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|
{ config, lib, pkgs, ... }:
let
# XXX cannot use config.build.host.name here because infinite recursion when
# defining krebs.hosts.${host-name}.nets.retiolum.aliases below.
host-name = "xu";
in
# usage:
# echo set_password vnc correcthorze | xu-qemu0-monitor
#
# vncdo -s xu:1 type 'curl init.xu.r' key shift-\\ type sh key return
#
# http://vnc.xu/vnc_auto.html?port=5701&host=xu&password=correcthorze
#
# make [install] system=xu-qemu0 target_host=10.56.0.101
# TODO iptables -A INPUT -p udp -m udp --dport bootps -j ACCEPT
# TODO iptables -A FORWARD -i qemubr0 -s 10.56.0.1/24 -m conntrack --ctstate NEW -j ACCEPT
# TODO iptables -A POSTROUTING -t nat -j MASQUERADE
# TODO iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
# TODO iptables -A INPUT -i qemubr0 -p udp -m udp --dport domain -j ACCEPT
# TODO echo 1 > /proc/sys/net/ipv4/ip_forward
# TODO ifconfig qemubr0 10.56.0.1/24 up
with lib;
{
#networking.wireless.interfaces = [ "wlp3s0" ];
#networking.useNetworkd = true;
#networking.dhcpcd.allowInterfaces = [
# "qemubr0"
#];
#systemd.network.networks.wlp3s0 = {
# matchConfig.name = "wlp3s0";
# networkConfig.Bridge = "qemubr0";
#};
systemd.network.enable = true;
systemd.network.netdevs.qemubr0 = {
netdevConfig = {
Name = "qemubr0";
Kind = "bridge";
};
};
users.groups.qemu-users.gid = genid "qemu-users";
environment.etc."qemu/bridge.conf".text = ''
allow qemubr0
'';
krebs.per-user.tv.packages = [
pkgs.vncdotool
];
users.users.xu-qemu0 = {
createHome = true;
group = "qemu-users";
home = "/home/xu-qemu0";
uid = genid "xu-qemu0";
};
systemd.services.xu-qemu0 = let
in {
after = [ "network.target" "systemd-resolved.service" ];
serviceConfig = {
User = "xu-qemu0";
SyslogIdentifier = "xu-qemu0";
ExecStart = pkgs.writeDash "xu-qemu0" ''
set -efu
${pkgs.coreutils}/bin/mkdir -p "$HOME/tmp"
img=$HOME/tmp/xu-qemu0.raw
if ! test -e "$img"; then
${pkgs.kvm}/bin/qemu-img create "$img" 10G
fi
exec ${pkgs.kvm}/bin/qemu-kvm \
-monitor unix:$HOME/tmp/xu-qemu0.sock,server,nowait \
-boot order=cd \
-cdrom ${pkgs.fetchurl {
url = https://nixos.org/releases/nixos/15.09/nixos-15.09.1012.9fe0c23/nixos-minimal-15.09.1012.9fe0c23-x86_64-linux.iso;
sha256 = "18bc9wrsrjnhj9rya75xliqkl99gxbsk4dmwqivhvwfzb5qb5yp9";
}} \
-m 1024 \
-netdev bridge,br=qemubr0,id=hn0,helper=/var/setuid-wrappers/qemu-bridge-helper \
-net nic,netdev=hn0,id=nic1,macaddr=52:54:00:12:34:56 \
-drive file="$img",format=raw \
-display vnc=:1,websocket=5701,password,lossy \
-name xu-qemu0 \
'';
};
};
system.activationScripts."krebs.setuid.xu-qemu0-monitor" = stringAfter [ "setuid" ] ''
src=${pkgs.execve "xu-qemu0-monitor" {
# TODO toC should handle derivation, then we don't have to "${...}" here
filename = "${pkgs.writeDash "xu-qemu0-monitor" ''
exec ${pkgs.socat}/bin/socat \
stdio \
UNIX-CONNECT:${config.users.users.xu-qemu0.home}/tmp/xu-qemu0.sock \
''}";
}}
dst=${config.security.wrapperDir}/xu-qemu0-monitor
cp "$src" "$dst"
chown xu-qemu0.tv "$dst"
chmod 4710 "$dst"
'';
#TODO krebs.setuid.qemu-bridge-helper = {
# filename = "${pkgs.qemu}/libexec/qemu-bridge-helper";
# owner = "root";
# group = "qemu-users";
# mode = "4710";
#};
system.activationScripts."krebs.setuid" = stringAfter [ "setuid" ] ''
src=${pkgs.execve "qemu-bridge-helper" {
filename = "${pkgs.qemu}/libexec/qemu-bridge-helper";
}}
dst=${config.security.wrapperDir}/qemu-bridge-helper
cp "$src" "$dst"
chown root.qemu-users "$dst"
chmod 4710 "$dst"
'';
users.users.qemu-dnsmasq.uid = genid "qemu-dnsmasq";
# TODO need custom etc/dbus-1/system.d/dnsmasq.conf for different BusName
services.dbus.packages = [ pkgs.dnsmasq ];
systemd.services.qemu-dnsmasq = let
# bind-interfaces
conf = pkgs.writeText "qemu-dnsmasq.conf" ''
listen-address=10.56.0.1
interface=qemubr0
dhcp-range=10.56.0.200,10.56.0.250
dhcp-no-override
dhcp-leasefile=/tmp/qemu-dnsmasq.leases
domain=${host-name}.local
dhcp-host=52:54:00:12:34:56,xu-qemu0,10.56.0.101,1440m
'';
in {
after = [ "network.target" "systemd-resolved.service" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "dbus";
BusName = "uk.org.thekelleys.dnsmasq";
# -1 --enable-dbus[=uk.org.thekelleys.dnsmasq]
SyslogIdentifier = "qemu-dnsmasq";
ExecStart = "${pkgs.dnsmasq}/bin/dnsmasq -1k -u qemu-dnsmasq -C ${conf}";
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
PrivateTmp = "true";
};
restartTriggers = [ config.environment.etc.hosts.source ];
};
krebs.nginx.servers.init = {
server-names = [
"init.${host-name}"
"init.${host-name}.r"
"init.${host-name}.retiolum"
];
extraConfig = ''
index init.txt;
root ${pkgs.writeTextFile {
name = "init-pages";
text = ''
#! /bin/sh
set -efu
dev=/dev/sda
pttype=dos # gpt
case $pttype in
dos)
if ! test "$(blkid -o value -s PTTYPE "$dev")" = dos; then
parted -s "$dev" mklabel msdos
fi
if ! test "$(blkid -o value -s PARTLABEL "$dev"1)" = primary; then
parted -s "$dev" mkpart primary ext4 1MiB 513MiB
parted -s "$dev" set 1 boot on
fi
;;
gpt)
if ! test "$(blkid -o value -s PTTYPE "$dev")" = gpt; then
parted -s "$dev" mklabel gpt
fi
if ! test "$(blkid -o value -s PARTLABEL "$dev"1)" = ESP; then
parted -s "$dev" mkpart ESP fat32 1MiB 513MiB
parted -s "$dev" set 1 boot on
fi
;;
*)
echo "Error: bad pttype: $pttype" >&2
exit -1
esac
if ! test "$(blkid -o value -s PARTLABEL "$dev"2)" = primary; then
parted -s "$dev" mkpart primary btrfs 513MiB 100%
fi
if ! test "$(blkid -o value -s TYPE "$dev"1)" = vfat; then
mkfs.vfat "$dev"1
fi
if ! test "$(blkid -o value -s TYPE "$dev"2)" = btrfs; then
mkfs.btrfs "$dev"2
fi
parted "$dev" print
if ! test "$(lsblk -n -o MOUNTPOINT "$dev"2)" = /mnt; then
mount "$dev"2 /mnt
fi
if ! test "$(lsblk -n -o MOUNTPOINT "$dev"1)" = /mnt/boot; then
mkdir -m 0000 -p /mnt/boot
mount "$dev"1 /mnt/boot
fi
lsblk "$dev"
key=${shell.escape config.krebs.users.tv-xu.pubkey}
if [ "$(cat /root/.ssh/authorized_keys 2>/dev/null)" != "$key" ]; then
mkdir -p /root/.ssh
echo "$key" > /root/.ssh/authorized_keys
fi
systemctl start sshd
ip route
echo READY.
'';
destination = "/init.txt";
}};
'';
};
krebs.hosts.${host-name}.nets.retiolum.aliases = [
"init.${host-name}.r"
"init.${host-name}.retiolum"
"vnc.${host-name}.r"
"vnc.${host-name}.retiolum"
];
krebs.nginx.servers.noVNC = {
server-names = [
"vnc.${host-name}"
"vnc.${host-name}.r"
"vnc.${host-name}.retiolum"
];
#rewrite ^([^.]*)$ /vnc_auto.html?host=localhost&port=5701;
locations = singleton (nameValuePair "/" ''
index vnc.html;
root ${pkgs.noVNC};
'');
};
}
|
