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818091390d
* doc/guide.tex: Small fixes in Install. Added http_bind to Listening Ports. SVN Revision: 1102
3933 lines
152 KiB
TeX
3933 lines
152 KiB
TeX
\documentclass[a4paper,10pt]{book}
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%% Packages
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\usepackage{float}
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\usepackage{graphics}
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\usepackage{hevea}
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\usepackage[pdftex,colorlinks,unicode,urlcolor=blue,linkcolor=blue,
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pdftitle=Ejabberd\ Installation\ and\ Operation\ Guide,pdfauthor=Process-one,pdfsubject=ejabberd,pdfkeywords=ejabberd,
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pdfpagelabels=false]{hyperref}
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\usepackage{makeidx}
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%\usepackage{showidx} % Only for verifying the index entries.
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\usepackage{verbatim}
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\usepackage{geometry}
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\usepackage{fancyhdr}
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\pagestyle{fancy} %Forces the page to use the fancy template
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\renewcommand{\chaptermark}[1]{\markboth{\textbf{\thechapter}.\ \emph{#1}}{}}
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\renewcommand{\sectionmark}[1]{\markright{\thesection\ \boldmath\textbf{#1}\unboldmath}}
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\fancyhf{}
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\fancyhead[LE,RO]{\textbf{\thepage}} %Displays the page number in bold in the header,
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% to the left on even pages and to the right on odd pages.
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\fancyhead[RE]{\nouppercase{\leftmark}} %Displays the upper-level (chapter) information---
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% as determined above---in non-upper case in the header, to the right on even pages.
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\fancyhead[LO]{\rightmark} %Displays the lower-level (section) information---as
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% determined above---in the header, to the left on odd pages.
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\renewcommand{\headrulewidth}{0.5pt} %Underlines the header. (Set to 0pt if not required).
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\renewcommand{\footrulewidth}{0.5pt} %Underlines the footer. (Set to 0pt if not required).
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%% Index
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\makeindex
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% Remove the index anchors from the HTML version to save size and bandwith.
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\newcommand{\ind}[1]{\begin{latexonly}\index{#1}\end{latexonly}}
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%% Images
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\newcommand{\logoscale}{0.7}
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\newcommand{\imgscale}{0.58}
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\newcommand{\insimg}[1]{\insscaleimg{\imgscale}{#1}}
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\newcommand{\insscaleimg}[2]{
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\imgsrc{#2}{}
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\begin{latexonly}
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\scalebox{#1}{\includegraphics{#2}}
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\end{latexonly}
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}
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%% Various
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\newcommand{\bracehack}{\def\{{\char"7B}\def\}{\char"7D}}
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\newcommand{\titem}[1]{\item[\bracehack\texttt{#1}]}
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\newcommand{\ns}[1]{\texttt{#1}}
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\newcommand{\jid}[1]{\texttt{#1}}
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\newcommand{\option}[1]{\texttt{#1}}
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\newcommand{\poption}[1]{{\bracehack\texttt{#1}}}
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\newcommand{\node}[1]{\texttt{#1}}
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\newcommand{\term}[1]{\texttt{#1}}
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\newcommand{\shell}[1]{\texttt{#1}}
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\newcommand{\ejabberd}{\texttt{ejabberd}}
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\newcommand{\Jabber}{Jabber}
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%% Modules
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\newcommand{\module}[1]{\texttt{#1}}
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\newcommand{\modadhoc}{\module{mod\_adhoc}}
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\newcommand{\modannounce}{\module{mod\_announce}}
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\newcommand{\modcaps}{\module{mod\_caps}}
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\newcommand{\modconfigure}{\module{mod\_configure}}
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\newcommand{\moddisco}{\module{mod\_disco}}
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\newcommand{\modecho}{\module{mod\_echo}}
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\newcommand{\modirc}{\module{mod\_irc}}
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\newcommand{\modlast}{\module{mod\_last}}
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\newcommand{\modlastodbc}{\module{mod\_last\_odbc}}
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\newcommand{\modmuc}{\module{mod\_muc}}
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\newcommand{\modmuclog}{\module{mod\_muc\_log}}
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\newcommand{\modoffline}{\module{mod\_offline}}
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\newcommand{\modofflineodbc}{\module{mod\_offline\_odbc}}
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\newcommand{\modprivacy}{\module{mod\_privacy}}
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\newcommand{\modprivacyodbc}{\module{mod\_privacy\_odbc}}
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\newcommand{\modprivate}{\module{mod\_private}}
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\newcommand{\modprivateodbc}{\module{mod\_private\_odbc}}
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\newcommand{\modproxy}{\module{mod\_proxy65}}
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\newcommand{\modpubsub}{\module{mod\_pubsub}}
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\newcommand{\modregister}{\module{mod\_register}}
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\newcommand{\modroster}{\module{mod\_roster}}
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\newcommand{\modrosterodbc}{\module{mod\_roster\_odbc}}
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\newcommand{\modservicelog}{\module{mod\_service\_log}}
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\newcommand{\modsharedroster}{\module{mod\_shared\_roster}}
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\newcommand{\modstats}{\module{mod\_stats}}
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\newcommand{\modtime}{\module{mod\_time}}
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\newcommand{\modvcard}{\module{mod\_vcard}}
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\newcommand{\modvcardldap}{\module{mod\_vcard\_ldap}}
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\newcommand{\modvcardodbc}{\module{mod\_vcard\_odbc}}
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\newcommand{\modversion}{\module{mod\_version}}
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%% Contributed modules
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\usepackage{ifthen}
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\newboolean{modhttpbind}
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\newcommand{\modhttpbind}{\module{mod\_http\_bind}}
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\newboolean{modhttpfileserver}
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\newcommand{\modhttpfileserver}{\module{mod\_http\_fileserver}}
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\include{contributed_modules}
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%% Common options
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\newcommand{\iqdiscitem}[1]{\titem{iqdisc} \ind{options!iqdisc}This specifies
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the processing discipline for #1 IQ queries (see section~\ref{modiqdiscoption}).}
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\newcommand{\hostitem}[1]{
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\titem{host} \ind{options!host} This option defines the Jabber ID of the
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service. If the \texttt{host} option is not specified, the Jabber ID will be the
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hostname of the virtual host with the prefix `\jid{#1.}'. The keyword "@HOST@"
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is replaced at start time with the real virtual host name.
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}
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%% Title page
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\include{version}
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\newlength{\larg}
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\setlength{\larg}{14.5cm}
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\title{
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{\rule{\larg}{1mm}}\vspace{7mm}
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\begin{tabular}{r}
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{\huge {\bf ejabberd \version\ }} \\
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\\
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{\huge Installation and Operation Guide}
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\end{tabular}\\
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\vspace{2mm}
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{\rule{\larg}{1mm}}
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\vspace{2mm} \\
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\begin{tabular}{r}
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{\large \bf \today}
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\end{tabular}\\
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\vspace{5.5cm}
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}
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\author{\begin{tabular}{p{13.7cm}}
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ejabberd Development Team
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\end{tabular}}
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\date{}
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%% Options
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\newcommand{\marking}[1]{#1} % Marking disabled
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\newcommand{\quoting}[2][yozhik]{} % Quotes disabled
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%\newcommand{\new}{\marginpar{\textsc{new}}} % Highlight new features
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%\newcommand{\improved}{\marginpar{\textsc{improved}}} % Highlight improved features
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%% To by-pass errors in the HTML version.
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\newstyle{SPAN}{width:20\%; float:right; text-align:left; margin-left:auto;}
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%% Footnotes
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\begin{latexonly}
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\global\parskip=9pt plus 3pt minus 1pt
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\global\parindent=0pt
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\gdef\ahrefurl#1{\href{#1}{\texttt{#1}}}
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\gdef\footahref#1#2{#2\footnote{\href{#1}{\texttt{#1}}}}
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\end{latexonly}
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\newcommand{\txepref}[2]{\footahref{http://www.xmpp.org/extensions/xep-#1.html}{#2}}
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\newcommand{\xepref}[1]{\txepref{#1}{XEP-#1}}
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\begin{document}
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\label{titlepage}
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\begin{titlepage}
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\maketitle{}
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%% Commenting. Breaking clean layout for now:
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%% \begin{center}
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%% {\insscaleimg{\logoscale}{logo.png}
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%% \par
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%% }
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%% \end{center}
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%% \begin{quotation}\textit{I can thoroughly recommend ejabberd for ease of setup ---
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%% Kevin Smith, Current maintainer of the Psi project}\end{quotation}
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\end{titlepage}
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% Set the page counter to 2 so that the titlepage and the second page do not
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% have the same page number. This fixes the PDFLaTeX warning "destination with
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% the same identifier".
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\begin{latexonly}
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\setcounter{page}{2}
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\end{latexonly}
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\tableofcontents{}
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% Input introduction.tex
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\input{introduction}
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\chapter{Installing ejabberd}
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\section{Installing ejabberd with Binary Installer}
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Probably the easiest way to install an ejabberd Instant Messaging server
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is using the binary installer published by Process-one.
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The binary installers of released ejabberd versions
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are available in the Process-one ejabberd download page:
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\ahrefurl{http://www.process-one.net/en/ejabberd/downloads}
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The installer will deploy and configure a full featured ejabberd
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server and does not require any extra dependencies.
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In *nix systems, remember to set executable the binary installer before starting it. For example:
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\begin{verbatim}
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chmod +x ejabberd-2.0.0_1-linux-x86-installer.bin
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./ejabberd-2.0.0_1-linux-x86-installer.bin
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\end{verbatim}
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\section{Installing ejabberd with Operating System specific packages}
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Some Operating Systems provide a specific ejabberd package adapted to
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your system architecture and libraries, which also checks dependencies
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and performs basic configuration tasks like creating the initial
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administrator account. Some examples are Debian and Gentoo. Consult the
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resources provided by your Operating System for more information.
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\section{Installing ejabberd with CEAN}
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\footahref{http://cean.process-one.net/}{CEAN}
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(Comprehensive Erlang Archive Network) is a repository that hosts binary
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packages from many Erlang programs, including ejabberd and all its dependencies.
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The binaries are available for many different system architectures, so this is an
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alternative to the binary installer and Operating System's ejabberd packages.
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\section{Installing ejabberd from Source Code}
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\label{installation}
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\ind{install}
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The canonical form for distribution of ejabberd stable releases is the source code package.
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Compiling ejabberd from source code is quite easy in *nix systems,
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as long as your system have all the dependencies.
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\subsection{Requirements}
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\label{installreq}
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\ind{installation!requirements}
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To compile \ejabberd{} on a `Unix-like' operating system, you need:
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\begin{itemize}
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\item GNU Make
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\item GCC
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\item libexpat 1.95 or higher
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\item Erlang/OTP R9C-2 or higher
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\item OpenSSL 0.9.6 or higher (optional)
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\item Zlib 1.2.3 or higher (optional)
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\item GNU Iconv 1.8 or higher (optional, not needed on systems with GNU libc)
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\end{itemize}
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\subsection{Download Source Code}
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\label{download}
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\ind{install!download}
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Released versions of \ejabberd{} are available in the Process-one ejabberd download page:
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\ahrefurl{http://www.process-one.net/en/ejabberd/downloads}
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\ind{Subversion repository}
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Alternatively, the latest development version can be retrieved from the Subversion repository using this command:
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\begin{verbatim}
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svn co http://svn.process-one.net/ejabberd/trunk ejabberd
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\end{verbatim}
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\subsection{Compile}
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\label{compile}
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\ind{install!compile}
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To compile \ejabberd{} execute the commands:
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\begin{verbatim}
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./configure
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make
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\end{verbatim}
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The compilation process may report several warnings related to unusued variables.
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This is common, and is not a problem.
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The build configuration script provides several parameters.
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To get the full list run the command:
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\begin{verbatim}
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./configure --help
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\end{verbatim}
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Some options that you may be interested in modifying:
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\begin{description}
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\titem{--prefix=/}
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Specify the path prefix where the files will be copied when running the make install command.
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\titem{--enable-pam}
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Enable the PAM authentication method.
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\titem{--enable-odbc or --enable-mssql}
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Required if you want to use an external database.
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See section~\ref{database} for more information.
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\titem{--enable-full-xml}
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Enable the use of XML based optimisations.
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It will for example use CDATA to escape characters in the XMPP stream.
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Use this option only if you are sure your Jabber clients include a fully compliant XML parser.
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\titem{--disable-transient-supervisors}
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Disable the use of Erlang/OTP supervision for transient processes.
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\end{description}
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\subsection{Install}
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\label{install}
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\ind{install!install}
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To install ejabberd in the destination directories, run the command:
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\begin{verbatim}
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make install
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\end{verbatim}
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Note that you may need to have administrative privileges in the system.
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The files and directories created are, by default:
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\begin{description}
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\titem{/etc/ejabberd/} Configuration files:
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\begin{description}
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\titem{ejabberd.cfg} ejabberd configuration file
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\titem{ejabberd.inetrc} Network DNS configuration
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\titem{ejabberdctl.cfg} Configuration file of the administration script
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\end{description}
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\titem{/sbin/ejabberdctl} Administration script
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\titem{/var/lib/ejabberd/}
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\begin{description}
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\titem{.erlang.cookie} Erlang cookie file
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\titem{db} Database spool files
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\titem{ebin} Binary Erlang files (*.beam)
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\titem{priv}
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\begin{description}
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\titem{lib} Binary system libraries (*.so)
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\titem{msgs} Translated strings (*.msgs)
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\end{description}
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\end{description}
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\titem{/var/log/ejabberd/} Log files (see section~\ref{logfiles}:
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\begin{description}
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\titem{ejabberd.log} Messages reported by ejabberd code
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\titem{sasl.log} Messages reported by Erlang/OTP
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\end{description}
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\end{description}
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\subsection{Start}
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\label{start}
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\ind{install!start}
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You can use the \term{ejabberdctl} command line administration script to start and stop ejabberd.
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This script is located into tools directory of sources archive. If you installed ejabberd from sources,
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\term{ejabberdctl} is located into destination sbin directory (default /usr/local/sbin). If you installed
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ejabberd with the installer, \term{ejabberdctl} is located into ejabberd's bin directory.
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Usage example:
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\begin{verbatim}
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$ ejabberdctl start
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$ ejabberdctl status
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Node ejabberd@localhost is started. Status: started
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ejabberd is running
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$ ejabberdctl stop
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\end{verbatim}
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Please refer to the section~\ref{ejabberdctl} for details about \term{ejabberdctl},
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and configurable options to fine tune the Erlang runtime system.
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Note: if you installed ejabberd with your distribution packaging system, \term{ejabberdctl} should be called
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by an /etc/init.d/ejabberd script to allow you to start and stop ejabberd as a service at boot time.
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If you installed ejabberd using CEAN package, you will have to create your own ejabberd start
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script depending of how you handle your CEAN installation. The default \term{ejabberdctl} script is located
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into ejabberd's priv directory and can be used as an example.
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\subsection{Specific Notes for BSD}
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\label{bsd}
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\ind{install!bsd}
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The command to compile ejabberd in BSD systems is:
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\begin{verbatim}
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gmake
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\end{verbatim}
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\subsection{Specific Notes for Microsoft Windows}
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\label{windows}
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\ind{install!windows}
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\subsubsection{Requirements}
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\label{windowsreq}
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To compile \ejabberd{} on a Microsoft Windows system, you need:
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\begin{itemize}
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\item MS Visual C++ 6.0 Compiler
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\item \footahref{http://erlang.org/download.html}{Erlang/OTP R11B-5 or higher}
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\item \footahref{http://sourceforge.net/project/showfiles.php?group\_id=10127\&package\_id=11277}{Expat 2.0.0 or higher}
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\item
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\footahref{http://www.gnu.org/software/libiconv/}{GNU Iconv 1.9.2}
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(optional)
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\item \footahref{http://www.slproweb.com/products/Win32OpenSSL.html}{Shining Light OpenSSL 0.9.8d or higher}
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(to enable SSL connections)
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\item \footahref{http://www.zlib.net/}{Zlib 1.2.3 or higher}
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\end{itemize}
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\subsubsection{Compilation}
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\label{windowscom}
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We assume that we will try to put as much library as possible into \verb|C:\sdk\| to make it easier to track what is install for ejabberd.
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\begin{enumerate}
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\item Install Erlang emulator (for example, into \verb|C:\sdk\erl5.5.5|).
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\item Install Expat library into \verb|C:\sdk\Expat-2.0.0|
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directory.
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Copy file \verb|C:\sdk\Expat-2.0.0\Libs\libexpat.dll|
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to your Windows system directory (for example, \verb|C:\WINNT| or
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\verb|C:\WINNT\System32|)
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\item Build and install the Iconv library into the directory
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\verb|C:\sdk\GnuWin32|.
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Copy file \verb|C:\sdk\GnuWin32\bin\lib*.dll| to your
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Windows system directory (more installation instructions can be found in the
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file README.woe32 in the iconv distribution).
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Note: instead of copying libexpat.dll and iconv.dll to the Windows
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directory, you can add the directories
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\verb|C:\sdk\Expat-2.0.0\Libs| and
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\verb|C:\sdk\GnuWin32\bin| to the \verb|PATH| environment
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variable.
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\item Install OpenSSL in \verb|C:\sdk\OpenSSL| and add \verb|C:\sdk\OpenSSL\lib\VC| to your path or copy the binaries to your system directory.
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\item Install ZLib in \verb|C:\sdk\gnuWin32|. Copy
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\verb|C:\sdk\GnuWin32\bin\zlib1.dll| to your system directory. If you change your path it should already be set after libiconv install.
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\item Make sure the you can access Erlang binaries from your path. For example: \verb|set PATH=%PATH%;"C:\sdk\erl5.5.5\bin"|
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\item Depending on how you end up actually installing the library you might need to check and tweak the paths in the file configure.erl.
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\item While in the directory \verb|ejabberd\src| run:
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\begin{verbatim}
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configure.bat
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nmake -f Makefile.win32
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\end{verbatim}
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\item Edit the file \verb|ejabberd\src\ejabberd.cfg| and run
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\begin{verbatim}
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werl -s ejabberd -name ejabberd
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\end{verbatim}
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\end{enumerate}
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%TODO: how to compile database support on windows?
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\section{Create a Jabber Account for Administration}
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\label{initialadmin}
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You need a Jabber account and grant him administrative privileges
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to enter the ejabberd web interface:
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\begin{enumerate}
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\item Register a Jabber account on your \ejabberd{} server, for example \term{admin1@example.org}.
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There are two ways to register a Jabber account:
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\begin{enumerate}
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|
\item Using \term{ejabberdctl}\ind{ejabberdctl} (see section~\ref{ejabberdctl}):
|
|
\begin{verbatim}
|
|
% ejabberdctl register admin1 example.org FgT5bk3
|
|
\end{verbatim}
|
|
\item Using a Jabber client and In-Band Registration (see section~\ref{modregister}).
|
|
\end{enumerate}
|
|
\item Edit the ejabberd configuration file to give administration rights to the Jabber account you created:
|
|
\begin{verbatim}
|
|
{acl, admins, {user, "admin1", "example.org"}}.
|
|
{access, configure, [{allow, admins}]}.
|
|
\end{verbatim}
|
|
You can grant administrative privileges to many Jabber accounts,
|
|
and also to accounts in other Jabber servers.
|
|
\item Restart \ejabberd{} to load the new configuration.
|
|
\item Open the web interface (\verb|http://server:port/admin/|) in your
|
|
favourite browser. Make sure to enter the \emph{full} JID as username (in this
|
|
example: \jid{admin1@example.org}. The reason that you also need to enter the
|
|
suffix, is because \ejabberd{}'s virtual hosting support.
|
|
\end{enumerate}
|
|
|
|
|
|
\chapter{Configuring ejabberd}
|
|
\section{Basic Configuration}
|
|
\label{basicconfig}
|
|
\ind{configuration file}
|
|
|
|
The configuration file will be loaded the first time you start \ejabberd{}. The
|
|
content from this file will be parsed and stored in the internal ejabberd database. Subsequently the
|
|
configuration will be loaded from the database and any commands in the
|
|
configuration file are appended to the entries in the database.
|
|
|
|
Note that ejabberd never edits the configuration file.
|
|
So, the configuration changes done using the web interface
|
|
are stored in the database, but are not reflected in the configuration file.
|
|
If you want those changes to be use after ejabberd restart, you can either
|
|
edit the configuration file, or remove all its content.
|
|
|
|
The configuration file contains a sequence of Erlang terms. Lines beginning with a
|
|
\term{`\%'} sign are ignored. Each term is a tuple of which the first element is
|
|
the name of an option, and any further elements are that option's values. If the
|
|
configuration file do not contain for instance the `hosts' option, the old
|
|
host name(s) stored in the database will be used.
|
|
|
|
|
|
You can override the old values stored in the database by adding next lines to
|
|
the configuration file:
|
|
\begin{verbatim}
|
|
override_global.
|
|
override_local.
|
|
override_acls.
|
|
\end{verbatim}
|
|
With these lines the old global options (shared between all ejabberd nodes in a
|
|
cluster), local options (which are specific for this particular ejabberd node)
|
|
and ACLs will be removed before new ones are added.
|
|
|
|
\subsection{Host Names}
|
|
\label{hostnames}
|
|
\ind{options!hosts}\ind{host names}
|
|
|
|
The option \option{hosts} defines a list containing one or more domains that
|
|
\ejabberd{} will serve.
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item Serving one domain:
|
|
\begin{verbatim}
|
|
{hosts, ["example.org"]}.
|
|
\end{verbatim}
|
|
\item Serving one domain, and backwards compatible with older \ejabberd{}
|
|
versions:
|
|
\begin{verbatim}
|
|
{host, "example.org"}.
|
|
\end{verbatim}
|
|
\item Serving two domains:
|
|
\begin{verbatim}
|
|
{hosts, ["example.net", "example.com"]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{Virtual Hosting}
|
|
\label{virtualhost}
|
|
\ind{virtual hosting}\ind{virtual hosts}\ind{virtual domains}
|
|
|
|
Options can be defined separately for every virtual host using the
|
|
\term{host\_config} option.\ind{options!host\_config} It has the following
|
|
syntax:
|
|
\begin{verbatim}
|
|
{host_config, <hostname>, [<option>, <option>, ...]}.
|
|
\end{verbatim}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item Domain \jid{example.net} is using the internal authentication method while
|
|
domain \jid{example.com} is using the \ind{LDAP}LDAP server running on the
|
|
domain \jid{localhost} to perform authentication:
|
|
\begin{verbatim}
|
|
{host_config, "example.net", [{auth_method, internal}]}.
|
|
|
|
{host_config, "example.com", [{auth_method, ldap},
|
|
{ldap_servers, ["localhost"]},
|
|
{ldap_uids, [{"uid"}]},
|
|
{ldap_rootdn, "dc=localdomain"},
|
|
{ldap_rootdn, "dc=example,dc=com"},
|
|
{ldap_password, ""}]}.
|
|
\end{verbatim}
|
|
\item Domain \jid{example.net} is using \ind{ODBC}ODBC to perform authentication
|
|
while domain \jid{example.com} is using the LDAP servers running on the domains
|
|
\jid{localhost} and \jid{otherhost}:
|
|
\begin{verbatim}
|
|
{host_config, "example.net", [{auth_method, odbc},
|
|
{odbc_server, "DSN=ejabberd;UID=ejabberd;PWD=ejabberd"}]}.
|
|
|
|
{host_config, "example.com", [{auth_method, ldap},
|
|
{ldap_servers, ["localhost", "otherhost"]},
|
|
{ldap_uids, [{"uid"}]},
|
|
{ldap_rootdn, "dc=localdomain"},
|
|
{ldap_rootdn, "dc=example,dc=com"},
|
|
{ldap_password, ""}]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
If you have several virtual hosts,
|
|
and you want to define options such as \term{modules}
|
|
with values specific for some virtual host,
|
|
instead of defining each option with the syntax
|
|
\begin{verbatim}
|
|
{<option-name>, <option-value>}
|
|
\end{verbatim}
|
|
you must use this syntax:
|
|
\begin{verbatim}
|
|
{{add, <option-name>}, <option-value>}
|
|
\end{verbatim}
|
|
|
|
Example:
|
|
\begin{itemize}
|
|
\item In this example three virtual hosts have some similar modules, but there are also
|
|
other different modules for some specific virtual hosts:
|
|
\begin{verbatim}
|
|
% This ejabberd server has three vhosts:
|
|
{hosts, ["one.example.org", "two.example.org", "three.example.org"]}.
|
|
|
|
% Configuration of modules that are common to all vhosts
|
|
{modules,
|
|
[
|
|
{mod_roster, []},
|
|
{mod_configure, []},
|
|
{mod_disco, []},
|
|
{mod_private, []},
|
|
{mod_time, []},
|
|
{mod_last, []},
|
|
{mod_version, []}
|
|
]}.
|
|
|
|
% Add some modules to vhost one:
|
|
{host_config, "one.example.org", [{{add, modules}, [
|
|
{mod_echo, [{host, "echo-service.one.example.org"}]}
|
|
{mod_http_bind, []},
|
|
{mod_logxml, []}
|
|
]}]}.
|
|
|
|
% Add a module just to vhost two:
|
|
{host_config, "two.example.org", [{{add, modules}, [
|
|
{mod_echo, [{host, "mirror.two.example.org"}]}
|
|
]}]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{Listening Ports}
|
|
\label{listened}
|
|
\ind{options!listen}
|
|
|
|
The option \option{listen} defines for which addresses and ports \ejabberd{}
|
|
will listen and what services will be run on them. Each element of the list is a
|
|
tuple with the following elements:
|
|
\begin{itemize}
|
|
\item Port number.
|
|
\item Module that serves this port.
|
|
\item Options to this module.
|
|
\end{itemize}
|
|
|
|
\ind{modules!ejabberd\_c2s}\ind{modules!ejabberd\_s2s\_in}\ind{modules!ejabberd\_service}\ind{modules!ejabberd\_http}\ind{protocols!XEP-0114: Jabber Component Protocol}
|
|
The available modules, their purpose and the options allowed by each one are:
|
|
\begin{table}[H]
|
|
\centering
|
|
\def\arraystretch{1.4}
|
|
\begin{tabular}{|l|l|p{87mm}|}
|
|
\hline \texttt{ejabberd\_c2s}& Description& Handles c2s connections.\\
|
|
\cline{2-3} & Options& \texttt{access}, \texttt{certfile}, \texttt{inet6},
|
|
\texttt{ip}, \texttt{max\_stanza\_size}, \texttt{shaper},
|
|
\texttt{starttls}, \texttt{starttls\_required}, \texttt{tls},
|
|
\texttt{zlib}\\
|
|
\hline \texttt{ejabberd\_s2s\_in}& Description& Handles incoming s2s
|
|
connections.\\
|
|
\cline{2-3} & Options& \texttt{inet6}, \texttt{ip},
|
|
\texttt{max\_stanza\_size}\\
|
|
\hline \texttt{ejabberd\_service}& Description& Interacts with
|
|
\footahref{http://www.ejabberd.im/tutorials-transports}{external components}
|
|
(as defined in the Jabber Component Protocol (\xepref{0114}).\\
|
|
\cline{2-3} & Options& \texttt{access}, \texttt{hosts}, \texttt{inet6},
|
|
\texttt{ip}, \texttt{shaper}\\
|
|
\hline \texttt{ejabberd\_http}& Description& Handles incoming HTTP
|
|
connections.\\
|
|
\cline{2-3} & Options& \texttt{certfile}, \texttt{http\_bind}, \texttt{http\_poll},
|
|
\texttt{inet6}, \texttt{ip}, \texttt{request\_handlers}, \texttt{tls}, \texttt{web\_admin}\\
|
|
\hline
|
|
\end{tabular}
|
|
\end{table}
|
|
|
|
This is a detailed description of each option allowed by the listening modules:
|
|
\begin{description}
|
|
\titem{\{access, <access rule>\}} \ind{options!access}This option defines
|
|
access to the port. The default value is \term{all}.
|
|
\titem{\{certfile, Path\}} Full path to a file containing the default SSL certificate.
|
|
To define a certificate file specific for a given domain, use the global option \term{domain\_certfile}.
|
|
\titem{component\_check\_from} \ind{options!service\_check\_from}
|
|
This option can be used with \term{ejabberd\_service} only. It is
|
|
used to disable control on the from field on packets send by an
|
|
external components. The option can be either \term{true} or
|
|
\term{false}. The default value is \term{true} which conforms to \xepref{0114}.
|
|
\titem{\{hosts, [Hostnames], [HostOptions]\}} \ind{options!hosts}This option
|
|
defines one or more hostnames of connected services and enables you to
|
|
specify additional options including \poption{\{password, Secret\}}.
|
|
\titem{http\_bind} \ind{options!http\_bind}\ind{protocols!XEP-0206: HTTP Binding}\ind{JWChat}\ind{web-based Jabber client}
|
|
This option enables HTTP Binding (\xepref{0124} and \xepref{0206}) support. HTTP Bind
|
|
enables access via HTTP requests to \ejabberd{} from behind firewalls which
|
|
do not allow outgoing sockets on port 5222.
|
|
|
|
Remember that you must also install and enable the module mod\_http\_bind.
|
|
|
|
If HTTP Bind is enabled, it will be available at
|
|
\verb|http://server:port/http-bind/|. Be aware that support for HTTP Bind
|
|
is also needed in the \Jabber{} client. Remark also that HTTP Bind can be
|
|
interesting to host a web-based \Jabber{} client such as
|
|
\footahref{http://jwchat.sourceforge.net/}{JWChat} (there is a tutorial to
|
|
\footahref{http://www.ejabberd.im/jwchat}{install JWChat} with
|
|
instructions for \ejabberd{}).
|
|
\titem{http\_poll} \ind{options!http\_poll}\ind{protocols!XEP-0025: HTTP Polling}\ind{JWChat}\ind{web-based Jabber client}
|
|
This option enables HTTP Polling (\xepref{0025}) support. HTTP Polling
|
|
enables access via HTTP requests to \ejabberd{} from behind firewalls which
|
|
do not allow outgoing sockets on port 5222.
|
|
|
|
If HTTP Polling is enabled, it will be available at
|
|
\verb|http://server:port/http-poll/|. Be aware that support for HTTP Polling
|
|
is also needed in the \Jabber{} client. Remark also that HTTP Polling can be
|
|
interesting to host a web-based \Jabber{} client such as
|
|
\footahref{http://jwchat.sourceforge.net/}{JWChat} (there is a tutorial to
|
|
\footahref{http://www.ejabberd.im/jwchat}{install JWChat} with
|
|
instructions for \ejabberd{}).
|
|
\titem{inet6} \ind{options!inet6}\ind{IPv6}Set up the socket for IPv6.
|
|
\titem{\{ip, IPAddress\}} \ind{options!ip}This option specifies which network
|
|
interface to listen for. For example \verb|{ip, {192, 168, 1, 1}}|.
|
|
\titem{\{max\_stanza\_size, Size\}}
|
|
\ind{options!max\_stanza\_size}This option specifies an
|
|
approximate maximum size in bytes of XML stanzas. Approximate,
|
|
because it is calculated with the precision of one block of readed
|
|
data. For example \verb|{max_stanza_size, 65536}|. The default
|
|
value is \term{infinity}. Recommended values are 65536 for c2s
|
|
connections and 131072 for s2s connections. s2s max stanza size
|
|
must always much higher than c2s limit. Change this value with
|
|
extreme care as it can cause unwanted disconnect if set too low.
|
|
\titem{\{request\_handlers, [\{Path, Module\}]\}} To define one or several handlers that will serve HTTP requests.
|
|
The Path is a list of strings; so the URIs that start with that Path will be served by Module.
|
|
For example, if you want \term{mod\_foo} to serve the URIs that start with \term{/a/b/},
|
|
and you also want \term{mod\_http\_bind} to serve the URIs \term{/http-bind/},
|
|
use this option: \term{\{request\_handlers, [\{["a", "b"], mod\_foo\}, \{["http-bind"], mod\_http\_bind\}]\}}
|
|
\titem{\{shaper, <access rule>\}} \ind{options!shaper}This option defines a
|
|
shaper for the port (see section~\ref{shapers}). The default value
|
|
is \term{none}.
|
|
\titem{starttls} \ind{options!starttls}\ind{STARTTLS}This option
|
|
specifies that STARTTLS encryption is available on connections to the port.
|
|
You should also set the \option{certfile} option.
|
|
You can define a certificate file for a specific domain using the global option \option{domain\_certfile}.
|
|
\titem{starttls\_required} \ind{options!starttls\_required}This option
|
|
specifies that STARTTLS encryption is required on connections to the port.
|
|
No unencrypted connections will be allowed.
|
|
You should also set the \option{certfile} option.
|
|
You can define a certificate file for a specific domain using the global option \option{domain\_certfile}.
|
|
\titem{tls} \ind{options!tls}\ind{TLS}This option specifies that traffic on
|
|
the port will be encrypted using SSL immediately after connecting. You
|
|
should also set the \option{certfile} option.
|
|
\titem{web\_admin} \ind{options!web\_admin}\ind{web interface}This option
|
|
enables the web interface for \ejabberd{} administration which is available
|
|
at \verb|http://server:port/admin/|. Login and password are the username and
|
|
password of one of the registered users who are granted access by the
|
|
`configure' access rule.
|
|
\titem{zlib} \ind{options!zlib}\ind{protocols!XEP-0138: Stream Compression}\ind{Zlib}This
|
|
option specifies that Zlib stream compression (as defined in \xepref{0138})
|
|
is available on connections to the port. Client connections cannot use
|
|
stream compression and stream encryption simultaneously. Hence, if you
|
|
specify both \option{tls} (or \option{ssl}) and \option{zlib}, the latter
|
|
option will not affect connections (there will be no stream compression).
|
|
\end{description}
|
|
|
|
There are some additional global options:
|
|
\begin{description}
|
|
\titem{\{s2s\_use\_starttls, true|false\}}
|
|
\ind{options!s2s\_use\_starttls}\ind{STARTTLS}This option defines whether to
|
|
use STARTTLS for s2s connections.
|
|
\titem{\{s2s\_certfile, Path\}} \ind{options!s2s\_certificate}Full path to a
|
|
file containing a SSL certificate.
|
|
\titem{\{domain\_certfile, Domain, Path\}} \ind{options!domain\_certfile}
|
|
Full path to the file containing the SSL certificate for a specific domain.
|
|
\end{description}
|
|
|
|
For example, the following simple configuration defines:
|
|
\begin{itemize}
|
|
\item There are three domains. The default certificate file is \term{server.pem}.
|
|
However, the c2s and s2s connections to the domain \term{example.com} use the file \term{example\_com.pem}.
|
|
\item Port 5222 listens for c2s connections with STARTTLS,
|
|
and also allows plain connections for old clients.
|
|
\item Port 5223 listens for c2s connections with the old SSL.
|
|
\item Port 5269 listens for s2s connections with STARTTLS.
|
|
\item Port 5280 listens for HTTP requests, and serves the HTTP Poll service.
|
|
\item Port 5281 listens for HTTP requests, and serves the web interface using HTTPS as explained in
|
|
section~\ref{webinterface}.
|
|
\end{itemize}
|
|
\begin{verbatim}
|
|
{hosts, ["example.com", "example.org", "example.net"]}.
|
|
{listen,
|
|
[
|
|
{5222, ejabberd_c2s, [
|
|
{access, c2s},
|
|
{shaper, c2s_shaper},
|
|
starttls, {certfile, "/etc/ejabberd/server.pem"},
|
|
{max_stanza_size, 65536}
|
|
]},
|
|
{5223, ejabberd_c2s, [
|
|
{access, c2s},
|
|
{shaper, c2s_shaper},
|
|
tls, {certfile, "/etc/ejabberd/server.pem"},
|
|
{max_stanza_size, 65536}
|
|
]},
|
|
{5269, ejabberd_s2s_in, [
|
|
{shaper, s2s_shaper},
|
|
{max_stanza_size, 131072}
|
|
]},
|
|
{5280, ejabberd_http, [
|
|
http_poll
|
|
]},
|
|
{5281, ejabberd_http, [
|
|
web_admin,
|
|
tls, {certfile, "/etc/ejabberd/server.pem"},
|
|
]}
|
|
]
|
|
}.
|
|
{s2s_use_starttls, true}.
|
|
{s2s_certfile, "/etc/ejabberd/server.pem"}.
|
|
{domain_certfile, "example.com", "/etc/ejabberd/example_com.pem"}.
|
|
\end{verbatim}
|
|
|
|
In this example, the following configuration defines that:
|
|
\begin{itemize}
|
|
\item c2s connections are listened for on port 5222 and 5223 (SSL) and denied
|
|
for the user called `\term{bad}'.
|
|
\item s2s connections are listened for on port 5269 with STARTTLS for secured
|
|
traffic enabled.
|
|
\item Port 5280 is serving the web interface and the HTTP Polling service. Note
|
|
that it is also possible to serve them on different ports. The second
|
|
example in section~\ref{webinterface} shows how exactly this can be done.
|
|
\item All users except for the administrators have a traffic of limit
|
|
1,000\,Bytes/second
|
|
\item \ind{transports!AIM}The
|
|
\footahref{http://www.ejabberd.im/pyaimt}{AIM transport}
|
|
\jid{aim.example.org} is connected to port 5233 with password
|
|
`\term{aimsecret}'.
|
|
\item \ind{transports!ICQ}The ICQ transport JIT (\jid{icq.example.org} and
|
|
\jid{sms.example.org}) is connected to port 5234 with password
|
|
`\term{jitsecret}'.
|
|
\item \ind{transports!MSN}The
|
|
\footahref{http://www.ejabberd.im/pymsnt}{MSN transport}
|
|
\jid{msn.example.org} is connected to port 5235 with password
|
|
`\term{msnsecret}'.
|
|
\item \ind{transports!Yahoo}The
|
|
\footahref{http://www.ejabberd.im/yahoo-transport-2}{Yahoo! transport}
|
|
\jid{yahoo.example.org} is connected to port 5236 with password
|
|
`\term{yahoosecret}'.
|
|
\item \ind{transports!Gadu-Gadu}The \footahref{http://www.ejabberd.im/jabber-gg-transport}{Gadu-Gadu transport} \jid{gg.example.org} is
|
|
connected to port 5237 with password `\term{ggsecret}'.
|
|
\item \ind{transports!email notifier}The
|
|
\footahref{http://www.ejabberd.im/jmc}{Jabber Mail Component}
|
|
\jid{jmc.example.org} is connected to port 5238 with password
|
|
`\term{jmcsecret}'.
|
|
\item The service custom has enabled the special option to avoiding checking the \term{from} attribute in the packets send by this component. The component can send packets in behalf of any users from the server, or even on behalf of any server.
|
|
\end{itemize}
|
|
\begin{verbatim}
|
|
{acl, blocked, {user, "bad"}}.
|
|
{access, c2s, [{deny, blocked},
|
|
{allow, all}]}.
|
|
{shaper, normal, {maxrate, 1000}}.
|
|
{access, c2s_shaper, [{none, admin},
|
|
{normal, all}]}.
|
|
{listen,
|
|
[{5222, ejabberd_c2s, [{access, c2s}, {shaper, c2s_shaper}]},
|
|
{5223, ejabberd_c2s, [{access, c2s},
|
|
ssl, {certfile, "/path/to/ssl.pem"}]},
|
|
{5269, ejabberd_s2s_in, []},
|
|
{5280, ejabberd_http, [http_poll, web_admin]},
|
|
{5233, ejabberd_service, [{host, "aim.example.org",
|
|
[{password, "aimsecret"}]}]},
|
|
{5234, ejabberd_service, [{hosts, ["icq.example.org", "sms.example.org"],
|
|
[{password, "jitsecret"}]}]},
|
|
{5235, ejabberd_service, [{host, "msn.example.org",
|
|
[{password, "msnsecret"}]}]},
|
|
{5236, ejabberd_service, [{host, "yahoo.example.org",
|
|
[{password, "yahoosecret"}]}]},
|
|
{5237, ejabberd_service, [{host, "gg.example.org",
|
|
[{password, "ggsecret"}]}]},
|
|
{5238, ejabberd_service, [{host, "jmc.example.org",
|
|
[{password, "jmcsecret"}]}]},
|
|
{5239, ejabberd_service, [{host, "custom.example.org",
|
|
[{password, "customsecret"}]},
|
|
{service_check_from, false}]}
|
|
]
|
|
}.
|
|
{s2s_use_starttls, true}.
|
|
{s2s_certfile, "/path/to/ssl.pem"}.
|
|
\end{verbatim}
|
|
Note, that for \ind{jabberd 1.4}jabberd 1.4- or \ind{WPJabber}WPJabber-based
|
|
services you have to make the transports log and do \ind{XDB}XDB by themselves:
|
|
\begin{verbatim}
|
|
<!--
|
|
You have to add elogger and rlogger entries here when using ejabberd.
|
|
In this case the transport will do the logging.
|
|
-->
|
|
|
|
<log id='logger'>
|
|
<host/>
|
|
<logtype/>
|
|
<format>%d: [%t] (%h): %s</format>
|
|
<file>/var/log/jabber/service.log</file>
|
|
</log>
|
|
|
|
<!--
|
|
Some Jabber server implementations do not provide
|
|
XDB services (for example, jabberd2 and ejabberd).
|
|
xdb_file.so is loaded in to handle all XDB requests.
|
|
-->
|
|
|
|
<xdb id="xdb">
|
|
<host/>
|
|
<load>
|
|
<!-- this is a lib of wpjabber or jabberd -->
|
|
<xdb_file>/usr/lib/jabber/xdb_file.so</xdb_file>
|
|
</load>
|
|
<xdb_file xmlns="jabber:config:xdb_file">
|
|
<spool><jabberd:cmdline flag='s'>/var/spool/jabber</jabberd:cmdline></spool>
|
|
</xdb_file>
|
|
</xdb>
|
|
\end{verbatim}
|
|
|
|
\subsection{Authentication}
|
|
\label{auth}
|
|
\ind{authentication}\ind{options!auth\_method}
|
|
|
|
The option \option{auth\_method} defines the authentication method that is used
|
|
for user authentication:
|
|
\begin{verbatim}
|
|
{auth_method, [<method>]}.
|
|
\end{verbatim}
|
|
|
|
The following authentication methods are supported by \ejabberd{}:
|
|
\begin{itemize}
|
|
\item internal (default) --- See section~\ref{internalauth}.
|
|
\item external --- There are \footahref{http://www.ejabberd.im/extauth}{some
|
|
example authentication scripts}.
|
|
\item ldap --- See section~\ref{ldap}.
|
|
\item odbc --- See section~\ref{mysql}, \ref{pgsql},
|
|
\ref{mssql} and \ref{odbc}.
|
|
\item anonymous --- See section~\ref{saslanonymous}.
|
|
\item pam --- See section~\ref{pam}.
|
|
\end{itemize}
|
|
|
|
\subsubsection{Internal}
|
|
\label{internalauth}
|
|
\ind{internal authentication}\ind{Mnesia}
|
|
|
|
\ejabberd{} uses its internal Mnesia database as the default authentication method.
|
|
|
|
\begin{itemize}
|
|
\item \term{auth\_method}: The value \term{internal} will enable the internal
|
|
authentication method.
|
|
\end{itemize}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item To use internal authentication on \jid{example.org} and LDAP
|
|
authentication on \jid{example.net}:
|
|
\begin{verbatim}
|
|
{host_config, "example.org", [{auth_method, [internal]}]}.
|
|
{host_config, "example.net", [{auth_method, [ldap]}]}.
|
|
\end{verbatim}
|
|
\item To use internal authentication on all virtual hosts:
|
|
\begin{verbatim}
|
|
{auth_method, internal}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsubsection{SASL Anonymous and Anonymous Login}
|
|
\label{saslanonymous}
|
|
\ind{sasl anonymous}\ind{anonymous login}
|
|
|
|
%TODO: introduction; tell what people can do with this
|
|
The anonymous authentication method can be configured with the following
|
|
options. Remember that you can use the \term{host\_config} option to set virtual
|
|
host specific options (see section~\ref{virtualhost}). Note that there also
|
|
is a detailed tutorial regarding \footahref{http://support.process-one.net/doc/display/MESSENGER/Anonymous+users+support}{SASL
|
|
Anonymous and anonymous login configuration}.
|
|
|
|
\begin{itemize}
|
|
\item \term{auth\_method}: The value \term{anonymous} will enable the anonymous
|
|
authentication method.
|
|
\item \term{allow\_multiple\_connections}: This value for this option can be
|
|
either \term{true} or \term{false} and is only used when the anonymous mode is
|
|
enabled. Setting it to \term{true} means that the same username can be taken
|
|
multiple times in anonymous login mode if different resource are used to
|
|
connect. This option is only useful in very special occasions. The default
|
|
value is \term{false}.
|
|
\item \term{anonymous\_protocol}: This option can take three values:
|
|
\term{sasl\_anon}, \term{login\_anon} or \term{both}. \term{sasl\_anon} means
|
|
that the SASL Anonymous method will be used. \term{login\_anon} means that the
|
|
anonymous login method will be used. \term{both} means that SASL Anonymous and
|
|
login anonymous are both enabled.
|
|
\end{itemize}
|
|
|
|
Those options are defined for each virtual host with the \term{host\_config}
|
|
parameter (see section~\ref{virtualhost}).
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item To enable anonymous login on all virtual hosts:
|
|
\begin{verbatim}
|
|
{auth_method, [anonymous]}.
|
|
{anonymous_protocol, login_anon}.
|
|
\end{verbatim}
|
|
\item Similar as previous example, but limited to \jid{public.example.org}:
|
|
\begin{verbatim}
|
|
{host_config, "public.example.org", [{auth_method, [anonymous]},
|
|
{anonymous_protocol, login_anon}]}.
|
|
\end{verbatim}
|
|
\item To enable anonymous login and internal authentication on a virtual host:
|
|
\begin{verbatim}
|
|
{host_config, "public.example.org", [{auth_method, [internal,anonymous]},
|
|
{anonymous_protocol, login_anon}]}.
|
|
\end{verbatim}
|
|
\item To enable SASL Anonymous on a virtual host:
|
|
\begin{verbatim}
|
|
{host_config, "public.example.org", [{auth_method, [anonymous]},
|
|
{anonymous_protocol, sasl_anon}]}.
|
|
\end{verbatim}
|
|
\item To enable SASL Anonymous and anonymous login on a virtual host:
|
|
\begin{verbatim}
|
|
{host_config, "public.example.org", [{auth_method, [anonymous]},
|
|
{anonymous_protocol, both}]}.
|
|
\end{verbatim}
|
|
\item To enable SASL Anonymous, anonymous login, and internal authentication on
|
|
a virtual host:
|
|
\begin{verbatim}
|
|
{host_config, "public.example.org", [{auth_method, [internal,anonymous]},
|
|
{anonymous_protocol, both}]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsubsection{PAM Authentication}
|
|
\label{pam}
|
|
\ind{PAM authentication}\ind{Pluggable Authentication Modules}
|
|
|
|
\ejabberd{} supports authentication via Pluggable Authentication Modules (PAM).
|
|
PAM is currently supported in AIX, FreeBSD, HP-UX, Linux, Mac OS X, NetBSD and Solaris.
|
|
PAM authentication is disabled by default, so you have to configure and compile
|
|
\ejabberd{} with PAM support enabled:
|
|
\begin{verbatim}
|
|
./configure --enable-pam && make install
|
|
\end{verbatim}
|
|
|
|
Options:
|
|
\begin{description}
|
|
\titem{pam\_service}\ind{options!pam\_service}This option defines the PAM service name.
|
|
Default is \term{"ejabberd"}. Refer to the PAM documentation of your operation system
|
|
for more information.
|
|
\end{description}
|
|
|
|
Example:
|
|
\begin{verbatim}
|
|
{auth_method, [pam]}.
|
|
{pam_service, "ejabberd"}.
|
|
\end{verbatim}
|
|
|
|
Though it is quite easy to set up PAM support in \ejabberd{}, PAM itself introduces some
|
|
security issues:
|
|
|
|
\begin{itemize}
|
|
\item To perform PAM authentication \ejabberd{} uses external C-program called
|
|
\term{epam}. By default, it is located in \verb|/var/lib/ejabberd/priv/lib/|
|
|
directory. You have to set it root on execution in the case when your PAM module
|
|
requires root privileges (\term{pam\_unix.so} for example). Also you have to grant access
|
|
for \ejabberd{} to this file and remove all other permissions from it:
|
|
\begin{verbatim}
|
|
# chown root:ejabberd /var/lib/ejabberd/priv/lib/epam
|
|
# chmod 4750 /var/lib/ejabberd/priv/lib/epam
|
|
\end{verbatim}
|
|
\item Make sure you have the latest version of PAM installed on your system.
|
|
Some old versions of PAM modules cause memory leaks. If you are not able to use the latest
|
|
version, you can \term{kill(1)} \term{epam} process periodically to reduce its memory
|
|
consumption: \ejabberd{} will restart this process immediately.
|
|
\item \term{epam} program tries to turn off delays on authentication failures.
|
|
However, some PAM modules ignore this behavior and rely on their own configuration options.
|
|
The example configuration file \term{ejabberd.pam} shows how to turn off delays in
|
|
\term{pam\_unix.so} module. It is not a ready to use configuration file: you must use it
|
|
as a hint when building your own PAM configuration instead. Note that if you want to disable
|
|
delays on authentication failures in the PAM configuration file, you have to restrict access
|
|
to this file, so a malicious user can't use your configuration to perform brute-force
|
|
attacks.
|
|
\item You may want to allow login access only for certain users. \term{pam\_listfile.so}
|
|
module provides such functionality.
|
|
\end{itemize}
|
|
|
|
\subsection{Access Rules}
|
|
\label{accessrules}
|
|
\ind{access rules}\ind{ACL}\ind{Access Control List}
|
|
|
|
\subsubsection{ACL Definition}
|
|
\label{ACLDefinition}
|
|
\ind{ACL}\ind{options!acl}\ind{ACL}\ind{Access Control List}
|
|
|
|
Access control in \ejabberd{} is performed via Access Control Lists (ACLs). The
|
|
declarations of ACLs in the configuration file have the following syntax:
|
|
\begin{verbatim}
|
|
{acl, <aclname>, {<acltype>, ...}}.
|
|
\end{verbatim}
|
|
\term{<acltype>} can be one of the following:
|
|
\begin{description}
|
|
\titem{all} Matches all JIDs. Example:
|
|
\begin{verbatim}
|
|
{acl, all, all}.
|
|
\end{verbatim}
|
|
\titem{\{user, <username>\}} Matches the user with the name
|
|
\term{<username>} at the first virtual host. Example:
|
|
\begin{verbatim}
|
|
{acl, admin, {user, "yozhik"}}.
|
|
\end{verbatim}
|
|
\titem{\{user, <username>, <server>\}} Matches the user with the JID
|
|
\term{<username>@<server>} and any resource. Example:
|
|
\begin{verbatim}
|
|
{acl, admin, {user, "yozhik", "example.org"}}.
|
|
\end{verbatim}
|
|
\titem{\{server, <server>\}} Matches any JID from server
|
|
\term{<server>}. Example:
|
|
\begin{verbatim}
|
|
{acl, exampleorg, {server, "example.org"}}.
|
|
\end{verbatim}
|
|
\titem{\{user\_regexp, <regexp>\}} Matches any local user with a name that
|
|
matches \term{<regexp>} on local virtual hosts. Example:
|
|
\begin{verbatim}
|
|
{acl, tests, {user_regexp, "^test[0-9]*$"}}.
|
|
\end{verbatim}
|
|
%$
|
|
\titem{\{user\_regexp, <regexp>, <server>\}} Matches any user with a name
|
|
that matches \term{<regexp>} at server \term{<server>}. Example:
|
|
\begin{verbatim}
|
|
{acl, tests, {user_regexp, "^test", "example.org"}}.
|
|
\end{verbatim}
|
|
\titem{\{server\_regexp, <regexp>\}} Matches any JID from the server that
|
|
matches \term{<regexp>}. Example:
|
|
\begin{verbatim}
|
|
{acl, icq, {server_regexp, "^icq\\."}}.
|
|
\end{verbatim}
|
|
\titem{\{node\_regexp, <user\_regexp>, <server\_regexp>\}} Matches any user
|
|
with a name that matches \term{<user\_regexp>} at any server that matches
|
|
\term{<server\_regexp>}. Example:
|
|
\begin{verbatim}
|
|
{acl, yohzik, {node_regexp, "^yohzik$", "^example.(com|org)$"}}.
|
|
\end{verbatim}
|
|
\titem{\{user\_glob, <glob>\}}
|
|
\titem{\{user\_glob, <glob>, <server>\}}
|
|
\titem{\{server\_glob, <glob>\}}
|
|
\titem{\{node\_glob, <user\_glob>, <server\_glob>\}} This is the same as
|
|
above. However, it uses shell glob patterns instead of regexp. These patterns
|
|
can have the following special characters:
|
|
\begin{description}
|
|
\titem{*} matches any string including the null string.
|
|
\titem{?} matches any single character.
|
|
\titem{[...]} matches any of the enclosed characters. Character
|
|
ranges are specified by a pair of characters separated by a \term{`-'}.
|
|
If the first character after \term{`['} is a \term{`!'}, any
|
|
character not enclosed is matched.
|
|
\end{description}
|
|
\end{description}
|
|
|
|
The following ACLs are pre-defined:
|
|
\begin{description}
|
|
\titem{all} Matches any JID.
|
|
\titem{none} Matches no JID.
|
|
\end{description}
|
|
|
|
\subsubsection{Access Rights}
|
|
\label{AccessRights}
|
|
\ind{access}\ind{ACL}\ind{options!acl}\ind{ACL}\ind{Access Control List}
|
|
|
|
An entry allowing or denying access to different services looks similar to
|
|
this:
|
|
\begin{verbatim}
|
|
{access, <accessname>, [{allow, <aclname>},
|
|
{deny, <aclname>},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
When a JID is checked to have access to \term{<accessname>}, the server
|
|
sequentially checks if that JID matches any of the ACLs that are named in the
|
|
second elements of the tuples in the list. If it matches, the first element of
|
|
the first matched tuple is returned, otherwise the value `\term{deny}' is
|
|
returned.
|
|
|
|
Example:
|
|
\begin{verbatim}
|
|
{access, configure, [{allow, admin}]}.
|
|
{access, something, [{deny, badmans},
|
|
{allow, all}]}.
|
|
\end{verbatim}
|
|
|
|
The following access rules are pre-defined:
|
|
\begin{description}
|
|
\titem{all} Always returns the value `\term{allow}'.
|
|
\titem{none} Always returns the value `\term{deny}'.
|
|
\end{description}
|
|
|
|
\subsubsection{Limiting Opened Sessions with ACL}
|
|
\label{configmaxsessions}
|
|
\ind{options!max\_user\_sessions}
|
|
|
|
The special access \term{max\_user\_sessions} specifies the maximum
|
|
number of sessions (authenticated connections) per user. If a user
|
|
tries to open more sessions by using different resources, the first
|
|
opened session will be disconnected. The error \term{session replaced}
|
|
will be sent to the disconnected session. The value for this option
|
|
can be either a number, or \term{infinity}. The default value is
|
|
\term{infinity}.
|
|
|
|
The syntax is:
|
|
\begin{verbatim}
|
|
{access, max_user_sessions, [{<maxnumber>, <aclname>},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item To limit the number of sessions per user to 10 for all users:
|
|
\begin{verbatim}
|
|
{access, max_user_sessions, [{10, all}]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{Shapers}
|
|
\label{shapers}
|
|
\ind{options!shaper}\ind{options!maxrate}\ind{shapers}\ind{maxrate}\ind{traffic speed}
|
|
|
|
Shapers enable you to limit connection traffic. The syntax of
|
|
shapers is like this:
|
|
\begin{verbatim}
|
|
{shaper, <shapername>, <kind>}.
|
|
\end{verbatim}
|
|
Currently only one kind of shaper called \term{maxrate} is available. It has the
|
|
following syntax:
|
|
\begin{verbatim}
|
|
{maxrate, <rate>}
|
|
\end{verbatim}
|
|
where \term{<rate>} stands for the maximum allowed incoming rate in bytes per
|
|
second.
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item To define a shaper named `\term{normal}' with traffic speed limited to
|
|
1,000\,bytes/second:
|
|
\begin{verbatim}
|
|
{shaper, normal, {maxrate, 1000}}.
|
|
\end{verbatim}
|
|
\item To define a shaper named `\term{fast}' with traffic speed limited to
|
|
50,000\,bytes/second:
|
|
\begin{verbatim}
|
|
{shaper, fast, {maxrate, 50000}}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{Default Language}
|
|
\label{language}
|
|
\ind{options!language}\ind{language}
|
|
|
|
The option \option{language} defines the default language of server strings that
|
|
can be seen by \Jabber{} clients. If a \Jabber{} client do not support
|
|
\option{xml:lang}, the specified language is used. The default value is
|
|
\term{en}. In order to take effect there must be a translation file
|
|
\term{<language>.msg} in \ejabberd{}'s \term{msgs} directory.
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item To set Russian as default language:
|
|
\begin{verbatim}
|
|
{language, "ru"}.
|
|
\end{verbatim}
|
|
\item To set Spanish as default language:
|
|
\begin{verbatim}
|
|
{language, "es"}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\section{Database and LDAP Configuration}
|
|
\label{database}
|
|
\ind{database}
|
|
%TODO: this whole section is not yet 100% optimized
|
|
|
|
\ejabberd{} uses its internal Mnesia database by default. However, it is
|
|
possible to use a relational database or an LDAP server to store persistent,
|
|
long-living data. \ejabberd{} is very flexible: you can configure different
|
|
authentication methods for different virtual hosts, you can configure different
|
|
authentication mechanisms for the same virtual host (fallback), you can set
|
|
different storage systems for modules, and so forth.
|
|
|
|
The following databases are supported by \ejabberd{}:
|
|
\begin{itemize}
|
|
\item \footahref{http://www.microsoft.com/sql/}{Microsoft SQL Server}
|
|
\item \footahref{http://www.erlang.org/doc/doc-5.5.1/lib/mnesia-4.3.2/doc/}{Mnesia}
|
|
\item \footahref{http://mysql.com/}{MySQL}
|
|
\item \footahref{http://en.wikipedia.org/wiki/Open\_Database\_Connectivity}{Any ODBC compatible database}
|
|
\item \footahref{http://www.postgresql.org/}{PostgreSQL}
|
|
\end{itemize}
|
|
|
|
The following LDAP servers are tested with \ejabberd{}:
|
|
\begin{itemize}
|
|
\item \footahref{http://www.microsoft.com/activedirectory/}{Active Directory}
|
|
(see section~\ref{ad})
|
|
\item \footahref{http://www.openldap.org/}{OpenLDAP}
|
|
\item Normally any LDAP compatible server should work; inform us about your
|
|
success with a not-listed server so that we can list it here.
|
|
\end{itemize}
|
|
|
|
\subsection{MySQL}
|
|
\label{mysql}
|
|
\ind{MySQL}\ind{MySQL!schema}
|
|
|
|
Although this section will describe \ejabberd{}'s configuration when you want to
|
|
use the native MySQL driver, it does not describe MySQL's installation and
|
|
database creation. Check the MySQL documentation and the tutorial \footahref{http://support.process-one.net/doc/display/MESSENGER/Using+ejabberd+with+MySQL+native+driver}{Using ejabberd with MySQL native driver} for information regarding these topics.
|
|
Note that the tutorial contains information about \ejabberd{}'s configuration
|
|
which is duplicate to this section.
|
|
|
|
Moreover, the file mysql.sql in the directory src/odbc might be interesting for
|
|
you. This file contains the ejabberd schema for MySQL. At the end of the file
|
|
you can find information to update your database schema.
|
|
|
|
\subsubsection{Driver Compilation}
|
|
\label{compilemysql}
|
|
\ind{MySQL!Driver Compilation}
|
|
|
|
You can skip this step if you installed \ejabberd{} using a binary installer or
|
|
if the binary packages of \ejabberd{} you are using include support for MySQL.
|
|
|
|
\begin{enumerate}
|
|
\item First, install the \footahref{http://support.process-one.net/doc/display/CONTRIBS/Yxa}{Erlang
|
|
MySQL library}. Make sure the compiled files are in your Erlang path; you can
|
|
put them for example in the same directory as your ejabberd .beam files.
|
|
\item Then, configure and install \ejabberd{} with ODBC support enabled (this is
|
|
also needed for native MySQL support!). This can be done, by using next
|
|
commands:
|
|
\begin{verbatim}
|
|
./configure --enable-odbc && make install
|
|
\end{verbatim}
|
|
\end{enumerate}
|
|
|
|
\subsubsection{Authentication}
|
|
\label{mysqlauth}
|
|
\ind{MySQL!authentication}
|
|
|
|
The option value name may be misleading, as the \term{auth\_method} name is used
|
|
for access to a relational database through ODBC, as well as through the native
|
|
MySQL interface. Anyway, the first configuration step is to define the odbc
|
|
\term{auth\_method}. For example:
|
|
\begin{verbatim}
|
|
{host_config, "public.example.org", [{auth_method, [odbc]}]}.
|
|
\end{verbatim}
|
|
|
|
The actual database access is defined in the option \term{odbc\_server}. Its
|
|
value is used to define if we want to use ODBC, or one of the two native
|
|
interface available, PostgreSQL or MySQL.
|
|
|
|
To use the native MySQL interface, you can pass a tuple of the following form as
|
|
parameter:
|
|
\begin{verbatim}
|
|
{mysql, "Server", "Database", "Username", "Password"}
|
|
\end{verbatim}
|
|
|
|
\term{mysql} is a keyword that should be kept as is. For example:
|
|
\begin{verbatim}
|
|
{odbc_server, {mysql, "localhost", "test", "root", "password"}}.
|
|
\end{verbatim}
|
|
|
|
Optionally, it is possible to define the MySQL port to use. This
|
|
option is only useful, in very rare cases, when you are not running
|
|
MySQL with the default port setting. The \term{mysql} parameter
|
|
can thus take the following form:
|
|
\begin{verbatim}
|
|
{mysql, "Server", Port, "Database", "Username", "Password"}
|
|
\end{verbatim}
|
|
|
|
The \term{Port} value should be an integer, without quotes. For example:
|
|
\begin{verbatim}
|
|
{odbc_server, {mysql, "localhost", Port, "test", "root", "password"}}.
|
|
\end{verbatim}
|
|
|
|
|
|
\subsubsection{Storage}
|
|
\label{mysqlstorage}
|
|
\ind{MySQL!storage}
|
|
|
|
MySQL also can be used to store information into from several \ejabberd{}
|
|
modules. See section~\ref{modoverview} to see which modules have a version
|
|
with the `\_odbc'. This suffix indicates that the module can be used with
|
|
relational databases like MySQL. To enable storage to your database, just make
|
|
sure that your database is running well (see previous sections), and replace the
|
|
suffix-less or ldap module variant with the odbc module variant. Keep in mind
|
|
that you cannot have several variants of the same module loaded!
|
|
|
|
\subsection{Microsoft SQL Server}
|
|
\label{mssql}
|
|
\ind{Microsoft SQL Server}\ind{Microsoft SQL Server!schema}
|
|
|
|
Although this section will describe \ejabberd{}'s configuration when you want to
|
|
use Microsoft SQL Server, it does not describe Microsoft SQL Server's
|
|
installation and database creation. Check the MySQL documentation and the
|
|
tutorial \footahref{http://support.process-one.net/doc/display/MESSENGER/Using+ejabberd+with+MySQL+native+driver}{Using ejabberd with MySQL native driver} for information regarding these topics.
|
|
Note that the tutorial contains information about \ejabberd{}'s configuration
|
|
which is duplicate to this section.
|
|
|
|
Moreover, the file mssql.sql in the directory src/odbc might be interesting for
|
|
you. This file contains the ejabberd schema for Microsoft SQL Server. At the end
|
|
of the file you can find information to update your database schema.
|
|
|
|
\subsubsection{Driver Compilation}
|
|
\label{compilemssql}
|
|
\ind{Microsoft SQL Server!Driver Compilation}
|
|
|
|
You can skip this step if you installed \ejabberd{} using a binary installer or
|
|
if the binary packages of \ejabberd{} you are using include support for ODBC.
|
|
|
|
If you want to use Microsoft SQL Server with ODBC, you need to configure,
|
|
compile and install \ejabberd{} with support for ODBC and Microsoft SQL Server
|
|
enabled. This can be done, by using next commands:
|
|
\begin{verbatim}
|
|
./configure --enable-odbc --enable-mssql && make install
|
|
\end{verbatim}
|
|
|
|
\subsubsection{Authentication}
|
|
\label{mssqlauth}
|
|
\ind{Microsoft SQL Server!authentication}
|
|
|
|
%TODO: not sure if this section is right!!!!!!
|
|
|
|
The configuration of Microsoft SQL Server is the same as the configuration of
|
|
ODBC compatible servers (see section~\ref{odbcauth}).
|
|
|
|
\subsubsection{Storage}
|
|
\label{mssqlstorage}
|
|
\ind{Microsoft SQL Server!storage}
|
|
|
|
Microsoft SQL Server also can be used to store information into from several
|
|
\ejabberd{} modules. See section~\ref{modoverview} to see which modules have
|
|
a version with the `\_odbc'. This suffix indicates that the module can be used
|
|
with relational databases like Microsoft SQL Server. To enable storage to your
|
|
database, just make sure that your database is running well (see previous
|
|
sections), and replace the suffix-less or ldap module variant with the odbc
|
|
module variant. Keep in mind that you cannot have several variants of the same
|
|
module loaded!
|
|
|
|
\subsection{PostgreSQL}
|
|
\label{pgsql}
|
|
\ind{PostgreSQL}\ind{PostgreSQL!schema}
|
|
|
|
Although this section will describe \ejabberd{}'s configuration when you want to
|
|
use the native PostgreSQL driver, it does not describe PostgreSQL's installation
|
|
and database creation. Check the PostgreSQL documentation and the tutorial \footahref{http://support.process-one.net/doc/display/MESSENGER/Using+ejabberd+with+MySQL+native+driver}{Using ejabberd with MySQL native driver} for information regarding these topics.
|
|
Note that the tutorial contains information about \ejabberd{}'s configuration
|
|
which is duplicate to this section.
|
|
|
|
Also the file pg.sql in the directory src/odbc might be interesting for you.
|
|
This file contains the ejabberd schema for PostgreSQL. At the end of the file
|
|
you can find information to update your database schema.
|
|
|
|
\subsubsection{Driver Compilation}
|
|
\label{compilepgsql}
|
|
\ind{PostgreSQL!Driver Compilation}
|
|
|
|
You can skip this step if you installed \ejabberd{} using a binary installer or
|
|
if the binary packages of \ejabberd{} you are using include support for
|
|
PostgreSQL.
|
|
|
|
\begin{enumerate}
|
|
\item First, install the Erlang PgSQL library from
|
|
\footahref{http://jungerl.sourceforge.net/}{Jungerl}. Make sure the compiled
|
|
files are in your Erlang path; you can put them for example in the same
|
|
directory as your ejabberd .beam files.
|
|
\item Then, configure, compile and install \ejabberd{} with ODBC support enabled
|
|
(this is also needed for native PostgreSQL support!). This can be done, by
|
|
using next commands:
|
|
\begin{verbatim}
|
|
./configure --enable-odbc && make install
|
|
\end{verbatim}
|
|
\end{enumerate}
|
|
|
|
\subsubsection{Authentication}
|
|
\label{pgsqlauth}
|
|
\ind{PostgreSQL!authentication}
|
|
|
|
The option value name may be misleading, as the \term{auth\_method} name is used
|
|
for access to a relational database through ODBC, as well as through the native
|
|
PostgreSQL interface. Anyway, the first configuration step is to define the odbc
|
|
\term{auth\_method}. For example:
|
|
\begin{verbatim}
|
|
{host_config, "public.example.org", [{auth_method, [odbc]}]}.
|
|
\end{verbatim}
|
|
|
|
The actual database access is defined in the option \term{odbc\_server}. Its
|
|
value is used to define if we want to use ODBC, or one of the two native
|
|
interface available, PostgreSQL or MySQL.
|
|
|
|
To use the native PostgreSQL interface, you can pass a tuple of the following
|
|
form as parameter:
|
|
\begin{verbatim}
|
|
{pgsql, "Server", "Database", "Username", "Password"}
|
|
\end{verbatim}
|
|
|
|
\term{pgsql} is a keyword that should be kept as is. For example:
|
|
\begin{verbatim}
|
|
{odbc_server, {pgsql, "localhost", "database", "ejabberd", "password"}}.
|
|
\end{verbatim}
|
|
|
|
Optionally, it is possible to define the PostgreSQL port to use. This
|
|
option is only useful, in very rare cases, when you are not running
|
|
PostgreSQL with the default port setting. The \term{pgsql} parameter
|
|
can thus take the following form:
|
|
\begin{verbatim}
|
|
{pgsql, "Server", Port, "Database", "Username", "Password"}
|
|
\end{verbatim}
|
|
|
|
The \term{Port} value should be an integer, without quotes. For example:
|
|
\begin{verbatim}
|
|
{odbc_server, {pgsql, "localhost", 5432, "database", "ejabberd", "password"}}.
|
|
\end{verbatim}
|
|
|
|
\subsubsection{Storage}
|
|
\label{pgsqlstorage}
|
|
\ind{PostgreSQL!storage}
|
|
|
|
PostgreSQL also can be used to store information into from several \ejabberd{}
|
|
modules. See section~\ref{modoverview} to see which modules have a version
|
|
with the `\_odbc'. This suffix indicates that the module can be used with
|
|
relational databases like PostgreSQL. To enable storage to your database, just
|
|
make sure that your database is running well (see previous sections), and
|
|
replace the suffix-less or ldap module variant with the odbc module variant.
|
|
Keep in mind that you cannot have several variants of the same module loaded!
|
|
|
|
\subsection{ODBC Compatible}
|
|
\label{odbc}
|
|
\ind{databases!ODBC}
|
|
|
|
Although this section will describe \ejabberd{}'s configuration when you want to
|
|
use the ODBC driver, it does not describe the installation and database creation
|
|
of your database. Check the documentation of your database. The tutorial \footahref{http://support.process-one.net/doc/display/MESSENGER/Using+ejabberd+with+MySQL+native+driver}{Using ejabberd with MySQL native driver} also can help you. Note that the tutorial
|
|
contains information about \ejabberd{}'s configuration which is duplicate to
|
|
this section.
|
|
|
|
\subsubsection{Compilation}
|
|
\label{compileodbc}
|
|
|
|
You can skip this step if you installed \ejabberd{} using a binary installer or
|
|
if the binary packages of \ejabberd{} you are using include support for
|
|
ODBC.
|
|
|
|
\begin{enumerate}
|
|
\item First, install the \footahref{http://support.process-one.net/doc/display/CONTRIBS/Yxa}{Erlang
|
|
MySQL library}. Make sure the compiled files are in your Erlang path; you can
|
|
put them for example in the same directory as your ejabberd .beam files.
|
|
\item Then, configure, compile and install \ejabberd{} with ODBC support
|
|
enabled. This can be done, by using next commands:
|
|
\begin{verbatim}
|
|
./configure --enable-odbc && make install
|
|
\end{verbatim}
|
|
\end{enumerate}
|
|
|
|
\subsubsection{Authentication}
|
|
\label{odbcauth}
|
|
\ind{ODBC!authentication}
|
|
|
|
The first configuration step is to define the odbc \term{auth\_method}. For
|
|
example:
|
|
\begin{verbatim}
|
|
{host_config, "public.example.org", [{auth_method, [odbc]}]}.
|
|
\end{verbatim}
|
|
|
|
The actual database access is defined in the option \term{odbc\_server}. Its
|
|
value is used to defined if we want to use ODBC, or one of the two native
|
|
interface available, PostgreSQL or MySQL.
|
|
|
|
To use a relational database through ODBC, you can pass the ODBC connection
|
|
string as \term{odbc\_server} parameter. For example:
|
|
\begin{verbatim}
|
|
{odbc_server, "DSN=database;UID=ejabberd;PWD=password"}.
|
|
\end{verbatim}
|
|
|
|
\subsubsection{Storage}
|
|
\label{odbcstorage}
|
|
\ind{ODBC!storage}
|
|
|
|
An ODBC compatible database also can be used to store information into from
|
|
several \ejabberd{} modules. See section~\ref{modoverview} to see which
|
|
modules have a version with the `\_odbc'. This suffix indicates that the module
|
|
can be used with ODBC compatible relational databases. To enable storage to your
|
|
database, just make sure that your database is running well (see previous
|
|
sections), and replace the suffix-less or ldap module variant with the odbc
|
|
module variant. Keep in mind that you cannot have several variants of the same
|
|
module loaded!
|
|
|
|
\subsection{LDAP}
|
|
\label{ldap}
|
|
\ind{databases!LDAP}
|
|
|
|
\ejabberd{} has built-in LDAP support. You can authenticate users against LDAP
|
|
server and use LDAP directory as vCard storage. Shared rosters are not supported
|
|
yet.
|
|
|
|
\subsubsection{Connection}
|
|
\label{ldapconnection}
|
|
|
|
Parameters:
|
|
\begin{description}
|
|
\titem{ldap\_server} \ind{options!ldap\_server}IP address or dns name of your
|
|
LDAP server. This option is required.
|
|
\titem{ldap\_port} \ind{options!ldap\_port}Port to connect to your LDAP server.
|
|
The initial default value is~389, so it is used when nothing is set into the
|
|
configuration file.
|
|
If you configure a value, it is stored in ejabberd's database.
|
|
Then, if you remove that value from the configuration file,
|
|
the value previously stored in the database will be used instead of the default 389.
|
|
\titem{ldap\_rootdn} \ind{options!ldap\_rootdn}Bind DN. The default value
|
|
is~\term{""} which means `anonymous connection'.
|
|
\titem{ldap\_password} \ind{options!ldap\_password}Bind password. The default
|
|
value is \term{""}.
|
|
\end{description}
|
|
|
|
Example:
|
|
\begin{verbatim}
|
|
{auth_method, ldap}.
|
|
{ldap_servers, ["ldap.example.org"]}.
|
|
{ldap_port, 389}.
|
|
{ldap_rootdn, "cn=Manager,dc=domain,dc=org"}.
|
|
{ldap_password, "secret"}.
|
|
\end{verbatim}
|
|
|
|
Note that current LDAP implementation does not support SSL secured communication
|
|
and SASL authentication.
|
|
|
|
\subsubsection{Authentication}
|
|
\label{ldapauth}
|
|
|
|
You can authenticate users against an LDAP directory. Available options are:
|
|
|
|
\begin{description}
|
|
\titem{ldap\_base}\ind{options!ldap\_base}LDAP base directory which stores
|
|
users accounts. This option is required.
|
|
\titem{ldap\_uids}\ind{options!ldap\_uids}LDAP attribute which holds a list
|
|
of attributes to use as alternatives for getting the JID. The value is of
|
|
the form: \term{[\{ldap\_uidattr\}]} or \term{[\{ldap\_uidattr,
|
|
ldap\_uidattr\_format\}]}. You can use as many comma separated tuples
|
|
\term{\{ldap\_uidattr, ldap\_uidattr\_format\}} that is needed. The default
|
|
value is \term{[\{"uid", "\%u"\}]}. The defaut \term{ldap\_uidattr\_format}
|
|
is \term{"\%u"}. The values for \term{ldap\_uidattr} and
|
|
\term{ldap\_uidattr\_format} are described as follow:
|
|
\begin{description}
|
|
\titem{ldap\_uidattr}\ind{options!ldap\_uidattr}LDAP attribute which holds
|
|
the user's part of a JID. The default value is \term{"uid"}.
|
|
\titem{ldap\_uidattr\_format}\ind{options!ldap\_uidattr\_format}Format of
|
|
the \term{ldap\_uidattr} variable. The format \emph{must} contain one and
|
|
only one pattern variable \term{"\%u"} which will be replaced by the
|
|
user's part of a JID. For example, \term{"\%u@example.org"}. The default
|
|
value is \term{"\%u"}.
|
|
\end{description}
|
|
\titem{ldap\_filter}\ind{options!ldap\_filter}\ind{protocols!RFC 2254: The
|
|
String Representation of LDAP Search Filters}
|
|
\footahref{http://www.faqs.org/rfcs/rfc2254.html}{RFC 2254} LDAP filter. The
|
|
default is \term{none}. Example:
|
|
\term{"(\&(objectClass=shadowAccount)(memberOf=Jabber Users))"}. Please, do
|
|
not forget to close brackets and do not use superfluous whitespaces. Also you
|
|
\emph{must not} use \option{ldap\_uidattr} attribute in filter because this
|
|
attribute will be substituted in LDAP filter automatically.
|
|
\end{description}
|
|
|
|
\subsubsection{Examples}
|
|
\label{ldapexamples}
|
|
|
|
\paragraph{\aname{ldapcommonexample}{Common example}}
|
|
|
|
Let's say \term{ldap.example.org} is the name of our LDAP server. We have
|
|
users with their passwords in \term{"ou=Users,dc=example,dc=org"} directory.
|
|
Also we have addressbook, which contains users emails and their additional
|
|
infos in \term{"ou=AddressBook,dc=example,dc=org"} directory. Corresponding
|
|
authentication section should looks like this:
|
|
|
|
\begin{verbatim}
|
|
%% authentication method
|
|
{auth_method, ldap}.
|
|
%% DNS name of our LDAP server
|
|
{ldap_servers, ["ldap.example.org"]}.
|
|
%% Bind to LDAP server as "cn=Manager,dc=example,dc=org" with password "secret"
|
|
{ldap_rootdn, "cn=Manager,dc=example,dc=org"}.
|
|
{ldap_password, "secret"}.
|
|
%% define the user's base
|
|
{ldap_base, "ou=Users,dc=example,dc=org"}.
|
|
%% We want to authorize users from 'shadowAccount' object class only
|
|
{ldap_filter, "(objectClass=shadowAccount)"}.
|
|
\end{verbatim}
|
|
|
|
Now we want to use users LDAP-info as their vCards. We have four attributes
|
|
defined in our LDAP schema: \term{"mail"} --- email address, \term{"givenName"}
|
|
--- first name, \term{"sn"} --- second name, \term{"birthDay"} --- birthday.
|
|
Also we want users to search each other. Let's see how we can set it up:
|
|
|
|
\begin{verbatim}
|
|
{modules,
|
|
...
|
|
{mod_vcard_ldap,
|
|
[
|
|
%% We use the same server and port, but want to bind anonymously because
|
|
%% our LDAP server accepts anonymous requests to
|
|
%% "ou=AddressBook,dc=example,dc=org" subtree.
|
|
{ldap_rootdn, ""},
|
|
{ldap_password, ""},
|
|
%% define the addressbook's base
|
|
{ldap_base, "ou=AddressBook,dc=example,dc=org"},
|
|
%% uidattr: user's part of JID is located in the "mail" attribute
|
|
%% uidattr_format: common format for our emails
|
|
{ldap_uids, [{"mail", "%u@mail.example.org"}]},
|
|
%% We have to define empty filter here, because entries in addressbook does not
|
|
%% belong to shadowAccount object class
|
|
{ldap_filter, ""},
|
|
%% Now we want to define vCard pattern
|
|
{ldap_vcard_map,
|
|
[{"NICKNAME", "%u", []}, % just use user's part of JID as his nickname
|
|
{"GIVEN", "%s", ["givenName"]},
|
|
{"FAMILY", "%s", ["sn"]},
|
|
{"FN", "%s, %s", ["sn", "givenName"]}, % example: "Smith, John"
|
|
{"EMAIL", "%s", ["mail"]},
|
|
{"BDAY", "%s", ["birthDay"]}]},
|
|
%% Search form
|
|
{ldap_search_fields,
|
|
[{"User", "%u"},
|
|
{"Name", "givenName"},
|
|
{"Family Name", "sn"},
|
|
{"Email", "mail"},
|
|
{"Birthday", "birthDay"}]},
|
|
%% vCard fields to be reported
|
|
%% Note that JID is always returned with search results
|
|
{ldap_search_reported,
|
|
[{"Full Name", "FN"},
|
|
{"Nickname", "NICKNAME"},
|
|
{"Birthday", "BDAY"}]}
|
|
]},
|
|
...
|
|
}.
|
|
\end{verbatim}
|
|
|
|
Note that \modvcardldap{} module checks for the existence of the user before
|
|
searching in his information in LDAP.
|
|
|
|
|
|
\paragraph{Active Directory}
|
|
\label{ad}
|
|
\ind{databases!Active Directory}
|
|
|
|
Active Directory is just an LDAP-server with predefined attributes. A sample
|
|
configuration is shown below:
|
|
|
|
\begin{verbatim}
|
|
{auth_method, ldap}.
|
|
{ldap_servers, ["office.org"]}. % List of LDAP servers
|
|
{ldap_base, "DC=office,DC=org"}. % Search base of LDAP directory
|
|
{ldap_rootdn, "CN=Administrator,CN=Users,DC=office,DC=org"}. % LDAP manager
|
|
{ldap_password, "*******"}. % Password to LDAP manager
|
|
{ldap_uids, [{"sAMAccountName"}]}.
|
|
{ldap_filter, "(memberOf=*)"}.
|
|
|
|
{modules,
|
|
...
|
|
{mod_vcard_ldap,
|
|
[{ldap_vcard_map,
|
|
[{"NICKNAME", "%u", []},
|
|
{"GIVEN", "%s", ["givenName"]},
|
|
{"MIDDLE", "%s", ["initials"]},
|
|
{"FAMILY", "%s", ["sn"]},
|
|
{"FN", "%s", ["displayName"]},
|
|
{"EMAIL", "%s", ["mail"]},
|
|
{"ORGNAME", "%s", ["company"]},
|
|
{"ORGUNIT", "%s", ["department"]},
|
|
{"CTRY", "%s", ["c"]},
|
|
{"LOCALITY", "%s", ["l"]},
|
|
{"STREET", "%s", ["streetAddress"]},
|
|
{"REGION", "%s", ["st"]},
|
|
{"PCODE", "%s", ["postalCode"]},
|
|
{"TITLE", "%s", ["title"]},
|
|
{"URL", "%s", ["wWWHomePage"]},
|
|
{"DESC", "%s", ["description"]},
|
|
{"TEL", "%s", ["telephoneNumber"]}]},
|
|
{ldap_search_fields,
|
|
[{"User", "%u"},
|
|
{"Name", "givenName"},
|
|
{"Family Name", "sn"},
|
|
{"Email", "mail"},
|
|
{"Company", "company"},
|
|
{"Department", "department"},
|
|
{"Role", "title"},
|
|
{"Description", "description"},
|
|
{"Phone", "telephoneNumber"}]},
|
|
{ldap_search_reported,
|
|
[{"Full Name", "FN"},
|
|
{"Nickname", "NICKNAME"},
|
|
{"Email", "EMAIL"}]}
|
|
]},
|
|
...
|
|
}.
|
|
\end{verbatim}
|
|
|
|
|
|
\section{Modules Configuration}
|
|
\label{modules}
|
|
\ind{modules}
|
|
|
|
The option \term{modules} defines the list of modules that will be loaded after
|
|
\ejabberd{}'s startup. Each entry in the list is a tuple in which the first
|
|
element is the name of a module and the second is a list of options for that
|
|
module.
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item In this example only the module \modecho{} is loaded and no module
|
|
options are specified between the square brackets:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[{mod_echo, []}
|
|
]}.
|
|
\end{verbatim}
|
|
\item In the second example the modules \modecho{}, \modtime{}, and
|
|
\modversion{} are loaded without options. Remark that, besides the last entry,
|
|
all entries end with a comma:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[{mod_echo, []},
|
|
{mod_time, []},
|
|
{mod_version, []}
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{Overview}
|
|
\label{modoverview}
|
|
\ind{modules!overview}\ind{XMPP compliancy}
|
|
|
|
The following table lists all modules included in \ejabberd{}.
|
|
|
|
\begin{table}[H]
|
|
\centering
|
|
\begin{tabular}{|l|l|l|l|}
|
|
\hline Module & Feature & Dependencies & Needed for XMPP? \\
|
|
\hline \hline \modadhoc{} & Ad-Hoc Commands (\xepref{0050}) & & No \\
|
|
\hline \modannounce{} & Manage announcements & \modadhoc{} & No \\
|
|
\hline \modcaps{} & Request and cache Entity Capabilities (\xepref{0115}) & & No \\
|
|
\hline \modconfigure{} & Server configuration using Ad-Hoc & \modadhoc{} & No \\
|
|
\hline \moddisco{} & Service Discovery (\xepref{0030}) & & No \\
|
|
\hline \modecho{} & Echoes Jabber packets & & No \\
|
|
\hline \modirc{} & IRC transport & & No \\
|
|
\hline \modlast{} & Last Activity (\xepref{0012}) & & No \\
|
|
\hline \modlastodbc{} & Last Activity (\xepref{0012}) & supported database (*) & No \\
|
|
\hline \modmuc{} & Multi-User Chat (\xepref{0045}) & & No \\
|
|
\hline \modmuclog{} & Multi-User Chat room logging & \modmuc{} & No \\
|
|
\hline \modoffline{} & Offline message storage & & No \\
|
|
\hline \modofflineodbc{} & Offline message storage & supported database (*) & No \\
|
|
\hline \modprivacy{} & Blocking Communications & & Yes \\
|
|
\hline \modprivacyodbc{} & Blocking Communications & supported database (*) & Yes \\
|
|
\hline \modprivate{} & Private XML Storage (\xepref{0049}) & & No \\
|
|
\hline \modprivateodbc{} & Private XML Storage (\xepref{0049}) & supported database (*) & No \\
|
|
\hline \modproxy{} & SOCKS5 Bytestreams (\xepref{0065}) & & No\\
|
|
\hline \modpubsub{} & Publish-Subscribe (\xepref{0060}) and PEP (\xepref{0163}) & \modcaps{} & No \\
|
|
\hline \modregister{} & In-Band Registration (\xepref{0077}) & & No \\
|
|
\hline \modroster{} & Roster management & & Yes (**) \\
|
|
\hline \modrosterodbc{} & Roster management & supported database (*) & Yes (**) \\
|
|
\hline \modservicelog{} & Copy user messages to logger service & & No \\
|
|
\hline \modsharedroster{} & Shared roster management & \modroster{} or & No \\
|
|
& & \modrosterodbc{} & \\
|
|
\hline \modstats{} & Statistics Gathering (\xepref{0039}) & & No \\
|
|
\hline \modtime{} & Entity Time (\xepref{0090}) & & No \\
|
|
\hline \modvcard{} & vcard-temp (\xepref{0054}) & & No \\
|
|
\hline \modvcardldap{} & vcard-temp (\xepref{0054}) & LDAP server & No \\
|
|
\hline \modvcardodbc{} & vcard-temp (\xepref{0054}) & supported database (*) & No \\
|
|
\hline \modversion{} & Software Version (\xepref{0092}) & & No\\
|
|
\hline
|
|
\end{tabular}
|
|
\end{table}
|
|
|
|
\begin{itemize}
|
|
\item (*) For a list of supported databases, see section~\ref{database}.
|
|
\item (**) This module or a similar one with another database backend is needed for
|
|
XMPP compliancy.
|
|
\end{itemize}
|
|
|
|
You can see which database backend each module needs by looking at the suffix:
|
|
\begin{itemize}
|
|
\item No suffix, this means that the modules uses Erlang's built-in database
|
|
Mnesia as backend.
|
|
\item `\_odbc', this means that the module needs a supported database
|
|
(see~\ref{database}) as backend.
|
|
\item `\_ldap', this means that the module needs an LDAP server as backend.
|
|
\end{itemize}
|
|
|
|
If you want to,
|
|
it is possible to use a relational database to store pieces of
|
|
information. You can do this by changing the module name to a name with an
|
|
\term{\_odbc} suffix in \ejabberd{} config file. You can use a relational
|
|
database for the following data:
|
|
|
|
\begin{itemize}
|
|
\item Last connection date and time: Use \term{mod\_last\_odbc} instead of
|
|
\term{mod\_last}.
|
|
\item Offline messages: Use \term{mod\_offline\_odbc} instead of
|
|
\term{mod\_offline}.
|
|
\item Rosters: Use \term{mod\_roster\_odbc} instead of \term{mod\_roster}.
|
|
\item Users' VCARD: Use \term{mod\_vcard\_odbc} instead of \term{mod\_vcard}.
|
|
\item Private XML storage: Use \term{mod\_private\_odbc} instead of \term{mod\_private}.
|
|
\item User rules for blocking communications: Use \term{mod\_privacy\_odbc} instead of \term{mod\_privacy}.
|
|
\end{itemize}
|
|
|
|
You can find more
|
|
\footahref{http://www.ejabberd.im/contributions}{contributed modules} on the
|
|
\ejabberd{} website. Please remember that these contributions might not work or
|
|
that they can contain severe bugs and security leaks. Therefore, use them at
|
|
your own risk!
|
|
|
|
|
|
\subsection{Common Options}
|
|
\label{modcommonoptions}
|
|
|
|
The following options are used by many modules. Therefore, they are described in
|
|
this separate section.
|
|
|
|
\subsubsection{\option{iqdisc}}
|
|
\label{modiqdiscoption}
|
|
\ind{options!iqdisc}
|
|
|
|
Many modules define handlers for processing IQ queries of different namespaces
|
|
to this server or to a user (e.\,g.\ to \jid{example.org} or to
|
|
\jid{user@example.org}). This option defines processing discipline for
|
|
these queries. Possible values are:
|
|
\begin{description}
|
|
\titem{no\_queue} All queries of a namespace with this processing discipline are
|
|
processed immediately. This also means that no other packets can be processed
|
|
until this one has been completely processed. Hence this discipline is not
|
|
recommended if the processing of a query can take a relatively long time.
|
|
\titem{one\_queue} In this case a separate queue is created for the processing
|
|
of IQ queries of a namespace with this discipline. In addition, the processing
|
|
of this queue is done in parallel with that of other packets. This discipline
|
|
is most recommended.
|
|
\titem{parallel} For every packet with this discipline a separate Erlang process
|
|
is spawned. Consequently, all these packets are processed in parallel.
|
|
Although spawning of Erlang process has a relatively low cost, this can break
|
|
the server's normal work, because the Erlang emulator has a limit on the
|
|
number of processes (32000 by default).
|
|
\end{description}
|
|
|
|
Example:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_time, [{iqdisc, no_queue}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
|
|
\subsubsection{\option{host}}
|
|
\label{modhostoption}
|
|
\ind{options!host}
|
|
|
|
This option defines the Jabber ID of a service provided by an ejabberd module.
|
|
The keyword "@HOST@" is replaced at start time with the real virtual host string.
|
|
|
|
This example configures
|
|
the \ind{modules!\modecho{}}echo module to provide its echoing service
|
|
in the Jabber ID \jid{mirror.example.org}:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_echo, [{host, "mirror.example.org"}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
|
|
However, if there are several virtual hosts and this module is enabled in all of them,
|
|
the "@HOST@" keyword must be used:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_echo, [{host, "mirror.@HOST@"}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
|
|
\subsection{\modannounce{}}
|
|
\label{modannounce}
|
|
\ind{modules!\modannounce{}}\ind{MOTD}\ind{message of the day}\ind{announcements}
|
|
|
|
This module enables configured users to broadcast announcements and to set
|
|
the message of the day (MOTD). Configured users can do these actions with their
|
|
\Jabber{} client using Ad-hoc commands or by sending messages to specific JIDs. These JIDs are listed in
|
|
next paragraph. The first JID in each entry will apply only to the virtual host
|
|
\jid{example.org}, while the JID between brackets will apply to all virtual
|
|
hosts:
|
|
\begin{description}
|
|
\titem{example.org/announce/all (example.org/announce/all-hosts/all)} The
|
|
message is sent to all registered users. If the user is online and connected
|
|
to several resources, only the resource with the highest priority will receive
|
|
the message. If the registered user is not connected, the message will be
|
|
stored offline in assumption that \ind{modules!\modoffline{}}offline storage
|
|
(see section~\ref{modoffline}) is enabled.
|
|
\titem{example.org/announce/online (example.org/announce/all-hosts/online)}The
|
|
message is sent to all connected users. If the user is online and connected
|
|
to several resources, all resources will receive the message.
|
|
\titem{example.org/announce/motd (example.org/announce/all-hosts/motd)}The
|
|
message is set as the message of the day (MOTD) and is sent to users when they
|
|
login. In addition the message is sent to all connected users (similar to
|
|
\term{announce/online}).
|
|
\titem{example.org/announce/motd/update (example.org/announce/all-hosts/motd/update)}
|
|
The message is set as message of the day (MOTD) and is sent to users when they
|
|
login. The message is \emph{not sent} to any currently connected user.
|
|
\titem{example.org/announce/motd/delete (example.org/announce/all-hosts/motd/delete)}
|
|
Any message sent to this JID removes the existing message of the day (MOTD).
|
|
\end{description}
|
|
|
|
Options:
|
|
\begin{description}
|
|
\titem{access} \ind{options!access}This option specifies who is allowed to
|
|
send announcements and to set the message of the day (by default, nobody is
|
|
able to send such messages).
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item Only administrators can send announcements:
|
|
\begin{verbatim}
|
|
{access, announce, [{allow, admins}]}.
|
|
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_announce, [{access, announce}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item Administrators as well as the direction can send announcements:
|
|
\begin{verbatim}
|
|
{acl, direction, {user, "big_boss", "example.org"}}.
|
|
{acl, direction, {user, "assistant", "example.org"}}.
|
|
{acl, admins, {user, "admin", "example.org"}}.
|
|
...
|
|
{access, announce, [{allow, admins},
|
|
{allow, direction}]}.
|
|
...
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_announce, [{access, announce}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
Note that \modannounce{} can be resource intensive on large
|
|
deployments as it can broadcast lot of messages. This module should be
|
|
disabled for instances of ejabberd with hundreds of thousands users.
|
|
|
|
\subsection{\moddisco{}}
|
|
\label{moddisco}
|
|
\ind{modules!\moddisco{}}\ind{protocols!XEP-0030: Service Discovery}\ind{protocols!XEP-0011: Jabber Browsing}\ind{protocols!XEP-0094: Agent Information}
|
|
|
|
This module adds support for Service Discovery (\xepref{0030}). With
|
|
this module enabled, services on your server can be discovered by
|
|
\Jabber{} clients. Note that \ejabberd{} has no modules with support
|
|
for the superseded Jabber Browsing (\xepref{0011}) and Agent Information
|
|
(\xepref{0094}). Accordingly, \Jabber{} clients need to have support for
|
|
the newer Service Discovery protocol if you want them be able to discover
|
|
the services you offer.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\iqdiscitem{Service Discovery (\ns{http://jabber.org/protocol/disco\#items} and
|
|
\ns{http://jabber.org/protocol/disco\#info})}
|
|
\titem{extra\_domains} \ind{options!extra\_domains}With this option,
|
|
extra domains can be added to the Service Discovery item list.
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item To serve a link to the Jabber User Directory on \jid{jabber.org}:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_disco, [{extra_domains, ["users.jabber.org"]}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item To serve a link to the transports on another server:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_disco, [{extra_domains, ["icq.example.com",
|
|
"msn.example.com"]}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item To serve a link to a few friendly servers:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_disco, [{extra_domains, ["example.org",
|
|
"example.com"]}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
|
|
\subsection{\modecho{}}
|
|
\label{modecho}
|
|
\ind{modules!\modecho{}}\ind{debugging}
|
|
|
|
This module simply echoes any \Jabber{}
|
|
packet back to the sender. This mirror can be of interest for
|
|
\ejabberd{} and \Jabber{} client debugging.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\hostitem{echo}
|
|
\end{description}
|
|
|
|
Example: Mirror, mirror, on the wall, who is the most beautiful
|
|
of them all?
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_echo, [{host, "mirror.example.org"}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
|
|
\ifthenelse{\boolean{modhttpbind}}{\input{mod_http_bind.tex}}{}
|
|
|
|
\ifthenelse{\boolean{modhttpfileserver}}{\input{mod_http_fileserver.tex}}{}
|
|
|
|
\subsection{\modirc{}}
|
|
\label{modirc}
|
|
\ind{modules!\modirc{}}\ind{IRC}
|
|
|
|
This module is an IRC transport that can be used to join channels on IRC
|
|
servers.
|
|
|
|
End user information:
|
|
\ind{protocols!groupchat 1.0}\ind{protocols!XEP-0045: Multi-User Chat}
|
|
\begin{itemize}
|
|
\item A \Jabber{} client with `groupchat 1.0' support or Multi-User
|
|
Chat support (\xepref{0045}) is necessary to join IRC channels.
|
|
\item An IRC channel can be joined in nearly the same way as joining a
|
|
\Jabber{} Multi-User Chat room. The difference is that the room name will
|
|
be `channel\%\jid{irc.example.org}' in case \jid{irc.example.org} is
|
|
the IRC server hosting `channel'. And of course the host should point
|
|
to the IRC transport instead of the Multi-User Chat service.
|
|
\item You can register your nickame by sending `IDENTIFY password' to \\
|
|
\jid{nickserver!irc.example.org@irc.jabberserver.org}.
|
|
\item Entering your password is possible by sending `LOGIN nick password' \\
|
|
to \jid{nickserver!irc.example.org@irc.jabberserver.org}.
|
|
\item When using a popular \Jabber{} server, it can occur that no
|
|
connection can be achieved with some IRC servers because they limit the
|
|
number of conections from one IP.
|
|
\end{itemize}
|
|
|
|
Options:
|
|
\begin{description}
|
|
\hostitem{irc}
|
|
\titem{access} \ind{options!access}This option can be used to specify who
|
|
may use the IRC transport (default value: \term{all}).
|
|
\titem{default\_encoding} \ind{options!defaultencoding}Set the default IRC encoding (default value: \term{"koi8-r"}).
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item In the first example, the IRC transport is available on (all) your
|
|
virtual host(s) with the prefix `\jid{irc.}'. Furthermore, anyone is
|
|
able to use the transport. The default encoding is set to "iso8859-15".
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_irc, [{access, all}, {default_encoding, "iso8859-15"}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item In next example the IRC transport is available with JIDs with prefix \jid{irc-t.net}.
|
|
Moreover, the transport is only accessible by paying customers registered on
|
|
our domains and on other servers.
|
|
\begin{verbatim}
|
|
{acl, paying_customers, {user, "customer1", "example.net"}}.
|
|
{acl, paying_customers, {user, "customer2", "example.com"}}.
|
|
{acl, paying_customers, {user, "customer3", "example.org"}}.
|
|
...
|
|
{access, paying_customers, [{allow, paying_customers},
|
|
{deny, all}]}.
|
|
...
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_irc, [{access, paying_customers},
|
|
{host, "irc.example.net"}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{\modlast{}}
|
|
\label{modlast}
|
|
\ind{modules!\modlast{}}\ind{protocols!XEP-0012: Last Activity}
|
|
|
|
This module adds support for Last Activity (\xepref{0012}). It can be used to
|
|
discover when a disconnected user last accessed the server, to know when a
|
|
connected user was last active on the server, or to query the uptime of the
|
|
\ejabberd{} server.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\iqdiscitem{Last activity (\ns{jabber:iq:last})}
|
|
\end{description}
|
|
|
|
\subsection{\modmuc{}}
|
|
\label{modmuc}
|
|
\ind{modules!\modmuc{}}\ind{protocols!XEP-0045: Multi-User Chat}\ind{conferencing}
|
|
|
|
With this module enabled, your server will support Multi-User Chat
|
|
(\xepref{0045}). End users will be able to join text conferences.
|
|
|
|
Some of the features of Multi-User Chat:
|
|
\begin{itemize}
|
|
\item Sending private messages to room participants.
|
|
\item Inviting users.
|
|
\item Setting a conference topic.
|
|
\item Creating password protected rooms.
|
|
\item Kicking and banning participants.
|
|
\end{itemize}
|
|
|
|
The MUC service allows any Jabber ID to register a nickname,
|
|
so nobody else can use that nickname in any room in the MUC service.
|
|
To register a nickname, open the Service Discovery in your
|
|
Jabber client and Register in the MUC service.
|
|
|
|
The MUC service allows the service administrator to send a message
|
|
to all existing chatrooms.
|
|
To do so, send the message to the Jabber ID of the MUC service.
|
|
|
|
This module supports clustering and load
|
|
balancing. One module can be started per cluster node. Rooms are
|
|
distributed at creation time on all available MUC module
|
|
instances. The multi-user chat module is clustered but the room
|
|
themselves are not clustered nor fault-tolerant: if the node managing a
|
|
set of rooms goes down, the rooms disappear and they will be recreated
|
|
on an available node on first connection attempt.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\hostitem{conference}
|
|
\titem{access} \ind{options!access}You can specify who is allowed to use
|
|
the Multi-User Chat service (by default, everyone is allowed to use it).
|
|
\titem{access\_create} \ind{options!access\_create}To configure who is
|
|
allowed to create new rooms at the Multi-User Chat service, this option
|
|
can be used (by default, everybody is allowed to create rooms).
|
|
\titem{access\_persistent} \ind{options!access\_persistent}To configure who is
|
|
allowed to modify the 'persistent' chatroom option
|
|
(by default, everybody is allowed to modify that option).
|
|
\titem{access\_admin} \ind{options!access\_admin}This option specifies
|
|
who is allowed to administrate the Multi-User Chat service (the default
|
|
value is \term{none}, which means that only the room creator can
|
|
administer his room). By sending a message to the service JID,
|
|
administrators can send service messages that will be displayed in every
|
|
active room.
|
|
|
|
\titem{history\_size} \ind{options!history\_size}A small history of
|
|
the current discussion is sent to users when they enter the
|
|
room. With this option you can define the number of history messages
|
|
to keep and send to users joining the room. The value is an
|
|
integer. Setting the value to \term{0} disables the history feature
|
|
and, as a result, nothing is kept in memory. The default value is
|
|
\term{20}. This value is global and thus affects all rooms on the
|
|
server.
|
|
|
|
\titem{max\_users} \ind{options!max\_users} This option defines at
|
|
the server level, the maximum number of users allowed per MUC
|
|
room. It can be lowered in each room configuration but cannot be
|
|
increased in individual MUC room configuration. The default value is
|
|
200.
|
|
|
|
\titem{max\_users\_admin\_threshold}
|
|
\ind{options!max\_users\_admin\_threshold} This option defines the
|
|
number of MUC admins or owners to allow to enter the room even if
|
|
the maximum number of allowed users is reached. The default limits
|
|
is 5. In most cases this default value is the best setting.
|
|
|
|
\titem{max\_user\_conferences}
|
|
\ind{options!max\_user\_conferences} This option define the maximum
|
|
number of chat room any given user will be able to join. The default
|
|
is 10. This option is used to prevent possible abuses. Note that
|
|
this is a soft limits: Some users can sometime join more conferences
|
|
in cluster configurations.
|
|
|
|
\titem{min\_message\_interval} \ind{options!min\_message\_interval}
|
|
This option defines the minimum interval between two messages send
|
|
by a user in seconds. This option is global and valid for all chat
|
|
rooms. A decimal value can be used. When this option is not defined,
|
|
message rate is not limited. This feature can be used to protect a
|
|
MUC service from users abuses and limit number of messages that will
|
|
be broadcasted by the service. A good value for this minimum message
|
|
interval is 0.4 second. If a user tries to send messages faster, an
|
|
error is send back explaining that the message have been discarded
|
|
and describing the reason why the message is not acceptable.
|
|
|
|
\titem{min\_presence\_interval}
|
|
\ind{options!min\_presence\_interval} This option defines the
|
|
minimum of time between presence changes coming from a given user in
|
|
seconds. This option is global and valid for all chat rooms. A
|
|
decimal value can be used. When this option is not defined, no
|
|
restriction is applied. This option can be used to protect a MUC
|
|
service for users abuses, as fastly changing a user presence will
|
|
result in possible large presence packet broadcast. If a user tries
|
|
to change its presence more often than the specified interval, the
|
|
presence is cached by ejabberd and only the last presence is
|
|
broadcasted to all users in the room after expiration of the
|
|
interval delay. Intermediate presence packets are silently
|
|
discarded. A good value for this option is 4 seconds.
|
|
|
|
\titem{default\_room\_opts} \ind{options!default\_room\_opts}This
|
|
option allow to define the desired default room options. Obviously,
|
|
the room creator can modify the room options at any time. The
|
|
available room options are: \option{allow\_change\_subj},
|
|
\option{allow\_private\_messages}, \option{allow\_query\_users},
|
|
\option{allow\_user\_invites}, \option{anonymous}, \option{logging},
|
|
\option{members\_by\_default}, \option{members\_only},
|
|
\option{moderated}, \option{password}, \option{password\_protected},
|
|
\option{persistent}, \option{public}, \option{public\_list},
|
|
\option{title}. All of them can be set to \option{true} or
|
|
\option{false}, except \option{password} and \option{title} which
|
|
are strings.
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item In the first example everyone is allowed to use the Multi-User Chat
|
|
service. Everyone will also be able to create new rooms but only the user
|
|
\jid{admin@example.org} is allowed to administrate any room. In this
|
|
example he is also a global administrator. When \jid{admin@example.org}
|
|
sends a message such as `Tomorrow, the \Jabber{} server will be moved
|
|
to new hardware. This will involve service breakdowns around 23:00 UMT.
|
|
We apologise for this inconvenience.' to \jid{conference.example.org},
|
|
it will be displayed in all active rooms. In this example the history
|
|
feature is disabled.
|
|
\begin{verbatim}
|
|
{acl, admins, {user, "admin", "example.org"}}.
|
|
...
|
|
{access, muc_admins, [{allow, admins}]}.
|
|
...
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_muc, [{access, all},
|
|
{access_create, all},
|
|
{access_admin, muc_admins},
|
|
{history_size, 0}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item In the second example the Multi-User Chat service is only accessible by
|
|
paying customers registered on our domains and on other servers. Of course
|
|
the administrator is also allowed to access rooms. In addition, he is the
|
|
only authority able to create and administer rooms. When
|
|
\jid{admin@example.org} sends a message such as `Tomorrow, the \Jabber{}
|
|
server will be moved to new hardware. This will involve service breakdowns
|
|
around 23:00 UMT. We apologise for this inconvenience.' to
|
|
\jid{conference.example.org}, it will be displayed in all active rooms. No
|
|
\term{history\_size} option is used, this means that the feature is enabled
|
|
and the default value of 20 history messages will be send to the users.
|
|
\begin{verbatim}
|
|
{acl, paying_customers, {user, "customer1", "example.net"}}.
|
|
{acl, paying_customers, {user, "customer2", "example.com"}}.
|
|
{acl, paying_customers, {user, "customer3", "example.org"}}.
|
|
{acl, admins, {user, "admin", "example.org"}}.
|
|
...
|
|
{access, muc_admins, [{allow, admins},
|
|
{deny, all}]}.
|
|
{access, muc_access, [{allow, paying_customers},
|
|
{allow, admins},
|
|
{deny, all}]}.
|
|
...
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_muc, [{access, muc_access},
|
|
{access_create, muc_admins},
|
|
{access_admin, muc_admins}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
|
|
\item In the following example, MUC anti abuse options are used. A
|
|
user cannot send more than one message every 0.4 seconds and cannot
|
|
change its presence more than once every 4 seconds. No ACLs are
|
|
defined, but some user restriction could be added as well:
|
|
|
|
\begin{verbatim}
|
|
...
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_muc, [{min_message_interval, 0.4},
|
|
{min_presence_interval, 4}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
|
|
\item This example shows how to use \option{default\_room\_opts} to make sure
|
|
newly created chatrooms have by default those options.
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_muc, [{access, muc_access},
|
|
{access_create, muc_admins},
|
|
{default_room_options, [
|
|
{allow_change_subj, false},
|
|
{allow_query_users, true},
|
|
{allow_private_messages, true},
|
|
{members_by_default, false},
|
|
{title, "New chatroom"},
|
|
{anonymous, false}
|
|
]},
|
|
{access_admin, muc_admins}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{\modmuclog{}}
|
|
\label{modmuclog}
|
|
\ind{modules!\modmuclog{}}
|
|
|
|
This module enables optional logging of Multi-User Chat (MUC) conversations to
|
|
HTML. Once you enable this module, users can join a chatroom using a MUC capable
|
|
Jabber client, and if they have enough privileges, they can request the
|
|
configuration form in which they can set the option to enable chatroom logging.
|
|
|
|
Features:
|
|
\begin{itemize}
|
|
\item Chatroom details are added on top of each page: room title, JID,
|
|
author, subject and configuration.
|
|
\item \ind{protocols!RFC 4622: Internationalized Resource Identifiers (IRIs) and Uniform Resource Identifiers (URIs) for the Extensible Messaging and Presence Protocol (XMPP)}
|
|
Room title and JID are links to join the chatroom (using
|
|
\footahref{http://www.ietf.org/rfc/rfc4622.txt}{XMPP URIs}).
|
|
\item Subject and chatroom configuration changes are tracked and displayed.
|
|
\item Joins, leaves, nick changes, kicks, bans and `/me' are tracked and
|
|
displayed, including the reason if available.
|
|
\item Generated HTML files are XHTML 1.0 Transitional and CSS compliant.
|
|
\item Timestamps are self-referencing links.
|
|
\item Links on top for quicker navigation: Previous day, Next day, Up.
|
|
\item CSS is used for style definition, and a custom CSS file can be used.
|
|
\item URLs on messages and subjects are converted to hyperlinks.
|
|
\item Timezone used on timestamps is shown on the log files.
|
|
\item A custom link can be added on top of each page.
|
|
\end{itemize}
|
|
|
|
Options:
|
|
\begin{description}
|
|
\titem{access\_log}\ind{options!access\_log}
|
|
This option restricts which users are allowed to enable or disable chatroom
|
|
logging. The default value is \term{muc\_admin}. Note for this default setting
|
|
you need to have an access rule for \term{muc\_admin} in order to take effect.
|
|
\titem{cssfile}\ind{options!cssfile}
|
|
With this option you can set whether the HTML files should have a custom CSS
|
|
file or if they need to use the embedded CSS file. Allowed values are
|
|
\term{false} and an URL to a CSS file. With the first value, HTML files will
|
|
include the embedded CSS code. With the latter, you can specify the URL of the
|
|
custom CSS file (for example: `http://example.com/my.css'). The default value
|
|
is \term{false}.
|
|
\titem{dirtype}\ind{options!dirtype}
|
|
The type of the created directories can be specified with this option. Allowed
|
|
values are \term{subdirs} and \term{plain}. With the first value,
|
|
subdirectories are created for each year and month. With the latter, the
|
|
names of the log files contain the full date, and there are no subdirectories.
|
|
The default value is \term{subdirs}.
|
|
\titem{outdir}\ind{options!outdir}
|
|
This option sets the full path to the directory in which the HTML files should
|
|
be stored. Make sure the \ejabberd{} daemon user has write access on that
|
|
directory. The default value is \term{"www/muc"}.
|
|
\titem{timezone}\ind{options!timezone}
|
|
The time zone for the logs is configurable with this option. Allowed values
|
|
are \term{local} and \term{universal}. With the first value, the local time,
|
|
as reported to Erlang by the operating system, will be used. With the latter,
|
|
GMT/UTC time will be used. The default value is \term{local}.
|
|
\titem{spam\_prevention}\ind{options!spam\_prevention}
|
|
To prevent spam, the \term{spam\_prevention} option adds a special attribute
|
|
to links that prevent their indexation by search engines. The default value
|
|
is \term{true}, which mean that nofollow attributes will be added to user
|
|
submitted links.
|
|
\titem{top\_link}\ind{options!top\_link}
|
|
With this option you can customize the link on the top right corner of each
|
|
log file. The syntax of this option is \term{\{"URL", "Text"\}}. The default
|
|
value is \term{\{"/", "Home"\}}.
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item In the first example any chatroom owner can enable logging, and a
|
|
custom CSS file will be used (http://example.com/my.css). Further, the names
|
|
of the log files will contain the full date, and there will be no
|
|
subdirectories. The log files will be stored in /var/www/muclogs, and the
|
|
time zone will be GMT/UTC. Finally, the top link will be
|
|
\verb|<a href="http://www.jabber.ru">Jabber.ru</a>|.
|
|
\begin{verbatim}
|
|
{access, muc, [{allow, all}]}.
|
|
...
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_muc_log, [
|
|
{access_log, muc},
|
|
{cssfile, "http://example.com/my.css"},
|
|
{dirtype, plain},
|
|
{outdir, "/var/www/muclogs"},
|
|
{timezone, universal},
|
|
{spam_prevention, true},
|
|
{top_link, {"http://www.jabber.ru", "Jabber.ru"}}
|
|
]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item In the second example only \jid{admin1@example.org} and
|
|
\jid{admin2@example.net} can enable logging, and the embedded CSS file will be
|
|
used. Further, the names of the log files will only contain the day (number),
|
|
and there will be subdirectories for each year and month. The log files will
|
|
be stored in /var/www/muclogs, and the local time will be used. Finally, the
|
|
top link will be the default \verb|<a href="/">Home</a>|.
|
|
\begin{verbatim}
|
|
{acl, admins, {user, "admin1", "example.org"}}.
|
|
{acl, admins, {user, "admin2", "example.net"}}.
|
|
...
|
|
{access, muc_log, [{allow, admins},
|
|
{deny, all}]}.
|
|
...
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_muc_log, [
|
|
{access_log, muc_log},
|
|
{cssfile, false},
|
|
{dirtype, subdirs},
|
|
{outdir, "/var/www/muclogs"},
|
|
{timezone, local}
|
|
]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{\modoffline{}}
|
|
\label{modoffline}
|
|
\ind{modules!\modoffline{}}
|
|
|
|
This module implements offline message storage. This means that all messages
|
|
sent to an offline user will be stored on the server until that user comes
|
|
online again. Thus it is very similar to how email works. Note that
|
|
\term{ejabberdctl}\ind{ejabberdctl} has a command to delete expired messages
|
|
(see section~\ref{ejabberdctl}).
|
|
|
|
\begin{description}
|
|
\titem{user\_max\_messages}\ind{options!user\_max\_messages}This option
|
|
is use to set a max number of offline messages per user (quota). Its
|
|
value can be either \term{infinity} or a strictly positive
|
|
integer. The default value is \term{infinity}.
|
|
\end{description}
|
|
|
|
|
|
\subsection{\modprivacy{}}
|
|
\label{modprivacy}
|
|
\ind{modules!\modprivacy{}}\ind{Blocking Communication}\ind{Privacy Rules}\ind{protocols!RFC 3921: XMPP IM}
|
|
|
|
This module implements Blocking Communication (also known as Privacy Rules)
|
|
as defined in section 10 from XMPP IM. If end users have support for it in
|
|
their \Jabber{} client, they will be able to:
|
|
\begin{quote}
|
|
\begin{itemize}
|
|
\item Retrieving one's privacy lists.
|
|
\item Adding, removing, and editing one's privacy lists.
|
|
\item Setting, changing, or declining active lists.
|
|
\item Setting, changing, or declining the default list (i.e., the list that
|
|
is active by default).
|
|
\item Allowing or blocking messages based on JID, group, or subscription type
|
|
(or globally).
|
|
\item Allowing or blocking inbound presence notifications based on JID, group,
|
|
or subscription type (or globally).
|
|
\item Allowing or blocking outbound presence notifications based on JID, group,
|
|
or subscription type (or globally).
|
|
\item Allowing or blocking IQ stanzas based on JID, group, or subscription type
|
|
(or globally).
|
|
\item Allowing or blocking all communications based on JID, group, or
|
|
subscription type (or globally).
|
|
\end{itemize}
|
|
(from \ahrefurl{http://www.xmpp.org/specs/rfc3921.html\#privacy})
|
|
\end{quote}
|
|
|
|
Options:
|
|
\begin{description}
|
|
\iqdiscitem{Blocking Communication (\ns{jabber:iq:privacy})}
|
|
\end{description}
|
|
|
|
\subsection{\modprivate{}}
|
|
\label{modprivate}
|
|
\ind{modules!\modprivate{}}\ind{protocols!XEP-0049: Private XML Storage}\ind{protocols!XEP-0048: Bookmark Storage}
|
|
|
|
This module adds support for Private XML Storage (\xepref{0049}):
|
|
\begin{quote}
|
|
Using this method, Jabber entities can store private data on the server and
|
|
retrieve it whenever necessary. The data stored might be anything, as long as
|
|
it is valid XML. One typical usage for this namespace is the server-side storage
|
|
of client-specific preferences; another is Bookmark Storage (\xepref{0048}).
|
|
\end{quote}
|
|
|
|
Options:
|
|
\begin{description}
|
|
\iqdiscitem{Private XML Storage (\ns{jabber:iq:private})}
|
|
\end{description}
|
|
|
|
\subsection{\modproxy{}}
|
|
\label{modproxy}
|
|
\ind{modules!\modversion{}}\ind{protocols!XEP-0065: SOCKS5 Bytestreams}
|
|
|
|
This module implements SOCKS5 Bytestreams (\xepref{0065}).
|
|
It allows \ejabberd{} to act as a file transfer proxy between two
|
|
XMPP clients.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\titem{host}\ind{options!host}This option defines the hostname of the service.
|
|
If this option is not set, the prefix `\jid{proxy.}' is added to \ejabberd{}
|
|
hostname.
|
|
\titem{name}\ind{options!name}Defines Service Discovery name of the service.
|
|
Default is \term{"SOCKS5 Bytestreams"}.
|
|
\titem{ip}\ind{options!ip}This option specifies which network interface
|
|
to listen for. Default is an IP address of the service's DNS name, or,
|
|
if fails, \verb|{127,0,0,1}|.
|
|
\titem{port}\ind{options!port}This option defines port to listen for
|
|
incoming connections. Default is~7777.
|
|
\titem{auth\_type}\ind{options!auth\_type}SOCKS5 authentication type.
|
|
Possible values are \term{anonymous} and \term{plain}. Default is
|
|
\term{anonymous}.
|
|
\titem{access}\ind{options!access}Defines ACL for file transfer initiators.
|
|
Default is \term{all}.
|
|
\titem{max\_connections}\ind{options!max\_connections}Maximum number of
|
|
active connections per file transfer initiator. No limit by default.
|
|
\titem{shaper}\ind{options!shaper}This option defines shaper for
|
|
the file transfer peers. Shaper with the maximum bandwidth will be selected.
|
|
Default is \term{none}.
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item The simpliest configuration of the module:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_proxy65, []},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item More complicated configuration.
|
|
\begin{verbatim}
|
|
{acl, proxy_users, {server, "example.org"}}.
|
|
{access, proxy65_access, [{allow, proxy_users}, {deny, all}]}.
|
|
...
|
|
{acl, admin, {user, "admin", "example.org"}}.
|
|
{shaper, normal, {maxrate, 10240}}. %% 10 Kbytes/sec
|
|
{access, proxy65_shaper, [{none, admin}, {normal, all}]}.
|
|
...
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_proxy65, [{host, "proxy1.example.org"},
|
|
{name, "File Transfer Proxy"},
|
|
{ip, {200,150,100,1}},
|
|
{port, 7778},
|
|
{max_connections, 5},
|
|
{access, proxy65_access},
|
|
{shaper, proxy65_shaper}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{\modpubsub{}}
|
|
\label{modpubsub}
|
|
\ind{modules!\modpubsub{}}\ind{protocols!XEP-0060: Publish-Subscribe}
|
|
|
|
This module offers a Publish-Subscribe Service (\xepref{0060}).
|
|
The functionality in \modpubsub{} can be extended using plugins.
|
|
The plugin that implements PEP (Personal Eventing via Pubsub) (\xepref{0163})
|
|
is enabled by default, and requires \modcaps{}.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\hostitem{pubsub}
|
|
\titem{access\_createnode} \ind{options!access\_createnode}
|
|
This option restricts which users are allowed to create pubsub nodes using
|
|
ACL and ACCESS. The default value is \term{pubsub\_createnode}. % Not clear enough + do not use abbreviations.
|
|
\titem{plugins} To specify which pubsub node plugins to use. If not defined, the default
|
|
pubsub plugin is always used.
|
|
\titem{nodetree} To specify which nodetree to use. If not defined, the default pubsub
|
|
nodetree is used. Nodetrees are default and virtual. Only one nodetree can be used
|
|
and is shared by all node plugins.
|
|
\titem{served\_hosts} \ind{options!served\_hosts}
|
|
This option allows to create additional pubsub virtual hosts in a single module instance.
|
|
\end{description}
|
|
|
|
Example:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_pubsub, [
|
|
{access_createnode, pubsub_createnode},
|
|
{plugins, ["default", "pep"]},
|
|
{served_hosts, ["example.com", "example.org"]}
|
|
]}
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
|
|
\subsection{\modregister{}}
|
|
\label{modregister}
|
|
\ind{modules!\modregister{}}\ind{protocols!XEP-0077: In-Band Registration}\ind{public registration}
|
|
|
|
This module adds support for In-Band Registration (\xepref{0077}). This protocol
|
|
enables end users to use a \Jabber{} client to:
|
|
\begin{itemize}
|
|
\item Register a new account on the server.
|
|
\item Change the password from an existing account on the server.
|
|
\item Delete an existing account on the server.
|
|
\end{itemize}
|
|
|
|
|
|
Options:
|
|
\begin{description}
|
|
\titem{access} \ind{options!access}This option can be configured to specify
|
|
rules to restrict registration. If a rule returns `deny' on the requested
|
|
user name, registration for that user name is denied. (there are no
|
|
restrictions by default).
|
|
\titem{welcome\_message} \ind{options!welcomem}Set a welcome message that
|
|
is sent to each newly registered account. The first string is the subject, and
|
|
the second string is the message body.
|
|
\titem{registration\_watchers} \ind{options!rwatchers}This option defines a
|
|
list of JIDs which will be notified each time a new account is registered.
|
|
\iqdiscitem{In-Band Registration (\ns{jabber:iq:register})}
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item Next example prohibits the registration of too short account names:
|
|
\begin{verbatim}
|
|
{acl, shortname, {user_glob, "?"}}.
|
|
{acl, shortname, {user_glob, "??"}}.
|
|
% The same using regexp:
|
|
%{acl, shortname, {user_regexp, "^..?$"}}.
|
|
...
|
|
{access, register, [{deny, shortname},
|
|
{allow, all}]}.
|
|
...
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_register, [{access, register}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item The in-band registration of new accounts can be prohibited by changing the
|
|
\option{access} option. If you really want to disable all In-Band Registration
|
|
functionality, that is changing passwords in-band and deleting accounts
|
|
in-band, you have to remove \modregister{} from the modules list. In this
|
|
example all In-Band Registration functionality is disabled:
|
|
\begin{verbatim}
|
|
{access, register, [{deny, all}]}.
|
|
|
|
{modules,
|
|
[
|
|
...
|
|
% {mod_register, [{access, register}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item Define the welcome message and three registration watchers:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_register, [
|
|
{welcome_message, {"Welcome!", "Welcome to this Jabber server. For information about Jabber visit http://www.jabber.org"}},
|
|
{registration_watchers, ["admin1@example.org", "admin2@example.org", "boss@example.net"]}
|
|
]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{\modroster{}}
|
|
\label{modroster}
|
|
\ind{modules!\modroster{}}\ind{roster management}\ind{protocols!RFC 3921: XMPP IM}
|
|
|
|
This module implements roster management as defined in \footahref{http://www.xmpp.org/specs/rfc3921.html\#roster}{RFC 3921: XMPP IM}.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\iqdiscitem{Roster Management (\ns{jabber:iq:roster})}
|
|
\end{description}
|
|
|
|
\subsection{\modservicelog{}}
|
|
\label{modservicelog}
|
|
\ind{modules!\modservicelog{}}\ind{message auditing}\ind{Bandersnatch}
|
|
|
|
This module adds support for logging end user packets via a \Jabber{} message
|
|
auditing service such as
|
|
\footahref{http://www.funkypenguin.co.za/bandersnatch/}{Bandersnatch}. All user
|
|
packets are encapsulated in a \verb|<route/>| element and sent to the specified
|
|
service(s).
|
|
|
|
Options:
|
|
\begin{description}
|
|
\titem{loggers} \ind{options!loggers}With this option a (list of) service(s)
|
|
that will receive the packets can be specified.
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item To log all end user packets to the Bandersnatch service running on
|
|
\jid{bandersnatch.example.com}:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_service_log, [{loggers, ["bandersnatch.example.com"]}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item To log all end user packets to the Bandersnatch service running on
|
|
\jid{bandersnatch.example.com} and the backup service on
|
|
\jid{bandersnatch.example.org}:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_service_log, [{loggers, ["bandersnatch.example.com",
|
|
"bandersnatch.example.org"]}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{\modsharedroster{}}
|
|
\label{modsharedroster}
|
|
\ind{modules!\modsharedroster{}}\ind{shared roster groups}
|
|
|
|
This module enables you to create shared roster groups. This means that you can
|
|
create groups of people that can see members from (other) groups in their
|
|
rosters. The big advantages of this feature are that end users do not need to
|
|
manually add all users to their rosters, and that they cannot permanently delete
|
|
users from the shared roster groups.
|
|
A shared roster group can have members from any Jabber server,
|
|
but the presence will only be available from and to members
|
|
of the same virtual host where the group is created.
|
|
|
|
Shared roster groups can be edited \emph{only} via the web interface. Each group
|
|
has a unique identification and the following parameters:
|
|
\begin{description}
|
|
\item[Name] The name of the group, which will be displayed in the roster.
|
|
\item[Description] The description of the group. This parameter does not affect
|
|
anything.
|
|
\item[Members] A list of full JIDs of group members, entered one per line in
|
|
the web interface.
|
|
To put as members all the registered users in the virtual hosts,
|
|
you can use the special directive: @all@.
|
|
Note that this directive is designed for a small server with just a few hundred users.
|
|
\item[Displayed groups] A list of groups that will be in the rosters of this
|
|
group's members.
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item Take the case of a computer club that wants all its members seeing each
|
|
other in their rosters. To achieve this, they need to create a shared roster
|
|
group similar to next table:
|
|
\begin{table}[H]
|
|
\centering
|
|
\begin{tabular}{|l|l|}
|
|
\hline Identification& Group `\texttt{club\_members}'\\
|
|
\hline Name& Club Members\\
|
|
\hline Description& Members from the computer club\\
|
|
\hline Members&
|
|
{\begin{tabular}{l}
|
|
\jid{member1@example.org}\\
|
|
\jid{member2@example.org}\\
|
|
\jid{member3@example.org}
|
|
\end{tabular}
|
|
}\\
|
|
\hline Displayed groups& \texttt{club\_members}\\
|
|
\hline
|
|
\end{tabular}
|
|
\end{table}
|
|
\item In another case we have a company which has three divisions: Management,
|
|
Marketing and Sales. All group members should see all other members in their
|
|
rosters. Additionally, all managers should have all marketing and sales people
|
|
in their roster. Simultaneously, all marketeers and the whole sales team
|
|
should see all managers. This scenario can be achieved by creating shared
|
|
roster groups as shown in the following table:
|
|
\begin{table}[H]
|
|
\centering
|
|
\begin{tabular}{|l|l|l|l|}
|
|
\hline Identification&
|
|
Group `\texttt{management}'&
|
|
Group `\texttt{marketing}'&
|
|
Group `\texttt{sales}'\\
|
|
\hline Name& Management& Marketing& Sales\\
|
|
\hline Description& \\
|
|
Members&
|
|
{\begin{tabular}{l}
|
|
\jid{manager1@example.org}\\
|
|
\jid{manager2@example.org}\\
|
|
\jid{manager3@example.org}\\
|
|
\jid{manager4@example.org}
|
|
\end{tabular}
|
|
}&
|
|
{\begin{tabular}{l}
|
|
\jid{marketeer1@example.org}\\
|
|
\jid{marketeer2@example.org}\\
|
|
\jid{marketeer3@example.org}\\
|
|
\jid{marketeer4@example.org}
|
|
\end{tabular}
|
|
}&
|
|
{\begin{tabular}{l}
|
|
\jid{saleswoman1@example.org}\\
|
|
\jid{salesman1@example.org}\\
|
|
\jid{saleswoman2@example.org}\\
|
|
\jid{salesman2@example.org}
|
|
\end{tabular}
|
|
}\\
|
|
\hline Displayed groups&
|
|
{\begin{tabular}{l}
|
|
\texttt{management}\\
|
|
\texttt{marketing}\\
|
|
\texttt{sales}
|
|
\end{tabular}
|
|
}&
|
|
{\begin{tabular}{l}
|
|
\texttt{management}\\
|
|
\texttt{marketing}
|
|
\end{tabular}
|
|
}&
|
|
{\begin{tabular}{l}
|
|
\texttt{management}\\
|
|
\texttt{sales}
|
|
\end{tabular}
|
|
}\\
|
|
\hline
|
|
\end{tabular}
|
|
\end{table}
|
|
\end{itemize}
|
|
|
|
\subsection{\modstats{}}
|
|
\label{modstats}
|
|
\ind{modules!\modstats{}}\ind{protocols!XEP-0039: Statistics Gathering}\ind{statistics}
|
|
|
|
This module adds support for Statistics Gathering (\xepref{0039}). This protocol
|
|
allows you to retrieve next statistics from your \ejabberd{} deployment:
|
|
\begin{itemize}
|
|
\item Total number of registered users on the current virtual host (users/total).
|
|
\item Total number of registered users on all virtual hosts (users/all-hosts/total).
|
|
\item Total number of online users on the current virtual host (users/online).
|
|
\item Total number of online users on all virtual hosts (users/all-hosts/online).
|
|
\end{itemize}
|
|
|
|
Options:
|
|
\begin{description}
|
|
\iqdiscitem{Statistics Gathering (\ns{http://jabber.org/protocol/stats})}
|
|
\end{description}
|
|
|
|
As there are only a small amount of clients (for \ind{Tkabber}example
|
|
\footahref{http://tkabber.jabber.ru/}{Tkabber}) and software libraries with
|
|
support for this XEP, a few examples are given of the XML you need to send
|
|
in order to get the statistics. Here they are:
|
|
\begin{itemize}
|
|
\item You can request the number of online users on the current virtual host
|
|
(\jid{example.org}) by sending:
|
|
\begin{verbatim}
|
|
<iq to='example.org' type='get'>
|
|
<query xmlns='http://jabber.org/protocol/stats'>
|
|
<stat name='users/online'/>
|
|
</query>
|
|
</iq>
|
|
\end{verbatim}
|
|
\item You can request the total number of registered users on all virtual hosts
|
|
by sending:
|
|
\begin{verbatim}
|
|
<iq to='example.org' type='get'>
|
|
<query xmlns='http://jabber.org/protocol/stats'>
|
|
<stat name='users/all-hosts/total'/>
|
|
</query>
|
|
</iq>
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{\modtime{}}
|
|
\label{modtime}
|
|
\ind{modules!\modtime{}}\ind{protocols!XEP-0090: Entity Time}
|
|
|
|
This module features support for Entity Time (\xepref{0090}). By using this XEP,
|
|
you are able to discover the time at another entity's location.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\iqdiscitem{Entity Time (\ns{jabber:iq:time})}
|
|
\end{description}
|
|
|
|
\subsection{\modvcard{}}
|
|
\label{modvcard}
|
|
\ind{modules!\modvcard{}}\ind{JUD}\ind{Jabber User Directory}\ind{vCard}\ind{protocols!XEP-0054: vcard-temp}
|
|
|
|
This module allows end users to store and retrieve their vCard, and to retrieve
|
|
other users vCards, as defined in vcard-temp (\xepref{0054}). The module also
|
|
implements an uncomplicated \Jabber{} User Directory based on the vCards of
|
|
these users. Moreover, it enables the server to send its vCard when queried.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\hostitem{vjud}
|
|
\iqdiscitem{\ns{vcard-temp}}
|
|
\titem{search}\ind{options!search}This option specifies whether the search
|
|
functionality is enabled (value: \term{true}) or disabled (value:
|
|
\term{false}). If disabled, the option \term{host} will be ignored and the
|
|
\Jabber{} User Directory service will not appear in the Service Discovery item
|
|
list. The default value is \term{true}.
|
|
\titem{matches}\ind{options!matches}With this option, the number of reported
|
|
search results can be limited. If the option's value is set to \term{infinity},
|
|
all search results are reported. The default value is \term{30}.
|
|
\titem{allow\_return\_all}\ind{options!allow\_return\_all}This option enables
|
|
you to specify if search operations with empty input fields should return all
|
|
users who added some information to their vCard. The default value is
|
|
\term{false}.
|
|
\titem{search\_all\_hosts}\ind{options!search\_all\_hosts}If this option is set
|
|
to \term{true}, search operations will apply to all virtual hosts. Otherwise
|
|
only the current host will be searched. The default value is \term{true}.
|
|
\end{description}
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item In this first situation, search results are limited to twenty items,
|
|
every user who added information to their vCard will be listed when people
|
|
do an empty search, and only users from the current host will be returned:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_vcard, [{search, true},
|
|
{matches, 20},
|
|
{allow_return_all, true},
|
|
{search_all_hosts, false}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\item The second situation differs in a way that search results are not limited,
|
|
and that all virtual hosts will be searched instead of only the current one:
|
|
\begin{verbatim}
|
|
{modules,
|
|
[
|
|
...
|
|
{mod_vcard, [{search, true},
|
|
{matches, infinity},
|
|
{allow_return_all, true}]},
|
|
...
|
|
]}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{\modvcardldap{}}
|
|
\label{modvcardldap}
|
|
\ind{modules!\modvcardldap{}}\ind{JUD}\ind{Jabber User Directory}\ind{vCard}\ind{protocols!XEP-0054: vcard-temp}
|
|
|
|
%TODO: verify if the referers to the LDAP section are still correct
|
|
|
|
\ejabberd{} can map LDAP attributes to vCard fields. This behaviour is
|
|
implemented in the \modvcardldap{} module. This module does not depend on the
|
|
authentication method (see~\ref{ldapauth}). The \modvcardldap{} module has
|
|
its own optional parameters. The first group of parameters has the same
|
|
meaning as the top-level LDAP parameters to set the authentication method:
|
|
\option{ldap\_servers}, \option{ldap\_port}, \option{ldap\_rootdn},
|
|
\option{ldap\_password}, \option{ldap\_base}, \option{ldap\_uids}, and
|
|
\option{ldap\_filter}. See section~\ref{ldapauth} for detailed information
|
|
about these options. If one of these options is not set, \ejabberd{} will look
|
|
for the top-level option with the same name. The second group of parameters
|
|
consists of the following \modvcardldap{}-specific options:
|
|
|
|
\begin{description}
|
|
\hostitem{vjud}
|
|
\iqdiscitem{\ns{vcard-temp}}
|
|
\titem{search}\ind{options!search}This option specifies whether the search
|
|
functionality is enabled (value: \term{true}) or disabled (value:
|
|
\term{false}). If disabled, the option \term{host} will be ignored and the
|
|
\Jabber{} User Directory service will not appear in the Service Discovery item
|
|
list. The default value is \term{true}.
|
|
\titem{ldap\_vcard\_map}\ind{options!ldap\_vcard\_map}With this option you can
|
|
set the table that maps LDAP attributes to vCard fields. The format is:
|
|
\term{[{Name\_of\_vCard\_field, Pattern, List\_of\_LDAP\_attributes}, ...]}.\ind{protocols!RFC 2426: vCard MIME Directory Profile}
|
|
\term{Name\_of\_vcard\_field} is the type name of the vCard as defined in
|
|
\footahref{http://www.ietf.org/rfc/rfc2426.txt}{RFC 2426}. \term{Pattern} is a
|
|
string which contains pattern variables \term{"\%u"}, \term{"\%d"} or
|
|
\term{"\%s"}. \term{List\_of\_LDAP\_attributes} is the list containing LDAP
|
|
attributes. The pattern variables \term{"\%s"} will be sequentially replaced
|
|
with the values of LDAP attributes from \term{List\_of\_LDAP\_attributes},
|
|
\term{"\%u"} will be replaced with the user part of a JID, and \term{"\%d"}
|
|
will be replaced with the domain part of a JID. The default is:
|
|
\begin{verbatim}
|
|
[{"NICK", "%u", []},
|
|
{"FN", "%s", ["displayName"]},
|
|
{"LAST", "%s", ["sn"]},
|
|
{"FIRST", "%s", ["givenName"]},
|
|
{"MIDDLE", "%s", ["initials"]},
|
|
{"ORGNAME", "%s", ["o"]},
|
|
{"ORGUNIT", "%s", ["ou"]},
|
|
{"CTRY", "%s", ["c"]},
|
|
{"LOCALITY", "%s", ["l"]},
|
|
{"STREET", "%s", ["street"]},
|
|
{"REGION", "%s", ["st"]},
|
|
{"PCODE", "%s", ["postalCode"]},
|
|
{"TITLE", "%s", ["title"]},
|
|
{"URL", "%s", ["labeleduri"]},
|
|
{"DESC", "%s", ["description"]},
|
|
{"TEL", "%s", ["telephoneNumber"]},
|
|
{"EMAIL", "%s", ["mail"]},
|
|
{"BDAY", "%s", ["birthDay"]},
|
|
{"ROLE", "%s", ["employeeType"]},
|
|
{"PHOTO", "%s", ["jpegPhoto"]}]
|
|
\end{verbatim}
|
|
\titem{ldap\_search\_fields}\ind{options!ldap\_search\_fields}This option
|
|
defines the search form and the LDAP attributes to search within. The format
|
|
is: \term{[{Name, Attribute}, ...]}. \term{Name} is the name of a search form
|
|
field which will be automatically translated by using the translation
|
|
files (see \term{msgs/*.msg} for available words). \term{Attribute} is the
|
|
LDAP attribute or the pattern \term{"\%u"}. The default is:
|
|
\begin{verbatim}
|
|
[{"User", "%u"},
|
|
{"Full Name", "displayName"},
|
|
{"Given Name", "givenName"},
|
|
{"Middle Name", "initials"},
|
|
{"Family Name", "sn"},
|
|
{"Nickname", "%u"},
|
|
{"Birthday", "birthDay"},
|
|
{"Country", "c"},
|
|
{"City", "l"},
|
|
{"Email", "mail"},
|
|
{"Organization Name", "o"},
|
|
{"Organization Unit", "ou"}]
|
|
\end{verbatim}
|
|
\titem{ldap\_search\_reported}\ind{options!ldap\_search\_reported}This option
|
|
defines which search fields should be reported. The format is:
|
|
\term{[{Name, vCard\_Name}, ...]}. \term{Name} is the name of a search form
|
|
field which will be automatically translated by using the translation
|
|
files (see \term{msgs/*.msg} for available words). \term{vCard\_Name} is the
|
|
vCard field name defined in the \option{ldap\_vcard\_map} option. The default
|
|
is:
|
|
\begin{verbatim}
|
|
[{"Full Name", "FN"},
|
|
{"Given Name", "FIRST"},
|
|
{"Middle Name", "MIDDLE"},
|
|
{"Family Name", "LAST"},
|
|
{"Nickname", "NICK"},
|
|
{"Birthday", "BDAY"},
|
|
{"Country", "CTRY"},
|
|
{"City", "LOCALITY"},
|
|
{"Email", "EMAIL"},
|
|
{"Organization Name", "ORGNAME"},
|
|
{"Organization Unit", "ORGUNIT"}]
|
|
\end{verbatim}
|
|
\end{description}
|
|
|
|
%TODO: this examples still should be organised better
|
|
Examples:
|
|
\begin{itemize}
|
|
\item
|
|
|
|
Let's say \term{ldap.example.org} is the name of our LDAP server. We have
|
|
users with their passwords in \term{"ou=Users,dc=example,dc=org"} directory.
|
|
Also we have addressbook, which contains users emails and their additional
|
|
infos in \term{"ou=AddressBook,dc=example,dc=org"} directory. Corresponding
|
|
authentication section should looks like this:
|
|
|
|
\begin{verbatim}
|
|
%% authentication method
|
|
{auth_method, ldap}.
|
|
%% DNS name of our LDAP server
|
|
{ldap_servers, ["ldap.example.org"]}.
|
|
%% We want to authorize users from 'shadowAccount' object class only
|
|
{ldap_filter, "(objectClass=shadowAccount)"}.
|
|
\end{verbatim}
|
|
|
|
Now we want to use users LDAP-info as their vCards. We have four attributes
|
|
defined in our LDAP schema: \term{"mail"} --- email address, \term{"givenName"}
|
|
--- first name, \term{"sn"} --- second name, \term{"birthDay"} --- birthday.
|
|
Also we want users to search each other. Let's see how we can set it up:
|
|
|
|
\begin{verbatim}
|
|
{modules,
|
|
...
|
|
{mod_vcard_ldap,
|
|
[
|
|
%% We use the same server and port, but want to bind anonymously because
|
|
%% our LDAP server accepts anonymous requests to
|
|
%% "ou=AddressBook,dc=example,dc=org" subtree.
|
|
{ldap_rootdn, ""},
|
|
{ldap_password, ""},
|
|
%% define the addressbook's base
|
|
{ldap_base, "ou=AddressBook,dc=example,dc=org"},
|
|
%% uidattr: user's part of JID is located in the "mail" attribute
|
|
%% uidattr_format: common format for our emails
|
|
{ldap_uids, [{"mail","%u@mail.example.org"}]},
|
|
%% We have to define empty filter here, because entries in addressbook does not
|
|
%% belong to shadowAccount object class
|
|
{ldap_filter, ""},
|
|
%% Now we want to define vCard pattern
|
|
{ldap_vcard_map,
|
|
[{"NICK", "%u", []}, % just use user's part of JID as his nickname
|
|
{"FIRST", "%s", ["givenName"]},
|
|
{"LAST", "%s", ["sn"]},
|
|
{"FN", "%s, %s", ["sn", "givenName"]}, % example: "Smith, John"
|
|
{"EMAIL", "%s", ["mail"]},
|
|
{"BDAY", "%s", ["birthDay"]}]},
|
|
%% Search form
|
|
{ldap_search_fields,
|
|
[{"User", "%u"},
|
|
{"Name", "givenName"},
|
|
{"Family Name", "sn"},
|
|
{"Email", "mail"},
|
|
{"Birthday", "birthDay"}]},
|
|
%% vCard fields to be reported
|
|
%% Note that JID is always returned with search results
|
|
{ldap_search_reported,
|
|
[{"Full Name", "FN"},
|
|
{"Nickname", "NICK"},
|
|
{"Birthday", "BDAY"}]}
|
|
]}
|
|
...
|
|
}.
|
|
\end{verbatim}
|
|
|
|
Note that \modvcardldap{} module checks an existence of the user before
|
|
searching his info in LDAP.
|
|
|
|
\item \term{ldap\_vcard\_map} example:
|
|
\begin{verbatim}
|
|
{ldap_vcard_map,
|
|
[{"NICK", "%u", []},
|
|
{"FN", "%s", ["displayName"]},
|
|
{"CTRY", "Russia", []},
|
|
{"EMAIL", "%u@%d", []},
|
|
{"DESC", "%s\n%s", ["title", "description"]}
|
|
]},
|
|
\end{verbatim}
|
|
\item \term{ldap\_search\_fields} example:
|
|
\begin{verbatim}
|
|
{ldap_search_fields,
|
|
[{"User", "uid"},
|
|
{"Full Name", "displayName"},
|
|
{"Email", "mail"}
|
|
]},
|
|
\end{verbatim}
|
|
\item \term{ldap\_search\_reported} example:
|
|
\begin{verbatim}
|
|
{ldap_search_reported,
|
|
[{"Full Name", "FN"},
|
|
{"Email", "EMAIL"},
|
|
{"Birthday", "BDAY"},
|
|
{"Nickname", "NICK"}
|
|
]},
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
\subsection{\modversion{}}
|
|
\label{modversion}
|
|
\ind{modules!\modversion{}}\ind{protocols!XEP-0092: Software Version}
|
|
|
|
This module implements Software Version (\xepref{0092}). Consequently, it
|
|
answers \ejabberd{}'s version when queried.
|
|
|
|
Options:
|
|
\begin{description}
|
|
\titem{show\_os}\ind{options!showos}Should the operating system be revealed or not.
|
|
The default value is \term{true}.
|
|
\iqdiscitem{Software Version (\ns{jabber:iq:version})}
|
|
\end{description}
|
|
|
|
\chapter{Managing an ejabberd server}
|
|
|
|
|
|
\section{\term{ejabberdctl}}
|
|
\label{ejabberdctl}
|
|
|
|
\subsection{Commands}
|
|
\label{commands}
|
|
|
|
The \term{ejabberdctl} command line script allows to start, stop and perform
|
|
many other administrative tasks in a local or remote ejabberd server.
|
|
|
|
When \term{ejabberdctl} is executed without any parameter,
|
|
it displays the available options. If there isn't an ejabberd server running,
|
|
the available parameters are:
|
|
\begin{description}
|
|
\titem{start} Start ejabberd in background mode. This is the default method.
|
|
\titem{debug} Attach an Erlang shell to an already existing ejabberd server. This allows to execute commands interactively in the ejabberd server.
|
|
\titem{live} Start ejabberd in live mode: the shell keeps attached to the started server, showing log messages and allowing to execute interactive commands.
|
|
\end{description}
|
|
|
|
If there is an ejabberd server running in the system,
|
|
\term{ejabberdctl} shows all the available commands in that server.
|
|
The more interesting ones are:
|
|
\begin{description}
|
|
\titem{status} Check the status of the ejabberd server.
|
|
\titem{stop} Stop the ejabberd server which is running in the machine.
|
|
\titem{reopen-log} If you use a tool to rotate logs, you have to configure it
|
|
so that this command is executed after each rotation.
|
|
\titem {backup, restore, install-fallback, dump, load} You can use these
|
|
commands to create and restore backups.
|
|
%%More information about backuping can
|
|
%% be found in section~\ref{backup}.
|
|
\titem{import-file, import-dir} \ind{migration from other software}
|
|
These options can be used to migrate from other \Jabber{}/XMPP servers. There
|
|
exist tutorials to \footahref{http://www.ejabberd.im/migrate-to-ejabberd}{migrate from other software to ejabberd}.
|
|
\titem{delete-expired-messages} This option can be used to delete old messages
|
|
in offline storage. This might be useful when the number of offline messages
|
|
is very high.
|
|
\end{description}
|
|
|
|
The \term{ejabberdctl} script also allows the argument \term{--node NODENAME}.
|
|
This allows to administer a remote node.
|
|
|
|
The \term{ejabberdctl} administration script can be configured in the file ejabberdctl.cfg.
|
|
This file provides detailed information about each configurable option.
|
|
|
|
|
|
\subsection{Erlang configuration}
|
|
\label{erlangconfiguration}
|
|
|
|
The basic parameters used by \term{ejabberdctl} when starting the Erlang node:
|
|
\begin{description}
|
|
\titem{-sname ejabberd}
|
|
The Erlang node will be identified using only the first part
|
|
of the host name, i.\,e. other Erlang nodes outside this domain cannot contact
|
|
this node. This is the preferable option in most cases.
|
|
\titem{-name ejabberd}
|
|
The Erlang node will be fully identified.
|
|
This is only useful if you plan to setup an ejabberd cluster with nodes in different networks.
|
|
\titem{-kernel inetrc "/etc/ejabberd/ejabberd.inetrc"}
|
|
Indicates which IP name resolution to use. It is required if using \term{-sname}.
|
|
\titem{-detached}
|
|
Starts the Erlang system detached from the system console.
|
|
Useful for running daemons and backgrounds processes.
|
|
\titem{-noinput}
|
|
Ensures that the Erlang system never tries to read any input.
|
|
Useful for running daemons and backgrounds processes.
|
|
\titem{-pa /var/lib/ejabberd/ebin}
|
|
Specify the directory where Erlang binary files (*.beam) are located.
|
|
\titem{-s ejabberd}
|
|
Tell Erlang runtime system to start the ejabberd application.
|
|
\titem{-mnesia dir "/var/lib/ejabberd/db/nodename"}
|
|
Specify the Mnesia database directory.
|
|
\titem{-sasl sasl\_error\_logger \{file, "/var/log/ejabberd/sasl.log"\}}
|
|
Specify the directory for the sasl.log file.
|
|
\end{description}
|
|
Note that some characters need to be escaped when used in shell scripts, for instance \verb|"| and \verb|{}|.
|
|
You can find other options in the Erlang manual page (\shell{erl -man erl}).
|
|
|
|
In addition, there are several configurable parameters
|
|
in the file \term{/etc/ejabberd/ejabberdctl.cfg}
|
|
to fine tune the Erlang runtime system.
|
|
|
|
|
|
\section{Web Interface}
|
|
\label{webinterface}
|
|
\ind{web interface}
|
|
|
|
To perform online configuration of \ejabberd{} you need to enable the
|
|
\term{ejabberd\_http} listener with the option \term{web\_admin} (see
|
|
section~\ref{listened}). Then you can open
|
|
\verb|http://server:port/admin/| in your favourite web browser. You
|
|
will be asked to enter the username (the \emph{full} \Jabber{} ID) and password
|
|
of an \ejabberd{} user with administrator rights. After authentication
|
|
you will see a page similar to figure~\ref{fig:webadmmain}.
|
|
|
|
\begin{figure}[htbp]
|
|
\centering
|
|
\insimg{webadmmain.png}
|
|
\caption{Top page from the web interface}
|
|
\label{fig:webadmmain}
|
|
\end{figure}
|
|
Here you can edit access restrictions, manage users, create backups,
|
|
manage the database, enable/disable ports listened for, view server
|
|
statistics,\ldots
|
|
|
|
Examples:
|
|
\begin{itemize}
|
|
\item You can serve the web interface on the same port as the
|
|
\ind{protocols!XEP-0025: HTTP Polling}HTTP Polling interface. In this example
|
|
you should point your web browser to \verb|http://example.org:5280/admin/| to
|
|
administer all virtual hosts or to
|
|
\verb|http://example.org:5280/admin/server/example.com/| to administer only
|
|
the virtual host \jid{example.com}. Before you get access to the web interface
|
|
you need to enter as username, the JID and password from a registered user
|
|
that is allowed to configure \ejabberd{}. In this example you can enter as
|
|
username `\jid{admin@example.net}' to administer all virtual hosts (first
|
|
URL). If you log in with `\jid{admin@example.com}' on \\
|
|
\verb|http://example.org:5280/admin/server/example.com/| you can only
|
|
administer the virtual host \jid{example.com}.
|
|
\begin{verbatim}
|
|
...
|
|
{acl, admins, {user, "admin", "example.net"}}.
|
|
{host_config, "example.com", [{acl, admins, {user, "admin", "example.com"}}]}.
|
|
{access, configure, [{allow, admins}]}.
|
|
...
|
|
{hosts, ["example.org"]}.
|
|
...
|
|
{listen,
|
|
[...
|
|
{5280, ejabberd_http, [http_poll, web_admin]},
|
|
...
|
|
]
|
|
}.
|
|
\end{verbatim}
|
|
\item For security reasons, you can serve the web interface on a secured
|
|
connection, on a port differing from the HTTP Polling interface, and bind it
|
|
to the internal LAN IP. The web interface will be accessible by pointing your
|
|
web browser to \verb|https://192.168.1.1:5280/admin/|:
|
|
\begin{verbatim}
|
|
...
|
|
{hosts, ["example.org"]}.
|
|
...
|
|
{listen,
|
|
[...
|
|
{5270, ejabberd_http, [http_poll]},
|
|
{5280, ejabberd_http, [web_admin, {ip, {192, 168, 1, 1}},
|
|
tls, {certfile, "/usr/local/etc/server.pem"}]},
|
|
...
|
|
]
|
|
}.
|
|
\end{verbatim}
|
|
\end{itemize}
|
|
|
|
|
|
\section{Ad-hoc Commands}
|
|
\label{adhoccommands}
|
|
|
|
If you enable \modconfigure\ and \modadhoc,
|
|
you can perform several administrative tasks in ejabberd
|
|
with a Jabber client.
|
|
The client must support Ad-Hoc Commands (\xepref{0050}),
|
|
and you must login in the Jabber server with
|
|
an account with proper privileges.
|
|
|
|
|
|
\section{Change Computer Hostname}
|
|
\label{changeerlangnodename}
|
|
|
|
ejabberd uses the distributed Mnesia database.
|
|
Being distributed, Mnesia enforces consistency of its file,
|
|
so it stores the name of the Erlang node in it.
|
|
The name of an Erlang node includes the hostname of the computer.
|
|
So, the name of the Erlang node changes
|
|
if you change the name of the machine in which ejabberd runs,
|
|
or when you move ejabberd to a different machine.
|
|
|
|
So, if you want to change the computer hostname where ejabberd is installed,
|
|
you must follow these instructions:
|
|
\begin{enumerate}
|
|
\item In the old server, backup the Mnesia database using the Web Interface or \term{ejabberdctl}.
|
|
For example:
|
|
\begin{verbatim}
|
|
ejabberdctl backup /tmp/ejabberd-oldhost.backup
|
|
\end{verbatim}
|
|
\item In the new server, restore the backup file using the Web Interface or \term{ejabberdctl}.
|
|
For example:
|
|
\begin{verbatim}
|
|
ejabberdctl restore /tmp/ejabberd-oldhost.backup
|
|
\end{verbatim}
|
|
\end{enumerate}
|
|
|
|
|
|
\chapter{Securing ejabberd}
|
|
\section{Firewall Settings}
|
|
\label{firewall}
|
|
\ind{firewall}\ind{ports}\ind{SASL}\ind{TLS}\ind{clustering!ports}
|
|
|
|
You need to take the following TCP ports in mind when configuring your firewall:
|
|
\begin{table}[H]
|
|
\centering
|
|
\begin{tabular}{|l|l|}
|
|
\hline Port& Description\\
|
|
\hline \hline 5222& Standard port for Jabber/XMPP client connections, plain or STARTTLS.\\
|
|
\hline 5223& Standard port for Jabber client connections using the old SSL method.\\
|
|
\hline 5269& Standard port for Jabber/XMPP server connections.\\
|
|
\hline 4369& Port used by EPMD for communication between Erlang nodes.\\
|
|
\hline port range& Used for connections between Erlang nodes. This range is configurable.\\
|
|
\hline
|
|
\end{tabular}
|
|
\end{table}
|
|
|
|
\section{epmd }
|
|
\label{epmd}
|
|
|
|
\footahref{http://www.erlang.org/doc/man/epmd.html}{epmd (Erlang Port Mapper Daemon)}
|
|
is a small name server included in Erlang/OTP
|
|
and used by Erlang programs when establishing distributed Erlang communications.
|
|
ejabberd needs \term{epmd} to use \term{ejabberdctl} and also when clustering ejabberd nodes.
|
|
This small program is automatically started by Erlang, and is never stopped.
|
|
If ejabberd is stopped, and there aren't any other Erlang programs
|
|
running in the system, you can safely stop \term{epmd} if you want.
|
|
|
|
ejabberd runs inside an Erlang node.
|
|
To communicate with ejabberd, the script \term{ejabberdctl} starts a new Erlang node
|
|
and connects to the Erlang node that holds ejabberd.
|
|
In order for this communication to work,
|
|
\term{epmd} must be running and listening for name requests in the port 4369.
|
|
You should block the port 4369 in the firewall,
|
|
so only the programs in your machine can access it.
|
|
|
|
If you build a cluster of several ejabberd instances,
|
|
each ejabberd instance is called an ejabberd node.
|
|
Those ejabberd nodes use a special Erlang communication method to
|
|
build the cluster, and EPMD is again needed listening in the port 4369.
|
|
So, if you plan to build a cluster of ejabberd nodes
|
|
you must open the port 4369 for the machines involved in the cluster.
|
|
Remember to block the port so Internet doesn't have access to it.
|
|
|
|
Once an Erlang node solved the node name of another Erlang node using EPMD and port 4369,
|
|
the nodes communicate directly.
|
|
The ports used in this case are random.
|
|
You can limit the range of ports when starting Erlang with a command-line parameter, for example:
|
|
\begin{verbatim}
|
|
erl ... -kernel inet_dist_listen_min 4370 inet_dist_listen_max 4375
|
|
\end{verbatim}
|
|
|
|
|
|
\section{Erlang Cookie}
|
|
\label{cookie}
|
|
|
|
The Erlang cookie is a string with numbers and letters.
|
|
An Erlang node reads the cookie at startup from the command-line parameter \term{-setcookie}
|
|
or from a cookie file.
|
|
Two Erlang nodes communicate only if they have the same cookie.
|
|
Setting a cookie on the Erlang node allows you to structure your Erlang network
|
|
and define which nodes are allowed to connect to which.
|
|
|
|
Thanks to Erlang cookies, you can prevent access to the Erlang node by mistake,
|
|
for example when there are several Erlang nodes running different programs in the same machine.
|
|
|
|
Setting a secret cookie is a simple method
|
|
to difficult unauthorized access to your Erlang node.
|
|
However, the cookie system is not ultimately effective
|
|
to prevent unauthorized access or intrusion to an Erlang node.
|
|
The communication between Erlang nodes are not encrypted,
|
|
so the cookie could be read sniffing the traffic on the network.
|
|
The recommended way to secure the Erlang node is to block the port 4369.
|
|
|
|
|
|
\section{Erlang node name}
|
|
\label{nodename}
|
|
|
|
An Erlang node may have a node name.
|
|
The name can be short (if indicated with the command-line parameter \term{-sname})
|
|
or long (if indicated with the parameter \term{-name}).
|
|
Starting an Erlang node with -sname limits the communication between Erlang nodes to the LAN.
|
|
|
|
Using the option \term{-sname} instead of \term{-name} is a simple method
|
|
to difficult unauthorized access to your Erlang node.
|
|
However, it is not ultimately effective to prevent access to the Erlang node,
|
|
because it may be possible to fake the fact that you are on another network
|
|
using a modified version of Erlang \term{epmd}.
|
|
The recommended way to secure the Erlang node is to block the port 4369.
|
|
|
|
|
|
\chapter{Clustering}
|
|
\label{clustering}
|
|
\ind{clustering}
|
|
|
|
\section{How it Works}
|
|
\label{howitworks}
|
|
\ind{clustering!how it works}
|
|
|
|
A \Jabber{} domain is served by one or more \ejabberd{} nodes. These nodes can
|
|
be run on different machines that are connected via a network. They all
|
|
must have the ability to connect to port 4369 of all another nodes, and must
|
|
have the same magic cookie (see Erlang/OTP documentation, in other words the
|
|
file \term{\~{}ejabberd/.erlang.cookie} must be the same on all nodes). This is
|
|
needed because all nodes exchange information about connected users, s2s
|
|
connections, registered services, etc\ldots
|
|
|
|
Each \ejabberd{} node has the following modules:
|
|
\begin{itemize}
|
|
\item router,
|
|
\item local router,
|
|
\item session manager,
|
|
\item s2s manager.
|
|
\end{itemize}
|
|
|
|
\subsection{Router}
|
|
\label{router}
|
|
\ind{clustering!router}
|
|
|
|
This module is the main router of \Jabber{} packets on each node. It
|
|
routes them based on their destination's domains. It uses a global
|
|
routing table. The domain of the packet's destination is searched in the
|
|
routing table, and if it is found, the packet is routed to the
|
|
appropriate process. If not, it is sent to the s2s manager.
|
|
|
|
\subsection{Local Router}
|
|
\label{localrouter}
|
|
\ind{clustering!local router}
|
|
|
|
This module routes packets which have a destination domain equal to
|
|
one of this server's host names. If the destination JID has a non-empty user
|
|
part, it is routed to the session manager, otherwise it is processed depending
|
|
on its content.
|
|
|
|
\subsection{Session Manager}
|
|
\label{sessionmanager}
|
|
\ind{clustering!session manager}
|
|
|
|
This module routes packets to local users. It looks up to which user
|
|
resource a packet must be sent via a presence table. Then the packet is
|
|
either routed to the appropriate c2s process, or stored in offline
|
|
storage, or bounced back.
|
|
|
|
\subsection{s2s Manager}
|
|
\label{s2smanager}
|
|
\ind{clustering!s2s manager}
|
|
|
|
This module routes packets to other \Jabber{} servers. First, it
|
|
checks if an opened s2s connection from the domain of the packet's
|
|
source to the domain of the packet's destination exists. If that is the case,
|
|
the s2s manager routes the packet to the process
|
|
serving this connection, otherwise a new connection is opened.
|
|
|
|
\section{Clustering Setup}
|
|
\label{cluster}
|
|
\ind{clustering!setup}
|
|
|
|
Suppose you already configured \ejabberd{} on one machine named (\term{first}),
|
|
and you need to setup another one to make an \ejabberd{} cluster. Then do
|
|
following steps:
|
|
|
|
\begin{enumerate}
|
|
\item Copy \verb|~ejabberd/.erlang.cookie| file from \term{first} to
|
|
\term{second}.
|
|
|
|
(alt) You can also add `\verb|-cookie content_of_.erlang.cookie|'
|
|
option to all `\shell{erl}' commands below.
|
|
|
|
\item On \term{second} run the following command as the \ejabberd{} daemon user,
|
|
in the working directory of \ejabberd{}:
|
|
|
|
\begin{verbatim}
|
|
erl -sname ejabberd \
|
|
-mnesia extra_db_nodes "['ejabberd@first']" \
|
|
-s mnesia
|
|
\end{verbatim}
|
|
|
|
This will start Mnesia serving the same database as \node{ejabberd@first}.
|
|
You can check this by running the command `\verb|mnesia:info().|'. You
|
|
should see a lot of remote tables and a line like the following:
|
|
|
|
\begin{verbatim}
|
|
running db nodes = [ejabberd@first, ejabberd@second]
|
|
\end{verbatim}
|
|
|
|
|
|
\item Now run the following in the same `\shell{erl}' session:
|
|
|
|
\begin{verbatim}
|
|
mnesia:change_table_copy_type(schema, node(), disc_copies).
|
|
\end{verbatim}
|
|
|
|
This will create local disc storage for the database.
|
|
|
|
(alt) Change storage type of the \term{scheme} table to `RAM and disc
|
|
copy' on the second node via the web interface.
|
|
|
|
|
|
\item Now you can add replicas of various tables to this node with
|
|
`\verb|mnesia:add_table_copy|' or
|
|
`\verb|mnesia:change_table_copy_type|' as above (just replace
|
|
`\verb|schema|' with another table name and `\verb|disc_copies|'
|
|
can be replaced with `\verb|ram_copies|' or
|
|
`\verb|disc_only_copies|').
|
|
|
|
Which tables to replicate is very dependant on your needs, you can get
|
|
some hints from the command `\verb|mnesia:info().|', by looking at the
|
|
size of tables and the default storage type for each table on 'first'.
|
|
|
|
Replicating a table makes lookups in this table faster on this node.
|
|
Writing, on the other hand, will be slower. And of course if machine with one
|
|
of the replicas is down, other replicas will be used.
|
|
|
|
Also \footahref{http://www.erlang.se/doc/doc-5.4.9/lib/mnesia-4.2.2/doc/html/Mnesia\_chap5.html\#5.3}
|
|
{section 5.3 (Table Fragmentation) of Mnesia User's Guide} can be helpful.
|
|
% The above URL needs update every Erlang release!
|
|
|
|
(alt) Same as in previous item, but for other tables.
|
|
|
|
|
|
\item Run `\verb|init:stop().|' or just `\verb|q().|' to exit from
|
|
the Erlang shell. This probably can take some time if Mnesia has not yet
|
|
transfered and processed all data it needed from \term{first}.
|
|
|
|
|
|
\item Now run \ejabberd{} on \term{second} with almost the same config as
|
|
on \term{first} (you probably do not need to duplicate `\verb|acl|'
|
|
and `\verb|access|' options --- they will be taken from
|
|
\term{first}, and \verb|mod_muc| and \verb|mod_irc| should be
|
|
enabled only on one machine in the cluster).
|
|
\end{enumerate}
|
|
|
|
You can repeat these steps for other machines supposed to serve this
|
|
domain.
|
|
|
|
\section{Service Load-Balancing}
|
|
\subsection{Components Load-Balancing}
|
|
\label{componentlb}
|
|
\ind{component load-balancing}
|
|
|
|
\subsection{Domain Load-Balancing Algorithm}
|
|
\label{domainlb}
|
|
\ind{options!domain\_balancing}
|
|
|
|
\ejabberd{} includes an algorithm to load balance the components that are plugged on an ejabberd cluster. It means that you can plug one or several instances of the same component on each ejabberd cluster and that the traffic will be automatically distributed.
|
|
|
|
The default distribution algorithm try to deliver to a local instance of a component. If several local instances are available, one instance is chosen randomly. If no instance is available locally, one instance is chosen randomly among the remote component instances.
|
|
|
|
If you need a different behaviour, you can change the load balancing behaviour with the option \option{domain\_balancing}. The syntax of the option is the following:
|
|
|
|
\begin{verbatim}
|
|
{domain_balancing, "component.example.com", <balancing_criterium>}.
|
|
\end{verbatim}
|
|
|
|
Several balancing criteria are available:
|
|
\begin{itemize}
|
|
\item \term{destination}: the full JID of the packet \term{to} attribute is used.
|
|
\item \term{source}: the full JID of the packet \term{from} attribute is used.
|
|
\item \term{bare\_destination}: the bare JID (without resource) of the packet \term{to} attribute is used.
|
|
\item \term{bare\_source}: the bare JID (without resource) of the packet \term{from} attribute is used.
|
|
\end{itemize}
|
|
|
|
If the value corresponding to the criteria is the same, the same component instance in the cluster will be used.
|
|
|
|
\subsection{Load-Balancing Buckets}
|
|
\label{lbbuckets}
|
|
\ind{options!domain\_balancing\_component\_number}
|
|
|
|
When there is a risk of failure for a given component, domain balancing can cause service trouble. If one component is failing the service will not work correctly unless the sessions are rebalanced.
|
|
|
|
In this case, it is best to limit the problem to the sessions handled by the failing component. This is what the \term{domain\_balancing\_component\_number} option does, making the load balancing algorithm not dynamic, but sticky on a fix number of component instances.
|
|
|
|
The syntax is the following:
|
|
\begin{verbatim}
|
|
{domain_balancing_component_number, "component.example.com", N}
|
|
\end{verbatim}
|
|
|
|
|
|
|
|
% TODO
|
|
% See also the section about ejabberdctl!!!!
|
|
%\section{Backup and Restore}
|
|
%\label{backup}
|
|
%\ind{backup}
|
|
|
|
\chapter{Debugging}
|
|
\label{debugging}
|
|
\ind{debugging}
|
|
|
|
\section{Watchdog Alerts}
|
|
\label{watchdog}
|
|
\ind{debugging!watchdog}
|
|
|
|
ejabberd includes a watchdog mechanism.
|
|
If a process in the ejabberd server consumes too much memory,
|
|
a message is sent to the Jabber accounts defined with the option
|
|
\term{watchdog\_admins}
|
|
\ind{options!watchdog\_admins} in the ejabberd configuration file.
|
|
Example configuration:
|
|
\begin{verbatim}
|
|
{watchdog_admins, ["admin2@localhost", "admin2@example.org"]}.
|
|
\end{verbatim}
|
|
|
|
|
|
\section{Log Files}
|
|
\label{logfiles}
|
|
|
|
ejabberd writes messages in two log files:
|
|
\begin{description}
|
|
\titem{ejabberd.log} Messages reported by ejabberd code
|
|
\titem{sasl.log} Messages reported by Erlang/OTP using SASL (System Architecture Support Libraries)
|
|
\end{description}
|
|
|
|
The option \term{loglevel} modifies the verbosity of the file ejabberd.log.
|
|
There possible levels are:
|
|
\begin{description}
|
|
\titem{0} No ejabberd log at all (not recommended)
|
|
\titem{1} Critical
|
|
\titem{2} Error
|
|
\titem{3} Warning
|
|
\titem{4} Info
|
|
\titem{5} Debug
|
|
\end{description}
|
|
For example, the default configuration is:
|
|
\begin{verbatim}
|
|
{loglevel, 4}.
|
|
\end{verbatim}
|
|
|
|
|
|
\section{Debug Console}
|
|
\label{debugconsole}
|
|
|
|
The Debug Console is an Erlang shell attached to an already running ejabberd server.
|
|
With this Erlang shell, an experienced administrator can perform complex tasks.
|
|
|
|
This shell gives complete control over the ejabberd server,
|
|
so it is important to use it with extremely care.
|
|
There are some simple and safe examples in the article
|
|
\footahref{http://www.ejabberd.im/interconnect-erl-nodes}{Interconnecting Erlang Nodes}
|
|
|
|
To exit the shell, close the window or press the keys: control+c control+c.
|
|
|
|
|
|
\appendix{}
|
|
\chapter{Internationalization and Localization}
|
|
\label{i18nl10n}
|
|
\ind{xml:lang}\ind{internationalization}\ind{localization}\ind{i18n}\ind{l10n}
|
|
|
|
All built-in modules support the \texttt{xml:lang} attribute inside IQ queries.
|
|
Figure~\ref{fig:discorus}, for example, shows the reply to the following query:
|
|
\begin{verbatim}
|
|
<iq id='5'
|
|
to='example.org'
|
|
type='get'
|
|
xml:lang='ru'>
|
|
<query xmlns='http://jabber.org/protocol/disco#items'/>
|
|
</iq>
|
|
\end{verbatim}
|
|
|
|
\begin{figure}[htbp]
|
|
\centering
|
|
\insimg{discorus.png}
|
|
\caption{Service Discovery when \texttt{xml:lang='ru'}}
|
|
\label{fig:discorus}
|
|
\end{figure}
|
|
|
|
The web interface also supports the \verb|Accept-Language| HTTP header (compare
|
|
figure~\ref{fig:webadmmainru} with figure~\ref{fig:webadmmain})
|
|
|
|
\begin{figure}[htbp]
|
|
\centering
|
|
\insimg{webadmmainru.png}
|
|
\caption{Top page from the web interface with HTTP header
|
|
`Accept-Language: ru'}
|
|
\label{fig:webadmmainru}
|
|
\end{figure}
|
|
|
|
|
|
%\section{Ultra Complex Example}
|
|
%\label{ultracomplexexample}
|
|
%TODO: a very big example covering the whole guide, with a good explanation before the example: different authenticaton mechanisms, transports, ACLs, multple virtual hosts, virtual host specific settings and general settings, modules,...
|
|
|
|
\chapter{Release Notes}
|
|
\label{releasenotes}
|
|
\ind{release notes}
|
|
|
|
Release notes are available from \footahref{http://www.process-one.net/en/ejabberd/release\_notes/}{ejabberd Home Page}
|
|
|
|
\chapter{Acknowledgements}
|
|
\label{acknowledgements}
|
|
Thanks to all people who contributed to this guide:
|
|
\begin{itemize}
|
|
\item Alexey Shchepin (\ahrefurl{xmpp:aleksey@jabber.ru})
|
|
\item Badlop (\ahrefurl{xmpp:badlop@jabberes.org})
|
|
\item Evgeniy Khramtsov (\ahrefurl{xmpp:xram@jabber.ru})
|
|
\item Florian Zumbiehl (\ahrefurl{xmpp:florz@florz.de})
|
|
\item Michael Grigutsch (\ahrefurl{xmpp:migri@jabber.i-pobox.net})
|
|
\item Mickael Remond (\ahrefurl{xmpp:mremond@erlang-projects.org})
|
|
\item Sander Devrieze (\ahrefurl{xmpp:sander@devrieze.dyndns.org})
|
|
\item Sergei Golovan (\ahrefurl{xmpp:sgolovan@nes.ru})
|
|
\item Vsevolod Pelipas (\ahrefurl{xmpp:vsevoload@jabber.ru})
|
|
\end{itemize}
|
|
|
|
|
|
\chapter{Copyright Information}
|
|
\label{copyright}
|
|
|
|
Ejabberd Installation and Operation Guide.\\
|
|
Copyright \copyright{} 2003 --- 2007 Process-one
|
|
|
|
This document is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This document is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
this document; if not, write to the Free Software Foundation, Inc., 51 Franklin
|
|
Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
%TODO: a glossary describing common terms
|
|
%\section{Glossary}}
|
|
%\label{glossary}
|
|
%\ind{glossary}
|
|
|
|
%\begin{description}
|
|
%\titem{c2s}
|
|
%\titem{s2s}
|
|
%\titem{STARTTLS}
|
|
%\titem{XEP} (\XMPP{} Extension Protocol)
|
|
%\titem{Resource}
|
|
%\titem{Roster}
|
|
%\titem{Transport}
|
|
%\titem{JID} (\Jabber{} ID) <Wikipedia>
|
|
%\titem{JUD} (\Jabber{} User Directory)
|
|
%\titem{vCard} <Wikipedia>
|
|
%\titem{Publish-Subscribe}
|
|
%\titem{Namespace}
|
|
%\titem{Erlang} <Wikipedia>
|
|
%\titem{Fault-tolerant}
|
|
%\titem{Distributed} <Wikipedia>
|
|
%\titem{Node} <Wikipedia>
|
|
%\titem{Tuple} <Wikipedia>
|
|
%\titem{Regular Expression}
|
|
%\titem{ACL} (Access Control List) <Wikipedia>
|
|
%\titem{IPv6} <Wikipedia>
|
|
%\titem{Jabber}
|
|
%\titem{LDAP} (Lightweight Directory Access Protocol) <Wikipedia>
|
|
%\titem{ODBC} (Open Database Connectivity) <Wikipedia>
|
|
%\titem{Virtual Hosting} <Wikipedia>
|
|
|
|
%\end{description}
|
|
|
|
|
|
|
|
% Remove the index from the HTML version to save size and bandwith.
|
|
\begin{latexonly}
|
|
\printindex
|
|
\end{latexonly}
|
|
|
|
\end{document}
|