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[utils] Move codes for handling eval() from iqiyi.py
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@ -18,7 +18,7 @@
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compat_urllib_parse_urlparse,
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)
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from ..utils import (
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base_n,
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decode_packed_codes,
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ExtractorError,
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ohdave_rsa_encrypt,
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remove_start,
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@ -130,28 +130,8 @@ class IqiyiSDKInterpreter(object):
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def __init__(self, sdk_code):
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self.sdk_code = sdk_code
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def decode_eval_codes(self):
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self.sdk_code = self.sdk_code[5:-3]
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mobj = re.search(
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r"'([^']+)',62,(\d+),'([^']+)'\.split\('\|'\),[^,]+,{}",
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self.sdk_code)
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obfucasted_code, count, symbols = mobj.groups()
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count = int(count)
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symbols = symbols.split('|')
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symbol_table = {}
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while count:
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count -= 1
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b62count = base_n(count, 62)
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symbol_table[b62count] = symbols[count] or b62count
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self.sdk_code = re.sub(
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r'\b(\w+)\b', lambda mobj: symbol_table[mobj.group(0)],
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obfucasted_code)
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def run(self, target, ip, timestamp):
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self.decode_eval_codes()
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self.sdk_code = decode_packed_codes(self.sdk_code)
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functions = re.findall(r'input=([a-zA-Z0-9]+)\(input', self.sdk_code)
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@ -2635,3 +2635,23 @@ def base_n(num, n, table=None):
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ret = table[num % n] + ret
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num = num // n
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return ret
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def decode_packed_codes(code):
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mobj = re.search(
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r"'([^']+)',(\d+),(\d+),'([^']+)'\.split\('\|'\),[^,]+,{}",
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code)
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obfucasted_code, base, count, symbols = mobj.groups()
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base = int(base)
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count = int(count)
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symbols = symbols.split('|')
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symbol_table = {}
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while count:
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count -= 1
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base_n_count = base_n(count, base)
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symbol_table[base_n_count] = symbols[count] or base_n_count
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return re.sub(
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r'\b(\w+)\b', lambda mobj: symbol_table[mobj.group(0)],
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obfucasted_code)
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