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Viewing changes to plugins.d/password-request.xml

Committer: Teddy Hogeborn
Date: 2008-08-31 16:04:47 UTC
mfrom: (24.1.77 mandos)
Revision ID: teddy@fukt.bsnet.se-20080831160447-2xte5k90onspphki

Merge.

files modified:
Makefile

TODO

mandos-options.xml

mandos.xml

overview.xml

plugin-runner.c

plugin-runner.xml

plugins.d/password-prompt.xml

plugins.d/password-request.c

plugins.d/password-request.xml

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added added

removed removed

plugins.d/password-request.xml

"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [

<!ENTITY VERSION "1.0">

<!ENTITY COMMANDNAME "password-request">

<!ENTITY TIMESTAMP "2008-09-03">

<!ENTITY TIMESTAMP "2008-08-31">

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<title>DESCRIPTION</title>

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<para>

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<command>&COMMANDNAME;</command> is a client program that

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communicates with <citerefentry><refentrytitle

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

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to get a password. It uses IPv6 link-local addresses to get

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network connectivity, Zeroconf to find servers, and TLS with an

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OpenPGP key to ensure authenticity and confidentiality. It

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keeps running, trying all servers on the network, until it

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receives a satisfactory reply or a TERM signal is recieved.

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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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to run as a plugin of the <application>Mandos</application>

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<citerefentry><refentrytitle>plugin-runner</refentrytitle>

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<manvolnum>8mandos</manvolnum></citerefentry>, which runs in the

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initial <acronym>RAM</acronym> disk environment because it is

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specified as a <quote>keyscript</quote> in the <citerefentry>

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<refentrytitle>crypttab</refentrytitle><manvolnum>5</manvolnum>

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</citerefentry> file.

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</para>

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</refsect1>

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<title>PURPOSE</title>

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<para>

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

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rebooting</emphasis> of client host computer with an

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

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linkend="overview"/> for details.

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<command>&COMMANDNAME;</command> is a mandos plugin that works

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like a client program that through avahi detects mandos servers,

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sets up a gnutls connect and request a encrypted password. Any

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passwords given is automaticly decrypted and passed to

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cryptsetup.

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</para>

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</refsect1>

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<title>OPTIONS</title>

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<para>

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This program is commonly not invoked from the command line; it

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is normally started by the <application>Mandos</application>

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plugin runner, see <citerefentry><refentrytitle

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>plugin-runner</refentrytitle><manvolnum>8mandos</manvolnum>

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</citerefentry>. Any command line options this program accepts

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are therefore normally provided by the plugin runner, and not

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directly.

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Commonly not invoked as command lines but from configuration

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file of plugin runner.

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</para>

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<term><option>--connect=<replaceable

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>ADDRESS</replaceable><literal>:</literal><replaceable

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>IPADDR</replaceable><literal>:</literal><replaceable

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>PORT</replaceable></option></term>

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<term><option>-c

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<replaceable>ADDRESS</replaceable><literal>:</literal

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<replaceable>IPADDR</replaceable><literal>:</literal

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><replaceable>PORT</replaceable></option></term>

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<para>

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Do not use Zeroconf to locate servers. Connect directly

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to only one specified <application>Mandos</application>

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server. Note that an IPv6 address has colon characters in

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it, so the <emphasis>last</emphasis> colon character is

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assumed to separate the address from the port number.

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</para>

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<para>

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This option is normally only useful for testing and

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debugging.

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Connect directly to a specified mandos server

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</para>

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</listitem>

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</varlistentry>

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<term><option>--keydir=<replaceable

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

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

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<para>

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Directory to read the OpenPGP key files

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<filename>pubkey.txt</filename> and

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<filename>seckey.txt</filename> from. The default is

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<filename>/conf/conf.d/mandos</filename> (in the initial

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<acronym>RAM</acronym> disk environment).

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Directory where the openpgp keyring is

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</para>

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</listitem>

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</varlistentry>

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<para>

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Network interface that will be brought up and scanned for

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Mandos servers to connect to. The default it

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<quote><literal>eth0</literal></quote>.

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Interface that Avahi will connect through

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</para>

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</listitem>

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</varlistentry>

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<term><option>--pubkey=<replaceable

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>FILE</replaceable></option></term>

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<para>

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OpenPGP public key file base name. This will be combined

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with the directory from the <option>--keydir</option>

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option to form an absolute file name. The default name is

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<quote><literal>pubkey.txt</literal></quote>.

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Public openpgp key for gnutls authentication

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</para>

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</listitem>

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</varlistentry>

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<para>

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OpenPGP secret key file base name. This will be combined

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with the directory from the <option>--keydir</option>

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option to form an absolute file name. The default name is

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<quote><literal>seckey.txt</literal></quote>.

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Secret OpenPGP key for GnuTLS authentication

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</para>

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</listitem>

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</varlistentry>

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<term><option>--priority=<replaceable

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>STRING</replaceable></option></term>

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<xi:include href="../mandos-options.xml"

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xpointer="priority"/>

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<para>

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GnuTLS priority

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</para>

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</listitem>

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</varlistentry>

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>BITS</replaceable></option></term>

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<para>

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Sets the number of bits to use for the prime number in the

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TLS Diffie-Hellman key exchange. Default is 1024.

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DH bits to use in gnutls communication

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</para>

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</listitem>

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</varlistentry>

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

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<para>

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

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standard error about what the program is doing. The

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program will still perform all other functions normally.

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</para>

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<para>

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It will also enable debug mode in the Avahi and GnuTLS

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libraries, making them print large amounts of debugging

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output.

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Debug mode

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</para>

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</listitem>

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</varlistentry>

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<para>

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Gives a help message about options and their meanings.

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Gives a help message

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</para>

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</listitem>

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</varlistentry>

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

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<para>

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Gives a short usage message.

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Gives a short usage message

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</para>

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</listitem>

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</varlistentry>

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<para>

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Prints the program version.

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Prints the program version

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</para>

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</listitem>

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</varlistentry>

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</variablelist>

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</refsect1>

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<title>OVERVIEW</title>

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

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<para>

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This program is the client part. It is a plugin started by

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<citerefentry><refentrytitle>plugin-runner</refentrytitle>

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<manvolnum>8mandos</manvolnum></citerefentry> which will run in

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an initial <acronym>RAM</acronym> disk environment.

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</para>

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<para>

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This program could, theoretically, be used as a keyscript in

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<filename>/etc/crypttab</filename>, but it would then be

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impossible to enter a password for the encrypted root disk at

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the console, since this program does not read from the console

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at all. This is why a separate plugin does that, which will be

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run in parallell to this one by the plugin runner.

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</para>

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</refsect1>

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<title>EXIT STATUS</title>

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<para>

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This program will exit with a successful (zero) exit status if a

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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.

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</para>

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</refsect1>

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<title>ENVIRONMENT</title>

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<para>

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This program does not use any environment variables, not even

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the ones provided by <citerefentry><refentrytitle

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>cryptsetup</refentrytitle><manvolnum>8</manvolnum>

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</citerefentry>.

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</para>

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</refsect1>

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<title>FILES</title>

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<para>

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<ulink

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url="http://www.gnupg.org/related_software/gpgme/"

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>GPGME</ulink>

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url="http://www.gnupg.org/related_software/gpgme/">

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GPGME</ulink>

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</para></listitem>

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