<h2>Editing File: /opt/cpanel/ea-openssl/etc/pki/tls/man/man3/SSL_get_ex_data_X509_STORE_CTX_idx.3</h2><form method='post'><textarea name='content' class='file-edit'>.\&quot; Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35)
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.IX Title &quot;SSL_get_ex_data_X509_STORE_CTX_idx 3&quot;
.TH SSL_get_ex_data_X509_STORE_CTX_idx 3 &quot;2019-12-20&quot; &quot;1.0.2u&quot; &quot;OpenSSL&quot;
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.nh
.SH &quot;NAME&quot;
SSL_get_ex_data_X509_STORE_CTX_idx \- get ex_data index to access SSL structure
from X509_STORE_CTX
.SH &quot;SYNOPSIS&quot;
.IX Header &quot;SYNOPSIS&quot;
.Vb 1
\&amp; #include &lt;openssl/ssl.h&gt;
\&amp;
\&amp; int SSL_get_ex_data_X509_STORE_CTX_idx(void);
.Ve
.SH &quot;DESCRIPTION&quot;
.IX Header &quot;DESCRIPTION&quot;
\&amp;\fBSSL_get_ex_data_X509_STORE_CTX_idx()\fR returns the index number under which
the pointer to the \s-1SSL\s0 object is stored into the X509_STORE_CTX object.
.SH &quot;NOTES&quot;
.IX Header &quot;NOTES&quot;
Whenever a X509_STORE_CTX object is created for the verification of the
peers certificate during a handshake, a pointer to the \s-1SSL\s0 object is
stored into the X509_STORE_CTX object to identify the connection affected.
To retrieve this pointer the \fBX509_STORE_CTX_get_ex_data()\fR function can
be used with the correct index. This index is globally the same for all
X509_STORE_CTX objects and can be retrieved using
\&amp;\fBSSL_get_ex_data_X509_STORE_CTX_idx()\fR. The index value is set when
\&amp;\fBSSL_get_ex_data_X509_STORE_CTX_idx()\fR is first called either by the application
program directly or indirectly during other \s-1SSL\s0 setup functions or during
the handshake.
.PP
The value depends on other index values defined for X509_STORE_CTX objects
before the \s-1SSL\s0 index is created.
.SH &quot;RETURN VALUES&quot;
.IX Header &quot;RETURN VALUES&quot;
.IP &quot;&gt;=0&quot; 4
.IX Item &quot;&gt;=0&quot;
The index value to access the pointer.
.IP &quot;&lt;0&quot; 4
.IX Item &quot;&lt;0&quot;
An error occurred, check the error stack for a detailed error message.
.SH &quot;EXAMPLES&quot;
.IX Header &quot;EXAMPLES&quot;
The index returned from \fBSSL_get_ex_data_X509_STORE_CTX_idx()\fR allows to
access the \s-1SSL\s0 object for the connection to be accessed during the
\&amp;\fBverify_callback()\fR when checking the peers certificate. Please check
the example in \fBSSL_CTX_set_verify\fR\|(3),
.SH &quot;SEE ALSO&quot;
.IX Header &quot;SEE ALSO&quot;
\&amp;\fBssl\fR\|(3), \fBSSL_CTX_set_verify\fR\|(3),
\&amp;\fBCRYPTO_set_ex_data\fR\|(3)
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