1 // Copyright (C) The Arvados Authors. All rights reserved.
3 // SPDX-License-Identifier: AGPL-3.0
22 "git.arvados.org/arvados.git/sdk/go/arvados"
23 "git.arvados.org/arvados.git/sdk/go/arvadosclient"
24 "git.arvados.org/arvados.git/sdk/go/auth"
25 "git.arvados.org/arvados.git/sdk/go/ctxlog"
26 "git.arvados.org/arvados.git/sdk/go/httpserver"
27 "git.arvados.org/arvados.git/sdk/go/keepclient"
28 "github.com/sirupsen/logrus"
29 "golang.org/x/net/webdav"
34 Cluster *arvados.Cluster
35 clientPool *arvadosclient.ClientPool
37 webdavLS webdav.LockSystem
40 var urlPDHDecoder = strings.NewReplacer(" ", "+", "-", "+")
42 var notFoundMessage = "Not Found"
43 var unauthorizedMessage = "401 Unauthorized\r\n\r\nA valid Arvados token must be provided to access this resource.\r\n"
45 // parseCollectionIDFromURL returns a UUID or PDH if s is a UUID or a
46 // PDH (even if it is a PDH with "+" replaced by " " or "-");
48 func parseCollectionIDFromURL(s string) string {
49 if arvadosclient.UUIDMatch(s) {
52 if pdh := urlPDHDecoder.Replace(s); arvadosclient.PDHMatch(pdh) {
58 func (h *handler) setup() {
59 // Errors will be handled at the client pool.
60 arv, _ := arvados.NewClientFromConfig(h.Cluster)
61 h.clientPool = arvadosclient.MakeClientPoolWith(arv)
63 keepclient.DefaultBlockCache.MaxBlocks = h.Cluster.Collections.WebDAVCache.MaxBlockEntries
65 // Even though we don't accept LOCK requests, every webdav
66 // handler must have a non-nil LockSystem.
67 h.webdavLS = &noLockSystem{}
70 func (h *handler) serveStatus(w http.ResponseWriter, r *http.Request) {
71 json.NewEncoder(w).Encode(struct{ Version string }{version})
74 // updateOnSuccess wraps httpserver.ResponseWriter. If the handler
75 // sends an HTTP header indicating success, updateOnSuccess first
76 // calls the provided update func. If the update func fails, an error
77 // response is sent (using the error's HTTP status or 500 if none),
78 // and the status code and body sent by the handler are ignored (all
79 // response writes return the update error).
80 type updateOnSuccess struct {
81 httpserver.ResponseWriter
82 logger logrus.FieldLogger
88 func (uos *updateOnSuccess) Write(p []byte) (int, error) {
90 uos.WriteHeader(http.StatusOK)
95 return uos.ResponseWriter.Write(p)
98 func (uos *updateOnSuccess) WriteHeader(code int) {
100 uos.sentHeader = true
101 if code >= 200 && code < 400 {
102 if uos.err = uos.update(); uos.err != nil {
103 code := http.StatusInternalServerError
104 var he interface{ HTTPStatus() int }
105 if errors.As(uos.err, &he) {
106 code = he.HTTPStatus()
108 uos.logger.WithError(uos.err).Errorf("update() returned %T error, changing response to HTTP %d", uos.err, code)
109 http.Error(uos.ResponseWriter, uos.err.Error(), code)
114 uos.ResponseWriter.WriteHeader(code)
118 corsAllowHeadersHeader = strings.Join([]string{
119 "Authorization", "Content-Type", "Range",
120 // WebDAV request headers:
121 "Depth", "Destination", "If", "Lock-Token", "Overwrite", "Timeout",
123 writeMethod = map[string]bool{
134 webdavMethod = map[string]bool{
147 browserMethod = map[string]bool{
152 // top-level dirs to serve with siteFS
153 siteFSDir = map[string]bool{
154 "": true, // root directory
160 func stripDefaultPort(host string) string {
161 // Will consider port 80 and port 443 to be the same vhost. I think that's fine.
162 u := &url.URL{Host: host}
163 if p := u.Port(); p == "80" || p == "443" {
164 return strings.ToLower(u.Hostname())
166 return strings.ToLower(host)
170 // CheckHealth implements service.Handler.
171 func (h *handler) CheckHealth() error {
175 // Done implements service.Handler.
176 func (h *handler) Done() <-chan struct{} {
180 // ServeHTTP implements http.Handler.
181 func (h *handler) ServeHTTP(wOrig http.ResponseWriter, r *http.Request) {
182 h.setupOnce.Do(h.setup)
184 if xfp := r.Header.Get("X-Forwarded-Proto"); xfp != "" && xfp != "http" {
188 w := httpserver.WrapResponseWriter(wOrig)
190 if method := r.Header.Get("Access-Control-Request-Method"); method != "" && r.Method == "OPTIONS" {
191 if !browserMethod[method] && !webdavMethod[method] {
192 w.WriteHeader(http.StatusMethodNotAllowed)
195 w.Header().Set("Access-Control-Allow-Headers", corsAllowHeadersHeader)
196 w.Header().Set("Access-Control-Allow-Methods", "COPY, DELETE, GET, LOCK, MKCOL, MOVE, OPTIONS, POST, PROPFIND, PROPPATCH, PUT, RMCOL, UNLOCK")
197 w.Header().Set("Access-Control-Allow-Origin", "*")
198 w.Header().Set("Access-Control-Max-Age", "86400")
202 if !browserMethod[r.Method] && !webdavMethod[r.Method] {
203 w.WriteHeader(http.StatusMethodNotAllowed)
207 if r.Header.Get("Origin") != "" {
208 // Allow simple cross-origin requests without user
209 // credentials ("user credentials" as defined by CORS,
210 // i.e., cookies, HTTP authentication, and client-side
211 // SSL certificates. See
212 // http://www.w3.org/TR/cors/#user-credentials).
213 w.Header().Set("Access-Control-Allow-Origin", "*")
214 w.Header().Set("Access-Control-Expose-Headers", "Content-Range")
221 pathParts := strings.Split(r.URL.Path[1:], "/")
224 var collectionID string
226 var reqTokens []string
230 credentialsOK := h.Cluster.Collections.TrustAllContent
231 reasonNotAcceptingCredentials := ""
233 if r.Host != "" && stripDefaultPort(r.Host) == stripDefaultPort(h.Cluster.Services.WebDAVDownload.ExternalURL.Host) {
236 } else if r.FormValue("disposition") == "attachment" {
241 reasonNotAcceptingCredentials = fmt.Sprintf("vhost %q does not specify a single collection ID or match Services.WebDAVDownload.ExternalURL %q, and Collections.TrustAllContent is false",
242 r.Host, h.Cluster.Services.WebDAVDownload.ExternalURL)
245 if collectionID = arvados.CollectionIDFromDNSName(r.Host); collectionID != "" {
246 // http://ID.collections.example/PATH...
248 } else if r.URL.Path == "/status.json" {
251 } else if siteFSDir[pathParts[0]] {
253 } else if len(pathParts) >= 1 && strings.HasPrefix(pathParts[0], "c=") {
255 collectionID = parseCollectionIDFromURL(pathParts[0][2:])
257 } else if len(pathParts) >= 2 && pathParts[0] == "collections" {
258 if len(pathParts) >= 4 && pathParts[1] == "download" {
259 // /collections/download/ID/TOKEN/PATH...
260 collectionID = parseCollectionIDFromURL(pathParts[2])
261 tokens = []string{pathParts[3]}
265 // /collections/ID/PATH...
266 collectionID = parseCollectionIDFromURL(pathParts[1])
268 // This path is only meant to work for public
269 // data. Tokens provided with the request are
271 credentialsOK = false
272 reasonNotAcceptingCredentials = "the '/collections/UUID/PATH' form only works for public data"
277 if cc := r.Header.Get("Cache-Control"); strings.Contains(cc, "no-cache") || strings.Contains(cc, "must-revalidate") {
282 reqTokens = auth.CredentialsFromRequest(r).Tokens
285 formToken := r.FormValue("api_token")
286 origin := r.Header.Get("Origin")
287 cors := origin != "" && !strings.HasSuffix(origin, "://"+r.Host)
288 safeAjax := cors && (r.Method == http.MethodGet || r.Method == http.MethodHead)
289 safeAttachment := attachment && r.URL.Query().Get("api_token") == ""
291 // No token to use or redact.
292 } else if safeAjax || safeAttachment {
293 // If this is a cross-origin request, the URL won't
294 // appear in the browser's address bar, so
295 // substituting a clipboard-safe URL is pointless.
296 // Redirect-with-cookie wouldn't work anyway, because
297 // it's not safe to allow third-party use of our
300 // If we're supplying an attachment, we don't need to
301 // convert POST to GET to avoid the "really resubmit
302 // form?" problem, so provided the token isn't
303 // embedded in the URL, there's no reason to do
304 // redirect-with-cookie in this case either.
305 reqTokens = append(reqTokens, formToken)
306 } else if browserMethod[r.Method] {
307 // If this is a page view, and the client provided a
308 // token via query string or POST body, we must put
309 // the token in an HttpOnly cookie, and redirect to an
310 // equivalent URL with the query param redacted and
312 h.seeOtherWithCookie(w, r, "", credentialsOK)
316 targetPath := pathParts[stripParts:]
317 if tokens == nil && len(targetPath) > 0 && strings.HasPrefix(targetPath[0], "t=") {
318 // http://ID.example/t=TOKEN/PATH...
319 // /c=ID/t=TOKEN/PATH...
321 // This form must only be used to pass scoped tokens
322 // that give permission for a single collection. See
323 // FormValue case above.
324 tokens = []string{targetPath[0][2:]}
326 targetPath = targetPath[1:]
332 if writeMethod[r.Method] {
333 http.Error(w, errReadOnly.Error(), http.StatusMethodNotAllowed)
336 if len(reqTokens) == 0 {
337 w.Header().Add("WWW-Authenticate", "Basic realm=\"collections\"")
338 http.Error(w, unauthorizedMessage, http.StatusUnauthorized)
342 } else if collectionID == "" {
343 http.Error(w, notFoundMessage, http.StatusNotFound)
346 fsprefix = "by_id/" + collectionID + "/"
351 if h.Cluster.Users.AnonymousUserToken != "" {
352 tokens = append(tokens, h.Cluster.Users.AnonymousUserToken)
358 http.Error(w, fmt.Sprintf("Authorization tokens are not accepted here: %v, and no anonymous user token is configured.", reasonNotAcceptingCredentials), http.StatusUnauthorized)
360 http.Error(w, fmt.Sprintf("No authorization token in request, and no anonymous user token is configured."), http.StatusUnauthorized)
365 if len(targetPath) > 0 && targetPath[0] == "_" {
366 // If a collection has a directory called "t=foo" or
367 // "_", it can be served at
368 // //collections.example/_/t=foo/ or
369 // //collections.example/_/_/ respectively:
370 // //collections.example/t=foo/ won't work because
371 // t=foo will be interpreted as a token "foo".
372 targetPath = targetPath[1:]
376 arv := h.clientPool.Get()
378 http.Error(w, "client pool error: "+h.clientPool.Err().Error(), http.StatusInternalServerError)
381 defer h.clientPool.Put(arv)
383 dirOpenMode := os.O_RDONLY
384 if writeMethod[r.Method] {
385 dirOpenMode = os.O_RDWR
388 validToken := make(map[string]bool)
390 var tokenUser *arvados.User
391 var sessionFS arvados.CustomFileSystem
392 var session *cachedSession
393 var collectionDir arvados.File
394 for _, token = range tokens {
395 var statusErr interface{ HTTPStatus() int }
396 fs, sess, user, err := h.Cache.GetSession(token)
397 if errors.As(err, &statusErr) && statusErr.HTTPStatus() == http.StatusUnauthorized {
400 } else if err != nil {
401 http.Error(w, "cache error: "+err.Error(), http.StatusInternalServerError)
404 f, err := fs.OpenFile(fsprefix, dirOpenMode, 0)
405 if errors.As(err, &statusErr) && statusErr.HTTPStatus() == http.StatusForbidden {
406 // collection id is outside token scope
407 validToken[token] = true
410 validToken[token] = true
411 if os.IsNotExist(err) {
412 // collection does not exist or is not
413 // readable using this token
415 } else if err != nil {
416 http.Error(w, err.Error(), http.StatusInternalServerError)
421 collectionDir, sessionFS, session, tokenUser = f, fs, sess, user
425 err := collectionDir.Sync()
427 var statusErr interface{ HTTPStatus() int }
428 if errors.As(err, &statusErr) {
429 http.Error(w, err.Error(), statusErr.HTTPStatus())
431 http.Error(w, err.Error(), http.StatusInternalServerError)
437 if pathToken || !credentialsOK {
438 // Either the URL is a "secret sharing link"
439 // that didn't work out (and asking the client
440 // for additional credentials would just be
441 // confusing), or we don't even accept
442 // credentials at this path.
443 http.Error(w, notFoundMessage, http.StatusNotFound)
446 for _, t := range reqTokens {
448 // The client provided valid token(s),
449 // but the collection was not found.
450 http.Error(w, notFoundMessage, http.StatusNotFound)
454 // The client's token was invalid (e.g., expired), or
455 // the client didn't even provide one. Redirect to
456 // workbench2's login-and-redirect-to-download url if
457 // this is a browser navigation request. (The redirect
458 // flow can't preserve the original method if it's not
459 // GET, and doesn't make sense if the UA is a
460 // command-line tool, is trying to load an inline
461 // image, etc.; in these cases, there's nothing we can
462 // do, so return 401 unauthorized.)
464 // Note Sec-Fetch-Mode is sent by all non-EOL
465 // browsers, except Safari.
466 // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Sec-Fetch-Mode
468 // TODO(TC): This response would be confusing to
469 // someone trying (anonymously) to download public
470 // data that has been deleted. Allow a referrer to
471 // provide this context somehow?
472 if r.Method == http.MethodGet && r.Header.Get("Sec-Fetch-Mode") == "navigate" {
473 target := url.URL(h.Cluster.Services.Workbench2.ExternalURL)
474 redirkey := "redirectToPreview"
476 redirkey = "redirectToDownload"
478 callback := "/c=" + collectionID + "/" + strings.Join(targetPath, "/")
479 // target.RawQuery = url.Values{redirkey:
480 // {target}}.Encode() would be the obvious
481 // thing to do here, but wb2 doesn't decode
482 // this as a query param -- it takes
483 // everything after "${redirkey}=" as the
484 // target URL. If we encode "/" as "%2F" etc.,
485 // the redirect won't work.
486 target.RawQuery = redirkey + "=" + callback
487 w.Header().Add("Location", target.String())
488 w.WriteHeader(http.StatusSeeOther)
490 w.Header().Add("WWW-Authenticate", "Basic realm=\"collections\"")
491 http.Error(w, unauthorizedMessage, http.StatusUnauthorized)
496 if r.Method == http.MethodGet || r.Method == http.MethodHead {
497 targetfnm := fsprefix + strings.Join(pathParts[stripParts:], "/")
498 if fi, err := sessionFS.Stat(targetfnm); err == nil && fi.IsDir() {
499 if !strings.HasSuffix(r.URL.Path, "/") {
500 h.seeOtherWithCookie(w, r, r.URL.Path+"/", credentialsOK)
502 h.serveDirectory(w, r, fi.Name(), sessionFS, targetfnm, !useSiteFS)
509 if len(targetPath) > 0 {
510 basename = targetPath[len(targetPath)-1]
512 if arvadosclient.PDHMatch(collectionID) && writeMethod[r.Method] {
513 http.Error(w, errReadOnly.Error(), http.StatusMethodNotAllowed)
516 if !h.userPermittedToUploadOrDownload(r.Method, tokenUser) {
517 http.Error(w, "Not permitted", http.StatusForbidden)
520 h.logUploadOrDownload(r, session.arvadosclient, sessionFS, fsprefix+strings.Join(targetPath, "/"), nil, tokenUser)
522 if writeMethod[r.Method] {
523 // Save the collection only if/when all
524 // webdav->filesystem operations succeed --
525 // and send a 500 error if the modified
526 // collection can't be saved.
528 // Perform the write in a separate sitefs, so
529 // concurrent read operations on the same
530 // collection see the previous saved
531 // state. After the write succeeds and the
532 // collection record is updated, we reset the
533 // session so the updates are visible in
534 // subsequent read requests.
535 client := session.client.WithRequestID(r.Header.Get("X-Request-Id"))
536 sessionFS = client.SiteFileSystem(session.keepclient)
537 writingDir, err := sessionFS.OpenFile(fsprefix, os.O_RDONLY, 0)
539 http.Error(w, err.Error(), http.StatusInternalServerError)
542 defer writingDir.Close()
543 w = &updateOnSuccess{
545 logger: ctxlog.FromContext(r.Context()),
546 update: func() error {
547 err := writingDir.Sync()
548 var te arvados.TransactionError
549 if errors.As(err, &te) {
555 // Sync the changes to the persistent
556 // sessionfs for this token.
557 snap, err := writingDir.Snapshot()
561 collectionDir.Splice(snap)
565 if r.Method == http.MethodGet {
566 applyContentDispositionHdr(w, r, basename, attachment)
568 wh := webdav.Handler{
569 Prefix: "/" + strings.Join(pathParts[:stripParts], "/"),
570 FileSystem: &webdavFS{
573 writing: writeMethod[r.Method],
574 alwaysReadEOF: r.Method == "PROPFIND",
576 LockSystem: h.webdavLS,
577 Logger: func(r *http.Request, err error) {
579 ctxlog.FromContext(r.Context()).WithError(err).Error("error reported by webdav handler")
584 if r.Method == http.MethodGet && w.WroteStatus() == http.StatusOK {
585 wrote := int64(w.WroteBodyBytes())
586 fnm := strings.Join(pathParts[stripParts:], "/")
587 fi, err := wh.FileSystem.Stat(r.Context(), fnm)
588 if err == nil && fi.Size() != wrote {
590 f, err := wh.FileSystem.OpenFile(r.Context(), fnm, os.O_RDONLY, 0)
592 n, err = f.Read(make([]byte, 1024))
595 ctxlog.FromContext(r.Context()).Errorf("stat.Size()==%d but only wrote %d bytes; read(1024) returns %d, %v", fi.Size(), wrote, n, err)
600 func (h *handler) getClients(reqID, token string) (arv *arvadosclient.ArvadosClient, kc *keepclient.KeepClient, client *arvados.Client, release func(), err error) {
601 arv = h.clientPool.Get()
603 err = h.clientPool.Err()
606 release = func() { h.clientPool.Put(arv) }
608 kc, err = keepclient.MakeKeepClient(arv)
614 client = (&arvados.Client{
615 APIHost: arv.ApiServer,
616 AuthToken: arv.ApiToken,
617 Insecure: arv.ApiInsecure,
618 }).WithRequestID(reqID)
622 var dirListingTemplate = `<!DOCTYPE HTML>
624 <META name="robots" content="NOINDEX">
625 <TITLE>{{ .CollectionName }}</TITLE>
626 <STYLE type="text/css">
631 background-color: #D9EDF7;
632 border-radius: .25em;
643 font-family: monospace;
650 <H1>{{ .CollectionName }}</H1>
652 <P>This collection of data files is being shared with you through
653 Arvados. You can download individual files listed below. To download
654 the entire directory tree with wget, try:</P>
656 <PRE>$ wget --mirror --no-parent --no-host --cut-dirs={{ .StripParts }} https://{{ .Request.Host }}{{ .Request.URL.Path }}</PRE>
658 <H2>File Listing</H2>
664 <LI>{{" " | printf "%15s " | nbsp}}<A href="{{print "./" .Name}}/">{{.Name}}/</A></LI>
666 <LI>{{.Size | printf "%15d " | nbsp}}<A href="{{print "./" .Name}}">{{.Name}}</A></LI>
671 <P>(No files; this collection is empty.)</P>
678 Arvados is a free and open source software bioinformatics platform.
679 To learn more, visit arvados.org.
680 Arvados is not responsible for the files listed on this page.
687 type fileListEnt struct {
693 func (h *handler) serveDirectory(w http.ResponseWriter, r *http.Request, collectionName string, fs http.FileSystem, base string, recurse bool) {
694 var files []fileListEnt
695 var walk func(string) error
696 if !strings.HasSuffix(base, "/") {
699 walk = func(path string) error {
700 dirname := base + path
702 dirname = strings.TrimSuffix(dirname, "/")
704 d, err := fs.Open(dirname)
708 ents, err := d.Readdir(-1)
712 for _, ent := range ents {
713 if recurse && ent.IsDir() {
714 err = walk(path + ent.Name() + "/")
719 files = append(files, fileListEnt{
720 Name: path + ent.Name(),
728 if err := walk(""); err != nil {
729 http.Error(w, "error getting directory listing: "+err.Error(), http.StatusInternalServerError)
733 funcs := template.FuncMap{
734 "nbsp": func(s string) template.HTML {
735 return template.HTML(strings.Replace(s, " ", " ", -1))
738 tmpl, err := template.New("dir").Funcs(funcs).Parse(dirListingTemplate)
740 http.Error(w, "error parsing template: "+err.Error(), http.StatusInternalServerError)
743 sort.Slice(files, func(i, j int) bool {
744 return files[i].Name < files[j].Name
746 w.WriteHeader(http.StatusOK)
747 tmpl.Execute(w, map[string]interface{}{
748 "CollectionName": collectionName,
751 "StripParts": strings.Count(strings.TrimRight(r.URL.Path, "/"), "/"),
755 func applyContentDispositionHdr(w http.ResponseWriter, r *http.Request, filename string, isAttachment bool) {
756 disposition := "inline"
758 disposition = "attachment"
760 if strings.ContainsRune(r.RequestURI, '?') {
761 // Help the UA realize that the filename is just
762 // "filename.txt", not
763 // "filename.txt?disposition=attachment".
765 // TODO(TC): Follow advice at RFC 6266 appendix D
766 disposition += "; filename=" + strconv.QuoteToASCII(filename)
768 if disposition != "inline" {
769 w.Header().Set("Content-Disposition", disposition)
773 func (h *handler) seeOtherWithCookie(w http.ResponseWriter, r *http.Request, location string, credentialsOK bool) {
774 if formToken := r.FormValue("api_token"); formToken != "" {
776 // It is not safe to copy the provided token
777 // into a cookie unless the current vhost
778 // (origin) serves only a single collection or
779 // we are in TrustAllContent mode.
780 http.Error(w, "cannot serve inline content at this URL (possible configuration error; see https://doc.arvados.org/install/install-keep-web.html#dns)", http.StatusBadRequest)
784 // The HttpOnly flag is necessary to prevent
785 // JavaScript code (included in, or loaded by, a page
786 // in the collection being served) from employing the
787 // user's token beyond reading other files in the same
788 // domain, i.e., same collection.
790 // The 303 redirect is necessary in the case of a GET
791 // request to avoid exposing the token in the Location
792 // bar, and in the case of a POST request to avoid
793 // raising warnings when the user refreshes the
795 http.SetCookie(w, &http.Cookie{
796 Name: "arvados_api_token",
797 Value: auth.EncodeTokenCookie([]byte(formToken)),
800 SameSite: http.SameSiteLaxMode,
804 // Propagate query parameters (except api_token) from
805 // the original request.
806 redirQuery := r.URL.Query()
807 redirQuery.Del("api_token")
811 newu, err := u.Parse(location)
813 http.Error(w, "error resolving redirect target: "+err.Error(), http.StatusInternalServerError)
819 Scheme: r.URL.Scheme,
822 RawQuery: redirQuery.Encode(),
825 w.Header().Add("Location", redir)
826 w.WriteHeader(http.StatusSeeOther)
827 io.WriteString(w, `<A href="`)
828 io.WriteString(w, html.EscapeString(redir))
829 io.WriteString(w, `">Continue</A>`)
832 func (h *handler) userPermittedToUploadOrDownload(method string, tokenUser *arvados.User) bool {
833 var permitDownload bool
834 var permitUpload bool
835 if tokenUser != nil && tokenUser.IsAdmin {
836 permitUpload = h.Cluster.Collections.WebDAVPermission.Admin.Upload
837 permitDownload = h.Cluster.Collections.WebDAVPermission.Admin.Download
839 permitUpload = h.Cluster.Collections.WebDAVPermission.User.Upload
840 permitDownload = h.Cluster.Collections.WebDAVPermission.User.Download
842 if (method == "PUT" || method == "POST") && !permitUpload {
843 // Disallow operations that upload new files.
844 // Permit webdav operations that move existing files around.
846 } else if method == "GET" && !permitDownload {
847 // Disallow downloading file contents.
848 // Permit webdav operations like PROPFIND that retrieve metadata
849 // but not file contents.
855 func (h *handler) logUploadOrDownload(
857 client *arvadosclient.ArvadosClient,
858 fs arvados.CustomFileSystem,
860 collection *arvados.Collection,
861 user *arvados.User) {
863 log := ctxlog.FromContext(r.Context())
864 props := make(map[string]string)
865 props["reqPath"] = r.URL.Path
868 log = log.WithField("user_uuid", user.UUID).
869 WithField("user_full_name", user.FullName)
872 useruuid = fmt.Sprintf("%s-tpzed-anonymouspublic", h.Cluster.ClusterID)
874 if collection == nil && fs != nil {
875 collection, filepath = h.determineCollection(fs, filepath)
877 if collection != nil {
878 log = log.WithField("collection_file_path", filepath)
879 props["collection_file_path"] = filepath
880 // h.determineCollection populates the collection_uuid
881 // prop with the PDH, if this collection is being
882 // accessed via PDH. For logging, we use a different
883 // field depending on whether it's a UUID or PDH.
884 if len(collection.UUID) > 32 {
885 log = log.WithField("portable_data_hash", collection.UUID)
886 props["portable_data_hash"] = collection.UUID
888 log = log.WithField("collection_uuid", collection.UUID)
889 props["collection_uuid"] = collection.UUID
892 if r.Method == "PUT" || r.Method == "POST" {
893 log.Info("File upload")
894 if h.Cluster.Collections.WebDAVLogEvents {
896 lr := arvadosclient.Dict{"log": arvadosclient.Dict{
897 "object_uuid": useruuid,
898 "event_type": "file_upload",
899 "properties": props}}
900 err := client.Create("logs", lr, nil)
902 log.WithError(err).Error("Failed to create upload log event on API server")
906 } else if r.Method == "GET" {
907 if collection != nil && collection.PortableDataHash != "" {
908 log = log.WithField("portable_data_hash", collection.PortableDataHash)
909 props["portable_data_hash"] = collection.PortableDataHash
911 log.Info("File download")
912 if h.Cluster.Collections.WebDAVLogEvents {
914 lr := arvadosclient.Dict{"log": arvadosclient.Dict{
915 "object_uuid": useruuid,
916 "event_type": "file_download",
917 "properties": props}}
918 err := client.Create("logs", lr, nil)
920 log.WithError(err).Error("Failed to create download log event on API server")
927 func (h *handler) determineCollection(fs arvados.CustomFileSystem, path string) (*arvados.Collection, string) {
928 target := strings.TrimSuffix(path, "/")
929 for cut := len(target); cut >= 0; cut = strings.LastIndexByte(target, '/') {
930 target = target[:cut]
931 fi, err := fs.Stat(target)
932 if os.IsNotExist(err) {
933 // creating a new file/dir, or download
936 } else if err != nil {
939 switch src := fi.Sys().(type) {
940 case *arvados.Collection:
941 return src, strings.TrimPrefix(path[len(target):], "/")
945 if _, ok := src.(error); ok {