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+.\" Copyright (c) 2004, 2006 Kungliga Tekniska Högskolan
+.\" (Royal Institute of Technology, Stockholm, Sweden).
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\"
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\"
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" 3. Neither the name of the Institute nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" $Id: krb5_check_transited.3 17382 2006-05-01 07:09:16Z lha $
+.\"
+.Dd May  1, 2006
+.Dt KRB5_CHECK_TRANSITED 3
+.Os HEIMDAL
+.Sh NAME
+.Nm krb5_check_transited ,
+.Nm krb5_check_transited_realms ,
+.Nm krb5_domain_x500_decode ,
+.Nm krb5_domain_x500_encode
+.Nd realm transit verification and encoding/decoding functions
+.Sh LIBRARY
+Kerberos 5 Library (libkrb5, -lkrb5)
+.Sh SYNOPSIS
+.In krb5.h
+.Ft krb5_error_code
+.Fo krb5_check_transited
+.Fa "krb5_context context"
+.Fa "krb5_const_realm client_realm"
+.Fa "krb5_const_realm server_realm"
+.Fa "krb5_realm *realms"
+.Fa "int num_realms"
+.Fa "int *bad_realm"
+.Fc
+.Ft krb5_error_code
+.Fo krb5_check_transited_realms
+.Fa "krb5_context context"
+.Fa "const char *const *realms"
+.Fa "int num_realms"
+.Fa "int *bad_realm"
+.Fc
+.Ft krb5_error_code
+.Fo krb5_domain_x500_decode
+.Fa "krb5_context context"
+.Fa "krb5_data tr"
+.Fa "char ***realms"
+.Fa "int *num_realms"
+.Fa "const char *client_realm"
+.Fa "const char *server_realm"
+.Fc
+.Ft krb5_error_code
+.Fo krb5_domain_x500_encode
+.Fa "char **realms"
+.Fa "int num_realms"
+.Fa "krb5_data *encoding"
+.Fc
+.Sh DESCRIPTION
+.Fn krb5_check_transited
+checks the path from
+.Fa client_realm
+to
+.Fa server_realm
+where
+.Fa realms
+and
+.Fa num_realms
+is the realms between them.
+If the function returns an error value, 
+.Fa bad_realm
+will be set to the realm in the list causing the error.
+.Fn krb5_check_transited
+is used internally by the KDC and libkrb5 and should not be called by
+client applications.
+.Pp
+.Fn krb5_check_transited_realms
+is deprecated.
+.Pp
+.Fn krb5_domain_x500_encode
+and
+.Fn krb5_domain_x500_decode
+encodes and decodes the realm names in the X500 format that Kerberos
+uses to describe the transited realms in krbtgts.
+.Sh SEE ALSO
+.Xr krb5 3 ,
+.Xr krb5.conf 5