X-Git-Url: http://pere.pagekite.me/gitweb/homepage.git/blobdiff_plain/c30ecc6ac781252aba5722ca7953cc4a4483f469..aa4069048e4b39f85304deb4c9abc90695b8441c:/blog/index.rss diff --git a/blog/index.rss b/blog/index.rss index 2cc8fa6f3c..e42e39614e 100644 --- a/blog/index.rss +++ b/blog/index.rss @@ -7,609 +7,634 @@ - Unlocking HTC Desire HD on Linux using unruu and fastboot - http://people.skolelinux.org/pere/blog/Unlocking_HTC_Desire_HD_on_Linux_using_unruu_and_fastboot.html - http://people.skolelinux.org/pere/blog/Unlocking_HTC_Desire_HD_on_Linux_using_unruu_and_fastboot.html - Thu, 7 Jul 2016 11:30:00 +0200 - <p>Yesterday, I tried to unlock a HTC Desire HD phone, and it proved -to be a slight challenge. Here is the recipe if I ever need to do it -again. It all started by me wanting to try the recipe to set up -<a href="https://blog.torproject.org/blog/mission-impossible-hardening-android-security-and-privacy">an -hardened Android installation</a> from the Tor project blog on a -device I had access to. It is a old mobile phone with a broken -microphone The initial idea had been to just -<a href="http://wiki.cyanogenmod.org/w/Install_CM_for_ace">install -CyanogenMod on it</a>, but did not quite find time to start on it -until a few days ago.</p> - -<p>The unlock process is supposed to be simple: (1) Boot into the boot -loader (press volume down and power at the same time), (2) select -'fastboot' before (3) connecting the device via USB to a Linux -machine, (4) request the device identifier token by running 'fastboot -oem get_identifier_token', (5) request the device unlocking key using -the <a href="http://www.htcdev.com/bootloader/">HTC developer web -site</a> and unlock the phone using the key file emailed to you.</p> - -<p>Unfortunately, this only work fi you have hboot version 2.00.0029 -or newer, and the device I was working on had 2.00.0027. This -apparently can be easily fixed by downloading a Windows program and -running it on your Windows machine, if you accept the terms Microsoft -require you to accept to use Windows - which I do not. So I had to -come up with a different approach. I got a lot of help from AndyCap -on #nuug, and would not have been able to get this working without -him.</p> - -<p>First I needed to extract the hboot firmware from -<a href="http://www.htcdev.com/ruu/PD9810000_Ace_Sense30_S_hboot_2.00.0029.exe">the -windows binary for HTC Desire HD</a> downloaded as 'the RUU' from HTC. -For this there is is <a href="https://github.com/kmdm/unruu/">a github -project named unruu</a> using libunshield. The unshield tool did not -recognise the file format, but unruu worked and extracted rom.zip, -containing the new hboot firmware and a text file describing which -devices it would work for.</p> - -<p>Next, I needed to get the new firmware into the device. For this I -followed some instructions -<a href="http://www.htc1guru.com/2013/09/new-ruu-zips-posted/">available -from HTC1Guru.com</a>, and ran these commands as root on a Linux -machine with Debian testing:</p> - -<p><pre> -adb reboot-bootloader -fastboot oem rebootRUU -fastboot flash zip rom.zip -fastboot flash zip rom.zip -fastboot reboot -</pre></p> - -<p>The flash command apparently need to be done twice to take effect, -as the first is just preparations and the second one do the flashing. -The adb command is just to get to the boot loader menu, so turning the -device on while holding volume down and the power button should work -too.</p> - -<p>With the new hboot version in place I could start following the -instructions on the HTC developer web site. I got the device token -like this:</p> - -<p><pre> -fastboot oem get_identifier_token 2>&1 | sed 's/(bootloader) //' -</pre> - -<p>And once I got the unlock code via email, I could use it like -this:</p> - -<p><pre> -fastboot flash unlocktoken Unlock_code.bin -</pre></p> - -<p>And with that final step in place, the phone was unlocked and I -could start stuffing the software of my own choosing into the device. -So far I only inserted a replacement recovery image to wipe the phone -before I start. We will see what happen next. Perhaps I should -install <a href="https://www.debian.org/">Debian</a> on it. :)</p> + Idea for storing trusted timestamps in a Noark 5 archive + http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html + http://people.skolelinux.org/pere/blog/Idea_for_storing_trusted_timestamps_in_a_Noark_5_archive.html + Wed, 7 Jun 2017 21:40:00 +0200 + <p><em>This is a copy of +<a href="https://lists.nuug.no/pipermail/nikita-noark/2017-June/000297.html">an +email I posted to the nikita-noark mailing list</a>. Please follow up +there if you would like to discuss this topic. The background is that +we are making a free software archive system based on the Norwegian +<a href="https://www.arkivverket.no/forvaltning-og-utvikling/regelverk-og-standarder/noark-standarden">Noark +5 standard</a> for government archives.</em></p> + +<p>I've been wondering a bit lately how trusted timestamps could be +stored in Noark 5. +<a href="https://en.wikipedia.org/wiki/Trusted_timestamping">Trusted +timestamps</a> can be used to verify that some information +(document/file/checksum/metadata) have not been changed since a +specific time in the past. This is useful to verify the integrity of +the documents in the archive.</p> + +<p>Then it occured to me, perhaps the trusted timestamps could be +stored as dokument variants (ie dokumentobjekt referered to from +dokumentbeskrivelse) with the filename set to the hash it is +stamping?</p> + +<p>Given a "dokumentbeskrivelse" with an associated "dokumentobjekt", +a new dokumentobjekt is associated with "dokumentbeskrivelse" with the +same attributes as the stamped dokumentobjekt except these +attributes:</p> + +<ul> + +<li>format -> "RFC3161" +<li>mimeType -> "application/timestamp-reply" +<li>formatDetaljer -> "&lt;source URL for timestamp service&gt;" +<li>filenavn -> "&lt;sjekksum&gt;.tsr" + +</ul> + +<p>This assume a service following +<a href="https://tools.ietf.org/html/rfc3161">IETF RFC 3161</a> is +used, which specifiy the given MIME type for replies and the .tsr file +ending for the content of such trusted timestamp. As far as I can +tell from the Noark 5 specifications, it is OK to have several +variants/renderings of a dokument attached to a given +dokumentbeskrivelse objekt. It might be stretching it a bit to make +some of these variants represent crypto-signatures useful for +verifying the document integrity instead of representing the dokument +itself.</p> + +<p>Using the source of the service in formatDetaljer allow several +timestamping services to be used. This is useful to spread the risk +of key compromise over several organisations. It would only be a +problem to trust the timestamps if all of the organisations are +compromised.</p> + +<p>The following oneliner on Linux can be used to generate the tsr +file. $input is the path to the file to checksum, and $sha256 is the +SHA-256 checksum of the file (ie the "<sjekksum>.tsr" value mentioned +above).</p> + +<p><blockquote><pre> +openssl ts -query -data "$inputfile" -cert -sha256 -no_nonce \ + | curl -s -H "Content-Type: application/timestamp-query" \ + --data-binary "@-" http://zeitstempel.dfn.de > $sha256.tsr +</pre></blockquote></p> + +<p>To verify the timestamp, you first need to download the public key +of the trusted timestamp service, for example using this command:</p> + +<p><blockquote><pre> +wget -O ca-cert.txt \ + https://pki.pca.dfn.de/global-services-ca/pub/cacert/chain.txt +</pre></blockquote></p> + +<p>Note, the public key should be stored alongside the timestamps in +the archive to make sure it is also available 100 years from now. It +is probably a good idea to standardise how and were to store such +public keys, to make it easier to find for those trying to verify +documents 100 or 1000 years from now. :)</p> + +<p>The verification itself is a simple openssl command:</p> + +<p><blockquote><pre> +openssl ts -verify -data $inputfile -in $sha256.tsr \ + -CAfile ca-cert.txt -text +</pre></blockquote></p> + +<p>Is there any reason this approach would not work? Is it somehow against +the Noark 5 specification?</p> - How to use the Signal app if you only have a land line (ie no mobile phone) - http://people.skolelinux.org/pere/blog/How_to_use_the_Signal_app_if_you_only_have_a_land_line__ie_no_mobile_phone_.html - http://people.skolelinux.org/pere/blog/How_to_use_the_Signal_app_if_you_only_have_a_land_line__ie_no_mobile_phone_.html - Sun, 3 Jul 2016 14:20:00 +0200 - <p>For a while now, I have wanted to test -<a href="https://whispersystems.org/">the Signal app</a>, as it is -said to provide end to end encrypted communication and several of my -friends and family are already using it. As I by choice do not own a -mobile phone, this proved to be harder than expected. And I wanted to -have the source of the client and know that it was the code used on my -machine. But yesterday I managed to get it working. I used the -Github source, compared it to the source in -<a href="https://chrome.google.com/webstore/detail/signal-private-messenger/bikioccmkafdpakkkcpdbppfkghcmihk?hl=en-US">the -Signal Chrome app</a> available from the Chrome web store, applied -patches to use the production Signal servers, started the app and -asked for the hidden "register without a smart phone" form. Here is -the recipe how I did it.</p> - -<p>First, I fetched the Signal desktop source from Github, using - -<pre> -git clone https://github.com/WhisperSystems/Signal-Desktop.git -</pre> - -<p>Next, I patched the source to use the production servers, to be -able to talk to other Signal users:</p> - -<pre> -cat &lt;&lt;EOF | patch -p0 -diff -ur ./js/background.js userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/background.js ---- ./js/background.js 2016-06-29 13:43:15.630344628 +0200 -+++ userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/background.js 2016-06-29 14:06:29.530300934 +0200 -@@ -47,8 +47,8 @@ - }); - }); - -- var SERVER_URL = 'https://textsecure-service-staging.whispersystems.org'; -- var ATTACHMENT_SERVER_URL = 'https://whispersystems-textsecure-attachments-staging.s3.amazonaws.com'; -+ var SERVER_URL = 'https://textsecure-service-ca.whispersystems.org:4433'; -+ var ATTACHMENT_SERVER_URL = 'https://whispersystems-textsecure-attachments.s3.amazonaws.com'; - var messageReceiver; - window.getSocketStatus = function() { - if (messageReceiver) { -diff -ur ./js/expire.js userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/expire.js ---- ./js/expire.js 2016-06-29 13:43:15.630344628 +0200 -+++ userdata/Default/Extensions/bikioccmkafdpakkkcpdbppfkghcmihk/0.15.0_0/js/expire.js2016-06-29 14:06:29.530300934 +0200 -@@ -1,6 +1,6 @@ - ;(function() { - 'use strict'; -- var BUILD_EXPIRATION = 0; -+ var BUILD_EXPIRATION = 1474492690000; - - window.extension = window.extension || {}; - -EOF -</pre> - -<p>The first part is changing the servers, and the second is updating -an expiration timestamp. This timestamp need to be updated regularly. -It is set 90 days in the future by the build process (Gruntfile.js). -The value is seconds since 1970 times 1000, as far as I can tell.</p> - -<p>Based on a tip and good help from the #nuug IRC channel, I wrote a -script to launch Signal in Chromium.</p> - -<pre> -#!/bin/sh -cd $(dirname $0) -mkdir -p userdata -exec chromium \ - --proxy-server="socks://localhost:9050" \ - --user-data-dir=`pwd`/userdata --load-and-launch-app=`pwd` -</pre> - -<p> The script start the app and configure Chromium to use the Tor -SOCKS5 proxy to make sure those controlling the Signal servers (today -Amazon and Whisper Systems) as well as those listening on the lines -will have a harder time location my laptop based on the Signal -connections if they use source IP address.</p> - -<p>When the script starts, one need to follow the instructions under -"Standalone Registration" in the CONTRIBUTING.md file in the git -repository. I right clicked on the Signal window to get up the -Chromium debugging tool, visited the 'Console' tab and wrote -'extension.install("standalone")' on the console prompt to get the -registration form. Then I entered by land line phone number and -pressed 'Call'. 5 seconds later the phone rang and a robot voice -repeated the verification code three times. After entering the number -into the verification code field in the form, I could start using -Signal from my laptop. - -<p>As far as I can tell, The Signal app will leak who is talking to -whom and thus who know who to those controlling the central server, -but such leakage is hard to avoid with a centrally controlled server -setup. It is something to keep in mind when using Signal - the -content of your chats are harder to intercept, but the meta data -exposing your contact network is available to people you do not know. -So better than many options, but not great. And sadly the usage is -connected to my land line, thus allowing those controlling the server -to associate it to my home and person. I would prefer it if only -those I knew could tell who I was on Signal. There are options -avoiding such information leakage, but most of my friends are not -using them, so I am stuck with Signal for now.</p> + Når nynorskoversettelsen svikter til eksamen... + http://people.skolelinux.org/pere/blog/N_r_nynorskoversettelsen_svikter_til_eksamen___.html + http://people.skolelinux.org/pere/blog/N_r_nynorskoversettelsen_svikter_til_eksamen___.html + Sat, 3 Jun 2017 08:20:00 +0200 + <p><a href="http://www.aftenposten.no/norge/Krever-at-elever-ma-fa-annullert-eksamen-etter-rot-med-oppgavetekster-622459b.html">Aftenposten +melder i dag</a> om feil i eksamensoppgavene for eksamen i politikk og +menneskerettigheter, der teksten i bokmåls og nynorskutgaven ikke var +like. Oppgaveteksten er gjengitt i artikkelen, og jeg ble nysgjerring +på om den fri oversetterløsningen +<a href="https://www.apertium.org/">Apertium</a> ville gjort en bedre +jobb enn Utdanningsdirektoratet. Det kan se slik ut.</p> + +<p>Her er bokmålsoppgaven fra eksamenen:</p> + +<blockquote> +<p>Drøft utfordringene knyttet til nasjonalstatenes og andre aktørers +rolle og muligheter til å håndtere internasjonale utfordringer, som +for eksempel flykningekrisen.</p> + +<p>Vedlegge er eksempler på tekster som kan gi relevante perspektiver +på temaet:</p> +<ol> +<li>Flykningeregnskapet 2016, UNHCR og IDMC +<li>«Grenseløst Europa for fall» A-Magasinet, 26. november 2015 +</ol> + +</blockquote> + +<p>Dette oversetter Apertium slik:</p> + +<blockquote> +<p>Drøft utfordringane knytte til nasjonalstatane sine og rolla til +andre aktørar og høve til å handtera internasjonale utfordringar, som +til dømes *flykningekrisen.</p> + +<p>Vedleggja er døme på tekster som kan gje relevante perspektiv på +temaet:</p> + +<ol> +<li>*Flykningeregnskapet 2016, *UNHCR og *IDMC</li> +<li>«*Grenseløst Europa for fall» A-Magasinet, 26. november 2015</li> +</ol> + +</blockquote> + +<p>Ord som ikke ble forstått er markert med stjerne (*), og trenger +ekstra språksjekk. Men ingen ord er forsvunnet, slik det var i +oppgaven elevene fikk presentert på eksamen. Jeg mistenker dog at +"andre aktørers rolle og muligheter til ..." burde vært oversatt til +"rolla til andre aktørar og deira høve til ..." eller noe slikt, men +det er kanskje flisespikking. Det understreker vel bare at det alltid +trengs korrekturlesning etter automatisk oversettelse.</p> - The new "best" multimedia player in Debian? - http://people.skolelinux.org/pere/blog/The_new__best__multimedia_player_in_Debian_.html - http://people.skolelinux.org/pere/blog/The_new__best__multimedia_player_in_Debian_.html - Mon, 6 Jun 2016 12:50:00 +0200 - <p>When I set out a few weeks ago to figure out -<a href="http://people.skolelinux.org/pere/blog/What_is_the_best_multimedia_player_in_Debian_.html">which -multimedia player in Debian claimed to support most file formats / -MIME types</a>, I was a bit surprised how varied the sets of MIME types -the various players claimed support for. The range was from 55 to 130 -MIME types. I suspect most media formats are supported by all -players, but this is not really reflected in the MimeTypes values in -their desktop files. There are probably also some bogus MIME types -listed, but it is hard to identify which one this is.</p> - -<p>Anyway, in the mean time I got in touch with upstream for some of -the players suggesting to add more MIME types to their desktop files, -and decided to spend some time myself improving the situation for my -favorite media player VLC. The fixes for VLC entered Debian unstable -yesterday. The complete list of MIME types can be seen on the -<a href="https://wiki.debian.org/DebianMultimedia/PlayerSupport">Multimedia -player MIME type support status</a> Debian wiki page.</p> - -<p>The new "best" multimedia player in Debian? It is VLC, followed by -totem, parole, kplayer, gnome-mpv, mpv, smplayer, mplayer-gui and -kmplayer. I am sure some of the other players desktop files support -several of the formats currently listed as working only with vlc, -toten and parole.</p> - -<p>A sad observation is that only 14 MIME types are listed as -supported by all the tested multimedia players in Debian in their -desktop files: audio/mpeg, audio/vnd.rn-realaudio, audio/x-mpegurl, -audio/x-ms-wma, audio/x-scpls, audio/x-wav, video/mp4, video/mpeg, -video/quicktime, video/vnd.rn-realvideo, video/x-matroska, -video/x-ms-asf, video/x-ms-wmv and video/x-msvideo. Personally I find -it sad that video/ogg and video/webm is not supported by all the media -players in Debian. As far as I can tell, all of them can handle both -formats.</p> + Epost inn som arkivformat i Riksarkivarens forskrift? + http://people.skolelinux.org/pere/blog/Epost_inn_som_arkivformat_i_Riksarkivarens_forskrift_.html + http://people.skolelinux.org/pere/blog/Epost_inn_som_arkivformat_i_Riksarkivarens_forskrift_.html + Thu, 27 Apr 2017 11:30:00 +0200 + <p>I disse dager, med frist 1. mai, har Riksarkivaren ute en høring på +sin forskrift. Som en kan se er det ikke mye tid igjen før fristen +som går ut på søndag. Denne forskriften er det som lister opp hvilke +formater det er greit å arkivere i +<a href="http://www.arkivverket.no/arkivverket/Offentleg-forvalting/Noark/Noark-5">Noark +5-løsninger</a> i Norge.</p> + +<p>Jeg fant høringsdokumentene hos +<a href="https://www.arkivrad.no/aktuelt/riksarkivarens-forskrift-pa-horing">Norsk +Arkivråd</a> etter å ha blitt tipset på epostlisten til +<a href="https://github.com/hiOA-ABI/nikita-noark5-core">fri +programvareprosjektet Nikita Noark5-Core</a>, som lager et Noark 5 +Tjenestegresesnitt. Jeg er involvert i Nikita-prosjektet og takket +være min interesse for tjenestegrensesnittsprosjektet har jeg lest en +god del Noark 5-relaterte dokumenter, og til min overraskelse oppdaget +at standard epost ikke er på listen over godkjente formater som kan +arkiveres. Høringen med frist søndag er en glimrende mulighet til å +forsøke å gjøre noe med det. Jeg holder på med +<a href="https://github.com/petterreinholdtsen/noark5-tester/blob/master/docs/hoering-arkivforskrift.tex">egen +høringsuttalelse</a>, og lurer på om andre er interessert i å støtte +forslaget om å tillate arkivering av epost som epost i arkivet.</p> + +<p>Er du igang med å skrive egen høringsuttalelse allerede? I så fall +kan du jo vurdere å ta med en formulering om epost-lagring. Jeg tror +ikke det trengs så mye. Her et kort forslag til tekst:</p> + +<p><blockquote> + + <p>Viser til høring sendt ut 2017-02-17 (Riksarkivarens referanse + 2016/9840 HELHJO), og tillater oss å sende inn noen innspill om + revisjon av Forskrift om utfyllende tekniske og arkivfaglige + bestemmelser om behandling av offentlige arkiver (Riksarkivarens + forskrift).</p> + + <p>Svært mye av vår kommuikasjon foregår i dag på e-post.  Vi + foreslår derfor at Internett-e-post, slik det er beskrevet i IETF + RFC 5322, + <a href="https://tools.ietf.org/html/rfc5322">https://tools.ietf.org/html/rfc5322</a>. bør + inn som godkjent dokumentformat.  Vi foreslår at forskriftens + oversikt over godkjente dokumentformater ved innlevering i § 5-16 + endres til å ta med Internett-e-post.</p> + +</blockquote></p> + +<p>Som del av arbeidet med tjenestegrensesnitt har vi testet hvordan +epost kan lagres i en Noark 5-struktur, og holder på å skrive et +forslag om hvordan dette kan gjøres som vil bli sendt over til +arkivverket så snart det er ferdig. De som er interesserte kan +<a href="https://github.com/petterreinholdtsen/noark5-tester/blob/master/docs/epostlagring.md">følge +fremdriften på web</a>.</p> + +<p>Oppdatering 2017-04-28: I dag ble høringuttalelsen jeg skrev + <a href="https://www.nuug.no/news/NUUGs_h_ringuttalelse_til_Riksarkivarens_forskrift.shtml">sendt + inn av foreningen NUUG</a>.</p> - A program should be able to open its own files on Linux - http://people.skolelinux.org/pere/blog/A_program_should_be_able_to_open_its_own_files_on_Linux.html - http://people.skolelinux.org/pere/blog/A_program_should_be_able_to_open_its_own_files_on_Linux.html - Sun, 5 Jun 2016 08:30:00 +0200 - <p>Many years ago, when koffice was fresh and with few users, I -decided to test its presentation tool when making the slides for a -talk I was giving for NUUG on Japhar, a free Java virtual machine. I -wrote the first draft of the slides, saved the result and went to bed -the day before I would give the talk. The next day I took a plane to -the location where the meeting should take place, and on the plane I -started up koffice again to polish the talk a bit, only to discover -that kpresenter refused to load its own data file. I cursed a bit and -started making the slides again from memory, to have something to -present when I arrived. I tested that the saved files could be -loaded, and the day seemed to be rescued. I continued to polish the -slides until I suddenly discovered that the saved file could no longer -be loaded into kpresenter. In the end I had to rewrite the slides -three times, condensing the content until the talk became shorter and -shorter. After the talk I was able to pinpoint the problem &ndash; -kpresenter wrote inline images in a way itself could not understand. -Eventually that bug was fixed and kpresenter ended up being a great -program to make slides. The point I'm trying to make is that we -expect a program to be able to load its own data files, and it is -embarrassing to its developers if it can't.</p> - -<p>Did you ever experience a program failing to load its own data -files from the desktop file browser? It is not a uncommon problem. A -while back I discovered that the screencast recorder -gtk-recordmydesktop would save an Ogg Theora video file the KDE file -browser would refuse to open. No video player claimed to understand -such file. I tracked down the cause being <tt>file --mime-type</tt> -returning the application/ogg MIME type, which no video player I had -installed listed as a MIME type they would understand. I asked for -<a href="http://bugs.gw.com/view.php?id=382">file to change its -behavour</a> and use the MIME type video/ogg instead. I also asked -several video players to add video/ogg to their desktop files, to give -the file browser an idea what to do about Ogg Theora files. After a -while, the desktop file browsers in Debian started to handle the -output from gtk-recordmydesktop properly.</p> - -<p>But history repeats itself. A few days ago I tested the music -system Rosegarden again, and I discovered that the KDE and xfce file -browsers did not know what to do with the Rosegarden project files -(*.rg). I've reported <a href="http://bugs.debian.org/825993">the -rosegarden problem to BTS</a> and a fix is commited to git and will be -included in the next upload. To increase the chance of me remembering -how to fix the problem next time some program fail to load its files -from the file browser, here are some notes on how to fix it.</p> - -<p>The file browsers in Debian in general operates on MIME types. -There are two sources for the MIME type of a given file. The output from -<tt>file --mime-type</tt> mentioned above, and the content of the -shared MIME type registry (under /usr/share/mime/). The file MIME -type is mapped to programs supporting the MIME type, and this -information is collected from -<a href="https://www.freedesktop.org/wiki/Specifications/desktop-entry-spec/">the -desktop files</a> available in /usr/share/applications/. If there is -one desktop file claiming support for the MIME type of the file, it is -activated when asking to open a given file. If there are more, one -can normally select which one to use by right-clicking on the file and -selecting the wanted one using 'Open with' or similar. In general -this work well. But it depend on each program picking a good MIME -type (preferably -<a href="http://www.iana.org/assignments/media-types/media-types.xhtml">a -MIME type registered with IANA</a>), file and/or the shared MIME -registry recognizing the file and the desktop file to list the MIME -type in its list of supported MIME types.</p> - -<p>The <tt>/usr/share/mime/packages/rosegarden.xml</tt> entry for -<a href="http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec">the -Shared MIME database</a> look like this:</p> - -<p><blockquote><pre> -&lt;?xml version="1.0" encoding="UTF-8"?&gt; -&lt;mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info"&gt; - &lt;mime-type type="audio/x-rosegarden"&gt; - &lt;sub-class-of type="application/x-gzip"/&gt; - &lt;comment&gt;Rosegarden project file&lt;/comment&gt; - &lt;glob pattern="*.rg"/&gt; - &lt;/mime-type&gt; -&lt;/mime-info&gt; -</pre></blockquote></p> - -<p>This states that audio/x-rosegarden is a kind of application/x-gzip -(it is a gzipped XML file). Note, it is much better to use an -official MIME type registered with IANA than it is to make up ones own -unofficial ones like the x-rosegarden type used by rosegarden.</p> - -<p>The desktop file of the rosegarden program failed to list -audio/x-rosegarden in its list of supported MIME types, causing the -file browsers to have no idea what to do with *.rg files:</p> - -<p><blockquote><pre> -% grep Mime /usr/share/applications/rosegarden.desktop -MimeType=audio/x-rosegarden-composition;audio/x-rosegarden-device;audio/x-rosegarden-project;audio/x-rosegarden-template;audio/midi; -X-KDE-NativeMimeType=audio/x-rosegarden-composition + Offentlig elektronisk postjournal blokkerer tilgang for utvalgte webklienter + http://people.skolelinux.org/pere/blog/Offentlig_elektronisk_postjournal_blokkerer_tilgang_for_utvalgte_webklienter.html + http://people.skolelinux.org/pere/blog/Offentlig_elektronisk_postjournal_blokkerer_tilgang_for_utvalgte_webklienter.html + Thu, 20 Apr 2017 13:00:00 +0200 + <p>Jeg oppdaget i dag at <a href="https://www.oep.no/">nettstedet som +publiserer offentlige postjournaler fra statlige etater</a>, OEP, har +begynt å blokkerer enkelte typer webklienter fra å få tilgang. Vet +ikke hvor mange det gjelder, men det gjelder i hvert fall libwww-perl +og curl. For å teste selv, kjør følgende:</p> + +<blockquote><pre> +% curl -v -s https://www.oep.no/pub/report.xhtml?reportId=3 2>&1 |grep '< HTTP' +< HTTP/1.1 404 Not Found +% curl -v -s --header 'User-Agent:Opera/12.0' https://www.oep.no/pub/report.xhtml?reportId=3 2>&1 |grep '< HTTP' +< HTTP/1.1 200 OK % -</pre></blockquote></p> - -<p>The fix was to add "audio/x-rosegarden;" at the end of the -MimeType= line.</p> - -<p>If you run into a file which fail to open the correct program when -selected from the file browser, please check out the output from -<tt>file --mime-type</tt> for the file, ensure the file ending and -MIME type is registered somewhere under /usr/share/mime/ and check -that some desktop file under /usr/share/applications/ is claiming -support for this MIME type. If not, please report a bug to have it -fixed. :)</p> +</pre></blockquote> + +<p>Her kan en se at tjenesten gir «404 Not Found» for curl i +standardoppsettet, mens den gir «200 OK» hvis curl hevder å være Opera +versjon 12.0. Offentlig elektronisk postjournal startet blokkeringen +2017-03-02.</p> + +<p>Blokkeringen vil gjøre det litt vanskeligere å maskinelt hente +informasjon fra oep.no. Kan blokkeringen være gjort for å hindre +automatisert innsamling av informasjon fra OEP, slik Pressens +Offentlighetsutvalg gjorde for å dokumentere hvordan departementene +hindrer innsyn i +<a href="http://presse.no/dette-mener-np/undergraver-offentlighetsloven/">rapporten +«Slik hindrer departementer innsyn» som ble publiserte i januar +2017</a>. Det virker usannsynlig, da det jo er trivielt å bytte +User-Agent til noe nytt.</p> + +<p>Finnes det juridisk grunnlag for det offentlige å diskriminere +webklienter slik det gjøres her? Der tilgang gis eller ikke alt etter +hva klienten sier at den heter? Da OEP eies av DIFI og driftes av +Basefarm, finnes det kanskje noen dokumenter sendt mellom disse to +aktørene man kan be om innsyn i for å forstå hva som har skjedd. Men +<a href="https://www.oep.no/search/result.html?period=dateRange&fromDate=01.01.2016&toDate=01.04.2017&dateType=documentDate&caseDescription=&descType=both&caseNumber=&documentNumber=&sender=basefarm&senderType=both&documentType=all&legalAuthority=&archiveCode=&list2=196&searchType=advanced&Search=Search+in+records">postjournalen +til DIFI viser kun to dokumenter</a> det siste året mellom DIFI og +Basefarm. +<a href="https://www.mimesbronn.no/request/blokkering_av_tilgang_til_oep_fo">Mimes brønn neste</a>, +tenker jeg.</p> - Tor - from its creators mouth 11 years ago - http://people.skolelinux.org/pere/blog/Tor___from_its_creators_mouth_11_years_ago.html - http://people.skolelinux.org/pere/blog/Tor___from_its_creators_mouth_11_years_ago.html - Sat, 28 May 2016 14:20:00 +0200 - <p>A little more than 11 years ago, one of the creators of Tor, and -the current President of <a href="https://www.torproject.org/">the Tor -project</a>, Roger Dingledine, gave a talk for the members of the -<a href="http://www.nuug.no/">Norwegian Unix User group</a> (NUUG). A -video of the talk was recorded, and today, thanks to the great help -from David Noble, I finally was able to publish the video of the talk -on Frikanalen, the Norwegian open channel TV station where NUUG -currently publishes its talks. You can -<a href="http://frikanalen.no/se">watch the live stream using a web -browser</a> with WebM support, or check out the recording on the video -on demand page for the talk -"<a href="http://beta.frikanalen.no/video/625599">Tor: Anonymous -communication for the US Department of Defence...and you.</a>".</p> - -<p>Here is the video included for those of you using browsers with -HTML video and Ogg Theora support:</p> - -<p><video width="70%" poster="http://simula.gunkies.org/media/625599/large_thumb/20050421-tor-frikanalen.jpg" controls> - <source src="http://simula.gunkies.org/media/625599/theora/20050421-tor-frikanalen.ogv" type="video/ogg"/> -</video></p> - -<p>I guess the gist of the talk can be summarised quite simply: If you -want to help the military in USA (and everyone else), use Tor. :)</p> + Free software archive system Nikita now able to store documents + http://people.skolelinux.org/pere/blog/Free_software_archive_system_Nikita_now_able_to_store_documents.html + http://people.skolelinux.org/pere/blog/Free_software_archive_system_Nikita_now_able_to_store_documents.html + Sun, 19 Mar 2017 08:00:00 +0100 + <p>The <a href="https://github.com/hiOA-ABI/nikita-noark5-core">Nikita +Noark 5 core project</a> is implementing the Norwegian standard for +keeping an electronic archive of government documents. +<a href="http://www.arkivverket.no/arkivverket/Offentlig-forvaltning/Noark/Noark-5/English-version">The +Noark 5 standard</a> document the requirement for data systems used by +the archives in the Norwegian government, and the Noark 5 web interface +specification document a REST web service for storing, searching and +retrieving documents and metadata in such archive. I've been involved +in the project since a few weeks before Christmas, when the Norwegian +Unix User Group +<a href="https://www.nuug.no/news/NOARK5_kjerne_som_fri_programvare_f_r_epostliste_hos_NUUG.shtml">announced +it supported the project</a>. I believe this is an important project, +and hope it can make it possible for the government archives in the +future to use free software to keep the archives we citizens depend +on. But as I do not hold such archive myself, personally my first use +case is to store and analyse public mail journal metadata published +from the government. I find it useful to have a clear use case in +mind when developing, to make sure the system scratches one of my +itches.</p> + +<p>If you would like to help make sure there is a free software +alternatives for the archives, please join our IRC channel +(<a href="irc://irc.freenode.net/%23nikita"">#nikita on +irc.freenode.net</a>) and +<a href="https://lists.nuug.no/mailman/listinfo/nikita-noark">the +project mailing list</a>.</p> + +<p>When I got involved, the web service could store metadata about +documents. But a few weeks ago, a new milestone was reached when it +became possible to store full text documents too. Yesterday, I +completed an implementation of a command line tool +<tt>archive-pdf</tt> to upload a PDF file to the archive using this +API. The tool is very simple at the moment, and find existing +<a href="https://en.wikipedia.org/wiki/Fonds">fonds</a>, series and +files while asking the user to select which one to use if more than +one exist. Once a file is identified, the PDF is associated with the +file and uploaded, using the title extracted from the PDF itself. The +process is fairly similar to visiting the archive, opening a cabinet, +locating a file and storing a piece of paper in the archive. Here is +a test run directly after populating the database with test data using +our API tester:</p> + +<p><blockquote><pre> +~/src//noark5-tester$ ./archive-pdf mangelmelding/mangler.pdf +using arkiv: Title of the test fonds created 2017-03-18T23:49:32.103446 +using arkivdel: Title of the test series created 2017-03-18T23:49:32.103446 + + 0 - Title of the test case file created 2017-03-18T23:49:32.103446 + 1 - Title of the test file created 2017-03-18T23:49:32.103446 +Select which mappe you want (or search term): 0 +Uploading mangelmelding/mangler.pdf + PDF title: Mangler i spesifikasjonsdokumentet for NOARK 5 Tjenestegrensesnitt + File 2017/1: Title of the test case file created 2017-03-18T23:49:32.103446 +~/src//noark5-tester$ +</pre></blockquote></p> + +<p>You can see here how the fonds (arkiv) and serie (arkivdel) only had +one option, while the user need to choose which file (mappe) to use +among the two created by the API tester. The <tt>archive-pdf</tt> +tool can be found in the git repository for the API tester.</p> + +<p>In the project, I have been mostly working on +<a href="https://github.com/petterreinholdtsen/noark5-tester">the API +tester</a> so far, while getting to know the code base. The API +tester currently use +<a href="https://en.wikipedia.org/wiki/HATEOAS">the HATEOAS links</a> +to traverse the entire exposed service API and verify that the exposed +operations and objects match the specification, as well as trying to +create objects holding metadata and uploading a simple XML file to +store. The tester has proved very useful for finding flaws in our +implementation, as well as flaws in the reference site and the +specification.</p> + +<p>The test document I uploaded is a summary of all the specification +defects we have collected so far while implementing the web service. +There are several unclear and conflicting parts of the specification, +and we have +<a href="https://github.com/petterreinholdtsen/noark5-tester/tree/master/mangelmelding">started +writing down</a> the questions we get from implementing it. We use a +format inspired by how <a href="http://www.opengroup.org/austin/">The +Austin Group</a> collect defect reports for the POSIX standard with +<a href="http://www.opengroup.org/austin/mantis.html">their +instructions for the MANTIS defect tracker system</a>, in lack of an official way to structure defect reports for Noark 5 (our first submitted defect report was a <a href="https://github.com/petterreinholdtsen/noark5-tester/blob/master/mangelmelding/sendt/2017-03-15-mangel-prosess.md">request for a procedure for submitting defect reports</a> :). + +<p>The Nikita project is implemented using Java and Spring, and is +fairly easy to get up and running using Docker containers for those +that want to test the current code base. The API tester is +implemented in Python.</p> - Isenkram with PackageKit support - new version 0.23 available in Debian unstable - http://people.skolelinux.org/pere/blog/Isenkram_with_PackageKit_support___new_version_0_23_available_in_Debian_unstable.html - http://people.skolelinux.org/pere/blog/Isenkram_with_PackageKit_support___new_version_0_23_available_in_Debian_unstable.html - Wed, 25 May 2016 10:20:00 +0200 - <p><a href="https://tracker.debian.org/pkg/isenkram">The isenkram -system</a> is a user-focused solution in Debian for handling hardware -related packages. The idea is to have a database of mappings between -hardware and packages, and pop up a dialog suggesting for the user to -install the packages to use a given hardware dongle. Some use cases -are when you insert a Yubikey, it proposes to install the software -needed to control it; when you insert a braille reader list it -proposes to install the packages needed to send text to the reader; -and when you insert a ColorHug screen calibrator it suggests to -install the driver for it. The system work well, and even have a few -command line tools to install firmware packages and packages for the -hardware already in the machine (as opposed to hotpluggable hardware).</p> - -<p>The system was initially written using aptdaemon, because I found -good documentation and example code on how to use it. But aptdaemon -is going away and is generally being replaced by -<a href="http://www.freedesktop.org/software/PackageKit/">PackageKit</a>, -so Isenkram needed a rewrite. And today, thanks to the great patch -from my college Sunil Mohan Adapa in the FreedomBox project, the -rewrite finally took place. I've just uploaded a new version of -Isenkram into Debian Unstable with the patch included, and the default -for the background daemon is now to use PackageKit. To check it out, -install the <tt>isenkram</tt> package and insert some hardware dongle -and see if it is recognised.</p> - -<p>If you want to know what kind of packages isenkram would propose for -the machine it is running on, you can check out the isenkram-lookup -program. This is what it look like on a Thinkpad X230:</p> + Detecting NFS hangs on Linux without hanging yourself... + http://people.skolelinux.org/pere/blog/Detecting_NFS_hangs_on_Linux_without_hanging_yourself___.html + http://people.skolelinux.org/pere/blog/Detecting_NFS_hangs_on_Linux_without_hanging_yourself___.html + Thu, 9 Mar 2017 15:20:00 +0100 + <p>Over the years, administrating thousand of NFS mounting linux +computers at the time, I often needed a way to detect if the machine +was experiencing NFS hang. If you try to use <tt>df</tt> or look at a +file or directory affected by the hang, the process (and possibly the +shell) will hang too. So you want to be able to detect this without +risking the detection process getting stuck too. It has not been +obvious how to do this. When the hang has lasted a while, it is +possible to find messages like these in dmesg:</p> + +<p><blockquote> +nfs: server nfsserver not responding, still trying +<br>nfs: server nfsserver OK +</blockquote></p> + +<p>It is hard to know if the hang is still going on, and it is hard to +be sure looking in dmesg is going to work. If there are lots of other +messages in dmesg the lines might have rotated out of site before they +are noticed.</p> + +<p>While reading through the nfs client implementation in linux kernel +code, I came across some statistics that seem to give a way to detect +it. The om_timeouts sunrpc value in the kernel will increase every +time the above log entry is inserted into dmesg. And after digging a +bit further, I discovered that this value show up in +/proc/self/mountstats on Linux.</p> + +<p>The mountstats content seem to be shared between files using the +same file system context, so it is enough to check one of the +mountstats files to get the state of the mount point for the machine. +I assume this will not show lazy umounted NFS points, nor NFS mount +points in a different process context (ie with a different filesystem +view), but that does not worry me.</p> + +<p>The content for a NFS mount point look similar to this:</p> <p><blockquote><pre> -% isenkram-lookup -bluez -cheese -fprintd -fprintd-demo -gkrellm-thinkbat -hdapsd -libpam-fprintd -pidgin-blinklight -thinkfan -tleds -tp-smapi-dkms -tp-smapi-source -tpb -%p +[...] +device /dev/mapper/Debian-var mounted on /var with fstype ext3 +device nfsserver:/mnt/nfsserver/home0 mounted on /mnt/nfsserver/home0 with fstype nfs statvers=1.1 + opts: rw,vers=3,rsize=65536,wsize=65536,namlen=255,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,soft,nolock,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=129.240.3.145,mountvers=3,mountport=4048,mountproto=udp,local_lock=all + age: 7863311 + caps: caps=0x3fe7,wtmult=4096,dtsize=8192,bsize=0,namlen=255 + sec: flavor=1,pseudoflavor=1 + events: 61063112 732346265 1028140 35486205 16220064 8162542 761447191 71714012 37189 3891185 45561809 110486139 4850138 420353 15449177 296502 52736725 13523379 0 52182 9016896 1231 0 0 0 0 0 + bytes: 166253035039 219519120027 0 0 40783504807 185466229638 11677877 45561809 + RPC iostats version: 1.0 p/v: 100003/3 (nfs) + xprt: tcp 925 1 6810 0 0 111505412 111480497 109 2672418560317 0 248 53869103 22481820 + per-op statistics + NULL: 0 0 0 0 0 0 0 0 + GETATTR: 61063106 61063108 0 9621383060 6839064400 453650 77291321 78926132 + SETATTR: 463469 463470 0 92005440 66739536 63787 603235 687943 + LOOKUP: 17021657 17021657 0 3354097764 4013442928 57216 35125459 35566511 + ACCESS: 14281703 14290009 5 2318400592 1713803640 1709282 4865144 7130140 + READLINK: 125 125 0 20472 18620 0 1112 1118 + READ: 4214236 4214237 0 715608524 41328653212 89884 22622768 22806693 + WRITE: 8479010 8494376 22 187695798568 1356087148 178264904 51506907 231671771 + CREATE: 171708 171708 0 38084748 46702272 873 1041833 1050398 + MKDIR: 3680 3680 0 773980 993920 26 23990 24245 + SYMLINK: 903 903 0 233428 245488 6 5865 5917 + MKNOD: 80 80 0 20148 21760 0 299 304 + REMOVE: 429921 429921 0 79796004 61908192 3313 2710416 2741636 + RMDIR: 3367 3367 0 645112 484848 22 5782 6002 + RENAME: 466201 466201 0 130026184 121212260 7075 5935207 5961288 + LINK: 289155 289155 0 72775556 67083960 2199 2565060 2585579 + READDIR: 2933237 2933237 0 516506204 13973833412 10385 3190199 3297917 + READDIRPLUS: 1652839 1652839 0 298640972 6895997744 84735 14307895 14448937 + FSSTAT: 6144 6144 0 1010516 1032192 51 9654 10022 + FSINFO: 2 2 0 232 328 0 1 1 + PATHCONF: 1 1 0 116 140 0 0 0 + COMMIT: 0 0 0 0 0 0 0 0 + +device binfmt_misc mounted on /proc/sys/fs/binfmt_misc with fstype binfmt_misc +[...] </pre></blockquote></p> -<p>The hardware mappings come from several places. The preferred way -is for packages to announce their hardware support using -<a href="https://www.freedesktop.org/software/appstream/docs/">the -cross distribution appstream system</a>. -See -<a href="http://people.skolelinux.org/pere/blog/tags/isenkram/">previous -blog posts about isenkram</a> to learn how to do that.</p> +<p>The key number to look at is the third number in the per-op list. +It is the number of NFS timeouts experiences per file system +operation. Here 22 write timeouts and 5 access timeouts. If these +numbers are increasing, I believe the machine is experiencing NFS +hang. Unfortunately the timeout value do not start to increase right +away. The NFS operations need to time out first, and this can take a +while. The exact timeout value depend on the setup. For example the +defaults for TCP and UDP mount points are quite different, and the +timeout value is affected by the soft, hard, timeo and retrans NFS +mount options.</p> + +<p>The only way I have been able to get working on Debian and RedHat +Enterprise Linux for getting the timeout count is to peek in /proc/. +But according to +<ahref="http://docs.oracle.com/cd/E19253-01/816-4555/netmonitor-12/index.html">Solaris +10 System Administration Guide: Network Services</a>, the 'nfsstat -c' +command can be used to get these timeout values. But this do not work +on Linux, as far as I can tell. I +<ahref="http://bugs.debian.org/857043">asked Debian about this</a>, +but have not seen any replies yet.</p> + +<p>Is there a better way to figure out if a Linux NFS client is +experiencing NFS hangs? Is there a way to detect which processes are +affected? Is there a way to get the NFS mount going quickly once the +network problem causing the NFS hang has been cleared? I would very +much welcome some clues, as we regularly run into NFS hangs.</p> - Discharge rate estimate in new battery statistics collector for Debian - http://people.skolelinux.org/pere/blog/Discharge_rate_estimate_in_new_battery_statistics_collector_for_Debian.html - http://people.skolelinux.org/pere/blog/Discharge_rate_estimate_in_new_battery_statistics_collector_for_Debian.html - Mon, 23 May 2016 09:35:00 +0200 - <p>Yesterday I updated the -<a href="https://tracker.debian.org/pkg/battery-stats">battery-stats -package in Debian</a> with a few patches sent to me by skilled and -enterprising users. There were some nice user and visible changes. -First of all, both desktop menu entries now work. A design flaw in -one of the script made the history graph fail to show up (its PNG was -dumped in ~/.xsession-errors) if no controlling TTY was available. -The script worked when called from the command line, but not when -called from the desktop menu. I changed this to look for a DISPLAY -variable or a TTY before deciding where to draw the graph, and now the -graph window pop up as expected.</p> - -<p>The next new feature is a discharge rate estimator in one of the -graphs (the one showing the last few hours). New is also the user of -colours showing charging in blue and discharge in red. The percentages -of this graph is relative to last full charge, not battery design -capacity.</p> - -<p align="center"><img src="http://people.skolelinux.org/pere/blog/images/2016-05-23-battery-stats-rate.png"/></p> - -<p>The other graph show the entire history of the collected battery -statistics, comparing it to the design capacity of the battery to -visualise how the battery life time get shorter over time. The red -line in this graph is what the previous graph considers 100 percent: - -<p align="center"><img src="http://people.skolelinux.org/pere/blog/images/2016-05-23-battery-stats-history.png"/></p> - -<p>In this graph you can see that I only charge the battery to 80 -percent of last full capacity, and how the capacity of the battery is -shrinking. :(</p> - -<p>The last new feature is in the collector, which now will handle -more hardware models. On some hardware, Linux power supply -information is stored in /sys/class/power_supply/ACAD/, while the -collector previously only looked in /sys/class/power_supply/AC/. Now -both are checked to figure if there is power connected to the -machine.</p> - -<p>If you are interested in how your laptop battery is doing, please -check out the -<a href="https://tracker.debian.org/pkg/battery-stats">battery-stats</a> -in Debian unstable, or rebuild it on Jessie to get it working on -Debian stable. :) The upstream source is available from <a -href="https://github.com/petterreinholdtsen/battery-stats">github</a>. -Patches are very welcome.</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> + How does it feel to be wiretapped, when you should be doing the wiretapping... + http://people.skolelinux.org/pere/blog/How_does_it_feel_to_be_wiretapped__when_you_should_be_doing_the_wiretapping___.html + http://people.skolelinux.org/pere/blog/How_does_it_feel_to_be_wiretapped__when_you_should_be_doing_the_wiretapping___.html + Wed, 8 Mar 2017 11:50:00 +0100 + <p>So the new president in the United States of America claim to be +surprised to discover that he was wiretapped during the election +before he was elected president. He even claim this must be illegal. +Well, doh, if it is one thing the confirmations from Snowden +documented, it is that the entire population in USA is wiretapped, one +way or another. Of course the president candidates were wiretapped, +alongside the senators, judges and the rest of the people in USA.</p> + +<p>Next, the Federal Bureau of Investigation ask the Department of +Justice to go public rejecting the claims that Donald Trump was +wiretapped illegally. I fail to see the relevance, given that I am +sure the surveillance industry in USA believe they have all the legal +backing they need to conduct mass surveillance on the entire +world.</p> + +<p>There is even the director of the FBI stating that he never saw an +order requesting wiretapping of Donald Trump. That is not very +surprising, given how the FISA court work, with all its activity being +secret. Perhaps he only heard about it?</p> + +<p>What I find most sad in this story is how Norwegian journalists +present it. In a news reports the other day in the radio from the +Norwegian National broadcasting Company (NRK), I heard the journalist +claim that 'the FBI denies any wiretapping', while the reality is that +'the FBI denies any illegal wiretapping'. There is a fundamental and +important difference, and it make me sad that the journalists are +unable to grasp it.</p> + +<p><strong>Update 2017-03-13:</strong> Look like +<a href="https://theintercept.com/2017/03/13/rand-paul-is-right-nsa-routinely-monitors-americans-communications-without-warrants/">The +Intercept report that US Senator Rand Paul confirm what I state above</a>.</p> - French edition of Lawrence Lessigs book Cultura Libre on Amazon and Barnes & Noble - http://people.skolelinux.org/pere/blog/French_edition_of_Lawrence_Lessigs_book_Cultura_Libre_on_Amazon_and_Barnes___Noble.html - http://people.skolelinux.org/pere/blog/French_edition_of_Lawrence_Lessigs_book_Cultura_Libre_on_Amazon_and_Barnes___Noble.html - Sat, 21 May 2016 10:50:00 +0200 - <p>A few weeks ago the French paperback edition of Lawrence Lessigs -2004 book Cultura Libre was published. Today I noticed that the book -is now available from book stores. You can now buy it from -<a href="http://www.amazon.com/Culture-Libre-French-Lawrence-Lessig/dp/8269018260">Amazon</a> -($19.99), -<a href="http://www.barnesandnoble.com/w/culture-libre-lawrence-lessig/1123776705">Barnes -& Noble</a> ($?) and as always from -<a href="http://www.lulu.com/shop/lawrence-lessig/culture-libre/paperback/product-22645082.html">Lulu.com</a> -($19.99). The revenue is donated to the Creative Commons project. If -you buy from Lulu.com, they currently get $10.59, while if you buy -from one of the book stores most of the revenue go to the book store -and the Creative Commons project get much (not sure how much -less).</p> - -<p>I was a bit surprised to discover that there is a kindle edition -sold by Amazon Digital Services LLC on Amazon. Not quite sure how -that edition was created, but if you want to download a electronic -edition (PDF, EPUB, Mobi) generated from the same files used to create -the paperback edition, they are -<a href="https://github.com/petterreinholdtsen/free-culture-lessig">available -from github</a>.</p> + Norwegian Bokmål translation of The Debian Administrator's Handbook complete, proofreading in progress + http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_translation_of_The_Debian_Administrator_s_Handbook_complete__proofreading_in_progress.html + http://people.skolelinux.org/pere/blog/Norwegian_Bokm_l_translation_of_The_Debian_Administrator_s_Handbook_complete__proofreading_in_progress.html + Fri, 3 Mar 2017 14:50:00 +0100 + <p>For almost a year now, we have been working on making a Norwegian +Bokmål edition of <a href="https://debian-handbook.info/">The Debian +Administrator's Handbook</a>. Now, thanks to the tireless effort of +Ole-Erik, Ingrid and Andreas, the initial translation is complete, and +we are working on the proof reading to ensure consistent language and +use of correct computer science terms. The plan is to make the book +available on paper, as well as in electronic form. For that to +happen, the proof reading must be completed and all the figures need +to be translated. If you want to help out, get in touch.</p> + +<p><a href="http://people.skolelinux.org/pere/debian-handbook/debian-handbook-nb-NO.pdf">A + +fresh PDF edition</a> in A4 format (the final book will have smaller +pages) of the book created every morning is available for +proofreading. If you find any errors, please +<a href="https://hosted.weblate.org/projects/debian-handbook/">visit +Weblate and correct the error</a>. The +<a href="http://l.github.io/debian-handbook/stat/nb-NO/index.html">state +of the translation including figures</a> is a useful source for those +provide Norwegian bokmål screen shots and figures.</p> - I want the courts to be involved before the police can hijack a news site DNS domain (#domstolkontroll) - http://people.skolelinux.org/pere/blog/I_want_the_courts_to_be_involved_before_the_police_can_hijack_a_news_site_DNS_domain___domstolkontroll_.html - http://people.skolelinux.org/pere/blog/I_want_the_courts_to_be_involved_before_the_police_can_hijack_a_news_site_DNS_domain___domstolkontroll_.html - Thu, 19 May 2016 14:00:00 +0200 - <p>I just donated to the -<a href="http://www.nuug.no/dns-beslag-donasjon.shtml">NUUG defence -"fond"</a> to fund the effort in Norway to get the seizure of the news -site popcorn-time.no tested in court. I hope everyone that agree with -me will do the same.</p> - -<p>Would you be worried if you knew the police in your country could -hijack DNS domains of news sites covering free software system without -talking to a judge first? I am. What if the free software system -combined search engine lookups, bittorrent downloads and video playout -and was called Popcorn Time? Would that affect your view? It still -make me worried.</p> - -<p>In March 2016, the Norwegian police seized (as in forced NORID to -change the IP address pointed to by it to one controlled by the -police) the DNS domain popcorn-time.no, without any supervision from -the courts. I did not know about the web site back then, and assumed -the courts had been involved, and was very surprised when I discovered -that the police had hijacked the DNS domain without asking a judge for -permission first. I was even more surprised when I had a look at -<a href="https://web.archive.org/web/*/http://popcorn-time.no">the web -site content on the Internet Archive</A>, and only found news coverage -about Popcorn Time, not any material published without the right -holders permissions.</p> - -<p>The seizure was widely covered in the Norwegian press (see for -example <a href="http://www.hegnar.no/Nyheter/Naeringsliv/2016/03/Popcorn-time.no-beslaglagt-av-OEkokrim">Hegnar Online</a> and -<a href="http://itavisen.no/2016/03/08/okokrim-har-beslaglagt-popcorn-time-no/">ITavisen<a/> -and -<a href="http://www.nrk.no/kultur/okokrim-gar-til-aksjon-mot-popcorn-time-1.12842452">NRK</a>), -at first due to the press release sent out by Økokrim, but then based -on -<a href="http://blogg.torvund.net/2016/03/09/okokrims-beslag-i-domenet-popcorn-time-no/">protests -from the law professor Olav Torvund</a> and -<a href="http://www.klassekampen.no/article/20160311/ARTICLE/160319995">lawyer -Jon Wessel-Aas</a>. It even got some -<a href="https://torrentfreak.com/norwegian-authorities-sued-over-popcorn-time-domain-seizure-160418/">coverage -on TorrentFreak</a>.</p> - -<p>I -<a href="http://people.skolelinux.org/pere/blog/NUUG_contests_Norwegian_police_DNS_seizure_of_popcorn_time_no.html"> -wrote about the case a month ago</a>, when the -<a href="http://www.nuug.no/">Norwegian Unix User Group</a> (NUUG), -where I am an active member, decided to ask the courts to test this seizure. -The request was denied, but NUUG and its co-requestor EFN have not -given up, and now they are rallying for support to get the seizure -legally challenged. They accept both bank and Bitcoin transfer for -those that want to support the request.</p> - -<p>If you as me believe news sites about free software should not be -censored, even if the free software have both legal and illegal -applications, and that DNS hijacking should be tested by the courts, I -suggest you <a href="http://www.nuug.no/dns-beslag-donasjon.shtml">show -your support by donating to NUUG</a>.</a> + Unlimited randomness with the ChaosKey? + http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html + http://people.skolelinux.org/pere/blog/Unlimited_randomness_with_the_ChaosKey_.html + Wed, 1 Mar 2017 20:50:00 +0100 + <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> - Debian now with ZFS on Linux included - http://people.skolelinux.org/pere/blog/Debian_now_with_ZFS_on_Linux_included.html - http://people.skolelinux.org/pere/blog/Debian_now_with_ZFS_on_Linux_included.html - Thu, 12 May 2016 07:30:00 +0200 - <p>Today, after many years of hard work from many people, -<a href="http://zfsonlinux.org/">ZFS for Linux</a> finally entered -Debian. The package status can be seen on -<a href="https://tracker.debian.org/pkg/zfs-linux">the package tracker -for zfs-linux</a>. and -<a href="https://qa.debian.org/developer.php?login=pkg-zfsonlinux-devel@lists.alioth.debian.org">the -team status page</a>. If you want to help out, please join us. -<a href="http://anonscm.debian.org/gitweb/?p=pkg-zfsonlinux/zfs.git">The -source code</a> is available via git on Alioth. It would also be -great if you could help out with -<a href="https://tracker.debian.org/pkg/dkms">the dkms package</a>, as -it is an important piece of the puzzle to get ZFS working.</p> + Detect OOXML files with undefined behaviour? + http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html + http://people.skolelinux.org/pere/blog/Detect_OOXML_files_with_undefined_behaviour_.html + Tue, 21 Feb 2017 00:20:00 +0100 + <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>