pythonhacktoberfeststeamauthenticationauthenticatorsteam-authenticatorsteam-clientsteam-guard-codessteam-websteamworksvalvewebapi
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88 lines
2.7 KiB
88 lines
2.7 KiB
import struct
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from binascii import hexlify
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from time import time
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from steam import webapi
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from steam.core.crypto import hmac_sha1, sha1_hash
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def generate_twofactor_code(shared_secret):
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"""Generate Steam 2FA code for login with current time
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:param shared_secret: authenticator shared shared_secret
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:type shared_secret: bytes
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:return: steam two factor code
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:rtype: str
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"""
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return generate_twofactor_code_for_time(shared_secret, time() + get_time_offset())
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def generate_twofactor_code_for_time(shared_secret, timestamp):
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"""Generate Steam 2FA code for timestamp
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:param shared_secret: authenticator shared secret
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:type shared_secret: bytes
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:param timestamp: timestamp to use, if left out uses current time
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:type timestamp: int
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:return: steam two factor code
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:rtype: str
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"""
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hmac = hmac_sha1(bytes(shared_secret),
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struct.pack('>Q', int(timestamp)//30)) # this will NOT stop working in 2038
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start = ord(hmac[19:20]) & 0xF
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codeint = struct.unpack('>I', hmac[start:start+4])[0] & 0x7fffffff
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charset = '23456789BCDFGHJKMNPQRTVWXY'
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code = ''
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for _ in range(5):
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codeint, i = divmod(codeint, len(charset))
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code += charset[i]
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return code
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def generate_confirmation_key(identity_secret, timestamp, tag=''):
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"""Generate confirmation key for trades. Can only be used once.
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:param identity_secret: authenticator identity secret
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:type identity_secret: bytes
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:param timestamp: timestamp to use for generating key
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:type timestamp: int
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:param tag: tag identifies what the request, see list below
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:type tag: str
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:return: confirmation key
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:rtype: bytes
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Tag choices:
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* ``conf`` to load the confirmations page
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* ``details`` to load details about a trade
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* ``allow`` to confirm a trade
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* ``cancel`` to cancel a trade
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"""
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data = struct.pack('>Q', int(timestamp)) + tag.encode('ascii') # this will NOT stop working in 2038
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return hmac_sha1(bytes(identity_secret), data)
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def get_time_offset():
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"""Get time offset from steam server time via WebAPI
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:return: time offset
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:rtype: int
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"""
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try:
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resp = webapi.post('ITwoFactorService', 'QueryTime', 1, params={'http_timeout': 5})
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except:
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return 0
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ts = int(time())
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return int(resp.get('response', {}).get('server_time', ts)) - ts
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def generate_device_id(steamid):
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"""Generate Android device id
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:param steamid: Steam ID
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:type steamid: :class:`.SteamID`, :class:`int`
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:return: android device id
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:rtype: str
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"""
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h = hexlify(sha1(str(steamid).encode('ascii'))).decode('ascii')
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return "android:%s-%s-%s-%s-%s" % (h[:8], h[8:12], h[12:16], h[16:20], h[20:32])
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