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126 .IX Title "SSL_get_ex_data_X509_STORE_CTX_idx 3"
127 .TH SSL_get_ex_data_X509_STORE_CTX_idx 3 "2007-10-24" "0.9.8g" "OpenSSL"
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133 SSL_get_ex_data_X509_STORE_CTX_idx \- get ex_data index to access SSL structure
136 .IX Header "SYNOPSIS"
138 \& #include <openssl/ssl.h>
140 \& int SSL_get_ex_data_X509_STORE_CTX_idx(void);
143 .IX Header "DESCRIPTION"
144 \&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR returns the index number under which
145 the pointer to the \s-1SSL\s0 object is stored into the X509_STORE_CTX object.
148 Whenever a X509_STORE_CTX object is created for the verification of the
149 peers certificate during a handshake, a pointer to the \s-1SSL\s0 object is
150 stored into the X509_STORE_CTX object to identify the connection affected.
151 To retrieve this pointer the \fIX509_STORE_CTX_get_ex_data()\fR function can
152 be used with the correct index. This index is globally the same for all
153 X509_STORE_CTX objects and can be retrieved using
154 \&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR. The index value is set when
155 \&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR is first called either by the application
156 program directly or indirectly during other \s-1SSL\s0 setup functions or during
159 The value depends on other index values defined for X509_STORE_CTX objects
160 before the \s-1SSL\s0 index is created.
162 .IX Header "RETURN VALUES"
165 The index value to access the pointer.
168 An error occurred, check the error stack for a detailed error message.
170 .IX Header "EXAMPLES"
171 The index returned from \fISSL_get_ex_data_X509_STORE_CTX_idx()\fR allows to
172 access the \s-1SSL\s0 object for the connection to be accessed during the
173 \&\fIverify_callback()\fR when checking the peers certificate. Please check
174 the example in \fISSL_CTX_set_verify\fR\|(3),
176 .IX Header "SEE ALSO"
177 \&\fIssl\fR\|(3), \fISSL_CTX_set_verify\fR\|(3),
178 \&\fICRYPTO_set_ex_data\fR\|(3)