/// <summary>
/// Following the 3-legged authorization, you can exchange a request token for an access token
/// using this method. This is the third and final step of the authorization process.
/// </summary>
/// <param name="verifier">The verification key received after the user has accepted the app.</param>
/// <returns>An instance of <see cref="OAuthAccessTokenResponse"/> representing the response.</returns>
public override OAuthAccessTokenResponse GetAccessToken(string verifier)
{
// Flickr apparently deviates from the OAuth 1.0a specification, since they require the OAuth properties to
// be specified in the query string.
// Some error checking
if (AccessTokenUrl == null)
{
throw new PropertyNotSetException("AccessTokenUrl");
}
if (ConsumerKey == null)
{
throw new PropertyNotSetException("ConsumerKey");
}
if (ConsumerSecret == null)
{
throw new PropertyNotSetException("ConsumerSecret");
}
if (Token == null)
{
throw new PropertyNotSetException("Token");
}
// Initialize the query string
HttpQueryString queryString = new HttpQueryString {
{ "oauth_verifier", verifier }
};
// Generate the OAuth signature
string signature = GenerateSignature(HttpMethod.Get, AccessTokenUrl, queryString, null);
// Append the OAuth properties to the query string
queryString.Add("oauth_nonce", Nonce);
queryString.Add("oauth_timestamp", Timestamp);
queryString.Add("oauth_consumer_key", ConsumerKey);
queryString.Add("oauth_signature_method", "HMAC-SHA1");
queryString.Add("oauth_version", "1.0");
queryString.Add("oauth_token", Token);
if (!string.IsNullOrWhiteSpace(Callback))
{
queryString.Add("oauth_callback", Callback);
}
queryString.Add("oauth_signature", signature);
// Make the call to the API
IHttpResponse response = HttpUtils.Requests.Get(AccessTokenUrl, queryString);
// Validate the response
FlickrResponse.ValidateResponse(response);
// Parse the response body
OAuthAccessToken body = OAuthAccessToken.Parse(this, response.Body);
// Parse the response
return(OAuthAccessTokenResponse.ParseResponse(response, body));
}
/// <summary>
/// Gets a request token from the provider. After acquiring a request token, the user should be redirected
/// to the website of the provider for approving the application. If successful, the user will be redirected
/// back to the specified callback URL where you then can exchange the request token for an access token.
/// </summary>
/// <returns>An instance of <see cref="OAuthRequestTokenResponse"/> representing the response.</returns>
public override OAuthRequestTokenResponse GetRequestToken()
{
// Flickr apparently deviates from the OAuth 1.0a specification, since they require the OAuth properties to
// be specified in the query string.
// Some error checking
if (RequestTokenUrl == null)
{
throw new PropertyNotSetException("RequestTokenUrl");
}
if (AuthorizeUrl == null)
{
throw new PropertyNotSetException("AuthorizeUrl");
}
if (ConsumerKey == null)
{
throw new PropertyNotSetException("ConsumerKey");
}
if (ConsumerSecret == null)
{
throw new PropertyNotSetException("ConsumerSecret");
}
if (Callback == null)
{
throw new PropertyNotSetException("Callback");
}
// Generate the OAuth signature
string signature = GenerateSignature(HttpMethod.Get, RequestTokenUrl, default(IHttpQueryString), null);
// Append the OAuth properties to the query string
HttpQueryString queryString = new HttpQueryString {
{ "oauth_nonce", Nonce },
{ "oauth_timestamp", Timestamp },
{ "oauth_consumer_key", ConsumerKey },
{ "oauth_signature_method", "HMAC-SHA1" },
{ "oauth_version", "1.0" },
{ "oauth_signature", signature },
{ "oauth_callback", Callback }
};
// Make the call to the API
IHttpResponse response = HttpUtils.Requests.Get(RequestTokenUrl, queryString);
// Validate the response
FlickrResponse.ValidateResponse(response);
// Parse the response body
OAuthRequestToken body = OAuthRequestToken.Parse(this, response.Body);
// Parse the response
return(OAuthRequestTokenResponse.ParseResponse(response, body));
}
