Provided by: gnutls-doc_3.4.10-4ubuntu1.9_all bug

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 type

       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 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, 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.

       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 © 2001-2021 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                                               3.4.10                   gnutls_x509_crt_check_hostname2(3)