Files
n_signer/tests/test_kb2040_dual.py

152 lines
4.4 KiB
Python

#!/usr/bin/env python3
"""
Verify KB2040 composite USB exposes both HID and Vendor/WebUSB interfaces.
Usage:
python3 tests/test_kb2040_dual.py
Dependencies:
pip install pyusb
Notes:
- May require sudo unless udev permissions are configured.
- Defaults to VID:PID 239a:8104 per user report.
"""
import argparse
import sys
import time
try:
import usb.core
import usb.util
except ImportError:
print("ERROR: Missing dependency. Install with: pip install pyusb")
sys.exit(2)
def find_device(vid: int, pid: int):
return usb.core.find(idVendor=vid, idProduct=pid)
def claim_vendor_interface(dev, vendor_itf):
itf_num = vendor_itf.bInterfaceNumber
try:
if dev.is_kernel_driver_active(itf_num):
dev.detach_kernel_driver(itf_num)
except (NotImplementedError, usb.core.USBError):
pass
usb.util.claim_interface(dev, itf_num)
def release_vendor_interface(dev, vendor_itf):
itf_num = vendor_itf.bInterfaceNumber
try:
usb.util.release_interface(dev, itf_num)
except usb.core.USBError:
pass
def find_endpoints(vendor_itf):
ep_out = None
ep_in = None
for ep in vendor_itf:
direction = usb.util.endpoint_direction(ep.bEndpointAddress)
if direction == usb.util.ENDPOINT_OUT:
ep_out = ep
elif direction == usb.util.ENDPOINT_IN:
ep_in = ep
return ep_out, ep_in
def main() -> int:
parser = argparse.ArgumentParser()
parser.add_argument("--vid", default="239a", help="USB Vendor ID in hex (default: 239a)")
parser.add_argument("--pid", default="8104", help="USB Product ID in hex (default: 8104)")
parser.add_argument("--payload", default="hello", help="Payload for vendor echo test")
parser.add_argument("--timeout-ms", type=int, default=2000, help="Read timeout in ms")
args = parser.parse_args()
vid = int(args.vid, 16)
pid = int(args.pid, 16)
passed = 0
failed = 0
dev = find_device(vid, pid)
if dev is None:
print(f"[FAIL] Device {vid:04x}:{pid:04x} not found")
return 1
print(f"[PASS] Device {dev.idVendor:04x}:{dev.idProduct:04x} found")
passed += 1
try:
dev.set_configuration()
except usb.core.USBError:
# Usually already configured; continue.
pass
cfg = dev.get_active_configuration()
hid_itf = None
vendor_itf = None
for itf in cfg:
if itf.bInterfaceClass == 0x03: # HID
hid_itf = itf
elif itf.bInterfaceClass == 0xFF: # Vendor-specific
vendor_itf = itf
if hid_itf is not None:
print(f"[PASS] HID interface found (if={hid_itf.bInterfaceNumber})")
passed += 1
else:
print("[FAIL] HID interface not found")
failed += 1
if vendor_itf is not None:
print(f"[PASS] Vendor/WebUSB interface found (if={vendor_itf.bInterfaceNumber})")
passed += 1
else:
print("[FAIL] Vendor/WebUSB interface not found")
failed += 1
if vendor_itf is not None:
try:
claim_vendor_interface(dev, vendor_itf)
ep_out, ep_in = find_endpoints(vendor_itf)
if ep_out is None or ep_in is None:
print("[FAIL] Could not find bulk IN/OUT endpoints on vendor interface")
failed += 1
else:
payload = args.payload.encode("utf-8")
ep_out.write(payload)
time.sleep(0.05)
data = ep_in.read(ep_in.wMaxPacketSize, timeout=args.timeout_ms)
got = bytes(data)
expected = b"KB2040:" + payload
if got == expected:
print(f"[PASS] Vendor echo OK: sent={payload!r} got={got!r}")
passed += 1
else:
print(f"[FAIL] Vendor echo mismatch: expected={expected!r} got={got!r}")
failed += 1
except usb.core.USBTimeoutError:
print("[FAIL] Vendor read timed out")
failed += 1
except usb.core.USBError as e:
print(f"[FAIL] USB error during vendor test: {e}")
failed += 1
finally:
release_vendor_interface(dev, vendor_itf)
print(f"\nSummary: {passed} passed, {failed} failed")
if failed == 0:
print("Dual interface support is working (HID + Vendor/WebUSB).")
return 0
return 1
if __name__ == "__main__":
sys.exit(main())