// determins the request type passed in the given XML document
public string DetermineRequestType(string path, out int UploadDownloadPrint, out string[] chatInfo)
{
int b = 0;
string scopeVal = "";
bool flag = false;
string[] st = new string[3];
try
{
// load the XML document
MSXML2.IXMLDOMDocument document = new MSXML2.DOMDocument();
if (!document.load(path))
{
throw new Exception("XML request found corrupted.");
}
// retrieve the request element
MSXML2.IXMLDOMElement element = document.documentElement;
MSXML2.IXMLDOMNode node = element.firstChild;
MSXML2.IXMLDOMNamedNodeMap nodemap = node.attributes;
// retrieve it's attributes
MSXML2.IXMLDOMNode childNode = nodemap.nextNode();
if (0 == node.nodeName.CompareTo("request"))
{
// see what value does the element tequest holds
// and react apprpriately
switch (childNode.nodeValue.ToString())
{
case "CHAT":
{
b = 4;
MSXML2.IXMLDOMNode scope = node.firstChild;
MSXML2.IXMLDOMNamedNodeMap nodemap2 = scope.attributes;
MSXML2.IXMLDOMNode childNode2 = nodemap2.nextNode();
MSXML2.IXMLDOMNode childNode3 = nodemap2.nextNode();
MSXML2.IXMLDOMNode childNode4 = nodemap2.nextNode();
// set file name to upload to "path" parameter
st.Initialize();
st.SetValue(childNode2.nodeValue.ToString(), 0);
st.SetValue(childNode3.nodeValue.ToString(), 1);
st.SetValue(childNode4.nodeValue.ToString(), 2);
break;
}
case "SEARCH":
{
WriteSearchResponse(node);
break;
}
case "SHOWFILES":
{
WriteShowfileResponse("SHOWFILES");
break;
}
case "DOWNLOAD":
{
// set flag that its download request
b = 2;
flag = true;
break;
}
case "UPLOAD":
{
// set flag that its upload request
b = 1;
flag = true;
break;
}
case "PRINT":
{
// set flag that its print request
b = 3;
flag = true;
break;
}
case "STREAMING":
{
// set flag that its Streaming request
b = 5;
flag = true;
break;
}
default:
throw new Exception("Request type could not be resolved.");
}
if (flag)
{
MSXML2.IXMLDOMNode scope = node.firstChild;
MSXML2.IXMLDOMNamedNodeMap nodemap2 = scope.attributes;
MSXML2.IXMLDOMNode childNode2 = nodemap2.nextNode();
// set file name to upload to "path" parameter
scopeVal = childNode2.nodeValue.ToString();
}
}
}
catch (Exception e)
{
WriteErrorResponse(e.Message);
}
chatInfo = st;
UploadDownloadPrint = b;
return(scopeVal);
}
/// <summary>
/// Actual Parsing of ERROR XML
/// </summary>
/// <param name="Filename"> </param>
/// <param name="outStruct"> </param>
protected int ParseERRORXML(string Filename, out XMLSTRUCT outStruct)
{
// initializes all the required variables
InitVariables();
// Initialize outStruct variable of this function
outStruct = new XMLSTRUCT();
// Process the XML document syncronously
document.async = false;
// load the xml document in memory for parsing
if (document.load(Filename))
{
// get the first element of the XML
element = document.documentElement;
// get the first child of the element
node = element.firstChild;
// extracts the node list present under the node
nodeList = node.childNodes;
// iTags will assigns to the number of nodes present
// in node list
iTags = nodeList.length;
// Initialize the ERROR sructure of the outStruct
// variable
outStruct.ERROR = new XMLSTRUCT.__ERROR();
// move the node to the next node of the nodelist
node = nodeList.nextNode();
// Extract each value from its specific node
for (iCounter = 0; iCounter < iTags; iCounter++)
{
// gets the attribute map that is how many attributes
// are present in the node
nodeMap = node.attributes;
// extract the next node from the node map
ChildNode = nodeMap.nextNode();
// The following 9 lines of code will extract the
// various attribute values from the XML node
// and fills it to the outStruct's corresponding
// structure
do
{
if (0 == ChildNode.nodeName.CompareTo("errorcode"))
{
outStruct.ERROR.iErrCode = Convert.ToInt32(ChildNode.nodeValue);
}
else if (0 == ChildNode.nodeName.CompareTo("severity"))
{
outStruct.ERROR.sSeverity = ChildNode.nodeValue.ToString();
}
else if (0 == ChildNode.nodeName.CompareTo("description"))
{
outStruct.ERROR.sDescription = ChildNode.nodeValue.ToString();
}
} while(null != (ChildNode = nodeMap.nextNode()));
// now move to next node
node = nodeList.nextNode();
}
}
// Return the number of nodes parsed for the values
return(iCounter == iTags?iCounter:0);
}
// responds for search requests
private void WriteSearchResponse(MSXML2.IXMLDOMNode node)
{
try
{
MSXML2.IXMLDOMNode scope = node.firstChild;
MSXML2.IXMLDOMNamedNodeMap nodemap = scope.attributes;
MSXML2.IXMLDOMNode childNode = nodemap.nextNode();
MSXML2.IXMLDOMNode childNode2 = nodemap.nextNode();
string scopeVal = childNode.nodeValue.ToString();
string maskVal = childNode2.nodeValue.ToString();
// make sure that search request has criteria specified in it
if (0 != scope.nodeName.CompareTo("scope"))
{
return;
}
// validated that directory's existing
if (!Directory.Exists(scopeVal.Substring(0, scopeVal.LastIndexOf("\\") + 1)))
{
throw new Exception("Directory does not exists any more");
}
MSXML2.IXMLDOMDocument document = CreateDocument();
MSXML2.IXMLDOMElement responseElem = document.createElement("response");
responseElem.setAttribute("type", "SHOWFILES");
int i = 0;
// get files in the specified directory satisfying the
// given criteria
string[] files = Directory.GetFiles(scopeVal.Substring(0, scopeVal.LastIndexOf("\\") + 1), scopeVal.Substring(scopeVal.LastIndexOf("\\") + 1));
files.Initialize();
while (i < files.Length)
{
// make fileinfo elements and fill then up with
// required
MSXML2.IXMLDOMElement file_infoElem = document.createElement("fileinfo");
file_infoElem.setAttribute("filename", files[i]);
file_infoElem.setAttribute("mask", maskVal);
file_infoElem.setAttribute("filesize", Convert.ToString(new FileInfo(files[i]).Length));
++i;
// add them to response element as children;
responseElem.appendChild(file_infoElem);
}
// get files in the specified directory satisfying the
// given criteria
string[] dirs = Directory.GetDirectories(scopeVal.Substring(0, scopeVal.LastIndexOf("\\") + 1), scopeVal.Substring(scopeVal.LastIndexOf("\\") + 1));
dirs.Initialize();
i = 0;
while (i < dirs.Length)
{
// make fileinfo elements and fill then up with
// required
MSXML2.IXMLDOMElement file_infoElem = document.createElement("fileinfo");
file_infoElem.setAttribute("filename", dirs[i] + "\\");
file_infoElem.setAttribute("mask", maskVal);
++i;
// add them to response element as children;
responseElem.appendChild(file_infoElem);
}
// close and save the document
SaveAndCloseDocument(responseElem, document);
}
catch (Exception e) { WriteErrorResponse(e.Message); }
}
