Nlog: Unable to implement NLog when hosting medium trust level application on shared server

[kshkrao3]

• Bug : Server throws Security exception when medium level trust application is hosted. I am hosting my application in Shared Server. I have referred this issue and but couldn't exactly get how to resolve this.

NLog version: 4.3.11

Platform: .Net 4.0

Current NLog config

<configSections>
       <section name="nlog" type="NLog.Config.ConfigSectionHandler,NLog"/>
</configSections>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <targets>
      <target name="logfile" xsi:type="File" fileName="${basedir}APILog\${date:format=yyyy-MM-dd}-api.log"/>
    </targets>
    <rules>
      <logger name="*" minlevel="Trace" writeTo="logfile"/>
    </rules>
</nlog>

In case of a BUG:

• What is the current result? - The above said exception
• What is the expected result? - The application should log errors as this works in local system
• Please post full exception details (message, stacktrace, inner exceptions)

"ExceptionMessage": "Request for the permission of type 'System.Configuration.ConfigurationPermission, System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' failed.", "ExceptionType": "System.Security.SecurityException", "StackTrace": " at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet)\r\n at System.Security.CodeAccessSecurityEngine.Check(CodeAccessPermission cap, StackCrawlMark& stackMark)\r\n at System.Security.CodeAccessPermission.Demand()\r\n at System.Configuration.BaseConfigurationRecord.CheckPermissionAllowed(String configKey, Boolean requirePermission, Boolean isTrustedWithoutAptca)" }

• Are there any work arrounds? No. As of now I've commented the above configuration and it works fine.
• Is there a version in which it did worked? N/A

[304NotModified]

Thanks for the bug report.

You could try using a separate nlog.config.

[kshkrao3]

@304NotModified Could you please how can I do it with separate nlog.config file. I am afraid I am not able to understand what you said. Also I updated the library from NuGet but still am facing the SecurityException issue

[304NotModified]

@304NotModified Could you please how can I do it with separate nlog.config fil

Put your config in nlog.config, https://github.com/NLog/NLog/wiki/Tutorial#configuration

Also I updated the library from NuGet but still am facing the SecurityException issue

Yes it's not on nuget yet. Will release a private package in a few minutes

[kshkrao3]

Should this NLog.Config file be presented in my application root folder. Are there any other setups to be done after these configurations are added in separate file?

[304NotModified]

Should this NLog.Config file be presented in my application root folder.

That's one of the options. See also https://github.com/NLog/NLog/wiki/Configuration-file#configuration-file-locations

Build is still building..

[kshkrao3]

@304NotModified Thanks much for sharing this.. 👍 Appreciate the efforts.. 🥇 Hopefully, I should be able to run my application after this.. :)

[304NotModified]

@kshkrao3

could you try this package : https://www.nuget.org/packages/NLog/4.4.1-dev-b4084

Install-Package NLog -Version 4.4.1-dev-b4084 -Pre

[kshkrao3]

Unfortunately, I am still getting the same exception. I updated NLog with above package, created a separate NLog.config file in root directory of project. Still no luck.. :( Here's my project structure as of now.

[kshkrao3]

Here is the exception details if you want

"ExceptionType": "System.Security.SecurityException", "StackTrace": " at NLog.Common.InternalLogger.LogAssemblyVersion(Assembly assembly)\r\n at NLog.LogFactory.LogConfigurationInitialized()\r\n at NLog.LogFactory.get_Configuration()\r\n at NLog.LogFactory.GetLogger(LoggerCacheKey cacheKey)\r\n at NLog.LogFactory.GetLogger(String name)\r\n at NLog.LogManager.GetCurrentClassLogger()\r\n at BS_API.Helpers.NLogger..cctor() in F:\Projects\Kemmale Projects\Bake Studio API\BS API\BS API\Helpers\NLogger.cs:line 18"

[304NotModified]

Here is the exception details if you want

It's not the same as before I think, but we could fix it with that stacktrace

[kshkrao3]

Yea, its not same. I did not observe that.. :)

[304NotModified]

If you set <nlog throwExceptions="false">, it there still an exception?

It should not

[304NotModified]

Is reading the Assembly property of Type disallowed in Medium trust?

[kshkrao3]

Is reading the Assembly property of Type disallowed in Medium trust?

@304NotModified For this, I might need to ask my hosting provider for the details.

I can try this once

If you set , it there still an exception?

It should not

[304NotModified]

Do you have more exception details? Message, inner data etc

[kshkrao3]

Do you have more exception details? Message, inner data etc

No bro. That's all I got. :(

If you set , it there still an exception?
It should not

It still hits exception.

[kshkrao3]

I am unable to debug this in local, as I do not face any issue in local.

[304NotModified]

"ExceptionType": "System.Security.SecurityException", "StackTrace": " at NLog.Common.InternalLogger.LogAssemblyVersion(Assembly assembly)\r\n at NLog.LogFactory.LogConfigurationInitialized()\r\n at NLog.LogFactory.get_Configuration()\r\n at NLog.LogFactory.GetLogger(LoggerCacheKey cacheKey)\r\n at NLog.LogFactory.GetLogger(String name)\r\n at NLog.LogManager.GetCurrentClassLogger()\r\n at BS_API.Helpers.NLogger..cctor() in F:\Projects\Kemmale Projects\Bake Studio API\BS API\BS API\Helpers\NLogger.cs:line 18"

This one is fixed in https://github.com/NLog/NLog/pull/1874

Will link to a nupkg soon

[304NotModified]

@kshkrao3 update! :

https://www.nuget.org/packages/NLog/4.4.1-dev-b4085

Install-Package NLog -Version 4.4.1-dev-b4085 -Pre

[kshkrao3]

@304NotModified I will try this update and let you know.. :)

[kshkrao3]

@304NotModified I confirm that this works fine. Really happy about the fix and I can't really express it here.. :) :) :) Thank you, Thank you and Thank you so much for the efforts you've put to resolve this.. :)

[304NotModified]

Great! Will merge it for NLog 4.4.1. Also thanks to @snakefoot!

[kshkrao3]

Thank you @snakefoot .. :) 🥇

[304NotModified]

4.4.1 has been released!

[kshkrao3]

Thank you for the update @304NotModified .. :)