Search Results: "cas"

16 January 2016

Russ Allbery: podlators 4.05

Getting all the details right in a highly portable Perl core module that tries to support very old versions of Perl is tricky! And I clearly didn't do a good job of documenting previous decisions. This release reintroduces pod2man.PL and pod2text.PL generator scripts to get the right Perl invocation. I thought ExtUtils::MakeMaker and Module::Build now took care of this, but apparently they only take care of this on UNIX platforms, not on the non-UNIX platforms that require special execution logic. Thanks to a patch by Niko Tyni, this version of Pod::Man also falls back to non-utf8 behavior if the utf8 option is specified but the Encode module doesn't exist. This can help with some cross-build situations. I also finally figured out the problem with occasional test failures on random platforms: I was trying to clean up the temporary directory used by tests after each test, but the CPAN test systems run all the tests in parallel, so the tests were racing with each other. This release just leaves the temporary directory around and deletes it in make clean. You can get the latest version from the podlators distribution page.

15 January 2016

Ian Wienand: Australia, ipv6 and dd-wrt

It seems that other than Internode, no Australian ISP has any details at all about native IPv6 deployment. Locally I am on Optus HFC, which I believe has been sold to the NBN, who I believe have since discovered that it is not quite what they thought it was. i.e. I think they have more problems than rolling out IPv6 and I won't hold my breath. So the only other option is to use a tunnel of some sort, and it seems there is really only one option with local presence via SixXS. There are other options, notably He.net, but they do not have Australian tunnel-servers. SixXS is the only one I could find with a tunnel in Sydney. So first sign up for an account there. The process was rather painless and my tunnel was provided quickly. After getting this, I got dd-wrt configured and working on my Netgear WNDR3700 V4. Here's my terse guide, cobbled together from other bits and pieces I found. I'm presuming you have a recent dd-wrt build that includes the aiccu tool to create the tunnel, and are pretty familiar with logging into it, etc. Firstly, on dd-wrt make sure you have JFFS2 turned on for somewhere to install scripts. Go Administration, JFFS2 Support, Internal Flash Storage, Enabled. Next, add the aiccu config file to /jffs/etc/aiccu.conf
# AICCU Configuration
# Login information
username USERNAME
password PASSWORD
# Protocol and server listed on your tunnel
protocol tic
server tic.sixxs.net
# Interface names to use
ipv6_interface sixxs
# The tunnel_id to use
# (only required when there are multiple tunnels in the list)
#tunnel_id <your tunnel id>
# Be verbose?
verbose false
# Daemonize?
daemonize true
# Require TLS?
requiretls true
# Set default route?
defaultroute true
Now you can add a script to bring up the tunnel and interface to /jffs/config/sixxs.ipup (make sure you make it executable) where you replace your tunnel address in the ip commands.
# wait until time is synced
while [  date +%Y  -eq 1970 ]; do
sleep 5
done
# check if aiccu is already running
if [ -n " ps grep etc/aiccu grep -v grep " ]; then
aiccu stop
sleep 1
killall aiccu
fi
# start aiccu
sleep 3
aiccu start /jffs/etc/aiccu.conf
sleep 3
ip -6 addr add 2001:....:....:....::/64 dev br0
ip -6 route add 2001:....:....:....::/64 dev br0
sleep 5
#### BEGIN FIREWALL RULES ####
WAN_IF=sixxs
LAN_IF=br0
#flush tables
ip6tables -F
#define policy
ip6tables -P INPUT DROP
ip6tables -P FORWARD DROP
ip6tables -P OUTPUT ACCEPT
# Input to the router
# Allow all loopback traffic
ip6tables -A INPUT -i lo -j ACCEPT
#Allow unrestricted access on internal network
ip6tables -A INPUT -i $LAN_IF -j ACCEPT
#Allow traffic related to outgoing connections
ip6tables -A INPUT -i $WAN_IF -m state --state RELATED,ESTABLISHED -j ACCEPT
# for multicast ping replies from link-local addresses (these don't have an
# associated connection and would otherwise be marked INVALID)
ip6tables -A INPUT -p icmpv6 --icmpv6-type echo-reply -s fe80::/10 -j ACCEPT
# Allow some useful ICMPv6 messages
ip6tables -A INPUT -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT
ip6tables -A INPUT -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT
ip6tables -A INPUT -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT
ip6tables -A INPUT -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT
ip6tables -A INPUT -p icmpv6 --icmpv6-type echo-request -j ACCEPT
ip6tables -A INPUT -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
# Forwarding through from the internal network
# Allow unrestricted access out from the internal network
ip6tables -A FORWARD -i $LAN_IF -j ACCEPT
# Allow some useful ICMPv6 messages
ip6tables -A FORWARD -p icmpv6 --icmpv6-type destination-unreachable -j ACCEPT
ip6tables -A FORWARD -p icmpv6 --icmpv6-type packet-too-big -j ACCEPT
ip6tables -A FORWARD -p icmpv6 --icmpv6-type time-exceeded -j ACCEPT
ip6tables -A FORWARD -p icmpv6 --icmpv6-type parameter-problem -j ACCEPT
ip6tables -A FORWARD -p icmpv6 --icmpv6-type echo-request -j ACCEPT
ip6tables -A FORWARD -p icmpv6 --icmpv6-type echo-reply -j ACCEPT
#Allow traffic related to outgoing connections
ip6tables -A FORWARD -i $WAN_IF -m state --state RELATED,ESTABLISHED -j ACCEPT
Now you can reboot, or run the script, and it should bring the tunnel up and you should be correclty firewalled such that packets get out, but nobody can get in. Back to the web-interface, you can now enable IPv6 with Setup, IPV6, Enable. You leave "IPv6 Type" as Native IPv6 from ISP. Then I enabled Radvd and added a custom config in the text-box to get DNS working with google DNS on hosts with:
interface br0
 
AdvSendAdvert on;
prefix 2001:....:....:....::/64
  
  ;
 RDNSS 2001:4860:4860::8888 2001:4860:4860::8844
  
  ;
 ;
(again, replace the prefix with your own) That is pretty much it; at this point, you should have an IPv6 network and it's most likely that all your network devices will "just work" with it. I got full scores on the IPv6 test sites on a range of devices. Unfortunately, even a geographically close tunnel still really kills latency; compare these two traceroutes:
$ mtr -r -c 1 google.com
Start: Fri Jan 15 14:51:18 2016
HOST: jj                          Loss%   Snt   Last   Avg  Best  Wrst StDev
1.  -- 2001:....:....:....::      0.0%     1    1.4   1.4   1.4   1.4   0.0
2.  -- gw-163.syd-01.au.sixxs.ne  0.0%     1   12.0  12.0  12.0  12.0   0.0
3.  -- ausyd01.sixxs.net          0.0%     1   13.5  13.5  13.5  13.5   0.0
4.  -- sixxs.sydn01.occaid.net    0.0%     1   13.7  13.7  13.7  13.7   0.0
5.  -- 15169.syd.equinix.com      0.0%     1   11.5  11.5  11.5  11.5   0.0
6.  -- 2001:4860::1:0:8613        0.0%     1   14.1  14.1  14.1  14.1   0.0
7.  -- 2001:4860::8:0:79a0        0.0%     1  115.1 115.1 115.1 115.1   0.0
8.  -- 2001:4860::8:0:8877        0.0%     1  183.6 183.6 183.6 183.6   0.0
9.  -- 2001:4860::1:0:66d6        0.0%     1  196.6 196.6 196.6 196.6   0.0
10. -- 2001:4860:0:1::72d         0.0%     1  189.7 189.7 189.7 189.7   0.0
11. -- kul01s07-in-x09.1e100.net  0.0%     1  194.9 194.9 194.9 194.9   0.0
$ mtr -4 -r -c 1 google.com
Start: Fri Jan 15 14:51:46 2016
HOST: jj                          Loss%   Snt   Last   Avg  Best  Wrst StDev
1. -- gateway                    0.0%     1    1.3   1.3   1.3   1.3   0.0
2. -- 10.50.0.1                  0.0%     1   11.0  11.0  11.0  11.0   0.0
3. -- ???                       100.0     1    0.0   0.0   0.0   0.0   0.0
4. -- ???                       100.0     1    0.0   0.0   0.0   0.0   0.0
5. -- ???                       100.0     1    0.0   0.0   0.0   0.0   0.0
6. -- riv4-ge4-1.gw.optusnet.co  0.0%     1   12.1  12.1  12.1  12.1   0.0
7. -- 198.142.187.20             0.0%     1   10.4  10.4  10.4  10.4   0.0
When you watch what is actually using ipv6 (the ipvfoo plugin for Chrome is pretty cool, it shows you what requests are going where), it's mostly all just traffic to really big sites (Google/Google Analytics, Facebook, Youtube, etc) who have figured out IPv6. Since these are exactly the type of places that have made efforts to get caching as close as possible to you (Google's mirror servers are within Optus' network, for example) and so you're really shooting yourself in the foot going around it using an external tunnel. The other thing is that I'm often hitting IPv6 mirrors and downloading larger things for work stuff (distro updates, git clones, image downloads, etc) which is slower and wasting someone else's bandwith for really no benefit. So while it's pretty cool to have an IPv6 address (and a fun experiment) I think I'm going to turn it off. One positive was that after running with it for about a month, nothing has broken -- which suggests that most consumer level gear in a typical house (phones, laptops, TVs, smart-watches, etc) is either ready or ignores it gracefully. Bring on native IPv6!

14 January 2016

Lunar: Reproducible builds: week 37 in Stretch cycle

What happened in the reproducible builds effort between January 3rd and January 9th 2016:

Toolchain fixes David Bremner uploaded dh-elpa/0.0.18 which adds a --fix-autoload-date option (on by default) to take autoload dates from changelog. Lunar updated and sent the patch adding the generation of .buildinfo to dpkg.

Packages fixed The following packages have become reproducible due to changes in their build dependencies: aggressive-indent-mode, circe, company-mode, db4o, dh-elpa, editorconfig-emacs, expand-region-el, f-el, geiser, hyena, js2-mode, markdown-mode, mono-fuse, mysql-connector-net, openbve, regina-normal, sml-mode, vala-mode-el. The following packages became reproducible after getting fixed: Some uploads fixed some reproducibility issues, but not all of them: Patches submitted which have not made their way to the archive yet:
  • #809780 on flask-restful by Chris Lamb: implement support for SOURCE_DATE_EPOCH in the build system.
  • #810259 on avfs by Chris Lamb: implement support for SOURCE_DATE_EPOCH in the build system.
  • #810509 on apt by Mattia Rizzolo: ensure a stable file order is given to the linker.

reproducible.debian.net Add 2 more armhf build nodes provided by Vagrant Cascadian. This added 7 more armhf builder jobs. We now run around 900 tests of armhf packages each day. (h01ger) The footer of each page now indicates by which Jenkins jobs build it. (h01ger)

diffoscope development diffoscope 45 has been released on January 4th. It features huge memory improvements when comparing large files, several fixes of squashfs related issues that prevented comparing two Tails images, and improve the file list of tar and cpio archive to be more precise and consistent over time. It also fixes a typo that prevented the Mach-O to work (Rainer M ller), improves comparisons of ELF files when specified on the command line, and solves a few more encoding issues.

Package reviews 134 reviews have been removed, 30 added and 37 updated in the previous week. 20 new fail to build from source issues were reported by Chris Lamb and Chris West. prebuilder will now skip installing diffoscope to save time if the build results are identical. (Reiner Herrmann)

Jan Wagner: Running Ghost blogging platform via Docker

When I was thinking about using Ghost, I did read the installations guide and then I just closed the browser window.
I didn't wanted to install npm, yet another package manager, and just hack init scripts. Not speaking about updating Ghost itself. Some weeks later I did think about using Ghost again. It has a nice Markdown Editor and some nice other features. Since everybody is jumping on the Docker band wagon actually and I had used it for some tests already, I thought trying the Ghost Docker image might be a good idea. If you are interested into how I did that, read on. I suppose you have installed a stock Debian Jessie.

Installing Docker

Pulling the Docker image Just in case you didn't, you need to (re)start docker to work with service docker restart
# docker pull ghost

Making Ghost (container image) run forever I did not like systemd in the first place for many reasons. But in some circumstances it makes sense. In case of handling a Docker container, using a systemd unit file makes life much easier.
# mkdir -p /srv/docker/ghost/
# cat > /etc/systemd/system/ghost.service << EOF
[Unit]
Description=GHost Service  
After=docker.service  
Requires=docker.service
[Service]
ExecStartPre=-/usr/bin/docker kill ghost  
ExecStartPre=-/usr/bin/docker rm ghost  
ExecStartPre=-/usr/bin/docker pull ghost  
ExecStart=/usr/bin/docker run  --name ghost --publish 2368:2368 --env 'NODE_ENV=production' --volume /srv/docker/ghost/:/var/lib/ghost ghost  
ExecStop=/usr/bin/docker stop ghost
[Install]
WantedBy=multi-user.target  
EOF  
# systemctl enable ghost && systemctl daemon-reload && systemctl start ghost 
This will start your container on start and even is looking for a new Docker image and is fetching it, if needed. If you don't like this behavior, just comment out the line in the config and reread it with systemctl daemon-reload. Now you should have listening something on port 2368:
# netstat -tapn   grep 2368
tcp6       0      0 :::2368                 :::*                    LISTEN      7061/docker-proxy  
Update: Jo l Dinel did send me a mail, that starting your Docker container with --restart always will take care that it is brought up again if Docker or (even) the whole system will get restarted. For real I used that before and might be a lightweight solution, but I liked the systemd unit file solution a lot more.

Persistent Data Thanks to the Docker mount option you can find all your data in /srv/docker/ghost/. So your blog will still have content, even if the ghost Docker images is updated:
# ls /srv/docker/ghost/
apps  config.js  data  images  themes  

Accessing the container To kick your ghost into production, it might be useful if you make it available on port 80 at least. This can be done for example by changing your Docker publish configuration or adding a DNAT to your firewall. But I would recommand using a proxy in front of your Docker container. This might be part of one of my next articles.

Rapha&#235;l Hertzog: Working as a paid LTS contributor

A Debian LTS logoWhile the details about how to join the set of paid contributors have always been public (here) we did not advertise this fact very much outside of the people already interested in LTS (and thus subscribed to debian-lts@lists.debian.org). But right now we would like to have a few more paid contributors on board and I m thus posting this call for volunteers. Who can apply? You need to meet those requirements: Even though Freexian is located in France and requires you to provide invoice in EUR, there are no conditions on your nationality or country of residence. For contributors outside of the Euro zone, Freexian is using Transferwise to pay them with minimal currency conversion costs (Paypal is also possible if nothing else works). The rate offered to paid contributors is the same for all (75 EUR/hour), it s based on a correct rate for independent contractors in western Europe. If the rate is very high for your own country, then be happy to be able to invoice Freexian at this rate and use this opportunity to work less (for money) and contribute more to Debian on your (now copious) free time. How does the work look like? If you apply, you will have to send us an SSH key so that you can have access to the internal git repository used for work. It contains a ledger file to track the hours funded by sponsors and how they have been dispatched to the various contributors. You can always know how many hours are assigned to you, how many can be invoiced, and so on. You will have to update it once a month to record the work you did (and indicate us where the report has been published). The repository also contains a README with many explanations about the workflow (how hours are dispatched, the delay you have to publish your report, etc) and a small helper script (./find-work) to match up the pending updates (registered in dla-needed.txt) with the popularity of the package among the sponsors. Now the work itself is relatively well documented in the LTS wiki. You will have to provide updates for packages that need an update. You have some freedom in selecting the packages but at some point you will have to work on packages that you don t know that are written in a language that you have almost not used. So you must be able to go out of your comfort zone and still do a good work. You must also be able to multi-task because in some cases you will get stuck on a particular update and you will have to seek help from the upstream developer (or from the Debian package maintainer). Don t expect to be able to do all your work hours in a single run thus don t wait until the last days of the month. Start early and dispatch your work hours over the month. From time to time, you will also have to handle the LTS frontdesk for one week. During this week, you need to spend a bit of time every day to triage the new CVE, to respond to questions on the mailing list, and to sponsor updates prepared by volunteers who do not have upload rights. Questions? Ask your questions in the comments and I will update this section with your questions and our answers. What if I have no prior experience with security updates? Start getting some experience. The LTS and security teams are open for anyone to join. Read their documentation and provide some updates that other contributors can sponsor. Before accepting you as paid contributor, we generally ask you to prepare one or two DLA on your free time just to make sure that you know the workflow and that you are up to the task. What if I have only X hours available for paid LTS work? In the git repository there s a file where you document how many work hours you can handle. You might get less than this amount, but we generally never assign less than 8 hours (to make sure that you can handle one complicated update from start to end, or your possible week of LTS frontdesk). You can adjust it each month or even opt-out if you are not available for whatever reason. But once you have been assigned work hours, it s important to actually do the work that you requested! How do I apply? Get in touch with me (as documented).

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13 January 2016

Norbert Preining: Ian Buruma: Wages of Guilt

Since moving to Japan, I got more and more interested in history, especially the recent history of the 20th century. The book I just finished, Ian Buruma (Wiki, home page) Wages of Guilt Memories of War in Germany and Japan (Independent, NYRB), has been a revelation for me. As an Austrian living in Japan, I am experiencing the discrepancy between these two countries with respect to their treatment of war legacy practically daily, and many of my blog entries revolve around the topic of Japanese non-reconciliation.
Willy Brandt went down on his knees in the Warsaw ghetto, after a functioning democracy had been established in the Federal Republic of Germany, not before. But Japan, shielded from the evil world, has grown into an Oskar Matzerath: opportunistic, stunted, and haunted by demons, which it tries to ignore by burying them in the sand, like Oskar s drum.
Ian Buruma, Wages of Guilt, Clearing Up the Ruins
Buruma-Wages_of_Guilt The comparison of Germany and Japan with respect to their recent history as laid out in Buruma s book throws a spotlight on various aspects of the psychology of German and Japanese population, while at the same time not falling into the easy trap of explaining everything with difference in the guilt culture. A book of great depth and broad insights everyone having even the slightest interest in these topics should read.
This difference between (West) German and Japanese textbooks is not just a matter of detail; it shows a gap in perception.
Ian Buruma, Wages of Guilt, Romance of the Ruins
Only thinking about giving a halfway full account of this book is something impossible for me. The sheer amount of information, both on the German and Japanese side, is impressive. His incredible background (studies of Chinese literature and Japanese movie!) and long years as journalist, editor, etc, enriches the book with facets normally not available: In particular his knowledge of both the German and Japanese movie history, and the reflection of history in movies, were complete new aspects for me (see my recent post (in Japanese)). The book is comprised of four parts: The first with the chapters War Against the West and Romance of the Ruins; the second with the chapters Auschwitz, Hiroshima, and Nanking; the third with History on Trial, Textbook Resistance, and Memorials, Museums, and Monuments; and the last part with A Normal Country, Two Normal Towns, and Clearing Up the Ruins. Let us look at the chapters in turn: The boook somehow left me with a bleak impression of Japanese post-war times as well as Japanese future. Having read other books about the political ignorance in Japan (Norma Field s In the realm of a dying emperor, or the Chibana history), Buruma s characterization of Japanese politics is striking. He couldn t foresee the recent changes in legislation pushed through by the Abe government actually breaking the constitution, or the rewriting of history currently going on with respect to comfort women and Nanking. But reading his statement about Article Nine of the constitution and looking at the changes in political attitude, I am scared about where Japan is heading to:
The Nanking Massacre, for leftists and many liberals too, is the main symbol of Japanese militarism, supported by the imperial (and imperialist) cult. Which is why it is a keystone of postwar pacifism. Article Nine of the constitution is necessary to avoid another Nanking Massacre. The nationalist right takes the opposite view. To restore the true identity of Japan, the emperor must be reinstated as a religious head of state, and Article Nine must be revised to make Japan a legitimate military power again. For this reason, the Nanking Massacre, or any other example of extreme Japanese aggression, has to be ignored, softened, or denied.
Ian Buruma, Wages of Guilt, Nanking
While there are signs of resistance in the streets of Japan (Okinawa and the Hanako bay, the demonstrations against secrecy law and reversion of the constitution), we are still to see a change influenced by the people in a country ruled and distributed by oligarchs. I don t think there will be another Nanking Massacre in the near future, but Buruma s books shows that we are heading back to a nationalistic regime similar to pre-war times, just covered with a democratic veil to distract critics.
I close with several other quotes from the book that caught my attention: In the preface and introduction:
[ ] mainstream conservatives made a deliberate attempt to distract people s attention from war and politics by concentrating on economic growth.
The curious thing was that much of what attracted Japanese to Germany before the war Prussian authoritarianism, romantic nationalism, pseudo-scientific racialism had lingered in Japan while becoming distinctly unfashionable in Germany.
In Romance of the Ruins:
The point of all this is that Ikeda s promise of riches was the final stage of what came to be known as the reverse course, the turn away from a leftist, pacifist, neutral Japan a Japan that would never again be involved in any wars, that would resist any form of imperialism, that had, in short, turned its back for good on its bloody past. The Double Your Incomes policy was a deliberate ploy to draw public attention away from constitutional issues.
In Hiroshima:
The citizens of Hiroshima were indeed victims, primarily of their own military rulers. But when a local group of peace activists petitioned the city of Hiroshima in 1987 to incorporate the history of Japanese aggression into the Peace Memorial Museum, the request was turned down. The petition for an Aggressors Corner was prompted by junior high school students from Osaka, who had embarrassed Peace Museum officials by asking for an explanation about Japanese responsibility for the war.
The history of the war, or indeed any history, is indeed not what the Hiroshima spirit is about. This is why Auschwitz is the only comparison that is officially condoned. Anything else is too controversial, too much part of the flow of history .
In Nanking, by the governmental pseudo-historian Tanaka:
Unlike in Europe or China, writes Tanaka, you won t find one instance of planned, systematic murder in the entire history of Japan. This is because the Japanese have a different sense of values from the Chinese or the Westerners.
In History on Trial:
In 1950, Becker wrote that few things have done more to hinder true historical self-knowledge in Germany than the war crimes trials. He stuck to this belief. Becker must be taken seriously, for he is not a right-wing apologist for the Nazi past, but an eminent liberal.
There never were any Japanese war crimes trials, nor is there a Japanese Ludwigsburg. This is partly because there was no exact equivalent of the Holocaust. Even though the behavior of Japanese troops was often barbarous, and the psychological consequences of State Shinto and emperor worship were frequently as hysterical as Nazism, Japanese atrocities were part of a military campaign, not a planned genocide of a people that included the country s own citizens. And besides, those aspects of the war that were most revolting and furthest removed from actual combat, such as the medical experiments on human guinea pigs (known as logs ) carried out by Unit 731 in Manchuria, were passed over during the Tokyo trial. The knowledge compiled by the doctors of Unit 731 of freezing experiments, injection of deadly diseases, vivisections, among other things was considered so valuable by the Americans in 1945 that the doctors responsible were allowed to go free in exchange for their data.
Some Japanese have suggested that they should have conducted their own war crimes trials. The historian Hata Ikuhiko thought the Japanese leaders should have been tried according to existing Japanese laws, either in military or in civil courts. The Japanese judges, he believed, might well have been more severe than the Allied tribunal in Tokyo. And the consequences would have been healthier. If found guilty, the spirits of the defendants would not have ended up being enshrined at Yasukuni. The Tokyo trial, he said, purified the crimes of the accused and turned them into martyrs. If they had been tried in domestic courts, there is a good chance the real criminals would have been flushed out.
After it was over, the Nippon Times pointed out the flaws of the trial, but added that the Japanese people must ponder over why it is that there has been such a discrepancy between what they thought and what the rest of the world accepted almost as common knowledge. This is at the root of the tragedy which Japan brought upon herself.
Emperor Hirohito was not Hitler; Hitler was no mere Shrine. But the lethal consequences of the emperor-worshipping system of irresponsibilities did emerge during the Tokyo trial. The savagery of Japanese troops was legitimized, if not driven, by an ideology that did not include a Final Solution but was as racialist as Hider s National Socialism. The Japanese were the Asian Herrenvolk, descended from the gods.
Emperor Hirohito, the shadowy figure who changed after the war from navy uniforms to gray suits, was not personally comparable to Hitler, but his psychological role was remarkably similar.
In fact, MacArthur behaved like a traditional Japanese strongman (and was admired for doing so by many Japanese), using the imperial symbol to enhance his own power. As a result, he hurt the chances of a working Japanese democracy and seriously distorted history. For to keep the emperor in place (he could at least have been made to resign), Hirohito s past had to be freed from any blemish; the symbol had to be, so to speak, cleansed from what had been done in its name.
In Memorials, Museums, and Monuments:
If one disregards, for a moment, the differences in style between Shinto and Christianity, the Yasukuni Shrine, with its relics, its sacred ground, its bronze paeans to noble sacrifice, is not so very different from many European memorials after World War I. By and large, World War II memorials in Europe and the United States (though not the Soviet Union) no longer glorify the sacrifice of the fallen soldier. The sacrificial cult and the romantic elevation of war to a higher spiritual plane no longer seemed appropriate after Auschwitz. The Christian knight, bearing the cross of king and country, was not resurrected. But in Japan, where the war was still truly a war (not a Holocaust), and the symbolism still redolent of religious exultation, such shrines as Yasukuni still carry the torch of nineteenth-century nationalism. Hence the image of the nation owing its restoration to the sacrifice of fallen soldiers.
In A Normal Country:
The mayor received a letter from a Shinto priest in which the priest pointed out that it was un-Japanese to demand any more moral responsibility from the emperor than he had already taken. Had the emperor not demonstrated his deep sorrow every year, on the anniversary of Japan s surrender? Besides, he wrote, it was wrong to have spoken about the emperor in such a manner, even as the entire nation was deeply worried about his health. Then he came to the main point: It is a common error among Christians and people with Western inclinations, including so-called intellectuals, to fail to grasp that Western societies and Japanese society are based on fundamentally different religious concepts . . . Forgetting this premise, they attempt to place a Western structure on a Japanese foundation. I think this kind of mistake explains the demand for the emperor to bear full responsibility.
In Two Normal Towns:
The bust of the man caught my attention, but not because it was in any way unusual; such busts of prominent local figures can be seen everywhere in Japan. This one, however, was particularly grandiose. Smiling across the yard, with a look of deep satisfaction over his many achievements, was Hatazawa Kyoichi. His various functions and titles were inscribed below his bust. He had been an important provincial bureaucrat, a pillar of the sumo wrestling establishment, a member of various Olympic committees, and the recipient of some of the highest honors in Japan. The song engraved on the smooth stone was composed in praise of his rich life. There was just one small gap in Hatazawa s life story as related on his monument: the years from 1941 to 1945 were missing. Yet he had not been idle then, for he was the man in charge of labor at the Hanaoka mines.
In Clearing Up the Ruins:
But the question in American minds was understandable: could one trust a nation whose official spokesmen still refused to admit that their country had been responsible for starting a war? In these Japanese evasions there was something of the petulant child, stamping its foot, shouting that it had done nothing wrong, because everybody did it.
Japan seems at times not so much a nation of twelve-year-olds, to repeat General MacArthur s phrase, as a nation of people longing to be twelve-year-olds, or even younger, to be at that golden age when everything was secure and responsibility and conformity were not yet required.
For General MacArthur was right: in 1945, the Japanese people were political children. Until then, they had been forced into a position of complete submission to a state run by authoritarian bureaucrats and military men, and to a religious cult whose high priest was also formally chief of the armed forces and supreme monarch of the empire.
I saw Jew S ss that same year, at a screening for students of the film academy in Berlin. This showing, too, was followed by a discussion. The students, mostly from western Germany, but some from the east, were in their early twenties. They were dressed in the international uniform of jeans, anoraks, and work shirts. The professor was a man in his forties, a 68er named Karsten Witte. He began the discussion by saying that he wanted the students to concentrate on the aesthetics of the film more than the story. To describe the propaganda, he said, would simply be banal: We all know the what, so let s talk about the how. I thought of my fellow students at the film school in Tokyo more than fifteen years before. How many of them knew the what of the Japanese war in Asia.

12 January 2016

Antoine Beaupr : The Downloadable Internet

How corporations killed the web I have read with fascination what we would have called before a blog post, except it was featured on The Guardian: Iran's blogfather: Facebook, Instagram and Twitter are killing the web The "blogfather" is Hossein Derakshan or h0d3r, an author from Teheran that was jailed for almost a decade for his blogging. The article is very interesting both because it shows how fast things changed in the last few years, technology-wise, but more importantly, how content-free the web have become, where Facebook's last acquisition, Instagram, is not even censored by Iran. Those platforms have stopped being censored, not because of democratic progress but because they have become totally inoffensive (in the case of Iran) or become a tool of surveillance for the government and targeted advertisement for companies (in the case of, well, most of the world). This struck a chord, personally, at the political level: we are losing control of the internet (if we ever had it). The defeat isn't directly political: we have some institutions like ICANN and the IETF that we can still have an effect on, even if only at the technological level. The defeat is economic, and, of course, through economy comes enormous power. That defeat meant that we have first lost free and open access to the internet (yes, dialup used to be free) and then free hosting of our content (no, Google and Facebook are not free, you are the product). This marked a major change in the way content is treated online. H0d3r explains this as the shift from a link-based internet to a stream-based internet, a "deparure from a books-internet towards a television-internet". I have been warning about this "television-internet" in my talks and conversation for a while and with Netflix taking the crown off Youtube (and making you pay for it, of course), we can assuredly say that H0d3r is right and the television, far from disappearing, is finally being resurrected and taking over the internet.

The Downloadable internet and open standards But I would like to add to that: it is not merely that we had "links" before. We had, and still have, open standards. This made the internet "downloadable" (and by extension, uploadable) and decentralized. (In fact, I still remember my earlier days on the web when I would actually download images (as in "right-click" and "Save as..." images, not just have the browser download and display it on the fly). I would download images because they were big! It could take a minute or sometimes more to download images on older modems. Later, I would do the same with music: I would download WAV files before the rise of the MP3 format, of which I ended up building a significant collection (just fair use copies from friends and owned CDs, of course) and eventually video files.) The downloadable internet is what still allows me to type this article in a text editor, without internet access, while reading H0d3r's blog post on my e-reader, because I downloaded his article off an RSS feed. It is what makes it possible for anyone to download a full copy of this blog post and connected web pages as a git repository and this way get the full history of modifications on all the pages, but also be able to edit it offline and push modifications back in. Wikipedia is downloadable (there are even offline apps for your phone). Open standards like RSS feeds and HTML are downloadable. Heck, even the Internet Archive is downloadable (and I mean, all of it, not just the parts you want), surprisingly enough.

The app-based internet and proprietary software App-based websites like Google Plus and Facebook are not really downloadable. They are meant to be browsed through an app, so what you actually see through your web browser is really more an application, downloaded software than a downloaded piece of content. If you turn off Javascript, you will see that visiting Facebook actually shows no content: everything is downloaded on the fly by an application itself downloaded, on the fly, by your browser. In a way, your browser has become an operating system that runs proprietary, untrusted and unverified applications from the web. (The software is generally completely proprietary, except some frameworks that are published as free software in what looks like the lenient act of a godly king, but is actually more an economic decision of a clever corporation which outsources, for free, R&D and testing to the larger free software community. The real "secret sauce" is basically always proprietary, if only so that we don't freak out on stuff like PRISM that reports everything we do to the government.) Technology is political. This new "app design" is not a simple optimization or an cosmetic accident of a fancy engineer: by moving content through an application, Facebook, Twitter and the like can see exactly what you do on a web page, what you actually read (as opposed to what you click on) and how long. By adding a proprietary interface between you and the content online, the advertisement-surveillance complex can track every move you make online. This is a very fine-tuned surveillance system, and because of the App, you cannot escape it. You cannot share the content outside of Facebook, as you can't download it. Or at least, it's not obvious how you can. Projects like youtube-dl are doing an amazing job reverse-engineering what is becoming the proprietary Youtube streaming protocol, which is constantly changing and is not really documented. But it's a hack: it's a Sisyphus struggle which is bound to fail, and it does, all the time, until we figure out how to either turn those corporations into good netizens respecting and contributing to open standards (unlikely) or destroy those corporations (most likely). You are trapped in their walled garden. No wonder internet.org is Facebook only: for most people nowadays, the internet is the web, and the web is Facebook, Twitter and Google, or an iPad with a bunch of apps, each their own cute little walled garden, crafted just for you. If you think you like the Internet, you should really reconsider what you are watching, what you are consuming, or rather, how it is consuming you. There are alternatives. Facebook is a though nut to crack for free software activists because we lack the critical mass. But Facebook it is also an addiction for a lot of people, and spending less time on that spying machine could be a great improvement for you I am sure. For everything else, we have good free software alternatives and open standards, use them. "Big brother ain't watching you, you're watching him." - CRASS, Nineteen Eighty Bore (audio)

Russell Coker: Sociological Images 2015

3 men 1 women on lift sign The above sign was at the Melbourne Docks in December 2014 when I was returning from a cruise. I have no idea why there are 3 men and 1 woman on the sign (and a dock worker was also surprised when I explained why I was photographing it). I wonder whether a sign that had 3 women and 1 man would ever have been installed or not noticed if it was installed. rules for asking questions at LCA2015 At the start of the first day of LCA 2015 the above was displayed at the keynote as a flow-chart for whether someone should ask a question at a lecture. Given that the first real item in the list is that a question should fit in a tweet I think it was inspired by my blog post about the length of conference questions [1]. Astronomy Miniconf suggestions for delegates At the introduction to the Astronomy Miniconf the above slide was displayed. In addition to referencing the flow-chart for asking questions it recommends dimming laptop screens (among other things). sign saying men to the left because women are always right The above sign was at a restaurant in Auckland in January 2015. I thought that sort of sexist joke went out of fashion a few decades ago. gendered nerf weaponary The above photo is from a Melbourne department store in February 2015. Why gender a nerf gun? That just doesn t make sense. Also it appeared that the only nerf crossbow was the purple/pink one, is a crossbow considered feminine nowadays? Picture of Angela appropriating Native American clothing The above picture is a screen-shot of one of the Talking Angela series of Android games from March. Appropriating the traditional clothing of marginalised groups is a bad thing. People of Native American heritage who want to wear their traditional clothing face discrimination when they do so, when white people play dress-up in clothing that is a parody of Native American style it s really offensive. The site Racialicious.com has a tag for articles about appropriation [2]. The above was in a library advertising an Ebook reader. In this case they didn t even have pointlessly gendered products they just had pointlessly gendered adverts for the same product. They also perpetuate the myth that only girls read vampire books and only boys read about space. Also why is the girl lying down to read while the boy is sitting up? Above is an Advent calendar on sale in a petrol station. Having end of year holiday presents that have nothing to do with religious festivals makes sense. But Advent is a religious observance. I think this would be a better candidate for war on Christmas paranoia than a coffee cup of the wrong colour. The above photo is of boys and girls pipette suckers. Pointlessly gendered recreational products like Nerf guns is one thing, but I think that doing it to scientific equipment is a bigger problem. Are scientists going to stop work if they can t find a pipette sucker of the desired gender? Is worrying about this going to distract them from their research (really bad if working with infectious or carcinogenic solutions). The Integra advertising claims to be doing this to promote breast cancer research which is also bogus. Here is a Sociological Images article about the problems of using pink to market breast cancer research [3] and the Sociological Images post about pinkwashing (boobies against breast cancer) is also worth reading [4]. As an aside I made a mistake in putting a pipette sucker over the woman s chest in that picture. The way that Integra portreyed her chest is relevant to analysis of this advert. But unfortunately I didn t photograph that. Here is a link to my sociological images post from 2014 [5].

11 January 2016

Sven Hoexter: grep wc -l

I did some musings on my way home about a line of shell scripting similar to
if [  grep foobar somefile    wc -l  -gt 0 ]; then ...
Yes it's obvious that silencing grep and working with the return code is way more elegant and the backticks are also deprecated, or at least discouraged, nowadays. For this special case "grep -c" is not the right replacement. Just in case. So I wanted to know how widespread the "grep wc -l" chaining actually is. codesearch.d.n to the rescue! At least in some codebases it seems to be rather widespread, so maybe "grep -c" is not POSIX compliant? Nope. Traveling back a few years and looking at a somewhat older manpage also lists a "-c" option. At least for now I doubt that this is some kind of backwards compatiblity thing. Even busybox supports it. As you can obviously deduce from the matching lines, and my rather fuzzy search pattern, there are valid cases among the result set where "grep" is just the first command and some "awk/sed/tr" (you name it) is in between the final "wc -l". But quite some " wc -l" could be replaced by a "-c" added to the "grep" invocation.

Thadeu Lima de Souza Cascardo: GNU on Smartphones (part II)

Some time ago, I wrote how to get GNU on a smartphone. This is going to be a long discussion on why and how we should work on more operating systems for more devices. On Android So, why should we bother if we already have Android, some might ask? If it's just because of some binary blobs, one could just use Replicant, right? Well, one of the problems is that Android development is done in hiding, and pushed downstream when a new version is launched. There is no community behind that anyone can join. Replicant ends up either following it or staying behind. It could do a fork and have its own innovations. And I am all for it. But the lack of manpower for supporting devices and keeping up with the latest versions and security fixes already takes most of the time for the one or two developers involved. Also, Android has a huge modularity problem, that I will discuss further below. But it's hard to replace many components in the system, unless you replace them all. And that also causes the problem that applications can hardly share extra components. I would rather see Debian running on my devices and supporting good environments and frameworks for all kinds of devices, like phones, tablets, TVs, cars, etc. It's developed by a community I can join, it allows a diverse set of frameworks and environments, and it's much easier to replace single components on such a system. On Copyleft Hardware I get it. Hardware is not free or libre. Its design is. I love the concept of copyleft hardware, where one applies the copyleft principles to a hardware design. Also, there is the concept of Hardware that Respects Your Freedom, that is, one that allows you to use it with only free software. Note that RYF hardware is not necessarily copyleft hardware. In fact, most of the time, the original vendor has not helped at all, and it required reverse engineering efforts by other people to be able to run free software on those systems. My point here is that we should not prevent people from running free software on hardware that does not RYF or that is not copyleft. We should continue the efforts of reverse engineering and of pushing hardware vendors to not only ship free software for their hardware, but also release their design under free licenses. But in the meantime, we need to make free software flourish in the plethora of devices on the hands of so many people around the world. On Diversity I won't go into details on this post about two things. One topic I love is retrocomputing and how Linux supported so many devices, and how many free or quasi-free operating systems ran on so many of them in the past. I could mention ucLinux, Familiar, PDAs, Palmtops, Motorolas, etc. But I will leave it to another time and go from Openmoko and Maemo forward. The other topic is application scalability. Even Debian with so many software available does not ship all free software there is available. And it doesn't support all third-party services out there. How can we solve that? It has to do with platforms, protocols, open protocols, etc. I will not go into that today. Because I believe that either way, it's healthy for our society to have diversity. I believe we should have other operating systems available for our devices. Even if application developers will not develop for all of them. That is already the case today. There are other ways to fix that, when that needs fixing. Sometimes, it's sufficient that you can have your own operating system on your device, that you can customize it, enhance it and share it with friends. And also, that would allow for innovation. It would make possible that some other operating system would have enough market share on some other niche. Other than Android and iOS, for example. But that requires that we can support that operating system on different devices. And that is the scalability that I want to talk about. How to support more devices with less effort. Options But before I go into that, let me write more about the alternatives we have out there. And some of the history around it. Openmoko Openmoko developed a set of devices that had some free design. And it has some free operating systems running on top. The community developed a lot of their own as well. Debian could (still can) run on it. There is SHR, which uses FSO, a mobile middleware based on D-Bus. It even spawned other devices to be developed, like GTA04, a successor board, that can be shipped inside a Neo Freerunner case. Maemo, Moblin, Meego and Tizen I remember the announcement of Nokia N770. During FISL in 2005, I even criticized a lot, because it shipped with proprietary drivers. And applications. But it was the first time we heard of Maemo. It was based on Debian and GNOME. The GNOME Mobile initiative was born from that, I believe, but died later on. But with the launch of N900, and later events, like the merge of Moblin with Maemo, to create Meego, we all had an operating system that was based on community developed components, that had some community participation, and was much more like the systems we were used to. You could run gcc on N900. You could install Das U-Boot and have other operating systems running there. But Nokia has gone a different path. Intel has started Tizen with Samsung. There is so much legacy there, that could still be developed upon. I am just sad that Jolla decided to put proprietary layers on top of that, to create SailfishOS. But we still have Mer, Nemo. But it looks like Cordia is gone. At least, (http://cordiahd.org) seems to have been registered by a domain seller. Not to forget, Neo900, a project to upgrade the board, in the same vein as GTA04. FirefoxOS and Ubuntu What can I say about FirefoxOS and Ubuntu Phone? In summary, I think we need more than Web, and Canonical has a history of not being too community oriented as we'd like. I won't go too much here in what I think about the Web as a platform. But I think we need a system that has more options for platforms. I haven't participated in projects directed by Mozilla either, so I can't say much about that. Ubuntu Phone should be a system more like what we are used to. But Canonical is going to set the directions to the project, it's not a community project. Nonetheless, I think they add to the diversity, and users should be able to try them, or their free parts or versions. But there are challenges there, that I think need to be discussed. So, both of these systems are based on Android. They don't use Dalvik or the application framework. But they use what is below that, which means device drivers in userspaces, like RIL, for the modem drivers, and EGL, for graphics drivers. The reason they do that is to build on top of all the existing vendor support for Android. If a SOC and phone vendor already supports Android, there should be not much needed to do to support FirefoxOS or Ubuntu Phone. In practice, this has not benefited the users or the projects. Porting should be as simple as getting a generic FirefoxOS or Ubuntu Phone image and run it on top of your Android or CyanogenMod port. Porting usually requires doing all the same work as porting Android. Even though one should be able to take advantage of existing ports, it still requires doing a lot of integration work and building an entire image, most of the time, including the upper layers, that should be equal in all devices. This process should require at most creating a new image based on other images and loading it on the device. I will discuss more about this below. I can't forget to mention the Matchstick TV project. It is based on FirefoxOS. I think it would have much more changes to succeed if it was easier for testers to have images available for all of their gadgets capable of running some form of Android. Replicant And then we have Replicant. It has a lot of the problems Android has. Even so, it's a tremendously important project. First, it offers a free version of Android, removing all proprietary pieces. This is very good for the community. But more than that, it tries to free the devices beyond that. What the project has been done is reverse engineer some of the pieces, mostly the modem drivers. That allows other projects to build upon that work, and support those modems. Without that, there is no telephony or celullar data available on any of these devices. Not without proprietary software, that is. They also have been working on free bootloaders, which is another important step for a completely free system. Next steps There are many challenges here, but I believe we should work on a set of steps that make it more palatable and produce intermediary results that can be used by users and other projects. One of the goals should be good modularity. The ability to replace some pieces with the least trouble necessary. The update of a single framework library should be just a package install, instead of building the entire framework again. If there is ABI breakage, users should still be able to have access to binaries (and accompanying source code) and only need to update the library and its reverse dependencies. If one layer does not have these properties, at least it should be possible to update this big chunk without interfering with the other layers. One example is FirefoxOS and Ubuntu Phone. Even if there is a big image with all system userspace and middleware, the porting, install and upgrade process should allow the user to keep the applications and to leverage porting already done by similar projects. Heck, these two projects should be able to share porting efforts without any trouble. So what follows is a quick discussion on Android builds, then suggestions on how to approach some of the challenges. On Android build The big problem with Android build is its non-modularity. You need to build the world and more to get a single image in the end. Instead of packages that could be built independently, that generated modular package images, that could be bundled in a single system image. Better yet would be the ability to pick only those components that matter. Certainly, portability would be just as interesting, being able to build certain components on top a GNU system with GNU libc. At times, it seems like this is done by design, to make it difficult for "fragmentation" and competition. Basically, making it difficult to exercise the freedom to modify the software and share your modifications with others. Imagine the possibilities of being able to: There are some dangers in promoting the use of Android like this. Since it promotes proprietary drivers, relying on such layers instead of better community oriented layers means giving an advantage to the first. So, the best plan would be to replace those layers, when they are used, for things like ofono and Wayland, for example. But, in the meantime, making it easier for users to experiment with FirefoxOS, Ubuntu Phone, Matchstick TV, Replicant on other devices, without resorting to building the entire Android system, would be a very nice thing. It is possible that there are some challenges with respect to API and ABI. That these layers are too intermingled that some changes present in one port would prevent FirefoxOS to run on top of it without changes in either of the layers. I can't confirm that is the case, but can't deny the possibility. Rooting One of the challenges we have that may have trouble in scaling is rooting devices. Unfortunately, most of the devices are owned by the vendor or carrier, not the user. The user is prevented from replacing software components in the system, by removing its permissions from replacing most of the files in the filesystem, or writing to block devices, or change boot parameters or write to the storage devices. Fortunately, there are many documents, guides, howtos, and whatnots out there instructing on how to root a lot of devices. In some cases, it depends on software bugs that can be patched by the users as instructed by vendors. Certainly, favoring devices that are built to allow rooting, hacking, etc, is a good thing. But we should still help those users out there who do not have such devices, and allow them to run free software on them. Booting Then, comes booting, which is a large discussion on its own, and also related to rooting, or how to allow users to replace their software. First, we have the topic of bootloaders, which are usually not free, and embedded in the chip, not on external storage. So, there are those pieces of the bootloader which we can replace more easily and those that we are not, because they would require changing a piece of ROM, for example. Das U-Boot would be one of the preferred options for a system. It supports a lot of hardware platforms out there, a lot of storage devices and filesystems, network booting, USB and serial booting, and a lot of other things. Porting is not an easy task, but it is possible. Meanwhile, using the bootloaders that ship with the system, when possible, would allow a path where other pieces of the system would be free. One of the challenges here is building single images that could boot everywhere. The lack of a single ARM boot environment is a curse and a blessing. It makes it hard to have this single boot image, but, on the other hand, it has allowed so much of the information for such systems to be free, to be embedded in copyleft software, instead of having blobs executed by our free systems, like ACPI encourages. Device trees have pushed this portability issue from the kernel to the bootloaders. Possibily encouraging vendors to now hide and copyright this information in the form of proprietary device trees. But it has made it easier for single images. In practice, we still need to see a lot of devices out there supporting this single kernel scenario. And this mechanism only brings us the possibility of a single kernel. We still need to ship bootable images that have pieces of bootloaders that are not as portable. This has caused lots of operating systems out there to be built for a single board. Or to support just a small set of boards. I struggle with the concept. Why are we not able to mix device-specific pieces with generic pieces and get a resulting image that will boot on our choice of board? Why does every project need to do all the porting work again, repeating the efforts? Or have one entier ISO image for every supported board? Check how Geexbox does it, for an example. Fortunately, I see Debian going in a good direction. Here, one can see how it instructs the user to combine a system-dependent part with a system-independent part. Installation Which brings us to the installation challenge. We should make this easy and also customizable by the user. Every project might have its own method, and that is part of the diversity that we should allow. The great challenge here is handling rooting and booting for the user. But it's also possible to leave that as separate efforts, as it would be nice to have good installers as we have in the desktop and server environments. Linux Linux is one of the most ported kernels out there. Of course, it would be healthy to the diversity I propose that other kernels and systems out there should work on those mobile devices. NetBSD, for example, has a reputation of being very portable and ported to many platforms. And GNU runs on many of them, either together with the original systems, or as the main system on top of other kernels, as proven by the Debian GNU/kFreeBSD port, which uses GNU libc. But, though I would love to see HURD running directly on those devices, Linux and its derivatives are already running on them. Easier to tackle is to get Linux-libre running on those systems. But though this looks like one of the easier tasks at hand, it is not. If you run a derivative version from Linux, provided by the vendor, things should go smooth. But most of the time, the vendor does not provide patches upstream, and leave their fork to rot, if you are lucky, in the earlier 3.x series. And some times, there is not even source code available. There are vendors out there who do not respect the GPL and that is one of the reasons why GPL enforcement is important. I take this opportunity to call attention to the work of Software Freedom Conservancy and its current efforts to raise funds to continue their work. Running an existing binary version of Linux on your device with a free userspace is part of the strategy of replacing pieces one at a time while allowing for good diversity and reaching more users. Drivers Then we have the matter of drivers. And in this case, it's not only Linux drivers, but drivers running in userspace. Though others exist, there are two important and common cases, which are modem and graphics drivers, both of which are usually provided by Android frameworks, and that other systems try to leverage, instead of using alternatives that are more community friendly. In the case of modem drivers, Android uses its RIL. Besides not using a Radio or Modem at all, there are two strategies for free versions. One is using free versions of the drivers for RIL. That's what Replicant does, because, well, it uses the other Android subsystems after all. The other one is using a system that is developed by the community. ofono is one that, even though it's an Intel iniative, looks more community governed or open to community participation than any Android subsystem ever was. As for Graphics, Canonical even built its Mir project with the goal of being able to use Android GPU drivers. Luckily, there has been a lot of reverse engineering efforts out there for a lot of those GPUs shipped with ARM SoCs. Then, we can use Mesa, Wayland and X.org. Other option, until then, is just using a framebuffer driver, possibly one that does not need any initialization, depending on one done by the bootloader, for example. Middleware and Shells Plasma Active, that I just found out now is Plasma Mobile, looks like a great system. Built by folks behind KDE, we can expect great freedom to come from it. Unfortunately, it suffers from what we have been discussing here, which is lack of good device support, or shipping images that run on top of single devices, without leveraging the porting that has come before of other systems. Fortunately, that is just what I want to accomplish with this effort. FSO, that I mentioned before, is a good middleware, that we should try to run on top of these devices. Running GNOME or Unity shell, and use rpm or deb based systems, that's all part of the plan on diversity. You could use systemd, or System V init systems, whatever gives you the kicks. It's not an easy task, since there are so many new things on these new kinds of devices. Besides touch, there is telephony, which as I mentioned, would be a good task for ofono. As for TV sets or dongles, I would love to see OpenFlint, created by the Matchstick TV guys, flourish out there and allow me to flint stuff from my mobile phone running Debian into my TV dongle running Debian. Project So, is there a project out there you can start contributing to? Well, I pointed out a lot of them. All of them make part of this plan. Contributing to reverse engineering GPUs, or to Plasma Mobile, ofono, GNOME, Linux-libre, bootloaders, Debian, and so many other projects. My plans are to contribute in the scope of Debian and make sure it works well on top of semi-liberated devices, and make sure there is a nice user interface and good applications when using either GNOME or Plasma. Integrating ofono is a good next step, but I am running ahead of myself. Right now, I don't think there is need for an integrated effort. If you think otherwise, please let me know. If you are doing something in this direction, I would love to know. Paul Wise reminded me to point out to the Debian Mobile, where I will probably contribute any documentation and other relevant results. Thanks There are some many people to thank, but I would like to remember Ian Murdock, who created Debian, one of the projects who inspires me the most. I think the best way to handle his passing is to celebrate what he has helped create, and move forward, taking more free software to more people in an easy and modular way. I have been wanting to write something like this for a long time, so I thank Chris Webber for inspiring me on doing it.

10 January 2016

Juliana Louback: NLP: Viterbi Named-Entity Tagger

During my MSc program, I was lucky to squeeze into Michael Collin s NLP class. We used his Coursera course as part of the program, which I d highly recommend. Recently I decided to review my NLP studies and I believe the best way to learn or relearn a subject is to teach it. This is one in a series of 4 posts with a walk-through of the algorithms we implemented during the course. I ll provide links to my code hosted on Github. Disclaimer: Before taking this NLP course, the only thing I knew about Python was that it s the one without curly brackets . I learned Python on the go while implementing these algorithms. So if I did anything against Python code conventions or flat-out heinous, I apologize and thank you in advance for your understanding. Feel free to write and let me know.

The Concept To quote Wikipedia, Named-entity recognition (I ve always known it as tagging) is a subtask of information extraction that seeks to locate and classify elements in text into predefined categories such as the names of persons, organizations, locations, expressions of times, quanitites, monetary values, percentages, etc. For example, the algorithm receives as input some text Bill Gates founded Microsoft in 1975. and outputs Bill Gates[person] founded Microsoft[organization] in 1975[date]. Off the top of my head, some useful applications are document matching (ex. a document containing Gates[person] may not be on the same topic as one containing gates[object]) and query searches. I m sure there are lots more, if you check out Collin s Coursera course he may discuss this in greater depth.

The Requirements Development data: The file ner_dev.dat provided by prof. Michael Collins has a series of sentences separated by an empty line, one word per line. Training data: The file ner_train.dat provided by prof. Michael Collins has a series of sentences separated by an empty line, one word and tag per line, speparated by a space. Word-tag count data: The file ner.counts has the format [count] [type of tag] [label] [word]. The tags used are RARE, O, I-MISC, I-PER, I-ORG, I-LOC, B-MISC, B-PER, B-ORG, B-LOC. The tag O means it s not an NE. This file is generated by count_freqs.py, a script provided by prof. Michael Collins. Run count_freqs.py on the training data ner_train.dat

The Algorithm Python code: viterbi.py Usage: python viterbi.py ner.counts ngram.counts [input_file] > [output_file] Summary: The Viterbi algorithm finds the maximum probability path for a series of observations, based on emission and transition probabilities. In a Markov Process, emission is the probability of an output given a state and transition is the probability of transitioning to the state given the previous states. In our case, the emission parameter e(x y) = the probability of the word being x given you attributed tag y. If your training data had 100 counts of person tags, one of which is the word London (I know a guy who named his kid London), e( London person ) = 0.01. Now with 50 counts of location tags, 5 of which are London , e( London location ) = 0.1 which clearly trumps 0.01. The transition parameter q(yi yi-1, yi-2) = the probability of putting tag y in position i given it s two previous tags. This is calculated by Count(trigram)/Count(bigram). For each word in the development data, he Viterbi algorithm will associate a score for a word-tag combo based on the emission and transition parameters it obtained from the training data. It does this for every possible tag and sees which is more likely. Clearly this won t be 100% correct as natural language is unpredictable, but you should get pretty high accuracy. Optional Preprocessing Re-label words in training data with frequency < 5 as RARE - This isn t required, but useful. Re-run count_freqs.py if used. Python code: label_rare.py Usage: python label_rare.py [input_file] Pseudocode:
  1. Uses Python Counter to obtain word counts in [input_file]; removes all word-count pairs with count < 5, store remaining pairs in a dictionary named rare_words.
  2. Iterates through each line in [input file], checks if word is in rare words dictionary, if so, replaces word with RARE.
Step 1. Get Count(y) and Count(x~y) Python code: emission_counts.py Pseudocode:
  1. Iterate through each line in ner.counts file and store each word-label-count combo in a dictionary count_xy and update the dictionary of count_y. For example count_xy[Peter][I-PER] returns the number of times the word Peter was labeled I-PER in the training data and count_y[I-PER] the total number of I-PER tags. The dictionary count_y contains 8 items, one for each label ( RARE , O, I-MISC, I-PER, I-ORG, I-LOC, B-MISC, B-PER, B-ORG, B-LOC);
  2. Return count_xy, count_y
Step 2. Get bigram and trigram counts Python code: transition_counts.py Pseudocode:
  1. Iterate through each line in the n-gram_counts file
  2. If the line contains 2-GRAM add an item to the bigram_counts dictionary using the bigram (two space-separated labels following the tag type 2-gram ) as key, count as value. This dictionary will contain Count(yi-2,yi-1).
  3. If the line contains 3-GRAM , add an item to the trigram_counts dictionary using the trigram as key, count as value. This dictionary will contain Count(yi-2, yi-1, yi).
  4. Return dictionaries of bigram and trigram counts.
Step 3. Viterbi (For each line in the [input_file]):
  1. If the word was seen in training data (present in the count_xy dictionary), for each of the possible labels for the word:
  2. Calculate emission = count_xy[word][label] / float(count_y[label]
  3. Calculate transition = trigram_counts[trigram])/float(bigram_counts[bigram] Note: yi-2 = *, yi-1 = * for the first round
  4. Set probability = emission x transition
  5. Update max(probability) and arg max if needed. 2 If the word was not seen in the training data:
  6. Calculate emission = count xy[RARE][label] / float(count y[label].
  7. Calculate q(yi yi-1, yi-2) = trigram counts[trigram])/float(bigram counts[bigram]. Note: yi-2 = , yi-1 = for the first round
  8. Set probability = emission transition
  9. Update max(probability) if needed, arg max = RARE
  10. Write arg max and log(max(probability)) to output file.
  11. Update yi-2, yi-1.
  12. Update yi-2, yi-1.
Evaluation Prof. Michael Collins provided an evaluation script eval_ne_tagger.py to verify the output of your Viterbi implementation. Usage: python eval_ne_tagger.py ner_dev.key [output_file]

9 January 2016

Daniel Pocock: Comments about people with mental illness

A quote:
As the Buddha said 2500 years ago... we're all out of our fucking minds. (Albert Ellis)
There have been a few occasions over the last year where people suffering mental illnesses have been the subject of much discussion. In March 2015 there was the tragic loss of Germanwings flight 9525. It was discovered that the co-pilot, Andreas Lubitz, had been receiving treatment for mental illness. Under strict privacy laws, nobody at his employer, the airline, had received any information about the diagnosis or treatment. During the summer, the private mailing list for a large online community discussed the mental illness of a contributor to a project. Various people expressed opinions that appeared to be generalizations about all those with mental illness. Some people hinted the illness was a lie to avoid work while others speculated about options for treatment. Nobody involved mentioned having any medical expertise. It is ironic that on the one hand, we have the dramatic example of an aircraft crashing at the hands of somebody who is declared unfit to work but working anyway and on the other hand when somebody else couldn't do something, the diagnosis is being disputed by people who find it inconvenient or don't understand it. More recently, there has been openly public discussion about whether another developer may have had mental illness. Once again, there doesn't appear to be any evidence from people with any medical expertise or documentation whatsoever. Some of the comments appear to be in the context of a grudge or justifying some other opinion. What's worse, some comments appear to suggest that mental illness can be blamed for anything else that goes wrong in somebody's life. If somebody is shot and bleeds to death, do you say low blood pressure killed him or do you just say he was shot? Likewise, if somebody is subject to some kind of bullying and abused, does this have no interaction with mental illness? In fact, Google reveals an enormous number of papers from experts in this field suggesting that mental illness can arise or be exacerbated by bad experiences. Although it may not have been clear at that point in time, when we look back at Alan Turing's death today, suicide was not a valid verdict and persecution was a factor. Statistics tell us that 1 in 4 people experience a mental health problem in the UK each year. In the USA it is 26% of the adult population, each year. These may be long term conditions or they may be short term conditions. They may arise spontaneously or they may be arising from some kind of trauma, abuse or harassment in the home, workplace or some other context. For large online communities, these statistics imply it is inevitable that some participants will be suffering from mental illness and others will have spouses, parents or children suffering from such conditions. These people will be acutely aware of the comments being made publicly about other people in the community. Social interaction also relates to the experience of mental illness, people who are supported by their community and society are more likely to recover while those who feel they are not understood or discriminated against may feel more isolated, compounding their condition. As a developer, I wouldn't really like the idea of doctors meddling with my code, so why is it that some people in the IT and business community are so happy to meddle around in the domain of doctors, giving such strong opinions about something they have no expertise in? Despite the tragic loss of life in Germanwings 9525, observing some of these other discussions that have taken place reminds me why Germany and some other countries do have such strict privacy laws for people who seek medical treatment. (You can Follow or Tweet about this blog on Twitter)

Iain R. Learmonth: Trust

This is not a new world, this is simply an extension of the old one. I'm not going to write here about sweeping changes that are happening now, but changes that have been taking place in plain sight for many decades. No one has flipped a switch, only tweaked and tuned variables here and there to lead us down this path. I'd like to reflect on where we are now but there is no way I could describe how it is we got here, the journey was far too complex and filled with ommissions, half-truths and outright lies. It's likely we will never know what has brought us here. I live in Scotland, a country that is a part of the United Kingdom and a member of the European Union. We have a Scottish Government, although certain matters are still handled by the UK Government. The European Government also handles some matters and these can take effect across the entire European Union. I do not feel that I can hold trust in any of these bodies anymore. The European Convention on Human Rights was, for me at least, a beacon of hope. A series of fundamental rights guaranteed to be upheld for every person within the European Union. A series of fundamental rights that has been ignored by governments repeatedly: This is not an exhaustive list, just select cross-sections of our recent history. It is important to remember that in each of these cases, it took a citizen to take the case to the European Court of Human Rights. These rights were violated by the UK government until the actions were challenged, the legislation that allowed them was currently enacted into UK law without regard for the ECHR. It should also be noted that the ban on prisoners voting is still in effect in the UK. We've learnt that the ECHR is not an effective safeguard against the abuse of powers by government. The UK government also sees the Human Rights Act as a problem, although at least scrapping it has been delayed for now. Much of these breaches of human rights are justified by the government as in the interest of the runaway train known as "national security". I have recently had direct contact with one aspect of this during my journey home from 32c3. You can read about my experiences with airport security here and here. My experiences at these airports angered me for a number of reasons. The first of which was that I was asked to expose my genitals as part of the routine screening, which I do not believe to be proportionate at all. At Luton, I was at the point where I was intending to leave the airport and take the train instead before I was allowed to excercise my right to opt-out of the nude body scanner. Since these incidents, I have conducted some research into these scanners and started an article on the Open Rights Group wiki. While the security officer at Luton had tried to tell me that the radio waves used could not penetrate clothing, they in fact can and this is the entire purpose of them. While the security officer at Luton told me that the machines did not generate an image, they are in fact doing exactly that, even if that image is processed by computer vision algorithms as opposed to being viewed by a human reviewer. A leaflet by the Department for Transport, made available on the Aberdeen Airport website, also states that no image is created, and yet this is exactly how the scanners work. I have never seen this leaflet printed and available in the airport itself, although I admit I do not fly regularly and may have missed it. That said, it does not provide a true representation of the scan process and I would go as far to say it contains an outright lie. In a document published by the UK Government titled "Response to the consultation on the use of security scanners in an aviation security environment", they state:
"nearly all passengers, if they fully understand the procedures, would be unlikely to opt for [the alternative of a private search]"
Even with this display of confidence that they believe the public are happy with the invasion of privacy brought by the security scanners, they have still chosen to not fully inform the public in the way in which the scanner operates. It is the lies that anger me the most. We claim to live in a democracy and you cannot have a democracy without transparency. It is not too late for the Government to earn back my trust, but for now, they haven't given me good reason to believe anything they produce. If you have read this article and you would like to support efforts for change in the United Kingdom, please consider joining the Open Rights Group and perhaps getting involved in their work.

8 January 2016

Norbert Preining: WordPress 4.4 and older themes how to break backward compatibility

Since quite some time I was wondering why my blog suddenly does not display a title in the browser bar. Hmm, Of course I thought I broke something, but it turned out that this is a feature of a recent WordPress update. Mentioned in a blog entry on the development or should I say, hidden there so that nobody knows about it the changes stirred quite some reactions, not the least because a lot, if not all older themes, are suddenly broken. Congratulations WordPress developer to this great move. wordpress-breaks-themes So what has happened? Many themes use the wp_title function to ship out title tags. After a short period of deprecation WordPress developers instantiated the function, but in a way that it doesn t work with older themes. Perfect. To quote from the kind of annoucement:
This latest change makes the new API (almost) feature complete and theme authors are discouraged from using wp_title() in the future. If it was decided to add a UI to let users choose the make up of their document title, or another improvement to how title generation works, we now have a forward compatible way to handle these things. To upgrade themes from using wp_title() to declaring theme support for core s title-tag without breaking backwards compatibility with WordPress 4.0 and older, theme authors can check if the callback function exists and add a shiv in case it does not:
Well, thanks for putting this well hidden in a development blog. Furthermore, one needs to read the following code quite carefully, otherwise one overlooks that it is necessary to delete the calls to wp_title. Fortunately, on blog of the Theme Review Team the this post was found, which explains what has to be done: Indeed, that worked. Since I am already a child theme the changes were minimal, once one found them. Coming from a TeX world, things like backward compatibility in other products always strike me as funny

Alessio Treglia: OpenStack: a .deb guy on (the) board

The elections for the new OpenStack board are coming closer
and this time the Open Source community has a great
opportunity of representation: Giuseppe Patern is standing as a candidate for the board.

Although Giuseppe is considered by HP and Forrester Research
among the top talented consultants in the world,
Gippa (as he s largely known in the industry) is still one of us ,
a nerd that grew up with a keyboard on his hands.
As he s one of the candidates of the OpenStack board,
Fabio Marzocca wishing to know more has interviewed him.

[FM] The hard question. You re a techie. Why the hell are you running for the board?

[GP] This is indeed a good question It all started as a challenge from some clients and friends that are working in the OpenStack project. The truth is that the board and most of the management of the foundation are from vendors. I m not questioning here if they do a good job or not, it is very likely that they tend to protect their own interests. In my opinion it lacks some community spirit that have fostered Linux development such as Debian and Ubuntu. That s why I m running for it, to bring the community where it should be.

[FM] Back to Debian and Ubuntu, could you tell us your story with Linux?

[GP] I discovered Linux in 1994, but only in 1996 things were serious. By the time I just finished high school and I applied for a job in a local Internet Service Provider. At 15 years I was well known in the local community as I was installing and maintaining several BBSes, so it wasn t hard to get the job. I can say it was love at first sight. I started with Slackware (was the first distro), but I moved into redhat first and then debian. When I was working for the IBM Linux Technology Center, I was in charge of helping porting Linux to PowerPC and backporting LVM to make it similar to AIX. Sun was also a good playground as they acquired Cobalt, a hardware appliance based on debian. Then I shifted more towards Enterprise Linux adoption with 6 years in RedHat and then I went to Canonical. I was happy to go back to Debian and Ubuntu community, because I still believe that Ubuntu Developer Summits (UDS) were the real spirit of a Linux community.

[FM] Another hard question. We know you re somehow involved in the rebellion of Devuan.org. What is your opinion about systemd?

[GP] Let me tell you that it s not totally black/white and let s see the two sides here. Something like systemd was indeed needed. Each distro has its own way of init ing the system and for a package maintainer or commercial software maker, maintaining different init behaviour is insane. And as an init replacement it totally makes sense. However, IMHO systemd went too far away, incorporating into its code something that should not happen. A DHCP client into an init system, seriously? I doubt it was in the spirit of the Unix and Linux system
However, in the real world of pets vs cattle , where application matters more than systems, having a systemd as it is, doesn t change that much.

[FM] OpenStack was incubated in Ubuntu and the roots are quite clear. Is there something else that you would like to see from Debian and Ubuntu in OpenStack?

[GP] Stability, if I can name just one. Currently OpenStack is released every 6 months, which was probably the best choice to speed up the development. However, this is now becoming a weakness, as enterprise customers can t upgrade their critical infrastructures every 6 months. Traditionally Debian is maniacally focused on given a bullet-proof distribution, this is something that in my opinion is missing from OpenStack.

[FM] Gippa, tell us just 2 or 3 topics you will bring to action in case of election

[GP] I d like to introduce an OpenStack LTS process, following the Ubuntu approach: while releasing every 6 months is fair enough for development and testing environments, having a stable release every 2-3 years can give enterprise customers the peace of mind they need while running production environments.
I d also love to see a consolidation of the core (Nova/Neutron/Cinder/Swift): vendors and developers are introducing new features and projects while I d love to see for example- a more stable and scalable Neutron and a more stable connection to Oslo (in particular rabbitmq).
In general, I would encourage more attention to who is actually deploying, integrating and using OpenStack every day. I would also try to foster the ecosystem of ISVs in order to release and certify their software for OpenStack. And last but not least- to see interoperation between regional datacenters: I dream of a world where companies in a given territory can work together , and this is only possible through standards. I hope that OpenStack can represent this standard.

[FM] When are the elections and how can we vote?

[GP] Individual Member Director elections for the 2016 Board will be held online from Monday January 11, 2016 to Friday January 15, 2016. More informations on the website.

Dirk Eddelbuettel: AsioHeaders 1.11.0-1

Making it easier to use C++ in R has been a really nice and rewarding side effect of the work on Rcpp. One really good idea came from something Jay Emerson, Michael Kane and had I kicked about for way too long: shipping Boost headers for easier use by R and CRAN packages (such as their family of packages around bigmemory). The key idea here is headers: Experienced C++ authors such as library writers can organise C++ code in such a way that one can (almost always) get by without any linking. Which makes deployment so much easier in most use cases, and surely also with R which knows how to set an include path. So after years of "yes we really should", Jay deserves the credit for actually sitting down almost three years ago and creating the first version. So at the end of January 2013, we released BH version 1.51.0-0. By now the package is used fifty-four other CRAN packages --- clearly a much stronger uptake then we ever expected. I took over maintenance at some point, and we are currently in-line with the most recent Boost release 1.60.0. But some people were always lusting after (some) parts of Boost which also require linking. For some libraries (such as Boost.Date_Time in my RcppBDT package) you can set a #define to not require linking (and forego some string formatting or parsing we get from R anyway). Some others are trickier; Boost Regex is one example. I do not think you can use it without linking (but then C++11 helps and finally brings regular expression in the default library). Another library which the systems / network programmers at work would frequently rely upon is Boost.Asio, a cross-platform C++ library for network and low-level I/O programming. It was already used on CRAN by the iptools package by Bob Rudis and Oliver Keyes which shied away from building on Windoze (while 'doze and Boost do get along, but the CRAN system makes it a little more involved). A couple of days ago, I somehow learned that the Asio library actually comes in two flavours: the well-known Boost.Asio (requiring linking), and also as a header-only standalone library! Well, well, well -- so I ran that by Bob and Oliver asking if that would be useful. And the response was a resounding and pretty much immediate Hell, Yes!. So I wrapped it in a package, told Bob about it, who tested it and gave the thumbs up. And after a slightly longer-than-usual on-boarding, the package is now on CRAN. As network (and systems) programming is not entirely uncommon even at CRAN, I hope that this package may find a few more use cases. A new version of iptools should be forthcoming "shortly", including for the first time a Windows build thanks to this package. The indefatigable Martin Morgan already spotted our GitHub repo and scored the first fork. Comments and suggestions about AsioHeaders are welcome via the issue tracker at the GitHub GitHub repo.

This post by Dirk Eddelbuettel originated on his Thinking inside the box blog. Please report excessive re-aggregation in third-party for-profit settings.

7 January 2016

Elena 'valhalla' Grandi: Smartphones, ownership and hope for the fate of humanity

Smartphones, ownership and hope for the fate of humanity
Do you own your phone or does it own you? DanielPocock.com


I have conflicting opinions about this article.

Usually I carry a dumb phone, so I'm not completely disconnected, but I'm mostly self-limited to "useful" communications by the fact that I have to pay for calls and SMSs. It also has a few useful features like showing the time , an alarm clock and a led torch, but that's it.

I also carry a smartphone, but I've never been able to trust it with my personal data, so there is no email on it and no communication software. It's also always offline to preserve battery, unless I'm actually using it for something (usually maps). It does have an offline wikipedia reader, which is the second thing I use it more often for. About half of the time I try to use it, however, it is off because I forgot to charge it, unless I've planned in advance to use it (which usually means I'm also carrying a laptop and will need to tether it).

So I guess that I should be agreeing with the article that offline life is better, and that we shouldn't depend on phones in our daily life, and mostly I do.

On the other hand, I'm not so sure that all of the people who seem to be interacting with a phone are actually disconnected from the local reality.

More than once I've experienced the use of smartphones as part of a local interaction: one typical case involves people having a conversation IRL and checking some fact on the internet and then sharing the results with the rest of the local group.

Actually, most of the time I've seen a smartphone being used at our table while eating with friends or collegues it was being passed around to show something to the people at the table, or at the very least being read aloud from, so it was part of the local experience, not a way to disconnect from it.

I'm sure that there are cases of abuse, but I still have hope that most of the connected humanity is managing to find a good balance between online and offline.

I don't want to go back carrying a wrist watch. I remember them as something unconfortable that ended up hitting stuff as I moved my hands, and I'd rather have my wrists free while I type, thanks. Pocket watches, OTOH...

the main exception involved one young adult in the middle of significantly older relatives, which is a somewhat different issue, and one that I believe predated smartphones (IIRC in my case similar situations involved trying to be somewhere else by reading a book).

Daniel Pocock: Do you own your phone or does it own you?

Have you started thinking about new year's resolutions for 2016? Back to the gym or giving up sugary drinks? Many new year's resolutions have a health theme. Unless you have a heroin addiction, there may not be anything else in your life that is more addictive and has potentially more impact on your health and quality of life than your mobile phone. Almost every week there is some new report about the negative impact of phone use on rest or leisure time. Children are particularly at risk and evidence strongly suggests their grades at school are tanking as a consequence. Can you imagine your life changing for the better if you switched off your mobile phone or left it at home for one day per week in 2016? If you have children, can you think of anything more powerful than the example you set yourself to help them stay in control of their phones? Children have a remarkable ability to emulate the bad habits they observe in their parents. Are you in control? Turning it off is a powerful act of showing who is in charge. If you feel you can't live without it, then you are putting your life in the hands of the people who expect an immediate answer of their calls, your phone company and the Silicon Valley executives who make all those apps you can't stop using. As security expert Jacob Appelbaum puts it, cell phones are tracking devices that also happen to make phone calls. Isn't that a chilling thought to reflect on the next time you give one as Christmas gift? For your health, your children and your bank balance Not so long ago we were having lunch in a pizza restaurant in Luzern, a picturesque lakeside town at the base of the Swiss Alps. Luzern is a popular first stop for tourists from all around the world. A Korean family came along and sat at the table next to us. After ordering their food, they all immediately took out their mobile devices and sat there in complete silence, the mother and father, a girl of eight and a boy of five, oblivious to the world around them and even each other, tapping and swiping for the next ten minutes until their food arrived. We wanted to say hello to them, I joked that I should beep first, initiating communication with the sound of a text message notification. Is this how all holidays will be in future? Is it how all families will spend time together? Can you imagine your grandchildren and their children sharing a meal like this in the year 2050 or beyond? Which gadgets does Bond bring to Switzerland? On Her Majesty's Secret Service is one of the more memorable Bond movies for its spectacular setting in the Swiss Alps, the location now transformed into a mountain-top revolving restaurant visited by thousands of tourists every day with a comfortable cable car service and hiking trails with breathtaking views that never become boring. Can you imagine Bond leaving behind his gun and his skis and visiting Switzerland with a smartphone instead? Eating a pizza with one hand while using the fingertips of the other to operate an app for making drone strikes on villains, swiping through Tinder for a new girl to replace the one who died (from boredom) in his previous "adventure" and letting his gelati melt while engrossed in a downhill ski or motorcycle game in all the glory of a 5.7" 24-bit colour display? Of course its absurd. Would you want to live like that yourself? We see more and more of it in people who are supposedly in Switzerland on the trip of a lifetime. Would you tolerate it in a movie? The mobile phone industry has paid big money to have their technology appear on the silver screen but audience feedback shows people are frustrated with movies that plaster the contents of text messages across the screen every few minutes; hopefully Bond movies will continue to plaster bullets and blood across the screen instead. Time for freedom How would you live for a day or a weekend or an entire holiday without your mobile phone? There are many small frustrations you may experience but the biggest one and the indirect cause of many other problems you will experience may be the inability to tell the time. Many people today have stopped wearing a watch, relying instead upon their mobile phone to tell the time. Without either a phone or a watch, frustration is not far away. If you feel apprehension just at the thought of leaving your phone at home, the lack of a watch may be a subconcious factor behind your hesitation. Trying is better than reading Many articles and blogs give opinions about how to buy a watch, how much to spend and what you can wear it with. Don't spend a lot of time reading any of it, if you don't know where to start, simply go down to the local high street or mall and try them. Start with the most glamorous and expensive models from Swiss manufacturers, as these are what everything else is compared to and then perhaps proceed to look more widely. While Swiss brands tend to sell through the stores, vendors on Amazon and eBay now distribute a range of watches from manufacturers in Japan, China and other locations, such as Orient and Invicta, at a fraction of the price of those in the stores. You still need to try a few first to identify your preferred style and case size though. Google can also turn up many options for different budgets.

Copying or competition? Similarity of Invicta (from Amazon) and Rolex Submariner You may not know whether you want a watch that is manually wound, automatically wound or battery operated. Buying a low-cost automatic model online could be a good way to familiarize yourself before buying anything serious. Mechanical watches have a smoother and more elegant second-hand movement and will survive the next Carrington event but may come to grief around magnets - a brief encounter with a low-cost de-gausser fixes that. Is it smart to buy a smart watch? If you genuinely want to have the feeling of complete freedom and control over technology, you may want to think twice about buying a smart watch. While it may be interesting to own and experiment with it some of the time, being free from your phone means being free from other electronic technology too. If you do go for a smart watch (and there are many valid reasons for trying one some of the time), maybe make it a second (or third) watch. Smart watches are likely to be controversial for some time to come due to their impact in schools (where mobile phones are usually banned) and various privacy factors. Help those around you achieve phone freedom in 2016 There will be further blogs on this theme during 2016, each looking at the pressures people face when with or without the mobile phone. As a developer of communications technology myself, you may be surprised to see me encouraging people not to use it every waking minute. Working on this technology makes me more conscious of its impact on those around me and society in general. A powerful factor to consider when talking about any communications technology is the presence of peer pressure and the behavior of those around you. Going phone-free may involve helping them to consider taking control too. Helping them out with a new watch as a gift (be careful to seek advice on the style that they are likely to prefer or ensure the purchase can be exchanged) may be an interesting way to help them engage with the idea and every time they look at the time, they may also be reminded of your concern for their freedom.

Thorsten Glaser: git find published; test, review, fix it please

I just published the first version of git find on gh/mirabilos/git-find for easy collaboration. The repository deliberately only contains the script and the manual page so it can easily be merged into git.git with complete history later, should they accept it. git find is MirOS licenced. It does require a recent mksh (Update: I did start it in POSIX sh first, but it eventually turned out to require arrays, and I don t know perl(1) and am not going to rewrite it in C) and some common utility extensions to deal with NUL-separated lines (sort -z, grep -z, git ls-tree -z); also, support for '\0' in tr(1) and a comm(1) that does not choke on embedded NULs in lines.

To install or uninstall it, run

	$ git clone git@github.com:mirabilos/git-find.git
	$ cd git-find
	$ sudo ln -sf $PWD/git-find /usr/lib/git-core/
	$ sudo cp git-find.1 /usr/local/share/man/man1/
	  hack  
	$ sudo rm /usr/lib/git-core/git-find \
	    /usr/local/share/man/man1/git-find.1

then you can call it as git find and look at the documentation with git help find , as is customary. The idea behind this utility is to have a tool like git grep that acts on the list of files known to git (and not e.g. ignored files) to quickly search for, say, all PNG files in the repository (but not the generated ones). git find acts on the index for the HEAD, i.e. whatever commit is currently checked-out (unlike git grep which also knows about git add ed files; fix welcome) and then offers a filter syntax similar to find(1) to follow up: parenthes s, ! for negation, -a and -o for boolean are supported, as well as -name, -regex and -wholename and their case-insensitive variants, although regex uses grep(1) without (or, if the global option -E is given, with) -E, and the pattern matches use mksh(1) s, which ignores the locale and doesn t do [[:alpha:]] character classes yet. On the plus side, the output is guaranteed to be sorted; on the minus side, it is rather wastefully using temporary files (under $TMPDIR of course, so use of tmpfs is recommended). -print0 is the only output option (-print being the default). Another mode forwards the file list to the system find; since it doesn t support DOS-style response files, this only works if the amount of files is smaller than the operating system s limit; this mode supports the full range (except -maxdepth) of the system find(1) filters, e.g. -mmin -1 and -ls, but it occurs filesystem access penalty for the entire tree and doesn t sort the output, but can do -ls or even -exec. The idea here is that it can collaboratively be improved, reviewed, fixed, etc. and then, should they agree, with the entire history, subtree-merged into git.git and shipped to the world. Part of the development was sponsored by tarent solutions GmbH, the rest and the entire manual page were done in my vacation.

6 January 2016

Steinar H. Gunderson: IPv6 non-alternatives: DJB's article, 13 years later

With the world passing 10% IPv6 penetration over the weekend, we see the same old debates coming up again; people claiming IPv6 will never happen (despite several years now of exponential growth!), and that if they had only designed it differently, it would have been all over by now. In particular, people like to point to a 2002 3 article by D. J. Bernstein, complete with rants about how Google would never set up useless IPv6 addresses (and then they did that in 2007 I was involved). It's difficult to understand exactly what the article proposes since it's heavy on calling people idiots and light on actual implementation details (as opposed to when DJB's gotten involved in other fields; e.g. thanks to him we now have elliptical curve crypto that doesn't suck, even if the reference implementation was sort of a pain to build), but I will try to go through it nevertheless and show how I cannot find any way it would work well in practice. One thing first, though: Sorry, guys, the ship has sailed. Whatever genius solution DJB may have thought up that I'm missing, and whatever IPv6's shortcomings (they're certainly there), IPv6 is what we have. By now, you can not expect anything else to arise and take over the momentum; we will either live with IPv6 or die with IPv4. So, let's see what DJB says. As far as I can see, his primary call is for a version of IPv6 where the address space is an extension of the IPv4 space. For sake of discussion, let's call that IPv4+ , although it would share a number of properties with IPv6. In particular, his proposal requires changing the OS and other software on every single end host out there, just as IPv6; he readily admits that and outlines how it's done in rough terms (change all structs, change all configuration files, change all databases, change all OS APIs, etc.). From what I can see, he also readily admits that IPv4 and IPv4+ hosts cannot talk to each other, or more clearly, we cannot start using the extended address space before almost everybody has IPv4+ capable software. (E.g., quote: Once these software upgrades have been done on practically every Internet computer, we'll have reached the magic moment: people can start relying on public IPv6 addresses as replacements for public IPv4 addresses. ) So, exactly how does the IPv4 address space fit into the IPv4+ address space? The article doesn't really say anything about this, but I can imagine only two strategies: Build the IPv4+ space around the IPv4 space (ie., the IPv4 space occupies a little corner of the IPv4+ space, similar to how v4-mapped addresses are used within software but not on the wire today, to let applications do unified treatment of IPv4 addresses as a sort of special IPv6 address), or build it as a hierarchical extension. Let's look at the former first; one IPv4 address gives you one IPv4+ addresses. Somehow this seems to give you all the disadvantages of IPv4 and all the disadvantages of IPv6. The ISP is not supposed to give you any more IPv4+ addresses (or at least DJB doesn't want to contact his ISP about more also saying that the fact that automatic address distribution does not change his argument), so if you have one, you're stuck with one. So you still need NAT. (DJB talks about proxies , but I guess that the way things evolved, this either actually means NAT, or it talks about the practice of application-level proxies such as Squid or SOCKS proxies to reach the Internet, which really isn't commonplace anymore, so I'll assume for the sake of discussion it means NAT.) However, we already do NAT. The IPv4 crunch happened despite ubiquitous NAT everywhere; we're actually pretty empty. So we will need to hand out IPv4+ addresses at the very least to new deployments, and also probably reconfigure every site that wants to expand and is out of IPv4 addresses. ( Site here could mean any organizational unit, such as if your neighborhood gets too many new subscribers for your ISP's local addressing scheme to have enough addresses for you.) A much more difficult problem is that we now need to route these addresses on the wire. Ironically, the least clear part of DJB's plan is step 1, saying we will extend the format of IP packets to allow 16-byte addresses ; how exactly will this happen? For this scheme, I can only assume some sort of IPv4 option that says the stuff in the dstaddr field is just the start and doesn't make sense as an IPv4 address on its own; here are the remaining 12 bytes to complete the IPv4+ address . But now your routers need to understand that format, so you cannot do with only upgrading the end hosts; you also need to upgrade every single router out there, not just the end hosts. (Note that many of these do routing in hardware, so you can't just upgrade the software and call it a day.) And until that's done, you're exactly in the same situation as with IPv4/IPv6 today; it's incompatible. I do believe this option is what DJB talks about. However, I fail to see exactly how it is much better than the IPv6 we got ourselves into; you still need to upgrade all software on the planet and all routers on the planet. The benefit is supposedly that a company or user that doesn't care can just keep doing nothing, but they do need to care, since they need to upgrade 100% of their stuff to understand IPv4+ before we can start even deploying it alongside IPv4 (in contrast with IPv6, where we now have lots of experience in running production networks). The single benefit is that they won't have to renumber until they need to grow, at which point they need to anyway. However, let me also discuss the other possible interpretation, namely that of the IPv4+ address space being an extension of IPv4, ie. if you have 1.2.3.4 in IPv4, you have 1.2.3.4.x.x.x.x or similar in IPv4+. (DJB's article mentions 128-bit addresses and not 64-bit, though; we'll get to that in a moment.) People keep bringing this up, too; it's occasionally been called BangIP (probably jokingly, as in this April Fool's joke) due to the similarity with how explicit mail routing would work before SMTP became commonplace. I'll use that name, even though others have been proposed. The main advantage of BangIP is that you can keep your Internet core routing infrastructure. One way or the other, they will keep seeing IPv4 addresses and IPv4 packets; you need no new peering arrangements etc.. The exact details are unclear, though; I've seen people suggest GRE tunneling, ignoring problems they have through NAT, and I've seen suggestions of IPv4 options for source/destination addresses, also ignoring that someting as innocious as setting the ECN bits has been known to break middleboxes left and right. But let's assume you can pull that off, because your middlebox will almost certainly need to be the point that decapsulates BangIP anyway and converts it to IPv4 on the inside, presumably with a 10.0.0.0/8 address space so that your internal routing can keep using IPv4 without an IPv4+ forklift upgrade. (Note that you now lose the supposed security benefit of NAT, by the way, although you could probably encrypt the address.) Of course, your hosts will need to support IPv4+ still, and you will need some way of communicating that you are on the inside of the BangIP boundary. And you will need to know what the inside is, so that when you communicate on this side, you'll send IPv4 and not IPv4+. (For a home network with no routing, you could probably even just do IPv4+ on the inside, although I can imagine complications.) But like I wrote above, experience has shown us that 32 extra bits isn't enough. One layer of NAT isn't doing it, we need two. You could imagine the inter-block routability of BangIP helping a fair bit here (e.g., a company with too many machines for 10.0.0.0/8 could probably easily get more addresses for more external IPv4 addresses, yielding 10.0.0.0/8 blocks), but ultimately, it is a problem that you chop the Internet off in two distinct halves that work very differently. My ISP will probably want to use BangIP for itself, meaning I'm on the outside of the core; how many of those extra bits will they allocate for me? Any at all? Having multiple levels of bang sounds like pain; effectively we're creating a variable-length address. Does anyone ever want that? From experience, when we're creating protocols with variable-length addresses, people just tend to use the maximum level anyway, so why not design it with 128-bit to begin with? (The original IP protocol proposals actually had variable-length addresses, by the way.) So we can create our 32/96 BangIP , where the first 32 bits are for the existing public Internet, and then every IPv4 address gives you a 2^96 addresses to play with. (In a sense, it reminds me of 6to4, which never worked very well and is now thankfully dead.) However, this makes the inside/outside-core problem even worse. I now need two very different wire protocols coexisting on the Internet; IPv4+ (which looks like regular IPv4 to the core) for the core, and a sort of IPv4+-for-the-outside (similar to IPv6) outside it. If I build a company network, I need to make sure all of my routers are IPv4+-for-the-outside and talk that, while if I build the Internet core, I need to make sure all of my connections are IPv4 since I have no guarantee that I will be routable on the Internet otherwise. Furthermore, I have a fixed prefix that I cannot really get out of, defined by my IPv4 address(es). This is called hierarchical routing , and the IPv6 world gave it up relatively early despite it sounding like a great idea at first, because it makes multihoming a complete pain: If I have an address 1.2.3.4 from ISP A and 5.6.7.8 from ISP B, which one do I use as the first 32 bits of my IPv4+ network if I want it routable on the public Internet? You could argue that the solution for me is to get an IPv4 PI netblock (supposedly a /24, since we're not changing the Internet core), but we're already out of those, which is why we started this thing to begin with. Furthermore, if the IPv4/IPv4+ boundary is above my immediate connection to the Internet (say, ISP A doesn't have an IPv4 address, just IPv4+), I'm pretty hosed; I cannot announce an IPv4 netblock in BGP. The fact that the Internet runs on largely the same protocol everywhere is a very nice thing; in contrast, what is described here really would be a mess! So, well. I honestly don't think it's as easy to just do extension instead of alternative when it comes to the address spaces. We'll just need to deal with the pain and realize that upgrading the equipment and software is the larger part of the job anyway, and we'll need to do that no matter what solution we go with. Congrats on reaching 10%! Now get to work with the remaining 90%.

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