📄 function.tcpwrap-check.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Performs a tcpwrap check</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="ref.tcpwrap.html">TCP Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="book.yaz.html">YAZ</a></div> <div class="up"><a href="ref.tcpwrap.html">TCP Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.tcpwrap-check" class="refentry"> <div class="refnamediv"> <h1 class="refname">tcpwrap_check</h1> <p class="verinfo">(PECL tcpwrap:0.1-1.0)</p><p class="refpurpose"><span class="refname">tcpwrap_check</span> — <span class="dc-title">Performs a tcpwrap check</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>tcpwrap_check</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$daemon</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$address</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$user</tt></span> [, <span class="methodparam"><span class="type">bool</span> <tt class="parameter">$nodns</tt></span> ]] )</div> <p class="para rdfs-comment"> This function consults the <var class="filename">/etc/hosts.allow</var> and <var class="filename">/etc/hosts.deny</var> files to check if access to service <i><tt class="parameter">daemon</tt></i> should be granted or denied for a client. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">daemon</tt></i></span> <dd> <p class="para"> The service name. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">address</tt></i></span> <dd> <p class="para"> The client remote address. Can be either an IP address or a domain name. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">user</tt></i></span> <dd> <p class="para"> An optional user name. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">nodns</tt></i></span> <dd> <p class="para"> If <i><tt class="parameter">address</tt></i> looks like domain name then DNS is used to resolve it to IP address; set <i><tt class="parameter">nodns</tt></i> to <b><tt>TRUE</tt></b> to avoid this. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> This function returns <b><tt>TRUE</tt></b> if access should be granted, <b><tt>FALSE</tt></b> otherwise. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <div class="example"> <p><b>Example #1 Deny all connections from localhost</b></p> <div class="example-contents"><p> If your /etc/hosts.deny file contains: </p></div> <div class="example-contents"><pre><div class="cdata"><pre>php: 127.0.0.1</pre></div> </pre></div> <div class="example-contents"><p> And your code looks like: </p></div> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /></span><span style="color: #007700">if (!</span><span style="color: #0000BB">tcpwrap_check</span><span style="color: #007700">(</span><span style="color: #DD0000">'php'</span><span style="color: #007700">, </span><span style="color: #0000BB">$_SERVER</span><span style="color: #007700">[</span><span style="color: #DD0000">'REMOTE_ADDR'</span><span style="color: #007700">])) {<br /> die(</span><span style="color: #DD0000">'You are not welcome here'</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> For more details please consult hosts_access(3) man page. </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="ref.tcpwrap.html">TCP Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="book.yaz.html">YAZ</a></div> <div class="up"><a href="ref.tcpwrap.html">TCP Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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