bool IRequestTransform.Transform(IRequestContext context)
{
if (_rules == null)
{
return(false);
}
if (_incoming)
{
context.Log?.Log(LogType.Logic, LogLevel.Standard, () => "Executing URL rewrite script on incoming request");
var ruleContext = (IRuleExecutionContext) new IncomingContext(context);
var ruleResult = _rules.Evaluate(ruleContext);
if (ruleResult.EndRequest)
{
return(true);
}
if (ruleContext.UrlIsModified)
{
context.Incoming.Path = new PathString(ruleContext.NewPathString);
context.Incoming.Query = new QueryString(ruleContext.NewParametersString);
context.Incoming.DomainName = ruleContext.NewHost;
}
}
else
{
var ruleContext = (IRuleExecutionContext) new OutgoingContext(context);
context.Outgoing.OnSendHeaders.Add(ctx =>
{
context.Log?.Log(LogType.Logic, LogLevel.Standard, () => "Executing URL rewrite script on outgoing response");
_rules.Evaluate(ruleContext);
});
}
return(false);
}
private void OnBeginRequest(object source, EventArgs args)
{
var rules = _rules;
if (rules == null)
{
return;
}
var application = (HttpApplication)source;
var context = application.Context;
var requestInfo = _factory.Create <IRequestInfo>().Initialize(application, _log);
try
{
#if !TRACE_ALL
if (_tracingEnabled &&
_forwardTracePredicate != null &&
_forwardTracePredicate(context.Request.RawUrl))
{
#endif
requestInfo.ExecutionMode = ExecutionMode.ExecuteAndTrace;
requestInfo.Log.TraceRequestBegin(requestInfo);
#if !TRACE_ALL
}
#endif
var ruleListResult = _rules.Evaluate(requestInfo);
#if !TRACE_ALL
if (_tracingEnabled &&
requestInfo.ExecutionMode == ExecutionMode.ExecuteOnly &&
_reverseTracePredicate != null)
{
var newPath = "/";
if (requestInfo.NewPath != null && requestInfo.NewPath.Count > 0)
{
newPath = string.Join("/", requestInfo.NewPath).ToLower();
}
if (_reverseTracePredicate(newPath))
{
requestInfo.ExecutionMode = ExecutionMode.TraceOnly;
requestInfo.Log.TraceRequestBegin(requestInfo);
_rules.Evaluate(requestInfo);
}
}
#endif
if (requestInfo.ExecutionMode != ExecutionMode.ExecuteOnly)
{
requestInfo.Log.TraceRequestEnd(requestInfo);
}
requestInfo.ExecuteDeferredActions();
if (ruleListResult.EndRequest)
{
application.CompleteRequest();
}
else if (requestInfo.UrlIsModified)
{
requestInfo.Context.RewritePath(requestInfo.NewPathString, "", requestInfo.NewParametersString);
}
}
catch (ThreadAbortException)
{
}
catch (Exception ex)
{
_log.LogException(requestInfo, ex);
}
}
