mirror of https://github.com/poanetwork/quorum.git
640 lines
20 KiB
Go
640 lines
20 KiB
Go
package permission
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import (
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"crypto/ecdsa"
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"encoding/json"
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"errors"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/p2p/enode"
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"io/ioutil"
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"math/big"
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"os"
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"path/filepath"
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"sync"
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"github.com/ethereum/go-ethereum/accounts/abi/bind"
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"github.com/ethereum/go-ethereum/cmd/utils"
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"github.com/ethereum/go-ethereum/controls"
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pbind "github.com/ethereum/go-ethereum/controls/bind/permission"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/eth"
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"github.com/ethereum/go-ethereum/ethclient"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/raft"
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)
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type NodeOperation uint8
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const (
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NodeAdd NodeOperation = iota
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NodeDelete
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)
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type PermissionCtrl struct {
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node *node.Node
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ethClnt *ethclient.Client
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eth *eth.Ethereum
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isRaft bool
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permissionedMode bool
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key *ecdsa.PrivateKey
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dataDir string
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permUpgr *pbind.PermUpgr
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permInterf *pbind.PermInterface
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permNode *pbind.NodeManager
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permAcct *pbind.AcctManager
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permConfig *types.PermissionConfig
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}
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func ParsePermissionConifg(dir string) (types.PermissionConfig, error) {
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fileName := "permission-config.json"
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fullPath := filepath.Join(dir, fileName)
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if _, err := os.Stat(fullPath); err != nil {
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log.Warn("permission-config.json file is missing", err)
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return types.PermissionConfig{}, err
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}
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blob, err := ioutil.ReadFile(fullPath)
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if err != nil {
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log.Error("error reading permission-config.json file", err)
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return types.PermissionConfig{}, err
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}
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var permConfig types.PermissionConfig
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err = json.Unmarshal(blob, &permConfig)
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if err != nil {
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log.Error("error unmarshalling permission-config.json file", err)
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return types.PermissionConfig{}, err
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}
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return permConfig, nil
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}
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// Creates the controls structure for permissions
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func NewQuorumPermissionCtrl(stack *node.Node, permissionedMode, isRaft bool, pconfig *types.PermissionConfig) (*PermissionCtrl, error) {
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// Create a new ethclient to for interfacing with the contract
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stateReader, e, err := controls.CreateEthClient(stack)
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if err != nil {
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log.Error("Unable to create ethereum client for permissions check", "err", err)
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return nil, err
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}
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if pconfig.IsEmpty() && permissionedMode {
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utils.Fatalf("permission-config.json is missing contract address")
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}
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if !permissionedMode {
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return &PermissionCtrl{stack, stateReader, e, isRaft, permissionedMode, stack.GetNodeKey(), stack.DataDir(), nil, nil, nil, nil, pconfig}, nil
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}
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pu, err := pbind.NewPermUpgr(common.HexToAddress(pconfig.UpgrdAddress), stateReader)
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if err != nil {
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log.Error("Permissions not enabled for the network", "err", err)
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return nil, err
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}
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// check if permissioning contract is there at address. If not return from here
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pm, err := pbind.NewPermInterface(common.HexToAddress(pconfig.InterfAddress), stateReader)
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if err != nil {
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log.Error("Permissions not enabled for the network", "err", err)
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return nil, err
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}
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pmAcct, err := pbind.NewAcctManager(common.HexToAddress(pconfig.AccountAddress), stateReader)
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if err != nil {
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log.Error("Permissions not enabled for the network", "err", err)
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return nil, err
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}
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pmNode, err := pbind.NewNodeManager(common.HexToAddress(pconfig.NodeAddress), stateReader)
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if err != nil {
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log.Error("Permissions not enabled for the network", "err", err)
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return nil, err
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}
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log.Info("AJ-permission contracts initialized")
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return &PermissionCtrl{stack, stateReader, e, isRaft, permissionedMode, stack.GetNodeKey(), stack.DataDir(), pu, pm, pmNode, pmAcct, pconfig}, nil
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}
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// Starts the node permissioning and account access control monitoring
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func (p *PermissionCtrl) Start() error {
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// Permissions initialization
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if err := p.init(); err != nil {
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log.Error("Permissions init failed", "err", err)
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return err
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}
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// Monitors node addition and decativation from network
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p.manageNodePermissions()
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// Monitors account level persmissions update from smart contarct
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p.manageAccountPermissions()
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return nil
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}
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// Sets the initial values for the network
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func (p *PermissionCtrl) init() error {
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if !p.permissionedMode {
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return nil
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}
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// populate the initial list of permissioned nodes and account accesses
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if err := p.populateInitPermissions(); err != nil {
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return err
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}
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// call populates the account permissions based on past history
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if err := p.populateAcctPermissions(); err != nil {
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return err
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}
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// set the default access to ReadOnly
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types.SetDefaultAccess()
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return nil
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}
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// Manages node addition, decavtivation and activation from network
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func (p *PermissionCtrl) manageNodePermissions() {
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if p.permissionedMode {
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log.Info("AJ-permission start")
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//monitor for new nodes addition via smart contract
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go p.monitorNewNodeAdd()
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//monitor for nodes deletion via smart contract
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go p.monitorNodeDeactivation()
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//monitor for nodes activation from deactivation status
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go p.monitorNodeActivation()
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//monitor for nodes blacklisting via smart contract
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go p.monitorNodeBlacklisting()
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}
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}
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// Listens on the channel for new node approval via smart contract and
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// adds the same into permissioned-nodes.json
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func (p *PermissionCtrl) monitorNewNodeAdd() {
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log.Info("AJ-new node approved")
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ch := make(chan *pbind.NodeManagerNodeApproved, 1)
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opts := &bind.WatchOpts{}
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var blockNumber uint64 = 1
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opts.Start = &blockNumber
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var nodeAddEvent *pbind.NodeManagerNodeApproved
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_, err := p.permNode.NodeManagerFilterer.WatchNodeApproved(opts, ch)
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if err != nil {
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log.Info("Failed WatchNodeApproved: %v", err)
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}
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for {
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log.Info("AJ-new node approved waiting for events...")
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select {
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case nodeAddEvent = <-ch:
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log.Info("AJ-newNodeApproved", "node", nodeAddEvent.EnodeId)
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p.updatePermissionedNodes(nodeAddEvent.EnodeId, NodeAdd)
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}
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}
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}
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// Listens on the channel for new node deactivation via smart contract
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// and removes the same from permissioned-nodes.json
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func (p *PermissionCtrl) monitorNodeDeactivation() {
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ch := make(chan *pbind.NodeManagerNodeDeactivated)
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opts := &bind.WatchOpts{}
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var blockNumber uint64 = 1
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opts.Start = &blockNumber
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var newNodeDeleteEvent *pbind.NodeManagerNodeDeactivated
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_, err := p.permNode.NodeManagerFilterer.WatchNodeDeactivated(opts, ch)
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if err != nil {
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log.Info("Failed NodeDeactivated: %v", err)
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}
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for {
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select {
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case newNodeDeleteEvent = <-ch:
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p.updatePermissionedNodes(newNodeDeleteEvent.EnodeId, NodeDelete)
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}
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}
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}
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// Listnes on the channel for any node activation via smart contract
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// and adds the same permissioned-nodes.json
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func (p *PermissionCtrl) monitorNodeActivation() {
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ch := make(chan *pbind.NodeManagerNodeActivated, 1)
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opts := &bind.WatchOpts{}
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var blockNumber uint64 = 1
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opts.Start = &blockNumber
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var nodeActivatedEvent *pbind.NodeManagerNodeActivated
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_, err := p.permNode.NodeManagerFilterer.WatchNodeActivated(opts, ch)
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if err != nil {
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log.Info("Failed WatchNodeActivated: %v", err)
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}
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for {
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select {
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case nodeActivatedEvent = <-ch:
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p.updatePermissionedNodes(nodeActivatedEvent.EnodeId, NodeAdd)
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}
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}
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}
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// Listens on the channel for node blacklisting via smart contract and
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// adds the same into disallowed-nodes.json
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func (p *PermissionCtrl) monitorNodeBlacklisting() {
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ch := make(chan *pbind.NodeManagerNodeBlacklisted)
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opts := &bind.WatchOpts{}
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var blockNumber uint64 = 1
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opts.Start = &blockNumber
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var newNodeBlacklistEvent *pbind.NodeManagerNodeBlacklisted
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_, err := p.permNode.NodeManagerFilterer.WatchNodeBlacklisted(opts, ch)
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if err != nil {
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log.Info("Failed NodeBlacklisting: %v", err)
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}
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for {
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select {
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case newNodeBlacklistEvent = <-ch:
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log.Info("AJ-nodeBlackListed", "event", newNodeBlacklistEvent)
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//p.updatePermissionedNodes(newNodeBlacklistEvent., newNodeBlacklistEvent.IpAddrPort, newNodeBlacklistEvent.DiscPort, newNodeBlacklistEvent.RaftPort, NodeDelete)
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//p.updateDisallowedNodes(newNodeBlacklistEvent)
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}
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}
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}
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// Populates the new node information into the permissioned-nodes.json file
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func (p *PermissionCtrl) updatePermissionedNodes(enodeId string, operation NodeOperation) {
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log.Debug("updatePermissionedNodes", "DataDir", p.dataDir, "file", params.PERMISSIONED_CONFIG)
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path := filepath.Join(p.dataDir, params.PERMISSIONED_CONFIG)
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if _, err := os.Stat(path); err != nil {
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log.Error("Read Error for permissioned-nodes.json file. This is because 'permissioned' flag is specified but no permissioned-nodes.json file is present", "err", err)
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return
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}
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// Load the nodes from the config file
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blob, err := ioutil.ReadFile(path)
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if err != nil {
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log.Error("updatePermissionedNodes: Failed to access permissioned-nodes.json", "err", err)
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return
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}
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nodelist := []string{}
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if err := json.Unmarshal(blob, &nodelist); err != nil {
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log.Error("updatePermissionedNodes: Failed to load nodes list", "err", err)
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return
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}
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// logic to update the permissioned-nodes.json file based on action
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index := 0
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recExists := false
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for i, eid := range nodelist {
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if eid == enodeId {
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index = i
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recExists = true
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break
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}
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}
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if operation == NodeAdd {
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if !recExists {
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nodelist = append(nodelist, enodeId)
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}
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} else {
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if recExists {
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nodelist = append(nodelist[:index], nodelist[index+1:]...)
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}
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p.disconnectNode(enodeId)
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}
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mu := sync.RWMutex{}
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blob, _ = json.Marshal(nodelist)
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mu.Lock()
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if err := ioutil.WriteFile(path, blob, 0644); err != nil {
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log.Error("updatePermissionedNodes: Error writing new node info to file", "err", err)
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}
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mu.Unlock()
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}
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//this function populates the black listed node information into the disallowed-nodes.json file
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func (p *PermissionCtrl) updateDisallowedNodes(nodeBlacklistEvent *pbind.PermissionsNodeBlacklisted) {
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log.Debug("updateDisallowedNodes", "DataDir", p.dataDir, "file", params.BLACKLIST_CONFIG)
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fileExisted := true
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path := filepath.Join(p.dataDir, params.BLACKLIST_CONFIG)
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// Check if the file is existing. If the file is not existing create the file
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if _, err := os.Stat(path); err != nil {
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log.Error("Read Error for disallowed-nodes.json file", "err", err)
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if _, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR, 0644); err != nil {
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log.Error("Failed to create disallowed-nodes.json file", "err", err)
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return
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}
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fileExisted = false
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}
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nodelist := []string{}
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// Load the nodes from the config file
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if fileExisted == true {
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blob, err := ioutil.ReadFile(path)
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if err != nil {
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log.Error("updateDisallowedNodes Failed to access disallowed-nodes.json", "err", err)
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return
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}
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if blob != nil {
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if err := json.Unmarshal(blob, &nodelist); err != nil {
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log.Error("updateDisallowedNodes: Failed to load nodes list", "err", err)
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return
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}
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}
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}
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newEnodeId := p.formatEnodeId(nodeBlacklistEvent.EnodeId, nodeBlacklistEvent.IpAddrPort, nodeBlacklistEvent.DiscPort, nodeBlacklistEvent.RaftPort)
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nodelist = append(nodelist, newEnodeId)
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mu := sync.RWMutex{}
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blob, _ := json.Marshal(nodelist)
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mu.Lock()
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if err := ioutil.WriteFile(path, blob, 0644); err != nil {
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log.Error("updateDisallowedNodes: Error writing new node info to file", "err", err)
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}
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mu.Unlock()
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// Disconnect the peer if it is already connected
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p.disconnectNode(newEnodeId)
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}
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// Manages account level permissions update
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func (p *PermissionCtrl) manageAccountPermissions() {
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if !p.permissionedMode {
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return
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}
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//monitor for nodes deletiin via smart contract
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go p.monitorAccountPermissions()
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return
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}
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// populates the nodes list from permissioned-nodes.json into the permissions smart contract
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func (p *PermissionCtrl) populatePermissionedNodes() error {
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opts := &bind.FilterOpts{}
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pastAddEvent, err := p.permNode.NodeManagerFilterer.FilterNodeApproved(opts)
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if err == nil {
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recExists := true
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for recExists {
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recExists = pastAddEvent.Next()
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if recExists {
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p.updatePermissionedNodes(pastAddEvent.Event.EnodeId, NodeAdd)
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}
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}
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}
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opts = &bind.FilterOpts{}
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pastDelEvent, err := p.permNode.NodeManagerFilterer.FilterNodeDeactivated(opts)
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if err == nil {
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recExists := true
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for recExists {
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recExists = pastDelEvent.Next()
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if recExists {
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p.updatePermissionedNodes(pastDelEvent.Event.EnodeId, NodeDelete)
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}
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}
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}
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return nil
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}
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// populates the account permissions cache from past account access update events
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func (p *PermissionCtrl) populateAcctPermissions() error {
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opts := &bind.FilterOpts{}
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pastEvents, err := p.permAcct.AcctManagerFilterer.FilterAccountAccessModified(opts)
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if err == nil {
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recExists := true
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for recExists {
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recExists = pastEvents.Next()
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if recExists {
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log.Info("AJ-added account ", "acct", pastEvents.Event.Address, "roleId", pastEvents.Event.RoleId)
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types.AddAccountAccess(pastEvents.Event.Address, pastEvents.Event.RoleId)
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}
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}
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}
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return nil
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}
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// Monitors permissions changes at acount level and uodate the account permissions cache
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func (p *PermissionCtrl) monitorAccountPermissions() {
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ch := make(chan *pbind.AcctManagerAccountAccessModified)
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opts := &bind.WatchOpts{}
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var blockNumber uint64 = 1
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opts.Start = &blockNumber
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var newEvent *pbind.AcctManagerAccountAccessModified
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_, err := p.permAcct.AcctManagerFilterer.WatchAccountAccessModified(opts, ch)
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if err != nil {
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log.Info("Failed NewNodeProposed: %v", err)
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}
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for {
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select {
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case newEvent = <-ch:
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log.Info("AJ-AccountAccessModified", "address", newEvent.Address, "role", newEvent.RoleId)
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types.AddAccountAccess(newEvent.Address, newEvent.RoleId)
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}
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}
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}
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// Disconnect the node from the network
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func (p *PermissionCtrl) disconnectNode(enodeId string) {
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if p.isRaft {
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var raftService *raft.RaftService
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if err := p.node.Service(&raftService); err == nil {
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raftApi := raft.NewPublicRaftAPI(raftService)
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//get the raftId for the given enodeId
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raftId, err := raftApi.GetRaftId(enodeId)
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if err == nil {
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raftApi.RemovePeer(raftId)
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}
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}
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} else {
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// Istanbul - disconnect the peer
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server := p.node.Server()
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if server != nil {
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node, err := enode.ParseV4(enodeId)
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if err == nil {
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server.RemovePeer(node)
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}
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}
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}
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}
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// helper function to format EnodeId
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func (p *PermissionCtrl) formatEnodeId(enodeId, ipAddrPort, discPort, raftPort string) string {
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newEnodeId := "enode://" + enodeId + "@" + ipAddrPort + "?discport=" + discPort
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if p.isRaft {
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newEnodeId += "&raftport=" + raftPort
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}
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return newEnodeId
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}
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// Thus function checks if the its the initial network boot up and if yes
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// populates the initial network enode details from static-nodes.json into
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// smart contracts. Sets the accounts access to full access for the initial
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// initial list of accounts as given in genesis.json file
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func (p *PermissionCtrl) populateInitPermissions() error {
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auth := bind.NewKeyedTransactor(p.key)
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permInterfSession := &pbind.PermInterfaceSession{
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Contract: p.permInterf,
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CallOpts: bind.CallOpts{
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Pending: true,
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},
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TransactOpts: bind.TransactOpts{
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From: auth.From,
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Signer: auth.Signer,
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GasLimit: 47000000,
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GasPrice: big.NewInt(0),
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},
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}
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networkInitialized, err := permInterfSession.GetNetworkBootStatus()
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if err != nil {
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// handle the scenario of no contract code.
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if err.Error() == "no contract code at given address" {
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return err
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}
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log.Warn("Failed to retrieve network boot status ", "err", err)
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}
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if networkInitialized && !p.permissionedMode {
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// Network is initialized with permissions and node is joining in a non-permissioned
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// option. stop the node from coming up
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utils.Fatalf("Joining a permissioned network in non-permissioned mode is not permitted. Bring up geth with --permissioned.")
|
|
}
|
|
|
|
if !p.permissionedMode {
|
|
log.Info("Node started in non-permissioned mode")
|
|
return errors.New("Node started in non-permissioned mode")
|
|
}
|
|
if !networkInitialized {
|
|
// Ensure that there is at least one account given as a part of genesis.json
|
|
// which will have full access. If not throw a fatal error
|
|
// Do not want a network with no access
|
|
log.Info("AJ-network not initialized")
|
|
/*permUpgrSession := &pbind.PermUpgrSession{
|
|
Contract: p.permUpgr,
|
|
CallOpts: bind.CallOpts{
|
|
Pending: true,
|
|
},
|
|
TransactOpts: bind.TransactOpts{
|
|
From: auth.From,
|
|
Signer: auth.Signer,
|
|
GasLimit: 47000000,
|
|
GasPrice: big.NewInt(0),
|
|
},
|
|
}*/
|
|
|
|
/*permUpgrSession.TransactOpts.Nonce = new(big.Int).SetUint64(p.eth.TxPool().Nonce(permUpgrSession.TransactOpts.From))
|
|
if _, err := permUpgrSession.Init(common.HexToAddress(p.permConfig.InterfAddress), common.HexToAddress(p.permConfig.ImplAddress)); err != nil {
|
|
log.Error("AJ-permUpgr.init failed", "err", err)
|
|
return err
|
|
}*/
|
|
|
|
permInterfSession.TransactOpts.Nonce = new(big.Int).SetUint64(p.eth.TxPool().Nonce(permInterfSession.TransactOpts.From))
|
|
if _, err := permInterfSession.SetPolicy(p.permConfig.NwAdminOrg, p.permConfig.NwAdminRole, p.permConfig.OrgAdminRole); err != nil {
|
|
log.Error("AJ-permIntr.setPolicy failed", "err", err)
|
|
return err
|
|
}
|
|
|
|
permInterfSession.TransactOpts.Nonce = new(big.Int).SetUint64(p.eth.TxPool().Nonce(permInterfSession.TransactOpts.From))
|
|
if _, err := permInterfSession.Init(common.HexToAddress(p.permConfig.OrgAddress), common.HexToAddress(p.permConfig.RoleAddress), common.HexToAddress(p.permConfig.AccountAddress), common.HexToAddress(p.permConfig.VoterAddress), common.HexToAddress(p.permConfig.NodeAddress)); err != nil {
|
|
log.Error("AJ-permIntr.init failed", "err", err)
|
|
return err
|
|
}
|
|
|
|
// populate the initial node list from static-nodes.json
|
|
err = p.populateStaticNodesToContract(permInterfSession)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// populate initial account access to full access
|
|
err = p.populateInitAccountAccess(permInterfSession)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err == nil && len(p.permConfig.Accounts) == 0 {
|
|
|
|
//utils.Fatalf("Permissioned network being brought up with zero accounts having full access. Add permissioned full access accounts in genesis.json and bring up the network")
|
|
}
|
|
|
|
// update network status to boot completed
|
|
err = p.updateNetworkStatus(permInterfSession)
|
|
if err != nil {
|
|
log.Info("AJ-failed to updated network boot status")
|
|
return err
|
|
}
|
|
log.Info("AJ-network boot completed")
|
|
} else {
|
|
log.Info("AJ-network already booted")
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Reads the node list from static-nodes.json and populates into the contract
|
|
func (p *PermissionCtrl) populateStaticNodesToContract(permissionsSession *pbind.PermInterfaceSession) error {
|
|
nodes := p2p.ParsePermissionedNodes(p.dataDir)
|
|
for _, node := range nodes {
|
|
|
|
enodeID := node.EnodeID()
|
|
|
|
log.Info("AJ-Adding node to permissions contract", "enodeID", enodeID)
|
|
|
|
nonce := p.eth.TxPool().Nonce(permissionsSession.TransactOpts.From)
|
|
permissionsSession.TransactOpts.Nonce = new(big.Int).SetUint64(nonce)
|
|
|
|
tx, err := permissionsSession.AddAdminNodes(node.String())
|
|
if err != nil {
|
|
log.Warn("Failed to propose node", "err", err)
|
|
return err
|
|
}
|
|
log.Debug("Transaction pending", "tx hash", tx.Hash())
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Invokes the initAccounts function of smart contract to set the initial
|
|
// set of accounts access to full access
|
|
func (p *PermissionCtrl) populateInitAccountAccess(permissionsSession *pbind.PermInterfaceSession) error {
|
|
|
|
if !p.permConfig.IsEmpty() {
|
|
log.Info("AJ-add initial account list ...")
|
|
for _, a := range p.permConfig.Accounts {
|
|
log.Info("AJ-adding account ", "A", a)
|
|
nonce := p.eth.TxPool().Nonce(permissionsSession.TransactOpts.From)
|
|
permissionsSession.TransactOpts.Nonce = new(big.Int).SetUint64(nonce)
|
|
_, er := permissionsSession.AddAdminAccounts(common.HexToAddress(a))
|
|
if er != nil {
|
|
utils.Fatalf("error adding permission initial account list account: %s, error:%v", a, er)
|
|
}
|
|
}
|
|
log.Info("AJ-add initial account list ...done")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// updates network boot status to true
|
|
func (p *PermissionCtrl) updateNetworkStatus(permissionsSession *pbind.PermInterfaceSession) error {
|
|
nonce := p.eth.TxPool().Nonce(permissionsSession.TransactOpts.From)
|
|
permissionsSession.TransactOpts.Nonce = new(big.Int).SetUint64(nonce)
|
|
_, err := permissionsSession.UpdateNetworkBootStatus()
|
|
if err != nil {
|
|
log.Warn("Failed to udpate network boot status ", "err", err)
|
|
return err
|
|
}
|
|
return nil
|
|
}
|