113 lines
4.1 KiB
Python
113 lines
4.1 KiB
Python
import time
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import random
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from typing import Optional
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def generate_fake_performance_timing(base_time: Optional[int] = None) -> dict[str, int]:
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"""
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生成伪造的浏览器性能时间戳数据
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Args:
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base_time: 基准时间戳（毫秒），默认使用当前时间
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Returns:
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dict: 包含所有性能时间戳的字典
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"""
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if base_time is None:
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base_time = int(time.time() * 1000)
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# 定义合理的时间间隔范围（毫秒）
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intervals = {
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'fetch': random.randint(1, 2),
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'domain_lookup_start': random.randint(3, 5),
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'domain_lookup': random.randint(5, 15),
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'connect': random.randint(50, 150),
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'ssl_offset': random.randint(30, 50),
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'request': random.randint(1, 5),
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'response': random.randint(20, 100),
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'response_end': random.randint(1, 3),
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'unload_start': random.randint(1, 3),
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'unload': random.randint(1, 5),
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'dom_loading': random.randint(1, 3),
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'dom_interactive': random.randint(50, 200),
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'dom_content_loaded': random.randint(1, 3),
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'load_event': random.randint(0, 5)
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}
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timing = {}
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# 按照时间顺序构建
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timing['navigationStart'] = base_time
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timing['fetchStart'] = timing['navigationStart'] + intervals['fetch']
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timing['domainLookupStart'] = timing['fetchStart'] + intervals['domain_lookup_start']
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timing['domainLookupEnd'] = timing['domainLookupStart'] + intervals['domain_lookup']
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timing['connectStart'] = timing['domainLookupEnd']
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timing['secureConnectionStart'] = timing['connectStart'] + intervals['ssl_offset']
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timing['connectEnd'] = timing['connectStart'] + intervals['connect']
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timing['requestStart'] = timing['connectEnd'] + intervals['request']
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timing['responseStart'] = timing['requestStart'] + intervals['response']
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timing['responseEnd'] = timing['responseStart'] + intervals['response_end']
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timing['unloadEventStart'] = timing['responseEnd'] + intervals['unload_start']
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timing['unloadEventEnd'] = timing['unloadEventStart'] + intervals['unload']
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timing['domLoading'] = timing['unloadEventEnd'] + intervals['dom_loading']
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timing['domInteractive'] = timing['domLoading'] + intervals['dom_interactive']
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timing['domContentLoadedEventStart'] = timing['domInteractive']
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timing['domContentLoadedEventEnd'] = timing['domInteractive'] + intervals['dom_content_loaded']
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timing['domComplete'] = timing['domContentLoadedEventEnd']
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timing['loadEventStart'] = timing['domComplete']
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timing['loadEventEnd'] = timing['loadEventStart'] + intervals['load_event']
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# 无重定向的情况
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timing['redirectStart'] = 0
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timing['redirectEnd'] = 0
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return timing
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def __ease_out_expo(sep):
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'''
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轨迹相关操作
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'''
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if sep == 1:
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return 1
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else:
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return 1 - pow(2, -10 * sep)
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def get_slide_track(distance):
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"""
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根据滑动距离生成滑动轨迹
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:param distance: 需要滑动的距离
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:return: 滑动轨迹<type 'list'>: [[x,y,t], ...]
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x: 已滑动的横向距离
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y: 已滑动的纵向距离, 除起点外, 均为0
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t: 滑动过程消耗的时间, 单位: 毫秒
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"""
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if not isinstance(distance, int) or distance < 0:
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raise ValueError(f"distance类型必须是大于等于0的整数: distance: {distance}, type: {type(distance)}")
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# 初始化轨迹列表
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slide_track = [
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[random.randint(-50, -10), random.randint(-50, -10), 0],
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[0, 0, 0],
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]
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# 共记录count次滑块位置信息
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count = 10 + int(distance / 2)
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# 初始化滑动时间
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t = random.randint(50, 100)
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# 记录上一次滑动的距离
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_x = 0
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_y = 0
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for i in range(count):
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# 已滑动的横向距离
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x = round(__ease_out_expo(i / count) * distance)
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# y = round(__ease_out_expo(i / count) * 14)
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# 滑动过程消耗的时间
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t += random.randint(10, 50)
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if x == _x:
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continue
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slide_track.append([x, _y, t])
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_x = x
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slide_track.append(slide_track[-1])
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return slide_track, slide_track[-1][2] |