{ 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" ]; wantedBy = [ "multi-user.target" ]; 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}; ''); }; }