public static DbxObject Register(Instance instance, string type, string email, string password)
{
// Check email isn't already in use
var objs = instance.LocateEq(type, Locate.GenerateSimple("email", email)); // TODO: Race condition?
if (objs.Count > 0) throw new UserErrorException("auth.ambigious", "Invalid address, email already in use '" + email + "'");
// Calculate auth factors
var salt = Util.GenerateSalt(32);
var authhash = GenerateAuthHash(email, password, salt);
// Create object
var properties = new Dictionary<string, object>();
properties["email"] = email;
properties["authhash"] = authhash;
properties["salt"] = salt;
return instance.Create(type, "system", properties);
}
public override DbxObject GetObject(Instance instance, string type, object rawauthdata)
{
DbxObject obj;
string access_token;
string partner = null;
bool tos = false;
try {
var authdata = (Dictionary<string, object>)rawauthdata;
// Get access_token
access_token = (string)authdata["access_token"];
// Try and get partneruid
if (authdata.ContainsKey("partner")) partner = (string)authdata["partner"];
// Try and get TOS
if (authdata.ContainsKey("tos")) tos = (bool)authdata["tos"];
} catch {
throw new UserErrorException("parameter.invalid", "auth; Invalid form");
}
// Perform FB query
string result;
try {
result = Facebook.WebGet("https://graph.facebook.com/me?fields=id,name,first_name,last_name,link,email,timezone,locale,verified,updated_time&access_token=" + Common.Util.UrlEncode(access_token));
} catch (OAuthException) {
throw new ObjectNotExistException();
}
// Convert response to objects
var ret = new Dictionary<string, object>();
try {
ret = Common.Util.JsonDeserialize<Dictionary<string, object>>(result);
} catch (Exception) {
throw new UserErrorException("upstream", "Unexpected response from Facebook");
}
// Extract key values
if (ret["id"].ToString() == "0" || ret["id"].ToString() == "") throw new UserErrorException("upstream", "Invalid FBID returned from Facebook");
var fbid = Util.ParseNumber(ret["id"]);
string email = "";
if (ret.ContainsKey("email")) email = ((string)ret["email"]).ToLowerInvariant();
// Calculate properties
var props = new Dictionary<string, object>();
props["email"] = email;
props["fbid"] = fbid;
props["creatorModule"] = "auth";
if (ret.ContainsKey("name")) props["dname"] = ret["name"];
if (ret.ContainsKey("name")) props["aname"] = ret["name"];
if (ret.ContainsKey("fbLink")) props["fbLink"] = ret["link"];
if (ret.ContainsKey("fbTimezone")) props["fbTimezone"] = ret["timezone"];
if (ret.ContainsKey("fbLocale")) props["fbLocale"] = ret["locale"];
if (ret.ContainsKey("fbVerified")) props["fbVerified"] = ret["verified"];
if (ret.ContainsKey("fbUpdated")) props["fbUpdated"] = ret["updated_time"];
if (tos) props["tos"] = true;
if (null != partner) {
// Check object exists
try {
obj = instance.Uid("partner$" + partner);
} catch (ObjectNotExistException) {
throw new UserErrorException("parameter.invalid", "Invalid partner reference in 'partner'");
}
// Set property
props["partner"] = "partner$" + partner;
}
// Plan A: Try search by ID
var objs = instance.LocateEq("user", Locate.GenerateSimple("fbid", fbid));
if (objs.Count == 0) {
// User not found, create
obj = instance.Create("user", "system", props);
} else {
// User found, update
// Find oldest record (HACK: To handle ambigious matches)
obj = objs[0];
foreach (var item in objs) {
if (item.Predecessor > 0 && item.Predecessor < obj.Predecessor) obj = item;
};
obj = obj.GetWritableInstance();
obj.Set(props, "system");
}
// Enforce TOS
if (!((bool)obj.GetProp("tos", "system"))) throw new UserErrorException("auth.prerequisite.tos", "Terms of Service has not yet been accepted");
return obj;
}