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s3: Fix precondition failed in CopyObjectPart when src is encrypted (#7276)

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CopyObject precondition checks into GetObjectReader
in order to perform SSE-C pre-condition checks using the
last 32 bytes of encrypted ETag rather than the decrypted
ETag

This also necessitates moving precondition checks for
gateways to gateway layer rather than object handler check
This commit is contained in:
Anis Elleuch
2019-03-06 21:38:41 +01:00
committed by kannappanr
parent 39ddb78c75
commit b05825ffe8
14 changed files with 134 additions and 44 deletions
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cmd/xl-v1-object.go
+3 -3
View File
@@ -182,7 +182,7 @@ func (xl xlObjects) GetObjectNInfo(ctx context.Context, bucket, object string, r
nsUnlocker()
return nil, toObjectErr(err, bucket, object)
}
return NewGetObjectReaderFromReader(bytes.NewBuffer(nil), objInfo, nsUnlocker), nil
return NewGetObjectReaderFromReader(bytes.NewBuffer(nil), objInfo, opts.CheckCopyPrecondFn, nsUnlocker)
}
var objInfo ObjectInfo
@@ -192,7 +192,7 @@ func (xl xlObjects) GetObjectNInfo(ctx context.Context, bucket, object string, r
return nil, toObjectErr(err, bucket, object)
}
fn, off, length, nErr := NewGetObjectReader(rs, objInfo, nsUnlocker)
fn, off, length, nErr := NewGetObjectReader(rs, objInfo, opts.CheckCopyPrecondFn, nsUnlocker)
if nErr != nil {
return nil, nErr
}
@@ -206,7 +206,7 @@ func (xl xlObjects) GetObjectNInfo(ctx context.Context, bucket, object string, r
// case of incomplete read.
pipeCloser := func() { pr.Close() }
return fn(pr, h, pipeCloser)
return fn(pr, h, opts.CheckCopyPrecondFn, pipeCloser)
}
// GetObject - reads an object erasured coded across multiple