using System;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Web.Services.Protocols;
using System.Xml;

public class AtomClient {
  public static void Main(string[] arg) {
    if (arg.Length != 3) {
      Console.WriteLine("Usage: AtomClient user password url");
      return;
    }

    string user = arg[0];
    string password = arg[1];
    string url = arg[2];

    // Create a blog entry
    entryType blog = new entryType();
    blog.issued = DateTime.Now;
    blog.title = "First Post!";

    // Author
    blog.author = new authorType();
    blog.author.name = "Sam Ruby";
    blog.author.url = "http://www.intertwingly.net/blog/";
    
    // Generator
    blog.generator = new generatorType();
    blog.generator.url = "http://www.intertwingly.net/blog/";
    blog.generator.Value = "WSDL C# Client";

    // Fill in the content
    XmlDocument d = new XmlDocument();
    d.InnerXml = "<div xmlns='http://www.w3.org/1999/xhtml'>Hello World!</div>";
    blog.content = new contentType[1];
    blog.content[0] = new contentType();
    blog.content[0].mode = contentTypeMode.xml;
    blog.content[0].type = "application/xhtml+xml";
    blog.content[0].Any = new XmlNode[1];
    blog.content[0].Any[0] = d.DocumentElement;

    // Create an 'atom' authorization header 
    Security auth = new Security();
    UsernameToken unt = new UsernameToken();
    auth.UsernameToken = new UsernameToken();
    auth.UsernameToken.Nonce = new Random().Next().ToString();
    auth.UsernameToken.Username=user;
    auth.UsernameToken.Created=DateTime.Now.ToString("u").Replace(' ','T');
   
    // Fill in the password
    SHA1 md = new SHA1CryptoServiceProvider();
    string v = auth.UsernameToken.Nonce + auth.UsernameToken.Created + password;
    byte[] digest = md.ComputeHash(Encoding.Default.GetBytes(v));
    auth.UsernameToken.Password=new passwordType();
    auth.UsernameToken.Password.Value=Convert.ToBase64String(digest);
    auth.UsernameToken.Password.Type="wsse:PasswordDigest";
    auth.UsernameToken.Password.AnyAttr=new XmlAttribute[1];
    auth.UsernameToken.Password.AnyAttr[0]=d.CreateAttribute("wsse:placeholder",
       "http://schemas.xmlsoap.org/ws/2002/07/secext");
   
    try {
      // Post the request
      AtomAPI api = new AtomAPI();
      api.SecurityValue = auth;
      api.Url = url;
      api.POST(ref blog);
    } catch (SoapException fault) {
      System.Console.WriteLine(fault.Message);
    } catch (WebException httpStatus) {
      System.Console.WriteLine(httpStatus.Message);
    }

  }
}