41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
package middleware
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import (
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"github.com/gin-gonic/gin"
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)
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// SecurityHeaders 安全响应头中间件
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// 为所有响应添加安全头，降低 XSS、点击劫持、MIME 嗅探等风险。
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// secure=true 时额外下发 HSTS（仅 HTTPS origin 合法，HTTP 环境发 HSTS 属于误导）。
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func SecurityHeaders(secure bool) gin.HandlerFunc {
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return func(c *gin.Context) {
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// CSP：限制资源加载来源，降低 XSS 危害
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c.Header("Content-Security-Policy",
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"default-src 'self'; "+
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"script-src 'self' 'unsafe-inline'; "+
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"style-src 'self' 'unsafe-inline'; "+
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"img-src 'self' data: https:; "+
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"font-src 'self' data:; "+
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"connect-src 'self'; "+
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"frame-ancestors 'none'; "+
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"base-uri 'self'; "+
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"form-action 'self'")
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// HSTS：仅 HTTPS origin 下发。HTTP 响应发 HSTS 是无效且误导的。
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if secure {
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c.Header("Strict-Transport-Security", "max-age=31536000; includeSubDomains; preload")
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}
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// 点击劫持防护
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c.Header("X-Frame-Options", "DENY")
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// MIME 嗅探防护
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c.Header("X-Content-Type-Options", "nosniff")
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// 控制 Referer 信息泄露
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c.Header("Referrer-Policy", "strict-origin-when-cross-origin")
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c.Next()
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}
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}
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