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cjdns: add peer hostnames to extraHosts, option for external config

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This commit is contained in:
Emery Hemingway 2014-10-21 13:16:04 -04:00
parent 70e0577886
commit a3338abcfe
2 changed files with 126 additions and 79 deletions
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11
nixos/modules/services/networking/cjdns-hosts.sh Normal file
View File

@ -0,0 +1,11 @@
pubs=($pubs)
hosts=($hosts)
lines="''\n"
for ((i = 0; i < ${#pubs[*]}; i++)); do
addr=$($cjdns/bin/publictoip6 ${pubs[i]})
lines="${lines}$addr ${hosts[i]}\n"
done
lines="${lines}''"
echo -ne $lines > $out

194
nixos/modules/services/networking/cjdns.nix
View File

@ -4,8 +4,46 @@ with lib;
let
pkg = pkgs.cjdns;
cfg = config.services.cjdns;
connectToSubmodule =
{ options, ... }:
{ options =
{ password = mkOption {
type = types.str;
description = "Authorized password to the opposite end of the tunnel.";
};
publicKey = mkOption {
type = types.str;
description = "Public key at the opposite end of the tunnel.";
};
hostname = mkOption {
default = "";
example = "foobar.hype";
type = types.str;
description = "Optional hostname to add to /etc/hosts; prevents reverse lookup failures.";
};
};
};
peers = mapAttrsToList (n: v: v) (cfg.ETHInterface.connectTo // cfg.UDPInterface.connectTo);
pubs = toString (map (p: if p.hostname == "" then "" else p.publicKey) peers);
hosts = toString (map (p: if p.hostname == "" then "" else p.hostname) peers);
cjdnsHosts =
if hosts != "" then
import (pkgs.stdenv.mkDerivation {
name = "cjdns-hosts";
builder = ./cjdns-hosts.sh;
inherit (pkgs) cjdns;
inherit pubs hosts;
})
else "";
# would be nice to merge 'cfg' with a //,
# but the json nesting is wacky.
cjdrouteConf = builtins.toJSON ( {
@ -44,7 +82,7 @@ in
enable = mkOption {
type = types.bool;
default = false;
default = false;
description = ''
Whether to enable the cjdns network encryption
and routing engine. A file at /etc/cjdns.keys will
@ -53,84 +91,80 @@ in
'';
};
confFile = mkOption {
type = types.str;
default = "";
example = "/etc/cjdroute.conf";
description = ''
Ignore all other cjdns options and load configuration from this file.
'';
};
authorizedPasswords = mkOption {
type = types.listOf types.str;
default = [ ];
example = [
default = [ ];
example = [
"snyrfgkqsc98qh1y4s5hbu0j57xw5s0"
"z9md3t4p45mfrjzdjurxn4wuj0d8swv"
"49275fut6tmzu354pq70sr5b95qq0vj"
"z9md3t4p45mfrjzdjurxn4wuj0d8swv"
"49275fut6tmzu354pq70sr5b95qq0vj"
];
description = ''
Any remote cjdns nodes that offer these passwords on
connection will be allowed to route through this node.
description = ''
Any remote cjdns nodes that offer these passwords on
connection will be allowed to route through this node.
'';
};
admin = {
bind = mkOption {
type = types.string;
default = "127.0.0.1:11234";
description = ''
default = "127.0.0.1:11234";
description = ''
Bind the administration port to this address and port.
'';
'';
};
};
UDPInterface = {
bind = mkOption {
type = types.string;
default = "";
default = "";
example = "192.168.1.32:43211";
description = ''
Address and port to bind UDP tunnels to.
'';
};
Address and port to bind UDP tunnels to.
'';
};
connectTo = mkOption {
type = types.attrsOf ( types.submodule (
{ options, ... }:
{ options = {
# TODO make host an option, and add it to networking.extraHosts
password = mkOption {
type = types.str;
description = "Authorized password to the opposite end of the tunnel.";
};
publicKey = mkOption {
type = types.str;
description = "Public key at the opposite end of the tunnel.";
};
};
}
));
default = { };
type = types.attrsOf ( types.submodule ( connectToSubmodule ) );
default = { };
example = {
"192.168.1.1:27313" = {
password = "5kG15EfpdcKNX3f2GSQ0H1HC7yIfxoCoImnO5FHM";
hostname = "homer.hype";
password = "5kG15EfpdcKNX3f2GSQ0H1HC7yIfxoCoImnO5FHM";
publicKey = "371zpkgs8ss387tmr81q04mp0hg1skb51hw34vk1cq644mjqhup0.k";
};
};
description = ''
Credentials for making UDP tunnels.
'';
};
Credentials for making UDP tunnels.
'';
};
};
ETHInterface = {
bind = mkOption {
default = "";
example = "eth0";
description = ''
Bind to this device for native ethernet operation.
'';
};
default = "";
example = "eth0";
description = ''
Bind to this device for native ethernet operation.
'';
};
beacon = mkOption {
type = types.int;
type = types.int;
default = 2;
description = ''
Auto-connect to other cjdns nodes on the same network.
Options:
0: Disabled.
0: Disabled.
1: Accept beacons, this will cause cjdns to accept incoming
beacon messages and try connecting to the sender.
2: Accept and send beacons, this will cause cjdns to broadcast
@ -142,32 +176,20 @@ in
};
connectTo = mkOption {
type = types.attrsOf ( types.submodule (
{ options, ... }:
{ options = {
password = mkOption {
type = types.str;
description = "Authorized password to the opposite end of the tunnel.";
};
publicKey = mkOption {
type = types.str;
description = "Public key at the opposite end of the tunnel.";
};
};
}
));
default = { };
type = types.attrsOf ( types.submodule ( connectToSubmodule ) );
default = { };
example = {
"01:02:03:04:05:06" = {
password = "5kG15EfpdcKNX3f2GSQ0H1HC7yIfxoCoImnO5FHM";
hostname = "homer.hype";
password = "5kG15EfpdcKNX3f2GSQ0H1HC7yIfxoCoImnO5FHM";
publicKey = "371zpkgs8ss387tmr81q04mp0hg1skb51hw34vk1cq644mjqhup0.k";
};
};
description = ''
Credentials for connecting look similar to UDP credientials
description = ''
Credentials for connecting look similar to UDP credientials
except they begin with the mac address.
'';
};
'';
};
};
};
@ -185,34 +207,48 @@ in
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
script = ''
source /etc/cjdns.keys
echo '${cjdrouteConf}' | sed \
-e "s/@CJDNS_ADMIN_PASSWORD@/$CJDNS_ADMIN_PASSWORD/g" \
-e "s/@CJDNS_PRIVATE_KEY@/$CJDNS_PRIVATE_KEY/g" \
| ${pkgs.cjdns}/bin/cjdroute
'';
script = (
if cfg.confFile != "" then "${pkg}/bin/cjdroute < ${cfg.confFile}" else
''
source /etc/cjdns.keys
echo '${cjdrouteConf}' | sed \
-e "s/@CJDNS_ADMIN_PASSWORD@/$CJDNS_ADMIN_PASSWORD/g" \
-e "s/@CJDNS_PRIVATE_KEY@/$CJDNS_PRIVATE_KEY/g" \
| ${pkg}/bin/cjdroute
''
);
serviceConfig = {
Type = "forking";
Restart = "on-failure";
Restart = "on-failure";
};
};
system.activationScripts.cjdns = ''
system.activationScripts.cjdns = if (cfg.confFile == "") then "" else ''
cjdnsWriteKeys() {
private=$1
ipv6=$2
public=$3
echo "CJDNS_PRIVATE_KEY=$1" >> /etc/cjdns.keys
echo -e "CJDNS_IPV6=$2\nCJDNS_PUBLIC_KEY=$3" > /etc/cjdns.public
chmod 600 /etc/cjdns.keys
chmod 444 /etc/cjdns.public
}
grep -q "CJDNS_PRIVATE_KEY=" /etc/cjdns.keys || \
echo "CJDNS_PRIVATE_KEY=$(${pkgs.cjdns}/bin/makekey)" \
>> /etc/cjdns.keys
cjdnsWriteKeys $(${pkg}/bin/makekeys)
grep -q "CJDNS_ADMIN_PASSWORD=" /etc/cjdns.keys || \
echo "CJDNS_ADMIN_PASSWORD=$(${pkgs.coreutils}/bin/head -c 96 /dev/urandom | ${pkgs.coreutils}/bin/tr -dc A-Za-z0-9)" \
>> /etc/cjdns.keys
chmod 600 /etc/cjdns.keys
echo "CJDNS_ADMIN_PASSWORD=$(${pkgs.coreutils}/bin/head -c 96 /dev/urandom | ${pkgs.coreutils}/bin/tr -dc A-Za-z0-9)" \
>> /etc/cjdns.keys
'';
networking.extraHosts = "${cjdnsHosts}";
assertions = [
{ assertion = ( cfg.ETHInterface.bind != "" || cfg.UDPInterface.bind != "" );
{ assertion = ( cfg.ETHInterface.bind != "" || cfg.UDPInterface.bind != "" || cfg.confFile == "" );
message = "Neither cjdns.ETHInterface.bind nor cjdns.UDPInterface.bind defined.";
}
{ assertion = config.networking.enableIPv6;