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https://issues.apache.org/jira/browse/GUACAMOLE-942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mike Jumper updated GUACAMOLE-942:
----------------------------------
Component/s: (was: guacamole-auth-jdbc-mysql)
guacamole-auth-jdbc
> Query may fail if all connections disconnect while listing active connections
> -----------------------------------------------------------------------------
>
> Key: GUACAMOLE-942
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-942
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole-auth-jdbc
> Affects Versions: 1.1.0
> Environment: CentOS 8
> Tomcat 9.0.30
> Guacamole 1.1.0, freshly upgraded from 0.9.14.
> LDAP backend
> JDBC MySQL connector 5.1.46 to MariaDB.
> Reporter: Stefan Bluhm
> Assignee: Mike Jumper
> Priority: Minor
> Attachments: catalina.zip
>
>
> After logging in and selecting an RDP connection, the connection fails with:
>
> "The remote desktop server is currently not unreachable."...
>
> The catalona.out log shows the following error:
> {code:none}
> 17:02:02.435 [http-nio-8080-exec-3] ERROR o.a.g.rest.RESTExceptionMapper -
> Unexpected internal error:
> ### Error querying database. Cause:
> com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error
> in your SQL syntax; check the manual that corresponds to your MariaDB server
> version for the right syntax to use near 'AND
> (
> guacamole_connection_permission.entity_id = 7
> ' at line 19
> ### The error may exist in
> org/apache/guacamole/auth/jdbc/connection/ConnectionMapper.xml
> ### The error may involve defaultParameterMap
> ### The error occurred while setting parameters
> ### SQL: SELECT guacamole_connection.connection_id,
> guacamole_connection.connection_name, parent_id, protocol, max_connections,
> max_connections_per_user, proxy_hostname, proxy_port,
> proxy_encryption_method, connection_weight, failover_only, MAX(start_date) AS
> last_active FROM guacamole_connection JOIN guacamole_connection_permission ON
> guacamole_connection_permission.connection_id =
> guacamole_connection.connection_id LEFT JOIN guacamole_connection_history ON
> guacamole_connection_history.connection_id =
> guacamole_connection.connection_id WHERE guacamole_connection.connection_id
> IN AND ( guacamole_connection_permission.entity_id = ? ) AND permission =
> 'READ' GROUP BY guacamole_connection.connection_id; SELECT
> primary_connection_id, guacamole_sharing_profile.sharing_profile_id FROM
> guacamole_sharing_profile JOIN guacamole_sharing_profile_permission ON
> guacamole_sharing_profile_permission.sharing_profile_id =
> guacamole_sharing_profile.sharing_profile_id WHERE primary_connection_id IN
> AND ( entity_id = ? ) AND permission = 'READ'; SELECT
> guacamole_connection_attribute.connection_id, attribute_name, attribute_value
> FROM guacamole_connection_attribute JOIN guacamole_connection_permission ON
> guacamole_connection_permission.connection_id =
> guacamole_connection_attribute.connection_id WHERE
> guacamole_connection_attribute.connection_id IN AND ( entity_id = ? ) AND
> permission = 'READ';
> ### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You
> have an error in your SQL syntax; check the manual that corresponds to your
> MariaDB server version for the right syntax to use near 'AND
> (
> guacamole_connection_permission.entity_id = 7
> ' at line 19
> {code}
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