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rcd: disable duplicate log

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if running `rclone rcd --rc-user=admin --rc-pass=admin
--rc-allow-origin="*"`, lots of duplicate warnings apperent in log

Warning: Allow origin set to *. This can cause serious security problems.
Warning: Allow origin set to *. This can cause serious security problems.
....

This is not conducive to analyzing debugging info.

Therefore, let's show it only once.
This commit is contained in:
ElonH 2020-05-05 20:34:35 +08:00 committed by Nick Craig-Wood
parent bdc91eda0f
commit d119bfd934
1 changed files with 7 additions and 3 deletions
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10
fs/rc/rcserver/rcserver.go
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@ -14,6 +14,7 @@ import (
"regexp"
"sort"
"strings"
"sync"
"github.com/pkg/errors"
"github.com/prometheus/client_golang/prometheus"
@ -34,6 +35,7 @@ import (
)
var promHandler http.Handler
var onlyOnceWarningAllowOrigin sync.Once
func init() {
rcloneCollector := accounting.NewRcloneCollector()
@ -187,9 +189,11 @@ func (s *Server) handler(w http.ResponseWriter, r *http.Request) {
allowOrigin := rcflags.Opt.AccessControlAllowOrigin
if allowOrigin != "" {
if allowOrigin == "*" {
fs.Logf(nil, "Warning: Allow origin set to *. This can cause serious security problems.")
}
onlyOnceWarningAllowOrigin.Do(func() {
if allowOrigin == "*" {
fs.Logf(nil, "Warning: Allow origin set to *. This can cause serious security problems.")
}
})
w.Header().Add("Access-Control-Allow-Origin", allowOrigin)
} else {
w.Header().Add("Access-Control-Allow-Origin", s.URL())