Dynamic Assembly/Types With ReflectionPermissionFlag.RestrictedMemberAccess


Dynamic Assembly/Types With ReflectionPermissionFlag.RestrictedMemberAccess



My FlatFiles project uses System.Reflection.Emit to generate deserializers/serializers at runtime to read/write CVS files, etc. Until recently, I was able to simply use DynamicMethod passing in true for the restrictedSkipVisibility constructor parameter.


System.Reflection.Emit


DynamicMethod


true


restrictedSkipVisibility



New features I am working on require I build a class at runtime instead of a simple method. I was able to implement the new logic using AssemblyBuilder/ModuleBuilder/TypeBuilder/etc. However, I ran into issues whenever I needed to access internal project classes. For that, I added the [InternalsVisibleTo] attribute to my Assembly.cs file, giving visibility to my dynamic assembly.


AssemblyBuilder


ModuleBuilder


TypeBuilder


internal


Assembly.cs



When I look at projects like Castle.DynamicProxy.Core, I see they are relying on [InternalsVisibleTo], as well. Looking at other projects using DynamicProxy, I can see they are adding the same attribute. Anyone using these libraries must also add the attribute: example. Even then, doesn't provide access to private classes and members.


[InternalsVisibleTo]


private



From what I read online, it sounds like skipping visibility checks simply isn't possible using dynamic assemblies. Is this true? I am just looking for a confirmation.



My research also indicates that DynamicMethod's ability to skip visibility checks only works in certain environments. In other words, FlatFiles wouldn't work in a more restrictive environment (e.g., Internet). Is that true? That might be justification to force my users to add the [InternalsVisibleTo] attribute to their projects going forward.


DynamicMethod


[InternalsVisibleTo]









By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Comments

Post a Comment

Popular posts from this blog

Opening a url is failing in Swift

Opening a url is failing in Swift breakpointing inside the callback and logging success shows false. I added itms-apps to my plist: LSApplicationQueriesSchemes and put this in my app delegate: func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool { return true } func moreTapped() { let url = NSURL(string: "itms-apps://itunes.com/developer/quantum-productions/id979315877") if #available(iOS 10.0, *) { UIApplication.shared.open(url! as URL, options: [:], completionHandler: {(success: Bool) in }) } else { UIApplication.shared.openURL(url! as URL) } } Are you testing on a real device? – rmaddy Jun 21 at 23:57 I try on a device, get "Cannot Connect to App Store". Device is online ...
Read more

Exoplayer HLS doesn't show subtitle

Exoplayer HLS doesn't show subtitle I am developing a streaming app. I used for this purpose exoplayer2. I am using HLS streaming protocol. I need to show subtitle when streaming my videos. Everything goes well except subtitle. My player doesn't show the sample subtitle. My code is as following: uri = Uri.parse(url); videoSource = new HlsMediaSource.Factory(DATA_SOURCE_FACTORY).createMediaSource(uri); Uri uri1 = Uri.parse("https://bitdash-a.akamaihd.net/content/sintel/hls/subtitles_en.vtt"); Format subtitleFormat = Format.createTextSampleFormat( null, // An identifier for the track. May be null. MimeTypes.APPLICATION_SUBRIP, // The mime type. Must be set correctly. Format.NO_VALUE, // Selection flags for the track. "en"); DefaultBandwidthMeter bandwidthMeter2 = new DefaultBandwidthMeter(); DefaultDataSourceFactory dataSourceFactory = new DefaultDataSourceFactory(this, U...
Read more

Export result set on Dbeaver to CSV

Export result set on Dbeaver to CSV Normally I use Dbeaver for windows and always export my result set like this: run my query --> select the result --> export the result set --> select export to clipboard --> done This step by step puts my result set in my clipboard and I can paste it wherever I want to work with it. The problem is that now I am using dbeaver for mac and this guide is not working. I can go on until the moment that I select my result set like in the image below: exporting data set But once I go further in the process, in the last step I get: no query Note that in "source" it was suppose to show the query that originated the result set, but instead it says just "select. As a result it does't select my result or anything (besides being "successful"). Normally my query would show up there automatically and I couldn't find any option that corrects this problem in the menus. Please help me! Thanks. Aft...
Read more