75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
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package middleware
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import (
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"net/http"
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"strings"
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"time"
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)
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// CORS 跨域中间件
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func CORS(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Access-Control-Allow-Origin", "*")
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w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, HEAD, PATCH")
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w.Header().Set("Access-Control-Allow-Headers", "Authorization, Content-Type, Accept, Origin, X-Requested-With")
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w.Header().Set("Access-Control-Expose-Headers", "Content-Length, Content-Type, X-Docker-Token")
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w.Header().Set("Access-Control-Max-Age", "86400")
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if r.Method == "OPTIONS" {
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w.WriteHeader(http.StatusOK)
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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// Logger 日志中间件
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func Logger(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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start := time.Now()
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wrapped := &responseWriter{ResponseWriter: w, statusCode: http.StatusOK}
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next.ServeHTTP(wrapped, r)
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// 简单日志输出
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_ = start
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})
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}
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type responseWriter struct {
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http.ResponseWriter
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statusCode int
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}
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func (rw *responseWriter) WriteHeader(code int) {
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rw.statusCode = code
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rw.ResponseWriter.WriteHeader(code)
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}
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// BasicAuth 基础认证中间件
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func BasicAuth(username, password string) func(http.Handler) http.Handler {
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return func(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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user, pass, ok := r.BasicAuth()
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if !ok || user != username || pass != password {
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w.Header().Set("WWW-Authenticate", `Basic realm="Admin Panel"`)
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http.Error(w, "Unauthorized", http.StatusUnauthorized)
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return
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}
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next.ServeHTTP(w, r)
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})
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}
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}
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// StripPrefix 安全地移除路径前缀
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func StripPrefix(prefix string, h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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p := strings.TrimPrefix(r.URL.Path, prefix)
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if p == r.URL.Path {
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http.NotFound(w, r)
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return
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}
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r.URL.Path = p
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h.ServeHTTP(w, r)
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})
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}
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