dce_aud_start_with_server_binding(3sec)
Determines whether a specified event must be audited given the server binding information and the event outcome
Used by client/server applications.
Synopsis
#include <dce/audit.h>
void dce_aud_start_with_server_binding(
unsigned32 event,
rpc_binding_handle_t
binding,
unsigned32 options,
unsigned32 outcome,
dce_aud_rec_t *ard,
unsigned32 *status);
Parameters
Input
event
Specifies the event to be audited. This is a 32-bit event number. The event field in the audit record header will be set to this number.
binding
Specifies the server's RPC binding handle from which the server identification information is retrieved to set the client, cell, and addr fields in the audit record
header. Note that when an application client issues an audit record, the server identity is represented in the client field of the record.
options
This parameter can be used to specify the optional header information desired (aud_c_evt_all_info, aud_c_evt_group_info,
aud_c_evt_address_info). It can also be used to specify any of two options: to always log an audit record (aud_c_evt_always_log) or to always send an alarm message to the standard
output (aud_c_evt_always_alarm). If any of these two options is selected, the filter is bypassed.
The value of the options parameter is the bitwise OR of any selected combination of the following option values:
| aud_c_evt_address_info | Includes the server address information in the audit record header. |
| aud_c_evt_always_log | Bypasses the filter and indicates that the event must be logged. |
| aud_c_evt_always_alarm | Bypasses the filter and indicates that an alarm message must be sent to the system console for the event. |
The event outcome to be stored in the header. The following event outcome values are defined:
| aud_c_esl_cond_success | The event was completed successfully. |
| aud_c_esl_cond_denial | The event failed because of access denial. |
| aud_c_esl_cond_failure | The event failed because of reasons other than access denial. |
| aud_c_esl_cond_pending | The event is in an intermediate state, and the outcome is pending, being one in a series of connected events, where the application desires to record the real outcome only after the last event. |
| aud_c_esl_cond_unknown | The event outcome (denial, failure, pending, or success) is still unknown. This outcome exists only between a dce_aud_start( ) (all varieties of this routine) call and the next dce_aud_commit( ) call. You can also use 0 to specify this outcome. |
ard
Returns a pointer to an audit record buffer. If the event does not need to be audited because it is not selected by the filters, or if the environment variable
DCEAUDITOFF has been set, a NULL pointer is returned. If the function is called with outcome set to aud_c_esl_cond_unknown, it is possible that the function
cannot determine whether the event should be audited. In this case, the audit record descriptor is still allocated and its address is returned to the caller. An outcome must be provided
prior to logging the record with the dce_aud_commit( ) function.
status
The status code returned by this routine. This status code indicates whether the routine was completed successfully or not. If the routine was not completed
successfully, the reason for the failure is given.
Description
The dce_aud_start_with_server_binding( ) function determines if an audit record must be generated for the specified event. The decision is based on the
event filters, an environment variable (DCEAUDITOFF), the server's identity provided in the binding parameter, and the event outcome (if it is provided in the outcome
parameter). If this event needs to be audited, the function allocates an audit record descriptor and returns a pointer to it (that is, ard). If the event does not need to be audited,
NULL is returned in the ard parameter. If the aud_c_evt_always_log or aud_c_evt_always_alarm option is selected, an audit record descriptor will always be created
and returned.
The dce_aud_start_with_server_binding( ) function is designed to be used by RPC applications. Non-RPC applications that use the DCE authorization model must use the dce_aud_start_with_pac( ) function. Non-RPC applications that do not use the DCE authorization model must use the dce_aud_start_with_name( ) function.
This function obtains the server identity information from the RPC binding handle and records it in the newly created audit record descriptor.
Event-specific information can be added to the record by calling the dce_aud_put_ev_info( ) function. The dce_aud_put_ev_info( ) function can be called multiple times after calling any of the dce_aud_start_* functions and before calling dce_aud_commit( ). A completed audit record can either be appended to an audit trail file or sent to the Audit daemon by calling dce_aud_commit( ).
This function searches for all relevant filters (for the specified subject and outcome, if these are specified), summarizes the actions for each possible event outcome, and records an outcome-action table with ard. If the outcome is specified when calling this function and the outcome does not require any action according to filters, then this function returns a NULL ard.
If the outcome is not specified in the dce_aud_start_with_server_binding( ) call, dce_aud_start_with_server_binding( ) returns a NULL ard if no action is required for all possible outcomes.
The caller should not change the outcome between the dce_aud_start_with_server_binding( ) and dce_aud_commit( ) calls arbitrarily. In this case, the outcome can be made more specific, for example, from aud_c_esl_cond_unknown to aud_c_esl_cond_success or from aud_c_esl_cond_pending to aud_c_esl_cond_success.
An outcome change from aud_c_esl_cond_success to aud_c_esl_cond_denial is not logically correct because the outcome aud_c_esl_cond_success may have caused a NULL ard to be returned in this function. If the final outcome can be aud_c_esl_cond_success, then it should be specified in this function, or use aud_c_esl_cond_unknown.
This function can be called with the outcome parameter taking a value of zero or the union (logical OR) of selected values from the set of constants aud_c_esl_cond_success, aud_c_esl_cond_failure, aud_c_esl_cond_denial, and aud_c_esl_cond_pending. The outcome parameter used in the dce_aud_commit( ) function should take one value from the same set of constants.
If dce_aud_start_with_server_binding( ) used a non-zero value for outcome, then the constant used for outcome in the dce_aud_commit( ) call should have been selected in the dce_aud_start_with_server_binding( ) call.
Return Values
No value is returned.
Errors
The following describes a partial list of errors that might be returned. Refer to the OSF DCE Problem Determination Guide for complete descriptions of all error messages.
aud_s_ok
The call was successful.
Status codes passed from rpc_binding_inq_auth_info( ).
Status codes passed from rpc_binding_to_string_binding( ).
Status codes passed from dce_aud_start_with_name( ).
Related Information
Functions: