def parse_oem_options(api_key):
"""
解析oem帐号选项
:param api_key:
"""
if not isinstance(api_key, str):
return None
if not OEM_KEY_PATTERN.search(api_key):
#正则已修改
return None
if api_key.startswith('a685'):
#兼容山西旧key
api_key = '9006'
head = int(api_key[:4], 16)
#版本
ver = span_bits(head, 15, 12)
if not (ver >> 3):
return None
ver &= 0b111
#todo: 检查版本号
#短信相关选项。批量推送，凌拓帐号，短信，手机号码，密码
return span_bits(head, 5, 0, 0)
def extract_ref_l(ref):
"""
解析ref：长字符串
:param ref:
:return:
"""
logger.debug('extract ref begin')
if not ref or not isinstance(ref, str) or ref == '':
return None
ref = rc4_decrypt(ref, ref_pwd, a2b_hex)
logger.debug(u'ref = %r', ref)
if len(ref) <= 3:
#至少要求3字节
return None
head, acc_len, key_cipher_len = struct.unpack('>BBB', ref[:3])
logger.debug(u'head = %r, acc_len = %r, key_cipher_len = %r', head,
acc_len, key_cipher_len)
if len(ref) != 3 + acc_len + key_cipher_len + MAX_FILENAME_LEN:
return None
acc = ref[3:acc_len + 3]
key_cipher = ref[acc_len + 3:acc_len + 3 + key_cipher_len]
logger.debug(u'acc = %r, key_cipher = %r', acc, key_cipher)
logger.debug(u'rc4 decrypt result = %r',
rc4_decrypt(key_cipher, ref_pwd, None))
if acc != rc4_decrypt(key_cipher, ref_pwd, None):
return None
share, by_app = span_bits(head, 7, 6, 0)
logger.debug('extract ref end')
return share, by_app, acc, unpad(ref[-MAX_FILENAME_LEN:])
def extract_ref_s(ref):
"""
解析ref：短字符串
:param ref:
:return:
"""
b64str = base64.b64decode(str(ref))
head, acc_len = struct.unpack('>BB', b64str[:2])
share, by_app = span_bits(head, 7, 6, 0)
return share, by_app, b64str[2:acc_len + 2], b64str[acc_len + 2:]
def parse_io_options(bits, split=True):
"""
io选项在绑定设备和用户关系时需要提取，其他时候用不到
id格式的转换需要把io选项排除在外
:param split: io选项拆分
"""
assert isinstance(bits, int) and bits <= 0b111
if not split:
return bits
# 数据，短信，蓝牙
return span_bits(bits, 2, 0, 0)
def extract_tk_s(tk, ul):
"""
:param ul: 上传：短字符串
"""
b64str = base64.b64decode(str(tk))
head, acc_len = struct.unpack('>BB', b64str[:2])
share, by_app, is_ul = span_bits(head, 7, 5, 0)
#10分钟有效
ts_offset = 2 + acc_len
t = struct.unpack('>I', b64str[ts_offset:ts_offset + 4])[0]
if time.time() - t >= 600:
return None
return share, by_app, b64str[2:acc_len + 2], b64str[ts_offset + 4:]
def extract_tk_l(tk, ul):
"""
:param ul: 上传：长字符串
"""
logger.debug('extract tk begin')
if not tk or not isinstance(tk, str) or len(tk) <= 2:
logger.info('tk too short')
return None
tk = rc4_decrypt(tk, tk_pwd, a2b_hex)
logger.debug(u'tk = %r', tk)
rnd, val = tk[-2:]
val = rc4_decrypt(val, tk_pwd, None)
logger.debug('rnd = %r, val = %r', rnd, val)
rnd = struct.unpack('>B', rnd)[0]
val = struct.unpack('>B', val)[0]
logger.debug('rnd = %r, val = %r', rnd, val)
if rnd + 1 != val:
logger.warn('rnd={0} & val={1} unmatch'.format(rnd, val))
return None
head, acc_len = struct.unpack('>BB', tk[:2])
logger.debug('head = %r, acc_len = %r', head, acc_len)
if len(tk) != 2 + acc_len + 4 + MAX_FILENAME_LEN + 2:
logger.warn('tk len not ok')
return None
#10分钟有效
ts_offset = 2 + acc_len
t = struct.unpack('>I', tk[ts_offset:ts_offset + 4])[0]
now = time.time()
logger.debug('now = %r, t = %r', now, t)
if now - struct.unpack('>I', tk[ts_offset:ts_offset + 4])[0] >= 600:
logger.warn('tk timeout')
logger.debug('now = %r, t = %r', now, t)
return None
share, by_app, is_ul = span_bits(head, 7, 5, 0)
logger.debug('share = %r, by_app = %r, is_ul = %r, ul=%r', share, by_app,
is_ul, ul)
if is_ul != ul:
logger.warn('ul param invalid')
return None
logger.debug('extract tk end')
return share, by_app, tk[2:acc_len + 2], unpad(tk[ts_offset + 4:ts_offset +
4 + MAX_FILENAME_LEN])
