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nixos/bind: Allow to set extra options

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BIND doesn't allow the options section (or any section I'd guess) to be
defined more than once, so whenever you want to set an additional option
you're stuck using weird hacks like this:

services.bind.forwarders = lib.mkForce [ "}; empty-zones-enable no; #" ];

This basically exploits the fact that values coming from the module
options aren't escaped and thus works in a similar vain to how SQL
injection works.

Another option would be to just set configFile to a file that includes
all the options, including zones. That obviously makes the configuration
way less extensible and more awkward to use with the module system.

To make sure this change does work correctly I added a small test just
for that. The test could use some improvements, but better to have a
test rather than none at all. For a future improvement the test could be
merged with the NSD test, because both use the same zone file format.

This change has been reviewed in #40053 and after not getting any
opposition, I'm hereby adding this to master.

Signed-off-by: aszlig <aszlig@nix.build>
Cc: @peti, @edolstra
Closes: #40053
This commit is contained in:
aszlig 2018-05-07 03:05:30 +02:00
parent a7e93690af
commit 94bc38e6c1
No known key found for this signature in database
GPG Key ID: 684089CE67EBB691
3 changed files with 38 additions and 0 deletions
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10
nixos/modules/services/networking/bind.nix
View File

@ -27,6 +27,7 @@ let
forwarders { ${concatMapStrings (entry: " ${entry}; ") cfg.forwarders} };
directory "/var/run/named";
pid-file "/var/run/named/named.pid";
${cfg.extraOptions}
};
${cfg.extraConfig}
@ -141,6 +142,15 @@ in
";
};
extraOptions = mkOption {
type = types.lines;
default = "";
description = ''
Extra lines to be added verbatim to the options section of the
generated named configuration file.
'';
};
configFile = mkOption {
type = types.path;
default = confFile;

1
nixos/release.nix
View File

@ -248,6 +248,7 @@ in rec {
tests.avahi = callTest tests/avahi.nix {};
tests.beegfs = callTest tests/beegfs.nix {};
tests.bittorrent = callTest tests/bittorrent.nix {};
tests.bind = callTest tests/bind.nix {};
tests.blivet = callTest tests/blivet.nix {};
tests.boot = callSubTests tests/boot.nix {};
tests.boot-stage1 = callTest tests/boot-stage1.nix {};

27
nixos/tests/bind.nix Normal file
View File

@ -0,0 +1,27 @@
import ./make-test.nix {
name = "bind";
machine = { pkgs, lib, ... }: {
services.bind.enable = true;
services.bind.extraOptions = "empty-zones-enable no;";
services.bind.zones = lib.singleton {
name = ".";
file = pkgs.writeText "root.zone" ''
$TTL 3600
. IN SOA ns.example.org. admin.example.org. ( 1 3h 1h 1w 1d )
. IN NS ns.example.org.
ns.example.org. IN A 192.168.0.1
ns.example.org. IN AAAA abcd::1
1.0.168.192.in-addr.arpa IN PTR ns.example.org.
'';
};
};
testScript = ''
$machine->waitForUnit('bind.service');
$machine->waitForOpenPort(53);
$machine->succeed('host 192.168.0.1 127.0.0.1 | grep -qF ns.example.org');
'';
}