/****************************************************************** ResScal.cpp -- WBEM provider class implementation MODULE: DhcpProv.dll DESCRIPTION: Contains: the definition of the DHCP_Reservation class, the static table of manageable objects. REVISION: 08/14/98 - created ******************************************************************/ #include #include "RngFn.h" // needed for the declarations of all the functions. #include "RngScal.h" // own header #include "SrvFn.h" // for server parameters // the name of the WBEM class #define PROVIDER_NAME_DHCP_RANGE "DHCP_Range" // main class instantiation. CDHCP_Range MyDHCP_Range_Scalars (PROVIDER_NAME_DHCP_RANGE, PROVIDER_NAMESPACE_DHCP) ; /***************************************************************************** * * FUNCTION : CDHCP_Range::CDHCP_Range * * DESCRIPTION : Constructor * * INPUTS : none * * RETURNS : nothing * * COMMENTS : Calls the Provider constructor. * *****************************************************************************/ CDHCP_Range::CDHCP_Range (const CHString& strName, LPCSTR pszNameSpace ) : Provider(strName, pszNameSpace) { } /***************************************************************************** * * FUNCTION : CDHCP_Range::~CDHCP_Range * * DESCRIPTION : Destructor * * INPUTS : none * * RETURNS : nothing * * COMMENTS : * *****************************************************************************/ CDHCP_Range::~CDHCP_Range() { } /***************************************************************************** * * FUNCTION : CDHCP_Range::EnumerateInstances * * DESCRIPTION : Returns all the instances of this class. * * INPUTS : none * * RETURNS : WBEM_S_NO_ERROR if successful * * COMMENTS : Enumerates all this instances of this class. Here we scan * all the subnets, for which we get the info on all * clients. *****************************************************************************/ HRESULT CDHCP_Range::EnumerateInstances ( MethodContext* pMethodContext, long lFlags ) { CDHCP_Server_Parameters srvParams; LPDHCP_MIB_INFO pSrvMibInfo; HRESULT hRes = WBEM_S_NO_ERROR; if (!srvParams.GetMibInfo(pSrvMibInfo, TRUE)) return WBEM_E_FAILED; // loop through all the subnets configured on the local server for (int i = 0; hRes == WBEM_S_NO_ERROR && i < pSrvMibInfo->Scopes; i++) { DWORD dwSubnet; DHCP_RESUME_HANDLE ResumeHandle; WCHAR wcsSubnet[16]; // should be enough for holding 'xxx.yyy.zzz.uuu\0' dwSubnet = pSrvMibInfo->ScopeInfo[i].Subnet; CDHCP_Range_Parameters rngParams(dwSubnet); // build the str representation of the Subnet address swprintf(wcsSubnet, L"%u.%u.%u.%u",(dwSubnet & 0xff000000) >> 24, (dwSubnet & 0x00ff0000) >> 16, (dwSubnet & 0x0000ff00) >> 8, (dwSubnet & 0x000000ff)); // one loop for included ranges, one loop for excluded ranges for (int k = 0; k < 2; k++) { ResumeHandle = 0; // for each subnet and each type of range, loop through all the range buffers belonging to it do { DWORD errCode; // load the next buffer errCode = rngParams.NextSubnetRange(ResumeHandle, k == 0 ? DhcpIpRanges : DhcpExcludedIpRanges); // if ERROR_NO_MORE_ITEMS than no information was filled into m_pRangeInfoArray (which is null) if (errCode == ERROR_NO_MORE_ITEMS) break; // two alternatives here: ERROR_MORE_DATA (ResumeHandle != 0) and ERROR_SUCCESS (which case // the API is setting ResumeHandle to NULL (hope so :o). In both cases, just go on. if (errCode != ERROR_MORE_DATA && errCode != ERROR_SUCCESS) return WBEM_E_FAILED; // for the current buffer, loop through all the ranges for (int j = 0; hRes == WBEM_S_NO_ERROR && j < rngParams.m_pRangeInfoArray->NumElements; j++) { // this is finally the info of the current range LPDHCP_IP_RANGE pRange = (k == 0)? (LPDHCP_IP_RANGE)(rngParams.m_pRangeInfoArray->Elements[j].Element.IpRange) : (LPDHCP_IP_RANGE)(rngParams.m_pRangeInfoArray->Elements[j].Element.ExcludeIpRange); WCHAR wcsAddress[16]; // should be enough for holding 'xxx.yyy.zzz.uuu\0' // we finally have everything we need for the creating one more instance CInstance* pInstance = CreateNewInstance(pMethodContext); //----------------- add 'Subnet' property to the instance ------------------- if (pInstance == NULL || !pInstance->SetCHString(PROP_Range_Subnet, wcsSubnet)) return WBEM_E_FAILED; //----------------- add 'StartAddress' property to the instance ------------- // build the str representation of the ReservationIpAddress address swprintf(wcsAddress, L"%u.%u.%u.%u",(pRange->StartAddress & 0xff000000) >> 24, (pRange->StartAddress & 0x00ff0000) >> 16, (pRange->StartAddress & 0x0000ff00) >> 8, (pRange->StartAddress & 0x000000ff)); if (!pInstance->SetCHString(PROP_Range_StartAddress, wcsAddress)) return WBEM_E_FAILED; //----------------- add 'EndAddress' property to the instance --------------- // build the str representation of the ReservationIpAddress address swprintf(wcsAddress, L"%u.%u.%u.%u",(pRange->EndAddress & 0xff000000) >> 24, (pRange->EndAddress & 0x00ff0000) >> 16, (pRange->EndAddress & 0x0000ff00) >> 8, (pRange->EndAddress & 0x000000ff)); if (!pInstance->SetCHString(PROP_Range_EndAddress, wcsAddress)) return WBEM_E_FAILED; //----------------- add 'RangeType' property to the instance ---------------- if (!pInstance->SetDWORD(PROP_Range_RangeType, k==0? DhcpIpRanges : DhcpExcludedIpRanges)); //~~~~~~~~~~~~~~~~~ Commit the instance ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ hRes = Commit(pInstance); } } while (ResumeHandle != 0); // bail if ResumeHandle got back to 0 (the end was reached) } } return WBEM_S_NO_ERROR; } /***************************************************************************** * * FUNCTION : CDHCP_Range::GetObject * * DESCRIPTION : Find a single instance based on the key properties for the * class. * * INPUTS : A pointer to a CInstance object containing the key properties. * * RETURNS : WBEM_S_NO_ERROR if the instance can be found * WBEM_E_NOT_FOUND if the instance described by the key properties * could not be found * WBEM_E_FAILED if the instance could be found but another error * occurred. * * COMMENTS : * *****************************************************************************/ HRESULT CDHCP_Range::GetObject ( CInstance* pInstance, long lFlags ) { CHString str; DWORD dwSubnet, dwStartAddress, dwEndAddress, dwRangeType; if (pInstance == NULL || !pInstance->GetCHString(PROP_Range_Subnet, str) || !inet_wstodw(str, dwSubnet) || !pInstance->GetCHString(PROP_Range_StartAddress, str) || !inet_wstodw(str, dwStartAddress) || !pInstance->GetCHString(PROP_Range_EndAddress, str) || !inet_wstodw(str, dwEndAddress) || !pInstance->GetDWORD(PROP_Range_RangeType, dwRangeType)) return WBEM_E_FAILED; CDHCP_Range_Parameters rngParams(dwSubnet, dwStartAddress, dwEndAddress); return rngParams.CheckExistsRange((DHCP_SUBNET_ELEMENT_TYPE)dwRangeType) ? WBEM_S_NO_ERROR : WBEM_E_NOT_FOUND; } /***************************************************************************** * * FUNCTION : CDHCP_Range::PutInstance * * DESCRIPTION : PutInstance should be used in provider classes that can write * instance information back to the hardware or software. * For example: Win32_Environment will allow a PutInstance of a new * environment variable, because environment variables are "software" * related. However, a class like Win32_MotherboardDevice will not * allow editing of the bus speed. Since by default PutInstance * returns WBEM_E_PROVIDER_NOT_CAPABLE, this function is placed here as a * skeleton, but can be removed if not used. * * INPUTS : * * RETURNS : WBEM_E_PROVIDER_NOT_CAPABLE if PutInstance is not available * WBEM_E_FAILED if there is an error delivering the instance * WBEM_E_INVALID_PARAMETER if any of the instance properties * are incorrect. * WBEM_S_NO_ERROR if instance is properly delivered * * COMMENTS : TO DO: If you don't intend to support writing to your provider, remove this method. * *****************************************************************************/ HRESULT CDHCP_Range::PutInstance ( const CInstance &Instance, long lFlags) { CHString str; DWORD dwSubnet, dwStartAddress, dwEndAddress, dwRangeType; if (!Instance.GetCHString(PROP_Range_Subnet, str) || !inet_wstodw(str, dwSubnet) || !Instance.GetCHString(PROP_Range_StartAddress, str) || !inet_wstodw(str, dwStartAddress) || !Instance.GetCHString(PROP_Range_EndAddress, str) || !inet_wstodw(str, dwEndAddress) || !Instance.GetDWORD(PROP_Range_RangeType, dwRangeType)) return WBEM_E_FAILED; CDHCP_Range_Parameters rngParams(dwSubnet, dwStartAddress, dwEndAddress); return rngParams.CreateRange((DHCP_SUBNET_ELEMENT_TYPE)dwRangeType) ? WBEM_S_NO_ERROR : WBEM_E_NOT_FOUND; } /***************************************************************************** * * FUNCTION : CDHCP_Range::DeleteInstance * * DESCRIPTION : DeleteInstance, like PutInstance, actually writes information * to the software or hardware. For most hardware devices, * DeleteInstance should not be implemented, but for software * configuration, DeleteInstance implementation is plausible. * Like PutInstance, DeleteInstance returns WBEM_E_PROVIDER_NOT_CAPABLE from * inside Provider::DeleteInstance (defined in Provider.h). So, if * you choose not to implement DeleteInstance, remove this function * definition and the declaration from DHCP_Server_Scalars.h * * INPUTS : * * RETURNS : WBEM_E_PROVIDER_NOT_CAPABLE if DeleteInstance is not available. * WBEM_E_FAILED if there is an error deleting the instance. * WBEM_E_INVALID_PARAMETER if any of the instance properties * are incorrect. * WBEM_S_NO_ERROR if instance is properly deleted. * * COMMENTS : TO DO: If you don't intend to support deleting instances, remove this method. * *****************************************************************************/ HRESULT CDHCP_Range::DeleteInstance ( const CInstance &Instance, long lFlags ) { CHString str; DWORD dwSubnet, dwStartAddress, dwEndAddress, dwRangeType; if (!Instance.GetCHString(PROP_Range_Subnet, str) || !inet_wstodw(str, dwSubnet) || !Instance.GetCHString(PROP_Range_StartAddress, str) || !inet_wstodw(str, dwStartAddress) || !Instance.GetCHString(PROP_Range_EndAddress, str) || !inet_wstodw(str, dwEndAddress) || !Instance.GetDWORD(PROP_Range_RangeType, dwRangeType)) return WBEM_E_FAILED; CDHCP_Range_Parameters rngParams(dwSubnet, dwStartAddress, dwEndAddress); return rngParams.DeleteRange((DHCP_SUBNET_ELEMENT_TYPE)dwRangeType) ? WBEM_S_NO_ERROR : WBEM_E_NOT_FOUND; } /***************************************************************************** * * FUNCTION : CDHCP_Range::ExecQuery * * DESCRIPTION : You are passed a method context to use in the creation of * instances that satisfy the query, and a CFrameworkQuery * which describes the query. Create and populate all * instances which satisfy the query. CIMOM will post - * filter the query for you, you may return more instances * or more properties than are requested and CIMOM * will filter out any that do not apply. * * * INPUTS : * * RETURNS : WBEM_E_PROVIDER_NOT_CAPABLE if not supported for this class * WBEM_E_FAILED if the query failed * WBEM_S_NO_ERROR if query was successful * * COMMENTS : TO DO: Most providers will not need to implement this method. If you don't, cimom * will call your enumerate function to get all the instances and perform the * filtering for you. Unless you expect SIGNIFICANT savings from implementing * queries, you should remove this entire method. * *****************************************************************************/ HRESULT CDHCP_Range::ExecQuery (MethodContext *pMethodContext, CFrameworkQuery& Query, long lFlags) { return WBEM_E_PROVIDER_NOT_CAPABLE; } /***************************************************************************** * * FUNCTION : CDHCP_Range::ExecMethod * * DESCRIPTION : Override this function to provide support for methods. * A method is an entry point for the user of your provider * to request your class perform some function above and * beyond a change of state. (A change of state should be * handled by PutInstance() ) * * INPUTS : A pointer to a CInstance containing the instance the method was executed against. * A string containing the method name * A pointer to the CInstance which contains the IN parameters. * A pointer to the CInstance to contain the OUT parameters. * A set of specialized method flags * * RETURNS : WBEM_E_PROVIDER_NOT_CAPABLE if not implemented for this class * WBEM_S_NO_ERROR if method executes successfully * WBEM_E_FAILED if error occurs executing method * * COMMENTS : TO DO: If you don't intend to support Methods, remove this method. * *****************************************************************************/ HRESULT CDHCP_Range::ExecMethod ( const CInstance& Instance, const BSTR bstrMethodName, CInstance *pInParams, CInstance *pOutParams, long lFlags) { return WBEM_E_PROVIDER_NOT_CAPABLE; }