a cosmological pedestrian
Development / KDE / Linux
I’m working on different Open Source projects and most of them have different coding style guidelines. Mostly spaces or tabs or different tabwidth. The easiest thing would be to store these information in the git config of the project. So here is a easy and secure way to have modelines in the git config. So first I set the modelines (here for the Samba project):...
Development / KDE / Linux
I’m a big fan of unit testing frameworks. When I developed csync, a bidirectional file synchronizer, I used check to write unit tests from the start. check was ok, but it were running valgrind on your testcases to find memleaks in your code the mode reports were about check. So I needed to add valgrind suppressions to get rid of them. When I started to...
Development / Linux / Samba
I recently fixed a bug resolving Domain Local groups in Winbind. I was asked how to reproduce it with a more complex setup, so I had to dig through the Winbind code to understand everything in more detail. I have documented my findings here, in order to retain what I’ve learned and to help others understand how Winbind works. The Setup We have a forest...
Back to these bad GPS fixes for Android spread all over the net. This time I will describe how to find out which is the correct SSL root certificate you need and how to create it. So first we need know the root certificate the Google SUPL server has been signed. There are several ways but we use the easiest. Connect with the openssl binary...
There are a lot of people around providing gps fixes for Android. Most of them don’t really help at all. I want to explain here what variables the code recognizes and what they do. The other thing is SuplCert which is the certificate to verify the ssl connection for the supl server. Most of the time poeple provide the wrong certificate. gps.conf There are two...
Maybe you already know that I worked since January 2012 on porting CM9 to the HTC Wildfire S (Marvel). It took quite a while to figure out how Android is working and how to get the the OS correctly talking with the hardware. Today I’ve released ALPHA3 of my work which is a pretty stable version. The Wildfire S is not a supported Android 4.0...
I’ve had the problem that the device didn’t want to switch into deep sleep mode if radio was on. What is deep sleep? To make it simple we break it down. Your device has 3 modes. The fisrst is “Screen On and Awake”, “Awake” and “Deep Sleep”. If you use your device it you’re in the first mode and you need a obviously a lot...
If you try to get a new Android version, in this case CyanogenMod9, working on your old phone you have to deal with binary blobs. One of these blobs is the library talking to the radio, libhtc_ril.so. I wanted to document what I learned about libhtc_ril.so. I’ve wanted to get the library version matching my baseband version working with cm9. This resulted it several segfaults....
After Qualcom released new graphic blobs for ARMv6 I was able to get CyanogenMod 9 working on my HTC Wildfire S pretty well. There are still some problem which need to be fixed. GPS isn’t working, if you have GSM/3G turned on the battery drains pretty fast. I’m currently trying to get the camera working. There is also a wakelock bug with bluetooth in the...
I’ll show you how to to synchronise files of two different directories in a terminal using a mighty automator. The tool is called csync and is a client side file synchronizer. Unless like rsync it syncs in two directions so that the contents are equal as soon as it finished. Here is the simple example of syncing two folders from terminal: csync /path/to/folder1 /path/to/folder2 If...