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update.go
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update.go
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/*
Copyright Gen Digital Inc. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package operationparser
import (
"encoding/json"
"errors"
"fmt"
"github.com/trustbloc/sidetree-go/pkg/api/operation"
"github.com/trustbloc/sidetree-go/pkg/hashing"
"github.com/trustbloc/sidetree-go/pkg/versions/1_0/model"
)
// ParseUpdateOperation will parse update operation.
func (p *Parser) ParseUpdateOperation(request []byte, batch bool) (*model.Operation, error) {
schema, err := p.parseUpdateRequest(request)
if err != nil {
return nil, err
}
signedData, err := p.ParseSignedDataForUpdate(schema.SignedData)
if err != nil {
return nil, err
}
if !batch {
until := p.getAnchorUntil(signedData.AnchorFrom, signedData.AnchorUntil)
err = p.anchorTimeValidator.Validate(signedData.AnchorFrom, until)
if err != nil {
return nil, err
}
err = p.ValidateDelta(schema.Delta)
if err != nil {
return nil, err
}
err = p.validateCommitment(signedData.UpdateKey, schema.Delta.UpdateCommitment)
if err != nil {
return nil, fmt.Errorf("calculate current commitment: %s", err.Error())
}
}
err = hashing.IsValidModelMultihash(signedData.UpdateKey, schema.RevealValue)
if err != nil {
return nil, fmt.Errorf("canonicalized update public key hash doesn't match reveal value: %s", err.Error())
}
return &model.Operation{
Type: operation.TypeUpdate,
OperationRequest: request,
UniqueSuffix: schema.DidSuffix,
Delta: schema.Delta,
SignedData: schema.SignedData,
RevealValue: schema.RevealValue,
}, nil
}
func (p *Parser) parseUpdateRequest(payload []byte) (*model.UpdateRequest, error) {
schema := &model.UpdateRequest{}
err := json.Unmarshal(payload, schema)
if err != nil {
return nil, fmt.Errorf("failed to unmarshal update request: %s", err.Error())
}
if err := p.validateUpdateRequest(schema); err != nil {
return nil, err
}
return schema, nil
}
// ParseSignedDataForUpdate will parse and validate signed data for update.
func (p *Parser) ParseSignedDataForUpdate(compactJWS string) (*model.UpdateSignedDataModel, error) {
jws, err := p.parseSignedData(compactJWS)
if err != nil {
return nil, err
}
schema := &model.UpdateSignedDataModel{}
err = json.Unmarshal(jws.Payload, schema)
if err != nil {
return nil, fmt.Errorf("failed to unmarshal signed data model for update: %s", err.Error())
}
if err := p.validateSignedDataForUpdate(schema); err != nil {
return nil, fmt.Errorf("validate signed data for update: %s", err.Error())
}
return schema, nil
}
func (p *Parser) validateUpdateRequest(update *model.UpdateRequest) error {
if update.DidSuffix == "" {
return errors.New("missing did suffix")
}
if update.SignedData == "" {
return errors.New("missing signed data")
}
return p.validateMultihash(update.RevealValue, "reveal value")
}
func (p *Parser) validateSignedDataForUpdate(signedData *model.UpdateSignedDataModel) error {
if err := p.validateSigningKey(signedData.UpdateKey); err != nil {
return err
}
return p.validateMultihash(signedData.DeltaHash, "delta hash")
}