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|
{
lib,
config,
pkgs,
...
}: let
mkVirtualHostDisplay = name: value: let
aliases =
if value.serverAliases != []
then
": "
+ builtins.concatStringsSep " " value.serverAliases
else "";
in ''
${name}${aliases}
'';
vHosts = builtins.concatStringsSep "" (builtins.attrValues (builtins.mapAttrs mkVirtualHostDisplay config.services.nginx.virtualHosts));
mkOpenPortDisplay = mode: port: let
checkEnabled = service: name:
if config.vhack.${service}.enable
then name
else "<port is '${name}' but service 'vhack.${service}' is not enabled.>";
mappings = {
"22" = checkEnabled "openssh" "ssh";
"80" = checkEnabled "nginx" "http";
"443" = checkEnabled "nginx" "https";
"24" = checkEnabled "mail" "mail-lmtp";
"465" = checkEnabled "mail" "mail-smtp-tls";
"25" = checkEnabled "mail" "mail-smtp";
"993" = checkEnabled "mail" "mail-imap-tls";
"995" = checkEnabled "mail" "mail-pop3-tls";
# TODO(@bpeetz): Check which service opens these ports: <2025-01-28>
"64738" = "???";
};
in ''
${mode} ${builtins.toString port}: ${mappings.${builtins.toString port}}
'';
# TODO(@bpeetz): This should probably also include the allowed TCP/UDP port ranges. <2025-01-28>
openTCPPorts = builtins.concatStringsSep "" (builtins.map (mkOpenPortDisplay "TCP") config.networking.firewall.allowedTCPPorts);
openUDPPorts = builtins.concatStringsSep "" (builtins.map (mkOpenPortDisplay "UDP") config.networking.firewall.allowedUDPPorts);
markdown = pkgs.writeText "${config.networking.hostName}-system-info.md" ''
## Virtual Hosts
${vHosts}
## Open ports
${openTCPPorts}
${openUDPPorts}
'';
in {
options.vhack.system-info = {
markdown = lib.mkOption {
type = lib.types.package;
description = ''
A derivation, that builds a markdown file, showing relevant system
information for this host.
'';
readOnly = true;
};
};
config.vhack.system-info = {
inherit markdown;
};
}
|
