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github-python

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# Search each device bound to the xhci_hcd driver for the active device...
for hci_name in self.SUPPORTED_USB_CONTROLLERS:
for path in glob("/sys/bus/{}/*/usb*".format(hci_name)):
if self._node_matches_our_device(path):
return
raise ValueError("This device needs to be on a supported backend. Usually that means plugged into a blue/USB 3.0 port!\nBailing out.")
def _node_matches_our_device(self, path):
"""
Checks to see if the given sysfs node matches our given device.
Can be used to check if an xhci_hcd controller subnode reflects a given device.,
"""
# If this isn't a valid USB device node, it's not what we're looking for.
if not os.path.isfile(path + "/busnum"):
return False
# We assume that a whole _bus_ is associated with a host controller driver, so we
# only check for a matching bus ID.
if self.dev.bus != self._read_num_file(path + "/busnum"):
return False
# If all of our checks passed, this is our device.
return True
def _read_num_file(self, path):
"""
Reads a numeric value from a sysfs file that contains only a number.
"""
with open(path, 'r') as f:
raw = f.read()
return int(raw)
class WindowsBackend(HaxBackend):
"""
Use libusbK for most of it, and use the handle libusbK gets for us to call kernel32's DeviceIoControl
"""
BACKEND_NAME = "Windows"
SUPPORTED_SYSTEMS = ["Windows"]
# Windows and libusbK specific constants
WINDOWS_FILE_DEVICE_UNKNOWN = 0x00000022
LIBUSBK_FUNCTION_CODE_GET_STATUS = 0x807
WINDOWS_METHOD_BUFFERED = 0
WINDOWS_FILE_ANY_ACCESS = 0
RAW_REQUEST_STRUCT_SIZE = 24 # 24 is how big the struct is, just trust me
TO_ENDPOINT = 2
# Yoinked (with love) from Windows' CTL_CODE macro
def win_ctrl_code(self, DeviceType, Function, Method, Access):
""" Return a control code for use with DeviceIoControl() """
return ((DeviceType) << 16 | ((Access) << 14) | ((Function)) << 2 | (Method))
def __init__(self, skip_checks):
import libusbK
self.libk = libusbK
# Grab libusbK
self.lib = ctypes.cdll.libusbK
def find_device(self, Vid, Pid):
"""
Windows version of this function
Its return isn't actually significant, but it needs to be not None
"""
# Get a list of devices to use later
device_list = self.libk.KLST_HANDLE()
device_info = ctypes.pointer(self.libk.KLST_DEV_INFO())
ret = self.lib.LstK_Init(ctypes.byref(device_list), 0)
# Removed exception to not block app.-falquinho
if ret == 0:
print('Lstk_Init(): Error')
return None
# Get info for a device with that vendor ID and product ID
# device_info should either be a pointer or be passed 'byref'
# not both. I'll make it NOT a pointer.-falquinho
device_info = self.libk.KLST_DEV_INFO()
ret = self.lib.LstK_FindByVidPid(device_list, Vid, Pid, ctypes.byref(device_info))
# LstK_Free parameter is NOT a pointer
self.lib.LstK_Free(device_list)
if device_info is None or ret == 0:
#print('device_info is None or ret == 0')
return None
# Populate function pointers for use with the driver our device uses (which should be libusbK)
self.dev = self.libk.KUSB_DRIVER_API()
ret = self.lib.LibK_LoadDriverAPI(ctypes.byref(self.dev), device_info.contents.DriverID)
if ret == 0:
print('LibK_LoadDriverAPI(): Error')