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.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