ASP.NET Discussion Boards

Lea Hayes9-Sep-08 4:36

9-Sep-08 4:36

Hi guys!

I have just created a simple user control which displays a directory listing of a specified root location on the server.

I then discovered that the Directory.GetDirectories and Directory.GetFiles methods ignore the access permissions of the logged in user. So, even though the user may not be able to view a particular resource, it is still being shown within the directory listing.

What I want to do is somehow filter out directories and files which the user does not have access to.

I am controlling directory/file access via 'Web.config' files. And this works a treat. I just cannot find an option to verify whether a user has access to a particular directory or not. Below is some pseudo-code which describes what I am trying to achieve, but I do not know what goes in the two if statements.

string[] dirs = Directory.GetDirectories(rootPath);
string[] files = Directory.GetFiles(rootPath);

// Fetch directories and files.
foreach (string dirPath in dirs)
{
    if (Page.User is allowed to access dirPath)
    {
       // Render directory entry.
    }
}
foreach (string filePath in files)
{
    if (Page.User is allowed to access filePath)
    {
        // Render file entry.
    }
}

Any advice would be greatly appreciated Smile | :)

Thanks,
Lea Hayes

Re: Directory/File Permissions with ASP.NET

Manas Bhardwaj9-Sep-08 5:31

Manas Bhardwaj

9-Sep-08 5:31

lhayes00 wrote:
I just cannot find an option to verify whether a user has access to a particular directory or not

By Web Princliples, a web user will never have access to any directory on Web Server.
What you can do here is the impersonation.

Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: Directory/File Permissions with ASP.NET

Lea Hayes9-Sep-08 12:06

Lea Hayes

9-Sep-08 12:06

Hi,

Let's assume that the series of web.config files allows the user 'Bob' to access anything and everything. If 'Bob' tries to access the URL "webserver.com/users/bob/picture.jpg", he can...if anyone else tries to access this file a not authorized page appears to the user. This part works fantastic.

The Directory.GetDirectories method returns an array of paths which are relative to the server itself (i.e. "c:\wherever\users\bob\"). I have just found out that I could use the UrlAuthorizationModule. This would mean doing something like the following:

string[] files = Directory.GetFiles(path);

string rootPath = Page.ResolveClientUrl("~/filesroot");
foreach(string file in files)
{
   string tempPath = file.Replace(rootPath, "~/filesroot/");
   if (UrlAuthorizationModule.CheckUrlAccessForPrincipal(tempPath, Page.User, "GET"))
   {
       // Do rendering here...
   }
}

I have two questions:

1) Is there a better way of doing this, or a way which uses mapped paths instead of virtual paths? I tried using the FileAuthorizationModule but got completely lost as this takes an IntPtr token instead of an IPrinciple.

2) What do you mean by impersonation?

Thanks,
Lea Hayes

i want to connect Secure Ftp(SFTP) through my web application......

Shaik Haneef9-Sep-08 4:15

Shaik Haneef

9-Sep-08 4:15

i want to connect Secure Ftp(SFTP) through my web application, I found some but they are all Trail version, i want free software, Is there any website providing such type of service.Can any one help me in regards.

what is the problem with this piece of code?

snouto9-Sep-08 3:12

snouto

9-Sep-08 3:12

protected void Page_Load(object sender, EventArgs e)
{
//detecting the browser capability
IDictionary caps = Request.Browser.Capabilities;
IDictionaryEnumerator enumerator = caps.GetEnumerator();
string cap = string.Empty;
enumerator.Reset();
while (enumerator.MoveNext())
{
cap += enumerator.Key.ToString() + " : " + enumerator.Value.ToString() + "
";
}
Label1.Text = cap;

}

it gives me nullreferenceException :object reference not set to an instance of an object

but what is the problem , eveything is fine in the code ????

Human knowledge belongs to the world.

Re: what is the problem with this piece of code?

Manas Bhardwaj9-Sep-08 3:31

Manas Bhardwaj

9-Sep-08 3:31

snouto wrote:
it gives me nullreferenceException :object reference not set to an instance of an object

while (enumerator.MoveNext())
{
    cap += ((System.Collections.DictionaryEntry)(enumerator.Current)).Key.ToString() + " : " + ((System.Collections.DictionaryEntry)(enumerator.Current)).KeyValue.ToString() + " ";
}

Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

SID is same for every User

Piyush Vardhan Singh9-Sep-08 2:01

Piyush Vardhan Singh

9-Sep-08 2:01

i am writing code for getting SID .
CODE:-
Dim _Sid As String = "S-1-5-21-1817689559-1280207852-1215589284"
Dim _sidTest3 As String = "S-1-5-21-1817689559-1280207852-1215589284 "
Dim path As String = "LDAP://d" 'Idea Cellular Ltd.
Dim ROOT As DirectoryEntry = New DirectoryEntry(path, "test2", "password", AuthenticationTypes.Secure)

Response.Write(New SecurityIdentifier(CType(ROOT.Properties("objectSid")(0), Byte()), 0).Value) 'CType(ROOT.Properties("objectSid")(0).Value, Byte)))

i am getting same SID When i change The user name(test1,test2,test3......)

i want to know it's right or wrong SID is same for every User

Piyush Vardhan Singh
p_vardhan14@rediffmail.com
http://holyschoolofvaranasi.blogspot.com
http://holytravelsofvaranasi.blogspot.com

Reading from excel file.

hemant.kaushal9-Sep-08 1:50

hemant.kaushal

9-Sep-08 1:50

Hi,
In my application I m using excel file to enter the values in database.
It is working fine but it is giving a strange error.
If in a column let A

If we have value "DMIX00008" and "65400004"

Then it is reading values like "65400004" but values like "DMIX00008" are coming blank.

I think it is reading that column datatype as integer or numeric.
But i want that column to display values as they are entered.
How to rectify this problem?

Re: Reading from excel file.

Dilip H. Patel9-Sep-08 2:08

Dilip H. Patel

9-Sep-08 2:08

Hi Hemant,

I think that you are filling the datatable directly from the excel. and your first value in excel is numeric. that's why this problem is occured.

Try this one.
first you create columns of datatable, which you want to fill. make sure that column's datatype is string. and then try to fill it.

Regards,

Dilip Patel

Re: Reading from excel file.

hemant.kaushal9-Sep-08 3:01

hemant.kaushal

9-Sep-08 3:01

Thaks dilip_rollwala,

I change the first value to alphanumetic and it works.
But I cant create columns of datatable first.

How to find Password from Active directory using SID?

sumit70349-Sep-08 1:14

sumit7034

9-Sep-08 1:14

How to find Password of a user from Active directory using SID?

Re: How to find Password from Active directory using SID?

Ashfield9-Sep-08 1:49

Ashfield

9-Sep-08 1:49

Well, if you scroll down about 5 questions you will find someone (probably one of your classmates) has asked this very same question and received some replies.

Bob
Ashfield Consultants Ltd

Re: How to find Password from Active directory using SID?

sumit70349-Sep-08 1:56

sumit7034

9-Sep-08 1:56

Well his post was to find SID from Active directory

my Question is to find Password from Active directory using SID

Re: How to find Password from Active directory using SID?

Ashfield9-Sep-08 4:37

Ashfield

9-Sep-08 4:37

sumit7034 wrote:
Well his post was to find SID from Active directory

..and if you looked at the link in the reply it shows you how to get all sorts of data back.

Just take the code from the link, run in debug mode and look at all the properties available.

Bob
Ashfield Consultants Ltd

Re: How to find Password from Active directory using SID?

Abhijit Jana9-Sep-08 17:58

Abhijit Jana

9-Sep-08 17:58

sumit7034 wrote:
How to find Password of a user from Active directory using SID?

what does it mean ? you want to retreive user password from AD.
i think this is not possible, you can use password only for Authentication purpose and you can Reset it.

cheers,
Abhijit
Think Sharp | Code Sharp | C Sharp

creating dynamic pages in asp.net c#

VijayVishwakarma9-Sep-08 0:32

VijayVishwakarma

9-Sep-08 0:32

hi,

can anyone tell how to create dynamic pages in asp.net

I wanted to know how the pages in this site are created with the names in the menu links(brand products)

http://www.kixclusive.com/c-10-New-Arrivals.aspx[^]

thanks

Vijay V.

Yash Softech

Re: creating dynamic pages in asp.net c#

eyeseetee9-Sep-08 0:46

eyeseetee

9-Sep-08 0:46

I think you need to look at some beginners articles on how asp.net works before you go any further.

The answers posted by me are suggestions only and cannot be used in anyway against me.

Re: creating dynamic pages in asp.net c#

VijayVishwakarma9-Sep-08 0:50

VijayVishwakarma

9-Sep-08 0:50

thanks.
but cant I get any online resource for this?

Vijay V.

Yash Softech

Re: creating dynamic pages in asp.net c#

Manas Bhardwaj9-Sep-08 1:29

Manas Bhardwaj

9-Sep-08 1:29

http://quickstarts.asp.net/QuickStartv20/default.aspx[^]

Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good.

Re: creating dynamic pages in asp.net c#

VijayVishwakarma9-Sep-08 2:25

VijayVishwakarma

9-Sep-08 2:25

thanks for the link but I m not looking for this.

Vijay V.

Yash Softech

Re: creating dynamic pages in asp.net c#

J4amieC9-Sep-08 2:57

J4amieC

9-Sep-08 2:57

Mind telling us what you are looking for then? I mean its one thing to ask people to STFW for you, but without giving us too much of a clue what you're after, its a little hard.

Re: creating dynamic pages in asp.net c#

VijayVishwakarma9-Sep-08 21:11

VijayVishwakarma

9-Sep-08 21:11

i browsed through some asp.net sites (for eg: kixclusive.com).

in this site I noticed that the name of the page and the name of the product which the pages is displaying are same.

I think its that they have created which has the basic info that needs to be displayed and they are just passing the values. the pages is created at runtime and displayed.

i just wanted to know how is this done in asp.net 2.0.

here in code project too. the article pages are named after the name of article like http://www.codeproject.com/KB/webforms/GridViewRedux.aspx[^]

regards

Vijay V.

Yash Softech

Re: creating dynamic pages in asp.net c#

Steven A. Lowe12-Sep-08 18:49

Steven A. Lowe

12-Sep-08 18:49

I think what you're after is called "URL Rewriting"
click for google search

Best regards,
Steven A. Lowe
CEO, Innovator LLC
www.nov8r.com

Re: creating dynamic pages in asp.net c#

VijayVishwakarma12-Sep-08 19:18

VijayVishwakarma

12-Sep-08 19:18

Thanks a lot Steven.

this is the thing which I was looking after from past many weeks.

Vijay V.

Yash Softech

style sheet for gridview

nivasss298-Sep-08 23:58

nivasss29

8-Sep-08 23:58

hi..
i placed a gridview in the div for scrolling. i gave style for gridview header as
position:relative;
z-index:10;
sothat gridview header will be fixed and griddata is scrollable( when scrolling ).Now the problem is i have textbox and dropdownlist in same template field ,here when i try to scroll only textbox is going under the
grid view header but dropdownlist coming over the header.
pls help me

Thanks in advance
sri.

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