forked from Consensys/quorum
/
backend.go
284 lines (244 loc) · 8.05 KB
/
backend.go
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package permission
import (
"crypto/ecdsa"
"errors"
"math/big"
"sync"
"time"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/internal/ethapi"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/permission/core"
ptype "github.com/ethereum/go-ethereum/permission/core/types"
"github.com/ethereum/go-ethereum/permission/v1"
"github.com/ethereum/go-ethereum/permission/v2"
"github.com/ethereum/go-ethereum/rpc"
)
type PermissionCtrl struct {
node *node.Node
ethClnt bind.ContractBackend
eth *eth.Ethereum
key *ecdsa.PrivateKey
dataDir string
permConfig *ptype.PermissionConfig
contract ptype.InitService
backend ptype.Backend
useDns bool
isRaft bool
startWaitGroup *sync.WaitGroup // waitgroup to make sure all dependencies are ready before we start the service
errorChan chan error // channel to capture error when starting aysnc
networkInitialized bool
controlService ptype.ControlService
}
var permissionService *PermissionCtrl
func setPermissionService(ps *PermissionCtrl) {
if permissionService == nil {
permissionService = ps
}
}
// Create a service instance for permissioning
//
// Permission Service depends on the following:
// 1. EthService to be ready
// 2. Downloader to sync up blocks
// 3. InProc RPC server to be ready
func NewQuorumPermissionCtrl(stack *node.Node, pconfig *ptype.PermissionConfig, useDns bool) (*PermissionCtrl, error) {
wg := &sync.WaitGroup{}
wg.Add(1)
p := &PermissionCtrl{
node: stack,
key: stack.GetNodeKey(),
dataDir: stack.DataDir(),
permConfig: pconfig,
startWaitGroup: wg,
errorChan: make(chan error),
useDns: useDns,
isRaft: false,
}
err := p.populateBackEnd()
if err != nil {
return nil, err
}
stopChan, stopSubscription := ptype.SubscribeStopEvent()
inProcRPCServerSub := stack.EventMux().Subscribe(rpc.InProcServerReadyEvent{})
log.Debug("permission service: waiting for InProcRPC Server")
go func(_wg *sync.WaitGroup) {
defer func(start time.Time) {
log.Debug("permission service: InProcRPC server is ready", "took", time.Since(start))
stopSubscription.Unsubscribe()
inProcRPCServerSub.Unsubscribe()
_wg.Done()
}(time.Now())
select {
case <-inProcRPCServerSub.Chan():
case <-stopChan:
}
}(wg) // wait for inproc RPC to be ready
return p, nil
}
func (p *PermissionCtrl) Start(srvr *p2p.Server) error {
log.Info("permission service: starting")
go func() {
log.Info("permission service: starting async")
p.asyncStart()
}()
return nil
}
func (p *PermissionCtrl) Protocols() []p2p.Protocol {
return []p2p.Protocol{}
}
func (p *PermissionCtrl) APIs() []rpc.API {
return []rpc.API{
{
Namespace: "quorumPermission",
Version: "1.0",
Service: NewQuorumControlsAPI(p),
Public: true,
},
}
}
func (p *PermissionCtrl) Stop() error {
log.Info("permission service: stopping")
ptype.StopFeed.Send(ptype.StopEvent{})
log.Info("permission service: stopped")
return nil
}
func (p *PermissionCtrl) IsV2Permission() bool {
return p.permConfig.PermissionsModel == ptype.PERMISSION_V2
}
func NewPermissionContractService(ethClnt bind.ContractBackend, permissionV2 bool, key *ecdsa.PrivateKey,
permConfig *ptype.PermissionConfig, isRaft, useDns bool) ptype.InitService {
contractBackEnd := ptype.ContractBackend{
EthClnt: ethClnt,
Key: key,
PermConfig: permConfig,
IsRaft: isRaft,
UseDns: useDns,
}
if permissionV2 {
return &v2.Init{
Backend: contractBackEnd,
}
}
return &v1.Init{
Backend: contractBackEnd,
}
}
func (p *PermissionCtrl) NewPermissionRoleService(txa ethapi.SendTxArgs) (ptype.RoleService, error) {
transactOpts, err := p.getTxParams(txa)
if err != nil {
return nil, err
}
return p.backend.GetRoleService(transactOpts, p.getContractBackend())
}
func (p *PermissionCtrl) NewPermissionOrgService(txa ethapi.SendTxArgs) (ptype.OrgService, error) {
transactOpts, err := p.getTxParams(txa)
if err != nil {
return nil, err
}
return p.backend.GetOrgService(transactOpts, p.getContractBackend())
}
func (p *PermissionCtrl) NewPermissionNodeService(txa ethapi.SendTxArgs) (ptype.NodeService, error) {
transactOpts, err := p.getTxParams(txa)
if err != nil {
return nil, err
}
return p.backend.GetNodeService(transactOpts, p.getContractBackend())
}
func (p *PermissionCtrl) NewPermissionAccountService(txa ethapi.SendTxArgs) (ptype.AccountService, error) {
transactOpts, err := p.getTxParams(txa)
if err != nil {
return nil, err
}
return p.backend.GetAccountService(transactOpts, p.getContractBackend())
}
func (p *PermissionCtrl) NewPermissionAuditService() (ptype.AuditService, error) {
return p.backend.GetAuditService(p.getContractBackend())
}
func (p *PermissionCtrl) NewPermissionControlService() (ptype.ControlService, error) {
return p.backend.GetControlService(p.getContractBackend())
}
func (p *PermissionCtrl) getContractBackend() ptype.ContractBackend {
return ptype.ContractBackend{EthClnt: p.ethClnt, Key: p.key, PermConfig: p.permConfig, IsRaft: p.isRaft, UseDns: p.isRaft}
}
func (p *PermissionCtrl) ConnectionAllowed(_enodeId, _ip string, _port, _raftPort uint16) (bool, error) {
cs, err := p.backend.GetControlService(p.getContractBackend())
if err != nil {
return false, err
}
return cs.ConnectionAllowed(_enodeId, _ip, _port, _raftPort)
}
func (p *PermissionCtrl) IsTransactionAllowed(_sender common.Address, _target common.Address, _value *big.Int, _gasPrice *big.Int, _gasLimit *big.Int, _payload []byte, transactionType core.TransactionType) error {
// If permissions model is not in use return nil
if core.PermissionModel == core.Default {
return nil
}
cs, err := p.backend.GetControlService(p.getContractBackend())
if err != nil {
return err
}
return cs.TransactionAllowed(_sender, _target, _value, _gasPrice, _gasLimit, _payload, transactionType)
}
func (p *PermissionCtrl) populateBackEnd() error {
backend := ptype.NewInterfaceBackend(p.node, false, p.dataDir)
switch p.permConfig.PermissionsModel {
case ptype.PERMISSION_V2:
p.backend = &v2.Backend{
Ib: *backend,
}
log.Info("permission service: using v2 permissions model")
return nil
case ptype.PERMISSION_V1:
p.backend = &v1.Backend{
Ib: *backend,
}
log.Info("permission service: using v1 permissions model")
return nil
default:
return errors.New("permission: invalid permissions model passed")
}
}
func (p *PermissionCtrl) updateBackEnd() {
p.contract = NewPermissionContractService(p.ethClnt, p.IsV2Permission(), p.key, p.permConfig, p.isRaft, p.useDns)
switch p.IsV2Permission() {
case true:
p.backend.(*v2.Backend).Contr = p.contract.(*v2.Init)
p.backend.(*v2.Backend).Ib.SetIsRaft(p.isRaft)
default:
p.backend.(*v1.Backend).Contr = p.contract.(*v1.Init)
p.backend.(*v1.Backend).Ib.SetIsRaft(p.isRaft)
}
}
// validateAccount validates the account and returns the wallet associated with that for signing the transaction
func (p *PermissionCtrl) validateAccount(from common.Address) (accounts.Wallet, error) {
acct := accounts.Account{Address: from}
w, err := p.eth.AccountManager().Find(acct)
if err != nil {
return nil, err
}
return w, nil
}
// getTxParams extracts the transaction related parameters
func (p *PermissionCtrl) getTxParams(txa ethapi.SendTxArgs) (*bind.TransactOpts, error) {
w, err := p.validateAccount(txa.From)
if err != nil {
return nil, ptype.ErrInvalidAccount
}
fromAcct := accounts.Account{Address: txa.From}
transactOpts := bind.NewWalletTransactor(w, fromAcct)
transactOpts.GasPrice = defaultGasPrice
if txa.GasPrice != nil {
transactOpts.GasPrice = txa.GasPrice.ToInt()
}
transactOpts.GasLimit = defaultGasLimit
if txa.Gas != nil {
transactOpts.GasLimit = uint64(*txa.Gas)
}
transactOpts.From = fromAcct.Address
return transactOpts, nil
}