package qiniu import ( "context" "errors" "fmt" model "github.com/HFO4/cloudreve/models" "github.com/HFO4/cloudreve/pkg/filesystem/fsctx" "github.com/HFO4/cloudreve/pkg/filesystem/response" "github.com/HFO4/cloudreve/pkg/request" "github.com/HFO4/cloudreve/pkg/serializer" "github.com/qiniu/api.v7/v7/auth/qbox" "github.com/qiniu/api.v7/v7/storage" "io" "net/http" "net/url" "time" ) // Driver 本地策略适配器 type Driver struct { Policy *model.Policy } // Get 获取文件 func (handler Driver) Get(ctx context.Context, path string) (response.RSCloser, error) { // 给文件名加上随机参数以强制拉取 path = fmt.Sprintf("%s?v=%d", path, time.Now().UnixNano()) // 获取文件源地址 downloadURL, err := handler.Source( ctx, path, url.URL{}, int64(model.GetIntSetting("preview_timeout", 60)), false, 0, ) if err != nil { return nil, err } // 获取文件数据流 client := request.HTTPClient{} resp, err := client.Request( "GET", downloadURL, nil, request.WithContext(ctx), request.WithHeader( http.Header{"Cache-Control": {"no-cache", "no-store", "must-revalidate"}}, ), ).CheckHTTPResponse(200).GetRSCloser() if err != nil { return nil, err } resp.SetFirstFakeChunk() // 尝试自主获取文件大小 if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok { resp.SetContentLength(int64(file.Size)) } return resp, nil } // Put 将文件流保存到指定目录 func (handler Driver) Put(ctx context.Context, file io.ReadCloser, dst string, size uint64) error { defer file.Close() // 凭证有效期 credentialTTL := model.GetIntSetting("upload_credential_timeout", 3600) // 生成上传策略 putPolicy := storage.PutPolicy{ // 指定为覆盖策略 Scope: fmt.Sprintf("%s:%s", handler.Policy.BucketName, dst), SaveKey: dst, ForceSaveKey: true, FsizeLimit: int64(size), } // 是否开启了MIMEType限制 if handler.Policy.OptionsSerialized.MimeType != "" { putPolicy.MimeLimit = handler.Policy.OptionsSerialized.MimeType } // 生成上传凭证 token, err := handler.getUploadCredential(ctx, putPolicy, int64(credentialTTL)) if err != nil { return err } // 创建上传表单 cfg := storage.Config{} formUploader := storage.NewFormUploader(&cfg) ret := storage.PutRet{} putExtra := storage.PutExtra{ Params: map[string]string{}, } // 开始上传 err = formUploader.Put(ctx, &ret, token.Token, dst, file, int64(size), &putExtra) if err != nil { return err } return nil } // Delete 删除一个或多个文件, // 返回未删除的文件 func (handler Driver) Delete(ctx context.Context, files []string) ([]string, error) { // TODO 大于一千个文件需要分批发送 deleteOps := make([]string, 0, len(files)) for _, key := range files { deleteOps = append(deleteOps, storage.URIDelete(handler.Policy.BucketName, key)) } mac := qbox.NewMac(handler.Policy.AccessKey, handler.Policy.SecretKey) cfg := storage.Config{ UseHTTPS: true, } bucketManager := storage.NewBucketManager(mac, &cfg) rets, err := bucketManager.Batch(deleteOps) // 处理删除结果 if err != nil { failed := make([]string, 0, len(rets)) for k, ret := range rets { if ret.Code != 200 { failed = append(failed, files[k]) } } return failed, errors.New("删除失败") } return []string{}, nil } // Thumb 获取文件缩略图 func (handler Driver) Thumb(ctx context.Context, path string) (*response.ContentResponse, error) { var ( thumbSize = [2]uint{400, 300} ok = false ) if thumbSize, ok = ctx.Value(fsctx.ThumbSizeCtx).([2]uint); !ok { return nil, errors.New("无法获取缩略图尺寸设置") } path = fmt.Sprintf("%s?imageView2/1/w/%d/h/%d", path, thumbSize[0], thumbSize[1]) return &response.ContentResponse{ Redirect: true, URL: handler.signSourceURL( ctx, path, int64(model.GetIntSetting("preview_timeout", 60)), ), }, nil } // Source 获取外链URL func (handler Driver) Source( ctx context.Context, path string, baseURL url.URL, ttl int64, isDownload bool, speed int, ) (string, error) { // 尝试从上下文获取文件名 fileName := "" if file, ok := ctx.Value(fsctx.FileModelCtx).(model.File); ok { fileName = file.Name } // 加入下载相关设置 if isDownload { path = path + "?attname=" + url.PathEscape(fileName) } // 取得原始文件地址 return handler.signSourceURL(ctx, path, ttl), nil } func (handler Driver) signSourceURL(ctx context.Context, path string, ttl int64) string { var sourceURL string if handler.Policy.IsPrivate { mac := qbox.NewMac(handler.Policy.AccessKey, handler.Policy.SecretKey) deadline := time.Now().Add(time.Second * time.Duration(ttl)).Unix() sourceURL = storage.MakePrivateURL(mac, handler.Policy.BaseURL, path, deadline) } else { sourceURL = storage.MakePublicURL(handler.Policy.BaseURL, path) } return sourceURL } // Token 获取上传策略和认证Token func (handler Driver) Token(ctx context.Context, TTL int64, key string) (serializer.UploadCredential, error) { // 生成回调地址 siteURL := model.GetSiteURL() apiBaseURI, _ := url.Parse("/api/v3/callback/qiniu/" + key) apiURL := siteURL.ResolveReference(apiBaseURI) // 读取上下文中生成的存储路径 savePath, ok := ctx.Value(fsctx.SavePathCtx).(string) if !ok { return serializer.UploadCredential{}, errors.New("无法获取存储路径") } // 创建上传策略 putPolicy := storage.PutPolicy{ Scope: handler.Policy.BucketName, CallbackURL: apiURL.String(), CallbackBody: `{"name":"$(fname)","source_name":"$(key)","size":$(fsize),"pic_info":"$(imageInfo.width),$(imageInfo.height)"}`, CallbackBodyType: "application/json", SaveKey: savePath, ForceSaveKey: true, FsizeLimit: int64(handler.Policy.MaxSize), } // 是否开启了MIMEType限制 if handler.Policy.OptionsSerialized.MimeType != "" { putPolicy.MimeLimit = handler.Policy.OptionsSerialized.MimeType } return handler.getUploadCredential(ctx, putPolicy, TTL) } // getUploadCredential 签名上传策略 func (handler Driver) getUploadCredential(ctx context.Context, policy storage.PutPolicy, TTL int64) (serializer.UploadCredential, error) { policy.Expires = uint64(TTL) mac := qbox.NewMac(handler.Policy.AccessKey, handler.Policy.SecretKey) upToken := policy.UploadToken(mac) return serializer.UploadCredential{ Token: upToken, }, nil }