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s3: ignore etags from multipart uploads which aren't md5sums - fixes #56

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This commit is contained in:
Nick Craig-Wood 2015-05-09 10:37:43 +01:00
parent ba2091725e
commit f88d171afd
1 changed files with 9 additions and 1 deletions
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10
s3/s3.go
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@ -419,9 +419,17 @@ func (o *FsObjectS3) Remote() string {
return o.remote
}
var matchMd5 = regexp.MustCompile(`^[0-9a-f]{32}$`)
// Md5sum returns the Md5sum of an object returning a lowercase hex string
func (o *FsObjectS3) Md5sum() (string, error) {
return strings.Trim(strings.ToLower(o.etag), `"`), nil
etag := strings.Trim(strings.ToLower(o.etag), `"`)
// Check the etag is a valid md5sum
if !matchMd5.MatchString(etag) {
fs.Debug(o, "Invalid md5sum (probably multipart uploaded) - ignoring: %q", etag)
return "", nil
}
return etag, nil
}
// Size returns the size of an object in bytes