mirror of
https://github.com/tillitis/tillitis-key1.git
synced 2024-12-29 09:26:31 -05:00
104 lines
3.1 KiB
Python
Executable File
104 lines
3.1 KiB
Python
Executable File
#!/usr/bin/env python
|
|
"""Convert python strings to UTF16 USB descriptors"""
|
|
|
|
|
|
def descriptor_to_string(descriptor: bytes) -> str:
|
|
""" Convert a USB string descriptor into a python string
|
|
|
|
Keyword arguments:
|
|
descriptor -- UTF-16 formatted USB descriptor string
|
|
"""
|
|
b_length = descriptor[0]
|
|
if b_length != len(descriptor):
|
|
raise ValueError(
|
|
'Length mismatch, ' +
|
|
f'length_field:{b_length} length:{len(descriptor)}')
|
|
|
|
b_descriptor_type = descriptor[1]
|
|
if b_descriptor_type != 0x03:
|
|
raise ValueError(
|
|
f'Type mismatch, bDescriptorType:{b_descriptor_type:02x}'
|
|
+ 'expected:0x03')
|
|
|
|
return descriptor[2:].decode('utf-16', errors='strict')
|
|
|
|
|
|
def string_to_descriptor(string: str) -> bytes:
|
|
""" Convert a python string into a USB string descriptor
|
|
|
|
Keyword arguments:
|
|
string: String to convert
|
|
"""
|
|
descriptor = bytearray()
|
|
descriptor.append(0x00) # placeholder for length
|
|
descriptor.append(0x03)
|
|
descriptor.extend(string.encode('utf-16')[2:]) # crop the BOM
|
|
descriptor[0] = len(descriptor)
|
|
|
|
return bytes(descriptor)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
MANUFACTURER = 'Mullvad'
|
|
PRODUCT = 'MTA1-USB-V1'
|
|
SERIAL = "68de5d27-e223-4874-bc76-a54d6e84068f"
|
|
|
|
# serial = bytes([
|
|
# 0x14,0x03,
|
|
# 0x32,0x00,0x30,0x00,0x31,0x00,0x37,0x00,0x2D,0x00,
|
|
# 0x32,0x00,0x2D,0x00,
|
|
# 0x32,0x00,0x35,0x00
|
|
# ])
|
|
# print(descriptor_to_string(serial))
|
|
|
|
# sample_product = bytes([
|
|
# 0x14,0x03,
|
|
# 0x43,0x00,0x48,0x00,0x35,0x00,0x35,0x00,0x34,0x00,0x5F,0x00,
|
|
# 0x43,0x00,0x44,0x00,0x43,0x00
|
|
# ])
|
|
# print(descriptor_to_string(sample_product))
|
|
# rt = string_to_descriptor(descriptor_to_string(sample_product))
|
|
# print(descriptor_to_string(rt))
|
|
#
|
|
# print(['{:02x} '.format(i) for i in sample_product])
|
|
# print(['{:02x} '.format(i) for i in rt])
|
|
|
|
# sample_mfr = bytes([
|
|
# 0x0A,0x03,
|
|
# 0x5F,0x6c,0xCF,0x82,0x81,0x6c,0x52,0x60,
|
|
# ])
|
|
# print(descriptor_to_string(sample_mfr))
|
|
# rt = string_to_descriptor(descriptor_to_string(sample_mfr))
|
|
# print(descriptor_to_string(rt))
|
|
#
|
|
# print(['{:02x} '.format(i) for i in sample_mfr])
|
|
# print(['{:02x} '.format(i) for i in rt])
|
|
|
|
with open('usb_strings.h', 'w', encoding='utf-8') as f:
|
|
f.write('#ifndef USB_STRINGS\n')
|
|
f.write('#define USB_STRINGS\n')
|
|
|
|
f.write(
|
|
f'unsigned char __code Prod_Des[]={{ // "{PRODUCT}"\n')
|
|
f.write(' ')
|
|
f.write(', '.join([f'0x{i:02x}'
|
|
for i in string_to_descriptor(PRODUCT)]))
|
|
f.write('\n};\n')
|
|
|
|
f.write(
|
|
'unsigned char __code Manuf_Des[]={ ' +
|
|
f'// "{MANUFACTURER}"\n')
|
|
f.write(' ')
|
|
f.write(', '.join([f'0x{i:02x}'
|
|
for i in string_to_descriptor(MANUFACTURER)]))
|
|
f.write('\n};\n')
|
|
|
|
f.write(
|
|
f'unsigned char __code SerDes[]={{ // "{SERIAL}"\n')
|
|
f.write(' ')
|
|
f.write(', '.join([f'0x{i:02x}'
|
|
for i in string_to_descriptor(SERIAL)]))
|
|
f.write('\n};\n')
|
|
|
|
f.write('#endif\n')
|