def resetWirelessDevice(phy, primary_interface):
"""
Reset a wireless device's interfaces to clean state.
This will rename, delete, or add an interface as necessary to make sure
only the primary interface exists, e.g. "wlan0" for a wireless device, e.g.
phy0.
"""
primaryExists = False
renameOrRemove = list()
for ifname in pdos.listdir(SYS_DIR):
if ifname in EXCLUDE_IFACES:
continue
if getWirelessPhyName(ifname) == phy:
if ifname == primary_interface:
primaryExists = True
else:
renameOrRemove.append(ifname)
for ifname in renameOrRemove:
if primaryExists:
cmd = ['iw', 'dev', ifname, 'del']
subprocess.call(cmd)
else:
cmd = ['ip', 'link', 'set', 'dev', ifname, 'down', 'name',
primary_interface]
subprocess.call(cmd)
primaryExists = True
if not primaryExists:
cmd = ['iw', 'phy', phy, 'interface', 'add', primary_interface, 'type',
'managed']
subprocess.call(cmd)
def resetWirelessDevice(phy, primary_interface):
"""
Reset a wireless device's interfaces to clean state.
This will rename, delete, or add an interface as necessary to make sure
only the primary interface exists, e.g. "wlan0" for a wireless device, e.g.
phy0.
"""
primaryExists = False
renameOrRemove = list()
for ifname in pdos.listdir(SYS_DIR):
if ifname in EXCLUDE_IFACES:
continue
if getWirelessPhyName(ifname) == phy:
if ifname == primary_interface:
primaryExists = True
else:
renameOrRemove.append(ifname)
for ifname in renameOrRemove:
if primaryExists:
cmd = ['iw', 'dev', ifname, 'del']
subprocess.call(cmd)
else:
cmd = ['ip', 'link', 'set', 'dev', ifname, 'down', 'name',
primary_interface]
subprocess.call(cmd)
primaryExists = True
if not primaryExists:
cmd = ['iw', 'phy', phy, 'interface', 'add', primary_interface, 'type',
'managed']
subprocess.call(cmd)
def flushWirelessInterfaces(phy):
"""
Remove all virtual interfaces associated with a wireless device.
This should be used before giving a chute exclusive access to a device
(e.g. monitor mode), so that it does not inherit unexpected interfaces.
"""
for ifname in pdos.listdir(SYS_DIR):
if ifname in EXCLUDE_IFACES:
continue
if getWirelessPhyName(ifname) == phy:
cmd = ['iw', 'dev', ifname, 'del']
subprocess.call(cmd)
def flushWirelessInterfaces(phy):
"""
Remove all virtual interfaces associated with a wireless device.
This should be used before giving a chute exclusive access to a device
(e.g. monitor mode), so that it does not inherit unexpected interfaces.
"""
for ifname in pdos.listdir(SYS_DIR):
if ifname in EXCLUDE_IFACES:
continue
if getWirelessPhyName(ifname) == phy:
cmd = ['iw', 'dev', ifname, 'del']
subprocess.call(cmd)
def listSystemDevices():
"""
Detect devices on the system.
The result is a single list of dictionaries, each containing information
about a network device.
"""
devices = list()
detectedWifi = set()
for ifname in pdos.listdir(SYS_DIR):
if ifname in EXCLUDE_IFACES:
continue
# Only want to detect physical interfaces.
if isVirtual(ifname):
continue
# More special cases to ignore for now.
if ifname.startswith("br"):
continue
if ifname.startswith("docker"):
continue
if ifname.startswith("sit"):
continue
dev = {
'name': ifname,
'mac': getMACAddress(ifname)
}
if isWAN(ifname):
dev['type'] = 'wan'
elif isWireless(ifname):
# Detect wireless devices separately.
continue
else:
dev['type'] = 'lan'
devices.append(dev)
wifi_devices = listWiFiDevices()
devices.extend(wifi_devices)
return devices
def listSystemDevices():
"""
Detect devices on the system.
The result is a single list of dictionaries, each containing information
about a network device.
"""
devices = list()
for ifname in pdos.listdir(SYS_DIR):
if ifname in EXCLUDE_IFACES:
continue
# Only want to detect physical interfaces.
if isVirtual(ifname):
continue
# More special cases to ignore for now.
if ifname.startswith("br"):
continue
if ifname.startswith("docker"):
continue
if ifname.startswith("sit"):
continue
dev = {
'name': ifname,
'mac': getMACAddress(ifname)
}
if isWAN(ifname):
dev['type'] = 'wan'
elif isWireless(ifname):
# Detect wireless devices separately.
continue
else:
dev['type'] = 'lan'
devices.append(dev)
wifi_devices = listWiFiDevices()
devices.extend(wifi_devices)
return devices
def detectSystemDevices():
"""
Detect devices on the system.
The result is three lists stored in a dictionary. The three lists are
indexed by 'wan', 'wifi', and 'lan'. Other devices may be supported by
adding additional lists.
Within each list, a device is represented by a dictionary. Currently, only
the 'name' field is defined. Later, we may fill in device information
(e.g. what channels a WiFi card supports).
"""
devices = dict()
devices['wan'] = list()
devices['wifi'] = list()
devices['lan'] = list()
for ifname in pdos.listdir(SYS_DIR):
if ifname in EXCLUDE_IFACES:
continue
# Only want to detect physical interfaces.
if isVirtual(ifname):
continue
# More special cases to ignore for now.
if ifname.startswith("br"):
continue
if ifname.startswith("docker"):
continue
dev = {"name": ifname}
if isWAN(ifname):
devices['wan'].append(dev)
elif isWireless(ifname):
devices['wifi'].append(dev)
else:
devices['lan'].append(dev)
return devices
def listWiFiDevices():
# Collect information about the physical devices (e.g. phy0 -> MAC address,
# device type, PCI slot, etc.) and store as objects in a dictionary.
devices = dict()
try:
for phy in pdos.listdir(IEEE80211_DIR):
mac = getPhyMACAddress(phy)
reader = SysReader(phy)
devices[phy] = {
'name': "wifi{}".format(mac.replace(':', '')),
'type': 'wifi',
'mac': mac,
'phy': phy,
'vendor': reader.getVendorId(),
'device': reader.getDeviceId(),
'slot': reader.getSlotName()
}
except OSError:
# If we get an error here, it probably just means there are no WiFi
# devices.
pass
# Collect a list of interfaces corresponding to each physical device
# (e.g. phy0 -> wlan0, vwlan0.0000, etc.)
interfaces = dict((dev, []) for dev in devices.keys())
for ifname in pdos.listdir(SYS_DIR):
try:
path = "{}/{}/phy80211/name".format(SYS_DIR, ifname)
phy = readSysFile(path)
path = "{}/{}/ifindex".format(SYS_DIR, ifname)
ifindex = int(readSysFile(path))
interfaces[phy].append({
'ifname': ifname,
'ifindex': ifindex
})
except:
# Error probably means it was not a wireless interface.
pass
# Sort by ifindex to identify the primary interface, which is the one that
# was created when the device was first added. We make use the fact that
# Linux uses monotonically increasing ifindex values.
for phy, device in six.iteritems(devices):
if len(interfaces[phy]) > 0:
interfaces[phy].sort(key=operator.itemgetter('ifindex'))
device['primary_interface'] = interfaces[phy][0]['ifname']
else:
device['primary_interface'] = None
# Finally, sort the device list by PCI/USB slot to create an ordering that
# is stable across device reboots and somewhat stable across hardware
# swaps.
result = list(devices.values())
result.sort(key=operator.itemgetter('slot'))
pci_index = 0
usb_index = 0
for dev in result:
if dev['slot'].startswith("pci"):
dev['id'] = "pci-wifi-{}".format(pci_index)
pci_index += 1
elif dev['slot'].startswith("usb"):
dev['id'] = "usb-wifi-{}".format(usb_index)
usb_index += 1
return result
def test_pdos(mOs):
pdos.listdir('test')
mOs.listdir.assert_called_once_with('test')
def listWiFiDevices():
# Collect information about the physical devices (e.g. phy0 -> MAC address,
# device type, PCI slot, etc.) and store as objects in a dictionary.
devices = dict()
try:
for phy in pdos.listdir(IEEE80211_DIR):
mac = getPhyMACAddress(phy)
reader = SysReader(phy)
devices[phy] = {
'name': "wifi{}".format(mac.replace(':', '')),
'type': 'wifi',
'mac': mac,
'phy': phy,
'vendor': reader.getVendorId(),
'device': reader.getDeviceId(),
'slot': reader.getSlotName()
}
except OSError:
# If we get an error here, it probably just means there are no WiFi
# devices.
pass
# Collect a list of interfaces corresponding to each physical device
# (e.g. phy0 -> wlan0, vwlan0.0000, etc.)
interfaces = dict((dev, []) for dev in devices.keys())
for ifname in pdos.listdir(SYS_DIR):
try:
path = "{}/{}/phy80211/name".format(SYS_DIR, ifname)
phy = readSysFile(path)
path = "{}/{}/ifindex".format(SYS_DIR, ifname)
ifindex = int(readSysFile(path))
interfaces[phy].append({'ifname': ifname, 'ifindex': ifindex})
except:
# Error probably means it was not a wireless interface.
pass
# Sort by ifindex to identify the primary interface, which is the one that
# was created when the device was first added. We make use the fact that
# Linux uses monotonically increasing ifindex values.
for phy, device in devices.iteritems():
if len(interfaces[phy]) > 0:
interfaces[phy].sort(key=operator.itemgetter('ifindex'))
device['primary_interface'] = interfaces[phy][0]['ifname']
else:
device['primary_interface'] = None
# Finally, sort the device list by PCI/USB slot to create an ordering that
# is stable across device reboots and somewhat stable across hardware
# swaps.
result = devices.values()
result.sort(key=operator.itemgetter('slot'))
pci_index = 0
usb_index = 0
for dev in result:
if dev['slot'].startswith("pci"):
dev['id'] = "pci-wifi-{}".format(pci_index)
pci_index += 1
elif dev['slot'].startswith("usb"):
dev['id'] = "usb-wifi-{}".format(usb_index)
usb_index += 1
return result
def test_pdos(mOs):
pdos.listdir('test')
mOs.listdir.assert_called_once_with('test')