forked from TrueCloudLab/neoneo-go
85 lines
2.2 KiB
Go
85 lines
2.2 KiB
Go
package manifest
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import (
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"encoding/hex"
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"encoding/json"
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"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/util"
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)
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// Parameter represents smartcontract's parameter's definition.
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type Parameter struct {
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Name string `json:"name"`
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Type smartcontract.ParamType `json:"type"`
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}
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// Event is a description of a single event.
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type Event struct {
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Name string `json:"name"`
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Parameters []Parameter `json:"parameters"`
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}
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// Group represents a group of smartcontracts identified by a public key.
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// Every SC in a group must provide signature of it's hash to prove
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// it belongs to a group.
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type Group struct {
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PublicKey *keys.PublicKey `json:"pubkey"`
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Signature []byte `json:"signature"`
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}
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type groupAux struct {
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PublicKey string `json:"pubkey"`
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Signature []byte `json:"signature"`
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}
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// Method represents method's metadata.
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type Method struct {
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Name string `json:"name"`
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Offset int `json:"offset"`
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Parameters []Parameter `json:"parameters"`
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ReturnType smartcontract.ParamType `json:"returntype"`
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}
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// NewParameter returns new parameter of specified name and type.
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func NewParameter(name string, typ smartcontract.ParamType) Parameter {
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return Parameter{
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Name: name,
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Type: typ,
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}
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}
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// IsValid checks whether group's signature corresponds to the given hash.
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func (g *Group) IsValid(h util.Uint160) bool {
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return g.PublicKey.Verify(g.Signature, hash.Sha256(h.BytesBE()).BytesBE())
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}
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// MarshalJSON implements json.Marshaler interface.
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func (g *Group) MarshalJSON() ([]byte, error) {
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aux := &groupAux{
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PublicKey: hex.EncodeToString(g.PublicKey.Bytes()),
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Signature: g.Signature,
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}
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return json.Marshal(aux)
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}
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// UnmarshalJSON implements json.Unmarshaler interface.
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func (g *Group) UnmarshalJSON(data []byte) error {
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aux := new(groupAux)
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if err := json.Unmarshal(data, aux); err != nil {
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return err
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}
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b, err := hex.DecodeString(aux.PublicKey)
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if err != nil {
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return err
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}
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pub := new(keys.PublicKey)
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if err := pub.DecodeBytes(b); err != nil {
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return err
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}
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g.PublicKey = pub
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g.Signature = aux.Signature
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return nil
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}
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