SSL_GET_EX_DATA_X509_... BSD Library Functions Manual SSL_GET_EX_DATA_X509_...NAMESSL_get_ex_data_X509_STORE_CTX_idx — get ex_data index to access SSL
structure from X509_STORE_CTX
SYNOPSIS
#include <openssl/ssl.h>
int
SSL_get_ex_data_X509_STORE_CTX_idx(void);
DESCRIPTIONSSL_get_ex_data_X509_STORE_CTX_idx() returns the index number under which
the pointer to the SSL object is stored into the X509_STORE_CTX object.
NOTES
Whenever a X509_STORE_CTX object is created for the verification of the
peer's certificate during a handshake, a pointer to the SSL object is
stored into the X509_STORE_CTX object to identify the connection
affected. To retrieve this pointer the X509_STORE_CTX_get_ex_data(3)
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
SSL_get_ex_data_X509_STORE_CTX_idx(). The index value is set when
SSL_get_ex_data_X509_STORE_CTX_idx() is first called either by the appli‐
cation program directly or indirectly during other SSL setup functions or
during the handshake.
The value depends on other index values defined for X509_STORE_CTX
objects before the SSL index is created.
RETURN VALUES
≥0 The index value to access the pointer.
<0 An error occurred, check the error stack for a detailed error
message.
EXAMPLES
The index returned from SSL_get_ex_data_X509_STORE_CTX_idx() provides
access to SSL object for the connection during the verify_callback() when
checking the peer's certificate. Please check the example in
SSL_CTX_set_verify(3).
SEE ALSOCRYPTO_set_ex_data(3), ssl(3), SSL_CTX_set_verify(3)BSD April 29, 2024 BSD
