mirror of
https://git.mediani.de/mirrors_public/oddlama_nixos-extra-modules.git
synced 2025-10-10 22:10:38 +02:00
feat: rework wireguard modules using globals
This commit is contained in:
Patrick
parent
93b08971cf
commit
ee0c651439
7 changed files with 456 additions and 627 deletions
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@ -17,6 +17,7 @@ in
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These should not include any config only option declaration.
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Will be included in the exported nixos Modules from this flake to be included
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into the host evaluation.
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Be aware that at most 1 of these modules can have a default
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'';
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};
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defModules = mkOption {
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@ -38,37 +39,45 @@ in
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'';
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};
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};
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config.flake = flakeSubmod: {
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globals =
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let
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globalsSystem = lib.evalModules {
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prefix = [ "globals" ];
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specialArgs = {
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inherit (inputs.self.pkgs.x86_64-linux) lib;
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inherit inputs;
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inherit (flakeSubmod.config) nodes;
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};
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modules =
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config.globals.optModules
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++ config.globals.defModules
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++ [
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../modules/globals.nix
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(
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{ lib, ... }:
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{
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globals = lib.mkMerge (
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lib.concatLists (
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lib.flip lib.mapAttrsToList flakeSubmod.config.nodes (
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name: cfg:
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builtins.addErrorContext "while aggregating globals from nixosConfigurations.${name} into flake-level globals:" cfg.config._globalsDefs
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config = {
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globals = {
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optModules = [
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../modules/wireguardGlobals.nix
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];
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attrkeys = [ "wireguard" ];
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};
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flake = flakeSubmod: {
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globals =
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let
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globalsSystem = lib.evalModules {
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prefix = [ "globals" ];
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specialArgs = {
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inherit (inputs.self.pkgs.x86_64-linux) lib;
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inherit inputs;
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inherit (flakeSubmod.config) nodes;
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};
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modules =
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config.globals.optModules
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++ config.globals.defModules
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++ [
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../modules/globals.nix
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(
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{ lib, ... }:
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{
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globals = lib.mkMerge (
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lib.concatLists (
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lib.flip lib.mapAttrsToList flakeSubmod.config.nodes (
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name: cfg:
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builtins.addErrorContext "while aggregating globals from nixosConfigurations.${name} into flake-level globals:" cfg.config._globalsDefs
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)
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)
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)
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);
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}
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)
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];
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};
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in
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lib.genAttrs config.globals.attrkeys (x: globalsSystem.config.globals.${x});
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);
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}
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)
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];
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};
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in
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lib.genAttrs config.globals.attrkeys (x: globalsSystem.config.globals.${x});
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};
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};
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}
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@ -1,178 +0,0 @@
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inputs: final: prev: let
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inherit
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(inputs.nixpkgs.lib)
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assertMsg
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attrNames
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attrValues
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concatLists
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concatMap
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filter
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flip
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genAttrs
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partition
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warn
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;
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inherit
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(final.lib)
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net
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types
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;
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in {
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lib =
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prev.lib
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// rec {
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wireguard.evaluateNetwork = userInputs: wgName: let
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inherit (userInputs.self) nodes;
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# Returns the given node's wireguard configuration of this network
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wgCfgOf = node: nodes.${node}.config.wireguard.${wgName};
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sortedPeers = peerA: peerB:
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if peerA < peerB
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then {
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peer1 = peerA;
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peer2 = peerB;
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}
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else {
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peer1 = peerB;
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peer2 = peerA;
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};
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peerPublicKeyFile = peerName: "/secrets/wireguard/${wgName}/keys/${peerName}.pub";
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peerPublicKeyPath = peerName: userInputs.self.outPath + peerPublicKeyFile peerName;
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peerPrivateKeyFile = peerName: "/secrets/wireguard/${wgName}/keys/${peerName}.age";
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peerPrivateKeyPath = peerName: userInputs.self.outPath + peerPrivateKeyFile peerName;
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peerPrivateKeySecret = peerName: "wireguard-${wgName}-priv-${peerName}";
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peerPresharedKeyFile = peerA: peerB: let
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inherit (sortedPeers peerA peerB) peer1 peer2;
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in "/secrets/wireguard/${wgName}/psks/${peer1}+${peer2}.age";
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peerPresharedKeyPath = peerA: peerB: userInputs.self.outPath + peerPresharedKeyFile peerA peerB;
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peerPresharedKeySecret = peerA: peerB: let
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inherit (sortedPeers peerA peerB) peer1 peer2;
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in "wireguard-${wgName}-psks-${peer1}+${peer2}";
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# All nodes that are part of this network
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participatingNodes = filter (n: builtins.hasAttr wgName nodes.${n}.config.wireguard) (
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attrNames nodes
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);
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# Partition nodes by whether they are servers
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_participatingNodes_isServerPartition =
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partition (
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n: (wgCfgOf n).server.host != null
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)
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participatingNodes;
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participatingServerNodes = _participatingNodes_isServerPartition.right;
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participatingClientNodes = _participatingNodes_isServerPartition.wrong;
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# Maps all nodes that are part of this network to their addresses
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nodePeers = genAttrs participatingNodes (n: (wgCfgOf n).addresses);
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# A list of all occurring addresses.
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usedAddresses = concatMap (n: (wgCfgOf n).addresses) participatingNodes;
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# A list of all occurring addresses, but only includes addresses that
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# are not assigned automatically.
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explicitlyUsedAddresses = flip concatMap participatingNodes (
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n:
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filter (x: !types.isLazyValue x) (
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concatLists
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(nodes.${n}.options.wireguard.type.nestedTypes.elemType.getSubOptions (wgCfgOf n))
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.addresses
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.definitions
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)
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);
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# The cidrv4 and cidrv6 of the network spanned by all participating peer addresses.
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# This also takes into account any reserved address ranges that should be part of the network.
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networkAddresses = net.cidr.merge (
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usedAddresses ++ concatMap (n: (wgCfgOf n).server.reservedAddresses) participatingServerNodes
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);
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# The network spanning cidr addresses. The respective cidrv4 and cirdv6 are only
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# included if they exist.
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networkCidrs = filter (x: x != null) (attrValues networkAddresses);
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# The cidrv4 and cidrv6 of the network spanned by all reserved addresses only.
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# Used to determine automatically assigned addresses first.
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spannedReservedNetwork = net.cidr.merge (
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concatMap (n: (wgCfgOf n).server.reservedAddresses) participatingServerNodes
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);
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# Assigns an ipv4 address from spannedReservedNetwork.cidrv4
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# to each participant that has not explicitly specified an ipv4 address.
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assignedIpv4Addresses = assert assertMsg (spannedReservedNetwork.cidrv4 != null)
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"Wireguard network '${wgName}': At least one participating node must reserve a cidrv4 address via `reservedAddresses` so that ipv4 addresses can be assigned automatically from that network.";
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net.cidr.assignIps spannedReservedNetwork.cidrv4
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# Don't assign any addresses that are explicitly configured on other hosts
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(filter (x: net.cidr.contains x spannedReservedNetwork.cidrv4) (
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filter net.ip.isv4 explicitlyUsedAddresses
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))
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participatingNodes;
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# Assigns an ipv6 address from spannedReservedNetwork.cidrv6
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# to each participant that has not explicitly specified an ipv6 address.
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assignedIpv6Addresses = assert assertMsg (spannedReservedNetwork.cidrv6 != null)
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"Wireguard network '${wgName}': At least one participating node must reserve a cidrv6 address via `reservedAddresses` so that ipv6 addresses can be assigned automatically from that network.";
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net.cidr.assignIps spannedReservedNetwork.cidrv6
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# Don't assign any addresses that are explicitly configured on other hosts
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(filter (x: net.cidr.contains x spannedReservedNetwork.cidrv6) (
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filter net.ip.isv6 explicitlyUsedAddresses
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))
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participatingNodes;
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# Appends / replaces the correct cidr length to the argument,
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# so that the resulting address is in the cidr.
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toNetworkAddr = addr: let
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relevantNetworkAddr =
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if net.ip.isv6 addr
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then networkAddresses.cidrv6
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else networkAddresses.cidrv4;
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in "${net.cidr.ip addr}/${toString (net.cidr.length relevantNetworkAddr)}";
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in {
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inherit
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assignedIpv4Addresses
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assignedIpv6Addresses
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explicitlyUsedAddresses
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networkAddresses
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networkCidrs
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nodePeers
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participatingClientNodes
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participatingNodes
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participatingServerNodes
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peerPresharedKeyFile
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peerPresharedKeyPath
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peerPresharedKeySecret
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peerPrivateKeyFile
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peerPrivateKeyPath
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peerPrivateKeySecret
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peerPublicKeyFile
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peerPublicKeyPath
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sortedPeers
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spannedReservedNetwork
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toNetworkAddr
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usedAddresses
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wgCfgOf
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;
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};
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wireguard.createEvalCache = userInputs: wgNames: genAttrs wgNames (wireguard.evaluateNetwork userInputs);
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wireguard.getNetwork = userInputs: wgName:
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userInputs.self.wireguardEvalCache.${wgName}
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or (warn ''
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The calculated information for the wireguard network "${wgName}" is not cached!
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This will siginificantly increase evaluation times. Please consider pre-evaluating
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this information by exposing it in your flake:
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wireguardEvalCache = lib.wireguard.createEvalCache inputs [
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"${wgName}"
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# all other networks
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];
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'' (wireguard.evaluateNetwork userInputs wgName));
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};
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}
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@ -10,7 +10,7 @@
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./nginx.nix
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./node.nix
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./restic.nix
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./topology-wireguard.nix
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#./topology-wireguard.nix
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./wireguard.nix
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];
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@ -1,9 +1,18 @@
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{ lib, options, ... }:
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let
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inherit (lib) mkOption types;
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in
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{
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options._globalsDefs = lib.mkOption {
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type = lib.types.unspecified;
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default = options.globals.definitions;
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readOnly = true;
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internal = true;
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options = {
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globals = mkOption {
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default = { };
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type = types.submodule { };
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};
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_globalsDefs = mkOption {
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type = types.unspecified;
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default = options.globals.definitions;
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readOnly = true;
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internal = true;
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};
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};
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}
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@ -2,456 +2,278 @@
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config,
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inputs,
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lib,
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globals,
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...
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}: let
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inherit
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(lib)
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}:
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let
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inherit (lib)
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any
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concatAttrs
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concatMap
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concatStringsSep
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duplicates
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filter
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attrNames
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concatMapAttrs
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count
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mkMerge
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filterAttrs
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flip
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head
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listToAttrs
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mapAttrs'
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mapAttrsToList
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mergeToplevelConfigs
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mkIf
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mkOption
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nameValuePair
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attrValues
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net
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optional
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optionalAttrs
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optionals
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stringLength
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types
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concatLists
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;
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cfg = config.wireguard;
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nodeName = config.node.name;
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memberWG = filterAttrs (
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_: cfg: any (x: x == config.node.name) (attrNames cfg.hosts)
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) globals.wireguard;
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in
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configForNetwork = wgName: wgCfg: let
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inherit
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(lib.wireguard.getNetwork inputs wgName)
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networkCidrs
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participatingClientNodes
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participatingNodes
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participatingServerNodes
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peerPresharedKeyPath
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peerPresharedKeySecret
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peerPrivateKeyPath
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peerPrivateKeySecret
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peerPublicKeyPath
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toNetworkAddr
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usedAddresses
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wgCfgOf
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;
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isServer = wgCfg.server.host != null;
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isClient = wgCfg.client.via != null;
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filterSelf = filter (x: x != nodeName);
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# All nodes that use our node as the via into the wireguard network
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ourClientNodes = optionals isServer (
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filter (n: (wgCfgOf n).client.via == nodeName) participatingClientNodes
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);
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# The list of peers for which we have to know the psk.
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neededPeers =
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if isServer
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then
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# Other servers in the same network
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filterSelf participatingServerNodes
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# Our clients
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++ ourClientNodes
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else [wgCfg.client.via];
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# Figure out if there are duplicate addresses so we can make an assertion later.
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duplicateAddrs = duplicates usedAddresses;
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# Adds context information to the assertions for this network
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assertionPrefix = "Wireguard network '${wgName}' on '${nodeName}'";
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# Calculates the allowed ips for another server from our perspective.
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# Usually we just want to allow other peers to route traffic
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# for our "children" through us, additional to traffic to us of course.
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# If a server exposes additional network access (global, lan, ...),
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# these can be added aswell.
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# TODO (do that)
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serverAllowedIPs = serverNode: let
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snCfg = wgCfgOf serverNode;
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in
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map (net.cidr.make 128) (
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# The server accepts traffic to it's own address
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snCfg.addresses
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# plus traffic for any client that is connected via that server
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++ concatMap (n: (wgCfgOf n).addresses) (
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filter (n: (wgCfgOf n).client.via == serverNode) participatingClientNodes
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)
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);
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in {
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assertions = [
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{
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assertion = any (n: (wgCfgOf n).server.host != null) participatingNodes;
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message = "${assertionPrefix}: At least one node in a network must be a server.";
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}
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{
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assertion = duplicateAddrs == [];
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message = "${assertionPrefix}: Addresses used multiple times: ${concatStringsSep ", " duplicateAddrs}";
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}
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{
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assertion = isServer != isClient;
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message = "${assertionPrefix}: A node must either be a server (define server.host) or a client (define client.via).";
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}
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{
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assertion = isClient -> ((wgCfgOf wgCfg.client.via).server.host != null);
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message = "${assertionPrefix}: The specified via node '${wgCfg.client.via}' must be a wireguard server.";
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}
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{
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assertion = stringLength wgCfg.linkName < 16;
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message = "${assertionPrefix}: The specified linkName '${wgCfg.linkName}' is too long (must be max 15 characters).";
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}
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];
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# Open the udp port for the wireguard endpoint in the firewall
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networking.firewall.allowedUDPPorts = mkIf (isServer && wgCfg.server.openFirewall) [
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wgCfg.server.port
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];
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# If requested, create firewall rules for the network / specific participants and open ports.
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networking.nftables.firewall = let
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inherit (config.networking.nftables.firewall) localZoneName;
|
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in {
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zones =
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{
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assertions = concatLists (
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flip mapAttrsToList memberWG (
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networkName: networkCfg:
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let
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assertionPrefix = "While evaluation the wireguard network ${networkName}:";
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hostCfg = networkCfg.hosts.${config.node.name};
|
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in
|
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[
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{
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# Parent zone for the whole interface
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"wg-${wgCfg.linkName}".interfaces = [wgCfg.linkName];
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assertion = networkCfg.cidrv4 != null || networkCfg.cidrv6 != null;
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message = "${assertionPrefix}: At least one of cidrv4 or cidrv6 has to be set.";
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}
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// listToAttrs (
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flip map participatingNodes (
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peer: let
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peerCfg = wgCfgOf peer;
|
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in
|
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# Subzone to specifically target the peer
|
||||
nameValuePair "wg-${wgCfg.linkName}-node-${peer}" {
|
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parent = "wg-${wgCfg.linkName}";
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ipv4Addresses = [peerCfg.ipv4];
|
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ipv6Addresses = [peerCfg.ipv6];
|
||||
}
|
||||
)
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||||
);
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rules =
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{
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# Open ports for whole network
|
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"wg-${wgCfg.linkName}-to-${localZoneName}" = {
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from = ["wg-${wgCfg.linkName}"];
|
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to = [localZoneName];
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assertion = (count (x: x.server) (attrValues networkCfg.hosts)) == 1;
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message = "${assertionPrefix}: You have to declare exactly 1 server node.";
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}
|
||||
{
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assertion = (count (x: x.id == hostCfg.id) (attrValues networkCfg.hosts)) == 1;
|
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message = "${assertionPrefix}: More than one host with id ${toString hostCfg.id}";
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||||
}
|
||||
{
|
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assertion = stringLength hostCfg.linkName < 16;
|
||||
message = "${assertionPrefix}: The specified linkName '${hostCfg.linkName}' is too long (must be max 15 characters).";
|
||||
}
|
||||
]
|
||||
)
|
||||
);
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networking.firewall.allowedUDPPorts = mkMerge (
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flip mapAttrsToList memberWG (
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_: networkCfg:
|
||||
let
|
||||
hostCfg = networkCfg.hosts.${config.node.name};
|
||||
in
|
||||
optional (hostCfg.server && networkCfg.openFirewall) networkCfg.port
|
||||
)
|
||||
);
|
||||
networking.nftables.firewall.zones = mkMerge (
|
||||
flip mapAttrsToList memberWG (
|
||||
_: networkCfg:
|
||||
let
|
||||
hostCfg = networkCfg.hosts.${config.node.name};
|
||||
peers = filterAttrs (name: _: name != config.node.name) networkCfg.hosts;
|
||||
in
|
||||
{
|
||||
# Parent zone for the whole network
|
||||
"wg-${hostCfg.linkName}".interfaces = [ hostCfg.linkName ];
|
||||
}
|
||||
// (flip mapAttrs' peers (
|
||||
name: cfg:
|
||||
nameValuePair "wg-${hostCfg.linkName}-node-${name}" {
|
||||
parent = "wg-${hostCfg.linkName}";
|
||||
ipv4Addresses = optional (cfg.ipv4 != null) cfg.ipv4;
|
||||
ipv6Addresses = optional (cfg.ipv6 != null) cfg.ipv6;
|
||||
}
|
||||
))
|
||||
)
|
||||
);
|
||||
networking.nftables.firewall.rules = mkMerge (
|
||||
flip mapAttrsToList memberWG (
|
||||
_: networkCfg:
|
||||
let
|
||||
inherit (config.networking.nftables.firewall) localZoneName;
|
||||
hostCfg = networkCfg.hosts.${config.node.name};
|
||||
peers = filterAttrs (name: _: name != config.node.name) networkCfg.hosts;
|
||||
in
|
||||
{
|
||||
"wg-${hostCfg.linkName}-to-${localZoneName}" = {
|
||||
from = [ "wg-${hostCfg.linkName}" ];
|
||||
to = [ localZoneName ];
|
||||
ignoreEmptyRule = true;
|
||||
|
||||
inherit (hostCfg.firewallRuleForAll)
|
||||
allowedTCPPorts
|
||||
allowedUDPPorts
|
||||
;
|
||||
};
|
||||
}
|
||||
// (flip mapAttrs' peers (
|
||||
name: _:
|
||||
nameValuePair "wg-${hostCfg.linkName}-node-${name}-to-${localZoneName}" (
|
||||
mkIf (hostCfg.firewallRuleForNode ? ${name}) {
|
||||
from = [ "wg-${hostCfg.linkName}-node-${name}" ];
|
||||
to = [ localZoneName ];
|
||||
ignoreEmptyRule = true;
|
||||
|
||||
inherit
|
||||
(wgCfg.firewallRuleForAll)
|
||||
inherit (hostCfg.firewallRuleForNode.${name})
|
||||
allowedTCPPorts
|
||||
allowedUDPPorts
|
||||
;
|
||||
};
|
||||
}
|
||||
# Open ports for specific nodes network
|
||||
// listToAttrs (
|
||||
flip map participatingNodes (
|
||||
peer:
|
||||
nameValuePair "wg-${wgCfg.linkName}-node-${peer}-to-${localZoneName}" (
|
||||
mkIf (wgCfg.firewallRuleForNode ? ${peer}) {
|
||||
from = ["wg-${wgCfg.linkName}-node-${peer}"];
|
||||
to = [localZoneName];
|
||||
ignoreEmptyRule = true;
|
||||
|
||||
inherit
|
||||
(wgCfg.firewallRuleForNode.${peer})
|
||||
allowedTCPPorts
|
||||
allowedUDPPorts
|
||||
;
|
||||
}
|
||||
)
|
||||
)
|
||||
);
|
||||
};
|
||||
|
||||
age.secrets =
|
||||
concatAttrs (
|
||||
map (other: {
|
||||
${peerPresharedKeySecret nodeName other} = {
|
||||
rekeyFile = peerPresharedKeyPath nodeName other;
|
||||
owner = "systemd-network";
|
||||
generator.script = {pkgs, ...}: "${pkgs.wireguard-tools}/bin/wg genpsk";
|
||||
}
|
||||
)
|
||||
))
|
||||
)
|
||||
);
|
||||
age.secrets = flip concatMapAttrs memberWG (
|
||||
networkName: networkCfg:
|
||||
let
|
||||
serverNode = filterAttrs (_: cfg: cfg.server) networkCfg.hosts;
|
||||
connectedPeers = if hostCfg.server then peers else serverNode;
|
||||
hostCfg = networkCfg.hosts.${config.node.name};
|
||||
peers = filterAttrs (name: _: name != config.node.name) networkCfg.hosts;
|
||||
sortedPeers =
|
||||
peerA: peerB:
|
||||
if peerA < peerB then
|
||||
{
|
||||
peer1 = peerA;
|
||||
peer2 = peerB;
|
||||
}
|
||||
else
|
||||
{
|
||||
peer1 = peerB;
|
||||
peer2 = peerA;
|
||||
};
|
||||
})
|
||||
neededPeers
|
||||
)
|
||||
// {
|
||||
${peerPrivateKeySecret nodeName} = {
|
||||
rekeyFile = peerPrivateKeyPath nodeName;
|
||||
owner = "systemd-network";
|
||||
generator.script = {
|
||||
|
||||
peerPrivateKeyFile = peerName: "/secrets/wireguard/${networkName}/keys/${peerName}.age";
|
||||
peerPrivateKeyPath = peerName: inputs.self.outPath + peerPrivateKeyFile peerName;
|
||||
peerPrivateKeySecret = peerName: "wireguard-${networkName}-priv-${peerName}";
|
||||
peerPresharedKeyFile =
|
||||
peerA: peerB:
|
||||
let
|
||||
inherit (sortedPeers peerA peerB) peer1 peer2;
|
||||
in
|
||||
"/secrets/wireguard/${networkName}/psks/${peer1}+${peer2}.age";
|
||||
peerPresharedKeyPath = peerA: peerB: inputs.self.outPath + peerPresharedKeyFile peerA peerB;
|
||||
peerPresharedKeySecret =
|
||||
peerA: peerB:
|
||||
let
|
||||
inherit (sortedPeers peerA peerB) peer1 peer2;
|
||||
in
|
||||
"wireguard-${networkName}-psks-${peer1}+${peer2}";
|
||||
in
|
||||
flip mapAttrs' connectedPeers (
|
||||
name: _:
|
||||
nameValuePair (peerPresharedKeySecret config.node.name name) {
|
||||
rekeyFile = peerPresharedKeyPath config.node.name name;
|
||||
owner = "systemd-network";
|
||||
generator.script = { pkgs, ... }: "${pkgs.wireguard-tools}/bin/wg genpsk";
|
||||
}
|
||||
)
|
||||
// {
|
||||
${peerPrivateKeySecret config.node.name} = {
|
||||
rekeyFile = peerPrivateKeyPath config.node.name;
|
||||
owner = "systemd-network";
|
||||
generator.script =
|
||||
{
|
||||
pkgs,
|
||||
file,
|
||||
...
|
||||
}: ''
|
||||
}:
|
||||
''
|
||||
priv=$(${pkgs.wireguard-tools}/bin/wg genkey)
|
||||
${pkgs.wireguard-tools}/bin/wg pubkey <<< "$priv" > ${
|
||||
lib.escapeShellArg (lib.removeSuffix ".age" file + ".pub")
|
||||
}
|
||||
echo "$priv"
|
||||
'';
|
||||
};
|
||||
};
|
||||
}
|
||||
);
|
||||
systemd.network.netdevs = flip mapAttrs' memberWG (
|
||||
networkName: networkCfg:
|
||||
let
|
||||
serverNode = filterAttrs (_: cfg: cfg.server) networkCfg.hosts;
|
||||
hostCfg = networkCfg.hosts.${config.node.name};
|
||||
peers = filterAttrs (name: _: name != config.node.name) networkCfg.hosts;
|
||||
sortedPeers =
|
||||
peerA: peerB:
|
||||
if peerA < peerB then
|
||||
{
|
||||
peer1 = peerA;
|
||||
peer2 = peerB;
|
||||
}
|
||||
else
|
||||
{
|
||||
peer1 = peerB;
|
||||
peer2 = peerA;
|
||||
};
|
||||
|
||||
systemd.network.netdevs."${wgCfg.unitConfName}" = {
|
||||
peerPublicKeyFile = peerName: "/secrets/wireguard/${networkName}/keys/${peerName}.pub";
|
||||
peerPublicKeyPath = peerName: inputs.self.outPath + peerPublicKeyFile peerName;
|
||||
|
||||
peerPrivateKeySecret = peerName: "wireguard-${networkName}-priv-${peerName}";
|
||||
peerPresharedKeySecret =
|
||||
peerA: peerB:
|
||||
let
|
||||
inherit (sortedPeers peerA peerB) peer1 peer2;
|
||||
in
|
||||
"wireguard-${networkName}-psks-${peer1}+${peer2}";
|
||||
in
|
||||
nameValuePair "${hostCfg.unitConfName}" {
|
||||
netdevConfig = {
|
||||
Kind = "wireguard";
|
||||
Name = wgCfg.linkName;
|
||||
Description = "Wireguard network ${wgName}";
|
||||
Name = hostCfg.linkName;
|
||||
Description = "Wireguard network ${networkName}";
|
||||
};
|
||||
wireguardConfig =
|
||||
{
|
||||
PrivateKeyFile = config.age.secrets.${peerPrivateKeySecret nodeName}.path;
|
||||
PrivateKeyFile = config.age.secrets.${peerPrivateKeySecret config.node.name}.path;
|
||||
}
|
||||
// optionalAttrs isServer {
|
||||
ListenPort = wgCfg.server.port;
|
||||
// optionalAttrs hostCfg.server {
|
||||
ListenPort = networkCfg.port;
|
||||
};
|
||||
wireguardPeers =
|
||||
if isServer
|
||||
then
|
||||
# Always include all other server nodes.
|
||||
map (
|
||||
serverNode: let
|
||||
snCfg = wgCfgOf serverNode;
|
||||
in {
|
||||
PublicKey = builtins.readFile (peerPublicKeyPath serverNode);
|
||||
PresharedKeyFile = config.age.secrets.${peerPresharedKeySecret nodeName serverNode}.path;
|
||||
AllowedIPs = serverAllowedIPs serverNode;
|
||||
Endpoint = "${snCfg.server.host}:${toString snCfg.server.port}";
|
||||
}
|
||||
) (filterSelf participatingServerNodes)
|
||||
if hostCfg.server then
|
||||
# All client nodes that have their via set to us.
|
||||
++ map (
|
||||
clientNode: let
|
||||
clientCfg = wgCfgOf clientNode;
|
||||
in {
|
||||
PublicKey = builtins.readFile (peerPublicKeyPath clientNode);
|
||||
PresharedKeyFile = config.age.secrets.${peerPresharedKeySecret nodeName clientNode}.path;
|
||||
AllowedIPs = map (net.cidr.make 128) clientCfg.addresses;
|
||||
}
|
||||
)
|
||||
ourClientNodes
|
||||
mapAttrsToList (clientName: clientCfg: {
|
||||
PublicKey = builtins.readFile (peerPublicKeyPath clientName);
|
||||
PresharedKeyFile = config.age.secrets.${peerPresharedKeySecret config.node.name clientName}.path;
|
||||
AllowedIPs =
|
||||
(optional (clientCfg.ipv4 != null) (net.cidr.make 32 clientCfg.ipv4))
|
||||
++ (optional (clientCfg.ipv6 != null) (net.cidr.make 128 clientCfg.ipv6));
|
||||
}) peers
|
||||
else
|
||||
# We are a client node, so only include our via server.
|
||||
[
|
||||
(
|
||||
let
|
||||
snCfg = wgCfgOf wgCfg.client.via;
|
||||
in
|
||||
{
|
||||
PublicKey = builtins.readFile (peerPublicKeyPath wgCfg.client.via);
|
||||
PresharedKeyFile = config.age.secrets.${peerPresharedKeySecret nodeName wgCfg.client.via}.path;
|
||||
Endpoint = "${snCfg.server.host}:${toString snCfg.server.port}";
|
||||
# Access to the whole network is routed through our entry node.
|
||||
AllowedIPs = networkCidrs;
|
||||
}
|
||||
// optionalAttrs wgCfg.client.keepalive {
|
||||
PersistentKeepalive = 25;
|
||||
}
|
||||
)
|
||||
];
|
||||
};
|
||||
|
||||
systemd.network.networks.${wgCfg.unitConfName} = {
|
||||
matchConfig.Name = wgCfg.linkName;
|
||||
address = map toNetworkAddr wgCfg.addresses;
|
||||
};
|
||||
};
|
||||
in {
|
||||
options.wireguard = mkOption {
|
||||
default = {};
|
||||
description = "Configures wireguard networks via systemd-networkd.";
|
||||
type = types.lazyAttrsOf (
|
||||
types.submodule (
|
||||
{
|
||||
config,
|
||||
name,
|
||||
options,
|
||||
...
|
||||
}: {
|
||||
options = {
|
||||
server = {
|
||||
host = mkOption {
|
||||
default = null;
|
||||
type = types.nullOr types.str;
|
||||
description = "The hostname or ip address which other peers can use to reach this host. No server functionality will be activated if set to null.";
|
||||
};
|
||||
|
||||
port = mkOption {
|
||||
default = 51820;
|
||||
type = types.port;
|
||||
description = "The port to listen on.";
|
||||
};
|
||||
|
||||
openFirewall = mkOption {
|
||||
default = false;
|
||||
type = types.bool;
|
||||
description = "Whether to open the firewall for the specified {option}`port`.";
|
||||
};
|
||||
|
||||
reservedAddresses = mkOption {
|
||||
type = types.listOf types.net.cidr;
|
||||
default = [];
|
||||
example = [
|
||||
"10.0.0.0/24"
|
||||
"fd00:cafe::/64"
|
||||
];
|
||||
description = ''
|
||||
Allows defining extra CIDR network ranges that shall be reserved for this network.
|
||||
Reservation means that those address spaces will be guaranteed to be included in
|
||||
the spanned network, but no rules will be enforced as to who in the network may use them.
|
||||
|
||||
By default, this module will try to allocate the smallest address space that includes
|
||||
all network peers.
|
||||
'';
|
||||
};
|
||||
};
|
||||
|
||||
client = {
|
||||
via = mkOption {
|
||||
default = null;
|
||||
type = types.nullOr types.str;
|
||||
description = ''
|
||||
The server node via which to connect to the network.
|
||||
No client functionality will be activated if set to null.
|
||||
'';
|
||||
};
|
||||
|
||||
keepalive = mkOption {
|
||||
default = true;
|
||||
type = types.bool;
|
||||
description = "Whether to keep this connection alive using PersistentKeepalive. Set to false only for networks where client and server IPs are stable.";
|
||||
};
|
||||
};
|
||||
|
||||
priority = mkOption {
|
||||
default = 40;
|
||||
type = types.int;
|
||||
description = "The order priority used when creating systemd netdev and network files.";
|
||||
};
|
||||
|
||||
linkName = mkOption {
|
||||
default = name;
|
||||
type = types.str;
|
||||
description = "The name for the created network interface.";
|
||||
};
|
||||
|
||||
unitConfName = mkOption {
|
||||
default = "${toString config.priority}-${config.linkName}";
|
||||
readOnly = true;
|
||||
type = types.str;
|
||||
description = ''
|
||||
The name used for unit configuration files. This is a read-only option.
|
||||
Access this if you want to add additional settings to the generated systemd units.
|
||||
'';
|
||||
};
|
||||
|
||||
ipv4 = mkOption {
|
||||
type = types.lazyOf types.net.ipv4;
|
||||
default = types.lazyValue (lib.wireguard.getNetwork inputs name).assignedIpv4Addresses.${nodeName};
|
||||
description = ''
|
||||
The ipv4 address for this machine. If you do not set this explicitly,
|
||||
a semi-stable ipv4 address will be derived automatically based on the
|
||||
hostname of this machine. At least one participating server must reserve
|
||||
a big-enough space of addresses by setting `reservedAddresses`.
|
||||
See `net.cidr.assignIps` for more information on the algorithm.
|
||||
'';
|
||||
};
|
||||
|
||||
ipv6 = mkOption {
|
||||
type = types.lazyOf types.net.ipv6;
|
||||
default = types.lazyValue (lib.wireguard.getNetwork inputs name).assignedIpv6Addresses.${nodeName};
|
||||
description = ''
|
||||
The ipv6 address for this machine. If you do not set this explicitly,
|
||||
a semi-stable ipv6 address will be derived automatically based on the
|
||||
hostname of this machine. At least one participating server must reserve
|
||||
a big-enough space of addresses by setting `reservedAddresses`.
|
||||
See `net.cidr.assignIps` for more information on the algorithm.
|
||||
'';
|
||||
};
|
||||
|
||||
addresses = mkOption {
|
||||
type = types.listOf (types.lazyOf types.net.ip);
|
||||
default = [
|
||||
(head options.ipv4.definitions)
|
||||
(head options.ipv6.definitions)
|
||||
];
|
||||
description = ''
|
||||
The ip addresses (v4 and/or v6) to use for this machine.
|
||||
The actual network cidr will automatically be derived from all network participants.
|
||||
By default this will just include {option}`ipv4` and {option}`ipv6` as configured.
|
||||
'';
|
||||
};
|
||||
|
||||
firewallRuleForAll = mkOption {
|
||||
default = {};
|
||||
description = ''
|
||||
Allows you to set specific firewall rules for traffic originating from any participant in this
|
||||
wireguard network. A corresponding rule `wg-<network-name>-to-<local-zone-name>` will be created to easily expose
|
||||
services to the network.
|
||||
'';
|
||||
type = types.submodule {
|
||||
options = {
|
||||
allowedTCPPorts = mkOption {
|
||||
type = types.listOf types.port;
|
||||
default = [];
|
||||
description = "Convenience option to open specific TCP ports for traffic from the network.";
|
||||
};
|
||||
allowedUDPPorts = mkOption {
|
||||
type = types.listOf types.port;
|
||||
default = [];
|
||||
description = "Convenience option to open specific UDP ports for traffic from the network.";
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
firewallRuleForNode = mkOption {
|
||||
default = {};
|
||||
description = ''
|
||||
Allows you to set specific firewall rules just for traffic originating from another network node.
|
||||
A corresponding rule `wg-<network-name>-node-<node-name>-to-<local-zone-name>` will be created to easily expose
|
||||
services to that node.
|
||||
'';
|
||||
type = types.attrsOf (
|
||||
types.submodule {
|
||||
options = {
|
||||
allowedTCPPorts = mkOption {
|
||||
type = types.listOf types.port;
|
||||
default = [];
|
||||
description = "Convenience option to open specific TCP ports for traffic from another node.";
|
||||
};
|
||||
allowedUDPPorts = mkOption {
|
||||
type = types.listOf types.port;
|
||||
default = [];
|
||||
description = "Convenience option to open specific UDP ports for traffic from another node.";
|
||||
};
|
||||
};
|
||||
}
|
||||
);
|
||||
};
|
||||
};
|
||||
}
|
||||
)
|
||||
);
|
||||
};
|
||||
|
||||
config = mkIf (cfg != {}) (
|
||||
mergeToplevelConfigs ["assertions" "age" "networking" "systemd"] (
|
||||
mapAttrsToList configForNetwork cfg
|
||||
)
|
||||
mapAttrsToList (
|
||||
serverName: _:
|
||||
{
|
||||
PublicKey = builtins.readFile (peerPublicKeyPath serverName);
|
||||
PresharedKeyFile = config.age.secrets.${peerPresharedKeySecret config.node.name serverName}.path;
|
||||
Endpoint = "${networkCfg.host}:${toString networkCfg.port}";
|
||||
# Access to the whole network is routed through our entry node.
|
||||
AllowedIPs =
|
||||
(optional (networkCfg.cidrv4 != null) networkCfg.cidrv4)
|
||||
++ (optional (networkCfg.cidrv6 != null) networkCfg.cidrv6);
|
||||
}
|
||||
// optionalAttrs hostCfg.keepalive {
|
||||
PersistentKeepalive = 25;
|
||||
}
|
||||
) serverNode;
|
||||
}
|
||||
);
|
||||
systemd.network.networks = flip mapAttrs' memberWG (
|
||||
_: networkCfg:
|
||||
let
|
||||
hostCfg = networkCfg.hosts.${config.node.name};
|
||||
in
|
||||
nameValuePair hostCfg.unitConfName {
|
||||
matchConfig.Name = hostCfg.linkName;
|
||||
address =
|
||||
(optional (networkCfg.cidrv4 != null) (net.cidr.hostCidr hostCfg.id networkCfg.cidrv4))
|
||||
++ (optional (networkCfg.cidrv6 != null) (net.cidr.hostCidr hostCfg.id networkCfg.cidrv6));
|
||||
}
|
||||
);
|
||||
}
|
||||
|
|
|
|||
171
modules/wireguardGlobals.nix
Normal file
171
modules/wireguardGlobals.nix
Normal file
|
|
@ -0,0 +1,171 @@
|
|||
{ lib, ... }:
|
||||
let
|
||||
inherit (lib)
|
||||
mkOption
|
||||
types
|
||||
importJSON
|
||||
;
|
||||
in
|
||||
{
|
||||
options.globals = mkOption {
|
||||
type = types.submodule {
|
||||
options = {
|
||||
wireguard = mkOption {
|
||||
default = { };
|
||||
type = types.attrsOf (
|
||||
types.submodule (
|
||||
{ name, config, ... }:
|
||||
let
|
||||
wgConf = config;
|
||||
wgName = name;
|
||||
in
|
||||
{
|
||||
options = {
|
||||
host = mkOption {
|
||||
type = types.str;
|
||||
description = "The host name or IP addresse for reaching the server node.";
|
||||
};
|
||||
idFile = mkOption {
|
||||
type = types.nullOr types.path;
|
||||
default = null;
|
||||
description = "A json file containing a mapping from hostname to id.";
|
||||
};
|
||||
cidrv4 = mkOption {
|
||||
type = types.nullOr types.net.cidrv4;
|
||||
default = null;
|
||||
description = "The server host of this wireguard";
|
||||
};
|
||||
cidrv6 = mkOption {
|
||||
type = types.nullOr types.net.cidrv6;
|
||||
default = null;
|
||||
description = "The server host of this wireguard";
|
||||
};
|
||||
port = mkOption {
|
||||
default = 51820;
|
||||
type = types.port;
|
||||
description = "The port the server listens on";
|
||||
};
|
||||
openFirewall = mkOption {
|
||||
default = false;
|
||||
type = types.bool;
|
||||
description = "Whether to open the servers firewall for the specified {option}`port`. Has no effect for client nodes.";
|
||||
};
|
||||
|
||||
hosts = mkOption {
|
||||
default = { };
|
||||
description = "Attrset of hostName to host specific config";
|
||||
type = types.attrsOf (
|
||||
types.submodule (
|
||||
{ config, name, ... }:
|
||||
{
|
||||
config.id =
|
||||
let
|
||||
inherit (wgConf) idFile;
|
||||
in
|
||||
if (idFile == null) then
|
||||
null
|
||||
else
|
||||
(
|
||||
let
|
||||
conf = importJSON idFile;
|
||||
in
|
||||
conf.${name} or null
|
||||
);
|
||||
options = {
|
||||
server = mkOption {
|
||||
default = false;
|
||||
type = types.bool;
|
||||
description = "Whether this host acts as the server and relay for the network. Has to be set for exactly 1 host.";
|
||||
};
|
||||
linkName = mkOption {
|
||||
default = wgName;
|
||||
type = types.str;
|
||||
description = "The name of the created network interface. Has to be less than 15 characters.";
|
||||
};
|
||||
unitConfName = mkOption {
|
||||
default = "40-${config.linkName}";
|
||||
type = types.str;
|
||||
description = "The name of the generated systemd unit configuration files.";
|
||||
readOnly = true;
|
||||
};
|
||||
id = mkOption {
|
||||
type = types.int;
|
||||
description = "The unique id of this host. Used to derive its IP addresses. Has to be smaller than the size of the Subnet.";
|
||||
};
|
||||
ipv4 = mkOption {
|
||||
type = types.nullOr types.net.ipv4;
|
||||
default = if (wgConf.cidrv4 == null) then null else lib.net.cidr.host config.id wgConf.cidrv4;
|
||||
readOnly = true;
|
||||
description = "The IPv4 of this host. Automatically computed from the {option}`id`";
|
||||
};
|
||||
ipv6 = mkOption {
|
||||
type = types.nullOr types.net.ipv6;
|
||||
default = if (wgConf.cidrv4 == null) then null else lib.net.cidr.host config.id wgConf.cidrv6;
|
||||
readOnly = true;
|
||||
description = "The IPv4 of this host. Automatically computed from the {option}`id`";
|
||||
};
|
||||
keepalive = mkOption {
|
||||
default = true;
|
||||
type = types.bool;
|
||||
description = "Whether to keep the connection alive using PersistentKeepalive. Has no effect for server nodes.";
|
||||
};
|
||||
firewallRuleForAll = mkOption {
|
||||
default = { };
|
||||
description = ''
|
||||
Allows you to set specific firewall rules for traffic originating from any participant in this
|
||||
wireguard network. A corresponding rule `wg-<network-name>-to-<local-zone-name>` will be created to easily expose
|
||||
services to the network.
|
||||
'';
|
||||
type = types.submodule {
|
||||
options = {
|
||||
allowedTCPPorts = mkOption {
|
||||
type = types.listOf types.port;
|
||||
default = [ ];
|
||||
description = "Convenience option to open specific TCP ports for traffic from the network.";
|
||||
};
|
||||
allowedUDPPorts = mkOption {
|
||||
type = types.listOf types.port;
|
||||
default = [ ];
|
||||
description = "Convenience option to open specific UDP ports for traffic from the network.";
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
||||
firewallRuleForNode = mkOption {
|
||||
default = { };
|
||||
description = ''
|
||||
Allows you to set specific firewall rules just for traffic originating from another network node.
|
||||
A corresponding rule `wg-<network-name>-node-<node-name>-to-<local-zone-name>` will be created to easily expose
|
||||
services to that node.
|
||||
'';
|
||||
type = types.attrsOf (
|
||||
types.submodule {
|
||||
options = {
|
||||
allowedTCPPorts = mkOption {
|
||||
type = types.listOf types.port;
|
||||
default = [ ];
|
||||
description = "Convenience option to open specific TCP ports for traffic from another node.";
|
||||
};
|
||||
allowedUDPPorts = mkOption {
|
||||
type = types.listOf types.port;
|
||||
default = [ ];
|
||||
description = "Convenience option to open specific UDP ports for traffic from another node.";
|
||||
};
|
||||
};
|
||||
}
|
||||
);
|
||||
};
|
||||
};
|
||||
}
|
||||
)
|
||||
);
|
||||
};
|
||||
};
|
||||
}
|
||||
)
|
||||
);
|
||||
};
|
||||
};
|
||||
};
|
||||
};
|
||||
}
|
||||
|
|
@ -11,12 +11,8 @@ prev.lib.composeManyExtensions (
|
|||
./lib/disko.nix
|
||||
# Requires misc
|
||||
./lib/net.nix
|
||||
# Requires misc, types
|
||||
./lib/wireguard.nix
|
||||
])
|
||||
++ [
|
||||
(import ./pkgs)
|
||||
]
|
||||
)
|
||||
final
|
||||
prev
|
||||
) final prev
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue