115 lines
3.1 KiB
Go
115 lines
3.1 KiB
Go
package vm
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import (
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ffi "github.com/filecoin-project/filecoin-ffi"
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"github.com/filecoin-project/go-address"
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"github.com/filecoin-project/go-sectorbuilder"
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"github.com/filecoin-project/specs-actors/actors/abi"
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"github.com/filecoin-project/specs-actors/actors/crypto"
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"github.com/filecoin-project/specs-actors/actors/runtime"
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"github.com/ipfs/go-cid"
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mh "github.com/multiformats/go-multihash"
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"golang.org/x/xerrors"
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)
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func init() {
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mh.Codes[0xf104] = "filecoin"
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}
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// Actual type is defined in chain/types/vmcontext.go because the VMContext interface is there
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func Syscalls(verifier sectorbuilder.Verifier) runtime.Syscalls {
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return &syscallShim{verifier}
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}
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type syscallShim struct {
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verifier sectorbuilder.Verifier
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}
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func (ss *syscallShim) ComputeUnsealedSectorCID(ssize abi.SectorSize, pieces []abi.PieceInfo) (cid.Cid, error) {
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// TODO: does this pull in unwanted dependencies?
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var ffipieces []ffi.PublicPieceInfo
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for _, p := range pieces {
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ffipieces = append(ffipieces, ffi.PublicPieceInfo{
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Size: p.Size.Unpadded(),
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CommP: cidToCommD(p.PieceCID),
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})
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}
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commd, err := sectorbuilder.GenerateDataCommitment(ssize, ffipieces)
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if err != nil {
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log.Errorf("generate data commitment failed: %s", err)
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return cid.Undef, err
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}
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// TODO: pulling these numbers kinda out of an unmerged PR
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hb, err := mh.Encode(commd[:], 0xf104)
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if err != nil {
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log.Errorf("mh encode failed: %s", err)
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return cid.Undef, err
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}
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return cid.NewCidV1(0xf101, mh.Multihash(hb)), nil
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}
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func (ss *syscallShim) HashBlake2b(data []byte) [32]byte {
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panic("NYI")
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}
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func (ss *syscallShim) VerifyConsensusFault(a, b []byte) bool {
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panic("NYI")
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}
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func (ss *syscallShim) VerifyPoSt(ssize abi.SectorSize, proof abi.PoStVerifyInfo) (bool, error) {
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panic("NYI")
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}
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func cidToCommD(c cid.Cid) [32]byte {
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b := c.Bytes()
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var out [32]byte
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copy(out[:], b[len(b)-32:])
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return out
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}
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func cidToCommR(c cid.Cid) [32]byte {
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b := c.Bytes()
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var out [32]byte
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copy(out[:], b[len(b)-32:])
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return out
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}
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func (ss *syscallShim) VerifySeal(ssize abi.SectorSize, info abi.SealVerifyInfo) (bool, error) {
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//_, span := trace.StartSpan(ctx, "ValidatePoRep")
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//defer span.End()
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commD := cidToCommD(info.UnsealedCID)
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commR := cidToCommR(info.OnChain.SealedCID)
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miner, err := address.NewIDAddress(uint64(info.Miner))
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if err != nil {
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return false, xerrors.Errorf("weirdly failed to construct address: %w", err)
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}
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ticket := []byte(info.Randomness)
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proof := []byte(info.OnChain.Proof)
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seed := []byte(info.InteractiveRandomness)
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//func(ctx context.Context, maddr address.Address, ssize abi.SectorSize, commD, commR, ticket, proof, seed []byte, sectorID abi.SectorNumber)
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ok, err := ss.verifier.VerifySeal(ssize, commR[:], commD[:], miner, ticket, seed, info.SectorID.Number, proof)
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if err != nil {
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return false, xerrors.Errorf("failed to validate PoRep: %w", err)
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}
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return ok, nil
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}
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func (ss *syscallShim) VerifySignature(sig crypto.Signature, addr address.Address, input []byte) bool {
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return true
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/* // TODO: in genesis setup, we are currently faking signatures
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if err := ss.rt.vmctx.VerifySignature(&sig, addr, input); err != nil {
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return false
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}
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return true
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*/
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}
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