Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 6 years ago.
Improve this question
I googled for this and also searched on StackOverflow, but not many helpful links showed up, so here goes:
I have a requirement as follows (and I know this is probably vague, but this is all the information I have right now):
The user will upload a software license file (and the said software can be anything - it is not specific to a particular software product), and the application will have to read the license file and populate a text box with the license key.
Based on this, my questions are as follows:
Is there a standard way to read license files for software products?
Do software license files have specific file extensions, or is it something specific to the vendors?
Is it possible to recognize a file as a license file?
Are there any .NET/C# based parsers which can read license files and extract the key?
There is no standard way.
No.
As a developer you can chose whatever you want to use it as the license file.
It depends on the way the software developer chose to proof a license, but mostly no.
Related
Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 3 years ago.
Improve this question
I need to write code that receives firmware update files from various sources (nothing is a given, not even the file extensions) and passes them up to the cloud so that our software can download them to individual machines.
As part of the process, the front end needs to give the users a richer experience, so I need to include information such as the version number, last time there was an approved update to the file, and some other info about who is responsible for the update.
I've been directed to pass the data in as "meta-data" so that we don't have to include two files and at this point that doesn't seem like a very viable option. I've been researching meta data all day. TagLib is only for media files. I can use Microsoft API Code Pack to read some attributes but it won't let me write anything.
The shell32 option looks like the only other possibility but I can't figure out how to write to it. I'm using C# code in VS 2019, currently .NET framework 4.6.1 but we are about to upgrade to 4.8, I think.
Is there a practical way to write a string value as meta-data into a file without knowing anything more about the file than what I could discover with c#?
If you don't want to provide additional files or locations with the meta information you can create a new single file which contains your meta data and the actual firmware update. Think of it as a ZIP file where you have the firmware update file and some other file with the meta information. This way you will have only one file you can send around, but it has all the information you will need at any later point.
You cannot change the firmware update file in any way, specially if you don't know how the file format is. It would most likely break the firmware update.
Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 4 years ago.
Improve this question
after one hour searching I'm writing this question.
how to read,write and modify a text in text editor while the text editor is open, the text editor might be anything such as notepad or vs or word.
the type of c# application isn't matter whatever it be.
Writing to another memory's process is more complex and less stable. Better idea is to send a message/event to another process. This link demonstrates it for notepad, but idea is similar for other editors.
You need to connect to the process, it involves a lot of Windows API and it is different for different applications. My advise, don't do it, I cannot imagine an architecture which includes this kind of actions, it is asking for bugs.
But, if you still want to do it, Google: "connect to a process notepad and change text c#"
You will find many links which explain. For example this one:
https://www.codeproject.com/Articles/670373/Csharp-Read-Write-Another-Process-Memory
Closed. This question needs to be more focused. It is not currently accepting answers.
Want to improve this question? Update the question so it focuses on one problem only by editing this post.
Closed 7 years ago.
Improve this question
I am trying to create a simple licensing verification for a software and I want verify is a file has been modified. I have XML file with license information and date when the license expires.
If someone changes this file - How do I detect?
Has to be difficult to change the application (C# .NET) if someone changes the file and hack the application (to skip the verification - I have to stop that too)
ClickOnce does that... You cannot modify the contents of a clickonce manifest, yet it is readable XML format file. I want the same
Closed. This question is opinion-based. It is not currently accepting answers.
Want to improve this question? Update the question so it can be answered with facts and citations by editing this post.
Closed 8 years ago.
Improve this question
I would like to implement a file download control for my asp.net c# MVC 4 web application. The requirements are as such
1) Only Logged in user can download the file (pdf etc.)
2) Each User can only download the file once
3) downloaded file should not be able to redistribute to others (this is what puzzled me the most)
For 1) and 2), I think these can be achieved by having records storing access information in database table.
However, I can't think of ways to achieve part 3) unless there is a way to limit the file content to query from server whenever it is opened.
Please share your idea and learn together. Cheers and thanks ~~
As you said 1 and 2 is trivial since you can track it on the server.
Number 3 will be for you probably impossible to solve. Amazon, Apple and other big companies which need to protect copy rights of eBooks or MP3, they offer to download, handle this with Digital Right Management Systems (DRM). However setting up such a system yourself, while possible, will be for sure not worth the effort.
Closed. This question is off-topic. It is not currently accepting answers.
Want to improve this question? Update the question so it's on-topic for Stack Overflow.
Closed 10 years ago.
Improve this question
We're getting ready to deploy a commercial application. Our software makes use of several other libraries, which have licenses ranging from the Code Project Open License (CPOL), the LGPL, the Apache License, and the MIT License
We want to comply with all of these licenses, obviously, but we're a small outfit that doesn't have a legal department to help us out with these things. Currently, as all the libraries are dynamically linked, and not embedded into the executable, I think we're mostly in the clear. Our project is closed-source, and is intended to be sold, and possibly resold by those we provide it to.
In the source code that uses these libraries, we've placed the related license at the head of the file.
In our About Box, we've placed the licenses as well (Is this step necessary)
Would we also need to include a LICENSE file upon distribution of our software?
Thanks for your help!
When talking about selling, and possibility reselling, you don't want your programmers writing your licensing.
Hire a lawyer.