diff options
| -rw-r--r-- | PKGBUILD | 29 | ||||
| -rw-r--r-- | ipset.confd | 16 | ||||
| -rw-r--r-- | ipset.initd | 94 |
3 files changed, 139 insertions, 0 deletions
diff --git a/PKGBUILD b/PKGBUILD new file mode 100644 index 0000000..8facfab --- /dev/null +++ b/PKGBUILD @@ -0,0 +1,29 @@ +# Maintainer: jc_gargma <jc_gargma@iserlohn-fortress.net> + +# # I maintain this because: +# Artix lacks this init script entirely + +_pkgname=ipset +pkgname=${_pkgname}-openrc +pkgver=20211217 +pkgrel=1 +pkgdesc="OpenRC ${_pkgname} init script" +arch=('any') +url="https://library.iserlohn-fortress.net/ipset-openrc.git/" +license=('GPL2') +groups=('openrc-galaxy') +backup=( + "etc/conf.d/${_pkgname}" + ) +source=( + "${_pkgname}.initd" + "${_pkgname}.confd" + ) +b2sums=('9c376e1a5083829a1fc40bfcca192cad19644c8ba585c29018a55837c0788127963071de2a94a251288ee19a7308ba4d7d80f48f3bc1aba497489872f9810479' + 'fb1b728c12953cb6d5009469eaeeb9e58e01dd76b6849ad554d545bab417e8614d6417be52c2079b961bc66e355cf27c697ac3b2e0fcd823f978c39d14c66264') + +package() { +depends=('openrc' "${_pkgname}") + install -Dm755 ${srcdir}/${_pkgname}.initd ${pkgdir}/etc/init.d/${_pkgname} + install -Dm644 ${srcdir}/${_pkgname}.confd ${pkgdir}/etc/conf.d/${_pkgname} +} diff --git a/ipset.confd b/ipset.confd new file mode 100644 index 0000000..9fe42e9 --- /dev/null +++ b/ipset.confd @@ -0,0 +1,16 @@ +# /etc/conf.d/ipset + +# Location in which ipset initscript will save set rules on +# service shutdown +IPSET_SAVE="/var/lib/ipset/rules-save" + +# Save state on stopping ipset +SAVE_ON_STOP="yes" + +# If you need to log iptables messages as soon as iptables starts, +# AND your logger does NOT depend on the network, then you may wish +# to uncomment the next line. +# If your logger depends on the network, and you uncomment this line +# you will create an unresolvable circular dependency during startup. +# After commenting or uncommenting this line, you must run 'rc-update -u'. +#rc_use="logger" diff --git a/ipset.initd b/ipset.initd new file mode 100644 index 0000000..32ab581 --- /dev/null +++ b/ipset.initd @@ -0,0 +1,94 @@ +#!/sbin/openrc-run +# Copyright 1999-2013 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 + +extra_commands="save" +extra_started_commands="reload" + +IPSET_SAVE=${IPSET_SAVE:-/var/lib/ipset/rules-save} + +depend() { + before iptables ip6tables +} + +checkconfig() { + if [ ! -f "${IPSET_SAVE}" ] ; then + eerror "Not starting ${SVCNAME}. First create some rules then run:" + eerror "/etc/init.d/${SVCNAME} save" + return 1 + fi + return 0 +} + +start() { + checkconfig || return 1 + ebegin "Loading ipset session" + ipset restore < "${IPSET_SAVE}" + eend $? +} + +stop() { + # check if there are any references to current sets + + if ! ipset list | gawk ' + ($1 == "References:") { refcnt += $2 } + ($1 == "Type:" && $2 == "list:set") { set = 1 } + (scan) { if ($0 != "") setcnt++; else { scan = 0; set = 0 } } + (set && $1 == "Members:") {scan = 1} + END { if ((refcnt - setcnt) > 0) exit 1 } + '; then + eerror "ipset is in use, can't stop" + return 1 + fi + + if [ "${SAVE_ON_STOP}" = "yes" ] ; then + save || return 1 + fi + + ebegin "Removing kernel IP sets" + ipset flush + ipset destroy + eend $? +} + +reload() { + ebegin "Reloading ipsets" + + # Loading sets from a save file is only additive (there is no + # automatic flushing or replacing). And, we can not remove sets + # that are currently used in existing iptables rules. + # + # Instead, we create new temp sets for any set that is already + # in use, and then atomically swap them into place. + # + # XXX: This does not clean out previously used ipsets that are + # not in the new saved policy--it can't, because they may still + # be referenced in the current iptables rules. + + # Build a list of all currently used sets (if any). + running_ipset_list=$(ipset save | gawk '/^create/{printf "%s ",$2}') + running_ipset_list="${running_ipset_list% }" + # Build a regular expression that matches those set names. + running_ipset_list_regex="$(echo "$running_ipset_list" | tr -s ' ' '|' )" + + # Load up sets from the save file, but rename any set that already + # exists to a temporary name that we will swap later. + if ! cat ${IPSET_SAVE} | sed -r "s/^(create|add) (${running_ipset_list_regex}) /\1 \2_atomic_temp /" | ipset restore ; then + eend $? "Failed to load new ipsets" + fi + + # Now for every set name that currently exists, atomically swap it + # with the temporary new one we created, and then destroy the old set. + for ipset_name in ${running_ipset_list} ; do + ipset swap ${ipset_name} ${ipset_name}_atomic_temp || eend $? "Failed to swap in new ipset $ipset_name" + ipset destroy ${ipset_name}_atomic_temp || eend $? "Failed to delete obsolete ipset ${ipset_name}_atomic_temp" + done + eend 0 +} + +save() { + ebegin "Saving ipset session" + checkpath --file --mode 0600 "${IPSET_SAVE}" + ipset save > "${IPSET_SAVE}" + eend $? +} |