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webdav: fail soft on time parsing errors

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The time format provided by webdav servers seems to vary wildly from
that specified in the RFC - rclone already parses times in 5 different
formats!

If an unparseable time is found, then fail softly logging an ERROR
(just once) but returning the epoch.

This will mean that webdav servers with bad time formats will still be
usable by rclone.
This commit is contained in:
Nick Craig-Wood 2018-11-30 10:44:24 +00:00
parent 3de7ad5223
commit df1faa9a8f
1 changed files with 14 additions and 0 deletions
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14
backend/webdav/api/types.go
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@ -6,7 +6,10 @@ import (
"regexp" "regexp"
"strconv" "strconv"
"strings" "strings"
"sync"
"time" "time"
"github.com/ncw/rclone/fs"
) )
const ( const (
@ -148,6 +151,8 @@ var timeFormats = []string{
time.RFC3339, // Wed, 31 Oct 2018 13:57:11 CET (as used by komfortcloud.de) time.RFC3339, // Wed, 31 Oct 2018 13:57:11 CET (as used by komfortcloud.de)
} }
var oneTimeError sync.Once
// UnmarshalXML turns XML into a Time // UnmarshalXML turns XML into a Time
func (t *Time) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error { func (t *Time) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
var v string var v string
@ -171,5 +176,14 @@ func (t *Time) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
break break
} }
} }
if err != nil {
oneTimeError.Do(func() {
fs.Errorf(nil, "Failed to parse time %q - using the epoch", v)
})
// Return the epoch instead
*t = Time(time.Unix(0, 0))
// ignore error
err = nil
}
return err return err
} }