I am using Serilog in my UWP application. I can write the log in App LocalState folder without any issue.
But now I want to write the logs in D: drive specific folder. I have added the broadFileSystemAccess restricted capability and enabled the full access from the settings.
But still it is not creating the file in the specified location and not raising any error.
Anyone know the fix for this? Thanks in advance.
var file = #"D:\Logs\Serilog.txt";
Serilog.Log.Logger = new LoggerConfiguration().WriteTo.File(file).CreateLogger();
There is a very important information about broadFileSystemAccess capability on the File access permissions document. I'm not sure if you note it.
This broadFileSystemAccess capability only works for APIs in the Windows.Storage namespace.
This point is very important. So, your issue actually is you need to check the LoggerConfiguration().WriteTo.File(file).CreateLogger() relevant method if it write to files by using the Windows.Storage APIs.
By my checking, it uses the StreamWriter method to write to files. But this method is not included in the Windows.Storage APIs. So, the issue was very obvious. You need to submit this issue to Github and let the officials to modify this method and make it work in UWP.
Or, if you're interested in serilog-sinks-file source code, you could download it and make the change by yourself, Then, you could compile a custom serilog library version for your UWP project.
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(Sorry in advance, if I have the wrong tags)
Hello!
So I am trying to work on a personal WPF project which would allow the client application exe to download another application exe (Unity Application) and open it within the client exe's Grid. Everything is working fine.
But, I am wondering if there's a way to "lock" the downloaded application in a way that only my client exe can open the downloaded exe?
Here's the only solution I have thought of but not sure with
Check for command line arguments within the Unity Applications
This works well but people who knows about the existence of decompiler might be able to decode that I am trying to check the arguments, and input relevant data there. :(. So, it won't help too much?
Thanks for any insights.
-Kevin
There is no non-hackable solution, you can only make it harder for crackers to break into the app by code obfuscation (hard to read the code) + adding integrity checks (make sure that your app is not modified).. There are commecial apps out there to do this (ex. PreEmptive), and their solutions differ from each other, nothing is ultimate.
Anyway, You might make Unity Application read some file or some registry value that Client application has updated just before launching the Unity Application, along with command line args method that you mentioned..
I have a problem with my WPF application (a simple clicker game). I've just made a deployment/created a setup project using Microsoft Visual Studio Installer Projects extension for Visual Studio. Everything seemed to work fine, setup works good (tested on other computer) and furthermore the installed application almost works correctly. The only exception is a button calling function which is creating a new txt (something like a draft of a "save" file) file in a folder where the application is installed. Clicking this button cause instant crash of the whole application. Nothing else happens, no error message, the app just turns off.
I assume that the problem lies in access rights to the folder/administrator rights.
I've added txt file with the same name in the application folder using "File System" window in setup project, deployed and installed again. Even when the file exists the problem happend again (probably because of access rights when trying to override file content).
It's may be important that everything worked while running app through VS, also using .exe works fine on any computer. The problem is only with application installed using setup.
I'm not sure where the problem is so it's hard to show some code, to be honest i'm not even sure if it's a problem with code, maybe it can be solved with setting some setup project properties?
I would like to store some data locally between two sessions, i've choosed txt file because it's light and simple even if it's not the most elegant way.
I expect that installed application will be able to create and override txt file in it's folder.
P.S. if you need any code, screenshots or information about my setup please let me know in comments section, I will provide what's necessary
At the moment you install your program you're having administrator-rights. So the folder where your application is, also was created with administrator-rigths.
If you want to store data to this folder, you'll have to run your application as administrator. (not the best idea)
Otherwise you can change your code to write your file at runtime to a different location where you don't need administrator-rights.
For example:
string path = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
will give you: "C:\Users\MyUserName\AppData\Local"
string path = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
will give you: "C:\Users\MyUserName\AppData\Roaming"
string path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
will give you: "C:\Users\MyUserName\Documents"
And some error-handling around the saving of the file would be very nice and helpful ;)
Thank you everyone for solution and knowledge, the problem was as I assumed (access to the path denied).
I was using this code to create a path:
Directory.GetCurrentDirectory() + "\\SyntyhCitySave.txt";
Creating a file in a special directory instead of application folder works, that's the solution for my problem:
Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) + "\\SyntyhCitySave.txt";
Tomtom answer marked as accepted.
I'm trying to save some screen dumps to internal storage for debugging purposes, but I can't seem to get access to them. When I call FileSystemStorage.getInstance().getAppHomePath(), I get a path that looks something like this:
/data/data/com.mycompany.myapp/files/
But I can't see this folder in the Android File Transfer tool, so I can't drag the files to my Mac. I also tried attaching them to an email using the Message class, but for some reason the attachments never showed up. I notice that a lot of applications store data in folders like this:
/Android/data/com.doubletwist.androidplayer/
If I try to create a folder like this, I run into two problems. First, it's not platform independent. (This doesn't matter much because I'm just doing this for debugging.) Second, it doesn't work. I get an error telling me I need to use the directory returned by FileSystemStorage.getInstance().getAppHomePath()
Is there any way I can save files to a folder that I can actually retrieve them from? It would be more helpful if I had a platform-independent way, but any way that works is fine for now.
File system is a very "unportable" notion. By default app home is a private folder which some mobile OS's including Android 4+ keep private and inaccessible.
Android has a concept of "sdcard" which used to be a physical storage where you could write anything in any directory without a problem. This is no longer applicable for later versions of Android but you can read from the sdcard directory and detect it.
FileSystemStorage has an API to get roots and their types, if you have an sdcard type you can read from there. You can use the FileTree to see the file hierarchy as exposed to your application which can be useful for debugging.
I am working with a MATLAB project, and would like to be able to configure variables and paths without re-creating the executable (currently done by using MATLAB's built-in deploytool). I realize I can create a simple text file, listing key=value pairs, and read that in during run-time. There doesn't seem to be any built-in support in MATLAB for creating configuration files that follow a standard format.
Are there any standard existing ways to use configuration files for MATLAB-generated executables?
1) Add your resource to the package in DeployTool in the shared resources part
2) Read by using:
fullfile(ctfroot(),'config.txt');
Edit : That is suitable if your configuration is "private", that is the user should not edit it. In this case it is deployed together with your program as a resource. If you want a "public" config for the users, I know of no better way than to do what you offered.
I don't quite understand how Silverlight code works within the browser. Are the assemblies downloaded to the client machine? Is there any chance of the code getting decompiled using Reflector or some similar tool? If so, what options does one have to protect the code? Do .net obfuscators work with Silverlight?
Whenever you are in a web browser, all client side code is downloaded to the machine and can be examined by the user. This goes for Javascript, Flash, and Silverlight.
If you have proprietary code that absolutely must be hidden then you need to put it on the server and expose an API that the clients can call to show information to the user.
To view a Silverlight application the client download a .xap file that contains the dll and one configuration xml and optional resources. The dll contains compiled c# code that runs in a Silverlight runtime in client machine. Silverlight runtime is basically a subset of complete .net runtime. So the point is user gets the code in dll and then can use tools to get original source code. So at most you can do is obfuscation. Still for very critical code that should not be the option. You can use some other way (WCF or other webservices to hide some part of your code may be) if it shouts your need.
If you want to see just how easy it is to look at the code in a silverlight app just run SilverlightSpylink text by FirstFloor. As long as your have .NET Reflector installed you will be able to see (as you interact with the app) all the source code including the xaml files.
Since the code does get downloaded to the client (and even trying to prevent it with pragma no-cache won't work since they can hit the URL) you will need to protect your code by keeping important logic on the server.
If your afraid some one will steal your intellectual property and that law is not enough, Then you will need to obfuscate your code. But I would not call that protection per say but a deterrent to the casual reverse engineer.
Putting a pragma -No Cache- will prevent the .xap from being stored on the machine, instead it will be streamed by the Silverlight plugin. Without the pragma the .xap file is stored in the temp internet files.
Putting the application on a page on https will further protect the transmition of the .xap
If possible require authentication to view the web page / .xap file (thanks Joel)
Emrah,
Yes obfuscation is possible for SL application.
Yes, Silverlight xap files are nothing but zip files with your assemblies in them, so they do need protection via obfuscation. Give Crypto Obfuscator a try - it directly obfuscates xap files, it can also obfuscate XAML files in your assemblies by renaming class references, stripping comments, whitespace, newlines, etc