.\" Copyright (c) 1997 Kungliga Tekniska Högskolan
.\" $Id: krb5_sname_to_principal.3,v 1.2 2001/01/26 22:43:22 assar Exp $
.Dd August 8, 1997
.Dt KRB5_PRINCIPAL 3
.Os HEIMDAL
.Sh NAME
.Nm krb5_sname_to_principal ,
.Nm krb5_sock_to_principal
.Nd create a service principal
.Sh SYNOPSIS
.Fd #include <krb5.h>
.Ft krb5_error_code
.Fn krb5_sname_to_principal "krb5_context context" "const char *hostname" "const char *sname" "int32_t type" "krb5_principal *principal"
.Ft krb5_error_code
.Fn krb5_sock_to_principal "krb5_context context" "int socket" "const char *sname" "int32_t type" "krb5_principal *principal"
.Sh DESCRIPTION
These functions create a 
.Dq service
principal that can, for instance, be used to lookup a key in a keytab. For both these function the
.Fa sname 
parameter will be used for the first component of the created principal. If 
.Fa sname
is
.Dv NULL ,
.Dq host
will be used instead.
.Fn krb5_sname_to_principal 
will use the passed 
.Fa hostname
for the second component. If type 
.Dv KRB5_NT_SRV_HST
this name will be looked up with
.Fn gethostbyname .
If 
.Fa hostname is
.Dv NULL ,
the local hostname will be used.
.Pp
.Fn krb5_sock_to_principal 
will use the 
.Dq sockname
of the passed
.Fa socket ,
which should be a bound
.Dv AF_INET
socket.
.Sh SEE ALSO
.Xr krb5_425_conv_principal 3 ,
.Xr krb5_build_principal 3 ,
.Xr krb5_free_principal 3 ,
.Xr krb5_parse_name 3 ,
.Xr krb5_unparse_name 3