/mandos/trunk

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<!ENTITY VERSION "1.0">

<!ENTITY COMMANDNAME "plugin-runner">

<!ENTITY TIMESTAMP "2008-09-01">

]>

<refentry xmlns:xi="http://www.w3.org/2001/XInclude">

  <refentryinfo>

    <title>Mandos Manual</title>

    <!-- Nwalsh’s docbook scripts use this to generate the footer: -->

    <productname>Mandos</productname>

    <productnumber>&VERSION;</productnumber>

    <date>&TIMESTAMP;</date>

    <authorgroup>

      <author>

	<firstname>Björn</firstname>

	<surname>Påhlsson</surname>

	<address>

	  <email>belorn@fukt.bsnet.se</email>

	</address>

      </author>

      <author>

	<firstname>Teddy</firstname>

	<surname>Hogeborn</surname>

	<address>

	  <email>teddy@fukt.bsnet.se</email>

	</address>

      </author>

    </authorgroup>

    <copyright>

      <year>2008</year>

      <holder>Teddy Hogeborn</holder>

      <holder>Björn Påhlsson</holder>

    </copyright>

    <xi:include href="legalnotice.xml"/>

  </refentryinfo>

  <refmeta>

    <refentrytitle>&COMMANDNAME;</refentrytitle>

    <manvolnum>8mandos</manvolnum>

  </refmeta>

  <refnamediv>

    <refname><command>&COMMANDNAME;</command></refname>

    <refpurpose>

      Run Mandos plugins.  Pass data from first succesful one.

    </refpurpose>

  </refnamediv>

  <refsynopsisdiv>

    <cmdsynopsis>

      <command>&COMMANDNAME;</command>

      <group rep="repeat">

	<arg choice="plain"><option>--global-env=<replaceable

	>VAR</replaceable><literal>=</literal><replaceable

	>value</replaceable></option></arg>

	<arg choice="plain"><option>-e

	<replaceable>VAR</replaceable><literal>=</literal><replaceable

	>value</replaceable> </option></arg>

      </group>

      <sbr/>

      <group rep="repeat">

	<arg choice="plain"><option>--env-for=<replaceable

	>PLUGIN</replaceable><literal>:</literal><replaceable

	>ENV</replaceable><literal>=</literal><replaceable

	>value</replaceable></option></arg>

	<arg choice="plain"><option>-f<replaceable>

	PLUGIN</replaceable><literal>:</literal><replaceable

	>ENV</replaceable><literal>=</literal><replaceable

	>value</replaceable> </option></arg>

      </group>

      <sbr/>

      <group rep="repeat">

	<arg choice="plain"><option>--global-options=<replaceable

	>OPTIONS</replaceable></option></arg>

	<arg choice="plain"><option>-g<replaceable>

	OPTIONS</replaceable> </option></arg>

      </group>

      <sbr/>

      <group rep="repeat">

	<arg choice="plain"><option>--options-for=<replaceable

	>PLUGIN</replaceable><literal>:</literal><replaceable

	>OPTIONS</replaceable></option></arg>

	<arg choice="plain"><option>-f<replaceable>

	PLUGIN</replaceable><literal>:</literal><replaceable

	>OPTIONS</replaceable> </option></arg>

      </group>

      <sbr/>

      <group rep="repeat">

	<arg choice="plain"><option>--disable=<replaceable

	>PLUGIN</replaceable></option></arg>

	<arg choice="plain"><option>-d

	<replaceable>PLUGIN</replaceable> </option></arg>

      </group>

      <sbr/>

      <arg><option>--groupid=<replaceable

      >ID</replaceable></option></arg>

      <sbr/>

      <arg><option>--userid=<replaceable

      >ID</replaceable></option></arg>

      <sbr/>

      <arg><option>--plugin-dir=<replaceable

      >DIRECTORY</replaceable></option></arg>

      <sbr/>

      <arg><option>--debug</option></arg>

    </cmdsynopsis>

    <cmdsynopsis>

      <command>&COMMANDNAME;</command>

      <group choice="req">

	<arg choice="plain"><option>--help</option></arg>

	<arg choice="plain"><option>-?</option></arg>

      </group>

    </cmdsynopsis>

    <cmdsynopsis>

      <command>&COMMANDNAME;</command>

      <arg choice="plain"><option>--usage</option></arg>

    </cmdsynopsis>

    <cmdsynopsis>

      <command>&COMMANDNAME;</command>

      <group choice="req">

	<arg choice="plain"><option>--version</option></arg>

	<arg choice="plain"><option>-V</option></arg>

      </group>

    </cmdsynopsis>

  </refsynopsisdiv>

  <refsect1 id="description">

    <title>DESCRIPTION</title>

    <para>

      <command>&COMMANDNAME;</command> is a program which is meant to

      be specified as <quote>keyscript</quote> in <citerefentry>

      <refentrytitle>crypttab</refentrytitle>

      <manvolnum>5</manvolnum></citerefentry> for the root disk.  The

      aim of this program is therefore to output a password, which

      then <citerefentry><refentrytitle>cryptsetup</refentrytitle>

      <manvolnum>8</manvolnum></citerefentry> will use to try and

      unlock the root disk.

    </para>

    <para>

      This program is not meant to be invoked directly, but can be in

      order to test it.  Note that any password obtained will simply

      be output on standard output.

    </para>

  </refsect1>

  <refsect1 id="purpose">

    <title>PURPOSE</title>

    <para>

      The purpose of this is to enable <emphasis>remote and unattended

      rebooting</emphasis> of client host computer with an

      <emphasis>encrypted root file system</emphasis>.  See <xref

      linkend="overview"/> for details.

    </para>

  </refsect1>

  <refsect1>

    <title>OPTIONS</title>

    <variablelist>

      <varlistentry>

	<term><option>--global-env

	<replaceable>VAR</replaceable><literal>=</literal><replaceable

	>value</replaceable></option></term>

	<term><option>-e

	<replaceable>VAR</replaceable><literal>=</literal><replaceable

	>value</replaceable></option></term>

	<listitem>

	  <para>

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--env-for

	<replaceable>PLUGIN</replaceable><literal>:</literal

	><replaceable>ENV</replaceable><literal>=</literal

	><replaceable>value</replaceable></option></term>

	<term><option>-f

	<replaceable>PLUGIN</replaceable><literal>:</literal

	><replaceable>ENV</replaceable><literal>=</literal

	><replaceable>value</replaceable></option></term>

	<listitem>

	  <para>

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--global-options

	<replaceable>OPTIONS</replaceable></option></term>

	<term><option>-g

	<replaceable>OPTIONS</replaceable></option></term>

	<listitem>

	  <para>

	    Pass some options to <emphasis>all</emphasis> plugins.

	    <replaceable>OPTIONS</replaceable> is a comma separated

	    list of options.  This is not a very useful option, except

	    for specifying the <quote><option>--debug</option></quote>

	    for all plugins.

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--options-for

	<replaceable>PLUGIN</replaceable><literal>:</literal

	><replaceable>OPTION</replaceable></option></term>

	<term><option>-o

	<replaceable>PLUGIN</replaceable><literal>:</literal

	><replaceable>OPTION</replaceable></option></term>

	<listitem>

	  <para>

	    Pass some options to a specific plugin.  <replaceable

	    >PLUGIN</replaceable> is the name (file basename) of a

	    plugin, and <replaceable>OPTIONS</replaceable> is a comma

	    separated list of options.

	  </para>

	  <para>

	    Note that since options are not split on whitespace, the

	    way to pass, to the plugin

	    <quote><filename>foo</filename></quote>, the option

	    <option>--bar</option> with the option argument

	    <quote>baz</quote> is either

	    <userinput>--options-for=foo:--bar=baz</userinput> or

	    <userinput>--options-for=foo:--bar,baz</userinput>, but

	    <emphasis>not</emphasis>

	    <userinput>--options-for="foo:--bar baz"</userinput>.

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option> --disable

	<replaceable>PLUGIN</replaceable></option></term>

	<term><option>-d

	<replaceable>PLUGIN</replaceable></option></term>

	<listitem>

	  <para>

	    Disable the plugin named

	    <replaceable>PLUGIN</replaceable>.  The plugin will not be

	    started.

	  </para>	

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--groupid

	<replaceable>ID</replaceable></option></term>

	<listitem>

	  <para>

	    Change to group ID <replaceable>ID</replaceable> on

	    startup.  The default is 65534.  All plugins will be

	    started using this group ID.  <emphasis>Note:</emphasis>

	    This must be a number, not a name.

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--userid

	<replaceable>ID</replaceable></option></term>

	<listitem>

	  <para>

	    Change to user ID <replaceable>ID</replaceable> on

	    startup.  The default is 65534.  All plugins will be

	    started using this user ID.  <emphasis>Note:</emphasis>

	    This must be a number, not a name.

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--plugin-dir

	<replaceable>DIRECTORY</replaceable></option></term>

	<listitem>

	  <para>

	    Specify a different plugin directory.  The default is

	    <filename>/lib/mandos/plugins.d</filename>, which will

	    exist in the initial <acronym>RAM</acronym> disk

	    environment.

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--debug</option></term>

	<listitem>

	  <para>

	    Enable debug mode.  This will enable a lot of output to

	    standard error about what the program is doing.  The

	    program will still perform all other functions normally.

	    The default is to <emphasis>not</emphasis> run in debug

	    mode.

	  </para>

	  <para>

	    The plugins will <emphasis>not</emphasis> be affected by

	    this option.  Use

	    <userinput><option>--global-options=--debug</option></userinput>

	    if complete debugging eruption is desired.

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--help</option></term>

	<term><option>-?</option></term>

	<listitem>

	  <para>

	    Gives a help message about options and their meanings.

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--usage</option></term>

	<listitem>

	  <para>

	    Gives a short usage message.

	  </para>

	</listitem>

      </varlistentry>

      <varlistentry>

	<term><option>--version</option></term>

	<term><option>-V</option></term>

	<listitem>

	  <para>

	    Prints the program version.

	  </para>

	</listitem>

      </varlistentry>

    </variablelist>

  </refsect1>

  <refsect1 id="overview">

    <title>OVERVIEW</title>

    <xi:include href="overview.xml"/>

    <para>

      This program will run on the client side in the initial

      <acronym>RAM</acronym> disk environment, and is responsible for

      getting a password.  It does this by running plugins, one of

      which will normally be the actual client program communicating

      with the server.

    </para>

  </refsect1>

  <refsect1 id="plugins">

    <title>PLUGINS</title>

    <para>

      This program will get a password by running a number of

      <firstterm>plugins</firstterm>, which are simply executable

      programs in a directory in the initial <acronym>RAM</acronym>

      disk environment.  The default directory is

      <filename>/lib/mandos/plugins.d</filename>, but this can be

      changed with the <option>--plugin-dir</option> option.  The

      plugins are started in parallel, and the first plugin to output

      a password <emphasis>and</emphasis> exit with a successful exit

      code will make this plugin-runner output the password from that

      plugin, stop any other plugins, and exit.

    </para>

  </refsect1>

  <refsect1 id="fallback">

    <title>FALLBACK</title>

    <para>

      If no plugins succeed, this program will, as a fallback, ask for

      a password on the console using <citerefentry><refentrytitle

      >getpass</refentrytitle><manvolnum>3</manvolnum></citerefentry>,

      and output it.  This is not meant to be the normal mode of

      operation, as there is a separate plugin for getting a password

      from the console.

    </para>

  </refsect1>

  <refsect1 id="exit_status">

    <title>EXIT STATUS</title>

    <para>

      Exit status of this program is zero if no errors were

      encountered, and otherwise not.  The fallback (see <xref

      linkend="fallback"/>) may or may not have succeeded in either

      case.

    </para>

  </refsect1>

  <refsect1 id="environment">

    <title>ENVIRONMENT</title>

    <para>

    </para>

  </refsect1>

  <refsect1 id="file">

    <title>FILES</title>

    <para>

      <variablelist>

	<varlistentry>

	  <term><filename

	  >/conf/conf.d/mandos/plugin-runner.conf</filename></term>

	  <listitem>

	    <para>

	      Since this program will be run as a keyscript, there is

	      little to no opportunity to pass command line arguments

	      to it.  Therefore, it will <emphasis>also</emphasis>

	      read this file and use its contents as

	      whitespace-separated command line options.  Also,

	      everything from a <quote>#</quote> character to the end

	      of a line is ignored.

	    </para>

	  </listitem>

	</varlistentry>

      </variablelist>

    </para>

  </refsect1>

  <refsect1 id="bugs">

    <title>BUGS</title>

    <para>

    </para>

  </refsect1>

  <refsect1 id="examples">

    <title>EXAMPLE</title>

    <para>

    </para>

  </refsect1>

  <refsect1 id="security">

    <title>SECURITY</title>

    <para>

    </para>

  </refsect1>

  <refsect1 id="see_also">

    <title>SEE ALSO</title>

    <para>

      <citerefentry><refentrytitle>cryptsetup</refentrytitle>

      <manvolnum>8</manvolnum></citerefentry>,

      <citerefentry><refentrytitle>mandos</refentrytitle>

      <manvolnum>8</manvolnum></citerefentry>,

      <citerefentry><refentrytitle>password-prompt</refentrytitle>

      <manvolnum>8mandos</manvolnum></citerefentry>,

      <citerefentry><refentrytitle>password-request</refentrytitle>

      <manvolnum>8mandos</manvolnum></citerefentry>

    </para>

  </refsect1>

</refentry>

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