gnutls_x509_crt_check_hostname2 man page on DragonFly
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gnutls_x509_crt_check_hostname2(3) gnutls gnutls_x509_crt_check_hostname2(3)
NAME
gnutls_x509_crt_check_hostname2 - API function
SYNOPSIS
#include <gnutls/x509.h>
int gnutls_x509_crt_check_hostname2(gnutls_x509_crt_t cert, const char
* hostname, unsigned int flags);
ARGUMENTS
gnutls_x509_crt_t cert
should contain an gnutls_x509_crt_t structure
const char * hostname
A null terminated string that contains a DNS name
unsigned int flags
gnutls_certificate_verify_flags
DESCRIPTION
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 for‐
mat (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, as well as the DNSNames in case of a non-match.
The latter fallback exists due to misconfiguration of many servers
which place an IPAddress inside the DNSName extension.
The comparison of dns names may have false-negatives as it is done byte
by byte in non-ascii names.
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.
RETURNS
non-zero for a successful match, and zero on failure.
REPORTING BUGS
Report bugs to <bugs@gnutls.org>.
Home page: http://www.gnutls.org
COPYRIGHT
Copyright © 2001-2014 Free Software Foundation, Inc..
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 3.3.17 gnutls_x509_crt_check_hostname2(3)
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