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  • Committer: Teddy Hogeborn
  • Date: 2014-08-20 21:46:38 UTC
  • Revision ID: teddy@recompile.se-20140820214638-k4naueej6hffdgfg
mandos-client: Bug fix: Check fork() return value.

When executing network hook scripts, check fork() return value.

* plugins.d/mandos-client.c (run_network_hooks): Bug fix: check if
                                                 fork() returns -1.

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plugins.d/mandos-client.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-client">
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<!ENTITY TIMESTAMP "2012-07-23">
 
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<!ENTITY TIMESTAMP "2014-06-22">
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<!ENTITY % common SYSTEM "../common.ent">
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%common;
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]>
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      <year>2008</year>
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      <year>2009</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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      <holder>Teddy Hogeborn</holder>
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      <holder>Björn Påhlsson</holder>
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    </copyright>
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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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            Normally, Zeroconf would be used to locate Mandos servers,
 
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            in which case this option would only be used when testing
 
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            and debugging.
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          </para>
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        </listitem>
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      </varlistentry>
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          <para>
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            <replaceable>NAME</replaceable> can be the string
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            <quote><literal>none</literal></quote>; this will make
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            <command>&COMMANDNAME;</command> not bring up
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            <emphasis>any</emphasis> interfaces specified
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            <emphasis>after</emphasis> this string.  This is not
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            recommended, and only meant for advanced users.
 
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            <command>&COMMANDNAME;</command> only bring up interfaces
 
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            specified <emphasis>before</emphasis> this string.  This
 
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            is not recommended, and only meant for advanced users.
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          </para>
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        </listitem>
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      </varlistentry>
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    </para>
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    <informalexample>
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      <para>
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        Normal invocation needs no options, if the network interface
 
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        Normal invocation needs no options, if the network interfaces
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        can be automatically determined:
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      </para>
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      <para>
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    </informalexample>
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    <informalexample>
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      <para>
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        Search for Mandos servers (and connect to them) using another
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        interface:
 
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        Search for Mandos servers (and connect to them) using one
 
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        specific interface:
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      </para>
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      <para>
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        <!-- do not wrap this line -->
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    <para>
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      It will also help if the checker program on the server is
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      configured to request something from the client which can not be
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      spoofed by someone else on the network, unlike unencrypted
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      <acronym>ICMP</acronym> echo (<quote>ping</quote>) replies.
 
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      spoofed by someone else on the network, like SSH server key
 
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      fingerprints, and unlike unencrypted <acronym>ICMP</acronym>
 
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      echo (<quote>ping</quote>) replies.
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    </para>
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    <para>
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      <emphasis>Note</emphasis>: This makes it completely insecure to