WsseAtomConnection.cs

using System;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Xml.Linq;

namespace Azyobuzi.HatenaDiaryClient.Models.Hatena
{
    public static class WsseAtomConnection
    {
        private static Random random = new Random();

        private static string CreateHeader(string userName, string password)
        {
            var tmp = new byte[25];
            random.NextBytes(tmp);
            var nonce = Convert.ToBase64String(tmp);
            tmp = null;
            var created = DateTime.Now.ToUniversalTime().ToString("o");
            var digest = Convert.ToBase64String(
                new SHA1Managed().ComputeHash(
                    Encoding.ASCII.GetBytes(nonce + created + password)
                ));
            return string.Format(
                @"X-WSSE:UsernameToken Username=""{0}"", PasswordDigest=""{1}"", Nonce=""{2}"", Created=""{3}""",
                userName, digest, nonce, created);
        }

        public static XDocument Get(string reqUri, string userName, string password)
        {
            using (var wc = new WebClient())
            {
                wc.Headers.Add(CreateHeader(userName, password));
                using (var stream = wc.OpenRead(reqUri))
                    return XDocument.Load(stream);
            }
        }

        public static void Delete(string reqUri, string userName, string password)
        {
            var req = WebRequest.Create(reqUri);
            req.Method = "DELETE";
            req.Headers.Add(CreateHeader(userName, password));
            req.GetResponse().Close();
        }

        private static XDocument PostOrPut(string reqUri, string method, XDocument reqData, string userName, string password)
        {
            var req = WebRequest.Create(reqUri);
            req.Method = method;
            req.Headers.Add(CreateHeader(userName, password));
            req.ContentType = "application/x.atom+xml";
            var bs = Encoding.UTF8.GetBytes(reqData.ToString());
            req.ContentLength = bs.Length;
            using (var stream = req.GetRequestStream())
                stream.Write(bs, 0, bs.Length);
            using (var res = req.GetResponse())
                return XDocument.Load(res.GetResponseStream());
        }

        public static XDocument Post(string reqUri, XDocument reqData, string userName, string password)
        {
            return PostOrPut(reqUri, "POST", reqData, userName, password);
        }

        public static XDocument Put(string reqUri, XDocument reqData, string userName, string password)
        {
            return PostOrPut(reqUri, "PUT", reqData, userName, password);
        }
    }
}