9634494ba9
P0: OpenAI SSE 错误消息 JSON 注入 — 使用 json.Marshal 替代 fmt.Sprintf P1: subscription 续期包裹 Ent 事务确保原子性 P1: CSP nonce 生成处理 crypto/rand 错误，失败降级为 unsafe-inline P1: singleflight 透传数据库真实错误，不再吞没为 not found P1: GetUserSubscriptionsWithProgress 提取 calculateProgress 消除 N+1 P2: billing_cache/gateway_helper 迁移到 math/rand/v2 消除全局锁争用 P2: generateRandomID 降级分支增加原子计数器防碰撞 P2: CORS 非白名单 origin 不再设置 Allow-Headers/Methods/Max-Age P2: Turnstile 验证移除 VerifyCode 空值跳过条件防绕过 P2: Redis Cluster Lua 脚本空 KEYS 添加兼容性警告注释 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
104 lines
2.7 KiB
Go
104 lines
2.7 KiB
Go
package middleware
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import (
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"log"
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"net/http"
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"strings"
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"sync"
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"github.com/Wei-Shaw/sub2api/internal/config"
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"github.com/gin-gonic/gin"
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)
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var corsWarningOnce sync.Once
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// CORS 跨域中间件
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func CORS(cfg config.CORSConfig) gin.HandlerFunc {
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allowedOrigins := normalizeOrigins(cfg.AllowedOrigins)
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allowAll := false
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for _, origin := range allowedOrigins {
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if origin == "*" {
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allowAll = true
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break
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}
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}
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wildcardWithSpecific := allowAll && len(allowedOrigins) > 1
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if wildcardWithSpecific {
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allowedOrigins = []string{"*"}
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}
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allowCredentials := cfg.AllowCredentials
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corsWarningOnce.Do(func() {
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if len(allowedOrigins) == 0 {
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log.Println("Warning: CORS allowed_origins not configured; cross-origin requests will be rejected.")
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}
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if wildcardWithSpecific {
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log.Println("Warning: CORS allowed_origins includes '*'; wildcard will take precedence over explicit origins.")
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}
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if allowAll && allowCredentials {
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log.Println("Warning: CORS allowed_origins set to '*', disabling allow_credentials.")
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}
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})
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if allowAll && allowCredentials {
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allowCredentials = false
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}
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allowedSet := make(map[string]struct{}, len(allowedOrigins))
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for _, origin := range allowedOrigins {
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if origin == "" || origin == "*" {
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continue
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}
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allowedSet[origin] = struct{}{}
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}
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return func(c *gin.Context) {
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origin := strings.TrimSpace(c.GetHeader("Origin"))
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originAllowed := allowAll
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if origin != "" && !allowAll {
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_, originAllowed = allowedSet[origin]
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}
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if originAllowed {
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if allowAll {
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c.Writer.Header().Set("Access-Control-Allow-Origin", "*")
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} else if origin != "" {
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c.Writer.Header().Set("Access-Control-Allow-Origin", origin)
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c.Writer.Header().Add("Vary", "Origin")
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}
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if allowCredentials {
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c.Writer.Header().Set("Access-Control-Allow-Credentials", "true")
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}
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c.Writer.Header().Set("Access-Control-Allow-Headers", "Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With, X-API-Key")
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c.Writer.Header().Set("Access-Control-Allow-Methods", "POST, OPTIONS, GET, PUT, DELETE, PATCH")
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c.Writer.Header().Set("Access-Control-Max-Age", "86400")
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}
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// 处理预检请求
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if c.Request.Method == http.MethodOptions {
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if originAllowed {
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c.AbortWithStatus(http.StatusNoContent)
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} else {
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c.AbortWithStatus(http.StatusForbidden)
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}
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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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func normalizeOrigins(values []string) []string {
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if len(values) == 0 {
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return nil
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}
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normalized := make([]string, 0, len(values))
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for _, value := range values {
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trimmed := strings.TrimSpace(value)
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if trimmed == "" {
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continue
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}
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normalized = append(normalized, trimmed)
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}
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return normalized
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}
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