78 lines
2.8 KiB
JavaScript
78 lines
2.8 KiB
JavaScript
// 生成随机请求头，用于绕过防盗链检测
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export function getRandomHeaders(imageUrl) {
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// 随机浏览器版本
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const chromeVersions = ['120.0.0.0', '121.0.0.0', '122.0.0.0', '123.0.0.0', '119.0.0.0']
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const edgeVersions = ['120.0.0.0', '121.0.0.0', '122.0.0.0', '119.0.0.0']
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const firefoxVersions = ['121.0', '122.0', '123.0', '120.0', '119.0']
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// 随机操作系统
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const platforms = [
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{ os: 'Windows NT 10.0; Win64; x64', platform: 'Windows' },
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{ os: 'Windows NT 11.0; Win64; x64', platform: 'Windows' },
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{ os: 'Macintosh; Intel Mac OS X 10_15_7', platform: 'macOS' },
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{ os: 'Macintosh; Intel Mac OS X 13_0_0', platform: 'macOS' },
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{ os: 'X11; Linux x86_64', platform: 'Linux' }
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]
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// 随机语言
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const languages = [
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'zh-CN,zh;q=0.9,en;q=0.8',
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'en-US,en;q=0.9',
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'zh-TW,zh;q=0.9,en;q=0.8',
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'ja-JP,ja;q=0.9,en;q=0.8',
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'en-GB,en;q=0.9'
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]
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// 随机选择
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const randomChoice = (arr) => arr[Math.floor(Math.random() * arr.length)]
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const platform = randomChoice(platforms)
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const language = randomChoice(languages)
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// 随机选择浏览器类型
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const browserType = Math.random()
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let userAgent, secChUa
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if (browserType < 0.6) {
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// Chrome
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const version = randomChoice(chromeVersions)
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const majorVersion = version.split('.')[0]
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userAgent = `Mozilla/5.0 (${platform.os}) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/${version} Safari/537.36`
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secChUa = `"Not_A Brand";v="8", "Chromium";v="${majorVersion}", "Google Chrome";v="${majorVersion}"`
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} else if (browserType < 0.85) {
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// Edge
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const version = randomChoice(edgeVersions)
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const majorVersion = version.split('.')[0]
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userAgent = `Mozilla/5.0 (${platform.os}) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/${version} Safari/537.36 Edg/${version}`
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secChUa = `"Not_A Brand";v="8", "Chromium";v="${majorVersion}", "Microsoft Edge";v="${majorVersion}"`
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} else {
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// Firefox
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const version = randomChoice(firefoxVersions)
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userAgent = `Mozilla/5.0 (${platform.os}; rv:${version}) Gecko/20100101 Firefox/${version}`
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secChUa = null // Firefox 不使用 Sec-Ch-Ua
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}
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const headers = {
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'User-Agent': userAgent,
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'Accept': 'image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8',
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'Accept-Language': language,
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'Accept-Encoding': 'gzip, deflate, br',
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'Cache-Control': 'no-cache',
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'Pragma': 'no-cache',
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'Sec-Fetch-Dest': 'image',
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'Sec-Fetch-Mode': 'no-cors',
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'Sec-Fetch-Site': 'cross-site',
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// 使用图片URL的origin作为Referer，绕过防盗链
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'Referer': imageUrl.origin + '/',
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'Origin': imageUrl.origin
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}
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// 只有非 Firefox 浏览器才添加 Sec-Ch-Ua 头
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if (secChUa) {
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headers['Sec-Ch-Ua'] = secChUa
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headers['Sec-Ch-Ua-Mobile'] = '?0'
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headers['Sec-Ch-Ua-Platform'] = `"${platform.platform}"`
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}
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return headers
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}
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