SSO/SAML nextcloud errors

UCS - Univention Corporate Server
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1

Hi, I’m tryng to configure saml+nextcloud. I’ ve followed https://www.univention.com/blog-en/2019/02/how-to-single-sign-on-for-nextcloud/

My config si:
ucs-sso.domain.loc MASTER
ucs-775.domain.loc Slave with Nextcloud

Errors:
https://ucs-sso.domain.loc/univention/saml/

Internal server error.
The server encountered an unexpected condition which prevented it from fulfilling the request.
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/cherrypy/_cprequest.py", line 670, in respond
    response.body = self.handler()
  File "/usr/lib/python2.7/dist-packages/cherrypy/lib/encoding.py", line 217, in __call__
    self.body = self.oldhandler(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/cherrypy/_cpdispatch.py", line 61, in __call__
    return self.callable(*self.args, **self.kwargs)
  File "/usr/sbin/univention-management-console-web-server", line 1184, in index
    return acs(binding, message, relay_state)
  File "/usr/sbin/univention-management-console-web-server", line 1195, in attribute_consuming_service
    saml = SAMLUser(response, message)
  File "/usr/sbin/univention-management-console-web-server", line 421, in __init__
    self.username = ''.join(self.data['uid'])
KeyError: 'uid'

Nextcloud login:
SimpleSAML_Error_MetadataNotFound: METADATANOTFOUND(’%ENTITYID%’ => ‘‘https://ucs-7758.domain.loc/nextcloud/apps/user_saml/saml/metadata’’)

Backtrace:
3 /usr/share/simplesamlphp/lib/SimpleSAML/Metadata/MetaDataStorageHandler.php:305 (SimpleSAML_Metadata_MetaDataStorageHandler::getMetaData)
2 /usr/share/simplesamlphp/lib/SimpleSAML/Metadata/MetaDataStorageHandler.php:325 (SimpleSAML_Metadata_MetaDataStorageHandler::getMetaDataConfig)
1 /usr/share/simplesamlphp/modules/saml/lib/IdP/SAML2.php:303 (sspmod_saml_IdP_SAML2::receiveAuthnRequest)
0 /usr/share/simplesamlphp/www/saml2/idp/SSOService.php:19 (N/A)

How can i fix?
Regards

2

I’ve upgrade to 4.4, now only white screen.
No error messages

Where can I se saml log?

3

Hi @andreaussi,
saml logfile should be at /var/log/simplesamlphp.
BR,
Jörn

4

Hi @jolentes , my /var/log/simplesamlphp is empty

5

Check what the logging.handler is in /etc/simplesamlphp/config.php.
If it is syslog you find the log messages in /var/log/syslog and /var/log/debug.
You can change the log level also in the config.

6

@jolentes
/etc/simplesamlphp/config.php

    'debug'         => true,
    'logging.level'         => SimpleSAML_Logger::DEBUG,
    'loggingdir'            => '/var/log/simplesamlphp/',
    'logging.handler'       => '/var/log/simplesamlphp/simplesamlphp.log',
    'logging.logfile'               => 'simplesamlphp.log',

but /var/log/simplesamlphp empty

find / -name simplesamlphp.log —> o records

7

That does not seam to be right. Check the simplesamlphp documentation for the correct values, but it should be something like ‘syslog’ or ‘file’.

BR,
Jörn

8

Hi @jolentes, this is simplesamlphp.log output:

" IssueInstant="2019-03-21T15:53:42Z" Destination="https://ucs-sso.domain.loc/simplesamlphp/saml2/idp/SSOService.php" ProtocolBinding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST" AssertionConsumerServiceURL="https://ucs-7758.domain.loc/nextcloud/apps/user_saml/saml/acs">
Mar 21 16:53:43 simplesamlphp DEBUG [2e899d47ee]   <saml:Issuer>https://ucs-7758.domain.loc/nextcloud/apps/user_saml/saml/metadata</saml:Issuer>
Mar 21 16:53:43 simplesamlphp DEBUG [2e899d47ee]   <samlp:NameIDPolicy Format="urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified" AllowCreate="true"/>
Mar 21 16:53:43 simplesamlphp DEBUG [2e899d47ee] </samlp:AuthnRequest>
Mar 21 16:53:43 simplesamlphp ERROR [2e899d47ee] SimpleSAML_Error_MetadataNotFound: METADATANOTFOUND('%ENTITYID%' => '\'https://ucs-7758.domain.loc/nextcloud/apps/user_saml/saml/metadata\'')
Mar 21 16:53:43 simplesamlphp ERROR [2e899d47ee] Backtrace:
Mar 21 16:53:43 simplesamlphp ERROR [2e899d47ee] 3 /usr/share/simplesamlphp/lib/SimpleSAML/Metadata/MetaDataStorageHandler.php:305 (SimpleSAML_Metadata_MetaDataStorageHandler::getMetaData)
Mar 21 16:53:43 simplesamlphp ERROR [2e899d47ee] 2 /usr/share/simplesamlphp/lib/SimpleSAML/Metadata/MetaDataStorageHandler.php:325 (SimpleSAML_Metadata_MetaDataStorageHandler::getMetaDataConfig)
Mar 21 16:53:43 simplesamlphp ERROR [2e899d47ee] 1 /usr/share/simplesamlphp/modules/saml/lib/IdP/SAML2.php:303 (sspmod_saml_IdP_SAML2::receiveAuthnRequest)
Mar 21 16:53:43 simplesamlphp ERROR [2e899d47ee] 0 /usr/share/simplesamlphp/www/saml2/idp/SSOService.php:19 (N/A)
Mar 21 16:53:43 simplesamlphp ERROR [2e899d47ee] Error report with id 27d7d2f1 generated.
Mar 21 16:53:43 simplesamlphp DEBUG [2e899d47ee] loading key simpleSAMLphp.session.19a43b90e69e70dd10f82fa2967037e3 from memcache
9

What is the name of the Service Provider you created in UCS for Nextcloud? That must match exactly the string it is complaining about in the METADATANOTFOUND error message.

10

@jolentes this is my config:Schermata%20del%202019-03-22%2008-13-45

11

@andreaussi,
as I wrote: the strings must match:

The error message says it’s looking for: https://ucs-7758.domain.loc/nextcloud/apps/user_saml/saml/metadata

If you did not create a SAML service provider with that name it won’t work.

12

@jolentes, Yea Works fine with netxcloud.
Thank you
Next step is to build a php app with simplesamlphp

Regards