422 lines
17 KiB
C++
422 lines
17 KiB
C++
/******************************************************************
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SNetScal.cpp -- WBEM provider class implementation
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MODULE:
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DhcpProv.dll
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DESCRIPTION:
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Contains: the definition of the DHCP_Subnet class,
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the static table of manageable objects.
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REVISION:
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08/03/98 - created
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******************************************************************/
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#include <stdafx.h>
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#include "SNetFn.h" // needed for the declarations of all the functions.
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#include "SNetScal.h" // own header
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// static table of CDHCP_Property objects containing the DHCP Server
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// scalar parameters (properties) which are WBEM manageable. Each object associates
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// the name of the property with their SET and GET functions.
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// *** NOTE ***
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// The name of each property has to be in sync with the ones specified in the DhcpSchema.mof.
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// The indices specified in SrvScal.h should also be in sync with the actual row from this table (they are used
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// in the property's action functions.
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static const CDHCP_Property DHCP_Subnet_Property[]=
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{
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CDHCP_Property(L"Address", fnSNetGetAddress, NULL),
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CDHCP_Property(L"Mask", fnSNetGetMask, NULL),
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CDHCP_Property(L"Name", fnSNetGetName, fnSNetSetName),
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CDHCP_Property(L"Comment", fnSNetGetComment, fnSNetSetComment),
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CDHCP_Property(L"State", fnSNetGetState, fnSNetSetState),
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CDHCP_Property(L"NumberOfAddressesInUse", fnSNetGetNumberOfAddressesInUse, NULL),
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CDHCP_Property(L"NumberOfAddressesFree", fnSNetGetNumberOfAddressesFree, NULL),
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CDHCP_Property(L"NumberOfPendingOffers", fnSNetGetNumberOfPendingOffers, NULL)
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};
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// the name of the WBEM class
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#define PROVIDER_NAME_DHCP_SUBNET "DHCP_Subnet"
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// main class instantiation.
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CDHCP_Subnet MyDHCP_Subnet_Scalars (PROVIDER_NAME_DHCP_SUBNET, PROVIDER_NAMESPACE_DHCP) ;
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/*****************************************************************************
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*
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* FUNCTION : CDHCP_Subnet::CDHCP_Subnet
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*
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* DESCRIPTION : Constructor
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*
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* INPUTS : none
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*
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* RETURNS : nothing
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*
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* COMMENTS : Calls the Provider constructor.
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*
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*****************************************************************************/
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CDHCP_Subnet::CDHCP_Subnet (const CHString& strName, LPCSTR pszNameSpace ) :
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Provider(strName, pszNameSpace)
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{
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}
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/*****************************************************************************
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*
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* FUNCTION : CDHCP_Subnet::~CDHCP_Subnet
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*
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* DESCRIPTION : Destructor
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*
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* INPUTS : none
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*
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* RETURNS : nothing
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*
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* COMMENTS :
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*
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*****************************************************************************/
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CDHCP_Subnet::~CDHCP_Subnet ()
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{
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}
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/*****************************************************************************
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*
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* FUNCTION : CDHCP_Subnet::EnumerateInstances
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*
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* DESCRIPTION : Returns all the instances of this class.
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*
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* INPUTS : none
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*
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* RETURNS : WBEM_S_NO_ERROR if successful
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*
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* COMMENTS : Enumerates all this instances of this class. As there is only one
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* DHCP Server per system, there is only one instance for this class
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*
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*****************************************************************************/
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HRESULT CDHCP_Subnet::EnumerateInstances ( MethodContext* pMethodContext, long lFlags )
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{
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CInstance* pInstance;
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CDHCP_Subnet_Parameters subnetParams(0); // don't know here the IP address
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LPDHCP_MIB_INFO pMibInfo;
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LPSCOPE_MIB_INFO pScopeMibInfo;
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HRESULT hRes = WBEM_E_FAILED;
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if (subnetParams.GetMibInfo(pMibInfo, pScopeMibInfo, TRUE) && pMibInfo != NULL)
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{
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hRes = WBEM_S_NO_ERROR;
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for (int i=0; hRes == WBEM_S_NO_ERROR && i < pMibInfo->Scopes; i++)
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{
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LPSCOPE_MIB_INFO pScope = &(pMibInfo->ScopeInfo[i]); // this is the info from the server,
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CInstance* pInstance = CreateNewInstance(pMethodContext); // create now the instance
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if (pScope != NULL &&
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pInstance != NULL)
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{
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WCHAR szSubnetAddr[16]; // should be enough for holding 'xxx.yyy.zzz.uuu\0'
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// don't want to link to ws2_32.lib just for using inet_ntoa only
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swprintf(szSubnetAddr, L"%u.%u.%u.%u",(pScope->Subnet & 0xff000000) >> 24,
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(pScope->Subnet & 0x00ff0000) >> 16,
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(pScope->Subnet & 0x0000ff00) >> 8,
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(pScope->Subnet & 0x000000ff));
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if (pInstance->SetCHString(DHCP_Subnet_Property[IDX_SNET_Address].m_wsPropName, szSubnetAddr) &&
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LoadInstanceProperties(pInstance))
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{
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hRes = Commit(pInstance);
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// now everything relys on the err returned above.
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continue;
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}
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}
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// at this point something should have definitively gone wrong
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hRes = WBEM_E_FAILED;
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}
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}
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return hRes ;
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}
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/*****************************************************************************
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*
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* FUNCTION : CDHCP_Subnet::GetObject
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*
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* DESCRIPTION : Find a single instance based on the key properties for the
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* class.
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*
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* INPUTS : A pointer to a CInstance object containing the key properties.
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*
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* RETURNS : WBEM_S_NO_ERROR if the instance can be found
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* WBEM_E_NOT_FOUND if the instance described by the key properties
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* could not be found
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* WBEM_E_FAILED if the instance could be found but another error
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* occurred.
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*
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* COMMENTS :
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*
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*****************************************************************************/
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HRESULT CDHCP_Subnet::GetObject ( CInstance* pInstance, long lFlags )
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{
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return LoadInstanceProperties(pInstance)? WBEM_S_NO_ERROR : WBEM_E_NOT_FOUND;
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}
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/*****************************************************************************
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*
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* FUNCTION : CDHCP_Subnet::ExecQuery
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*
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* DESCRIPTION : You are passed a method context to use in the creation of
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* instances that satisfy the query, and a CFrameworkQuery
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* which describes the query. Create and populate all
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* instances which satisfy the query. CIMOM will post -
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* filter the query for you, you may return more instances
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* or more properties than are requested and CIMOM
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* will filter out any that do not apply.
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*
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*
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* INPUTS :
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*
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* RETURNS : WBEM_E_PROVIDER_NOT_CAPABLE if not supported for this class
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* WBEM_E_FAILED if the query failed
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* WBEM_S_NO_ERROR if query was successful
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*
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* COMMENTS : TO DO: Most providers will not need to implement this method. If you don't, cimom
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* will call your enumerate function to get all the instances and perform the
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* filtering for you. Unless you expect SIGNIFICANT savings from implementing
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* queries, you should remove this entire method.
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*
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*****************************************************************************/
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HRESULT CDHCP_Subnet::ExecQuery (MethodContext *pMethodContext, CFrameworkQuery& Query, long lFlags)
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{
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return (WBEM_E_PROVIDER_NOT_CAPABLE);
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}
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/*****************************************************************************
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*
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* FUNCTION : CDHCP_Subnet::PutInstance
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*
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* DESCRIPTION : PutInstance should be used in provider classes that can write
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* instance information back to the hardware or software.
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* For example: Win32_Environment will allow a PutInstance of a new
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* environment variable, because environment variables are "software"
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* related. However, a class like Win32_MotherboardDevice will not
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* allow editing of the bus speed. Since by default PutInstance
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* returns WBEM_E_PROVIDER_NOT_CAPABLE, this function is placed here as a
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* skeleton, but can be removed if not used.
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*
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* INPUTS :
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*
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* RETURNS : WBEM_E_PROVIDER_NOT_CAPABLE if PutInstance is not available
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* WBEM_E_FAILED if there is an error delivering the instance
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* WBEM_E_INVALID_PARAMETER if any of the instance properties
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* are incorrect.
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* WBEM_S_NO_ERROR if instance is properly delivered
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*
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* COMMENTS : TO DO: If you don't intend to support writing to your provider, remove this method.
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*
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*****************************************************************************/
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HRESULT CDHCP_Subnet::PutInstance ( const CInstance &Instance, long lFlags)
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{
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int i;
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DWORD returnCode;
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CHString strName, strMask;
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DHCP_IP_ADDRESS dwAddress, dwMask;
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LPDHCP_SUBNET_INFO pSubnetInfo;
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BOOL newInstance;
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if (!Instance.GetCHString(DHCP_Subnet_Property[IDX_SNET_Address].m_wsPropName, strName) ||
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!Instance.GetCHString(DHCP_Subnet_Property[IDX_SNET_Mask].m_wsPropName, strMask) ||
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!inet_wstodw(strName, dwAddress) ||
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!inet_wstodw(strMask, dwMask))
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return FALSE;
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// the object below is used as a "repository" for all the properties' values.
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// once it is filled up with data, it is commited explicitely to the DHCP Server.
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CDHCP_Subnet_Parameters SubnetParameters(dwAddress, dwMask);
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// first get the subnet information, just to get the info that doesn't change
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// if fails => a new instance has to be created
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newInstance = !SubnetParameters.GetSubnetInfo(pSubnetInfo,TRUE);
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for (i = 0; i < NUM_SUBNET_PROPERTIES; i++)
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{
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if (DHCP_Subnet_Property[i].m_pfnActionSet != NULL)
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{
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// execute the SET property action function
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// because of the last NULL, no data is written to DHCP Server at this moment,
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// only SubnetParameters object is filled up with the values taken from the Instance.
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// don't care much here about the error codes. Failure means some properties will
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// not be written. At least we are giving a chance to all the writable properties.
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(*(DHCP_Subnet_Property[i].m_pfnActionSet))(&SubnetParameters, (CInstance *)&Instance, NULL);
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}
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}
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if (newInstance)
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return SubnetParameters.CommitNew(returnCode) ? WBEM_S_NO_ERROR : WBEM_E_FAILED;
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else
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// commit the values of all the writable properties to DHCP Server
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return SubnetParameters.CommitSet(returnCode) ? WBEM_S_NO_ERROR : WBEM_E_FAILED;
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}
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/*****************************************************************************
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*
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* FUNCTION : CDHCP_Subnet::DeleteInstance
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*
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* DESCRIPTION : DeleteInstance, like PutInstance, actually writes information
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* to the software or hardware. For most hardware devices,
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* DeleteInstance should not be implemented, but for software
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* configuration, DeleteInstance implementation is plausible.
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* Like PutInstance, DeleteInstance returns WBEM_E_PROVIDER_NOT_CAPABLE from
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* inside Provider::DeleteInstance (defined in Provider.h). So, if
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* you choose not to implement DeleteInstance, remove this function
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* definition and the declaration from DHCP_Server_Scalars.h
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*
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* INPUTS :
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*
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* RETURNS : WBEM_E_PROVIDER_NOT_CAPABLE if DeleteInstance is not available.
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* WBEM_E_FAILED if there is an error deleting the instance.
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* WBEM_E_INVALID_PARAMETER if any of the instance properties
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* are incorrect.
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* WBEM_S_NO_ERROR if instance is properly deleted.
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*
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* COMMENTS : TO DO: If you don't intend to support deleting instances, remove this method.
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*
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*****************************************************************************/
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HRESULT CDHCP_Subnet::DeleteInstance ( const CInstance &Instance, long lFlags )
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{
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DWORD returnCode;
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CHString str;
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DHCP_IP_ADDRESS dwAddress;
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if (!Instance.GetCHString(DHCP_Subnet_Property[IDX_SNET_Address].m_wsPropName, str) ||
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!inet_wstodw(str, dwAddress))
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return (WBEM_E_FAILED);
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// the object below is used as a "repository" for all the properties' values.
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// once it is filled up with data, it is commited explicitely to the DHCP Server.
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CDHCP_Subnet_Parameters SubnetParameters(dwAddress);
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return SubnetParameters.DeleteSubnet() ? WBEM_S_NO_ERROR : WBEM_E_FAILED;
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}
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/*****************************************************************************
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*
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* FUNCTION : CDHCP_Subnet::ExecMethod
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*
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* DESCRIPTION : Override this function to provide support for methods.
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* A method is an entry point for the user of your provider
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* to request your class perform some function above and
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* beyond a change of state. (A change of state should be
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* handled by PutInstance() )
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*
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* INPUTS : A pointer to a CInstance containing the instance the method was executed against.
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* A string containing the method name
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* A pointer to the CInstance which contains the IN parameters.
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* A pointer to the CInstance to contain the OUT parameters.
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* A set of specialized method flags
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*
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* RETURNS : WBEM_E_PROVIDER_NOT_CAPABLE if not implemented for this class
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* WBEM_S_NO_ERROR if method executes successfully
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* WBEM_E_FAILED if error occurs executing method
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*
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* COMMENTS : TO DO: If you don't intend to support Methods, remove this method.
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*
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*****************************************************************************/
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HRESULT CDHCP_Subnet::ExecMethod ( const CInstance& Instance,
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const BSTR bstrMethodName,
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CInstance *pInParams,
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CInstance *pOutParams,
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long lFlags)
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{
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int i;
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DWORD returnCode;
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CHString str;
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DHCP_IP_ADDRESS dwAddress;
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LPDHCP_SUBNET_INFO pSubnetInfo;
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int nSetPrefixLen = wcslen(_SNET_SET_PREFIX);
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if (!Instance.GetCHString(DHCP_Subnet_Property[IDX_SNET_Address].m_wsPropName, str) ||
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!inet_wstodw(str, dwAddress))
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return FALSE;
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// build the object identifying the subnet against which the method is executed
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CDHCP_Subnet_Parameters SubnetParameters(dwAddress);
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// get the subnet information, just to preserve the info that doesn't change
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if (!SubnetParameters.GetSubnetInfo(pSubnetInfo,TRUE))
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return WBEM_E_FAILED;
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// is it a "SET" operation?
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if (!_wcsnicmp (bstrMethodName, _SNET_SET_PREFIX, nSetPrefixLen))
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{
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int i;
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WCHAR *wcsPropertyName = bstrMethodName + nSetPrefixLen; // pointer to the property name
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// scan the DHCP_Subnet_Property table looking for the property's row
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for (i = 0; i < NUM_SUBNET_PROPERTIES; i++)
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{
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// if the property row is found
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if (!_wcsicmp(wcsPropertyName, DHCP_Subnet_Property[i].m_wsPropName))
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{
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// see if the property is writable
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if (DHCP_Subnet_Property[i].m_pfnActionSet != NULL)
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{
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// execute the SET property action function
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// because of the pOutParams, the method will be commited inside the call
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if ((*(DHCP_Subnet_Property[i].m_pfnActionSet))(&SubnetParameters, pInParams, pOutParams))
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// everything worked fine.
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return WBEM_S_NO_ERROR;
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else
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// an error occured during "SET"
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return WBEM_E_FAILED;
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}
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else
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// no, the property cannot be written. (shouldn't really happen, as the methods from the
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// repository should match the writable properties only)
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return WBEM_E_READ_ONLY;
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}
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}
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}
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// if this point was reached, no method was found => provider not capable
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return WBEM_E_PROVIDER_NOT_CAPABLE;
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}
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/*****************************************************************************
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*
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* FUNCTION : CDHCP_Subnet::LoadInstanceProperties
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*
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* RETURNS : TRUE if the values for all the properties was loaded successfully,
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* FALSE otherwise.
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*
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* COMMENTS : It loops through the Server_Property table, calling the GET functions.
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*
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*****************************************************************************/
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BOOL CDHCP_Subnet::LoadInstanceProperties(CInstance* pInstance)
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{
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CHString str;
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DHCP_IP_ADDRESS dwAddress;
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if (!pInstance->GetCHString(DHCP_Subnet_Property[IDX_SNET_Address].m_wsPropName, str) ||
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!inet_wstodw(str, dwAddress))
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return FALSE;
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// there should be used this object, in order to not call several times the DHCP Server API.
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CDHCP_Subnet_Parameters SubnetParameters(dwAddress);
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for (int i = 0; i < NUM_SUBNET_PROPERTIES; i++)
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{
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// if there is an invisible property (does not support GET) just skip it.
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if (DHCP_Subnet_Property[i].m_pfnActionGet == NULL)
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continue;
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// call the appropriate GET function, fail if the call fails (there should be no reason for failure)
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if (!(*(DHCP_Subnet_Property[i].m_pfnActionGet))(&SubnetParameters, NULL, pInstance))
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return FALSE;
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}
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return TRUE;
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}
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