/
checktx.go
203 lines (169 loc) · 5.21 KB
/
checktx.go
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package executor
import (
"encoding/hex"
"github.com/33cn/chain33/system/dapp"
"github.com/33cn/chain33/types"
vty "github.com/33cn/plugin/plugin/dapp/vote/types"
)
// CheckTx 实现自定义检验交易接口,供框架调用
func (v *vote) CheckTx(tx *types.Transaction, index int) error {
// implement code
txHash := hex.EncodeToString(tx.Hash())
var action vty.VoteAction
err := types.Decode(tx.Payload, &action)
if err != nil {
elog.Error("vote CheckTx", "txHash", txHash, "Decode payload error", err)
return types.ErrActionNotSupport
}
if action.Ty == vty.TyCreateGroupAction {
err = v.checkCreateGroup(action.GetCreateGroup())
} else if action.Ty == vty.TyUpdateGroupAction {
err = v.checkUpdateGroup(action.GetUpdateGroup(), tx, index)
} else if action.Ty == vty.TyCreateVoteAction {
err = v.checkCreateVote(action.GetCreateVote(), tx, index)
} else if action.Ty == vty.TyCommitVoteAction {
err = v.checkCommitVote(action.GetCommitVote(), tx, index)
} else if action.Ty == vty.TyCloseVoteAction {
err = v.checkCloseVote(action.GetCloseVote(), tx, index)
} else if action.Ty == vty.TyUpdateMemberAction {
err = v.checkUpdateMember(action.GetUpdateMember())
} else {
err = types.ErrActionNotSupport
}
if err != nil {
elog.Error("vote CheckTx", "txHash", txHash, "actionName", tx.ActionName(), "err", err, "actionData", action.String())
}
return err
}
func checkMemberValidity(members []*vty.GroupMember) error {
filter := make(map[string]struct{}, len(members))
for _, member := range members {
if member.GetAddr() == "" {
return types.ErrInvalidAddress
}
if _, ok := filter[member.Addr]; ok {
return errDuplicateMember
}
filter[member.Addr] = struct{}{}
}
return nil
}
func (v *vote) checkCreateGroup(create *vty.CreateGroup) error {
if create.GetName() == "" {
return errEmptyName
}
//检测组成员是否有重复
if err := checkMemberValidity(create.GetMembers()); err != nil {
return err
}
//检测管理员是否有重复
if checkSliceItemDuplicate(create.GetAdmins()) {
return errDuplicateAdmin
}
return nil
}
func (v *vote) checkUpdateGroup(update *vty.UpdateGroup, tx *types.Transaction, index int) error {
action := newAction(v, tx, index)
groupInfo, err := action.getGroupInfo(update.GetGroupID())
if err != nil {
return err
}
if !checkSliceItemExist(action.fromAddr, groupInfo.GetAdmins()) {
return errAddrPermissionDenied
}
//防止将管理员全部删除
if len(update.RemoveAdmins) >= len(groupInfo.GetAdmins()) && len(update.AddAdmins) == 0 {
return errAddrPermissionDenied
}
addrs := make([]string, 0, len(update.RemoveMembers)+len(update.AddAdmins)+len(update.RemoveAdmins))
addrs = append(addrs, update.RemoveMembers...)
addrs = append(addrs, update.AddAdmins...)
addrs = append(addrs, update.RemoveAdmins...)
for _, member := range update.AddMembers {
if len(member.Addr) != addrLen {
return types.ErrInvalidAddress
}
}
for _, addr := range addrs {
if len(addr) != addrLen {
elog.Error("checkUpdateGroup", "invalid addr", addr)
return types.ErrInvalidAddress
}
}
//保证管理员地址合法性
for _, addr := range update.GetAddAdmins() {
if err := dapp.CheckAddress(v.GetAPI().GetConfig(), addr, v.GetHeight()); err != nil {
elog.Error("checkUpdateGroup", "addr", addr, "CheckAddress err", err)
return types.ErrInvalidAddress
}
}
return nil
}
func (v *vote) checkCreateVote(create *vty.CreateVote, tx *types.Transaction, index int) error {
if create.GetName() == "" {
return errEmptyName
}
action := newAction(v, tx, index)
groupInfo, err := action.getGroupInfo(create.GetGroupID())
if err != nil {
return err
}
if !checkSliceItemExist(action.fromAddr, groupInfo.GetAdmins()) {
return errAddrPermissionDenied
}
if create.GetEndTimestamp() <= v.GetBlockTime() || create.EndTimestamp <= create.BeginTimestamp {
return errInvalidVoteTime
}
if len(create.VoteOptions) < 2 {
return errInvalidVoteOption
}
return nil
}
func (v *vote) checkCommitVote(commit *vty.CommitVote, tx *types.Transaction, index int) error {
action := newAction(v, tx, index)
voteInfo, err := action.getVoteInfo(commit.GetVoteID())
if err != nil {
return err
}
if voteInfo.Status == voteStatusClosed {
return errVoteAlreadyClosed
}
if commit.OptionIndex >= uint32(len(voteInfo.VoteOptions)) {
return errInvalidOptionIndex
}
groupInfo, err := action.getGroupInfo(voteInfo.GroupID)
if err != nil {
return err
}
// check if exist in group members
if !checkMemberExist(action.fromAddr, groupInfo.Members) {
return errAddrPermissionDenied
}
// check if already vote
for _, info := range voteInfo.GetCommitInfos() {
if action.fromAddr == info.Addr {
return errAddrAlreadyVoted
}
}
return nil
}
func (v *vote) checkCloseVote(close *vty.CloseVote, tx *types.Transaction, index int) error {
action := newAction(v, tx, index)
voteInfo, err := action.getVoteInfo(close.GetVoteID())
if err != nil {
return err
}
if voteInfo.Creator != action.fromAddr {
return errAddrPermissionDenied
}
if voteInfo.Status == voteStatusClosed {
return errVoteAlreadyClosed
}
return nil
}
func (v *vote) checkUpdateMember(update *vty.UpdateMember) error {
if update.GetName() == "" {
return errEmptyName
}
return nil
}