nix-scripts/artiq-fast/wfvm/win.nix

164 lines
4.6 KiB
Nix

{ pkgs
, diskImageSize ? "22G"
, windowsImage ? null
, autoUnattendParams ? {}
, impureMode ? false
, installCommands ? []
, users ? {}
, ...
}@attrs:
let
lib = pkgs.lib;
utils = import ./utils.nix { inherit pkgs; };
libguestfs = pkgs.libguestfs-with-appliance;
# p7zip on >20.03 has known vulns but we have no better option
p7zip = pkgs.p7zip.overrideAttrs(old: {
meta = old.meta // {
knownVulnerabilities = [];
};
});
runQemuCommand = name: command: (
pkgs.runCommandNoCC name { buildInputs = [ p7zip utils.qemu libguestfs ]; }
(
''
if ! test -f; then
echo "KVM not available, bailing out" >> /dev/stderr
exit 1
fi
'' + command
)
);
windowsIso = if windowsImage != null then windowsImage else pkgs.fetchurl {
url = "https://software-download.microsoft.com/download/sg/17763.107.101029-1455.rs5_release_svc_refresh_CLIENT_LTSC_EVAL_x64FRE_en-us.iso";
sha256 = "668fe1af70c2f7416328aee3a0bb066b12dc6bbd2576f40f812b95741e18bc3a";
};
openSshServerPackage = ./openssh/server-package.cab;
autounattend = import ./autounattend.nix (
attrs // {
inherit pkgs;
users = users // {
wfvm = {
password = "1234";
description = "WFVM Administrator";
groups = [
"Administrators"
];
};
};
}
);
bundleInstaller = pkgs.callPackage ./bundle {};
# Packages required to drive installation of other packages
bootstrapPkgs =
runQemuCommand "bootstrap-win-pkgs.img" ''
mkdir -p pkgs/fod
cp ${bundleInstaller} pkgs/"$(stripHash "${bundleInstaller}")"
# Install optional windows features
cp ${openSshServerPackage} pkgs/fod/OpenSSH-Server-Package~31bf3856ad364e35~amd64~~.cab
# SSH setup script goes here because windows XML parser sucks
cp ${autounattend.setupScript} pkgs/ssh-setup.ps1
virt-make-fs --partition --type=fat pkgs/ $out
'';
installScript = pkgs.writeScript "windows-install-script" (
let
qemuParams = utils.mkQemuFlags (lib.optional (!impureMode) "-nographic" ++ [
# "CD" drive with bootstrap pkgs
"-drive"
"id=virtio-win,file=${bootstrapPkgs},if=none,format=raw,readonly=on"
"-device"
"usb-storage,drive=virtio-win"
# USB boot
"-drive"
"id=win-install,file=usbimage.img,if=none,format=raw,readonly=on"
"-device"
"usb-storage,drive=win-install"
# Output image
"-drive"
"file=c.img,index=0,media=disk,cache=unsafe"
# Network
"-netdev user,id=n1,net=192.168.1.0/24,restrict=on"
]);
in
''
#!${pkgs.runtimeShell}
set -euxo pipefail
export PATH=${lib.makeBinPath [ p7zip utils.qemu libguestfs ]}:$PATH
# Create a bootable "USB" image
# Booting in USB mode circumvents the "press any key to boot from cdrom" prompt
#
# Also embed the autounattend answer file in this image
mkdir -p win
mkdir -p win/nix-win
7z x -y ${windowsIso} -owin
cp ${autounattend.autounattendXML} win/autounattend.xml
virt-make-fs --partition --type=fat win/ usbimage.img
rm -rf win
# Qemu requires files to be rw
qemu-img create -f qcow2 c.img ${diskImageSize}
qemu-system-x86_64 ${lib.concatStringsSep " " qemuParams}
''
);
baseImage = pkgs.runCommandNoCC "windows.img" {} ''
${installScript}
mv c.img $out
'';
finalImage = builtins.foldl' (acc: v: pkgs.runCommandNoCC "${v.name}.img" {
buildInputs = with utils; [
qemu win-wait win-exec win-put
] ++ (v.buildInputs or []);
} (let
script = pkgs.writeScript "${v.name}-script" v.script;
qemuParams = utils.mkQemuFlags (lib.optional (!impureMode) "-nographic" ++ [
# Output image
"-drive"
"file=c.img,index=0,media=disk,cache=unsafe"
# Network - enable SSH forwarding
"-netdev user,id=n1,net=192.168.1.0/24,restrict=on,hostfwd=tcp::2022-:22"
]);
in ''
# Create an image referencing the previous image in the chain
qemu-img create -f qcow2 -b ${acc} c.img
set -m
qemu-system-x86_64 ${lib.concatStringsSep " " qemuParams} &
win-wait
echo "Executing script to build layer..."
${script}
echo "Layer script done"
echo "Shutting down..."
win-exec 'shutdown /s'
echo "Waiting for VM to terminate..."
fg
echo "Done"
mv c.img $out
'')) baseImage installCommands;
in
# impureMode is meant for debugging the base image, not the full incremental build process
if !(impureMode) then finalImage else assert installCommands == []; installScript