<atom:link href="http://people.skolelinux.org/pere/blog/index.rss" rel="self" type="application/rss+xml" />
<item>
- <title>Unlimited randomness with the ChaosKey?</title>
- <link>http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html</guid>
- <pubDate>Wed, 1 Mar 2017 20:50:00 +0100</pubDate>
- <description><p>A few days ago I ordered a small batch of
-<a href="http://altusmetrum.org/ChaosKey/">the ChaosKey</a>, a small
-USB dongle for generating entropy created by Bdale Garbee and Keith
-Packard. Yesterday it arrived, and I am very happy to report that it
-work great! According to its designers, to get it to work out of the
-box, you need the Linux kernel version 4.1 or later. I tested on a
-Debian Stretch machine (kernel version 4.9), and there it worked just
-fine, increasing the available entropy very quickly. I wrote a small
-test oneliner to test. It first print the current entropy level,
-drain /dev/random, and then print the entropy level for five seconds.
-Here is the situation without the ChaosKey inserted:</p>
-
-<blockquote><pre>
-% cat /proc/sys/kernel/random/entropy_avail; \
- dd bs=1M if=/dev/random of=/dev/null count=1; \
- for n in $(seq 1 5); do \
- cat /proc/sys/kernel/random/entropy_avail; \
- sleep 1; \
- done
-300
-0+1 oppføringer inn
-0+1 oppføringer ut
-28 byte kopiert, 0,000264565 s, 106 kB/s
-4
-8
-12
-17
-21
-%
-</pre></blockquote>
-
-<p>The entropy level increases by 3-4 every second. In such case any
-application requiring random bits (like a HTTPS enabled web server)
-will halt and wait for more entrpy. And here is the situation with
-the ChaosKey inserted:</p>
-
-<blockquote><pre>
-% cat /proc/sys/kernel/random/entropy_avail; \
- dd bs=1M if=/dev/random of=/dev/null count=1; \
- for n in $(seq 1 5); do \
- cat /proc/sys/kernel/random/entropy_avail; \
- sleep 1; \
- done
-1079
-0+1 oppføringer inn
-0+1 oppføringer ut
-104 byte kopiert, 0,000487647 s, 213 kB/s
-433
-1028
-1031
-1035
-1038
-%
-</pre></blockquote>
-
-<p>Quite the difference. :) I bought a few more than I need, in case
-someone want to buy one here in Norway. :)</p>
-
-<p>Update: The dongle was presented at Debconf last year. You might
-find <a href="https://debconf16.debconf.org/talks/94/">the talk
-recording illuminating</a>. It explains exactly what the source of
-randomness is, if you are unable to spot it from the schema drawing
-available from the ChaosKey web site linked at the start of this blog
-post.</p>
+ <title>Software created using taxpayers’ money should be Free Software</title>
+ <link>http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Software_created_using_taxpayers__money_should_be_Free_Software.html</guid>
+ <pubDate>Thu, 30 Aug 2018 13:50:00 +0200</pubDate>
+ <description><p>It might seem obvious that software created using tax money should
+be available for everyone to use and improve. Free Software
+Foundation Europe recentlystarted a campaign to help get more people
+to understand this, and I just signed the petition on
+<a href="https://publiccode.eu/">Public Money, Public Code</a> to help
+them. I hope you too will do the same.</p>
</description>
</item>
<item>
- <title>Detect OOXML files with undefined behaviour?</title>
- <link>http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html</guid>
- <pubDate>Tue, 21 Feb 2017 00:20:00 +0100</pubDate>
- <description><p>I just noticed
-<a href="http://www.arkivrad.no/aktuelt/riksarkivarens-forskrift-pa-horing">the
-new Norwegian proposal for archiving rules in the goverment</a> list
-<a href="http://www.ecma-international.org/publications/standards/Ecma-376.htm">ECMA-376</a>
-/ ISO/IEC 29500 (aka OOXML) as valid formats to put in long term
-storage. Luckily such files will only be accepted based on
-pre-approval from the National Archive. Allowing OOXML files to be
-used for long term storage might seem like a good idea as long as we
-forget that there are plenty of ways for a "valid" OOXML document to
-have content with no defined interpretation in the standard, which
-lead to a question and an idea.</p>
-
-<p>Is there any tool to detect if a OOXML document depend on such
-undefined behaviour? It would be useful for the National Archive (and
-anyone else interested in verifying that a document is well defined)
-to have such tool available when considering to approve the use of
-OOXML. I'm aware of the
-<a href="https://github.com/arlm/officeotron/">officeotron OOXML
-validator</a>, but do not know how complete it is nor if it will
-report use of undefined behaviour. Are there other similar tools
-available? Please send me an email if you know of any such tool.</p>
-</description>
- </item>
-
- <item>
- <title>Ruling ignored our objections to the seizure of popcorn-time.no (#domstolkontroll)</title>
- <link>http://people.skolelinux.org/pere/blog/Ruling_ignored_our_objections_to_the_seizure_of_popcorn_time_no___domstolkontroll_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Ruling_ignored_our_objections_to_the_seizure_of_popcorn_time_no___domstolkontroll_.html</guid>
- <pubDate>Mon, 13 Feb 2017 21:30:00 +0100</pubDate>
- <description><p>A few days ago, we received the ruling from
-<a href="http://people.skolelinux.org/pere/blog/A_day_in_court_challenging_seizure_of_popcorn_time_no_for__domstolkontroll.html">my
-day in court</a>. The case in question is a challenge of the seizure
-of the DNS domain popcorn-time.no. The ruling simply did not mention
-most of our arguments, and seemed to take everything ØKOKRIM said at
-face value, ignoring our demonstration and explanations. But it is
-hard to tell for sure, as we still have not seen most of the documents
-in the case and thus were unprepared and unable to contradict several
-of the claims made in court by the opposition. We are considering an
-appeal, but it is partly a question of funding, as it is costing us
-quite a bit to pay for our lawyer. If you want to help, please
-<a href="http://www.nuug.no/dns-beslag-donasjon.shtml">donate to the
-NUUG defense fund</a>.</p>
-
-<p>The details of the case, as far as we know it, is available in
-Norwegian from
-<a href="https://www.nuug.no/news/tags/dns-domenebeslag/">the NUUG
-blog</a>. This also include
-<a href="https://www.nuug.no/news/Avslag_etter_rettslig_h_ring_om_DNS_beslaget___vurderer_veien_videre.shtml">the
-ruling itself</a>.</p>
+ <title>A bit more on privacy respecting health monitor / fitness tracker</title>
+ <link>http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_bit_more_on_privacy_respecting_health_monitor___fitness_tracker.html</guid>
+ <pubDate>Mon, 13 Aug 2018 09:00:00 +0200</pubDate>
+ <description><p>A few days ago, I wondered if there are any privacy respecting
+health monitors and/or fitness trackers available for sale these days.
+I would like to buy one, but do not want to share my personal data
+with strangers, nor be forced to have a mobile phone to get data out
+of the unit. I've received some ideas, and would like to share them
+with you.
+
+One interesting data point was a pointer to a Free Software app for
+Android named
+<a href="https://github.com/Freeyourgadget/Gadgetbridge/">Gadgetbridge</a>.
+It provide cloudless collection and storing of data from a variety of
+trackers. Its
+<a href="https://github.com/Freeyourgadget/Gadgetbridge/#supported-devices">list
+of supported devices</a> is a good indicator for units where the
+protocol is fairly open, as it is obviously being handled by Free
+Software. Other units are reportedly encrypting the collected
+information with their own public key, making sure only the vendor
+cloud service is able to extract data from the unit. The people
+contacting me about Gadgetbirde said they were using
+<a href="https://us.amazfit.com/shop/bip?variant=336750">Amazfit
+Bip</a> and
+<a href="http://www.xiaomimi6phone.com/xiaomi-mi-band-3-features-release-date-rumors/">Xiaomi
+Band 3</a>.</p>
+
+<p>I also got a suggestion to look at some of the units from Garmin.
+I was told their GPS watches can be connected via USB and show up as a
+USB storage device with
+<a href="https://www.gpsbabel.org/htmldoc-development/fmt_garmin_fit.html">Garmin
+FIT files</a> containing the collected measurements. While
+proprietary, FIT files apparently can be read at least by
+<a href="https://www.gpsbabel.org">GPSBabel</a> and the
+<a href="https://apps.nextcloud.com/apps/gpxpod">GpxPod</a> Nextcloud
+app. It is unclear to me if they can read step count and heart rate
+data. The person I talked to was using a
+<a href="https://buy.garmin.com/en-US/US/p/564291">Garmin Forerunner
+935</a>, which is a fairly expensive unit. I doubt it is worth it for
+a unit where the vendor clearly is trying its best to move from open
+to closed systems. I still remember when Garmin dropped NMEA support
+in its GPSes.</p>
+
+<p>A final idea was to build ones own unit, perhaps by basing it on a
+wearable hardware platforms like
+<a href="https://learn.adafruit.com/flora-geo-watch">the Flora Geo
+Watch</a>. Sound like fun, but I had more money than time to spend on
+the topic, so I suspect it will have to wait for another time.</p>
+
+<p>While I was working on tracking down links, I came across an
+inspiring TED talk by Dave Debronkart about
+<a href="https://archive.org/details/DavedeBronkart_2010X">being a
+e-patient</a>, and discovered the web site
+<a href="https://participatorymedicine.org/epatients/">Participatory
+Medicine</a>. If you too want to track your own health and fitness
+without having information about your private life floating around on
+computers owned by others, I recommend checking it out.</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>
</description>
</item>
<item>
- <title>A day in court challenging seizure of popcorn-time.no for #domstolkontroll</title>
- <link>http://people.skolelinux.org/pere/blog/A_day_in_court_challenging_seizure_of_popcorn_time_no_for__domstolkontroll.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/A_day_in_court_challenging_seizure_of_popcorn_time_no_for__domstolkontroll.html</guid>
- <pubDate>Fri, 3 Feb 2017 11:10:00 +0100</pubDate>
- <description><p align="center"><img width="70%" src="http://people.skolelinux.org/pere/blog/images/2017-02-01-popcorn-time-in-court.jpeg"></p>
-
-<p>On Wednesday, I spent the entire day in court in Follo Tingrett
-representing <a href="https://www.nuug.no/">the member association
-NUUG</a>, alongside <a href="https://www.efn.no/">the member
-association EFN</a> and <a href="http://www.imc.no">the DNS registrar
-IMC</a>, challenging the seizure of the DNS name popcorn-time.no. It
-was interesting to sit in a court of law for the first time in my
-life. Our team can be seen in the picture above: attorney Ola
-Tellesbø, EFN board member Tom Fredrik Blenning, IMC CEO Morten Emil
-Eriksen and NUUG board member Petter Reinholdtsen.</p>
-
-<p><a href="http://www.domstol.no/no/Enkelt-domstol/follo-tingrett/Nar-gar-rettssaken/Beramming/?cid=AAAA1701301512081262234UJFBVEZZZZZEJBAvtale">The
-case at hand</a> is that the Norwegian National Authority for
-Investigation and Prosecution of Economic and Environmental Crime (aka
-Økokrim) decided on their own, to seize a DNS domain early last
-year, without following
-<a href="https://www.norid.no/no/regelverk/navnepolitikk/#link12">the
-official policy of the Norwegian DNS authority</a> which require a
-court decision. The web site in question was a site covering Popcorn
-Time. And Popcorn Time is the name of a technology with both legal
-and illegal applications. Popcorn Time is a client combining
-searching a Bittorrent directory available on the Internet with
-downloading/distribute content via Bittorrent and playing the
-downloaded content on screen. It can be used illegally if it is used
-to distribute content against the will of the right holder, but it can
-also be used legally to play a lot of content, for example the
-millions of movies
-<a href="https://archive.org/details/movies">available from the
-Internet Archive</a> or the collection
-<a href="http://vodo.net/films/">available from Vodo</a>. We created
-<a href="magnet:?xt=urn:btih:86c1802af5a667ca56d3918aecb7d3c0f7173084&dn=PresentasjonFolloTingrett.mov&tr=udp%3A%2F%2Fpublic.popcorn-tracker.org%3A6969%2Fannounce">a
-video demonstrating legally use of Popcorn Time</a> and played it in
-Court. It can of course be downloaded using Bittorrent.</p>
-
-<p>I did not quite know what to expect from a day in court. The
-government held on to their version of the story and we held on to
-ours, and I hope the judge is able to make sense of it all. We will
-know in two weeks time. Unfortunately I do not have high hopes, as
-the Government have the upper hand here with more knowledge about the
-case, better training in handling criminal law and in general higher
-standing in the courts than fairly unknown DNS registrar and member
-associations. It is expensive to be right also in Norway. So far the
-case have cost more than NOK 70 000,-. To help fund the case, NUUG
-and EFN have asked for donations, and managed to collect around NOK 25
-000,- so far. Given the presentation from the Government, I expect
-the government to appeal if the case go our way. And if the case do
-not go our way, I hope we have enough funding to appeal.</p>
-
-<p>From the other side came two people from Økokrim. On the benches,
-appearing to be part of the group from the government were two people
-from the Simonsen Vogt Wiik lawyer office, and three others I am not
-quite sure who was. Økokrim had proposed to present two witnesses
-from The Motion Picture Association, but this was rejected because
-they did not speak Norwegian and it was a bit late to bring in a
-translator, but perhaps the two from MPA were present anyway. All
-seven appeared to know each other. Good to see the case is take
-seriously.</p>
-
-<p>If you, like me, believe the courts should be involved before a DNS
-domain is hijacked by the government, or you believe the Popcorn Time
-technology have a lot of useful and legal applications, I suggest you
-too <a href="http://www.nuug.no/dns-beslag-donasjon.shtml">donate to
-the NUUG defense fund</a>. Both Bitcoin and bank transfer are
-available. If NUUG get more than we need for the legal action (very
-unlikely), the rest will be spend promoting free software, open
-standards and unix-like operating systems in Norway, so no matter what
-happens the money will be put to good use.</p>
-
-<p>If you want to lean more about the case, I recommend you check out
-<a href="https://www.nuug.no/news/tags/dns-domenebeslag/">the blog
-posts from NUUG covering the case</a>. They cover the legal arguments
-on both sides.</p>
+ <title>Privacy respecting health monitor / fitness tracker?</title>
+ <link>http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Privacy_respecting_health_monitor___fitness_tracker_.html</guid>
+ <pubDate>Tue, 7 Aug 2018 16:00:00 +0200</pubDate>
+ <description><p>Dear lazyweb,</p>
+
+<p>I wonder, is there a fitness tracker / health monitor available for
+sale today that respect the users privacy? With this I mean a
+watch/bracelet capable of measuring pulse rate and other
+fitness/health related values (and by all means, also the correct time
+and location if possible), which is <strong>only</strong> provided for
+me to extract/read from the unit with computer without a radio beacon
+and Internet connection. In other words, it do not depend on a cell
+phone app, and do make the measurements available via other peoples
+computer (aka "the cloud"). The collected data should be available
+using only free software. I'm not interested in depending on some
+non-free software that will leave me high and dry some time in the
+future. I've been unable to find any such unit. I would like to buy
+it. The ones I have seen for sale here in Norway are proud to report
+that they share my health data with strangers (aka "cloud enabled").
+Is there an alternative? I'm not interested in giving money to people
+requiring me to accept "privacy terms" to allow myself to measure my
+own health.</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>
</description>
</item>
<item>
- <title>Nasjonalbiblioteket avslutter sin ulovlige bruk av Google Skjemaer</title>
- <link>http://people.skolelinux.org/pere/blog/Nasjonalbiblioteket_avslutter_sin_ulovlige_bruk_av_Google_Skjemaer.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Nasjonalbiblioteket_avslutter_sin_ulovlige_bruk_av_Google_Skjemaer.html</guid>
- <pubDate>Thu, 12 Jan 2017 09:40:00 +0100</pubDate>
- <description><p>I dag fikk jeg en skikkelig gladmelding. Bakgrunnen er at før jul
-arrangerte Nasjonalbiblioteket
-<a href="http://www.nb.no/Bibliotekutvikling/Kunnskapsorganisering/Nasjonalt-verksregister/Seminar-om-verksregister">et
-seminar om sitt knakende gode tiltak «verksregister»</a>. Eneste
-måten å melde seg på dette seminaret var å sende personopplysninger
-til Google via Google Skjemaer. Dette syntes jeg var tvilsom praksis,
-da det bør være mulig å delta på seminarer arrangert av det offentlige
-uten å måtte dele sine interesser, posisjon og andre
-personopplysninger med Google. Jeg ba derfor om innsyn via
-<a href="https://www.mimesbronn.no/">Mimes brønn</a> i
-<a href="https://www.mimesbronn.no/request/personopplysninger_til_google_sk">avtaler
-og vurderinger Nasjonalbiblioteket hadde rundt dette</a>.
-Personopplysningsloven legger klare rammer for hva som må være på
-plass før en kan be tredjeparter, spesielt i utlandet, behandle
-personopplysninger på sine vegne, så det burde eksistere grundig
-dokumentasjon før noe slikt kan bli lovlig. To jurister hos
-Nasjonalbiblioteket mente først dette var helt i orden, og at Googles
-standardavtale kunne brukes som databehandlingsavtale. Det syntes jeg
-var merkelig, men har ikke hatt kapasitet til å følge opp saken før
-for to dager siden.</p>
-
-<p>Gladnyheten i dag, som kom etter at jeg tipset Nasjonalbiblioteket
-om at Datatilsynet underkjente Googles standardavtaler som
-databehandleravtaler i 2011, er at Nasjonalbiblioteket har bestemt seg
-for å avslutte bruken av Googles Skjemaer/Apps og gå i dialog med DIFI
-for å finne bedre måter å håndtere påmeldinger i tråd med
-personopplysningsloven. Det er fantastisk å se at av og til hjelper
-det å spørre hva i alle dager det offentlige holder på med.</p>
+ <title>Sharing images with friends and family using RSS and EXIF/XMP metadata</title>
+ <link>http://people.skolelinux.org/pere/blog/Sharing_images_with_friends_and_family_using_RSS_and_EXIF_XMP_metadata.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Sharing_images_with_friends_and_family_using_RSS_and_EXIF_XMP_metadata.html</guid>
+ <pubDate>Tue, 31 Jul 2018 23:30:00 +0200</pubDate>
+ <description><p>For a while now, I have looked for a sensible way to share images
+with my family using a self hosted solution, as it is unacceptable to
+place images from my personal life under the control of strangers
+working for data hoarders like Google or Dropbox. The last few days I
+have drafted an approach that might work out, and I would like to
+share it with you. I would like to publish images on a server under
+my control, and point some Internet connected display units using some
+free and open standard to the images I published. As my primary
+language is not limited to ASCII, I need to store metadata using
+UTF-8. Many years ago, I hoped to find a digital photo frame capable
+of reading a RSS feed with image references (aka using the
+&lt;enclosure&gt; RSS tag), but was unable to find a current supplier
+of such frames. In the end I gave up that approach.</p>
+
+<p>Some months ago, I discovered that
+<a href="https://www.jwz.org/xscreensaver/">XScreensaver</a> is able to
+read images from a RSS feed, and used it to set up a screen saver on
+my home info screen, showing images from the Daily images feed from
+NASA. This proved to work well. More recently I discovered that
+<a href="https://kodi.tv">Kodi</a> (both using
+<a href="https://www.openelec.tv/">OpenELEC</a> and
+<a href="https://libreelec.tv">LibreELEC</a>) provide the
+<a href="https://github.com/grinsted/script.screensaver.feedreader">Feedreader</a>
+screen saver capable of reading a RSS feed with images and news. For
+fun, I used it this summer to test Kodi on my parents TV by hooking up
+a Raspberry PI unit with LibreELEC, and wanted to provide them with a
+screen saver showing selected pictures from my selection.</p>
+
+<p>Armed with motivation and a test photo frame, I set out to generate
+a RSS feed for the Kodi instance. I adjusted my <a
+href="https://freedombox.org/">Freedombox</a> instance, created
+/var/www/html/privatepictures/, wrote a small Perl script to extract
+title and description metadata from the photo files and generate the
+RSS file. I ended up using Perl instead of python, as the
+libimage-exiftool-perl Debian package seemed to handle the EXIF/XMP
+tags I ended up using, while python3-exif did not. The relevant EXIF
+tags only support ASCII, so I had to find better alternatives. XMP
+seem to have the support I need.</p>
+
+<p>I am a bit unsure which EXIF/XMP tags to use, as I would like to
+use tags that can be easily added/updated using normal free software
+photo managing software. I ended up using the tags set using this
+exiftool command, as these tags can also be set using digiKam:</p>
+
+<blockquote><pre>
+exiftool -headline='The RSS image title' \
+ -description='The RSS image description.' \
+ -subject+=for-family photo.jpeg
+</pre></blockquote>
+
+<p>I initially tried the "-title" and "keyword" tags, but they were
+invisible in digiKam, so I changed to "-headline" and "-subject". I
+use the keyword/subject 'for-family' to flag that the photo should be
+shared with my family. Images with this keyword set are located and
+copied into my Freedombox for the RSS generating script to find.</p>
+
+<p>Are there better ways to do this? Get in touch if you have better
+suggestions.</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>
</description>
</item>
<item>
- <title>Bryter NAV sin egen personvernerklæring?</title>
- <link>http://people.skolelinux.org/pere/blog/Bryter_NAV_sin_egen_personvernerkl_ring_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Bryter_NAV_sin_egen_personvernerkl_ring_.html</guid>
- <pubDate>Wed, 11 Jan 2017 06:50:00 +0100</pubDate>
- <description><p>Jeg leste med interesse en nyhetssak hos
-<a href="http://www.digi.no/artikler/nav-avslorer-trygdemisbruk-ved-a-spore-ip-adresser/367394">digi.no</a>
-og
-<a href="https://www.nrk.no/buskerud/trygdesvindlere-avslores-av-utenlandske-ip-adresser-1.13313461">NRK</a>
-om at det ikke bare er meg, men at også NAV bedriver geolokalisering
-av IP-adresser, og at det gjøres analyse av IP-adressene til de som
-sendes inn meldekort for å se om meldekortet sendes inn fra
-utenlandske IP-adresser. Politiadvokat i Drammen, Hans Lyder Haare,
-er sitert i NRK på at «De to er jo blant annet avslørt av
-IP-adresser. At man ser at meldekortet kommer fra utlandet.»</p>
-
-<p>Jeg synes det er fint at det blir bedre kjent at IP-adresser
-knyttes til enkeltpersoner og at innsamlet informasjon brukes til å
-stedsbestemme personer også av aktører her i Norge. Jeg ser det som
-nok et argument for å bruke
-<a href="https://www.torproject.org/">Tor</a> så mye som mulig for å
-gjøre gjøre IP-lokalisering vanskeligere, slik at en kan beskytte sin
-privatsfære og unngå å dele sin fysiske plassering med
-uvedkommede.</p>
-
-<P>Men det er en ting som bekymrer meg rundt denne nyheten. Jeg ble
-tipset (takk #nuug) om
-<a href="https://www.nav.no/no/NAV+og+samfunn/Kontakt+NAV/Teknisk+brukerstotte/Snarveier/personvernerkl%C3%A6ring-for-arbeids-og-velferdsetaten">NAVs
-personvernerklæring</a>, som under punktet «Personvern og statistikk»
-lyder:</p>
-
-<p><blockquote>
-
-<p>«Når du besøker nav.no, etterlater du deg elektroniske spor. Sporene
-dannes fordi din nettleser automatisk sender en rekke opplysninger til
-NAVs tjener (server-maskin) hver gang du ber om å få vist en side. Det
-er eksempelvis opplysninger om hvilken nettleser og -versjon du
-bruker, og din internettadresse (ip-adresse). For hver side som vises,
-lagres følgende opplysninger:</p>
-
-<ul>
-<li>hvilken side du ser på</li>
-<li>dato og tid</li>
-<li>hvilken nettleser du bruker</li>
-<li>din ip-adresse</li>
-</ul>
-
-<p>Ingen av opplysningene vil bli brukt til å identifisere
-enkeltpersoner. NAV bruker disse opplysningene til å generere en
-samlet statistikk som blant annet viser hvilke sider som er mest
-populære. Statistikken er et redskap til å forbedre våre
-tjenester.»</p>
-
-</blockquote></p>
-
-<p>Jeg klarer ikke helt å se hvordan analyse av de besøkendes
-IP-adresser for å se hvem som sender inn meldekort via web fra en
-IP-adresse i utlandet kan gjøres uten å komme i strid med påstanden om
-at «ingen av opplysningene vil bli brukt til å identifisere
-enkeltpersoner». Det virker dermed for meg som at NAV bryter sine
-egen personvernerklæring, hvilket
-<a href="http://people.skolelinux.org/pere/blog/Er_lover_brutt_n_r_personvernpolicy_ikke_stemmer_med_praksis_.html">Datatilsynet
-fortalte meg i starten av desember antagelig er brudd på
-personopplysningsloven</a>.
-
-<p>I tillegg er personvernerklæringen ganske misvisende i og med at
-NAVs nettsider ikke bare forsyner NAV med personopplysninger, men i
-tillegg ber brukernes nettleser kontakte fem andre nettjenere
-(script.hotjar.com, static.hotjar.com, vars.hotjar.com,
-www.google-analytics.com og www.googletagmanager.com), slik at
-personopplysninger blir gjort tilgjengelig for selskapene Hotjar og
-Google , og alle som kan lytte på trafikken på veien (som FRA, GCHQ og
-NSA). Jeg klarer heller ikke se hvordan slikt spredning av
-personopplysninger kan være i tråd med kravene i
-personopplysningloven, eller i tråd med NAVs personvernerklæring.</p>
-
-<p>Kanskje NAV bør ta en nøye titt på sin personvernerklæring? Eller
-kanskje Datatilsynet bør gjøre det?</p>
+ <title>Simple streaming the Linux desktop to Kodi using GStreamer and RTP</title>
+ <link>http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html</guid>
+ <pubDate>Thu, 12 Jul 2018 17:55:00 +0200</pubDate>
+ <description><p>Last night, I wrote
+<a href="http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html">a
+recipe to stream a Linux desktop using VLC to a instance of Kodi</a>.
+During the day I received valuable feedback, and thanks to the
+suggestions I have been able to rewrite the recipe into a much simpler
+approach requiring no setup at all. It is a single script that take
+care of it all.</p>
+
+<p>This new script uses GStreamer instead of VLC to capture the
+desktop and stream it to Kodi. This fixed the video quality issue I
+saw initially. It further removes the need to add a m3u file on the
+Kodi machine, as it instead connects to
+<a href="https://kodi.wiki/view/JSON-RPC_API/v8">the JSON-RPC API in
+Kodi</a> and simply ask Kodi to play from the stream created using
+GStreamer. Streaming the desktop to Kodi now become trivial. Copy
+the script below, run it with the DNS name or IP address of the kodi
+server to stream to as the only argument, and watch your screen show
+up on the Kodi screen. Note, it depend on multicast on the local
+network, so if you need to stream outside the local network, the
+script must be modified. Also note, I have no idea if audio work, as
+I only care about the picture part.</p>
+
+<blockquote><pre>
+#!/bin/sh
+#
+# Stream the Linux desktop view to Kodi. See
+# http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html
+# for backgorund information.
+
+# Make sure the stream is stopped in Kodi and the gstreamer process is
+# killed if something go wrong (for example if curl is unable to find the
+# kodi server). Do the same when interrupting this script.
+kodicmd() {
+ host="$1"
+ cmd="$2"
+ params="$3"
+ curl --silent --header 'Content-Type: application/json' \
+ --data-binary "{ \"id\": 1, \"jsonrpc\": \"2.0\", \"method\": \"$cmd\", \"params\": $params }" \
+ "http://$host/jsonrpc"
+}
+cleanup() {
+ if [ -n "$kodihost" ] ; then
+ # Stop the playing when we end
+ playerid=$(kodicmd "$kodihost" Player.GetActivePlayers "{}" |
+ jq .result[].playerid)
+ kodicmd "$kodihost" Player.Stop "{ \"playerid\" : $playerid }" > /dev/null
+ fi
+ if [ "$gstpid" ] && kill -0 "$gstpid" >/dev/null 2>&1; then
+ kill "$gstpid"
+ fi
+}
+trap cleanup EXIT INT
+
+if [ -n "$1" ]; then
+ kodihost=$1
+ shift
+else
+ kodihost=kodi.local
+fi
+
+mcast=239.255.0.1
+mcastport=1234
+mcastttl=1
+
+pasrc=$(pactl list | grep -A2 'Source #' | grep 'Name: .*\.monitor$' | \
+ cut -d" " -f2|head -1)
+gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
+ videoconvert ! queue2 ! \
+ x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
+ key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
+ mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
+ udpsink host=$mcast port=$mcastport ttl-mc=$mcastttl auto-multicast=1 sync=0 \
+ pulsesrc device=$pasrc ! audioconvert ! queue2 ! avenc_aac ! queue2 ! mux. \
+ > /dev/null 2>&1 &
+gstpid=$!
+
+# Give stream a second to get going
+sleep 1
+
+# Ask kodi to start streaming using its JSON-RPC API
+kodicmd "$kodihost" Player.Open \
+ "{\"item\": { \"file\": \"udp://@$mcast:$mcastport\" } }" > /dev/null
+
+# wait for gst to end
+wait "$gstpid"
+</pre></blockquote>
+
+<p>I hope you find the approach useful. I know I do.</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>
</description>
</item>
<item>
- <title>Where did that package go? &mdash; geolocated IP traceroute</title>
- <link>http://people.skolelinux.org/pere/blog/Where_did_that_package_go___mdash__geolocated_IP_traceroute.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Where_did_that_package_go___mdash__geolocated_IP_traceroute.html</guid>
- <pubDate>Mon, 9 Jan 2017 12:20:00 +0100</pubDate>
- <description><p>Did you ever wonder where the web trafic really flow to reach the
-web servers, and who own the network equipment it is flowing through?
-It is possible to get a glimpse of this from using traceroute, but it
-is hard to find all the details. Many years ago, I wrote a system to
-map the Norwegian Internet (trying to figure out if our plans for a
-network game service would get low enough latency, and who we needed
-to talk to about setting up game servers close to the users. Back
-then I used traceroute output from many locations (I asked my friends
-to run a script and send me their traceroute output) to create the
-graph and the map. The output from traceroute typically look like
-this:
-
-<p><pre>
-traceroute to www.stortinget.no (85.88.67.10), 30 hops max, 60 byte packets
- 1 uio-gw10.uio.no (129.240.202.1) 0.447 ms 0.486 ms 0.621 ms
- 2 uio-gw8.uio.no (129.240.24.229) 0.467 ms 0.578 ms 0.675 ms
- 3 oslo-gw1.uninett.no (128.39.65.17) 0.385 ms 0.373 ms 0.358 ms
- 4 te3-1-2.br1.fn3.as2116.net (193.156.90.3) 1.174 ms 1.172 ms 1.153 ms
- 5 he16-1-1.cr1.san110.as2116.net (195.0.244.234) 2.627 ms he16-1-1.cr2.oslosda310.as2116.net (195.0.244.48) 3.172 ms he16-1-1.cr1.san110.as2116.net (195.0.244.234) 2.857 ms
- 6 ae1.ar8.oslosda310.as2116.net (195.0.242.39) 0.662 ms 0.637 ms ae0.ar8.oslosda310.as2116.net (195.0.242.23) 0.622 ms
- 7 89.191.10.146 (89.191.10.146) 0.931 ms 0.917 ms 0.955 ms
- 8 * * *
- 9 * * *
-[...]
-</pre></p>
-
-<p>This show the DNS names and IP addresses of (at least some of the)
-network equipment involved in getting the data traffic from me to the
-www.stortinget.no server, and how long it took in milliseconds for a
-package to reach the equipment and return to me. Three packages are
-sent, and some times the packages do not follow the same path. This
-is shown for hop 5, where three different IP addresses replied to the
-traceroute request.</p>
-
-<p>There are many ways to measure trace routes. Other good traceroute
-implementations I use are traceroute (using ICMP packages) mtr (can do
-both ICMP, UDP and TCP) and scapy (python library with ICMP, UDP, TCP
-traceroute and a lot of other capabilities). All of them are easily
-available in <a href="https://www.debian.org/">Debian</a>.</p>
-
-<p>This time around, I wanted to know the geographic location of
-different route points, to visualize how visiting a web page spread
-information about the visit to a lot of servers around the globe. The
-background is that a web site today often will ask the browser to get
-from many servers the parts (for example HTML, JSON, fonts,
-JavaScript, CSS, video) required to display the content. This will
-leak information about the visit to those controlling these servers
-and anyone able to peek at the data traffic passing by (like your ISP,
-the ISPs backbone provider, FRA, GCHQ, NSA and others).</p>
-
-<p>Lets pick an example, the Norwegian parliament web site
-www.stortinget.no. It is read daily by all members of parliament and
-their staff, as well as political journalists, activits and many other
-citizens of Norway. A visit to the www.stortinget.no web site will
-ask your browser to contact 8 other servers: ajax.googleapis.com,
-insights.hotjar.com, script.hotjar.com, static.hotjar.com,
-stats.g.doubleclick.net, www.google-analytics.com,
-www.googletagmanager.com and www.netigate.se. I extracted this by
-asking <a href="http://phantomjs.org/">PhantomJS</a> to visit the
-Stortinget web page and tell me all the URLs PhantomJS downloaded to
-render the page (in HAR format using
-<a href="https://github.com/ariya/phantomjs/blob/master/examples/netsniff.js">their
-netsniff example</a>. I am very grateful to Gorm for showing me how
-to do this). My goal is to visualize network traces to all IP
-addresses behind these DNS names, do show where visitors personal
-information is spread when visiting the page.</p>
-
-<p align="center"><a href="www.stortinget.no-geoip.kml"><img
-src="http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-geoip-small.png" alt="map of combined traces for URLs used by www.stortinget.no using GeoIP"/></a></p>
-
-<p>When I had a look around for options, I could not find any good
-free software tools to do this, and decided I needed my own traceroute
-wrapper outputting KML based on locations looked up using GeoIP. KML
-is easy to work with and easy to generate, and understood by several
-of the GIS tools I have available. I got good help from by NUUG
-colleague Anders Einar with this, and the result can be seen in
-<a href="https://github.com/petterreinholdtsen/kmltraceroute">my
-kmltraceroute git repository</a>. Unfortunately, the quality of the
-free GeoIP databases I could find (and the for-pay databases my
-friends had access to) is not up to the task. The IP addresses of
-central Internet infrastructure would typically be placed near the
-controlling companies main office, and not where the router is really
-located, as you can see from <a href="www.stortinget.no-geoip.kml">the
-KML file I created</a> using the GeoLite City dataset from MaxMind.
-
-<p align="center"><a href="http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-scapy.svg"><img
-src="http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-scapy-small.png" alt="scapy traceroute graph for URLs used by www.stortinget.no"/></a></p>
-
-<p>I also had a look at the visual traceroute graph created by
-<a href="http://www.secdev.org/projects/scapy/">the scrapy project</a>,
-showing IP network ownership (aka AS owner) for the IP address in
-question.
-<a href="http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-scapy.svg">The
-graph display a lot of useful information about the traceroute in SVG
-format</a>, and give a good indication on who control the network
-equipment involved, but it do not include geolocation. This graph
-make it possible to see the information is made available at least for
-UNINETT, Catchcom, Stortinget, Nordunet, Google, Amazon, Telia, Level
-3 Communications and NetDNA.</p>
-
-<p align="center"><a href="https://geotraceroute.com/index.php?node=4&host=www.stortinget.no"><img
-src="http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-geotraceroute-small.png" alt="example geotraceroute view for www.stortinget.no"/></a></p>
-
-<p>In the process, I came across the
-<a href="https://geotraceroute.com/">web service GeoTraceroute</a> by
-Salim Gasmi. Its methology of combining guesses based on DNS names,
-various location databases and finally use latecy times to rule out
-candidate locations seemed to do a very good job of guessing correct
-geolocation. But it could only do one trace at the time, did not have
-a sensor in Norway and did not make the geolocations easily available
-for postprocessing. So I contacted the developer and asked if he
-would be willing to share the code (he refused until he had time to
-clean it up), but he was interested in providing the geolocations in a
-machine readable format, and willing to set up a sensor in Norway. So
-since yesterday, it is possible to run traces from Norway in this
-service thanks to a sensor node set up by
-<a href="https://www.nuug.no/">the NUUG assosiation</a>, and get the
-trace in KML format for further processing.</p>
-
-<p align="center"><a href="http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-geotraceroute-kml-join.kml"><img
-src="http://people.skolelinux.org/pere/blog/images/2017-01-09-www.stortinget.no-geotraceroute-kml-join.png" alt="map of combined traces for URLs used by www.stortinget.no using geotraceroute"/></a></p>
-
-<p>Here we can see a lot of trafic passes Sweden on its way to
-Denmark, Germany, Holland and Ireland. Plenty of places where the
-Snowden confirmations verified the traffic is read by various actors
-without your best interest as their top priority.</p>
-
-<p>Combining KML files is trivial using a text editor, so I could loop
-over all the hosts behind the urls imported by www.stortinget.no and
-ask for the KML file from GeoTraceroute, and create a combined KML
-file with all the traces (unfortunately only one of the IP addresses
-behind the DNS name is traced this time. To get them all, one would
-have to request traces using IP number instead of DNS names from
-GeoTraceroute). That might be the next step in this project.</p>
-
-<p>Armed with these tools, I find it a lot easier to figure out where
-the IP traffic moves and who control the boxes involved in moving it.
-And every time the link crosses for example the Swedish border, we can
-be sure Swedish Signal Intelligence (FRA) is listening, as GCHQ do in
-Britain and NSA in USA and cables around the globe. (Hm, what should
-we tell them? :) Keep that in mind if you ever send anything
-unencrypted over the Internet.</p>
-
-<p>PS: KML files are drawn using
-<a href="http://ivanrublev.me/kml/">the KML viewer from Ivan
-Rublev<a/>, as it was less cluttered than the local Linux application
-Marble. There are heaps of other options too.</p>
+ <title>Streaming the Linux desktop to Kodi using VLC and RTSP</title>
+ <link>http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Streaming_the_Linux_desktop_to_Kodi_using_VLC_and_RTSP.html</guid>
+ <pubDate>Thu, 12 Jul 2018 02:00:00 +0200</pubDate>
+ <description><p>PS: See
+<ahref="http://people.skolelinux.org/pere/blog/Simple_streaming_the_Linux_desktop_to_Kodi_using_GStreamer_and_RTP.html">the
+followup post</a> for a even better approach.</p>
+
+<p>A while back, I was asked by a friend how to stream the desktop to
+my projector connected to Kodi. I sadly had to admit that I had no
+idea, as it was a task I never had tried. Since then, I have been
+looking for a way to do so, preferable without much extra software to
+install on either side. Today I found a way that seem to kind of
+work. Not great, but it is a start.</p>
+
+<p>I had a look at several approaches, for example
+<a href="https://github.com/mfoetsch/dlna_live_streaming">using uPnP
+DLNA as described in 2011</a>, but it required a uPnP server, fuse and
+local storage enough to store the stream locally. This is not going
+to work well for me, lacking enough free space, and it would
+impossible for my friend to get working.</p>
+
+<p>Next, it occurred to me that perhaps I could use VLC to create a
+video stream that Kodi could play. Preferably using
+broadcast/multicast, to avoid having to change any setup on the Kodi
+side when starting such stream. Unfortunately, the only recipe I
+could find using multicast used the rtp protocol, and this protocol
+seem to not be supported by Kodi.</p>
+
+<p>On the other hand, the rtsp protocol is working! Unfortunately I
+have to specify the IP address of the streaming machine in both the
+sending command and the file on the Kodi server. But it is showing my
+desktop, and thus allow us to have a shared look on the big screen at
+the programs I work on.</p>
+
+<p>I did not spend much time investigating codeces. I combined the
+rtp and rtsp recipes from
+<a href="https://wiki.videolan.org/Documentation:Streaming_HowTo/Command_Line_Examples/">the
+VLC Streaming HowTo/Command Line Examples</a>, and was able to get
+this working on the desktop/streaming end.</p>
+
+<blockquote><pre>
+vlc screen:// --sout \
+ '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{dst=projector.local,port=1234,sdp=rtsp://192.168.11.4:8080/test.sdp}'
+</pre></blockquote>
+
+<p>I ssh-ed into my Kodi box and created a file like this with the
+same IP address:</p>
+
+<blockquote><pre>
+echo rtsp://192.168.11.4:8080/test.sdp \
+ > /storage/videos/screenstream.m3u
+</pre></blockquote>
+
+<p>Note the 192.168.11.4 IP address is my desktops IP address. As far
+as I can tell the IP must be hardcoded for this to work. In other
+words, if someone elses machine is going to do the steaming, you have
+to update screenstream.m3u on the Kodi machine and adjust the vlc
+recipe. To get started, locate the file in Kodi and select the m3u
+file while the VLC stream is running. The desktop then show up in my
+big screen. :)</p>
+
+<p>When using the same technique to stream a video file with audio,
+the audio quality is really bad. No idea if the problem is package
+loss or bad parameters for the transcode. I do not know VLC nor Kodi
+enough to tell.</p>
+
+<p><strong>Update 2018-07-12</strong>: Johannes Schauer send me a few
+succestions and reminded me about an important step. The "screen:"
+input source is only available once the vlc-plugin-access-extra
+package is installed on Debian. Without it, you will see this error
+message: "VLC is unable to open the MRL 'screen://'. Check the log
+for details." He further found that it is possible to drop some parts
+of the VLC command line to reduce the amount of hardcoded information.
+It is also useful to consider using cvlc to avoid having the VLC
+window in the desktop view. In sum, this give us this command line on
+the source end
+
+<blockquote><pre>
+cvlc screen:// --sout \
+ '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{sdp=rtsp://:8080/}'
+</pre></blockquote>
+
+<p>and this on the Kodi end<p>
+
+<blockquote><pre>
+echo rtsp://192.168.11.4:8080/ \
+ > /storage/videos/screenstream.m3u
+</pre></blockquote>
+
+<p>Still bad image quality, though. But I did discover that streaming
+a DVD using dvdsimple:///dev/dvd as the source had excellent video and
+audio quality, so I guess the issue is in the input or transcoding
+parts, not the rtsp part. I've tried to change the vb and ab
+parameters to use more bandwidth, but it did not make a
+difference.</p>
+
+<p>I further received a suggestion from Einar Haraldseid to try using
+gstreamer instead of VLC, and this proved to work great! He also
+provided me with the trick to get Kodi to use a multicast stream as
+its source. By using this monstrous oneliner, I can stream my desktop
+with good video quality in reasonable framerate to the 239.255.0.1
+multicast address on port 1234:
+
+<blockquote><pre>
+gst-launch-1.0 ximagesrc use-damage=0 ! video/x-raw,framerate=30/1 ! \
+ videoconvert ! queue2 ! \
+ x264enc bitrate=8000 speed-preset=superfast tune=zerolatency qp-min=30 \
+ key-int-max=15 bframes=2 ! video/x-h264,profile=high ! queue2 ! \
+ mpegtsmux alignment=7 name=mux ! rndbuffersize max=1316 min=1316 ! \
+ udpsink host=239.255.0.1 port=1234 ttl-mc=1 auto-multicast=1 sync=0 \
+ pulsesrc device=$(pactl list | grep -A2 'Source #' | \
+ grep 'Name: .*\.monitor$' | cut -d" " -f2|head -1) ! \
+ audioconvert ! queue2 ! avenc_aac ! queue2 ! mux.
+</pre></blockquote>
+
+<p>and this on the Kodi end<p>
+
+<blockquote><pre>
+echo udp://@239.255.0.1:1234 \
+ > /storage/videos/screenstream.m3u
+</pre></blockquote>
+
+<p>Note the trick to pick a valid pulseaudio source. It might not
+pick the one you need. This approach will of course lead to trouble
+if more than one source uses the same multicast port and address.
+Note the ttl-mc=1 setting, which limit the multicast packages to the
+local network. If the value is increased, your screen will be
+broadcasted further, one network "hop" for each increase (read up on
+multicast to learn more. :)!</p>
+
+<p>Having cracked how to get Kodi to receive multicast streams, I
+could use this VLC command to stream to the same multicast address.
+The image quality is way better than the rtsp approach, but gstreamer
+seem to be doing a better job.</p>
+
+<blockquote><pre>
+cvlc screen:// --sout '#transcode{vcodec=mp4v,acodec=mpga,vb=800,ab=128}:rtp{mux=ts,dst=239.255.0.1,port=1234,sdp=sap}'
+</pre></blockquote>
<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&label=PetterReinholdtsenBlog">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</description>
</item>
<item>
- <title>Introducing ical-archiver to split out old iCalendar entries</title>
- <link>http://people.skolelinux.org/pere/blog/Introducing_ical_archiver_to_split_out_old_iCalendar_entries.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Introducing_ical_archiver_to_split_out_old_iCalendar_entries.html</guid>
- <pubDate>Wed, 4 Jan 2017 12:20:00 +0100</pubDate>
- <description><p>Do you have a large <a href="https://icalendar.org/">iCalendar</a>
-file with lots of old entries, and would like to archive them to save
-space and resources? At least those of us using KOrganizer know that
-turning on and off an event set become slower and slower the more
-entries are in the set. While working on migrating our calendars to a
-<a href="http://radicale.org/">Radicale CalDAV server</a> on our
-<a href="https://freedomboxfoundation.org/">Freedombox server</a/>, my
-loved one wondered if I could find a way to split up the calendar file
-she had in KOrganizer, and I set out to write a tool. I spent a few
-days writing and polishing the system, and it is now ready for general
-consumption. The
-<a href="https://github.com/petterreinholdtsen/ical-archiver">code for
-ical-archiver</a> is publicly available from a git repository on
-github. The system is written in Python and depend on
-<a href="http://eventable.github.io/vobject/">the vobject Python
-module</a>.</p>
-
-<p>To use it, locate the iCalendar file you want to operate on and
-give it as an argument to the ical-archiver script. This will
-generate a set of new files, one file per component type per year for
-all components expiring more than two years in the past. The vevent,
-vtodo and vjournal entries are handled by the script. The remaining
-entries are stored in a 'remaining' file.</p>
-
-<p>This is what a test run can look like:
-
-<p><pre>
-% ical-archiver t/2004-2016.ics
-Found 3612 vevents
-Found 6 vtodos
-Found 2 vjournals
-Writing t/2004-2016.ics-subset-vevent-2004.ics
-Writing t/2004-2016.ics-subset-vevent-2005.ics
-Writing t/2004-2016.ics-subset-vevent-2006.ics
-Writing t/2004-2016.ics-subset-vevent-2007.ics
-Writing t/2004-2016.ics-subset-vevent-2008.ics
-Writing t/2004-2016.ics-subset-vevent-2009.ics
-Writing t/2004-2016.ics-subset-vevent-2010.ics
-Writing t/2004-2016.ics-subset-vevent-2011.ics
-Writing t/2004-2016.ics-subset-vevent-2012.ics
-Writing t/2004-2016.ics-subset-vevent-2013.ics
-Writing t/2004-2016.ics-subset-vevent-2014.ics
-Writing t/2004-2016.ics-subset-vjournal-2007.ics
-Writing t/2004-2016.ics-subset-vjournal-2011.ics
-Writing t/2004-2016.ics-subset-vtodo-2012.ics
-Writing t/2004-2016.ics-remaining.ics
+ <title>What is the most supported MIME type in Debian in 2018?</title>
+ <link>http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_in_2018_.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_in_2018_.html</guid>
+ <pubDate>Mon, 9 Jul 2018 08:05:00 +0200</pubDate>
+ <description><p>Five years ago,
+<a href="http://people.skolelinux.org/pere/blog/What_is_the_most_supported_MIME_type_in_Debian_.html">I
+measured what the most supported MIME type in Debian was</a>, by
+analysing the desktop files in all packages in the archive. Since
+then, the DEP-11 AppStream system has been put into production, making
+the task a lot easier. This made me want to repeat the measurement,
+to see how much things changed. Here are the new numbers, for
+unstable only this time:
+
+<p><strong>Debian Unstable:</strong></p>
+
+<pre>
+ count MIME type
+ ----- -----------------------
+ 56 image/jpeg
+ 55 image/png
+ 49 image/tiff
+ 48 image/gif
+ 39 image/bmp
+ 38 text/plain
+ 37 audio/mpeg
+ 34 application/ogg
+ 33 audio/x-flac
+ 32 audio/x-mp3
+ 30 audio/x-wav
+ 30 audio/x-vorbis+ogg
+ 29 image/x-portable-pixmap
+ 27 inode/directory
+ 27 image/x-portable-bitmap
+ 27 audio/x-mpeg
+ 26 application/x-ogg
+ 25 audio/x-mpegurl
+ 25 audio/ogg
+ 24 text/html
+</pre>
+
+<p>The list was created like this using a sid chroot: "cat
+/var/lib/apt/lists/*sid*_dep11_Components-amd64.yml.gz| zcat | awk '/^
+- \S+\/\S+$/ {print $2 }' | sort | uniq -c | sort -nr | head -20"</p>
+
+<p>It is interesting to see how image formats have passed text/plain
+as the most announced supported MIME type. These days, thanks to the
+AppStream system, if you run into a file format you do not know, and
+want to figure out which packages support the format, you can find the
+MIME type of the file using "file --mime &lt;filename&gt;", and then
+look up all packages announcing support for this format in their
+AppStream metadata (XML or .desktop file) using "appstreamcli
+what-provides mimetype &lt;mime-type&gt;. For example if you, like
+me, want to know which packages support inode/directory, you can get a
+list like this:</p>
+
+<p><blockquote><pre>
+% appstreamcli what-provides mimetype inode/directory | grep Package: | sort
+Package: anjuta
+Package: audacious
+Package: baobab
+Package: cervisia
+Package: chirp
+Package: dolphin
+Package: doublecmd-common
+Package: easytag
+Package: enlightenment
+Package: ephoto
+Package: filelight
+Package: gwenview
+Package: k4dirstat
+Package: kaffeine
+Package: kdesvn
+Package: kid3
+Package: kid3-qt
+Package: nautilus
+Package: nemo
+Package: pcmanfm
+Package: pcmanfm-qt
+Package: qweborf
+Package: ranger
+Package: sirikali
+Package: spacefm
+Package: spacefm
+Package: vifm
+%
+</pre></blockquote></p>
+
+<p>Using the same method, I can quickly discover that the Sketchup file
+format is not yet supported by any package in Debian:</p>
+
+<p><blockquote><pre>
+% appstreamcli what-provides mimetype application/vnd.sketchup.skp
+Could not find component providing 'mimetype::application/vnd.sketchup.skp'.
%
-</pre></p>
+</pre></blockquote></p>
+
+<p>Yesterday I used it to figure out which packages support the STL 3D
+format:</p>
-<p>As you can see, the original file is untouched and new files are
-written with names derived from the original file. If you are happy
-with their content, the *-remaining.ics file can replace the original
-the the others can be archived or imported as historical calendar
-collections.</p>
+<p><blockquote><pre>
+% appstreamcli what-provides mimetype application/sla|grep Package
+Package: cura
+Package: meshlab
+Package: printrun
+%
+</pre></blockquote></p>
-<p>The script should probably be improved a bit. The error handling
-when discovering broken entries is not good, and I am not sure yet if
-it make sense to split different entry types into separate files or
-not. The program is thus likely to change. If you find it
-interesting, please get in touch. :)</p>
+<p>PS: A new version of Cura was uploaded to Debian yesterday.</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&label=PetterReinholdtsenBlog">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</description>
</item>
<item>
- <title>Appstream just learned how to map hardware to packages too!</title>
- <link>http://people.skolelinux.org/pere/blog/Appstream_just_learned_how_to_map_hardware_to_packages_too_.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Appstream_just_learned_how_to_map_hardware_to_packages_too_.html</guid>
- <pubDate>Fri, 23 Dec 2016 10:30:00 +0100</pubDate>
- <description><p>I received a very nice Christmas present today. As my regular
-readers probably know, I have been working on the
-<a href="http://packages.qa.debian.org/isenkram">the Isenkram
-system</a> for many years. The goal of the Isenkram system is to make
-it easier for users to figure out what to install to get a given piece
-of hardware to work in Debian, and a key part of this system is a way
-to map hardware to packages. Isenkram have its own mapping database,
-and also uses data provided by each package using the AppStream
-metadata format. And today,
-<a href="https://tracker.debian.org/pkg/appstream">AppStream</a> in
-Debian learned to look up hardware the same way Isenkram is doing it,
-ie using fnmatch():</p>
-
-<p><pre>
-% appstreamcli what-provides modalias \
- usb:v1130p0202d0100dc00dsc00dp00ic03isc00ip00in00
-Identifier: pymissile [generic]
-Name: pymissile
-Summary: Control original Striker USB Missile Launcher
-Package: pymissile
-% appstreamcli what-provides modalias usb:v0694p0002d0000
-Identifier: libnxt [generic]
-Name: libnxt
-Summary: utility library for talking to the LEGO Mindstorms NXT brick
-Package: libnxt
----
-Identifier: t2n [generic]
-Name: t2n
-Summary: Simple command-line tool for Lego NXT
-Package: t2n
----
-Identifier: python-nxt [generic]
-Name: python-nxt
-Summary: Python driver/interface/wrapper for the Lego Mindstorms NXT robot
-Package: python-nxt
----
-Identifier: nbc [generic]
-Name: nbc
-Summary: C compiler for LEGO Mindstorms NXT bricks
-Package: nbc
-%
-</pre></p>
-
-<p>A similar query can be done using the combined AppStream and
-Isenkram databases using the isenkram-lookup tool:</p>
-
-<p><pre>
-% isenkram-lookup usb:v1130p0202d0100dc00dsc00dp00ic03isc00ip00in00
-pymissile
-% isenkram-lookup usb:v0694p0002d0000
-libnxt
-nbc
-python-nxt
-t2n
-%
-</pre></p>
-
-<p>You can find modalias values relevant for your machine using
-<tt>cat $(find /sys/devices/ -name modalias)</tt>.
-
-<p>If you want to make this system a success and help Debian users
-make the most of the hardware they have, please
-help<a href="https://wiki.debian.org/AppStream/Guidelines">add
-AppStream metadata for your package following the guidelines</a>
-documented in the wiki. So far only 11 packages provide such
-information, among the several hundred hardware specific packages in
-Debian. The Isenkram database on the other hand contain 101 packages,
-mostly related to USB dongles. Most of the packages with hardware
-mapping in AppStream are LEGO Mindstorms related, because I have, as
-part of my involvement in
-<a href="https://wiki.debian.org/LegoDesigners">the Debian LEGO
-team</a> given priority to making sure LEGO users get proposed the
-complete set of packages in Debian for that particular hardware. The
-team also got a nice Christmas present today. The
-<a href="https://tracker.debian.org/pkg/nxt-firmware">nxt-firmware
-package</a> made it into Debian. With this package in place, it is
-now possible to use the LEGO Mindstorms NXT unit with only free
-software, as the nxt-firmware package contain the source and firmware
-binaries for the NXT brick.</p>
+ <title>Debian APT upgrade without enough free space on the disk...</title>
+ <link>http://people.skolelinux.org/pere/blog/Debian_APT_upgrade_without_enough_free_space_on_the_disk___.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Debian_APT_upgrade_without_enough_free_space_on_the_disk___.html</guid>
+ <pubDate>Sun, 8 Jul 2018 12:10:00 +0200</pubDate>
+ <description><p>Quite regularly, I let my Debian Sid/Unstable chroot stay untouch
+for a while, and when I need to update it there is not enough free
+space on the disk for apt to do a normal 'apt upgrade'. I normally
+would resolve the issue by doing 'apt install &lt;somepackages&gt;' to
+upgrade only some of the packages in one batch, until the amount of
+packages to download fall below the amount of free space available.
+Today, I had about 500 packages to upgrade, and after a while I got
+tired of trying to install chunks of packages manually. I concluded
+that I did not have the spare hours required to complete the task, and
+decided to see if I could automate it. I came up with this small
+script which I call 'apt-in-chunks':</p>
+
+<p><blockquote><pre>
+#!/bin/sh
+#
+# Upgrade packages when the disk is too full to upgrade every
+# upgradable package in one lump. Fetching packages to upgrade using
+# apt, and then installing using dpkg, to avoid changing the package
+# flag for manual/automatic.
+
+set -e
+
+ignore() {
+ if [ "$1" ]; then
+ grep -v "$1"
+ else
+ cat
+ fi
+}
+
+for p in $(apt list --upgradable | ignore "$@" |cut -d/ -f1 | grep -v '^Listing...'); do
+ echo "Upgrading $p"
+ apt clean
+ apt install --download-only -y $p
+ for f in /var/cache/apt/archives/*.deb; do
+ if [ -e "$f" ]; then
+ dpkg -i /var/cache/apt/archives/*.deb
+ break
+ fi
+ done
+done
+</pre></blockquote></p>
+
+<p>The script will extract the list of packages to upgrade, try to
+download the packages needed to upgrade one package, install the
+downloaded packages using dpkg. The idea is to upgrade packages
+without changing the APT mark for the package (ie the one recording of
+the package was manually requested or pulled in as a dependency). To
+use it, simply run it as root from the command line. If it fail, try
+'apt install -f' to clean up the mess and run the script again. This
+might happen if the new packages conflict with one of the old
+packages. dpkg is unable to remove, while apt can do this.</p>
+
+<p>It take one option, a package to ignore in the list of packages to
+upgrade. The option to ignore a package is there to be able to skip
+the packages that are simply too large to unpack. Today this was
+'ghc', but I have run into other large packages causing similar
+problems earlier (like TeX).</p>
+
+<p>Update 2018-07-08: Thanks to Paul Wise, I am aware of two
+alternative ways to handle this. The "unattended-upgrades
+--minimal-upgrade-steps" option will try to calculate upgrade sets for
+each package to upgrade, and then upgrade them in order, smallest set
+first. It might be a better option than my above mentioned script.
+Also, "aptutude upgrade" can upgrade single packages, thus avoiding
+the need for using "dpkg -i" in the script above.</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&label=PetterReinholdtsenBlog">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
+<b><a href="bitcoin:15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b">15oWEoG9dUPovwmUL9KWAnYRtNJEkP1u1b</a></b>.</p>
</description>
</item>
<item>
- <title>Isenkram updated with a lot more hardware-package mappings</title>
- <link>http://people.skolelinux.org/pere/blog/Isenkram_updated_with_a_lot_more_hardware_package_mappings.html</link>
- <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Isenkram_updated_with_a_lot_more_hardware_package_mappings.html</guid>
- <pubDate>Tue, 20 Dec 2016 11:55:00 +0100</pubDate>
- <description><p><a href="http://packages.qa.debian.org/isenkram">The Isenkram
-system</a> I wrote two years ago to make it easier in Debian to find
-and install packages to get your hardware dongles to work, is still
-going strong. It is a system to look up the hardware present on or
-connected to the current system, and map the hardware to Debian
-packages. It can either be done using the tools in isenkram-cli or
-using the user space daemon in the isenkram package. The latter will
-notify you, when inserting new hardware, about what packages to
-install to get the dongle working. It will even provide a button to
-click on to ask packagekit to install the packages.</p>
-
-<p>Here is an command line example from my Thinkpad laptop:</p>
-
-<p><pre>
-% isenkram-lookup
-bluez
-cheese
-ethtool
-fprintd
-fprintd-demo
-gkrellm-thinkbat
-hdapsd
-libpam-fprintd
-pidgin-blinklight
-thinkfan
-tlp
-tp-smapi-dkms
-tp-smapi-source
-tpb
-%
-</pre></p>
+ <title>The worlds only stone power plant?</title>
+ <link>http://people.skolelinux.org/pere/blog/The_worlds_only_stone_power_plant_.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/The_worlds_only_stone_power_plant_.html</guid>
+ <pubDate>Sat, 30 Jun 2018 10:35:00 +0200</pubDate>
+ <description><p>So far, at least hydro-electric power, coal power, wind power,
+solar power, and wood power are well known. Until a few days ago, I
+had never heard of stone power. Then I learn about a quarry in a
+mountain in
+<a href="https://en.wikipedia.org/wiki/Bremanger">Bremanger</a> i
+Norway, where
+<a href="https://www.bontrup.com/en/activities/raw-materials/bremanger-quarry/">the
+Bremanger Quarry</a> company is extracting stone and dumping the stone
+into a shaft leading to its shipping harbour. This downward movement
+in this shaft is used to produce electricity. In short, it is using
+falling rocks instead of falling water to produce electricity, and
+according to its own statements it is producing more power than it is
+using, and selling the surplus electricity to the Norwegian power
+grid. I find the concept truly amazing. Is this the worlds only
+stone power plant?</p>
-<p>It can also list the firware package providing firmware requested
-by the load kernel modules, which in my case is an empty list because
-I have all the firmware my machine need:
+<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>
+</description>
+ </item>
+
+ <item>
+ <title>Add-on to control the projector from within Kodi</title>
+ <link>http://people.skolelinux.org/pere/blog/Add_on_to_control_the_projector_from_within_Kodi.html</link>
+ <guid isPermaLink="true">http://people.skolelinux.org/pere/blog/Add_on_to_control_the_projector_from_within_Kodi.html</guid>
+ <pubDate>Tue, 26 Jun 2018 23:55:00 +0200</pubDate>
+ <description><p>My movie playing setup involve <a href="https://kodi.tv/">Kodi</a>,
+<a href="https://openelec.tv">OpenELEC</a> (probably soon to be
+replaced with <a href="https://libreelec.tv/">LibreELEC</a>) and an
+Infocus IN76 video projector. My projector can be controlled via both
+a infrared remote controller, and a RS-232 serial line. The vendor of
+my projector, <a href="https://www.infocus.com/">InFocus</a>, had been
+sensible enough to document the serial protocol in its user manual, so
+it is easily available, and I used it some years ago to write
+<a href="https://github.com/petterreinholdtsen/infocus-projector-control">a
+small script to control the projector</a>. For a while now, I longed
+for a setup where the projector was controlled by Kodi, for example in
+such a way that when the screen saver went on, the projector was
+turned off, and when the screen saver exited, the projector was turned
+on again.</p>
+
+<p>A few days ago, with very good help from parts of my family, I
+managed to find a Kodi Add-on for controlling a Epson projector, and
+got in touch with its author to see if we could join forces and make a
+Add-on with support for several projectors. To my pleasure, he was
+positive to the idea, and we set out to add InFocus support to his
+add-on, and make the add-on suitable for the official Kodi add-on
+repository.</p>
+
+<p>The Add-on is now working (for me, at least), with a few minor
+adjustments. The most important change I do relative to the master
+branch in the github repository is embedding the
+<a href="https://github.com/pyserial/pyserial">pyserial module</a> in
+the add-on. The long term solution is to make a "script" type
+pyserial module for Kodi, that can be pulled in as a dependency in
+Kodi. But until that in place, I embed it.</p>
+
+<p>The add-on can be configured to turn on the projector when Kodi
+starts, off when Kodi stops as well as turn the projector off when the
+screensaver start and on when the screesaver stops. It can also be
+told to set the projector source when turning on the projector.
+
+<p>If this sound interesting to you, check out
+<a href="https://github.com/fredrik-eriksson/kodi_projcontrol">the
+project github repository</a>. Perhaps you can send patches to
+support your projector too? As soon as we find time to wrap up the
+latest changes, it should be available for easy installation using any
+Kodi instance.</p>
+
+<p>For future improvements, I would like to add projector model
+detection and the ability to adjust the brightness level of the
+projector from within Kodi. We also need to figure out how to handle
+the cooling period of the projector. My projector refuses to turn on
+for 60 seconds after it was turned off. This is not handled well by
+the add-on at the moment.</p>
-<p><pre>
-% /usr/sbin/isenkram-autoinstall-firmware -l
-info: did not find any firmware files requested by loaded kernel modules. exiting
-%
-</pre></p>
-
-<p>The last few days I had a look at several of the around 250
-packages in Debian with udev rules. These seem like good candidates
-to install when a given hardware dongle is inserted, and I found
-several that should be proposed by isenkram. I have not had time to
-check all of them, but am happy to report that now there are 97
-packages packages mapped to hardware by Isenkram. 11 of these
-packages provide hardware mapping using AppStream, while the rest are
-listed in the modaliases file provided in isenkram.</p>
-
-<p>These are the packages with hardware mappings at the moment. The
-<strong>marked packages</strong> are also announcing their hardware
-support using AppStream, for everyone to use:</p>
-
-<p>air-quality-sensor, alsa-firmware-loaders, argyll,
-<strong>array-info</strong>, avarice, avrdude, b43-fwcutter,
-bit-babbler, bluez, bluez-firmware, <strong>brltty</strong>,
-<strong>broadcom-sta-dkms</strong>, calibre, cgminer, cheese, colord,
-<strong>colorhug-client</strong>, dahdi-firmware-nonfree, dahdi-linux,
-dfu-util, dolphin-emu, ekeyd, ethtool, firmware-ipw2x00, fprintd,
-fprintd-demo, <strong>galileo</strong>, gkrellm-thinkbat, gphoto2,
-gpsbabel, gpsbabel-gui, gpsman, gpstrans, gqrx-sdr, gr-fcdproplus,
-gr-osmosdr, gtkpod, hackrf, hdapsd, hdmi2usb-udev, hpijs-ppds, hplip,
-ipw3945-source, ipw3945d, kde-config-tablet, kinect-audio-setup,
-<strong>libnxt</strong>, libpam-fprintd, <strong>lomoco</strong>,
-madwimax, minidisc-utils, mkgmap, msi-keyboard, mtkbabel,
-<strong>nbc</strong>, <strong>nqc</strong>, nut-hal-drivers, ola,
-open-vm-toolbox, open-vm-tools, openambit, pcgminer, pcmciautils,
-pcscd, pidgin-blinklight, printer-driver-splix,
-<strong>pymissile</strong>, python-nxt, qlandkartegt,
-qlandkartegt-garmin, rosegarden, rt2x00-source, sispmctl,
-soapysdr-module-hackrf, solaar, squeak-plugins-scratch, sunxi-tools,
-<strong>t2n</strong>, thinkfan, thinkfinger-tools, tlp, tp-smapi-dkms,
-tp-smapi-source, tpb, tucnak, uhd-host, usbmuxd, viking,
-virtualbox-ose-guest-x11, w1retap, xawtv, xserver-xorg-input-vmmouse,
-xserver-xorg-input-wacom, xserver-xorg-video-qxl,
-xserver-xorg-video-vmware, yubikey-personalization and
-zd1211-firmware</p>
-
-<p>If you know of other packages, please let me know with a wishlist
-bug report against the isenkram-cli package, and ask the package
-maintainer to
-<a href="https://wiki.debian.org/AppStream/Guidelines">add AppStream
-metadata according to the guidelines</a> to provide the information
-for everyone. In time, I hope to get rid of the isenkram specific
-hardware mapping and depend exclusively on AppStream.</p>
-
-<p>Note, the AppStream metadata for broadcom-sta-dkms is matching too
-much hardware, and suggest that the package with with any ethernet
-card. See <a href="http://bugs.debian.org/838735">bug #838735</a> for
-the details. I hope the maintainer find time to address it soon. In
-the mean time I provide an override in isenkram.</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>
</description>
</item>
projects / homepage.git / blobdiff