github.com/Blockdaemon/celo-blockchain@v0.0.0-20200129231733-e667f6b08419/signer/core/auditlog.go (about) 1 // Copyright 2018 The go-ethereum Authors 2 // This file is part of go-ethereum. 3 // 4 // go-ethereum is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // go-ethereum is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with go-ethereum. If not, see <http://www.gnu.org/licenses/>. 16 17 package core 18 19 import ( 20 "context" 21 "encoding/json" 22 23 "github.com/ethereum/go-ethereum/accounts" 24 "github.com/ethereum/go-ethereum/common" 25 "github.com/ethereum/go-ethereum/common/hexutil" 26 "github.com/ethereum/go-ethereum/internal/ethapi" 27 "github.com/ethereum/go-ethereum/log" 28 ) 29 30 type AuditLogger struct { 31 log log.Logger 32 api ExternalAPI 33 } 34 35 func (l *AuditLogger) List(ctx context.Context) ([]common.Address, error) { 36 l.log.Info("List", "type", "request", "metadata", MetadataFromContext(ctx).String()) 37 res, e := l.api.List(ctx) 38 l.log.Info("List", "type", "response", "data", res) 39 40 return res, e 41 } 42 43 func (l *AuditLogger) New(ctx context.Context) (accounts.Account, error) { 44 return l.api.New(ctx) 45 } 46 47 func (l *AuditLogger) SignTransaction(ctx context.Context, args SendTxArgs, methodSelector *string) (*ethapi.SignTransactionResult, error) { 48 sel := "<nil>" 49 if methodSelector != nil { 50 sel = *methodSelector 51 } 52 l.log.Info("SignTransaction", "type", "request", "metadata", MetadataFromContext(ctx).String(), 53 "tx", args.String(), 54 "methodSelector", sel) 55 56 res, e := l.api.SignTransaction(ctx, args, methodSelector) 57 if res != nil { 58 l.log.Info("SignTransaction", "type", "response", "data", common.Bytes2Hex(res.Raw), "error", e) 59 } else { 60 l.log.Info("SignTransaction", "type", "response", "data", res, "error", e) 61 } 62 return res, e 63 } 64 65 func (l *AuditLogger) Sign(ctx context.Context, addr common.MixedcaseAddress, data hexutil.Bytes) (hexutil.Bytes, error) { 66 l.log.Info("Sign", "type", "request", "metadata", MetadataFromContext(ctx).String(), 67 "addr", addr.String(), "data", common.Bytes2Hex(data)) 68 b, e := l.api.Sign(ctx, addr, data) 69 l.log.Info("Sign", "type", "response", "data", common.Bytes2Hex(b), "error", e) 70 return b, e 71 } 72 73 func (l *AuditLogger) Export(ctx context.Context, addr common.Address) (json.RawMessage, error) { 74 l.log.Info("Export", "type", "request", "metadata", MetadataFromContext(ctx).String(), 75 "addr", addr.Hex()) 76 j, e := l.api.Export(ctx, addr) 77 // In this case, we don't actually log the json-response, which may be extra sensitive 78 l.log.Info("Export", "type", "response", "json response size", len(j), "error", e) 79 return j, e 80 } 81 82 //func (l *AuditLogger) Import(ctx context.Context, keyJSON json.RawMessage) (Account, error) { 83 // // Don't actually log the json contents 84 // l.log.Info("Import", "type", "request", "metadata", MetadataFromContext(ctx).String(), 85 // "keyJSON size", len(keyJSON)) 86 // a, e := l.api.Import(ctx, keyJSON) 87 // l.log.Info("Import", "type", "response", "addr", a.String(), "error", e) 88 // return a, e 89 //} 90 91 func NewAuditLogger(path string, api ExternalAPI) (*AuditLogger, error) { 92 l := log.New("api", "signer") 93 handler, err := log.FileHandler(path, log.LogfmtFormat()) 94 if err != nil { 95 return nil, err 96 } 97 l.SetHandler(handler) 98 l.Info("Configured", "audit log", path) 99 return &AuditLogger{l, api}, nil 100 }