schedtable.c

开发snmp的开发包有两个开放的SNMP开发库

/*
 * DisMan Schedule MIB:
 *     Core implementation of the schedTable MIB interface.
 * See 'schedCore.c' for active behaviour of this table.
 *
 * (based on mib2c.table_data.conf output)
 */

#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "utilities/iquery.h"
#include "disman/schedule/schedCore.h"
#include "disman/schedule/schedTable.h"

/** Initializes the schedTable module */
void
init_schedTable(void)
{
    static oid      schedTable_oid[] = { 1, 3, 6, 1, 2, 1, 63, 1, 2 };
    size_t          schedTable_oid_len = OID_LENGTH(schedTable_oid);
    netsnmp_handler_registration    *reg;
    netsnmp_table_registration_info *table_info;

    DEBUGMSGTL(("disman:schedule:init", "Initializing table\n"));
    /*
     * Ensure the schedule table container is available...
     */
    init_schedule_container();

    /*
     * ... then set up the MIB interface.
     */
    reg = netsnmp_create_handler_registration("schedTable",
                                            schedTable_handler,
                                            schedTable_oid,
                                            schedTable_oid_len,
                                            HANDLER_CAN_RWRITE);

    table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
    netsnmp_table_helper_add_indexes(table_info,
                                     ASN_OCTET_STR,  /* index: schedOwner */
                                     ASN_OCTET_STR,  /* index: schedName  */
                                     0);
    table_info->min_column = COLUMN_SCHEDDESCR;
    table_info->max_column = COLUMN_SCHEDTRIGGERS;

    netsnmp_tdata_register(reg, schedule_table, table_info);
}


/** handles requests for the schedTable table */
int
schedTable_handler(netsnmp_mib_handler *handler,
                   netsnmp_handler_registration *reginfo,
                   netsnmp_agent_request_info *reqinfo,
                   netsnmp_request_info *requests)
{

    netsnmp_request_info       *request;
    netsnmp_table_request_info *tinfo;
    netsnmp_tdata_row          *row;
    struct schedTable_entry    *entry;
    int    recalculate = 0;
    size_t len;
    char  *cp;
    char   owner[SCHED_STR1_LEN+1];
    char   name[ SCHED_STR1_LEN+1];
    int    ret;

    DEBUGMSGTL(("disman:schedule:mib", "Schedule handler (%d)\n",
                                        reqinfo->mode));
    switch (reqinfo->mode) {
        /*
         * Read-support (also covers GetNext requests)
         */
    case MODE_GET:
        for (request = requests; request; request = request->next) {
            entry = (struct schedTable_entry *)
                    netsnmp_tdata_extract_entry(request);
            tinfo = netsnmp_extract_table_info( request);

            switch (tinfo->colnum) {
            case COLUMN_SCHEDDESCR:
                snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
                                         entry->schedDescr,
                                  strlen(entry->schedDescr));
                break;
            case COLUMN_SCHEDINTERVAL:
                snmp_set_var_typed_integer(request->requestvb, ASN_UNSIGNED,
                                           entry->schedInterval);
                break;
            case COLUMN_SCHEDWEEKDAY:
                snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
                                        &entry->schedWeekDay,
                                  sizeof(entry->schedWeekDay));
                break;
            case COLUMN_SCHEDMONTH:
                snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
                                         entry->schedMonth,
                                  sizeof(entry->schedMonth));
                break;
            case COLUMN_SCHEDDAY:
                snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
                                         entry->schedDay,
                                  sizeof(entry->schedDay));
                break;
            case COLUMN_SCHEDHOUR:
                snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
                                         entry->schedHour,
                                  sizeof(entry->schedHour));
                break;
            case COLUMN_SCHEDMINUTE:
                snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
                                         entry->schedMinute,
                                  sizeof(entry->schedMinute));
                break;
            case COLUMN_SCHEDCONTEXTNAME:
                snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
                                         entry->schedContextName,
                                  strlen(entry->schedContextName));
                break;
            case COLUMN_SCHEDVARIABLE:
                snmp_set_var_typed_value(request->requestvb, ASN_OBJECT_ID,
                               (u_char *)entry->schedVariable,
                                         entry->schedVariable_len*sizeof(oid));
                break;
            case COLUMN_SCHEDVALUE:
                snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER,
                                           entry->schedValue);
                break;
            case COLUMN_SCHEDTYPE:
                snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER,
                                           entry->schedType);
                break;
            case COLUMN_SCHEDADMINSTATUS:
                ret = (entry->flags & SCHEDULE_FLAG_ENABLED ) ?
                           TV_TRUE : TV_FALSE;
                snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
                break;
            case COLUMN_SCHEDOPERSTATUS:
                ret = (entry->flags & SCHEDULE_FLAG_ENABLED ) ?
                           TV_TRUE : TV_FALSE;
                /*
                 * Check for one-shot entries that have already fired
                 */
                if ((entry->schedType == SCHED_TYPE_ONESHOT) &&
                    (entry->schedLastRun != 0 ))
                    ret = 3;  /* finished(3) */
                snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
                break;
            case COLUMN_SCHEDFAILURES:
                snmp_set_var_typed_integer(request->requestvb, ASN_COUNTER,
                                           entry->schedFailures);
                break;
            case COLUMN_SCHEDLASTFAILURE:
                snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER,
                                           entry->schedLastFailure);
                break;
            case COLUMN_SCHEDLASTFAILED:
                /*
                 * Convert 'schedLastFailed' timestamp
                 *   into DateAndTime string
                 */
                cp = date_n_time( &entry->schedLastFailed, &len );
                snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
                                         cp, len);
                break;
            case COLUMN_SCHEDSTORAGETYPE:
                snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER,
                                           entry->schedStorageType);
                break;
            case COLUMN_SCHEDROWSTATUS:
                ret = (entry->flags & SCHEDULE_FLAG_ACTIVE ) ?
                           TV_TRUE : TV_FALSE;
                snmp_set_var_typed_integer(request->requestvb, ASN_INTEGER, ret);
                break;
            case COLUMN_SCHEDTRIGGERS:
                snmp_set_var_typed_integer(request->requestvb, ASN_COUNTER,
                                           entry->schedTriggers);
                break;
            }
        }
        break;

        /*
         * Write-support
         */
    case MODE_SET_RESERVE1:
        for (request = requests; request; request = request->next) {
            entry = (struct schedTable_entry *)
                    netsnmp_tdata_extract_entry(request);
            tinfo = netsnmp_extract_table_info( request);

            switch (tinfo->colnum) {
            case COLUMN_SCHEDDESCR:
                ret = netsnmp_check_vb_type_and_max_size(
                          request->requestvb, ASN_OCTET_STR, SCHED_STR2_LEN);
                if (ret != SNMP_ERR_NOERROR) {
                    netsnmp_set_request_error(reqinfo, request, ret);
                    return SNMP_ERR_NOERROR;
                }
                break;
            case COLUMN_SCHEDINTERVAL:
                ret = netsnmp_check_vb_uint( request->requestvb );
                if (ret != SNMP_ERR_NOERROR) {
                    netsnmp_set_request_error(reqinfo, request, ret);
                    return SNMP_ERR_NOERROR;
                }
                break;
            case COLUMN_SCHEDWEEKDAY:
                ret = netsnmp_check_vb_type_and_size(
                          request->requestvb, ASN_OCTET_STR, 1);
                /* XXX - check for bit(7) set */
                if (ret != SNMP_ERR_NOERROR) {
                    netsnmp_set_request_error(reqinfo, request, ret);
                    return SNMP_ERR_NOERROR;
                }
                break;
            case COLUMN_SCHEDMONTH:
                ret = netsnmp_check_vb_type_and_size(  /* max_size ?? */
                          request->requestvb, ASN_OCTET_STR, 2);
                /* XXX - check for bit(12)-bit(15) set */
                if (ret != SNMP_ERR_NOERROR) {
                    netsnmp_set_request_error(reqinfo, request, ret);
                    return SNMP_ERR_NOERROR;
                }
                break;
            case COLUMN_SCHEDDAY:
                ret = netsnmp_check_vb_type_and_size(  /* max_size ?? */
                          request->requestvb, ASN_OCTET_STR, 4+4);
                /* XXX - check for bit(62) or bit(63) set */
                if (ret != SNMP_ERR_NOERROR) {
                    netsnmp_set_request_error(reqinfo, request, ret);
                    return SNMP_ERR_NOERROR;
                }
                break;
            case COLUMN_SCHEDHOUR:
                ret = netsnmp_check_vb_type_and_size(  /* max_size ?? */
                          request->requestvb, ASN_OCTET_STR, 3);
                if (ret != SNMP_ERR_NOERROR) {
                    netsnmp_set_request_error(reqinfo, request, ret);
                    return SNMP_ERR_NOERROR;
                }
                break;
            case COLUMN_SCHEDMINUTE:
                ret = netsnmp_check_vb_type_and_size(  /* max_size ?? */
                          request->requestvb, ASN_OCTET_STR, 8);
                /* XXX - check for bit(60)-bit(63) set */
                if (ret != SNMP_ERR_NOERROR) {
                    netsnmp_set_request_error(reqinfo, request, ret);