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SSL_get_ex_data_X509_STORE_CTX_idx(3)	     OpenSSL	    SSL_get_ex_data_X509_STORE_CTX_idx(3)

       SSL_get_ex_data_X509_STORE_CTX_idx - get ex_data index to access SSL structure from

       libcrypto, -lcrypto

	#include <openssl/ssl.h>

	int SSL_get_ex_data_X509_STORE_CTX_idx(void);

       SSL_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.

       Whenever a X509_STORE_CTX object is created for the verification of the peers 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() 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 application 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.

       >=0 The index value to access the pointer.

       <0  An error occurred, check the error stack for a detailed error message.

       The index returned from SSL_get_ex_data_X509_STORE_CTX_idx() allows to access the SSL
       object for the connection to be accessed during the verify_callback() when checking the
       peers certificate. Please check the example in SSL_CTX_set_verify(3),

       ssl(3), SSL_CTX_set_verify(3), CRYPTO_set_ex_data(3)

1.0.1i					    2009-07-20	    SSL_get_ex_data_X509_STORE_CTX_idx(3)
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