55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
package middleware
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import (
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"carrotskin/pkg/config"
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"github.com/gin-gonic/gin"
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)
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// CORS 跨域中间件
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func CORS(cfg *config.Config) gin.HandlerFunc {
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// 从注入的配置读取 CORS 设置
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allowedOrigins := cfg.Security.AllowedOrigins
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if len(allowedOrigins) == 0 {
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// 默认允许所有来源
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allowedOrigins = []string{"*"}
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}
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isTestEnv := cfg.IsTestEnvironment()
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return gin.HandlerFunc(func(c *gin.Context) {
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origin := c.GetHeader("Origin")
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// 检查是否允许该来源
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allowOrigin := "*"
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// 测试环境下强制使用 *，否则按配置处理
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if !isTestEnv && len(allowedOrigins) > 0 && allowedOrigins[0] != "*" {
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allowOrigin = ""
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for _, allowed := range allowedOrigins {
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if allowed == origin || allowed == "*" {
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allowOrigin = origin
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break
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}
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}
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}
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if allowOrigin != "" {
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c.Header("Access-Control-Allow-Origin", allowOrigin)
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// 只有在非通配符模式下才允许credentials
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if allowOrigin != "*" {
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c.Header("Access-Control-Allow-Credentials", "true")
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}
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}
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c.Header("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With")
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c.Header("Access-Control-Allow-Methods", "POST, OPTIONS, GET, PUT, DELETE")
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c.Header("Access-Control-Max-Age", "86400") // 缓存预检请求结果24小时
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if c.Request.Method == "OPTIONS" {
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c.AbortWithStatus(204)
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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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