130 lines
3.5 KiB
Go
130 lines
3.5 KiB
Go
package vm
|
|
|
|
import (
|
|
ffi "github.com/filecoin-project/filecoin-ffi"
|
|
"github.com/filecoin-project/go-address"
|
|
commcid "github.com/filecoin-project/go-fil-commcid"
|
|
"github.com/filecoin-project/go-sectorbuilder"
|
|
"github.com/filecoin-project/lotus/lib/zerocomm"
|
|
"github.com/filecoin-project/specs-actors/actors/abi"
|
|
"github.com/filecoin-project/specs-actors/actors/crypto"
|
|
"github.com/filecoin-project/specs-actors/actors/runtime"
|
|
"github.com/ipfs/go-cid"
|
|
mh "github.com/multiformats/go-multihash"
|
|
"golang.org/x/xerrors"
|
|
"math/bits"
|
|
)
|
|
|
|
func init() {
|
|
mh.Codes[0xf104] = "filecoin"
|
|
}
|
|
|
|
// Actual type is defined in chain/types/vmcontext.go because the VMContext interface is there
|
|
|
|
func Syscalls(verifier sectorbuilder.Verifier) runtime.Syscalls {
|
|
return &syscallShim{verifier}
|
|
}
|
|
|
|
type syscallShim struct {
|
|
verifier sectorbuilder.Verifier
|
|
}
|
|
|
|
func (ss *syscallShim) ComputeUnsealedSectorCID(ssize abi.SectorSize, pieces []abi.PieceInfo) (cid.Cid, error) {
|
|
// TODO: does this pull in unwanted dependencies?
|
|
var ffipieces []ffi.PublicPieceInfo
|
|
var sum abi.PaddedPieceSize
|
|
for _, p := range pieces {
|
|
ffipieces = append(ffipieces, ffi.PublicPieceInfo{
|
|
Size: p.Size.Unpadded(),
|
|
CommP: cidToCommD(p.PieceCID),
|
|
})
|
|
sum += p.Size
|
|
}
|
|
|
|
{
|
|
// pad remaining space with 0 CommPs
|
|
toFill := uint64(abi.PaddedPieceSize(ssize) - sum)
|
|
n := bits.OnesCount64(toFill)
|
|
for i := 0; i < n; i++ {
|
|
next := bits.TrailingZeros64(toFill)
|
|
psize := uint64(1) << next
|
|
toFill ^= psize
|
|
|
|
unpadded := abi.PaddedPieceSize(psize).Unpadded()
|
|
ffipieces = append(ffipieces, ffi.PublicPieceInfo{
|
|
Size: unpadded,
|
|
CommP: zerocomm.ForSize(unpadded),
|
|
})
|
|
}
|
|
}
|
|
|
|
commd, err := sectorbuilder.GenerateDataCommitment(ssize, ffipieces)
|
|
if err != nil {
|
|
log.Errorf("generate data commitment failed: %s", err)
|
|
return cid.Undef, err
|
|
}
|
|
|
|
return commcid.DataCommitmentV1ToCID(commd[:]), nil
|
|
}
|
|
|
|
func (ss *syscallShim) HashBlake2b(data []byte) [32]byte {
|
|
panic("NYI")
|
|
}
|
|
|
|
func (ss *syscallShim) VerifyConsensusFault(a, b []byte) bool {
|
|
panic("NYI")
|
|
}
|
|
|
|
func (ss *syscallShim) VerifyPoSt(ssize abi.SectorSize, proof abi.PoStVerifyInfo) (bool, error) {
|
|
panic("NYI")
|
|
}
|
|
|
|
func cidToCommD(c cid.Cid) [32]byte {
|
|
b := c.Bytes()
|
|
var out [32]byte
|
|
copy(out[:], b[len(b)-32:])
|
|
return out
|
|
}
|
|
|
|
func cidToCommR(c cid.Cid) [32]byte {
|
|
b := c.Bytes()
|
|
var out [32]byte
|
|
copy(out[:], b[len(b)-32:])
|
|
return out
|
|
}
|
|
|
|
func (ss *syscallShim) VerifySeal(ssize abi.SectorSize, info abi.SealVerifyInfo) (bool, error) {
|
|
//_, span := trace.StartSpan(ctx, "ValidatePoRep")
|
|
//defer span.End()
|
|
|
|
commD := cidToCommD(info.UnsealedCID)
|
|
commR := cidToCommR(info.OnChain.SealedCID)
|
|
|
|
miner, err := address.NewIDAddress(uint64(info.Miner))
|
|
if err != nil {
|
|
return false, xerrors.Errorf("weirdly failed to construct address: %w", err)
|
|
}
|
|
|
|
ticket := []byte(info.Randomness)
|
|
proof := []byte(info.OnChain.Proof)
|
|
seed := []byte(info.InteractiveRandomness)
|
|
|
|
//func(ctx context.Context, maddr address.Address, ssize abi.SectorSize, commD, commR, ticket, proof, seed []byte, sectorID abi.SectorNumber)
|
|
ok, err := ss.verifier.VerifySeal(ssize, commR[:], commD[:], miner, ticket, seed, info.SectorID.Number, proof)
|
|
if err != nil {
|
|
return false, xerrors.Errorf("failed to validate PoRep: %w", err)
|
|
}
|
|
|
|
return ok, nil
|
|
}
|
|
|
|
func (ss *syscallShim) VerifySignature(sig crypto.Signature, addr address.Address, input []byte) bool {
|
|
return true
|
|
/* // TODO: in genesis setup, we are currently faking signatures
|
|
if err := ss.rt.vmctx.VerifySignature(&sig, addr, input); err != nil {
|
|
return false
|
|
}
|
|
return true
|
|
*/
|
|
}
|