cvm-vmailmgr

Credential Validation Modules

Install

All systems
curl cmd.cat/cvm-vmailmgr.sh
Debian Debian
apt-get install cvm
Ubuntu
apt-get install cvm
image/svg+xml Kali Linux
apt-get install cvm
Windows (WSL2)
sudo apt-get update sudo apt-get install cvm
Raspbian
apt-get install cvm

cvm

Credential Validation Modules

CVM is a framework for validating a set of credentials against a database using a filter program. The modules act as a filter, taking a set of credentials as input and writing a set of facts as output if those credentials are valid. Optional input is given to the module through environment variables. Some of the ideas for CVM came from experience with PAM (pluggable authentication modules), the checkpassword interface used by qmail-pop3d, and the "authmod" interface used by Courier IMAP and POP3. This framework places fewer restrictions on the invoking client than checkpassword does, and is much simpler to implement on both sides than PAM and the authmod framework. See http://untroubled.org/cvm/cvm.html for more information.