#!/bin/bash
set -u
set -e
 
AddressAwg=10.0.0.1/32  # Adresse VPN Wireguard extremite A
EndpointA=172.16.0.112  # Adresse extremite A
PortA=51820             # Port ecoute extremite A
AddressBwg=10.0.0.2/32  # Adresse VPN Wireguard extremite B
EndpointB=172.16.0.111  # Adresse extremite B
PortB=51820             # Port ecoute extremite B
AddressCwg=10.0.0.3/32  # Adresse VPN Wireguard extremite C
EndpointC=172.16.0.110  # Adresse extremite C
PortC=51820             # Port ecoute extremite C
AddressDwg=10.0.0.3/32  # Adresse VPN Wireguard extremite D
EndpointD=10.121.38.35  # Adresse extremite D
PortD=61820             # Port ecoute extremite D

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

wg genkey > endpoint-d.key
wg pubkey < endpoint-d.key > endpoint-d.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)
PKD=$(cat endpoint-d.key)
pKD=$(cat endpoint-d.pub)

cat <<FINI > wg0-1.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

# remote settings for Endpoint D
[Peer]
PublicKey = $pKD
Endpoint = ${EndpointD}:$PortD
AllowedIPs = $AddressDwg

FINI
 
 
cat <<FINI > wg0-2.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 > wg0-3.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

cat <<FINI > wg0-4.conf
# local settings for Endpoint D
[Interface]
PrivateKey = $PKD
Address = $AddressDwg
ListenPort = $PortD
 
# remote settings for Endpoint A
[Peer]
PublicKey = $pKA
Endpoint = ${EndpointA}:$PortA
AllowedIPs = $AddressAwg
FINI