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Current blog entries

2018-04-06 | JavaEE |

PrimeFaces Expression Language Remote Code Execution Fix

This post describes how to fix the PrimeFaces Expression Language Remote Code Execution bug (CVE-2017-1000486) when an update to the latest / fixed PrimeFaces version is not easily possible. This solution also needs no patching of the PrimeFaces library itself. The preferred /… more

2018-03-12 | Angular |

Angular 5 HttpClient File Download with Authentication

This article describes how a typical browser file download can be triggered using the Angular HttpClient. Typically you can simply introduce a link to the endpoint of the file download into the page and this will work just fine. However, if you… more

2018-02-21 | Angular |

Angular 5 HttpInterceptor – Add Bearer Token to HttpClient Requests

In this article I will describe how to add a Http Authentication Bearer token to each request done from Angular via HttpClient by implementing a Angular 5 HttpInterceptor. This way the bearer token has not be added to each request separately while doing… more

2017-11-20 | JavaScript |

Aurelia – validation of dependent inputs

Form validation in Aurelia is actually pretty nice. You can configure the validation rules in a chainable api and add multiple rules to single fields. However there is a problem if you want to trigger the validation of an input when another… more

2017-11-18 | Linux |

Changing the Timezone in Debian 9 (Stretch)

Since the release of the newest Debian version 9 (Codename “Stretch”) in June 2017, most system administrators using this distribution will upgrade their systems eventually. One of the changes in the new version that first caught my eye, is that you can’t… more

2017-10-10 | ASP .NET |

ASP.NET Core 2.0 Disable Authentication in Development Environment

This article describes how to disable authentication for ASP.NET Core 2.0. ASP.NET Core JWT Authentication I have some Rest API which I want to protect via JwtBearer token in production e.g.

  However in order to test the API, for development I… more

2017-08-10 | Java |

JSF ViewState Hack Attempt: java.lang.StringIndexOutOfBoundsException: String index out of range: -1 – com.sun.faces.renderkit.ServerSideStateHelper.getState (ServerSideStateHelper.java:313)

Hack Attempt on JSF ViewState This article explains why the error java.lang.StringIndexOutOfBoundsException: String index out of range: -1 in the class ServerSideStateHelper in the method getState (313) might be someone trying to hack your application server. It is getting quite technical in here… but… more

2016-11-01 | Angular |

Angular2 Internationalization (i18n)

When you build frontend interfaces for the web, you often have to provide support for different languages, locales and timezones (generally called internationalization or short i18n in computer science). With Angular2 you can use the module “ng2-translate” to provide browser language detection… more

2016-08-01 | Java |

WildFly 10 with Apache and AJP

This article demonstrates how inbound request from a webserver (Apache) can be proxied to an application server (WildFly 10) using the Apache JServ Protocol (AJP). For more information on what AJP actually is, take a look at https://en.wikipedia.org/wiki/Apache_JServ_Protocol . WildFly 10 Configuration First you have to add… more

2016-07-21 | General |

illucIT Software on Maven Central

We have decided now to publish our free Software package on Maven Central under the namespace “com.illucit“. This way the packages can be used by everyone without having to declare a separate repository in Maven or SBT. This software packages also contain… more