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  • Committer: teddy at bsnet
  • Date: 2011-12-25 00:40:09 UTC
  • Revision ID: teddy@fukt.bsnet.se-20111225004009-n5uimmac6h8djtv8
* plugin-runner.c (add_to_char_array): Added "nonnull" attribute.
  (add_argument): Added "nonnull" attribute on the "arg" argument.
  (add_environment): Added "nonnull" attribute on the "def" argument.
  (print_out_password, free_plugin): Added "nonnull" attribute.
  (main/parse_opt): Added "nonnull" attribute on the "state" argument.
* plugins.d/mandos-client.c (perror_plus): Bug fix; restore errno
                                           after fprintf().
* plugins.d/password-prompt.c (fprintf_plus): New.
 (conflict_detection/is_plymouth, main/parse_opt): Added "nonnull"
                                                   attribute.
 (conflict_detection/is_plymouth, conflict_detection, main): Bug fix;
                                                             Call
                                                             error_plus()
                                                             instead
                                                             of
                                                             error().
  (main/parse_opt): Added "nonnull" attribute on the "state" argument.
* plugins.d/plymouth.c (exec_and_wait): Added "nonnull" attribute on
                                        the "path" and "argv"
                                        arguments.
  (is_plymouth): Added "nonnull" attribute.

Show diffs side-by-side

added added

removed removed

Lines of Context:
plugins.d/mandos-client.xml
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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 "mandos-client">
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<!ENTITY TIMESTAMP "2010-09-26">
 
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<!ENTITY TIMESTAMP "2011-11-27">
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<!ENTITY % common SYSTEM "../common.ent">
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%common;
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]>
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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@fukt.bsnet.se</email>
 
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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@fukt.bsnet.se</email>
 
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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>2011</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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      </arg>
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      <sbr/>
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      <arg>
 
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        <option>--retry <replaceable>SECONDS</replaceable></option>
 
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      </arg>
 
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      <sbr/>
 
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      <arg>
 
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        <option>--network-hook-dir
 
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        <replaceable>DIR</replaceable></option>
 
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      </arg>
 
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      <sbr/>
 
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      <arg>
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        <option>--debug</option>
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      </arg>
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    </cmdsynopsis>
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      using TLS with an OpenPGP key to ensure authenticity and
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      confidentiality.  This client program keeps running, trying all
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      servers on the network, until it receives a satisfactory reply
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      or a TERM signal is received.  If no servers are found, or after
137
 
      all servers have been tried, it waits indefinitely for new
138
 
      servers to appear.
 
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      or a TERM signal.  After all servers have been tried, all
 
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      servers are periodically retried.  If no servers are found it
 
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      will wait indefinitely for new servers to appear.
 
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    </para>
 
150
    <para>
 
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      The network interface is selected like this: If an interface is
 
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      specified using the <option>--interface</option> option, that
 
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      interface is used.  Otherwise, <command>&COMMANDNAME;</command>
 
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      will choose any interface that is up and running and is not a
 
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      loopback interface, is not a point-to-point interface, is
 
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      capable of broadcasting and does not have the NOARP flag (see
 
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      <citerefentry><refentrytitle>netdevice</refentrytitle>
 
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      <manvolnum>7</manvolnum></citerefentry>).  (If the
 
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      <option>--connect</option> option is used, point-to-point
 
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      interfaces and non-broadcast interfaces are accepted.)  If no
 
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      acceptable interfaces are found, re-run the check but without
 
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      the <quote>up and running</quote> requirement, and manually take
 
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      the selected interface up (and later take it down on program
 
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      exit).
 
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    </para>
 
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    <para>
 
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      Before a network interface is selected, all <quote>network
 
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      hooks</quote> are run; see <xref linkend="network-hooks"/>.
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    </para>
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    <para>
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      This program is not meant to be run directly; it is really meant
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            can not be a pseudo-interface such as <quote>br0</quote>
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            or <quote>tun0</quote>; such interfaces will not exist
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            until much later in the boot process, and can not be used
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            by this program.
 
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            by this program, unless created by a <quote>network
 
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            hook</quote> — see <xref linkend="network-hooks"/>.
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          </para>
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          <para>
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            <replaceable>NAME</replaceable> can be the string
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          </para>
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        </listitem>
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      </varlistentry>
 
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      <varlistentry>
 
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        <term><option>--retry=<replaceable
 
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        >SECONDS</replaceable></option></term>
 
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        <listitem>
 
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          <para>
 
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            All Mandos servers are tried repeatedly until a password
 
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            is received.  This value specifies, in seconds, how long
 
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            between each successive try <emphasis>for the same
 
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            server</emphasis>.  The default is 10 seconds.
 
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          </para>
 
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        </listitem>
 
339
      </varlistentry>
 
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      <varlistentry>
 
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        <term><option>--network-hook-dir=<replaceable
 
343
        >DIR</replaceable></option></term>
 
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        <listitem>
 
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          <para>
 
346
            Network hook directory.  The default directory is
 
347
            <quote><filename class="directory"
 
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            >/lib/mandos/network-hooks.d</filename></quote>.
 
349
          </para>
 
350
        </listitem>
 
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      </varlistentry>
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      <varlistentry>
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        <term><option>--debug</option></term>
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      <refentrytitle>plugin-runner</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>) is used to run
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      both this program and others in in parallel,
362
 
      <emphasis>one</emphasis> of which will prompt for passwords on
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      the system console.
 
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      <emphasis>one</emphasis> of which (<citerefentry>
 
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      <refentrytitle>password-prompt</refentrytitle>
 
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      <manvolnum>8mandos</manvolnum></citerefentry>) will prompt for
 
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      passwords on the system console.
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    </para>
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  </refsect1>
366
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      server could be found and the password received from it could be
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      successfully decrypted and output on standard output.  The
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      program will exit with a non-zero exit status only if a critical
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      error occurs.  Otherwise, it will forever connect to new
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      <application>Mandos</application> servers as they appear, trying
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      to get a decryptable password and print it.
 
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      error occurs.  Otherwise, it will forever connect to any
 
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      discovered <application>Mandos</application> servers, trying to
 
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      get a decryptable password and print it.
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    </para>
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  </refsect1>
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    </para>
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  </refsect1>
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448
  <refsect1 id="network-hooks">
 
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    <title>NETWORK HOOKS</title>
 
450
    <para>
 
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      If a network interface like a bridge or tunnel is required to
 
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      find a Mandos server, this requires the interface to be up and
 
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      running before <command>&COMMANDNAME;</command> starts looking
 
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      for Mandos servers.  This can be accomplished by creating a
 
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      <quote>network hook</quote> program, and placing it in a special
 
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      directory.
 
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    </para>
 
458
    <para>
 
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      Before the network is used (and again before program exit), any
 
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      runnable programs found in the network hook directory are run
 
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      with the argument <quote><literal>start</literal></quote> or
 
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      <quote><literal>stop</literal></quote>.  This should bring up or
 
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      down, respectively, any network interface which
 
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      <command>&COMMANDNAME;</command> should use.
 
465
    </para>
 
466
    <refsect2 id="hook-requirements">
 
467
      <title>REQUIREMENTS</title>
 
468
      <para>
 
469
        A network hook must be an executable file, and its name must
 
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        consist entirely of upper and lower case letters, digits,
 
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        underscores, periods, and hyphens.
 
472
      </para>
 
473
      <para>
 
474
        A network hook will receive one argument, which can be one of
 
475
        the following:
 
476
      </para>
 
477
      <variablelist>
 
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        <varlistentry>
 
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          <term><literal>start</literal></term>
 
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          <listitem>
 
481
            <para>
 
482
              This should make the network hook create (if necessary)
 
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              and bring up a network interface.
 
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            </para>
 
485
          </listitem>
 
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        </varlistentry>
 
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        <varlistentry>
 
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          <term><literal>stop</literal></term>
 
489
          <listitem>
 
490
            <para>
 
491
              This should make the network hook take down a network
 
492
              interface, and delete it if it did not exist previously.
 
493
            </para>
 
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          </listitem>
 
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        </varlistentry>
 
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        <varlistentry>
 
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          <term><literal>files</literal></term>
 
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          <listitem>
 
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            <para>
 
500
              This should make the network hook print, <emphasis>one
 
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              file per line</emphasis>, all the files needed for it to
 
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              run.  (These files will be copied into the initial RAM
 
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              filesystem.)  Typical use is for a network hook which is
 
504
              a shell script to print its needed binaries.
 
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            </para>
 
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            <para>
 
507
              It is not necessary to print any non-executable files
 
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              already in the network hook directory, these will be
 
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              copied implicitly if they otherwise satisfy the name
 
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              requirement.
 
511
            </para>
 
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          </listitem>
 
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        </varlistentry>
 
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        <varlistentry>
 
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          <term><literal>modules</literal></term>
 
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          <listitem>
 
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            <para>
 
518
              This should make the network hook print, <emphasis>on
 
519
              separate lines</emphasis>, all the kernel modules needed
 
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              for it to run.  (These modules will be copied into the
 
521
              initial RAM filesystem.)  For instance, a tunnel
 
522
              interface needs the
 
523
              <quote><literal>tun</literal></quote> module.
 
524
            </para>
 
525
          </listitem>
 
526
        </varlistentry>
 
527
      </variablelist>
 
528
      <para>
 
529
        The network hook will be provided with a number of environment
 
530
        variables:
 
531
      </para>
 
532
      <variablelist>
 
533
        <varlistentry>
 
534
          <term><envar>MANDOSNETHOOKDIR</envar></term>
 
535
          <listitem>
 
536
            <para>
 
537
              The network hook directory, specified to
 
538
              <command>&COMMANDNAME;</command> by the
 
539
              <option>--network-hook-dir</option> option.  Note: this
 
540
              should <emphasis>always</emphasis> be used by the
 
541
              network hook to refer to itself or any files in the hook
 
542
              directory it may require.
 
543
            </para>
 
544
          </listitem>
 
545
        </varlistentry>
 
546
        <varlistentry>
 
547
          <term><envar>DEVICE</envar></term>
 
548
          <listitem>
 
549
            <para>
 
550
              The network interface, as specified to
 
551
              <command>&COMMANDNAME;</command> by the
 
552
              <option>--interface</option> option.  If this is not the
 
553
              interface a hook will bring up, there is no reason for a
 
554
              hook to continue.
 
555
            </para>
 
556
          </listitem>
 
557
        </varlistentry>
 
558
        <varlistentry>
 
559
          <term><envar>MODE</envar></term>
 
560
          <listitem>
 
561
            <para>
 
562
              This will be the same as the first argument;
 
563
              i.e. <quote><literal>start</literal></quote>,
 
564
              <quote><literal>stop</literal></quote>,
 
565
              <quote><literal>files</literal></quote>, or
 
566
              <quote><literal>modules</literal></quote>.
 
567
            </para>
 
568
          </listitem>
 
569
        </varlistentry>
 
570
        <varlistentry>
 
571
          <term><envar>VERBOSITY</envar></term>
 
572
          <listitem>
 
573
            <para>
 
574
              This will be the <quote><literal>1</literal></quote> if
 
575
              the <option>--debug</option> option is passed to
 
576
              <command>&COMMANDNAME;</command>, otherwise
 
577
              <quote><literal>0</literal></quote>.
 
578
            </para>
 
579
          </listitem>
 
580
        </varlistentry>
 
581
        <varlistentry>
 
582
          <term><envar>DELAY</envar></term>
 
583
          <listitem>
 
584
            <para>
 
585
              This will be the same as the <option>--delay</option>
 
586
              option passed to <command>&COMMANDNAME;</command>.
 
587
            </para>
 
588
          </listitem>
 
589
        </varlistentry>
 
590
      </variablelist>
 
591
      <para>
 
592
        A hook may not read from standard input, and should be
 
593
        restrictive in printing to standard output or standard error
 
594
        unless <varname>VERBOSITY</varname> is
 
595
        <quote><literal>1</literal></quote>.
 
596
      </para>
 
597
    </refsect2>
 
598
  </refsect1>
 
599
  
390
600
  <refsect1 id="files">
391
601
    <title>FILES</title>
392
602
    <variablelist>
404
614
          </para>
405
615
        </listitem>
406
616
      </varlistentry>
 
617
      <varlistentry>
 
618
        <term><filename
 
619
        class="directory">/lib/mandos/network-hooks.d</filename></term>
 
620
        <listitem>
 
621
          <para>
 
622
            Directory where network hooks are located.  Change this
 
623
            with the <option>--network-hook-dir</option> option.  See
 
624
            <xref linkend="network-hooks"/>.
 
625
          </para>
 
626
        </listitem>
 
627
      </varlistentry>
407
628
    </variablelist>
408
629
  </refsect1>
409
630
  
518
739
  <refsect1 id="see_also">
519
740
    <title>SEE ALSO</title>
520
741
    <para>
 
742
      <citerefentry><refentrytitle>intro</refentrytitle>
 
743
      <manvolnum>8mandos</manvolnum></citerefentry>,
521
744
      <citerefentry><refentrytitle>cryptsetup</refentrytitle>
522
745
      <manvolnum>8</manvolnum></citerefentry>,
523
746
      <citerefentry><refentrytitle>crypttab</refentrytitle>