v3mt_com.c

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

community = (SNMP_COMMUNITY_T *)(((VB_T *)commptr)->vb_priv);
SNMP_V3_COMM_UPDATE_BACKOUT(community->next, community);
SNMP_Community_Destroy(community);
}


/****************************************************************************
NAME:  commtable_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
	  community 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
  commtable_destroy_undo(OIDC_T 	 last_match,
                         int		 tcount,
                         OIDC_T	        *tlist,
                         SNMP_PKT_T 	*pktp,
                         VB_T		*vbp)
{
SNMP_COMMUNITY_T *community;
bits8_t name[ETC_COMMUNITY_MAX];
ALENGTH_T name_len = ETC_COMMUNITY_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 */
community      = (SNMP_COMMUNITY_T *)vbp->vb_priv;
vbp->vb_priv = 0;

if (SNMP_Community_Install(community, name, name_len) == ENVOY_ERR_NOERR) {
#if defined(SNMP_V3_COMM_DESTROY_UNDO)
    if (SNMP_V3_COMM_DESTROY_UNDO(pktp, vbp, 0, community) == 0) {
        vbp->vb_free_priv = 0;
	return;
        }
    else
        SNMP_Community_Deinstall(community);
#else
    vbp->vb_free_priv = 0;
    return;
#endif
    }

SNMP_Community_Destroy(community);
undoproc_error(pktp, vbp, UNDO_FAILED);
return;
}

/****************************************************************************
NAME:  commtable_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
  commtable_create_undo(OIDC_T	 	 last_match,
			 int		 tcount,
			 OIDC_T		*tlist,
			 SNMP_PKT_T 	*pktp,
			 VB_T		*vbp)
{
SNMP_COMMUNITY_T *community;

/* 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 */
community = (SNMP_COMMUNITY_T *)vbp->vb_priv;
vbp->vb_priv	  = 0;
vbp->vb_free_priv = 0;

#if defined(SNMP_V3_COMM_CREATE_UNDO)
if (SNMP_V3_COMM_CREATE_UNDO(pktp, vbp, community, 0)) {
    undoproc_error(pktp, vbp, UNDO_FAILED);
    return;
    }
#endif

SNMP_Community_Deinstall(community);
SNMP_Community_Destroy(community);
return;
}

/****************************************************************************
NAME:  commtable_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
  commtable_update_undo(OIDC_T		 last_match,
                        int		 tcount,
                        OIDC_T		*tlist,
                        SNMP_PKT_T 	*pktp,
                        VB_T		*vbp)
{
SNMP_COMMUNITY_T *cur_community, *sav_community;

/* 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_community = (SNMP_COMMUNITY_T *)vbp->vb_priv;
vbp->vb_priv	  = 0;
vbp->vb_free_priv = 0;

cur_community = sav_community->next;

#if defined(SNMP_V3_COMM_UPDATE_UNDO)
if (SNMP_V3_COMM_UPDATE_UNDO(pktp, vbp, cur_community, sav_community)) {
    undoproc_error(pktp, vbp, UNDO_FAILED);
    SNMP_Community_Destroy(sav_community);
    return;
    }
#endif

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

if (SNMP_Community_Get_Name(cur_community) !=
    SNMP_Community_Get_Name(sav_community)) {
    EBufferClean(&cur_community->comm_name);
    MEMCPY(&cur_community->comm_name, &sav_community->comm_name,
           sizeof(EBUFFER_T));
    EBufferInitialize(&sav_community->comm_name);
    }

if (SNMP_Community_Get_Sec_Name(cur_community) !=
    SNMP_Community_Get_Sec_Name(sav_community)) {
    EBufferClean(&cur_community->comm_sec_name);
    MEMCPY(&cur_community->comm_sec_name, &sav_community->comm_sec_name,
           sizeof(EBUFFER_T));
    EBufferInitialize(&sav_community->comm_sec_name);
    }

if (SNMP_Community_Get_Con_ID(cur_community) !=
    SNMP_Community_Get_Con_ID(sav_community)) {
    EBufferClean(&cur_community->comm_con_id);
    MEMCPY(&cur_community->comm_con_id, &sav_community->comm_con_id,
           sizeof(EBUFFER_T));
    EBufferInitialize(&sav_community->comm_con_id);
    }

if (SNMP_Community_Get_Con_Name(cur_community) !=
    SNMP_Community_Get_Con_Name(sav_community)) {
    EBufferClean(&cur_community->comm_con_name);
    MEMCPY(&cur_community->comm_con_name, &sav_community->comm_con_name,
           sizeof(EBUFFER_T));
    EBufferInitialize(&sav_community->comm_con_name);
    }

if (SNMP_Community_Get_Tag(cur_community) !=
    SNMP_Community_Get_Tag(sav_community)) {
    EBufferClean(&cur_community->comm_tag);
    MEMCPY(&cur_community->comm_tag, &sav_community->comm_tag,
           sizeof(EBUFFER_T));
    EBufferInitialize(&sav_community->comm_tag);
    }

SNMP_Community_Set_Status(cur_community, 
                          SNMP_Community_Get_Status(sav_community));
SNMP_Community_Set_Storage(cur_community, 
                           SNMP_Community_Get_Storage(sav_community));
SNMP_Community_Set_Flags(cur_community, 
                         SNMP_Community_Get_Flags(sav_community));

SNMP_Community_Destroy(sav_community);
return;
}


/****************************************************************************
NAME: commtable_set_cleanup

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

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

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

static void
  commtable_set_cleanup(ptr_t commptr)
{
if (((VB_T *)commptr)->vb_priv) {
    if (((VB_T *)commptr)->undoproc == commtable_create_undo)
        ((VB_T *)commptr)->vb_priv = 0;
    else
        SNMP_Community_Destroy(((VB_T *)commptr)->vb_priv);
    }
SNMP_V3_COMM_FINISHED();
}


void
  snmpCommunityEntry_test(OIDC_T      lastmatch,
                          int         tcount,
                          OIDC_T     *tlist,
                          SNMP_PKT_T *pktp,
                          VB_T       *vbp)
{
SNMP_COMMUNITY_T *community, tempcommunity, *newcommunity;
sbits32_t value, ptret;
int cago = 0, create_row = 0, cn_chg = 0, sn_chg = 0, cid_chg = 0;
int nm_chg = 0, ct_chg = 0;
ALENGTH_T nlen = 0;
VB_T *tvbp, *cn_vbp = 0, *sn_vbp = 0, *rs_vbp = 0;
bits8_t comm_index[ETC_COMMUNITY_MAX];
bits8_t *tp;
ALENGTH_T index_len = ETC_COMMUNITY_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:
   <index>
   first we do some minor checks then we attempt to find the community */
if ((tcount > ETC_COMMUNITY_MAX)                     ||
    oid_to_string(tcount, tlist, &index_len, comm_index, 1)   ||
    (index_len == 0) || ((bits32_t)index_len != (bits32_t) tcount)) {
    testproc_error(pktp, vbp, NO_CREATION);
    return;
    }

community = SNMP_Community_Lookup(comm_index, index_len);

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

    MEMCPY(&tempcommunity, community, sizeof(SNMP_COMMUNITY_T));
    }
else {
    SNMP_Community_Set_Defaults(&tempcommunity);
    EBufferClean(&tempcommunity.comm_con_id);
    EBufferPreLoad(BFL_IS_STATIC, &tempcommunity.comm_con_id,
                   v3_my_engine->id, v3_my_engine->id_len);
    create_row = 1;
    }
    
for (tvbp = vbp; tvbp; tvbp = tvbp->vb_link) {
    switch(tvbp->vb_ml.ml_last_match) {
        case LEAF_snmpCommunityName:
            nlen = EBufferUsed(&tvbp->value_u.v_string);
            EBufferPreLoad(BFL_IS_STATIC, &tempcommunity.comm_name,
                           EBufferStart(&tvbp->value_u.v_string), nlen);
            cn_vbp = tvbp;
            break;

        case LEAF_snmpCommunitySecurityName:
            nlen = EBufferUsed(&tvbp->value_u.v_string);
            if ((nlen < MINSIZE_snmpCommunitySecurityName) ||
                (nlen > MAXSIZE_snmpCommunitySecurityName)) {
                testproc_error(pktp, tvbp, WRONG_LENGTH);
                return;
                }
            EBufferPreLoad(BFL_IS_STATIC, &tempcommunity.comm_sec_name,
                           EBufferStart(&tvbp->value_u.v_string), nlen);
            sn_vbp = tvbp;
            break;

        case LEAF_snmpCommunityContextEngineID:
            nlen = EBufferUsed(&tvbp->value_u.v_string);
            if ((nlen < MINSIZE_snmpCommunityContextEngineID) ||
                (nlen > MAXSIZE_snmpCommunityContextEngineID)) {
                testproc_error(pktp, tvbp, WRONG_LENGTH);
                return;
                }
            EBufferPreLoad(BFL_IS_STATIC, &tempcommunity.comm_con_id,
                           EBufferStart(&tvbp->value_u.v_string), nlen);
            break;

        case LEAF_snmpCommunityContextName:
            nlen = EBufferUsed(&tvbp->value_u.v_string);
            if (nlen > MAXSIZE_snmpCommunityContextName) {
                testproc_error(pktp, tvbp, WRONG_LENGTH);
                return;
                }
            EBufferPreLoad(BFL_IS_STATIC, &tempcommunity.comm_con_name,
                           EBufferStart(&tvbp->value_u.v_string), nlen);
            break;

        case LEAF_snmpCommunityTransportTag:
            nlen = EBufferUsed(&tvbp->value_u.v_string);
            if (nlen > MAXSIZE_snmpCommunityTransportTag) {
                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, &tempcommunity.comm_tag,
                           EBufferStart(&tvbp->value_u.v_string), nlen);
            break;

        case LEAF_snmpCommunityStorageType:
	    value = tvbp->value_u.v_number;
	    if ((value < ETC_STO_OTHER) ||
		(value > ETC_STO_RONLY) ||
                ((community != 0) && (value > ETC_STO_NONVOL)) ||
		(SNMP_Community_Get_Storage(&tempcommunity) >
                 ETC_STO_NONVOL)) {
	        testproc_error(pktp, tvbp, WRONG_VALUE);
		return;
	        }
	    SNMP_Community_Set_Storage(&tempcommunity, (bits16_t)value);
	    break;

        case LEAF_snmpCommunityStatus:
	    value = tvbp->value_u.v_number;