public DynDatabaseRequest ValidateAccess(DynDatabaseRequest dbRequest)
{
// Check permissions
dbRequest.State = PermissionState.Denied;
if (Context.DbServiceState.SecurityRuleTable.ContainsKey(dbRequest.DatabaseId))
{
foreach (var rule in Context.DbServiceState.SecurityRuleTable[dbRequest.DatabaseId]
.OrderBy(x => x.Priority))
{
if (rule.PathRegex.Match($"/{dbRequest.Path}").Success)
{
if (rule.Actions.HasFlag(dbRequest.RequestedAction))
{
dbRequest.State = rule.Allow ? PermissionState.Granted : PermissionState.Denied;
break;
}
}
}
}
// If denied by rules, check auth token
if (dbRequest.State == PermissionState.Denied)
{
if (AuthTokenValidator != null)
{
if (AuthTokenValidator(dbRequest))
{
dbRequest.State = PermissionState.Granted;
}
}
}
return(dbRequest);
}
public DynDatabaseRequest Process(dynamic args, dynamic query, DatabaseAction dbAction)
{
// Read basic parameters
var path = (string)args.path ?? ""; // null paths aren't valid
var databaseId = (string)args.dbid; // database ID is required!
var authItem = (string)query.auth;
// Create request shell
// Add trailing slash
if (path.Length > 1 && !path.EndsWith("/", StringComparison.Ordinal))
{
path += "/";
}
var dbRequest = new DynDatabaseRequest
{
AuthToken = authItem,
Path = path,
DatabaseId = databaseId,
Valid = databaseId != null,
State = PermissionState.Denied,
RequestedAction = dbAction
};
return(ValidateAccess(dbRequest));
}
/// <summary>
/// Used to validate additional security rules in the post-processing stage (key-specific rules for example)
/// </summary>
/// <returns></returns>
public DynDatabaseRequest ValidateAdditionalRules(DynDatabaseRequest dbRequest, IEnumerable <SecurityRule> rules)
{
// Rules are sorted in ascending priority order
foreach (var rule in rules.OrderBy(x => x.Priority))
{
if (rule.PathRegex.Match($"/{dbRequest.Path}").Success)
{
if (rule.Actions.HasFlag(dbRequest.RequestedAction))
{
dbRequest.State = rule.Allow ? PermissionState.Granted : PermissionState.Denied;
break;
}
}
}
return(dbRequest);
}