dns: abstracted away much of the dns logic into teh dns config file
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parent
6412a53070
commit
d683598060
4 changed files with 94 additions and 178 deletions
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@ -1,4 +1,4 @@
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{ lib, pkgs, config, ... }:
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{ lib, pkgs, config, nodes, ... }:
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let
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cfg = config.skynet_dns;
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@ -9,7 +9,7 @@ let
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get_config_file = (domain:
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''$TTL 60 ; 1 minute
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; hostmaster@${domain} is an email address that recieves stuff related to dns
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@ IN SOA ${cfg.own.nameserver}.${domain}. hostmaster.${domain}. (
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@ IN SOA ${nameserver}.${domain}. hostmaster.${domain}. (
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; Serial (YYYYMMDDCC) this has to be updated for each time the record is updated
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${current_date}
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600 ; Refresh (10 minutes)
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@ -31,14 +31,7 @@ let
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; ------------------------------------------
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; Server Names
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; ------------------------------------------
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; External addresses
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; ------------------------------------------
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${lib.strings.concatMapStrings (x: x + "\n") cfg.records.external}
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; this is fixed for now
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wintermute A 193.1.101.148
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${lib.strings.concatMapStrings (x: x + "\n") records.external}
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; internal addresses
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@ -49,7 +42,7 @@ wintermute A 193.1.101.148
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; cname's
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; ------------------------------------------
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${lib.strings.concatMapStrings (x: x + "\n") cfg.records.cname}
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${lib.strings.concatMapStrings (x: x + "\n") records.cname}
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''
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);
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@ -61,7 +54,7 @@ ${lib.strings.concatMapStrings (x: x + "\n") cfg.records.cname}
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''$ORIGIN 99.1.193.in-addr.arpa.
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$TTL 60 ; 1 minute
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; hostmaster@skynet.ie is an email address that recieves stuff related to dns
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@ IN SOA ${cfg.own.nameserver}.skynet.ie. hostmaster.skynet.ie. (
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@ IN SOA ${nameserver}.skynet.ie. hostmaster.skynet.ie. (
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; Serial (YYYYMMDDCC) this has to be updated for each time the record is updated
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${current_date}
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600 ; Refresh (10 minutes)
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@ -73,7 +66,7 @@ $TTL 60 ; 1 minute
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@ NS ns1.skynet.ie.
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@ NS ns2.skynet.ie.
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${lib.strings.concatMapStrings (x: x + "\n") cfg.records.reverse}
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${lib.strings.concatMapStrings (x: x + "\n") records.reverse}
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''
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);
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@ -81,7 +74,7 @@ ${lib.strings.concatMapStrings (x: x + "\n") cfg.records.reverse}
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get_config_file_old_domains = (domain:
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''$TTL 60 ; 1 minute
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; hostmaster@skynet.ie is an email address that recieves stuff related to dns
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@ IN SOA ${cfg.own.nameserver}.skynet.ie. hostmaster.skynet.ie. (
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@ IN SOA ${nameserver}.skynet.ie. hostmaster.skynet.ie. (
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; Serial (YYYYMMDDCC) this has to be updated for each time the record is updated
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${current_date}
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600 ; Refresh (10 minutes)
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@ -100,18 +93,18 @@ ${lib.strings.concatMapStrings (x: x + "\n") cfg.records.reverse}
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tmp1 = ["193.1.99.109"];
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tmp2 = ["193.1.99.120"];
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primaries = (if cfg.primary then
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primaries = (if cfg.server.primary then
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# primary servers have no primaries (ones they listen to)
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[]
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else
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if builtins.elem cfg.own.ip tmp1 then
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if builtins.elem cfg.server.ip tmp1 then
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tmp2
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else
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tmp1
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);
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secondaries = (if cfg.primary then
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if builtins.elem cfg.own.ip tmp1 then
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secondaries = (if cfg.server.primary then
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if builtins.elem cfg.server.ip tmp1 then
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tmp2
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else
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tmp1
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@ -158,7 +151,7 @@ ${extraConfig}
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// ${current_date}
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'';
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# really wish teh nixos config didnt use master/slave
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master = cfg.primary;
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master = cfg.server.primary;
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masters = primaries;
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slaves = secondaries;
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# need to write this to a file
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@ -176,7 +169,7 @@ ${extraConfig}
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extraConfig = {
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owned =
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if cfg.primary then
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if cfg.server.primary then
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''
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allow-update { key rfc2136key.skynet.ie.; };
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@ -192,6 +185,53 @@ inline-signing yes;
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old = "";
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};
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records = {
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# using the same logic as the firewall, comments there
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external = builtins.concatLists (
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lib.attrsets.mapAttrsToList (key: value:
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let
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details_server = value.config.skynet_dns.server;
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details_records = value.config.skynet_dns.records;
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in
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if builtins.hasAttr "skynet_dns" value.config
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then (
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if details_server.enable
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then (
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if details_server.primary
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then details_records.external ++ ["ns1 A ${details_server.ip}"]
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else details_records.external ++ ["ns2 A ${details_server.ip}"]
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)
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else details_records.external
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)
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else []
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) nodes
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);
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cname = builtins.concatLists (
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lib.attrsets.mapAttrsToList (key: value:
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let
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details_records = value.config.skynet_dns.records;
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in
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if builtins.hasAttr "skynet_dns" value.config
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then details_records.cname
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else []
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) nodes
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);
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reverse = builtins.concatLists (
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lib.attrsets.mapAttrsToList (key: value:
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let
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details_records = value.config.skynet_dns.records;
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in
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if builtins.hasAttr "skynet_dns" value.config
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then details_records.reverse
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else []
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) nodes
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);
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};
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nameserver = if cfg.server.primary then "ns1" else "ns2";
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in {
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imports = [
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@ -200,60 +240,26 @@ in {
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options = {
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skynet_dns = {
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enable = lib.mkEnableOption {
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default = false;
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example = true;
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description = "Skynet DNS";
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type = lib.types.bool;
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};
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server = {
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enable = lib.mkEnableOption {
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default = false;
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description = "Skynet DNS server";
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type = lib.types.bool;
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};
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primary = lib.mkOption {
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type = lib.types.bool;
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default = false;
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};
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primary = lib.mkOption {
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type = lib.types.bool;
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default = false;
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};
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own = {
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ip = lib.mkOption {
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type = lib.types.str;
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description = ''
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ip of this server
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'';
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};
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nameserver = lib.mkOption {
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default = "ns1";
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type = lib.types.str;
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description = ''
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the hostname of this nameserver, eg ns1, ns2
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'';
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};
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external = lib.mkOption {
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default = [ ];
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type = lib.types.listOf lib.types.str;
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description = ''
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External records like: agentjones A 193.1.99.72
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'';
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};
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cname = lib.mkOption {
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default = [ ];
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type = lib.types.listOf lib.types.str;
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description = ''
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External records like: ns1 CNAME ns1
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'';
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};
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reverse = lib.mkOption {
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default = [ ];
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type = lib.types.listOf lib.types.str;
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description = ''
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External records like: 20 IN PTR vigil
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'';
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};
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};
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records = {
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external = lib.mkOption {
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default = [ ];
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@ -283,12 +289,12 @@ in {
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};
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};
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config = lib.mkIf cfg.enable {
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config = lib.mkIf cfg.server.enable {
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# open the firewall for this
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skynet_firewall.forward = [
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"ip daddr ${cfg.own.ip} tcp dport 53 counter packets 0 bytes 0 accept"
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"ip daddr ${cfg.own.ip} udp dport 53 counter packets 0 bytes 0 accept"
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"ip daddr ${cfg.server.ip} tcp dport 53 counter packets 0 bytes 0 accept"
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"ip daddr ${cfg.server.ip} udp dport 53 counter packets 0 bytes 0 accept"
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];
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services.bind.zones =
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