example_configs: add Nextcloud

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Valentin Tolmer 2022-09-10 12:44:35 +02:00 committed by nitnelave
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- [Jitsi Meet](example_configs/jitsi_meet.conf) - [Jitsi Meet](example_configs/jitsi_meet.conf)
- [KeyCloak](example_configs/keycloak.md) - [KeyCloak](example_configs/keycloak.md)
- [Matrix](example_configs/matrix_synapse.yml) - [Matrix](example_configs/matrix_synapse.yml)
- [Nextcloud](example_configs/nextcloud.md)
- [Organizr](example_configs/Organizr.md) - [Organizr](example_configs/Organizr.md)
- [Portainer](example_configs/portainer.md) - [Portainer](example_configs/portainer.md)
- [Seafile](example_configs/seafile.md) - [Seafile](example_configs/seafile.md)

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# Nextcloud LLDAP example config
## lldap users & groups
This example is using following users & groups in lldap :
* A technical user (ex: `ro_admin`), member of `lldap_strict_readonly` or `lldap_password_manager`
* Several accounts, members of `users` group will be authorized to log in Nextcloud (eg neither `admin` nor `ro_admin`)
* Some "application" groups, let's say `friends` and `family`: users in Nextcloud will be able to share files and view people in dynamic lists only to members of their own group(s)
## Nextcloud config : the cli way
TL;DR let's script it. The "user_ldap" application is shipped with default Nextcloud installation (at least using Docker official stable images), you just have to install & enable it :
```sh
occ app:install user_ldap
occ app:enable user_ldap
occ ldap:create-empty-config
# EDIT: domain
occ ldap:set-config s01 ldapHost "ldap://lldap.example.net."
occ ldap:set-config s01 ldapPort 3890
# EDIT: admin user
occ ldap:set-config s01 ldapAgentName "uid=ro_admin,ou=people,dc=example,dc=com"
# EDIT: password
occ ldap:set-config s01 ldapAgentPassword "password"
# EDIT: Base DN
occ ldap:set-config s01 ldapBase "dc=example,dc=com"
occ ldap:set-config s01 ldapBaseUsers "dc=example,dc=com"
occ ldap:set-config s01 ldapBaseGroups "dc=example,dc=com"
occ ldap:set-config s01 ldapConfigurationActive 1
occ ldap:set-config s01 ldapLoginFilter "(&(objectclass=person)(uid=%uid))"
# EDIT: users group, contains the users who can login to Nextcloud
occ ldap:set-config s01 ldapUserFilter "(&(objectclass=person)(memberOf=cn=users,ou=groups,dc=example,dc=com))"
occ ldap:set-config s01 ldapUserFilterMode 0
occ ldap:set-config s01 ldapUserFilterObjectclass person
occ ldap:set-config s01 turnOnPasswordChange 0
occ ldap:set-config s01 ldapCacheTTL 600
occ ldap:set-config s01 ldapExperiencedAdmin 0
occ ldap:set-config s01 ldapGidNumber gidNumber
# EDIT: list of application groups
occ ldap:set-config s01 ldapGroupFilter "(&(objectclass=groupOfUniqueNames)(|(cn=friends)(cn=family)))"
# EDIT: list of application groups
occ ldap:set-config s01 ldapGroupFilterGroups "friends;family"
occ ldap:set-config s01 ldapGroupFilterMode 0
occ ldap:set-config s01 ldapGroupDisplayName cn
occ ldap:set-config s01 ldapGroupFilterObjectclass groupOfUniqueNames
occ ldap:set-config s01 ldapGroupMemberAssocAttr uniqueMember
occ ldap:set-config s01 ldapLoginFilterEmail 0
occ ldap:set-config s01 ldapLoginFilterUsername 1
occ ldap:set-config s01 ldapMatchingRuleInChainState unknown
occ ldap:set-config s01 ldapNestedGroups 0
occ ldap:set-config s01 ldapPagingSize 500
occ ldap:set-config s01 ldapTLS 0
occ ldap:set-config s01 ldapUserAvatarRule default
occ ldap:set-config s01 ldapUserDisplayName displayname
occ ldap:set-config s01 ldapUserFilterMode 1
occ ldap:set-config s01 ldapUuidGroupAttribute auto
occ ldap:set-config s01 ldapUuidUserAttribute auto
```
With small amount of luck, you should be able to log in your nextcloud instance with LLDAP accounts in the `users` group.
## Nextcloud config : the GUI way
1. enable LDAP application (installed but not enabled by default)
2. setup your ldap server in Settings > Administration > LDAP / AD integration
3. setup Group limitations
### LDAP server config
Fill the LLDAP domain and port, DN + password of your technical account and base DN (as usual : change `example.com` by your own domain) :
![ldap configuration page](images/nextcloud_ldap_srv.png)
### Users tab
Select `person` as object class and then choose `Edit LDAP Query` : the `only from these groups` option is not functional.
We want only users from the `users` group to be allowed to log in Nextcloud :
```
(&(objectclass=person)(memberOf=cn=users,ou=groups,dc=example,dc=com))
```
![login configuration page](images/nextcloud_loginfilter.png)
You can check with `Verify settings and count users` that your filter is working properly (here your accounts `admin` and `ro_admin` will not be counted as users).
### Login attributes
Select `Edit LDAP Query` and enter :
```
(&(objectclass=person)(uid=%uid))
```
![login attributes page](images/nextcloud_login_attributes.png)
Enter a valid username in lldap and check if your filter is working.
### Groups
You can use the menus for this part : select `groupOfUniqueNames` in the first menu and check every group you want members to be allowed to view their group member / share files with.
![groups configuration page](images/nextcloud_groups.png)
The resulting LDAP filter could be simplified removing the first 'OR' condition (I think).
## Sharing restrictions
Go to Settings > Administration > Sharing and check following boxes :
* "Allow username autocompletion to users within the same groups"
* "Restrict users to only share with users in their groups"
![sharing options](images/nextcloud_sharing_options.png)