nixpkgs/nixos/tests/privoxy.nix

import ./make-test-python.nix (
  { lib, pkgs, ... }:

  let
    # Note: For some reason Privoxy can't issue valid
    # certificates if the CA is generated using gnutls :(
    certs = pkgs.runCommand "example-certs" { buildInputs = [ pkgs.openssl ]; } ''
      mkdir $out

      # generate CA keypair
      openssl req -new -nodes -x509 \
        -extensions v3_ca -keyout $out/ca.key \
        -out $out/ca.crt -days 365 \
        -subj "/O=Privoxy CA/CN=Privoxy CA"

      # generate server key/signing request
      openssl genrsa -out $out/server.key 3072
      openssl req -new -key $out/server.key \
        -out server.csr -sha256 \
        -subj "/O=An unhappy server./CN=example.com"

      # sign the request/generate the certificate
      openssl x509 -req -in server.csr -CA $out/ca.crt \
      -CAkey $out/ca.key -CAcreateserial -out $out/server.crt \
      -days 500 -sha256
    '';
  in

  {
    name = "privoxy";
    meta = with lib.maintainers; {
      maintainers = [ rnhmjoj ];
    };

    nodes.machine =
      { ... }:
      {
        services.nginx.enable = true;
        services.nginx.virtualHosts."example.com" = {
          addSSL = true;
          sslCertificate = "${certs}/server.crt";
          sslCertificateKey = "${certs}/server.key";
          locations."/".root = pkgs.writeTextFile {
            name = "bad-day";
            destination = "/how-are-you/index.html";
            text = "I've had a bad day!\n";
          };
          locations."/ads".extraConfig = ''
            return 200 "Hot Nixpkgs PRs in your area. Click here!\n";
          '';
        };

        services.privoxy = {
          enable = true;
          inspectHttps = true;
          settings = {
            ca-cert-file = "${certs}/ca.crt";
            ca-key-file = "${certs}/ca.key";
            debug = 65536;
          };
          userActions = ''
            {+filter{positive}}
            example.com

            {+block{Fake ads}}
            example.com/ads
          '';
          userFilters = ''
            FILTER: positive This is a filter example.
            s/bad/great/ig
          '';
        };

        security.pki.certificateFiles = [ "${certs}/ca.crt" ];

        networking.hosts."::1" = [ "example.com" ];
        networking.proxy.httpProxy = "http://localhost:8118";
        networking.proxy.httpsProxy = "http://localhost:8118";
      };

    nodes.machine_socks4 =
      { ... }:
      {
        services.privoxy = {
          enable = true;
          settings.forward-socks4 = "/ 127.0.0.1:9050 .";
        };
      };
    nodes.machine_socks4a =
      { ... }:
      {
        services.privoxy = {
          enable = true;
          settings.forward-socks4a = "/ 127.0.0.1:9050 .";
        };
      };
    nodes.machine_socks5 =
      { ... }:
      {
        services.privoxy = {
          enable = true;
          settings.forward-socks5 = "/ 127.0.0.1:9050 .";
        };
      };
    nodes.machine_socks5t =
      { ... }:
      {
        services.privoxy = {
          enable = true;
          settings.forward-socks5t = "/ 127.0.0.1:9050 .";
        };
      };

    testScript = ''
      with subtest("Privoxy is running"):
          machine.wait_for_unit("privoxy")
          machine.wait_for_open_port(8118)
          machine.succeed("curl -f http://config.privoxy.org")

      with subtest("Privoxy can filter http requests"):
          machine.wait_for_open_port(80)
          assert "great day" in machine.succeed(
              "curl -sfL http://example.com/how-are-you? | tee /dev/stderr"
          )

      with subtest("Privoxy can filter https requests"):
          machine.wait_for_open_port(443)
          assert "great day" in machine.succeed(
              "curl -sfL https://example.com/how-are-you? | tee /dev/stderr"
          )

      with subtest("Blocks are working"):
          machine.wait_for_open_port(443)
          machine.fail("curl -f https://example.com/ads 1>&2")
          machine.succeed("curl -f https://example.com/PRIVOXY-FORCE/ads 1>&2")

      with subtest("Temporary certificates are cleaned"):
          # Count current certificates
          machine.succeed("test $(ls /run/privoxy/certs | wc -l) -gt 0")
          # Forward in time 12 days, trigger the timer..
          machine.succeed("date -s \"$(date --date '12 days')\"")
          machine.systemctl("start systemd-tmpfiles-clean")
          # ...and count again
          machine.succeed("test $(ls /run/privoxy/certs | wc -l) -eq 0")

      with subtest("Privoxy supports socks upstream proxies"):
          for m in [machine_socks4, machine_socks4a, machine_socks5, machine_socks5t]:
              m.wait_for_unit("privoxy")
              m.wait_for_open_port(8118)
              # We expect a 503 error because the dummy upstream proxy is not reachable.
              # In issue #265654, instead privoxy segfaulted causing curl to exit with "Empty reply from server".
              m.succeed("http_proxy=http://localhost:8118 curl -v http://does-not-exist/ 2>&1 | grep 'HTTP/1.1 503'")
    '';
  }
)