access denied error - c# - c#

I have a text box and a button in a form.i want to save a file into the network path entered in the textbox while clicking the button. i tried the code given below.
private void button1_Click(object sender, EventArgs e)
{
string destinationPath = txtFilePath.Text.ToString();
string sourceFile = #"c:\1.txt";
string fileName = Path.GetFileName(sourceFile);
System.IO.File.Copy(sourceFile, Path.Combine(destinationPath, fileName));
}
it works fine if the destination provided the permission to change content. If the destination is 'read only' then it gives the error. if the input is \192.168.0.24\aqm , then it shows the error shown below (the path do not have write permission)
Access to the path '\192.168.0.24\aqm\1.txt' is denied.
is there anyway to solve this. i mean, if the destination is read only, then it prompt username and password of that system , if username password entered correct, then save the file to that directory . the user knows the username and password of all the computers in the network. cant give write permission to every system casue of some security reason. thats why i am looking for a method i suggested above
or any other ways??
Hope someone help me

I can suggest you to another way. If it possible, make a Windows Service. Set Service Log On to account which ahve Admin permissions. Make your copy process with Windows Service. I am using this algorithm in one of my projects. It works great, if the service logs in with Admin credentials. The computer have Windows Service with Admin Credentials can easly copy a file on any network machine. For ex, put a System Timer in your service. Let the service checks a path every 5 minutes. If there is a file exist in the given path, take file and copy to network machine by giving path.

You can ask the user for a username and password, then pass those to a function like WNetAddConnection3 (see http://www.pinvoke.net/default.aspx/mpr/WNetAddConnection3.html for how to call it from C#).

I think if the destination is read only there is not much you can do other than notify the user that the file can not be saved because the dest is readonly.

Related

Issue to move file from one folder to another using window service, running as NetworkService

I want to move .txt file from one folder to another when window service is starting up.
protected override void OnStart()
{
string sourceFile = #"d:\Source\file.txt";
string destinationFile = #"D:\Destination\file.txt";
File.Move(sourceFile, destinationFile);
}
this code is working well when the serviceProcessInstaller1 Accunt type is LocalSystem. If i change the serviceProcessInstaller1 Accunt type is NetworkService, I will get an error access to the path is denied. Help me to solve this issue ?
Your problem here is the user permissions in the machine. Try changing the permissions to the file and the folder and set them less restricted. I'm sure that if you set all permissions to all users, your service will work. But it's risky too.
In this page, "File Access" section, you can read how to configure this permissions.

Upload images acces to path denied

Hi I seem to be having a problem when uploading images in asp.net.When I tryed to upload an Image I get this error:
Access to the path 'D:\Projects IDE\Visual Studio\MyWork\Websites\Forum\Images\avatar\userAvatars\aleczandru' is denied.
I have set application pools Identoty to NETWORKSERVICE ando also added the NETWORK SERVICE account to the Images folder with full permision but I still get the same error.
This is my code:
private void addImageToApp()
{
string path = "~/Images/avatar/userAvatars/" + User.Identity.Name;
createPath(path);
if( Directory.Exists(HostingEnvironment.MapPath(path)))
{
//try {
UploadImage.SaveAs(HostingEnvironment.MapPath(path));
// MultiViewIndex.ActiveViewIndex = 0;
//}catch(Exception ex)
//{
// AvatarDetails.Text = ex.Message;
//}
}
}
private void createPath(string path)
{
string activeDir = HostingEnvironment.MapPath("~/Images/avatar/userAvatars");
if( !Directory.Exists(Server.MapPath(path)) )
{
string newPath = Path.Combine(activeDir, User.Identity.Name);
Directory.CreateDirectory(newPath);
}
}
What else can I do to solve this problem?
EDIT
Hi at this point I have full permision control to the following USERS:
Authetificated Users
IUSR
SYSTEM
NETWORK SERVICE
IIS_WPG
Administrator
USers
Is it posible that I need to set any configuration to IIS in order for this to work?
EDIT
I have messed around with SQL-SERVER for the last couple of days in order to make this work so I might have missconfigured something form what I understand NETWORK SERVICE is stored in SQL-SERVER master.db database.I seem to be having two network service logins may this be the problem?I remember when I first checked it I had none now I have two:
EDIT
This is the print with the permisions I added to the folder:
EDIT : Complete error
StackTrace:
In method CreatePath you are creating folder 'D:\Projects IDE\Visual Studio\MyWork\Websites\Forum\Images\avatar\userAvatars\aleczandru'.
Then, you try to save the uploaded image with the filename 'D:\Projects IDE\Visual Studio\MyWork\Websites\Forum\Images\avatar\userAvatars\aleczandru'.
You can't have a folder and a file with the same name. If you try to do this, the OS will tell you access is denied.
I suppose you want to either create a filename inside folder aleczandru, or you meant to save the file as aleczandru.png or something in folder userAvatars.
Assuming your UploadImage is a FileUpload control, you can save the file to the user's folder using the original file name of the uploaded file.
UploadImage.SaveAs(HostingEnvironment.MapPath(
Path.Combine(path, UploadImage.FileName)));
Pls make sure you have full filename with file extention in you path.
Ok... I have done this before for a project to implement a PUT method for http. I dont clearly remember it.. but some hints... if I were in my office I could tell you correctly. here are the hints
You need to add IIS_IUSRS to have access to the folder in windows.
Go to IIS admin console click the deployed site node, and set the permission for the same folder/website requests coming in... I dont remember the which category was it.. that settings pane will allow you to add/modify permissions for POST, GET and other verbs for that matter... when you edit that, you should see options for Administrator, a particular user account, anonymous etc.
may be I will write back tomorrow... exactly how to do it :-)
Try to give the group called users the permission to modify this directory (under security)
You need to find out what user the asp.net upload page is running under. If you haven't changed it, and are not running under impersonation, it should default to the ASPNET user on the local machine. Whatever it turns out to be, give that user read/write permissions on the folder.

Set write permission on folder create

Hi I have been trying to properly configure IIS 6 to give write permisiosn for about 2 days now and I can't seem to find any good resource on this.I am a bit new to ASP.NET and until now I never had to work with IIS.
What I am trying to do is upload a file to the server.Each user on the server will have his own special folder witch will be created automaticly via C#.Now when I try to upload the file I get this error:
Access to the path 'D:\Projects IDE\Visual Studio\MyWork\Websites\Forum\Images\avatar\userAvatars\aleczandru' is denied
This is my code for creating the folder for each user and saving the file:
private void addImageToApp()
{
string path = "~/Images/avatar/userAvatars/" + User.Identity.Name;
createPath(path);
if( Directory.Exists(HostingEnvironment.MapPath(path)))
{
try {
UploadImage.SaveAs(HostingEnvironment.MapPath(path));
MultiViewIndex.ActiveViewIndex = 0;
}catch(Exception ex)
{
AvatarDetails.Text = ex.Message;
}
}
}
private void createPath(string path)
{
string activeDir = HostingEnvironment.MapPath("~/Images/avatar/userAvatars");
if( !Directory.Exists(Server.MapPath(path)) )
{
string newPath = Path.Combine(activeDir, User.Identity.Name);
Directory.CreateDirectory(newPath);
}
}
All I could find on the internet is that I have to add write permision via folder/properties/security/... while that is all good and fine I can not do this for each folder.
Up to this point I am not really sure that IIS is the one I need to configure I am a bit lost at this.
What do I have to do to give folders write permisions automaticly on folder create?
And if anyone has a good article or tutorial that shows how to do this please share it with me all the info I could find were very basic.
EDIT
I have added the network service account to the Images folder with full permision and have set the application's pool Identity to NetworkService but I still get the same error
EDIT
I have messed around with SQL-SERVER for the last couple of days in order to make this work so I might have missconfigured something form what I understand NETWORK SERVICE is stored in SQL-SERVER master.db database.I seem to be having two network service logins may this be the problem?I remember when I first checked it I had none now I have two:
Simply, when your asp.net application running you can open Task Manager and find process w3wp.
W3wp process like any other has user identity (by default - application pool identity - DefaultAppPool(like application pool name)).
And if it so, you should add write permissions for user named DefaultAppPool. To do it you should open security tab in folder's properties window, then change->add and type IIS AppPool/DefaultAppPool and choose local machine.
This post should help you!
This has nothing to do with IIS, brother. All you need to do is, open your IIS. Go to Application Pool. Right click on the Application Pool your website is running with. Select "Advanced Settings" and see the entry made against IDENTITY. Change it to use NetworkService. This will mean that you will be running your website under NETWORK SERVICE account now on.
Now right-click your root images folder, i.e., "Images". Select PROPERTIES. Select SECURITY. Add user NETWORK SERVICE, and give it FULL RIGHTS permissions on the folder.
Now whenever you create a folder and file under this "Images" folder through your code, it will automatically inherit permissions from its parent and you will allow you to do whatever you want (Add/Delete).
I hope this answers your question. If yes, then please mark it as "answered".

Access denied error

I am trying to delete the excel file from a specipic location . but can't deleting. having error :
Access to the path 'C:\mypath\sample.xlsx' is denied.
I write a code as :
protected void imgbtnImport_Click(object sender, ImageClickEventArgs e)
{
try
{
string strApplicationPath = HttpContext.Current.Request.MapPath(HttpContext.Current.Request.ApplicationPath);
string strXLStoredDirectoryPath = strApplicationPath + "/Information Documents/";
DirectoryInfo di = new DirectoryInfo(strXLStoredDirectoryPath);
string fileName = flUpldSelectFile.FileName;
if (!File.Exists(strXLStoredDirectoryPath))
{
Directory.CreateDirectory(strXLStoredDirectoryPath);
di.Attributes = FileAttributes.Normal;
}
string strCreateXLFileDestinationPath = strXLStoredDirectoryPath + fileName;
if (File.Exists(strCreateXLFileDestinationPath))
{
File.Delete(strCreateXLFileDestinationPath);
}
flUpldSelectFile.SaveAs(strCreateXLFileDestinationPath);
di.Attributes = FileAttributes.ReadOnly;
}
catch (Exception)
{
throw;
}
}
please guide.........
-***********************************************************************
Still problem there . it is not resolved . getting UnauthorizedAccessException. as access denied to deleting file. I m tired now . please help; I tried many things..please help
-***********************************************************************
Is may be iffect of VSS ? i am using that
UPDATE:
Part of your issue might be what is saving/creating this file. If you're using a built in "Save" or "SaveAs" feature the underlying file stream might still have a lock on the file. writing your own save logic with a FileStream wrapped in a Using statement will help dispose the stream right when you're done thus allowing you to further manipulate the file within the same context.
if flUpldSelectFile.SaveAs(strCreateXLFileDestinationPath); is the only logic that saves the file then get rid of the built in SaveAs functionality. write your own save logic using a FileStream wrapped in a Using block.
In your example i can't see what flUpldSelectFile is so i am assuming it is a System.Web.UI.WebControls.FileUpload control. Here is an example of rolling your own save logic.
using (FileStream fs = new FileStream(strCreateXLFileDestinationPath, FileMode.Create))
{
byte[] buffer = flUpldSelectFile.FileBytes;
fs.Write(buffer, 0, buffer.Length);
}
As stated previously, use this tool to find out if there is a lock on the file by another process.
ORIGINAL
Pop open this wonderful tool and search for that file to see who/what has it locked
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
(source: microsoft.com)
If your code is working under IIS , Note that ASPNET user doesn't have access to computer files, you should give access to it, that is not recommended, or store you files in the place where ASPNET user have access
see here
Try a combination of these 2 steps:
Set the IIS application pool to run under an account with privileges such as a domain account or local user account (not a default account like local service or local system). Instructions for IIS7.
Turn impersonation on in the web.config file, in the <system.web> section:
<identity impersonate="true"/>
<identity impersonate="true" userName="contoso\Jane" password="password"/>
I think the message is clear, you do not have authorization to delete the file or it is opened by another application. I bet 2$ you can't delete the file manually either.
As others have said, this is because IIS runs your application as a user with restricted access rights. This is a wise security precaution, so that your system is less vulnerable to malicious attacks.
What you need to do is to give the ASPNET user access to the specific folder. You do that from the security tab in the properties of a folder. The user you need to give full control to depends on the version of IIS you are using. In Windows XP it is ASPNET. In Windows Server 2003, 2008 and Windows Vista, 7 it is NETWORK_SERVICE.
See also this question for more details.
Make sure the file isn't opened or
locked by another user/process.
Make sure ASPNET user has access on the file\folder (check the file\folder's property using windows explorer and go to security tab. check if ASPNET user is added there).
One of two things are happening. Either the file is already open, or the permission of the user running IIS does not have the proper permissions.
Either way, this utility ProcMon: Proc Mon
will help you determine the issue. Run ProcMon, kick off your process to try and delete the file. Then go back to procmon. Hit Ctrl-E to turn off the capture, then Ctrl-F to find. Enter the name of the file you're trying to delete. Then once you've found the correct line with the access denied (or similar error) Double click on the the line to get further information. When you click on the Process tab, it will show you the exact user that is trying to delete the file.
So, if it is a file permission issue, you now know the exact user, and can therefore go to the file system right click on the folder that houses the file you are trying to delete, and grant that user permissions to read/write/update that folder.
Second, if the file is locked open instead of a permissions issue, you will have to find out what process is holding open the file. If you are also writing this file in another part of your code, perhaps you are not closing it properly or releasing the object reference.
Have you verified that the file does not have the read-only attribute set?
I don't think we have enough info to be helpful. What is the security context (identity) during the call to Delete? Is the application impersonating the end user? If it is, how are they authenticated? If by Windows / Active Directory, then you'll need to verify that user's access rights to the specific file. If by Forms login, then you should probably not impersonate and verify that the AppPool's security context has the appropriate access rights.

Access denied to path , when uploading image to folder in server

Am getting error when you are going to upload the file on specified folder in the server. Here I am going to upload P6100083.jpg in storeimg folder. When I am going to upload I am getting the following error:
Access to the path 'C:\inetpub\vhosts\bookmygroups.com\httpdocs\storeimg\P6100083.jpg' is denied.
Can anyone help me... How to use permisiion and were to use...
My code is while uploading image
if (FileUpload1.HasFile)
{
float fileSize = FileUpload1.PostedFile.ContentLength;
float floatConverttoKB = fileSize / 1024;
float floatConverttoMB = floatConverttoKB / 1024;
string DirName = "storeimg";
string savepath = Server.MapPath(DirName + "/");
DirectoryInfo dir = new DirectoryInfo(savepath);
// string savepath = "C:\\Documents and Settings\\ssis3\\My Documents\\Visual Studio 2005\\WebSites\\finalbookgroups\\" + DirName + "\\";
if (fileSize < 4194304)
{
string filename = Server.HtmlEncode(FileUpload1.FileName);
string extension = System.IO.Path.GetExtension(filename).ToUpper();
if (extension.Equals(".jpg") || extension.Equals(".JPG") || extension.Equals(".JPEG") || extension.Equals(".GIF"))
{
savepath += filename;
FileUpload1.SaveAs(savepath);
}
}
}
Thanks in advance
I have no success making my upload or any write operation on filesystem work on IIS7.
Still getting the error: Access to the path is denied.
My AppPool is running under Network Service. I have granted all kinds of accounts Full Control (Network Service, Network, IIS_IUSR, Administrator, Users, Everyone), restarted the webservice several times, studied all IIS7 settings, googled for two hours and nothing works.
IIS7 and WS2008 s-u-c-k-s. Sorry for the term. Anybody can help?
I just wanted to add: I noticed that in the upload's destination folder's Properties there's this checkbox named "Read-only (Only applies to files in folder)" and it's checked. It cannot be unchecked, comes back checked after unchecking and clicking the OK button. Is that IIS7 guarding it?
Editing this message to add the SOLUTION: My admin has turned off the silly UAC "the security confirmation feature" on our server, restarted the machine and it works now. No "write" access rights for "Network Service" or any other IIS-used account was needed. When accessing the file system in a ASP.NET web application using the integrated authentication and having the impersonation set to true in its web.confing, the file system seems to be accessed by the authentified end-user's account, not by the Network Service account which the AppPool is running under. (Many people tell you to set Network Service permissions, but that is not true.) So you need to set the "write" permissions for your end-users (usually domain users: "DOMAIN\domain users") on your particular folder.
Oh yea, and the "Read-only (Only applies to files in folder)" checkbox mentioned above does not seem to have any effect. However Microsoft says "some programs might have problems writing to such folder and you should use command line statement "attrib -r -s" to get rid of the Read-Only attribute" -- but it won't work. It will stay there checked-grayed. But don't worry about that. Microsoft becomes more and more silly every day.
Indead, it's a server issue.
You need to verify if the user underlying your application pool has write access to the directory.
If you use IIS7, you have a new feature that helps you give custom write to this user and dun need to change the user.
Look at this link:
http://www.adopenstatic.com/cs/blogs/ken/archive/2008/01/29/15759.aspx
Hope this helps.
This is a server issue. Make sure you have the necessary rights to write files.
Btw, since you call ToUpper() on extension there's no reason to test for ".jpg".
If you are using Plesk Panel, go to file manager of Plesk Panel. List files and folders inside "httpdocs". Each file and folder has a lock icon at the very right. Click that of "storeimg" folder to change permissions. Click advenced button. Give full permission to these:
Plesk IIS WP User (IWPD_214(your_login_name))
Plesk IIS WP User (IWPD_214(your_login_name))
And click OK.
First you check the permission is enable or not if not then go to that folder which folder has to be use for containing files then right click on folder then there will be display folder properties then click on security there will be display multiple number of user which user have to be permit then click allow that all permission will be activated.
First, make sure your code runs fine locally (I assume that something you've already done).
Then deploy to your TEST or UAT environment. If you're having issue there, then this is a configuration issue. Make sure the service account under which your website's app pool is running has access to the folder.
Please make use of C# method Path.Combine() to build up your path and avoid issues with leading or trailing / and \.

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