public HttpRequest(RawRequest request)
: base(request)
{
type = HttpRequestType.HttpPage;
Requests = new Dictionary<string, string>();
UrlParameters = new Dictionary<string, string>();
}
public ApplicationRequest(RawRequest request)
{
this.rawrequest = request;
}
/// <summary>
/// This function check if the RawRequest be received from the browser is well formed.
/// </summary>
/// <param name="e"></param>
/// <param name="req"></param>
/// <returns></returns>
public static bool TryValidate(RawRequest e, out HttpRequest req)
{
HttpRequestType request = HttpRequestType.HttpPage;
try
{
///
/// There are a lot of tecnique to extract the information in an http browser request,
/// this solutions split the request string and analize each blocks.
///
req = new HttpRequest(e);
///
///Decode the bytes in Utf8 chars and Split the string request by "\r\n"
///
req.CompleteRequest = new String(Encoding.UTF8.GetChars(e.RawData));
string[] groups = req.CompleteRequest.Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < groups.Length; i++)
{
string headerblock = groups[i];
if (i > 0 && headerblock.Contains(":"))
{
//From the second block we have fileds with the pattern <name:value>
string[] block = headerblock.Split(new string[] { ":" }, StringSplitOptions.RemoveEmptyEntries);
req.Requests.Add(block[0], block[1]);
}
else
{
///
/// The first block always include the request path ,the method and the protocol http.
/// ex. GET /path/resource.ext HTTP/1.1
///
string[] subparts = headerblock.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
//copy the path
req.CompletePath = subparts[1];
if (subparts[0] == "GET") req.Method = HttpMethodType.Get;
if (subparts[0] == "POST") req.Method = HttpMethodType.Post;
if (!String.IsNullOrEmpty(subparts[1]))
{
//split the path in "directories"
string[] resourcePaths = subparts[1].Split(new string[] { "/" }, StringSplitOptions.RemoveEmptyEntries);
if (resourcePaths.Length > 0)
{
///
/// We make a distinction between HttpStaticRequest and HttpPage
///
string resourceFullName = resourcePaths[resourcePaths.Length - 1];
if (HttpHelper.IsStaticResource(resourceFullName))
{
request = HttpRequestType.HttpStaticRequest;
}
}
}
else throw new InvalidOperationException("Invalid Request : " + req.CompleteRequest);
///
/// separate the request path from possibly query-url
///
string[] subPaths = subparts[1].Split(new string[] { "?" }, StringSplitOptions.RemoveEmptyEntries);
req.Path = subPaths[0];
req.Paths = subPaths[0].Split(new string[] { "/" }, StringSplitOptions.RemoveEmptyEntries).ToList();
}
}
//Save the query url parts in a dictionary : req.UrlParameters
string[] queryparams = HttpHelper.GetUrlQueries(HttpHelper.RemoveToken(req.CompletePath));
foreach (string p in queryparams)
{
string[] query = p.Split(new String[] { "=" }, StringSplitOptions.RemoveEmptyEntries);
if (query.Length == 2)
{
req.UrlParameters.Add(query[0], query[1]);
}
}
}
catch (Exception)
{
//If somethig goes wrong the validation return false.
req = null;
return false;
}
req.Type = request;
return true;
}
