public FbAuth Authenticate()
{
// Allready logged in
if (!String.IsNullOrEmpty(sessionKey))
{
return(FbAuth.Success);
}
string authToken = ChannelContext.Current.ClientContext.GetSetting("/Channels/Facebook/AuthToken").ToString();
if (String.IsNullOrEmpty(authToken))
{
return(FbAuth.NoAuthKey);
}
Dictionary <string, string> requestParams = new Dictionary <string, string>();
requestParams.Add("method", "auth.getSession");
requestParams.Add("api_key", apiKey);
requestParams.Add("v", "1.0");
requestParams.Add("auth_token", authToken);
var result = channel.GetSession(apiKey, GenerateSignature(requestParams, apiSecret), authToken);
foreach (XElement resultElement in result.Elements())
{
if (resultElement.Name.LocalName.Equals("error_code"))
{
return(FbAuth.Error);
}
if (resultElement.Name.LocalName.Equals("session_key"))
{
sessionKey = resultElement.Value;
}
else if (resultElement.Name.LocalName.Equals("uid"))
{
uid = resultElement.Value;
}
else if (resultElement.Name.LocalName.Equals("secret"))
{
sessionSecret = resultElement.Value;
}
}
ChannelContext.Current.ClientContext.SaveSetting("/Channels/Facebook/SessionKey", sessionKey);
ChannelContext.Current.ClientContext.SaveSetting("/Channels/Facebook/SessionSecret", sessionSecret);
ChannelContext.Current.ClientContext.DeleteSetting("/Channels/Facebook/AuthToken");
return(FbAuth.Success);
}
