69
58
Configuration file for the Mandos server
63
<synopsis>&CONFPATH;</synopsis>
79
66
<refsect1 id="description">
80
67
<title>DESCRIPTION</title>
82
The file &CONFPATH; is the configuration file for <citerefentry
69
The file &CONFPATH; is a configuration file for <citerefentry
83
70
><refentrytitle>mandos</refentrytitle>
84
<manvolnum>8</manvolnum></citerefentry>, read by it at startup,
85
where each client that will be able to use the service needs to
86
be listed. All clients listed will be regarded as valid, even
87
if a client was declared invalid in a previous run of the
71
<manvolnum>8</manvolnum></citerefentry>, read by it at startup.
72
The file needs to list all clients that should be able to use
73
the service. The settings in this file can be overridden by
74
runtime changes to the server, which it saves across restarts.
75
(See the section called <quote>PERSISTENT STATE</quote> in
76
<citerefentry><refentrytitle>mandos</refentrytitle><manvolnum
77
>8</manvolnum></citerefentry>.) However, any <emphasis
78
>changes</emphasis> to this file (including adding and removing
79
clients) will, at startup, override changes done during runtime.
91
The format starts with a section under [] which is either
82
The format starts with a <literal>[<replaceable>section
83
header</replaceable>]</literal> which is either
92
84
<literal>[DEFAULT]</literal> or <literal>[<replaceable>client
93
name</replaceable>]</literal>. Following the section is any
94
number of <quote><varname><replaceable>option</replaceable
85
name</replaceable>]</literal>. The <replaceable>client
86
name</replaceable> can be anything, and is not tied to a host
87
name. Following the section header is any number of
88
<quote><varname><replaceable>option</replaceable
95
89
></varname>=<replaceable>value</replaceable></quote> entries,
96
90
with continuations in the style of RFC 822. <quote><varname
97
91
><replaceable>option</replaceable></varname>: <replaceable
98
92
>value</replaceable></quote> is also accepted. Note that
99
93
leading whitespace is removed from values. Values can contain
100
94
format strings which refer to other values in the same section,
101
or values in the <quote>DEFAULT</quote> section. Lines
102
beginning with <quote>#</quote> or <quote>;</quote> are ignored
103
and may be used to provide comments.
95
or values in the <quote>DEFAULT</quote> section (see <xref
96
linkend="expansion"/>). Lines beginning with <quote>#</quote>
97
or <quote>;</quote> are ignored and may be used to provide
107
102
<refsect1 id="options">
108
103
<title>OPTIONS</title>
110
The possible options are:
105
<emphasis>Note:</emphasis> all option values are subject to
106
start time expansion, see <xref linkend="expansion"/>.
109
Unknown options are ignored. The used options are as follows:
116
<term><literal><varname>timeout</varname></literal></term>
118
<synopsis><literal>timeout = </literal><replaceable
122
The timeout is how long the server will wait for a
123
successful checker run until a client is considered
124
invalid - that is, ineligible to get the data this server
125
holds. By default Mandos will use 1 hour.
128
The <replaceable>TIME</replaceable> is specified as a
129
space-separated number of values, each of which is a
130
number and a one-character suffix. The suffix must be one
131
of <quote>d</quote>, <quote>s</quote>, <quote>m</quote>,
132
<quote>h</quote>, and <quote>w</quote> for days, seconds,
133
minutes, hours, and weeks, respectively. The values are
134
added together to give the total time value, so all of
135
<quote><literal>330s</literal></quote>,
136
<quote><literal>110s 110s 110s</literal></quote>, and
137
<quote><literal>5m 30s</literal></quote> will give a value
138
of five minutes and thirty seconds.
144
<term><literal><varname>interval</varname></literal></term>
146
<synopsis><literal>interval = </literal><replaceable
115
<term><option>approval_delay<literal> = </literal><replaceable
116
>TIME</replaceable></option></term>
119
This option is <emphasis>optional</emphasis>.
122
How long to wait for external approval before resorting to
123
use the <option>approved_by_default</option> value. The
124
default is <quote>PT0S</quote>, i.e. not to wait.
127
The format of <replaceable>TIME</replaceable> is the same
128
as for <varname>timeout</varname> below.
134
<term><option>approval_duration<literal> = </literal
135
><replaceable>TIME</replaceable></option></term>
138
This option is <emphasis>optional</emphasis>.
141
How long an external approval lasts. The default is 1
145
The format of <replaceable>TIME</replaceable> is the same
146
as for <varname>timeout</varname> below.
152
<term><option>approved_by_default<literal> = </literal
153
>{ <literal >1</literal> | <literal>yes</literal> | <literal
154
>true</literal> | <literal>on</literal> | <literal
155
>0</literal> | <literal>no</literal> | <literal
156
>false</literal> | <literal>off</literal> }</option></term>
159
Whether to approve a client by default after
160
the <option>approval_delay</option>. The default
161
is <quote>True</quote>.
167
<term><option>checker<literal> = </literal><replaceable
168
>COMMAND</replaceable></option></term>
171
This option is <emphasis>optional</emphasis>.
174
This option overrides the default shell command that the
175
server will use to check if the client is still up. Any
176
output of the command will be ignored, only the exit code
177
is checked: If the exit code of the command is zero, the
178
client is considered up. The command will be run using
179
<quote><command><filename>/bin/sh</filename>
180
<option>-c</option></command></quote>, so
181
<varname>PATH</varname> will be searched. The default
182
value for the checker command is <quote><literal
183
><command>fping</command> <option>-q</option> <option
184
>--</option> %%(host)s</literal></quote>. Note that
185
<command>mandos-keygen</command>, when generating output
186
to be inserted into this file, normally looks for an SSH
187
server on the Mandos client, and, if it find one, outputs
188
a <option>checker</option> option to check for the
189
client’s key fingerprint – this is more secure against
193
In addition to normal start time expansion, this option
194
will also be subject to runtime expansion; see <xref
195
linkend="expansion"/>.
201
<term><option>extended_timeout<literal> = </literal><replaceable
202
>TIME</replaceable></option></term>
205
This option is <emphasis>optional</emphasis>.
208
Extended timeout is an added timeout that is given once
209
after a password has been sent successfully to a client.
210
The timeout is by default longer than the normal timeout,
211
and is used for handling the extra long downtime while a
212
machine is booting up. Time to take into consideration
213
when changing this value is file system checks and quota
214
checks. The default value is 15 minutes.
217
The format of <replaceable>TIME</replaceable> is the same
218
as for <varname>timeout</varname> below.
224
<term><option>fingerprint<literal> = </literal
225
><replaceable>HEXSTRING</replaceable></option></term>
228
This option is <emphasis>required</emphasis>.
231
This option sets the OpenPGP fingerprint that identifies
232
the public key that clients authenticate themselves with
233
through TLS. The string needs to be in hexidecimal form,
234
but spaces or upper/lower case are not significant.
240
<term><option><literal>host = </literal><replaceable
241
>STRING</replaceable></option></term>
244
This option is <emphasis>optional</emphasis>, but highly
245
<emphasis>recommended</emphasis> unless the
246
<option>checker</option> option is modified to a
247
non-standard value without <quote>%%(host)s</quote> in it.
250
Host name for this client. This is not used by the server
251
directly, but can be, and is by default, used by the
252
checker. See the <option>checker</option> option.
258
<term><option>interval<literal> = </literal><replaceable
259
>TIME</replaceable></option></term>
262
This option is <emphasis>optional</emphasis>.
150
265
How often to run the checker to confirm that a client is
151
266
still up. <emphasis>Note:</emphasis> a new checker will
152
267
not be started if an old one is still running. The server
153
will wait for a checker to complete until the above
268
will wait for a checker to complete until the below
154
269
<quote><varname>timeout</varname></quote> occurs, at which
155
time the client will be marked invalid, and any running
156
checker killed. The default interval is 5 minutes.
270
time the client will be disabled, and any running checker
271
killed. The default interval is 2 minutes.
159
274
The format of <replaceable>TIME</replaceable> is the same
160
as for <varname>timeout</varname> above.
166
<term><literal>checker</literal></term>
169
This option allows you to override the default shell
170
command that the server will use to check up if the client
171
is still up. By default mandos will "fping -q -- %%(host)s"
177
<term><literal>fingerprint</literal></term>
180
This option sets the openpgp fingerprint that identifies
181
the public certificate that clients authenticates themself
182
through gnutls. The string need to be in hex-decimal form.
188
<term><literal>secret</literal></term>
191
Base 64 encoded OpenPGP encrypted password encrypted by
192
the clients openpgp certificate.
198
<term><literal>secfile</literal></term>
201
Base 64 encoded OpenPGP encrypted password encrypted by
202
the clients openpgp certificate as a binary file.
208
<term><literal>host</literal></term>
211
Host name that can be used in for checking that the client is up.
217
<term><literal>checker</literal></term>
220
Shell command that the server will use to check up if a
227
<term><literal>timeout</literal></term>
230
Duration that a client can be down whitout be removed from
275
as for <varname>timeout</varname> below.
281
<term><option>secfile<literal> = </literal><replaceable
282
>FILENAME</replaceable></option></term>
285
This option is only used if <option>secret</option> is not
286
specified, in which case this option is
287
<emphasis>required</emphasis>.
290
Similar to the <option>secret</option>, except the secret
291
data is in an external file. The contents of the file
292
should <emphasis>not</emphasis> be base64-encoded, but
293
will be sent to clients verbatim.
296
File names of the form <filename>~user/foo/bar</filename>
297
and <filename>$<envar>ENVVAR</envar>/foo/bar</filename>
304
<term><option>secret<literal> = </literal><replaceable
305
>BASE64_ENCODED_DATA</replaceable></option></term>
308
If this option is not specified, the <option
309
>secfile</option> option is <emphasis>required</emphasis>
313
If present, this option must be set to a string of
314
base64-encoded binary data. It will be decoded and sent
315
to the client matching the above
316
<option>fingerprint</option>. This should, of course, be
317
OpenPGP encrypted data, decryptable only by the client.
318
The program <citerefentry><refentrytitle><command
319
>mandos-keygen</command></refentrytitle><manvolnum
320
>8</manvolnum></citerefentry> can, using its
321
<option>--password</option> option, be used to generate
325
Note: this value of this option will probably be very
326
long. A useful feature to avoid having unreadably-long
327
lines is that a line beginning with white space adds to
328
the value of the previous line, RFC 822-style.
334
<term><option>timeout<literal> = </literal><replaceable
335
>TIME</replaceable></option></term>
338
This option is <emphasis>optional</emphasis>.
341
The timeout is how long the server will wait, after a
342
successful checker run, until a client is disabled and not
343
allowed to get the data this server holds. By default
344
Mandos will use 5 minutes. See also the
345
<option>extended_timeout</option> option.
348
The <replaceable>TIME</replaceable> is specified as an RFC
349
3339 duration; for example
350
<quote><literal>P1Y2M3DT4H5M6S</literal></quote> meaning
351
one year, two months, three days, four hours, five
352
minutes, and six seconds. Some values can be omitted, see
353
RFC 3339 Appendix A for details.
359
<term><option>enabled<literal> = </literal>{ <literal
360
>1</literal> | <literal>yes</literal> | <literal>true</literal
361
> | <literal >on</literal> | <literal>0</literal> | <literal
362
>no</literal> | <literal>false</literal> | <literal
363
>off</literal> }</option></term>
366
Whether this client should be enabled by default. The
367
default is <quote>true</quote>.
239
375
<refsect1 id="expansion">
240
376
<title>EXPANSION</title>
271
407
<quote><literal>%%(<replaceable>foo</replaceable>)s</literal
272
408
></quote> will be replaced by the value of the attribute
273
409
<varname>foo</varname> of the internal
274
<quote><classname>Client</classname></quote> object. See the
275
source code for details, and let the authors know of any
276
attributes that are useful so they may be preserved to any new
277
versions of this software.
410
<quote><classname>Client</classname></quote> object in the
411
Mandos server. The currently allowed values for
412
<replaceable>foo</replaceable> are:
413
<quote><literal>approval_delay</literal></quote>,
414
<quote><literal>approval_duration</literal></quote>,
415
<quote><literal>created</literal></quote>,
416
<quote><literal>enabled</literal></quote>,
417
<quote><literal>expires</literal></quote>,
418
<quote><literal>fingerprint</literal></quote>,
419
<quote><literal>host</literal></quote>,
420
<quote><literal>interval</literal></quote>,
421
<quote><literal>last_approval_request</literal></quote>,
422
<quote><literal>last_checked_ok</literal></quote>,
423
<quote><literal>last_enabled</literal></quote>,
424
<quote><literal>name</literal></quote>,
425
<quote><literal>timeout</literal></quote>, and, if using
426
D-Bus, <quote><literal>dbus_object_path</literal></quote>.
427
See the source code for details. <emphasis role="strong"
428
>Currently, <emphasis>none</emphasis> of these attributes
429
except <quote><literal>host</literal></quote> are guaranteed
430
to be valid in future versions.</emphasis> Therefore, please
431
let the authors know of any attributes that are useful so they
432
may be preserved to any new versions of this software.
280
435
Note that this means that, in order to include an actual
281
436
percent character (<quote>%</quote>) in a
282
<varname>checker</varname> options, <emphasis>four</emphasis>
437
<varname>checker</varname> option, <emphasis>four</emphasis>
283
438
percent characters in a row (<quote>%%%%</quote>) must be
284
439
entered. Also, a bad format here will lead to an immediate
285
440
but <emphasis>silent</emphasis> run-time fatal exit; debug
286
mode is needed to track down an error of this kind.
441
mode is needed to expose an error of this kind.
292
447
<refsect1 id="files">
293
448
<title>FILES</title>