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from enum import IntEnum
class MessageType(IntEnum):
'''DHCP message types, see RFC 2131 table 2.'''
DISCOVER = 1
OFFER = 2
REQUEST = 3
DECLINE = 4
ACK = 5
NAK = 6
RELEASE = 7
INFORM = 8
class Option(IntEnum):
'''DHCP options and parameters.
These constants are used for two purposes:
- Requesting configuration values from the DHCP server.
In this case, they're passed in the `PARAMETER_LIST` request option.
Not all values are valid for parameter requests:
- `PAD` is only used as padding when decoding server-sent options,
- `PARAMETER_LIST` is only sent from client and cannot be requested,
- `END` is used as a marker when decoding server-sent options.
- Reading responses.
`Option` numbers are used to parse DHCP options sent by the server.
They are translated to their name by the client and stored in leases.
'''
PAD = 0
SUBNET_MASK = 1
TIME_OFFSET = 2
ROUTER = 3
TIME_SERVER = 4
IEN_NAME_SERVER = 5 # prehistoric DNS
# this should be DOMAIN_NAME_SERVER but it's often used & shorted this way
NAME_SERVER = 6 # plain old DNS
LOG_SERVER = 7
COOKIE_SERVER = 8
LPR_SERVER = 9
IMPRESS_SERVER = 10
RESOURCE_LOCATION_SERVER = 11
HOST_NAME = 12
BOOT_FILE_SIZE = 13
MERIT_DUMP_FILE = 14
DOMAIN_NAME = 15
SWAP_SERVER = 16
ROOT_PATH = 17
EXTENSIONS_PATH = 18
IP_FORWARDING = 19
NON_LOCAL_SOURCE_ROUTING = 20
POLICY_FILTER = 21
MAX_DATAGRAM_REASSEMBLY = 22
DEFAULT_TTL = 23
PATH_MTU_AGING_TIMEOUT = 24
PATH_MTU_PLATEAU_TABLE = 25
INTERFACE_MTU = 26
ALL_SUBNETS_LOCAL = 27
BROADCAST_ADDRESS = 28
PERFORM_MASK_DISCOVERY = 29
MASK_SUPPLIER = 30
PERFORM_ROUTER_DISCOVERY = 31
ROUTER_SOLICITATION_ADDRESS = 32
STATIC_ROUTE = 33
TRAILER_ENCAPSULATION = 34
ARP_CACHE_TIMEOUT = 35
ETHERNET_ENCAPSULATION = 36
TCP_DEFAULT_TTL = 37
TCP_KEEPALIVE_INTERVAL = 38
TCP_KEEPALIVE_GARBAGE = 39
NIS_DOMAIN = 40
NIS_SERVERS = 41
NTP_SERVERS = 42
VENDOR_SPECIFIC_INFORMATION = 43
NETBIOS_NAME_SERVER = 44
NETBIOS_DDG_SERVER = 45
NETBIOS_NODE_TYPE = 46
NETBIOS_SCOPE = 47
X_WINDOW_FONT_SERVER = 48
X_WINDOW_DISPLAY_MANAGER = 49
REQUESTED_IP = 50
LEASE_TIME = 51
OPTION_OVERLOAD = 52
MESSAGE_TYPE = 53
SERVER_ID = 54
PARAMETER_LIST = 55
MESSAGE = 56
MAX_MSG_SIZE = 57
RENEWAL_TIME = 58
REBINDING_TIME = 59
VENDOR_ID = 60
CLIENT_ID = 61
NETWARE_IP_DOMAIN = 62
NETWARE_IP_OPTION = 63
NIS_PLUS_DOMAIN = 64
NIS_PLUS_SERVERS = 65
TFTP_SERVER_NAME = 66
BOOTFILE_NAME = 67
MOBILE_IP_HOME_AGENT = 68
SMTP_SERVER = 69
POP3_SERVER = 70
NNTP_SERVER = 71
DEFAULT_WWW_SERVER = 72
DEFAULT_FINGER_SERVER = 73
DEFAULT_IRC_SERVER = 74
STREETTALK_SERVER = 75
STDA_SERVER = 76
USER_CLASS_INFORMATION = 77
SLP_DIRECTORY_AGENT = 78
SLP_SERVICE_SCOPE = 79
RAPID_COMMIT = 80
CLIENT_FQDN = 81
RELAY_AGENT_INFORMATION = 82
INTERNET_STORAGE_NAME_SERVICE = 83
# 84 is unused
NDS_SERVERS = 85
NDS_TREE_NAME = 86
NDS_CONTEXT = 87
BCMCS_CONTROLLER_DOMAIN = 88
BCMS_CONTROLLER_IP = 89
AUTHENTICATION = 90
LQ_CLIENT_LAST_TRANSACTION = 91
LQ_ASSOCIATED_IP = 92
CLIENT_SYSTEM_ARCHITECTURE_TYPE = 93
CLIENT_NETWORK_INTERFACE_IDENTIFIER = 94
LDAP_SERVERS = 95
# 96 is unused
PXE_CLIENT_ID = 97
OPEN_GROUP_USER_AUTH = 98
GEOCONF_CIVIC = 99
POSIX_TIMEZONE = 100
TZDB_TIMEZONE = 101
# 102 to 107 are unused
IPV6_ONLY_PREFERRED = 108
DHCP4TO6_S46_SADDR = 109
# 110 & 111 are unused
NETINFO_PARENT_SERVER_ADDR = 112
NETINFO_PARENT_SERVER_TAG = 113
DHCP_CAPTIVE_PORTAL = 114
# 115 is unused
AUTO_CONFIGURE = 116
NAME_SERVICE_SEARCH = 117
SUBNET_SELECTION = 118
DOMAIN_SEARCH = 119
SIP_SERVERS = 120
CLASSLESS_STATIC_ROUTE = 121
CABLELABS_CLIENT_CONFIG = 122
GEOCONF = 123
VENDOR_IDENTIFYING_CLASS = 124
VENDOR_IDENTIFYING_OPTS = 125
# 126 & 127 are unused
MCNS_SECURITY_SERVER = 128
# 129 to 135 are unused
PANA_AGENT = 136
LOST_SERVER = 137
CAPWAP_AC_V4 = 138
MOS_ADDR = 139
MOS_FQDN = 140
SIP_UA_CS_DOMAINS = 141
ANDSF_V4 = 142
SZTP_REDIRECT = 143
GEOLOC = 144
FORCERENEW_NONCE_CAPABLE = 145
RDNSS_SELECTION = 146
DOTS_REFERENCE_IDENTIFIER = 147
DOTS_ADDR = 148
# 149 is unused
TFTP_SERVER_ADDR = 150
STATUS_CODE = 151
BASE_TIME = 152
STATE_START_TIME = 153
QUERY_START_TIME = 154
QUERY_END_TIME = 155
DHCP_STATE = 156
DATA_SOURCE = 157
PCP_SERVER = 158
PORT_PARAMS = 159
OLD_CAPTIVE_PORTAL = 160
MUD_URL = 161
CISCO_REQUESTED_HOST_NAME = 162
CISCO_LAST_TRANSACTION_TIME = 163
# 164 to 184 are unused
VPN_ID = 185
# 186 to 207 are unused
PXELINUX_MAGIC = 208
PXELINUX_CONFIG_FILE = 209
PXELINUX_PATH_PREFIX = 210
PXELINUX_REBOOT_TIME = 211
DHCP_6RD = 212
ACCESS_DOMAIN_NAME = 213
# 214 to 219 seem unused
SUBNET_ALLOC = 220
VIRTUAL_SUBNET_SELECTION = 221
PRIVATE_CLASSIC_ROUTE_MS = 249
CISCO_AUTO_CONFIGURE = 251
PRIVATE_PROXY_AUTODISCOVERY = 252
END = 255