81 lines
2.6 KiB
Nix
81 lines
2.6 KiB
Nix
# ISC DHCP/IPv4 server configuration
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{ hostName, inputs, config, lib, ... }:
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let
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dhcpNets =
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lib.filterAttrs (_: { dhcp, ... }:
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dhcp != null &&
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dhcp.server == hostName
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) config.site.net;
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enabled = builtins.length (builtins.attrNames dhcpNets) > 0;
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in
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{
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services.dhcpd4 = lib.optionalAttrs enabled {
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enable = true;
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interfaces = builtins.attrNames dhcpNets;
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extraConfig = ''
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${builtins.concatStringsSep "\n" (
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builtins.attrValues (
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builtins.mapAttrs (net: { dhcp, subnet4Net, subnet4Len, domainName, ...}:
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''
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ddns-update-style standard;
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key dyndns {
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algorithm hmac-sha256;
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secret ${inputs.zentralwerk-network-key.lib.dyndnsKey};
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};
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zone ${domainName}. {
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primary ${config.site.net.serv.hosts4.dns};
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primary6 ${config.site.net.serv.hosts6.dn42.dns};
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key dyndns;
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}
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${lib.concatMapStrings ({ name, dynamic, ... }:
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lib.optionalString (
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dynamic &&
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lib.hasSuffix ".in-addr.arpa" name
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) ''
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zone ${name}. {
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primary ${config.site.net.serv.hosts4.dns};
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primary6 ${config.site.net.serv.hosts6.dn42.dns};
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key dyndns;
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}
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''
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) config.site.dns.localZones}
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group {
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default-lease-time ${toString dhcp.time};
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max-lease-time ${toString dhcp.max-time};
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option routers ${config.site.net.${net}.hosts4.${builtins.replaceStrings [".${net}"] [""] dhcp.router}};
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option domain-name "${domainName}";
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option domain-name-servers 172.20.73.8, 9.9.9.9;
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ddns-domainname "${domainName}";
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subnet ${subnet4Net} netmask ${lib.netmasks.${toString subnet4Len}} {
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range ${dhcp.start} ${dhcp.end};
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}
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update-static-leases on;
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${builtins.concatStringsSep "\n" (
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builtins.attrValues (
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builtins.mapAttrs (addr: hwaddr:
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''
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host ${addr} {
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hardware ethernet ${hwaddr};
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fixed-address ${addr};
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}
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''
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) dhcp.fixed-hosts
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)
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)}
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}
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''
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) dhcpNets
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)
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)}
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'';
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};
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}
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