92 lines
2.3 KiB
Python
92 lines
2.3 KiB
Python
import nfc
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from nfc.clf import RemoteTarget
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import httpx
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import logging
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import binascii
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from base64 import b16encode
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from os.path import join
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from config import *
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from time import sleep
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from hashlib import sha3_512
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import coloredlogs
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coloredlogs.install()
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def password(tag):
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x = tag.identifier
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for i in range(ITERATIONS):
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x = sha3_512(x + SALT).digest()
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return x[:6]
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CONFIG_PAGES = {
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"NXP NTAG213": (0x29, 0x2A, 0x2B, 0x2C),
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"NXP NTAG215": (0x83, 0x84, 0x85, 0x86),
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"NXP NTAG216": (0xE3, 0xE4, 0xE5, 0xE6),
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}
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if __name__ == '__main__':
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log = logging.getLogger('nfc')
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clf = nfc.ContactlessFrontend()
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try:
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assert clf.open('tty:USB0:pn532')
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except TimeoutError:
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log.error('Got TimeoutError on reader connection attempt.')
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except AssertionError:
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log.error('There is no reader connected.')
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exit()
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# Set baud rate to 115200 to prevent reader from dying
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clf.device.chipset.set_serial_baudrate(115200)
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clf.device.chipset.transport.baudrate = 115200
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try:
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while 1:
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target = clf.sense(RemoteTarget('106A'), iterations=10, delay=0.1)
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if not target: continue
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count = None
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tag_id = target.sdd_res
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is_secure = False
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if not BOOPBOX_ID:
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try:
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tag = nfc.tag.activate(clf, target)
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except:
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log.error(f"TAG {tag_id} is gone.")
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continue
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try:
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if SECURE and tag.product == "NXP NTAG215":
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has_password = tag.read(CONFIG_PAGES[tag.product][0])[3] < 0xFF
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if has_password:
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psw = password(tag)
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if tag.authenticate(psw):
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is_secure = True
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except:
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log.error("Couldn't verify tag.")
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# Try to get the read count as well.
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try:
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if tag.product == "NXP NTAG215":
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count = tag.transceive(binascii.unhexlify('3902'), timeout=0.05) # READ_CNT command
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count = int.from_bytes(count, byteorder='little')
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except nfc.tag.tt2.Type2TagCommandError:
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log.error("Tag count is enabled, couldn't get a response")
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except AttributeError:
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log.error("Lost connection to tag...")
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try:
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res = httpx.post(SERVER, json={'id': b16encode(tag_id).decode(), 'is_secure': is_secure, 'count': count, 'boopbox_id': BOOPBOX_ID})
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except Exception as e:
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log.error(e)
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else:
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log.info(f"Booped {b16encode(tag_id).decode()} (secure = {is_secure}) (count = {count})")
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while clf.sense(RemoteTarget('106A')): sleep(0.1)
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except KeyboardInterrupt:
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clf.close()
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