nixpkgs/nixos/tests/acme.nix
Lucas Savva 75fa8027eb
nixos/acme: Update release note, remove redundant requires
Merge remote-tracking branch 'remotes/upstream/master'
2020-02-09 16:31:07 +00:00

218 lines
8.5 KiB
Nix

let
commonConfig = ./common/letsencrypt/common.nix;
dnsScript = {writeScript, dnsAddress, bash, curl}: writeScript "dns-hook.sh" ''
#!${bash}/bin/bash
set -euo pipefail
echo '[INFO]' "[$2]" 'dns-hook.sh' $*
if [ "$1" = "present" ]; then
${curl}/bin/curl --data '{"host": "'"$2"'", "value": "'"$3"'"}' http://${dnsAddress}:8055/set-txt
else
${curl}/bin/curl --data '{"host": "'"$2"'"}' http://${dnsAddress}:8055/clear-txt
fi
'';
in import ./make-test-python.nix {
name = "acme";
nodes = rec {
letsencrypt = { nodes, lib, ... }: {
imports = [ ./common/letsencrypt ];
networking.nameservers = lib.mkForce [
nodes.dnsserver.config.networking.primaryIPAddress
];
};
dnsserver = { nodes, pkgs, ... }: {
networking.firewall.allowedTCPPorts = [ 8055 53 ];
networking.firewall.allowedUDPPorts = [ 53 ];
systemd.services.pebble-challtestsrv = {
enable = true;
description = "Pebble ACME challenge test server";
wantedBy = [ "network.target" ];
serviceConfig = {
ExecStart = "${pkgs.pebble}/bin/pebble-challtestsrv -dns01 ':53' -defaultIPv6 '' -defaultIPv4 '${nodes.webserver.config.networking.primaryIPAddress}'";
# Required to bind on privileged ports.
User = "root";
Group = "root";
};
};
};
acmeStandalone = { nodes, lib, config, pkgs, ... }: {
imports = [ commonConfig ];
networking.nameservers = lib.mkForce [
nodes.dnsserver.config.networking.primaryIPAddress
];
networking.firewall.allowedTCPPorts = [ 80 ];
security.acme = {
server = "https://acme-v02.api.letsencrypt.org/dir";
certs."standalone.com" = {
webroot = "/var/lib/acme/acme-challenges";
};
};
systemd.targets."acme-finished-standalone.com" = {};
systemd.services."acme-standalone.com" = {
wants = [ "acme-finished-standalone.com.target" ];
before = [ "acme-finished-standalone.com.target" ];
};
services.nginx.enable = true;
services.nginx.virtualHosts."standalone.com" = {
locations."/.well-known/acme-challenge".root = "/var/lib/acme/acme-challenges";
};
};
webserver = { nodes, config, pkgs, lib, ... }: {
imports = [ commonConfig ];
networking.firewall.allowedTCPPorts = [ 80 443 ];
networking.nameservers = lib.mkForce [
nodes.dnsserver.config.networking.primaryIPAddress
];
# A target remains active. Use this to probe the fact that
# a service fired eventhough it is not RemainAfterExit
systemd.targets."acme-finished-a.example.com" = {};
systemd.services."acme-a.example.com" = {
wants = [ "acme-finished-a.example.com.target" ];
before = [ "acme-finished-a.example.com.target" ];
};
services.nginx.enable = true;
services.nginx.virtualHosts."a.example.com" = {
enableACME = true;
forceSSL = true;
locations."/".root = pkgs.runCommand "docroot" {} ''
mkdir -p "$out"
echo hello world > "$out/index.html"
'';
};
security.acme.server = "https://acme-v02.api.letsencrypt.org/dir";
nesting.clone = [
({pkgs, ...}: {
systemd.targets."acme-finished-b.example.com" = {};
systemd.services."acme-b.example.com" = {
wants = [ "acme-finished-b.example.com.target" ];
before = [ "acme-finished-b.example.com.target" ];
after = [ "nginx.service" ];
};
services.nginx.virtualHosts."b.example.com" = {
enableACME = true;
forceSSL = true;
locations."/".root = pkgs.runCommand "docroot" {} ''
mkdir -p "$out"
echo hello world > "$out/index.html"
'';
};
})
({pkgs, config, nodes, lib, ...}: {
security.acme.certs."example.com" = {
domain = "*.example.com";
dnsProvider = "exec";
dnsPropagationCheck = false;
credentialsFile = with pkgs; writeText "wildcard.env" ''
EXEC_PATH=${dnsScript { inherit writeScript bash curl; dnsAddress = nodes.dnsserver.config.networking.primaryIPAddress; }}
'';
user = config.services.nginx.user;
group = config.services.nginx.group;
};
systemd.targets."acme-finished-example.com" = {};
systemd.services."acme-example.com" = {
wants = [ "acme-finished-example.com.target" ];
before = [ "acme-finished-example.com.target" "nginx.service" ];
wantedBy = [ "nginx.service" ];
};
services.nginx.virtualHosts."c.example.com" = {
forceSSL = true;
sslCertificate = config.security.acme.certs."example.com".directory + "/cert.pem";
sslTrustedCertificate = config.security.acme.certs."example.com".directory + "/full.pem";
sslCertificateKey = config.security.acme.certs."example.com".directory + "/key.pem";
locations."/".root = pkgs.runCommand "docroot" {} ''
mkdir -p "$out"
echo hello world > "$out/index.html"
'';
};
})
];
};
client = {nodes, lib, ...}: {
imports = [ commonConfig ];
networking.nameservers = lib.mkForce [
nodes.dnsserver.config.networking.primaryIPAddress
];
};
};
testScript = {nodes, ...}:
let
newServerSystem = nodes.webserver.config.system.build.toplevel;
switchToNewServer = "${newServerSystem}/bin/switch-to-configuration test";
in
# Note, wait_for_unit does not work for oneshot services that do not have RemainAfterExit=true,
# this is because a oneshot goes from inactive => activating => inactive, and never
# reaches the active state. To work around this, we create some mock target units which
# get pulled in by the oneshot units. The target units linger after activation, and hence we
# can use them to probe that a oneshot fired. It is a bit ugly, but it is the best we can do
''
client.start()
dnsserver.start()
letsencrypt.wait_for_unit("default.target")
dnsserver.wait_for_unit("pebble-challtestsrv.service")
client.succeed(
'curl --data \'{"host": "acme-v02.api.letsencrypt.org", "addresses": ["${nodes.letsencrypt.config.networking.primaryIPAddress}"]}\' http://${nodes.dnsserver.config.networking.primaryIPAddress}:8055/add-a'
)
client.succeed(
'curl --data \'{"host": "standalone.com", "addresses": ["${nodes.acmeStandalone.config.networking.primaryIPAddress}"]}\' http://${nodes.dnsserver.config.networking.primaryIPAddress}:8055/add-a'
)
letsencrypt.start()
acmeStandalone.start()
letsencrypt.wait_for_unit("default.target")
letsencrypt.wait_for_unit("pebble.service")
with subtest("can request certificate with HTTPS-01 challenge"):
acmeStandalone.wait_for_unit("default.target")
acmeStandalone.succeed("systemctl start acme-standalone.com.service")
acmeStandalone.wait_for_unit("acme-finished-standalone.com.target")
client.wait_for_unit("default.target")
client.succeed("curl https://acme-v02.api.letsencrypt.org:15000/roots/0 > /tmp/ca.crt")
client.succeed(
"curl https://acme-v02.api.letsencrypt.org:15000/intermediate-keys/0 >> /tmp/ca.crt"
)
with subtest("Can request certificate for nginx service"):
webserver.wait_for_unit("acme-finished-a.example.com.target")
client.succeed(
"curl --cacert /tmp/ca.crt https://a.example.com/ | grep -qF 'hello world'"
)
with subtest("Can add another certificate for nginx service"):
webserver.succeed(
"/run/current-system/fine-tune/child-1/bin/switch-to-configuration test"
)
webserver.wait_for_unit("acme-finished-b.example.com.target")
client.succeed(
"curl --cacert /tmp/ca.crt https://b.example.com/ | grep -qF 'hello world'"
)
with subtest("Can request wildcard certificates using DNS-01 challenge"):
webserver.succeed(
"${switchToNewServer}"
)
webserver.succeed(
"/run/current-system/fine-tune/child-2/bin/switch-to-configuration test"
)
webserver.wait_for_unit("acme-finished-example.com.target")
client.succeed(
"curl --cacert /tmp/ca.crt https://c.example.com/ | grep -qF 'hello world'"
)
'';
}