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plugins.d/askpass-fifo.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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        "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY COMMANDNAME "askpass-fifo">
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<!ENTITY TIMESTAMP "2018-02-08">
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<!ENTITY % common SYSTEM "../common.ent">
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%common;
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]>
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<refentry xmlns:xi="http://www.w3.org/2001/XInclude">
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  <refentryinfo>
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    <title>Mandos Manual</title>
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    <!-- NWalsh’s docbook scripts use this to generate the footer: -->
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    <productname>Mandos</productname>
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    <productnumber>&version;</productnumber>
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    <date>&TIMESTAMP;</date>
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    <authorgroup>
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      <author>
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        <firstname>Björn</firstname>
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        <surname>Påhlsson</surname>
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        <address>
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          <email>belorn@recompile.se</email>
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        </address>
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      </author>
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      <author>
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        <firstname>Teddy</firstname>
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        <surname>Hogeborn</surname>
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        <address>
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          <email>teddy@recompile.se</email>
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        </address>
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      </author>
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    </authorgroup>
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    <copyright>
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      <year>2008</year>
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      <year>2009</year>
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      <year>2010</year>
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      <year>2011</year>
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      <year>2012</year>
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      <year>2013</year>
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      <year>2014</year>
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      <year>2015</year>
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      <year>2016</year>
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      <year>2017</year>
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      <year>2018</year>
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      <holder>Teddy Hogeborn</holder>
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      <holder>Björn Påhlsson</holder>
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    </copyright>
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  </refentryinfo>
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  <refmeta>
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    <refentrytitle>&COMMANDNAME;</refentrytitle>
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    <manvolnum>8mandos</manvolnum>
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  </refmeta>
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  <refnamediv>
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    <refname><command>&COMMANDNAME;</command></refname>
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    <refpurpose>Mandos plugin to get a password from a
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    FIFO.</refpurpose>
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  </refnamediv>
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  <refsynopsisdiv>
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    <cmdsynopsis>
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      <command>&COMMANDNAME;</command>
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    </cmdsynopsis>
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  </refsynopsisdiv>
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  <refsect1 id="description">
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    <title>DESCRIPTION</title>
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    <para>
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      This program reads a password from a <acronym>FIFO</acronym> and
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      outputs it to standard output.
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    </para>
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    <para>
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      This program is not very useful on its own.  This program is
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      really meant to run as a plugin in the <application
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      >Mandos</application> client-side system, where it is used as a
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      fallback and alternative to retrieving passwords from a
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      <application >Mandos</application> server.
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    </para>
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    <para>
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      This program is meant to be imitate a feature of the
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      <command>askpass</command> program, so that programs written to
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      interface with it can keep working under the
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      <application>Mandos</application> system.
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    </para>
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  </refsect1>
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  <refsect1 id="options">
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    <title>OPTIONS</title>
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    <para>
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      This program takes no options.
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    </para>
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  </refsect1>
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  <refsect1 id="exit_status">
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    <title>EXIT STATUS</title>
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    <para>
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      If exit status is 0, the output from the program is the password
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      as it was read.  Otherwise, if exit status is other than 0, the
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      program was interrupted or encountered an error, and any output
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      so far could be corrupt and/or truncated, and should therefore
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      be ignored.
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    </para>
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  </refsect1>
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  <refsect1 id="files">
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    <title>FILES</title>
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    <variablelist>
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      <varlistentry>
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        <term><filename>/lib/cryptsetup/passfifo</filename></term>
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        <listitem>
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          <para>
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            This is the <acronym>FIFO</acronym> where this program
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            will read the password.  If it does not exist, it will be
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            created.
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          </para>
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        </listitem>
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      </varlistentry>
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    </variablelist>
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  </refsect1>
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  <refsect1 id="bugs">
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    <title>BUGS</title>
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    <xi:include href="../bugs.xml"/>
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  </refsect1>
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  <refsect1 id="example">
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    <title>EXAMPLE</title>
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    <para>
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      Note that normally, this program will not be invoked directly,
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      but instead started by the Mandos <citerefentry><refentrytitle
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      >plugin-runner</refentrytitle><manvolnum>8mandos</manvolnum>
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      </citerefentry>.
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    </para>
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    <informalexample>
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      <para>
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        This program takes no options.
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      </para>
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      <para>
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        <userinput>&COMMANDNAME;</userinput>
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      </para>
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    </informalexample>
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  </refsect1>
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  <refsect1 id="security">
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    <title>SECURITY</title>
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    <para>
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      The only thing that could be considered worthy of note is
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      this:  This program is meant to be run by <citerefentry>
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      <refentrytitle>plugin-runner</refentrytitle><manvolnum
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      >8mandos</manvolnum></citerefentry>, and will, when run
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      standalone, outside, in a normal environment, immediately output
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      on its standard output any presumably secret password it just
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      received.  Therefore, when running this program standalone
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      (which should never normally be done), take care not to type in
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      any real secret password by force of habit, since it would then
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      immediately be shown as output.
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    </para>
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  </refsect1>
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  <refsect1 id="see_also">
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    <title>SEE ALSO</title>
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    <para>
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      <citerefentry><refentrytitle>intro</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>fifo</refentrytitle>
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      <manvolnum>7</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>
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    </para>
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  </refsect1>
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</refentry>
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<!-- Local Variables: -->
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<!-- time-stamp-start: "<!ENTITY TIMESTAMP [\"']" -->
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<!-- time-stamp-end: "[\"']>" -->
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<!-- time-stamp-format: "%:y-%02m-%02d" -->
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<!-- End: -->