private static DhcpServerOptionValue GetOptionValueV0(DhcpServer Server, IntPtr ScopeInfo, int OptionId)
{
try
{
IntPtr valuePtr;
var result = Api.DhcpGetOptionValue(Server.ipAddress.ToString(), OptionId, ScopeInfo, out valuePtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetOptionValue", result);
}
try
{
var value = (DHCP_OPTION_VALUE)Marshal.PtrToStructure(valuePtr, typeof(DHCP_OPTION_VALUE));
return(FromNative(Server, value, null, null));
}
finally
{
Api.DhcpRpcFreeMemory(valuePtr);
}
}
finally
{
Marshal.FreeHGlobal(ScopeInfo);
}
}
internal static DhcpServerClient GetClient(DhcpServer Server, DHCP_IP_ADDRESS IpAddress)
{
var searchInfo = new DHCP_SEARCH_INFO_IPADDRESS
{
SearchType = DHCP_SEARCH_INFO_TYPE.DhcpClientIpAddress,
ClientIpAddress = IpAddress
};
var searchInfoPtr = Marshal.AllocHGlobal(Marshal.SizeOf(searchInfo));
Marshal.StructureToPtr(searchInfo, searchInfoPtr, true);
if (Server.IsCompatible(DhcpServerVersions.Windows2008R2))
{
return(GetClientVQ(Server, searchInfoPtr));
}
else if (Server.IsCompatible(DhcpServerVersions.Windows2000))
{
return(GetClientV0(Server, searchInfoPtr));
}
else
{
Marshal.FreeHGlobal(searchInfoPtr);
throw new PlatformNotSupportedException(string.Format("DHCP Server v{0}.{1} does not support this feature", Server.VersionMajor, Server.VersionMinor));
}
}
internal static DhcpServerClass GetClass(DhcpServer server, string name)
{
var query = new DHCP_CLASS_INFO_Managed(className: name,
classDataLength: 0,
classData: IntPtr.Zero);
var result = Api.DhcpGetClassInfo(ServerIpAddress: server.Address,
ReservedMustBeZero: 0,
PartialClassInfo: query,
FilledClassInfo: out var classIntoPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpGetClassInfo), result);
}
try
{
using (var classInfo = classIntoPtr.MarshalToStructure <DHCP_CLASS_INFO>())
{
return(FromNative(server, in classInfo));
}
}
finally
{
Api.FreePointer(classIntoPtr);
}
}
private static DhcpServerClient GetClientVQ(DhcpServer Server, IntPtr SearchInfo)
{
try
{
IntPtr clientPtr;
DhcpErrors result = Api.DhcpGetClientInfoVQ(Server.ipAddress.ToString(), SearchInfo, out clientPtr);
if (result == DhcpErrors.JET_ERROR)
{
return(null);
}
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetClientInfoVQ", result);
}
try
{
var client = (DHCP_CLIENT_INFO_VQ)Marshal.PtrToStructure(clientPtr, typeof(DHCP_CLIENT_INFO_VQ));
return(DhcpServerClient.FromNative(Server, client));
}
finally
{
Api.DhcpRpcFreeMemory(clientPtr);
}
}
finally
{
Marshal.FreeHGlobal(SearchInfo);
}
}
internal static IEnumerable <DhcpServerBindingElement> GetBindingInfo(DhcpServer server)
{
var result = Api.DhcpGetServerBindingInfo(ServerIpAddress: server.Address,
Flags: 0,
BindElementsInfo: out var elementsPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpGetServerBindingInfo), result);
}
try
{
using (var elements = elementsPtr.MarshalToStructure <DHCP_BIND_ELEMENT_ARRAY>())
{
foreach (var element in elements.Elements)
{
yield return(FromNative(server, in element));
}
}
}
finally
{
Api.FreePointer(elementsPtr);
}
}
internal static DhcpServerScopeFailoverStatistics GetScopeFailoverStatistics(DhcpServer server, DhcpServerScope scope)
{
var result = Api.DhcpV4FailoverGetScopeStatistics(ServerIpAddress: server.Address,
ScopeId: scope.Address.ToNativeAsNetwork(),
Stats: out var statisticsPtr);
if (result == DhcpErrors.FO_SCOPE_NOT_IN_RELATIONSHIP)
{
return(null);
}
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpV4FailoverGetScopeStatistics), result);
}
try
{
var statistics = statisticsPtr.MarshalToStructure <DHCP_FAILOVER_STATISTICS>();
return(FromNative(server, scope, in statistics));
}
finally
{
Api.FreePointer(statisticsPtr);
}
}
private static DhcpServerOptionValue GetOptionValueV5(DhcpServer Server, IntPtr ScopeInfo, int OptionId, string ClassName, string VendorName)
{
try
{
IntPtr valuePtr;
uint flags = VendorName == null ? 0 : Constants.DHCP_FLAGS_OPTION_IS_VENDOR;
var result = Api.DhcpGetOptionValueV5(Server.ipAddress.ToString(), flags, OptionId, ClassName, VendorName, ScopeInfo, out valuePtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetOptionValueV5", result);
}
try
{
var value = (DHCP_OPTION_VALUE)Marshal.PtrToStructure(valuePtr, typeof(DHCP_OPTION_VALUE));
return(FromNative(Server, value, ClassName, VendorName));
}
finally
{
Api.DhcpRpcFreeMemory(valuePtr);
}
}
finally
{
Marshal.FreeHGlobal(ScopeInfo);
}
}
private static DhcpServerScope CreateOrReplicatePartnerScope(DhcpServer partnerServer, DhcpServerScope sourceScope)
{
// create scope on partner server (if it doesn't exist)
DhcpServerScope partnerScope;
try
{
// retrieve scope from partner
partnerScope = (DhcpServerScope)partnerServer.Scopes.GetScope(sourceScope.Address);
var existingRelationship = partnerScope.GetFailoverRelationship();
if (existingRelationship != null)
{
throw new DhcpServerException(nameof(Api.DhcpV4FailoverCreateRelationship), DhcpErrors.FO_SCOPE_ALREADY_IN_RELATIONSHIP);
}
// deactivate scope
partnerScope.Deactivate();
}
catch (DhcpServerException ex) when(ex.ApiErrorNative == DhcpErrors.SUBNET_NOT_PRESENT)
{
// create scope (including excluded ranges)
partnerScope = (DhcpServerScope)partnerServer.Scopes.AddScope(sourceScope.Name, sourceScope.Comment, sourceScope.IpRange, sourceScope.Mask, sourceScope.TimeDelayOffer, sourceScope.LeaseDuration);
}
// replicate scope
sourceScope.ReplicateTo(partnerScope);
return(partnerScope);
}
internal static IEnumerable <DhcpServerOption> GetAllOptions(DhcpServer Server)
{
IntPtr optionsPtr;
var result = Api.DhcpGetAllOptions(Server.ipAddress.ToString(), 0, out optionsPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetAllOptions", result);
}
try
{
var bytes = new byte[64];
Marshal.Copy(optionsPtr, bytes, 0, 64);
var options = (DHCP_ALL_OPTIONS)Marshal.PtrToStructure(optionsPtr, typeof(DHCP_ALL_OPTIONS));
foreach (var option in options.NonVendorOptions.Options)
{
yield return(DhcpServerOption.FromNative(Server, option, null, null));
}
foreach (var option in options.VendorOptions)
{
yield return(DhcpServerOption.FromNative(Server, option));
}
}
finally
{
Api.DhcpRpcFreeMemory(optionsPtr);
}
}
internal static IEnumerable <DhcpServerOption> GetAllOptions(DhcpServer server)
{
var result = Api.DhcpGetAllOptions(ServerIpAddress: server.Address,
Flags: 0,
OptionStruct: out var optionsPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpGetAllOptions), result);
}
try
{
using (var options = optionsPtr.MarshalToStructure <DHCP_ALL_OPTIONS>())
{
foreach (var option in options.NonVendorOptions.Options)
{
yield return(FromNative(server, in option, null, null));
}
foreach (var option in options.VendorOptions)
{
yield return(FromNative(server, in option));
}
}
}
finally
{
Api.FreePointer(optionsPtr);
}
}
internal static DhcpServerFailoverRelationship GetFailoverRelationship(DhcpServer server, DhcpServerIpAddress subnetAddress)
{
var result = Api.DhcpV4FailoverGetScopeRelationship(ServerIpAddress: server.Address,
ScopeId: subnetAddress.ToNativeAsNetwork(),
Relationship: out var relationshipPtr);
if (result == DhcpErrors.FO_SCOPE_NOT_IN_RELATIONSHIP)
{
return(null);
}
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpV4FailoverGetScopeRelationship), result);
}
try
{
using (var relationship = relationshipPtr.MarshalToStructure <DHCP_FAILOVER_RELATIONSHIP>())
{
return(FromNative(server, in relationship));
}
}
finally
{
Api.FreePointer(relationshipPtr);
}
}
internal static IEnumerable <DhcpServerClass> GetClasses(DhcpServer Server)
{
IntPtr enumInfoPtr;
int elementsRead, elementsTotal;
IntPtr resumeHandle = IntPtr.Zero;
var result = Api.DhcpEnumClasses(Server.ipAddress.ToString(), 0, ref resumeHandle, 0xFFFFFFFF, out enumInfoPtr, out elementsRead, out elementsTotal);
if (result == DhcpErrors.ERROR_NO_MORE_ITEMS || result == DhcpErrors.EPT_S_NOT_REGISTERED)
{
yield break;
}
if (result != DhcpErrors.SUCCESS && result != DhcpErrors.ERROR_MORE_DATA)
{
throw new DhcpServerException("DhcpEnumClasses", result);
}
if (elementsRead > 0)
{
var enumInfo = (DHCP_CLASS_INFO_ARRAY)Marshal.PtrToStructure(enumInfoPtr, typeof(DHCP_CLASS_INFO_ARRAY));
try
{
foreach (var element in enumInfo.Classes)
{
yield return(FromNative(Server, element));
}
}
finally
{
Api.DhcpRpcFreeMemory(enumInfoPtr);
}
}
}
internal static DhcpServerClass GetClass(DhcpServer Server, string Name)
{
IntPtr classIntoPtr;
var query = new DHCP_CLASS_INFO()
{
ClassName = Name,
ClassDataLength = 0,
ClassData = IntPtr.Zero
};
var result = Api.DhcpGetClassInfo(Server.ipAddress.ToString(), 0, query, out classIntoPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetClassInfo", result);
}
var classInfo = (DHCP_CLASS_INFO)Marshal.PtrToStructure(classIntoPtr, typeof(DHCP_CLASS_INFO));
var dhcpClass = FromNative(Server, classInfo);
Api.DhcpRpcFreeMemory(classIntoPtr);
return(dhcpClass);
}
internal static IEnumerable <DhcpServerBindingElement> GetBindingInfo(DhcpServer Server)
{
IntPtr elementsPtr;
var result = Api.DhcpGetServerBindingInfo(Server.ipAddress.ToString(), 0, out elementsPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpGetServerBindingInfo", result);
}
try
{
var elements = (DHCP_BIND_ELEMENT_ARRAY)Marshal.PtrToStructure(elementsPtr, typeof(DHCP_BIND_ELEMENT_ARRAY));
foreach (var element in elements.Elements)
{
yield return(FromNative(Server, element));
}
}
finally
{
Api.DhcpRpcFreeMemory(elementsPtr);
}
}
private static DhcpServerOption GetOptionV5(DhcpServer server, int optionId, string className, string vendorName)
{
var result = Api.DhcpGetOptionInfoV5(ServerIpAddress: server.Address,
Flags: (vendorName == null) ? 0 : Constants.DHCP_FLAGS_OPTION_IS_VENDOR,
OptionID: optionId,
ClassName: className,
VendorName: vendorName,
OptionInfo: out var optionPtr);
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException(nameof(Api.DhcpGetOptionInfoV5), result);
}
try
{
using (var option = optionPtr.MarshalToStructure <DHCP_OPTION>())
{
return(FromNative(server, in option, className, vendorName));
}
}
finally
{
Api.FreePointer(optionPtr);
}
}
internal static IEnumerable <DhcpServerScope> GetScopes(DhcpServer Server)
{
IntPtr enumInfoPtr;
int elementsRead, elementsTotal;
IntPtr resumeHandle = IntPtr.Zero;
var result = Api.DhcpEnumSubnets(Server.ipAddress.ToString(), ref resumeHandle, 0xFFFFFFFF, out enumInfoPtr, out elementsRead, out elementsTotal);
if (result == DhcpErrors.ERROR_NO_MORE_ITEMS || result == DhcpErrors.EPT_S_NOT_REGISTERED)
{
yield break;
}
if (result != DhcpErrors.SUCCESS)
{
throw new DhcpServerException("DhcpEnumSubnets", result);
}
if (elementsRead > 0)
{
var enumInfo = (DHCP_IP_ARRAY)Marshal.PtrToStructure(enumInfoPtr, typeof(DHCP_IP_ARRAY));
try
{
foreach (var scopeAddress in enumInfo.Elements)
{
yield return(new DhcpServerScope(Server, (DHCP_IP_ADDRESS)scopeAddress));
}
}
finally
{
Api.DhcpRpcFreeMemory(enumInfoPtr);
}
}
}
private DhcpServerAuditLog(DhcpServer server, string auditLogDir, int diskCheckInterval, int maxLogFilesSize, int minSpaceOnDisk)
{
Server = server;
AuditLogDirectory = auditLogDir;
DiskCheckInterval = diskCheckInterval;
MaxLogFilesSize = maxLogFilesSize;
MinSpaceOnDisk = minSpaceOnDisk;
}
private DhcpServerClass(DhcpServer server, string name, string comment, bool isVendorClass, byte[] data)
{
Server = server;
Name = name;
Comment = comment;
IsVendorClass = isVendorClass;
Data = data;
}
internal static IEnumerable <DhcpServerOption> EnumVendorOptions(DhcpServer Server, string VendorName)
{
if (!Server.IsCompatible(DhcpServerVersions.Windows2008R2))
{
throw new PlatformNotSupportedException(string.Format("DHCP Server v{0}.{1} does not support this feature", Server.VersionMajor, Server.VersionMinor));
}
return(EnumOptionsV5(Server, null, VendorName));
}
internal static IEnumerable <DhcpServerOption> EnumVendorOptions(DhcpServer server, string vendorName)
{
if (!server.IsCompatible(DhcpServerVersions.Windows2008R2))
{
throw new PlatformNotSupportedException($"DHCP Server v{server.VersionMajor}.{server.VersionMinor} does not support this feature");
}
return(EnumOptionsV5(server, null, vendorName));
}
private static DhcpServerOptionValue FromNative(DhcpServer Server, DHCP_OPTION_VALUE Native, string ClassName, string VendorName)
{
return(new DhcpServerOptionValue(Server)
{
OptionId = Native.OptionID,
Values = DhcpServerOptionElement.ReadNativeElements(Native.Value).ToList(),
ClassName = ClassName,
VendorName = VendorName
});
}
internal static IEnumerable <DhcpServerOption> EnumDefaultOptions(DhcpServer server)
{
if (server.IsCompatible(DhcpServerVersions.Windows2008R2))
{
return(EnumOptionsV5(server, null, null));
}
else
{
return(EnumOptionsV0(server));
}
}
public IDhcpServer ConnectToPartner()
{
if (ServerType == DhcpServerFailoverServerType.PrimaryServer)
{
return(DhcpServer.Connect(SecondaryServerAddress.ToString()));
}
else
{
return(DhcpServer.Connect(PrimaryServerAddress.ToString()));
}
}
internal DhcpServerOptionValue(DhcpServer server, int optionId, string className, string vendorName, List <DhcpServerOptionElement> values)
{
Server = server;
OptionId = optionId;
ClassName = className;
VendorName = vendorName;
Values = values;
}
private DhcpServerBindingElement(DhcpServer server, bool cantModify, bool isBound, DhcpServerIpAddress adapterPrimaryIpAddress, DhcpServerIpMask adapterSubnetAddress, string interfaceDescription, Guid interfaceGuidId, byte[] interfaceId)
{
Server = server;
CantModify = cantModify;
IsBound = isBound;
AdapterPrimaryIpAddress = adapterPrimaryIpAddress;
AdapterSubnetAddress = adapterSubnetAddress;
InterfaceDescription = interfaceDescription;
this.interfaceId = interfaceId;
InterfaceGuidId = interfaceGuidId;
}
private DhcpServerConfiguration(DhcpServer server, DhcpServerApiProtocol apiProtocolSupport, string databaseName, string databasePath, string backupPath, TimeSpan backupInterval, bool databaseLoggingEnabled, TimeSpan databaseCleanupInterval)
{
Server = server;
ApiProtocolSupport = apiProtocolSupport;
DatabaseName = databaseName;
DatabasePath = databasePath;
BackupPath = backupPath;
BackupInterval = backupInterval;
DatabaseLoggingEnabled = databaseLoggingEnabled;
DatabaseCleanupInterval = databaseCleanupInterval;
}
internal DhcpServerScope(DhcpServer Server, DHCP_IP_ADDRESS SubnetAddress)
{
this.Server = Server;
this.address = SubnetAddress;
this.info = new Lazy <DHCP_SUBNET_INFO>(GetInfo);
this.timeDelayOffer = new Lazy <TimeSpan>(GetTimeDelayOffer);
this.ipRange = new Lazy <DhcpServerIpRange>(GetIpRange);
this.excludedIpRanges = new Lazy <List <DhcpServerIpRange> >(GetExcludedIpRanges);
this.leaseDuration = new Lazy <TimeSpan>(GetLeaseDuration);
this.dnsSettings = new Lazy <DhcpServerDnsSettings>(() => DhcpServerDnsSettings.GetScopeDnsSettings(this));
}
private DhcpServerScopeFailoverStatistics(DhcpServer server, DhcpServerScope scope, int addressesTotal, int addressesFree, int addressesInUse, int partnerAddressesFree, int localAddressesFree, int partnerAddressInUse, int localAddressesInUse)
{
Server = server;
Scope = scope;
AddressesTotal = addressesTotal;
AddressesFree = addressesFree;
AddressesInUse = addressesInUse;
PartnerAddressesFree = partnerAddressesFree;
LocalAddressesFree = localAddressesFree;
PartnerAddressesInUse = partnerAddressInUse;
LocalAddressesInUse = localAddressesInUse;
}
private DhcpServerOption(DhcpServer server, int optionId, string name, string comment, IEnumerable <DhcpServerOptionElement> defaultValue, bool isUnaryOption, string vendorName, string className)
{
Server = server;
OptionId = optionId;
Name = name;
Comment = comment;
DefaultValue = defaultValue;
ValueType = defaultValue.First().Type;
IsUnaryOption = isUnaryOption;
VendorName = vendorName;
ClassName = className;
}
private static DhcpServerOption FromNative(DhcpServer Server, DHCP_VENDOR_OPTION Native)
{
return(new DhcpServerOption(Server)
{
OptionId = Native.OptionID,
Name = Native.OptionName,
Comment = Native.OptionComment,
DefaultValue = DhcpServerOptionElement.ReadNativeElements(Native.DefaultValue).ToList(),
IsUnaryOption = Native.OptionType == DHCP_OPTION_TYPE.DhcpUnaryElementTypeOption,
VendorName = Native.VendorName,
ClassName = Native.ClassName
});
}
