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SSL_SESSION_get_ex_new_index, SSL_SESSION_set_ex_data, SSL_SESSION_get_ex_datainternal application specific data functions

#include <openssl/ssl.h>

SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);

SSL_SESSION_set_ex_data(SSL_SESSION *session, int idx, void *arg);

void *
SSL_SESSION_get_ex_data(const SSL_SESSION *session, 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);

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.

() is used to register a new index for application-specific data.

() is used to store application data at arg for idx into the session object.

() is used to retrieve the information for idx from session.

A detailed description for the () functionality can be found in RSA_get_ex_new_index(3). The () and () functionality is described in CRYPTO_set_ex_data(3).

The application data is only maintained for sessions held in memory. The application data is not included when dumping the session with i2d_SSL_SESSION(3) (and all functions indirectly calling the dump functions like PEM_write_SSL_SESSION(3) and PEM_write_bio_SSL_SESSION(3)) and can therefore not be restored.

CRYPTO_set_ex_data(3), RSA_get_ex_new_index(3), ssl(3)

SSL_SESSION_get_ex_new_index(), SSL_SESSION_set_ex_data(), and SSL_SESSION_get_ex_data() first appeared in SSLeay 0.9.0 and have been available since OpenBSD 2.4.

March 21, 2018 OpenBSD-7.3