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Turn off md5sum optionally if content-md5 is not set (#7609)

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This PR also brings --compat option to run MinIO in strict
S3 compatibility mode, MinIO by default will now try to run
high performance mode.
This commit is contained in:
Harshavardhana
2019-05-08 18:35:40 -07:00
committed by GitHub
parent 757c639044
commit 72929ec05b
26 changed files with 143 additions and 175 deletions
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23
pkg/hash/reader.go
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@@ -43,7 +43,7 @@ type Reader struct {
// NewReader returns a new hash Reader which computes the MD5 sum and
// SHA256 sum (if set) of the provided io.Reader at EOF.
func NewReader(src io.Reader, size int64, md5Hex, sha256Hex string, actualSize int64) (*Reader, error) {
func NewReader(src io.Reader, size int64, md5Hex, sha256Hex string, actualSize int64, strictCompat bool) (*Reader, error) {
if _, ok := src.(*Reader); ok {
return nil, errNestedReader
}
@@ -62,6 +62,14 @@ func NewReader(src io.Reader, size int64, md5Hex, sha256Hex string, actualSize i
if len(sha256sum) != 0 {
sha256Hash = sha256.New()
}
var md5Hash hash.Hash
if strictCompat {
// Strict compatibility is set then we should
// calculate md5sum always.
md5Hash = md5.New()
} else if len(md5sum) != 0 {
md5Hash = md5.New()
}
if size >= 0 {
src = io.LimitReader(src, size)
}
@@ -70,7 +78,7 @@ func NewReader(src io.Reader, size int64, md5Hex, sha256Hex string, actualSize i
sha256sum: sha256sum,
src: src,
size: size,
md5Hash: md5.New(),
md5Hash: md5Hash,
sha256Hash: sha256Hash,
actualSize: actualSize,
}, nil
@@ -79,7 +87,9 @@ func NewReader(src io.Reader, size int64, md5Hex, sha256Hex string, actualSize i
func (r *Reader) Read(p []byte) (n int, err error) {
n, err = r.src.Read(p)
if n > 0 {
r.md5Hash.Write(p[:n])
if r.md5Hash != nil {
r.md5Hash.Write(p[:n])
}
if r.sha256Hash != nil {
r.sha256Hash.Write(p[:n])
}
@@ -114,7 +124,10 @@ func (r *Reader) MD5() []byte {
// NOTE: Calling this function multiple times might yield
// different results if they are intermixed with Reader.
func (r *Reader) MD5Current() []byte {
return r.md5Hash.Sum(nil)
if r.md5Hash != nil {
return r.md5Hash.Sum(nil)
}
return nil
}
// SHA256 - returns byte sha256 value
@@ -145,7 +158,7 @@ func (r *Reader) Verify() error {
return SHA256Mismatch{hex.EncodeToString(r.sha256sum), hex.EncodeToString(sum)}
}
}
if len(r.md5sum) > 0 {
if r.md5Hash != nil && len(r.md5sum) > 0 {
if sum := r.md5Hash.Sum(nil); !bytes.Equal(r.md5sum, sum) {
return BadDigest{hex.EncodeToString(r.md5sum), hex.EncodeToString(sum)}
}