Connection to Firebird throws NullReferenceException on mono
------------------------------------------------------------
Key: DNET-716
URL: http://tracker.firebirdsql.org/browse/DNET-716
Project: .NET Data provider
Issue Type: Bug
Components: ADO.NET Provider
Affects Versions: 5.6.0.0
Environment: kubuntu 16.04 x64 + mono 4.6.1 + FirebirdSQL ADO.NET
driver 5.6.0.0
Reporter: Anton Kasyanov
Assignee: Jiri Cincura
An attempt to connect to the Firebird databse results in an
NullReferenceException with the following stacktrace:
at System.Text.Encoding.GetBytes (System.String s) [0x00015] in
<dca3b561b8ad4f9fb10141d81b39ff45>:0
at FirebirdSql.Data.Client.Managed.GdsConnection.UserIdentificationData ()
[0x00141] in <1c49352b896a4a9dba73865ddab7b59e>:0
at FirebirdSql.Data.Client.Managed.GdsConnection.Identify (System.String
database) [0x00044] in <1c49352b896a4a9dba73865ddab7b59e>:0
at FirebirdSql.Data.FirebirdClient.ClientFactory.CreateManagedDatabase
(FirebirdSql.Data.FirebirdClient.FbConnectionString options) [0x00042] in
<1c49352b896a4a9dba73865ddab7b59e>:0
at FirebirdSql.Data.FirebirdClient.ClientFactory.CreateDatabase
(FirebirdSql.Data.FirebirdClient.FbConnectionString options) [0x00010] in
<1c49352b896a4a9dba73865ddab7b59e>:0
at FirebirdSql.Data.FirebirdClient.FbConnectionInternal.Connect () [0x0001e]
in <1c49352b896a4a9dba73865ddab7b59e>:0
at
FirebirdSql.Data.FirebirdClient.FbConnectionPoolManager+Pool.CreateNewConnection
(FirebirdSql.Data.FirebirdClient.FbConnectionString connectionString)
[0x00006] in <1c49352b896a4a9dba73865ddab7b59e>:0
at
FirebirdSql.Data.FirebirdClient.FbConnectionPoolManager+Pool.CreateNewConnectionIfPossibleImpl
(FirebirdSql.Data.FirebirdClient.FbConnectionString connectionString)
[0x00020] in <1c49352b896a4a9dba73865ddab7b59e>:0
at FirebirdSql.Data.FirebirdClient.FbConnectionPoolManager+Pool.GetConnection
(FirebirdSql.Data.FirebirdClient.FbConnection owner) [0x00024] in
<1c49352b896a4a9dba73865ddab7b59e>:0
at FirebirdSql.Data.FirebirdClient.FbConnectionPoolManager.Get
(FirebirdSql.Data.FirebirdClient.FbConnectionString connectionString,
FirebirdSql.Data.FirebirdClient.FbConnection owner) [0x00035] in
<1c49352b896a4a9dba73865ddab7b59e>:0
at FirebirdSql.Data.FirebirdClient.FbConnection.Open () [0x00086] in
<1c49352b896a4a9dba73865ddab7b59e>:0
The exception is thrown at the line
private byte[] UserIdentificationData()
{
...
var user =
Encoding.UTF8.GetBytes(Environment.GetEnvironmentVariable("USERNAME"));
...
}
of the class FirebirdSql.Data.Client.Managed.GdsConnection
Earlier this method used Environment.UserName in this line, however this was
changed by the commit
https://github.com/cincuranet/FirebirdSql.Data.FirebirdClient/commit/7e1e4a1e1eb362c2c96a141a51952b23c9970f79
The USERNAME environment variable is not set in linux bu default. Setting it
hides the issue and can be considered as a workaround.
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