admin_sign_message.go

package api

import (
	"context"
	"encoding/base64"
	"errors"
	"fmt"

	"code.vegaprotocol.io/vega/libs/jsonrpc"
	"code.vegaprotocol.io/vega/wallet/wallet"
	"github.com/mitchellh/mapstructure"
)

type AdminSignMessageParams struct {
	Wallet         string `jso:"wallet"`
	Passphrase     string `json:"passphrase"`
	PubKey         string `json:"pubKey"`
	EncodedMessage string `json:"encodedMessage"`
}

type AdminSignMessageResult struct {
	Base64Signature string `json:"encodedSignature"`
}

type AdminSignMessage struct {
	walletStore WalletStore
}

func (h *AdminSignMessage) Handle(ctx context.Context, rawParams jsonrpc.Params, _ jsonrpc.RequestMetadata) (jsonrpc.Result, *jsonrpc.ErrorDetails) {
	params, err := validateAdminSignMessageParams(rawParams)
	if err != nil {
		return nil, invalidParams(err)
	}

	m, err := base64.StdEncoding.DecodeString(params.EncodedMessage)
	if err != nil {
		return nil, invalidParams(ErrEncodedMessageIsNotValidBase64String)
	}

	if exist, err := h.walletStore.WalletExists(ctx, params.Wallet); err != nil {
		return nil, internalError(fmt.Errorf("could not verify the wallet existence: %w", err))
	} else if !exist {
		return nil, invalidParams(ErrWalletDoesNotExist)
	}

	w, err := h.walletStore.GetWallet(ctx, params.Wallet, params.Passphrase)
	if err != nil {
		if errors.Is(err, wallet.ErrWrongPassphrase) {
			return nil, invalidParams(err)
		}
		return nil, internalError(fmt.Errorf("could not retrieve the wallet: %w", err))
	}

	signature, err := w.SignAny(params.PubKey, m)
	if err != nil {
		return nil, internalError(fmt.Errorf("could not sign the message: %w", err))
	}

	return AdminSignMessageResult{
		Base64Signature: base64.StdEncoding.EncodeToString(signature),
	}, nil
}

func NewAdminSignMessage(walletStore WalletStore) *AdminSignMessage {
	return &AdminSignMessage{
		walletStore: walletStore,
	}
}

func validateAdminSignMessageParams(rawParams jsonrpc.Params) (AdminSignMessageParams, error) {
	if rawParams == nil {
		return AdminSignMessageParams{}, ErrParamsRequired
	}

	params := AdminSignMessageParams{}
	if err := mapstructure.Decode(rawParams, &params); err != nil {
		return AdminSignMessageParams{}, ErrParamsDoNotMatch
	}

	if params.Wallet == "" {
		return AdminSignMessageParams{}, ErrWalletIsRequired
	}

	if params.Passphrase == "" {
		return AdminSignMessageParams{}, ErrPassphraseIsRequired
	}

	if params.PubKey == "" {
		return AdminSignMessageParams{}, ErrPublicKeyIsRequired
	}

	if params.EncodedMessage == "" {
		return AdminSignMessageParams{}, ErrMessageIsRequired
	}

	return AdminSignMessageParams{
		Wallet:         params.Wallet,
		Passphrase:     params.Passphrase,
		PubKey:         params.PubKey,
		EncodedMessage: params.EncodedMessage,
	}, nil
}