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  • Committer: Teddy Hogeborn
  • Date: 2008-08-01 07:04:32 UTC
  • Revision ID: teddy@fukt.bsnet.se-20080801070432-5t1q0ds0bjxojyoz
* plugins.d/plugbasedclient.c (main): Close the pipe fd after dup2:ing
                                      it onto stdout.

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plugins.d/password-request.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"
3
 
        "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4
 
<!ENTITY VERSION "1.0">
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<!ENTITY COMMANDNAME "password-request">
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<!ENTITY TIMESTAMP "2008-09-03">
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]>
8
 
 
9
 
<refentry xmlns:xi="http://www.w3.org/2001/XInclude">
10
 
  <refentryinfo>
11
 
    <title>Mandos Manual</title>
12
 
    <!-- Nwalsh’s docbook scripts use this to generate the footer: -->
13
 
    <productname>Mandos</productname>
14
 
    <productnumber>&VERSION;</productnumber>
15
 
    <date>&TIMESTAMP;</date>
16
 
    <authorgroup>
17
 
      <author>
18
 
        <firstname>Björn</firstname>
19
 
        <surname>Påhlsson</surname>
20
 
        <address>
21
 
          <email>belorn@fukt.bsnet.se</email>
22
 
        </address>
23
 
      </author>
24
 
      <author>
25
 
        <firstname>Teddy</firstname>
26
 
        <surname>Hogeborn</surname>
27
 
        <address>
28
 
          <email>teddy@fukt.bsnet.se</email>
29
 
        </address>
30
 
      </author>
31
 
    </authorgroup>
32
 
    <copyright>
33
 
      <year>2008</year>
34
 
      <holder>Teddy Hogeborn</holder>
35
 
      <holder>Björn Påhlsson</holder>
36
 
    </copyright>
37
 
    <xi:include href="../legalnotice.xml"/>
38
 
  </refentryinfo>
39
 
 
40
 
  <refmeta>
41
 
    <refentrytitle>&COMMANDNAME;</refentrytitle>
42
 
    <manvolnum>8mandos</manvolnum>
43
 
  </refmeta>
44
 
  
45
 
  <refnamediv>
46
 
    <refname><command>&COMMANDNAME;</command></refname>
47
 
    <refpurpose>
48
 
      Client for mandos
49
 
    </refpurpose>
50
 
  </refnamediv>
51
 
 
52
 
  <refsynopsisdiv>
53
 
    <cmdsynopsis>
54
 
      <command>&COMMANDNAME;</command>
55
 
      <group>
56
 
        <arg choice="plain"><option>--connect
57
 
        <replaceable>IPADDR</replaceable><literal>:</literal
58
 
        ><replaceable>PORT</replaceable></option></arg>
59
 
        <arg choice="plain"><option>-c
60
 
        <replaceable>IPADDR</replaceable><literal>:</literal
61
 
        ><replaceable>PORT</replaceable></option></arg>
62
 
      </group>
63
 
      <sbr/>
64
 
      <group>
65
 
        <arg choice="plain"><option>--keydir
66
 
        <replaceable>DIRECTORY</replaceable></option></arg>
67
 
        <arg choice="plain"><option>-d
68
 
        <replaceable>DIRECTORY</replaceable></option></arg>
69
 
      </group>
70
 
      <sbr/>
71
 
      <group>
72
 
        <arg choice="plain"><option>--interface
73
 
        <replaceable>NAME</replaceable></option></arg>
74
 
        <arg choice="plain"><option>-i
75
 
        <replaceable>NAME</replaceable></option></arg>
76
 
      </group>
77
 
      <sbr/>
78
 
      <group>
79
 
        <arg choice="plain"><option>--pubkey
80
 
        <replaceable>FILE</replaceable></option></arg>
81
 
        <arg choice="plain"><option>-p
82
 
        <replaceable>FILE</replaceable></option></arg>
83
 
      </group>
84
 
      <sbr/>
85
 
      <group>
86
 
        <arg choice="plain"><option>--seckey
87
 
        <replaceable>FILE</replaceable></option></arg>
88
 
        <arg choice="plain"><option>-s
89
 
        <replaceable>FILE</replaceable></option></arg>
90
 
      </group>
91
 
      <sbr/>
92
 
      <arg>
93
 
        <option>--priority <replaceable>STRING</replaceable></option>
94
 
      </arg>
95
 
      <sbr/>
96
 
      <arg>
97
 
        <option>--dh-bits <replaceable>BITS</replaceable></option>
98
 
      </arg>
99
 
      <sbr/>
100
 
      <arg>
101
 
        <option>--debug</option>
102
 
      </arg>
103
 
    </cmdsynopsis>
104
 
    <cmdsynopsis>
105
 
      <command>&COMMANDNAME;</command>
106
 
      <group choice="req">
107
 
        <arg choice="plain"><option>--help</option></arg>
108
 
        <arg choice="plain"><option>-?</option></arg>
109
 
      </group>
110
 
    </cmdsynopsis>
111
 
    <cmdsynopsis>
112
 
      <command>&COMMANDNAME;</command>
113
 
      <arg choice="plain"><option>--usage</option></arg>
114
 
    </cmdsynopsis>
115
 
    <cmdsynopsis>
116
 
      <command>&COMMANDNAME;</command>
117
 
      <group choice="req">
118
 
        <arg choice="plain"><option>--version</option></arg>
119
 
        <arg choice="plain"><option>-V</option></arg>
120
 
      </group>
121
 
    </cmdsynopsis>
122
 
  </refsynopsisdiv>
123
 
 
124
 
  <refsect1 id="description">
125
 
    <title>DESCRIPTION</title>
126
 
    <para>
127
 
      <command>&COMMANDNAME;</command> is a client program that
128
 
      communicates with <citerefentry><refentrytitle
129
 
      >mandos</refentrytitle><manvolnum>8</manvolnum></citerefentry>
130
 
      to get a password.  It uses IPv6 link-local addresses to get
131
 
      network connectivity, Zeroconf to find servers, and TLS with an
132
 
      OpenPGP key to ensure authenticity and confidentiality.  It
133
 
      keeps running, trying all servers on the network, until it
134
 
      receives a satisfactory reply or a TERM signal is recieved.
135
 
    </para>
136
 
    <para>
137
 
      This program is not meant to be run directly; it is really meant
138
 
      to run as a plugin of the <application>Mandos</application>
139
 
      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
140
 
      <manvolnum>8mandos</manvolnum></citerefentry>, which runs in the
141
 
      initial <acronym>RAM</acronym> disk environment because it is
142
 
      specified as a <quote>keyscript</quote> in the <citerefentry>
143
 
      <refentrytitle>crypttab</refentrytitle><manvolnum>5</manvolnum>
144
 
      </citerefentry> file.
145
 
    </para>
146
 
  </refsect1>
147
 
  
148
 
  <refsect1 id="purpose">
149
 
    <title>PURPOSE</title>
150
 
    <para>
151
 
      The purpose of this is to enable <emphasis>remote and unattended
152
 
      rebooting</emphasis> of client host computer with an
153
 
      <emphasis>encrypted root file system</emphasis>.  See <xref
154
 
      linkend="overview"/> for details.
155
 
    </para>
156
 
  </refsect1>
157
 
  
158
 
  <refsect1 id="options">
159
 
    <title>OPTIONS</title>
160
 
    <para>
161
 
      This program is commonly not invoked from the command line; it
162
 
      is normally started by the <application>Mandos</application>
163
 
      plugin runner, see <citerefentry><refentrytitle
164
 
      >plugin-runner</refentrytitle><manvolnum>8mandos</manvolnum>
165
 
      </citerefentry>.  Any command line options this program accepts
166
 
      are therefore normally provided by the plugin runner, and not
167
 
      directly.
168
 
    </para>
169
 
    
170
 
    <variablelist>
171
 
      <varlistentry>
172
 
        <term><option>--connect=<replaceable
173
 
        >ADDRESS</replaceable><literal>:</literal><replaceable
174
 
        >PORT</replaceable></option></term>
175
 
        <term><option>-c
176
 
        <replaceable>ADDRESS</replaceable><literal>:</literal
177
 
        ><replaceable>PORT</replaceable></option></term>
178
 
        <listitem>
179
 
          <para>
180
 
            Do not use Zeroconf to locate servers.  Connect directly
181
 
            to only one specified <application>Mandos</application>
182
 
            server.  Note that an IPv6 address has colon characters in
183
 
            it, so the <emphasis>last</emphasis> colon character is
184
 
            assumed to separate the address from the port number.
185
 
          </para>
186
 
          <para>
187
 
            This option is normally only useful for testing and
188
 
            debugging.
189
 
          </para>
190
 
        </listitem>
191
 
      </varlistentry>
192
 
      
193
 
      <varlistentry>
194
 
        <term><option>--keydir=<replaceable
195
 
        >DIRECTORY</replaceable></option></term>
196
 
        <term><option>-d
197
 
        <replaceable>DIRECTORY</replaceable></option></term>
198
 
        <listitem>
199
 
          <para>
200
 
            Directory to read the OpenPGP key files
201
 
            <filename>pubkey.txt</filename> and
202
 
            <filename>seckey.txt</filename> from.  The default is
203
 
            <filename>/conf/conf.d/mandos</filename> (in the initial
204
 
            <acronym>RAM</acronym> disk environment).
205
 
          </para>
206
 
        </listitem>
207
 
      </varlistentry>
208
 
 
209
 
      <varlistentry>
210
 
        <term><option>--interface=
211
 
        <replaceable>NAME</replaceable></option></term>
212
 
        <term><option>-i
213
 
        <replaceable>NAME</replaceable></option></term>
214
 
        <listitem>
215
 
          <para>
216
 
            Network interface that will be brought up and scanned for
217
 
            Mandos servers to connect to.  The default it
218
 
            <quote><literal>eth0</literal></quote>.
219
 
          </para>
220
 
          <para>
221
 
            If the <option>--connect</option> option is used, this
222
 
            specifies the interface to use to connect to the address
223
 
            given.
224
 
          </para>
225
 
        </listitem>
226
 
      </varlistentry>
227
 
      
228
 
      <varlistentry>
229
 
        <term><option>--pubkey=<replaceable
230
 
        >FILE</replaceable></option></term>
231
 
        <term><option>-p
232
 
        <replaceable>FILE</replaceable></option></term>
233
 
        <listitem>
234
 
          <para>
235
 
            OpenPGP public key file base name.  This will be combined
236
 
            with the directory from the <option>--keydir</option>
237
 
            option to form an absolute file name.  The default name is
238
 
            <quote><literal>pubkey.txt</literal></quote>.
239
 
          </para>
240
 
        </listitem>
241
 
      </varlistentry>
242
 
 
243
 
      <varlistentry>
244
 
        <term><option>--seckey=<replaceable
245
 
        >FILE</replaceable></option></term>
246
 
        <term><option>-s
247
 
        <replaceable>FILE</replaceable></option></term>
248
 
        <listitem>
249
 
          <para>
250
 
            OpenPGP secret key file base name.  This will be combined
251
 
            with the directory from the <option>--keydir</option>
252
 
            option to form an absolute file name.  The default name is
253
 
            <quote><literal>seckey.txt</literal></quote>.
254
 
          </para>
255
 
        </listitem>
256
 
      </varlistentry>
257
 
      
258
 
      <varlistentry>
259
 
        <term><option>--priority=<replaceable
260
 
        >STRING</replaceable></option></term>
261
 
        <listitem>
262
 
          <xi:include href="../mandos-options.xml"
263
 
                      xpointer="priority"/>
264
 
        </listitem>
265
 
      </varlistentry>
266
 
 
267
 
      <varlistentry>
268
 
        <term><option>--dh-bits=<replaceable
269
 
        >BITS</replaceable></option></term>
270
 
        <listitem>
271
 
          <para>
272
 
            Sets the number of bits to use for the prime number in the
273
 
            TLS Diffie-Hellman key exchange.  Default is 1024.
274
 
          </para>
275
 
        </listitem>
276
 
      </varlistentry>
277
 
      
278
 
      <varlistentry>
279
 
        <term><option>--debug</option></term>
280
 
        <listitem>
281
 
          <para>
282
 
            Enable debug mode.  This will enable a lot of output to
283
 
            standard error about what the program is doing.  The
284
 
            program will still perform all other functions normally.
285
 
          </para>
286
 
          <para>
287
 
            It will also enable debug mode in the Avahi and GnuTLS
288
 
            libraries, making them print large amounts of debugging
289
 
            output.
290
 
          </para>
291
 
        </listitem>
292
 
      </varlistentry>
293
 
      
294
 
      <varlistentry>
295
 
        <term><option>--help</option></term>
296
 
        <term><option>-?</option></term>
297
 
        <listitem>
298
 
          <para>
299
 
            Gives a help message about options and their meanings.
300
 
          </para>
301
 
        </listitem>
302
 
      </varlistentry>
303
 
      
304
 
      <varlistentry>
305
 
        <term><option>--usage</option></term>
306
 
        <listitem>
307
 
          <para>
308
 
            Gives a short usage message.
309
 
          </para>
310
 
        </listitem>
311
 
      </varlistentry>
312
 
 
313
 
      <varlistentry>
314
 
        <term><option>--version</option></term>
315
 
        <term><option>-V</option></term>
316
 
        <listitem>
317
 
          <para>
318
 
            Prints the program version.
319
 
          </para>
320
 
        </listitem>
321
 
      </varlistentry>
322
 
    </variablelist>
323
 
  </refsect1>
324
 
 
325
 
  <refsect1 id="overview">
326
 
    <title>OVERVIEW</title>
327
 
    <xi:include href="../overview.xml"/>
328
 
    <para>
329
 
      This program is the client part.  It is a plugin started by
330
 
      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
331
 
      <manvolnum>8mandos</manvolnum></citerefentry> which will run in
332
 
      an initial <acronym>RAM</acronym> disk environment.
333
 
    </para>
334
 
    <para>
335
 
      This program could, theoretically, be used as a keyscript in
336
 
      <filename>/etc/crypttab</filename>, but it would then be
337
 
      impossible to enter a password for the encrypted root disk at
338
 
      the console, since this program does not read from the console
339
 
      at all.  This is why a separate plugin does that, which will be
340
 
      run in parallell to this one by the plugin runner.
341
 
    </para>
342
 
  </refsect1>
343
 
  
344
 
  <refsect1 id="exit_status">
345
 
    <title>EXIT STATUS</title>
346
 
    <para>
347
 
      This program will exit with a successful (zero) exit status if a
348
 
      server could be found and the password received from it could be
349
 
      successfully decrypted and output on standard output.  The
350
 
      program will exit with a non-zero exit status only if a critical
351
 
      error occurs.  Otherwise, it will forever connect to new
352
 
      <application>Mandos</application> servers as they appear, trying
353
 
      to get a decryptable password.
354
 
    </para>
355
 
  </refsect1>
356
 
  
357
 
  <refsect1 id="environment">
358
 
    <title>ENVIRONMENT</title>
359
 
    <para>
360
 
      This program does not use any environment variables, not even
361
 
      the ones provided by <citerefentry><refentrytitle
362
 
      >cryptsetup</refentrytitle><manvolnum>8</manvolnum>
363
 
    </citerefentry>.
364
 
    </para>
365
 
  </refsect1>
366
 
  
367
 
  <refsect1 id="file">
368
 
    <title>FILES</title>
369
 
    <variablelist>
370
 
      <varlistentry>
371
 
        <term><filename>/conf/conf.d/mandos/pubkey.txt</filename
372
 
        ></term>
373
 
        <term><filename>/conf/conf.d/mandos/seckey.txt</filename
374
 
        ></term>
375
 
        <listitem>
376
 
          <para>
377
 
            OpenPGP public and private key files, in <quote>ASCII
378
 
            Armor</quote> format.  These are the default file names,
379
 
            they can be changed with the <option>--pubkey</option> and
380
 
            <option>--seckey</option> options.
381
 
          </para>
382
 
        </listitem>
383
 
      </varlistentry>
384
 
    </variablelist>
385
 
  </refsect1>
386
 
  
387
 
<!--   <refsect1 id="bugs"> -->
388
 
<!--     <title>BUGS</title> -->
389
 
<!--     <para> -->
390
 
<!--     </para> -->
391
 
<!--   </refsect1> -->
392
 
 
393
 
  <refsect1 id="example">
394
 
    <title>EXAMPLE</title>
395
 
    <para>
396
 
      Note that normally, command line options will not be given
397
 
      directly, but via options for the Mandos <citerefentry
398
 
      ><refentrytitle>plugin-runner</refentrytitle>
399
 
      <manvolnum>8mandos</manvolnum></citerefentry>.
400
 
    </para>
401
 
    <informalexample>
402
 
      <para>
403
 
        Normal invocation needs no options, if the network interface
404
 
        is <quote>eth0</quote>:
405
 
      </para>
406
 
      <para>
407
 
        <userinput>&COMMANDNAME;</userinput>
408
 
      </para>
409
 
    </informalexample>
410
 
    <informalexample>
411
 
      <para>
412
 
        Search for Mandos servers on another interface:
413
 
      </para>
414
 
      <para>
415
 
        <!-- do not wrap this line -->
416
 
        <userinput>&COMMANDNAME; --interface eth1</userinput>
417
 
      </para>
418
 
    </informalexample>
419
 
    <informalexample>
420
 
      <para>
421
 
        Run in debug mode, and use a custom key directory:
422
 
      </para>
423
 
      <para>
424
 
        <!-- do not wrap this line -->
425
 
        <userinput>&COMMANDNAME; --debug --keydir keydir</userinput>
426
 
      </para>
427
 
    </informalexample>
428
 
    <informalexample>
429
 
      <para>
430
 
        Run in debug mode, with a custom key directory, and do not use
431
 
        Zeroconf to locate a server; connect directly to the IPv6
432
 
        address <quote><systemitem class="ipaddress"
433
 
        >2001:db8:f983:bd0b:30de:ae4a:71f2:f672</systemitem></quote>,
434
 
        port 4711, using interface eth2:
435
 
      </para>
436
 
      <para>
437
 
 
438
 
<!-- do not wrap this line -->
439
 
<userinput>&COMMANDNAME; --debug --keydir keydir --connect 2001:db8:f983:bd0b:30de:ae4a:71f2:f672:4711 --interface eth2</userinput>
440
 
 
441
 
      </para>
442
 
    </informalexample>
443
 
  </refsect1>
444
 
 
445
 
  <refsect1 id="security">
446
 
    <title>SECURITY</title>
447
 
    <para>
448
 
    </para>
449
 
  </refsect1>
450
 
 
451
 
  <refsect1 id="see_also">
452
 
    <title>SEE ALSO</title>
453
 
    <para>
454
 
      <citerefentry><refentrytitle>mandos</refentrytitle>
455
 
      <manvolnum>8</manvolnum></citerefentry>,
456
 
      <citerefentry><refentrytitle>password-prompt</refentrytitle>
457
 
      <manvolnum>8mandos</manvolnum></citerefentry>,
458
 
      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
459
 
      <manvolnum>8mandos</manvolnum></citerefentry>
460
 
    </para>
461
 
    <itemizedlist>
462
 
      <listitem><para>
463
 
        <ulink url="http://www.zeroconf.org/">Zeroconf</ulink>
464
 
      </para></listitem>
465
 
      
466
 
      <listitem><para>
467
 
        <ulink url="http://www.avahi.org/">Avahi</ulink>
468
 
      </para></listitem>
469
 
      
470
 
      <listitem><para>
471
 
        <ulink
472
 
            url="http://www.gnu.org/software/gnutls/">GnuTLS</ulink>
473
 
      </para></listitem>
474
 
      
475
 
      <listitem><para>
476
 
        <ulink
477
 
        url="http://www.gnupg.org/related_software/gpgme/"
478
 
        >GPGME</ulink>
479
 
      </para></listitem>
480
 
      
481
 
      <listitem><para>
482
 
        <citation>RFC 4880: <citetitle>OpenPGP Message
483
 
        Format</citetitle></citation>
484
 
      </para></listitem>
485
 
      
486
 
      <listitem><para>
487
 
        <citation>RFC 5081: <citetitle>Using OpenPGP Keys for
488
 
        Transport Layer Security</citetitle></citation>
489
 
      </para></listitem>
490
 
      
491
 
      <listitem><para>
492
 
        <citation>RFC 4291: <citetitle>IP Version 6 Addressing
493
 
        Architecture</citetitle>, section 2.5.6, Link-Local IPv6
494
 
        Unicast Addresses</citation>
495
 
      </para></listitem>
496
 
    </itemizedlist>
497
 
  </refsect1>
498
 
 
499
 
</refentry>
500
 
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