static string GenerateSignature(string consumerSecret, Uri uri, HttpMethod method, Token token, IEnumerable<KeyValuePair<string, string>> parameters)
{
if (ComputeHash == null)
{
throw new InvalidOperationException("ComputeHash is null, must initialize before call OAuthUtility.HashFunction = /* your computeHash code */ at once.");
}
var hmacKeyBase = consumerSecret.UrlEncode() + "&" + ((token == null) ? "" : token.Secret).UrlEncode();
// escaped => unescaped[]
var queryParams = Utility.ParseQueryString(uri.GetComponents(UriComponents.Query | UriComponents.KeepDelimiter, UriFormat.UriEscaped));
var stringParameter = parameters
.Where(x => x.Key.ToLower() != "realm")
.Concat(queryParams)
.Select(p => new { Key = p.Key.UrlEncode(), Value = p.Value.UrlEncode() })
.OrderBy(p => p.Key, StringComparer.Ordinal)
.ThenBy(p => p.Value, StringComparer.Ordinal)
.Select(p => p.Key + "=" + p.Value)
.ToString("&");
var signatureBase = method.ToString() +
"&" + uri.GetComponents(UriComponents.SchemeAndServer | UriComponents.Path, UriFormat.Unescaped).UrlEncode() +
"&" + stringParameter.UrlEncode();
var hash = ComputeHash(Encoding.UTF8.GetBytes(hmacKeyBase), Encoding.UTF8.GetBytes(signatureBase));
return Convert.ToBase64String(hash).UrlEncode();
}
public OAuthEchoMessageHandler(string serviceProvider, string realm, string consumerKey, string consumerSecret,
Token token = null,
IEnumerable<KeyValuePair<string, string>> optionalOAuthHeaderParameters = null)
: this(new HttpClientHandler(), serviceProvider, realm, consumerKey, consumerSecret, token,
optionalOAuthHeaderParameters)
{
}
public OAuthEchoMessageHandler(HttpMessageHandler innerHandler, string serviceProvider, string realm,
string consumerKey, string consumerSecret,
Token token = null,
IEnumerable<KeyValuePair<string, string>> optionalOAuthHeaderParameters = null)
: base(new OAuthMessageHandler(new OAuthEchoMessagePostHandler(innerHandler, serviceProvider),
consumerKey, consumerSecret, token, AddRealm(optionalOAuthHeaderParameters, realm)))
{
}
public static IEnumerable<KeyValuePair<string, string>> BuildBasicParameters(string consumerKey, string consumerSecret, string url, HttpMethod method, Token token = null, IEnumerable<KeyValuePair<string, string>> optionalParameters = null)
{
Precondition.NotNull(url, "url");
var parameters = new List<KeyValuePair<string, string>>(capacity: 7)
{
new KeyValuePair<string,string>("oauth_consumer_key", consumerKey),
new KeyValuePair<string,string>("oauth_nonce", random.Next().ToString() ),
new KeyValuePair<string,string>("oauth_timestamp", DateTime.UtcNow.ToUnixTime().ToString() ),
new KeyValuePair<string,string>("oauth_signature_method", "HMAC-SHA1" ),
new KeyValuePair<string,string>("oauth_version", "1.0" )
};
if (token != null) parameters.Add(new KeyValuePair<string, string>("oauth_token", token.Key));
if (optionalParameters == null) optionalParameters = Enumerable.Empty<KeyValuePair<string, string>>();
var signature = GenerateSignature(consumerSecret, new Uri(url), method, token, parameters.Concat(optionalParameters));
parameters.Add(new KeyValuePair<string, string>("oauth_signature", signature));
return parameters;
}
public OAuthMessageHandler(HttpMessageHandler innerHandler, string consumerKey, string consumerSecret, Token token = null, IEnumerable <KeyValuePair <string, string> > optionalOAuthHeaderParameters = null)
: base(innerHandler)
{
this.consumerKey = consumerKey;
this.consumerSecret = consumerSecret;
this.token = token;
this.parameters = optionalOAuthHeaderParameters ?? Enumerable.Empty <KeyValuePair <string, string> >();
}
public OAuthMessageHandler(string consumerKey, string consumerSecret, Token token = null, IEnumerable <KeyValuePair <string, string> > optionalOAuthHeaderParameters = null)
: this(new HttpClientHandler(), consumerKey, consumerSecret, token, optionalOAuthHeaderParameters)
{
}
