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134 .IX Title "SSL_get_ex_data_X509_STORE_CTX_idx 3"
135 .TH SSL_get_ex_data_X509_STORE_CTX_idx 3 "2010-02-27" "0.9.8m" "OpenSSL"
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141 SSL_get_ex_data_X509_STORE_CTX_idx \- get ex_data index to access SSL structure
144 .IX Header "SYNOPSIS"
146 \& #include <openssl/ssl.h>
148 \& int SSL_get_ex_data_X509_STORE_CTX_idx(void);
151 .IX Header "DESCRIPTION"
152 \&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR returns the index number under which
153 the pointer to the \s-1SSL\s0 object is stored into the X509_STORE_CTX object.
156 Whenever a X509_STORE_CTX object is created for the verification of the
157 peers certificate during a handshake, a pointer to the \s-1SSL\s0 object is
158 stored into the X509_STORE_CTX object to identify the connection affected.
159 To retrieve this pointer the \fIX509_STORE_CTX_get_ex_data()\fR function can
160 be used with the correct index. This index is globally the same for all
161 X509_STORE_CTX objects and can be retrieved using
162 \&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR. The index value is set when
163 \&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR is first called either by the application
164 program directly or indirectly during other \s-1SSL\s0 setup functions or during
167 The value depends on other index values defined for X509_STORE_CTX objects
168 before the \s-1SSL\s0 index is created.
170 .IX Header "RETURN VALUES"
173 The index value to access the pointer.
176 An error occurred, check the error stack for a detailed error message.
178 .IX Header "EXAMPLES"
179 The index returned from \fISSL_get_ex_data_X509_STORE_CTX_idx()\fR allows to
180 access the \s-1SSL\s0 object for the connection to be accessed during the
181 \&\fIverify_callback()\fR when checking the peers certificate. Please check
182 the example in \fISSL_CTX_set_verify\fR\|(3),
184 .IX Header "SEE ALSO"
185 \&\fIssl\fR\|(3), \fISSL_CTX_set_verify\fR\|(3),
186 \&\fICRYPTO_set_ex_data\fR\|(3)