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416 lines
13 KiB
416 lines
13 KiB
package internal
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import (
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"fmt"
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"net"
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"os"
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"os/signal"
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"time"
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"github.com/tendermint/tendermint/crypto/tmhash"
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"github.com/tendermint/tendermint/crypto/ed25519"
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"github.com/tendermint/tendermint/privval"
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"github.com/tendermint/tendermint/state"
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"github.com/tendermint/tendermint/libs/log"
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tmnet "github.com/tendermint/tendermint/libs/net"
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tmos "github.com/tendermint/tendermint/libs/os"
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"github.com/tendermint/tendermint/types"
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)
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// Test harness error codes (which act as exit codes when the test harness fails).
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const (
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NoError int = iota // 0
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ErrInvalidParameters // 1
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ErrMaxAcceptRetriesReached // 2
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ErrFailedToLoadGenesisFile // 3
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ErrFailedToCreateListener // 4
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ErrFailedToStartListener // 5
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ErrInterrupted // 6
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ErrOther // 7
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ErrTestPublicKeyFailed // 8
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ErrTestSignProposalFailed // 9
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ErrTestSignVoteFailed // 10
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)
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var voteTypes = []types.SignedMsgType{types.PrevoteType, types.PrecommitType}
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// TestHarnessError allows us to keep track of which exit code should be used
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// when exiting the main program.
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type TestHarnessError struct {
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Code int // The exit code to return
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Err error // The original error
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Info string // Any additional information
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}
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var _ error = (*TestHarnessError)(nil)
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// TestHarness allows for testing of a remote signer to ensure compatibility
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// with this version of Tendermint.
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type TestHarness struct {
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addr string
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signerClient *privval.SignerClient
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fpv *privval.FilePV
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chainID string
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acceptRetries int
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logger log.Logger
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exitWhenComplete bool
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exitCode int
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}
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// TestHarnessConfig provides configuration to set up a remote signer test
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// harness.
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type TestHarnessConfig struct {
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BindAddr string
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KeyFile string
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StateFile string
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GenesisFile string
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AcceptDeadline time.Duration
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ConnDeadline time.Duration
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AcceptRetries int
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SecretConnKey ed25519.PrivKeyEd25519
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ExitWhenComplete bool // Whether or not to call os.Exit when the harness has completed.
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}
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// timeoutError can be used to check if an error returned from the netp package
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// was due to a timeout.
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type timeoutError interface {
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Timeout() bool
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}
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// NewTestHarness will load Tendermint data from the given files (including
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// validator public/private keypairs and chain details) and create a new
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// harness.
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func NewTestHarness(logger log.Logger, cfg TestHarnessConfig) (*TestHarness, error) {
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keyFile := ExpandPath(cfg.KeyFile)
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stateFile := ExpandPath(cfg.StateFile)
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logger.Info("Loading private validator configuration", "keyFile", keyFile, "stateFile", stateFile)
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// NOTE: LoadFilePV ultimately calls os.Exit on failure. No error will be
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// returned if this call fails.
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fpv := privval.LoadFilePV(keyFile, stateFile)
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genesisFile := ExpandPath(cfg.GenesisFile)
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logger.Info("Loading chain ID from genesis file", "genesisFile", genesisFile)
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st, err := state.MakeGenesisDocFromFile(genesisFile)
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if err != nil {
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return nil, newTestHarnessError(ErrFailedToLoadGenesisFile, err, genesisFile)
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}
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logger.Info("Loaded genesis file", "chainID", st.ChainID)
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spv, err := newTestHarnessListener(logger, cfg)
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if err != nil {
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return nil, newTestHarnessError(ErrFailedToCreateListener, err, "")
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}
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signerClient, err := privval.NewSignerClient(spv)
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if err != nil {
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return nil, newTestHarnessError(ErrFailedToCreateListener, err, "")
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}
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return &TestHarness{
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addr: cfg.BindAddr,
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signerClient: signerClient,
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fpv: fpv,
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chainID: st.ChainID,
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acceptRetries: cfg.AcceptRetries,
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logger: logger,
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exitWhenComplete: cfg.ExitWhenComplete,
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exitCode: 0,
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}, nil
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}
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// Run will execute the tests associated with this test harness. The intention
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// here is to call this from one's `main` function, as the way it succeeds or
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// fails at present is to call os.Exit() with an exit code related to the error
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// that caused the tests to fail, or exit code 0 on success.
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func (th *TestHarness) Run() {
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt)
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go func() {
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for sig := range c {
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th.logger.Info("Caught interrupt, terminating...", "sig", sig)
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th.Shutdown(newTestHarnessError(ErrInterrupted, nil, ""))
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}
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}()
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th.logger.Info("Starting test harness")
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accepted := false
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var startErr error
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for acceptRetries := th.acceptRetries; acceptRetries > 0; acceptRetries-- {
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th.logger.Info("Attempting to accept incoming connection", "acceptRetries", acceptRetries)
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if err := th.signerClient.WaitForConnection(10 * time.Millisecond); err != nil {
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// if it wasn't a timeout error
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if _, ok := err.(timeoutError); !ok {
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th.logger.Error("Failed to start listener", "err", err)
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th.Shutdown(newTestHarnessError(ErrFailedToStartListener, err, ""))
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// we need the return statements in case this is being run
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// from a unit test - otherwise this function will just die
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// when os.Exit is called
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return
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}
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startErr = err
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} else {
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th.logger.Info("Accepted external connection")
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accepted = true
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break
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}
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}
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if !accepted {
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th.logger.Error("Maximum accept retries reached", "acceptRetries", th.acceptRetries)
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th.Shutdown(newTestHarnessError(ErrMaxAcceptRetriesReached, startErr, ""))
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return
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}
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// Run the tests
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if err := th.TestPublicKey(); err != nil {
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th.Shutdown(err)
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return
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}
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if err := th.TestSignProposal(); err != nil {
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th.Shutdown(err)
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return
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}
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if err := th.TestSignVote(); err != nil {
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th.Shutdown(err)
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return
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}
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th.logger.Info("SUCCESS! All tests passed.")
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th.Shutdown(nil)
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}
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// TestPublicKey just validates that we can (1) fetch the public key from the
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// remote signer, and (2) it matches the public key we've configured for our
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// local Tendermint version.
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func (th *TestHarness) TestPublicKey() error {
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th.logger.Info("TEST: Public key of remote signer")
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fpvk, err := th.fpv.GetPubKey()
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if err != nil {
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return err
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}
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th.logger.Info("Local", "pubKey", fpvk)
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sck, err := th.signerClient.GetPubKey()
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if err != nil {
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return err
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}
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th.logger.Info("Remote", "pubKey", sck)
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if fpvk != sck {
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th.logger.Error("FAILED: Local and remote public keys do not match")
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return newTestHarnessError(ErrTestPublicKeyFailed, nil, "")
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}
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return nil
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}
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// TestSignProposal makes sure the remote signer can successfully sign
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// proposals.
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func (th *TestHarness) TestSignProposal() error {
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th.logger.Info("TEST: Signing of proposals")
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// sha256 hash of "hash"
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hash := tmhash.Sum([]byte("hash"))
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prop := &types.Proposal{
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Type: types.ProposalType,
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Height: 100,
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Round: 0,
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POLRound: -1,
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BlockID: types.BlockID{
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Hash: hash,
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PartsHeader: types.PartSetHeader{
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Hash: hash,
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Total: 1000000,
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},
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},
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Timestamp: time.Now(),
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}
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propBytes := prop.SignBytes(th.chainID)
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if err := th.signerClient.SignProposal(th.chainID, prop); err != nil {
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th.logger.Error("FAILED: Signing of proposal", "err", err)
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return newTestHarnessError(ErrTestSignProposalFailed, err, "")
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}
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th.logger.Debug("Signed proposal", "prop", prop)
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// first check that it's a basically valid proposal
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if err := prop.ValidateBasic(); err != nil {
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th.logger.Error("FAILED: Signed proposal is invalid", "err", err)
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return newTestHarnessError(ErrTestSignProposalFailed, err, "")
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}
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sck, err := th.signerClient.GetPubKey()
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if err != nil {
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return err
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}
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// now validate the signature on the proposal
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if sck.VerifyBytes(propBytes, prop.Signature) {
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th.logger.Info("Successfully validated proposal signature")
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} else {
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th.logger.Error("FAILED: Proposal signature validation failed")
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return newTestHarnessError(ErrTestSignProposalFailed, nil, "signature validation failed")
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}
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return nil
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}
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// TestSignVote makes sure the remote signer can successfully sign all kinds of
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// votes.
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func (th *TestHarness) TestSignVote() error {
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th.logger.Info("TEST: Signing of votes")
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for _, voteType := range voteTypes {
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th.logger.Info("Testing vote type", "type", voteType)
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hash := tmhash.Sum([]byte("hash"))
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vote := &types.Vote{
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Type: voteType,
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Height: 101,
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Round: 0,
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BlockID: types.BlockID{
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Hash: hash,
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PartsHeader: types.PartSetHeader{
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Hash: hash,
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Total: 1000000,
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},
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},
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ValidatorIndex: 0,
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ValidatorAddress: tmhash.SumTruncated([]byte("addr")),
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Timestamp: time.Now(),
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}
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voteBytes := vote.SignBytes(th.chainID)
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// sign the vote
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if err := th.signerClient.SignVote(th.chainID, vote); err != nil {
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th.logger.Error("FAILED: Signing of vote", "err", err)
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return newTestHarnessError(ErrTestSignVoteFailed, err, fmt.Sprintf("voteType=%d", voteType))
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}
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th.logger.Debug("Signed vote", "vote", vote)
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// validate the contents of the vote
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if err := vote.ValidateBasic(); err != nil {
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th.logger.Error("FAILED: Signed vote is invalid", "err", err)
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return newTestHarnessError(ErrTestSignVoteFailed, err, fmt.Sprintf("voteType=%d", voteType))
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}
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sck, err := th.signerClient.GetPubKey()
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if err != nil {
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return err
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}
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// now validate the signature on the proposal
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if sck.VerifyBytes(voteBytes, vote.Signature) {
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th.logger.Info("Successfully validated vote signature", "type", voteType)
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} else {
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th.logger.Error("FAILED: Vote signature validation failed", "type", voteType)
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return newTestHarnessError(ErrTestSignVoteFailed, nil, "signature validation failed")
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}
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}
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return nil
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}
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// Shutdown will kill the test harness and attempt to close all open sockets
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// gracefully. If the supplied error is nil, it is assumed that the exit code
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// should be 0. If err is not nil, it will exit with an exit code related to the
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// error.
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func (th *TestHarness) Shutdown(err error) {
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var exitCode int
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if err == nil {
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exitCode = NoError
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} else if therr, ok := err.(*TestHarnessError); ok {
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exitCode = therr.Code
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} else {
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exitCode = ErrOther
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}
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th.exitCode = exitCode
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// in case sc.Stop() takes too long
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if th.exitWhenComplete {
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go func() {
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time.Sleep(time.Duration(5) * time.Second)
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th.logger.Error("Forcibly exiting program after timeout")
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os.Exit(exitCode)
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}()
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}
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err = th.signerClient.Close()
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if err != nil {
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th.logger.Error("Failed to cleanly stop listener: %s", err.Error())
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}
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if th.exitWhenComplete {
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os.Exit(exitCode)
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}
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}
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// newTestHarnessListener creates our client instance which we will use for testing.
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func newTestHarnessListener(logger log.Logger, cfg TestHarnessConfig) (*privval.SignerListenerEndpoint, error) {
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proto, addr := tmnet.ProtocolAndAddress(cfg.BindAddr)
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if proto == "unix" {
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// make sure the socket doesn't exist - if so, try to delete it
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if tmos.FileExists(addr) {
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if err := os.Remove(addr); err != nil {
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logger.Error("Failed to remove existing Unix domain socket", "addr", addr)
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return nil, err
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}
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}
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}
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ln, err := net.Listen(proto, addr)
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if err != nil {
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return nil, err
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}
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logger.Info("Listening", "proto", proto, "addr", addr)
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var svln net.Listener
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switch proto {
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case "unix":
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unixLn := privval.NewUnixListener(ln)
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privval.UnixListenerTimeoutAccept(cfg.AcceptDeadline)(unixLn)
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privval.UnixListenerTimeoutReadWrite(cfg.ConnDeadline)(unixLn)
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svln = unixLn
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case "tcp":
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tcpLn := privval.NewTCPListener(ln, cfg.SecretConnKey)
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privval.TCPListenerTimeoutAccept(cfg.AcceptDeadline)(tcpLn)
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privval.TCPListenerTimeoutReadWrite(cfg.ConnDeadline)(tcpLn)
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logger.Info("Resolved TCP address for listener", "addr", tcpLn.Addr())
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svln = tcpLn
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default:
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logger.Error("Unsupported protocol (must be unix:// or tcp://)", "proto", proto)
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return nil, newTestHarnessError(ErrInvalidParameters, nil, fmt.Sprintf("Unsupported protocol: %s", proto))
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}
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return privval.NewSignerListenerEndpoint(logger, svln), nil
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}
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func newTestHarnessError(code int, err error, info string) *TestHarnessError {
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return &TestHarnessError{
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Code: code,
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Err: err,
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Info: info,
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}
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}
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func (e *TestHarnessError) Error() string {
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var msg string
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switch e.Code {
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case ErrInvalidParameters:
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msg = "Invalid parameters supplied to application"
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case ErrMaxAcceptRetriesReached:
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msg = "Maximum accept retries reached"
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case ErrFailedToLoadGenesisFile:
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msg = "Failed to load genesis file"
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case ErrFailedToCreateListener:
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msg = "Failed to create listener"
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case ErrFailedToStartListener:
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msg = "Failed to start listener"
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case ErrInterrupted:
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msg = "Interrupted"
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case ErrTestPublicKeyFailed:
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msg = "Public key validation test failed"
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case ErrTestSignProposalFailed:
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msg = "Proposal signing validation test failed"
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case ErrTestSignVoteFailed:
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msg = "Vote signing validation test failed"
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default:
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msg = "Unknown error"
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}
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if len(e.Info) > 0 {
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msg = fmt.Sprintf("%s: %s", msg, e.Info)
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}
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if e.Err != nil {
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msg = fmt.Sprintf("%s (original error: %s)", msg, e.Err.Error())
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}
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return msg
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}
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