DOKK / manpages / debian 11 / gnutls-doc / gnutls_x509_crt_get_subject_alt_name2.3.en
gnutls_x509_crt_get_subject_alt_name2(3) gnutls gnutls_x509_crt_get_subject_alt_name2(3)

gnutls_x509_crt_get_subject_alt_name2 - API function

#include <gnutls/x509.h>

int gnutls_x509_crt_get_subject_alt_name2(gnutls_x509_crt_t cert, unsigned int seq, void * san, size_t * san_size, unsigned int * san_type, unsigned int * critical);

should contain a gnutls_x509_crt_t type
specifies the sequence number of the alt name (0 for the first one, 1 for the second etc.)
is the place where the alternative name will be copied to
holds the size of ret.
holds the type of the alternative name (one of gnutls_x509_subject_alt_name_t).
will be non-zero if the extension is marked as critical (may be null)

This function will return the alternative names, contained in the given certificate. It is the same as gnutls_x509_crt_get_subject_alt_name() except for the fact that it will return the type of the alternative name in san_type even if the function fails for some reason (i.e. the buffer provided is not enough).

the alternative subject name type on success, one of the enumerated gnutls_x509_subject_alt_name_t. It will return GNUTLS_E_SHORT_MEMORY_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 certificate does not have an Alternative name with the specified sequence number then GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE is returned.

Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org

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3.7.1 gnutls