I have an mvc3 app which I want to write to a file but don't know how.
IIS doesn't allow StreamWriter file = new StreamWriter(Environment.CurrentDirectory);
How do I go about writing to a file?
IIS doesn't allow StreamWriter file = new StreamWriter(Environment.CurrentDirectory);
IIS allows everything. The account you are running your application under probably doesn't have permissions to write to this directory. So all you need to do is grant write permissions to this account to the specified directory. Alternatively you could write to the ~/App_Data folder of your application where chances are that the account will have permission.
You need to create a directory somewhere -- not necessarily within the InetPub -- and grant write rights for that directory to the Windows account that your Web application runs under.
So suppose your application runs in an Application Pool that is executed under the MyApplicationUser account. Then you would create a directory, say D:\Writeable\MyApplication and grant MyApplicationUser write rights to that directory in Windows.
IIS has no control over that directory, only Windows does, so that is the only place where you need to grant the write rights.
Related
I am having a weird issue that didn't used to happen. Perhaps windows update causes this?
We have an E drive partition created and I created a directory:
Test1
I shared it with administrators and everyone. Administrators have full access while everyone group only has read permissions but this folder only. I added a permission to allow full control to this folder and subfolder's and files to it and assigned it to domain admins. My jadmin#domain.local account is added to this group
I checked the security on the folder and the same permissions exist.
I created a directory within Test1 and called it New Folder, disabled inheritance and made sure explicit permissions for domain admins full control to all dir and subdir and files are added.
When i attempt to open this folder, i get a message:
"You don't currently have permission to access this folder. Click Continue to permanently get access to this folder".
When I Push Continue then an explicit permission for my user gets added to that folder. I am trying to prevent that from happening. If domain admins(my user added to this group) is added with full control. Why does this warning pop up and require my user to explicitly be added. How to prevent this from occurring?
I was expecting to be able to access the new folder directory without any warning and an explicit permission to be added
Check if you can access it with an elevated CMD.
Folders wich are protected for builtin administrators groups are supposed to be security relevant. These users should also not be used to administrate on server systems.
Increase security by creating a seperate admin group and dedicated permissions.
Alternatives are using a progam that can be started elevated, Like CMD, PowerShell, totalCommander, winscp (local part) and many more.
You could also administrate remote. That should remove the problem.
Another way would be to add "Interactive Logon" group to all of your permissions where you need to access.
Disabling UAC or removing administrators from the security settings is the least that I would suggest.
Our application uses a shared directory to store files that are 'checked out', modified via our application, and then 'checked in' to a shared directory, which is being accessed via SMB (The environment is hosted on a set of AWS servers, and our end-users access it via Citrix).
All users have read, write, etc. permissions for the shared directory.
We've recently changed the architecture of the application a bit. Previously, each user had his/her own subdirectory in the shared directory where the checked in/checked out file was stored.
In the new architecture, the individual subdirectories aren't used, so that all files checked in by users are stored directly into the shared directory. Users are then allowed to checkout/checkin any file in the shared directory.
The checkout process involves doing a File.Copy of the library version of the file to the user's local, non-shared directory. The user then uses our application to make changes to the file, which is then saved locally and File.Copy'd back into the shared directory.
Except that in the new architecture, the 'checkout' operation fails when User 2 attempts to checkout a file that was originally checked in by User1. As near as we can tell, this is because when, for example, User 1 checks a file in to the shared directory, the file implicitly receives a security entry for his specific AD login. A subsequent File.Copy operation by User 2 gets a permission error. If a full admin for the host system removes the security entry for User 1, then the File.Copy from the shared directory to User 2's local directory works fine.
Note that both users are assigned to a group with read, write, modify, etc to the shared directory (but not 'full control').
This doesn't seem like that unusual of a situation. We haven't (yet) tried to see if the application can programmatically remove the security entry created on the checkin - even assuming that's possible, it would be nice not to have to resort to that. But we've not found any arrangement of security settings that works.
Any information or suggestions will be appreciated.
Thanks...
As requested:
\\citrixfile01\Shares\clients\002\library
ALIGHTENT\002.EightTwoConversion:(I)(OI)(CI)(M)
NT AUTHORITY\LOCAL SERVICE:(I)(OI)(CI)(RX)
S-1-5-21-3973462947-2300097736-545649627-500:(I)(OI)(CI)(F)
ALIGHTENT\citrix:(I)(OI)(CI)(F)
ALIGHTENT\alightcalc:(I)(OI)(CI)(M)
ALIGHTENT\Domain Admins:(I)(OI)(CI)(F)
BUILTIN\Administrators:(I)(OI)(CI)(F)
\\citrixfile01\Shares\clients\002\library\AML_AmPac_8.2.amox
ALIGHTENT\002.Admin1:(I)(M)
ALIGHTENT\citrix:(I)(F)
ALIGHTENT\AEAdmin2:(I)(M)
ALIGHTENT\Domain Admins:(I)(F)
BUILTIN\Administrators:(I)(F)
When a file is moved, Windows does not update the ACL to add or remove inherited permissions. This is presumably for backwards-compatibility reasons; the permissions model looked somewhat different in the earliest versions of Windows NT.
Your options are to copy the file instead of moving it, or to explicitly reset the permissions after the file has been moved.
If you want to explicitly reset the permissions, you can do this using File.SetAccessControl. To apply the inherited permissions for the new location, the FileSecurity object should contain an empty ACL and the AreAccessRulesProtected property should be false.
I have a PHP script that runs a Powershell Stop-Process command through shell_exec(). PHP runs as IUSR. When I run the script, I receive an access denied error message. If I run the command in PowerShell using my Administrator account, it works as expected.
How do I grant IUSR the ability to execute Stop-Process in Powershell?
I wasn't able to find a solution to grant IUSR the specific privileges to execute Stop-Process, but I was able to get around this by changing the "Anonymous Authentication" user associated with the kill script from IUSR to Administrator.
In IIS 8.5, go to Sites->My Site->Folder Name. On the main panel, click on Authentication under IIS. Right click on Anonymous Authentication and then click on Edit.
You can set the "Anonymous Authentication" value at any level of your IIS app; from the site level to the sub-directory level. I recommend only changing the value from IUSR to Administrator on the directory that actually hosts your kill script. Changing it for the whole site might create problems for other parts of the application.
I've seen some information that suggests if you add a limited user to the Performance Monitor Users group and grant it debug privileges, it will be able to terminate processes.
You might consider something a bit less risky though, like running another web app as a user with those rights, that can only be accessed from the local machine. Then make your PHP app do a web request to the internal app to do it's killin'.
If you're trying to kill only a specific process this lets you further limit the impact because the internal app could be designed to only kill that one thing.
Other ways to achieve a similar separation is to have for example a scheduled task that looks for a file with specific content in a specific directory, when it sees it, it kills a process and deletes the file. IUSR can be given permission to create files in that directory as a way to trigger this. This method is very easy to implement but isn't synchronous.
I'm using Apache 2 to run my localhost on Mac (Mavericks), and every time I add a file or a folder in the default directory /Library/WebServer/Documents (and its subdirectories) the system asks me to authenticate:
This is a problem specially when using frameworks like Symfony or Zend Framework because they can't have writing access to folders. What can I do to solve this?
Mac/Linux grants access on different levels:
Per user
Per group
Per everybody
The folder Library/WebServer/Documents outside of the logged-in user paradigm (you) therefore write access (and other access like execute) is only granted to the administrator of the computer (or so-called root) which isn't you however on most Mac environment the password of root is your password (different users with the same password).
You will want to modify Apache2 configuration and change the directory to a folder located within your user's directory which is something like /Users/{whatever is your username} (you will probably need to create the folder).
Once, you moved the content of /Library/WebServer/Documents into the new folder, make sure the permission are set properly. Refer to the following documentation at the chapter "How to Modify Permissions with the Info Window".
The reason why your Mac is asking for permissions to write files outside of your user's directory is for security reasons. Imagine if you download a file, execute it and grant access (by giving the root password) then the file could potentially be a virus and erase or do all kind of things on your computer.
I've got an important resource folder (that can not be embeded in exe file) and I want to limit access of all Windows users except Admin Group ones. My program runs in normal (not Admin) user and I want give resource folder access only to this process. I can ask Admin user's password once, but I don't know is it possible or not?
You can start an elevated rights process from you application, do whatever is needed with admin rights and end it after.
Take a look here: http://victorhurdugaci.com/using-uac-with-c-part-1/