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validate.go
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validate.go
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package enterprise
import (
"bytes"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"github.com/aergoio/aergo/consensus"
"strings"
"github.com/aergoio/aergo/state"
"github.com/aergoio/aergo/types"
)
const SetConf = "setConf"
const AppendConf = "appendConf"
const RemoveConf = "removeConf"
const AppendAdmin = "appendAdmin"
const RemoveAdmin = "removeAdmin"
const EnableConf = "enableConf"
const DisableConf = "disableConf"
const ChangeCluster = "changeCluster"
var ErrTxEnterpriseAdminIsNotSet = errors.New("admin is not set")
func ValidateEnterpriseTx(tx *types.TxBody, sender *state.V,
scs *state.ContractState, blockNo types.BlockNo) (*EnterpriseContext, error) {
var ci types.CallInfo
if err := json.Unmarshal(tx.Payload, &ci); err != nil {
return nil, err
}
context := &EnterpriseContext{Call: &ci}
switch ci.Name {
case AppendAdmin, RemoveAdmin:
if len(ci.Args) != 1 { //args[0] : encoded admin address
return nil, fmt.Errorf("invalid arguments in payload for SetAdmin: %s", ci.Args)
}
arg := ci.Args[0].(string)
context.Args = append(context.Args, arg)
address := types.ToAddress(arg)
if len(address) == 0 {
return nil, fmt.Errorf("invalid arguments[0]: %s", ci.Args[0])
}
admins, err := checkAdmin(scs, sender.ID())
if err != nil &&
err != ErrTxEnterpriseAdminIsNotSet {
return nil, err
}
context.Admins = admins
if ci.Name == AppendAdmin && context.IsAdminExist(address) {
return nil, fmt.Errorf("already exist admin: %s", ci.Args[0])
} else if ci.Name == RemoveAdmin {
if !context.IsAdminExist(address) {
return nil, fmt.Errorf("admins is not exist : %s", ci.Args[0])
}
conf, err := getConf(scs, []byte(AccountWhite))
if err != nil {
return nil, err
}
if conf != nil && conf.On {
for _, v := range conf.Values {
if arg == v {
return nil, fmt.Errorf("admin is in the account whitelist: %s", ci.Args[0])
}
}
}
}
case SetConf:
if len(ci.Args) <= 1 { //args[0] : key, args[1:] : values
return nil, fmt.Errorf("invalid arguments in payload for setConf: %s", ci.Args)
}
if err := checkArgs(context, &ci); err != nil {
return nil, err
}
key := genKey([]byte(context.Args[0]))
admins, err := checkAdmin(scs, sender.ID())
if err != nil {
return nil, err
}
context.Admins = admins
if context.Conf, err = setConfValues(scs, key, context.Args[1:]); err != nil {
return nil, err
}
case AppendConf, RemoveConf:
if len(ci.Args) != 2 { //args[0] : key, args[1] : a value
return nil, fmt.Errorf("invalid arguments in payload for %s : %s", ci.Name, ci.Args)
}
if err := checkArgs(context, &ci); err != nil {
return nil, err
}
admins, err := checkAdmin(scs, sender.ID())
if err != nil {
return nil, err
}
conf, err := getConf(scs, []byte(context.Args[0]))
if err != nil {
return nil, err
}
if conf == nil {
conf = &Conf{On: false}
}
context.Conf = conf
context.Admins = admins
key := genKey([]byte(context.Args[0]))
if ci.Name == AppendConf {
if context.HasConfValue(context.Args[1]) {
return nil, fmt.Errorf("already included config value : %v", context.Args)
}
conf.AppendValue(context.Args[1])
} else if ci.Name == RemoveConf {
if !context.HasConfValue(context.Args[1]) {
return nil, fmt.Errorf("value not exist : %v", context.Args)
}
conf.RemoveValue(context.Args[1])
}
if err := conf.Validate(key, context); err != nil {
return nil, err
}
case EnableConf:
if len(ci.Args) != 2 { //args[0] : key, args[1] : true/false
return nil, fmt.Errorf("invalid arguments in payload for enableConf: %s", ci.Args)
}
arg0, ok := ci.Args[0].(string)
if !ok {
return nil, fmt.Errorf("not string in payload for enableConf : %s", ci.Args)
}
if _, ok := enterpriseKeyDict[strings.ToUpper(ci.Args[0].(string))]; !ok {
return nil, fmt.Errorf("not allowed key : %s", ci.Args[0])
}
context.Args = append(context.Args, arg0)
key := genKey([]byte(arg0))
value, ok := ci.Args[1].(bool)
if !ok {
return nil, fmt.Errorf("not bool in payload for enableConf : %s", ci.Args)
}
admins, err := checkAdmin(scs, sender.ID())
if err != nil {
return nil, err
}
conf, err := enableConf(scs, key, value)
if err != nil {
return nil, err
}
context.Admins = admins
context.Conf = conf
if err := conf.Validate(key, context); err != nil {
return nil, err
}
case ChangeCluster:
if !consensus.UseRaft() {
return nil, ErrNotSupportedMethod
}
cc, err := ValidateChangeCluster(ci, blockNo)
if err != nil {
return nil, err
}
context.ArgsAny = append(context.ArgsAny, cc)
admins, err := checkAdmin(scs, sender.ID())
if err != nil {
return nil, err
}
context.Admins = admins
default:
return nil, fmt.Errorf("unsupported call %s", ci.Name)
}
return context, nil
}
func checkAdmin(scs *state.ContractState, address []byte) ([][]byte, error) {
admins, err := getAdmins(scs)
if err != nil {
return nil, fmt.Errorf("could not get admin in enterprise contract")
}
if admins == nil {
return nil, ErrTxEnterpriseAdminIsNotSet
}
if i := bytes.Index(bytes.Join(admins, []byte("")), address); i == -1 && i%types.AddressLength != 0 {
return nil, fmt.Errorf("admin address not matched")
}
return admins, nil
}
type checkArgsFunc func(string) error
func checkArgs(context *EnterpriseContext, ci *types.CallInfo) error {
key := strings.ToUpper(ci.Args[0].(string))
if _, ok := enterpriseKeyDict[key]; !ok {
return fmt.Errorf("not allowed key : %s", ci.Args[0])
}
unique := map[string]int{}
var op checkArgsFunc
switch key {
case P2PWhite, P2PBlack:
op = checkP2PBlackWhite
case AccountWhite:
op = checkAccountWhite
case RPCPermissions:
op = checkRPCPermissions
default:
op = checkNone
}
for i, v := range ci.Args {
arg, ok := v.(string)
if !ok {
return fmt.Errorf("not string in payload for setting conf : %s", ci.Args)
}
if strings.Contains(arg, "\\") {
return fmt.Errorf("not allowed charactor in %s", arg)
}
if unique[arg] != 0 {
return fmt.Errorf("the request has duplicate arguments %s", arg)
}
unique[arg]++
context.Args = append(context.Args, arg)
if i == 0 { //it's key
continue
}
if err := op(arg); err != nil {
return err
}
}
return nil
}
func checkP2PBlackWhite(v string) error {
// v must be json object. e.g. {"peerid":"16Uiu2HAmPZE7gT1hF2bjpg1UVH65xyNUbBVRf3mBFBJpz3tgLGGt", "address":"", "cidr":"172.21.3.35/24" } , which address and cidr cannot be set in same time.
if _, err := types.ParseListEntry(v); err != nil {
return fmt.Errorf("invalid p2p whitelist %s", v)
}
return nil
}
func checkAccountWhite(v string) error {
if _, err := types.DecodeAddress(v); err != nil {
return fmt.Errorf("invalid account %s", v)
}
return nil
}
func checkRPCPermissions(v string) error {
values := strings.Split(v, ":")
if len(values) != 2 {
return fmt.Errorf("invalid RPC permission %s", v)
}
if _, err := base64.StdEncoding.DecodeString(values[0]); err != nil {
return fmt.Errorf("invalid RPC cert %s", v)
}
return nil
}
func checkNone(v string) error {
return nil
}