/// <summary>
/// Validates the specified Sword request.
/// </summary>
/// <param name="context">An instance of HttpContext containing the request details.</param>
/// <param name="errorMessage">An error message describing the reason if validation is failed.</param>
/// <returns>True if the request is valid, otherwise false.</returns>
public bool ValidateRequest(HttpContext context, out string errorMessage)
{
string httpRequestType = context.Request.RequestType.ToUpperInvariant();
// Verify request type is GET, PUT, POST, DELETE
if (!(PlatformConstants.GetRequestType == httpRequestType ||
PlatformConstants.PutRequestType == httpRequestType ||
PlatformConstants.PostRequestType == httpRequestType ||
PlatformConstants.DeleteRequestType == httpRequestType))
{
errorMessage = Resources.ATOMPUB_INVALID_METHOD;
return(false);
}
Uri baseUri = new Uri(SwordHelper.GetBaseUri());
AtomPubRequestType requestType = AtomPubHelper.GetAtomPubRequestType(context, baseUri);
bool isValidRequest = AtomPubRequestType.Unknwon != requestType;
errorMessage = (isValidRequest) ? string.Empty : Resources.ATOMPUB_BAD_REQUEST;
return(isValidRequest);
}
/// <summary>
/// Initializes a new instance of the <see cref="SwordGetProcessor"/> class.
/// </summary>
public SwordGetProcessor()
: base(SwordHelper.GetBaseUri())
{
}
/// <summary>
/// Initializes a new instance of the <see cref="SwordPostProcessor"/> class.
/// </summary>
internal SwordPostProcessor()
: base(SwordHelper.GetBaseUri())
{
}
/// <summary>
/// Initializes a new instance of the <see cref="ZentitySwordStoreWriter"/> class.
/// </summary>
public ZentitySwordStoreWriter()
: base(SwordHelper.GetBaseUri())
{
}
/// <summary>
/// Processes the GET and POST requests sent to the Sword service.
/// </summary>
/// <param name="context">HttpContext object containing the request information.</param>
/// <param name="statusCode">Out parameter returns the status of the request.</param>
/// <returns>Response in string format.</returns>
public string ProcessRequest(HttpContext context, out System.Net.HttpStatusCode statusCode)
{
var unknownContentHeaders = context.Request.Headers.AllKeys
.Intersect(AtomPubHelper.UnknownContentHeaders);
if (0 < unknownContentHeaders.Count())
{
statusCode = HttpStatusCode.NotImplemented;
return(string.Format(CultureInfo.InvariantCulture,
Resources.ATOMPUB_UNKNOWN_CONTENT_HEADER,
unknownContentHeaders.First()));
}
HttpRequestProcessor processor = null;
switch (context.Request.RequestType)
{
case PlatformConstants.GetRequestType:
processor = new SwordGetProcessor();
break;
case PlatformConstants.PostRequestType:
processor = new SwordPostProcessor();
break;
case PlatformConstants.PutRequestType:
processor = new AtomPubPutProcessor(SwordHelper.GetBaseUri());
break;
case PlatformConstants.DeleteRequestType:
processor = new AtomPubDeleteProcessor(SwordHelper.GetBaseUri());
break;
default:
processor = null;
break;
}
if (null == processor)
{
statusCode = HttpStatusCode.NotImplemented;
return(Resources.SWORD_UNSUPPORTED_REQUEST_TYPE);
}
try
{
string responseString = string.Empty;
// Check if it is a valid request
if (processor.ValidateRequest(context, out responseString))
{
return(processor.ProcessRequest(context, out statusCode));
}
else
{
statusCode = HttpStatusCode.BadRequest;
return(responseString);
}
}
catch (UnauthorizedException ex)
{
statusCode = HttpStatusCode.Forbidden;
return(ex.Message);
}
}