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root / trunk / Pithos.Client.WPF / Preferences / LoginView.xaml.cs @ 7964bdc9

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´╗┐using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Net;
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using System.Net.Http;
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using System.Reflection;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Data;
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using System.Windows.Documents;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using System.Windows.Shapes;
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using Caliburn.Micro;
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using Pithos.Client.WPF.Properties;
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namespace Pithos.Client.WPF.Preferences
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{
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    /// <summary>
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    /// Interaction logic for LoginView.xaml
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    /// </summary>
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    public partial class LoginView : Window,INotifyPropertyChanged
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    {
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        private static readonly log4net.ILog Log = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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        private Uri _uri;
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        private Uri _logoutUri;
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        private bool _loggingOut;
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        public Uri Uri
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        {
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            get
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            {
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                return _uri;
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            }
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            set
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            {
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                _uri = value;
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                RaisePropertyChanged(() => Uri);
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            }
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        }
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        private void RaisePropertyChanged(Expression<Func<Uri>> property)
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        {
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            if (PropertyChanged != null)
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            {
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                PropertyChanged(this, new PropertyChangedEventArgs(property.GetMemberInfo().Name));
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            }
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        }
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        public LoginView(Uri loginUri, Uri logoutUri, string account = null)
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        {
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            InitializeComponent();
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            if (String.IsNullOrWhiteSpace(account))
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                this.Title = "Retrieve Pithos credentials";
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            else
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                this.Title = "Retrieve Pithos credentials for " + account;
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            Uri = loginUri;
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            _logoutUri = logoutUri;
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            _loggingOut = true;
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            //GetPage(loginUri);
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            LoginBrowser.Navigate("javascript:void((function(){var a,b,c,e,f;f=0;a=document.cookie.split('; ');for(e=0;e<a.length&&a[e];e++){f++;for(b='.'+location.host;b;b=b.replace(/^(?:%5C.|[^%5C.]+)/,'')){for(c=location.pathname;c;c=c.replace(/.$/,'')){document.cookie=(a[e]+'; domain='+b+'; path='+c+'; expires='+new Date((new Date()).getTime()-1e11).toGMTString());}}}})())");
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            LoginBrowser.Navigate(logoutUri ?? loginUri);
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        }
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        private async void GetPage(Uri url)
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        {
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            IsBusy.BusyContent = "Opening login screen";
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            IsBusy.IsBusy = true;
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            LoginBrowser.Visibility = Visibility.Hidden;
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            var AstakosCookie = new CookieContainer();
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            //using (var handler = new HttpClientHandler() { 
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              //  CookieContainer = AstakosCookie, 
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                //AllowAutoRedirect = true, 
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                //AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip, 
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                //UseCookies = false 
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            //}) ;
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            var client = new HttpClient(new HttpClientHandler
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                {
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                    CookieContainer = AstakosCookie,
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                    AllowAutoRedirect=true,
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                    AutomaticDecompression=DecompressionMethods.Deflate|DecompressionMethods.GZip,
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                    UseCookies=false
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                });
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            AstakosCookie.SetCookies(url, "sessionid=");
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            AstakosCookie.SetCookies(url, "Expires=Thu, 01-Jan-1970 00:00:01 GMT;");
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            using (var response = await client.GetAsync(url))
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            {
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                var requestUri = response.RequestMessage.RequestUri;
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                var baseUri = new UriBuilder(requestUri.Scheme, requestUri.DnsSafeHost);
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                var page = await response.Content.ReadAsStringAsync();
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                var headIndex = page.IndexOf("<head>");
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                var finalPage = String.Concat(page.Substring(0, headIndex + 6),
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                                String.Format("\n<base href='{0}' >\n", baseUri),
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                                page.Substring(headIndex + 6));
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                LoginBrowser.NavigateToString(finalPage);
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                IsBusy.IsBusy = false;
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                LoginBrowser.Visibility = Visibility.Visible;
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            }
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        }
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        public string Token { get; set; }
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        public string Account { get; set; }
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        private void LoginBrowser_Navigating(object sender, System.Windows.Navigation.NavigatingCancelEventArgs e)
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        {
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            IsBusy.BusyContent = "Please Wait";
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            IsBusy.IsBusy = true;
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            LoginBrowser.Visibility=Visibility.Hidden;
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            if (Log.IsDebugEnabled)
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                Log.Debug(e.ToString());
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/*
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            if (e.Uri == null)
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                return;
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*/
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            if (e.Uri.Scheme == "pithos")
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            {
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                Log.DebugFormat("Authentication response [{0}]",e.Uri);
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                e.Cancel = true;
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                var response = ParseResponse(e.Uri.Query);
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                Account = response["user"];
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                Token = response["token"];
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                Log.InfoFormat("Token received for [{0}]", Account);
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                DialogResult = true;
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                this.Close();
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            }
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        }
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        private static Dictionary<string, string> ParseResponse(string request)
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        {
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            //var parts = request.Split(' ');
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            var query = request.TrimStart('?');
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            var items = query.Split('&')
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                .Select(pair => pair.Split('='))
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                .ToDictionary(arr => arr[0].ToLower(), arr => Uri.UnescapeDataString(arr[1]));
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            return items;
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        }
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        public event PropertyChangedEventHandler PropertyChanged;
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        private void Retry_Click(object sender, RoutedEventArgs e)
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        {
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            LoginBrowser.Navigate(Uri);
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        }
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        private void LoginBrowser_Navigated(object sender, System.Windows.Navigation.NavigationEventArgs e)
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        {
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            if (_loggingOut)
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            {
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                _loggingOut = false;
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                IsBusy.BusyContent = "Opening login screen";
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                LoginBrowser.Navigate(Uri);
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            }
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            else
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            {
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                IsBusy.IsBusy = false;
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                LoginBrowser.Visibility = Visibility.Visible;
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            }
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        }
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    }
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}