private static string MakeSignature(string method, string baseUri, Dictionary <string, string> headers)
{
var items = from k in headers.Keys
orderby k
select k + "%3D" + OAuthUtils.PercentEncode(headers[k]);
return(method + "&" + OAuthUtils.PercentEncode(baseUri) + "&" +
string.Join("%26", items.ToArray()));
}
public static string AuthorizeRequest(string consumerKey, string consumerKeySecret, string oauthToken,
string oauthTokenSecret, string method, Uri uri, string data)
{
var headers = new Dictionary <string, string>
{
{ "oauth_consumer_key", consumerKey },
{ "oauth_nonce", MakeNonce() },
{ "oauth_signature_method", "HMAC-SHA1" },
{ "oauth_timestamp", MakeTimestamp() },
{ "oauth_version", "1.0" }
};
var signatureHeaders = new Dictionary <string, string>(headers);
if (!string.IsNullOrEmpty(oauthToken))
{
signatureHeaders.Add("oauth_token", oauthToken);
}
// Add the data and URL query string to the copy of the headers for computing the signature
if (!string.IsNullOrEmpty(data))
{
var parsed = HttpUtility.ParseQueryString(data);
foreach (string k in parsed.Keys)
{
signatureHeaders.Add(k, OAuthUtils.PercentEncode(parsed[k]));
}
}
var nvc = HttpUtility.ParseQueryString(uri.Query);
foreach (var key in nvc.Cast <string>().Where(key => key != null))
{
signatureHeaders.Add(key, OAuthUtils.PercentEncode(nvc[key]));
}
var signature = MakeSignature(method, uri.GetLeftPart(UriPartial.Path), signatureHeaders);
var compositeSigningKey = MakeSigningKey(consumerKeySecret, oauthTokenSecret);
var oauthSignature = MakeOAuthSignature(compositeSigningKey, signature);
headers.Add("oauth_signature", OAuthUtils.PercentEncode(oauthSignature));
return(HeadersToOAuth(headers));
}
public static string PostToUrl(TwitterAuthProvider oAuthProvider, string url, string accessToken, string accessTokenSecret, Dictionary <string, string> args, string acceptType = MimeTypes.Json)
{
var uri = new Uri(url);
var webReq = (HttpWebRequest)WebRequest.Create(uri);
webReq.Accept = acceptType;
webReq.Method = HttpMethods.Post;
string data = null;
if (args != null)
{
var sb = new StringBuilder();
foreach (var arg in args)
{
if (sb.Length > 0)
{
sb.Append("&");
}
sb.AppendFormat("{0}={1}", arg.Key, OAuthUtils.PercentEncode(arg.Value));
}
data = sb.ToString();
}
webReq.Headers[HttpRequestHeader.Authorization] = OAuthAuthorizer.AuthorizeRequest(
oAuthProvider, accessToken, accessTokenSecret, "POST", uri, data);
if (data != null)
{
webReq.ContentType = MimeTypes.FormUrlEncoded;
using (var writer = new StreamWriter(webReq.GetRequestStream()))
writer.Write(data);
}
using (var webRes = webReq.GetResponse())
{
return(webRes.ReadToEnd());
}
}
private static string MakeSigningKey(string consumerSecret, string oauthTokenSecret)
{
return(OAuthUtils.PercentEncode(consumerSecret) + "&" +
(oauthTokenSecret != null ? OAuthUtils.PercentEncode(oauthTokenSecret) : ""));
}