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[extractor/generic] Avoid catastrophic backtracking in KVS regex
Authored by: bashonly
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@ -2637,11 +2637,11 @@ def _extract_embeds(self, url, webpage, *, urlh=None, info_dict={}):
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# Look for generic KVS player (before json-ld bc of some urls that break otherwise)
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# Look for generic KVS player (before json-ld bc of some urls that break otherwise)
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found = self._search_regex((
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found = self._search_regex((
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r'<script\b[^>]+?\bsrc\s*=\s*(["\'])https?://(?:\S+?/)+kt_player\.js\?v=(?P<ver>\d+(?:\.\d+)+)\1[^>]*>',
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r'<script\b[^>]+?\bsrc\s*=\s*(["\'])https?://(?:(?!\1)[^?#])+/kt_player\.js\?v=(?P<ver>\d+(?:\.\d+)+)\1[^>]*>',
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r'kt_player\s*\(\s*(["\'])(?:(?!\1)[\w\W])+\1\s*,\s*(["\'])https?://(?:\S+?/)+kt_player\.swf\?v=(?P<ver>\d+(?:\.\d+)+)\2\s*,',
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r'kt_player\s*\(\s*(["\'])(?:(?!\1)[\w\W])+\1\s*,\s*(["\'])https?://(?:(?!\2)[^?#])+/kt_player\.swf\?v=(?P<ver>\d+(?:\.\d+)+)\2\s*,',
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), webpage, 'KVS player', group='ver', default=False)
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), webpage, 'KVS player', group='ver', default=False)
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if found:
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if found:
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self.report_detected('KWS Player')
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self.report_detected('KVS Player')
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if found.split('.')[0] not in ('4', '5', '6'):
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if found.split('.')[0] not in ('4', '5', '6'):
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self.report_warning(f'Untested major version ({found}) in player engine - download may fail.')
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self.report_warning(f'Untested major version ({found}) in player engine - download may fail.')
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return [self._extract_kvs(url, webpage, video_id)]
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return [self._extract_kvs(url, webpage, video_id)]
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