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Virtual XAP device
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| #!/usr/bin/env python | |
| from uhid import UHIDDevice, PolledBlockingUHID | |
| import gzip | |
| import json | |
| def xap_compress(conf): | |
| return gzip.compress(json.dumps(conf).encode('utf-8'), compresslevel=9) | |
| XAP_BUFFER_SIZE = 64 | |
| XAP_DESCRIPTOR = [ | |
| 0x06, 0x51, 0xFF, # Usage Page (Vendor Defined) | |
| 0x09, 0x58, # Usage (Vendor Defined) | |
| 0xA1, 0x01, # Collection (Application) | |
| # Data to host | |
| 0x09, 0x62, # Usage (Vendor Defined) | |
| 0x15, 0x00, # Logical Minimum (0) | |
| 0x26, 0xFF, 0x00, # Logical Maximum (255) | |
| 0x95, XAP_BUFFER_SIZE, # Report Count | |
| 0x75, 0x08, # Report Size (8) | |
| 0x81, 0x02, # Input (Data, Variable, Absolute) | |
| # Data from host | |
| 0x09, 0x63, # Usage (Vendor Defined) | |
| 0x15, 0x00, # Logical Minimum (0) | |
| 0x26, 0xFF, 0x00, # Logical Maximum (255) | |
| 0x95, XAP_BUFFER_SIZE, # Report Count | |
| 0x75, 0x08, # Report Size (8) | |
| 0x91, 0x02, # Output (Data, Variable, Absolute) | |
| 0xC0 # End Collection | |
| ] | |
| XAP_INFO_JSON = xap_compress({ | |
| 'asdf':'blah', | |
| }) | |
| XAP_RESP = { | |
| b'\x00\x00': b'\x00\x00\x02\x00', # version -> 0.2.0 | |
| b'\x00\x03': b'\x02', # secure status -> unlocked | |
| b'\x00\x04': b'', # request unlock | |
| b'\x01\x05': len(XAP_INFO_JSON).to_bytes(4, byteorder='little'), # info.json len | |
| b'\x01\x06\x00\x00': XAP_INFO_JSON[:64], # info.json chunk 0 | |
| b'\x01\x06 \x00': XAP_INFO_JSON[64:64], # info.json chunk 1 | |
| b'\x01\x08': b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00', | |
| } | |
| def main(): | |
| device = UHIDDevice(0xFEED, 0x0001, 'XAP_Mock', XAP_DESCRIPTOR, backend=PolledBlockingUHID) | |
| def respond(data, report_type): | |
| req = data[3:3 + int(data[2])] | |
| ret_data = list(XAP_RESP[bytes(req)]) | |
| ret = data[:2] + [1, len(ret_data)] + ret_data + ([0] * (XAP_BUFFER_SIZE - 4 - len(ret_data))) | |
| device.send_input(ret) | |
| device.receive_output = respond | |
| device.wait_for_start() | |
| device.dispatch() | |
| if __name__ == '__main__': | |
| import logging | |
| logging.basicConfig(level=logging.INFO) | |
| main() |
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