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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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gnutls_x509_...eck_hostname2(3) gnutls gnutls_x509_...eck_hostname2(3)
gnutls_x509_crt_check_hostname2 - API function
#include <gnutls/x509.h>
unsigned gnutls_x509_crt_check_hostname2(gnutls_x509_crt_t cert,
const char * hostname, unsigned int flags);
gnutls_x509_crt_t cert
should contain an gnutls_x509_crt_t type
const char * hostname
A null terminated string that contains a DNS name
unsigned int flags
gnutls_certificate_verify_flags
This function will check if the given certificate's subject
matches the given hostname. This is a basic implementation of
the matching described in RFC6125, and takes into account
wildcards, and the DNSName/IPAddress subject alternative name
PKIX extension.
IPv4 addresses are accepted by this function in the
dotted-decimal format (e.g, ddd.ddd.ddd.ddd), and IPv6 addresses
in the hexadecimal x:x:x:x:x:x:x:x format. For them the IPAddress
subject alternative name extension is consulted. Previous
versions to 3.6.0 of GnuTLS in case of a non-match would consult
(in a non-standard extension) the DNSname and CN fields. This is
no longer the case.
When the flag GNUTLS_VERIFY_DO_NOT_ALLOW_WILDCARDS is specified
no wildcards are considered. Otherwise they are only considered
if the domain name consists of three components or more, and the
wildcard starts at the leftmost position. When the flag
GNUTLS_VERIFY_DO_NOT_ALLOW_IP_MATCHES is specified, the input
will be treated as a DNS name, and matching of textual IP
addresses against the IPAddress part of the alternative name will
not be allowed.
The function gnutls_x509_crt_check_ip() is available for matching
IP addresses.
non-zero for a successful match, and zero on failure.
3.3.0
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
Copyright © 2001-2023 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
https://www.gnutls.org/manual/
This page is part of the GnuTLS (GnuTLS Transport Layer Security
Library) project. Information about the project can be found at
⟨http://www.gnutls.org/⟩. If you have a bug report for this
manual page, send it to bugs@gnutls.org. This page was obtained
from the tarball gnutls-3.8.2.tar.xz fetched from
⟨http://www.gnutls.org/download.html⟩ on 2023-12-22. If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
gnutls 3.8.2 gnutls_x509_...eck_hostname2(3)
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HTML rendering created 2023-12-22 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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