[presentations] 01/02: copied from 2016-10-13-OpenWrt-Summit
Holger Levsen
holger at layer-acht.org
Wed Jan 25 17:29:07 UTC 2017
This is an automated email from the git hooks/post-receive script.
holger pushed a commit to branch master
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commit 20cf8acf7e5204e457a45d02227d3dbea0f159b6
Author: Holger Levsen <holger at layer-acht.org>
Date: Wed Jan 25 17:51:36 2017 +0100
copied from 2016-10-13-OpenWrt-Summit
---
2017-01-27-devconf.cz/2017-01-27-devconf.cz.tex | 986 +++++++++++++++++++++
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diff --git a/2017-01-27-devconf.cz/2017-01-27-devconf.cz.tex b/2017-01-27-devconf.cz/2017-01-27-devconf.cz.tex
new file mode 100644
index 0000000..2cfa2b1
--- /dev/null
+++ b/2017-01-27-devconf.cz/2017-01-27-devconf.cz.tex
@@ -0,0 +1,986 @@
+\documentclass[14pt,aspectratio=169]{beamer}
+\setbeamertemplate{caption}[numbered]
+\setbeamertemplate{caption label separator}{:}
+\setbeamercolor{caption name}{fg=normal text.fg}
+\usepackage{amssymb,amsmath}
+\usepackage{ifxetex,ifluatex}
+\usepackage{fixltx2e} % provides \textsubscript
+\usepackage{lmodern}
+\ifxetex
+ \usepackage{fontspec,xltxtra,xunicode}
+ \defaultfontfeatures{Mapping=tex-text,Scale=MatchLowercase}
+ \newcommand{\euro}{€}
+\else
+ \ifluatex
+ \usepackage{fontspec}
+ \defaultfontfeatures{Mapping=tex-text,Scale=MatchLowercase}
+ \newcommand{\euro}{€}
+ \else
+ \usepackage[T1]{fontenc}
+ \usepackage[utf8]{inputenc}
+ \fi
+\fi
+% use upquote if available, for straight quotes in verbatim environments
+\IfFileExists{upquote.sty}{\usepackage{upquote}}{}
+% use microtype if available
+\IfFileExists{microtype.sty}{\usepackage{microtype}}{}
+\PassOptionsToPackage{hyphens}{url}
+\usepackage{hyperref}
+\usepackage{ulem}
+
+% Comment these out if you don't want a slide with just the
+% part/section/subsection/subsubsection title:
+\AtBeginPart{
+ \let\insertpartnumber\relax
+ \let\partname\relax
+ \frame{\partpage}
+}
+\AtBeginSection{
+ \let\insertsectionnumber\relax
+ \let\sectionname\relax
+ \begin{frame}[plain]
+ \tableofcontents[currentsection]
+ \end{frame}
+}
+\AtBeginSubsection{
+ \let\insertsubsectionnumber\relax
+ \let\subsectionname\relax
+ \frame{\subsectionpage}
+}
+
+\setlength{\parindent}{0pt}
+\setlength{\parskip}{6pt plus 2pt minus 1pt}
+\setlength{\emergencystretch}{3em} % prevent overfull lines
+\setcounter{secnumdepth}{0}
+% Thanks Richard Darst on how to get a nice Beamer theme.
+% See http://rkd.zgib.net/wiki/DebianBeamerThemes
+
+\usepackage{multicol}
+\usepackage[absolute,overlay]{textpos}
+\usepackage{tikz}
+\usepackage{ctable}
+\usetikzlibrary{positioning}
+
+\usebackgroundtemplate{\includegraphics[width=\paperwidth]{images/swirl-lightest.pdf}}
+\newif\ifplacelogo
+\placelogotrue
+\logo{\ifplacelogo\includegraphics[viewport=274 335 360 440,width=1cm]{images/openlogo-nd.pdf}\fi}
+
+\definecolor{debianred}{rgb}{.780,.000,.211} % 199,0,54
+\definecolor{debianblue}{rgb}{0,.208,.780} % 0,53,199
+\definecolor{debianlightbackgroundblue}{rgb}{.941,.941,.957} % 240,240,244
+\definecolor{debianbackgroundblue}{rgb}{.776,.784,.878} % 198,200,224
+
+\usetheme{Boadilla}
+\setbeamertemplate{navigation symbols}{}
+
+\usecolortheme[named=debianbackgroundblue]{structure}
+\setbeamercolor{normal text}{fg=black}
+\setbeamercolor{titlelike}{fg=debianblue}
+\setbeamercolor{sidebar}{fg=debianred,bg=debianbackgroundblue}
+
+\setbeamercolor{palette sidebar primary}{fg=debianred}
+\setbeamercolor{palette sidebar secondary}{fg=debianred}
+\setbeamercolor{palette sidebar tertiary}{fg=debianred}
+\setbeamercolor{palette sidebar quaternary}{fg=debianred}
+
+\setbeamercolor{section in toc}{fg=debianred}
+\setbeamercolor{subsection in toc}{parent=debianred}
+
+\setbeamercolor{item}{fg=debianred}
+
+\setbeamercolor{block title}{fg=debianblue}
+
+\title[Reproducible builds everywhere]{Reproducible
+builds everywhere \\ eg. in Debian, OpenWrt and LEDE}
+\subtitle{Bit by bit identical binaries \\
+from a given source}
+\author[h01ger and lynxis]{%
+ \texorpdfstring{
+ \centering
+ Alexander 'lynxis' Couzens\\
+ Holger 'h01ger' Levsen
+ }{h01ger and lynxis}}
+\date[OpenWrt Summit, Berlin]{%
+ OpenWrt Summit in Berlin, Germany\\
+ \small{2016-10-13}}
+
+\begin{document}
+
+\begin{frame}[plain]
+ \titlepage
+\end{frame}
+
+\begin{frame}
+ \frametitle{about h01ger}
+
+ \begin{itemize}
+ \item \small{\texttt{B8BF 5413 7B09 D35C F026 FE9D 091A B856 069A AA1C}}
+ \item Debian user since 1995
+ \item Debian contributor since 2001
+ \item OpenWrt user since 2006
+ \item Debian developer since 2007
+ \item DebConf organizer,
+ founded the DebConf video team
+ \begin{itemize}
+ \item \texttt{http://video.debian.net}
+ \end{itemize}
+ \item Debian-Edu (Debian for education)
+ \item Debian QA (quality assurance)
+ \begin{itemize}
+ \item \texttt{https://piuparts.debian.org}
+ \item \texttt{https://jenkins.debian.net} (~1200 jobs continously testing Debian)
+ \end{itemize}
+ \item Debian Reproducible builds team member
+ \begin{itemize}
+ \item since April 2015 funded by the Linux Foundation
+ \end{itemize}
+ \end{itemize}
+\end{frame}
+
+\placelogofalse
+
+\begin{frame}
+ \frametitle{about lynxis}
+
+ \begin{itemize}
+ \item \small{\texttt{390D CF78 8BF9 AA50 4F8F F1E2 C29E 9DA6 A0DF 8604}}
+ \item Debian user since 2003
+ \item OpenWrt user since 2006
+ \item LEDE founding member
+ \item coreboot hacker
+ \item tests.reproducible-builds.org contributor
+ \item CCC member
+ \end{itemize}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.08\paperwidth, 0.12\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.15\paperheight]{images/lede.png}
+ };
+ \end{tikzpicture}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.85\paperwidth, 0.1\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.3\paperheight]{images/openwrt.png}
+ };
+ \end{tikzpicture}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{about OpenWrt and LEDE}
+
+ \begin{itemize}
+ \item In this talk we'll ignore the distinction between the two:
+ \item when we say "OpenWrt" me mean "LEDE and OpenWrt",
+ \item when we say "LEDE" me mean "OpenWrt and LEDE",
+ \item when we say "OpenWrt and LEDE" we mean "LEDE and OpenWrt".
+ \item<2> They are two projects though and when there are differences we'll
+ mention them.
+ \end{itemize}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.14\paperwidth, 0.1\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.3\paperheight]{images/openwrt.png}
+ };
+ \end{tikzpicture}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.93\paperwidth, 0.11\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.15\paperheight]{images/lede.png}
+ };
+ \end{tikzpicture}
+
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{Who are you?}
+ \begin{itemize}
+ \item<2-4> Seen a talk about reproducible builds?
+ \item<3-4> Contributed to the effort?
+ \item<4> Uses Debian or a Debian based system?
+ \end{itemize}
+\end{frame}
+
+\placelogotrue
+
+\begin{frame}
+ \frametitle{Debian reproducible builds team}
+ \begin{center}
+ \begin{columns}
+ \footnotesize
+ \column{.30\linewidth}
+ {akira} \\
+ {Alexis Bienvenüe} \\
+ {Andrew Ayer} \\
+ {Asheesh Laroia} \\
+ {Ceridwen} \\
+ {Chris Lamb} \\
+ {Chris West} \\
+ {Christoph Berg} \\
+ {Daniel Kahn Gillmor} \\
+ {Daniel Shahaf} \\
+ David Suarez \\
+ {Dhole} \\
+ Drew Fisher \\
+ Emmanuel Bourg \\
+ Emanuel Bronshtein \\
+ Esa Peuha \\
+ \column{.30\linewidth}
+ {Fabian Wolff} \\
+ {Guillem Jover} \\
+ Hans-Christoph Steiner \\
+ {Helmut Grohne} \\
+ \only<1>{Holger Levsen}\only<2>{{\color{debianred} Holger Levsen}} \\
+ HW42 \\
+ Intrigeri \\
+ {Jelmer Vernooij} \\
+ {josch} \\
+ Juan Picca \\
+ {Lunar} \\
+ Mathieu Bridon \\
+ {Mattia Rizzolo} \\
+ Nicolas Boulenguez \\
+ {Niels Thykier} \\
+ Niko Tyni \\
+ \column{.30\linewidth}
+ {Paul Wise} \\
+ Peter De Wachter \\
+ Philip Rinn \\
+ {Reiner Herrmann} \\
+ {Santiago Vila} \\
+ {Sascha Steinbiss} \\
+ {Satyam Zode} \\
+ {Scarlett Clark} \\
+ {Stefano Rivera} \\
+ {Stéphane Glondu} \\
+ {Steven Chamberlain} \\
+ Tom Fitzhenry \\
+ {Valerie Young} \\
+ Valentin Lorentz \\
+ {Wookey} \\
+ {Ximin Luo} \\
+ \end{columns}
+ \end{center}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{jenkins.debian.net.git contributors}
+ \begin{center}
+ \begin{columns}
+ \small
+ \column{.46\linewidth}
+ {akira} \\
+ \only<1>{Alexander Couzens}\only<2>{{\color{debianred} Alexander Couzens}} \\
+ \only<1>{Levente 'anthraxx' Polyak}\only<2>{{\color{debianred} Levente 'anthraxx' Polyak}} \\
+ {Antonio Terceiro} \\
+ {Axel Beckert} \\
+ \only<1>{Bryan Newbold}\only<2>{{\color{debianred} Bryan Newbold}} \\
+ {Chris Lamb} \\
+ {Daniel Kahn Gillmor} \\
+ {Gabriele Giacone} \\
+ \only<1>{Hans-Christoph Steiner}\only<2>{{\color{debianred} Hans-Christoph Steiner}} \\
+ Helmut Grohne \\
+ \only<1>{Holger Levsen}\only<2>{{\color{debianred} Holger Levsen}} \\
+ \only<1>{HW42}\only<2>{{\color{debianred} HW42}} \\
+ {James McCoy} \\
+ {Joachim Breitner} \\
+ \column{.46\linewidth}
+ {Johannes 'josch' Schauer} \\
+ {Jérémy Bobbio} \\
+ {Mattia Rizzolo} \\
+ {Niels Thykier} \\
+ {Paul Wise} \\
+ {Petter Reinholdtsen} \\
+ {Philip Hands} \\
+ \only<1>{Reiner Herrmann}\only<2>{{\color{debianred} Reiner Herrmann}} \\
+ {Samuel Thibault} \\
+ {Steven Chamberlain} \\
+ {Tails developers} \\
+ {Ulrike Uhlig} \\
+ {Wolfgang Schweer} \\
+ {Wouter Verhelst} \\
+ \end{columns}
+ \end{center}
+\end{frame}
+
+\placelogofalse
+
+
+\section{Motivation}
+
+\begin{frame}
+ \frametitle{The problem}
+
+ \begin{center}
+ \includegraphics[width=0.7\textwidth]{images/31c3.png}
+
+ Available on \url{media.ccc.de}, 31c3
+ \end{center}
+\end{frame}
+
+\begin{frame}[fragile]
+ \frametitle{A few examples from that 31c3 talk}
+ \begin{itemize}
+ \item CVE-2002-0083: remote root exploit in \texttt{sshd}, a single bit difference in the binary
+ \item<2-5> 31c3 talk had a live demo with a kernel module modifying source code in memory only
+ \item<3-5> How can you be sure what's running on your machine or on a build
+ daemon network connected to the net? Do you ever leave your computers physically alone?
+ \item<4-5> Huge financial incentives to crack developer machines or a project's
+ build infrastructure…
+ \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]
+ \frametitle{Another example from real life}
+
+ At a CIA conference in 2012:
+ \begin{center}
+ \includegraphics[width=0.8\textwidth]{images/strawhorse.png}
+
+ {\footnotesize
+ \url{firstlook.org/theintercept/2015/03/10/ispy-cia-campaign-steal-apples-secrets/}
+ }
+ \end{center}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{The solution}
+
+ \begin{center}
+ \Large{
+ Promise that anyone can always generate
+ identical binary packages
+ from a given source}
+\end{center}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{The solution}
+
+ \begin{center}
+ We call this:
+
+ \Huge{ “Reproducible builds” }
+ \end{center}
+\end{frame}
+
+\placelogotrue
+
+\begin{frame}
+ \frametitle{Debian demo (skipped)}
+ \begin{itemize}
+ \item Build a package 5 times, get 5 .debs with different checksums
+ \item Build a package 5 times, get 5 .debs with the same checksum\\
+ \only<2>{Yes, it's really this simple.}
+ \end{itemize}
+% show this once running in plain sid,
+% and then in sid with our modified toolchain.
+%
+% prepare demo:
+% mkdir demo ; cd demo ; apt-get source giftrans
+%
+% do demo:
+% PTH=$(mktemp -d); OPTH=$PWD; P=giftrans; cp ${P}_* $PTH/; cd $PTH ;
+% dpkg-source -x ${P}*.dsc ; for X in 1 2 3 4 5 ; do (cd ${P}-*/;
+% dpkg-buildpackage -b -uc -us); mkdir -p .$X ; cp $P_*.deb .$X; done ; rm
+% *.deb ; echo; sha1sum *dsc *z .*/*.deb | grep -v giftrans-dbgsym ; cd - ;
+% rm -r $PTH
+\end{frame}
+
+\placelogofalse
+
+\begin{frame}[plain]
+\begin{center}
+ \Huge{This should become the \textbf{norm}.}
+
+ \visible<2>{\small{ We want to change the meaning of "free software":
+
+ it's only free software if it's reproducible!}}
+\end{center}
+\end{frame}
+
+\begin{frame}[fragile]
+ \frametitle{More benefits than "just" security…}
+ \begin{itemize}
+ \item smaller deltas, thus faster updates possible
+ \item in Debian: lots of QA benefits
+ \item Google does reproducible builds, to save money
+ \item …
+ \end{itemize}
+\end{frame}
+
+
+\section{Common ressources}
+
+\begin{frame}
+ \frametitle{reproducible-builds.org}
+
+ \begin{itemize}
+ \item \texttt{https://reproducible-builds.org}
+ \item git repositories, IRC channels, mailinglists, webspace
+ \end{itemize}
+ \begin{center}
+ \includegraphics[width=0.7\textwidth]{images/rbwww1.png}
+ \end{center}
+\end{frame}
+
+
+{
+\usebackgroundtemplate{%
+ \begin{tikzpicture}[remember picture,overlay]%
+ \node[shift={(-0.1\paperwidth, 0.15\paperheight)},at=(current page.south east)] {
+ \includegraphics[width=0.2\paperwidth]{images/diffoscope_logo.png}
+ };
+ \end{tikzpicture}%
+}
+
+\begin{frame}{diffoscope}
+ \frametitle{Debugging problems: \texttt{https://try.diffoscope.org}}
+
+ \begin{itemize}
+ \item Examines differences \textbf{in depth}.
+ \item Recursively unpacks archives, uncompresses PDFs, disassembles
+ binaries, unpacks Gettext files, …
+ \item Easy to extend to new file formats.
+ \item Falls back to binary comparison.
+ \item Outputs HTML or plain text with human readable differences.
+ \item Available from \texttt{git}, PyPI, Debian, \\
+ Arch Linux, Guix, Homebrew. Works on BSD.
+ \item Maintainers in other distros wanted.
+ \item \url{https://diffoscope.org/}
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{\texttt{diffoscope} example (HTML output)}
+ \begin{tikzpicture}[remember picture]
+ \node[at=(current page.center)] {
+ \includegraphics[width=0.9\paperwidth]{images/diffoscope_example_html.png}
+ };
+ \end{tikzpicture}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{\texttt{diffoscope} is "just" for debugging}
+
+ \begin{itemize}
+ \item Reminder: \texttt{diffoscope} is for \textbf{debugging}
+ \item "reproducible" according to our definition means: \textbf{bit by bit
+ identical}. So the tools for testing whether something is reproducible are
+ either \texttt{diff} or \texttt{sha256sum}!
+ \item<2> \texttt{https://try.diffoscope.org}
+ \end{itemize}
+\end{frame}
+
+}
+
+\placelogotrue
+
+
+\begin{frame}
+ \frametitle{tests.reproducible-builds.org}
+
+ \begin{itemize}
+ \item Continuously testing Debian \texttt{testing}, \texttt{unstable} and
+ \texttt{experimental}
+ \item Also testing: coreboot, OpenWrt, LEDE, NetBSD, FreeBSD,
+ Arch Linux, Fedora and soon F-Droid too
+ \item 8-12 \texttt{amd64} nodes, 150 cores and soon 500 GB RAM - thanks to
+ Profitbricks.com!
+ \item 22 \texttt{armhf} nodes, 98 cores and 53 GB RAM
+ \item 329 jenkins jobs running on jenkins.debian.net
+ \item 43 scripts in Python and Bash, 283 lines of code in average
+ \item 37 contributors for \texttt{jenkins.debian.net.git}
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}[fragile]
+ \frametitle{Variations (when testing Debian)}
+
+ \begin{center}
+ \begin{table}
+ \resizebox{0.95\textwidth}{!}{%
+ \begin{tabular}{l|ll}
+\textbf{variation} & \textbf{first build} & \textbf{second build} \\
+\hline
+hostname & \texttt{jenkins} & \texttt{i-capture-the-hostname} \\
+domainname & \texttt{debian.net} & \texttt{i-capture-the-domainname} \\
+\texttt{env TZ} & \texttt{GMT+12} & \texttt{GMT-14} \\
+\texttt{env LANG} & \texttt{C} & \texttt{fr\_CH.UTF-8} \\
+\texttt{env LC\_ALL} & not set & \texttt{fr\_CH.UTF-8} \\
+\texttt{env USER} & \texttt{pbuilder1} & \texttt{pbuilder2} \\
+uid & \texttt{1111} & \texttt{2222} \\
+gid & \texttt{1111} & \texttt{2222} \\
+UTS namespace & shared with the host & \textit{modified using \texttt{/usr/bin/unshare --uts}} \\
+kernel version & Linux 3.16 or 4.X & on amd64 always varied, on armhf
+sometimes \\
+umask & 0022 & 0002 \\
+CPU type & \multicolumn{2}{l}{varied on i386} \\
+ & on armhf varied a bit, not on amd64 & \\
+filesystem & \multicolumn{2}{l}{same for both builds on amd64: (\texttt{tmpfs}), on armhf \texttt{ext3/4}} \\
+ & & \textit{(and we have} \texttt{disorderfs}\textit{, but the code is disabled)} \\
+year, month, date & \multicolumn{2}{l}{on amd64: 398 days variation, on armhf not yet} \\
+hour, minute & \multicolumn{2}{l}{hour is usually the same… usually, the minute differs… } \\
+\textit{everything else} & \multicolumn{2}{l}{\textit{is likely the same…}}
+ \end{tabular}
+ }
+ \end{table}
+ \end{center}
+\end{frame}
+
+\placelogofalse
+
+\begin{frame}
+ \frametitle{Common problems}
+
+ \begin{itemize}
+ \item time stamps
+ \item timezones
+ \item locales
+ \item build paths
+ \item everything else (seperated into known issues and the blurry rest)
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Documentation about common problems}
+ \begin{itemize}
+ \item \texttt{https://reproducible-builds.org/docs}
+ \item Lunar's talk from CCCamp 2015 also on
+ \texttt{https://media.ccc.de}
+ \begin{tikzpicture}[remember picture]
+ \node[shift={(-1.05\paperwidth, -0.3\paperheight)},at=(current page.south east)] {
+ \includegraphics[width=0.83\textwidth]{images/cccamp2015_lunar_random.png}
+ };
+ \end{tikzpicture}
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{\texttt{SOURCE\_DATE\_EPOCH}}
+
+ \begin{itemize}
+ \item Build date (timestamps) usually not useful for the user
+ \item \texttt{SOURCE\_DATE\_EPOCH} is defined as the last modification of
+ the source, since the epoch (1970-01-01)
+ \item can be used instead of current date
+ \item can also be used for random seeds etc.
+ \item in Debian, set from the latest \texttt{debian/changelog} entry
+ \item can be set to the latest git commit too or the latest file
+ modification date
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{\texttt{SOURCE\_DATE\_EPOCH}}
+
+ \begin{itemize}
+ \item \texttt{SOURCE\_DATE\_EPOCH} spec available:
+ \item \texttt{https://reproducible-builds.org/specs/}
+ \item many upstreams support it already
+ \item has been adopted by other distributions
+ (OpenWrt, LEDE, NetBSD, FreeBSD, Arch Linux, coreboot, Guix, …) and many many
+ upstreams (GCC, dpkg, rpm, mkisofs, ghostscript, libxslt, sphinx,
+ texlive-bin, …)
+ \end{itemize}
+\end{frame}
+
+
+\placelogotrue
+
+\section{Status Debian}
+
+\begin{frame}
+ \frametitle{Progress in Debian \texttt{testing} ("stretch")}
+ \begin{tikzpicture}[remember picture]
+ \node[shift={(-0.5\paperwidth, \paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.65\paperheight]{images/stats_pkg_state_testing.png}
+ };
+ \end{tikzpicture}
+ \begin{center}
+ \footnotesize{21,527 (91.2\%) out of 23,597 source packages are reproducible \\
+ in our test framework on \texttt{amd64}}
+ \vfill
+ \end{center}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Progress in Debian \texttt{unstable}}
+ \begin{tikzpicture}[remember picture]
+ \node[shift={(-0.5\paperwidth, \paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.65\paperheight]{images/stats_pkg_state_unstable.png}
+ };
+ \end{tikzpicture}
+ \begin{center}
+ \footnotesize{18,898 (75.8\%) out of 24,931 source packages are reproducible \\
+ in our test framework on \texttt{amd64}} (difference due to build path variations)
+ \vfill
+ \end{center}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{Progress in the Debian bug tracker}
+ \begin{tikzpicture}[remember picture]
+ \node[shift={(-0.5\paperwidth, \paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.65\paperheight]{images/stats_bugs_sin_ftbfs_state.png}
+ };
+ \end{tikzpicture}
+ \begin{center}
+ \footnotesize{As a rule, we file bugs with patches. \\
+ There are very few exceptions.}
+ \vfill
+ \end{center}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Details on tests.reproducible-builds.org}
+
+ \begin{itemize}
+ \item \url{https://reproducible.debian.net/$src}
+ \item 43 package sets
+ \item 250 categorised distinct issues
+ \item 6,944 notes
+ \item 1,894 unreproducible packages in \texttt{stretch} (testing), but only
+ 177 without a note (5,777 in \texttt{unstable} but also only 277 without a
+ note)
+ \item maintained in \texttt{notes.git} by 47 contributors
+ \item currently Debian only, but cross distro notes are planned
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{Summary / What's left to do}
+ \begin{itemize}
+ \item This is a proof-of-concept, Debian is neither 91.2\% reproducible nor
+ 75.8\%. (and 10\% > 2,300 sources packages!)
+ \item<2-4> All our required changes are finally in Debian now, except
+ \texttt{dpkg} and \texttt{.buildinfo} file support on the archive side.
+ \item<3-4> We hope that Debian 9, "stretch", will be partially reproducible
+ in a meaningful way, in 2017.
+ \item<3-4> What's beyond (rebuilding, \texttt{.buildinfo} file handling, user
+ tools) still needs \it{design} and code.
+ \item<4> Will Debian 10, "buster", be 100\% reproducible?
+ \end{itemize}
+\end{frame}
+
+
+
+
+
+\begin{frame}
+ \frametitle{Tell the world \& collaborate}
+
+ \begin{itemize}
+ \item "We don't care about Debian (only), we care about free and open
+ source software."
+ \item<2-4> Weekly reports since May 2015
+ \item<3-4> First Reproducible World Summit in December 2015 (Athens, Greece)
+ \begin{itemize}
+ \item<3-4> 40 people from 16 projects
+ \item<3-4> \texttt{reproducible.debian.net} has become \texttt{tests.reproducible-builds.org}
+ \end{itemize}
+ \item<4> Second Reproducible World Summit in December 2016 in Berlin
+ \begin{itemize}
+ \item<4> Talk to h01ger if you want to attend.
+ \end{itemize}
+ \end{itemize}
+\end{frame}
+
+
+
+\section{Status Non-Debian World}
+
+\placelogofalse
+
+\begin{frame}
+ \frametitle{Skipping some…}
+ \begin{itemize}
+ \item \texttt{https://tests.r-b.org/coreboot}
+ \item \texttt{https://tests.r-b.org/netbsd}
+ \item \texttt{https://tests.r-b.org/freebsd}
+ \item paused: \texttt{https://tests.r-b.org/archlinux}
+ \item paused: \texttt{https://tests.r-b.org/fedora}
+ \item not yet: \texttt{https://tests.r-b.org/f-droid}
+ \end{itemize}
+ \begin{center}
+ \includegraphics[height=0.13\paperheight]{images/coreboot.png}
+ \hspace{0.05\paperwidth}
+ \includegraphics[height=0.13\paperheight]{images/netbsd.png}
+ \hspace{0.05\paperwidth}
+ \includegraphics[height=0.13\paperheight]{images/freebsd.png}
+ \hspace{0.05\paperwidth}
+ \includegraphics[height=0.13\paperheight]{images/archlinux.png}
+ \hspace{0.05\paperwidth}
+ \includegraphics[height=0.13\paperheight]{images/fedora.png}
+\end{center}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{Skipping some more…}
+ \begin{itemize}
+\item Bitcoin (2011)
+\item Tor (2013)
+\item NixOS, Guix, ElectroBSD
+\item Qubes, Tails
+\item very few commercial, propietary software (\only<1>{guess
+where}\only<2>{gamblingmachines}!)
+\item ?
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{OpenWrt and LEDE tested for reproducible builds}
+ \begin{itemize}
+ \item<2> \texttt{https://tests.r-b.org/openwrt}
+ \item<2> \texttt{https://tests.r-b.org/lede}
+ \item<2> reproducible\_(openwrt\_common|openwrt|lede).sh scripts in \texttt{jenkins.debian.net.git}
+ \item<2> 1,073/1,089 packages and 12/1 (OpenWrt/LEDE) images tested each week
+ \item<2> variations: TZ, LANG, LC\_ALL, PATH, (umask), make -j, linux64 --uname-2.6, CAPTURE\_ENVIRONMENT
+ \end{itemize}
+
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.14\paperwidth, 0.1\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.3\paperheight]{images/openwrt.png}
+ };
+ \end{tikzpicture}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.93\paperwidth, 0.11\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.15\paperheight]{images/lede.png}
+ };
+ \end{tikzpicture}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Thanks to these OpenWrt / LEDE reproducible builds contributors}
+ \begin{center}
+ \begin{columns}
+ \column{.46\linewidth}
+ {Alexander Couzens} \\
+ {Bryan Newbold} \\
+ {Dirk Neukirchen} \\
+ {Felix Fietkau} \\
+ {Jonas Gorski} \\
+ {Jo-Philipp Wich} \\
+ {Nathan Hintz} \\
+ {Reiner Herrmann} \\
+ \end{columns}
+ \end{center}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.08\paperwidth, 0.12\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.15\paperheight]{images/lede.png}
+ };
+ \end{tikzpicture}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.85\paperwidth, 0.1\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.3\paperheight]{images/openwrt.png}
+ };
+ \end{tikzpicture}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{TODO for tests.r-b.org/(openwrt|lede)}
+ \begin{itemize}
+ \item we should add more variations (date, time, build path, hostname, domain, use disorderfs, CPU type,
+ kernel, USER, HOME, SHELL, the base system).
+ \item we should test more targets.
+ \item<2-3> we could build other branches too…
+ \item<2-3> we could build OpenWrt + LEDE at least every day, thanks again to
+ Profitbricks.com.
+ \item<3> we want to make \textbf{you} look at these pages every day!
+ \end{itemize}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.14\paperwidth, 0.1\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.3\paperheight]{images/openwrt.png}
+ };
+ \end{tikzpicture}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.93\paperwidth, 0.11\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.15\paperheight]{images/lede.png}
+ };
+ \end{tikzpicture}
+\end{frame}
+
+\begin{frame}
+ \frametitle{TODO: design \texttt{.buildinfo} files for OpenWrt and LEDE}
+ \begin{itemize}
+ \item rfc822 format
+ \item needs to define the environment
+ \item needs to define the sources (input)
+ \item needs to define the binaries (output)
+ \item<2> Debian has only .deb files as output, while OpenWrt/LEDE have packages
+ and images…
+ \end{itemize}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.08\paperwidth, 0.12\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.15\paperheight]{images/lede.png}
+ };
+ \end{tikzpicture}
+ \begin{tikzpicture}[remember picture,overlay]
+ \node[shift={(-0.85\paperwidth, 0.1\paperheight)},at=(current page.south east)] {
+ \includegraphics[height=0.3\paperheight]{images/openwrt.png}
+ };
+ \end{tikzpicture}
+\end{frame}
+
+
+\section{Future work}
+
+\begin{frame}
+ \frametitle{Rebuilds and sharing signed checksums}
+ \begin{itemize}
+ \item Almost no work has been done here yet. We are just at the first step:
+ being able to rebuild reproducibly…
+ \item Different projects, different solutions?
+ \begin{itemize}
+ \item<2> something like \texttt{.buildinfo} files (defining the environment,
+ the input and the output(s)) will be needed everywhere, but so far we only
+ have them for Debian…
+ \end{itemize}
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Rebuilders and sharing signed checksums, cont.}
+ \begin{itemize}
+ \item Individuelly signed checksums (think web of trust) could work in the
+ Debian case (we have a gpg web of trust), but IMO won't scale.
+ \item { Another idea: rebuilders, run by large organisations
+ (ACLU, CCC, CERN, Deutsche Bank, EDF, EON, Greenpeace, NASA, NSA, XYZ).}
+ \item Fedora rebuilds Debian, Debian rebuilds OpenSUSE, OpenSUSE rebuilds
+ NetBSD, etc…
+ \item Big customers could just rebuild everything themselves.
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{Integration in user tools}
+ \begin{itemize}
+ \item "Do you really want to install this unreproducible software (y/N)"
+ \item<2-3> "Do you want to build those packages which have unconfirmed checksums,
+ before installing? (Y/n)"
+ \item<3>{ "How many signed checksums do you require to call a package
+ 'reproducible'?" - and whom do you trust?}
+ \end{itemize}
+\end{frame}
+
+
+\section{Getting involved}
+
+\begin{frame}
+ \frametitle{As a software developer}
+ \begin{itemize}
+ \item Stop using build dates
+ \item Use \texttt{SOURCE\_DATE\_EPOCH} instead
+ \item See \url{https://reproducible-builds.org/specs/}
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{Form your reproducible builds team!}
+ \begin{itemize}
+ \item Why?
+ \begin{itemize}
+ \item Every distribution should be reproducible!
+ \item Learn something new everyday
+ \item Change the (software) world!
+ \item \texttt{https://tests.reproducible-builds.org/openwrt} needs \textbf{your} help
+ \item \texttt{https://tests.reproducible-builds.org/lede} needs \textbf{your} help
+ \end{itemize}
+ \item How to get started?
+ \begin{itemize}
+ \item Build something twice, run diffoscope on the results.
+ \item Talk to lynxis or h01ger here or talk to us on IRC or via mail.
+ \item RTFM, there is lots of documentation
+ \item Experiment - learning by doing
+ \end{itemize}
+ \end{itemize}
+\end{frame}
+
+\section{Questions, comments, ideas?}
+
+\placelogotrue
+
+\begin{frame}
+ \frametitle{Thanks to…! …and thank \textbf{you}, too!}
+
+ \begin{itemize}
+ \item
+ {All “Reproducible Builds” contributors \\
+ {\small (you are just \textbf{so} awesome!)}}
+ \item OpenWrt Summit and ELCE
+\end{itemize}
+
+ \begin{center}
+ \includegraphics[height=0.1\paperheight]{images/linux_foundation_logo.png}
+ \hspace{0.1\paperwidth}
+ \includegraphics[height=0.1\paperheight]{images/cii_logo.png}
+ \hspace{0.1\paperwidth}
+ \includegraphics[height=0.1\paperheight]{images/profitbricks_logo.png}
+ \end{center}
+
+ \vfill
+ \begin{center}
+ \resizebox{0.9\textwidth}{!}{%
+ \begin{tabular}{rl}
+ \texttt{holger at debian.org} & \texttt{B8BF 5413 7B09 D35C F026} \\
+ & \texttt{FE9D 091A B856 069A AA1C} \\
+ \texttt{lynxis at fe80.eu} & \texttt{390D CF78 8BF9 AA50 4F8F} \\
+ & \texttt{F1E2 C29E 9DA6 A0DF 8604}
+\end{tabular}
+ }
+ \end{center}
+\end{frame}
+
+\placelogofalse
+
+\begin{frame}
+ \frametitle{Questions, comments, ideas?}
+
+ \begin{itemize}
+ \item \url{https://reproducible-builds.org/}
+ \item \texttt{\#reproducible-builds} on \texttt{irc.OFTC.net}
+ \item \url{https://lists.reproducible-builds.org}
+ \item twitter: @ReproBuild
+ \item<2> Mike and Seth's talk from 31c3 about motivations
+ \item<2> Lunar's talk about fixing reproducible issues from CCCamp 15
+ \item<2> h01ger's talk "the Reproducible builds ecosystem" from FOSDEM 16
+ \end{itemize}
+\end{frame}
+
+\placelogotrue
+
+\begin{frame}{}
+\begin{textblock}{12}(2, 6)
+ \tiny{
+ Copyright \copyright{} 2014--2016 \\
+ Holger Levsen \texttt{holger at layer-acht.org} and others.\\[3.0mm]
+ Copyright of images included in this document are held by
+ their respective owners.
+ \\[3.0mm]
+ This work is licensed under the \alert{Creative Commons
+ Attribution-Share Alike 3.0} License. To view a copy of this
+ license, visit
+ \url{http://creativecommons.org/licenses/by-sa/3.0/} or send a
+ letter to Creative Commons, 171 Second Street, Suite 300, San
+ Francisco, California, 94105, USA.
+ \\[2.0mm]
+ % Give a link to the 'Transparent Copy', as per Section 3 of the GFDL.
+ The source of this document is available from
+ \url{https://anonscm.debian.org/git/reproducible/presentations.git}.
+ }
+ \end{textblock}
+\end{frame}
+
+\end{document}
diff --git a/2017-01-27-devconf.cz/Makefile b/2017-01-27-devconf.cz/Makefile
new file mode 100644
index 0000000..b233336
--- /dev/null
+++ b/2017-01-27-devconf.cz/Makefile
@@ -0,0 +1,29 @@
+.PHONY: all source images
+
+PRESENTATION = 2016-10-13-OpenWrt-Summit
+
+all: $(PRESENTATION).pdf
+
+source: $(PRESENTATION)-src.tar.gz
+
+IMGS = $(shell sed -n -e 's/^[^%]*\\includegraphics\([^{]*\)\?{\([^}]*\)}.*$$/\2/p' $(PRESENTATION).tex | sort -u)
+
+$(PRESENTATION).pdf: $(PRESENTATION).tex $(IMGS)
+ set -e && \
+ build=1; \
+ while [ $$build -le 5 ]; do \
+ build=$$(($$build + 1)); \
+ lualatex $<; \
+ if sha1sum -c $(PRESENTATION).aux.sha1sum > /dev/null 2>&1; then \
+ break; \
+ fi; \
+ sha1sum $(PRESENTATION).aux > $(PRESENTATION).aux.sha1sum; \
+ done
+
+clean:
+ rm -f $(PRESENTATION).aux $(PRESENTATION).log $(PRESENTATION).nav \
+ $(PRESENTATION).out $(PRESENTATION).snm $(PRESENTATION).toc \
+ $(PRESENTATION).vrb $(PRESENTATION).aux.sha1sum $(PRESENTATION).pdfpc
+
+distclean:
+ rm -f $(PRESENTATION).pdf
diff --git a/2017-01-27-devconf.cz/demo/giftrans_1.12.2-19.debian.tar.xz b/2017-01-27-devconf.cz/demo/giftrans_1.12.2-19.debian.tar.xz
new file mode 100644
index 0000000..cc9764c
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diff --git a/2017-01-27-devconf.cz/demo/giftrans_1.12.2-19.dsc b/2017-01-27-devconf.cz/demo/giftrans_1.12.2-19.dsc
new file mode 100644
index 0000000..1e84554
--- /dev/null
+++ b/2017-01-27-devconf.cz/demo/giftrans_1.12.2-19.dsc
@@ -0,0 +1,43 @@
+-----BEGIN PGP SIGNED MESSAGE-----
+Hash: SHA1
+
+Format: 3.0 (quilt)
+Source: giftrans
+Binary: giftrans
+Architecture: any
+Version: 1.12.2-19
+Maintainer: Debian QA Group <packages at qa.debian.org>
+Homepage: https://www.abdn.ac.uk/tools/ibmpc/giftrans/index.hti
+Standards-Version: 3.9.6
+Vcs-Browser: https://github.com/lamby/pkg-giftrans
+Vcs-Git: git://github.com/lamby/pkg-giftrans.git
+Build-Depends: debhelper (>= 9)
+Package-List:
+ giftrans deb graphics optional arch=any
+Checksums-Sha1:
+ 816067762fe7d41f2b73f0acd2da0e51a1b93f27 9036 giftrans_1.12.2.orig.tar.gz
+ a931a19e832024f509f7902b2b5560f8e46f004b 6820 giftrans_1.12.2-19.debian.tar.xz
+Checksums-Sha256:
+ f38872b7dd2b0717768f29e3bd9b16c8898f0fe31183a41469b7728248d38b39 9036 giftrans_1.12.2.orig.tar.gz
+ 804a7d75d2fa0a9326430cb5194c68b11933deac568f028fdc333ddb89d0e551 6820 giftrans_1.12.2-19.debian.tar.xz
+Files:
+ 886782be6f9bef1798615264ea7ed9f6 9036 giftrans_1.12.2.orig.tar.gz
+ ea3e83079aae0b69a413d8d6b2e797a3 6820 giftrans_1.12.2-19.debian.tar.xz
+
+-----BEGIN PGP SIGNATURE-----
+Version: GnuPG v1
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+7d97iAbQR6sdFVfierMC
+=P66h
+-----END PGP SIGNATURE-----
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diff --git a/2017-01-27-devconf.cz/notes b/2017-01-27-devconf.cz/notes
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+++ b/2017-01-27-devconf.cz/notes
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+notes for openwrt/lede talk…
+ S_D_R? https://wiki.debian.org/ReproducibleBuilds/BuildPathProposal
+
+
+
+
+
+demo: PTH=$(mktemp -d); OPTH=$PWD; P=giftrans; cp ${P}_* $PTH/; cd $PTH ; dpkg-source -x ${P}*.dsc ; for X in 1 2 3 4 5 ; do (cd ${P}-*/; dpkg-buildpackage -b -uc -us); mkdir -p .$X ; cp $P_*.deb .$X; done ; rm *deb ; echo; sha1sum *dsc *z .*/*.deb | grep -v giftrans-dbgsym ; cd - ; echo "don't forget to rm -r $PTH"
+
+
+
+koji records the build
+ can be used to recreate it, in theory, in practice this needs documentation / be done
+rpm container has
+ build date
+ build host
+ signature
+ signature changes between development and release
+
+mention gsoc, new people
+
+emphasize this is too much for me…
+add thanks slide for all the people working on it in other projects
+
+end (or beginning?):
+ the whole world is watching? no (not that slide, but its true… or maybe that slide indeed)
+ fosdem 2014 lunar in a dev room
+ fosdem 2015 lunar and holger in k building
+ fosdem 2016 holger in janson
+ will 2016 be the year of the reproducible linux desktop? maybe
+ or 2017?! (i think so, find a nice pic to prove it)
+ and mayne not on the desktop, but just servers
+ or 85% of Debian main ;-)
+ or something - i'll get into the details later
+
+describe debian test setup
+ debian repo
+ debian bugs categories, nah
+ mention variations from TODO
+
+diffoscope can use debug symbols now
+
+add SOURCE_DATE_EPOCH adoption outside Debian…
+
+need logos:
+ fdroid
+ qubes 4.0
+
+dpkg: mention recent developments… same for ftp!
+re-read: https://wiki.debian.org/ReproducibleBuilds/About etc
+
+explain shortcuts:
+ defined build environment with little variations
+ subsets
+
+many good sideeffects
+ QA QA QA
+ eg also arm bootloader improvements ;)
+ faster builds, saves money
+ check our wiki page on that
+
+future other tests:
+ not all variations debian has are applied, notable not yet date+time
+ seperation of test logic and html page creation planned
+
+future
+ funding
+ another meeting or two in 2016
+ fosdem devroom in 2017?!
+ tests.r-b.o doing rebuilds against releases
+
+disclaimer:
+ the mistakes are mine
+ to better present this here, chronologic order has been changed
+ this is the work of *many* more people than mentioned, this is free software!
diff --git a/2017-01-27-devconf.cz/outline b/2017-01-27-devconf.cz/outline
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+++ b/2017-01-27-devconf.cz/outline
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+Outcomes
+========
+
+ * Get an idea of what has changed
+ * Learn about the open issues and questions to make Stretch (partly)
+ reproducible
+ * Learn how to help
+
+Outline
+=======
+
+What is it and why it matters
+-----------------------------
+
+5 minutes max on what it is and why it matters.
+
+What has changed and available tools
+------------------------------------
+
+What have been done real real quick but point people at:
+https://wiki.debian.org/ReproducibleBuilds/History
+
+Explain past changes in dpkg, debhelper, and others
+
+SOURCE_DATE_EPOCH
+
+strip-nondeterminism
+
+reproducible.debian.net test
+
+.buildinfo
+
+Unresolved issues
+-----------------
+
+.buildinfo signature
+
+Unmerged changes to dpkg and others
+
+others issues?
+
+announce the plenary (come help us figure out the best way to do things)
+
+How can you help
+----------------
+
+reproducible.debian.net web interface
+ useful to find other bugs too
+
+notes.git
+
+IRC channel
+
+debbindiff
+
+prebuilder script — improve the doc before, probably
+
+annonce the hack session (come learn how to fix specific packages)
--
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