NAME

rpc_binding_inq_auth_info — Returns authentication and authorization information from a server binding handle;  used by client applications

Synopsis

void rpc_binding_inq_auth_info(
rpc_binding_handle_t binding,
unsigned_char_t ∗∗server_princ_name,
unsigned32 ∗protect_level,
unsigned32 ∗authn_svc,
rpc_auth_identity_handle_t ∗auth_identity,
unsigned32 ∗authz_svc,
unsigned32 ∗status);

Parameters

Input

bindingSpecifies the server binding handle from which to return the authentication and authorization information. 

Output

server_princ_name
Returns a pointer to the expected principal name of the server referenced by binding.  The content of the returned name and its syntax are 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 used for remote procedure calls made with binding.  The protection level determines the degree to which authenticated communications between the client and the server are protected. 

Note that the returned level may be different from the level specified for protect_level on the call to rpc_binding_set_auth_info().  If the RPC runtime or the RPC protocol in the bound protocol sequence does not support a specified level, the level is automatically upgraded to the next higher supported level. 

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 parameter value.

authn_svcReturns the authentication service used for remote procedure calls made with binding. 

Specifying NULL prevents the routine from returning this argument. 

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.

auth_identity
Returns a handle for the data structure that contains the client’s authentication and authorization credentials.  This parameter must be cast as appropriate for the authentication and authorization services established via rpc_binding_set_auth_info(). 

When using the rpc_c_authn_dce_secret authentication service and any authorization service, this value must be a sec_login_handle_t obtained from one of the following routines:

   •sec_login_setup_identity()

   •sec_login_get_current_context()

   •sec_login_newgroups()

See the sec_login_setup_identity(3sec), sec_login_get_current_context(3sec), and sec_login_newgroups(3sec) reference pages for more information. 

Specifying NULL prevents the routine from returning this parameter. 

authz_svcReturns the authorization service used for remote procedure calls made with 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). 

statusReturns 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
The routine completed successfully.

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 was specified for the operation.

rpc_s_binding_has_no_auth
The routine completed successfully, but the binding has no authentication information.

Description

The rpc_binding_inq_auth_info() routine returns authentication and authorization information associated with the specified server binding handle.  The calling client associates the authentication and authorization data with the server binding handle by a prior call to the rpc_binding_set_auth_info() routine. 

The RPC runtime allocates memory for the returned server_princ_name parameter.  The caller is responsible for calling the rpc_string_free() routine for the returned parameter string. 

Return Values

No value is returned. 

Related Information

Functions: rpc_binding_set_auth_info(3rpc), rpc_string_free(3rpc).