+# Variables
+interface="wg0"
+nameserver=""
+serv_addr=""
+
+opts=":hida"
+while getopts "$opts" arg; do
+        case "$arg" in
+                h)
+                        usage
+                        exit 0;;
+                d) nameserver="$OPTARG";;
+                i) interface="$OPTARG";;
+                a) serv_addr="$OPTARG";;
+                ?)
+                        echo "[!!] Invalid option: -$OPTARG"
+                        usage
+                        exit 1
+                        ;;
+        esac
+done
+
+# On verifie les parametres
+checks
+
+# On monte l'interface au cas ou
+wg-quick up "$interface" 2> /dev/null
+
+client_confs="/etc/wireguard/clients"
+mkdir -p "$client_confs"
+clientpath="$(mktemp "$client_confs/client.confXXXXXX")"
+
+# On recupere la nouvelle IP
+getIP
+
+echo "[++] New client address = $newip"
+
+# Generation des cles privees et publiques
+serv_pubkey="$(wg show wg0 public-key)"
+client_privkey="$(wg genkey)"
+client_pubkey="$(echo "$client_privkey" | wg pubkey)"
+echo "[++] Client pubkey = $client_pubkey"
+
+# Remplissage de la config client
+cat << EOF > "$clientpath"
+[Interface]
+Address = $newip/32
+PrivateKey = $client_privkey
+DNS = $nameserver
+
+[Peer]
+PublicKey = $serv_pubkey
+Endpoint = $serv_addr:$(sed -n -r "s|ListenPort = (\d+)|\1|p" /etc/wireguard/wg0.conf)
+AllowedIPs = 0.0.0.0/0
+
+EOF
+echo "[++] New client config written in $clientpath"
+# Creation du QRCode
+qrencode -t ansiutf8 "$(cat "$clientpath")"
+
+# Modification de la config serveur
+cat << EOF >> "/etc/wireguard/wg0.conf"
+
+# Added with a script
+[Peer]
+PublicKey = $client_pubkey
+AllowedIPs = $newip/32
+EOF
+echo "[++] Added client to the server"
+
+# Ajout du client a l'interface wireguard
+wg addconf wg0 <(wg-quick strip wg0)
\ No newline at end of file