75 lines
1.8 KiB
Go
75 lines
1.8 KiB
Go
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package main
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import (
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"encoding/hex"
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"fmt"
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"strconv"
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"github.com/filecoin-project/go-state-types/crypto"
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"github.com/filecoin-project/lotus/lib/sigs"
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"github.com/filecoin-project/go-address"
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"github.com/urfave/cli/v2"
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"golang.org/x/xerrors"
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)
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var signaturesCmd = &cli.Command{
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Name: "signatures",
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Usage: "tools involving signatures",
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Subcommands: []*cli.Command{
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sigsVerifyVoteCmd,
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},
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}
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var sigsVerifyVoteCmd = &cli.Command{
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Name: "verify-vote",
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Description: "can be used to verify signed votes being submitted for FILPolls",
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Usage: "<FIPnumber> <signingAddress> <signature>",
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Action: func(cctx *cli.Context) error {
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if cctx.Args().Len() != 3 {
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return xerrors.Errorf("usage: verify-vote <FIPnumber> <signingAddress> <signature>")
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}
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fip, err := strconv.ParseInt(cctx.Args().First(), 10, 64)
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if err != nil {
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return xerrors.Errorf("couldn't parse FIP number: %w", err)
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}
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addr, err := address.NewFromString(cctx.Args().Get(1))
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if err != nil {
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return xerrors.Errorf("couldn't parse signing address: %w", err)
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}
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sigBytes, err := hex.DecodeString(cctx.Args().Get(2))
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if err != nil {
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return xerrors.Errorf("couldn't parse sig: %w", err)
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}
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var sig crypto.Signature
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if err := sig.UnmarshalBinary(sigBytes); err != nil {
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return xerrors.Errorf("couldn't unmarshal sig: %w", err)
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}
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switch fip {
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case 14:
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approve := []byte("7 - Approve")
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if sigs.Verify(&sig, addr, approve) == nil {
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fmt.Println("valid vote for approving FIP-0014")
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return nil
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}
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reject := []byte("7 - Reject")
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if sigs.Verify(&sig, addr, reject) == nil {
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fmt.Println("valid vote for rejecting FIP-0014")
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return nil
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}
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return xerrors.Errorf("invalid vote for FIP-0014!")
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default:
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return xerrors.Errorf("unrecognized FIP number")
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}
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},
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}
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