Bug: X-Enum Syntaxes Crash Control Panel During Schema Parsing

[GuyPaddock]

Affected Version: 3.0

Summary

The Wren:DS / OpenDJ Control Panel application does not appear to properly handle custom X-ENUM syntaxes; when they are defined in the server, the Control Panel erroneously flags the schema as being incomplete and will not provide a listing of the directory or the schema.

Steps to Reproduce

1. Install Wren:DS, being sure to create at least a root entry for the DC.
2. Create a custom X-ENUM syntax (for example: https://docs.oracle.com/cd/E19476-01/821-0509/enumeration-syntax-extension.html). You can create the syntax through either the ldapmodify CLI, or by editing 99-user.ldif.
3. Define an attribute type that uses the new X-ENUM syntax (reference the SunDS article mentioned earlier). You can create the syntax through either the ldapmodify CLI, or by editing 99-user.ldif (place it AFTER the X-ENUM syntax definition).
4. Restart Wren:DS.
5. Attempt to connect to the server with Wren:DS / OpenDJ Control Panel.

Expected Results

• Control Panel connects to the server without error.
• If you browse the schema using the Control Panel application, you will find the OID of the X-ENUM syntax under "Attribute Syntaxes" in the "Manage Schema" window.
  

Actual Results

• Control Panel connects but displays errors.
• The error displayed is:

Error Reading Configuration
The definition for the attribute type with OID 1.3.6.1.4.1.32473.5 declared that it should have a syntax with OID 1.3.6.1.4.1.32473.4. No such syntax is configured for use in the Directory Server

Additional Info

Anecdotally, it seems like this might be fixed in the 4.0 branch, according to https://bugster.forgerock.org/jira/browse/OPENDJ-3252. However, simply cherry-picking aaf3145 (the commit cited in the comments for that ticket) on to the 3.0 SDK does NOT solve the issue for 3.x. There was likely a larger re-factor of this code that addressed it.

[GuyPaddock]

The root cause of this issue in the CP app seems to be related to this code: https://github.com/WrenSecurity/wrends/blob/sustaining/3.0/opendj-server-legacy/src/main/java/org/opends/guitools/controlpanel/util/RemoteSchemaLoader.java#L213

The Control Panel and the Server both load a "bootstrap" syntaxes before they actually parse schema / load remote schema. What's odd is that the control panel then does the extra step of trying to hold on to those core syntaxes, at the expense of ignoring syntaxes from the server that don't fall under a specific OID (the OpenDS OID).

But... two issues:

1. The code does a contains() search rather than a startsWith() search, so technically if you put in an OID for a syntax that just happens to contain the base OID anywhere within it's OID (i.e. middle or end), that check will pass.
2. The filter causes the app to ignore loading all custom syntaxes from the server config.

It seems like we should just be able to remove the filter, but I'm open to ideas. (Indeed, I was able to capture the screenshot I posted under the "expected results" section just by removing the check).