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  • Committer: Teddy Hogeborn
  • Date: 2024-09-09 04:24:39 UTC
  • mto: This revision was merged to the branch mainline in revision 410.
  • Revision ID: teddy@recompile.se-20240909042439-j85mr20uli2hnyis
Eliminate compiler warnings

Many programs use nested functions, which now result in a linker
warning about executable stack.  Hide this warning.  Also, rewrite a
loop in the plymouth plugin to avoid warning about signed overflow.
This change also makes the plugin pick the alphabetically first
process entry instead of the last, in case many plymouth processes are
found (which should be unlikely).

* Makefile (plugin-runner, dracut-module/password-agent,
  plugins.d/password-prompt, plugins.d/mandos-client,
  plugins.d/plymouth): New target; set LDFLAGS to add "-Xlinker
  --no-warn-execstack".
* plugins.d/plymouth.c (get_pid): When no pid files are found, and we
  are looking through the process list, go though it from the start
  instead of from the end, i.e. in normal alphabetical order and not
  in reverse order.

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mandos-keygen.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-keygen">
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<!ENTITY TIMESTAMP "2012-01-01">
 
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<!ENTITY TIMESTAMP "2019-07-18">
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<!ENTITY % common SYSTEM "common.ent">
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%common;
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]>
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    <copyright>
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      <year>2008</year>
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      <year>2009</year>
 
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      <year>2010</year>
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      <year>2011</year>
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      <year>2012</year>
 
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      <year>2013</year>
 
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      <year>2014</year>
 
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      <year>2015</year>
 
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      <year>2016</year>
 
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      <year>2017</year>
 
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      <year>2018</year>
 
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      <year>2019</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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        <replaceable>TIME</replaceable></option></arg>
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      </group>
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      <sbr/>
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      <arg><option>--force</option></arg>
 
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      <group>
 
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        <arg choice="plain"><option>--tls-keytype
 
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        <replaceable>KEYTYPE</replaceable></option></arg>
 
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        <arg choice="plain"><option>-T
 
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        <replaceable>KEYTYPE</replaceable></option></arg>
 
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      </group>
 
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      <sbr/>
 
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      <group>
 
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        <arg choice="plain"><option>--force</option></arg>
 
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        <arg choice="plain"><option>-f</option></arg>
 
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      </group>
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    </cmdsynopsis>
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    <cmdsynopsis>
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      <command>&COMMANDNAME;</command>
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        <arg choice="plain"><option>-n
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        <replaceable>NAME</replaceable></option></arg>
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      </group>
 
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      <group>
 
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        <arg choice="plain"><option>--no-ssh</option></arg>
 
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        <arg choice="plain"><option>-S</option></arg>
 
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      </group>
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    </cmdsynopsis>
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    <cmdsynopsis>
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      <command>&COMMANDNAME;</command>
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    <title>DESCRIPTION</title>
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    <para>
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      <command>&COMMANDNAME;</command> is a program to generate the
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      OpenPGP key used by
 
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      TLS and OpenPGP keys used by
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      <citerefentry><refentrytitle>mandos-client</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>.  The key is
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      normally written to /etc/mandos for later installation into the
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      initrd image, but this, and most other things, can be changed
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      with command line options.
 
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      <manvolnum>8mandos</manvolnum></citerefentry>.  The keys are
 
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      normally written to /etc/keys/mandos for later installation into
 
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      the initrd image, but this, and most other things, can be
 
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      changed with command line options.
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    </para>
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    <para>
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      This program can also be used with the
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        <replaceable>DIRECTORY</replaceable></option></term>
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        <listitem>
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          <para>
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            Target directory for key files.  Default is
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            <filename class="directory">/etc/mandos</filename>.
 
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            Target directory for key files.  Default is <filename
 
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            class="directory">/etc/keys/mandos</filename>.
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          </para>
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        </listitem>
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      </varlistentry>
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        <replaceable>TYPE</replaceable></option></term>
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        <listitem>
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          <para>
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            Key type.  Default is <quote>DSA</quote>.
 
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            OpenPGP key type.  Default is <quote>RSA</quote>.
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          </para>
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        </listitem>
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      </varlistentry>
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        <replaceable>BITS</replaceable></option></term>
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        <listitem>
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          <para>
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            Key length in bits.  Default is 2048.
 
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            OpenPGP key length in bits.  Default is 4096.
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          </para>
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        </listitem>
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      </varlistentry>
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        <replaceable>KEYTYPE</replaceable></option></term>
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        <listitem>
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          <para>
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            Subkey type.  Default is <quote>ELG-E</quote> (Elgamal
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            encryption-only).
 
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            OpenPGP subkey type.  Default is <quote>RSA</quote>
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          </para>
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        </listitem>
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      </varlistentry>
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        <replaceable>BITS</replaceable></option></term>
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        <listitem>
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          <para>
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            Subkey length in bits.  Default is 2048.
 
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            OpenPGP subkey length in bits.  Default is 4096.
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          </para>
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        </listitem>
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      </varlistentry>
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        <replaceable>TEXT</replaceable></option></term>
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        <listitem>
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          <para>
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            Comment field for key.  The default value is
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            <quote><literal>Mandos client key</literal></quote>.
 
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            Comment field for key.  Default is empty.
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          </para>
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        </listitem>
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      </varlistentry>
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      </varlistentry>
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      <varlistentry>
 
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        <term><option>--tls-keytype
 
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        <replaceable>KEYTYPE</replaceable></option></term>
 
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        <term><option>-T
 
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        <replaceable>KEYTYPE</replaceable></option></term>
 
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        <listitem>
 
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          <para>
 
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            TLS key type.  Default is <quote>ed25519</quote>
 
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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>--force</option></term>
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        <term><option>-f</option></term>
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        <listitem>
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        <listitem>
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          <para>
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            Prompt for a password and encrypt it with the key already
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            present in either <filename>/etc/mandos</filename> or the
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            directory specified with the <option>--dir</option>
 
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            present in either <filename>/etc/keys/mandos</filename> or
 
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            the directory specified with the <option>--dir</option>
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            option.  Outputs, on standard output, a section suitable
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            for inclusion in <citerefentry><refentrytitle
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            >mandos-clients.conf</refentrytitle><manvolnum
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            >8</manvolnum></citerefentry>.  The host name or the name
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            specified with the <option>--name</option> option is used
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            for the section header.  All other options are ignored,
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            and no key is created.
 
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            and no key is created.  Note: white space is stripped from
 
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            the beginning and from the end of the password; See <xref
 
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            linkend="bugs"/>.
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          </para>
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        </listitem>
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      </varlistentry>
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        <listitem>
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          <para>
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            The same as <option>--password</option>, but read from
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            <replaceable>FILE</replaceable>, not the terminal.
 
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            <replaceable>FILE</replaceable>, not the terminal, and
 
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            white space is not stripped from the password in any way.
 
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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>--no-ssh</option></term>
 
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        <term><option>-S</option></term>
 
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        <listitem>
 
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          <para>
 
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            When <option>--password</option> or
 
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            <option>--passfile</option> is given, this option will
 
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            prevent <command>&COMMANDNAME;</command> from calling
 
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            <command>ssh-keyscan</command> to get an SSH fingerprint
 
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            for this host and, if successful, output suitable config
 
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            options to use this fingerprint as a
 
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            <option>checker</option> option in the output.  This is
 
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            otherwise the default behavior.
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          </para>
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        </listitem>
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      </varlistentry>
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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 a small utility to generate new OpenPGP keys for
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      new Mandos clients, and to generate sections for inclusion in
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      <filename>clients.conf</filename> on the server.
 
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      This program is a small utility to generate new TLS and OpenPGP
 
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      keys for new Mandos clients, and to generate sections for
 
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      inclusion in <filename>clients.conf</filename> on the server.
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    </para>
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  </refsect1>
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    </para>
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    <variablelist>
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      <varlistentry>
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        <term><filename>/etc/mandos/seckey.txt</filename></term>
 
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        <term><filename>/etc/keys/mandos/seckey.txt</filename></term>
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        <listitem>
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          <para>
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            OpenPGP secret key file which will be created or
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        </listitem>
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      </varlistentry>
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      <varlistentry>
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        <term><filename>/etc/mandos/pubkey.txt</filename></term>
 
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        <term><filename>/etc/keys/mandos/pubkey.txt</filename></term>
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        <listitem>
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          <para>
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            OpenPGP public key file which will be created or
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        </listitem>
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      </varlistentry>
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      <varlistentry>
 
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        <term><filename>/etc/keys/mandos/tls-privkey.pem</filename></term>
 
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        <listitem>
 
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          <para>
 
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            Private key file which will be created or overwritten.
 
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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><filename>/etc/keys/mandos/tls-pubkey.pem</filename></term>
 
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        <listitem>
 
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          <para>
 
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            Public key file which will be created or overwritten.
 
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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><filename class="directory">/tmp</filename></term>
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        <listitem>
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          <para>
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    </variablelist>
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  </refsect1>
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<!--   <refsect1 id="bugs"> -->
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<!--     <title>BUGS</title> -->
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<!--     <para> -->
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<!--     </para> -->
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<!--   </refsect1> -->
 
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  <refsect1 id="bugs">
 
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    <title>BUGS</title>
 
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    <para>
 
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      The <option>--password</option>/<option>-p</option> option
 
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      strips white space from the start and from the end of the
 
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      password before using it.  If this is a problem, use the
 
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      <option>--passfile</option> option instead, which does not do
 
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      this.
 
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    </para>
 
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    <xi:include href="bugs.xml"/>
 
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  </refsect1>
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  <refsect1 id="example">
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    <title>EXAMPLE</title>
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    </informalexample>
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    <informalexample>
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      <para>
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        Prompt for a password, encrypt it with the key in <filename
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        class="directory">/etc/mandos</filename> and output a section
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        suitable for <filename>clients.conf</filename>.
 
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        Prompt for a password, encrypt it with the keys in <filename
 
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        class="directory">/etc/keys/mandos</filename> and output a
 
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        section suitable for <filename>clients.conf</filename>.
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      </para>
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      <para>
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        <userinput>&COMMANDNAME; --password</userinput>
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    </informalexample>
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    <informalexample>
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      <para>
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        Prompt for a password, encrypt it with the key in the
 
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        Prompt for a password, encrypt it with the keys in the
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        <filename>client-key</filename> directory and output a section
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        suitable for <filename>clients.conf</filename>.
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      </para>
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      <citerefentry><refentrytitle>mandos</refentrytitle>
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      <manvolnum>8</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>mandos-client</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>
 
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      <manvolnum>8mandos</manvolnum></citerefentry>,
 
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      <citerefentry><refentrytitle>ssh-keyscan</refentrytitle>
 
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      <manvolnum>1</manvolnum></citerefentry>
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    </para>
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  </refsect1>
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