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int gnutls_x509_crt_get_extension_info(gnutls_x509_crt_t cert, int
indx, void * oid, size_t * oid_size, unsigned int * critical);
should contain a gnutls_x509_crt_t structure
int indx Specifies which extension OID to send. Use (0) to get the
void * oid a pointer to a structure to hold the OID
size_t * oid_size
initially holds the maximum size of oid , on return holds
actual size of oid .
unsigned int * critical
output variable with critical flag, may be NULL.
This function will return the requested extension OID in the certifi-
cate, and the critical flag for it. The extension OID will be stored
as a string in the provided buffer. Use gnutls_x509_crt_get_exten-
sion_data() to extract the data.
If the buffer provided is not long enough to hold the output, then
oid_size is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.
The oid returned will be null terminated, although
oid_size will not account for the trailing null.
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative
error code is returned. If you have reached the last extension avail-
able GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be returned.
Report bugs to <email@example.com>.
Home page: http://www.gnutls.org
Copyright (C) 2001-2014 Free Software Foundation, Inc.
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.
The full documentation for gnutls is maintained as a Texinfo manual.
If the /usr/share/doc/gnutls/ directory does not contain the HTML form