// Copyright 2018 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package core
import (
"context"
"encoding/json"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/internal/ethapi"
"github.com/ethereum/go-ethereum/log"
)
type AuditLogger struct {
log log.Logger
api ExternalAPI
}
func (l *AuditLogger) List(ctx context.Context) (Accounts, error) {
l.log.Info("List", "type", "request", "metadata", MetadataFromContext(ctx).String())
res, e := l.api.List(ctx)
l.log.Info("List", "type", "response", "data", res.String())
return res, e
}
func (l *AuditLogger) New(ctx context.Context) (accounts.Account, error) {
return l.api.New(ctx)
}
func (l *AuditLogger) SignTransaction(ctx context.Context, args SendTxArgs, methodSelector *string) (*ethapi.SignTransactionResult, error) {
sel := "<nil>"
if methodSelector != nil {
sel = *methodSelector
}
l.log.Info("SignTransaction", "type", "request", "metadata", MetadataFromContext(ctx).String(),
"tx", args.String(),
"methodSelector", sel)
res, e := l.api.SignTransaction(ctx, args, methodSelector)
if res != nil {
l.log.Info("SignTransaction", "type", "response", "data", common.Bytes2Hex(res.Raw), "error", e)
} else {
l.log.Info("SignTransaction", "type", "response", "data", res, "error", e)
}
return res, e
}
func (l *AuditLogger) Sign(ctx context.Context, addr common.MixedcaseAddress, data hexutil.Bytes) (hexutil.Bytes, error) {
l.log.Info("Sign", "type", "request", "metadata", MetadataFromContext(ctx).String(),
"addr", addr.String(), "data", common.Bytes2Hex(data))
b, e := l.api.Sign(ctx, addr, data)
l.log.Info("Sign", "type", "response", "data", common.Bytes2Hex(b), "error", e)
return b, e
}
func (l *AuditLogger) EcRecover(ctx context.Context, data, sig hexutil.Bytes) (common.Address, error) {
l.log.Info("EcRecover", "type", "request", "metadata", MetadataFromContext(ctx).String(),
"data", common.Bytes2Hex(data))
a, e := l.api.EcRecover(ctx, data, sig)
l.log.Info("EcRecover", "type", "response", "addr", a.String(), "error", e)
return a, e
}
func (l *AuditLogger) Export(ctx context.Context, addr common.Address) (json.RawMessage, error) {
l.log.Info("Export", "type", "request", "metadata", MetadataFromContext(ctx).String(),
"addr", addr.Hex())
j, e := l.api.Export(ctx, addr)
// In this case, we don't actually log the json-response, which may be extra sensitive
l.log.Info("Export", "type", "response", "json response size", len(j), "error", e)
return j, e
}
func (l *AuditLogger) Import(ctx context.Context, keyJSON json.RawMessage) (Account, error) {
// Don't actually log the json contents
l.log.Info("Import", "type", "request", "metadata", MetadataFromContext(ctx).String(),
"keyJSON size", len(keyJSON))
a, e := l.api.Import(ctx, keyJSON)
l.log.Info("Import", "type", "response", "addr", a.String(), "error", e)
return a, e
}
func NewAuditLogger(path string, api ExternalAPI) (*AuditLogger, error) {
l := log.New("api", "signer")
handler, err := log.FileHandler(path, log.LogfmtFormat())
if err != nil {
return nil, err
}
l.SetHandler(handler)
l.Info("Configured", "audit log", path)
return &AuditLogger{l, api}, nil
}
