| #!/usr/bin/env python |
| # |
| # Copyright (c) 2018, The OpenThread Authors. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # 3. Neither the name of the copyright holder nor the |
| # names of its contributors may be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| import sys |
| import time |
| import re |
| import random |
| import weakref |
| import subprocess |
| import socket |
| import asyncore |
| import inspect |
| |
| #---------------------------------------------------------------------------------------------------------------------- |
| # wpantund properties |
| |
| WPAN_STATE = 'NCP:State' |
| WPAN_NAME = 'Network:Name' |
| WPAN_PANID = 'Network:PANID' |
| WPAN_XPANID = 'Network:XPANID' |
| WPAN_KEY = 'Network:Key' |
| WPAN_CHANNEL = 'NCP:Channel' |
| WPAN_HW_ADDRESS = 'NCP:HardwareAddress' |
| WPAN_EXT_ADDRESS = 'NCP:ExtendedAddress' |
| WPAN_POLL_INTERVAL = 'NCP:SleepyPollInterval' |
| WPAN_NODE_TYPE = 'Network:NodeType' |
| WPAN_ROLE = 'Network:Role' |
| WPAN_PARTITION_ID = 'Network:PartitionId' |
| WPAN_NCP_VERSION = 'NCP:Version' |
| WPAN_NCP_MCU_POWER_STATE = "NCP:MCUPowerState" |
| WPAN_NETWORK_ALLOW_JOIN = 'com.nestlabs.internal:Network:AllowingJoin' |
| WPAN_NETWORK_PASSTHRU_PORT = 'com.nestlabs.internal:Network:PassthruPort' |
| |
| WPAN_IP6_LINK_LOCAL_ADDRESS = "IPv6:LinkLocalAddress" |
| WPAN_IP6_MESH_LOCAL_ADDRESS = "IPv6:MeshLocalAddress" |
| WPAN_IP6_MESH_LOCAL_PREFIX = "IPv6:MeshLocalPrefix" |
| WPAN_IP6_ALL_ADDRESSES = "IPv6:AllAddresses" |
| WPAN_IP6_MULTICAST_ADDRESSES = "IPv6:MulticastAddresses" |
| |
| WPAN_THREAD_RLOC16 = "Thread:RLOC16" |
| WPAN_THREAD_ROUTER_ID = "Thread:RouterID" |
| WPAN_THREAD_LEADER_ADDRESS = "Thread:Leader:Address" |
| WPAN_THREAD_LEADER_ROUTER_ID = "Thread:Leader:RouterID" |
| WPAN_THREAD_LEADER_WEIGHT = "Thread:Leader:Weight" |
| WPAN_THREAD_LEADER_LOCAL_WEIGHT = "Thread:Leader:LocalWeight" |
| WPAN_THREAD_LEADER_NETWORK_DATA = "Thread:Leader:NetworkData" |
| WPAN_THREAD_STABLE_LEADER_NETWORK_DATA = "Thread:Leader:StableNetworkData" |
| WPAN_THREAD_NETWORK_DATA = "Thread:NetworkData" |
| WPAN_THREAD_CHILD_TABLE = "Thread:ChildTable" |
| WPAN_THREAD_CHILD_TABLE_ASVALMAP = "Thread:ChildTable:AsValMap" |
| WPAN_THREAD_CHILD_TABLE_ADDRESSES = "Thread:ChildTable:Addresses" |
| WPAN_THREAD_NEIGHBOR_TABLE = "Thread:NeighborTable" |
| WPAN_THREAD_NEIGHBOR_TABLE_ASVALMAP = "Thread:NeighborTable:AsValMap" |
| WPAN_THREAD_ROUTER_TABLE = "Thread:RouterTable" |
| WPAN_THREAD_ROUTER_TABLE_ASVALMAP = "Thread:RouterTable:AsValMap" |
| WPAN_THREAD_NETWORK_DATA_VERSION = "Thread:NetworkDataVersion" |
| WPAN_THREAD_STABLE_NETWORK_DATA = "Thread:StableNetworkData" |
| WPAN_THREAD_STABLE_NETWORK_DATA_VERSION = "Thread:StableNetworkDataVersion" |
| WPAN_THREAD_PREFERRED_ROUTER_ID = "Thread:PreferredRouterID" |
| WPAN_THREAD_COMMISSIONER_ENABLED = "Thread:Commissioner:Enabled" |
| WPAN_THREAD_DEVICE_MODE = "Thread:DeviceMode" |
| WPAN_THREAD_OFF_MESH_ROUTES = "Thread:OffMeshRoutes" |
| WPAN_THREAD_ON_MESH_PREFIXES = "Thread:OnMeshPrefixes" |
| WPAN_THREAD_ROUTER_ROLE_ENABLED = "Thread:RouterRole:Enabled" |
| WPAN_THREAD_CONFIG_FILTER_RLOC_ADDRESSES = "Thread:Config:FilterRLOCAddresses" |
| WPAN_THREAD_ACTIVE_DATASET = "Thread:ActiveDataset" |
| WPAN_THREAD_ACTIVE_DATASET_ASVALMAP = "Thread:ActiveDataset:AsValMap" |
| WPAN_THREAD_PENDING_DATASET = "Thread:PendingDataset" |
| WPAN_THREAD_PENDING_DATASET_ASVALMAP = "Thread:PendingDataset:AsValMap" |
| |
| WPAN_OT_LOG_LEVEL = "OpenThread:LogLevel" |
| WPAN_OT_STEERING_DATA_ADDRESS = "OpenThread:SteeringData:Address" |
| WPAN_OT_STEERING_DATA_SET_WHEN_JOINABLE = "OpenThread:SteeringData:SetWhenJoinable" |
| WPAN_OT_MSG_BUFFER_COUNTERS = "OpenThread:MsgBufferCounters" |
| WPAN_OT_MSG_BUFFER_COUNTERS_AS_STRING = "OpenThread:MsgBufferCounters:AsString" |
| WPAN_OT_DEBUG_TEST_ASSERT = "OpenThread:Debug:TestAssert" |
| WPAN_OT_DEBUG_TEST_WATCHDOG = "OpenThread:Debug:TestWatchdog" |
| |
| WPAN_NCP_COUNTER_ALL_MAC = "NCP:Counter:AllMac" |
| WPAN_NCP_COUNTER_ALL_MAC_ASVALMAP = "NCP:Counter:AllMac:AsValMap" |
| |
| WPAN_MAC_WHITELIST_ENABLED = "MAC:Whitelist:Enabled" |
| WPAN_MAC_WHITELIST_ENTRIES = "MAC:Whitelist:Entries" |
| WPAN_MAC_WHITELIST_ENTRIES_ASVALMAP = "MAC:Whitelist:Entries:AsValMap" |
| WPAN_MAC_BLACKLIST_ENABLED = "MAC:Blacklist:Enabled" |
| WPAN_MAC_BLACKLIST_ENTRIES = "MAC:Blacklist:Entries" |
| WPAN_MAC_BLACKLIST_ENTRIES_ASVALMAP = "MAC:Blacklist:Entries:AsValMap" |
| |
| WPAN_JAM_DETECTION_STATUS = "JamDetection:Status" |
| WPAN_JAM_DETECTION_ENABLE = "JamDetection:Enable" |
| WPAN_JAM_DETECTION_RSSI_THRESHOLD = "JamDetection:RssiThreshold" |
| WPAN_JAM_DETECTION_WINDOW = "JamDetection:Window" |
| WPAN_JAM_DETECTION_BUSY_PERIOD = "JamDetection:BusyPeriod" |
| WPAN_JAM_DETECTION_DEBUG_HISTORY_BITMAP = "JamDetection:Debug:HistoryBitmap" |
| |
| WPAN_CHANNEL_MONITOR_SAMPLE_INTERVAL = "ChannelMonitor:SampleInterval" |
| WPAN_CHANNEL_MONITOR_RSSI_THRESHOLD = "ChannelMonitor:RssiThreshold" |
| WPAN_CHANNEL_MONITOR_SAMPLE_WINDOW = "ChannelMonitor:SampleWindow" |
| WPAN_CHANNEL_MONITOR_SAMPLE_COUNT = "ChannelMonitor:SampleCount" |
| WPAN_CHANNEL_MONITOR_CHANNEL_QUALITY = "ChannelMonitor:ChannelQuality" |
| WPAN_CHANNEL_MONITOR_CHANNEL_QUALITY_ASVALMAP = "ChannelMonitor:ChannelQuality:AsValMap" |
| |
| WPAN_CHANNEL_MANAGER_NEW_CHANNEL = "ChannelManager:NewChannel" |
| WPAN_CHANNEL_MANAGER_DELAY = "ChannelManager:Delay" |
| WPAN_CHANNEL_MANAGER_CHANNEL_SELECT = "ChannelManager:ChannelSelect" |
| WPAN_CHANNEL_MANAGER_AUTO_SELECT_ENABLED = "ChannelManager:AutoSelect:Enabled" |
| WPAN_CHANNEL_MANAGER_AUTO_SELECT_INTERVAL = "ChannelManager:AutoSelect:Interval" |
| WPAN_CHANNEL_MANAGER_SUPPORTED_CHANNEL_MASK = "ChannelManager:SupportedChannelMask" |
| WPAN_CHANNEL_MANAGER_FAVORED_CHANNEL_MASK = "ChannelManager:FavoredChannelMask" |
| |
| #---------------------------------------------------------------------------------------------------------------------- |
| # Valid state values |
| |
| STATE_UNINITIALIZED = '"uninitialized"' |
| STATE_FAULT = '"uninitialized:fault"' |
| STATE_UPGRADING = '"uninitialized:upgrading"' |
| STATE_DEEP_SLEEP = '"offline:deep-sleep"' |
| STATE_OFFLINE = '"offline"' |
| STATE_COMMISSIONED = '"offline:commissioned"' |
| STATE_ASSOCIATING = '"associating"' |
| STATE_CREDENTIALS_NEEDED = '"associating:credentials-needed"' |
| STATE_ASSOCIATED = '"associated"' |
| STATE_ISOLATED = '"associated:no-parent"' |
| STATE_NETWAKE_ASLEEP = '"associated:netwake-asleep"' |
| STATE_NETWAKE_WAKING = '"associated:netwake-waking"' |
| |
| #----------------------------------------------------------------------------------------------------------------------- |
| # MCU Power state from `WPAN_NCP_MCU_POWER_STATE` |
| |
| MCU_POWER_STATE_ON = '"on"' |
| MCU_POWER_STATE_LOW_POWER = '"low-power"' |
| MCU_POWER_STATE_OFF = '"off"' |
| |
| #----------------------------------------------------------------------------------------------------------------------- |
| # Node types (from `WPAN_NODE_TYPE` property) |
| |
| NODE_TYPE_UNKNOWN = '"unknown"' |
| NODE_TYPE_LEADER = '"leader"' |
| NODE_TYPE_ROUTER = '"router"' |
| NODE_TYPE_END_DEVICE = '"end-device"' |
| NODE_TYPE_SLEEPY_END_DEVICE = '"sleepy-end-device"' |
| NODE_TYPE_COMMISSIONER = '"commissioner"' |
| NODE_TYPE_NEST_LURKER = '"nl-lurker"' |
| |
| #----------------------------------------------------------------------------------------------------------------------- |
| |
| # Node types used by `Node.join()` |
| |
| JOIN_TYPE_ROUTER = 'r' |
| JOIN_TYPE_END_DEVICE = 'e' |
| JOIN_TYPE_SLEEPY_END_DEVICE = 's' |
| |
| #----------------------------------------------------------------------------------------------------------------------- |
| |
| def _log(text, new_line=True, flush=True): |
| sys.stdout.write(text) |
| if new_line: |
| sys.stdout.write('\n') |
| if flush: |
| sys.stdout.flush() |
| |
| #----------------------------------------------------------------------------------------------------------------------- |
| # Node class |
| |
| class Node(object): |
| """ A wpantund OT NCP instance """ |
| |
| _VERBOSE = False # defines the default verbosity setting (can be changed per `Node`) |
| _SPEED_UP_FACTOR = 1 # defines the default time speed up factor |
| |
| # path to `wpantund`, `wpanctl` and `ot-ncp-ftd` code |
| _WPANTUND = '/usr/local/sbin/wpantund' |
| _WPANCTL = '/usr/local/bin/wpanctl' |
| _OT_NCP_FTD = '../../examples/apps/ncp/ot-ncp-ftd' |
| |
| _TUND_LOG_TO_FILE = True # determines if the wpantund logs are saved in file or sent to stdout |
| _TUND_LOG_FNAME = 'wpantund-logs' # name of wpantund log file (if # name of wpantund _TUND_LOG_TO_FILE is True) |
| |
| # interface name |
| _INTFC_NAME_PREFIX = 'utun' if sys.platform == 'darwin' else 'wpan' |
| _START_INDEX = 4 if sys.platform == 'darwin' else 1 |
| |
| _cur_index = _START_INDEX |
| _all_nodes = weakref.WeakSet() |
| |
| def __init__(self, verbose=_VERBOSE): |
| """Creates a new `Node` instance""" |
| |
| index = Node._cur_index |
| Node._cur_index += 1 |
| |
| self._index = index |
| self._interface_name = self._INTFC_NAME_PREFIX + str(index) |
| self._verbose = verbose |
| |
| ncp_socket_path = 'system:{} {} {}'.format(self._OT_NCP_FTD, index, self._SPEED_UP_FACTOR) |
| |
| cmd = self._WPANTUND + \ |
| ' -o Config:NCP:SocketPath \"{}\"'.format(ncp_socket_path) + \ |
| ' -o Config:TUN:InterfaceName {}'.format(self._interface_name) + \ |
| ' -o Config:NCP:DriverName spinel' + \ |
| ' -o Daemon:SyslogMask \"all -debug\"' |
| |
| if Node._TUND_LOG_TO_FILE: |
| self._tund_log_file = open(self._TUND_LOG_FNAME + str(index) + '.log', 'wb') |
| else: |
| self._tund_log_file = None |
| |
| if self._verbose: |
| _log('$ Node{}.__init__() cmd: {}'.format(index, cmd)) |
| |
| self._wpantund_process = subprocess.Popen(cmd, shell=True, stderr=self._tund_log_file) |
| |
| self._wpanctl_cmd = self._WPANCTL + ' -I ' + self._interface_name + ' ' |
| |
| self._recvers = weakref.WeakValueDictionary() # map from local_port to `AsyncReceiver` object |
| Node._all_nodes.add(self) |
| |
| def __del__(self): |
| self._wpantund_process.terminate() |
| self._tund_log_file.close() |
| |
| def __repr__(self): |
| return 'Node (index={}, interface_name={})'.format(self._index, self._interface_name) |
| |
| @property |
| def index(self): |
| return self._index |
| |
| @property |
| def interface_name(self): |
| return self._interface_name |
| |
| @property |
| def tund_log_file(self): |
| return self._tund_log_file |
| |
| #------------------------------------------------------------------------------------------------------------------ |
| # Executing a `wpanctl` command |
| |
| def wpanctl(self, cmd): |
| """ Runs a wpanctl command on the given wpantund/OT-NCP instance and returns the output """ |
| |
| if self._verbose: |
| _log('$ Node{}.wpanctl(\'{}\')'.format(self._index, cmd), new_line=False) |
| |
| result = subprocess.check_output(self._wpanctl_cmd + cmd, shell=True, stderr=subprocess.STDOUT) |
| |
| if len(result) >= 1 and result[-1] == '\n': # remove the last char if it is '\n', |
| result = result[:-1] |
| |
| if self._verbose: |
| if '\n' in result: |
| _log(':') |
| for line in result.splitlines(): |
| _log(' ' + line) |
| else: |
| _log(' -> \'{}\''.format(result)) |
| |
| return result |
| |
| #------------------------------------------------------------------------------------------------------------------ |
| # APIs matching `wpanctl` commands. |
| |
| def get(self, prop_name, value_only=True): |
| return self.wpanctl('get ' + ('-v ' if value_only else '') + prop_name) |
| |
| def set(self, prop_name, value, binary_data=False): |
| return self._update_prop('set', prop_name, value, binary_data) |
| |
| def add(self, prop_name, value, binary_data=False): |
| return self._update_prop('add', prop_name, value, binary_data) |
| |
| def remove(self, prop_name, value, binary_data=False): |
| return self._update_prop('remove', prop_name, value, binary_data) |
| |
| def _update_prop(self, action, prop_name, value, binary_data): |
| return self.wpanctl(action + ' ' + prop_name + ' ' + ('-d ' if binary_data else '') + |
| '-v ' + value) # use -v to handle values starting with `-`. |
| |
| def reset(self): |
| return self.wpanctl('reset') |
| |
| def status(self): |
| return self.wpanctl('status') |
| |
| def leave(self): |
| return self.wpanctl('leave') |
| |
| def form(self, name, channel=None, node_type=None): |
| return self.wpanctl('form \"' + name + '\"' + |
| (' -c {}'.format(channel) if channel is not None else '') + |
| (' -T {}'.format(node_type) if node_type is not None else '')) |
| |
| def join(self, name, channel=None, node_type=None, panid=None, xpanid=None): |
| return self.wpanctl('join \"' + name + '\"' + |
| (' -c {}'.format(channel) if channel is not None else '') + |
| (' -T {}'.format(node_type) if node_type is not None else '') + |
| (' -p {}'.format(panid) if panid is not None else '') + |
| (' -x {}'.format(xpanid) if xpanid is not None else '')) |
| |
| def active_scan(self, channel=None): |
| return self.wpanctl('scan' + |
| (' -c {}'.format(channel) if channel is not None else '')) |
| |
| def energy_scan(self, channel=None): |
| return self.wpanctl('scan -e' + |
| (' -c {}'.format(channel) if channel is not None else '')) |
| |
| def discover_scan(self, channel=None, joiner_only=False, enable_filtering=False, panid_filter=None): |
| return self.wpanctl('scan -d' + |
| (' -c {}'.format(channel) if channel is not None else '') + |
| (' -j' if joiner_only else '') + |
| (' -e' if enable_filtering else '') + |
| (' -p {}'.format(panid_filter) if panid_filter is not None else '')) |
| |
| def permit_join(self, duration_sec=None, port=None, udp=True, tcp=True): |
| if not udp and not tcp: # incorrect use! |
| return '' |
| traffic_type = '' |
| if udp and not tcp: |
| traffic_type = ' --udp' |
| if tcp and not udp: |
| traffic_type = ' --tcp' |
| if port is not None and duration_sec is None: |
| duration_sec = '240' |
| |
| return self.wpanctl('permit-join' + |
| (' {}'.format(duration_sec) if duration_sec is not None else '') + |
| (' {}'.format(port) if port is not None else '') + |
| traffic_type) |
| |
| def config_gateway(self, prefix, default_route=False, priority=None): |
| return self.wpanctl('config-gateway ' + prefix + |
| (' -d' if default_route else '') + |
| (' -P {}'.format(priority) if priority is not None else '')) |
| |
| def add_route(self, route_prefix, prefix_len_in_bytes=None, priority=None): |
| """route priority [(>0 for high, 0 for medium, <0 for low)]""" |
| return self.wpanctl('add-route ' + route_prefix + |
| (' -l {}'.format(prefix_len_in_bytes) if prefix_len_in_bytes is not None else '') + |
| (' -p {}'.format(priority) if priority is not None else '')) |
| |
| def remove_route(self, route_prefix, prefix_len_in_bytes=None, priority=None): |
| """route priority [(>0 for high, 0 for medium, <0 for low)]""" |
| return self.wpanctl('remove-route ' + route_prefix + |
| (' -l {}'.format(prefix_len_in_bytes) if prefix_len_in_bytes is not None else '') + |
| (' -p {}'.format(priority) if priority is not None else '')) |
| |
| #------------------------------------------------------------------------------------------------------------------ |
| # Helper methods |
| |
| def is_associated(self): |
| return self.get(WPAN_STATE) == STATE_ASSOCIATED |
| |
| def join_node(self, node, node_type=JOIN_TYPE_ROUTER, should_set_key=True): |
| """Join a network specified by another node, `node` should be a Node""" |
| |
| if not node.is_associated(): |
| return "{} is not associated".format(node) |
| |
| name = node.get(WPAN_NAME) |
| panid = node.get(WPAN_PANID) |
| xpanid = node.get(WPAN_XPANID) |
| channel = node.get(WPAN_CHANNEL) |
| |
| if should_set_key: |
| netkey = node.get(WPAN_KEY) |
| self.set(WPAN_KEY, netkey[1:-1], binary_data=True) |
| |
| return self.join(name[1:-1], channel=channel, node_type=node_type, panid=panid, xpanid=xpanid) |
| |
| def whitelist_node(self, node): |
| """Adds a given node (of type `Node`) to the whitelist of `self` and enables whitelisting on `self`""" |
| |
| self.add(WPAN_MAC_WHITELIST_ENTRIES, node.get(WPAN_EXT_ADDRESS)[1:-1]) |
| self.set(WPAN_MAC_WHITELIST_ENABLED, '1') |
| |
| def is_in_scan_result(self, scan_result): |
| """Checks if node is in the scan results |
| `scan_result` must be an array of `ScanResult` object (see `parse_scan_result`). |
| """ |
| joinable = (self.get(WPAN_NETWORK_ALLOW_JOIN) == 'true') |
| panid = self.get(WPAN_PANID) |
| xpanid = self.get(WPAN_XPANID)[2:] |
| name = self.get(WPAN_NAME)[1:-1] |
| channel = self.get(WPAN_CHANNEL) |
| ext_address = self.get(WPAN_EXT_ADDRESS)[1:-1] |
| |
| for item in scan_result: |
| if all( [item.network_name == name, |
| item.panid == panid, |
| item.xpanid == xpanid, |
| item.channel == channel, |
| item.ext_address == ext_address, |
| (item.type == ScanResult.TYPE_DISCOVERY_SCAN) or (item.joinable == joinable) ] ): |
| return True |
| |
| return False |
| |
| #------------------------------------------------------------------------------------------------------------------ |
| # class methods |
| |
| @classmethod |
| def init_all_nodes(cls, wait_time=15): |
| """Issues a `wpanctl.leave` on all `Node` objects and waits for them to be ready""" |
| random.seed(12345) |
| time.sleep(0.5) |
| start_time = time.time() |
| for node in Node._all_nodes: |
| while True: |
| try: |
| node.leave() |
| except subprocess.CalledProcessError as e: |
| _log(' -> \'{}\' exit code: {}'.format(e.output, e.returncode)) |
| if time.time() - start_time > wait_time: |
| print 'Took too long to init all nodes ({}>{} sec)'.format(time.time() - start_time, wait_time) |
| raise |
| except: |
| raise |
| else: |
| break |
| time.sleep(0.4) |
| |
| @classmethod |
| def set_time_speedup_factor(cls, factor): |
| """Sets up the time speed up factor - should be set before creating any `Node` objects""" |
| if len(Node._all_nodes) != 0: |
| raise Node._NodeError('set_time_speedup_factor() cannot be called after creating a `Node`') |
| Node._SPEED_UP_FACTOR = factor |
| |
| #------------------------------------------------------------------------------------------------------------------ |
| # IPv6 message Sender and Receiver class |
| |
| class _NodeError(BaseException): |
| pass |
| |
| def prepare_tx(self, src, dst, data=40, count=1): |
| """Prepares an IPv6 msg transmission. |
| |
| - `src` and `dst` can be either a string containing IPv6 address, or a tuple (ipv6 address as string, port), |
| if no port is given, a random port number is used. |
| - `data` can be either a string containing the message to be sent, or an int indicating size of the message (a |
| random message with the given length will be used). |
| - `count` gives number of times the message will be sent (default is 1). |
| |
| Returns an `AsyncSender` object. |
| |
| """ |
| if isinstance(src, tuple): |
| src_addr = src[0] |
| src_port = src[1] |
| else: |
| src_addr = src |
| src_port = random.randint(49152, 65535) |
| |
| if isinstance(dst, tuple): |
| dst_addr = dst[0] |
| dst_port = dst[1] |
| else: |
| dst_addr = dst |
| dst_port = random.randint(49152, 65535) |
| |
| if isinstance(data, int): |
| # create a random message with the given length. |
| all_chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.,><?;:[]=-+)(*&^%$#@' |
| msg = ''.join(random.choice(all_chars) for _ in range(data)) |
| else: |
| msg = data |
| |
| return AsyncSender(self, src_addr, src_port, dst_addr, dst_port, msg, count) |
| |
| def prepare_rx(self, sender): |
| """Prepare to receive messages from a sender (an `AsyncSender`)""" |
| local_port = sender.dst_port |
| |
| if local_port in self._recvers: |
| receiver = self._recvers[local_port] |
| else: |
| receiver = AsyncReceiver(self, local_port) |
| self._recvers[local_port] = receiver |
| |
| receiver._add_sender(sender.src_addr, sender.src_port, sender.msg, sender.count) |
| return receiver |
| |
| def _remove_recver(self, recvr): |
| # Removes a receiver from weak dictionary - called when the receiver is done and its scoket is closed |
| local_port = recvr.local_port |
| if local_port in self._recvers: |
| del self._recvers[local_port] |
| |
| @staticmethod |
| def perform_async_tx_rx(timeout=20): |
| """Called to perform all previously prepared async rx and tx operations""" |
| try: |
| start_time = time.time() |
| while asyncore.socket_map: |
| elapsed_time = time.time() - start_time |
| if elapsed_time > timeout: |
| print 'Performing aysnc tx/tx took too long ({}>{} sec)'.format(elapsed_time, timeout) |
| raise Node._NodeError('perform_tx_rx timed out ({}>{} sec)'.format(elapsed_time, timeout)) |
| # perform a single asyncore loop |
| asyncore.loop(timeout=1, count=1) |
| except: |
| print 'Failed to perform async rx/tx' |
| raise |
| |
| #----------------------------------------------------------------------------------------------------------------------- |
| # `AsyncSender` and `AsyncReceiver classes |
| |
| _SO_BINDTODEVICE = 25 |
| |
| def _is_ipv6_addr_link_local(ip_addr): |
| """Indicates if a given IPv6 address is link-local""" |
| return ip_addr.lower().startswith('fe80::') |
| |
| def _create_socket_address(ip_address, port): |
| """Convert a given IPv6 address (string) and port number into a socket address""" |
| # `socket.getaddrinfo()` returns a list of `(family, socktype, proto, canonname, sockaddr)` where `sockaddr` |
| # (at index 4) can be used as input in socket methods (like `sendto()`, `bind()`, etc.). |
| return socket.getaddrinfo(ip_address, port)[0][4] |
| |
| class AsyncSender(asyncore.dispatcher): |
| """ An IPv6 async message sender - use `Node.prepare_tx()` to create one""" |
| |
| def __init__(self, node, src_addr, src_port, dst_addr, dst_port, msg, count): |
| self._node = node |
| self._src_addr = src_addr |
| self._src_port = src_port |
| self._dst_addr = dst_addr |
| self._dst_port = dst_port |
| self._msg = msg |
| self._count = count |
| self._dst_sock_addr = _create_socket_address(dst_addr, dst_port) |
| self._tx_buffer = self._msg |
| self._tx_counter = 0 |
| |
| # Create a socket, bind it to the node's interface |
| sock = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM) |
| sock.setsockopt(socket.SOL_SOCKET, _SO_BINDTODEVICE, node.interface_name + '\0') |
| sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1) |
| |
| # Bind the socket to the given src address |
| if _is_ipv6_addr_link_local(src_addr): |
| # If src is a link local address it requires the interface name to be specified. |
| src_sock_addr = _create_socket_address(src_addr + '%' + node.interface_name, src_port) |
| else: |
| src_sock_addr = _create_socket_address(src_addr, src_port) |
| sock.bind(src_sock_addr) |
| |
| asyncore.dispatcher.__init__(self, sock) |
| |
| # Property getters |
| |
| @property |
| def node(self): |
| return self._node |
| |
| @property |
| def src_addr(self): |
| return self._src_addr |
| |
| @property |
| def src_port(self): |
| return self._src_port |
| |
| @property |
| def dst_addr(self): |
| return self._dst_addr |
| |
| @property |
| def dst_port(self): |
| return self._dst_port |
| |
| @property |
| def msg(self): |
| return self._msg |
| |
| @property |
| def count(self): |
| return self._count |
| |
| @property |
| def was_successful(self): |
| """Indicates if the transmission of IPv6 messages finished successfully""" |
| return self._tx_counter == self._count |
| |
| # asyncore.dispatcher callbacks |
| |
| def readable(self): |
| return False |
| |
| def writable(self): |
| return True |
| |
| def handle_write(self): |
| sent_len = self.sendto(self._tx_buffer, self._dst_sock_addr) |
| |
| if self._node._verbose: |
| if sent_len < 30: |
| info_text = '{} bytes ("{}")'.format(sent_len, self._tx_buffer[:sent_len]) |
| else: |
| info_text = '{} bytes'.format(sent_len) |
| _log('- Node{} sent {} to [{}]:{} from [{}]:{}'.format(self._node._index, info_text, |
| self._dst_addr, self._dst_port, |
| self._src_addr, self._src_port)) |
| |
| self._tx_buffer = self._tx_buffer[sent_len:] |
| |
| if len(self._tx_buffer) == 0: |
| self._tx_counter += 1 |
| if self._tx_counter < self._count: |
| self._tx_buffer = self._msg |
| else: |
| self.handle_close() |
| |
| def handle_close(self): |
| self.close() |
| |
| #- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| |
| class AsyncReceiver(asyncore.dispatcher): |
| """ An IPv6 async message receiver - use `prepare_tx()` to create one""" |
| |
| _MAX_RECV_SIZE = 2048 |
| |
| class _SenderInfo(object): |
| def __init__(self, sender_addr, sender_port, msg, count): |
| self._sender_addr = sender_addr |
| self._sender_port = sender_port |
| self._msg = msg |
| self._count = count |
| self._rx_counter = 0 |
| |
| def _check_received(self, msg, sender_addr, sender_port): |
| if self._msg == msg and self._sender_addr == sender_addr and self._sender_port == sender_port: |
| self._rx_counter += 1 |
| return self._did_recv_all() |
| |
| def _did_recv_all(self): |
| return self._rx_counter >= self._count |
| |
| def __init__(self, node, local_port): |
| self._node = node |
| self._local_port = local_port |
| self._senders = [] # list of `_SenderInfo` objects |
| self._all_rx = [] # contains all received messages as a list of (pkt, (src_addr, src_port)) |
| |
| # Create a socket, bind it to the node's interface |
| sock = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM) |
| sock.setsockopt(socket.SOL_SOCKET, _SO_BINDTODEVICE, node.interface_name + '\0') |
| sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1) |
| |
| # Bind the socket to any IPv6 address with the given local port |
| local_sock_addr = _create_socket_address('::', local_port) |
| sock.bind(local_sock_addr) |
| |
| asyncore.dispatcher.__init__(self, sock) |
| |
| def _add_sender(self, sender_addr, sender_port, msg, count): |
| self._senders.append(AsyncReceiver._SenderInfo(sender_addr, sender_port, msg, count)) |
| |
| # Property getters |
| |
| @property |
| def node(self): |
| return self._node |
| |
| @property |
| def local_port(self): |
| return self._local_port |
| |
| @property |
| def all_rx_msg(self): |
| """returns all received messages as a list of (msg, (src_addr, src_port))""" |
| return self._all_rx |
| |
| @property |
| def was_successful(self): |
| """Indicates if all expected IPv6 messages were received successfully""" |
| return all([sender._did_recv_all() for sender in self._senders]) |
| |
| # asyncore.dispatcher callbacks |
| |
| def readable(self): |
| return True |
| |
| def writable(self): |
| return False |
| |
| def handle_read(self): |
| (msg, src_sock_addr) = self.recvfrom(AsyncReceiver._MAX_RECV_SIZE) |
| src_addr = src_sock_addr[0] |
| src_port = src_sock_addr[1] |
| |
| if (_is_ipv6_addr_link_local(src_addr)): |
| if '%' in src_addr: |
| src_addr = src_addr.split('%')[0] # remove the interface name from address |
| |
| if self._node._verbose: |
| if len(msg) < 30: |
| info_text = '{} bytes ("{}")'.format(len(msg), msg) |
| else: |
| info_text = '{} bytes'.format(len(msg)) |
| _log('- Node{} received {} on port {} from [{}]:{}'.format(self._node._index, info_text, |
| self._local_port, |
| src_addr, src_port)) |
| |
| self._all_rx.append((msg, (src_addr, src_port))) |
| |
| if all([sender._check_received(msg, src_addr, src_port) for sender in self._senders]): |
| self.handle_close() |
| |
| def handle_close(self): |
| self.close() |
| # remove the receiver from the node once the socket is closed |
| self._node._remove_recver(self) |
| |
| #----------------------------------------------------------------------------------------------------------------------- |
| |
| def verify(condition): |
| """Verifies that a `condition` is true, otherwise exits""" |
| if not condition: |
| calling_frame = inspect.currentframe().f_back |
| print 'verify() failed at line {} in "{}"'.format(calling_frame.f_lineno, calling_frame.f_code.co_filename) |
| exit(1) |
| |
| |
| #----------------------------------------------------------------------------------------------------------------------- |
| # Parsing `wpanctl` output |
| |
| #- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| class ScanResult(object): |
| """ This object encapsulates a scan result (active/discover/energy scan)""" |
| |
| TYPE_ACTIVE_SCAN = 'active-scan' |
| TYPE_DISCOVERY_SCAN = 'discover-scan' |
| TYPE_ENERGY_SCAN = 'energy-scan' |
| |
| def __init__(self, result_text): |
| |
| items = [item.strip() for item in result_text.split('|')] |
| |
| if len(items) == 8: |
| self._type = ScanResult.TYPE_ACTIVE_SCAN |
| self._index = items[0] |
| self._joinable = (items[1] == 'YES') |
| self._network_name = items[2][1:-1] |
| self._panid = items[3] |
| self._channel = items[4] |
| self._xpanid = items[5] |
| self._ext_address = items[6] |
| self._rssi = items[7] |
| elif len(items) == 7: |
| self._type = ScanResult.TYPE_DISCOVERY_SCAN |
| self._index = items[0] |
| self._network_name = items[1][1:-1] |
| self._panid = items[2] |
| self._channel = items[3] |
| self._xpanid = items[4] |
| self._ext_address = items[5] |
| self._rssi = items[6] |
| elif len(items) == 2: |
| self._type = ScanResult.TYPE_ENERGY_SCAN |
| self._channel = items[0] |
| self._rssi = items[1] |
| else: |
| raise ValueError('"{}" does not seem to be a valid scan result string'.result_text) |
| |
| @property |
| def type(self): |
| return self._type |
| |
| @property |
| def joinable(self): |
| return self._joinable |
| |
| @property |
| def network_name(self): |
| return self._network_name |
| |
| @property |
| def panid(self): |
| return self._panid |
| |
| @property |
| def channel(self): |
| return self._channel |
| |
| @property |
| def xpanid(self): |
| return self._xpanid |
| |
| @property |
| def ext_address(self): |
| return self._ext_address |
| |
| @property |
| def rssi(self): |
| return self._rssi |
| |
| def __repr__(self): |
| return 'ScanResult({})'.format(self.__dict__) |
| |
| def parse_scan_result(scan_result): |
| """ Parses scan result string and returns an array of `ScanResult` objects""" |
| return [ ScanResult(item) for item in scan_result.split('\n')[2:] ] # skip first two lines which are table headers |
| |
| def parse_list(list_string): |
| """ |
| Parses IPv6/prefix/route list string (output of wpanctl get for properties WPAN_IP6_ALL_ADDRESSES, |
| IP6_MULTICAST_ADDRESSES, WPAN_THREAD_ON_MESH_PREFIXES, ...) |
| Returns an array of strings each containing an IPv6/prefix/route entry. |
| """ |
| # List string example (get(WPAN_IP6_ALL_ADDRESSES) output): |
| # |
| # '[\n |
| # \t"fdf4:5632:4940:0:8798:8701:85d4:e2be prefix_len:64 origin:ncp valid:forever preferred:forever"\n |
| # \t"fe80::2092:9358:97ea:71c6 prefix_len:64 origin:ncp valid:forever preferred:forever"\n |
| # ]' |
| # |
| # We split the lines ('\n' as separator) and skip the first and last lines which are '[' and ']'. |
| # For each line, skip the first two characters (which are '\t"') and last character ('"'), then split the string |
| # using whitespace as separator. The first entry is the IPv6 address. |
| # |
| return [line[2:-1].split()[0] for line in list_string.split('\n')[1:-1]] |
| |
| #- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| class OnMeshPrefix(object): |
| """ This object encapsulates an on-mesh prefix""" |
| |
| def __init__(self, text): |
| |
| # Example of expected text: |
| # |
| # '\t"fd00:abba:cafe:: prefix_len:64 origin:user stable:yes flags:0x31' |
| # ' [on-mesh:1 def-route:0 config:0 dhcp:0 slaac:1 pref:1 prio:med]"' |
| |
| m = re.match('\t"([0-9a-fA-F:]+)\s*prefix_len:(\d+)\s+origin:(\w*)\s+stable:(\w*).*' + |
| '\[on-mesh:(\d)\s+def-route:(\d)\s+config:(\d)\s+dhcp:(\d)\s+slaac:(\d)\s+pref:(\d)\s+prio:(\w*)\]', |
| text) |
| verify(m is not None) |
| data = m.groups() |
| |
| self._prefix = data[0] |
| self._prefix_len = data[1] |
| self._origin = data[2] |
| self._stable = (data[3] == 'yes') |
| self._on_mesh = (data[4] == '1') |
| self._def_route = (data[5] == '1') |
| self._config = (data[6] == '1') |
| self._dhcp = (data[7] == '1') |
| self._slaac = (data[8] == '1') |
| self._preffered = (data[9] == '1') |
| self._priority = (data[10]) |
| |
| @property |
| def prefix(self): |
| return self._prefix |
| |
| @property |
| def prefix_len(self): |
| return self._prefix_len |
| |
| @property |
| def origin(self): |
| return self._origin |
| |
| @property |
| def priority(self): |
| return self._priority |
| |
| def is_stable(self): |
| return self._stable |
| |
| def is_on_mesh(self): |
| return self._on_mesh |
| |
| def is_def_route(self): |
| return self._def_route |
| |
| def is_config(self): |
| return self._config |
| |
| def is_dhcp(self): |
| return self._dhcp |
| |
| def is_slaac(self): |
| return self._slaac |
| |
| def is_preffered(self): |
| return self._preffered |
| |
| def __repr__(self): |
| return 'OnMeshPrefix({})'.format(self.__dict__) |
| |
| def parse_on_mesh_prefix_result(on_mesh_prefix_list): |
| """ Parses on-mesh prefix list string and returns an array of `OnMeshPrefix` objects""" |
| return [ OnMeshPrefix(item) for item in on_mesh_prefix_list.split('\n')[1:-1] ] |
| |
| #- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
| class ChildEntry(object): |
| """ This object encapsulates an child entry""" |
| |
| def __init__(self, text): |
| |
| # Example of expected text: |
| # |
| # `\t"E24C5F67F4B8CBB9, RLOC16:d402, NetDataVer:175, LQIn:3, AveRssi:-20, LastRssi:-20, Timeout:120, Age:0, ` |
| # `RxOnIdle:no, FFD:no, SecDataReq:yes, FullNetData:yes"` |
| # |
| |
| # We get rid of the first two chars `\t"' and last char '"', split the rest using whitespace as seperator. |
| # Then remove any ',' at end of items in the list. |
| items = [item[:-1] if item[-1] ==',' else item for item in text[2:-1].split()] |
| |
| # First item in the extended address |
| self._ext_address = items[0] |
| |
| # Convert the rest into a dictionary by splitting using ':' as seperator |
| dict = {item.split(':')[0] : item.split(':')[1] for item in items[1:]} |
| |
| self._rloc16 = dict['RLOC16'] |
| self._timeout = dict['Timeout'] |
| self._rx_on_idle = (dict['RxOnIdle'] == 'yes') |
| self._ffd = (dict['FFD'] == 'yes') |
| |
| @property |
| def ext_address(self): |
| return self._ext_address |
| |
| @property |
| def rloc16(self): |
| return self._rloc16 |
| |
| @property |
| def timeout(self): |
| return self._timeout |
| |
| def is_rx_on_when_idle(self): |
| return self._rx_on_idle |
| |
| def is_ffd(self): |
| return self._ffd |
| |
| def __repr__(self): |
| return 'ChildEntry({})'.format(self.__dict__) |
| |
| def parse_child_table_result(child_table_list): |
| """ Parses child table list string and returns an array of `ChildEntry` objects""" |
| return [ ChildEntry(item) for item in child_table_list.split('\n')[1:-1] ] |
