gnutls_x509_crt_get_issuer_alt_name(gnutls_x509_crt_get_issuer_alt_name(3)
NAME
gnutls_x509_crt_get_issuer_alt_name - API function
SYNOPSIS
#include <gnutls/x509.h>
gnutls_x509_crt_get_issuer_alt_name(3) cert,
unsigned int seq, void * ian, size_t * ian_size, unsigned int * criti-
cal);
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)
DESCRIPTION
This function retrieves the Issuer Alternative Name (2.5.29.18), con-
tained 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 Issuer AltName is
recognized.
RETURNS
the alternative issuer name type on success, one of the enumerated
gnutls_x509_subject_alt_name_t. It will return GNUTLS_E_SHORT_MEM-
ORY_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 certifi-
cate does not have an Alternative name with the specified sequence num-
ber then GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE is returned.
SINCE
2.10.0
REPORTING BUGS
Report bugs to <bugs@gnutls.org>.
Home page: http://www.gnutls.org
COPYRIGHT
Copyright (C) 2001-2016 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.
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
http://www.gnutls.org/manual/
gnutls gnutls_x509_crt_get_issuer_alt_name(3)
gnutls 3.4.11 - Generated Thu Apr 21 05:50:24 CDT 2016