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117 lines
3.9 KiB
117 lines
3.9 KiB
package core
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import (
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"fmt"
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"github.com/tendermint/tendermint/account"
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. "github.com/tendermint/tendermint/common"
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ctypes "github.com/tendermint/tendermint/rpc/core/types"
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"github.com/tendermint/tendermint/state"
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"github.com/tendermint/tendermint/types"
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"github.com/tendermint/tendermint/vm"
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)
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func toVMAccount(acc *account.Account) *vm.Account {
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return &vm.Account{
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Address: LeftPadWord256(acc.Address),
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Balance: acc.Balance,
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Code: acc.Code, // This is crazy.
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Nonce: uint64(acc.Sequence),
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StorageRoot: LeftPadWord256(acc.StorageRoot),
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Other: acc.PubKey,
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}
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}
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//-----------------------------------------------------------------------------
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// Run a contract's code on an isolated and unpersisted state
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// Cannot be used to create new contracts
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func Call(address, data []byte) (*ctypes.ResponseCall, error) {
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st := consensusState.GetState() // performs a copy
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cache := state.NewBlockCache(st)
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outAcc := cache.GetAccount(address)
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if outAcc == nil {
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return nil, fmt.Errorf("Account %x does not exist", address)
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}
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callee := toVMAccount(outAcc)
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caller := &vm.Account{Address: Zero256}
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txCache := state.NewTxCache(cache)
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params := vm.Params{
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BlockHeight: uint64(st.LastBlockHeight),
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BlockHash: LeftPadWord256(st.LastBlockHash),
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BlockTime: st.LastBlockTime.Unix(),
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GasLimit: 10000000,
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}
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vmach := vm.NewVM(txCache, params, caller.Address, nil)
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gas := uint64(1000000000)
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ret, err := vmach.Call(caller, callee, callee.Code, data, 0, &gas)
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if err != nil {
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return nil, err
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}
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return &ctypes.ResponseCall{Return: ret}, nil
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}
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// Run the given code on an isolated and unpersisted state
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// Cannot be used to create new contracts
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func CallCode(code, data []byte) (*ctypes.ResponseCall, error) {
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st := consensusState.GetState() // performs a copy
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cache := mempoolReactor.Mempool.GetCache()
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callee := &vm.Account{Address: Zero256}
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caller := &vm.Account{Address: Zero256}
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txCache := state.NewTxCache(cache)
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params := vm.Params{
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BlockHeight: uint64(st.LastBlockHeight),
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BlockHash: LeftPadWord256(st.LastBlockHash),
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BlockTime: st.LastBlockTime.Unix(),
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GasLimit: 10000000,
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}
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vmach := vm.NewVM(txCache, params, caller.Address, nil)
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gas := uint64(1000000000)
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ret, err := vmach.Call(caller, callee, code, data, 0, &gas)
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if err != nil {
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return nil, err
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}
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return &ctypes.ResponseCall{Return: ret}, nil
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}
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//-----------------------------------------------------------------------------
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func SignTx(tx types.Tx, privAccounts []*account.PrivAccount) (types.Tx, error) {
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// more checks?
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for i, privAccount := range privAccounts {
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if privAccount == nil || privAccount.PrivKey == nil {
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return nil, fmt.Errorf("Invalid (empty) privAccount @%v", i)
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}
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}
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switch tx.(type) {
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case *types.SendTx:
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sendTx := tx.(*types.SendTx)
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for i, input := range sendTx.Inputs {
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input.PubKey = privAccounts[i].PubKey
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input.Signature = privAccounts[i].Sign(config.GetString("chain_id"), sendTx)
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}
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case *types.CallTx:
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callTx := tx.(*types.CallTx)
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callTx.Input.PubKey = privAccounts[0].PubKey
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callTx.Input.Signature = privAccounts[0].Sign(config.GetString("chain_id"), callTx)
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case *types.BondTx:
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bondTx := tx.(*types.BondTx)
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// the first privaccount corresponds to the BondTx pub key.
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// the rest to the inputs
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bondTx.Signature = privAccounts[0].Sign(config.GetString("chain_id"), bondTx).(account.SignatureEd25519)
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for i, input := range bondTx.Inputs {
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input.PubKey = privAccounts[i+1].PubKey
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input.Signature = privAccounts[i+1].Sign(config.GetString("chain_id"), bondTx)
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}
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case *types.UnbondTx:
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unbondTx := tx.(*types.UnbondTx)
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unbondTx.Signature = privAccounts[0].Sign(config.GetString("chain_id"), unbondTx).(account.SignatureEd25519)
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case *types.RebondTx:
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rebondTx := tx.(*types.RebondTx)
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rebondTx.Signature = privAccounts[0].Sign(config.GetString("chain_id"), rebondTx).(account.SignatureEd25519)
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}
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return tx, nil
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}
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