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65 lines
1.9 KiB
Bash
Executable File
65 lines
1.9 KiB
Bash
Executable File
#! /bin/bash
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#
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# random_port.sh
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# Copyright (C) 2018 Martine Lenders <m.lenders@fu-berlin.de>
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#
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# Distributed under terms of the MIT license.
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#
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if ! command -v kea-dhcp6 > /dev/null; then
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echo -e "\033[31;1mCommand kea-dhcp6 required\033[0m" >&2
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exit 1
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fi
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_sem_ver() {
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major=$(echo "$1" | cut -d. -f1 | sed -e 's/^0\+//' -e 's/^$/0/')
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minor=$(echo "$1" | cut -d. -f2 | sed -e 's/^0\+//' -e 's/^$/0/')
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patch=$(echo "$1" | cut -d. -f3 | sed -e 's/^0\+//' -e 's/^$/0/')
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echo "$(( major << 32 | minor << 8 | patch ))"
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}
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_kea_version_lesser_1_7_10() {
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test "$(_sem_ver "$(kea-dhcp6 -v)")" -lt "$(_sem_ver "1.7.10")"
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return $?
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}
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_dhcpv6_server() {
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TMPDIR="$(mktemp -u | xargs dirname)/${APPLICATION}_kea"
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CONFIG="${TMPDIR}/kea-dhcp6.config"
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# only used `mktemp` with dry-run above to get temp directory name, so we
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# still need to create the directory
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mkdir -p "${TMPDIR}"
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echo "Running kea-dhcpv6 in data directory ${TMPDIR}"
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if [ -f "${TMPDIR}/kea-dhcp6.kea-dhcp6.pid" ]; then
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# Kill Kea instance from potential previous run:w
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kill "$(cat "${TMPDIR}/kea-dhcp6.kea-dhcp6.pid")"
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fi
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sed "s/\"{{\s*env\.IFACE\s*}}\"/\"${IFACE}\"/" "$2" > "${CONFIG}"
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if ! _kea_version_lesser_1_7_10; then
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# Top-level "Logging" config is not supported by Kea >=1.7.10, so move
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# that config to Dhcp6 map, see
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# https://kea.readthedocs.io/en/kea-1.7.10/arm/config.html#json-syntax
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convert_json="$(cat <<EOF
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import json
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with open('$CONFIG') as c:
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config = json.load(c)
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logging = config.pop('Logging', None)
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if logging is not None:
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config['Dhcp6'].update(logging)
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with open('$CONFIG', 'w') as c:
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json.dump(config, c)
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EOF
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)"
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python3 -c "$convert_json"
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fi
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sleep 1 # sleep to let TAP become active
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cd "$TMPDIR" || exit 1
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KEA_PIDFILE_DIR=. KEA_LOCKFILE_DIR=. \
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kea-dhcp6 -p "$1" -c "$CONFIG" &
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}
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_dhcpv6_server "$1" "$2" &
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