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int gnutls_x509_crt_get_subject_alt_name(gnutls_x509_crt_t cert,
unsigned int seq, void * san, size_t * san_size, unsigned int * criti-
should contain a gnutls_x509_crt_t structure
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 (126.96.36.199), contained in
the given certificate in the X509v3 Certificate Extensions.
When the SAN type is otherName, it will extract the data in the other-
Name's value field, and GNUTLS_SAN_OTHERNAME is returned. You may use
gnutls_x509_crt_get_subject_alt_othername_oid() to get the correspond-
ing OID and the "virtual" SAN types (e.g., GNUTLS_SAN_OTHERNAME_XMPP).
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 your-
self. Currently, only the RFC 3920 id-on-xmppAddr SAN is recognized.
the alternative subject name type on success, one of the enumerated
gnutls_x509_subject_alt_name_t. It will return GNUTLS_E_SHORT_MEM-
ORY_BUFFER if san_size is not large enough to hold the value. In that
case san_size will be updated with the required size. If the certifi-
cate does not have an Alternative name with the specified sequence num-
ber then GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE is returned.
Report bugs to <firstname.lastname@example.org>.
Home page: http://www.gnutls.org
Copyright (C) 2001-2014 Free Software Foundation, Inc.