58 lines
1.3 KiB
Plaintext
58 lines
1.3 KiB
Plaintext
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#!/usr/bin/env bash
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set -eu
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DIR=$(cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd)
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MAC_ADDRESS_FILE=${DIR}/tinc-macaddr
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has() {
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command -v "$1" >/dev/null 2>&1
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}
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die() {
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echo $1 &>2
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exit 1
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}
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set_mac() {
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local interface=$1
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local mac_address=$2
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if has ifconfig; then
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ifconfig "$interface" down
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if [[ "$OSTYPE" == "linux-gnu" ]]; then
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ifconfig "$interface" hw ether "$mac_address"
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else
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ifconfig "$interface" ether "$mac_address"
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fi
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elif has ip; then
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ip link set dev "$interface" down
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ip link set dev "$interface" address "$mac_address"
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else
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die "no suitable program found to configure the network interface, need iproute2 or ifconfig"
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fi
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}
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start_dhcp() {
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local interface=$1
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if has dhcpcd; then
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dhcpcd "$interface"
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elif has dhclient; then
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dhclient "$interface"
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elif [[ "$OSTYPE" == "darwin"* ]]; then # TODO
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untested
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ipconfig set "$interface" DHCP
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else
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die "no suitable dhcp program found, need dhcpcd or dhclient"
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fi
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}
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[ -z "${INTERFACE:-}" ] && die "no INTERFACE environment variable set"
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if [ ! -f "$MAC_ADDRESS_FILE" ]; then
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die "${MAC_ADDRESS_FILE} does not exists. Generate it with ./tinc-generate-mac"
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fi
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read -r MAC_ADDRESS <"$MAC_ADDRESS_FILE"
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set_mac "$INTERFACE" "$MAC_ADDRESS"
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start_dhcp "$INTERFACE"
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