84 lines
1.9 KiB
Go
84 lines
1.9 KiB
Go
package tree
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import (
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"errors"
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"fmt"
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"github.com/anytypeio/go-anytype-infrastructure-experiments/pkg/acl/aclchanges/aclpb"
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"github.com/gogo/protobuf/proto"
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"github.com/anytypeio/go-anytype-infrastructure-experiments/util/keys/symmetric"
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)
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var (
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ErrIncorrectSignature = errors.New("change has incorrect signature")
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ErrIncorrectCID = errors.New("change has incorrect CID")
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)
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type ChangeContent struct {
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ChangesData proto.Marshaler
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ACLData *aclpb.ACLData
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Id string // TODO: this is just for testing, because id should be created automatically from content
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}
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// Change is an abstract type for all types of changes
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type Change struct {
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Next []*Change
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PreviousIds []string
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Id string
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SnapshotId string
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IsSnapshot bool
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DecryptedChange []byte // TODO: check if we need it
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ParsedModel interface{} // TODO: check if we need it
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// iterator helpers
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visited bool
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branchesFinished bool
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Content *aclpb.TreeChange
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Identity string
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Sign []byte
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}
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func (ch *Change) ProtoChange() proto.Marshaler {
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return ch.Content
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}
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func (ch *Change) DecryptContents(key *symmetric.Key) error {
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// if the document is already decrypted
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if ch.Content.CurrentReadKeyHash == 0 {
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return nil
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}
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decrypted, err := key.Decrypt(ch.Content.ChangesData)
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if err != nil {
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return fmt.Errorf("failed to decrypt changes data: %w", err)
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}
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ch.DecryptedChange = decrypted
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return nil
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}
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func NewChange(id string, ch *aclpb.TreeChange, signature []byte) *Change {
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return &Change{
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Next: nil,
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PreviousIds: ch.TreeHeadIds,
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Id: id,
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Content: ch,
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SnapshotId: ch.SnapshotBaseId,
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IsSnapshot: ch.IsSnapshot,
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Identity: string(ch.Identity),
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Sign: signature,
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}
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}
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func (ch *Change) DecryptedChangeContent() []byte {
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return ch.DecryptedChange
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}
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func (ch *Change) Signature() []byte {
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return ch.Sign
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}
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func (ch *Change) CID() string {
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return ch.Id
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}
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