/mandos/trunk

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/trunk

« back to all changes in this revision

Viewing changes to plugins.d/mandos-client.xml

  • Committer: teddy at recompile
  • Date: 2011-12-27 03:56:39 UTC
  • mto: This revision was merged to the branch mainline in revision 541.
  • Revision ID: teddy@recompile.se-20111227035639-hvvgrqchckawlg02
Add wireless network hook

* network-hooks.s/bridge: Use canonical syntax for "ip" command.
* network-hooks.s/wireless: New.
* network-hooks.s/wireless.conf: - '' -
* plugins.d/mandos-client.c (run_network_hooks): Add new "CONNECT"
                                                 environment variable.
* plugins.d/mandos-client.xml (NETWORK HOOKS/REQUIREMENTS): Document
                                                            "CONNECT"
                                                            environment
                                                            variable.

Show diffs side-by-side

added added

removed removed

Lines of Context:
2
2
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3
3
        "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4
4
<!ENTITY COMMANDNAME "mandos-client">
5
 
<!ENTITY TIMESTAMP "2010-09-26">
 
5
<!ENTITY TIMESTAMP "2011-11-27">
6
6
<!ENTITY % common SYSTEM "../common.ent">
7
7
%common;
8
8
]>
19
19
        <firstname>Björn</firstname>
20
20
        <surname>Påhlsson</surname>
21
21
        <address>
22
 
          <email>belorn@fukt.bsnet.se</email>
 
22
          <email>belorn@recompile.se</email>
23
23
        </address>
24
24
      </author>
25
25
      <author>
26
26
        <firstname>Teddy</firstname>
27
27
        <surname>Hogeborn</surname>
28
28
        <address>
29
 
          <email>teddy@fukt.bsnet.se</email>
 
29
          <email>teddy@recompile.se</email>
30
30
        </address>
31
31
      </author>
32
32
    </authorgroup>
33
33
    <copyright>
34
34
      <year>2008</year>
35
35
      <year>2009</year>
 
36
      <year>2011</year>
36
37
      <holder>Teddy Hogeborn</holder>
37
38
      <holder>Björn Påhlsson</holder>
38
39
    </copyright>
101
102
      </arg>
102
103
      <sbr/>
103
104
      <arg>
 
105
        <option>--network-hook-dir
 
106
        <replaceable>DIR</replaceable></option>
 
107
      </arg>
 
108
      <sbr/>
 
109
      <arg>
104
110
        <option>--debug</option>
105
111
      </arg>
106
112
    </cmdsynopsis>
137
143
      using TLS with an OpenPGP key to ensure authenticity and
138
144
      confidentiality.  This client program keeps running, trying all
139
145
      servers on the network, until it receives a satisfactory reply
140
 
      or a TERM signal is received.  If no servers are found, or after
141
 
      all servers have been tried, it waits indefinitely for new
142
 
      servers to appear.
 
146
      or a TERM signal.  After all servers have been tried, all
 
147
      servers are periodically retried.  If no servers are found it
 
148
      will wait indefinitely for new servers to appear.
 
149
    </para>
 
150
    <para>
 
151
      The network interface is selected like this: If an interface is
 
152
      specified using the <option>--interface</option> option, that
 
153
      interface is used.  Otherwise, <command>&COMMANDNAME;</command>
 
154
      will choose any interface that is up and running and is not a
 
155
      loopback interface, is not a point-to-point interface, is
 
156
      capable of broadcasting and does not have the NOARP flag (see
 
157
      <citerefentry><refentrytitle>netdevice</refentrytitle>
 
158
      <manvolnum>7</manvolnum></citerefentry>).  (If the
 
159
      <option>--connect</option> option is used, point-to-point
 
160
      interfaces and non-broadcast interfaces are accepted.)  If no
 
161
      acceptable interfaces are found, re-run the check but without
 
162
      the <quote>up and running</quote> requirement, and manually take
 
163
      the selected interface up (and later take it down on program
 
164
      exit).
 
165
    </para>
 
166
    <para>
 
167
      Before a network interface is selected, all <quote>network
 
168
      hooks</quote> are run; see <xref linkend="network-hooks"/>.
143
169
    </para>
144
170
    <para>
145
171
      This program is not meant to be run directly; it is really meant
222
248
            can not be a pseudo-interface such as <quote>br0</quote>
223
249
            or <quote>tun0</quote>; such interfaces will not exist
224
250
            until much later in the boot process, and can not be used
225
 
            by this program.
 
251
            by this program, unless created by a <quote>network
 
252
            hook</quote> — see <xref linkend="network-hooks"/>.
226
253
          </para>
227
254
          <para>
228
255
            <replaceable>NAME</replaceable> can be the string
303
330
        >SECONDS</replaceable></option></term>
304
331
        <listitem>
305
332
          <para>
306
 
            All Mandos servers servers are tried repeatedly until a
307
 
            password is received.  This value specifies, in seconds,
308
 
            how long between each successive try <emphasis>for the
309
 
            same server</emphasis>.  The default is 10 seconds.
 
333
            All Mandos servers are tried repeatedly until a password
 
334
            is received.  This value specifies, in seconds, how long
 
335
            between each successive try <emphasis>for the same
 
336
            server</emphasis>.  The default is 10 seconds.
 
337
          </para>
 
338
        </listitem>
 
339
      </varlistentry>
 
340
 
 
341
      <varlistentry>
 
342
        <term><option>--network-hook-dir=<replaceable
 
343
        >DIR</replaceable></option></term>
 
344
        <listitem>
 
345
          <para>
 
346
            Network hook directory.  The default directory is
 
347
            <quote><filename class="directory"
 
348
            >/lib/mandos/network-hooks.d</filename></quote>.
310
349
          </para>
311
350
        </listitem>
312
351
      </varlistentry>
376
415
      <refentrytitle>plugin-runner</refentrytitle>
377
416
      <manvolnum>8mandos</manvolnum></citerefentry>) is used to run
378
417
      both this program and others in in parallel,
379
 
      <emphasis>one</emphasis> of which will prompt for passwords on
380
 
      the system console.
 
418
      <emphasis>one</emphasis> of which (<citerefentry>
 
419
      <refentrytitle>password-prompt</refentrytitle>
 
420
      <manvolnum>8mandos</manvolnum></citerefentry>) will prompt for
 
421
      passwords on the system console.
381
422
    </para>
382
423
  </refsect1>
383
424
  
388
429
      server could be found and the password received from it could be
389
430
      successfully decrypted and output on standard output.  The
390
431
      program will exit with a non-zero exit status only if a critical
391
 
      error occurs.  Otherwise, it will forever connect to new
392
 
      <application>Mandos</application> servers as they appear, trying
393
 
      to get a decryptable password and print it.
 
432
      error occurs.  Otherwise, it will forever connect to any
 
433
      discovered <application>Mandos</application> servers, trying to
 
434
      get a decryptable password and print it.
394
435
    </para>
395
436
  </refsect1>
396
437
  
404
445
    </para>
405
446
  </refsect1>
406
447
  
 
448
  <refsect1 id="network-hooks">
 
449
    <title>NETWORK HOOKS</title>
 
450
    <para>
 
451
      If a network interface like a bridge or tunnel is required to
 
452
      find a Mandos server, this requires the interface to be up and
 
453
      running before <command>&COMMANDNAME;</command> starts looking
 
454
      for Mandos servers.  This can be accomplished by creating a
 
455
      <quote>network hook</quote> program, and placing it in a special
 
456
      directory.
 
457
    </para>
 
458
    <para>
 
459
      Before the network is used (and again before program exit), any
 
460
      runnable programs found in the network hook directory are run
 
461
      with the argument <quote><literal>start</literal></quote> or
 
462
      <quote><literal>stop</literal></quote>.  This should bring up or
 
463
      down, respectively, any network interface which
 
464
      <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
 
470
        consist entirely of upper and lower case letters, digits,
 
471
        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>
 
478
        <varlistentry>
 
479
          <term><literal>start</literal></term>
 
480
          <listitem>
 
481
            <para>
 
482
              This should make the network hook create (if necessary)
 
483
              and bring up a network interface.
 
484
            </para>
 
485
          </listitem>
 
486
        </varlistentry>
 
487
        <varlistentry>
 
488
          <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>
 
494
          </listitem>
 
495
        </varlistentry>
 
496
        <varlistentry>
 
497
          <term><literal>files</literal></term>
 
498
          <listitem>
 
499
            <para>
 
500
              This should make the network hook print, <emphasis>one
 
501
              file per line</emphasis>, all the files needed for it to
 
502
              run.  (These files will be copied into the initial RAM
 
503
              filesystem.)  Typical use is for a network hook which is
 
504
              a shell script to print its needed binaries.
 
505
            </para>
 
506
            <para>
 
507
              It is not necessary to print any non-executable files
 
508
              already in the network hook directory, these will be
 
509
              copied implicitly if they otherwise satisfy the name
 
510
              requirement.
 
511
            </para>
 
512
          </listitem>
 
513
        </varlistentry>
 
514
        <varlistentry>
 
515
          <term><literal>modules</literal></term>
 
516
          <listitem>
 
517
            <para>
 
518
              This should make the network hook print, <emphasis>on
 
519
              separate lines</emphasis>, all the kernel modules needed
 
520
              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>.  Is
 
587
              only set if <envar>MODE</envar> is
 
588
              <quote><literal>start</literal></quote> or
 
589
              <quote><literal>stop</literal></quote>.
 
590
            </para>
 
591
          </listitem>
 
592
        </varlistentry>
 
593
        <varlistentry>
 
594
          <term><envar>CONNECT</envar></term>
 
595
          <listitem>
 
596
            <para>
 
597
              This will be the same as the <option>--connect</option>
 
598
              option passed to <command>&COMMANDNAME;</command>.  Is
 
599
              only set if <option>--connect</option> is passed and
 
600
              <envar>MODE</envar> is
 
601
              <quote><literal>start</literal></quote> or
 
602
              <quote><literal>stop</literal></quote>.
 
603
            </para>
 
604
          </listitem>
 
605
        </varlistentry>
 
606
      </variablelist>
 
607
      <para>
 
608
        A hook may not read from standard input, and should be
 
609
        restrictive in printing to standard output or standard error
 
610
        unless <varname>VERBOSITY</varname> is
 
611
        <quote><literal>1</literal></quote>.
 
612
      </para>
 
613
    </refsect2>
 
614
  </refsect1>
 
615
  
407
616
  <refsect1 id="files">
408
617
    <title>FILES</title>
409
618
    <variablelist>
421
630
          </para>
422
631
        </listitem>
423
632
      </varlistentry>
 
633
      <varlistentry>
 
634
        <term><filename
 
635
        class="directory">/lib/mandos/network-hooks.d</filename></term>
 
636
        <listitem>
 
637
          <para>
 
638
            Directory where network hooks are located.  Change this
 
639
            with the <option>--network-hook-dir</option> option.  See
 
640
            <xref linkend="network-hooks"/>.
 
641
          </para>
 
642
        </listitem>
 
643
      </varlistentry>
424
644
    </variablelist>
425
645
  </refsect1>
426
646
  
535
755
  <refsect1 id="see_also">
536
756
    <title>SEE ALSO</title>
537
757
    <para>
 
758
      <citerefentry><refentrytitle>intro</refentrytitle>
 
759
      <manvolnum>8mandos</manvolnum></citerefentry>,
538
760
      <citerefentry><refentrytitle>cryptsetup</refentrytitle>
539
761
      <manvolnum>8</manvolnum></citerefentry>,
540
762
      <citerefentry><refentrytitle>crypttab</refentrytitle>