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88 lines
4.5 KiB
XML
88 lines
4.5 KiB
XML
<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="module-services-prosody">
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<title>Prosody</title>
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<para>
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<link xlink:href="https://prosody.im/">Prosody</link> is an open-source, modern XMPP server.
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</para>
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<section xml:id="module-services-prosody-basic-usage">
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<title>Basic usage</title>
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<para>
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A common struggle for most XMPP newcomers is to find the right set
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of XMPP Extensions (XEPs) to setup. Forget to activate a few of
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those and your XMPP experience might turn into a nightmare!
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</para>
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<para>
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The XMPP community tackles this problem by creating a meta-XEP
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listing a decent set of XEPs you should implement. This meta-XEP
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is issued every year, the 2020 edition being
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<link xlink:href="https://xmpp.org/extensions/xep-0423.html">XEP-0423</link>.
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</para>
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<para>
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The NixOS Prosody module will implement most of these recommendend XEPs out of
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the box. That being said, two components still require some
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manual configuration: the
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<link xlink:href="https://xmpp.org/extensions/xep-0045.html">Multi User Chat (MUC)</link>
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and the <link xlink:href="https://xmpp.org/extensions/xep-0363.html">HTTP File Upload</link> ones.
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You'll need to create a DNS subdomain for each of those. The current convention is to name your
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MUC endpoint <literal>conference.example.org</literal> and your HTTP upload domain <literal>upload.example.org</literal>.
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</para>
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<para>
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A good configuration to start with, including a
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<link xlink:href="https://xmpp.org/extensions/xep-0045.html">Multi User Chat (MUC)</link>
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endpoint as well as a <link xlink:href="https://xmpp.org/extensions/xep-0363.html">HTTP File Upload</link>
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endpoint will look like this:
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<programlisting>
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services.prosody = {
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<link linkend="opt-services.prosody.enable">enable</link> = true;
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<link linkend="opt-services.prosody.admins">admins</link> = [ "root@example.org" ];
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<link linkend="opt-services.prosody.ssl.cert">ssl.cert</link> = "/var/lib/acme/example.org/fullchain.pem";
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<link linkend="opt-services.prosody.ssl.key">ssl.key</link> = "/var/lib/acme/example.org/key.pem";
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<link linkend="opt-services.prosody.virtualHosts">virtualHosts</link>."example.org" = {
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<link linkend="opt-services.prosody.virtualHosts._name_.enabled">enabled</link> = true;
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<link linkend="opt-services.prosody.virtualHosts._name_.domain">domain</link> = "example.org";
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<link linkend="opt-services.prosody.virtualHosts._name_.ssl.cert">ssl.cert</link> = "/var/lib/acme/example.org/fullchain.pem";
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<link linkend="opt-services.prosody.virtualHosts._name_.ssl.key">ssl.key</link> = "/var/lib/acme/example.org/key.pem";
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};
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<link linkend="opt-services.prosody.muc">muc</link> = [ {
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<link linkend="opt-services.prosody.muc">domain</link> = "conference.example.org";
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} ];
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<link linkend="opt-services.prosody.uploadHttp">uploadHttp</link> = {
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<link linkend="opt-services.prosody.uploadHttp.domain">domain</link> = "upload.example.org";
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};
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};</programlisting>
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</para>
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</section>
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<section xml:id="module-services-prosody-letsencrypt">
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<title>Let's Encrypt Configuration</title>
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<para>
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As you can see in the code snippet from the
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<link linkend="module-services-prosody-basic-usage">previous section</link>,
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you'll need a single TLS certificate covering your main endpoint,
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the MUC one as well as the HTTP Upload one. We can generate such a
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certificate by leveraging the ACME
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<link linkend="opt-security.acme.certs._name_.extraDomainNames">extraDomainNames</link> module option.
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</para>
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<para>
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Provided the setup detailed in the previous section, you'll need the following acme configuration to generate
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a TLS certificate for the three endponits:
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<programlisting>
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security.acme = {
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<link linkend="opt-security.acme.email">email</link> = "root@example.org";
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<link linkend="opt-security.acme.acceptTerms">acceptTerms</link> = true;
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<link linkend="opt-security.acme.certs">certs</link> = {
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"example.org" = {
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<link linkend="opt-security.acme.certs._name_.webroot">webroot</link> = "/var/www/example.org";
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<link linkend="opt-security.acme.certs._name_.email">email</link> = "root@example.org";
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<link linkend="opt-security.acme.certs._name_.extraDomainNames">extraDomainNames</link> = [ "conference.example.org" "upload.example.org" ];
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};
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};
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};</programlisting>
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</para>
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</section>
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</chapter>
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