108 lines
2.3 KiB
Go
108 lines
2.3 KiB
Go
package lp2p
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import (
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"crypto/rand"
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"time"
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"github.com/filecoin-project/lotus/build"
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"github.com/filecoin-project/lotus/chain/types"
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"golang.org/x/xerrors"
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logging "github.com/ipfs/go-log/v2"
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"github.com/libp2p/go-libp2p"
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connmgr "github.com/libp2p/go-libp2p-connmgr"
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"github.com/libp2p/go-libp2p-core/crypto"
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"github.com/libp2p/go-libp2p-core/peer"
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"github.com/libp2p/go-libp2p-core/peerstore"
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"go.uber.org/fx"
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)
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var log = logging.Logger("p2pnode")
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const kstorePrivkey = "libp2p-host"
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type Libp2pOpts struct {
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fx.Out
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Opts []libp2p.Option `group:"libp2p"`
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}
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func PrivKey(ks types.KeyStore) (crypto.PrivKey, error) {
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k, err := ks.Get(kstorePrivkey)
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if err == nil {
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return crypto.UnmarshalPrivateKey(k.PrivateKey)
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}
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if !xerrors.Is(err, types.ErrKeyInfoNotFound) {
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return nil, err
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}
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pk, err := genLibp2pKey()
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if err != nil {
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return nil, err
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}
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kbytes, err := pk.Bytes()
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if err != nil {
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return nil, err
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}
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if err := ks.Put(kstorePrivkey, types.KeyInfo{
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Type: kstorePrivkey,
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PrivateKey: kbytes,
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}); err != nil {
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return nil, err
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}
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return pk, nil
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}
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func genLibp2pKey() (crypto.PrivKey, error) {
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pk, _, err := crypto.GenerateEd25519Key(rand.Reader)
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if err != nil {
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return nil, err
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}
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return pk, nil
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}
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// Misc options
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func ConnectionManager(low, high uint, grace time.Duration, protected []string) func() (opts Libp2pOpts, err error) {
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return func() (Libp2pOpts, error) {
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cm := connmgr.NewConnManager(int(low), int(high), grace)
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for _, p := range protected {
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pid, err := peer.IDFromString(p)
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if err != nil {
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return Libp2pOpts{}, xerrors.Errorf("failed to parse peer ID in protected peers array: %w", err)
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}
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cm.Protect(pid, "config-prot")
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}
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infos, err := build.BuiltinBootstrap()
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if err != nil {
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return Libp2pOpts{}, xerrors.Errorf("failed to get bootstrap peers: %w", err)
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}
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for _, inf := range infos {
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cm.Protect(inf.ID, "bootstrap")
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}
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return Libp2pOpts{
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Opts: []libp2p.Option{libp2p.ConnectionManager(cm)},
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}, nil
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}
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}
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func PstoreAddSelfKeys(id peer.ID, sk crypto.PrivKey, ps peerstore.Peerstore) error {
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if err := ps.AddPubKey(id, sk.GetPublic()); err != nil {
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return err
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}
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return ps.AddPrivKey(id, sk)
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}
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func simpleOpt(opt libp2p.Option) func() (opts Libp2pOpts, err error) {
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return func() (opts Libp2pOpts, err error) {
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opts.Opts = append(opts.Opts, opt)
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return
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}
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}
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