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[#291] object: Split validating target in two

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Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
This commit is contained in:
Evgenii Stratonikov 2023-04-27 18:42:06 +03:00
parent ee58b390bb
commit 35ea207df6
2 changed files with 70 additions and 58 deletions
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5
pkg/services/object/put/streamer.go
View file

@ -77,7 +77,7 @@ func (p *Streamer) initUntrustedTarget(prm *PutInitPrm) error {
p.relay = prm.relay
// prepare untrusted-Put object target
p.target = &validatingTarget{
p.target = &validatingPreparedTarget{
nextTarget: p.newCommonTarget(prm),
fmt: p.fmtValidator,
@ -125,8 +125,7 @@ func (p *Streamer) initTrustedTarget(prm *PutInitPrm) error {
p.sessionKey = sessionKey
p.target = &validatingTarget{
fmt: p.fmtValidator,
unpreparedObject: true,
fmt: p.fmtValidator,
nextTarget: transformer.NewPayloadSizeLimiter(
p.maxPayloadSz,
containerSDK.IsHomomorphicHashingDisabled(prm.cnr),

123
pkg/services/object/put/validation.go
View file

@ -15,13 +15,18 @@ import (
"git.frostfs.info/TrueCloudLab/tzhash/tz"
)
// validatingTarget validates object format and content.
// validatingTarget validates unprepared object format and content (streaming PUT case).
type validatingTarget struct {
nextTarget transformer.ObjectTarget
fmt *object.FormatValidator
}
unpreparedObject bool
// validatingPreparedTarget validates prepared object format and content.
type validatingPreparedTarget struct {
nextTarget transformer.ObjectTarget
fmt *object.FormatValidator
hash hash.Hash
@ -42,38 +47,52 @@ var (
)
func (t *validatingTarget) WriteHeader(ctx context.Context, obj *objectSDK.Object) error {
if err := t.fmt.Validate(ctx, obj, true); err != nil {
return fmt.Errorf("(%T) coult not validate object format: %w", t, err)
}
return t.nextTarget.WriteHeader(ctx, obj)
}
func (t *validatingTarget) Write(ctx context.Context, p []byte) (n int, err error) {
return t.nextTarget.Write(ctx, p)
}
func (t *validatingTarget) Close(ctx context.Context) (*transformer.AccessIdentifiers, error) {
return t.nextTarget.Close(ctx)
}
func (t *validatingPreparedTarget) WriteHeader(ctx context.Context, obj *objectSDK.Object) error {
t.payloadSz = obj.PayloadSize()
chunkLn := uint64(len(obj.Payload()))
if !t.unpreparedObject {
// check chunk size
if chunkLn > t.payloadSz {
return ErrWrongPayloadSize
}
// check payload size limit
if t.payloadSz > t.maxPayloadSz {
return ErrExceedingMaxSize
}
cs, csSet := obj.PayloadChecksum()
if !csSet {
return errors.New("missing payload checksum")
}
switch typ := cs.Type(); typ {
default:
return fmt.Errorf("(%T) unsupported payload checksum type %v", t, typ)
case checksum.SHA256:
t.hash = sha256.New()
case checksum.TZ:
t.hash = tz.New()
}
t.checksum = cs.Value()
// check chunk size
if chunkLn > t.payloadSz {
return ErrWrongPayloadSize
}
if err := t.fmt.Validate(ctx, obj, t.unpreparedObject); err != nil {
// check payload size limit
if t.payloadSz > t.maxPayloadSz {
return ErrExceedingMaxSize
}
cs, csSet := obj.PayloadChecksum()
if !csSet {
return errors.New("missing payload checksum")
}
switch typ := cs.Type(); typ {
default:
return fmt.Errorf("(%T) unsupported payload checksum type %v", t, typ)
case checksum.SHA256:
t.hash = sha256.New()
case checksum.TZ:
t.hash = tz.New()
}
t.checksum = cs.Value()
if err := t.fmt.Validate(ctx, obj, false); err != nil {
return fmt.Errorf("(%T) coult not validate object format: %w", t, err)
}
@ -82,30 +101,26 @@ func (t *validatingTarget) WriteHeader(ctx context.Context, obj *objectSDK.Objec
return err
}
if !t.unpreparedObject {
// update written bytes
//
// Note: we MUST NOT add obj.PayloadSize() since obj
// can carry only the chunk of the full payload
t.writtenPayload += chunkLn
}
// update written bytes
//
// Note: we MUST NOT add obj.PayloadSize() since obj
// can carry only the chunk of the full payload
t.writtenPayload += chunkLn
return nil
}
func (t *validatingTarget) Write(ctx context.Context, p []byte) (n int, err error) {
func (t *validatingPreparedTarget) Write(ctx context.Context, p []byte) (n int, err error) {
chunkLn := uint64(len(p))
if !t.unpreparedObject {
// check if new chunk will overflow payload size
if t.writtenPayload+chunkLn > t.payloadSz {
return 0, ErrWrongPayloadSize
}
// check if new chunk will overflow payload size
if t.writtenPayload+chunkLn > t.payloadSz {
return 0, ErrWrongPayloadSize
}
_, err = t.hash.Write(p)
if err != nil {
return
}
_, err = t.hash.Write(p)
if err != nil {
return
}
n, err = t.nextTarget.Write(ctx, p)
@ -116,16 +131,14 @@ func (t *validatingTarget) Write(ctx context.Context, p []byte) (n int, err erro
return
}
func (t *validatingTarget) Close(ctx context.Context) (*transformer.AccessIdentifiers, error) {
if !t.unpreparedObject {
// check payload size correctness
if t.payloadSz != t.writtenPayload {
return nil, ErrWrongPayloadSize
}
func (t *validatingPreparedTarget) Close(ctx context.Context) (*transformer.AccessIdentifiers, error) {
// check payload size correctness
if t.payloadSz != t.writtenPayload {
return nil, ErrWrongPayloadSize
}
if !bytes.Equal(t.hash.Sum(nil), t.checksum) {
return nil, fmt.Errorf("(%T) incorrect payload checksum", t)
}
if !bytes.Equal(t.hash.Sum(nil), t.checksum) {
return nil, fmt.Errorf("(%T) incorrect payload checksum", t)
}
return t.nextTarget.Close(ctx)