367 lines
11 KiB
C
367 lines
11 KiB
C
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/*++
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Copyright (c) 1999, Microsoft Corporation
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Module Name:
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sample\mibmanager.c
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Abstract:
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The file contains IP Sample's MIB implementation.
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Revision History:
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MohitT June-15-1999 Created
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--*/
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#include "pchsample.h"
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#pragma hdrstop
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DWORD
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WINAPI
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MM_MibSet (
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IN PIPSAMPLE_MIB_SET_INPUT_DATA pimsid)
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/*++
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Routine Description
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Set IPSAMPLE's global or interface configuration.
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Locks
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Acquires shared (g_ce.pneNetworkEntry)->rwlLock
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Releases (g_ce.pneNetworkEntry)->rwlLock
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Arguments
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pimsid input data, contains global/interface configuration
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Return Value
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NO_ERROR success
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Error Code o/w
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--*/
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{
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DWORD dwErr = NO_ERROR;
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ROUTING_PROTOCOL_EVENTS rpeEvent;
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MESSAGE mMessage = {0, 0, 0};
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PINTERFACE_ENTRY pie;
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if (!ENTER_SAMPLE_API()) { return ERROR_CAN_NOT_COMPLETE; }
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do // breakout loop
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{
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// set global configuration
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if (pimsid->IMSID_TypeID is IPSAMPLE_GLOBAL_CONFIG_ID)
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{
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if (pimsid->IMSID_BufferSize < sizeof(IPSAMPLE_GLOBAL_CONFIG))
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{
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dwErr = ERROR_INVALID_PARAMETER;
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break;
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}
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dwErr = CM_SetGlobalInfo((PVOID) pimsid->IMSID_Buffer);
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if (dwErr != NO_ERROR)
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break;
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rpeEvent = SAVE_GLOBAL_CONFIG_INFO;
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}
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// set interface configuration
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else if (pimsid->IMSID_TypeID is IPSAMPLE_IF_CONFIG_ID)
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{
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if (pimsid->IMSID_BufferSize < sizeof(IPSAMPLE_IF_CONFIG))
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{
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dwErr = ERROR_INVALID_PARAMETER;
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break;
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}
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dwErr = NM_SetInterfaceInfo(pimsid->IMSID_IfIndex,
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(PVOID) pimsid->IMSID_Buffer);
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if (dwErr != NO_ERROR)
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break;
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rpeEvent = SAVE_INTERFACE_CONFIG_INFO;
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mMessage.InterfaceIndex = pimsid->IMSID_IfIndex;
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}
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// error, unexpected type
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else
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{
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dwErr = ERROR_INVALID_PARAMETER;
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break;
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}
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// notify router manager
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if (EnqueueEvent(rpeEvent, mMessage) is NO_ERROR)
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SetEvent(g_ce.hMgrNotificationEvent);
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} while(FALSE);
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LEAVE_SAMPLE_API();
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return dwErr;
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}
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DWORD
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WINAPI
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MM_MibGet (
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IN PIPSAMPLE_MIB_GET_INPUT_DATA pimgid,
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OUT PIPSAMPLE_MIB_GET_OUTPUT_DATA pimgod,
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IN OUT PULONG pulOutputSize,
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IN MODE mMode)
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/*++
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Routine Description
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Handles the structure accesses required to read MIB data. Supports
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three modes of querying: EXACT, FIRST, and NEXT, which correspond to
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MibGet(), MibGetFirst(), and MibGetNext() respectively.
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Locks
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Acquires shared (g_ce.pneNetworkEntry)->rwlLock
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Releases (g_ce.pneNetworkEntry)->rwlLock
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Arguments
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pimgid input data
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pimgod output buffer
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pulOutputSize IN size of output buffer given
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OUT size of output buffer needed
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mMode query type
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Return Value
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NO_ERROR success
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Error Code o/w
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--*/
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{
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DWORD dwErr = NO_ERROR;
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ULONG ulSizeGiven = 0;
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ULONG ulSizeNeeded = 0;
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PINTERFACE_ENTRY pie;
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if (!ENTER_SAMPLE_API()) { return ERROR_CAN_NOT_COMPLETE; }
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// compute the size of the buffer available for storing
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// returned structures (the size of IMGOD_Buffer)
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if (*pulOutputSize < sizeof(IPSAMPLE_MIB_GET_OUTPUT_DATA))
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ulSizeGiven = 0;
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else
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ulSizeGiven = *pulOutputSize - sizeof(IPSAMPLE_MIB_GET_OUTPUT_DATA);
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switch (pimgid->IMGID_TypeID)
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{
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// the global statistics struct is fixed-length.
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// there is a single instance.
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case IPSAMPLE_GLOBAL_STATS_ID:
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{
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PIPSAMPLE_GLOBAL_STATS pigsdst, pigssrc;
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// only GET_EXACT and GET_FIRST are valid for the
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// global stats object since there is only one entry
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if (mMode is GET_NEXT)
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{
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dwErr = ERROR_NO_MORE_ITEMS;
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break;
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}
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// set the output size required for this entry
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ulSizeNeeded = sizeof(IPSAMPLE_GLOBAL_STATS);
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// check that the output buffer is big enough
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if (ulSizeGiven < ulSizeNeeded)
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{
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dwErr = ERROR_INSUFFICIENT_BUFFER;
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break;
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}
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pimgod->IMGOD_TypeID = IPSAMPLE_GLOBAL_STATS_ID;
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// since access to this structure is synchronized through
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// locked increments/decrements, we must copy it field by field
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pigssrc = &(g_ce.igsStats);
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pigsdst = (PIPSAMPLE_GLOBAL_STATS) pimgod->IMGOD_Buffer;
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pigsdst->ulNumInterfaces = pigssrc->ulNumInterfaces;
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break;
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}
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// the global configuration structure may be of variable size.
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// there is a single instance.
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case IPSAMPLE_GLOBAL_CONFIG_ID:
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{
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// only GET_EXACT and GET_FIRST are valid for the
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// global configuration object since there is only one entry
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if (mMode is GET_NEXT)
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{
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dwErr = ERROR_NO_MORE_ITEMS;
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break;
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}
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// CM_GetGlobalInfo() decides whether the buffer size is
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// sufficient. if so, it retrieves the global configuration.
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// either case it sets the required output buffer size.
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dwErr = CM_GetGlobalInfo ((PVOID) pimgod->IMGOD_Buffer,
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&ulSizeGiven,
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NULL,
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NULL,
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NULL);
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ulSizeNeeded = ulSizeGiven;
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// check that the output buffer was big enough
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if (dwErr != NO_ERROR)
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break;
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pimgod->IMGOD_TypeID = IPSAMPLE_GLOBAL_CONFIG_ID;
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break;
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}
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// the interface statistics struct is fixed-length.
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// there may be multiple instances.
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case IPSAMPLE_IF_STATS_ID:
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{
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PIPSAMPLE_IF_STATS piisdst, piissrc;
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ACQUIRE_READ_LOCK(&(g_ce.pneNetworkEntry)->rwlLock);
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do // breakout loop
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{
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// retrieve the interface whose stats are to be read
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dwErr = IE_GetIndex(pimgid->IMGID_IfIndex,
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mMode,
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&pie);
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if (dwErr != NO_ERROR)
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break;
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// set the output size required for this entry
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ulSizeNeeded = sizeof(IPSAMPLE_IF_STATS);
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// check that the output buffer is big enough
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if (ulSizeGiven < ulSizeNeeded)
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{
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dwErr = ERROR_INSUFFICIENT_BUFFER;
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break;
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}
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pimgod->IMGOD_TypeID = IPSAMPLE_IF_STATS_ID;
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pimgod->IMGOD_IfIndex = pie->dwIfIndex;
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// access to this structure is synchronized through locked
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// increments/decrements, so we copy it field by field
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piissrc = &(pie->iisStats);
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piisdst = (PIPSAMPLE_IF_STATS) pimgod->IMGOD_Buffer;
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piisdst->ulNumPackets = piissrc->ulNumPackets;
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} while (FALSE);
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RELEASE_READ_LOCK(&(g_ce.pneNetworkEntry)->rwlLock);
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break;
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}
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// the interface configuration structure may be of variable size.
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// there may be multiple instances.
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case IPSAMPLE_IF_CONFIG_ID:
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{
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// get the queried interface's index
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ACQUIRE_READ_LOCK(&(g_ce.pneNetworkEntry)->rwlLock);
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do // breakout loop
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{
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dwErr = IE_GetIndex(pimgid->IMGID_IfIndex,
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mMode,
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&pie);
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if (dwErr != NO_ERROR)
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break;
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// read lock acuired again, which is fine :)
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dwErr = NM_GetInterfaceInfo(pie->dwIfIndex,
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(PVOID) pimgod->IMGOD_Buffer,
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&ulSizeGiven,
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NULL,
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NULL,
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NULL);
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ulSizeNeeded = ulSizeGiven;
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// check that the output buffer was big enough
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if (dwErr != NO_ERROR)
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break;
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pimgod->IMGOD_TypeID = IPSAMPLE_IF_CONFIG_ID;
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pimgod->IMGOD_IfIndex = pie->dwIfIndex;
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} while (FALSE);
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RELEASE_READ_LOCK(&(g_ce.pneNetworkEntry)->rwlLock);
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break;
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}
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// the interface binding structure is of variable size.
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// there may be multiple instances.
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case IPSAMPLE_IF_BINDING_ID:
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{
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PIPSAMPLE_IF_BINDING piib;
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PIPSAMPLE_IP_ADDRESS piia;
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ACQUIRE_READ_LOCK(&(g_ce.pneNetworkEntry)->rwlLock);
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do // breakout loop
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{
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// retrieve the interface whose stats are to be read
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dwErr = IE_GetIndex(pimgid->IMGID_IfIndex,
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mMode,
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&pie);
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if (dwErr != NO_ERROR)
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break;
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// set the output size required for this entry
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ulSizeNeeded = sizeof(IPSAMPLE_IF_BINDING) +
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pie->ulNumBindings * sizeof(IPSAMPLE_IP_ADDRESS);
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// check that the output buffer is big enough
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if (ulSizeGiven < ulSizeNeeded)
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{
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dwErr = ERROR_INSUFFICIENT_BUFFER;
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break;
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}
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pimgod->IMGOD_TypeID = IPSAMPLE_IF_BINDING_ID;
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pimgod->IMGOD_IfIndex = pie->dwIfIndex;
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piib = (PIPSAMPLE_IF_BINDING) pimgod->IMGOD_Buffer;
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piia = IPSAMPLE_IF_ADDRESS_TABLE(piib);
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if (INTERFACE_IS_ACTIVE(pie))
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piib->dwState |= IPSAMPLE_STATE_ACTIVE;
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if (INTERFACE_IS_BOUND(pie))
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piib->dwState |= IPSAMPLE_STATE_BOUND;
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piib->ulCount = pie->ulNumBindings;
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CopyMemory((PVOID) piia, // address,mask pairs
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(PVOID) pie->pbeBindingTable, // ditto
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pie->ulNumBindings * sizeof(IPSAMPLE_IP_ADDRESS));
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} while (FALSE);
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RELEASE_READ_LOCK(&(g_ce.pneNetworkEntry)->rwlLock);
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break;
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}
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default:
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{
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dwErr = ERROR_INVALID_PARAMETER;
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break;
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}
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}
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*pulOutputSize = sizeof(IPSAMPLE_MIB_GET_OUTPUT_DATA) + ulSizeNeeded;
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LEAVE_SAMPLE_API();
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return dwErr;
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}
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