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fix: cannot overwrite file to slave policy / fix: remove lock system for webdav to resolve Windows Explorer issue.

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This commit is contained in:
HFO4 2022-04-22 15:57:21 +08:00
parent f8b7e086ba
commit b1803fa51f
5 changed files with 246 additions and 214 deletions
pkg
filesystem/driver/remote
client.gohandler.go
webdav
webdav.go
routers/controllers
webdav.go
service/explorer
slave.go

14
pkg/filesystem/driver/remote/client.go
View file

@ -30,7 +30,7 @@ const (
// Client to operate uploading to remote slave server
type Client interface {
// CreateUploadSession creates remote upload session
CreateUploadSession(ctx context.Context, session *serializer.UploadSession, ttl int64) error
CreateUploadSession(ctx context.Context, session *serializer.UploadSession, ttl int64, overwrite bool) error
// GetUploadURL signs an url for uploading file
GetUploadURL(ttl int64, sessionID string) (string, string, error)
// Upload uploads file to remote server
@ -82,12 +82,11 @@ func (c *remoteClient) Upload(ctx context.Context, file fsctx.FileHeader) error
}
// Create upload session
if err := c.CreateUploadSession(ctx, session, int64(ttl)); err != nil {
overwrite := fileInfo.Mode&fsctx.Overwrite == fsctx.Overwrite
if err := c.CreateUploadSession(ctx, session, int64(ttl), overwrite); err != nil {
return fmt.Errorf("failed to create upload session: %w", err)
}
overwrite := fileInfo.Mode&fsctx.Overwrite == fsctx.Overwrite
// Initial chunk groups
chunks := chunk.NewChunkGroup(file, c.policy.OptionsSerialized.ChunkSize, &backoff.ConstantBackoff{
Max: model.GetIntSetting("chunk_retries", 5),
@ -130,10 +129,11 @@ func (c *remoteClient) DeleteUploadSession(ctx context.Context, sessionID string
return nil
}
func (c *remoteClient) CreateUploadSession(ctx context.Context, session *serializer.UploadSession, ttl int64) error {
func (c *remoteClient) CreateUploadSession(ctx context.Context, session *serializer.UploadSession, ttl int64, overwrite bool) error {
reqBodyEncoded, err := json.Marshal(map[string]interface{}{
"session": session,
"ttl": ttl,
"session": session,
"ttl": ttl,
"overwrite": overwrite,
})
if err != nil {
return err

2
pkg/filesystem/driver/remote/handler.go
View file

@ -281,7 +281,7 @@ func (handler *Driver) Token(ctx context.Context, ttl int64, uploadSession *seri
// 在从机端创建上传会话
uploadSession.Callback = apiURL.String()
if err := handler.uploadClient.CreateUploadSession(ctx, uploadSession, ttl); err != nil {
if err := handler.uploadClient.CreateUploadSession(ctx, uploadSession, ttl, false); err != nil {
return nil, err
}

435
pkg/webdav/webdav.go
View file

@ -14,6 +14,7 @@ import (
"path"
"strconv"
"strings"
"sync"
"time"
model "github.com/cloudreve/Cloudreve/v3/models"
@ -30,6 +31,7 @@ type Handler struct {
// Logger is an optional error logger. If non-nil, it will be called
// for all HTTP requests.
Logger func(*http.Request, error)
Mutex *sync.Mutex
}
func (h *Handler) stripPrefix(p string, uid uint) (string, int, error) {
@ -60,13 +62,19 @@ func isPathExist(ctx context.Context, fs *filesystem.FileSystem, path string) (b
func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, fs *filesystem.FileSystem) {
status, err := http.StatusBadRequest, errUnsupportedMethod
h.Mutex.Lock()
if h.LockSystem == nil {
h.Mutex.Unlock()
status, err = http.StatusInternalServerError, errNoLockSystem
} else {
// 检查并新建LockSystem
if _, ok := h.LockSystem[fs.User.ID]; !ok {
// 检查并新建 LockSystem
ls, ok := h.LockSystem[fs.User.ID]
if !ok {
h.LockSystem[fs.User.ID] = NewMemLS()
ls = h.LockSystem[fs.User.ID]
}
h.Mutex.Unlock()
switch r.Method {
case "OPTIONS":
status, err = h.handleOptions(w, r, fs)
@ -81,13 +89,13 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, fs *filesyst
case "COPY", "MOVE":
status, err = h.handleCopyMove(w, r, fs)
case "LOCK":
status, err = h.handleLock(w, r, fs)
status, err = h.handleLock(w, r, fs, ls)
case "UNLOCK":
status, err = h.handleUnlock(w, r, fs)
status, err = h.handleUnlock(w, r, fs, ls)
case "PROPFIND":
status, err = h.handlePropfind(w, r, fs)
status, err = h.handlePropfind(w, r, fs, ls)
case "PROPPATCH":
status, err = h.handleProppatch(w, r, fs)
status, err = h.handleProppatch(w, r, fs, ls)
}
}
@ -103,98 +111,111 @@ func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request, fs *filesyst
}
// OK
func (h *Handler) lock(now time.Time, root string, fs *filesystem.FileSystem) (token string, status int, err error) {
token, err = h.LockSystem[fs.User.ID].Create(now, LockDetails{
Root: root,
Duration: infiniteTimeout,
ZeroDepth: true,
})
if err != nil {
if err == ErrLocked {
return "", StatusLocked, err
}
return "", http.StatusInternalServerError, err
}
return token, 0, nil
func (h *Handler) lock(now time.Time, root string, fs *filesystem.FileSystem, ls LockSystem) (token string, status int, err error) {
//token, err = ls.Create(now, LockDetails{
// Root: root,
// Duration: infiniteTimeout,
// ZeroDepth: true,
//})
//if err != nil {
// if err == ErrLocked {
// return "", StatusLocked, err
// }
// return "", http.StatusInternalServerError, err
//}
return fmt.Sprintf("%d", time.Now().Unix()), 0, nil
}
// ok
func (h *Handler) confirmLocks(r *http.Request, src, dst string, fs *filesystem.FileSystem) (release func(), status int, err error) {
hdr := r.Header.Get("If")
if hdr == "" {
// An empty If header means that the client hasn't previously created locks.
// Even if this client doesn't care about locks, we still need to check that
// the resources aren't locked by another client, so we create temporary
// locks that would conflict with another client's locks. These temporary
// locks are unlocked at the end of the HTTP request.
now, srcToken, dstToken := time.Now(), "", ""
if src != "" {
srcToken, status, err = h.lock(now, src, fs)
if err != nil {
return nil, status, err
}
}
if dst != "" {
dstToken, status, err = h.lock(now, dst, fs)
if err != nil {
if srcToken != "" {
h.LockSystem[fs.User.ID].Unlock(now, srcToken)
}
return nil, status, err
}
}
return func() {
if dstToken != "" {
h.LockSystem[fs.User.ID].Unlock(now, dstToken)
}
if srcToken != "" {
h.LockSystem[fs.User.ID].Unlock(now, srcToken)
}
}, 0, nil
}
//hdr := r.Header.Get("If")
//h.Mutex.Lock()
//ls,ok := h.LockSystem[fs.User.ID]
//h.Mutex.Unlock()
//if !ok{
// return nil, http.StatusInternalServerError, errNoLockSystem
//}
//
//if hdr == "" {
// // An empty If header means that the client hasn't previously created locks.
// // Even if this client doesn't care about locks, we still need to check that
// // the resources aren't locked by another client, so we create temporary
// // locks that would conflict with another client's locks. These temporary
// // locks are unlocked at the end of the HTTP request.
// now, srcToken, dstToken := time.Now(), "", ""
// if src != "" {
// srcToken, status, err = h.lock(now, src, fs,ls)
// if err != nil {
// return nil, status, err
// }
// }
// if dst != "" {
// dstToken, status, err = h.lock(now, dst, fs,ls)
// if err != nil {
// if srcToken != "" {
// ls.Unlock(now, srcToken)
// }
// return nil, status, err
// }
// }
//
// return func() {
// if dstToken != "" {
// ls.Unlock(now, dstToken)
// }
// if srcToken != "" {
// ls.Unlock(now, srcToken)
// }
// }, 0, nil
//}
//
//ih, ok := parseIfHeader(hdr)
//if !ok {
// return nil, http.StatusBadRequest, errInvalidIfHeader
//}
//// ih is a disjunction (OR) of ifLists, so any ifList will do.
//for _, l := range ih.lists {
// lsrc := l.resourceTag
// if lsrc == "" {
// lsrc = src
// } else {
// u, err := url.Parse(lsrc)
// if err != nil {
// continue
// }
// //if u.Host != r.Host {
// // continue
// //}
// lsrc, status, err = h.stripPrefix(u.Path, fs.User.ID)
// if err != nil {
// return nil, status, err
// }
// }
// release, err = ls.Confirm(
// time.Now(),
// lsrc,
// dst,
// l.conditions...,
// )
// if err == ErrConfirmationFailed {
// continue
// }
// if err != nil {
// return nil, http.StatusInternalServerError, err
// }
// return release, 0, nil
//}
//// Section 10.4.1 says that "If this header is evaluated and all state lists
//// fail, then the request must fail with a 412 (Precondition Failed) status."
//// We follow the spec even though the cond_put_corrupt_token test case from
//// the litmus test warns on seeing a 412 instead of a 423 (Locked).
//return nil, http.StatusPreconditionFailed, ErrLocked
ih, ok := parseIfHeader(hdr)
if !ok {
return nil, http.StatusBadRequest, errInvalidIfHeader
}
// ih is a disjunction (OR) of ifLists, so any ifList will do.
for _, l := range ih.lists {
lsrc := l.resourceTag
if lsrc == "" {
lsrc = src
} else {
u, err := url.Parse(lsrc)
if err != nil {
continue
}
//if u.Host != r.Host {
// continue
//}
lsrc, status, err = h.stripPrefix(u.Path, fs.User.ID)
if err != nil {
return nil, status, err
}
}
release, err = h.LockSystem[fs.User.ID].Confirm(
time.Now(),
lsrc,
dst,
l.conditions...,
)
if err == ErrConfirmationFailed {
continue
}
if err != nil {
return nil, http.StatusInternalServerError, err
}
return release, 0, nil
}
// Section 10.4.1 says that "If this header is evaluated and all state lists
// fail, then the request must fail with a 412 (Precondition Failed) status."
// We follow the spec even though the cond_put_corrupt_token test case from
// the litmus test warns on seeing a 412 instead of a 423 (Locked).
return nil, http.StatusPreconditionFailed, ErrLocked
return func() {
}, 0, nil
}
//OK
@ -245,7 +266,7 @@ func (h *Handler) handleGetHeadPost(w http.ResponseWriter, r *http.Request, fs *
return http.StatusInternalServerError, err
}
etag, err := findETag(ctx, fs, h.LockSystem[fs.User.ID], reqPath, &fs.FileTarget[0])
etag, err := findETag(ctx, fs, nil, reqPath, &fs.FileTarget[0])
if err != nil {
return http.StatusInternalServerError, err
}
@ -271,6 +292,7 @@ func (h *Handler) handleDelete(w http.ResponseWriter, r *http.Request, fs *files
if err != nil {
return status, err
}
release, status, err := h.confirmLocks(r, reqPath, "", fs)
if err != nil {
return status, err
@ -373,7 +395,7 @@ func (h *Handler) handlePut(w http.ResponseWriter, r *http.Request, fs *filesyst
return http.StatusMethodNotAllowed, err
}
etag, err := findETag(ctx, fs, h.LockSystem[fs.User.ID], reqPath, fileData.Model.(*model.File))
etag, err := findETag(ctx, fs, nil, reqPath, fileData.Model.(*model.File))
if err != nil {
return http.StatusInternalServerError, err
}
@ -494,130 +516,137 @@ func (h *Handler) handleCopyMove(w http.ResponseWriter, r *http.Request, fs *fil
}
// OK
func (h *Handler) handleLock(w http.ResponseWriter, r *http.Request, fs *filesystem.FileSystem) (retStatus int, retErr error) {
func (h *Handler) handleLock(w http.ResponseWriter, r *http.Request, fs *filesystem.FileSystem, ls LockSystem) (retStatus int, retErr error) {
defer fs.Recycle()
duration, err := parseTimeout(r.Header.Get("Timeout"))
if err != nil {
return http.StatusBadRequest, err
}
li, status, err := readLockInfo(r.Body)
reqPath, status, err := h.stripPrefix(r.URL.Path, fs.User.ID)
if err != nil {
return status, err
}
//ctx := r.Context()
token, ld, now, created := "", LockDetails{}, time.Now(), false
if li == (lockInfo{}) {
// An empty lockInfo means to refresh the lock.
ih, ok := parseIfHeader(r.Header.Get("If"))
if !ok {
return http.StatusBadRequest, errInvalidIfHeader
}
if len(ih.lists) == 1 && len(ih.lists[0].conditions) == 1 {
token = ih.lists[0].conditions[0].Token
}
if token == "" {
return http.StatusBadRequest, errInvalidLockToken
}
ld, err = h.LockSystem[fs.User.ID].Refresh(now, token, duration)
if err != nil {
if err == ErrNoSuchLock {
return http.StatusPreconditionFailed, err
}
return http.StatusInternalServerError, err
}
////ctx := r.Context()
//token, ld, now, created := "", LockDetails{}, time.Now(), false
//if li == (lockInfo{}) {
// // An empty lockInfo means to refresh the lock.
// ih, ok := parseIfHeader(r.Header.Get("If"))
// if !ok {
// return http.StatusBadRequest, errInvalidIfHeader
// }
// if len(ih.lists) == 1 && len(ih.lists[0].conditions) == 1 {
// token = ih.lists[0].conditions[0].Token
// }
// if token == "" {
// return http.StatusBadRequest, errInvalidLockToken
// }
// ld, err = ls.Refresh(now, token, duration)
// if err != nil {
// if err == ErrNoSuchLock {
// return http.StatusPreconditionFailed, err
// }
// return http.StatusInternalServerError, err
// }
//
//} else {
// // Section 9.10.3 says that "If no Depth header is submitted on a LOCK request,
// // then the request MUST act as if a "Depth:infinity" had been submitted."
// depth := infiniteDepth
// if hdr := r.Header.Get("Depth"); hdr != "" {
// depth = parseDepth(hdr)
// if depth != 0 && depth != infiniteDepth {
// // Section 9.10.3 says that "Values other than 0 or infinity must not be
// // used with the Depth header on a LOCK method".
// return http.StatusBadRequest, errInvalidDepth
// }
// }
// reqPath, status, err := h.stripPrefix(r.URL.Path, fs.User.ID)
// if err != nil {
// return status, err
// }
// ld = LockDetails{
// Root: reqPath,
// Duration: duration,
// OwnerXML: li.Owner.InnerXML,
// ZeroDepth: depth == 0,
// }
// token, err = ls.Create(now, ld)
// if err != nil {
// if err == ErrLocked {
// return StatusLocked, err
// }
// return http.StatusInternalServerError, err
// }
// defer func() {
// if retErr != nil {
// ls.Unlock(now, token)
// }
// }()
//
// // Create the resource if it didn't previously exist.
// //if _, err := h.FileSystem.Stat(ctx, reqPath); err != nil {
// // f, err := h.FileSystem.OpenFile(ctx, reqPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
// // if err != nil {
// // // TODO: detect missing intermediate dirs and return http.StatusConflict?
// // return http.StatusInternalServerError, err
// // }
// // f.Close()
// // created = true
// //}
//
// // http://www.webdav.org/specs/rfc4918.html#HEADER_Lock-Token says that the
// // Lock-Token value is a Coded-URL. We add angle brackets.
// w.Header().Set("Lock-Token", "<"+token+">")
//}
//
//w.Header().Set("Content-Type", "application/xml; charset=utf-8")
//if created {
// // This is "w.WriteHeader(http.StatusCreated)" and not "return
// // http.StatusCreated, nil" because we write our own (XML) response to w
// // and Handler.ServeHTTP would otherwise write "Created".
// w.WriteHeader(http.StatusCreated)
//}
} else {
// Section 9.10.3 says that "If no Depth header is submitted on a LOCK request,
// then the request MUST act as if a "Depth:infinity" had been submitted."
depth := infiniteDepth
if hdr := r.Header.Get("Depth"); hdr != "" {
depth = parseDepth(hdr)
if depth != 0 && depth != infiniteDepth {
// Section 9.10.3 says that "Values other than 0 or infinity must not be
// used with the Depth header on a LOCK method".
return http.StatusBadRequest, errInvalidDepth
}
}
reqPath, status, err := h.stripPrefix(r.URL.Path, fs.User.ID)
if err != nil {
return status, err
}
ld = LockDetails{
Root: reqPath,
Duration: duration,
OwnerXML: li.Owner.InnerXML,
ZeroDepth: depth == 0,
}
token, err = h.LockSystem[fs.User.ID].Create(now, ld)
if err != nil {
if err == ErrLocked {
return StatusLocked, err
}
return http.StatusInternalServerError, err
}
defer func() {
if retErr != nil {
h.LockSystem[fs.User.ID].Unlock(now, token)
}
}()
// Create the resource if it didn't previously exist.
//if _, err := h.FileSystem.Stat(ctx, reqPath); err != nil {
// f, err := h.FileSystem.OpenFile(ctx, reqPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
// if err != nil {
// // TODO: detect missing intermediate dirs and return http.StatusConflict?
// return http.StatusInternalServerError, err
// }
// f.Close()
// created = true
//}
// http://www.webdav.org/specs/rfc4918.html#HEADER_Lock-Token says that the
// Lock-Token value is a Coded-URL. We add angle brackets.
w.Header().Set("Lock-Token", "<"+token+">")
}
w.Header().Set("Content-Type", "application/xml; charset=utf-8")
if created {
// This is "w.WriteHeader(http.StatusCreated)" and not "return
// http.StatusCreated, nil" because we write our own (XML) response to w
// and Handler.ServeHTTP would otherwise write "Created".
w.WriteHeader(http.StatusCreated)
}
writeLockInfo(w, token, ld)
writeLockInfo(w, fmt.Sprintf("%d", time.Now().UnixNano()), LockDetails{
Duration: duration,
OwnerXML: fs.User.Email,
Root: reqPath,
})
return 0, nil
}
// OK
func (h *Handler) handleUnlock(w http.ResponseWriter, r *http.Request, fs *filesystem.FileSystem) (status int, err error) {
func (h *Handler) handleUnlock(w http.ResponseWriter, r *http.Request, fs *filesystem.FileSystem, ls LockSystem) (status int, err error) {
defer fs.Recycle()
return http.StatusNoContent, err
// http://www.webdav.org/specs/rfc4918.html#HEADER_Lock-Token says that the
// Lock-Token value is a Coded-URL. We strip its angle brackets.
t := r.Header.Get("Lock-Token")
if len(t) < 2 || t[0] != '<' || t[len(t)-1] != '>' {
return http.StatusBadRequest, errInvalidLockToken
}
t = t[1 : len(t)-1]
switch err = h.LockSystem[fs.User.ID].Unlock(time.Now(), t); err {
case nil:
return http.StatusNoContent, err
case ErrForbidden:
return http.StatusForbidden, err
case ErrLocked:
return StatusLocked, err
case ErrNoSuchLock:
return http.StatusConflict, err
default:
return http.StatusInternalServerError, err
}
//// http://www.webdav.org/specs/rfc4918.html#HEADER_Lock-Token says that the
//// Lock-Token value is a Coded-URL. We strip its angle brackets.
//t := r.Header.Get("Lock-Token")
//if len(t) < 2 || t[0] != '<' || t[len(t)-1] != '>' {
// return http.StatusBadRequest, errInvalidLockToken
//}
//t = t[1 : len(t)-1]
//
//switch err = ls.Unlock(time.Now(), t); err {
//case nil:
// return http.StatusNoContent, err
//case ErrForbidden:
// return http.StatusForbidden, err
//case ErrLocked:
// return StatusLocked, err
//case ErrNoSuchLock:
// return http.StatusConflict, err
//default:
// return http.StatusInternalServerError, err
//}
}
// OK
func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request, fs *filesystem.FileSystem) (status int, err error) {
func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request, fs *filesystem.FileSystem, ls LockSystem) (status int, err error) {
defer fs.Recycle()
reqPath, status, err := h.stripPrefix(r.URL.Path, fs.User.ID)
@ -651,7 +680,7 @@ func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request, fs *fil
}
var pstats []Propstat
if pf.Propname != nil {
pnames, err := propnames(ctx, fs, h.LockSystem[fs.User.ID], info)
pnames, err := propnames(ctx, fs, ls, info)
if err != nil {
return err
}
@ -661,9 +690,9 @@ func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request, fs *fil
}
pstats = append(pstats, pstat)
} else if pf.Allprop != nil {
pstats, err = allprop(ctx, fs, h.LockSystem[fs.User.ID], info, pf.Prop)
pstats, err = allprop(ctx, fs, ls, info, pf.Prop)
} else {
pstats, err = props(ctx, fs, h.LockSystem[fs.User.ID], info, pf.Prop)
pstats, err = props(ctx, fs, ls, info, pf.Prop)
}
if err != nil {
return err
@ -686,7 +715,7 @@ func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request, fs *fil
return 0, nil
}
func (h *Handler) handleProppatch(w http.ResponseWriter, r *http.Request, fs *filesystem.FileSystem) (status int, err error) {
func (h *Handler) handleProppatch(w http.ResponseWriter, r *http.Request, fs *filesystem.FileSystem, ls LockSystem) (status int, err error) {
defer fs.Recycle()
reqPath, status, err := h.stripPrefix(r.URL.Path, fs.User.ID)
@ -708,7 +737,7 @@ func (h *Handler) handleProppatch(w http.ResponseWriter, r *http.Request, fs *fi
if err != nil {
return status, err
}
pstats, err := patch(ctx, fs, h.LockSystem[fs.User.ID], reqPath, patches)
pstats, err := patch(ctx, fs, ls, reqPath, patches)
if err != nil {
return http.StatusInternalServerError, err
}

2
routers/controllers/webdav.go
View file

@ -7,6 +7,7 @@ import (
"github.com/cloudreve/Cloudreve/v3/pkg/webdav"
"github.com/cloudreve/Cloudreve/v3/service/setting"
"github.com/gin-gonic/gin"
"sync"
)
var handler *webdav.Handler
@ -15,6 +16,7 @@ func init() {
handler = &webdav.Handler{
Prefix: "/dav",
LockSystem: make(map[uint]webdav.LockSystem),
Mutex: &sync.Mutex{},
}
}

7
service/explorer/slave.go
View file

@ -167,13 +167,14 @@ func CreateTransferTask(c *gin.Context, req *serializer.SlaveTransferReq) serial
// SlaveListService 从机上传会话服务
type SlaveCreateUploadSessionService struct {
Session serializer.UploadSession `json:"session" binding:"required"`
TTL int64 `json:"ttl"`
Session serializer.UploadSession `json:"session" binding:"required"`
TTL int64 `json:"ttl"`
Overwrite bool `json:"overwrite"`
}
// Create 从机创建上传会话
func (service *SlaveCreateUploadSessionService) Create(ctx context.Context, c *gin.Context) serializer.Response {
if util.Exists(service.Session.SavePath) {
if !service.Overwrite && util.Exists(service.Session.SavePath) {
return serializer.Err(serializer.CodeConflict, "placeholder file already exist", nil)
}