[Reproducible-commits] [presentations] 01/01: Initial outline of skroutz.gz talk

Chris Lamb lamby at moszumanska.debian.org
Wed Dec 9 13:01:58 UTC 2015


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commit b9f514807886b1a9749267b359d39fc5bf9333b7
Author: Chris Lamb <lamby at debian.org>
Date:   Wed Dec 9 15:01:07 2015 +0200

    Initial outline of skroutz.gz talk
---
 ...12-10-skroutz.gr-Beyond-Reproducible-builds.tex | 587 +++++++++++++++++++++
 2015-12-10-skroutz.gz/Makefile                     |  29 +
 2015-12-10-skroutz.gz/images/31c3.png              | Bin 0 -> 435876 bytes
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diff --git a/2015-12-10-skroutz.gz/2015-12-10-skroutz.gr-Beyond-Reproducible-builds.tex b/2015-12-10-skroutz.gz/2015-12-10-skroutz.gr-Beyond-Reproducible-builds.tex
new file mode 100644
index 0000000..1effdb0
--- /dev/null
+++ b/2015-12-10-skroutz.gz/2015-12-10-skroutz.gr-Beyond-Reproducible-builds.tex
@@ -0,0 +1,587 @@
+\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{tikz}
+\usepackage{ctable}
+\usetikzlibrary{positioning}
+
+\usebackgroundtemplate{\includegraphics[width=\paperwidth]{images/swirl-lightest.pdf}}
+\logo{\includegraphics[viewport=274 335 360 440,width=1cm]{images/openlogo-nd.pdf}}
+
+\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]{Reproducible Builds}
+
+\author[lamby]{%
+   \texorpdfstring{
+            \centering
+            Chris Lamb \\ 
+            \href{mailto:lamby at debian.org}{lamby at debian.org}
+   }{lamby}}
+\institute[Debian]{}
+\date[skroutz.gr '15]{%
+ skroutz.gr (Athens, Greece)\\
+ \small{2015-12-10}}
+
+\begin{document}
+
+\begin{frame}
+ \titlepage
+\end{frame}
+
+\begin{frame}
+ \frametitle{Debian reproducible builds team}
+ \begin{center}
+  \begin{columns}
+   \small
+   \column{.33\linewidth}
+    {akira} \\
+    {Andrew Ayer} \\
+    {Asheesh Laroia} \\
+    \only<1>{Chris Lamb}\only<2>{{\color{debianblue} Chris Lamb}} \\
+    {Chris West} \\
+    {Christoph Berg} \\
+    {Daniel Kahn Gillmor} \\
+    David Suarez \\
+    {Dhole} \\
+    Drew Fisher \\
+    Esa Peuha \\
+    {Guillem Jover} \\
+   \column{.33\linewidth}
+    Hans-Christoph Steiner \\
+    {Helmut Grohne} \\
+    {Holger Levsen} \\
+    {Jelmer Vernooij} \\
+    {josch} \\
+    Juan Picca \\
+    {Lunar} \\
+    Mathieu Bridon \\
+    {Mattia Rizzolo} \\
+    Nicolas Boulenguez \\
+    {Niels Thykier} \\
+    Niko Tyni \\
+   \column{.33\linewidth}
+    {Paul Wise} \\
+    Peter De Wachter \\
+    Philip Rinn \\
+    {Reiner Herrmann} \\
+    {Stefano Rivera} \\
+    {Stéphane Glondu} \\
+    {Steven Chamberlain} \\
+    Tom Fitzhenry \\
+    Valentin Lorentz \\
+    {Wookey} \\
+    {Ximin Luo} \\
+  \end{columns}
+ \end{center}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Who are you?}
+ \begin{itemize}
+  \item Contributed to Free Software?
+  \item<2-3> Seen a talk about reproducible builds this year?
+  \item<3> Contributed to this effort?
+ \end{itemize}
+\end{frame}
+
+\section{About}
+
+\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 example's from that 31c3 talk}
+ \begin{itemize}
+  \item CVE-2002-0083: remote root exploit in \texttt{sshd}, a single bit difference in binary
+  \item 31c3 talk: live demo with kernel module modifying source code in memory only
+  \item financial incentives to crack developer machines…
+  \item how can you be sure what's running on your machine or on a build
+  daemon network? Do you ever leave your USB3 ports alone?
+ \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}
+
+\section{Progress}
+
+\begin{frame}[plain]
+ \frametitle{Progress in Debian \texttt{unstable}}
+ \begin{center}
+  \includegraphics[height=0.73\paperheight]{images/stats_pkg_state.png}
+
+  \footnotesize{19,257 out of 23,141 source packages are reproducible \\
+    in our test framework}
+  \vfill
+ \end{center}
+\end{frame}
+
+\begin{frame}
+ \frametitle{What we did in Debian since Summer 2014}
+
+ \begin{itemize}
+  \item Agreed on using a fixed build path: \texttt{/build/}
+  \item Recording the build environment: \texttt{.buildinfo}
+  \item \texttt{strip-nondeterminism}
+  \item \texttt{reproducible.debian.net}
+  \item \texttt{diffoscope} (formerly \texttt{debbindiff})
+  \item \texttt{SOURCE\_DATE\_EPOCH}
+  \item \texttt{disorderfs}
+  \item 700+ patches: \texttt{dpkg}, \texttt{debhelper}, \texttt{sbuild}, …
+  \item<2> Tell the world \& collaborate
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{Tell the world \& collaborate}
+
+ \begin{itemize}
+  \item Recent talks (some available with subtitles):
+   \begin{itemize}
+    \item 2015-08-13: Chaos Communication Camp 2015
+    \item 2015-08-20: DebConf15
+    \item 2015-11-08: Mini-DebConf Cambridge 2015
+   \end{itemize}
+  \item Weekly reports since May 2015
+  \item Summit in December 2015 (Athens)
+   \begin{itemize}
+    \item 40 people from 16 projects
+   \end{itemize}
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Tell the world \& collaborate, cont.}
+
+ \begin{itemize}
+  \item \texttt{https://reproducible-builds.org}
+ \end{itemize}
+ \begin{center}
+ \includegraphics[width=0.7\textwidth]{images/rbwww1.png}
+ \end{center}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Stats about reproducible.debian.net}
+
+ \begin{itemize}
+  \item Continuously testing Debian testing, unstable and experimental
+   \begin{itemize}
+    \item \small{ \texttt main only }
+    \item \small{ can we build \texttt contrib without legal troubles? }
+   \end{itemize}
+  \item Also testing coreboot, OpenWrt, NetBSD, FreeBSD,
+  Archlinux and soon Fedora
+   \begin{itemize}
+    \item \small{ those currently only weekly though… }
+   \end{itemize}
+ \end{itemize}
+ \vfill
+ \begin{center}
+  \includegraphics[height=0.47\paperheight]{images/stats_builds_per_day_amd64.png}
+ \end{center}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{More stats on reproducible.debian.net}
+
+ \begin{itemize}
+  \item 122 jenkins jobs running on 12 hosts
+  \item 27 contributors for \texttt{jenkins.debian.net.git}
+  \item 4k lines of Python and 5k lines Bash code
+  \item \texttt{amd64}: 111 cores and 198 GB RAM split on 9 VMs, provided by
+  https://profitbricks.co.uk
+  \item \texttt{armhf}: 18 cores and 9 GB RAM on 6 systems, provided by vagrant at d.o.
+ \end{itemize}
+ \begin{center}
+  \includegraphics[height=0.2\paperheight]{images/profitbricks_logo.png}
+  \vfill
+ \end{center}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Good to know about reproducible.debian.net}
+
+ \begin{itemize}
+  \item \url {https://reproducible.debian.net/$src}
+  \item<2-3> { 165 categorised distinct issues }
+  \item<2-3> { 3,496 packages to be fixed in \texttt{sid}, but only 426 without annotated
+  issues }
+  \item<3> { 29 different "package sets", eg. \texttt{build-essential} is only 78\%
+  reproducible
+   \begin{center}
+    \includegraphics[height=0.5\paperheight]{images/stats_meta_pkg_state_build-essential.png}
+   \vfill
+ \end{center}
+  }
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}[fragile]
+ \frametitle{Variations on reproducible.debian.net}
+
+ \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 3.16.0-4 / 4.2.0-0.bpo & Linux 2.6.56-4 / 2.6.62-0.bpo.1 \\
+umask & 0022 & 0002 \\
+CPU type & \multicolumn{2}{l}{same for both builds \textit{(work in progress)}} \\
+filesystem & \multicolumn{2}{l}{same for both builds \textit{(work in progress - disorderfs)}} \\
+year, month, date & \multicolumn{2}{l}{same for both builds \textit{(work in progress)}} \\
+hour, minute & \multicolumn{2}{l}{hour is usually the same… usually, the minute differs… \textit{(work in progress)}} \\
+\textit{everything else} & \multicolumn{2}{l}{\textit{is likely the same…}}
+    \end{tabular}
+   }
+  \end{table}
+ \end{center}
+\end{frame}
+
+
+{
+\usebackgroundtemplate{%
+ \begin{tikzpicture}[remember picture,overlay]%
+  \node[shift={(-0.15\paperwidth, 0.4\paperheight)},at=(current page.south east)] {
+    \includegraphics[width=0.2\paperwidth]{images/diffoscope_logo.png}
+  };
+ \end{tikzpicture}%
+}
+\begin{frame}{diffoscope}
+ \frametitle{Debugging problems: diffoscope}
+
+ \begin{itemize}
+  \item Examines differences \textbf{in depth}.
+  \item Outputs HTML or plain text with human readable differences.
+  \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 Available from \texttt{git}, PyPI, Debian (sid and stretch), \\
+   Arch Linux, Guix, Homebrew.
+  \item Maintainers in other distros wanted.
+  \item \url{http://diffoscope.org/}
+ \end{itemize}
+\end{frame}
+}
+
+\begin{frame}
+ \frametitle{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{SOURCE\_DATE\_EPOCH}}
+
+ \begin{itemize}
+  \item Build date usually not useful for the user
+  \item Value of \texttt{SOURCE\_DATE\_EPOCH} instead of current date \& for other seeds
+  \item In Debian, set from the latest \texttt{debian/changelog} entry
+  \item General solution for other projects \& distributions
+ \end{itemize}
+\end{frame}
+
+\section{Beyond building}
+
+\begin{frame}
+ \frametitle{Reproducible builds demand a defined build environment}
+ \begin{itemize}
+  \item Re-creating an identical build environment is mandatory too.
+  \item Without an identical build environment, reproducible builds will only
+  happen by sheer luck.
+  \item<2>{Only solved for Debian right now and currently proof of concept only…}
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Debian release process}
+ \begin{itemize}
+  \item In our current design and practices, rebuilding stretch will require
+  package versions which are not part of stretch.
+  \item This design might put a high load on snapshot.debian.org.
+  \item<2-4>{Rebuilding all of Debian a month prio the release? }
+  \item<3-4>{Cross-builds could even speed up slow archs.}
+  \item<4>{More discussions needed. Freeze probably on November 5th 2016.}
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Distributing \texttt{.buildinfo} files}
+ \begin{itemize}
+  \item Probably 100,000 new files per Debian suite; 50\% increase per suite
+  \item Mirrors would not be happy, so should not go there
+  \item We'll need more files when we have detached signatures
+  \item<2>{Revoking signatures?}
+  \item<2>{...}
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Rebuilders and sharing signed checksums}
+ \begin{itemize}
+  \item Almost no work has been done here yet.
+  \item<2-3> Continuous rebuilds should happen in a systematic way and resulting
+  checksums properly published.
+  \item<3> And then we need a system to sign those checksums and share them. 
+ \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 won't scale.
+  \item<2-4> { We'll probably could use systematic rebuilders, run by large organisations
+  (ACLU, CCC, CERN, DECIX, DESY, Deutsche Bank, EDF, EON, Greenpeace, NASA, NSA, XYZ).}
+  \item<3-4> { …and automated installers for those… }
+  \item<4> { …and howtos (\texttt {gpg --gen-key})…}
+ \end{itemize}
+\end{frame}
+
+
+\section{Want to help?}
+
+\begin{frame}
+ \frametitle{As a 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{Get involved - learning by doing}
+
+ \begin{itemize}
+  \item Test for yourself:
+   \begin{itemize}
+    \item Build something twice, run diffoscope on the results
+    \begin{itemize}
+     \item For better results use our “reproducible” repository, \texttt{pbuilder} and a custom config
+    \end{itemize}
+   \end{itemize}
+  \item Docs on the web: \\
+    \small{\url{https://reproducible-builds.org/docs/}} \\
+    \small{\url{https://wiki.debian.org/ReproducibleBuilds/ExperimentalToolchain}}
+  \item Ask for help on \texttt{\#debian-reproducible} or on mailing list
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Join the team!}
+
+ \begin{itemize}
+  \item Why?
+   \begin{itemize}
+    \item \heartsuit{}\heartsuit{}\heartsuit{} Lovely group of people \heartsuit{}\heartsuit{}\heartsuit{}
+    \item Learn something new everyday
+    \item Change the (software) world!
+   \end{itemize}
+  \item What do we do?
+   \begin{itemize}
+    \item Review packages
+    \item Identify issues and document solutions
+    \item \texttt{reproducible.d.n}, diffoscope, strip-nondeterminism
+    \item Propose changes for toolchain
+    \item Submit patches for individual packages
+    \item Write more general documentation and talk to the world
+   \end{itemize}
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Create a new team!}
+
+ \begin{itemize}
+  \item Why?
+   \begin{itemize}
+    \item Every distribution should be reproducible!
+    \item Learn something new everyday
+    \item Change the (software) world!
+   \end{itemize}
+  \item How to get started?
+   \begin{itemize}
+    \item Talk to me 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?}
+
+\begin{frame}
+ \frametitle{Questions, comments, ideas?}
+
+ \begin{itemize}
+  \item \url{https://reproducible-builds.org}
+  \item \url{https://reproducible.debian.net}
+  \item \texttt{\#debian-reproducible} on \texttt{irc.OFTC.net}
+ \end{itemize}
+\end{frame}
+
+
+\begin{frame}
+ \frametitle{Thanks!}
+
+ \begin{itemize}
+  \item Debian “Reproducible Builds” team \\
+        {\small (you are just \textbf{so} awesome!)}
+  \item Linux Foundation and the Core Infrastructure Initiative
+\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}
+ \end{center}
+
+ \vfill
+ \begin{center}
+  \resizebox{0.8\textwidth}{!}{%
+   \begin{tabular}{rl}
+    \texttt{lamby at debian.org} & \texttt{C2FE 4BD2 71C1 39B8 6C53} \\
+                              & \texttt{3E46 1E95 3E27 D431 1E58} 
+   \end{tabular}
+  }
+ \end{center}
+\end{frame}
+
+\end{document}
diff --git a/2015-12-10-skroutz.gz/Makefile b/2015-12-10-skroutz.gz/Makefile
new file mode 100644
index 0000000..33e9968
--- /dev/null
+++ b/2015-12-10-skroutz.gz/Makefile
@@ -0,0 +1,29 @@
+.PHONY: all source images
+
+PRESENTATION = 2015-12-10-skroutz.gr-Beyond-Reproducible-builds
+
+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).pdf
+
+distclean:
+	rm -f $(PRESENTATION).pdf
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-- 
Alioth's /usr/local/bin/git-commit-notice on /srv/git.debian.org/git/reproducible/presentations.git



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