ibm-information-center/dist/eclipse/plugins/i5OS.ic.apis_5.4.0.1/gsk_environment_open.htm

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<title>gsk_environment_open()--Get a handle for an SSL environment</title>
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<h2>gsk_environment_open()--Get a handle for an SSL environment</h2>
<div class="box" style="width: 80%;">
<br>
<p>&nbsp;&nbsp;Syntax</p>
<pre>
#include &lt;gskssl.h&gt;
int gsk_environment_open(gsk_handle *<em>my_env_handle</em>);
</pre>
&nbsp;&nbsp;Service Program Name: QSYS/QSOSSLSR<br>
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&nbsp;&nbsp;Default Public Authority: *USE<br>
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&nbsp;&nbsp;Threadsafe: Yes<br>
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<p>The <strong>gsk_environment_open()</strong> function is used to get storage
for the SSL environment. This function call must be issued before any other gsk
function calls are issued. This call returns an SSL environment handle that
must be saved and used on subsequent gsk calls.</p>
<br>
<h3>Parameters</h3>
<dl>
<dt><strong>my_env_handle</strong>&nbsp;(Output)&nbsp;</dt>
<dd>A pointer to the SSL environment handle to be used for subsequent gsk
function calls.</dd>
</dl>
<br>
<h3>Authorities</h3>
<p>No authorization is required.</p>
<br>
<h3>Return Value</h3>
<p><strong>gsk_environment_open()</strong> returns an integer. Possible values
are:</p>
<dl>
<dt><em>[GSK_OK]</em></dt>
<dd><p><strong>gsk_environment_open()</strong> was successful.</p>
</dd>
<dt><em>[GSK_API_NOT_AVAILABLE]</em></dt>
<dd>
<img src="delta.gif" alt="Start of change">
<p>Digital Certificate Manager (DCM), 57xx-SS1 - OS400 Option 34 is not installed.</p>
<img src="deltaend.gif" alt="End of change">
</dd>
<dt><em>[GSK_INSUFFICIENT_STORAGE]</em></dt>
<dd><p>Not able to allocate storage for the requested operation.</p>
</dd>
<dt><em>[GSK_INTERNAL_ERROR]</em></dt>
<dd><p>An internal error occured during system processing.</p>
</dd>
<dt><em>[GSK_AS400_ERROR_INVALID_POINTER]</em></dt>
<dd><p>The <strong>my_env_handle</strong> pointer is not valid.</p></dd>
</dl>
<br>
<h3>Error Messages</h3>
<table width="100%" cellpadding="5">
<tr>
<th align="left" valign="top">Message ID</th>
<th align="left" valign="top">Error Message Text</th>
</tr>
<tr>
<td width="15%" valign="top">CPE3418 E</td>
<td width="85%" valign="top">Possible APAR condition or hardware failure.</td>
</tr>
<tr>
<td valign="top">CPF9872 E</td>
<td valign="top">Program or service program &amp;1 in library &amp;2 ended.
Reason code &amp;3.</td>
</tr>
<tr>
<td valign="top">CPFA081 E</td>
<td valign="top">Unable to set return value or error code.</td>
</tr>
</table>
<br>
<h3>Usage Notes</h3>
<ol type="1">
<li>After <strong>gsk_environment_open()</strong> returns with a GSK_OK return
value, attributes for the SSL environment have been set and can be retrieved
using any of the <strong>get</strong> function calls. The following is a list
of the defaulted values:
<ul>
<li><strong>GSK_V2_SESSION_TIMEOUT</strong> set to 100 seconds.</li>
<li><strong>GSK_V3_SESSION_TIMEOUT</strong> set to 86400 seconds (24
hours).</li>
<li><strong>GSK_HANDSHAKE_TIMEOUT</strong> set to 0 (wait forever).</li>
<li><strong>GSK_OS400_RECEIVE_TIMEOUT</strong> set to 0 (wait forever).</li>
<li><strong>GSK_SESSION_TYPE</strong> set to <em>GSK_CLIENT_SESSION</em>.</li>
<li><strong>GSK_KEYRING_LABEL</strong> set to use the default certificate from
the certificate store file.</li>
<li><strong>GSK_PROTOCOL_TLSV1</strong> set to
<em>GSK_PROTOCOL_TLSV1_ON</em>.</li>
<li><strong>GSK_PROTOCOL_SSLV3</strong> set to
<em>GSK_PROTOCOL_SSLV3_ON</em>.</li>
<li><strong>GSK_PROTOCOL_SSLV2</strong> set to
<em>GSK_PROTOCOL_SSLV2_ON</em>.</li>
<li>
<img src="delta.gif" alt="Start of change">
<strong>GSK_V2_CIPHER_SPECS</strong> set to the default SSL Version 2
cipher suite list.</li>
<li><strong>GSK_V3_CIPHER_SPECS</strong> set to the default SSL Version 3
cipher suite list.</li>
<img src="deltaend.gif" alt="End of change">
</ul>
<br>
</li>
<li>
<img src="delta.gif" alt="Start of change">
The default cipher suite list in preference order is as follows:
<img src="deltaend.gif" alt="End of change">
<ul>
<li><strong>GSK_V3_CIPHER_SPECS</strong> set to SSL Version 3 or TLS Version 1
default "04052F350A090306."</li>
<li><strong>GSK_V2_CIPHER_SPECS</strong> set to "137624."<br>
<br>
<p>See the usage notes in <a href=
"gsk_attribute_set_buffer.htm">gsk_attribute_set_buffer()</a> API for the
format of the ciphers.</p>
</li>
</ul>
</li>
</ol>
<br>
<h3>Related Information</h3>
<ul>
<li><a href="gsk_attribute_set_buffer.htm">gsk_attribute_set_buffer()</a>--Set
character information for an secure session or a SSL environment<br>
<br>
</li>
<li><a href="gsk_attribute_set_enum.htm">gsk_attribute_set_enum()</a>--Set
enumerated information for a secure session or an SSL environment<br>
<br>
</li>
<li><a href=
"gsk_attribute_set_numeric_value.htm">gsk_attribute_set_numeric_value()</a>--Set
numeric information for a secure session or an SSL environment<br>
<br>
</li>
<li><a href="gsk_environment_close.htm">gsk_environment_close()</a>--Close the SSL
environment<br>
<br>
</li>
<li><a href="gsk_environment_init.htm">gsk_environment_init()</a>--Initialize an
SSL environment<br>
<br>
</li>
<li><a href="gsk_strerror.htm">gsk_strerror()</a>--Retrieve GSK runtime error
message</li>
</ul>
<br>
<hr>
API introduced: V5R1
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