mirror of
https://github.com/DullJZ/s3-balance.git
synced 2026-07-13 08:21:35 +08:00
109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
package api
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import (
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"encoding/xml"
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"fmt"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"time"
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"github.com/DullJZ/s3-balance/internal/storage"
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)
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// sendXMLResponse 发送XML响应
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func (h *S3Handler) sendXMLResponse(w http.ResponseWriter, statusCode int, data interface{}) {
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w.Header().Set("Content-Type", "application/xml")
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w.WriteHeader(statusCode)
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encoder := xml.NewEncoder(w)
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encoder.Indent("", " ")
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// 写入XML声明
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w.Write([]byte(xml.Header))
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if err := encoder.Encode(data); err != nil {
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// 如果编码失败，记录错误
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http.Error(w, "Internal Server Error", http.StatusInternalServerError)
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}
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}
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// sendS3Error 发送S3错误响应
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func (h *S3Handler) sendS3Error(w http.ResponseWriter, code string, message string, resource string) {
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errorResp := ErrorResponse{
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Code: code,
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Message: message,
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Resource: resource,
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RequestID: fmt.Sprintf("%d", time.Now().UnixNano()),
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}
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statusCode := http.StatusBadRequest
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switch code {
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case "NoSuchBucket", "NoSuchKey":
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statusCode = http.StatusNotFound
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case "BucketAlreadyExists":
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statusCode = http.StatusConflict
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case "InvalidAccessKeyId", "SignatureDoesNotMatch":
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statusCode = http.StatusForbidden
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case "InternalError":
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statusCode = http.StatusInternalServerError
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case "InsufficientStorage":
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statusCode = http.StatusInsufficientStorage
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}
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h.sendXMLResponse(w, statusCode, errorResp)
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}
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// setObjectHeaders 设置对象响应头
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func (h *S3Handler) setObjectHeaders(w http.ResponseWriter, obj *storage.Object) {
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w.Header().Set("Content-Length", strconv.FormatInt(obj.Size, 10))
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w.Header().Set("Last-Modified", obj.UpdatedAt.Format(http.TimeFormat))
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w.Header().Set("ETag", fmt.Sprintf("\"%x\"", obj.ID))
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if obj.ContentType != "" {
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w.Header().Set("Content-Type", obj.ContentType)
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} else {
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w.Header().Set("Content-Type", "application/octet-stream")
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}
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}
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// s3AuthMiddleware S3认证中间件（简化版）
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func (h *S3Handler) s3AuthMiddleware(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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// 简化的认证实现，实际应该验证AWS Signature
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// 这里只做基本的header检查
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authHeader := r.Header.Get("Authorization")
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if authHeader == "" {
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// 允许匿名访问（用于测试）
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// 在生产环境中应该要求认证
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}
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next.ServeHTTP(w, r)
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})
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}
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// 辅助函数：解析S3路径
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func parseS3Path(requestPath string) (bucket string, key string) {
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requestPath = strings.TrimPrefix(requestPath, "/")
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parts := strings.SplitN(requestPath, "/", 2)
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if len(parts) > 0 {
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bucket = parts[0]
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}
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if len(parts) > 1 {
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key = parts[1]
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}
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return bucket, key
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}
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// 辅助函数：URL编码/解码
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func urlEncodePath(p string) string {
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return strings.ReplaceAll(url.QueryEscape(p), "+", "%20")
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}
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func urlDecodePath(p string) string {
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decoded, _ := url.QueryUnescape(p)
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return decoded
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}
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