v3mt_nfy.c

wm PNE 3.3 source code, running at more than vxworks6.x version.

NAME: notifytable_create_cleanup

PURPOSE: Cleanup after a notify create test succeeded but some
         other test failed.  As this is a create the state pointer
         points to a structure that is installed, we need to deinstall
         it, call the backout routine, and cleanup the state.

	 Expects the pointer to point to a VB_T

PARAMETERS: 
	ptr_t   A pointer to the vb that points to the notify
		that we were going to create, cast as a ptr_t

RETURNS: Nothing
****************************************************************************/

static void
  notifytable_create_cleanup(ptr_t notifyptr)
{
SNMP_NOTIFY_T *notify;

notify = (SNMP_NOTIFY_T *)(((VB_T *)notifyptr)->vb_priv);
SNMP_V3_NOTIFY_CREATE_BACKOUT(0, notify);
SNMP_Notify_Deinstall(notify);
SNMP_Notify_Destroy(notify);
}

/****************************************************************************
NAME: notifytable_update_cleanup

PURPOSE: Cleanup after a notify update test succeeded but some
         other test failed.  As this is an update the state pointer
         points to a structure that isn't installed.  The next pointer
         of that structure points to the installed copy.  We call the
         backout routine and cleanup the state.

PARAMETERS: 
	ptr_t   A pointer to the vb that points to the notify
	        that contained the update information,
		cast as a ptr_t

RETURNS: Nothing
****************************************************************************/

static void
  notifytable_update_cleanup(ptr_t notifyptr)
{
SNMP_NOTIFY_T *notify;

notify = (SNMP_NOTIFY_T *)(((VB_T *)notifyptr)->vb_priv);
SNMP_V3_NOTIFY_UPDATE_BACKOUT(notify->next, notify);
SNMP_Notify_Destroy(notify);
}


/****************************************************************************
NAME:  notifytable_destroy_undo

PURPOSE: This routine attempts to undo a previous destroy set.  It
	  expects the old information to be pointed to by vb_priv and
	  tries to reinstall it.  If we can't reinstall the
	  notify we leave the cleanup routine alone in order to
	  get the FINISHED macro to run.

PARAMETERS:
	OIDC_T		Last component of the object id leading to 
			the leaf node in the MIB.  This is usually
			the identifier for the particular attribute
			in the table.
	int		Number of components in the unused part of the
			object identifier
	OIDC_T	   *	Unused part of the object identifier
	SNMP_PKT_T *	SNMP packet currently being processsed.
	VB_T	   *	Variable being processed.

RETURNS:  void
****************************************************************************/
/*ARGSUSED*/
static void
  notifytable_destroy_undo(OIDC_T	 last_match,
			   int		 tcount,
			   OIDC_T	*tlist,
			   SNMP_PKT_T 	*pktp,
			   VB_T		*vbp)
{
SNMP_NOTIFY_T *notify;
bits8_t name[ETC_NOTIFY_MAX];
ALENGTH_T name_len = ETC_NOTIFY_MAX;

/* assume things will go well and mark the vbp as done */
undoproc_good(pktp, vbp);

/* get the name info, no need to check as it's already been validated */
oid_to_string(tcount, tlist, &name_len, name, 1);

/* find the state block we saved and then reset the vb_priv info
   so we don't have any accidents later */
notify      = (SNMP_NOTIFY_T *)vbp->vb_priv;
vbp->vb_priv = 0;

if (SNMP_Notify_Install(notify, name, name_len) == 0) {
#if defined(SNMP_V3_NOTIFY_DESTROY_UNDO)
    if (SNMP_V3_NOTIFY_DESTROY_UNDO(pktp, vbp, 0, notify) == 0) {
        vbp->vb_free_priv = 0;
	return;
        }
    else
        SNMP_Notify_Deinstall(notify);
#else
    vbp->vb_free_priv = 0;
    return;
#endif
    }

SNMP_Notify_Destroy(notify);
undoproc_error(pktp, vbp, UNDO_FAILED);
return;
}

/****************************************************************************
NAME:  notifytable_create_undo

PURPOSE:  This routine attempts to undo a previous create set.  It expects
	  the new information to be pointed to by vb_priv and tries
	  to deinstall and destroy the entry.

PARAMETERS:
	OIDC_T		Last component of the object id leading to 
			the leaf node in the MIB.  This is usually
			the identifier for the particular attribute
			in the table.
	int		Number of components in the unused part of the
			object identifier
	OIDC_T	   *	Unused part of the object identifier
	SNMP_PKT_T *	SNMP packet currently being processsed.
	VB_T	   *	Variable being processed.

RETURNS:  void
****************************************************************************/
/*ARGSUSED*/
static void
  notifytable_create_undo(OIDC_T 	 last_match,
			  int		 tcount,
			  OIDC_T	*tlist,
			  SNMP_PKT_T 	*pktp,
			  VB_T		*vbp)
{
SNMP_NOTIFY_T *notify;

/* assume things will go well */
undoproc_good(pktp, vbp);

/* find the state block we saved and then reset the vb_priv info
   so we don't have any accidents later */
notify = (SNMP_NOTIFY_T *)vbp->vb_priv;
vbp->vb_priv	  = 0;
vbp->vb_free_priv = 0;

#if defined(SNMP_V3_NOTIFY_CREATE_UNDO)
if (SNMP_V3_NOTIFY_CREATE_UNDO(pktp, vbp, notify, 0)) {
    undoproc_error(pktp, vbp, UNDO_FAILED);
    return;
    }
#endif

SNMP_Notify_Deinstall(notify);
SNMP_Notify_Destroy(notify);
return;
}

/****************************************************************************
NAME:  notifytable_update_undo

PURPOSE:  This routine attempts to undo a previous update set.  It expects
	  the struct pointed to by vb_priv to contain the old information
	  and a pointer to the new (installed) struct.

PARAMETERS:
	OIDC_T		Last component of the object id leading to 
			the leaf node in the MIB.  This is usually
			the identifier for the particular attribute
			in the table.
	int		Number of components in the unused part of the
			object identifier
	OIDC_T	   *	Unused part of the object identifier
	SNMP_PKT_T *	SNMP packet currently being processsed.
	VB_T	   *	Variable being processed.

RETURNS:  void
****************************************************************************/
/*ARGSUSED*/
static void
  notifytable_update_undo(OIDC_T	 last_match,
			  int		 tcount,
			  OIDC_T	*tlist,
			  SNMP_PKT_T 	*pktp,
			  VB_T		*vbp)
{
SNMP_NOTIFY_T *cur_notify, *sav_notify;

/* assume things will go well */
undoproc_good(pktp, vbp);

/* find the state block we saved and then reset the vb_priv info
   so we don't have any accidents later */
sav_notify = (SNMP_NOTIFY_T *)vbp->vb_priv;
vbp->vb_priv	  = 0;
vbp->vb_free_priv = 0;

cur_notify = sav_notify->next;

#if defined(SNMP_V3_NOTIFY_UPDATE_UNDO)
if (SNMP_V3_NOTIFY_UPDATE_UNDO(pktp, vbp, cur_notify, sav_notify)) {
    undoproc_error(pktp, vbp, UNDO_FAILED);
    SNMP_Notify_Destroy(sav_notify);
    return;
    }
#endif

/* swap the info from saved notify back into current notify, we only
   need to move strings if the names are different finally free the
   saved block */

if (SNMP_Notify_Get_Tag(cur_notify) !=
    SNMP_Notify_Get_Tag(sav_notify)) {
    EBufferClean(&cur_notify->notify_tag);
    MEMCPY(&cur_notify->notify_tag, &sav_notify->notify_tag, 
	   sizeof(EBUFFER_T));
    EBufferInitialize(&sav_notify->notify_tag);
    }

SNMP_Notify_Set_Type(cur_notify,
		     SNMP_Notify_Get_Type(sav_notify));

SNMP_Notify_Set_Storage(cur_notify,
			SNMP_Notify_Get_Storage(sav_notify));

SNMP_Notify_Set_Status(cur_notify,
		       SNMP_Notify_Get_Status(sav_notify));

SNMP_Notify_Set_Flags(cur_notify,
		      SNMP_Notify_Get_Flags(sav_notify));

SNMP_Notify_Destroy(sav_notify);
return;
}

/****************************************************************************
NAME: notifytable_set_cleanup

PURPOSE: Free the saved notify and indicate that we are finished.

PARAMETERS: 
	ptr_t   A pointer to the vb that points to the notify
	        that contained the update information,
		cast as a ptr_t

RETURNS: Nothing
****************************************************************************/

static void
  notifytable_set_cleanup(ptr_t notifyptr)
{
if (((VB_T *)notifyptr)->vb_priv) {
    if (((VB_T *)notifyptr)->undoproc == notifytable_create_undo)
        ((VB_T *)notifyptr)->vb_priv = 0;
    else
        SNMP_Notify_Destroy(((VB_T *)notifyptr)->vb_priv);
    }

SNMP_V3_NOTIFY_FINISHED();
}

void
  snmpNotifyEntry_test(OIDC_T      lastmatch,
                       int         tcount,
                       OIDC_T     *tlist,
                       SNMP_PKT_T *pktp,
                       VB_T       *vbp)
{
SNMP_NOTIFY_T *notify, tempnotify, *newnotify;
sbits32_t value, ptret;
int cago = 0, create_row = 0, tag_chg = 0;
ALENGTH_T nlen = 0;
VB_T *tvbp, *rs_vbp = 0;
bits8_t name[ETC_NOTIFY_MAX];
bits8_t *tp;
ALENGTH_T name_len = ETC_NOTIFY_MAX;

/* get the list of var binds that may go into this structure
   then mark all the vbs except the first one as having been
   tested, set and done.  This means that vbp is taking
   responsibility for all of the other vbs in the row.  Then
   mark vbp as having it's test started & done so we don't
   have to worry about it later.  We can do this because
   the routine will run to completion */
group_by_getproc_and_instance(pktp, vbp, tcount, tlist);
for(tvbp = vbp->vb_link; tvbp; tvbp = tvbp->vb_link)
    setproc_all_bits(pktp, tvbp);
testproc_good(pktp, vbp);

/* gather the indexing information, the index will be of the form:
   <name>
   first we do some minor checks then we attempt to find the user */
if ((tcount > ETC_NOTIFY_MAX)                     ||
    oid_to_string(tcount, tlist, &name_len, name, 1)   ||
    (name_len == 0) || ((bits32_t)name_len != (bits32_t) tcount)) {
    testproc_error(pktp, vbp, NO_CREATION);
    return;
    }

notify = SNMP_Notify_Lookup(name, name_len);

/* is the leaf writable, (if it's read only it isn't writable) */
if (notify != 0) {
    if (SNMP_Notify_Get_Storage(notify) == ETC_STO_RONLY) {
	testproc_error(pktp, vbp, NOT_WRITABLE);      
	return;
	}

    MEMCPY(&tempnotify, notify, sizeof(SNMP_NOTIFY_T));
    }
else {
    SNMP_Notify_Set_Defaults(&tempnotify);
    create_row = 1;
    }
    
for (tvbp = vbp; tvbp; tvbp = tvbp->vb_link) {
    switch(tvbp->vb_ml.ml_last_match) {
        case LEAF_snmpNotifyTag:
	    nlen = EBufferUsed(&tvbp->value_u.v_string);
	    if (nlen > MAXSIZE_snmpNotifyTag) {
	        testproc_error(pktp, tvbp, WRONG_LENGTH);
		return;
	        }
            for (tp = EBufferStart(&tvbp->value_u.v_string);
                 tp < EBufferNext(&tvbp->value_u.v_string);
                 tp++) {
                if (tag_whitespace(*tp)) {
                    testproc_error(pktp, vbp, WRONG_VALUE);
                    return;
                    }
                }
	    EBufferPreLoad(BFL_IS_STATIC, &tempnotify.notify_tag,
			   EBufferStart(&tvbp->value_u.v_string), nlen);
	    break;

        case LEAF_snmpNotifyType:
	    value = tvbp->value_u.v_number;
	    if ((value != VAL_snmpNotifyType_trap) &&
		(value != VAL_snmpNotifyType_inform)) {
	        testproc_error(pktp, tvbp, WRONG_VALUE);
		return;
                }
	    SNMP_Notify_Set_Type(&tempnotify, (bits16_t)value);
	    break;

        case LEAF_snmpNotifyStorageType:
	    value = tvbp->value_u.v_number;
	    if ((value < ETC_STO_OTHER) ||
		(value > ETC_STO_RONLY) ||
                ((notify != 0) && (value > ETC_STO_NONVOL)) ||
		(SNMP_Notify_Get_Storage(&tempnotify) >= ETC_STO_PERM)) {
	        testproc_error(pktp, tvbp, WRONG_VALUE);
		return;
	        }
	    SNMP_Notify_Set_Storage(&tempnotify, (bits16_t)value);
	    break;

        case LEAF_snmpNotifyRowStatus:
	    value = tvbp->value_u.v_number;
	    switch (value) {
		case ETC_RS_ACTIVE:
		case ETC_RS_NIS:
		    if (create_row) {
			testproc_error(pktp, tvbp, INCONSISTENT_VALUE);
			return;
			}
		    break;
		case ETC_RS_CAGO:
		    if (create_row == 0) {
			testproc_error(pktp, tvbp, INCONSISTENT_VALUE);
			return;
			}
		    value = ETC_RS_ACTIVE;
		    cago = 1;
		    break;
		case ETC_RS_CAWAIT:
		    if (create_row == 0) {
			testproc_error(pktp, tvbp, INCONSISTENT_VALUE);
			return;
			}
		    value = ETC_RS_NREADY;
		    break;
		case ETC_RS_DESTROY:
                    if (SNMP_Notify_Get_Storage(&tempnotify) >= ETC_STO_PERM) {
                        testproc_error(pktp, tvbp, WRONG_VALUE);
                        return;
                        }
		    break;
		default:
		    testproc_error(pktp, tvbp, WRONG_VALUE);
		    return;
	        }

	    if (SNMP_Notify_Get_Status(&tempnotify) != ETC_RS_DESTROY) {
	        SNMP_Notify_Set_Status(&tempnotify, (bits16_t)value);
		rs_vbp = tvbp;