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.\" DO NOT MODIFY THIS FILE! It was generated by gdoc.
.TH "gnutls_x509_crt_get_extension_info" 3 "2.12.6.1" "gnutls" "gnutls"
.SH NAME
gnutls_x509_crt_get_extension_info \- API function
.SH SYNOPSIS
.B #include <gnutls/x509.h>
.sp
.BI "int gnutls_x509_crt_get_extension_info(gnutls_x509_crt_t " cert ", int " indx ", void * " oid ", size_t * " sizeof_oid ", int * " critical ");"
.SH ARGUMENTS
.IP "gnutls_x509_crt_t cert" 12
should contain a \fBgnutls_x509_crt_t\fP structure
.IP "int indx" 12
Specifies which extension OID to send. Use zero to get the first one.
.IP "void * oid" 12
a pointer to a structure to hold the OID
.IP "size_t * sizeof_oid" 12
initially holds the maximum size of \fIoid\fP, on return
holds actual size of \fIoid\fP.
.IP "int * critical" 12
output variable with critical flag, may be NULL.
.SH "DESCRIPTION"
This function will return the requested extension OID in the
certificate, and the critical flag for it. The extension OID will
be stored as a string in the provided buffer. Use
\fBgnutls_x509_crt_get_extension_data()\fP to extract the data.
If the buffer provided is not long enough to hold the output, then
*\fIsizeof_oid\fP is updated and \fBGNUTLS_E_SHORT_MEMORY_BUFFER\fP will be
returned.
.SH "RETURNS"
On success, \fBGNUTLS_E_SUCCESS\fP (zero) is returned,
otherwise an error code is returned. If you have reached the
last extension available \fBGNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE\fP
will be returned.
.SH "REPORTING BUGS"
Report bugs to <bug-gnutls@gnu.org>.
GnuTLS home page: http://www.gnu.org/software/gnutls/
General help using GNU software: http://www.gnu.org/gethelp/
.SH COPYRIGHT
Copyright \(co 2008 Free Software Foundation.
.br
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
.SH "SEE ALSO"
The full documentation for
.B gnutls
is maintained as a Texinfo manual. If the
.B info
and
.B gnutls
programs are properly installed at your site, the command
.IP
.B info gnutls
.PP
should give you access to the complete manual.
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