(self,
iface=None, # type: Optional[Union[str, NetworkInterface]]
type=ETH_P_ALL, # type: int
promisc=None, # type: Optional[Any]
filter=None, # type: Optional[Any]
nofilter=0, # type: int
monitor=None, # type: Optional[Any]
)
| 205 | desc = "read/write packets at layer 2 using Linux PF_PACKET sockets" |
| 206 | |
| 207 | def __init__(self, |
| 208 | iface=None, # type: Optional[Union[str, NetworkInterface]] |
| 209 | type=ETH_P_ALL, # type: int |
| 210 | promisc=None, # type: Optional[Any] |
| 211 | filter=None, # type: Optional[Any] |
| 212 | nofilter=0, # type: int |
| 213 | monitor=None, # type: Optional[Any] |
| 214 | ): |
| 215 | # type: (...) -> None |
| 216 | self.iface = network_name(iface or conf.iface) |
| 217 | self.type = type |
| 218 | self.promisc = conf.sniff_promisc if promisc is None else promisc |
| 219 | self.ins = socket.socket( |
| 220 | socket.AF_PACKET, socket.SOCK_RAW, socket.htons(type)) |
| 221 | self.ins.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 0) |
| 222 | if not nofilter: |
| 223 | if conf.except_filter: |
| 224 | if filter: |
| 225 | filter = "(%s) and not (%s)" % (filter, conf.except_filter) |
| 226 | else: |
| 227 | filter = "not (%s)" % conf.except_filter |
| 228 | if filter is not None: |
| 229 | try: |
| 230 | attach_filter(self.ins, filter, self.iface) |
| 231 | except (ImportError, Scapy_Exception) as ex: |
| 232 | raise Scapy_Exception("Cannot set filter: %s" % ex) |
| 233 | if self.promisc: |
| 234 | set_promisc(self.ins, self.iface) |
| 235 | self.ins.bind((self.iface, type)) |
| 236 | _flush_fd(self.ins.fileno()) |
| 237 | self.ins.setsockopt( |
| 238 | socket.SOL_SOCKET, |
| 239 | socket.SO_RCVBUF, |
| 240 | conf.bufsize |
| 241 | ) |
| 242 | # Receive Auxiliary Data (VLAN tags) |
| 243 | try: |
| 244 | self.ins.setsockopt(SOL_PACKET, PACKET_AUXDATA, 1) |
| 245 | self.ins.setsockopt(socket.SOL_SOCKET, SO_TIMESTAMPNS, 1) |
| 246 | self.auxdata_available = True |
| 247 | except OSError: |
| 248 | # Note: Auxiliary Data is only supported since |
| 249 | # Linux 2.6.21 |
| 250 | msg = "Your Linux Kernel does not support Auxiliary Data!" |
| 251 | log_runtime.info(msg) |
| 252 | if not isinstance(self, L2ListenSocket): |
| 253 | self.outs = self.ins # type: socket.socket |
| 254 | self.outs.setsockopt( |
| 255 | socket.SOL_SOCKET, |
| 256 | socket.SO_SNDBUF, |
| 257 | conf.bufsize |
| 258 | ) |
| 259 | else: |
| 260 | self.outs = None # type: ignore |
| 261 | sa_ll = self.ins.getsockname() |
| 262 | if sa_ll[3] in conf.l2types: |
| 263 | self.LL = conf.l2types.num2layer[sa_ll[3]] |
| 264 | self.lvl = 2 |
no test coverage detected