blob: 763283dfe7a22eee4f778f6222f8e47e7486e636 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.bind;
bindUser = "named";
confFile = pkgs.writeText "named.conf"
''
include "/etc/bind/rndc.key";
controls {
inet 127.0.0.1 allow {localhost;} keys {"rndc-key";};
};
acl cachenetworks { ${concatMapStrings (entry: " ${entry}; ") cfg.cacheNetworks} };
acl badnetworks { ${concatMapStrings (entry: " ${entry}; ") cfg.blockedNetworks} };
options {
listen-on { ${concatMapStrings (entry: " ${entry}; ") cfg.listenOn} };
listen-on-v6 { ${concatMapStrings (entry: " ${entry}; ") cfg.listenOnIpv6} };
allow-query { cachenetworks; };
blackhole { badnetworks; };
forward first;
forwarders { ${concatMapStrings (entry: " ${entry}; ") cfg.forwarders} };
directory "/var/run/named";
pid-file "/var/run/named/named.pid";
};
${cfg.extraConfig}
${ concatMapStrings
({ name, file, master ? true, slaves ? [], masters ? [] }:
''
zone "${name}" {
type ${if master then "master" else "slave"};
file "${file}";
${ if master then
''
allow-transfer {
${concatMapStrings (ip: "${ip};\n") slaves}
};
''
else
''
masters {
${concatMapStrings (ip: "${ip};\n") masters}
};
''
}
allow-query { any; };
};
'')
cfg.zones }
'';
in
{
###### interface
options = {
services.bind = {
enable = mkOption {
default = false;
description = "
Whether to enable BIND domain name server.
";
};
cacheNetworks = mkOption {
default = ["127.0.0.0/24"];
description = "
What networks are allowed to use us as a resolver.
";
};
blockedNetworks = mkOption {
default = [];
description = "
What networks are just blocked.
";
};
ipv4Only = mkOption {
default = false;
description = "
Only use ipv4, even if the host supports ipv6.
";
};
forwarders = mkOption {
default = config.networking.nameservers;
description = "
List of servers we should forward requests to.
";
};
listenOn = mkOption {
default = ["any"];
type = types.listOf types.str;
description = "
Interfaces to listen on.
";
};
listenOnIpv6 = mkOption {
default = ["any"];
type = types.listOf types.str;
description = "
Ipv6 interfaces to listen on.
";
};
zones = mkOption {
default = [];
description = "
List of zones we claim authority over.
master=false means slave server; slaves means addresses
who may request zone transfer.
";
example = [{
name = "example.com";
master = false;
file = "/var/dns/example.com";
masters = ["192.168.0.1"];
slaves = [];
}];
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = "
Extra lines to be added verbatim to the generated named configuration file.
";
};
configFile = mkOption {
type = types.path;
default = confFile;
defaultText = "confFile";
description = "
Overridable config file to use for named. By default, that
generated by nixos.
";
};
};
};
###### implementation
config = mkIf config.services.bind.enable {
users.extraUsers = singleton
{ name = bindUser;
uid = config.ids.uids.bind;
description = "BIND daemon user";
};
systemd.services.bind = {
description = "BIND Domain Name Server";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
preStart = ''
mkdir -m 0755 -p /etc/bind
if ! [ -f "/etc/bind/rndc.key" ]; then
${pkgs.bind.out}/sbin/rndc-confgen -r /dev/urandom -c /etc/bind/rndc.key -u ${bindUser} -a -A hmac-sha256 2>/dev/null
fi
${pkgs.coreutils}/bin/mkdir -p /var/run/named
chown ${bindUser} /var/run/named
'';
serviceConfig = {
ExecStart = "${pkgs.bind.out}/sbin/named -u ${bindUser} ${optionalString cfg.ipv4Only "-4"} -c ${cfg.configFile} -f";
ExecReload = "${pkgs.bind.out}/sbin/rndc -k '/etc/bind/rndc.key' reload";
ExecStop = "${pkgs.bind.out}/sbin/rndc -k '/etc/bind/rndc.key' stop";
};
unitConfig.Documentation = "man:named(8)";
};
};
}
|