123 lines
4.1 KiB
Python
123 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"] = (
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timing["fetchStart"] + intervals["domain_lookup_start"]
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)
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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"] = (
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timing["domInteractive"] + intervals["dom_content_loaded"]
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)
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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(
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f"distance类型必须是大于等于0的整数: distance: {distance}, type: {type(distance)}"
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)
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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]
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