/// <summary>
/// For a given request token and verifier string return an access token.
/// </summary>
/// <param name="requestToken"></param>
/// <param name="requestTokenSecret"></param>
/// <param name="verifier"></param>
/// <returns></returns>
public OAuthAccessToken OAuthGetAccessToken(string requestToken, string requestTokenSecret, string verifier)
{
CheckApiKey();
string url = "https://www.flickr.com/services/oauth/access_token";
Dictionary <string, string> parameters = OAuthGetBasicParameters();
parameters.Add("oauth_verifier", verifier);
parameters.Add("oauth_token", requestToken);
string sig = OAuthCalculateSignature("POST", url, parameters, requestTokenSecret);
parameters.Add("oauth_signature", sig);
string response = FlickrResponder.GetDataResponse(this, url, parameters);
var accessToken = FlickrNet.OAuthAccessToken.ParseResponse(response);
// Set current access token.
OAuthAccessToken = accessToken.Token;
OAuthAccessTokenSecret = accessToken.TokenSecret;
return(accessToken);
}
/// <summary>
/// Get an <see cref="OAuthRequestToken"/> for the given callback URL.
/// </summary>
/// <remarks>Specify 'oob' as the callback for no callback to be performed.</remarks>
/// <param name="callback">The callback Uri, or 'oob' if no callback is to be performed.</param>
/// <returns></returns>
public OAuthRequestToken OAuthGetRequestToken(string callback)
{
string url = "http://www.flickr.com/services/oauth/request_token";
Dictionary <string, string> parameters = OAuthGetBasicParameters();
parameters.Add("oauth_callback", callback);
string sig = OAuthCalculateSignature("POST", url, parameters, null);
parameters.Add("oauth_signature", sig);
string response = FlickrResponder.GetDataResponse(this, url, parameters);;
return(OAuthRequestToken.ParseResponse(response));
}
internal T GetResponse <T>(IDictionary <string, string> parameters) where T : class, IFlickrParsable, new()
{
if (!parameters.ContainsKey("oauth_consumer_key"))
{
parameters.Add("oauth_consumer_key", ApiKey);
}
var result = FlickrResponder.GetDataResponse(this, BaseApiUrl, parameters);
LastResponse = result;
if (typeof(T).IsEnum)
{
return(default(T));
}
if (typeof(T).GetInterface("FlickrNet.IFlickrParsable") != null)
{
using (var reader = new XmlTextReader(new StringReader(result)))
{
reader.WhitespaceHandling = WhitespaceHandling.None;
if (!reader.ReadToDescendant("rsp"))
{
throw new XmlException("Unable to find response element 'rsp' in Flickr response");
}
while (reader.MoveToNextAttribute())
{
if (reader.LocalName == "stat" && reader.Value == "fail")
{
throw ExceptionHandler.CreateResponseException(reader);
}
}
reader.MoveToElement();
reader.Read();
var item = new T();
item.Load(reader);
return(item);
}
}
return(default(T));
}
private T GetResponse <T>(Dictionary <string, string> parameters, TimeSpan cacheTimeout) where T : IFlickrParsable, new()
{
// Flow for GetResponse.
// 1. Check API Key
// 2. Calculate Cache URL.
// 3. Check Cache for URL.
// 4. Get Response if not in cache.
// 5. Write Cache.
// 6. Parse Response.
CheckApiKey();
parameters["api_key"] = ApiKey;
// If performing one of the old 'flickr.auth' methods then use old authentication details.
var method = parameters["method"];
// User of obsolete AuthToken property while we transition over to the new OAuth authentication process.
#pragma warning disable 612,618
if (method.StartsWith("flickr.auth") && !method.EndsWith("oauth.checkToken"))
{
if (!String.IsNullOrEmpty(AuthToken))
{
parameters["auth_token"] = AuthToken;
}
}
else
{
// If OAuth Token exists or no authentication required then use new OAuth
if (!String.IsNullOrEmpty(OAuthAccessToken) || String.IsNullOrEmpty(AuthToken))
{
parameters.Remove("api_key");
OAuthGetBasicParameters(parameters);
if (!String.IsNullOrEmpty(OAuthAccessToken))
{
parameters["oauth_token"] = OAuthAccessToken;
}
}
else
{
parameters["auth_token"] = AuthToken;
}
}
#pragma warning restore 612,618
var url = CalculateUri(parameters, !String.IsNullOrEmpty(sharedSecret));
lastRequest = url;
string responseXml;
if (InstanceCacheDisabled)
{
responseXml = FlickrResponder.GetDataResponse(this, BaseUri.AbsoluteUri, parameters);
}
else
{
var urlComplete = url;
var cached = (ResponseCacheItem)Cache.Responses.Get(urlComplete, cacheTimeout, true);
if (cached != null)
{
Debug.WriteLine("Cache hit.");
responseXml = cached.Response;
}
else
{
Debug.WriteLine("Cache miss.");
responseXml = FlickrResponder.GetDataResponse(this, BaseUri.AbsoluteUri, parameters);
var resCache = new ResponseCacheItem(new Uri(urlComplete), responseXml, DateTime.UtcNow);
Cache.Responses.Shrink(Math.Max(0, Cache.CacheSizeLimit - responseXml.Length));
Cache.Responses[urlComplete] = resCache;
}
}
lastResponse = responseXml;
//responseXml = responseXml.Trim();
var reader = new XmlTextReader(new StringReader(responseXml))
{
WhitespaceHandling = WhitespaceHandling.None,
};
if (!reader.ReadToDescendant("rsp"))
{
throw new XmlException("Unable to find response element 'rsp' in Flickr response");
}
while (reader.MoveToNextAttribute())
{
if (reader.LocalName == "stat" && reader.Value == "fail")
{
throw ExceptionHandler.CreateResponseException(reader);
}
}
reader.MoveToElement();
reader.Read();
var item = new T();
item.Load(reader);
return(item);
}
private T GetResponse <T>(Dictionary <string, string> parameters, TimeSpan cacheTimeout) where T : IFlickrParsable, new()
{
// Flow for GetResponse.
// 1. Check API Key
// 2. Calculate Cache URL.
// 3. Check Cache for URL.
// 4. Get Response if not in cache.
// 5. Write Cache.
// 6. Parse Response.
CheckApiKey();
parameters["api_key"] = ApiKey;
// If performing one of the old 'flickr.auth' methods then use old authentication details.
var method = parameters["method"];
// User of obsolete AuthToken property while we transition over to the new OAuth authentication process.
#pragma warning disable 612,618
if (method.StartsWith("flickr.auth", StringComparison.Ordinal) && !method.EndsWith("oauth.checkToken", StringComparison.Ordinal))
{
if (!string.IsNullOrEmpty(AuthToken))
{
parameters["auth_token"] = AuthToken;
}
}
else
{
// If OAuth Token exists or no authentication required then use new OAuth
if (!string.IsNullOrEmpty(OAuthAccessToken) || string.IsNullOrEmpty(AuthToken))
{
parameters.Remove("api_key");
OAuthGetBasicParameters(parameters);
if (!string.IsNullOrEmpty(OAuthAccessToken))
{
parameters["oauth_token"] = OAuthAccessToken;
}
}
else
{
parameters["auth_token"] = AuthToken;
}
}
#pragma warning restore 612,618
var url = CalculateUri(parameters, !string.IsNullOrEmpty(sharedSecret));
lastRequest = url;
string responseXml;
if (InstanceCacheDisabled)
{
responseXml = FlickrResponder.GetDataResponse(this, BaseUri.AbsoluteUri, parameters);
}
else
{
var urlComplete = url;
var cached = (ResponseCacheItem)Cache.Responses.Get(urlComplete, cacheTimeout, true);
if (cached != null)
{
Debug.WriteLine("Cache hit.");
responseXml = cached.Response;
}
else
{
Debug.WriteLine("Cache miss.");
responseXml = FlickrResponder.GetDataResponse(this, BaseUri.AbsoluteUri, parameters);
var resCache = new ResponseCacheItem(new Uri(urlComplete), responseXml, DateTime.UtcNow);
Cache.Responses.Shrink(Math.Max(0, Cache.CacheSizeLimit - responseXml.Length));
Cache.Responses[urlComplete] = resCache;
}
}
lastResponse = responseXml;
var item = new T();
item.Load(responseXml);
return(item);
}
