package qiniu import ( "context" "encoding/base64" "errors" "fmt" "net/http" "net/url" "path" "path/filepath" "strings" "time" model "github.com/cloudreve/Cloudreve/v3/models" "github.com/cloudreve/Cloudreve/v3/pkg/filesystem/fsctx" "github.com/cloudreve/Cloudreve/v3/pkg/filesystem/response" "github.com/cloudreve/Cloudreve/v3/pkg/request" "github.com/cloudreve/Cloudreve/v3/pkg/serializer" "github.com/qiniu/go-sdk/v7/auth/qbox" "github.com/qiniu/go-sdk/v7/storage" ) // Driver 本地策略适配器 type Driver struct { Policy *model.Policy mac *qbox.Mac cfg *storage.Config bucket *storage.BucketManager } func NewDriver(policy *model.Policy) *Driver { if policy.OptionsSerialized.ChunkSize == 0 { policy.OptionsSerialized.ChunkSize = 25 << 20 // 25 MB } mac := qbox.NewMac(policy.AccessKey, policy.SecretKey) cfg := &storage.Config{UseHTTPS: true} return &Driver{ Policy: policy, mac: mac, cfg: cfg, bucket: storage.NewBucketManager(mac, cfg), } } // List 列出给定路径下的文件 func (handler *Driver) List(ctx context.Context, base string, recursive bool) ([]response.Object, error) { base = strings.TrimPrefix(base, "/") if base != "" { base += "/" } var ( delimiter string marker string objects []storage.ListItem commons []string ) if !recursive { delimiter = "/" } for { entries, folders, nextMarker, hashNext, err := handler.bucket.ListFiles( handler.Policy.BucketName, base, delimiter, marker, 1000) if err != nil { return nil, err } objects = append(objects, entries...) commons = append(commons, folders...) if !hashNext { break } marker = nextMarker } // 处理列取结果 res := make([]response.Object, 0, len(objects)+len(commons)) // 处理目录 for _, object := range commons { rel, err := filepath.Rel(base, object) if err != nil { continue } res = append(res, response.Object{ Name: path.Base(object), RelativePath: filepath.ToSlash(rel), Size: 0, IsDir: true, LastModify: time.Now(), }) } // 处理文件 for _, object := range objects { rel, err := filepath.Rel(base, object.Key) if err != nil { continue } res = append(res, response.Object{ Name: path.Base(object.Key), Source: object.Key, RelativePath: filepath.ToSlash(rel), Size: uint64(object.Fsize), IsDir: false, LastModify: time.Unix(object.PutTime/10000000, 0), }) } return res, nil } // 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.NewClient() resp, err := client.Request( "GET", downloadURL, nil, request.WithContext(ctx), request.WithHeader( http.Header{"Cache-Control": {"no-cache", "no-store", "must-revalidate"}}, ), request.WithTimeout(time.Duration(0)), ).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 fsctx.FileHeader) error { defer file.Close() // 凭证有效期 credentialTTL := model.GetIntSetting("upload_session_timeout", 3600) // 生成上传策略 fileInfo := file.Info() scope := handler.Policy.BucketName if fileInfo.Mode&fsctx.Overwrite == fsctx.Overwrite { scope = fmt.Sprintf("%s:%s", handler.Policy.BucketName, fileInfo.SavePath) } putPolicy := storage.PutPolicy{ // 指定为覆盖策略 Scope: scope, SaveKey: fileInfo.SavePath, ForceSaveKey: true, FsizeLimit: int64(fileInfo.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, fileInfo, int64(credentialTTL), false) 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.Credential, fileInfo.SavePath, file, int64(fileInfo.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)) } rets, err := handler.bucket.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 && ret.Code != 612 { 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, file *model.File) (*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") } thumb := fmt.Sprintf("%s?imageView2/1/w/%d/h/%d", file.SourceName, thumbSize[0], thumbSize[1]) return &response.ContentResponse{ Redirect: true, URL: handler.signSourceURL( ctx, thumb, 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 { deadline := time.Now().Add(time.Second * time.Duration(ttl)).Unix() sourceURL = storage.MakePrivateURL(handler.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, uploadSession *serializer.UploadSession, file fsctx.FileHeader) (*serializer.UploadCredential, error) { // 生成回调地址 siteURL := model.GetSiteURL() apiBaseURI, _ := url.Parse("/api/v3/callback/qiniu/" + uploadSession.Key) apiURL := siteURL.ResolveReference(apiBaseURI) // 创建上传策略 fileInfo := file.Info() putPolicy := storage.PutPolicy{ Scope: handler.Policy.BucketName, CallbackURL: apiURL.String(), CallbackBody: `{"size":$(fsize),"pic_info":"$(imageInfo.width),$(imageInfo.height)"}`, CallbackBodyType: "application/json", SaveKey: fileInfo.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 } credential, err := handler.getUploadCredential(ctx, putPolicy, fileInfo, ttl, true) if err != nil { return nil, fmt.Errorf("failed to init parts: %w", err) } credential.SessionID = uploadSession.Key credential.ChunkSize = handler.Policy.OptionsSerialized.ChunkSize uploadSession.UploadURL = credential.UploadURLs[0] uploadSession.Credential = credential.Credential return credential, nil } // getUploadCredential 签名上传策略并创建上传会话 func (handler *Driver) getUploadCredential(ctx context.Context, policy storage.PutPolicy, file *fsctx.UploadTaskInfo, TTL int64, resume bool) (*serializer.UploadCredential, error) { // 上传凭证 policy.Expires = uint64(TTL) upToken := policy.UploadToken(handler.mac) // 初始化分片上传 resumeUploader := storage.NewResumeUploaderV2(handler.cfg) upHost, err := resumeUploader.UpHost(handler.Policy.AccessKey, handler.Policy.BucketName) if err != nil { return nil, err } ret := &storage.InitPartsRet{} if resume { err = resumeUploader.InitParts(ctx, upToken, upHost, handler.Policy.BucketName, file.SavePath, true, ret) } return &serializer.UploadCredential{ UploadURLs: []string{upHost + "/buckets/" + handler.Policy.BucketName + "/objects/" + base64.URLEncoding.EncodeToString([]byte(file.SavePath)) + "/uploads/" + ret.UploadID}, Credential: upToken, }, err } // 取消上传凭证 func (handler Driver) CancelToken(ctx context.Context, uploadSession *serializer.UploadSession) error { resumeUploader := storage.NewResumeUploaderV2(handler.cfg) return resumeUploader.Client.CallWith(ctx, nil, "DELETE", uploadSession.UploadURL, http.Header{"Authorization": {"UpToken " + uploadSession.Credential}}, nil, 0) }