doc: add opencloud.md

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

example_configs/README.md

@@ -50,6 +50,7 @@ configuration files:
 - [Nexus](nexus.md)
 - [OCIS (OwnCloud Infinite Scale)](ocis.md)
 - [OneDev](onedev.md)
+- [OpenCloud](opencloud.md)
 - [Organizr](Organizr.md)
 - [Peertube](peertube.md)
 - [Penpot](penpot.md)

example_configs/opencloud.md

@@ -0,0 +1,55 @@
+# OpenCloud example config
+
+
+## About OpenCloud
+
+A light-weight file-hosting / webDAV service written in Go and forked from ownCloud Infinite Scale (oCIS).
+
+More information:
+  * https://opencloud.eu
+  * https://github.com/opencloud-eu
+
+
+## LLDAP Configuration
+
+OpenCloud ships an OIDC provider and a built-in LDAP server. It officially supports using a third-party OIDC provider.
+
+This is **not** what this config does. This config leaves the general auth/OIDC infrastructure in place, but replaces the LDAP server from underneath it with LLDAP.
+
+Configuration happens via environment variables. On FreeBSD, these are provided via `/usr/local/etc/opencloud/config.env`; on Linux you can provide them via the Docker configuration.
+
+
+```dotenv
+# Replace with actual IP and Port
+OC_LDAP_URI=ldap://<lldap_ip>:3890
+# Remove the following if you use LDAPS and your cert is not self-signed
+OC_LDAP_INSECURE="true"
+
+# Replace with your bind-user; can be in
+OC_LDAP_BIND_DN="cn=<bind_user>,ou=people,dc=example,dc=com"
+OC_LDAP_BIND_PASSWORD="<secret>"
+
+OC_LDAP_GROUP_BASE_DN="ou=groups,dc=example,dc=com"
+OC_LDAP_GROUP_SCHEMA_ID=entryuuid
+
+OC_LDAP_USER_BASE_DN="ou=people,dc=example,dc=com"
+OC_LDAP_USER_SCHEMA_ID=entryuuid
+
+# Only allow users from specific group to login; remove this if everyone's allowed
+OC_LDAP_USER_FILTER='(&(objectClass=person)(memberOf=cn=<opencloud_users>,ou=groups,dc=example,dc=com))'
+
+# Other options have not been tested
+OC_LDAP_DISABLE_USER_MECHANISM="none"
+
+# If you bind-user is in lldap_strict_readonly set to false (this hides "forgot password"-buttons)
+OC_LDAP_SERVER_WRITE_ENABLED="false"
+# If your bind-user can change passwords:
+OC_LDAP_SERVER_WRITE_ENABLED="true"       # Not tested, yet!
+
+# Don't start built-in LDAP, because it's replaced by LLDAP
+OC_EXCLUDE_RUN_SERVICES="idm"
+```
+
+There is currently no (documented) way to give an LDAP user (or group) admin rights in OpenCloud.
+
+See also [the official LDAP documentation](https://github.com/opencloud-eu/opencloud/blob/main/devtools/deployments/opencloud_full/ldap.yml).

example_configs/stalwart.md

@@ -48,3 +48,13 @@ To integrate with LLDAP,
       allow-invalid-certs = true
       enable = false
 ```
+
+## Email alias
+If you want to enable [email aliases](https://stalw.art/docs/mta/inbound/rcpt/#catch-all-addresses), you have to create a new *User-defined attribute* under *User schema* of type string. Currently, LLDAP doesn't support multi-value filters. If you want multiple aliases, you will have to create multiple attributes (`mailAlias1`, `mailAlias2`, ..., `mailAliasN`), where `N` is the maximum number of aliases an account will have.
+
+You also need to change your ldap filter for emails.
+```toml
+[directory.ldap.filter]
+# Add one clause per alias attribute you created (example: mailAlias1..mailAlias3)
+email = "(&(objectclass=person)(|(mail=?)(mailAlias1=?)(mailAlias2=?)(mailAlias3=?)))"
+```