| ## rpc_binding_inq_auth_client(3rpc) Returns authentication and authorization information from the binding handle for an authenticated client Note: 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 principal name. | (unsigned_char_t *)
rpc_c_authz_dce | The calling client's privilege attribute certificate. | (sec_id_pac_t *)
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 | The routine did not complete because of an invalid binding handle.
rpc_s_wrong_kind_of_binding | The routine did not complete because of the wrong kind of binding for operation.
rpc_s_binding_has_no_auth | The routine completed successfully, but the 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. 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(3rpc) rpc_binding_set_auth_info(3rpc) rpc_string_free(3rpc) ##