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| 1 | +#!/bin/bash |
| 2 | +# SPDX-License-Identifier: GPL-2.0 |
| 3 | +# Copyright (C) 2020-2025 OpenVPN, Inc. |
| 4 | +# |
| 5 | +# Author: Antonio Quartulli <antonio@openvpn.net> |
| 6 | + |
| 7 | +UDP_PEERS_FILE=${UDP_PEERS_FILE:-udp_peers.txt} |
| 8 | +TCP_PEERS_FILE=${TCP_PEERS_FILE:-tcp_peers.txt} |
| 9 | +OVPN_CLI=${OVPN_CLI:-./ovpn-cli} |
| 10 | +ALG=${ALG:-aes} |
| 11 | +PROTO=${PROTO:-UDP} |
| 12 | +FLOAT=${FLOAT:-0} |
| 13 | + |
| 14 | +create_ns() { |
| 15 | + ip netns add peer${1} |
| 16 | +} |
| 17 | + |
| 18 | +setup_ns() { |
| 19 | + MODE="P2P" |
| 20 | + |
| 21 | + if [ ${1} -eq 0 ]; then |
| 22 | + MODE="MP" |
| 23 | + for p in $(seq 1 ${NUM_PEERS}); do |
| 24 | + ip link add veth${p} netns peer0 type veth peer name veth${p} netns peer${p} |
| 25 | + |
| 26 | + ip -n peer0 addr add 10.10.${p}.1/24 dev veth${p} |
| 27 | + ip -n peer0 link set veth${p} up |
| 28 | + |
| 29 | + ip -n peer${p} addr add 10.10.${p}.2/24 dev veth${p} |
| 30 | + ip -n peer${p} link set veth${p} up |
| 31 | + done |
| 32 | + fi |
| 33 | + |
| 34 | + ip netns exec peer${1} ${OVPN_CLI} new_iface tun${1} $MODE |
| 35 | + ip -n peer${1} addr add ${2} dev tun${1} |
| 36 | + ip -n peer${1} link set tun${1} up |
| 37 | +} |
| 38 | + |
| 39 | +add_peer() { |
| 40 | + if [ "${PROTO}" == "UDP" ]; then |
| 41 | + if [ ${1} -eq 0 ]; then |
| 42 | + ip netns exec peer0 ${OVPN_CLI} new_multi_peer tun0 1 ${UDP_PEERS_FILE} |
| 43 | + |
| 44 | + for p in $(seq 1 ${NUM_PEERS}); do |
| 45 | + ip netns exec peer0 ${OVPN_CLI} new_key tun0 ${p} 1 0 ${ALG} 0 \ |
| 46 | + data64.key |
| 47 | + done |
| 48 | + else |
| 49 | + ip netns exec peer${1} ${OVPN_CLI} new_peer tun${1} ${1} 1 10.10.${1}.1 1 |
| 50 | + ip netns exec peer${1} ${OVPN_CLI} new_key tun${1} ${1} 1 0 ${ALG} 1 \ |
| 51 | + data64.key |
| 52 | + fi |
| 53 | + else |
| 54 | + if [ ${1} -eq 0 ]; then |
| 55 | + (ip netns exec peer0 ${OVPN_CLI} listen tun0 1 ${TCP_PEERS_FILE} && { |
| 56 | + for p in $(seq 1 ${NUM_PEERS}); do |
| 57 | + ip netns exec peer0 ${OVPN_CLI} new_key tun0 ${p} 1 0 \ |
| 58 | + ${ALG} 0 data64.key |
| 59 | + done |
| 60 | + }) & |
| 61 | + sleep 5 |
| 62 | + else |
| 63 | + ip netns exec peer${1} ${OVPN_CLI} connect tun${1} ${1} 10.10.${1}.1 1 \ |
| 64 | + data64.key |
| 65 | + fi |
| 66 | + fi |
| 67 | +} |
| 68 | + |
| 69 | +cleanup() { |
| 70 | + # some ovpn-cli processes sleep in background so they need manual poking |
| 71 | + killall $(basename ${OVPN_CLI}) 2>/dev/null || true |
| 72 | + |
| 73 | + # netns peer0 is deleted without erasing ifaces first |
| 74 | + for p in $(seq 1 10); do |
| 75 | + ip -n peer${p} link set tun${p} down 2>/dev/null || true |
| 76 | + ip netns exec peer${p} ${OVPN_CLI} del_iface tun${p} 2>/dev/null || true |
| 77 | + done |
| 78 | + for p in $(seq 1 10); do |
| 79 | + ip -n peer0 link del veth${p} 2>/dev/null || true |
| 80 | + done |
| 81 | + for p in $(seq 0 10); do |
| 82 | + ip netns del peer${p} 2>/dev/null || true |
| 83 | + done |
| 84 | +} |
| 85 | + |
| 86 | +if [ "${PROTO}" == "UDP" ]; then |
| 87 | + NUM_PEERS=${NUM_PEERS:-$(wc -l ${UDP_PEERS_FILE} | awk '{print $1}')} |
| 88 | +else |
| 89 | + NUM_PEERS=${NUM_PEERS:-$(wc -l ${TCP_PEERS_FILE} | awk '{print $1}')} |
| 90 | +fi |
| 91 | + |
| 92 | + |
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