DCE_RPC, Application Routines, rpc_binding_inq_auth_client
*Conan The Librarian (sorry for the slow response - running on an old VAX)
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VMS Help DCE_RPC, Application Routines, rpc_binding_inq_auth_client *Conan The Librarian (sorry for the slow response - running on an old VAX) |
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NAME
rpc_binding_inq_auth_client - Returns authentication and authorization
information from the binding handle for
an authenticated client. This call is
provided only for compatibility with
pre-1.1 DCE applications. DCE Release
1.1 and later applications should use
the rpc_binding_inq_auth_caller() call.
Used by server applications.
SYNOPSIS
#include <dce/rpc.h>
#include <dce/id_base.h>
void rpc_binding_inq_auth_client( rpc_binding_handle_t binding,
rpc_authz_handle_t *privs,
unsigned_char_t **server_princ_name,
unsigned32 *protect_level,
unsigned32 *authn_svc,
unsigned32 *authz_svc,
unsigned32 *status );
PARAMETERS
Input
binding
Specifies the client binding handle from which to return the
authentication and authorization information.
Output
privs
Returns a handle to the authorization information for the client
that made the remote procedure call on binding.
The server must cast this handle to the data type specified by
authz_svc. The following table shows how to cast the return value.
Casts for Authorization Information
______________________________________________________________________
For authz_svc value: privs contains this data: Use this cast:
______________________________________________________________________
rpc_c_authz_none A NULL value. None
rpc_c_authz_name The calling client's (unsigned_char_t *)
principal name.
rpc_c_authz_dce The calling client's (sec_id_pac_t *)
privilege attribute
certificate.
Note that rpc_c_authz_none is valid only if the authn_svc
parameter is rpc_c_authn_none.
The data referenced by this parameter is read-only and should not
be modified by the server. If the server wants to preserve any
of the returned data, it must copy the data into server-allocated
memory. Specifying NULL prevents the routine from returning this
parameter.
server_princ_name
Returns a pointer to the server principal name specified by the
client that made the remote procedure call on binding. The
content of the returned name and its syntax is defined by the
authentication service in use.
Specifying NULL prevents the routine from returning this parameter.
In this case, the caller does not have to call the rpc_string_free()
routine.
protect_level
Returns the protection level requested by the client that made the
remote procedure call on binding. The protection level determines
the degree to which authenticated communications between the client
and the server are protected.
Specifying NULL prevents the routine from returning this parameter.
The possible protection levels are as follows:
rpc_c_protect_level_default
Uses the default protection level for the specified
authentication service.
rpc_c_protect_level_none
Performs no protection.
rpc_c_protect_level_connect
Performs protection only when the client establishes
a relationship with the server.
rpc_c_protect_level_call
Performs protection only at the beginning of each
remote procedure call when the server receives the
request.
rpc_c_protect_level_pkt
Ensures that all data received is from the expected
client.
rpc_c_protect_level_pkt_integ
Ensures and verifies that none of the data
transferred between client and server has been
modified.
rpc_c_protect_level_pkt_privacy
Performs protection as specified by all of the
previous levels and also encrypt each remote
procedure call argument value.
authn_svc
Returns the authentication service requested by the client that
made the remote procedure call on binding.
Specifying NULL prevents the routine from returning this parameter.
The possible authentication services are as follows:
rpc_c_authn_none
No authentication.
rpc_c_authn_dce_secret
DCE shared-secret key authentication.
rpc_c_authn_dce_public
DCE public key authentication (reserved for future
use).
rpc_c_authn_default
DCE default authentication service.
authz_svc
Returns the authorization service requested by the client that
made the remote procedure call on binding.
Specifying NULL prevents the routine from returning this
parameter. The possible authorization services are as follows:
rpc_c_authz_none
Server performs no authorization. This is valid only
if the authn_svc parameter is rpc_c_authn_none.
rpc_c_authz_name
Server performs authorization based on the client
principal name.
rpc_c_authz_dce
Server performs authorization using the client's DCE
Privilege Attribute Certificate (PAC) sent to the server
with each remote procedure call made with binding.
Generally, access is checked against DCE Access Control
Lists (ACLs).
status
Returns the status code from this routine. This status code
indicates whether the routine completed successfully or, if not,
why not. The possible status codes and their meanings are as
follows:
rpc_s_ok Success.
rpc_s_invalid_binding
Invalid binding handle.
rpc_s_wrong_kind_of_binding
Wrong kind of binding for operation.
rpc_s_binding_has_no_auth
Binding has no authentication information.
DESCRIPTION
The rpc_binding_inq_auth_client() routine returns authentication and
authorization information associated with the client identified by
binding. The calling server manager routine can use the returned data
for authorization purposes. This call is provided only for
compatibility with pre-1.1 DCE applications. DCE Release 1.1 and
later applications should use the rpc_binding_inq_auth_caller() call.
The RPC runtime allocates memory for the returned server_princ_name
parameter. The server is responsible for calling the rpc_string_free()
routine for the returned parameter string.
For applications in which the client side uses the IDL auto_handle
or implicit_handle attribute, the server side needs to be built with
the IDL explicit_handle attribute specified in the Attribute
Configuration File (ACF). Using explicit_handle provides binding as
the first parameter to each server manager routine.
RETURN VALUES
No value is returned.
RELATED INFORMATION
Functions: rpc_binding_inq_auth_info
rpc_binding_set_auth_info
rpc_string_free
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