Update files for OpenSSL-1.0.0f import.
[dragonfly.git] / secure / lib / libssl / man / SSL_get_ex_data_X509_STORE_CTX_idx.3
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124.\" ========================================================================
125.\"
126.IX Title "SSL_get_ex_data_X509_STORE_CTX_idx 3"
e3261593 127.TH SSL_get_ex_data_X509_STORE_CTX_idx 3 "2012-01-04" "1.0.0f" "OpenSSL"
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128.\" For nroff, turn off justification. Always turn off hyphenation; it makes
129.\" way too many mistakes in technical documents.
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131.nh
984263bc 132.SH "NAME"
a7d27d5a 133SSL_get_ex_data_X509_STORE_CTX_idx \- get ex_data index to access SSL structure
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134from X509_STORE_CTX
135.SH "SYNOPSIS"
e056f0e0 136.IX Header "SYNOPSIS"
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137.Vb 1
138\& #include <openssl/ssl.h>
e257b235 139\&
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140\& int SSL_get_ex_data_X509_STORE_CTX_idx(void);
141.Ve
142.SH "DESCRIPTION"
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143.IX Header "DESCRIPTION"
144\&\fISSL_get_ex_data_X509_STORE_CTX_idx()\fR returns the index number under which
145the pointer to the \s-1SSL\s0 object is stored into the X509_STORE_CTX object.
984263bc 146.SH "NOTES"
e056f0e0 147.IX Header "NOTES"
984263bc 148Whenever a X509_STORE_CTX object is created for the verification of the
e056f0e0 149peers certificate during a handshake, a pointer to the \s-1SSL\s0 object is
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150stored into the X509_STORE_CTX object to identify the connection affected.
151To retrieve this pointer the \fIX509_STORE_CTX_get_ex_data()\fR function can
152be used with the correct index. This index is globally the same for all
153X509_STORE_CTX objects and can be retrieved using
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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
156program directly or indirectly during other \s-1SSL\s0 setup functions or during
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157the handshake.
158.PP
159The value depends on other index values defined for X509_STORE_CTX objects
e056f0e0 160before the \s-1SSL\s0 index is created.
984263bc 161.SH "RETURN VALUES"
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162.IX Header "RETURN VALUES"
163.IP ">=0" 4
164.IX Item ">=0"
984263bc 165The index value to access the pointer.
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166.IP "<0" 4
167.IX Item "<0"
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168An error occurred, check the error stack for a detailed error message.
169.SH "EXAMPLES"
e056f0e0 170.IX Header "EXAMPLES"
984263bc 171The index returned from \fISSL_get_ex_data_X509_STORE_CTX_idx()\fR allows to
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172access the \s-1SSL\s0 object for the connection to be accessed during the
173\&\fIverify_callback()\fR when checking the peers certificate. Please check
174the example in \fISSL_CTX_set_verify\fR\|(3),
984263bc 175.SH "SEE ALSO"
a7d27d5a 176.IX Header "SEE ALSO"
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177\&\fIssl\fR\|(3), \fISSL_CTX_set_verify\fR\|(3),
178\&\fICRYPTO_set_ex_data\fR\|(3)