imapauth

Vault Auth Plugin: IMAP Authentication Backend

This is a standalone backend plugin for use with Hashicorp Vault. This plugin allows users to authenticate using IMAP.

Getting Started

This is a Vault plugin and is meant to work with Vault. This guide assumes you have already installed Vault and have a basic understanding of how Vault works.

Otherwise, start with this guide on how to get started with Vault.

To learn specifically about how plugins work, see documentation on Vault plugins.

Usage

Enable the plugin

$ vault auth enable -path=imap vault-plugin-auth-imap
Success! Enabled vault-plugin-auth-imap auth method at: imap/

Configure the plugin

You can configure the plugin with the following parameters:

• imap_server
• imap_port ( Default: 993 )
• imap_ssl ( Default: true)

$ vault write auth/imap/config imap_server=imap.example.com

Create a role for authentication

So you can log in with your email and password, you need to create a role. A role can be limited to be valid only for certain accounts ( = email addresses )

$ vault write auth/imap/role/privileged-user-only token_policies=admin-policy pricinpals=my-email@example.com,another-mail@example.com

On the other hand, you can create a role that is valid for all accounts.

$ vault write auth/imap/role/readonly token_policies=readonly-policy

Using a role to log in with your email and password

Afterwards, you can use your email and password to log in by using an available role definition:

```shell
$ vault write auth/imap/login role=readonly username=my-email@example.com password=secret
Key                  Value
---                  -----
token                hvs.CAESICPJO73kqtz......
token_accessor       4s1lxJvhvKl9Oq6CbZuXEcpY
token_duration       768h
token_renewable      true
token_policies       ["default", "readonly-policy"]
identity_policies    []
policies             ["default", "readonly-policy"]
token_meta_role      readonly

Developing

If you wish to work on this plugin, you'll first need Go installed on your machine.

Next, clone this repository into vault-plugin-auth-imap.

To compile a development version of this plugin, run make build. This will put the plugin binary in the ./dist/ folders by using goreleaser.

Run make to start a development version of vault with this plugin.

Enable the auth plugin backend using the SSH auth plugin:

$ vault auth enable -path=imap vault-plugin-auth-imap
Success! Enabled vault-plugin-auth-imap auth method at: imap/

Dev setup

Look into the ./scripts/devsetup.sh script, this sets up a test environment to a mail server which is related to the environment variable MAILSERVER.