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# SECUREAUTH LABS. Copyright 2018 SecureAuth Corporation. All rights reserved. 

# 

# This software is provided under under a slightly modified version 

# of the Apache Software License. See the accompanying LICENSE file 

# for more information. 

# 

# Author: Alberto Solino (@agsolino) 

# 

# Description: 

# [MS-DHCPM] Interface implementation 

# 

# Best way to learn how to use these calls is to grab the protocol standard 

# so you understand what the call does, and then read the test case located 

# at https://github.com/SecureAuthCorp/impacket/tree/master/tests/SMB_RPC 

# 

# Some calls have helper functions, which makes it even easier to use. 

# They are located at the end of this file. 

# Helper functions start with "h"<name of the call>. 

# There are test cases for them too. 

# 

from __future__ import division 

from __future__ import print_function 

from impacket import system_errors 

from impacket.dcerpc.v5.dtypes import LPWSTR, ULONG, NULL, DWORD, BOOL, BYTE, LPDWORD, WORD 

from impacket.dcerpc.v5.ndr import NDRCALL, NDRUniConformantArray, NDRPOINTER, NDRSTRUCT, NDRENUM, NDRUNION 

from impacket.dcerpc.v5.rpcrt import DCERPCException 

from impacket.dcerpc.v5.enum import Enum 

from impacket.uuid import uuidtup_to_bin 

 

MSRPC_UUID_DHCPSRV = uuidtup_to_bin(('6BFFD098-A112-3610-9833-46C3F874532D', '1.0')) 

MSRPC_UUID_DHCPSRV2 = uuidtup_to_bin(('5B821720-F63B-11D0-AAD2-00C04FC324DB', '1.0')) 

 

 

class DCERPCSessionError(DCERPCException): 

ERROR_MESSAGES = { 

0x00004E2D: ("ERROR_DHCP_JET_ERROR", "An error occurred while accessing the DHCP server database."), 

0x00004E25: ("ERROR_DHCP_SUBNET_NOT_PRESENT", "The specified IPv4 subnet does not exist."), 

0x00004E54: ("ERROR_DHCP_SUBNET_EXISTS", "The IPv4 scope parameters are incorrect. Either the IPv4 scope already" 

" exists, corresponding to the SubnetAddress and SubnetMask members of " 

"the structure DHCP_SUBNET_INFO (section 2.2.1.2.8), or there is a " 

"range overlap of IPv4 addresses between those associated with the " 

"SubnetAddress and SubnetMask fields of the new IPv4 scope and the " 

"subnet address and mask of an already existing IPv4 scope"), 

 

} 

def __init__(self, error_string=None, error_code=None, packet=None): 

DCERPCException.__init__(self, error_string, error_code, packet) 

 

def __str__(self): 

key = self.error_code 

if key in system_errors.ERROR_MESSAGES: 

error_msg_short = system_errors.ERROR_MESSAGES[key][0] 

error_msg_verbose = system_errors.ERROR_MESSAGES[key][1] 

return 'DHCPM SessionError: code: 0x%x - %s - %s' % (self.error_code, error_msg_short, error_msg_verbose) 

elif key in self.ERROR_MESSAGES: 

error_msg_short = self.ERROR_MESSAGES[key][0] 

error_msg_verbose = self.ERROR_MESSAGES[key][1] 

return 'DHCPM SessionError: code: 0x%x - %s - %s' % (self.error_code, error_msg_short, error_msg_verbose) 

else: 

return 'DHCPM SessionError: unknown error code: 0x%x' % self.error_code 

 

################################################################################ 

# CONSTANTS 

################################################################################ 

DHCP_SRV_HANDLE = LPWSTR 

DHCP_IP_ADDRESS = DWORD 

DHCP_IP_MASK = DWORD 

DHCP_OPTION_ID = DWORD 

 

# DHCP enumeratiom flags 

DHCP_FLAGS_OPTION_DEFAULT = 0x00000000 

DHCP_FLAGS_OPTION_IS_VENDOR = 0x00000003 

 

# Errors 

ERROR_DHCP_JET_ERROR = 0x00004E2D 

ERROR_DHCP_SUBNET_NOT_PRESENT = 0x00004E25 

ERROR_DHCP_SUBNET_EXISTS = 0x00004E54 

################################################################################ 

# STRUCTURES 

################################################################################ 

# 2.2.1.1.3 DHCP_SEARCH_INFO_TYPE 

class DHCP_SEARCH_INFO_TYPE(NDRENUM): 

class enumItems(Enum): 

DhcpClientIpAddress = 0 

DhcpClientHardwareAddress = 1 

DhcpClientName = 2 

 

# 2.2.1.1.11 QuarantineStatus 

class QuarantineStatus(NDRENUM): 

class enumItems(Enum): 

NOQUARANTINE = 0 

RESTRICTEDACCESS = 1 

DROPPACKET = 2 

PROBATION = 3 

EXEMPT = 4 

DEFAULTQUARSETTING = 5 

NOQUARINFO = 6 

 

# 2.2.1.2.7 DHCP_HOST_INFO 

class DHCP_HOST_INFO(NDRSTRUCT): 

structure = ( 

('IpAddress', DHCP_IP_ADDRESS), 

('NetBiosName', LPWSTR), 

('HostName', LPWSTR), 

) 

 

# 2.2.1.2.9 DHCP_BINARY_DATA 

class BYTE_ARRAY(NDRUniConformantArray): 

item = 'c' 

 

class PBYTE_ARRAY(NDRPOINTER): 

referent = ( 

('Data', BYTE_ARRAY), 

) 

 

class DHCP_BINARY_DATA(NDRSTRUCT): 

structure = ( 

('DataLength', DWORD), 

('Data_', PBYTE_ARRAY), 

) 

 

DHCP_CLIENT_UID = DHCP_BINARY_DATA 

 

# 2.2.1.2.11 DATE_TIME 

class DATE_TIME(NDRSTRUCT): 

structure = ( 

('dwLowDateTime', DWORD), 

('dwHighDateTime', DWORD), 

) 

 

# 2.2.1.2.19 DHCP_CLIENT_INFO_VQ 

class DHCP_CLIENT_INFO_VQ(NDRSTRUCT): 

structure = ( 

('ClientIpAddress', DHCP_IP_ADDRESS), 

('SubnetMask', DHCP_IP_MASK), 

('ClientHardwareAddress', DHCP_CLIENT_UID), 

('ClientName', LPWSTR), 

('ClientComment', LPWSTR), 

('ClientLeaseExpires', DATE_TIME), 

('OwnerHost', DHCP_HOST_INFO), 

('bClientType', BYTE), 

('AddressState', BYTE), 

('Status', QuarantineStatus), 

('ProbationEnds', DATE_TIME), 

('QuarantineCapable', BOOL), 

) 

 

class DHCP_CLIENT_SEARCH_UNION(NDRUNION): 

union = { 

DHCP_SEARCH_INFO_TYPE.DhcpClientIpAddress: ('ClientIpAddress', DHCP_IP_ADDRESS), 

DHCP_SEARCH_INFO_TYPE.DhcpClientHardwareAddress: ('ClientHardwareAddress', DHCP_CLIENT_UID), 

DHCP_SEARCH_INFO_TYPE.DhcpClientName: ('ClientName', LPWSTR), 

} 

 

class DHCP_SEARCH_INFO(NDRSTRUCT): 

structure = ( 

('SearchType', DHCP_SEARCH_INFO_TYPE), 

('SearchInfo', DHCP_CLIENT_SEARCH_UNION), 

) 

 

# 2.2.1.2.14 DHCP_CLIENT_INFO_V4 

class DHCP_CLIENT_INFO_V4(NDRSTRUCT): 

structure = ( 

('ClientIpAddress', DHCP_IP_ADDRESS), 

('SubnetMask', DHCP_IP_MASK), 

('ClientHardwareAddress', DHCP_CLIENT_UID), 

('ClientName', LPWSTR), 

('ClientComment', LPWSTR), 

('ClientLeaseExpires', DATE_TIME), 

('OwnerHost', DHCP_HOST_INFO), 

('bClientType', BYTE), 

) 

 

class DHCP_CLIENT_INFO_V5(NDRSTRUCT): 

structure = ( 

('ClientIpAddress', DHCP_IP_ADDRESS), 

('SubnetMask', DHCP_IP_MASK), 

('ClientHardwareAddress', DHCP_CLIENT_UID), 

('ClientName', LPWSTR), 

('ClientComment', LPWSTR), 

('ClientLeaseExpires', DATE_TIME), 

('OwnerHost', DHCP_HOST_INFO), 

('bClientType', BYTE), 

('AddressState', BYTE), 

) 

 

class LPDHCP_CLIENT_INFO_V4(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_V4), 

) 

 

class LPDHCP_CLIENT_INFO_V5(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_V5), 

) 

 

# 2.2.1.2.115 DHCP_CLIENT_INFO_PB 

class DHCP_CLIENT_INFO_PB(NDRSTRUCT): 

structure = ( 

('ClientIpAddress', DHCP_IP_ADDRESS), 

('SubnetMask', DHCP_IP_MASK), 

('ClientHardwareAddress', DHCP_CLIENT_UID), 

('ClientName', LPWSTR), 

('ClientComment', LPWSTR), 

('ClientLeaseExpires', DATE_TIME), 

('OwnerHost', DHCP_HOST_INFO), 

('bClientType', BYTE), 

('AddressState', BYTE), 

('Status', QuarantineStatus), 

('ProbationEnds', DATE_TIME), 

('QuarantineCapable', BOOL), 

('FilterStatus', DWORD), 

('PolicyName', LPWSTR), 

) 

 

class LPDHCP_CLIENT_INFO_PB(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_PB), 

) 

 

class LPDHCP_CLIENT_INFO_VQ(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_VQ), 

) 

 

class DHCP_CLIENT_INFO_VQ_ARRAY(NDRUniConformantArray): 

item = LPDHCP_CLIENT_INFO_VQ 

 

class LPDHCP_CLIENT_INFO_VQ_ARRAY(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_VQ_ARRAY), 

) 

 

class DHCP_CLIENT_INFO_ARRAY_VQ(NDRSTRUCT): 

structure = ( 

('NumElements', DWORD), 

('Clients', LPDHCP_CLIENT_INFO_VQ_ARRAY), 

) 

 

class LPDHCP_CLIENT_INFO_ARRAY_VQ(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_ARRAY_VQ), 

) 

 

class DHCP_CLIENT_INFO_V4_ARRAY(NDRUniConformantArray): 

item = LPDHCP_CLIENT_INFO_V4 

 

class DHCP_CLIENT_INFO_V5_ARRAY(NDRUniConformantArray): 

item = LPDHCP_CLIENT_INFO_V5 

 

class LPDHCP_CLIENT_INFO_V4_ARRAY(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_V4_ARRAY), 

) 

 

class LPDHCP_CLIENT_INFO_V5_ARRAY(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_V5_ARRAY), 

) 

 

class DHCP_CLIENT_INFO_ARRAY_V4(NDRSTRUCT): 

structure = ( 

('NumElements', DWORD), 

('Clients', LPDHCP_CLIENT_INFO_V4_ARRAY), 

) 

 

class DHCP_CLIENT_INFO_ARRAY_V5(NDRSTRUCT): 

structure = ( 

('NumElements', DWORD), 

('Clients', LPDHCP_CLIENT_INFO_V4_ARRAY), 

) 

 

class LPDHCP_CLIENT_INFO_ARRAY_V5(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_ARRAY_V5), 

) 

 

class LPDHCP_CLIENT_INFO_ARRAY_V4(NDRPOINTER): 

referent = ( 

('Data', DHCP_CLIENT_INFO_ARRAY_V4), 

) 

 

class DHCP_IP_ADDRESS_ARRAY(NDRUniConformantArray): 

item = DHCP_IP_ADDRESS 

 

class LPDHCP_IP_ADDRESS_ARRAY(NDRPOINTER): 

referent = ( 

('Data', DHCP_IP_ADDRESS_ARRAY), 

) 

 

class DHCP_IP_ARRAY(NDRSTRUCT): 

structure = ( 

('NumElements', DWORD), 

('Elements', LPDHCP_IP_ADDRESS_ARRAY), 

) 

 

class DHCP_SUBNET_STATE(NDRENUM): 

class enumItems(Enum): 

DhcpSubnetEnabled = 0 

DhcpSubnetDisabled = 1 

DhcpSubnetEnabledSwitched = 2 

DhcpSubnetDisabledSwitched = 3 

DhcpSubnetInvalidState = 4 

 

class DHCP_SUBNET_INFO(NDRSTRUCT): 

structure = ( 

('SubnetAddress', DHCP_IP_ADDRESS), 

('SubnetMask', DHCP_IP_MASK), 

('SubnetName', LPWSTR), 

('SubnetComment', LPWSTR), 

('PrimaryHost', DHCP_HOST_INFO), 

('SubnetState', DHCP_SUBNET_STATE), 

) 

 

class LPDHCP_SUBNET_INFO(NDRPOINTER): 

referent = ( 

('Data', DHCP_SUBNET_INFO), 

) 

 

class DHCP_OPTION_SCOPE_TYPE(NDRENUM): 

class enumItems(Enum): 

DhcpDefaultOptions = 0 

DhcpGlobalOptions = 1 

DhcpSubnetOptions = 2 

DhcpReservedOptions = 3 

DhcpMScopeOptions = 4 

 

class DHCP_RESERVED_SCOPE(NDRSTRUCT): 

structure = ( 

('ReservedIpAddress', DHCP_IP_ADDRESS), 

('ReservedIpSubnetAddress', DHCP_IP_ADDRESS), 

) 

 

class DHCP_OPTION_SCOPE_UNION(NDRUNION): 

union = { 

DHCP_OPTION_SCOPE_TYPE.DhcpDefaultOptions : (), 

DHCP_OPTION_SCOPE_TYPE.DhcpGlobalOptions : (), 

DHCP_OPTION_SCOPE_TYPE.DhcpSubnetOptions : ('SubnetScopeInfo', DHCP_IP_ADDRESS), 

DHCP_OPTION_SCOPE_TYPE.DhcpReservedOptions : ('ReservedScopeInfo', DHCP_RESERVED_SCOPE), 

DHCP_OPTION_SCOPE_TYPE.DhcpMScopeOptions : ('MScopeInfo', LPWSTR), 

} 

 

class DHCP_OPTION_SCOPE_INFO(NDRSTRUCT): 

structure = ( 

('ScopeType', DHCP_OPTION_SCOPE_TYPE), 

('ScopeInfo', DHCP_OPTION_SCOPE_UNION), 

) 

 

class LPDHCP_OPTION_SCOPE_INFO(NDRPOINTER): 

referent = ( 

('Data', DHCP_OPTION_SCOPE_INFO) 

) 

 

class DWORD_DWORD(NDRSTRUCT): 

structure = ( 

('DWord1', DWORD), 

('DWord2', DWORD), 

) 

 

class DHCP_BOOTP_IP_RANGE(NDRSTRUCT): 

structure = ( 

('StartAddress', DHCP_IP_ADDRESS), 

('EndAddress', DHCP_IP_ADDRESS), 

('BootpAllocated', ULONG), 

('MaxBootpAllowed', DHCP_IP_ADDRESS), 

('MaxBootpAllowed', ULONG ), 

) 

 

class DHCP_IP_RESERVATION_V4(NDRSTRUCT): 

structure = ( 

('ReservedIpAddress', DHCP_IP_ADDRESS), 

('ReservedForClient', DHCP_CLIENT_UID), 

('bAllowedClientTypes', BYTE), 

) 

 

class DHCP_IP_RANGE(NDRSTRUCT): 

structure = ( 

('StartAddress', DHCP_IP_ADDRESS), 

('EndAddress', DHCP_IP_ADDRESS), 

) 

 

class DHCP_IP_CLUSTER(NDRSTRUCT): 

structure = ( 

('ClusterAddress', DHCP_IP_ADDRESS), 

('ClusterMask', DWORD), 

) 

 

class DHCP_SUBNET_ELEMENT_TYPE(NDRENUM): 

class enumItems(Enum): 

DhcpIpRanges = 0 

DhcpSecondaryHosts = 1 

DhcpReservedIps = 2 

DhcpExcludedIpRanges = 3 

DhcpIpUsedClusters = 4 

DhcpIpRangesDhcpOnly = 5 

DhcpIpRangesDhcpBootp = 6 

DhcpIpRangesBootpOnly = 7 

 

class DHCP_SUBNET_ELEMENT_UNION_V5(NDRUNION): 

union = { 

DHCP_SUBNET_ELEMENT_TYPE.DhcpIpRanges : ('IpRange', DHCP_BOOTP_IP_RANGE), 

DHCP_SUBNET_ELEMENT_TYPE.DhcpSecondaryHosts : ('SecondaryHost', DHCP_HOST_INFO), 

DHCP_SUBNET_ELEMENT_TYPE.DhcpReservedIps : ('ReservedIp', DHCP_IP_RESERVATION_V4), 

DHCP_SUBNET_ELEMENT_TYPE.DhcpExcludedIpRanges : ('ExcludeIpRange', DHCP_IP_RANGE), 

DHCP_SUBNET_ELEMENT_TYPE.DhcpIpUsedClusters : ('IpUsedCluster', DHCP_IP_CLUSTER), 

} 

 

class DHCP_SUBNET_ELEMENT_DATA_V5(NDRSTRUCT): 

structure = ( 

('ElementType', DHCP_SUBNET_ELEMENT_TYPE), 

('Element', DHCP_SUBNET_ELEMENT_UNION_V5), 

) 

 

class LPDHCP_SUBNET_ELEMENT_DATA_V5(NDRUniConformantArray): 

item = DHCP_SUBNET_ELEMENT_DATA_V5 

 

class DHCP_SUBNET_ELEMENT_INFO_ARRAY_V5(NDRSTRUCT): 

structure = ( 

('NumElements', DWORD), 

('Elements', LPDHCP_SUBNET_ELEMENT_DATA_V5), 

) 

 

class LPDHCP_SUBNET_ELEMENT_INFO_ARRAY_V5(NDRPOINTER): 

referent = ( 

('Data', DHCP_SUBNET_ELEMENT_INFO_ARRAY_V5) 

) 

 

class DHCP_OPTION_DATA_TYPE(NDRENUM): 

class enumItems(Enum): 

DhcpByteOption = 0 

DhcpWordOption = 1 

DhcpDWordOption = 2 

DhcpDWordDWordOption = 3 

DhcpIpAddressOption = 4 

DhcpStringDataOption = 5 

DhcpBinaryDataOption = 6 

DhcpEncapsulatedDataOption = 7 

DhcpIpv6AddressOption = 8 

 

class DHCP_OPTION_ELEMENT_UNION(NDRUNION): 

commonHdr = ( 

('tag', DHCP_OPTION_DATA_TYPE), 

) 

union = { 

DHCP_OPTION_DATA_TYPE.DhcpByteOption : ('ByteOption', BYTE), 

DHCP_OPTION_DATA_TYPE.DhcpWordOption : ('WordOption', WORD), 

DHCP_OPTION_DATA_TYPE.DhcpDWordOption : ('DWordOption', DWORD), 

DHCP_OPTION_DATA_TYPE.DhcpDWordDWordOption : ('DWordDWordOption', DWORD_DWORD), 

DHCP_OPTION_DATA_TYPE.DhcpIpAddressOption : ('IpAddressOption', DHCP_IP_ADDRESS), 

DHCP_OPTION_DATA_TYPE.DhcpStringDataOption : ('StringDataOption', LPWSTR), 

DHCP_OPTION_DATA_TYPE.DhcpBinaryDataOption : ('BinaryDataOption', DHCP_BINARY_DATA), 

DHCP_OPTION_DATA_TYPE.DhcpEncapsulatedDataOption: ('EncapsulatedDataOption', DHCP_BINARY_DATA), 

DHCP_OPTION_DATA_TYPE.DhcpIpv6AddressOption : ('Ipv6AddressDataOption', LPWSTR), 

} 

 

class DHCP_OPTION_DATA_ELEMENT(NDRSTRUCT): 

structure = ( 

('OptionType', DHCP_OPTION_DATA_TYPE), 

('Element', DHCP_OPTION_ELEMENT_UNION), 

) 

 

class DHCP_OPTION_DATA_ELEMENT_ARRAY2(NDRUniConformantArray): 

item = DHCP_OPTION_DATA_ELEMENT 

 

class LPDHCP_OPTION_DATA_ELEMENT(NDRPOINTER): 

referent = ( 

('Data', DHCP_OPTION_DATA_ELEMENT_ARRAY2), 

) 

 

class DHCP_OPTION_DATA(NDRSTRUCT): 

structure = ( 

('NumElements', DWORD), 

('Elements', LPDHCP_OPTION_DATA_ELEMENT), 

) 

 

class DHCP_OPTION_VALUE(NDRSTRUCT): 

structure = ( 

('OptionID', DHCP_OPTION_ID), 

('Value', DHCP_OPTION_DATA), 

) 

 

class PDHCP_OPTION_VALUE(NDRPOINTER): 

referent = ( 

('Data', DHCP_OPTION_VALUE), 

) 

 

class DHCP_OPTION_VALUE_ARRAY2(NDRUniConformantArray): 

item = DHCP_OPTION_VALUE 

 

class LPDHCP_OPTION_VALUE(NDRPOINTER): 

referent = ( 

('Data', DHCP_OPTION_VALUE_ARRAY2), 

) 

 

class DHCP_OPTION_VALUE_ARRAY(NDRSTRUCT): 

structure = ( 

('NumElements', DWORD), 

('Values', LPDHCP_OPTION_VALUE), 

) 

 

class LPDHCP_OPTION_VALUE_ARRAY(NDRPOINTER): 

referent = ( 

('Data', DHCP_OPTION_VALUE_ARRAY), 

) 

 

class DHCP_ALL_OPTION_VALUES(NDRSTRUCT): 

structure = ( 

('ClassName', LPWSTR), 

('VendorName', LPWSTR), 

('IsVendor', BOOL), 

('OptionsArray', LPDHCP_OPTION_VALUE_ARRAY), 

) 

 

class OPTION_VALUES_ARRAY(NDRUniConformantArray): 

item = DHCP_ALL_OPTION_VALUES 

 

class LPOPTION_VALUES_ARRAY(NDRPOINTER): 

referent = ( 

('Data', OPTION_VALUES_ARRAY), 

) 

 

class DHCP_ALL_OPTIONS_VALUES(NDRSTRUCT): 

structure = ( 

('Flags', DWORD), 

('NumElements', DWORD), 

('Options', LPOPTION_VALUES_ARRAY), 

) 

 

class LPDHCP_ALL_OPTION_VALUES(NDRPOINTER): 

referent = ( 

('Data', DHCP_ALL_OPTIONS_VALUES), 

) 

 

################################################################################ 

# RPC CALLS 

################################################################################ 

# Interface dhcpsrv 

class DhcpGetSubnetInfo(NDRCALL): 

opnum = 2 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('SubnetAddress', DHCP_IP_ADDRESS), 

) 

 

class DhcpGetSubnetInfoResponse(NDRCALL): 

structure = ( 

('SubnetInfo', LPDHCP_SUBNET_INFO), 

('ErrorCode', ULONG), 

) 

 

class DhcpEnumSubnets(NDRCALL): 

opnum = 3 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('ResumeHandle', LPDWORD), 

('PreferredMaximum', DWORD), 

) 

 

class DhcpEnumSubnetsResponse(NDRCALL): 

structure = ( 

('ResumeHandle', LPDWORD), 

('EnumInfo', DHCP_IP_ARRAY), 

('EnumRead', DWORD), 

('EnumTotal', DWORD), 

('ErrorCode', ULONG), 

) 

 

class DhcpGetOptionValue(NDRCALL): 

opnum = 13 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('OptionID', DHCP_OPTION_ID), 

('ScopeInfo', DHCP_OPTION_SCOPE_INFO), 

) 

 

class DhcpGetOptionValueResponse(NDRCALL): 

structure = ( 

('OptionValue', PDHCP_OPTION_VALUE), 

('ErrorCode', ULONG), 

) 

 

class DhcpEnumOptionValues(NDRCALL): 

opnum = 14 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('ScopeInfo', DHCP_OPTION_SCOPE_INFO), 

('ResumeHandle', LPDWORD), 

('PreferredMaximum', DWORD), 

) 

 

class DhcpEnumOptionValuesResponse(NDRCALL): 

structure = ( 

('ResumeHandle', DWORD), 

('OptionValues', LPDHCP_OPTION_VALUE_ARRAY), 

('OptionsRead', DWORD), 

('OptionsTotal', DWORD), 

('ErrorCode', ULONG), 

) 

 

class DhcpGetClientInfoV4(NDRCALL): 

opnum = 34 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('SearchInfo', DHCP_SEARCH_INFO), 

) 

 

class DhcpGetClientInfoV4Response(NDRCALL): 

structure = ( 

('ClientInfo', LPDHCP_CLIENT_INFO_V4), 

('ErrorCode', ULONG), 

) 

 

class DhcpEnumSubnetClientsV4(NDRCALL): 

opnum = 35 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('SubnetAddress', DHCP_IP_ADDRESS), 

('ResumeHandle', DWORD), 

('PreferredMaximum', DWORD), 

) 

 

class DhcpEnumSubnetClientsV4Response(NDRCALL): 

structure = ( 

('ResumeHandle', LPDWORD), 

('ClientInfo', LPDHCP_CLIENT_INFO_ARRAY_V4), 

('ClientsRead', DWORD), 

('ClientsTotal', DWORD), 

('ErrorCode', ULONG), 

) 

 

# Interface dhcpsrv2 

 

class DhcpEnumSubnetClientsV5(NDRCALL): 

opnum = 0 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('SubnetAddress', DHCP_IP_ADDRESS), 

('ResumeHandle', LPDWORD), 

('PreferredMaximum', DWORD), 

) 

 

class DhcpEnumSubnetClientsV5Response(NDRCALL): 

structure = ( 

('ResumeHandle', DWORD), 

('ClientsInfo', LPDHCP_CLIENT_INFO_ARRAY_V5), 

('ClientsRead', DWORD), 

('ClientsTotal', DWORD), 

) 

 

class DhcpGetOptionValueV5(NDRCALL): 

opnum = 21 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('Flags', DWORD), 

('OptionID', DHCP_OPTION_ID), 

('ClassName', LPWSTR), 

('VendorName', LPWSTR), 

('ScopeInfo', DHCP_OPTION_SCOPE_INFO), 

) 

 

class DhcpGetOptionValueV5Response(NDRCALL): 

structure = ( 

('OptionValue', PDHCP_OPTION_VALUE), 

('ErrorCode', ULONG), 

) 

 

class DhcpEnumOptionValuesV5(NDRCALL): 

opnum = 22 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('Flags', DWORD), 

('ClassName', LPWSTR), 

('VendorName', LPWSTR), 

('ScopeInfo', DHCP_OPTION_SCOPE_INFO), 

('ResumeHandle', LPDWORD), 

('PreferredMaximum', DWORD), 

) 

 

class DhcpEnumOptionValuesV5Response(NDRCALL): 

structure = ( 

('ResumeHandle', DWORD), 

('OptionValues', LPDHCP_OPTION_VALUE_ARRAY), 

('OptionsRead', DWORD), 

('OptionsTotal', DWORD), 

('ErrorCode', ULONG), 

) 

 

class DhcpGetAllOptionValues(NDRCALL): 

opnum = 30 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('Flags', DWORD), 

('ScopeInfo', DHCP_OPTION_SCOPE_INFO), 

) 

 

class DhcpGetAllOptionValuesResponse(NDRCALL): 

structure = ( 

('Values', LPDHCP_ALL_OPTION_VALUES), 

('ErrorCode', ULONG), 

) 

 

class DhcpEnumSubnetElementsV5(NDRCALL): 

opnum = 38 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('SubnetAddress', DHCP_IP_ADDRESS), 

('EnumElementType', DHCP_SUBNET_ELEMENT_TYPE), 

('ResumeHandle', LPDWORD), 

('PreferredMaximum', DWORD), 

) 

 

class DhcpEnumSubnetElementsV5Response(NDRCALL): 

structure = ( 

('ResumeHandle', DWORD), 

('EnumElementInfo', LPDHCP_SUBNET_ELEMENT_INFO_ARRAY_V5), 

('ElementsRead', DWORD), 

('ElementsTotal', DWORD), 

('ErrorCode', ULONG), 

) 

 

class DhcpEnumSubnetClientsVQ(NDRCALL): 

opnum = 47 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('SubnetAddress', DHCP_IP_ADDRESS), 

('ResumeHandle', LPDWORD), 

('PreferredMaximum', DWORD), 

) 

 

class DhcpEnumSubnetClientsVQResponse(NDRCALL): 

structure = ( 

('ResumeHandle', LPDWORD), 

('ClientInfo', LPDHCP_CLIENT_INFO_ARRAY_VQ), 

('ClientsRead', DWORD), 

('ClientsTotal', DWORD), 

('ErrorCode', ULONG), 

) 

 

class DhcpV4GetClientInfo(NDRCALL): 

opnum = 123 

structure = ( 

('ServerIpAddress', DHCP_SRV_HANDLE), 

('SearchInfo', DHCP_SEARCH_INFO), 

) 

 

class DhcpV4GetClientInfoResponse(NDRCALL): 

structure = ( 

('ClientInfo', LPDHCP_CLIENT_INFO_PB), 

('ErrorCode', ULONG), 

) 

 

################################################################################ 

# OPNUMs and their corresponding structures 

################################################################################ 

OPNUMS = { 

0: (DhcpEnumSubnetClientsV5, DhcpEnumSubnetClientsV5Response), 

2: (DhcpGetSubnetInfo, DhcpGetSubnetInfoResponse), 

3: (DhcpEnumSubnets, DhcpEnumSubnetsResponse), 

13: (DhcpGetOptionValue, DhcpGetOptionValueResponse), 

14: (DhcpEnumOptionValues, DhcpEnumOptionValuesResponse), 

21: (DhcpGetOptionValueV5, DhcpGetOptionValueV5Response), 

22: (DhcpEnumOptionValuesV5, DhcpEnumOptionValuesV5Response), 

30: (DhcpGetAllOptionValues, DhcpGetAllOptionValuesResponse), 

34: (DhcpGetClientInfoV4, DhcpGetClientInfoV4Response), 

35: (DhcpEnumSubnetClientsV4, DhcpEnumSubnetClientsV4Response), 

38: (DhcpEnumSubnetElementsV5, DhcpEnumSubnetElementsV5Response), 

47: (DhcpEnumSubnetClientsVQ, DhcpEnumSubnetClientsVQResponse), 

123: (DhcpV4GetClientInfo, DhcpV4GetClientInfoResponse), 

} 

 

 

################################################################################ 

# HELPER FUNCTIONS 

################################################################################ 

def hDhcpGetClientInfoV4(dce, searchType, searchValue): 

request = DhcpGetClientInfoV4() 

 

request['ServerIpAddress'] = NULL 

request['SearchInfo']['SearchType'] = searchType 

request['SearchInfo']['SearchInfo']['tag'] = searchType 

if searchType == DHCP_SEARCH_INFO_TYPE.DhcpClientIpAddress: 

request['SearchInfo']['SearchInfo']['ClientIpAddress'] = searchValue 

783 ↛ 785line 783 didn't jump to line 785, because the condition on line 783 was never true elif searchType == DHCP_SEARCH_INFO_TYPE.DhcpClientHardwareAddress: 

# This should be a DHCP_BINARY_DATA 

request['SearchInfo']['SearchInfo']['ClientHardwareAddress'] = searchValue 

else: 

request['SearchInfo']['SearchInfo']['ClientName'] = searchValue 

 

return dce.request(request) 

 

def hDhcpGetSubnetInfo(dce, subnetaddress): 

request = DhcpGetSubnetInfo() 

 

request['ServerIpAddress'] = NULL 

request['SubnetAddress'] = subnetaddress 

resp = dce.request(request) 

 

return resp 

 

def hDhcpGetOptionValue(dce, optionID, scopetype=DHCP_OPTION_SCOPE_TYPE.DhcpDefaultOptions, options=NULL): 

request = DhcpGetOptionValue() 

 

request['ServerIpAddress'] = NULL 

request['OptionID'] = optionID 

request['ScopeInfo']['ScopeType'] = scopetype 

if scopetype != DHCP_OPTION_SCOPE_TYPE.DhcpDefaultOptions and scopetype != DHCP_OPTION_SCOPE_TYPE.DhcpGlobalOptions: 

request['ScopeInfo']['ScopeInfo']['tag'] = scopetype 

if scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpSubnetOptions: 

request['ScopeInfo']['ScopeInfo']['SubnetScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpReservedOptions: 

request['ScopeInfo']['ScopeInfo']['ReservedScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpMScopeOptions: 

request['ScopeInfo']['ScopeInfo']['MScopeInfo'] = options 

 

status = system_errors.ERROR_MORE_DATA 

while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCException as e: 

if str(e).find('ERROR_NO_MORE_ITEMS') < 0: 

raise 

resp = e.get_packet() 

return resp 

 

def hDhcpEnumOptionValues(dce, scopetype=DHCP_OPTION_SCOPE_TYPE.DhcpDefaultOptions, options=NULL, 

preferredMaximum=0xffffffff): 

request = DhcpEnumOptionValues() 

 

request['ServerIpAddress'] = NULL 

request['ScopeInfo']['ScopeType'] = scopetype 

if scopetype != DHCP_OPTION_SCOPE_TYPE.DhcpDefaultOptions and scopetype != DHCP_OPTION_SCOPE_TYPE.DhcpGlobalOptions: 

request['ScopeInfo']['ScopeInfo']['tag'] = scopetype 

if scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpSubnetOptions: 

request['ScopeInfo']['ScopeInfo']['SubnetScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpReservedOptions: 

request['ScopeInfo']['ScopeInfo']['ReservedScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpMScopeOptions: 

request['ScopeInfo']['ScopeInfo']['MScopeInfo'] = options 

request['ResumeHandle'] = NULL 

request['PreferredMaximum'] = preferredMaximum 

 

status = system_errors.ERROR_MORE_DATA 

while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCException as e: 

if str(e).find('ERROR_NO_MORE_ITEMS') < 0: 

raise 

resp = e.get_packet() 

return resp 

 

def hDhcpEnumOptionValuesV5(dce, flags=DHCP_FLAGS_OPTION_DEFAULT, classname=NULL, vendorname=NULL, 

scopetype=DHCP_OPTION_SCOPE_TYPE.DhcpDefaultOptions, options=NULL, 

preferredMaximum=0xffffffff): 

request = DhcpEnumOptionValuesV5() 

 

request['ServerIpAddress'] = NULL 

request['Flags'] = flags 

request['ClassName'] = classname 

request['VendorName'] = vendorname 

request['ScopeInfo']['ScopeType'] = scopetype 

request['ScopeInfo']['ScopeInfo']['tag'] = scopetype 

if scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpSubnetOptions: 

request['ScopeInfo']['ScopeInfo']['SubnetScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpReservedOptions: 

request['ScopeInfo']['ScopeInfo']['ReservedScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpMScopeOptions: 

request['ScopeInfo']['ScopeInfo']['MScopeInfo'] = options 

request['ResumeHandle'] = NULL 

request['PreferredMaximum'] = preferredMaximum 

 

status = system_errors.ERROR_MORE_DATA 

while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCException as e: 

if str(e).find('ERROR_NO_MORE_ITEMS') < 0: 

raise 

resp = e.get_packet() 

return resp 

 

def hDhcpGetOptionValueV5(dce, option_id, flags=DHCP_FLAGS_OPTION_DEFAULT, classname=NULL, vendorname=NULL, 

scopetype=DHCP_OPTION_SCOPE_TYPE.DhcpDefaultOptions, options=NULL): 

request = DhcpGetOptionValueV5() 

 

request['ServerIpAddress'] = NULL 

request['Flags'] = flags 

request['OptionID'] = option_id 

request['ClassName'] = classname 

request['VendorName'] = vendorname 

request['ScopeInfo']['ScopeType'] = scopetype 

request['ScopeInfo']['ScopeInfo']['tag'] = scopetype 

893 ↛ 895line 893 didn't jump to line 895, because the condition on line 893 was never false if scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpSubnetOptions: 

request['ScopeInfo']['ScopeInfo']['SubnetScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpReservedOptions: 

request['ScopeInfo']['ScopeInfo']['ReservedScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpMScopeOptions: 

request['ScopeInfo']['ScopeInfo']['MScopeInfo'] = options 

 

status = system_errors.ERROR_MORE_DATA 

901 ↛ exitline 901 didn't return from function 'hDhcpGetOptionValueV5', because the condition on line 901 was never false while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCException as e: 

if str(e).find('ERROR_NO_MORE_ITEMS') < 0: 

raise 

resp = e.get_packet() 

return resp 

 

def hDhcpGetAllOptionValues(dce, scopetype=DHCP_OPTION_SCOPE_TYPE.DhcpDefaultOptions, options=NULL): 

request = DhcpGetAllOptionValues() 

 

request['ServerIpAddress'] = NULL 

request['Flags'] = NULL 

request['ScopeInfo']['ScopeType'] = scopetype 

request['ScopeInfo']['ScopeInfo']['tag'] = scopetype 

if scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpSubnetOptions: 

request['ScopeInfo']['ScopeInfo']['SubnetScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpReservedOptions: 

request['ScopeInfo']['ScopeInfo']['ReservedScopeInfo'] = options 

elif scopetype == DHCP_OPTION_SCOPE_TYPE.DhcpMScopeOptions: 

request['ScopeInfo']['ScopeInfo']['MScopeInfo'] = options 

 

status = system_errors.ERROR_MORE_DATA 

while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCException as e: 

if str(e).find('ERROR_NO_MORE_ITEMS') < 0: 

raise 

resp = e.get_packet() 

return resp 

 

def hDhcpEnumSubnets(dce, preferredMaximum=0xffffffff): 

request = DhcpEnumSubnets() 

 

request['ServerIpAddress'] = NULL 

request['ResumeHandle'] = NULL 

request['PreferredMaximum'] = preferredMaximum 

status = system_errors.ERROR_MORE_DATA 

while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCException as e: 

if str(e).find('STATUS_MORE_ENTRIES') < 0: 

raise 

resp = e.get_packet() 

return resp 

 

def hDhcpEnumSubnetClientsVQ(dce, preferredMaximum=0xffffffff): 

request = DhcpEnumSubnetClientsVQ() 

 

request['ServerIpAddress'] = NULL 

request['SubnetAddress'] = NULL 

request['ResumeHandle'] = NULL 

request['PreferredMaximum'] = preferredMaximum 

status = system_errors.ERROR_MORE_DATA 

while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCException as e: 

if str(e).find('STATUS_MORE_ENTRIES') < 0: 

raise 

resp = e.get_packet() 

return resp 

 

def hDhcpEnumSubnetClientsV4(dce, preferredMaximum=0xffffffff): 

request = DhcpEnumSubnetClientsV4() 

 

request['ServerIpAddress'] = NULL 

request['SubnetAddress'] = NULL 

request['ResumeHandle'] = NULL 

request['PreferredMaximum'] = preferredMaximum 

status = system_errors.ERROR_MORE_DATA 

while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCException as e: 

if str(e).find('STATUS_MORE_ENTRIES') < 0: 

raise 

resp = e.get_packet() 

return resp 

 

def hDhcpEnumSubnetClientsV5(dce, subnetAddress=0, preferredMaximum=0xffffffff): 

request = DhcpEnumSubnetClientsV5() 

 

request['ServerIpAddress'] = NULL 

request['SubnetAddress'] = subnetAddress 

request['ResumeHandle'] = NULL 

request['PreferredMaximum'] = preferredMaximum 

status = system_errors.ERROR_MORE_DATA 

992 ↛ exitline 992 didn't return from function 'hDhcpEnumSubnetClientsV5', because the condition on line 992 was never false while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCSessionError as e: 

996 ↛ 998line 996 didn't jump to line 998, because the condition on line 996 was never false if str(e).find('STATUS_MORE_ENTRIES') < 0: 

raise 

resp = e.get_packet() 

return resp 

 

def hDhcpEnumSubnetElementsV5(dce, subnet_address, element_type=DHCP_SUBNET_ELEMENT_TYPE.DhcpIpRanges, preferredMaximum=0xffffffff): 

request = DhcpEnumSubnetElementsV5() 

 

request['ServerIpAddress'] = NULL 

request['SubnetAddress'] = subnet_address 

request['EnumElementType'] = element_type 

request['ResumeHandle'] = NULL 

request['PreferredMaximum'] = preferredMaximum 

 

status = system_errors.ERROR_MORE_DATA 

while status == system_errors.ERROR_MORE_DATA: 

try: 

resp = dce.request(request) 

except DCERPCException as e: 

if str(e).find('ERROR_NO_MORE_ITEMS') < 0: 

raise 

resp = e.get_packet() 

return resp