Tribblix: manual page: rpc_gss_get_principal

RPC_GSS_GET_PRINCIPAL_NAME(3NSL) Networking Services Library Functions

NAME

rpc_gss_get_principal_name - Get principal names at server

SYNOPSIS

#include <rpc/rpcsec_gss.h>

bool_t rpc_gss_get_principal_name(rpc_gss_principal_t *principal,
char *mech, char *name, char *node, char *domain);

DESCRIPTION

Servers need to be able to operate on a client's principal name. Such
a name is stored by the server as a rpc_gss_principal_t structure,
an opaque byte string which can be used either directly in access
control lists or as database indices which can be used to look up a
UNIX credential. A server may, for example, need to compare a
principal name it has received with the principal name of a known
entity, and to do that, it must be able to generate
rpc_gss_principal_t structures from known entities.

rpc_gss_get_principal_name() takes as input a security mechanism, a
pointer to a rpc_gss_principal_t structure, and several parameters
which uniquely identify an entity on a network: a user or service
name, a node name, and a domain name. From these parameters it
constructs a unique, mechanism-dependent principal name of the
rpc_gss_principal_t structure type.

PARAMETERS

How many of the identifying parameters (name, node, and domain) are
necessary to specify depends on the mechanism being used. For
example, Kerberos V5 requires only a user name but can accept a node
and domain name. An application can choose to set unneeded parameters
to NULL.

Information on RPCSEC_GSS data types for parameters may be found on
the rpcsec_gss(3NSL) man page.

principal
An opaque, mechanism-dependent structure representing
the client's principal name.

mech
An ASCII string representing the security mechanism in
use. Valid strings may be found in the /etc/gss/mech
file, or by using rpc_gss_get_mechanisms().

name
A UNIX login name (for example, 'gwashington') or
service name, such as 'nfs'.

node
A node in a domain; typically, this would be a machine
name (for example, 'valleyforge').

domain
A security domain; for example, a DNS or NIS domain
name ('eng.example.com').

RETURN VALUES

rpc_gss_get_principal_name() returns TRUE if it is successful;
otherwise, use rpc_gss_get_error() to get the error associated with
the failure.

FILES

/etc/gss/mech
File containing valid security mechanisms

ATTRIBUTES