gnutls_x509_crt_get_subject_alt_name - API function
cert, unsigned int seq, void * san,
size_t * san_size, unsigned int * critical);
- gnutls_x509_crt_t cert
- should contain a gnutls_x509_crt_t type
- unsigned int seq
- specifies the sequence number of the alt name (0 for the first one, 1 for
the second etc.)
- void * san
- is the place where the alternative name will be copied to
- size_t * san_size
- holds the size of san.
- unsigned int * critical
- will be non-zero if the extension is marked as critical (may be null)
This function retrieves the Alternative Name (184.108.40.206), contained in the given
certificate in the X509v3 Certificate Extensions.
When the SAN type is otherName, it will extract the data in the otherName's
value field, and GNUTLS_SAN_OTHERNAME
is returned. You may use
to get the
corresponding OID and the "virtual" SAN types (e.g.,
If an otherName OID is known, the data will be decoded. Otherwise the returned
data will be DER encoded, and you will have to decode it yourself. Currently,
only the RFC 3920 id-on-xmppAddr SAN is recognized.
the alternative subject name type on success, one of the enumerated
. It will return
is not large enough to
hold the value. In that case san_size
will be updated with the required
size. If the certificate does not have an Alternative name with the specified
sequence number then GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE
Report bugs to <firstname.lastname@example.org>.
Home page: https://www.gnutls.org
Copyright © 2001-2019 Free Software Foundation, Inc., and others.
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 visit