R – SharePoint 2007: How to get List URL from List Name using Web services

mosssharepointwss

I have a MOSS List, how can I get the URL for the list from the List name only using web service methods?

Best Answer

For the next poor sucker working without documentation:

/// <summary>
        /// The SharePoint Web Service: Lists.
        /// </summary>
        private readonly sharepoint.lists.Lists wsLists = new sharepoint.lists.Lists();

private string GetListUrlFromName(string listName)
        {
            XmlNode node = wsLists.GetList(listName);
            return node.Attributes["RootFolder"].Value; 
        }

Related Solutions

Upload a file to SharePoint through the built-in web services

Example of using the WSS "Copy" Web service to upload a document to a library...

public static void UploadFile2007(string destinationUrl, byte[] fileData)
{
    // List of desination Urls, Just one in this example.
    string[] destinationUrls = { Uri.EscapeUriString(destinationUrl) };

    // Empty Field Information. This can be populated but not for this example.
    SharePoint2007CopyService.FieldInformation information = new 
        SharePoint2007CopyService.FieldInformation();
    SharePoint2007CopyService.FieldInformation[] info = { information };

    // To receive the result Xml.
    SharePoint2007CopyService.CopyResult[] result;

    // Create the Copy web service instance configured from the web.config file.
    SharePoint2007CopyService.CopySoapClient
    CopyService2007 = new CopySoapClient("CopySoap");
    CopyService2007.ClientCredentials.Windows.ClientCredential = 
        CredentialCache.DefaultNetworkCredentials;
    CopyService2007.ClientCredentials.Windows.AllowedImpersonationLevel = 
        System.Security.Principal.TokenImpersonationLevel.Delegation;

    CopyService2007.CopyIntoItems(destinationUrl, destinationUrls, info, fileData, out result);

    if (result[0].ErrorCode != SharePoint2007CopyService.CopyErrorCode.Success)
    {
        // ...
    }
}

Accessing Sharepoint Web Services without authentication

John,

The security model of the web application through which you're trying to access the web service in question is going to drive whether or not you can access the service anonymously. If you're attempting to access the web service through a web application on which anonymous access is enabled, then you'll be able to hit the web service. Go ahead and try this on an anonymous site (if you have one): http://yoursitehere/_vti_bin/lists.asmx. You'll get the friendly service page back, no auth required.

Here's the catch: once you traverse the web service layer, you've got another layer of security to deal with. SharePoint itself is going to want to check permissions for access via the web services just as it normally would, so unless you are attempting an operation or trying to access data that is allowed for anonymous users, you're going to get blocked.

You have a handful of options:

Simply ensure that everything you're trying to do is permitted anonymously. This may sound easy, but it can actually be pretty difficult for anything but the simplest and straightforward of operations. Most organizations, too, don't care for opening things up to this extent.
If you control the code that's calling the web service, then you have the ability to attach credentials to the web service request. I recommend starting here, as it is going to make things a lot easier than trying to throw everything wide open. Plenty of examples exist on attaching credentials to a web service proxy (e.g., http://msdn.microsoft.com/en-us/security/cc178918.aspx)
Finally, you could write your own web service that wraps the SharePoint web service (or services) of interest. You could permit anonymous access to your web service and then adopt an appropriate security context within your own service to access SharePoint with the required permissions level.

I hope this helps!

Sean

Best Answer

Related Solutions

Upload a file to SharePoint through the built-in web services

Accessing Sharepoint Web Services without authentication

Related Topic