More documentation
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docs/bfh.cls
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docs/bfh.cls
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\NeedsTeXFormat{LaTeX2e}
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\ProvidesClass{bfh}[2015/04/21 Class for my BFH reports]
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\ProvidesClass{bfh}[2015/04/21 Atricle Class for my BFH reports]
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\DeclareOption{a4paper}{\PassOptionsToClass{\CurrentOption}{scrartcl}}
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\DeclareOption{11pt}{\PassOptionsToClass{\CurrentOption}{scrartcl}}
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\DeclareOption{oneside}{\PassOptionsToClass{\CurrentOption}{scrartcl}}
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\DeclareOption{titlepage}{\PassOptionsToClass{\CurrentOption}{scrartcl}}
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\DeclareOption*{\PassOptionsToClass{\CurrentOption}{scrartcl}}
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\ExecuteOptions{a4paper,11pt,oneside}
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\ProcessOptions
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\LoadClass{scrartcl}
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\RequirePackage{remreset}
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\usepackage[utf8]{inputenc}
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\usepackage{graphicx}
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\usepackage{color}
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\usepackage{lmodern}
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\usepackage{url}
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\usepackage{lastpage}
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\LoadClass[12pt]{scrartcl}
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\usepackage{mathtools}
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\usepackage{amsfonts}
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\usepackage[utf8]{inputenc}
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\usepackage{hyperref}
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\usepackage{graphicx}
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\usepackage{float}
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\usepackage{wrapfig}
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%\usepackage{float}
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\usepackage{textgreek}
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\usepackage{centernot}
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%\usepackage{centernot}
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\usepackage{hyphenat}
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\usepackage[T1]{fontenc}
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\usepackage[scaled]{helvet}
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\usepackage{textcomp}
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\usepackage{eurosym}
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\usepackage{fancyhdr}
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\usepackage{alltt}
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\usepackage{verbatim}
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\usepackage{aeguill}
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%\usepackage{underscore}
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\usepackage{ctable}
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\usepackage[english]{babel}
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\usepackage{tabularx}
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\usepackage{wrapfig}
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\usepackage{ifthen}
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\usepackage[usenames,dvipsnames,svgnames]{xcolor}
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\usepackage{hyperref}
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\usepackage{listings}
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\usepackage{attachfile}
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\usepackage{enumitem}
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\usepackage{wasysym}
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\usepackage[absolute]{textpos}
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%\usepackage{cite}
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%\usepackage[backend=bibtex]{biblatex}
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% Literatur- und Bilderquellen trennen
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%\defbibheading{lit}{\section*{Literature}}
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%\defbibheading{pic}{\section*{Pictures}}
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\definecolor{bfhblue}{rgb}{0.396,0.49,0.56} % Blue
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\definecolor{bfhorange}{rgb}{0.961,0.753,0.196} % Orange
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\definecolor{bfhorangelight}{RGB}{246,216,136} % Orange Light
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\hypersetup{
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linkcolor=blue, % color of internal links
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citecolor=green, % color of links to bibliography
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filecolor=blue, % color of file links
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urlcolor=blue, % color of external links
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colorlinks=true
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}
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\urlstyle{same}
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\typearea{12}
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%\bibliographystyle{alpha}
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\setcounter{secnumdepth}{4}
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\setlength{\parskip}{12pt}
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\setlength{\parindent}{0pt}
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\renewcommand{\familydefault}{\sfdefault}
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\let\oldtoc\tableofcontents
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\renewcommand{\tableofcontents} {
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\oldtoc
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\newpage
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}
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\newcommand*{\tutor}[1]{\gdef\@tutor{#1}}
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\renewcommand{\maketitle} {
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\begin{titlepage}
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\newlength{\unitlengthtmp}
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\setlength{\unitlengthtmp}{\unitlength}
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\setlength{\unitlength}{1mm}
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\setlength{\TPHorizModule}{\textwidth}
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\setlength{\TPVertModule}{\textheight}
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%
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% BFH Logo
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\includegraphics[scale=1.25]{images/logo.pdf}
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%
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% Linien
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\begin{textblock}{1}[0,0](0,0)
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\begin{picture}(0,130)
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\put(20,0){\color{bfhblue}\rule{\textwidth}{1.2mm}}
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\put(20,40){\color{bfhblue}\rule{\textwidth}{1.2mm}} %28.5
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\end{picture}
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\end{textblock}
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%
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%Zentrierte Titel
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\begin{flushleft}
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\vspace*{4.08cm}
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\textsf{\textbf{\noindent{\Huge{\textcolor{bfhblue}{\@title}}}}}\\[0.4cm]
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\textsf{\huge{\textcolor{bfhblue}{\@subtitle}}}
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%
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%Angaben zum Dokument
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\begin{vfill}
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\begin{tabularx}{\textwidth}{lX}
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\textsf{Author} & \@author\\
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\textsf{Tutor} & \@tutor\\
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% \textsf{Expert} & \textsf\DozentA\\
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% \textsf{Studiengang} & \textsf{\Studiengang}\vspace{5pt}\\
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% \textsf{Autoren} & \textsf\AutorA\\
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% & \textsf\AutorB\vspace{5pt}\\
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% \textsf{Betreuer} & \textsf\DozentA\\
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% & \textsf\DozentB\vspace{5pt}\\
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% \textsf{Experten} & \textsf\ExpertA\\
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% & \textsf\ExpertB\vspace{5pt}\\
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\textsf{Date} & \textsf{\@date}\vspace{5pt}\\
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% &\\
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% &\\
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% \multicolumn{2}{p{\columnwidth-\tabcolsep}}{\textsf{\input{titlepage/titlepage_info}}}\\
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\end{tabularx}
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\end{vfill}
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\end{flushleft}
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\setlength{\unitlength}{\unitlengthtmp}
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\end{titlepage}
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}
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\pagestyle{fancy}
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\fancyhf{}
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\fancyfoot[R]{\hrule\thepage/\pageref{LastPage}}
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\fancyfoot[L]{\hrule\today}
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\fancyhead[L]{\@title}
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\fancyhead[R]{
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\includegraphics[height=1.5\baselineskip]{images/logo.png}
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}
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\addtolength{\headheight}{2\baselineskip}
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\addtolength{\headheight}{0.61pt}
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\lstset{
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language=XML, % Code langugage
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basicstyle=\ttfamily\scriptsize,
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keywordstyle=\color{OliveGreen}, % Keywords font ('*' = uppercase)
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stringstyle=\color{blue}, % String font
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commentstyle=\color{gray}, % Comments font
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numbers=left, % Line nums position
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numberstyle=\tiny, % Line-numbers fonts
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stepnumber=1, % Step between two line-numbers
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numbersep=10pt, % How far are line-numbers from code
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backgroundcolor=\color{BackgroundBlue}, % Choose background color
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frame=none, % A frame around the code
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tabsize=4, % Default tab size
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captionpos=b, % Caption-position = bottom
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breaklines=true, % Automatic line breaking?
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breakatwhitespace=false, % Automatic breaks only at whitespace?
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%showspaces=false, % Dont make spaces visible
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%showtabs=false, % Dont make tabls visible
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columns=fixed, % Column format
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morekeywords={Server, Listener, GlobalNamingResources,
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Resource, ResourceLink, Service, Connector, Engine,
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Host, Context, Environment,
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beans, bean, broker, destinationPolicy, policyMap,
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policyEntries, policyEntry, dispatchPolicy,
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strictOrderDispatchPolicy, subscriptionRecoveryPolicy,
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lastImageSubscriptionRecoveryPolicy, managementContext,
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persistenceAdapter, systemUsage, memoryUsage,
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storeUsage, tempUsage, transportConnectors,
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transportConnector, property, jetty, connectors,
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nioConnector, handlers, webAppContext},
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}
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% Shows a listing and creates an attachment with the source
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\newcommand{\attachlisting}[2][]{
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\hspace{0.95\textwidth}
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\attachfile[icon=Paperclip]{#2}
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\vspace{-5ex}
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\lstinputlisting[#1]{#2}
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}
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% 1 line number(s)
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% 2 variable name
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% 3 description
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% 4 example values
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\newcommand{\listinginfo}[4]{
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\colorbox{WhiteSmoke}{
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\parbox[t]{0.25\textwidth}{
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\printifnotempty{#1}{\texttt{#1:}\\}
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\textit{#2}
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}
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\parbox[t]{0.715\textwidth}{
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\printifnotempty{#3}{#3
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}
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\printifnotempty{#4}{
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\par
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\vspace{1ex}
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\colorbox{BackgroundBlue}{
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\parbox{0.69\textwidth}{
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\vspace{-2ex}
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\ttfamily
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\flushleft{#4}
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}
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}
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\par
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\vspace{0.5ex}
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}
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}
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}
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\par
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\vspace{-1.7ex}
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}
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\newcommand{\printifnotempty}[2]{
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\ifthenelse{\equal{#1}{}}{}{#2}
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}
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% Makes a red box that highlights errors or very important warnings
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\newcommand{\errorbox}[1]{
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\fcolorbox{Red}{LightPink}{
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\parbox{0.972\textwidth}{
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\begin{wrapfigure}[2]{l}{0.05\textwidth}
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\vspace{-12pt}
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\includegraphics[width=0.05\textwidth]{images/error.pdf}
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\vspace{12pt}
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\end{wrapfigure}
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#1
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}
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}
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}
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% Makes a yellow box that highlights warnings
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\newcommand{\warningbox}[1]{
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\fcolorbox{Goldenrod}{LightYellow}{
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\parbox{0.972\textwidth}{
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\begin{wrapfigure}[2]{l}{0.05\textwidth}
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\vspace{-12pt}
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\includegraphics[width=0.05\textwidth]{images/warning.pdf}
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\vspace{12pt}
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\end{wrapfigure}
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#1
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}
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}
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}
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% Makes a blue box that highlights special information
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\newcommand{\infobox}[1]{
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\fcolorbox{CornflowerBlue}{AliceBlue}{
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\parbox{0.972\textwidth}{
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\begin{wrapfigure}[2]{l}{0.05\textwidth}
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\vspace{-12pt}
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\includegraphics[width=0.05\textwidth]{images/info.pdf}
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\end{wrapfigure}
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#1
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}
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}
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}
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\usepackage{listings}
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\definecolor{BackgroundBlue}{cmyk}{0.05,0,0,0}
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\let\olditemize=\itemize
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\def\itemize{
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\olditemize
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\setlength{\itemsep}{-1.5ex}
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}
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\newcommand{\leadingzero}[1]{\ifnum #1<10 0\the#1\else\the#1\fi}
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%YYYY-MM-DD
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\newcommand{\todayI}{\the\year-\leadingzero{\month}-\leadingzero{\day}}
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\endinput
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8
docs/bibliography.bib
Normal file
8
docs/bibliography.bib
Normal file
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@ONLINE{wiki:protocol,
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url = {https://bitmessage.org/wiki/Protocol_specification},
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title = {Bitmessage Wiki: Protocol Specification},
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publisher = {Bitmessage Wiki},
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urldate = {2015-04-24},
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author = {Atheros and Coe, Jonathan},
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year = {2015},
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}
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123
docs/images/logo-de.svg
Normal file
123
docs/images/logo-de.svg
Normal file
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<svg
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xmlns:dc="http://purl.org/dc/elements/1.1/"
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xmlns:cc="http://creativecommons.org/ns#"
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xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
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xmlns:svg="http://www.w3.org/2000/svg"
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xmlns="http://www.w3.org/2000/svg"
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xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
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xml:space="preserve"
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sodipodi:docname="logo.pdf"><metadata
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rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
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inkscape:window-width="640"
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inkscape:groupmode="layer"
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docs/images/logo.pdf
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@ -3,20 +3,17 @@
|
||||
\title{Project 2}
|
||||
\subtitle{Bitmessage -- Communication Without Metadata}
|
||||
\author{Christian Basler}
|
||||
\tutor{Kai Brünnler}
|
||||
\date{\today}
|
||||
|
||||
\begin{document}
|
||||
\maketitle
|
||||
|
||||
\begin{figure}[h]
|
||||
\includegraphics[width=0.2\textwidth]{logo.png}
|
||||
\centering
|
||||
\end{figure}
|
||||
|
||||
\tableofcontents
|
||||
|
||||
\section{Synopsis}
|
||||
|
||||
TODO
|
||||
|
||||
|
||||
% Section basics
|
||||
@ -32,6 +29,13 @@
|
||||
|
||||
\section{Issues}
|
||||
|
||||
TODO
|
||||
|
||||
|
||||
\subsection{Unsigned Numbers}
|
||||
|
||||
Java doesn't support unsigned number types. While Java 8 has some helper classes to address this issue, my goal is to support Java 7, which is needed for Android development, so I wasn't able to leverage them.
|
||||
|
||||
\subsection{Proof of Work}
|
||||
|
||||
Proof of work is needed for a message to be distributed within the Bitmessage network. This is to protect both the network itself from denial of service attacks and the users from spam.
|
||||
@ -51,6 +55,11 @@
|
||||
\subsection{Network Management}
|
||||
|
||||
|
||||
\section{Usage}
|
||||
|
||||
TODO
|
||||
|
||||
|
||||
\section{Discussion}
|
||||
|
||||
|
||||
|
||||
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docs/seminar.tex
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docs/seminar.tex
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@ -0,0 +1,103 @@
|
||||
\documentclass{bfh}
|
||||
|
||||
\usepackage[numbers]{natbib}
|
||||
|
||||
\title{Informatikseminar}
|
||||
\subtitle{Bitmessage -- Communication Without Metadata}
|
||||
\author{Christian Basler}
|
||||
\tutor{Kai Brünnler}
|
||||
\date{\today}
|
||||
|
||||
\newcommand{\msg}[1]{\textit{#1}}
|
||||
\newcommand{\obj}[1]{\textbf{#1}}
|
||||
\newcommand{\node}[1]{\textbf{#1}}
|
||||
|
||||
\begin{document}
|
||||
\maketitle
|
||||
|
||||
\tableofcontents
|
||||
|
||||
\section{Synopsis}
|
||||
|
||||
TODO
|
||||
|
||||
|
||||
% Section basics
|
||||
\input{basics}
|
||||
|
||||
|
||||
\section{Protocol}
|
||||
|
||||
\subsection{Nomenclature}
|
||||
|
||||
There are a few terms that are easily mixed up. Here's a list of the most confusing ones:
|
||||
|
||||
\listinginfo{}{message}{is sent from one node to another, i.e. to announce new objects or to initialize the network connection.}{}
|
||||
\listinginfo{}{msg}{is the object payload containing the actual message written by a user. The term 'message' is never used to describe information exchange between users in this document.}{}
|
||||
\listinginfo{}{payload}{There are two kinds of payload: message payload for message types, e.g. containing inventory vectors, and object payload, which is distributed throughout the network.}{}
|
||||
\listinginfo{}{object}{is a kind of message whose payload is distributed among all nodes. Somtimes just the payload is meant.}{}
|
||||
|
||||
\subsection{Process Flow}
|
||||
|
||||
The newly started node \node{A} connects to a random node \node{B} from its node registry and sends a \msg{version} message, announcing the latest supported protocol version. If \node{B} accepts the version\footnote{A version is accepted by default if it is higher or equal to a nodes latest supported version. Nodes supporting experimental protocol versions might accept older versions.}, it responds with a \msg{verack} message, followed by a \msg{version} message announcing its own latest supported protocol version. Node \node{A} then decides whether it supports \node{B}'s version and sends its \msg{verack} mesage.
|
||||
|
||||
If both nodes accept the connection, they both send an \msg{addr} message containing up to 1000 of its known nodes, followed by one or more \msg{inv} messages announcing all valid objects they are aware of. They then send \msg{getobject} request for all objects still missing from their inventory.
|
||||
|
||||
\msg{Getobject} requests are answered by \msg{object} messages containing the requested objects.
|
||||
|
||||
If a user writes a new mail on node \node{A}, it is offered via \msg{inv} to up to eight connected nodes. They will get the object and distribute it to up to eight of their connections, and so on.
|
||||
|
||||
\subsection{Messages}
|
||||
|
||||
The messages and binary format are very well discribed in the Bitmessage wiki \cite{wiki:protocol}, the message description is therefore narrowed down to a description of what they do and when they're used.
|
||||
|
||||
\subsubsection{version / verack}
|
||||
A \msg{version} message contains the latest protocol version supported by a node, as well as the streams it is interested in and which features it supports. If the other node accepts, it acknowledges with a \msg{verack} message. The connection is initialized when both nodes sent a \msg{verack} message.
|
||||
|
||||
\subsubsection{addr}
|
||||
Contains up to 1000 known nodes with their IP addresses, ports, streams and supported features.
|
||||
|
||||
\subsubsection{inv}
|
||||
One \msg{inv} message contains the hashes of up to 50000 valid objects. If your inventory is larger, several messages can be sent.
|
||||
|
||||
\subsubsection{getdata}
|
||||
Can request up to 50000 objects by sending their hashes.
|
||||
|
||||
\subsubsection{object}
|
||||
Contains one requested object, which might be one of:
|
||||
|
||||
\listinginfo{}{getpubkey}{A request for a public key, which is needed to encrypt a message to a specific user.}{}
|
||||
\listinginfo{}{pubkey}{A public key. See \ref{subsec:addrenc} \nameref{subsec:addrenc}}{}
|
||||
\listinginfo{}{msg}{}{}
|
||||
\listinginfo{}{broadcast}{}{}
|
||||
|
||||
\subsubsection{ping / pong}
|
||||
|
||||
\subsection{Addresses and Encryption}
|
||||
\label{subsec:addrenc}
|
||||
|
||||
|
||||
\section{Issues}
|
||||
|
||||
\subsection{Scalability}
|
||||
|
||||
TODO
|
||||
|
||||
|
||||
\section{Discussion}
|
||||
|
||||
TODO
|
||||
|
||||
|
||||
\bibliographystyle{plain}
|
||||
\bibliography{bibliography}
|
||||
|
||||
\appendix
|
||||
\addcontentsline{toc}{section}{Appendix}
|
||||
\section*{Appendix}
|
||||
\renewcommand{\thesubsection}{\Alph{subsection}}
|
||||
|
||||
\subsection{TODO}
|
||||
|
||||
|
||||
\end{document}
|
||||
Loading…
Reference in New Issue
Block a user