53 lines
1.5 KiB
Go
53 lines
1.5 KiB
Go
package middleware
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import (
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"net/http"
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"github.com/gin-gonic/gin"
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)
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// CORS 跨域中间件 (含安全头) — 白名单模式
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func CORS(allowedOrigins []string) gin.HandlerFunc {
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return func(c *gin.Context) {
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origin := c.Request.Header.Get("Origin")
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// 白名单校验
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allowed := false
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if origin != "" {
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for _, o := range allowedOrigins {
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if o == origin {
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allowed = true
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break
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}
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}
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}
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// 仅对白名单中的 origin 设置 CORS 头
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if allowed {
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c.Header("Access-Control-Allow-Origin", origin)
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c.Header("Access-Control-Allow-Credentials", "true")
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}
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c.Header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, PATCH, OPTIONS")
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c.Header("Access-Control-Allow-Headers", "Origin, Content-Type, Authorization, X-Request-ID")
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c.Header("Access-Control-Max-Age", "86400")
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// 安全头
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c.Header("X-Content-Type-Options", "nosniff")
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c.Header("X-Frame-Options", "DENY")
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c.Header("X-XSS-Protection", "1; mode=block")
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c.Header("Referrer-Policy", "strict-origin-when-cross-origin")
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c.Header("Permissions-Policy", "camera=(), microphone=(), geolocation=()")
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c.Header("Content-Security-Policy", "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; connect-src 'self' https:; font-src 'self'; object-src 'none'")
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c.Header("Strict-Transport-Security", "max-age=31536000; includeSubDomains")
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// 预检请求
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if c.Request.Method == http.MethodOptions {
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c.AbortWithStatus(http.StatusNoContent)
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return
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}
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c.Next()
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}
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}
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