nixpkgs/nixos/modules/services/networking/i2pd.nix
2016-02-13 15:22:31 +01:00

259 lines
6.7 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.i2pd;
homeDir = "/var/lib/i2pd";
extip = "EXTIP=\$(${pkgs.curl}/bin/curl -sf \"http://jsonip.com\" | ${pkgs.gawk}/bin/awk -F'\"' '{print $4}')";
toOneZero = b: if b then "1" else "0";
mkEndpointOpt = name: addr: port: {
name = mkOption {
type = types.str;
default = name;
description = "The endpoint name.";
};
address = mkOption {
type = types.str;
default = addr;
description = "Bind address for ${name} endpoint. Default: " + addr;
};
port = mkOption {
type = types.int;
default = port;
description = "Bind port for ${name} endoint. Default: " + toString port;
};
};
commonTunOpts = let
i2cpOpts = {
length = mkOption {
type = types.int;
description = "Guaranteed minimum hops.";
default = 3;
};
quantity = mkOption {
type = types.int;
description = "Number of simultaneous tunnels.";
default = 5;
};
};
in name: {
outbound = i2cpOpts;
inbound = i2cpOpts;
crypto.tagsToSend = mkOption {
type = types.int;
description = "Number of ElGamal/AES tags to send.";
default = 40;
};
destination = mkOption {
type = types.str;
description = "Remote endpoint, I2P hostname or b32.i2p address.";
};
keys = mkOption {
type = types.str;
default = name + "-keys.dat";
description = "Keyset used for tunnel identity.";
};
} // mkEndpointOpt name "127.0.0.1" 0;
i2pdConf = pkgs.writeText "i2pd.conf" ''
ipv6 = ${toOneZero cfg.enableIPv6}
notransit = ${toOneZero cfg.notransit}
floodfill = ${toOneZero cfg.floodfill}
${if isNull cfg.port then "" else "port = ${toString cfg.port}"}
${flip concatMapStrings
(collect (proto: proto ? port && proto ? address && proto ? name) cfg.proto)
(proto: let portStr = toString proto.port; in ''
[${proto.name}]
address = ${proto.address}
port = ${toString proto.port}
'')
}
'';
i2pdTunnelConf = pkgs.writeText "i2pd-tunnels.conf" ''
${flip concatMapStrings
(collect (tun: tun ? port && tun ? destination) cfg.outTunnels)
(tun: let portStr = toString tun.port; in ''
[${tun.name}]
type = client
destination = ${tun.destination}
keys = ${tun.keys}
address = ${tun.address}
port = ${toString tun.port}
inbound.length = ${toString tun.inbound.length}
outbound.length = ${toString tun.outbound.length}
inbound.quantity = ${toString tun.inbound.quantity}
outbound.quantity = ${toString tun.outbound.quantity}
crypto.tagsToSend = ${toString tun.crypto.tagsToSend}
'')
}
${flip concatMapStrings
(collect (tun: tun ? port && tun ? host) cfg.inTunnels)
(tun: let portStr = toString tun.port; in ''
[${tun.name}]
type = server
destination = ${tun.destination}
keys = ${tun.keys}
host = ${tun.address}
port = ${tun.port}
inport = ${tun.inPort}
accesslist = ${concatStringSep "," tun.accessList}
'')
}
'';
i2pdSh = pkgs.writeScriptBin "i2pd" ''
#!/bin/sh
${if isNull cfg.extIp then extip else ""}
${pkgs.i2pd}/bin/i2pd --log=1 \
--host=${if isNull cfg.extIp then "$EXTIP" else cfg.extIp} \
--conf=${i2pdConf} \
--tunconf=${i2pdTunnelConf}
'';
in
{
###### interface
options = {
services.i2pd = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Enables I2Pd as a running service upon activation.
'';
};
extIp = mkOption {
type = with types; nullOr str;
default = null;
description = ''
Your external IP.
'';
};
notransit = mkOption {
type = types.bool;
default = false;
description = ''
Tells the router to not accept transit tunnels during startup.
'';
};
floodfill = mkOption {
type = types.bool;
default = false;
description = ''
If the router is declared to be unreachable and needs introduction nodes.
'';
};
port = mkOption {
type = with types; nullOr int;
default = null;
description = ''
I2P listen port. If no one is given the router will pick between 9111 and 30777.
'';
};
enableIPv6 = mkOption {
type = types.bool;
default = false;
description = ''
Enables IPv6 connectivity. Disabled by default.
'';
};
proto.http = mkEndpointOpt "http" "127.0.0.1" 7070;
proto.sam = mkEndpointOpt "sam" "127.0.0.1" 7656;
proto.bob = mkEndpointOpt "bob" "127.0.0.1" 2827;
proto.i2pControl = mkEndpointOpt "i2pcontrol" "127.0.0.1" 7650;
proto.httpProxy = mkEndpointOpt "httpproxy" "127.0.0.1" 4446;
proto.socksProxy = mkEndpointOpt "socksproxy" "127.0.0.1" 4447;
outTunnels = mkOption {
default = {};
type = with types; loaOf optionSet;
description = ''
Connect to someone as a client and establish a local accept endpoint
'';
options = [ ({ name, config, ... }: {
options = commonTunOpts name;
config = {
name = mkDefault name;
};
}) ];
};
inTunnels = mkOption {
default = {};
type = with types; loaOf optionSet;
description = ''
Serve something on I2P network at port and delegate requests to address inPort.
'';
options = [ ({ name, config, ... }: {
options = {
inPort = mkOption {
type = types.int;
default = 0;
description = "Service port. Default to the tunnel's listen port.";
};
accessList = mkOption {
type = with types; listOf str;
default = [];
description = "I2P nodes that are allowed to connect to this service.";
};
} // commonTunOpts name;
config = {
name = mkDefault name;
};
}) ];
};
};
};
###### implementation
config = mkIf cfg.enable {
users.extraUsers.i2pd = {
group = "i2pd";
description = "I2Pd User";
home = homeDir;
createHome = true;
uid = config.ids.uids.i2pd;
};
users.extraGroups.i2pd.gid = config.ids.gids.i2pd;
systemd.services.i2pd = {
description = "Minimal I2P router";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig =
{
User = "i2pd";
WorkingDirectory = homeDir;
Restart = "on-abort";
ExecStart = "${i2pdSh}/bin/i2pd";
};
};
};
}