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.IX Title "SSL_CTX_get_ex_new_index 3"
.TH SSL_CTX_get_ex_new_index 3 2019-12-20 1.0.2u OpenSSL
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.nh
.SH NAME
SSL_CTX_get_ex_new_index, SSL_CTX_set_ex_data, SSL_CTX_get_ex_data \- internal application specific data functions
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& int SSL_CTX_get_ex_new_index(long argl, void *argp,
\&                CRYPTO_EX_new *new_func,
\&                CRYPTO_EX_dup *dup_func,
\&                CRYPTO_EX_free *free_func);
\&
\& int SSL_CTX_set_ex_data(SSL_CTX *ctx, int idx, void *arg);
\&
\& void *SSL_CTX_get_ex_data(const SSL_CTX *ctx, int idx);
\&
\& typedef int new_func(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
\&                int idx, long argl, void *argp);
\& typedef void free_func(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
\&                int idx, long argl, void *argp);
\& typedef int dup_func(CRYPTO_EX_DATA *to, CRYPTO_EX_DATA *from, void *from_d,
\&                int idx, long argl, void *argp);
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
Several OpenSSL structures can have application specific data attached to them.
These functions are used internally by OpenSSL to manipulate application
specific data attached to a specific structure.
.PP
\&\fBSSL_CTX_get_ex_new_index()\fR is used to register a new index for application
specific data.
.PP
\&\fBSSL_CTX_set_ex_data()\fR is used to store application data at \fBarg\fR for \fBidx\fR
into the \fBctx\fR object.
.PP
\&\fBSSL_CTX_get_ex_data()\fR is used to retrieve the information for \fBidx\fR from
\&\fBctx\fR.
.PP
A detailed description for the \fB*_get_ex_new_index()\fR functionality
can be found in \fBRSA_get_ex_new_index\fR\|(3).
The \fB*_get_ex_data()\fR and \fB*_set_ex_data()\fR functionality is described in
\&\fBCRYPTO_set_ex_data\fR\|(3).
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBssl\fR\|(3),
\&\fBRSA_get_ex_new_index\fR\|(3),
\&\fBCRYPTO_set_ex_data\fR\|(3)