lotus/node/impl/full/multisig.go

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package full
import (
"context"
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"github.com/filecoin-project/specs-actors/actors/abi/big"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/chain/actors"
"github.com/filecoin-project/lotus/chain/types"
"github.com/filecoin-project/specs-actors/actors/abi"
"github.com/filecoin-project/specs-actors/actors/builtin"
init_ "github.com/filecoin-project/specs-actors/actors/builtin/init"
samsig "github.com/filecoin-project/specs-actors/actors/builtin/multisig"
"github.com/ipfs/go-cid"
"github.com/minio/blake2b-simd"
"go.uber.org/fx"
"golang.org/x/xerrors"
)
type MsigAPI struct {
fx.In
WalletAPI WalletAPI
StateAPI StateAPI
MpoolAPI MpoolAPI
}
// TODO: remove gp (gasPrice) from arguemnts
func (a *MsigAPI) MsigCreate(ctx context.Context, req uint64, addrs []address.Address, duration abi.ChainEpoch, val types.BigInt, src address.Address, gp types.BigInt) (cid.Cid, error) {
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lenAddrs := uint64(len(addrs))
if lenAddrs < req {
return cid.Undef, xerrors.Errorf("cannot require signing of more addresses than provided for multisig")
}
if req == 0 {
req = lenAddrs
}
if src == address.Undef {
return cid.Undef, xerrors.Errorf("must provide source address")
}
// Set up constructor parameters for multisig
msigParams := &samsig.ConstructorParams{
Signers: addrs,
NumApprovalsThreshold: req,
UnlockDuration: duration,
}
enc, actErr := actors.SerializeParams(msigParams)
if actErr != nil {
return cid.Undef, actErr
}
// new actors are created by invoking 'exec' on the init actor with the constructor params
execParams := &init_.ExecParams{
CodeCID: builtin.MultisigActorCodeID,
ConstructorParams: enc,
}
enc, actErr = actors.SerializeParams(execParams)
if actErr != nil {
return cid.Undef, actErr
}
// now we create the message to send this with
msg := types.Message{
To: builtin.InitActorAddr,
From: src,
Method: builtin.MethodsInit.Exec,
Params: enc,
Value: val,
}
// send the message out to the network
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smsg, err := a.MpoolAPI.MpoolPushMessage(ctx, &msg, big.Zero())
if err != nil {
return cid.Undef, err
}
return smsg.Cid(), nil
}
func (a *MsigAPI) MsigPropose(ctx context.Context, msig address.Address, to address.Address, amt types.BigInt, src address.Address, method uint64, params []byte) (cid.Cid, error) {
if msig == address.Undef {
return cid.Undef, xerrors.Errorf("must provide a multisig address for proposal")
}
if to == address.Undef {
return cid.Undef, xerrors.Errorf("must provide a target address for proposal")
}
if amt.Sign() == -1 {
return cid.Undef, xerrors.Errorf("must provide a positive amount for proposed send")
}
if src == address.Undef {
return cid.Undef, xerrors.Errorf("must provide source address")
}
enc, actErr := actors.SerializeParams(&samsig.ProposeParams{
To: to,
Value: amt,
Method: abi.MethodNum(method),
Params: params,
})
if actErr != nil {
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return cid.Undef, xerrors.Errorf("failed to serialize parameters: %w", actErr)
}
msg := &types.Message{
To: msig,
From: src,
Value: types.NewInt(0),
Method: builtin.MethodsMultisig.Propose,
Params: enc,
}
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smsg, err := a.MpoolAPI.MpoolPushMessage(ctx, msg, big.Zero())
if err != nil {
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return cid.Undef, xerrors.Errorf("failed to push message: %w", err)
}
return smsg.Cid(), nil
}
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func (a *MsigAPI) MsigSwapPropose(ctx context.Context, msig address.Address, src address.Address, oldAdd address.Address, newAdd address.Address) (cid.Cid, error) {
enc, actErr := serializeSwapParams(oldAdd, newAdd)
if actErr != nil {
return cid.Undef, actErr
}
return a.MsigPropose(ctx, msig, msig, big.Zero(), src, uint64(builtin.MethodsMultisig.SwapSigner), enc)
}
func (a *MsigAPI) MsigSwapApprove(ctx context.Context, msig address.Address, src address.Address, txID uint64, proposer address.Address, oldAdd address.Address, newAdd address.Address) (cid.Cid, error) {
enc, actErr := serializeSwapParams(oldAdd, newAdd)
if actErr != nil {
return cid.Undef, actErr
}
return a.MsigApprove(ctx, msig, txID, proposer, msig, big.Zero(), src, uint64(builtin.MethodsMultisig.SwapSigner), enc)
}
func (a *MsigAPI) MsigSwapCancel(ctx context.Context, msig address.Address, src address.Address, txID uint64, oldAdd address.Address, newAdd address.Address) (cid.Cid, error) {
enc, actErr := serializeSwapParams(oldAdd, newAdd)
if actErr != nil {
return cid.Undef, actErr
}
return a.MsigCancel(ctx, msig, txID, msig, big.Zero(), src, uint64(builtin.MethodsMultisig.SwapSigner), enc)
}
func (a *MsigAPI) MsigApprove(ctx context.Context, msig address.Address, txID uint64, proposer address.Address, to address.Address, amt types.BigInt, src address.Address, method uint64, params []byte) (cid.Cid, error) {
return a.msigApproveOrCancel(ctx, api.MsigApprove, msig, txID, proposer, to, amt, src, method, params)
}
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func (a *MsigAPI) MsigCancel(ctx context.Context, msig address.Address, txID uint64, to address.Address, amt types.BigInt, src address.Address, method uint64, params []byte) (cid.Cid, error) {
return a.msigApproveOrCancel(ctx, api.MsigCancel, msig, txID, src, to, amt, src, method, params)
}
func (a *MsigAPI) msigApproveOrCancel(ctx context.Context, operation api.MsigProposeResponse, msig address.Address, txID uint64, proposer address.Address, to address.Address, amt types.BigInt, src address.Address, method uint64, params []byte) (cid.Cid, error) {
if msig == address.Undef {
return cid.Undef, xerrors.Errorf("must provide multisig address")
}
if to == address.Undef {
return cid.Undef, xerrors.Errorf("must provide proposed target address")
}
if amt.Sign() == -1 {
return cid.Undef, xerrors.Errorf("must provide the positive amount that was proposed")
}
if src == address.Undef {
return cid.Undef, xerrors.Errorf("must provide source address")
}
if proposer.Protocol() != address.ID {
proposerID, err := a.StateAPI.StateLookupID(ctx, proposer, types.EmptyTSK)
if err != nil {
return cid.Undef, err
}
proposer = proposerID
}
p := samsig.ProposalHashData{
Requester: proposer,
To: to,
Value: amt,
Method: abi.MethodNum(method),
Params: params,
}
pser, err := p.Serialize()
if err != nil {
return cid.Undef, err
}
phash := blake2b.Sum256(pser)
enc, err := actors.SerializeParams(&samsig.TxnIDParams{
ID: samsig.TxnID(txID),
ProposalHash: phash[:],
})
if err != nil {
return cid.Undef, err
}
var msigResponseMethod abi.MethodNum
/*
We pass in a MsigProposeResponse instead of MethodNum to
tighten the possible inputs to just Approve and Cancel.
*/
switch operation {
case api.MsigApprove:
msigResponseMethod = builtin.MethodsMultisig.Approve
case api.MsigCancel:
msigResponseMethod = builtin.MethodsMultisig.Cancel
default:
return cid.Undef, xerrors.Errorf("Invalid operation for msigApproveOrCancel")
}
msg := &types.Message{
To: msig,
From: src,
Value: types.NewInt(0),
Method: msigResponseMethod,
Params: enc,
}
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smsg, err := a.MpoolAPI.MpoolPushMessage(ctx, msg, big.Zero())
if err != nil {
return cid.Undef, err
}
return smsg.Cid(), nil
}
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func serializeSwapParams(old address.Address, new address.Address) ([]byte, error) {
enc, actErr := actors.SerializeParams(&samsig.SwapSignerParams{
From: old,
To: new,
})
if actErr != nil {
return nil, actErr
}
return enc, nil
}