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FLocal/IISMainHandler/handlers/request/AbstractPostHandler.cs

71 lines
1.9 KiB

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using FLocal.Core;
using FLocal.Common;
namespace FLocal.IISHandler.handlers.request {
abstract class AbstractPostHandler : ISpecificHandler {
abstract protected string templateName {
get;
}
virtual protected bool shouldBeLoggedIn {
get {
return true;
}
}
virtual protected bool shouldBeGuest {
get {
return false;
}
}
abstract protected XElement[] Do(WebContext context);
protected IEnumerable<XElement> getCommonData(WebContext context) {
return new XElement[] {
new XElement("handlerName", this.GetType().FullName),
new XElement("title", Config.instance.AppInfo),
new XElement("timestamp", DateTime.Now.Ticks.ToString()),
context.userSettings.skin.exportToXml(),
context.exportSession(),
};
}
private XDocument getData(WebContext context) {
return new XDocument(
new XElement("root",
this.Do(context),
this.getCommonData(context)
)
);
}
public void Handle(WebContext context) {
try {
Uri referer = context.httprequest.UrlReferrer;
if(referer == null || referer.Host != context.httprequest.Url.Host) {
throw new System.Web.HttpException(403, "Wrong referer");
}
if(this.shouldBeGuest && context.session != null) throw new FLocalException("Should be guest");
if(this.shouldBeLoggedIn && context.session == null) throw new FLocalException("Should be anonymous");
context.WriteTransformResult(this.templateName, this.getData(context));
} catch(RedirectException) {
throw;
} catch(WrongUrlException) {
throw;
} catch(Exception e) {
context.LogError(e);
context.WriteTransformResult("Exception.xslt", new XDocument(new XElement("root", this.getCommonData(context), e.ToXml())));
}
}
}
}