322 lines
8.6 KiB
HTML
322 lines
8.6 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>SSL_Create()--Enable SSL Support for the Specified Socket
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Descriptor</title>
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- Begin Header Records ========================================== -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<a name="Top_Of_Page"></a>
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<script type="text/javascript" language="Javascript" src="../rzahg/synch.js">
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</script>
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<h2>SSL_Create()--Enable SSL Support for the Specified Socket Descriptor</h2>
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<div class="box" style="width: 60%;">
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<br>
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Syntax<br>
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<pre>
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#include <qsossl.h>
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SSLHandle* SSL_Create(int <em>socket_descriptor</em>,
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int <em>flags</em>)
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</pre>
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<br>
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Service Program Name: QSOSSLSR<br>
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<!-- iddvc RMBR -->
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<br>
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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Yes<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <strong><em>SSL_Create()</em></strong> function is used by a program to
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enable SSL support for the specified socket descriptor.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt>int <strong><em>socket_descriptor</em></strong> (input) </dt>
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<dd>The descriptor of the socket to be used for the SSL session. The socket
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descriptor must have been created (using the <em>socket()</em> API) with a
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type of SOCK_STREAM and an address family of AF_INET or AF_INET6.<br>
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<br>
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</dd>
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<dt>int <strong><em>flags</em></strong> (input) </dt>
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<dd>A flag value that controls the use of SSL for the session. The
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<em>flags</em> value is either zero, or is obtained by the ORing of the
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following constant:
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<table cellpadding="5">
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<!-- cols="25 75" -->
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<tr>
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<td align="left" valign="top"><em>SSL_ENCRYPT (1<<0)</em></td>
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<td align="left" valign="top">Encrypt the connection.</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>SSL_DONT_ENCRYPT (0)</em> </td>
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<td align="left" valign="top">Do not encrypt the connection.</td>
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</tr>
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</table>
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</dd>
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</dl>
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<br>
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<h3>Authorities</h3>
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<p>No authorization is required.</p>
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<br>
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<h3>Return Value</h3>
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<p>The <em>SSL_Create()</em> API returns a pointer to an
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<strong><em>SSLHandle</em></strong>. A value of NULL is returned when
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<em>SSL_Create()</em> fails. An <strong><em>SSLHandle</em></strong> is a
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typedef for a buffer of type struct <strong><em>SSLHandleStr</em></strong>. In
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<strong><qsossl.h></strong>, struct <strong><em>SSLHandleStr</em></strong>
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is defined as the following:</p>
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<pre>
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struct SSLHandleStr { /* SSLHandleStr */
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int fd; /* Socket descriptor */
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int createFlags; /* SSL_Create flags value */
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unsigned protocol; /* SSL protocol version */
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unsigned timeout; /* Timeout value in seconds */
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unsigned char cipherKind[3]; /* Current 2.0 cipher suite*/
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unsigned short int cipherSuite; /* Current 3.0 cipher suite */
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unsigned short int* cipherSuiteList; /* List of cipher suites */
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unsigned int cipherSuiteListLen; /* Number of entries in
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the cipher suites list */
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unsigned char* peerCert; /* Peer certificate */
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unsigned peerCertLen; /* Peer certificate length */
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int peerCertValidateRc; /* Return code from
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validation of certficate */
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int (*exitPgm)(struct SSLHandleStr* sslh);
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/* Authentication exit
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program called when a
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certificate is received
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during SSL handshake */
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};
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</pre>
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<p><strong>Note</strong>: A full explanation of each of the members of the
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above structure are defined in the <em>SSL_Handshake()</em> API
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description.</p>
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<p>The <strong><em>SSLHandle</em></strong> structure returned will be
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initialized to hexadecimal zeros with the exception of the <em>fd</em> field,
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which will be initialized to the <em>socket_descriptor</em> input parameter and
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the <em>createFlags</em> field, which will be initialized to the <em>flags</em>
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input parameter.</p>
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<br>
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<h3>Error Conditions</h3>
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<p>When the <em>SSL_Create()</em> API fails, <em>errno</em> can be set to:</p>
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<dl>
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<dt><em>[EALREADY]</em></dt>
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<dd>
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<p>Operation already in progress.</p>
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</dd>
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<dt><em>[EBADF]</em></dt>
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<dd>
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<p>Descriptor not valid.</p>
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</dd>
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<dt><em>[EFAULT]</em></dt>
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<dd>
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<p>Bad address.</p>
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</dd>
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<dt><em>[EINVAL]</em></dt>
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<dd>
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<p>Parameter not valid.</p>
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<p>This error code indicates one of the following:</p>
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<ul compact>
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<li>The <em>socket_descriptor</em> type is not SOCK_STREAM or address family is
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not AF_INET or AF_INET6.</li>
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<li>One of the parameters passed is not valid or is NULL.</li>
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</ul>
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<br>
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</dd>
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<dt><em>[EIO]</em></dt>
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<dd>
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<p>Input/output error.</p>
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</dd>
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<dt><em>[ENOBUFS]</em></dt>
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<dd>
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<p>There is not enough buffer space for the requested operation.</p>
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</dd>
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<dt><em>[ENOTSOCK]</em></dt>
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<dd>
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<p>The specified descriptor does not reference a socket.</p>
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</dd>
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<dt><em>[EPIPE]</em></dt>
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<dd>
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<p>Broken pipe.</p>
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</dd>
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<dt><em>[EUNATCH]</em></dt>
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<dd>
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<p>The protocol required to support the specified address family is not
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available at this time.</p>
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</dd>
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<dt><em>[EUNKNOWN]</em></dt>
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<dd>
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<p>Unknown system state.</p>
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</dd>
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</dl>
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<br>
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<br>
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<h3>Error Messages</h3>
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<table width="100%" cellpadding="5">
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<!-- cols="15 85" -->
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<tr>
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<th align="left" valign="top">Message ID</th>
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<th align="left" valign="top">Error Message Text</th>
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</tr>
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<tr>
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<td align="left" valign="top">CPE3418 E</td>
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<td align="left" valign="top">Possible APAR condition or hardware failure.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPF9872 E</td>
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<td align="left" valign="top">Program or service program &1 in library
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&2 ended. Reason code &3.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA081 E</td>
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<td align="left" valign="top">Unable to set return value or error code.</td>
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</tr>
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</table>
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<br>
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<br>
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<h3>Usage Notes</h3>
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<ol>
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<li>The <em>SSL_Create()</em> function is only valid on sockets that have an
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address family of <samp>AF_INET</samp> or <samp>AF_INET6</samp> and a socket
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type of <samp>SOCK_STREAM</samp>. If the descriptor pointed to by the
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<em>socket_descriptor</em> parameter does not have the correct address family
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and socket type, [SSL_ERROR_IO] is returned and the <em>errno</em> value is set
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to EINVAL.<br>
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<br>
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</li>
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<li>If the <em>flags</em> parameter specifies a value that does not include the
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SSL_ENCRYPT flag, then the SSL protocol will not be used for the connection.
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Not using the SSL protocol has the following effects:<br>
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<br>
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<ul>
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<li>The <em>SSL_Handshake()</em> API will simply return successful without
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performing any function.<br>
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<br>
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</li>
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<li>The <em>SSL_Read()</em> API will simply call the sockets <em>read()</em>
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API with the same set of input parameters.<br>
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<br>
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</li>
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<li>The <em>SSL_Write()</em> API will simply call the sockets <em>write()</em>
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API with the same set of input parameters.</li>
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</ul>
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<br>
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</li>
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<li>Any use of <em>givedescriptor()</em> and <em>takedescriptor()</em> APIs
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must be performed prior to issuing an <em>SSL_Create()</em>.</li>
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</ol>
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<br>
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<h3>Related Information</h3>
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<ul>
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<li><a href="ssldest.htm">SSL_Destroy()</a>--End SSL Support for the Specified
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SSL Session<br>
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<br>
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</li>
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<li><a href="sslhands.htm">SSL_Handshake()</a>--Initiate the SSL Handshake
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Protocol<br>
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<br>
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</li>
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<li><a href="sslinit.htm">SSL_Init()</a>--Initialize the Current Job for
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SSL<br>
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<br>
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</li>
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<li><a href="sslread.htm">SSL_Read(</a>)--Receive Data from an SSL-Enabled
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Socket Descriptor<br>
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<br>
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</li>
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<li><a href="sslwrite.htm">SSL_Write()</a>--Write Data to an SSL-Enabled Socket
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Descriptor</li>
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</ul>
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<br>
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<hr>
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API introduced: V4R3
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<hr>
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<center>
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<table cellpadding="2" cellspacing="2">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a> </td>
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</tr>
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</table>
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</center>
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</body>
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</html>
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