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|
#region License GNU GPL
// VoteModelView.cs
//
// Copyright (C) 2013 - BehaviorIsManaged
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free Software Foundation;
// either version 2 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along with this program;
// if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#endregion
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Web;
using System.Drawing;
using System.IO;
using System.Net;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Controls;
using System.Windows.Forms;
using System.Windows.Forms.Integration;
using System.Windows.Media.Imaging;
using Uplauncher.Properties;
using WebBrowser = System.Windows.Forms.WebBrowser;
namespace Uplauncher
{
public class VoteModelView : INotifyPropertyChanged
{
private int m_reloadTries;
private WebBrowser m_webBrowser;
private DelegateCommand m_reloadCommand;
private WebBrowserDocumentCompletedEventHandler m_onLoaded;
private DelegateCommand m_voteCommand;
public VoteModelView(string url, int siteID)
{
RawURL = url;
SiteID = siteID;
AskingCredentials = true;
}
public string RawURL
{
get;
set;
}
public string CompleteURL
{
get { return string.Format(RawURL, SiteID); }
}
public int SiteID
{
get;
set;
}
public BitmapImage Captcha
{
get;
set;
}
public string CaptchaString
{
get;
set;
}
public string ChallengeField
{
get;
set;
}
public string SessionId
{
get;
set;
}
public string Username
{
get;
set;
}
public string Password
{
get;
set;
}
public bool AskingCredentials
{
get;
set;
}
public bool NotAskingCredentials
{
get { return !AskingCredentials; }
}
public bool AreCredentialsValid
{
get;
private set;
}
public bool WrongCredentials
{
get;
private set;
}
public bool IsVoting
{
get;
set;
}
public bool? DialogResult
{
get;
set;
}
public DelegateCommand ReloadCommand
{
get
{
return m_reloadCommand ?? ( m_reloadCommand = new DelegateCommand(Reload, () => !IsVoting) );
}
}
public DelegateCommand VoteCommand
{
get
{
return m_voteCommand ?? ( m_voteCommand = new DelegateCommand(Vote, () => !IsVoting) );
}
}
#region LoginCommand
private DelegateCommand m_loginCommand;
public DelegateCommand LoginCommand
{
get { return m_loginCommand ?? (m_loginCommand = new DelegateCommand(OnLogin, CanLogin)); }
}
private bool CanLogin(object parameter)
{
return AskingCredentials && parameter is PasswordBox &&
!string.IsNullOrEmpty((parameter as PasswordBox).Password) && !string.IsNullOrEmpty(Username);
}
private void OnLogin(object parameter)
{
if (parameter == null || !CanLogin(parameter))
return;
Password = ( parameter as PasswordBox ).Password;
try
{
var client = new WebClient();
var output = client.DownloadString(string.Format(Constants.APILoginURL, Username, Password, 0));
var result = bool.Parse(output);
if (!result)
{
WrongCredentials = true;
}
else
{
AskingCredentials = false;
AreCredentialsValid = true;
}
}
catch (WebException)
{
MessageBox.Show(Resources.Unreached_Server, Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
DialogResult = false;
}
}
#endregion
public void Vote()
{
if (string.IsNullOrEmpty(CaptchaString))
{
MessageBox.Show(Resources.Empty_Captcha, Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
IsVoting = true;
ReloadCommand.RaiseCanExecuteChanged();
VoteCommand.RaiseCanExecuteChanged();
HtmlElement input = null;
HtmlElement button = null;
foreach (HtmlElement element in m_webBrowser.Document.GetElementsByTagName("input"))
{
if (element.GetAttribute("value") == "Voter")
{
button = element;
}
if (element.GetAttribute("name") == "recaptcha_response_field")
{
input = element;
}
}
// errors
m_webBrowser.Navigating += OnNavigating;
m_webBrowser.DocumentCompleted += OnVoteCompleted;
input.InnerText = CaptchaString;
button.InvokeMember("click");
}
private void OnNavigating(object sender, WebBrowserNavigatingEventArgs e)
{
}
private void OnVoteCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
m_webBrowser.DocumentCompleted -= OnVoteCompleted;
if (m_webBrowser.Document == null)
{
MessageBox.Show(Resources.Unknown_Vote_Error, Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
else
{
if (!m_webBrowser.Document.Cookie.Contains(" parasubmitvote2"))
{
MessageBox.Show(Resources.Vote_Refused_Error, Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
DialogResult = false;
}
else
{
var client = new WebClient();
var output = client.DownloadString(string.Format(Constants.APILoginURL, Username, Password, 1));
if (string.IsNullOrEmpty(output))
{
MessageBox.Show(Resources.Unreached_Server, Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
DialogResult = false;
}
int minutesUntilNextVote;
if (int.TryParse(output, out minutesUntilNextVote))
{
MessageBox.Show(string.Format(Resources.Already_Voted, minutesUntilNextVote), Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
DialogResult = false;
}
else
{
var result = bool.Parse(output);
DialogResult = result;
}
}
}
}
public void Reload()
{
m_webBrowser = new WebBrowser();
// c'est ici que j'aimerai suprimmer les cookies.
m_webBrowser.Navigate(CompleteURL);
m_webBrowser.DocumentCompleted += m_onLoaded = (e, s) => OnReloaded();
m_webBrowser.ScriptErrorsSuppressed = true;
m_webBrowser.AllowWebBrowserDrop = false;
}
private void OnReloaded()
{
try
{
m_webBrowser.DocumentCompleted -= m_onLoaded;
if (m_webBrowser.Document == null)
throw new Exception(string.Format("Cannot reach {0}", CompleteURL));
var element = m_webBrowser.Document.GetElementById("recaptcha_challenge_field");
if (element == null)
throw new Exception("Element with id 'recaptcha_challenge_field' not found in source. Check URL");
ChallengeField = element.GetAttribute("value");
if (string.IsNullOrEmpty(ChallengeField))
throw new Exception("'recaptcha_challenge_field' has no value attribute or is empty");
var imageElement = m_webBrowser.Document.GetElementById("recaptcha_image");
if (imageElement == null)
throw new Exception("Element with id 'recaptcha_image' not found in source. Check URL");
if (imageElement.FirstChild == null || !imageElement.FirstChild.TagName.Equals("img", StringComparison.OrdinalIgnoreCase))
throw new Exception("Element 'recaptcha_image' first child is not an <img>");
var captchaURL = imageElement.FirstChild.GetAttribute("src");
if (string.IsNullOrEmpty(captchaURL))
throw new Exception("Captcha image url is null or empty in element 'recaptcha_image'");
Captcha = new BitmapImage(new Uri(captchaURL));
if (Captcha == null)
throw new Exception(string.Format("Cannot retrieve captcha image URL={0}", captchaURL));
foreach (string cookie in m_webBrowser.Document.Cookie.Trim().Split(';'))
{
if (string.IsNullOrEmpty(cookie))
continue;
string name = cookie.Split('=')[0];
string value = cookie.Substring(name.Length + 1).Trim();
if (name.Trim() == "PHPSESSID")
SessionId = value;
}
}
catch (Exception ex)
{
m_reloadTries++;
if (m_reloadTries > 5)
{
MessageBox.Show(string.Format(Resources.Error_OnLoading, ex), Resources.Error, MessageBoxButtons.OK, MessageBoxIcon.Error);
DialogResult = false;
}
else
{
Reload();
}
}
}
public event PropertyChangedEventHandler PropertyChanged;
}
} |
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