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<title>BIO_parse_hostserv</title>
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<ul id="index">
  <li><a href="#NAME">NAME</a></li>
  <li><a href="#SYNOPSIS">SYNOPSIS</a></li>
  <li><a href="#DESCRIPTION">DESCRIPTION</a></li>
  <li><a href="#RETURN-VALUES">RETURN VALUES</a></li>
  <li><a href="#SEE-ALSO">SEE ALSO</a></li>
  <li><a href="#COPYRIGHT">COPYRIGHT</a></li>
</ul>

<h1 id="NAME">NAME</h1>

<p>BIO_hostserv_priorities, BIO_parse_hostserv - utility routines to parse a standard host and service string</p>

<h1 id="SYNOPSIS">SYNOPSIS</h1>

<pre><code> #include &lt;openssl/bio.h&gt;

 enum BIO_hostserv_priorities {
     BIO_PARSE_PRIO_HOST, BIO_PARSE_PRIO_SERV
 };
 int BIO_parse_hostserv(const char *hostserv, char **host, char **service,
                        enum BIO_hostserv_priorities hostserv_prio);</code></pre>

<h1 id="DESCRIPTION">DESCRIPTION</h1>

<p>BIO_parse_hostserv() will parse the information given in <b>hostserv</b>, create strings with the hostname and service name and give those back via <b>host</b> and <b>service</b>. Those will need to be freed after they are used. <b>hostserv_prio</b> helps determine if <b>hostserv</b> shall be interpreted primarily as a hostname or a service name in ambiguous cases.</p>

<p>The syntax the BIO_parse_hostserv() recognises is:</p>

<pre><code> host + &#39;:&#39; + service
 host + &#39;:&#39; + &#39;*&#39;
 host + &#39;:&#39;
        &#39;:&#39; + service
 &#39;*&#39;  + &#39;:&#39; + service
 host
 service</code></pre>

<p>The host part can be a name or an IP address. If it&#39;s a IPv6 address, it MUST be enclosed in brackets, such as &#39;[::1]&#39;.</p>

<p>The service part can be a service name or its port number.</p>

<p>The returned values will depend on the given <b>hostserv</b> string and <b>hostserv_prio</b>, as follows:</p>

<pre><code> host + &#39;:&#39; + service  =&gt; *host = &quot;host&quot;, *service = &quot;service&quot;
 host + &#39;:&#39; + &#39;*&#39;      =&gt; *host = &quot;host&quot;, *service = NULL
 host + &#39;:&#39;            =&gt; *host = &quot;host&quot;, *service = NULL
        &#39;:&#39; + service  =&gt; *host = NULL, *service = &quot;service&quot;
  &#39;*&#39; + &#39;:&#39; + service  =&gt; *host = NULL, *service = &quot;service&quot;

 in case no &#39;:&#39; is present in the string, the result depends on
 hostserv_prio, as follows:

 when hostserv_prio == BIO_PARSE_PRIO_HOST
 host                 =&gt; *host = &quot;host&quot;, *service untouched

 when hostserv_prio == BIO_PARSE_PRIO_SERV
 service              =&gt; *host untouched, *service = &quot;service&quot;</code></pre>

<h1 id="RETURN-VALUES">RETURN VALUES</h1>

<p>BIO_parse_hostserv() returns 1 on success or 0 on error.</p>

<h1 id="SEE-ALSO">SEE ALSO</h1>

<p><a href="../man3/BIO_ADDRINFO.html">BIO_ADDRINFO(3)</a></p>

<h1 id="COPYRIGHT">COPYRIGHT</h1>

<p>Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.</p>

<p>Licensed under the OpenSSL license (the &quot;License&quot;). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p>


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