Generic EPP with DNSsec Registrar Module for WHMCS

Generic EPP with DNSsec Registry-Registrar Module for WHMCS >= 7.7.1

# Generic EPP module for WHMCS which provide full functionality coverage for domains management and based on communication with Registry through Extensible Provisioning Protocol (EPP).
# EPP: RFC 5730, 5731, 5732, 5733, 5734, 5910
# this module it is working with https://www.rrpproxy.net/ (https://www.rrpproxy.net/API/EPP), http://www.udr.hk.com/registry, also you can create your own Registry using Open Source EPP Server https://sourceforge.net/projects/epp-server/

Installation steps

# Upload via FTP the 'genericepp' directory to <whmcs_root>/modules/registrars/
# Set write permissions for log file <whmcs_root>/modules/registrars/genericepp/log/genericepp.log

Generate .PEM certificate

# create .pfx file 
# openssl pkcs12 -export -out certificate.pfx -inkey www.yourdomain.com.key -in yourdomain.com.crt -certfile CA_bundle.crt 
openssl pkcs12 -export -out certificate.pfx -inkey /etc/pki/tls/private/www.yourdomain.com.key -in /etc/pki/tls/certs/yourdomain.com.crt -certfile /etc/pki/tls/certs/gd_bundle.crt 

# create PEM file 

# include PassPhrase 
openssl pkcs12 -in certificate.pfx -out certificate.cer -nodes 

# or 
# without PassPhrase 
openssl pkcs12 -in certificate.pfx -out certificate.cer 

Upload certificates

# Copy certificate.cer to <whmcs_root>/modules/registrars/genericepp/local_cert/certificate.cer
# Copy www.yourdomain.com.key to <whmcs_root>/modules/registrars/genericepp/local_pk/www.yourdomain.com.key
# Copy a certificate authority file to <whmcs_root>/modules/registrars/genericepp/cafile/

or you may use https://letsencrypt.org/

dnf install git net-tools
git clone https://github.com/certbot/certbot.git
cd certbot/
./letsencrypt-auto --help
systemctl stop httpd
./letsencrypt-auto certonly --standalone

Test connection with the server

# please make sure port 700 is not firewalled:
telnet epp-ote.nic.xy 700 
openssl s_client -showcerts -connect epp-ote.nic.xy:700 

# command line for acceptable client certificate CA names 
openssl s_client -showcerts -connect epp-ote.nic.xy:700 -CAfile gd_bundle.crt

# command line to verify your own Certificate 
openssl s_client -showcerts -connect epp-ote.nic.xy:700 -CAfile CA_bundle.crt -cert yourdomain.com.crt -key yourdomain.com.key

Add your whois server to the list, if not exist

# edit file <whmcs_root>/resources/domains/dist.whois.json
# check Not available text response on the whois server (No match for)
,
{
    "extensions": ".com.xy,.org.xy",
    "uri": "socket://whois.com.xy",
    "available": "No match for"
}

Configure Generic EPP module in WHMCS

# Login to WHMCS admin panel.
# Go to Setup > Products/Service > Domain registrars
# Activate Generic EPP module
# Configure module by providing EPP Server access credentials

Start using module

# Login to WHMCS admin panel.
# Go to Setup > Products/Service > Domain pricing
# Create ".yourtld" TLD and selectg "Genericepp" module in "Auto Registration" field
# Define your pricing for different registration/renewal terms