Функции API (API function)
Имя (Name)
gnutls_x509_crt_get_issuer_alt_name - API function
Синопсис (Synopsis)
#include <gnutls/x509.h>
int gnutls_x509_crt_get_issuer_alt_name(gnutls_x509_crt_t cert,
unsigned int seq, void * ian, size_t * ian_size, unsigned int *
critical);
Аргументы (Arguments)
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 * ian is the place where the alternative name will be
copied to
size_t * ian_size
holds the size of ian.
unsigned int * critical
will be non-zero if the extension is marked as
critical (may be null)
Описание (Description)
This function retrieves the Issuer Alternative Name (2.5.29.18),
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 gnutls_x509_crt_get_subject_alt_othername_oid() to
get the corresponding 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 yourself. Currently, only the RFC 3920
id-on-xmppAddr Issuer AltName is recognized.
Возвращаемое значение (Return value)
the alternative issuer name type on success, one of the
enumerated gnutls_x509_subject_alt_name_t. It will return
GNUTLS_E_SHORT_MEMORY_BUFFER if ian_size is not large enough to
hold the value. In that case ian_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 is returned.
Сообщение об ошибках (Reporting bugs)
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
Смотри также (See also)
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
https://www.gnutls.org/manual/
