45 lines
1.1 KiB
Nix
45 lines
1.1 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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serveOnly = pkgs.writeScript "nix-store-serve" ''
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#!${pkgs.stdenv.shell}
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if [ "$SSH_ORIGINAL_COMMAND" != "nix-store --serve" ]; then
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echo 'Error: You are only allowed to run `nix-store --serve'\'''!' >&2
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exit 1
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fi
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exec /run/current-system/sw/bin/nix-store --serve
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'';
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inherit (lib) mkIf mkOption types;
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in {
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options = {
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nix.sshServe = {
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enable = mkOption {
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description = "Whether to enable serving the nix store over ssh.";
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default = false;
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type = types.bool;
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};
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};
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};
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config = mkIf config.nix.sshServe.enable {
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users.extraUsers.nix-ssh = {
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description = "User for running nix-store --serve.";
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uid = config.ids.uids.nix-ssh;
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shell = pkgs.stdenv.shell;
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};
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services.openssh.enable = true;
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services.openssh.extraConfig = ''
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Match User nix-ssh
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AllowAgentForwarding no
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AllowTcpForwarding no
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PermitTTY no
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PermitTunnel no
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X11Forwarding no
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ForceCommand ${serveOnly}
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Match All
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'';
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};
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}
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