/// <summary>
/// Processes the request.
/// </summary>
/// <param name="server">The <see cref="WebDavServer" /> through which the request came in from the client.</param>
/// <param name="context">The
/// <see cref="IHttpListenerContext" /> object containing both the request and response
/// objects to use.</param>
/// <param name="store">The <see cref="IWebDavStore" /> that the <see cref="WebDavServer" /> is hosting.</param>
/// <exception cref="WebDAVSharp.Server.Exceptions.WebDavPreconditionFailedException"></exception>
/// <param name="response"></param>
/// <param name="request"></param>
protected override void OnProcessRequest(
WebDavServer server,
IHttpListenerContext context,
IWebDavStore store,
XmlDocument request,
XmlDocument response)
{
if (!WebDavStoreItemLock.LockEnabled)
{
throw new WebDavNotImplementedException("Lock support disabled");
}
/***************************************************************************************************
* Retreive al the information from the request
***************************************************************************************************/
// read the headers
int depth = GetDepthHeader(context.Request);
string timeout = GetTimeoutHeader(context.Request);
string locktoken = GetLockTokenIfHeader(context.Request);
int lockResult = 0;
// Initiate the XmlNamespaceManager and the XmlNodes
XmlNamespaceManager manager;
XmlNode lockscopeNode, locktypeNode, ownerNode;
if (string.IsNullOrEmpty(locktoken))
{
#region New Lock
// try to read the body
try
{
StreamReader reader = new StreamReader(context.Request.InputStream, Encoding.UTF8);
string requestBody = reader.ReadToEnd();
if (!requestBody.Equals("") && requestBody.Length != 0)
{
request.LoadXml(requestBody);
if (request.DocumentElement != null &&
request.DocumentElement.LocalName != "prop" &&
request.DocumentElement.LocalName != "lockinfo")
{
WebDavServer.Log.Debug("LOCK method without prop or lockinfo element in xml document");
}
manager = new XmlNamespaceManager(request.NameTable);
manager.AddNamespace("D", "DAV:");
manager.AddNamespace("Office", "schemas-microsoft-com:office:office");
manager.AddNamespace("Repl", "http://schemas.microsoft.com/repl/");
manager.AddNamespace("Z", "urn:schemas-microsoft-com:");
// Get the lockscope, locktype and owner as XmlNodes from the XML document
lockscopeNode = request.DocumentElement.SelectSingleNode("D:lockscope", manager);
locktypeNode = request.DocumentElement.SelectSingleNode("D:locktype", manager);
ownerNode = request.DocumentElement.SelectSingleNode("D:owner", manager);
}
else
{
throw new WebDavPreconditionFailedException();
}
}
catch (Exception ex)
{
WebDavServer.Log.Warning(ex.Message);
throw;
}
/***************************************************************************************************
* Lock the file or folder
***************************************************************************************************/
// Get the parent collection of the item
IWebDavStoreCollection collection = GetParentCollection(server, store, context.Request.Url);
WebDavLockScope lockscope = (lockscopeNode.InnerXml.StartsWith("<D:exclusive"))
? WebDavLockScope.Exclusive
: WebDavLockScope.Shared;
//Only lock available at this time is a Write Lock according to RFC
WebDavLockType locktype = (locktypeNode.InnerXml.StartsWith("<D:write"))
? WebDavLockType.Write
: WebDavLockType.Write;
string userAgent = context.Request.Headers["User-Agent"];
WindowsIdentity Identity = (WindowsIdentity)Thread.GetData(Thread.GetNamedDataSlot(WebDavServer.HttpUser));
// Get the item from the collection
try
{
var item = GetItemFromCollection(collection, context.Request.Url);
String lockLogicalKey = context.Request.Url.AbsoluteUri;
if (item != null)
{
lockLogicalKey = item.LockLogicalKey;
}
if (item != null && !item.Lock())
{
lockResult = 423; //Resource cannot be locked
}
else
{
//try acquiring a standard lock,
lockResult = WebDavStoreItemLock.Lock(
context.Request.Url,
lockLogicalKey,
lockscope,
locktype,
Identity.Name,
userAgent,
ref timeout,
out locktoken,
request,
depth);
}
}
catch (Exception ex)
{
WebDavServer.Log.Error(String.Format("Error occourred while acquiring lock {0}", context.Request.Url), ex);
lockResult = 423; //Resource cannot be locked some exception occurred
}
#endregion
}
else
{
#region Refreshing a lock
//Refresh lock will ref us back the original XML document which was used to request this lock, from
//this we will grab the data we need to build the response to the lock refresh request.
lockResult = WebDavStoreItemLock.RefreshLock(context.Request.Url, locktoken, ref timeout, out request);
if (request == null)
{
context.SendSimpleResponse(409);
return;
}
try
{
if (request.DocumentElement != null &&
request.DocumentElement.LocalName != "prop" &&
request.DocumentElement.LocalName != "lockinfo")
{
WebDavServer.Log.Debug("LOCK method without prop or lockinfo element in xml document");
}
manager = new XmlNamespaceManager(request.NameTable);
manager.AddNamespace("D", "DAV:");
manager.AddNamespace("Office", "schemas-microsoft-com:office:office");
manager.AddNamespace("Repl", "http://schemas.microsoft.com/repl/");
manager.AddNamespace("Z", "urn:schemas-microsoft-com:");
// Get the lockscope, locktype and owner as XmlNodes from the XML document
lockscopeNode = request.DocumentElement.SelectSingleNode("D:lockscope", manager);
locktypeNode = request.DocumentElement.SelectSingleNode("D:locktype", manager);
ownerNode = request.DocumentElement.SelectSingleNode("D:owner", manager);
}
catch (Exception ex)
{
WebDavServer.Log.Warning(ex.Message);
throw;
}
#endregion
}
/***************************************************************************************************
* Create the body for the response
***************************************************************************************************/
// Create the basic response XmlDocument
const string responseXml = "<?xml version=\"1.0\" encoding=\"utf-8\" ?><D:prop xmlns:D=\"DAV:\"><D:lockdiscovery><D:activelock/></D:lockdiscovery></D:prop>";
response.LoadXml(responseXml);
// Select the activelock XmlNode
XmlNode activelock = response.DocumentElement.SelectSingleNode("D:lockdiscovery/D:activelock", manager);
// Import the given nodes
activelock.AppendChild(response.ImportNode(lockscopeNode, true));
activelock.AppendChild(response.ImportNode(locktypeNode, true));
activelock.AppendChild(response.ImportNode(ownerNode, true));
// Add the additional elements, e.g. the header elements
// The timeout element
WebDavProperty timeoutProperty = new WebDavProperty("timeout", timeout);// timeout);
activelock.AppendChild(timeoutProperty.ToXmlElement(response));
// The depth element
WebDavProperty depthProperty = new WebDavProperty("depth", (depth == 0 ? "0" : "Infinity"));
activelock.AppendChild(depthProperty.ToXmlElement(response));
// The locktoken element
WebDavProperty locktokenProperty = new WebDavProperty("locktoken", string.Empty);
XmlElement locktokenElement = locktokenProperty.ToXmlElement(response);
WebDavProperty hrefProperty = new WebDavProperty("href", locktoken);//"opaquelocktoken:e71d4fae-5dec-22df-fea5-00a0c93bd5eb1");
locktokenElement.AppendChild(hrefProperty.ToXmlElement(response));
activelock.AppendChild(locktokenElement);
// The lockroot element
WebDavProperty lockRootProperty = new WebDavProperty("lockroot", string.Empty);
XmlElement lockRootElement = lockRootProperty.ToXmlElement(response);
WebDavProperty hrefRootProperty = new WebDavProperty("href", context.Request.Url.AbsoluteUri);//"lockroot
lockRootElement.AppendChild(hrefRootProperty.ToXmlElement(response));
activelock.AppendChild(lockRootElement);
/***************************************************************************************************
* Send the response
***************************************************************************************************/
// convert the StringBuilder
string resp = response.InnerXml;
if (WebDavServer.Log.IsEnabled(Serilog.Events.LogEventLevel.Debug))
{
WebDavServer.Log.Debug(
@"Request {0}:{1}:{2}
Request
{3}
Response:
{4}",
context.Request.HttpMethod, context.Request.RemoteEndPoint, context.Request.Url,
request.Beautify(),
response.Beautify());
}
byte[] responseBytes = Encoding.UTF8.GetBytes(resp);
context.Response.StatusCode = lockResult;
context.Response.StatusDescription = HttpWorkerRequest.GetStatusDescription(lockResult);
// set the headers of the response
context.Response.ContentLength64 = responseBytes.Length;
context.Response.AdaptedInstance.ContentType = "text/xml";
// the body
context.Response.OutputStream.Write(responseBytes, 0, responseBytes.Length);
context.Response.Close();
}
/// <summary>
/// Processes the request.
/// </summary>
/// <param name="context">The
/// <see cref="IWebDavContext" /> object containing both the request and response
/// objects to use.</param>
/// <param name="store">The <see cref="IWebDavStore" /> that the <see cref="WebDavServer" /> is hosting.</param>
/// <exception cref="WebDAVSharp.Server.Exceptions.WebDavPreconditionFailedException"></exception>
public void ProcessRequest(IWebDavContext context, IWebDavStore store)
{
/***************************************************************************************************
* Retreive al the information from the request
***************************************************************************************************/
// read the headers
int depth = GetDepthHeader(context.Request);
string timeout = GetTimeoutHeader(context.Request);
string locktoken = GetLockTokenIfHeader(context.Request);
int lockResult;
// Initiate the XmlNamespaceManager and the XmlNodes
XmlNamespaceManager manager;
XmlNode lockscopeNode, locktypeNode, ownerNode;
XmlDocument requestDocument = new XmlDocument();
if (string.IsNullOrEmpty(locktoken))
{
#region New Lock
// try to read the body
try
{
StreamReader reader = new StreamReader(context.Request.InputStream, Encoding.UTF8);
string requestBody = reader.ReadToEnd();
if (!requestBody.Equals("") && requestBody.Length != 0)
{
requestDocument.LoadXml(requestBody);
if (requestDocument.DocumentElement != null &&
requestDocument.DocumentElement.LocalName != "prop" &&
requestDocument.DocumentElement.LocalName != "lockinfo")
{
WebDavServer.Log.Debug("LOCK method without prop or lockinfo element in xml document");
}
manager = new XmlNamespaceManager(requestDocument.NameTable);
manager.AddNamespace("D", "DAV:");
manager.AddNamespace("Office", "schemas-microsoft-com:office:office");
manager.AddNamespace("Repl", "http://schemas.microsoft.com/repl/");
manager.AddNamespace("Z", "urn:schemas-microsoft-com:");
// Get the lockscope, locktype and owner as XmlNodes from the XML document
lockscopeNode = requestDocument.DocumentElement.SelectSingleNode("D:lockscope", manager);
locktypeNode = requestDocument.DocumentElement.SelectSingleNode("D:locktype", manager);
ownerNode = requestDocument.DocumentElement.SelectSingleNode("D:owner", manager);
}
else
{
throw new WebDavPreconditionFailedException();
}
}
catch (Exception ex)
{
WebDavServer.Log.Warn(ex.Message);
throw;
}
/***************************************************************************************************
* Lock the file or folder
***************************************************************************************************/
// Get the parent collection of the item
IWebDavStoreCollection collection = GetParentCollection(store, context, context.Request.Url);
WebDavLockScope lockscope = (lockscopeNode.InnerXml.StartsWith("<D:exclusive"))
? WebDavLockScope.Exclusive
: WebDavLockScope.Shared;
//Only lock available at this time is a Write Lock according to RFC
WebDavLockType locktype = (locktypeNode.InnerXml.StartsWith("<D:write")) ? WebDavLockType.Write : WebDavLockType.Write;
string lockuser = ownerNode.InnerText;
WindowsIdentity Identity = (WindowsIdentity)Thread.GetData(Thread.GetNamedDataSlot(Constants.HttpUser));
lockResult = WebDavStoreItemLock.Lock(context.Request.Url, lockscope, locktype, Identity.Name, ref timeout,
out locktoken, requestDocument, depth);
// Get the item from the collection
try
{
GetItemFromCollection(collection, context.Request.Url);
}
catch (Exception)
{
lockResult = (int)HttpStatusCode.Created;
}
#endregion
}
else
{
#region Refreshing a lock
//Refresh lock will ref us back the original XML document which was used to request this lock, from
//this we will grab the data we need to build the response to the lock refresh request.
lockResult = WebDavStoreItemLock.RefreshLock(context.Request.Url, locktoken, ref timeout, out requestDocument);
if (requestDocument == null)
{
context.SetStatusCode(409);
return;
}
try
{
if (requestDocument.DocumentElement != null &&
requestDocument.DocumentElement.LocalName != "prop" &&
requestDocument.DocumentElement.LocalName != "lockinfo")
{
WebDavServer.Log.Debug("LOCK method without prop or lockinfo element in xml document");
}
manager = new XmlNamespaceManager(requestDocument.NameTable);
manager.AddNamespace("D", "DAV:");
manager.AddNamespace("Office", "schemas-microsoft-com:office:office");
manager.AddNamespace("Repl", "http://schemas.microsoft.com/repl/");
manager.AddNamespace("Z", "urn:schemas-microsoft-com:");
// Get the lockscope, locktype and owner as XmlNodes from the XML document
lockscopeNode = requestDocument.DocumentElement.SelectSingleNode("D:lockscope", manager);
locktypeNode = requestDocument.DocumentElement.SelectSingleNode("D:locktype", manager);
ownerNode = requestDocument.DocumentElement.SelectSingleNode("D:owner", manager);
}
catch (Exception ex)
{
WebDavServer.Log.Warn(ex.Message);
throw;
}
#endregion
}
/***************************************************************************************************
* Create the body for the response
***************************************************************************************************/
// Create the basic response XmlDocument
XmlDocument responseDoc = new XmlDocument();
const string responseXml = "<?xml version=\"1.0\" encoding=\"utf-8\" ?><D:prop xmlns:D=\"DAV:\"><D:lockdiscovery><D:activelock/></D:lockdiscovery></D:prop>";
responseDoc.LoadXml(responseXml);
// Select the activelock XmlNode
XmlNode activelock = responseDoc.DocumentElement.SelectSingleNode("D:lockdiscovery/D:activelock", manager);
// Import the given nodes
activelock.AppendChild(responseDoc.ImportNode(lockscopeNode, true));
activelock.AppendChild(responseDoc.ImportNode(locktypeNode, true));
activelock.AppendChild(responseDoc.ImportNode(ownerNode, true));
// Add the additional elements, e.g. the header elements
// The timeout element
WebDavProperty timeoutProperty = new WebDavProperty("timeout", timeout);// timeout);
activelock.AppendChild(timeoutProperty.ToXmlElement(responseDoc));
// The depth element
WebDavProperty depthProperty = new WebDavProperty("depth", (depth == 0 ? "0" : "Infinity"));
activelock.AppendChild(depthProperty.ToXmlElement(responseDoc));
// The locktoken element
WebDavProperty locktokenProperty = new WebDavProperty("locktoken", string.Empty);
XmlElement locktokenElement = locktokenProperty.ToXmlElement(responseDoc);
WebDavProperty hrefProperty = new WebDavProperty("href", locktoken);//"opaquelocktoken:e71d4fae-5dec-22df-fea5-00a0c93bd5eb1");
locktokenElement.AppendChild(hrefProperty.ToXmlElement(responseDoc));
activelock.AppendChild(locktokenElement);
/***************************************************************************************************
* Send the response
***************************************************************************************************/
// convert the StringBuilder
string resp = responseDoc.InnerXml;
byte[] responseBytes = Encoding.UTF8.GetBytes(resp);
context.SetStatusCode(lockResult);
context.Response.StatusDescription = HttpWorkerRequest.GetStatusDescription(lockResult);
// set the headers of the response
context.Response.ContentLength64 = responseBytes.Length;
context.Response.AppendHeader("ContentType", "text/xml");
// the body
context.Response.OutputStream.Write(responseBytes, 0, responseBytes.Length);
}