WebDAV - Permissions on message with attachments
- From: scanlonmeister@xxxxxxxxx
- Date: 16 Jan 2006 06:13:24 -0800
What permissions do you need to set on an exchange message item to be
able to use the
X-MS-ENUMATTS WebDAV method.
I am using code supplied directly from MSDN web site and I always get a
403 Error returned in the response object. I have assumed that this
should be to do with not having access to the attachment of the
message. I can run all other queries ok. If I query the
attachment-filename property I get a similar error in the HttpResponse.
I am wondering what it is that is stopping me obtaining attachments
from Outlook Web Access.
If you have any pointers - or if any of you have seen this situation
before then I would be very grateful. The code I am using is below.. as
I say, I always get a 403 from the response object and I am unable to
find out why.
Can anybody can tell me what permissions I need to set on the message
and how I set them with WebDAV - possibly a sample?
[STAThread]
static void Main(string[] args)
{
// Variables.
System.Net.HttpWebRequest Request;
System.Net.WebResponse Response;
System.Net.CredentialCache MyCredentialCache;
string strMessageURI =
"http://server/exchange/username/inbox/TestMessage.eml/";;
string strUserName = "username";
string strPassword = "!Password";
string strDomain = "Domain";
System.IO.Stream ResponseStream = null;
System.Xml.XmlDocument ResponseXmlDoc = null;
System.Xml.XmlNode root = null;
System.Xml.XmlNamespaceManager nsmgr = null;
System.Xml.XmlNodeList PropstatNodes = null;
System.Xml.XmlNodeList HrefNodes = null;
System.Xml.XmlNode StatusNode = null;
System.Xml.XmlNode PropNode = null;
try
{
// Create a new CredentialCache object and fill it with the
network
// credentials required to access the server.
MyCredentialCache = new System.Net.CredentialCache();
MyCredentialCache.Add( new System.Uri(strMessageURI),
"NTLM",
new System.Net.NetworkCredential(strUserName,
strPassword, strDomain)
);
// Create the HttpWebRequest object.
Request =
(System.Net.HttpWebRequest)HttpWebRequest.Create(strMessageURI);
// Add the network credentials to the request.
Request.Credentials = MyCredentialCache;
// Specify the method.
Request.Method = "X-MS-ENUMATTS";
// Send the X-MS-ENUMATTS method request and get the
// response from the server.
Response = (HttpWebResponse)Request.GetResponse();
// Get the XML response stream.
ResponseStream = Response.GetResponseStream();
// Create the XmlDocument object from the XML response
stream.
ResponseXmlDoc = new System.Xml.XmlDocument();
// Load the XML response stream.
ResponseXmlDoc.Load(ResponseStream);
// Get the root node.
root = ResponseXmlDoc.DocumentElement;
// Create a new XmlNamespaceManager.
nsmgr = new
System.Xml.XmlNamespaceManager(ResponseXmlDoc.NameTable);
// Add the DAV: namespace, which is typically assigned the
a: prefix
// in the XML response body. The namespaceses and their
associated
// prefixes are listed in the attributes of the
DAV:multistatus node
// of the XML response.
nsmgr.AddNamespace("a", "DAV:");
// Add the http://schemas.microsoft.com/mapi/proptag/
namespace, which
// is typically assigned the d: prefix in the XML response
body.
nsmgr.AddNamespace("d",
"http://schemas.microsoft.com/mapi/proptag/";);
// Use an XPath query to build a list of the DAV:propstat
XML nodes,
// corresponding to the returned status and properties of
// the file attachment(s).
PropstatNodes = root.SelectNodes("//a:propstat", nsmgr);
// Use an XPath query to build a list of the DAV:href
nodes,
// corresponding to the URIs of the attachement(s) on the
message.
// For each DAV:href node in the XML response, there is an
// associated DAV:propstat node.
HrefNodes = root.SelectNodes("//a:href", nsmgr);
// Attachments found?
if(HrefNodes.Count > 0)
{
// Display the number of attachments on the message.
Console.WriteLine(HrefNodes.Count + " attachments
found...");
// Iterate through the attachment properties.
for(int i=0;i<HrefNodes.Count;i++)
{
// Use an XPath query to get the DAV:status node from
the DAV:propstat node.
StatusNode =
PropstatNodes[i].SelectSingleNode("a:status", nsmgr);
// Check the status of the attachment properties.
if(StatusNode.InnerText != "HTTP/1.1 200 OK")
{
Console.WriteLine("Attachment: " +
HrefNodes[i].InnerText);
Console.WriteLine("Status: " +
StatusNode.InnerText);
Console.WriteLine("");
}
else
{
Console.WriteLine("Attachment: " +
HrefNodes[i].InnerText);
Console.WriteLine("Status: " +
StatusNode.InnerText);
// Get the CdoPR_ATTACH_FILENAME_W MAPI property
tag,
// corresponding to the attachment file name. The
// http://schemas.microsoft.com/mapi/proptag/
namespace is typically
// assigned the d: prefix in the XML response
body.
PropNode =
PropstatNodes[i].SelectSingleNode("a:prop/d:x3704001f", nsmgr);
Console.WriteLine("Attachment name: " +
PropNode.InnerText);
// Get the CdoPR_ATTACH_EXTENSION_W MAPI property
tag,
// corresponding to the attachment file extension.
PropNode =
PropstatNodes[i].SelectSingleNode("a:prop/d:x3703001f", nsmgr);
Console.WriteLine("File extension: " +
PropNode.InnerText);
// Get the CdoPR_ATTACH_SIZE MAPI property tag,
// corresponding to the attachment file size.
PropNode =
PropstatNodes[i].SelectSingleNode("a:prop/d:x0e200003", nsmgr);
Console.WriteLine("Attachment size: " +
PropNode.InnerText);
Console.WriteLine("");
}
}
}
else
{
Console.WriteLine("No attachments found.");
}
// Clean up.
ResponseStream.Close();
Response.Close();
}
catch(Exception ex)
{
// Catch any exceptions. Any error codes from the
X-MS-ENUMATTS
// method request on the server will be caught here, also.
Console.WriteLine(ex.Message);
}
Best Regards,
James Scanlon
.
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