/// <summary>
/// OnLoad method
/// </summary>
/// <param name="e"></param>
protected override void OnLoad(EventArgs e) {
string SignedRequest = HttpContext.Current.Request["signed_request"];
if (SignedRequest == null) {
throw new FacebookException("Cannot find Facebook POST data as expected. Make sure you're viewing this page in an Iframe Application Tab of a Facebook Page.");
}
data = Helpers.Generic.ParseSignedRequest(SignedRequest);
if (data["oauth_token"] != null) {
_Api = new GraphApi.Api((string)data["oauth_token"], Helpers.Generic.UnixTimestampToDateTime((int)data["expires"]));
}
base.OnLoad(e);
}
/// <summary>
/// Event handler of 'OnInit' event
/// </summary>
/// <param name="e"></param>
protected override void OnLoad(EventArgs e) {
if (!IsPostBack) {
string SignedRequest = HttpContext.Current.Request["signed_request"];
if (SignedRequest == null) {
throw new FacebookException("Cannot find Facebook POST data as expected. Make sure you're viewing this page in a Facebook Iframe Application.");
}
JsonObject JO = Helpers.Generic.ParseSignedRequest(SignedRequest);
if (JO["user_id"] == null) IsAuthorized = false;
else {
IsAuthorized = true;
_Api = new GraphApi.Api((string)JO["oauth_token"], Helpers.Generic.UnixTimestampToDateTime((int)JO["expires"]));
Page.Cache["GraphApi"] = _Api;
}
UserData = new BasicUserData((JsonObject)JO["user"]);
} else {
_Api = (GraphApi.Api)Page.Cache["GraphApi"];
}
bool RedirectForExtendedPermission = false;
if (_Api != null&&CheckExtendedPermissions&&!string.IsNullOrEmpty(ExtendedPermissions.Trim())) {
JsonArray JA = _Api.Fql(string.Format("SELECT {0} FROM permissions WHERE uid = me()",ExtendedPermissions));
JsonObject JO = JA.JsonObjects[0];
foreach (KeyValuePair<string, object> KVP in JO.Properties) {
if ((int)KVP.Value == 0) {
RedirectForExtendedPermission = true;
break;
}
}
}
if ((_Api==null && RequireLogin)||RedirectForExtendedPermission) {
FacebookGraphToolkitConfiguration Config = (FacebookGraphToolkitConfiguration)WebConfigurationManager.GetSection("FacebookGraphToolkitConfiguration");
string RedirectUrl = Config._FacebookAppAddress + Config._PostAuthorizeRedirectURL;
string AuthorizeUrl = String.Format("https://graph.facebook.com/oauth/authorize?client_id={0}&redirect_uri={1}&scope={2}", Config._FacebookAppID, RedirectUrl, ExtendedPermissions);
Helpers.IframeHelper.IframeRedirect(AuthorizeUrl, false);
}
base.OnLoad(e);
}
