should contain a gnutls_x509_crt_t type
Specifies which extension OID to send. Use (0) to get
the first one.
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
certificate, and the critical flag for it. The extension OID
will be stored as a string in the provided buffer. Use
gnutls_x509_crt_get_extension() to extract the data.
If the buffer provided is not long enough to hold the output,
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 (the latter is
not true for GnuTLS prior to 3.6.0).
This page is part of the GnuTLS (GnuTLS Transport Layer Security
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⟨http://www.gnutls.org/⟩. If you have a bug report for this
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