/* builds a result given a row, a varbind to set and the data */
int
netsnmp_table_data_build_result(netsnmp_handler_registration *reginfo,
                                netsnmp_agent_request_info *reqinfo,
                                netsnmp_request_info *request,
                                netsnmp_table_row *row,
                                int column,
                                u_char type,
                                u_char * result_data,
                                size_t result_data_len)
{
    oid             build_space[MAX_OID_LEN];

    if (!reginfo || !reqinfo || !request)
        return SNMPERR_GENERR;

    if (reqinfo->mode == MODE_GETNEXT || reqinfo->mode == MODE_GETBULK) {
        /*
         * only need to do this for getnext type cases where oid is changing 
         */
        memcpy(build_space, reginfo->rootoid,   /* registered oid */
               reginfo->rootoid_len * sizeof(oid));
        build_space[reginfo->rootoid_len] = 1;  /* entry */
        build_space[reginfo->rootoid_len + 1] = column; /* column */
        memcpy(build_space + reginfo->rootoid_len + 2,  /* index data */
               row->index_oid, row->index_oid_len * sizeof(oid));
        snmp_set_var_objid(request->requestvb, build_space,
                           reginfo->rootoid_len + 2 + row->index_oid_len);
    }
    snmp_set_var_typed_value(request->requestvb, type,
                             result_data, result_data_len);
    return SNMPERR_SUCCESS;     /* WWWXXX: check for bounds */
}

char           *
register_string_index(oid * name, size_t name_len, char *cp)
{
    netsnmp_variable_list varbind, *res;

    memset(&varbind, 0, sizeof(netsnmp_variable_list));
    varbind.type = ASN_OCTET_STR;
    snmp_set_var_objid(&varbind, name, name_len);
    if (cp != ANY_STRING_INDEX) {
        snmp_set_var_value(&varbind, (u_char *) cp, strlen(cp));
        res = register_index(&varbind, ALLOCATE_THIS_INDEX, main_session);
    } else {
        res = register_index(&varbind, ALLOCATE_ANY_INDEX, main_session);
    }

    if (res == NULL) {
        return NULL;
    } else {
        char *rv = (char *)malloc(res->val_len + 1);
        if (rv) {
            memcpy(rv, res->val.string, res->val_len);
            rv[res->val_len] = 0;
        }
        free(res);
        return rv;
    }
}

int
register_int_index(oid * name, size_t name_len, int val)
{
    netsnmp_variable_list varbind, *res;

    memset(&varbind, 0, sizeof(netsnmp_variable_list));
    varbind.type = ASN_INTEGER;
    snmp_set_var_objid(&varbind, name, name_len);
    varbind.val.string = varbind.buf;
    if (val != ANY_INTEGER_INDEX) {
        varbind.val_len = sizeof(long);
        *varbind.val.integer = val;
        res = register_index(&varbind, ALLOCATE_THIS_INDEX, main_session);
    } else {
        res = register_index(&varbind, ALLOCATE_ANY_INDEX, main_session);
    }

    if (res == NULL) {
        return -1;
    } else {
        int             rv = *(res->val.integer);
        free(res);
        return rv;
    }
}

void
build_new_oid(netsnmp_handler_registration *reginfo,
              netsnmp_table_request_info *tblreq_info,
              netsnmp_index *row, netsnmp_request_info *current)
{
    oid             coloid[MAX_OID_LEN];

    if (!tblreq_info || !reginfo || !row || !current)
        return;

    memcpy(coloid, reginfo->rootoid, reginfo->rootoid_len * sizeof(oid));

    /** table.entry */
    coloid[reginfo->rootoid_len] = 1;

    /** table.entry.column */
    coloid[reginfo->rootoid_len + 1] = tblreq_info->colnum;

    /** table.entry.column.index */
    memcpy(&coloid[reginfo->rootoid_len + 2], row->oids,
           row->len * sizeof(oid));

    snmp_set_var_objid(current->requestvb, coloid,
                       reginfo->rootoid_len + 2 + row->len);
}

netsnmp_variable_list *
_expObject_buildList( oid *root, size_t root_len, size_t prefix_len,
                      netsnmp_variable_list *template_list )
{
    netsnmp_variable_list *query_list = NULL;
    netsnmp_variable_list *vp1,  *vp2 = NULL;
    oid    name[ MAX_OID_LEN ];
    int i;

    if ( prefix_len ) {
        /*
         * For wildcarded objects, build a list of all relevant
         *   instances, using the template_list to provide the
         *   necessary instance suffixes.
         */
        memset( name, 0, sizeof(name));
        memcpy( name, root, root_len*sizeof(oid));
        for ( vp1 = template_list; vp1; vp1=vp1->next_variable ) {
            /*
             * Append a new varbind to the list for this object ...
             */
            if ( !query_list ) {
                query_list = (netsnmp_variable_list*)
                                 SNMP_MALLOC_TYPEDEF( netsnmp_variable_list );
                vp2 = query_list;
            } else {
                vp2->next_variable = (netsnmp_variable_list*)
                                 SNMP_MALLOC_TYPEDEF( netsnmp_variable_list );
                vp2 = vp2->next_variable;
            }
            /*
             * ... and set the OID using the template suffix
             */
            for ( i=0; i <= vp1->name_length - prefix_len; i++)
                name[ root_len+i ] = vp1->name[ prefix_len+i ];
            snmp_set_var_objid( vp2, name, root_len+i );
        }
    } else {
        /*
         * Otherwise, just use the (single) OID provided.
         */
        query_list = (netsnmp_variable_list*)
                                 SNMP_MALLOC_TYPEDEF( netsnmp_variable_list );
        snmp_set_var_objid( query_list, root, root_len );
    }
    return query_list;
}

void AlarmTrapSender::send_trap(AlarmTableDef& alarm_table_def)
{
  static const oid snmp_trap_oid[] = {1,3,6,1,6,3,1,1,4,1,0};
  static const oid clear_oid[] = {1,3,6,1,2,1,118,0,3};
  static const oid active_oid[] = {1,3,6,1,2,1,118,0,2};

  static const oid model_ptr_oid[] = {1,3,6,1,2,1,118,1,2,2,1,13,0};
  static const oid model_row_oid[] = {1,3,6,1,2,1,118,1,1,2,1,3,0,1,2};

  static const oid resource_id_oid[] = {1,3,6,1,2,1,118,1,2,2,1,10,0};
  static const oid zero_dot_zero[] = {0,0};

  netsnmp_variable_list var_trap;
  netsnmp_variable_list var_model_row;
  netsnmp_variable_list var_resource_id;

  memset(&var_trap, 0x00, sizeof(var_trap));
  memset(&var_model_row, 0x00, sizeof(var_model_row));
  memset(&var_resource_id, 0x00, sizeof(var_resource_id));

  var_trap.next_variable = &var_model_row;
  var_model_row.next_variable = &var_resource_id;
  var_resource_id.next_variable = NULL;

  snmp_set_var_objid(&var_trap, snmp_trap_oid, OID_LENGTH(snmp_trap_oid));
  if (alarm_table_def.severity() == AlarmDef::CLEARED)
  {
    snmp_set_var_typed_value(&var_trap, ASN_OBJECT_ID, (u_char*) clear_oid, sizeof(clear_oid));
  }
  else
  {
    snmp_set_var_typed_value(&var_trap, ASN_OBJECT_ID, (u_char*) active_oid, sizeof(active_oid));
  }

  snmp_set_var_objid(&var_model_row, model_ptr_oid, OID_LENGTH(model_ptr_oid));
  snmp_set_var_typed_value(&var_model_row, ASN_OBJECT_ID, (u_char*) model_row_oid, sizeof(model_row_oid));

  var_model_row.val.objid[ALARMMODELTABLEROW_INDEX] = alarm_table_def.index();
  var_model_row.val.objid[ALARMMODELTABLEROW_STATE] = alarm_table_def.state();

  snmp_set_var_objid(&var_resource_id, resource_id_oid, OID_LENGTH(resource_id_oid));
  snmp_set_var_typed_value(&var_resource_id, ASN_OBJECT_ID, (u_char*) zero_dot_zero, sizeof(zero_dot_zero));

  send_v2trap(&var_trap);

  snmp_reset_var_buffers(&var_trap);
}

int
unregister_string_index(oid * name, size_t name_len, char *cp)
{
    netsnmp_variable_list varbind;

    memset(&varbind, 0, sizeof(netsnmp_variable_list));
    varbind.type = ASN_OCTET_STR;
    snmp_set_var_objid(&varbind, name, name_len);
    snmp_set_var_value(&varbind, (u_char *) cp, strlen(cp));
    return (unregister_index(&varbind, FALSE, main_session));
}

int
my_test_handler(netsnmp_mib_handler *handler,
                netsnmp_handler_registration *reginfo,
                netsnmp_agent_request_info *reqinfo,
                netsnmp_request_info *requests)
{

    oid             myoid1[] = { 1, 2, 3, 4, 5, 6 };
    static u_long   accesses = 0;

    DEBUGMSGTL(("testhandler", "Got request:\n"));
    /*
     * loop through requests 
     */
    while (requests) {
        netsnmp_variable_list *var = requests->requestvb;

        DEBUGMSGTL(("testhandler", "  oid:"));
        DEBUGMSGOID(("testhandler", var->name, var->name_length));
        DEBUGMSG(("testhandler", "\n"));

        switch (reqinfo->mode) {
        case MODE_GET:
            if (netsnmp_oid_equals(var->name, var->name_length, myoid1, 6)
                == 0) {
                snmp_set_var_typed_value(var, ASN_INTEGER,
                                         (u_char *) & accesses,
                                         sizeof(accesses));
                return SNMP_ERR_NOERROR;
            }
            break;

        case MODE_GETNEXT:
            if (snmp_oid_compare(var->name, var->name_length, myoid1, 6)
                < 0) {
                snmp_set_var_objid(var, myoid1, 6);
                snmp_set_var_typed_value(var, ASN_INTEGER,
                                         (u_char *) & accesses,
                                         sizeof(accesses));
                return SNMP_ERR_NOERROR;
            }
            break;

        default:
            netsnmp_set_request_error(reqinfo, requests, SNMP_ERR_GENERR);
            break;
        }

        requests = requests->next;
    }
    return SNMP_ERR_NOERROR;
}

int
unregister_int_index(oid * name, size_t name_len, int val)
{
    netsnmp_variable_list varbind;

    memset(&varbind, 0, sizeof(netsnmp_variable_list));
    varbind.type = ASN_INTEGER;
    snmp_set_var_objid(&varbind, name, name_len);
    varbind.val.string = varbind.buf;
    varbind.val_len = sizeof(long);
    *varbind.val.integer = val;
    return (unregister_index(&varbind, FALSE, main_session));
}

int
unregister_oid_index(oid * name, size_t name_len,
                     oid * value, size_t value_len)
{
    netsnmp_variable_list varbind;

    memset(&varbind, 0, sizeof(netsnmp_variable_list));
    varbind.type = ASN_OBJECT_ID;
    snmp_set_var_objid(&varbind, name, name_len);
    snmp_set_var_value(&varbind, (u_char *) value,
                       value_len * sizeof(oid));
    return (unregister_index(&varbind, FALSE, main_session));
}

struct variable_list *
register_oid_index( oid *name, size_t name_len,
		    oid *value, size_t value_len )
{
    struct variable_list varbind;
    
    memset( &varbind, 0, sizeof(struct variable_list));
    varbind.type = ASN_OBJECT_ID;
    snmp_set_var_objid( &varbind, name, name_len );
    if ( value != ANY_OID_INDEX ) {
        snmp_set_var_value( &varbind, (u_char*)value, value_len*sizeof(oid) );
	return( register_index( &varbind, ALLOCATE_THIS_INDEX, main_session ));
    }
    else
	return( register_index( &varbind, ALLOCATE_ANY_INDEX, main_session ));
}

/*
 * Clone an SNMP variable data structure.
 * Sets pointers to structure private storage, or
 * allocates larger object identifiers and values as needed.
 *
 * Caller must make list association for cloned variable.
 *
 * Returns 0 if successful.
 */
int
snmp_clone_var(netsnmp_variable_list * var, netsnmp_variable_list * newvar)
{
    if (!newvar || !var)
        return 1;

    memmove(newvar, var, sizeof(netsnmp_variable_list));
    newvar->next_variable = 0;
    newvar->name = 0;
    newvar->val.string = 0;
    newvar->data = 0;
    newvar->dataFreeHook = 0;
    newvar->index = 0;

    /*
     * Clone the object identifier and the value.
     * Allocate memory iff original will not fit into local storage.
     */
    if (snmp_set_var_objid(newvar, var->name, var->name_length))
        return 1;

    /*
     * need a pointer and a length to copy a string value. 
     */
    if (var->val.string && var->val_len) {
        if (var->val.string != &var->buf[0]) {
            if (var->val_len <= sizeof(var->buf))
                newvar->val.string = newvar->buf;
            else {
                newvar->val.string = (u_char *) malloc(var->val_len);
                if (!newvar->val.string)
                    return 1;
            }
            memmove(newvar->val.string, var->val.string, var->val_len);
        } else {                /* fix the pointer to new local store */
            newvar->val.string = newvar->buf;
        }
    } else {
        newvar->val.string = 0;
        newvar->val_len = 0;
    }

    return 0;
}

int _mteEvent_fire_set (struct mteEvent *entry,    /* The event to fire */
                        struct mteTrigger *trigger,    /* Trigger that fired */
                        oid * suffix, size_t sfx_len)    /* Matching instance */
{
    netsnmp_variable_list var;

    oid set_oid[MAX_OID_LEN];

    size_t set_len;

    /*
     * Set the basic assignment OID...
     */
    memset (set_oid, 0, sizeof (set_oid));
    memcpy (set_oid, entry->mteSetOID, entry->mteSetOID_len * sizeof (oid));
    set_len = entry->mteSetOID_len;

    /*
     * ... if the trigger value is wildcarded (sfx_len > 0),
     *       *and* the SET event entry is wildcarded,
     *        then add the supplied instance suffix...
     */
    if (sfx_len && entry->flags & MTE_SET_FLAG_OBJWILD)
    {
        memcpy (&set_oid[set_len], suffix, sfx_len * sizeof (oid));
        set_len += sfx_len;
    }

    /*
     * ... finally build the assignment varbind,
     *        and pass it to be acted on.
     *
     * XXX: Need to handle (remote) targets and non-default contexts
     */
    memset (&var, 0, sizeof (var));
    snmp_set_var_objid (&var, set_oid, set_len);
    snmp_set_var_typed_integer (&var, ASN_INTEGER, entry->mteSetValue);
    if (entry->session)
        return netsnmp_query_set (&var, entry->session);
    else
        return netsnmp_query_set (&var, trigger->session);

    /* XXX - Need to check result */
}

static netsnmp_variable_list *
oa_bind_var(netsnmp_variable_list * prev,
            void *value, int type, size_t sz_val, oid * oid, size_t sz_oid)
{
    netsnmp_variable_list *var;

    var = (netsnmp_variable_list *) malloc(sizeof(netsnmp_variable_list));
    if (!var) {
        ag_trace("FATAL: cannot malloc in oa_bind_var\n");
        exit(-1);               /* Sorry :( */
    }
    memset(var, 0, sizeof(netsnmp_variable_list));
    var->next_variable = prev;
    snmp_set_var_objid(var, oid, sz_oid);
    snmp_set_var_value(var, (u_char *) value, sz_val);
    var->type = type;

    return var;
}

char *
register_string_index( oid *name, size_t name_len, char *cp )
{
    struct variable_list varbind, *res;
    
    memset( &varbind, 0, sizeof(struct variable_list));
    varbind.type = ASN_OCTET_STR;
    snmp_set_var_objid( &varbind, name, name_len );
    if ( cp != ANY_STRING_INDEX ) {
        snmp_set_var_value( &varbind, (u_char *)cp, strlen(cp) );
	res = register_index( &varbind, ALLOCATE_THIS_INDEX, main_session );
    }
    else
	res = register_index( &varbind, ALLOCATE_ANY_INDEX, main_session );

    if ( res == NULL )
	return NULL;
    else
	return (char *)res->val.string;
}

void send_enterprise_trap_vars (int trap, 
		     int specific,
		     oid *enterprise, int enterprise_length,
		     struct variable_list *vars)
{
    struct variable_list uptime_var, snmptrap_var, enterprise_var;
    struct variable_list *v2_vars, *last_var=NULL;
    struct snmp_pdu	*template_pdu, *pdu;
    struct timeval	 now;
    long uptime;
    struct sockaddr_in *pduIp;
    struct trap_sink *sink;
    oid temp_oid[MAX_OID_LEN];
    
		/*
		 * Initialise SNMPv2 required variables
		 */
    gettimeofday(&now, NULL);
    uptime = calculate_time_diff(&now, &starttime);
    memset (&uptime_var, 0, sizeof (struct variable_list));
    snmp_set_var_objid( &uptime_var, sysuptime_oid, OID_LENGTH(sysuptime_oid));
    snmp_set_var_value( &uptime_var, (u_char *)&uptime, sizeof(uptime) );
    uptime_var.type           = ASN_TIMETICKS;
    uptime_var.next_variable  = &snmptrap_var;

    memset (&snmptrap_var, 0, sizeof (struct variable_list));
    snmp_set_var_objid( &snmptrap_var, snmptrap_oid, OID_LENGTH(snmptrap_oid));
	/* value set later .... */
    snmptrap_var.type           = ASN_OBJECT_ID;
    if ( vars )
	snmptrap_var.next_variable  = vars;
    else
	snmptrap_var.next_variable  = &enterprise_var;

			/* find end of provided varbind list,
			   ready to append the enterprise info if necessary */
    last_var = vars;
    while ( last_var && last_var->next_variable )
	last_var = last_var->next_variable;

    memset (&enterprise_var, 0, sizeof (struct variable_list));
    snmp_set_var_objid( &enterprise_var,
		 snmptrapenterprise_oid, OID_LENGTH(snmptrapenterprise_oid));
    snmp_set_var_value( &enterprise_var, (u_char *)enterprise, enterprise_length*sizeof(oid));
    enterprise_var.type           = ASN_OBJECT_ID;
    enterprise_var.next_variable  = NULL;

    v2_vars = &uptime_var;

		/*
		 *  Create a template PDU, ready for sending
		 */
    template_pdu = snmp_pdu_create( SNMP_MSG_TRAP );
    if ( template_pdu == NULL ) {
		/* Free memory if value stored dynamically */
	snmp_set_var_value( &enterprise_var, NULL, 0);
	return;
    }
    template_pdu->trap_type     = trap;
    template_pdu->specific_type = specific;
    if ( snmp_clone_mem((void **)&template_pdu->enterprise,
				enterprise, enterprise_length*sizeof(oid))) {
	snmp_free_pdu( template_pdu );
	snmp_set_var_value( &enterprise_var, NULL, 0);
	return;
    }
    template_pdu->enterprise_length = enterprise_length;
    template_pdu->flags |= UCD_MSG_FLAG_FORCE_PDU_COPY;
    pduIp = (struct sockaddr_in *)&template_pdu->agent_addr;
    pduIp->sin_family		 = AF_INET;
    pduIp->sin_len               = sizeof(*pduIp);
    pduIp->sin_addr.s_addr	 = get_myaddr();
    template_pdu->time		 	 = uptime;

		/*
		 *  Now use the parameters to determine
		 *    which v2 variables are needed,
		 *    and what values they should take.
		 */
    switch ( trap ) {
	case -1:	/*
			 *	SNMPv2 only
			 *  Check to see whether the variables provided
			 *    are sufficient for SNMPv2 notifications
			 */
		if (vars && snmp_oid_compare(vars->name, vars->name_length,
				sysuptime_oid, OID_LENGTH(sysuptime_oid)) == 0 )
			v2_vars = vars;
		else
		if (vars && snmp_oid_compare(vars->name, vars->name_length,
				snmptrap_oid, OID_LENGTH(snmptrap_oid)) == 0 )
			uptime_var.next_variable = vars;
		else {
			/* Hmmm... we don't seem to have a value - oops! */
			snmptrap_var.next_variable = vars;
		}
		last_var = NULL;	/* Don't need enterprise info */
		break;

			/* "Standard" SNMPv1 traps */
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                                                           iinfo);
                            }
                        }
                        break;

                    case MODE_GET_STASH:
                        /* collect data for each column for every row */
                        build_oid_noalloc(myname, MAX_OID_LEN, &myname_len,
                                          coloid, coloid_len, index_search);
                        reqinfo->mode = MODE_GET;
                        if (reqtmp)
                            ldata =
                                netsnmp_get_list_node(reqtmp->parent_data,
                                                      TABLE_ITERATOR_NAME);
                        if (!ldata) {
                            netsnmp_request_add_list_data(reqtmp,
                                                          netsnmp_create_data_list
                                                          (TABLE_ITERATOR_NAME,
                                                           callback_data_context,
                                                           NULL));
                        } else {
                            /* may have changed */
                            ldata->data = callback_data_context;
                        }

                        table_info->indexes = index_search;
                        for(i = table_reg_info->min_column;
                            i <= (int)table_reg_info->max_column; i++) {
                            myname[reginfo->rootoid_len + 1] = i;
                            table_info->colnum = i;
                            vb = reqtmp->requestvb =
                                SNMP_MALLOC_TYPEDEF(netsnmp_variable_list);
                            vb->type = ASN_NULL;
                            snmp_set_var_objid(vb, myname, myname_len);
                            netsnmp_call_next_handler(handler, reginfo,
                                                      reqinfo, reqtmp);
                            reqtmp->requestvb = NULL;
                            reqtmp->processed = 0;
                            if (vb->type != ASN_NULL) { /* XXX, not all */
                                netsnmp_oid_stash_add_data(cinfo, myname,
                                                           myname_len, vb);
                            } else {
                                snmp_free_var(vb);
                            }
                        }
                        reqinfo->mode = MODE_GET_STASH;
                        break;

                    case MODE_GETNEXT:
                        /* looking for "next" matches */
                        if (netsnmp_check_getnext_reply
                            (request, coloid, coloid_len, index_search,
                             &ti_info->results)) {
                            netsnmp_iterator_remember(request,
                                                      ti_info->results->name,
                                                      ti_info->results->name_length,
                                                      callback_data_context,
                                                      callback_loop_context, iinfo);
                            /*
                             *  If we've been told that the rows are sorted,
                             *   then the first valid one we find
                             *   must be the right one.
                             */
                            if (iinfo->flags & NETSNMP_ITERATOR_FLAG_SORTED)
                                request_count--;
                        

/** @internal Implements the stash_cache handler */
int
netsnmp_stash_cache_helper(netsnmp_mib_handler *handler,
                           netsnmp_handler_registration *reginfo,
                           netsnmp_agent_request_info *reqinfo,
                           netsnmp_request_info *requests)
{
    netsnmp_cache            *cache;
    netsnmp_stash_cache_info *cinfo;
    netsnmp_oid_stash_node   *cnode;
    netsnmp_variable_list    *cdata;
    netsnmp_request_info     *request;

    DEBUGMSGTL(("helper:stash_cache", "Got request\n"));

    cache = netsnmp_cache_reqinfo_extract( reqinfo, reginfo->handlerName );
    if (!cache) {
        DEBUGMSGTL(("helper:stash_cache", "No cache structure\n"));
        return SNMP_ERR_GENERR;
    }
    cinfo = (netsnmp_stash_cache_info *) cache->magic;

    switch (reqinfo->mode) {

    case MODE_GET:
        DEBUGMSGTL(("helper:stash_cache", "Processing GET request\n"));
        for(request = requests; request; request = request->next) {
            cdata = (netsnmp_variable_list*)
                netsnmp_oid_stash_get_data(cinfo->cache,
                                           requests->requestvb->name,
                                           requests->requestvb->name_length);
            if (cdata && cdata->val.string && cdata->val_len) {
                DEBUGMSGTL(("helper:stash_cache", "Found cached GET varbind\n"));
                DEBUGMSGOID(("helper:stash_cache", cdata->name, cdata->name_length));
                DEBUGMSG(("helper:stash_cache", "\n"));
                snmp_set_var_typed_value(request->requestvb, cdata->type,
                                         cdata->val.string, cdata->val_len);
            }
        }
        break;

    case MODE_GETNEXT:
        DEBUGMSGTL(("helper:stash_cache", "Processing GETNEXT request\n"));
        for(request = requests; request; request = request->next) {
            cnode =
                netsnmp_oid_stash_getnext_node(cinfo->cache,
                                               requests->requestvb->name,
                                               requests->requestvb->name_length);
            if (cnode && cnode->thedata) {
                cdata =  (netsnmp_variable_list*)cnode->thedata;
                if (cdata->val.string && cdata->name && cdata->name_length) {
                    DEBUGMSGTL(("helper:stash_cache", "Found cached GETNEXT varbind\n"));
                    DEBUGMSGOID(("helper:stash_cache", cdata->name, cdata->name_length));
                    DEBUGMSG(("helper:stash_cache", "\n"));
                    snmp_set_var_typed_value(request->requestvb, cdata->type,
                                             cdata->val.string, cdata->val_len);
                    snmp_set_var_objid(request->requestvb, cdata->name,
                                       cdata->name_length);
                }
            }
        }
        break;

    default:
        cinfo->cache_valid = 0;
        return netsnmp_call_next_handler(handler, reginfo, reqinfo,
                                         requests);
    }

    return SNMP_ERR_NOERROR;
}

//.........这里部分代码省略.........
                                                &callback_data_context,
                                                index_search, iinfo);
                }
            }

            break;

        case MODE_GET:
        case MODE_SET_RESERVE1:
            /*
             * loop through all data till exact results are found 
             */

            while (index_search) {
                build_oid_noalloc(myname, MAX_OID_LEN, &myname_len,
                                  coloid, coloid_len, index_search);
                if (snmp_oid_compare(myname, myname_len,
                                     requests->requestvb->name,
                                     requests->requestvb->name_length) ==
                    0) {
                    /*
                     * found the exact match, so we're done 
                     */
                    if (iinfo->make_data_context && !callback_data_context) {
                        callback_data_context =
                            (iinfo->
                             make_data_context) (callback_loop_context,
                                                 iinfo);

                    }
                    callback_data_keep = callback_data_context;
                    callback_data_context = NULL;
                    results = snmp_clone_varbind(index_search);
                    snmp_set_var_objid(results, myname, myname_len);
                    goto got_results;
                } else {
                    /*
                     * free not-needed data context 
                     */
                    if (callback_data_context && iinfo->free_data_context) {
                        (iinfo->free_data_context) (callback_data_context,
                                                    iinfo);
                        callback_data_context = NULL;
                    }

                }

                /*
                 * get the next node in the data chain 
                 */
                index_search =
                    (iinfo->get_next_data_point) (&callback_loop_context,
                                                  &callback_data_context,
                                                  index_search, iinfo);
            }
            break;

        default:
            /*
             * the rest of the set states have been dealt with already 
             */
            goto got_results;
        }

        /*
         * XXX: free index_search? 

/** implements the old_api handler */
int
netsnmp_old_api_helper(netsnmp_mib_handler *handler,
                       netsnmp_handler_registration *reginfo,
                       netsnmp_agent_request_info *reqinfo,
                       netsnmp_request_info *requests)
{

#if MIB_CLIENTS_ARE_EVIL
    oid             save[MAX_OID_LEN];
    size_t          savelen = 0;
#endif
    struct variable compat_var, *cvp = &compat_var;
    int             exact = 1;
    int             status;

    struct variable *vp;
    netsnmp_old_api_cache *cacheptr;
    netsnmp_agent_session *oldasp = NULL;
    u_char         *access = NULL;
    WriteMethod    *write_method = NULL;
    size_t          len;
    size_t          tmp_len;
    oid             tmp_name[MAX_OID_LEN];

    vp = (struct variable *) handler->myvoid;

    /*
     * create old variable structure with right information 
     */
    memcpy(cvp->name, reginfo->rootoid,
           reginfo->rootoid_len * sizeof(oid));
    cvp->namelen = reginfo->rootoid_len;
    cvp->type = vp->type;
    cvp->magic = vp->magic;
    cvp->acl = vp->acl;
    cvp->findVar = vp->findVar;

    switch (reqinfo->mode) {
    case MODE_GETNEXT:
    case MODE_GETBULK:
        exact = 0;
    }

    for (; requests; requests = requests->next) {

#if MIB_CLIENTS_ARE_EVIL
        savelen = requests->requestvb->name_length;
        memcpy(save, requests->requestvb->name, savelen * sizeof(oid));
#endif

        switch (reqinfo->mode) {
        case MODE_GET:
        case MODE_GETNEXT:
#ifndef NETSNMP_NO_WRITE_SUPPORT
        case MODE_SET_RESERVE1:
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
            /*
             * Actually call the old mib-module function 
             */
            if (vp && vp->findVar) {
                memcpy(tmp_name, requests->requestvb->name,
                                 requests->requestvb->name_length*sizeof(oid));
                tmp_len = requests->requestvb->name_length;
                access = (*(vp->findVar)) (cvp, tmp_name, &tmp_len,
                                           exact, &len, &write_method);
                snmp_set_var_objid( requests->requestvb, tmp_name, tmp_len );
            }
            else
                access = NULL;

#ifdef WWW_FIX
            if (IS_DELEGATED(cvp->type)) {
                add_method = (AddVarMethod *) statP;
                requests->delayed = 1;
                have_delegated = 1;
                continue;       /* WWW: This may not get to the right place */
            }
#endif

            /*
             * WWW: end range checking 
             */
            if (access) {
                /*
                 * result returned 
                 */
#ifndef NETSNMP_NO_WRITE_SUPPORT
                if (reqinfo->mode != MODE_SET_RESERVE1)
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
                    snmp_set_var_typed_value(requests->requestvb,
                                             cvp->type, access, len);
            } else {
                /*
                 * no result returned 
                 */
#if MIB_CLIENTS_ARE_EVIL
                if (access == NULL) {
                    if (netsnmp_oid_equals(requests->requestvb->name,
                                         requests->requestvb->name_length,
//.........这里部分代码省略.........