contacts menu doesn't find / list all users (with external user backend webdav)

[violoncelloCH]

Steps to reproduce

1. create several users and groups with users from external user backend (webdav)
2. go to contacts menu
3. there is only one user listed (I think i created bevor updating nextcloud from 13 to 13.0.2

Expected behaviour

all users should be listed or at least the should pop up when searching for

Actual behaviour

only one user (+local users) is listed
this one was probably created before upgrading nextcloud to 13.0.2

Server configuration

Operating system: Ubuntu 16.04

Web server: apache2

Database: mariaDB

PHP version: 7.2

Nextcloud version: 13.0.2

Updated from an older Nextcloud/ownCloud or fresh install: fresh (updated from 13.0.0)

Where did you install Nextcloud from: official nextcloud.com download

Signing status:

Signing status

No errors have been found.

List of activated apps:

App list

Enabled:
  - activity: 2.6.1
  - admin_notifications: 1.0.1
  - bruteforcesettings: 1.0.3
  - comments: 1.3.0
  - dav: 1.4.6
  - federatedfilesharing: 1.3.1
  - federation: 1.3.0
  - files: 1.8.0
  - files_automatedtagging: 1.3.0
  - files_external: 1.4.1
  - files_pdfviewer: 1.2.1
  - files_rightclick: 0.8.4
  - files_sharing: 1.5.0
  - files_texteditor: 2.5.1
  - files_trashbin: 1.3.0
  - files_versions: 1.6.0
  - files_videoplayer: 1.2.0
  - firstrunwizard: 2.2.1
  - gallery: 18.0.0
  - groupfolders: 1.2.0
  - logreader: 2.0.0
  - lookup_server_connector: 1.1.0
  - metadata: 0.6.0
  - nextcloud_announcements: 1.2.0
  - notifications: 2.1.2
  - oauth2: 1.1.0
  - password_policy: 1.3.0
  - provisioning_api: 1.3.0
  - quota_warning: 1.2.0
  - ransomware_protection: 1.1.0
  - serverinfo: 1.3.0
  - sharebymail: 1.3.0
  - survey_client: 1.1.0
  - systemtags: 1.3.0
  - theming: 1.4.1
  - twofactor_backupcodes: 1.2.3
  - updatenotification: 1.3.0
  - user_external: 0.4
  - workflowengine: 1.3.0
Disabled:
  - admin_audit
  - encryption
  - files_accesscontrol
  - user_ldap```
</details>

**Nextcloud configuration:**
<details>
<summary>Config report</summary>

{
"system": {
"instanceid": "REMOVED SENSITIVE VALUE",
"passwordsalt": "REMOVED SENSITIVE VALUE",
"secret": "REMOVED SENSITIVE VALUE",
"trusted_domains": [
"REMOVED SENSITIVE VALUE"
],
"auth.bruteforce.protection.enabled": true,
"0": [
".htaccess",
"Thumbs.db",
"thumbs.db"
],
"cron_log": true,
"activity_expire_days": 33,
"datadirectory": "REMOVED SENSITIVE VALUE",
"overwrite.cli.url": "REMOVED SENSITIVE VALUE",
"dbtype": "mysql",
"version": "13.0.2.1",
"dbname": "REMOVED SENSITIVE VALUE",
"dbhost": "REMOVED SENSITIVE VALUE",
"dbport": "",
"dbtableprefix": "oc_",
"mysql.utf8mb4": true,
"dbuser": "REMOVED SENSITIVE VALUE",
"dbpassword": "REMOVED SENSITIVE VALUE",
"installed": true,
"enable_previews": true,
"enabledPreviewProviders": [
"OC\Preview\PNG",
"OC\Preview\JPEG",
"OC\Preview\GIF",
"OC\Preview\BMP",
"OC\Preview\XBitmap",
"OC\Preview\Movie",
"OC\Preview\PDF",
"OC\Preview\MP3",
"OC\Preview\TXT",
"OC\Preview\MarkDown"
],
"preview_max_x": 1024,
"preview_max_y": 768,
"preview_max_scale_factor": 1,
"filesystem_check_changes": 0,
"filelocking.enabled": "true",
"htaccess.RewriteBase": "/",
"integrity.check.disabled": false,
"knowledgebaseenabled": false,
"logfile": "/var/nc_data/nextcloud.log",
"loglevel": 0,
"logtimezone": "Europe/Berlin",
"log_rotate_size": 104857600,
"maintenance": false,
"memcache.local": "\OC\Memcache\APCu",
"memcache.locking": "\OC\Memcache\Redis",
"overwriteprotocol": "https",
"redis": {
"host": "REMOVED SENSITIVE VALUE",
"password": "REMOVED SENSITIVE VALUE",
"port": 0,
"timeout": 0
},
"quota_include_external_storage": false,
"share_folder": "",
"skeletondirectory": "/srv/nextclouddata/presets/",
"theme": "",
"trashbin_retention_obligation": "auto, 7",
"updater.release.channel": "stable",
"mail_smtpmode": "smtp",
"mail_smtpauthtype": "LOGIN",
"user_backends": [
{
"class": "\OCA\User_External\WebDAVAuth",
"arguments": [
"REMOVED SENSITIVE VALUE"
]
}
],
"mail_from_address": "REMOVED SENSITIVE VALUE",
"mail_domain": "REMOVED SENSITIVE VALUE",
"mail_smtpauth": 1,
"mail_smtpport": "465",
"mail_smtpname": "REMOVED SENSITIVE VALUE",
"mail_smtppassword": "REMOVED SENSITIVE VALUE",
"mail_smtpsecure": "ssl",
"mail_smtphost": "REMOVED SENSITIVE VALUE"
}
}

</details>

**Are you using external storage, if yes which one:** webdav

**Are you using encryption:** no

**Are you using an external user-backend, if yes which one:** Webdav

### Client configuration
**Browser:** Firefox 59 / Chrome

**Operating system:** Win 10

### Logs
#### Web server error log
<details>
<summary>Web server error log</summary>

Insert your webserver log here

</details>

#### Nextcloud log (data/nextcloud.log)
<details>
<summary>Nextcloud log</summary>

Insert your Nextcloud log here

</details>

#### Browser log
<details>
<summary>Browser log</summary>

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...

</details>

[MorrisJobke]

cc @georgehrke @ChristophWurst

[ChristophWurst]

What user back-end is that? Is that an external app?

[violoncelloCH]

@ChristophWurst it's the official External User Support App (https://github.com/nextcloud/apps/tree/master/user_external) configured to authenticate against a WebDAV server

[ChristophWurst]

Okay, so I think the issue is that the contacts menu uses the \OCP\Contacts\IManager to search contacts, which in turn only operates on registered address books. Looking at our code base shows me that the only address books we're registering are the ones from the DAV app: https://github.com/nextcloud/server/blob/master/apps/dav/lib/CardDAV/ContactsManager.php.

@georgehrke @MorrisJobke @rullzer does anybody know if the DAV address books should contain those external users as well?

cc @skjnldsv because I think you asked about a similar issue last week.

[violoncelloCH]

I also recognized the contacts menu doesn't show the profile picture/avatar for the shown contacts from external user backend; but the ones of database users are shown

[ChristophWurst]

I also recognized the contacts menu doesn't show the profile picture/avatar for the shown contacts from external user backend; but the ones of database users are shown

IIRC that's because the avatars are a feature of the internal DAV representation of system users. We haven't got any information about external users, I think.

[violoncelloCH]

But users of external storage have got profile pics or avatars whith a color and a letter in the admin user view and in the sharing dialog... why are the images shown in these locations and not in the contacts menu?

[ChristophWurst]

Fair enough. Then those features must use a different API or it's not stored in the PHOTO index the contacts menu reads from:

server/lib/private/Contacts/ContactsMenu/ContactsStore.php

Line 240 in 43f7ea5

if (isset($contact['PHOTO']) && strpos($contact['PHOTO'], $avatarPrefix) === 0) {

[violoncelloCH]

this issue should stay open as it is not yet fixed....

[szaimen]

I am going to close this since there doesn't seem to be a lot of interest (no upvotes) and no respond since over 2 years. Please reopen if you still want to implement this.