letsencrypt-domain-validation case sensitivity

[giggsey]

Affected Puppet, Ruby, OS and module versions/distributions

• Puppet: 6.25
• Ruby: 2.5.9
• Distribution: CentOS 7 + AlmaLinux 9
• Module version: 8.0.2

How to reproduce (e.g Puppet code you use)

$::fqdn = 'TEST-BOX-1.example.com'

letsencrypt::certonly { 'example':
    domains              => [$::fqdn, 'mydomain.example.com'],
}

What are you seeing

The certificate gets created with test-box-1.example.com,mydomain.example.com.

But when the letsencrypt-domain-validation script runs as part of the unless:

Debug: Exec[letsencrypt certonly postfix](provider=shell): Executing check '["/bin/sh", "-c", "/usr/local/sbin/letsencrypt-domain-validation /etc/letsencrypt/live/example/cert.pem 'TEST-BOX-1.example.com' 'mydomain.example.com'"]'

This fails because the domains in the certificate do not match the input (due to case sensitivity)

What behaviour did you expect instead

The script should convert input to lowercase