// This function converts a string representation
// of hexadecimal bytes into a byte array
public static byte[] ConvertHexToBytes(string hexString)
{
int numChars = hexString.Length;
byte[] byteArray = null;
if (numChars > 0)
{
try
{
byteArray = new byte[numChars / 2];
for (int i = 0; i < numChars; i += 2)
{
byteArray[i / 2] = Convert.ToByte(hexString.Substring(i, 2), 16);
}
}
catch (Exception ex)
{
ASError.ReportException(ex);
return(null);
}
}
return(byteArray);
}
// This function sends the OPTIONS request and returns an
// ASOptionsResponse class that represents the response.
public ASOptionsResponse GetOptions()
{
if (credential == null || server == null)
{
throw new InvalidDataException("ASOptionsRequest not initialized.");
}
string uriString = string.Format("{0}//{1}/Microsoft-Server-ActiveSync", UseSSL ? "https:" : "http:", Server);
Uri serverUri = new Uri(uriString);
CredentialCache creds = new CredentialCache();
// Using Basic authentication
creds.Add(serverUri, "Basic", Credentials);
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(uriString);
httpReq.Credentials = creds;
httpReq.Method = "OPTIONS";
try
{
HttpWebResponse httpResp = (HttpWebResponse)httpReq.GetResponse();
ASOptionsResponse response = new ASOptionsResponse(httpResp);
httpResp.Close();
return(response);
}
catch (Exception ex)
{
ASError.ReportException(ex);
return(null);
}
}
// This function sends the request and returns
// the response.
public ASCommandResponse GetResponse()
{
GenerateXMLPayload();
if (Credentials == null || Server == null || ProtocolVersion == null || WbxmlBytes == null)
{
throw new InvalidDataException("ASCommandRequest not initialized.");
}
// Generate the URI for the request
string uriString = string.Format("{0}//{1}/Microsoft-Server-ActiveSync?{2}",
useSSL ? "https:" : "http:", server, RequestLine);
Uri serverUri = new Uri(uriString);
CredentialCache creds = new CredentialCache();
// Using Basic authentication
creds.Add(serverUri, "Basic", credential);
HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(uriString);
httpReq.Credentials = creds;
httpReq.Method = "POST";
// MS-ASHTTP section 2.2.1.1.2.2
httpReq.ContentType = "application/vnd.ms-sync.wbxml";
if (!UseEncodedRequestLine)
{
// Encoded request lines include the protocol version
// and policy key in the request line.
// Non-encoded request lines require that those
// values be passed as headers.
httpReq.Headers.Add("MS-ASProtocolVersion", ProtocolVersion);
httpReq.Headers.Add("X-MS-PolicyKey", PolicyKey.ToString());
}
try
{
Stream requestStream = httpReq.GetRequestStream();
requestStream.Write(WbxmlBytes, 0, WbxmlBytes.Length);
requestStream.Close();
HttpWebResponse httpResp = (HttpWebResponse)httpReq.GetResponse();
ASCommandResponse response = WrapHttpResponse(httpResp);
httpResp.Close();
return(response);
}
catch (Exception ex)
{
ASError.ReportException(ex);
return(null);
}
}
// This function moves local storage to a new directory.
public void MoveLocalFolder(string destination)
{
try
{
Directory.Move(saveLocation, destination);
}
catch (Exception e)
{
ASError.ReportException(e);
}
saveLocation = destination;
}
// This function uses the ASWBXML class to encode
// XML into a WBXML stream.
private byte[] EncodeXMLString(string xmlString)
{
try
{
ASWBXML encoder = new ASWBXML();
encoder.LoadXml(xmlString);
return(encoder.GetBytes());
}
catch (Exception ex)
{
ASError.ReportException(ex);
return(null);
}
}
// This function uses the ASWBXML class to decode
// a WBXML stream into XML.
private string DecodeWBXML(byte[] wbxml)
{
try
{
ASWBXML decoder = new ASWBXML();
decoder.LoadBytes(wbxml);
return(decoder.GetXml());
}
catch (Exception ex)
{
ASError.ReportException(ex);
return("");
}
}
