Unsupported plugin Legacy Auth

[Tomasz Dubiel]

Hello. Is it a bug or I configured something bad?

System.NotSupportedException: Not supported plugin 'Legacy_Auth'.
   w FirebirdSql.Data.Client.Managed.AuthBlock.Start(Byte[] serverData, String acceptPluginName, Boolean isAuthenticated, Byte[] serverKeys)
   w FirebirdSql.Data.Client.Managed.GdsConnection.Identify(String database)
   w FirebirdSql.Data.Client.ClientFactory.CreateManagedDatabase(ConnectionString options)
   w FirebirdSql.Data.Client.ClientFactory.CreateDatabase(ConnectionString options)
   w FirebirdSql.Data.FirebirdClient.FbConnectionInternal.Connect()
   w FirebirdSql.Data.FirebirdClient.FbConnection.Open()

I try to connect to Firebird 3 database and get this error. FirebirdClient the newest version

Best regards.

[Jiří Činčura]

With Firebird 3 use (primarily) SRP for auth. You probably disabled that in `firebird.conf`.

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Mgr. Jiří Činčura
https://www.tabsoverspaces.com/

[Tomasz Dubiel]

No, in firebird.conf there is:

AuthServer = Srp, Legacy_Auth
UserManager = Srp, Legacy_UserManager

[Tomasz Dubiel]

I created https://github.com/FirebirdSQL/NETProvider/issues/1107

looks like a bug.

[Tomasz Dubiel]

Could you confirm it? If it is a bug, how quick could be the fix?

[Jiří Činčura]

> Could you confirm it? If it is a bug, how quick could be the fix?

No, it's not a bug.

[Tomasz Dubiel]

I mean: at all, net should connect to Srp, as it is listed first, but instead, tries only on Legacy_Auth and stops.

[Tomasz Dubiel]

So what is wrong with this conf? We have this on multiple our customers and java programs connect without any problems.

[Jiří Činčura]

> So what is wrong with this conf? We have this on multiple our customers
> and java programs connect without any problems.

The snippet of config you provided looks OK. I would try disabling Legacy_Auth and Legacy_UserManager all together and see whether it is taken into account, as a first troubleshooting step.

[Tomasz Dubiel]

Please explain what is wrong. Again: firebird.conf is:

AuthServer = Srp, Legacy_Auth
UserManager = Srp, Legacy_UserManager

Correct firebird.conf values.

I run net program and it complains: " System.NotSupportedException: Not supported plugin 'Legacy_Auth'. " - why?

[Tomasz Dubiel]

I can try, but only temporarily. Legacy must be enabled for this customer.

[Tomasz Dubiel]

For me, for my knowledge of Firebird, NET incorrectly tries Legacy_Auth instead of Legacy_UserManager;

Furthermore, SRP is enabled and is first in configuration, so it should use SRP.

[Tomasz Dubiel]

OK, a little correction.

The same user is on Srp and on Legacy. My mistake was to set a different password on one plugin, probably on Srp - that's why NET tried on Legacy.

Now it works, but most probably there is still a bug, if there is only a Legacy enabled. NET would probably then fail to connect.

[Jiří Činčura]

> a Legacy enabled. NET would probably then fail to connect.

Recent versions of provider yes. If you want legacy auth only and not Srp (or newer), you'd have to use old providers.

[Tomasz Dubiel]

Do you mean it is intended change? If so, why is there no proper message then like: "Legacy_UserManager is not supported. Turn on Srp"

[Tomasz Dubiel]

You see, I made one mistake, but it shouldnt have caused the program to fail to connect. If I got a message about Legacy being unsupported, I would quicker find out that I set an incorrect password for Srp.

[Jiří Činčura]

Legacy_UserManager is concern for server. Client sees Legacy_Auth plugin.

[Tomasz Dubiel]

Ok, I understand. Topic closed.

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