=pod
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=head1 NAME
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SSL_CTX_get_ex_new_index, SSL_CTX_set_ex_data, SSL_CTX_get_ex_data - internal application specific data functions
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=head1 SYNOPSIS
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#include <openssl/ssl.h>
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int SSL_CTX_get_ex_new_index(long argl, void *argp,
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CRYPTO_EX_new *new_func,
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CRYPTO_EX_dup *dup_func,
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CRYPTO_EX_free *free_func);
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int SSL_CTX_set_ex_data(SSL_CTX *ctx, int idx, void *arg);
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void *SSL_CTX_get_ex_data(const SSL_CTX *ctx, int idx);
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typedef int new_func(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
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int idx, long argl, void *argp);
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typedef void free_func(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
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int idx, long argl, void *argp);
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typedef int dup_func(CRYPTO_EX_DATA *to, CRYPTO_EX_DATA *from, void *from_d,
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int idx, long argl, void *argp);
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=head1 DESCRIPTION
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Several OpenSSL structures can have application specific data attached to them.
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These functions are used internally by OpenSSL to manipulate application
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specific data attached to a specific structure.
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SSL_CTX_get_ex_new_index() is used to register a new index for application
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specific data.
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SSL_CTX_set_ex_data() is used to store application data at B<arg> for B<idx>
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into the B<ctx> object.
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SSL_CTX_get_ex_data() is used to retrieve the information for B<idx> from
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B<ctx>.
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A detailed description for the B<*_get_ex_new_index()> functionality
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can be found in L<RSA_get_ex_new_index(3)|RSA_get_ex_new_index(3)>.
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The B<*_get_ex_data()> and B<*_set_ex_data()> functionality is described in
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L<CRYPTO_set_ex_data(3)|CRYPTO_set_ex_data(3)>.
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=head1 SEE ALSO
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L<ssl(3)|ssl(3)>,
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L<RSA_get_ex_new_index(3)|RSA_get_ex_new_index(3)>,
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L<CRYPTO_set_ex_data(3)|CRYPTO_set_ex_data(3)>
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=cut
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