nixpkgs/nixos/modules/programs/proxychains.nix
2021-10-04 12:47:20 +02:00

166 lines
4.5 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.proxychains;
configFile = ''
${cfg.chain.type}_chain
${optionalString (cfg.chain.type == "random")
"chain_len = ${builtins.toString cfg.chain.length}"}
${optionalString cfg.proxyDNS "proxy_dns"}
${optionalString cfg.quietMode "quiet_mode"}
remote_dns_subnet ${builtins.toString cfg.remoteDNSSubnet}
tcp_read_time_out ${builtins.toString cfg.tcpReadTimeOut}
tcp_connect_time_out ${builtins.toString cfg.tcpConnectTimeOut}
localnet ${cfg.localnet}
[ProxyList]
${builtins.concatStringsSep "\n"
(lib.mapAttrsToList (k: v: "${v.type} ${v.host} ${builtins.toString v.port}")
(lib.filterAttrs (k: v: v.enable) cfg.proxies))}
'';
proxyOptions = {
options = {
enable = mkEnableOption "this proxy";
type = mkOption {
type = types.enum [ "http" "socks4" "socks5" ];
description = "Proxy type.";
};
host = mkOption {
type = types.str;
description = "Proxy host or IP address.";
};
port = mkOption {
type = types.port;
description = "Proxy port";
};
};
};
in {
###### interface
options = {
programs.proxychains = {
enable = mkEnableOption "installing proxychains configuration";
chain = {
type = mkOption {
type = types.enum [ "dynamic" "strict" "random" ];
default = "strict";
description = ''
<literal>dynamic</literal> - Each connection will be done via chained proxies
all proxies chained in the order as they appear in the list
at least one proxy must be online to play in chain
(dead proxies are skipped)
otherwise <literal>EINTR</literal> is returned to the app.
<literal>strict</literal> - Each connection will be done via chained proxies
all proxies chained in the order as they appear in the list
all proxies must be online to play in chain
otherwise <literal>EINTR</literal> is returned to the app.
<literal>random</literal> - Each connection will be done via random proxy
(or proxy chain, see <option>programs.proxychains.chain.length</option>) from the list.
'';
};
length = mkOption {
type = types.nullOr types.int;
default = null;
description = ''
Chain length for random chain.
'';
};
};
proxyDNS = mkOption {
type = types.bool;
default = true;
description = "Proxy DNS requests - no leak for DNS data.";
};
quietMode = mkEnableOption "Quiet mode (no output from the library).";
remoteDNSSubnet = mkOption {
type = types.enum [ 10 127 224 ];
default = 224;
description = ''
Set the class A subnet number to use for the internal remote DNS mapping, uses the reserved 224.x.x.x range by default.
'';
};
tcpReadTimeOut = mkOption {
type = types.int;
default = 15000;
description = "Connection read time-out in milliseconds.";
};
tcpConnectTimeOut = mkOption {
type = types.int;
default = 8000;
description = "Connection time-out in milliseconds.";
};
localnet = mkOption {
type = types.str;
default = "127.0.0.0/255.0.0.0";
description = "By default enable localnet for loopback address ranges.";
};
proxies = mkOption {
type = types.attrsOf (types.submodule proxyOptions);
description = ''
Proxies to be used by proxychains.
'';
example = literalExpression ''
{ myproxy =
{ type = "socks4";
host = "127.0.0.1";
port = 1337;
};
}
'';
};
};
};
###### implementation
meta.maintainers = with maintainers; [ sorki ];
config = mkIf cfg.enable {
assertions = singleton {
assertion = cfg.chain.type != "random" && cfg.chain.length == null;
message = ''
Option `programs.proxychains.chain.length`
only makes sense with `programs.proxychains.chain.type` = "random".
'';
};
programs.proxychains.proxies = mkIf config.services.tor.client.enable
{
torproxy = mkDefault {
enable = true;
type = "socks4";
host = "127.0.0.1";
port = 9050;
};
};
environment.etc."proxychains.conf".text = configFile;
environment.systemPackages = [ pkgs.proxychains ];
};
}