public bool getAccessToken(string username, string password)
{
var timestamp = OAuth.CreateTimestamp().ToString();
var nonce = OAuth.CreateNonce();
var oauthParameters = new NameValueCollection
{
{ OAuth.OAuthTimestampKey, timestamp },
{ OAuth.OAuthNonceKey, nonce },
{ OAuth.OAuthVersionKey, OAuth.OAuthVersion },
{ OAuth.OAuthSignatureMethodKey, OAuth.HMACSHA1SignatureType },
{ OAuth.OAuthConsumerKeyKey, CONSUMER_KEY },
{ OAuth.XAuthAuthModeKey, OAuth.ClientAuth },
{ OAuth.XAuthPasswordKey, password },
{ OAuth.XAuthUsernameKey, username }
};
// prepare a signature base
string url = OAuth.NormalizeUrl(XAUTH_URL);
var parameters = OAuth.NormalizeRequestParameters(oauthParameters);
var signatureBase = OAuth.ConcatenateRequestElements("POST", url, parameters);
// obtain a signature and add it to oauth header parameters
var signature = OAuth.CreateSignature(signatureBase, CONSUMER_SECRET, null);
oauthParameters.Add(OAuth.OAuthSignatureKey, signature);
// build request authorization header
var header = new StringBuilder();
header.Append("OAuth realm=\"Twitter API\",");
for (var i = 0; i < oauthParameters.Count; i++)
{
var key = oauthParameters.GetKey(i);
var pair = key + "=\"" + oauthParameters[key] + "\"";
header.Append(pair);
if (i < oauthParameters.Count - 1)
{
header.Append(",");
}
}
Dictionary <string, string> headers = new Dictionary <string, string>();
headers["Authorization"] = header.ToString();
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.ServicePoint.Expect100Continue = false;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = WebRequestMethods.Http.Post;
request.Timeout = 7000;
foreach (string key in headers.Keys)
{
request.Headers.Add(key, headers[key]);
}
if (Properties.Settings.Default.ProxyServer.Length > 0)
{
request.Proxy = new WebProxy(string.Format("http://{0}:{1}", Properties.Settings.Default.ProxyServer, Properties.Settings.Default.ProxyPort));
}
byte[] bytes = Encoding.UTF8.GetBytes(
string.Format("{0}={1}&{2}={3}&{4}={5}",
OAuth.XAuthAuthModeKey, OAuth.ClientAuth,
OAuth.XAuthPasswordKey, Util.URLEncode(password),
OAuth.XAuthUsernameKey, Util.URLEncode(username))
);
request.ContentLength = bytes.Length;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(bytes, 0, bytes.Length);
}
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
if (response.StatusCode != HttpStatusCode.OK)
{
throw new UnauthorizedAccessException();
}
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
Dictionary <String, String> dict = new Dictionary <string, string>();
string s;
while ((s = reader.ReadLine()) != null)
{
foreach (string r in s.Split('&'))
{
string[] kv = r.Split('=');
if (kv.Length == 2)
{
dict[kv[0]] = kv[1];
}
}
}
token = Properties.Settings.Default.OAuthToken = dict[OAuth.OAuthTokenKey];
tokenSecret = Properties.Settings.Default.OAuthTokenSecret = dict[OAuth.OAuthTokenSecretKey];
}
}
return(true);
}
public Dictionary <string, string> createOAuthHeader(string method, string url, Dictionary <String, String> postData)
{
var oauthParameters = new NameValueCollection
{
{ OAuth.OAuthTimestampKey, OAuth.CreateTimestamp().ToString() },
{ OAuth.OAuthNonceKey, OAuth.CreateNonce() },
{ OAuth.OAuthVersionKey, OAuth.OAuthVersion },
{ OAuth.OAuthSignatureMethodKey, OAuth.HMACSHA1SignatureType },
{ OAuth.OAuthConsumerKeyKey, consumerKey },
{ OAuth.OAuthTokenKey, token }
};
if (postData != null)
{
foreach (String key in postData.Keys)
{
oauthParameters.Add(key, postData[key]);
}
}
int index = url.IndexOf("?");
if (index != -1)
{
string[] kv = url.Substring(index + 1).Split('&');
foreach (string s in kv)
{
string[] s2 = s.Split('=');
oauthParameters.Add(s2[0], s2[1]);
}
}
foreach (string s in oauthParameters.Keys)
{
System.Console.WriteLine(s + "=" + oauthParameters[s]);
}
// prepare a signature base
url = OAuth.NormalizeUrl(url);
System.Console.WriteLine("Normalize URL = " + url);
var parameters = OAuth.NormalizeRequestParameters(oauthParameters);
System.Console.WriteLine("parameters = " + parameters);
var signatureBase = OAuth.ConcatenateRequestElements(method, url, parameters);
System.Console.WriteLine("signatureBase = " + signatureBase);
// obtain a signature and add it to oauth header parameters
var signature = OAuth.CreateSignature(signatureBase, CONSUMER_SECRET, tokenSecret);
System.Console.WriteLine("signature = " + signature);
if (postData != null)
{
foreach (String key in postData.Keys)
{
oauthParameters.Remove(key);
}
}
if (index != -1)
{
string[] kv = url.Substring(index + 1).Split('&');
foreach (string s in kv)
{
string[] s2 = s.Split('=');
oauthParameters.Remove(s2[0]);
}
}
oauthParameters.Add(OAuth.OAuthSignatureKey, signature);
// build request authorization header
var header = new StringBuilder();
header.Append("OAuth realm=\"" + url + "\",");
for (var i = 0; i < oauthParameters.Count; i++)
{
var key = oauthParameters.GetKey(i);
var pair = key + "=\"" + oauthParameters[key] + "\"";
header.Append(pair);
if (i < oauthParameters.Count - 1)
{
header.Append(",");
}
}
System.Console.WriteLine("Authorization = " + header.ToString());
Dictionary <string, string> headers = new Dictionary <string, string>();
headers["Authorization"] = header.ToString();
return(headers);
}