No import of contacts with umlauts / UnsupportedMediaType

[cmburg]

Steps to reproduce

1. create an arbitrary vcf, e.g. test.vcf (in my case it's a sanitised android export)
   BEGIN:VCARD
   VERSION:3.0
   N;CHARSET=UTF-8;ENCODING=QUOTED-PRINTABLE:=C3=96=64=65;=C3=96=6D=C3=BC=72;;;
   FN;CHARSET=UTF-8;ENCODING=QUOTED-PRINTABLE:=C3=96=6D=C3=BC=72=20=C3=96=64=65
   TEL;CELL:+491741234567890
   END:VCARD

2. In NC import above vcf

3. You'll get the error that the contact could not be created/added

Expected behaviour

The contact is created/imported

Actual behaviour

See above

Server configuration

Operating system: Linux 4.4.0-109-generic #132-Ubuntu SMP Tue Jan 9 19:52:39 UTC 2018 x86_64

Webserver: nginx/1.10.3 (fpm-fcgi)

Database: mysql 10.0.33

PHP version: 7.0.22-0ubuntu0.16.04.1
Modules loaded: Core, date, libxml, openssl, pcre, zlib, filter, hash, Reflection, SPL, session, standard, cgi-fcgi, mysqlnd, PDO, xml, apcu, calendar, ctype, curl, dom, mbstring, fileinfo, ftp, gd, gettext, iconv, intl, json, exif, mcrypt, mysqli, pdo_mysql, pdo_sqlite, Phar, posix, readline, shmop, SimpleXML, sockets, sqlite3, sysvmsg, sysvsem, sysvshm, tokenizer, wddx, xmlreader, xmlwriter, xsl, zip, Zend OPcache

Nextcloud version: 12.0.4 - 12.0.4.3

**Updated from an older Nextcloud/ownCloud or fresh install: fresh install

Where did you install Nextcloud from: https://decatec.de/home-server/owncloud-9-auf-ubuntu-server-16-04-lts-mit-nginx-mariadb-php-7-und-lets-encrypt/comment-page-2

with adaptions to Nextcloud

Enabled:

• activity: 2.5.2
• bruteforcesettings: 1.0.3
• calendar: 1.5.7
• comments: 1.2.0
• contacts: 2.0.1
• dav: 1.3.0
• federatedfilesharing: 1.2.0
• federation: 1.2.0
• files: 1.7.2
• files_pdfviewer: 1.1.1
• files_sharing: 1.4.0
• files_texteditor: 2.4.1
• files_trashbin: 1.2.0
• files_versions: 1.5.0
• files_videoplayer: 1.1.0
• firstrunwizard: 2.1
• gallery: 17.0.0
• issuetemplate: 0.3.0
• logreader: 2.0.0
• lookup_server_connector: 1.0.0
• nextcloud_announcements: 1.1
• notifications: 2.0.0
• oauth2: 1.0.5
• password_policy: 1.2.2
• provisioning_api: 1.2.0
• serverinfo: 1.2.0
• sharebymail: 1.2.0
• survey_client: 1.0.0
• systemtags: 1.2.0
• theming: 1.3.0
• twofactor_backupcodes: 1.1.1
• updatenotification: 1.2.0
• workflowengine: 1.2.0
  Disabled:
• admin_audit
• encryption
• files_external
• user_external
• user_ldap

</details>

<details><summary>Configuration (config/config.php)</summary>

{
"instanceid": "oc7brpjgd9w0",
"passwordsalt": "REMOVED SENSITIVE VALUE",
"secret": "REMOVED SENSITIVE VALUE",
"trusted_domains": [
"my.ddns.net",
"192.168.1.135"
],
"datadirectory": "/var/www/nextcloud/data",
"overwrite.cli.url": "http://my.ddns.net/nextcloud",
"dbtype": "mysql",
"version": "12.0.4.3",
"dbname": "nextcloud_db",
"dbhost": "localhost",
"dbport": "",
"dbtableprefix": "oc_",
"dbuser": "REMOVED SENSITIVE VALUE",
"dbpassword": "REMOVED SENSITIVE VALUE",
"installed": true,
"memcache.local": "\OC\Memcache\APCu",
"logtimezone": "Europe/Berlin"
}

</details>

**Are you using external storage, if yes which one: no

**Are you using encryption:** no

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

With access to your command line run e.g.:
root@ubuntu-server:/var/www/nextcloud# sudo -u www-data php occ ldap:show-config
[Symfony\Component\Console\Exception\CommandNotFoundException]
There are no commands defined in the "ldap" namespace.
root@ubuntu-server:/var/www/nextcloud#

Client configuration

Browser: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:57.0) Gecko/20100101 Firefox/57.0

Operating system: Elementary OS

Logs

Nextcloud log

Sabre\DAV\Exception\UnsupportedMediaType: Validation error in vCard: ENCODING=QUOTED-PRINTABLE is not valid for this document type.

/var/www/nextcloud/3rdparty/sabre/dav/lib/CardDAV/Plugin.php - line 316: Sabre\CardDAV\Plugin->validateVCard('BEGIN VCARD\r\nVE...', false)
[internal function] Sabre\CardDAV\Plugin->beforeCreateFile('addressbooks/us...', 'BEGIN VCARD\r\nVE...', Object(OCA\DAV\CardDAV\AddressBook), false)
/var/www/nextcloud/3rdparty/sabre/event/lib/EventEmitterTrait.php - line 105: call_user_func_array(Array, Array)
/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php - line 1094: Sabre\Event\EventEmitter->emit('beforeCreateFil...', Array)
/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php - line 525: Sabre\DAV\Server->createFile('addressbooks/us...', 'BEGIN VCARD\r\nVE...', NULL)
[internal function] Sabre\DAV\CorePlugin->httpPut(Object(Sabre\HTTP\Request), Object(Sabre\HTTP\Response))
/var/www/nextcloud/3rdparty/sabre/event/lib/EventEmitterTrait.php - line 105: call_user_func_array(Array, Array)
/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php - line 479: Sabre\Event\EventEmitter->emit('method PUT', Array)
/var/www/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php - line 254: Sabre\DAV\Server->invokeMethod(Object(Sabre\HTTP\Request), Object(Sabre\HTTP\Response))
/var/www/nextcloud/apps/dav/lib/Server.php - line 258: Sabre\DAV\Server->exec()
/var/www/nextcloud/apps/dav/appinfo/v2/remote.php - line 33: OCA\DAV\Server->exec()
/var/www/nextcloud/remote.php - line 162: require_once('/var/www/nextcl...')
{main}

[skjnldsv]

See nextcloud/server#10653