mirror of
https://github.com/sigmasternchen/php-doc-en
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dff79c7193
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@166735 c90b9560-bf6c-de11-be94-00142212c4b1
88 lines
2.6 KiB
XML
88 lines
2.6 KiB
XML
<?xml version='1.0' encoding='iso-8859-1'?>
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<!-- $Revision: 1.2 $ -->
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<!-- Generated by xml_proto.php v2.0. Found in /scripts directory of phpdoc. -->
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<refentry id="function.tcpwrap-check">
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<refnamediv>
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<refname>tcpwrap_check</refname>
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<refpurpose>
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tcpwrap check
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</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>bool</type><methodname>tcpwrap_check</methodname>
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<methodparam><type>string</type><parameter>daemon</parameter></methodparam>
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<methodparam><type>string</type><parameter>address</parameter></methodparam>
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<methodparam choice="opt"><type>string</type><parameter>user</parameter></methodparam>
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<methodparam choice="opt"><type>bool</type><parameter>nodns</parameter></methodparam>
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</methodsynopsis>
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<para>
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This function consults /etc/hosts.allow and /etc/hosts.deny files to
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check if access to service <parameter>daemon</parameter> should be
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granted or denied for client with remote address
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<parameter>address</parameter> (and optional username
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<parameter>user</parameter>). <parameter>address</parameter> can be
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either IP address or domain name. <parameter>user</parameter> can be
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&null;.
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</para>
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<para>
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If <parameter>address</parameter> looks like domain name then DNS is
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used to resolve it to IP address; set <parameter>nodns</parameter> to
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&true; to avoid this.
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</para>
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<para>
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For more details please consult hosts_access(3) man page.
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</para>
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<para>
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This function returns &true; if access should be granted, &false; otherwise.
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</para>
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<example>
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<title><function>tcpwrap_check</function> example</title>
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<para>
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If your /etc/hosts.deny file contains:
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</para>
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<screen>
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<![CDATA[
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php: 127.0.0.1
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]]>
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</screen>
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<para>
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And your code looks like:
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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if (!tcpwrap_check('php', $_SERVER['REMOTE_ADDR'])) {
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die('You are not welcome here');
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}
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?>
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]]>
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</programlisting>
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<para>
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Then above code will deny all connections from localhost.
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</para>
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</example>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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