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131 .IX Title "SSL_get_ex_data_X509_STORE_CTX_idx 3"
132 .TH SSL_get_ex_data_X509_STORE_CTX_idx 3 "2009-06-14" "0.9.8k" "OpenSSL"
134 SSL_get_ex_data_X509_STORE_CTX_idx \- get ex_data index to access SSL structure
137 .IX Header "SYNOPSIS"
139 \& #include <openssl/ssl.h>
143 \& int SSL_get_ex_data_X509_STORE_CTX_idx(void);
146 .IX Header "DESCRIPTION"
147 \&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR returns the index number under which
148 the pointer to the \s-1SSL\s0 object is stored into the X509_STORE_CTX object.
151 Whenever a X509_STORE_CTX object is created for the verification of the
152 peers certificate during a handshake, a pointer to the \s-1SSL\s0 object is
153 stored into the X509_STORE_CTX object to identify the connection affected.
154 To retrieve this pointer the \fIX509_STORE_CTX_get_ex_data()\fR function can
155 be used with the correct index. This index is globally the same for all
156 X509_STORE_CTX objects and can be retrieved using
157 \&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR. The index value is set when
158 \&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR is first called either by the application
159 program directly or indirectly during other \s-1SSL\s0 setup functions or during
162 The value depends on other index values defined for X509_STORE_CTX objects
163 before the \s-1SSL\s0 index is created.
165 .IX Header "RETURN VALUES"
168 The index value to access the pointer.
171 An error occurred, check the error stack for a detailed error message.
173 .IX Header "EXAMPLES"
174 The index returned from \fISSL_get_ex_data_X509_STORE_CTX_idx()\fR allows to
175 access the \s-1SSL\s0 object for the connection to be accessed during the
176 \&\fIverify_callback()\fR when checking the peers certificate. Please check
177 the example in \fISSL_CTX_set_verify\fR\|(3),
179 .IX Header "SEE ALSO"
180 \&\fIssl\fR\|(3), \fISSL_CTX_set_verify\fR\|(3),
181 \&\fICRYPTO_set_ex_data\fR\|(3)