private void ParseUrlAction(XElement urlAction, UrlRewriteRuleBuilder builder, bool stopProcessing)
{
var actionType = ParseEnum(urlAction, RewriteTags.Type, ActionType.None);
UrlAction action;
switch (actionType)
{
case ActionType.None:
action = new NoneAction(stopProcessing ? RuleResult.SkipRemainingRules : RuleResult.ContinueRules);
break;
case ActionType.Rewrite:
case ActionType.Redirect:
var url = string.Empty;
if (urlAction.Attribute(RewriteTags.Url) != null)
{
url = urlAction.Attribute(RewriteTags.Url) !.Value;
if (string.IsNullOrEmpty(url))
{
throw new InvalidUrlRewriteFormatException(urlAction, "Url attribute cannot contain an empty string");
}
}
var urlPattern = _inputParser.ParseInputString(url, builder.UriMatchPart);
var appendQuery = ParseBool(urlAction, RewriteTags.AppendQueryString, defaultValue: true);
if (actionType == ActionType.Rewrite)
{
action = new RewriteAction(stopProcessing ? RuleResult.SkipRemainingRules : RuleResult.ContinueRules, urlPattern, appendQuery);
}
else
{
var redirectType = ParseEnum(urlAction, RewriteTags.RedirectType, RedirectType.Permanent);
action = new RedirectAction((int)redirectType, urlPattern, appendQuery, !appendQuery, escapeBackReferences: false);
}
break;
case ActionType.AbortRequest:
action = new AbortAction();
break;
case ActionType.CustomResponse:
int statusCode;
if (!int.TryParse(urlAction.Attribute(RewriteTags.StatusCode)?.Value, NumberStyles.None, CultureInfo.InvariantCulture, out statusCode))
{
throw new InvalidUrlRewriteFormatException(urlAction, "A valid status code is required");
}
if (statusCode < 200 || statusCode > 999)
{
throw new NotSupportedException("Status codes must be between 200 and 999 (inclusive)");
}
if (!string.IsNullOrEmpty(urlAction.Attribute(RewriteTags.SubStatusCode)?.Value))
{
throw new NotSupportedException("Substatus codes are not supported");
}
var statusReason = urlAction.Attribute(RewriteTags.StatusReason)?.Value;
var statusDescription = urlAction.Attribute(RewriteTags.StatusDescription)?.Value;
action = new CustomResponseAction(statusCode)
{
StatusReason = statusReason, StatusDescription = statusDescription
};
break;
default:
throw new NotSupportedException($"The action type {actionType} wasn't recognized");
}
builder.AddUrlAction(action);
}
