/// <summary>
/// Calculates the URL to redirect the user to Flickr web site for
/// authentication. Used by desktop application.
/// See <see cref="AuthGetFrob"/> for example code.
/// </summary>
/// <param name="frob">The FROB to be used for authentication.</param>
/// <param name="authLevel">The <see cref="AuthLevel"/> stating the maximum authentication level your application requires.</param>
/// <returns>The url to redirect the user to.</returns>
public string AuthCalcUrl(string frob, AuthLevel authLevel)
{
if (sharedSecret == null)
{
throw new SignatureRequiredException();
}
string hash = sharedSecret + "api_key" + apiKey + "frob" + frob + "perms" + UtilityMethods.AuthLevelToString(authLevel);
hash = UtilityMethods.MD5Hash(hash);
string url = AuthUrl + "?api_key=" + apiKey + "&perms=" + UtilityMethods.AuthLevelToString(authLevel) + "&frob=" + frob;
url += "&api_sig=" + hash;
return(url);
}
/// <summary>
/// Calculates the URL to redirect the user to Flickr web site for
/// authentication. Used by Web applications.
/// See <see cref="AuthGetFrob"/> for example code.
/// </summary>
/// <param name="authLevel">The <see cref="AuthLevel"/> stating the maximum authentication level your application requires.</param>
/// <param name="extra">An extra string value which Flickr will return to the callback URL along with the frob.</param>
/// <returns>The url to redirect the user to.</returns>
public string AuthCalcWebUrl(AuthLevel authLevel, string extra)
{
CheckApiKey();
CheckSigned();
string textToHash = sharedSecret + "api_key" + apiKey;
string url = AuthUrl + "?api_key=" + apiKey + "&perms=" + UtilityMethods.AuthLevelToString(authLevel);
if (!string.IsNullOrEmpty(extra))
{
textToHash += "extra" + extra;
url += "&extra=" + Uri.EscapeDataString(extra);
}
textToHash += "perms" + UtilityMethods.AuthLevelToString(authLevel);
string hash = UtilityMethods.MD5Hash(textToHash);
url += "&api_sig=" + hash;
return(url);
}
