private string GetAuthenticationHeaderForRequest(Uri requestUri, HttpMethod method, Dictionary <String, String> postvars)
{
List <KeyValuePair <string, string> > parameters = new List <KeyValuePair <string, string> >()
{
new KeyValuePair <string, string>(Constants.oauth_consumer_key, _apiKey),
new KeyValuePair <string, string>(Constants.oauth_nonce, OAuthHelpers.GenerateNonce()),
new KeyValuePair <string, string>(Constants.oauth_timestamp, OAuthHelpers.GenerateTimestamp()),
new KeyValuePair <string, string>(Constants.oauth_signature_method, "HMAC-SHA1"),
new KeyValuePair <string, string>(Constants.oauth_version, Constants.oauth_version_1a),
new KeyValuePair <string, string>(Constants.oauth_token, _authToken),
};
if (postvars != null)
{
foreach (var item in postvars)
{
parameters.Add(new KeyValuePair <string, string>(item.Key, item.Value));
}
// reset parameters for future calls
_parameters = null;
}
string baseUri = requestUri.OriginalString;
// We need to handle the case where the request comes with query parameters
if (!string.IsNullOrEmpty(requestUri.Query))
{
baseUri = requestUri.OriginalString.Replace(requestUri.Query, "");
foreach (var param in requestUri.Query.Split(new char[] { '?', '&' }, StringSplitOptions.RemoveEmptyEntries))
{
var values = param.Split('=');
string name = values[0];
string value = string.Empty;
if (values.Length > 1)
{
value = values[1];
}
parameters.Add(new KeyValuePair <string, string>(Uri.UnescapeDataString(name), Uri.UnescapeDataString(value)));
}
}
string baseString = OAuthHelpers.GenerateBaseString(baseUri, method.ToString(), parameters);
string sig = OAuthHelpers.EncodeValue(OAuthHelpers.GenerateHMACDigest(baseString, _secret, _authTokenSecret));
parameters.Add(new KeyValuePair <string, string>(Constants.oauth_signature, sig));
StringBuilder sb = new StringBuilder();
foreach (var param in parameters)
{
if (param.Key.StartsWith("oauth"))
{
sb.AppendFormat("{0}={1},", param.Key, System.Net.WebUtility.HtmlEncode(param.Value));
}
}
sb.Remove(sb.Length - 1, 1);
return(sb.ToString());
}
private string CreateRequest(string url, string method, string tokSecret, params object[] args)
{
SortedSet <KeyValuePair <string, string> > parameters = new SortedSet <KeyValuePair <string, string> >(new OAuthParameterComparer())
{
new KeyValuePair <string, string>(Constants.oauth_consumer_key, _apiKey),
new KeyValuePair <string, string>(Constants.oauth_nonce, OAuthHelpers.GenerateNonce()),
new KeyValuePair <string, string>(Constants.oauth_timestamp, OAuthHelpers.GenerateTimestamp()),
new KeyValuePair <string, string>(Constants.oauth_signature_method, "HMAC-SHA1"),
};
if (!string.IsNullOrEmpty(_oauthVersion))
{
parameters.Add(new KeyValuePair <string, string>(Constants.oauth_version, _oauthVersion));
}
for (int i = 0; i < args.Length; i += 2)
{
parameters.Add(new KeyValuePair <string, string>(args[i].ToString(), args[i + 1].ToString()));
}
string baseString = OAuthHelpers.GenerateBaseString(url, method, parameters);
string sig = OAuthHelpers.EncodeValue(OAuthHelpers.GenerateHMACDigest(baseString, OAuthHelpers.CreateHashKeyBytes(_secret, tokSecret)));
parameters.Add(new KeyValuePair <string, string>(Constants.oauth_signature, sig));
StringBuilder sb = new StringBuilder();
foreach (var param in parameters)
{
sb.AppendFormat("{0}={1}&", param.Key, System.Net.WebUtility.HtmlEncode(param.Value));
}
sb.Remove(sb.Length - 1, 1);
return(sb.ToString());
}
public OAuthMessageHandler(string apiKey, string secret, string authToken, string authTokenSecret, IOAuthSignatureData provider)
{
_apiKey = apiKey;
_secret = secret;
_authToken = authToken;
_authTokenSecret = authTokenSecret;
_signatureDataProvider = provider;
_hmacSha1Param = new KeyValuePair <string, string>(Constants.oauth_signature_method, "HMAC-SHA1");
_apiKeyParam = new KeyValuePair <string, string>(Constants.oauth_consumer_key, _apiKey);
_authTokenParam = new KeyValuePair <string, string>(Constants.oauth_token, _authToken);
// Construct the OAuthVersion parameter based on the requested version.
_oauthVersionParam = new KeyValuePair <string, string>(Constants.oauth_version, _signatureDataProvider.GetOAuthVersion());
_keyBytes = OAuthHelpers.CreateHashKeyBytes(_secret, _authTokenSecret);
this.InnerHandler = new HttpClientHandler();
}
public OAuthAuthenticator(string apiKey, string secret, OAuthVersion oauthVersion)
{
_apiKey = apiKey;
_secret = secret;
_oauthVersion = OAuthHelpers.GetOAuthVersionAsString(oauthVersion);
}
private async Task <string> GetAuthenticationHeaderForRequest(HttpRequestMessage request)
{
Uri requestUri = request.RequestUri;
HttpMethod method = request.Method;
List <KeyValuePair <string, string> > parameters = new List <KeyValuePair <string, string> >()
{
new KeyValuePair <string, string>(Constants.oauth_consumer_key, _apiKey),
new KeyValuePair <string, string>(Constants.oauth_nonce, OAuthHelpers.GenerateNonce()),
new KeyValuePair <string, string>(Constants.oauth_timestamp, OAuthHelpers.GenerateTimestamp()),
new KeyValuePair <string, string>(Constants.oauth_signature_method, "HMAC-SHA1"),
new KeyValuePair <string, string>(Constants.oauth_version, Constants.oauth_version_1a),
new KeyValuePair <string, string>(Constants.oauth_token, _authToken),
};
string baseUri = requestUri.OriginalString;
// We need to handle the case where the request comes with query parameters, in URL or in body
string queryString = string.Empty;
if (!string.IsNullOrEmpty(requestUri.Query))
{
baseUri = requestUri.OriginalString.Replace(requestUri.Query, "");
queryString = requestUri.Query;
}
if (request.Content.Headers.ContentType.MediaType == "application/x-www-form-urlencoded")
{
string requestContent = await request.Content.ReadAsStringAsync();
queryString = $"{queryString}&{requestContent}";
}
foreach (var param in queryString.Split(new char[] { '?', '&' }, StringSplitOptions.RemoveEmptyEntries))
{
var values = param.Split('=');
string name = Uri.UnescapeDataString(values[0]);
name = name.Replace('+', ' ');
string value = string.Empty;
if (values.Length > 1)
{
value = Uri.UnescapeDataString(values[1]);
value = value.Replace('+', ' ');
}
parameters.Add(new KeyValuePair <string, string>(name, value));
}
string baseString = OAuthHelpers.GenerateBaseString(baseUri, method.ToString(), parameters);
string sig = OAuthHelpers.EncodeValue(OAuthHelpers.GenerateHMACDigest(baseString, _secret, _authTokenSecret));
parameters.Add(new KeyValuePair <string, string>(Constants.oauth_signature, sig));
StringBuilder sb = new StringBuilder();
foreach (var param in parameters)
{
if (param.Key.StartsWith("oauth"))
{
sb.AppendFormat("{0}={1},", param.Key, System.Net.WebUtility.HtmlEncode(param.Value));
}
}
sb.Remove(sb.Length - 1, 1);
return(sb.ToString());
}
private async Task <string> GetAuthenticationHeaderForRequest(HttpRequestMessage request)
{
SortedSet <KeyValuePair <string, string> > parameters = new SortedSet <KeyValuePair <string, string> >(new OAuthParameterComparer())
{
// Re-use the parameters that don't change
_apiKeyParam,
_hmacSha1Param,
_authTokenParam,
// Add the parameters that are unique for each call
new KeyValuePair <string, string>(Constants.oauth_nonce, _signatureDataProvider.GetNonce()),
new KeyValuePair <string, string>(Constants.oauth_timestamp, _signatureDataProvider.GetTimeStamp()),
};
// if we have specified the OAuthVersion, add it!
if (!string.IsNullOrEmpty(_oauthVersionParam.Value))
{
parameters.Add(_oauthVersionParam);
}
Uri requestUri = request.RequestUri;
string baseUri = requestUri.OriginalString;
// We need to handle the case where the request comes with query parameters, in URL or in body
string queryString = string.Empty;
if (!string.IsNullOrEmpty(requestUri.Query))
{
baseUri = requestUri.OriginalString.Replace(requestUri.Query, "");
queryString = requestUri.Query;
}
// concatenate the content with the request content if the media type says we should.
if (StringComparer.OrdinalIgnoreCase.Equals(request.Content?.Headers.ContentType?.MediaType, Constants.ContentType))
{
string requestContent = await request.Content.ReadAsStringAsync();
if (string.IsNullOrEmpty(queryString))
{
queryString = requestContent;
}
else
{
queryString = $"{queryString}&{requestContent}";
}
}
if (!string.IsNullOrEmpty(queryString))
{
ParseParameters(parameters, queryString);
}
string baseString = OAuthHelpers.GenerateBaseString(baseUri, request.Method.ToString(), parameters);
string sig = OAuthHelpers.EncodeValue(OAuthHelpers.GenerateHMACDigest(baseString, _keyBytes));
parameters.Add(new KeyValuePair <string, string>(Constants.oauth_signature, sig));
StringBuilder sb = new StringBuilder();
foreach (var param in parameters)
{
if (param.Key.StartsWith("oauth"))
{
sb.AppendFormat("{0}={1},", param.Key, System.Net.WebUtility.HtmlEncode(param.Value));
}
}
sb.Remove(sb.Length - 1, 1);
return(sb.ToString());
}
