rclone/backend/sharefile/sharefile.go
Nick Craig-Wood 94dbfa4ea6 fs: change Config callback into state based callback #3455
This is a very large change which turns the post Config function in
backends into a state based call and response system so that
alternative user interfaces can be added.

The existing config logic has been converted, but it is quite
complicated and folloup commits will likely be needed to fix it!

Follow up commits will add a command line and API based way of using
this configuration system.
2021-05-14 14:07:44 +01:00

1462 lines
40 KiB
Go

// Package sharefile provides an interface to the Citrix Sharefile
// object storage system.
package sharefile
//go:generate ./update-timezone.sh
/* NOTES
## for docs
Detail standard/chunked/streaming uploads?
## Bugs in API
The times in updateItem are being parsed in EST/DST local time
updateItem only sets times accurate to 1 second
https://community.sharefilesupport.com/citrixsharefile/topics/bug-report-for-update-item-patch-items-id-setting-clientmodifieddate-ignores-timezone-and-milliseconds
When doing a rename+move directory, the server appears to do the
rename first in the local directory which can overwrite files of the
same name in the local directory.
https://community.sharefilesupport.com/citrixsharefile/topics/bug-report-for-update-item-patch-items-id-file-overwrite-under-certain-conditions
The Copy command can't change the name at the same time which means we
have to copy via a temporary directory.
https://community.sharefilesupport.com/citrixsharefile/topics/copy-item-needs-to-be-able-to-set-a-new-name
## Allowed characters
https://api.sharefile.com/rest/index/odata.aspx
$select to limit returned fields
https://www.odata.org/documentation/odata-version-3-0/odata-version-3-0-core-protocol/#theselectsystemqueryoption
Also $filter to select only things we need
https://support.citrix.com/article/CTX234774
The following characters should not be used in folder or file names.
\
/
.
,
:
;
*
?
"
<
>
A filename ending with a period without an extension
File names with leading or trailing whitespaces.
// sharefile
stringNeedsEscaping = []byte{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x2A, 0x2E, 0x2F, 0x3A, 0x3C, 0x3E, 0x3F, 0x7C, 0xEFBCBC
}
maxFileLength = 256
canWriteUnnormalized = true
canReadUnnormalized = true
canReadRenormalized = false
canStream = true
Which is control chars + [' ', '*', '.', '/', ':', '<', '>', '?', '|']
- also \ and "
*/
import (
"context"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"path"
"strings"
"time"
"github.com/pkg/errors"
"github.com/rclone/rclone/backend/sharefile/api"
"github.com/rclone/rclone/fs"
"github.com/rclone/rclone/fs/config"
"github.com/rclone/rclone/fs/config/configmap"
"github.com/rclone/rclone/fs/config/configstruct"
"github.com/rclone/rclone/fs/config/obscure"
"github.com/rclone/rclone/fs/fserrors"
"github.com/rclone/rclone/fs/hash"
"github.com/rclone/rclone/lib/dircache"
"github.com/rclone/rclone/lib/encoder"
"github.com/rclone/rclone/lib/oauthutil"
"github.com/rclone/rclone/lib/pacer"
"github.com/rclone/rclone/lib/random"
"github.com/rclone/rclone/lib/rest"
"golang.org/x/oauth2"
)
const (
rcloneClientID = "djQUPlHTUM9EvayYBWuKC5IrVIoQde46"
rcloneEncryptedClientSecret = "v7572bKhUindQL3yDnUAebmgP-QxiwT38JLxVPolcZBl6SSs329MtFzH73x7BeELmMVZtneUPvALSopUZ6VkhQ"
minSleep = 10 * time.Millisecond
maxSleep = 2 * time.Second
decayConstant = 2 // bigger for slower decay, exponential
apiPath = "/sf/v3" // add to endpoint to get API path
tokenPath = "/oauth/token" // add to endpoint to get Token path
minChunkSize = 256 * fs.Kibi
maxChunkSize = 2 * fs.Gibi
defaultChunkSize = 64 * fs.Mebi
defaultUploadCutoff = 128 * fs.Mebi
)
// Generate a new oauth2 config which we will update when we know the TokenURL
func newOauthConfig(tokenURL string) *oauth2.Config {
return &oauth2.Config{
Scopes: nil,
Endpoint: oauth2.Endpoint{
AuthURL: "https://secure.sharefile.com/oauth/authorize",
TokenURL: tokenURL,
},
ClientID: rcloneClientID,
ClientSecret: obscure.MustReveal(rcloneEncryptedClientSecret),
RedirectURL: oauthutil.RedirectPublicSecureURL,
}
}
// Register with Fs
func init() {
fs.Register(&fs.RegInfo{
Name: "sharefile",
Description: "Citrix Sharefile",
NewFs: NewFs,
Config: func(ctx context.Context, name string, m configmap.Mapper, config fs.ConfigIn) (*fs.ConfigOut, error) {
oauthConfig := newOauthConfig("")
checkAuth := func(oauthConfig *oauth2.Config, auth *oauthutil.AuthResult) error {
if auth == nil || auth.Form == nil {
return errors.New("endpoint not found in response")
}
subdomain := auth.Form.Get("subdomain")
apicp := auth.Form.Get("apicp")
if subdomain == "" || apicp == "" {
return errors.Errorf("subdomain or apicp not found in response: %+v", auth.Form)
}
endpoint := "https://" + subdomain + "." + apicp
m.Set("endpoint", endpoint)
oauthConfig.Endpoint.TokenURL = endpoint + tokenPath
return nil
}
return oauthutil.ConfigOut("", &oauthutil.Options{
OAuth2Config: oauthConfig,
CheckAuth: checkAuth,
})
},
Options: []fs.Option{{
Name: "upload_cutoff",
Help: "Cutoff for switching to multipart upload.",
Default: defaultUploadCutoff,
Advanced: true,
}, {
Name: "root_folder_id",
Help: `ID of the root folder
Leave blank to access "Personal Folders". You can use one of the
standard values here or any folder ID (long hex number ID).`,
Examples: []fs.OptionExample{{
Value: "",
Help: `Access the Personal Folders. (Default)`,
}, {
Value: "favorites",
Help: "Access the Favorites folder.",
}, {
Value: "allshared",
Help: "Access all the shared folders.",
}, {
Value: "connectors",
Help: "Access all the individual connectors.",
}, {
Value: "top",
Help: "Access the home, favorites, and shared folders as well as the connectors.",
}},
}, {
Name: "chunk_size",
Default: defaultChunkSize,
Help: `Upload chunk size. Must a power of 2 >= 256k.
Making this larger will improve performance, but note that each chunk
is buffered in memory one per transfer.
Reducing this will reduce memory usage but decrease performance.`,
Advanced: true,
}, {
Name: "endpoint",
Help: `Endpoint for API calls.
This is usually auto discovered as part of the oauth process, but can
be set manually to something like: https://XXX.sharefile.com
`,
Advanced: true,
Default: "",
}, {
Name: config.ConfigEncoding,
Help: config.ConfigEncodingHelp,
Advanced: true,
Default: (encoder.Base |
encoder.EncodeWin | // :?"*<>|
encoder.EncodeBackSlash | // \
encoder.EncodeCtl |
encoder.EncodeRightSpace |
encoder.EncodeRightPeriod |
encoder.EncodeLeftSpace |
encoder.EncodeLeftPeriod |
encoder.EncodeInvalidUtf8),
}},
})
}
// Options defines the configuration for this backend
type Options struct {
RootFolderID string `config:"root_folder_id"`
UploadCutoff fs.SizeSuffix `config:"upload_cutoff"`
ChunkSize fs.SizeSuffix `config:"chunk_size"`
Endpoint string `config:"endpoint"`
Enc encoder.MultiEncoder `config:"encoding"`
}
// Fs represents a remote cloud storage system
type Fs struct {
name string // name of this remote
root string // the path we are working on
opt Options // parsed options
ci *fs.ConfigInfo // global config
features *fs.Features // optional features
srv *rest.Client // the connection to the server
dirCache *dircache.DirCache // Map of directory path to directory id
pacer *fs.Pacer // pacer for API calls
bufferTokens chan []byte // control concurrency of multipart uploads
tokenRenewer *oauthutil.Renew // renew the token on expiry
rootID string // ID of the users root folder
location *time.Location // timezone of server for SetModTime workaround
}
// Object describes a file
type Object struct {
fs *Fs // what this object is part of
remote string // The remote path
hasMetaData bool // metadata is present and correct
size int64 // size of the object
modTime time.Time // modification time of the object
id string // ID of the object
md5 string // hash of the object
}
// ------------------------------------------------------------
// Name of the remote (as passed into NewFs)
func (f *Fs) Name() string {
return f.name
}
// Root of the remote (as passed into NewFs)
func (f *Fs) Root() string {
return f.root
}
// String converts this Fs to a string
func (f *Fs) String() string {
return fmt.Sprintf("sharefile root '%s'", f.root)
}
// Features returns the optional features of this Fs
func (f *Fs) Features() *fs.Features {
return f.features
}
// parsePath parses a sharefile 'url'
func parsePath(path string) (root string) {
root = strings.Trim(path, "/")
return
}
// retryErrorCodes is a slice of error codes that we will retry
var retryErrorCodes = []int{
429, // Too Many Requests.
500, // Internal Server Error
502, // Bad Gateway
503, // Service Unavailable
504, // Gateway Timeout
509, // Bandwidth Limit Exceeded
}
// shouldRetry returns a boolean as to whether this resp and err
// deserve to be retried. It returns the err as a convenience
func shouldRetry(ctx context.Context, resp *http.Response, err error) (bool, error) {
if fserrors.ContextError(ctx, &err) {
return false, err
}
return fserrors.ShouldRetry(err) || fserrors.ShouldRetryHTTP(resp, retryErrorCodes), err
}
// Reads the metadata for the id passed in. If id is "" then it returns the root
// if path is not "" then the item read use id as the root and the path is relative
func (f *Fs) readMetaDataForIDPath(ctx context.Context, id, path string, directoriesOnly bool, filesOnly bool) (info *api.Item, err error) {
opts := rest.Opts{
Method: "GET",
Path: "/Items",
Parameters: url.Values{
"$select": {api.ListRequestSelect},
},
}
if id != "" {
opts.Path += "(" + id + ")"
}
if path != "" {
opts.Path += "/ByPath"
opts.Parameters.Set("path", "/"+f.opt.Enc.FromStandardPath(path))
}
var item api.Item
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &item)
return shouldRetry(ctx, resp, err)
})
if err != nil {
if resp != nil && resp.StatusCode == http.StatusNotFound {
if filesOnly {
return nil, fs.ErrorObjectNotFound
}
return nil, fs.ErrorDirNotFound
}
return nil, errors.Wrap(err, "couldn't find item")
}
if directoriesOnly && item.Type != api.ItemTypeFolder {
return nil, fs.ErrorIsFile
}
if filesOnly && item.Type != api.ItemTypeFile {
return nil, fs.ErrorNotAFile
}
return &item, nil
}
// Reads the metadata for the id passed in. If id is "" then it returns the root
func (f *Fs) readMetaDataForID(ctx context.Context, id string, directoriesOnly bool, filesOnly bool) (info *api.Item, err error) {
return f.readMetaDataForIDPath(ctx, id, "", directoriesOnly, filesOnly)
}
// readMetaDataForPath reads the metadata from the path
func (f *Fs) readMetaDataForPath(ctx context.Context, path string, directoriesOnly bool, filesOnly bool) (info *api.Item, err error) {
leaf, directoryID, err := f.dirCache.FindPath(ctx, path, false)
if err != nil {
if err == fs.ErrorDirNotFound {
return nil, fs.ErrorObjectNotFound
}
return nil, err
}
return f.readMetaDataForIDPath(ctx, directoryID, leaf, directoriesOnly, filesOnly)
}
// errorHandler parses a non 2xx error response into an error
func errorHandler(resp *http.Response) error {
body, err := rest.ReadBody(resp)
if err != nil {
body = nil
}
var e = api.Error{
Code: fmt.Sprint(resp.StatusCode),
Reason: resp.Status,
}
e.Message.Lang = "en"
e.Message.Value = string(body)
if body != nil {
_ = json.Unmarshal(body, &e)
}
return &e
}
func checkUploadChunkSize(cs fs.SizeSuffix) error {
if cs < minChunkSize {
return errors.Errorf("ChunkSize: %s is less than %s", cs, minChunkSize)
}
if cs > maxChunkSize {
return errors.Errorf("ChunkSize: %s is greater than %s", cs, maxChunkSize)
}
return nil
}
func (f *Fs) setUploadChunkSize(cs fs.SizeSuffix) (old fs.SizeSuffix, err error) {
err = checkUploadChunkSize(cs)
if err == nil {
old, f.opt.ChunkSize = f.opt.ChunkSize, cs
f.fillBufferTokens() // reset the buffer tokens
}
return
}
func checkUploadCutoff(cs fs.SizeSuffix) error {
return nil
}
func (f *Fs) setUploadCutoff(cs fs.SizeSuffix) (old fs.SizeSuffix, err error) {
err = checkUploadCutoff(cs)
if err == nil {
old, f.opt.UploadCutoff = f.opt.UploadCutoff, cs
}
return
}
// NewFs constructs an Fs from the path, container:path
func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, error) {
// Parse config into Options struct
opt := new(Options)
err := configstruct.Set(m, opt)
if err != nil {
return nil, err
}
// Check parameters OK
if opt.Endpoint == "" {
return nil, errors.New("endpoint not set: rebuild the remote or set manually")
}
err = checkUploadChunkSize(opt.ChunkSize)
if err != nil {
return nil, err
}
err = checkUploadCutoff(opt.UploadCutoff)
if err != nil {
return nil, err
}
root = parsePath(root)
oauthConfig := newOauthConfig(opt.Endpoint + tokenPath)
var client *http.Client
var ts *oauthutil.TokenSource
client, ts, err = oauthutil.NewClient(ctx, name, m, oauthConfig)
if err != nil {
return nil, errors.Wrap(err, "failed to configure sharefile")
}
ci := fs.GetConfig(ctx)
f := &Fs{
name: name,
root: root,
opt: *opt,
ci: ci,
srv: rest.NewClient(client).SetRoot(opt.Endpoint + apiPath),
pacer: fs.NewPacer(ctx, pacer.NewDefault(pacer.MinSleep(minSleep), pacer.MaxSleep(maxSleep), pacer.DecayConstant(decayConstant))),
}
f.features = (&fs.Features{
CaseInsensitive: true,
CanHaveEmptyDirectories: true,
ReadMimeType: false,
}).Fill(ctx, f)
f.srv.SetErrorHandler(errorHandler)
f.fillBufferTokens()
// Renew the token in the background
if ts != nil {
f.tokenRenewer = oauthutil.NewRenew(f.String(), ts, func() error {
_, err := f.List(ctx, "")
return err
})
}
// Load the server timezone from an internal file
// Used to correct the time in SetModTime
const serverTimezone = "America/New_York"
timezone, err := tzdata.Open(serverTimezone)
if err != nil {
return nil, errors.Wrap(err, "failed to open timezone db")
}
tzdata, err := ioutil.ReadAll(timezone)
if err != nil {
return nil, errors.Wrap(err, "failed to read timezone")
}
_ = timezone.Close()
f.location, err = time.LoadLocationFromTZData(serverTimezone, tzdata)
if err != nil {
return nil, errors.Wrap(err, "failed to load location from timezone")
}
// Find ID of user's root folder
if opt.RootFolderID == "" {
item, err := f.readMetaDataForID(ctx, opt.RootFolderID, true, false)
if err != nil {
return nil, errors.Wrap(err, "couldn't find root ID")
}
f.rootID = item.ID
} else {
f.rootID = opt.RootFolderID
}
// Get rootID
f.dirCache = dircache.New(root, f.rootID, f)
// Find the current root
err = f.dirCache.FindRoot(ctx, false)
if err != nil {
// Assume it is a file
newRoot, remote := dircache.SplitPath(root)
tempF := *f
tempF.dirCache = dircache.New(newRoot, f.rootID, &tempF)
tempF.root = newRoot
// Make new Fs which is the parent
err = tempF.dirCache.FindRoot(ctx, false)
if err != nil {
// No root so return old f
return f, nil
}
_, err := tempF.newObjectWithInfo(ctx, remote, nil)
if err != nil {
if err == fs.ErrorObjectNotFound {
// File doesn't exist so return old f
return f, nil
}
return nil, err
}
f.features.Fill(ctx, &tempF)
// XXX: update the old f here instead of returning tempF, since
// `features` were already filled with functions having *f as a receiver.
// See https://github.com/rclone/rclone/issues/2182
f.dirCache = tempF.dirCache
f.root = tempF.root
// return an error with an fs which points to the parent
return f, fs.ErrorIsFile
}
return f, nil
}
// Fill up (or reset) the buffer tokens
func (f *Fs) fillBufferTokens() {
f.bufferTokens = make(chan []byte, f.ci.Transfers)
for i := 0; i < f.ci.Transfers; i++ {
f.bufferTokens <- nil
}
}
// getUploadBlock gets a block from the pool of size chunkSize
func (f *Fs) getUploadBlock() []byte {
buf := <-f.bufferTokens
if buf == nil {
buf = make([]byte, f.opt.ChunkSize)
}
// fs.Debugf(f, "Getting upload block %p", buf)
return buf
}
// putUploadBlock returns a block to the pool of size chunkSize
func (f *Fs) putUploadBlock(buf []byte) {
buf = buf[:cap(buf)]
if len(buf) != int(f.opt.ChunkSize) {
panic("bad blocksize returned to pool")
}
// fs.Debugf(f, "Returning upload block %p", buf)
f.bufferTokens <- buf
}
// Return an Object from a path
//
// If it can't be found it returns the error fs.ErrorObjectNotFound.
func (f *Fs) newObjectWithInfo(ctx context.Context, remote string, info *api.Item) (fs.Object, error) {
o := &Object{
fs: f,
remote: remote,
}
var err error
if info != nil {
// Set info
err = o.setMetaData(info)
} else {
err = o.readMetaData(ctx) // reads info and meta, returning an error
}
if err != nil {
return nil, err
}
return o, nil
}
// NewObject finds the Object at remote. If it can't be found
// it returns the error fs.ErrorObjectNotFound.
func (f *Fs) NewObject(ctx context.Context, remote string) (fs.Object, error) {
return f.newObjectWithInfo(ctx, remote, nil)
}
// FindLeaf finds a directory of name leaf in the folder with ID pathID
func (f *Fs) FindLeaf(ctx context.Context, pathID, leaf string) (pathIDOut string, found bool, err error) {
if pathID == "top" {
// Find the leaf in pathID
found, err = f.listAll(ctx, pathID, true, false, func(item *api.Item) bool {
if item.Name == leaf {
pathIDOut = item.ID
return true
}
return false
})
return pathIDOut, found, err
}
info, err := f.readMetaDataForIDPath(ctx, pathID, leaf, true, false)
if err == nil {
found = true
pathIDOut = info.ID
} else if err == fs.ErrorDirNotFound {
err = nil // don't return an error if not found
}
return pathIDOut, found, err
}
// CreateDir makes a directory with pathID as parent and name leaf
func (f *Fs) CreateDir(ctx context.Context, pathID, leaf string) (newID string, err error) {
var resp *http.Response
leaf = f.opt.Enc.FromStandardName(leaf)
var req = api.Item{
Name: leaf,
FileName: leaf,
CreatedAt: time.Now(),
}
var info api.Item
opts := rest.Opts{
Method: "POST",
Path: "/Items(" + pathID + ")/Folder",
Parameters: url.Values{
"$select": {api.ListRequestSelect},
"overwrite": {"false"},
"passthrough": {"false"},
},
}
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, &req, &info)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return "", errors.Wrap(err, "CreateDir")
}
return info.ID, nil
}
// list the objects into the function supplied
//
// If directories is set it only sends directories
// User function to process a File item from listAll
//
// Should return true to finish processing
type listAllFn func(*api.Item) bool
// Lists the directory required calling the user function on each item found
//
// If the user fn ever returns true then it early exits with found = true
func (f *Fs) listAll(ctx context.Context, dirID string, directoriesOnly bool, filesOnly bool, fn listAllFn) (found bool, err error) {
opts := rest.Opts{
Method: "GET",
Path: "/Items(" + dirID + ")/Children",
Parameters: url.Values{
"$select": {api.ListRequestSelect},
},
}
var result api.ListResponse
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &result)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return found, errors.Wrap(err, "couldn't list files")
}
for i := range result.Value {
item := &result.Value[i]
if item.Type == api.ItemTypeFolder {
if filesOnly {
continue
}
} else if item.Type == api.ItemTypeFile {
if directoriesOnly {
continue
}
} else {
fs.Debugf(f, "Ignoring %q - unknown type %q", item.Name, item.Type)
continue
}
item.Name = f.opt.Enc.ToStandardName(item.Name)
if fn(item) {
found = true
break
}
}
return
}
// List the objects and directories in dir into entries. The
// entries can be returned in any order but should be for a
// complete directory.
//
// dir should be "" to list the root, and should not have
// trailing slashes.
//
// This should return ErrDirNotFound if the directory isn't
// found.
func (f *Fs) List(ctx context.Context, dir string) (entries fs.DirEntries, err error) {
directoryID, err := f.dirCache.FindDir(ctx, dir, false)
if err != nil {
return nil, err
}
var iErr error
_, err = f.listAll(ctx, directoryID, false, false, func(info *api.Item) bool {
remote := path.Join(dir, info.Name)
if info.Type == api.ItemTypeFolder {
// cache the directory ID for later lookups
f.dirCache.Put(remote, info.ID)
d := fs.NewDir(remote, info.CreatedAt).SetID(info.ID).SetSize(info.Size).SetItems(int64(info.FileCount))
entries = append(entries, d)
} else if info.Type == api.ItemTypeFile {
o, err := f.newObjectWithInfo(ctx, remote, info)
if err != nil {
iErr = err
return true
}
entries = append(entries, o)
}
return false
})
if err != nil {
return nil, err
}
if iErr != nil {
return nil, iErr
}
return entries, nil
}
// Creates from the parameters passed in a half finished Object which
// must have setMetaData called on it
//
// Returns the object, leaf, directoryID and error
//
// Used to create new objects
func (f *Fs) createObject(ctx context.Context, remote string, modTime time.Time, size int64) (o *Object, leaf string, directoryID string, err error) {
// Create the directory for the object if it doesn't exist
leaf, directoryID, err = f.dirCache.FindPath(ctx, remote, true)
if err != nil {
return
}
// Temporary Object under construction
o = &Object{
fs: f,
remote: remote,
}
return o, leaf, directoryID, nil
}
// Put the object
//
// Copy the reader in to the new object which is returned
//
// The new object may have been created if an error is returned
func (f *Fs) Put(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
existingObj, err := f.newObjectWithInfo(ctx, src.Remote(), nil)
switch err {
case nil:
return existingObj, existingObj.Update(ctx, in, src, options...)
case fs.ErrorObjectNotFound:
// Not found so create it
return f.PutUnchecked(ctx, in, src)
default:
return nil, err
}
}
// PutStream uploads to the remote path with the modTime given of indeterminate size
func (f *Fs) PutStream(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
return f.Put(ctx, in, src, options...)
}
// PutUnchecked the object into the container
//
// This will produce an error if the object already exists
//
// Copy the reader in to the new object which is returned
//
// The new object may have been created if an error is returned
func (f *Fs) PutUnchecked(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (fs.Object, error) {
remote := src.Remote()
size := src.Size()
modTime := src.ModTime(ctx)
o, _, _, err := f.createObject(ctx, remote, modTime, size)
if err != nil {
return nil, err
}
return o, o.Update(ctx, in, src, options...)
}
// Mkdir creates the container if it doesn't exist
func (f *Fs) Mkdir(ctx context.Context, dir string) error {
_, err := f.dirCache.FindDir(ctx, dir, true)
return err
}
// purgeCheck removes the directory, if check is set then it refuses
// to do so if it has anything in
func (f *Fs) purgeCheck(ctx context.Context, dir string, check bool) error {
root := path.Join(f.root, dir)
if root == "" {
return errors.New("can't purge root directory")
}
dc := f.dirCache
rootID, err := dc.FindDir(ctx, dir, false)
if err != nil {
return err
}
// need to check if empty as it will delete recursively by default
if check {
found, err := f.listAll(ctx, rootID, false, false, func(item *api.Item) bool {
return true
})
if err != nil {
return errors.Wrap(err, "purgeCheck")
}
if found {
return fs.ErrorDirectoryNotEmpty
}
}
err = f.remove(ctx, rootID)
f.dirCache.FlushDir(dir)
if err != nil {
return err
}
return nil
}
// Rmdir deletes the root folder
//
// Returns an error if it isn't empty
func (f *Fs) Rmdir(ctx context.Context, dir string) error {
return f.purgeCheck(ctx, dir, true)
}
// Precision return the precision of this Fs
func (f *Fs) Precision() time.Duration {
// sharefile returns times accurate to the millisecond, but
// for some reason these seem only accurate 2ms.
// updateItem seems to only set times accurate to 1 second though.
return time.Second // this doesn't appear to be documented anywhere
}
// Purge deletes all the files and the container
//
// Optional interface: Only implement this if you have a way of
// deleting all the files quicker than just running Remove() on the
// result of List()
func (f *Fs) Purge(ctx context.Context, dir string) error {
return f.purgeCheck(ctx, dir, false)
}
// updateItem patches a file or folder
//
// if leaf = "" or directoryID = "" or modTime == nil then it will be
// left alone
//
// Note that this seems to work by renaming first, then moving to a
// new directory which means that it can overwrite existing objects
// :-(
func (f *Fs) updateItem(ctx context.Context, id, leaf, directoryID string, modTime *time.Time) (info *api.Item, err error) {
// Move the object
opts := rest.Opts{
Method: "PATCH",
Path: "/Items(" + id + ")",
Parameters: url.Values{
"$select": {api.ListRequestSelect},
"overwrite": {"false"},
},
}
leaf = f.opt.Enc.FromStandardName(leaf)
// FIXME this appears to be a bug in the API
//
// If you set the modified time via PATCH then the server
// appears to parse it as a local time for America/New_York
//
// However if you set it when uploading the file then it is fine...
//
// Also it only sets the time to 1 second resolution where it
// uses 1ms resolution elsewhere
if modTime != nil && f.location != nil {
newTime := modTime.In(f.location)
isoTime := newTime.Format(time.RFC3339Nano)
// Chop TZ -05:00 off the end and replace with Z
isoTime = isoTime[:len(isoTime)-6] + "Z"
// Parse it back into a time
newModTime, err := time.Parse(time.RFC3339Nano, isoTime)
if err != nil {
return nil, errors.Wrap(err, "updateItem: time parse")
}
modTime = &newModTime
}
update := api.UpdateItemRequest{
Name: leaf,
FileName: leaf,
ModifiedAt: modTime,
}
if directoryID != "" {
update.Parent = &api.Parent{
ID: directoryID,
}
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, &update, &info)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, err
}
return info, nil
}
// move a file or folder
//
// This is complicated by the fact that we can't use updateItem to move
// to a different directory AND rename at the same time as it can
// overwrite files in the source directory.
func (f *Fs) move(ctx context.Context, isFile bool, id, oldLeaf, newLeaf, oldDirectoryID, newDirectoryID string) (item *api.Item, err error) {
// To demonstrate bug
// item, err = f.updateItem(ctx, id, newLeaf, newDirectoryID, nil)
// if err != nil {
// return nil, errors.Wrap(err, "Move rename leaf")
// }
// return item, nil
doRenameLeaf := oldLeaf != newLeaf
doMove := oldDirectoryID != newDirectoryID
// Now rename the leaf to a temporary name if we are moving to
// another directory to make sure we don't overwrite something
// in the source directory by accident
if doRenameLeaf && doMove {
tmpLeaf := newLeaf + "." + random.String(8)
item, err = f.updateItem(ctx, id, tmpLeaf, "", nil)
if err != nil {
return nil, errors.Wrap(err, "Move rename leaf")
}
}
// Move the object to a new directory (with the existing name)
// if required
if doMove {
item, err = f.updateItem(ctx, id, "", newDirectoryID, nil)
if err != nil {
return nil, errors.Wrap(err, "Move directory")
}
}
// Rename the leaf to its final name if required
if doRenameLeaf {
item, err = f.updateItem(ctx, id, newLeaf, "", nil)
if err != nil {
return nil, errors.Wrap(err, "Move rename leaf")
}
}
return item, nil
}
// Move src to this remote using server-side move operations.
//
// This is stored with the remote path given
//
// It returns the destination Object and a possible error
//
// Will only be called if src.Fs().Name() == f.Name()
//
// If it isn't possible then return fs.ErrorCantMove
func (f *Fs) Move(ctx context.Context, src fs.Object, remote string) (fs.Object, error) {
srcObj, ok := src.(*Object)
if !ok {
fs.Debugf(src, "Can't move - not same remote type")
return nil, fs.ErrorCantMove
}
// Find ID of src parent, not creating subdirs
srcLeaf, srcParentID, err := srcObj.fs.dirCache.FindPath(ctx, srcObj.remote, false)
if err != nil {
return nil, err
}
// Create temporary object
dstObj, leaf, directoryID, err := f.createObject(ctx, remote, srcObj.modTime, srcObj.size)
if err != nil {
return nil, err
}
// Do the move
info, err := f.move(ctx, true, srcObj.id, srcLeaf, leaf, srcParentID, directoryID)
if err != nil {
return nil, err
}
err = dstObj.setMetaData(info)
if err != nil {
return nil, err
}
return dstObj, nil
}
// DirMove moves src, srcRemote to this remote at dstRemote
// using server-side move operations.
//
// Will only be called if src.Fs().Name() == f.Name()
//
// If it isn't possible then return fs.ErrorCantDirMove
//
// If destination exists then return fs.ErrorDirExists
func (f *Fs) DirMove(ctx context.Context, src fs.Fs, srcRemote, dstRemote string) error {
srcFs, ok := src.(*Fs)
if !ok {
fs.Debugf(srcFs, "Can't move directory - not same remote type")
return fs.ErrorCantDirMove
}
srcID, srcDirectoryID, srcLeaf, dstDirectoryID, dstLeaf, err := f.dirCache.DirMove(ctx, srcFs.dirCache, srcFs.root, srcRemote, f.root, dstRemote)
if err != nil {
return err
}
// Do the move
_, err = f.move(ctx, false, srcID, srcLeaf, dstLeaf, srcDirectoryID, dstDirectoryID)
if err != nil {
return err
}
srcFs.dirCache.FlushDir(srcRemote)
return nil
}
// Copy src to this remote using server-side copy operations.
//
// This is stored with the remote path given
//
// It returns the destination Object and a possible error
//
// Will only be called if src.Fs().Name() == f.Name()
//
// If it isn't possible then return fs.ErrorCantCopy
func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (dst fs.Object, err error) {
srcObj, ok := src.(*Object)
if !ok {
fs.Debugf(src, "Can't copy - not same remote type")
return nil, fs.ErrorCantCopy
}
err = srcObj.readMetaData(ctx)
if err != nil {
return nil, err
}
// Find ID of src parent, not creating subdirs
srcLeaf, srcParentID, err := srcObj.fs.dirCache.FindPath(ctx, srcObj.remote, false)
if err != nil {
return nil, err
}
srcLeaf = f.opt.Enc.FromStandardName(srcLeaf)
_ = srcParentID
// Create temporary object
dstObj, dstLeaf, dstParentID, err := f.createObject(ctx, remote, srcObj.modTime, srcObj.size)
if err != nil {
return nil, err
}
dstLeaf = f.opt.Enc.FromStandardName(dstLeaf)
sameName := strings.ToLower(srcLeaf) == strings.ToLower(dstLeaf)
if sameName && srcParentID == dstParentID {
return nil, errors.Errorf("copy: can't copy to a file in the same directory whose name only differs in case: %q vs %q", srcLeaf, dstLeaf)
}
// Discover whether we can just copy directly or not
directCopy := false
if sameName {
// if copying to same name can copy directly
directCopy = true
} else {
// if (dstParentID, srcLeaf) does not exist then can
// Copy then Rename without fear of overwriting
// something
_, err := f.readMetaDataForIDPath(ctx, dstParentID, srcLeaf, false, false)
if err == fs.ErrorObjectNotFound || err == fs.ErrorDirNotFound {
directCopy = true
} else if err != nil {
return nil, errors.Wrap(err, "copy: failed to examine destination dir")
} else {
// otherwise need to copy via a temporary directory
}
}
// Copy direct to destination unless !directCopy in which case
// copy via a temporary directory
copyTargetDirID := dstParentID
if !directCopy {
// Create a temporary directory to copy the object in to
tmpDir := "rclone-temp-dir-" + random.String(16)
err = f.Mkdir(ctx, tmpDir)
if err != nil {
return nil, errors.Wrap(err, "copy: failed to make temp dir")
}
defer func() {
rmdirErr := f.Rmdir(ctx, tmpDir)
if rmdirErr != nil && err == nil {
err = errors.Wrap(rmdirErr, "copy: failed to remove temp dir")
}
}()
tmpDirID, err := f.dirCache.FindDir(ctx, tmpDir, false)
if err != nil {
return nil, errors.Wrap(err, "copy: failed to find temp dir")
}
copyTargetDirID = tmpDirID
}
// Copy the object
opts := rest.Opts{
Method: "POST",
Path: "/Items(" + srcObj.id + ")/Copy",
Parameters: url.Values{
"$select": {api.ListRequestSelect},
"overwrite": {"false"},
"targetid": {copyTargetDirID},
},
}
var resp *http.Response
var info *api.Item
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.CallJSON(ctx, &opts, nil, &info)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, err
}
// Rename into the correct name and directory if required and
// set the modtime since the copy doesn't preserve it
var updateParentID, updateLeaf string // only set these if necessary
if srcLeaf != dstLeaf {
updateLeaf = dstLeaf
}
if !directCopy {
updateParentID = dstParentID
}
// set new modtime regardless
info, err = f.updateItem(ctx, info.ID, updateLeaf, updateParentID, &srcObj.modTime)
if err != nil {
return nil, err
}
err = dstObj.setMetaData(info)
if err != nil {
return nil, err
}
return dstObj, nil
}
// DirCacheFlush resets the directory cache - used in testing as an
// optional interface
func (f *Fs) DirCacheFlush() {
f.dirCache.ResetRoot()
}
// Hashes returns the supported hash sets.
func (f *Fs) Hashes() hash.Set {
return hash.Set(hash.MD5)
}
// ------------------------------------------------------------
// Fs returns the parent Fs
func (o *Object) Fs() fs.Info {
return o.fs
}
// Return a string version
func (o *Object) String() string {
if o == nil {
return "<nil>"
}
return o.remote
}
// Remote returns the remote path
func (o *Object) Remote() string {
return o.remote
}
// Hash returns the SHA-1 of an object returning a lowercase hex string
func (o *Object) Hash(ctx context.Context, t hash.Type) (string, error) {
if t != hash.MD5 {
return "", hash.ErrUnsupported
}
err := o.readMetaData(ctx)
if err != nil {
return "", err
}
return o.md5, nil
}
// Size returns the size of an object in bytes
func (o *Object) Size() int64 {
err := o.readMetaData(context.TODO())
if err != nil {
fs.Logf(o, "Failed to read metadata: %v", err)
return 0
}
return o.size
}
// setMetaData sets the metadata from info
func (o *Object) setMetaData(info *api.Item) (err error) {
if info.Type != api.ItemTypeFile {
return errors.Wrapf(fs.ErrorNotAFile, "%q is %q", o.remote, info.Type)
}
o.hasMetaData = true
o.size = info.Size
if !info.ModifiedAt.IsZero() {
o.modTime = info.ModifiedAt
} else {
o.modTime = info.CreatedAt
}
o.id = info.ID
o.md5 = info.Hash
return nil
}
// readMetaData gets the metadata if it hasn't already been fetched
//
// it also sets the info
func (o *Object) readMetaData(ctx context.Context) (err error) {
if o.hasMetaData {
return nil
}
var info *api.Item
if o.id != "" {
info, err = o.fs.readMetaDataForID(ctx, o.id, false, true)
} else {
info, err = o.fs.readMetaDataForPath(ctx, o.remote, false, true)
}
if err != nil {
return err
}
return o.setMetaData(info)
}
// ModTime returns the modification time of the object
//
//
// It attempts to read the objects mtime and if that isn't present the
// LastModified returned in the http headers
func (o *Object) ModTime(ctx context.Context) time.Time {
err := o.readMetaData(ctx)
if err != nil {
fs.Logf(o, "Failed to read metadata: %v", err)
return time.Now()
}
return o.modTime
}
// SetModTime sets the modification time of the local fs object
func (o *Object) SetModTime(ctx context.Context, modTime time.Time) (err error) {
info, err := o.fs.updateItem(ctx, o.id, "", "", &modTime)
if err != nil {
return err
}
err = o.setMetaData(info)
if err != nil {
return err
}
return nil
}
// Storable returns a boolean showing whether this object storable
func (o *Object) Storable() bool {
return true
}
// Open an object for read
func (o *Object) Open(ctx context.Context, options ...fs.OpenOption) (in io.ReadCloser, err error) {
opts := rest.Opts{
Method: "GET",
Path: "/Items(" + o.id + ")/Download",
Parameters: url.Values{
"redirect": {"false"},
},
}
var resp *http.Response
var dl api.DownloadSpecification
err = o.fs.pacer.Call(func() (bool, error) {
resp, err = o.fs.srv.CallJSON(ctx, &opts, nil, &dl)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, errors.Wrap(err, "open: fetch download specification")
}
fs.FixRangeOption(options, o.size)
opts = rest.Opts{
Path: "",
RootURL: dl.URL,
Method: "GET",
Options: options,
}
err = o.fs.pacer.Call(func() (bool, error) {
resp, err = o.fs.srv.Call(ctx, &opts)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return nil, errors.Wrap(err, "open")
}
return resp.Body, err
}
// Update the object with the contents of the io.Reader, modTime and size
//
// If existing is set then it updates the object rather than creating a new one
//
// The new object may have been created if an error is returned
func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, options ...fs.OpenOption) (err error) {
remote := o.Remote()
size := src.Size()
modTime := src.ModTime(ctx)
isLargeFile := size < 0 || size > int64(o.fs.opt.UploadCutoff)
// Create the directory for the object if it doesn't exist
leaf, directoryID, err := o.fs.dirCache.FindPath(ctx, remote, true)
if err != nil {
return err
}
leaf = o.fs.opt.Enc.FromStandardName(leaf)
var req = api.UploadRequest{
Method: "standard",
Raw: true,
Filename: leaf,
Overwrite: true,
CreatedDate: modTime,
ModifiedDate: modTime,
Tool: o.fs.ci.UserAgent,
}
if isLargeFile {
if size < 0 {
// For files of indeterminate size, use streamed
req.Method = "streamed"
} else {
// otherwise use threaded which is more efficient
req.Method = "threaded"
req.ThreadCount = &o.fs.ci.Transfers
req.Filesize = &size
}
}
var resp *http.Response
var info api.UploadSpecification
opts := rest.Opts{
Method: "POST",
Path: "/Items(" + directoryID + ")/Upload2",
Options: options,
}
err = o.fs.pacer.Call(func() (bool, error) {
resp, err = o.fs.srv.CallJSON(ctx, &opts, &req, &info)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return errors.Wrap(err, "upload get specification")
}
// If file is large then upload in parts
if isLargeFile {
up, err := o.fs.newLargeUpload(ctx, o, in, src, &info)
if err != nil {
return err
}
return up.Upload(ctx)
}
// Single part upload
opts = rest.Opts{
Method: "POST",
RootURL: info.ChunkURI + "&fmt=json",
Body: in,
ContentLength: &size,
}
var finish api.UploadFinishResponse
err = o.fs.pacer.CallNoRetry(func() (bool, error) {
resp, err = o.fs.srv.CallJSON(ctx, &opts, nil, &finish)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return errors.Wrap(err, "upload file")
}
return o.checkUploadResponse(ctx, &finish)
}
// Check the upload response and update the metadata on the object
func (o *Object) checkUploadResponse(ctx context.Context, finish *api.UploadFinishResponse) (err error) {
// Find returned ID
id, err := finish.ID()
if err != nil {
return err
}
// Read metadata
o.id = id
o.hasMetaData = false
return o.readMetaData(ctx)
}
// Remove an object by ID
func (f *Fs) remove(ctx context.Context, id string) (err error) {
opts := rest.Opts{
Method: "DELETE",
Path: "/Items(" + id + ")",
Parameters: url.Values{
"singleversion": {"false"},
"forceSync": {"true"},
},
NoResponse: true,
}
var resp *http.Response
err = f.pacer.Call(func() (bool, error) {
resp, err = f.srv.Call(ctx, &opts)
return shouldRetry(ctx, resp, err)
})
if err != nil {
return errors.Wrap(err, "remove")
}
return nil
}
// Remove an object
func (o *Object) Remove(ctx context.Context) error {
err := o.readMetaData(ctx)
if err != nil {
return errors.Wrap(err, "Remove: Failed to read metadata")
}
return o.fs.remove(ctx, o.id)
}
// ID returns the ID of the Object if known, or "" if not
func (o *Object) ID() string {
return o.id
}
// Check the interfaces are satisfied
var (
_ fs.Fs = (*Fs)(nil)
_ fs.Purger = (*Fs)(nil)
_ fs.Mover = (*Fs)(nil)
_ fs.DirMover = (*Fs)(nil)
_ fs.Copier = (*Fs)(nil)
_ fs.PutStreamer = (*Fs)(nil)
_ fs.DirCacheFlusher = (*Fs)(nil)
_ fs.Object = (*Object)(nil)
_ fs.IDer = (*Object)(nil)
)