Needed to write a server text file as the output of a business process initiated by ASP.net app.
The text file writing code is in a library file using standard stream code
All worked OK in IDE.
Publish and it falls over trying to write file. IIS is reluctant to write to the file system.
Much rummaging around and hair pulling finally led to a solution. It is not pretty and only applicable in a situation where you have control over the Webserver.
Just saw your answer.
It doesn't need to be inside your inetpub or wwwroot directory for that matter, it could be anywhere, as long as security permissions are set correctly for the user under which the application is running as.
But this is actually desired. If not just imagine the consequences of allowing write access anywhere.
Also, there's no need for the virtual directory. You could create a directory like C:\ProcessOutput, and grant permissions accordingly and it should work just fine.
Another option, would be to have a service account created, and impersonate as that user within your application only for when you need to write that output file.
Solution was:
Create a physical directory on the webserver with the physical path of:
c:\inetpub\wwwroot\mywebapp\myOutputFileDirectory
Make a virtual directory that points at the directory.
Using windows explorer give write permission to the physical directory to IIS_IUSRS.
Use a physical path of c:\inetpub\wwwroot\mywebapp\myOutputFileDirectory in your Streamwriter code
Maybe the virtual path could point to somewhere more sensible across the LAN if you get the security sorted but I am sufficiently battered to accept this small crumb with gratitude.
Related
I have an ASP.NET Core project that I'm developing and I'm making use of LiteDB as a database solution. In order to instantiate my database I need to provide a URI so that the program knows where to create the database.
Usually I'd do something like System.Environment.CurrentDirectory() to find the current directory I'm in and modify that, however the result of this command turns out to be C:\program files\IIS Express or something similar. Basically the current directory points to the location of IIS Express.
Instead I want to get the root of my ASP.NET project, the location that contains my controllers folder, appsettings.json, bin and obj folders.
What command do I need to use to get a string representing this location? I don't want to use a hard coded string for obvious reasons.
If you don't have access to DI you could try:
Assembly.GetExecutingAssembly().Location
If you have access to DI, try this:
Inject the IHostingEnvironment and call environment.ContentRootPath
How to get root directory of project in asp.net core. Directory.GetCurrentDirectory() doesn't seem to work correctly on a mac
You may be better served by using a dedicated location (such as a network share) rather than the folder that contains the executable code. Having user data mixed into deployed code comes with a lot of headaches:
Deployments become more complex as they need to account for the presence of user data. This is especially true if you need to delete pre-existing code during a deployment.
If the user data is sensitive, developers may be denied access to read the deployed code. This can make troubleshooting issues much harder.
Backups of deployed code will contain user data, which means they will always appear to be different even if nothing (code-wise) has changed.
Of course, this all assumes that the production environment is configured differently from developers' local machines.
I have a dll that opens a file for processing. It attempts to find the file with FindFile() function. I also have a service that calls the dll and here is the problem - when the path to the file is a network path, FindFile() fails to find it but only when called from the service, if I call it directly from my application it finds the file. I'm sure the FindFile() function gets the same parameters in both cases as I write a log file with it. Parameter looks like this:
"\SERVER\SERVER_USERS\USERX\TEST.TXT"
I know this is 6 months after the question, but I figured I'd answer it anyway ... Usually, it is a permissions thing. If the service does not have access to the network folder, then it won't find anything. Many services run as a local system account by default, and that account doesn't have built-in access to network files. So try making sure the service is running as an account that has access to the network folder in question.
i want make a new directory in application server in sap system ,and send my file in it .
for sending file in existing directory i find and use this transaction
CG3Z :/usr/sap/R3D/exe .
But i can not find a solution , neither with transaction nor abap codes .
I know that we can see directory with AL11 but I want to make my own directory.
I searched in SAP SCN and Stackoverflow but have not been able to find any similar problem.
Usually this is NOT done by application code but by a system administrator - otherwise you would have to add provisions for all supported operating systems. Also, there are a lot of other issues to take care of, like setting the proper file system permissions or making sure that a DFS is available on all application servers (writing stuff to application servers randomly depending on which server the user was logged on to usually won't do you any good). Have your system administrator setup a logical file name for you and use that.
I am currently working on a project where i need to store few files and folders in encrypted manner. This project will be platform independent and hence will be written in Java.
Instead of encrypting individual file and folder, we have been thinking of using some virtual file-system where a single container file will hold complete file-system.
Most of the open source virtual encrypted file-system tools we studied work on following principle.
mount the virtual file system (using secure password)
use this filesystem
finally dismount it
But the main problem here we face is that anyone who has access of the PC (e.g. network admin) will be able to see decrypted files when virtual drive is mounted. We want to restrict access to encrypted file system at process level. No one else in same OS session should be able to see the contents, hence no drive mounting, etc.
So we are looking for some open source tool which will provided some some APIs using which we will be able to access files in encrypted container without mounting it.
can anyone point us to any such library?
This thing I'd normally say was pretty cool.
http://www.pismotechnic.com/pfm/
But I've recently accidently copied a sub-repository in a mercurial repository to another folder and when that happened a lot of files got magically messed up. If you don't mind possible issues like that (eg. keeping backups) this could be a solution for you.
I've stumbled upon this question while hunting for an alternative because corrupted files are definitely not on my requirement list.
I am getting a strange issue where I seem to have read access, because I can
1. Get a list of files from a directory (Directory.GetFiles())
2. Load an XML document using XmlDocument instance's Load() method
But I can't use File.ReadAllText() to load a text file into memory. Gives me an System.UnauthorizedAccessException. I am not even trying to read from a network directory, just a local one. I've also used System.Security.Principal.WindowsIdentity.GetCurrent().Name to check the working user which is [CompanyDomain]/[MyUserName] and this user has full access to the directory I am using. I've also checked that the directory actually exists.
My environment
1. Windows Server 2003 Standard Edition
2. Visual Studio 2008
3. Just using the built in web server that launches every time i run the project.
Note: I couldn't find the IUSR_MACHINENAME user on this machine.
Any idea what steps I should take next?
Cheers,
James
One thing to assert:
the file that can be Xml Load()-ed is the very same file that cannot be ReadAlText()-ed ?
When things get odd like this, I found that turning auditing on, at the level of the directory or even of the file, often ends up pointing me towards a proper diagnostic and hence resolving the issue.
Also: In looking online reference for ReadAllText() I noted that (oddly, I think), this exception can be caused by:
path specified a file that is read-only.
Not sure why write access should be sought by this apparent read-only operation, but, maybe just try to make the file r/w-able.
http://msdn.microsoft.com/en-us/library/72wdk8cc%28VS.71%29.aspx
<identity impersonate="true" />