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502 lines
14 KiB
502 lines
14 KiB
/*++
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Copyright (c) 1992-1996 Microsoft Corporation
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Module Name:
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srvc_tbl.c
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Abstract:
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All routines to support operations on the LM MIB Service Table.
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Environment:
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User Mode - Win32
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Revision History:
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10-May-1996 DonRyan
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Removed banner from Technology Dynamics, Inc.
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--*/
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//--------------------------- WINDOWS DEPENDENCIES --------------------------
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//--------------------------- STANDARD DEPENDENCIES -- #include<xxxxx.h> ----
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#include <stdio.h>
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#include <memory.h>
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//--------------------------- MODULE DEPENDENCIES -- #include"xxxxx.h" ------
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#include <snmp.h>
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#include <snmputil.h>
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#include "mibfuncs.h"
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//--------------------------- SELF-DEPENDENCY -- ONE #include"module.h" -----
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#include "srvc_tbl.h"
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//--------------------------- PUBLIC VARIABLES --(same as in module.h file)--
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// Prefix to the Service table
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static UINT srvcSubids[] = { 2, 3, 1 };
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static AsnObjectIdentifier MIB_SrvcPrefix = { 3, srvcSubids };
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SRVC_TABLE MIB_SrvcTable = { 0, NULL };
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//--------------------------- PRIVATE CONSTANTS -----------------------------
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#define SRVC_FIELD_SUBID (MIB_SrvcPrefix.idLength+MIB_OidPrefix.idLength)
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#define SRVC_FIRST_FIELD SRVC_NAME_FIELD
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#define SRVC_LAST_FIELD SRVC_PAUSED_FIELD
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//--------------------------- PRIVATE STRUCTS -------------------------------
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//--------------------------- PRIVATE VARIABLES -----------------------------
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//--------------------------- PRIVATE PROTOTYPES ----------------------------
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UINT MIB_srvcs_get(
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IN OUT RFC1157VarBind *VarBind
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);
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int MIB_srvcs_match(
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IN AsnObjectIdentifier *Oid,
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OUT UINT *Pos
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);
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UINT MIB_srvcs_copyfromtable(
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IN UINT Entry,
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IN UINT Field,
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OUT RFC1157VarBind *VarBind
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);
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//--------------------------- PRIVATE PROCEDURES ----------------------------
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//--------------------------- PUBLIC PROCEDURES -----------------------------
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//
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// MIB_srvcs_func
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// High level routine for handling operations on the Service table
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//
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// Notes:
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//
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// Return Codes:
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// None.
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//
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// Error Codes:
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// None.
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//
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UINT MIB_srvcs_func(
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IN UINT Action,
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IN MIB_ENTRY *MibPtr,
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IN OUT RFC1157VarBind *VarBind
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)
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{
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int Found;
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UINT Entry;
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UINT Field;
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UINT ErrStat;
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switch ( Action )
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{
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case MIB_ACTION_GETFIRST:
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// Fill the Service table with the info from server
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if ( SNMPAPI_ERROR == MIB_srvcs_lmget() )
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{
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ErrStat = SNMP_ERRORSTATUS_GENERR;
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goto Exit;
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}
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// If no elements in table, then return next MIB var, if one
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if ( MIB_SrvcTable.Len == 0 )
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{
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if ( MibPtr->MibNext == NULL )
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{
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ErrStat = SNMP_ERRORSTATUS_NOSUCHNAME;
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goto Exit;
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}
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// Do get first on the next MIB var
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ErrStat = (*MibPtr->MibNext->MibFunc)( Action, MibPtr->MibNext,
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VarBind );
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break;
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}
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//
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// Place correct OID in VarBind
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// Assuming the first field in the first record is the "start"
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{
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UINT temp_subs[] = { SRVC_FIRST_FIELD };
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AsnObjectIdentifier FieldOid = { 1, temp_subs };
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AsnObjectIdentifier tmpOid;
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tmpOid = VarBind->name; // keep a copy (structure copy)
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if (! SnmpUtilOidCpy( &VarBind->name, &MIB_OidPrefix ))
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{
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VarBind->name = tmpOid; // restore
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ErrStat = SNMP_ERRORSTATUS_RESOURCEUNAVAILABLE;
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goto Exit;
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}
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if (! SnmpUtilOidAppend( &VarBind->name, &MIB_SrvcPrefix ))
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{
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SnmpUtilOidFree(&VarBind->name);
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VarBind->name = tmpOid; // restore
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ErrStat = SNMP_ERRORSTATUS_RESOURCEUNAVAILABLE;
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goto Exit;
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}
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if (! SnmpUtilOidAppend( &VarBind->name, &FieldOid ))
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{
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SnmpUtilOidFree(&VarBind->name);
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VarBind->name = tmpOid; // restore
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ErrStat = SNMP_ERRORSTATUS_RESOURCEUNAVAILABLE;
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goto Exit;
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}
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if (! SnmpUtilOidAppend( &VarBind->name, &MIB_SrvcTable.Table[0].Oid ))
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{
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SnmpUtilOidFree(&VarBind->name);
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VarBind->name = tmpOid; // restore
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ErrStat = SNMP_ERRORSTATUS_RESOURCEUNAVAILABLE;
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goto Exit;
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}
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// free the original VarBind->name
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SnmpUtilOidFree(&tmpOid);
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}
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//
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// Let fall through on purpose
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//
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case MIB_ACTION_GET:
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ErrStat = MIB_srvcs_get( VarBind );
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break;
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case MIB_ACTION_GETNEXT:
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// Fill the Service Table with the info from server
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if ( SNMPAPI_ERROR == MIB_srvcs_lmget() )
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{
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ErrStat = SNMP_ERRORSTATUS_GENERR;
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goto Exit;
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}
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// Determine which field
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Field = VarBind->name.ids[SRVC_FIELD_SUBID];
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// Lookup OID in table
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if (Field < SRVC_FIRST_FIELD)
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{
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Entry = 0; // will take the first entry into the table
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Field = SRVC_FIRST_FIELD; // and the first column of the table
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Found = MIB_TBL_POS_BEFORE;
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}
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else if (Field > SRVC_LAST_FIELD)
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Found = MIB_TBL_POS_END;
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else
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Found = MIB_srvcs_match( &VarBind->name, &Entry );
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// Index not found, but could be more fields to base GET on
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if ((Found == MIB_TBL_POS_BEFORE && MIB_SrvcTable.Len == 0) ||
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Found == MIB_TBL_POS_END )
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{
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// Index not found in table, get next from field
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// Field ++;
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// Make sure not past last field
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// if ( Field > SRVC_LAST_FIELD )
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// {
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// Get next VAR in MIB
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ErrStat = (*MibPtr->MibNext->MibFunc)( MIB_ACTION_GETFIRST,
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MibPtr->MibNext,
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VarBind );
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break;
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// }
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}
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// Get next TABLE entry
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if ( Found == MIB_TBL_POS_FOUND )
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{
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Entry ++;
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if ( Entry > MIB_SrvcTable.Len-1 )
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{
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Entry = 0;
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Field ++;
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if ( Field > SRVC_LAST_FIELD )
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{
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// Get next VAR in MIB
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ErrStat = (*MibPtr->MibNext->MibFunc)( MIB_ACTION_GETFIRST,
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MibPtr->MibNext,
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VarBind );
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break;
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}
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}
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}
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//
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// Place correct OID in VarBind
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// Assuming the first field in the first record is the "start"
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{
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UINT temp_subs[1];
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AsnObjectIdentifier FieldOid;
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AsnObjectIdentifier tmpOid;
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temp_subs[0] = Field;
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FieldOid.idLength = 1;
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FieldOid.ids = temp_subs;
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tmpOid = VarBind->name; // keep a copy (structure copy)
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if (! SnmpUtilOidCpy( &VarBind->name, &MIB_OidPrefix ))
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{
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VarBind->name = tmpOid; // restore
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ErrStat = SNMP_ERRORSTATUS_RESOURCEUNAVAILABLE;
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goto Exit;
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}
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if (! SnmpUtilOidAppend( &VarBind->name, &MIB_SrvcPrefix ))
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{
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SnmpUtilOidFree(&VarBind->name);
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VarBind->name = tmpOid; // restore
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ErrStat = SNMP_ERRORSTATUS_RESOURCEUNAVAILABLE;
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goto Exit;
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}
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if (! SnmpUtilOidAppend( &VarBind->name, &FieldOid ))
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{
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SnmpUtilOidFree(&VarBind->name);
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VarBind->name = tmpOid; // restore
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ErrStat = SNMP_ERRORSTATUS_RESOURCEUNAVAILABLE;
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goto Exit;
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}
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if (! SnmpUtilOidAppend( &VarBind->name, &MIB_SrvcTable.Table[Entry].Oid ))
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{
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SnmpUtilOidFree(&VarBind->name);
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VarBind->name = tmpOid; // restore
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ErrStat = SNMP_ERRORSTATUS_RESOURCEUNAVAILABLE;
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goto Exit;
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}
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// free the original VarBind->name
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SnmpUtilOidFree(&tmpOid);
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}
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ErrStat = MIB_srvcs_copyfromtable( Entry, Field, VarBind );
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break;
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case MIB_ACTION_SET:
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ErrStat = SNMP_ERRORSTATUS_NOSUCHNAME;
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break;
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default:
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ErrStat = SNMP_ERRORSTATUS_GENERR;
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}
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Exit:
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return ErrStat;
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} // MIB_srvcs_func
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//
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// MIB_srvcs_get
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// Retrieve Service Table information.
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//
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// Notes:
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//
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// Return Codes:
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// None.
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//
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// Error Codes:
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// None.
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//
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UINT MIB_srvcs_get(
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IN OUT RFC1157VarBind *VarBind
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)
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{
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UINT Entry;
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int Found;
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UINT ErrStat;
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if (VarBind->name.ids[SRVC_FIELD_SUBID] < SRVC_FIRST_FIELD ||
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VarBind->name.ids[SRVC_FIELD_SUBID] > SRVC_LAST_FIELD)
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{
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ErrStat = SNMP_ERRORSTATUS_NOSUCHNAME;
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goto Exit;
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}
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// Fill the Service Table with the info from server
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if ( SNMPAPI_ERROR == MIB_srvcs_lmget() )
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{
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ErrStat = SNMP_ERRORSTATUS_GENERR;
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goto Exit;
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}
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Found = MIB_srvcs_match( &VarBind->name, &Entry );
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// Look for a complete OID match
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if ( Found != MIB_TBL_POS_FOUND )
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{
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ErrStat = SNMP_ERRORSTATUS_NOSUCHNAME;
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goto Exit;
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}
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// Copy data from table
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ErrStat = MIB_srvcs_copyfromtable( Entry, VarBind->name.ids[SRVC_FIELD_SUBID],
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VarBind );
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Exit:
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return ErrStat;
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} // MIB_srvcs_get
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//
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// MIB_srvcs_match
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// Match the target OID with a location in the Service Table
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//
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// Notes:
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//
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// Return Codes:
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// None.
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//
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// Error Codes:
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// None
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//
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int MIB_srvcs_match(
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IN AsnObjectIdentifier *Oid,
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OUT UINT *Pos
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)
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{
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AsnObjectIdentifier TempOid;
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int nResult;
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// Remove prefix including field reference
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TempOid.idLength = Oid->idLength - MIB_OidPrefix.idLength -
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MIB_SrvcPrefix.idLength - 1;
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TempOid.ids = &Oid->ids[MIB_OidPrefix.idLength+MIB_SrvcPrefix.idLength+1];
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*Pos = 0;
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while ( *Pos < MIB_SrvcTable.Len )
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{
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nResult = SnmpUtilOidCmp( &TempOid, &MIB_SrvcTable.Table[*Pos].Oid );
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if ( !nResult )
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{
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nResult = MIB_TBL_POS_FOUND;
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goto Exit;
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}
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if ( nResult < 0 )
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{
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nResult = MIB_TBL_POS_BEFORE;
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goto Exit;
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}
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(*Pos)++;
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}
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nResult = MIB_TBL_POS_END;
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Exit:
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return nResult;
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}
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//
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// MIB_srvcs_copyfromtable
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// Copy requested data from table structure into Var Bind.
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//
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// Notes:
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//
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// Return Codes:
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// None.
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//
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// Error Codes:
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// None.
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//
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UINT MIB_srvcs_copyfromtable(
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IN UINT Entry,
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IN UINT Field,
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OUT RFC1157VarBind *VarBind
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)
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{
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UINT ErrStat;
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// Get the requested field and save in var bind
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switch( Field )
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{
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case SRVC_NAME_FIELD:
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// Alloc space for string
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VarBind->value.asnValue.string.stream = SnmpUtilMemAlloc( sizeof(char)
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* MIB_SrvcTable.Table[Entry].svSvcName.length );
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if ( VarBind->value.asnValue.string.stream == NULL )
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{
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ErrStat = SNMP_ERRORSTATUS_GENERR;
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goto Exit;
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}
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// Copy string into return position
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memcpy( VarBind->value.asnValue.string.stream,
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MIB_SrvcTable.Table[Entry].svSvcName.stream,
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MIB_SrvcTable.Table[Entry].svSvcName.length );
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// Set string length
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VarBind->value.asnValue.string.length =
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MIB_SrvcTable.Table[Entry].svSvcName.length;
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VarBind->value.asnValue.string.dynamic = TRUE;
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// Set type of var bind
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VarBind->value.asnType = ASN_RFC1213_DISPSTRING;
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break;
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case SRVC_INSTALLED_FIELD:
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// Set value of var bind
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VarBind->value.asnValue.number =
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MIB_SrvcTable.Table[Entry].svSvcInstalledState;
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VarBind->value.asnType = ASN_INTEGER;
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break;
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case SRVC_OPERATING_FIELD:
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// Set value of var bind
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VarBind->value.asnValue.number =
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MIB_SrvcTable.Table[Entry].svSvcOperatingState;
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VarBind->value.asnType = ASN_INTEGER;
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break;
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case SRVC_UNINSTALLED_FIELD:
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// Set value of var bind
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VarBind->value.asnValue.number =
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MIB_SrvcTable.Table[Entry].svSvcCanBeUninstalled;
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VarBind->value.asnType = ASN_INTEGER;
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break;
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case SRVC_PAUSED_FIELD:
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// Set value of var bind
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VarBind->value.asnValue.number =
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MIB_SrvcTable.Table[Entry].svSvcCanBePaused;
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VarBind->value.asnType = ASN_INTEGER;
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break;
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default:
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SNMPDBG(( SNMP_LOG_TRACE, "LMMIB2: Internal Error Services Table\n" ));
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ErrStat = SNMP_ERRORSTATUS_GENERR;
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goto Exit;
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}
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ErrStat = SNMP_ERRORSTATUS_NOERROR;
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Exit:
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return ErrStat;
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} // MIB_srvcs_copyfromtable
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//-------------------------------- END --------------------------------------
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