X-Git-Url: http://pere.pagekite.me/gitweb/homepage.git/blobdiff_plain/8e167f249dd4b19cda439a325a53ac7bf3bb5172..aafeae8b09742c9d300a1ffc222093abff86f970:/blog/index.rss diff --git a/blog/index.rss b/blog/index.rss index 868adb561c..64c53fe0c4 100644 --- a/blog/index.rss +++ b/blog/index.rss @@ -6,6 +6,205 @@ https://people.skolelinux.org/pere/blog/ + + «Virkninger av angrefristloven», hovedfagsoppgaven som fikk endret en lov + https://people.skolelinux.org/pere/blog/_Virkninger_av_angrefristloven___hovedfagsoppgaven_som_fikk_endret_en_lov.html + https://people.skolelinux.org/pere/blog/_Virkninger_av_angrefristloven___hovedfagsoppgaven_som_fikk_endret_en_lov.html + Sun, 29 Oct 2023 22:00:00 +0100 + <img src="http://people.skolelinux.org/pere/blog/images/2023-10-29-bok-angrefrist.svg" width="20%" align="center"></a> + +<p>I 1979 leverte Ole-Erik Yrvin en hovedfagsoppgave for Cand. Scient. + ved Institutt for sosiologi på Universitetet i Oslo på oppdrag fra + Forbruker- og administrasjonsdepartementet. Oppgaven evaluerte + Angrefristloven fra 1972, og det han oppdaget førte til at loven ble + endret fire år senere.</p> + +<p>Jeg har kjent Ole-Erik en stund, og synes det var trist at hans + oppgave ikke lenger er tilgjengelig, hverken fra oppdragsgiver + eller fra universitetet. Hans forsøk på å få den avbildet og lagt + ut på Internett har vist seg fånyttes, så derfor tilbød jeg meg for + en stund tilbake å publisere den og gjøre den tilgjengelig med + fribruksvilkår på Internett. Det er nå klart, og hovedfagsoppgaven + er tilgjengelig blant annet via <a + href="http://www.hungry.com/~pere/publisher/">min liste over + publiserte bøker</a>, både som nettside, + <a href="https://www.lulu.com/search?contributor=Ole-Erik+Yrvin">digital + bok i ePub-format og på papir fra lulu.com</a>. Jeg regner med at + den også vil dukke opp på nettbokhandlere i løpet av en måned eller + to.</p> + +<p>Alle tabeller og figurer er gjenskapt for bedre lesbarhet, noen + skrivefeil rettet opp og mange referanser har fått flere detaljer + som ISBN-nummer og DOI-referanse. Selv om jeg ikke regner med at + dette blir en kioskvelter, så håper jeg denne nye utgaven kan komme + fremtiden til glede.</p> + +<p>Som vanlig, hvis du bruker Bitcoin og ønsker å vise din støtte til +det jeg driver med, setter jeg pris på om du sender Bitcoin-donasjoner +til min adresse +<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>. Merk, +betaling med bitcoin er ikke anonymt. :)</p> + + + + + «underordnet tjenestemann blir inhabil fordi en overordnet er inhabil». + https://people.skolelinux.org/pere/blog/_underordnet_tjenestemann_blir_inhabil_fordi_en_overordnet_er_inhabil__.html + https://people.skolelinux.org/pere/blog/_underordnet_tjenestemann_blir_inhabil_fordi_en_overordnet_er_inhabil__.html + Thu, 7 Sep 2023 09:10:00 +0200 + <p>Medlemmene av Norges regjering har demonstert de siste månedene at +habilitetsvureringer ikke er deres sterke side og det gjelder både +Arbeiderpartiets og Senterpartiers representater. Det er heldigvis +enklere i det private, da inhabilitetsreglene kun gjelder de som +jobber for folket, ikke seg selv. Sist ut er utenriksminister +Huitfeldt. I går kom nyheten om at +<a href="https://www.nrk.no/nyheter/riksadvokaten_-okokrim-nestsjef-kan-behandle-huitfeldt-saken-1.16545162">Riksadvokaten +har konkludert med at nestsjefen i Økokrim kan behandle sak om +habilitet og innsidekunnskap</a> for Huitfeldt, på tross av at hans +overordnede, sjefen for Økokrim, har meldt seg inhabil i saken. Dette +er litt rart. I veilednigen +«<a href="https://www.regjeringen.no/globalassets/upload/krd/vedlegg/komm/veiledere/habilitet_i_kommuner_og_fylkeskommuner.pdf">Habilitet +i kommuner og fylkeskommuner</a>» av Kommunal- og regionaldepartementet +forteller de hva som gjelder, riktig nok gjelder veiledningen ikke for +Økokrim som jo ikke er kommune eller fylkeskommune, men jeg får ikke +inntrykk av at dette er regler som kun gjelder for kommune og +fylkeskommune: + +<blockquote> +<p>«<strong>2.1 Oversikt over inhabilitetsgrunnlagene</strong> + +<p>De alminnelige reglene om inhabilitet for den offentlige +forvaltningen er gitt i +<a href="https://lovdata.no/dokument/NL/lov/1967-02-10/KAPITTEL_2#KAPITTEL_2">forvaltningsloven +§§ 6 til 10</a>. Forvaltningslovens hovedregel om inhabilitet framgår +av § 6. Her er det gitt tre ulike grunnlag som kan føre til at en +tjenestemann eller folkevalgt blir inhabil. I § 6 første ledd +bokstavene a til e er det oppstilt konkrete tilknytningsforhold mellom +tjenestemannen og saken eller sakens parter som automatisk fører til +inhabilitet. Annet ledd oppstiller en skjønnsmessig regel om at +tjenestemannen også kan bli inhabil etter en konkret vurdering av +inhabilitetsspørsmålet, der en lang rekke momenter kan være +relevante. I tredje ledd er det regler om såkalt avledet +inhabilitet. Det vil si at en underordnet tjenestemann blir inhabil +fordi en overordnet er inhabil.»</p> +</blockquote> + +<p>Loven sier ganske enkelt «Er den overordnede tjenestemann ugild, +kan avgjørelse i saken heller ikke treffes av en direkte underordnet +tjenestemann i samme forvaltningsorgan.» Jeg antar tanken er at en +underordnet vil stå i fare for å tilpasse sine konklusjoner til det +overordnet vil ha fordel av, for å fortsatt ha et godt forhold til sin +overordnede. Men jeg er ikke jurist og forstår nok ikke kompliserte +juridiske vurderinger. For å sitere «Kamerat Napoleon» av George +Orwell: «Alle dyr er like, men noen dyr er likere enn andre». + + + + + Invidious add-on for Kodi 20 + https://people.skolelinux.org/pere/blog/Invidious_add_on_for_Kodi_20.html + https://people.skolelinux.org/pere/blog/Invidious_add_on_for_Kodi_20.html + Thu, 10 Aug 2023 19:50:00 +0200 + <p>I still enjoy <a href="https://kodi.tv/">Kodi</a> and +<a href="https://libreelec.tv/">LibreELEC</a> as my multimedia center +at home. Sadly two of the services I really would like to use from +within Kodi are not easily available. The most wanted add-on would be +one making <a href="https://archive.org/">The Internet Archive</a> +available, and it has +<a href="https://kodi.wiki/view/Add-on:Internet_Archive">not been +working</a> for many years. The second most wanted add-on is one +using <a href="https://invidious.io/">the Invidious privacy enhanced +Youtube frontent</a>. A plugin for this has been partly working, but +not been kept up to date in the Kodi add-on repository, and its +upstream seem to have given it up in April this year, when the git +repository was closed. A few days ago I got tired of this sad state +of affairs and decided to +<a href="https://github.com/petterreinholdtsen/kodi-invidious-plugin">have +a go at improving the Invidious add-on</a>. As +<a href="https://github.com/iv-org/invidious/issues/3872">Google has +already attacked</a> the Invidious concept, so it need all the support +if can get. My small contribution here is to improve the service +status on Kodi.</p> + +<p>I added support to the Invidious add-on for automatically picking a +working Invidious instance, instead of requiring the user to specify +the URL to a specific instance after installation. I also had a look +at the set of patches floating around in the various forks on github, +and decided to clean up at least some of the features I liked and +integrate them into my new release branch. Now the plugin can handle +channel and short video items in search results. Earlier it could +only handle single video instances in the search response. I also +brushed up the set of metadata displayed a bit, but hope I can figure +out how to get more relevant metadata displayed.</p> + +<p>Because I only use Kodi 20 myself, I only test on version 20 and am +only motivated to ensure version 20 is working. Because of API changes +between version 19 and 20, I suspect it will fail with earlier Kodi +versions.</p> + +<p>I already +<a href="https://github.com/xbmc/repo-plugins/pull/4363">asked to have +the add-on added</a> to the official Kodi 20 repository, and is +waiting to heard back from the repo maintainers.</p> + +<p>As usual, if you use Bitcoin and want to show your support of my +activities, please send Bitcoin donations to my address +<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p> + + + + + What did I learn from OpenSnitch this summer? + https://people.skolelinux.org/pere/blog/What_did_I_learn_from_OpenSnitch_this_summer_.html + https://people.skolelinux.org/pere/blog/What_did_I_learn_from_OpenSnitch_this_summer_.html + Sun, 11 Jun 2023 08:30:00 +0200 + <p>With yesterdays +<a href="https://www.debian.org/News/2023/20230610">release of Debian +12 Bookworm</a>, I am happy to know the +<a href="https://tracker.debian.org/pkg/opensnitch">the interactive +application firewall OpenSnitch</a> is available for a wider audience. +I have been running it for a few weeks now, and have been surprised +about some of the programs connecting to the Internet. Some programs +are obviously calling out from my machine, like the NTP network based +clock adjusting system and Tor to reach other Tor clients, but others +were more dubious. For example, the KDE Window manager try to look up +the host name in DNS, for no apparent reason, but if this lookup is +blocked the KDE desktop get periodically stuck when I use it. Another +surprise was how much Firefox call home directly to mozilla.com, +mozilla.net and googleapis.com, to mention a few, when I visit other +web pages. This direct connection happen even if I told Firefox to +always use a proxy, and the proxy setting is ignored for this traffic. +Other surprising connections come from audacity and dirmngr (I do not +use Gnome). It took some trial and error to get a good default set of +permissions. Without it, I would get popups asking for permissions at +any time, also the most inconvenient ones where I am in the middle of +a time sensitive gaming session.</p> + +<p>I suspect some application developers should rethink when then need +to use network connections or DNS lookups, and recommend testing +OpenSnitch (only <tt>apt install opensnitch</tt> away in Debian +Bookworm) to locate and report any surprising Internet connections on +your desktop machine.</p> + +<p>At the moment the upstream developer and Debian package maintainer +is working on making the system more reliable in Debian, by enabling +the eBPF kernel module to track processes and connections instead of +depending in content in /proc/. This should enter unstable fairly +soon.</p> + +<p>As usual, if you use Bitcoin and want to show your support of my +activities, please send Bitcoin donations to my address +<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p> + +<p><strong>Update 2023-06-12</strong>: I got a tip about +<a href="https://wiki.debian.org/PrivacyIssues">a list of privacy +issues in Free Software</a> and the +<a href="irc://irc.debian.org/%23debian-privacy">#debian-privacy IRC +channel</a> discussing these topics.</p> + + + + wmbusmeters, parse data from your utility meter - nice free software https://people.skolelinux.org/pere/blog/wmbusmeters__parse_data_from_your_utility_meter___nice_free_software.html @@ -381,214 +580,6 @@ package. It would be great if someone could provide some clues how to build eBPF modules on build daemons in Debian, possibly without the full kernel source.</p> -<p>As usual, if you use Bitcoin and want to show your support of my -activities, please send Bitcoin donations to my address -<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p> - - - - - Is the desktop recommending your program for opening its files? - https://people.skolelinux.org/pere/blog/Is_the_desktop_recommending_your_program_for_opening_its_files_.html - https://people.skolelinux.org/pere/blog/Is_the_desktop_recommending_your_program_for_opening_its_files_.html - Sun, 29 Jan 2023 11:00:00 +0100 - <p>Linux desktop systems -<a href="https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html">have -standardized</a> how programs present themselves to the desktop -system. If a package include a .desktop file in -/usr/share/applications/, Gnome, KDE, LXDE, Xfce and the other desktop -environments will pick up the file and use its content to generate the -menu of available programs in the system. A lesser known fact is that -a package can also explain to the desktop system how to recognize the -files created by the program in question, and use it to open these -files on request, for example via a GUI file browser.</p> - -<p>A while back I ran into a package that did not tell the desktop -system how to recognize its files and was not used to open its files -in the file browser and fixed it. In the process I wrote a simple -debian/tests/ script to ensure the setup keep working. It might be -useful for other packages too, to ensure any future version of the -package keep handling its own files.</p> - -<p>For this to work the file format need a useful MIME type that can -be used to identify the format. If the file format do not yet have a -MIME type, it should define one and preferably also -<a href="https://www.iana.org/assignments/media-types/media-types.xhtml">register -it with IANA</a> to ensure the MIME type string is reserved.</p> - -<p>The script uses the <tt>xdg-mime</tt> program from xdg-utils to -query the database of standardized package information and ensure it -return sensible values. It also need the location of an example file -for xdg-mime to guess the format of.</p> - -<pre> -#!/bin/sh -# -# Author: Petter Reinholdtsen -# License: GPL v2 or later at your choice. -# -# Validate the MIME setup, making sure motor types have -# application/vnd.openmotor+yaml associated with them and is connected -# to the openmotor desktop file. - -retval=0 - -mimetype="application/vnd.openmotor+yaml" -testfile="test/data/real/o3100/motor.ric" -mydesktopfile="openmotor.desktop" - -filemime="$(xdg-mime query filetype "$testfile")" - -if [ "$mimetype" != "$filemime" ] ; then - retval=1 - echo "error: xdg-mime claim motor file MIME type is $filemine, not $mimetype" -else - echo "success: xdg-mime report correct mime type $mimetype for motor file" -fi - -desktop=$(xdg-mime query default "$mimetype") - -if [ "$mydesktopfile" != "$desktop" ]; then - retval=1 - echo "error: xdg-mime claim motor file should be handled by $desktop, not $mydesktopfile" -else - echo "success: xdg-mime agree motor file should be handled by $mydesktopfile" -fi - -exit $retval -</pre> - -<p>It is a simple way to ensure your users are not very surprised when -they try to open one of your file formats in their file browser.</p> - -<p>As usual, if you use Bitcoin and want to show your support of my -activities, please send Bitcoin donations to my address -<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p> - - - - - Opensnitch, the application level interactive firewall, heading into the Debian archive - https://people.skolelinux.org/pere/blog/Opensnitch__the_application_level_interactive_firewall__heading_into_the_Debian_archive.html - https://people.skolelinux.org/pere/blog/Opensnitch__the_application_level_interactive_firewall__heading_into_the_Debian_archive.html - Sun, 22 Jan 2023 23:55:00 +0100 - <p>While reading a -<a href="https://sneak.berlin/20230115/macos-scans-your-local-files-now/">blog -post claiming MacOS X recently started scanning local files and -reporting information about them to Apple</a>, even on a machine where -all such callback features had been disabled, I came across a -description of the Little Snitch application for MacOS X. It seemed -like a very nice tool to have in the tool box, and I decided to see if -something similar was available for Linux.</p> - -<p>It did not take long to find -<a href="https://github.com/evilsocket/opensnitch">the OpenSnitch -package</a>, which has been in development since 2017, and now is in -version 1.5.0. It has had a -<a href="https://bugs.debian.org/909567">request for Debian -packaging</a> since 2018, but no-one completed the job so far. Just -for fun, I decided to see if I could help, and I was very happy to -discover that -<a href="https://github.com/evilsocket/opensnitch/issues/304">upstream -want a Debian package too</a>.</p> - -<p>After struggling a bit with getting the program to run, figuring -out building Go programs (and a little failed detour to look at eBPF -builds too - help needed), I am very happy to report that I am -sponsoring upstream to maintain the package in Debian, and it has -since this morning been waiting in NEW for the ftpmasters to have a -look. Perhaps it can get into the archive in time for the Bookworm -release?</p> - -<p>As usual, if you use Bitcoin and want to show your support of my -activities, please send Bitcoin donations to my address -<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p> - - - - - LinuxCNC MQTT publisher component - https://people.skolelinux.org/pere/blog/LinuxCNC_MQTT_publisher_component.html - https://people.skolelinux.org/pere/blog/LinuxCNC_MQTT_publisher_component.html - Sun, 8 Jan 2023 19:30:00 +0100 - <p>I watched <a href="https://yewtu.be/watch?v=jmKUV3aNLjk">a 2015 -video from Andreas Schiffler</a> the other day, where he set up -<a href="https://linuxcnc.org/">LinuxCNC</a> to send status -information to the MQTT broker IBM Bluemix. As I also use MQTT for -graphing, it occured to me that a generic MQTT LinuxCNC component -would be useful and I set out to implement it. Today I got the first -draft limping along and submitted as -<a href="https://github.com/LinuxCNC/linuxcnc/pull/2253">a patch to the -LinuxCNC project</a>.</p> - -<p>The simple part was setting up the MQTT publishing code in Python. -I already have set up other parts submitting data to my Mosquito MQTT -broker, so I could reuse that code. Writing a LinuxCNC component in -Python as new to me, but using existing examples in the code -repository and the extensive documentation, this was fairly straight -forward. The hardest part was creating a automated test for the -component to ensure it was working. Testing it in a simulated -LinuxCNC machine proved very useful, as I discovered features I needed -that I had not thought of yet, and adjusted the code quite a bit to -make it easier to test without a operational MQTT broker -available.</p> - -<p>The draft is ready and working, but I am unsure which LinuxCNC HAL -pins I should collect and publish by default (in other words, the -default set of information pieces published), and how to get the -machine name from the LinuxCNC INI file. The latter is a minor -detail, but I expect it would be useful in a setup with several -machines available. I am hoping for feedback from the experienced -LinuxCNC developers and users, to make the component even better -before it can go into the mainland LinuxCNC code base.</p> - -<p>Since I started on the MQTT component, I came across -<a href="https://yewtu.be/watch?v=Bqa2grG0XtA">another video from Kent -VanderVelden</a> where he combine LinuxCNC with a set of screen glasses -controlled by a Raspberry Pi, and it occured to me that it would -be useful for such use cases if LinuxCNC also provided a REST API for -querying its status. I hope to start on such component once the MQTT -component is working well.</p> - -<p>As usual, if you use Bitcoin and want to show your support of my -activities, please send Bitcoin donations to my address -<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p> - - - - - ONVIF IP camera management tool finally in Debian - https://people.skolelinux.org/pere/blog/ONVIF_IP_camera_management_tool_finally_in_Debian.html - https://people.skolelinux.org/pere/blog/ONVIF_IP_camera_management_tool_finally_in_Debian.html - Sat, 24 Dec 2022 08:00:00 +0100 - <p>Merry Christmas to you all. Here is a small gift to all those with -IP cameras following the <a href="https://www.onvif.org/">ONVIF -specification</a>. There is finally a nice command line and GUI tool -in Debian to manage ONVIF IP cameras. After working with upstream for -a few months and sponsoring the upload, I am very happy to report that -the <a href="https://tracker.debian.org/libonvif">libonvif package</a> -entered Debian Sid last night.</p> - -<p>The package provide a C library to communicate with such cameras, a -command line tool to locate and update settings of (like password) the -cameras and a GUI tool to configure and control the units as well as -preview the video from the camera. Libonvif is available on Both -Linux and Windows and the GUI tool uses the Qt library. The main -competitors are non-free software, while libonvif is GNU GPL licensed. -I am very glad Debian users in the future can control their cameras -using a free software system provided by Debian. But the ONVIF world -is full of slightly broken firmware, where the cameras pretend to -follow the ONVIF specification but fail to set some configuration -values or refuse to provide video to more than one recipient at the -time, and the onvif project is quite young and might take a while -before it completely work with your camera. Upstream seem eager to -improve the library, so handling any broken camera might be just <a -href="https://github.com/sr99622/libonvif/">a bug report away</a>.</p> - -<p>The package just cleared NEW, and need a new source only upload -before it can enter testing. This will happen in the next few -days.</p> - <p>As usual, if you use Bitcoin and want to show your support of my activities, please send Bitcoin donations to my address <b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>