TechScreen Revised

Challange III

HTML5 has introduced contenteditable attribute. This attribute specifies whether the content of an element is editable or not. How to make svg text editable? To put html elements in an svg element, we need to use <foreignObject>. Within that object we can add any html element, for example div that has attribute contenteditable. The problem is that we want svg text to be editable, and not div. Solution is to add svg elements inside contenteditable div. When the contenteditable attribute is not set on an element, the element will inherit it from its parent.

I had a task to build an online editor for creating graphic content, like visit cards. I chose to work with svg. All svg elements (e.g. line, rectangle, circle etc.) are positioned in a parent component with x and y attributes (like in a coordinate system). I wanted to have a text element with a rectangle around it which indicates that the text is in edit mode. In order to position the text inside the rectangle, I had to calculate x and y values.

Working on an assignment for a Digital Forensics course, I had to open some TrueCrypt container. In order to do so, I downloaded TrueCrypt zip and extracted it. The version I downloaded was 7.2. I then proceeded to install it, but I got an error saying: “TrueCrypt requires MAC OS X 10.4 or later”. Just to be sure, I checked my MAC OS version - it was 10.14.0. Apparently, the logic condition that tests the OS version was not correct and I found myself unable to install TrueCrypt.

I want to copy a text from a Rich Text source (like PDF, Word document, Notes taking app, etc), but without the formatting, so I can copy-paste like normal text.
 Most of the time when I copy text from PDF, it is copied with a lot if new lines, but I want to just make a list of technologies or quotes to use in my articles/documents. What is nice and quick way to copy formatted and paste as unformatted text, when there is no such option in the context menu?

A Java Spring Boot powered REST Api has operations, which require minutes to finish, because of multiple HTTP connections and database queries with lots of data. These tasks are executed Asynchronously. 
The functionality needs to be tested in the integration tests (using less data, so the operation runs in seconds). Now we use Thread.sleep(…) and the tests take 10minutes to finish every time, while we see the operations finished sometimes for 2-3 seconds and the overall required time would be 5minutes.

The application to test uses Postgres and RabbitMQ. It also uses “spring-boot-starter-amqp” and its “RabbitTemplate”. The app runs migrations with Flyway and uses Postgres syntax. Because of inconvenience and since there is CI (Continuous Integration) in a remote server, running RabbitMQ and Postgres instances can’t be provided. How can we set up our test environment to provide those RabbitMQ and Postgres DB instances, so it is clean on each test suite run?

A friend developed an application, that was protected by a license key. Since I was curious how he implemented the key-checking and the application overall I decided to hack the app and write a key generator to use the app. The application was written in java, I looked out for a java decompiler and finally used the „java decompiler“ application. As a result I had a lot of java files. The only problem is, that the naming wasn’t useful at all. For example „class a“ doesn’t say anything about the class. So it took me a while to understand the main parts of the code.

I had an pdf with about 1000 Sites consisting only of tables. To navigate and find something in this Document wasn’t that easy. This leads me to develop a web application that should represent the data in a more pleasant way. First I had to analyze the PDF Document, there are several different pdf versions and standards, the second thing that have to be checks is the structure of the document. For example the document could consists of only pictures, which would make the task harder, since there is no text. In my case the pdf structure was straight forward and consists of text boxes.

To secure the private home network, especially create a guest network and a private one, I used raspberry pi. The private network must be protected better, because of devices like computer, NAS, ect… . The raspberry is equipped with an additional lan port (usb to lan) and an additional w-lan card for a better signal. The first lan port is connected with the router of the ISP and the second one with the local private network. After that the routing is made (IP Tables) so that the internet is forwarded to the private network.