[VB/C#] Twitter にログイン

2015/06/14DevelopmentTwitter

コードから Twitter にスクリーンネームまたはメールアドレスとパスワードで、Twitter API を使わず、直接ログインして、HTML ページをダウンロードします。

下記コードの Login でログインし、必要な Cookie を取得します。ログイン後、例としてアカウント設定の HTML を取得しています。

System.Net, System.IO, System.Text, System.Text.RegularExpressions を import してください。

Visual Basic (VB.NET)

	Sub Main()
	' ログインして Cookie 取得
	Dim cookies = Login("スクリーンネームまたはメールアドレス", "パスワード")

	' 取得した Cookie を付けてアカウント設定ページにアクセス
	Dim url = "https://twitter.com/settings/account"
	Dim req = WebRequest.CreateHttp(New Uri(url))
	req.CookieContainer = New CookieContainer
	req.CookieContainer.Add(cookies)

	Dim html As String
	Using res = req.GetResponse
	Using rs = res.GetResponseStream
	Using sr = New StreamReader(rs)
	html = sr.ReadToEnd
	End Using
	End Using
	End Using
	End Sub

	Private Function GetAuthenticityTokenAndCookies() As Tuple(Of String, CookieCollection)
	Dim req = WebRequest.CreateHttp("https://twitter.com/")
	req.Method = "GET"
	req.ServicePoint.Expect100Continue = False
	req.CookieContainer = New CookieContainer

	Using res = DirectCast(req.GetResponse, HttpWebResponse)
	Dim html As String
	Using rs = res.GetResponseStream
	Using sr = New IO.StreamReader(rs, Encoding.UTF8)
	html = sr.ReadToEnd
	End Using
	End Using

	html = html.Substring(html.IndexOf("action=""https://twitter.com/sessions"""))
	Dim m = Regex.Match(html, "value=""(?<token>.*?)""\s+name=""authenticity_token""")

	Return New Tuple(Of String, CookieCollection)(m.Groups("token").Value, res.Cookies)
	End Using
	End Function

	Private Function Login(name As String, password As String) As CookieCollection
	Dim val = GetAuthenticityTokenAndCookies()
	Dim token = val.Item1
	Dim cookies = val.Item2

	Dim param = String.Format("session%5Busername_or_email%5D={0}&session%5Bpassword%5D={1}&remember_me=0&return_to_ssl=true&scribe_log=&redirect_after_login=%2F&authenticity_token={2}", name, password, token)
	Dim buf = Text.Encoding.ASCII.GetBytes(param)

	Dim uri = New Uri("https://twitter.com/sessions")
	Dim req = WebRequest.CreateHttp(uri)
	req.Method = "POST"
	req.ContentType = "application/x-www-form-urlencoded"
	req.ContentLength = buf.Length
	req.Referer = "https://twitter.com/"
	req.ServicePoint.Expect100Continue = False
	req.CookieContainer = New CookieContainer
	If cookies IsNot Nothing Then
	req.CookieContainer.Add(cookies)
	End If

	Using rs = req.GetRequestStream
	rs.Write(buf, 0, buf.Length)
	End Using

	Dim html As String
	Using res = req.GetResponse
	Using rs = res.GetResponseStream
	Using sr = New StreamReader(rs, Encoding.UTF8)
	html = sr.ReadToEnd
	End Using
	End Using
	Return req.CookieContainer.GetCookies(uri)
	End Using
	End Function

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Module.vb

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C#

	static void Main(string[] args)
	{
	// ログインして Cookie 取得
	var cookies = Login("スクリーンネームまたはメールアドレス", "パスワード");

	// 取得した Cookie を付けてアカウント設定ページにアクセス
	var url = "https://twitter.com/settings/account";
	var req = WebRequest.CreateHttp(new Uri(url));
	req.CookieContainer = new CookieContainer();
	req.CookieContainer.Add(cookies);

	string html = null;
	using (var res = req.GetResponse())
	{
	using (var rs = res.GetResponseStream())
	{
	using (var sr = new StreamReader(rs))
	{
	html = sr.ReadToEnd();
	}
	}
	}
	}

	private static Tuple<string, CookieCollection> GetAuthenticityTokenAndCookies()
	{
	var req = WebRequest.CreateHttp("https://twitter.com/");
	req.Method = "GET";
	req.ServicePoint.Expect100Continue = false;
	req.CookieContainer = new CookieContainer();

	using (var res = req.GetResponse() as HttpWebResponse)
	{
	string html = null;
	using (var rs = res.GetResponseStream())
	{
	using (var sr = new StreamReader(rs, Encoding.UTF8))
	{
	html = sr.ReadToEnd();
	}
	}

	html = html.Substring(html.IndexOf("action=\"https://twitter.com/sessions\""));
	var m = Regex.Match(html, "value=\"(?<token>.*?)\"\\s+name=\"authenticity_token\"");

	return new Tuple<string, CookieCollection>(m.Groups["token"].Value, res.Cookies);
	}
	}

	private static CookieCollection Login(string name, string password)
	{
	var val = GetAuthenticityTokenAndCookies();
	var token = val.Item1;
	var cookies = val.Item2;

	var param = string.Format("session%5Busername_or_email%5D={0}&session%5Bpassword%5D={1}&remember_me=0&return_to_ssl=true&scribe_log=&redirect_after_login=%2F&authenticity_token={2}", name, password, token);
	var buf = System.Text.Encoding.ASCII.GetBytes(param);

	var uri = new Uri("https://twitter.com/sessions");
	var req = WebRequest.CreateHttp(uri);
	req.Method = "POST";
	req.ContentType = "application/x-www-form-urlencoded";
	req.ContentLength = buf.Length;
	req.Referer = "https://twitter.com/";
	req.ServicePoint.Expect100Continue = false;
	req.CookieContainer = new CookieContainer();
	if (cookies != null)
	{
	req.CookieContainer.Add(cookies);
	}

	using (var rs = req.GetRequestStream())
	{
	rs.Write(buf, 0, buf.Length);
	}

	string html = null;
	using (var res = req.GetResponse())
	{
	using (var rs = res.GetResponseStream())
	{
	using (var sr = new StreamReader(rs, Encoding.UTF8))
	{
	html = sr.ReadToEnd();
	}
	}
	return req.CookieContainer.GetCookies(uri);
	}
	}

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Program.cs

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DevelopmentTwitter

Posted by jz5