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|
import ./make-test-python.nix {
name = "opensmtpd";
nodes = {
smtp1 =
{ pkgs, ... }:
{
imports = [ common/user-account.nix ];
networking = {
firewall.allowedTCPPorts = [ 25 ];
useDHCP = false;
interfaces.eth1.ipv4.addresses = pkgs.lib.mkOverride 0 [
{
address = "192.168.1.1";
prefixLength = 24;
}
];
};
environment.systemPackages =
let
testSendmail = pkgs.writeScriptBin "test-sendmail" ''
#!/bin/sh
set -euxo pipefail
echo "========= SENDING" >&2
${pkgs.system-sendmail}/bin/sendmail -v -f alice@smtp1 bob@smtp2 >&2 <<EOF
From: alice@smtp1
To: bob@smtp2
Subject: Sendmail Test
Hello World
EOF
echo "=========== FINISHED SENDING" >&2
'';
in
[
pkgs.opensmtpd
testSendmail
];
services.opensmtpd = {
enable = true;
extraServerArgs = [ "-v" ];
serverConfiguration = ''
listen on 0.0.0.0
action relay_smtp2 relay host "smtp://192.168.1.2"
match from any for any action relay_smtp2
'';
};
};
smtp2 =
{ config, pkgs, ... }:
{
imports = [ common/user-account.nix ];
networking = {
firewall.allowedTCPPorts = [
25
143
];
useDHCP = false;
interfaces.eth1.ipv4.addresses = pkgs.lib.mkOverride 0 [
{
address = "192.168.1.2";
prefixLength = 24;
}
];
};
environment.systemPackages = [ pkgs.opensmtpd ];
services.opensmtpd = {
enable = true;
extraServerArgs = [ "-v" ];
serverConfiguration = ''
listen on 0.0.0.0
action dovecot_deliver mda \
"${config.services.dovecot2.package}/libexec/dovecot/deliver -d %{user.username}"
match from any for local action dovecot_deliver
'';
};
services.dovecot2 = {
enable = true;
enablePAM = true;
settings = {
dovecot_config_version = "2.4.3";
dovecot_storage_version = config.services.dovecot2.package.version;
mail_driver = "maildir";
mail_path = "~/mail";
protocols.imap = true;
auth_allow_cleartext = true;
};
};
};
client =
{ pkgs, ... }:
{
networking = {
useDHCP = false;
interfaces.eth1.ipv4.addresses = pkgs.lib.mkOverride 0 [
{
address = "192.168.1.3";
prefixLength = 24;
}
];
};
environment.systemPackages =
let
sendTestMail = pkgs.writeScriptBin "send-a-test-mail" ''
#!${pkgs.python3.interpreter}
import smtplib, sys
with smtplib.SMTP('192.168.1.1') as smtp:
smtp.sendmail('alice@smtp1', 'bob@smtp2', """
From: alice@smtp1
To: bob@smtp2
Subject: Test
Hello World
""")
'';
checkMailLanded = pkgs.writeScriptBin "check-mail-landed" ''
#!${pkgs.python3.interpreter}
import imaplib
with imaplib.IMAP4('192.168.1.2', 143) as imap:
imap.login('bob', 'foobar')
imap.select()
status, refs = imap.search(None, 'ALL')
assert status == 'OK'
assert len(refs) == 1 and refs[0] != ""
status, msg = imap.fetch(refs[0], '(BODY[TEXT])')
assert status == 'OK'
content = msg[0][1]
print("===> content:", content)
split = content.split(b'\r\n')
print("===> split:", split)
split.reverse()
lastline = next(filter(lambda x: x != b"", map(bytes.strip, split)))
print("===> lastline:", lastline)
assert lastline.strip() == b'Hello World'
imap.store(refs[0], '+FLAGS', '\\Deleted')
imap.expunge()
'';
in
[
sendTestMail
checkMailLanded
];
};
};
testScript = ''
start_all()
client.systemctl("start network-online.target")
client.wait_for_unit("network-online.target")
smtp1.wait_for_unit("opensmtpd")
smtp2.wait_for_unit("opensmtpd")
smtp2.wait_for_unit("dovecot")
# To prevent sporadic failures during daemon startup, make sure
# services are listening on their ports before sending requests
smtp1.wait_for_open_port(25)
smtp2.wait_for_open_port(25)
smtp2.wait_for_open_port(143)
client.succeed("send-a-test-mail")
smtp1.wait_until_fails("smtpctl show queue | egrep .")
smtp2.wait_until_fails("smtpctl show queue | egrep .")
client.succeed("check-mail-landed >&2")
smtp1.succeed("test-sendmail")
smtp1.wait_until_fails("smtpctl show queue | egrep .")
smtp2.wait_until_fails("smtpctl show queue | egrep .")
client.succeed("check-mail-landed >&2")
'';
meta.timeout = 1800;
}
|
