From 9bb5248dab5fafc7e999ec92667b8dba8a5cc644 Mon Sep 17 00:00:00 2001
From: Dirk Engling <erdgeist@erdgeist.org>
Date: Thu, 2 Jan 2025 03:42:39 +0100
Subject: bring the blog up to date

---
 stories/projects/elektropost.rst | 46 ++++++++++++++++++++++++++++++++++------
 1 file changed, 40 insertions(+), 6 deletions(-)

(limited to 'stories/projects/elektropost.rst')

diff --git a/stories/projects/elektropost.rst b/stories/projects/elektropost.rst
index 1a04345..cedd7f7 100644
--- a/stories/projects/elektropost.rst
+++ b/stories/projects/elektropost.rst
@@ -4,7 +4,7 @@
 .. date: 2014/02/01 19:10:08
 .. title: elektropost
 .. subtitle: a FreeBSD jail based mail server project.
-.. slug: ../arts/software/elektropost/index
+.. slug: ../arts/software/elektropost
 .. prio: 750
 
 .. contents::
@@ -70,7 +70,7 @@ Install dovecot
 ===============
 
 * ``make install`` in /usr/ports/mail/dovecot
-* choose option VPOPMAIL, keep the rest (maybe disable IPV6)
+* choose option LUA, keep the rest (maybe disable IPV6)
 * ``echo 'dovecot_enable="YES"' >> /etc/rc.conf``
 
 ----
@@ -78,7 +78,7 @@ Install dovecot
 Configure dovecot
 =================
 
-* ``cp /usr/local/etc/dovecot-example.conf /usr/local/etc/dovecot.conf``
+* ``cp /usr/local/etc/dovecot/dovecot-example.conf /usr/local/etc/dovecot/dovecot.conf``
 * Change: protocols = imap imaps pop3s
 * Change: listen = and ssl_listen = to match your ip addresses
 * Change: ssl_cert_file = /var/qmail/control/servercert.pem
@@ -88,9 +88,43 @@ Configure dovecot
 * Change: first_valid_gid = 1
 * Change: max_mail_processes = 1024
 * Change: auth_username_format = %Ln@%Ld
-* Change: #passdb pam { and #} if you do not have local user mail
-* Change: #userdb passwd { and #} if you do not have local user mail
-* Change: userdb vpopmail { and } to use vpopmail's vchkpw
+* Change::
+
+    passdb {
+        driver = lua
+        args = file=/usr/local/etc/dovecot/auth.lua blocking=yes # default is yes
+    }
+    userdb {
+        driver = lua
+        args = file=/usr/local/etc/dovecot/auth.lua blocking=yes # default is yes
+        }
+
+Install the file http://erdgeist.org/arts/software/Code/elektropost/auth.lua in ``/usr/local/etc/dovecot/``,
+
+.. code-block::
+
+    function auth_password_verify(req, pass)
+     local handle = io.popen("/usr/local/vpopmail/bin/vuserinfo -p "..req.user)
+     local result = handle:read("*a")
+     handle:close()
+
+     local epass = result:match "^%s*(.-)%s*$"
+     if req:password_verify("{MD5-CRYPT}"..epass,pass) > 0 then
+       return dovecot.auth.PASSDB_RESULT_OK, {}
+     end
+     return dovecot.auth.PASSDB_RESULT_PASSWORD_MISMATCH, {}
+    end
+
+    function auth_userdb_lookup(req)
+     local handle = io.popen("/usr/local/vpopmail/bin/vuserinfo -d "..req.user)
+     local result = handle:read("*a")
+     handle:close()
+
+     if result:find("no such user") ~= nil then
+      return dovecot.auth.USERDB_RESULT_USER_UNKNOWN, "no such user"
+     end
+     return dovecot.auth.USERDB_RESULT_OK, "uid=vpopmail gid=vchkpw home="..result:match "^%s*(.-)%s*$"
+    end
 
 ----
 
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