#!/bin/bash
set -u
set -e
 
AddressAwg=10.0.0.1/32  # Adresse VPN Wireguard extremite A
EndpointA=10.121.38.70  # Adresse extremite A
PortA=51820             # Port ecoute extremite A
AddressBwg=10.0.0.2/32  # Adresse VPN Wireguard extremite B
EndpointB=192.168.1.82  # Adresse extremite B
PortB=51820             # Port ecoute extremite B
AddressCwg=10.0.0.3/32
EndpointC=x.y.z.t
PortC=51820

umask 077 ;  
wg genkey > endpoint-a.key
wg pubkey < endpoint-a.key > endpoint-a.pub
 
wg genkey > endpoint-b.key
wg pubkey < endpoint-b.key > endpoint-b.pub
 
wg genkey > endpoint-c.key
wg pubkey < endpoint-c.key > endpoint-c.pub
PKA=$(cat endpoint-a.key)
pKA=$(cat endpoint-a.pub)
PKB=$(cat endpoint-b.key)
pKB=$(cat endpoint-b.pub)
PKC=$(cat endpoint-c.key)
pKC=$(cat endpoint-c.pub)


cat <<FINI > wg0-a.conf
# local settings for Endpoint A
[Interface]
PrivateKey = $PKA
Address = $AddressAwg
ListenPort = $PortA
 
# remote settings for Endpoint B
[Peer]
PublicKey = $pKB
#Endpoint = ${EndpointB}:$PortB
AllowedIPs = $AddressBwg
 
# remote settings for Endpoint C
[Peer]
PublicKey = $pKC
#Endpoint = ${EndpointC}:$PortC
AllowedIPs = $AddressCwg
 
FINI
cat <<FINI > wg0-b.conf
# local settings for Endpoint B
[Interface]
PrivateKey = $PKB
Address = $AddressBwg
ListenPort = $PortB
 
# remote settings for Endpoint A
[Peer]
PublicKey = $pKA
Endpoint = ${EndpointA}:$PortA
AllowedIPs = $AddressAwg

FINI
cat <<FINI > wg0-c.conf
# local settings for Endpoint C
[Interface]
PrivateKey = $PKC
Address = $AddressCwg
ListenPort = $PortC
 
# remote settings for Endpoint A
[Peer]
PublicKey = $pKA
Endpoint = ${EndpointA}:$PortA
AllowedIPs = $AddressAwg

FINI