1SSL_get_ex_data_X509_STORE_CTX_idx(3)OpenSSSLSL_get_ex_data_X509_STORE_CTX_idx(3)
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NAME

6       SSL_get_ex_data_X509_STORE_CTX_idx - get ex_data index to access SSL
7       structure from X509_STORE_CTX
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SYNOPSIS

10        #include <openssl/ssl.h>
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12        int SSL_get_ex_data_X509_STORE_CTX_idx(void);
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DESCRIPTION

15       SSL_get_ex_data_X509_STORE_CTX_idx() returns the index number under
16       which the pointer to the SSL object is stored into the X509_STORE_CTX
17       object.
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NOTES

20       Whenever a X509_STORE_CTX object is created for the verification of the
21       peers certificate during a handshake, a pointer to the SSL object is
22       stored into the X509_STORE_CTX object to identify the connection
23       affected.  To retrieve this pointer the X509_STORE_CTX_get_ex_data()
24       function can be used with the correct index. This index is globally the
25       same for all X509_STORE_CTX objects and can be retrieved using
26       SSL_get_ex_data_X509_STORE_CTX_idx(). The index value is set when
27       SSL_get_ex_data_X509_STORE_CTX_idx() is first called either by the
28       application program directly or indirectly during other SSL setup
29       functions or during the handshake.
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31       The value depends on other index values defined for X509_STORE_CTX
32       objects before the SSL index is created.
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RETURN VALUES

35       >=0 The index value to access the pointer.
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37       <0  An error occurred, check the error stack for a detailed error
38           message.
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EXAMPLES

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

47       ssl(3), SSL_CTX_set_verify(3), CRYPTO_set_ex_data(3)
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511.0.0e                            2001-01-S2S0L_get_ex_data_X509_STORE_CTX_idx(3)
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