system/utmps: new package

6 files changed, 120 insertions, 0 deletions

diff --git a/system/utmps/APKBUILD b/system/utmps/APKBUILD
new file mode 100644
index 000000000..dd9c21299
--- /dev/null
+++ b/system/utmps/APKBUILD
@@ -0,0 +1,60 @@
+# Contributor: Laurent Bercot <ska-devel@skarnet.org>
+# Maintainer: Laurent Bercot <ska-devel@skarnet.org>
+pkgname=utmps
+pkgver=0.0.1.0
+pkgrel=0
+pkgdesc="A secure utmp/wtmp implementation"
+url="https://skarnet.org/software/$pkgname/"
+arch="all"
+license="ISC"
+depends="execline s6"
+depends_dev="skalibs-dev"
+makedepends="skalibs-dev"
+options="!check"
+subpackages="$pkgname-dev $pkgname-doc $pkgname-openrc"
+source="https://skarnet.org/software/$pkgname/$pkgname-$pkgver.tar.gz
+	$pkgname.initd
+	utmpd.run
+	wtmpd.run"
+builddir="$srcdir/$pkgname-$pkgver"
+install="$pkgname.pre-install $pkgname.pre-upgrade"
+
+build() {
+	cd "$builddir"
+	./configure \
+		--enable-shared \
+		--enable-static \
+		--disable-allstatic \
+		--libdir=/usr/lib \
+		--libexecdir="/lib/$pkgname" \
+		--with-dynlib=/lib
+	make
+}
+
+package() {
+	cd "$builddir"
+	make DESTDIR="$pkgdir" install
+        mkdir -p "$pkgdir/etc/init.d" "$pkgdir/var/lib/$pkgname/services/utmpd" "$pkgdir/var/lib/$pkgname/services/wtmpd"
+        cp -f "$srcdir/$pkgname.initd" "$pkgdir/etc/init.d/$pkgname"
+        cp -f "$srcdir/utmpd.run" "$pkgdir/var/lib/$pkgname/services/utmpd/run"
+	echo 3 > "$pkgdir/var/lib/$pkgname/services/utmpd/notification-fd"
+	s6-mkfifodir -g0 -- "$pkgdir/var/lib/$pkgname/services/utmpd/event"
+        cp -f "$srcdir/wtmpd.run" "$pkgdir/var/lib/$pkgname/services/wtmpd/run"
+	echo 3 > "$pkgdir/var/lib/$pkgname/services/wtmpd/notification-fd"
+	s6-mkfifodir -g 0 -- "$pkgdir/var/lib/$pkgname/services/wtmpd/event"
+        chmod 0755 "$pkgdir/etc/init.d/$pkgname" "$pkgdir/var/lib/$pkgname/services/utmpd/run" "$pkgdir/var/lib/$pkgname/services/wtmpd/run"
+	mkdir -m 0700 "$pkgdir/var/lib/$pkgname/services/utmpd/supervise" "$pkgdir/var/lib/$pkgname/services/wtmpd/supervise"
+	dd if=/dev/zero of="$pkgdir/var/lib/$pkgname/services/utmpd/supervise/status" bs=35 count=1
+	dd if=/dev/zero of="$pkgdir/var/lib/$pkgname/services/wtmpd/supervise/status" bs=35 count=1
+}
+
+doc() {
+	default_doc
+	mkdir -p "$subpkgdir/usr/share/doc"
+	cp -a "$builddir/doc" "$subpkgdir/usr/share/doc/$pkgname"
+}
+
+sha512sums="289d745647c01e550b37198c88d6ed5c3a80b3278ff85d6ce4ec066a044877aa7dba85509956dc469169276b606b2d5ac8ea7284b7f043ff798b3c23214ac8a8  utmps-0.0.1.0.tar.gz
+437d0c52ef1ecd23775990225647c2a6ca53691fb5688ffa866a0e6db177a08fe465f2e683e8b98ba668d8ddcd4ffa0fe3939f23ded276f4ca7acaa2553b10e6  utmps.initd
+0ec30284c64c6ea9f25142c5f4a643bd48b137fe85781b650104f5137ffa4dfc35ca7be3e41e3acd3403ebe1d8c5378073afa4e2f3607d3d794fcd9f98ed51c4  utmpd.run
+cba4f2ec3b8f5becf3ae57eecf584745d783046ee6cf5d116322421ad5ffd074d2955da22d31d2b5b1d05f906378aae92f221d2ac95ac21b54a361fbdc0566e7  wtmpd.run"
diff --git a/system/utmps/utmpd.run b/system/utmps/utmpd.run
new file mode 100644
index 000000000..47bc824a2
--- /dev/null
+++ b/system/utmps/utmpd.run
@@ -0,0 +1,8 @@
+#!/bin/execlineb -P
+
+fdmove -c 2 1
+s6-setuidgid utmp
+cd /run/utmps
+fdmove 1 3
+s6-ipcserver -1 -- .utmpd-socket
+utmps-utmpd
diff --git a/system/utmps/utmps.initd b/system/utmps/utmps.initd
new file mode 100644
index 000000000..db4570031
--- /dev/null
+++ b/system/utmps/utmps.initd
@@ -0,0 +1,32 @@
+#!/sbin/openrc-run
+# Copyright 2018 Laurent Bercot
+# Distributed under the terms of the ISC License.
+#
+# OpenRC is only used here to trigger the s6 mechanisms.
+
+depend() {
+	need s6
+}
+
+start() {
+	ebegin "Starting utmpd and wtmpd services"
+	mkdir -p -m 0755 /run/utmps
+	chown utmp:utmp /run/utmps
+
+	# OpenRC has no readiness notification framework, so it can run this before s6 is ready.
+	# To avoid the race (yes, I have hit it), do a polling check here.
+	# If you want to avoid unnecessary delays, switch to a real service manager like s6-rc.
+	until test -e /run/service/.s6-svscan/control ; do sleep 1 ; done
+
+	ln -nsf /var/lib/utmps/services/utmpd /run/service/utmpd
+	ln -nsf /var/lib/utmps/services/wtmpd /run/service/wtmpd
+	s6-svlisten -U -t 5000 -- /var/lib/utmps/services/utmpd /var/lib/utmps/services/wtmpd "" s6-svscanctl -an /run/service
+	eend $?
+}
+
+stop() {
+	ebegin "Stopping utmpd and wtmpd services"
+	rm -f /run/service/utmpd /run/service/wtmpd
+	s6-svlisten -d -t 5000 -- /var/lib/utmps/services/utmpd /var/lib/utmps/services/wtmpd "" s6-svscanctl -an /run/service
+	eend $?
+}
diff --git a/system/utmps/utmps.pre-install b/system/utmps/utmps.pre-install
new file mode 100644
index 000000000..6db960686
--- /dev/null
+++ b/system/utmps/utmps.pre-install
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+addgroup -S utmp 2>/dev/null
+adduser -S -D -H -s /bin/false -G utmp -g utmp utmp 2>/dev/null
+echo 'Run "rc-update add s6 default; rc-update add utmps default" to automatically start the utmpd and wtmpd services at boot time.' 1>&2
+exit 0
diff --git a/system/utmps/utmps.pre-upgrade b/system/utmps/utmps.pre-upgrade
new file mode 100644
index 000000000..6db960686
--- /dev/null
+++ b/system/utmps/utmps.pre-upgrade
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+addgroup -S utmp 2>/dev/null
+adduser -S -D -H -s /bin/false -G utmp -g utmp utmp 2>/dev/null
+echo 'Run "rc-update add s6 default; rc-update add utmps default" to automatically start the utmpd and wtmpd services at boot time.' 1>&2
+exit 0
diff --git a/system/utmps/wtmpd.run b/system/utmps/wtmpd.run
new file mode 100644
index 000000000..ab5a40641
--- /dev/null
+++ b/system/utmps/wtmpd.run
@@ -0,0 +1,8 @@
+#!/bin/execlineb -P
+
+fdmove -c 2 1
+s6-setuidgid utmp
+cd /run/utmps
+fdmove 1 3
+s6-ipcserver -1 -- .wtmpd-socket
+utmps-wtmpd