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api, gui: Prevent connection issues due to unsupported-upgrade (fixes #8569) (#8586)

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There are some situations where an upgrade wouldn't be supported, even though the noUpgrade bool isn't set. So when handling the errors that are caused by this, when attempting an upgrade, it shouldn't lead to some sort of offline-message/restart/warning/etc...

I added some checks on specific errors related to this and return a 501 (Not Implemented) response instead, in case of an "UpgradeUnsupported"-error. Additionally, on the GUI-side, the 501-response is now not to be considered an error to act upon.
This commit is contained in:
Eric P 2022-10-06 21:27:08 +02:00 committed by GitHub
parent a0c80e030a
commit c791dba392
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 30 additions and 22 deletions
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5
gui/default/syncthing/core/syncthingController.js
View File

@ -183,8 +183,9 @@ angular.module('syncthing.core')
if (arg.status === 0) {
// A network error, not an HTTP error
$scope.$emit(Events.OFFLINE);
} else if (arg.status >= 400 && arg.status <= 599) {
// A genuine HTTP error
} else if (arg.status >= 400 && arg.status <= 599 && arg.status != 501) {
// A genuine HTTP error. 501/NotImplemented is considered intentional
// and not an error which we need to act upon.
$('#networkError').modal('hide');
$('#restarting').modal('hide');
$('#shutdown').modal('hide');

47
lib/api/api.go
View File

@ -864,7 +864,7 @@ func (s *service) getDBRemoteNeed(w http.ResponseWriter, r *http.Request) {
device := qs.Get("device")
deviceID, err := protocol.DeviceIDFromString(device)
if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
@ -1017,7 +1017,7 @@ func (s *service) postSystemReset(w http.ResponseWriter, r *http.Request) {
if len(folder) > 0 {
if _, ok := s.cfg.Folders()[folder]; !ok {
http.Error(w, "Invalid folder ID", 500)
http.Error(w, "Invalid folder ID", http.StatusInternalServerError)
return
}
}
@ -1291,7 +1291,7 @@ func (s *service) getReport(w http.ResponseWriter, r *http.Request) {
version = val
}
if r, err := s.urService.ReportDataPreview(context.TODO(), version); err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
} else {
sendJSON(w, r)
@ -1316,7 +1316,7 @@ func (s *service) getDBIgnores(w http.ResponseWriter, r *http.Request) {
lines, patterns, err := s.model.LoadIgnores(folder)
if err != nil && !ignore.IsParseError(err) {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
@ -1333,20 +1333,20 @@ func (s *service) postDBIgnores(w http.ResponseWriter, r *http.Request) {
bs, err := io.ReadAll(r.Body)
r.Body.Close()
if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
var data map[string][]string
err = json.Unmarshal(bs, &data)
if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
err = s.model.SetIgnores(qs.Get("folder"), data["ignore"])
if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
@ -1424,13 +1424,13 @@ func (s *service) getEventSub(mask events.EventType) events.BufferedSubscription
func (s *service) getSystemUpgrade(w http.ResponseWriter, _ *http.Request) {
if s.noUpgrade {
http.Error(w, upgrade.ErrUpgradeUnsupported.Error(), http.StatusServiceUnavailable)
http.Error(w, upgrade.ErrUpgradeUnsupported.Error(), http.StatusNotImplemented)
return
}
opts := s.cfg.Options()
rel, err := upgrade.LatestRelease(opts.ReleasesURL, build.Version, opts.UpgradeToPreReleases)
if err != nil {
http.Error(w, err.Error(), 500)
httpError(w, err)
return
}
res := make(map[string]interface{})
@ -1472,8 +1472,7 @@ func (s *service) postSystemUpgrade(w http.ResponseWriter, _ *http.Request) {
opts := s.cfg.Options()
rel, err := upgrade.LatestRelease(opts.ReleasesURL, build.Version, opts.UpgradeToPreReleases)
if err != nil {
l.Warnln("getting latest release:", err)
http.Error(w, err.Error(), 500)
httpError(w, err)
return
}
@ -1481,7 +1480,7 @@ func (s *service) postSystemUpgrade(w http.ResponseWriter, _ *http.Request) {
err = upgrade.To(rel)
if err != nil {
l.Warnln("upgrading:", err)
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
@ -1528,7 +1527,7 @@ func (s *service) makeDevicePauseHandler(paused bool) http.HandlerFunc {
if msg != "" {
http.Error(w, msg, status)
} else if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
}
@ -1540,7 +1539,7 @@ func (s *service) postDBScan(w http.ResponseWriter, r *http.Request) {
subs := qs["sub"]
err := s.model.ScanFolderSubdirs(folder, subs)
if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
nextStr := qs.Get("next")
@ -1551,7 +1550,7 @@ func (s *service) postDBScan(w http.ResponseWriter, r *http.Request) {
} else {
errors := s.model.ScanFolders()
if len(errors) > 0 {
http.Error(w, "Error scanning folders", 500)
http.Error(w, "Error scanning folders", http.StatusInternalServerError)
sendJSON(w, errors)
return
}
@ -1571,7 +1570,7 @@ func (*service) getQR(w http.ResponseWriter, r *http.Request) {
var text = qs.Get("text")
code, err := qr.Encode(text, qr.M)
if err != nil {
http.Error(w, "Invalid", 500)
http.Error(w, "Invalid", http.StatusInternalServerError)
return
}
@ -1612,7 +1611,7 @@ func (s *service) getFolderVersions(w http.ResponseWriter, r *http.Request) {
qs := r.URL.Query()
versions, err := s.model.GetFolderVersions(qs.Get("folder"))
if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
sendJSON(w, versions)
@ -1624,20 +1623,20 @@ func (s *service) postFolderVersionsRestore(w http.ResponseWriter, r *http.Reque
bs, err := io.ReadAll(r.Body)
r.Body.Close()
if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
var versions map[string]time.Time
err = json.Unmarshal(bs, &versions)
if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
ferr, err := s.model.RestoreFolderVersions(qs.Get("folder"), versions)
if err != nil {
http.Error(w, err.Error(), 500)
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
sendJSON(w, errorStringMap(ferr))
@ -2015,3 +2014,11 @@ func isFolderNotFound(err error) bool {
}
return false
}
func httpError(w http.ResponseWriter, err error) {
if errors.Is(err, upgrade.ErrUpgradeUnsupported) {
http.Error(w, upgrade.ErrUpgradeUnsupported.Error(), http.StatusNotImplemented)
} else {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}