From 33e199c9939e110bd677e7b3e43547c6e55bb6e2 Mon Sep 17 00:00:00 2001 From: Rasmus Dahlberg Date: Mon, 13 Sep 2021 13:26:06 +0200 Subject: fixed {st,stfe,system-transparency} -> sigsum --- cmd/sigsum_log_go/.gitignore | 1 + cmd/sigsum_log_go/README.md | 57 ++++++++++++++ cmd/sigsum_log_go/main.go | 177 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 235 insertions(+) create mode 100644 cmd/sigsum_log_go/.gitignore create mode 100644 cmd/sigsum_log_go/README.md create mode 100644 cmd/sigsum_log_go/main.go (limited to 'cmd/sigsum_log_go') diff --git a/cmd/sigsum_log_go/.gitignore b/cmd/sigsum_log_go/.gitignore new file mode 100644 index 0000000..254defd --- /dev/null +++ b/cmd/sigsum_log_go/.gitignore @@ -0,0 +1 @@ +server diff --git a/cmd/sigsum_log_go/README.md b/cmd/sigsum_log_go/README.md new file mode 100644 index 0000000..5e419ba --- /dev/null +++ b/cmd/sigsum_log_go/README.md @@ -0,0 +1,57 @@ +# Run Trillian + sigsum-log-go locally +Trillian uses a database. So, we will need to set that up. It is documented +[here](https://github.com/google/trillian#mysql-setup), and how to check that it +is setup properly +[here](https://github.com/google/certificate-transparency-go/blob/master/trillian/docs/ManualDeployment.md#data-storage). + +Other than the database we need Trillian log signer, Trillian log server, and +sigsum-log-go. +``` +$ go install github.com/google/trillian/cmd/trillian_log_signer +$ go install github.com/google/trillian/cmd/trillian_log_server +$ go install +``` + +Start Trillian log signer: +``` +trillian_log_signer --logtostderr -v 9 --force_master --rpc_endpoint=localhost:6961 --http_endpoint=localhost:6964 --num_sequencers 1 --sequencer_interval 100ms --batch_size 100 +``` + +Start Trillian log server: +``` +trillian_log_server --logtostderr -v 9 --rpc_endpoint=localhost:6962 --http_endpoint=localhost:6963 +``` + +As described in more detail +[here](https://github.com/google/certificate-transparency-go/blob/master/trillian/docs/ManualDeployment.md#trillian-services), +we need to provision a Merkle tree once: +``` +$ go install github.com/google/trillian/cmd/createtree +$ createtree --admin_server localhost:6962 + +``` + +Hang on to ``. Our sigsum-log-go instance will use it when talking to +the Trillian log server to specify which Merkle tree we are working against. + +(If you take a look in the `Trees` table you will see that the tree has been +provisioned.) + +We will also need a public key-pair for sigsum-log-go. +``` +$ go install golang.sigsum.org/sigsum-log-go/cmd/tmp/keygen +$ ./keygen +sk: +vk: +``` + +Start sigsum-log-go: +``` +$ tree_id= +$ sk= +$ sigsum_log_go --logtostderr -v 9 --http_endpoint localhost:6965 --log_rpc_server localhost:6962 --trillian_id $tree_id --key $sk +``` + +Quick test: +- curl http://localhost:6965/sigsum/v0/get-tree-head-latest +- try `submit` and `cosign` commands in `cmd/tmp` diff --git a/cmd/sigsum_log_go/main.go b/cmd/sigsum_log_go/main.go new file mode 100644 index 0000000..6189b1d --- /dev/null +++ b/cmd/sigsum_log_go/main.go @@ -0,0 +1,177 @@ +// Package main provides a sigsum-log-go binary +package main + +import ( + "context" + "crypto" + "crypto/ed25519" + "encoding/hex" + "flag" + "fmt" + "net/http" + "os" + "os/signal" + "strings" + "sync" + "syscall" + "time" + + "github.com/golang/glog" + "github.com/google/trillian" + "github.com/prometheus/client_golang/prometheus/promhttp" + "google.golang.org/grpc" + + sigsum "golang.sigsum.org/sigsum-log-go/pkg/instance" + "golang.sigsum.org/sigsum-log-go/pkg/state" + trillianWrapper "golang.sigsum.org/sigsum-log-go/pkg/trillian" + "golang.sigsum.org/sigsum-log-go/pkg/types" +) + +var ( + httpEndpoint = flag.String("http_endpoint", "localhost:6965", "host:port specification of where sigsum-log-go serves clients") + rpcBackend = flag.String("log_rpc_server", "localhost:6962", "host:port specification of where Trillian serves clients") + prefix = flag.String("prefix", "", "a prefix that proceeds /sigsum/v0/") + trillianID = flag.Int64("trillian_id", 0, "log identifier in the Trillian database") + deadline = flag.Duration("deadline", time.Second*10, "deadline for backend requests") + key = flag.String("key", "", "hex-encoded Ed25519 signing key") + witnesses = flag.String("witnesses", "", "comma-separated list of trusted witness verification keys in hex") + maxRange = flag.Int64("max_range", 10, "maximum number of entries that can be retrived in a single request") + interval = flag.Duration("interval", time.Second*30, "interval used to rotate the log's cosigned STH") +) + +func main() { + flag.Parse() + defer glog.Flush() + + // wait for clean-up before exit + var wg sync.WaitGroup + defer wg.Wait() + ctx, cancel := context.WithCancel(context.Background()) + defer cancel() + + glog.V(3).Infof("configuring sigsum-log-go instance...") + instance, err := setupInstanceFromFlags() + if err != nil { + glog.Errorf("setupInstance: %v", err) + return + } + + glog.V(3).Infof("spawning state manager") + go func() { + wg.Add(1) + defer wg.Done() + instance.Stateman.Run(ctx) + glog.Errorf("state manager shutdown") + cancel() // must have state manager running + }() + + glog.V(3).Infof("spawning await") + server := http.Server{Addr: *httpEndpoint} + go await(ctx, func() { + wg.Add(1) + defer wg.Done() + ctxInner, _ := context.WithTimeout(ctx, time.Second*60) + glog.Infof("Shutting down HTTP server...") + server.Shutdown(ctxInner) + glog.V(3).Infof("HTTP server shutdown") + glog.Infof("Shutting down spawned go routines...") + cancel() + }) + + glog.Infof("Serving on %v/%v", *httpEndpoint, *prefix) + if err = server.ListenAndServe(); err != http.ErrServerClosed { + glog.Errorf("ListenAndServe: %v", err) + } +} + +// SetupInstance sets up a new sigsum-log-go instance from flags +func setupInstanceFromFlags() (*sigsum.Instance, error) { + var i sigsum.Instance + var err error + + // Setup log configuration + i.Signer, i.LogID, err = newLogIdentity(*key) + if err != nil { + return nil, fmt.Errorf("newLogIdentity: %v", err) + } + i.TreeID = *trillianID + i.Prefix = *prefix + i.MaxRange = *maxRange + i.Deadline = *deadline + i.Interval = *interval + i.Witnesses, err = newWitnessMap(*witnesses) + if err != nil { + return nil, fmt.Errorf("newWitnessMap: %v", err) + } + + // Setup log client + dialOpts := []grpc.DialOption{grpc.WithInsecure(), grpc.WithBlock(), grpc.WithTimeout(i.Deadline)} + conn, err := grpc.Dial(*rpcBackend, dialOpts...) + if err != nil { + return nil, fmt.Errorf("Dial: %v", err) + } + i.Client = &trillianWrapper.TrillianClient{ + TreeID: i.TreeID, + GRPC: trillian.NewTrillianLogClient(conn), + } + + // Setup state manager + i.Stateman, err = state.NewStateManagerSingle(i.Client, i.Signer, i.Interval, i.Deadline) + if err != nil { + return nil, fmt.Errorf("NewStateManager: %v", err) + } + + // Register HTTP endpoints + mux := http.NewServeMux() + http.Handle("/", mux) + for _, handler := range i.Handlers() { + glog.V(3).Infof("adding handler: %s", handler.Path()) + mux.Handle(handler.Path(), handler) + } + glog.V(3).Infof("Adding prometheus handler on path: /metrics") + http.Handle("/metrics", promhttp.Handler()) + + return &i, nil +} + +func newLogIdentity(key string) (crypto.Signer, string, error) { + buf, err := hex.DecodeString(key) + if err != nil { + return nil, "", fmt.Errorf("DecodeString: %v", err) + } + sk := crypto.Signer(ed25519.PrivateKey(buf)) + vk := sk.Public().(ed25519.PublicKey) + return sk, hex.EncodeToString([]byte(vk[:])), nil +} + +// newWitnessMap creates a new map of trusted witnesses +func newWitnessMap(witnesses string) (map[[types.HashSize]byte][types.VerificationKeySize]byte, error) { + w := make(map[[types.HashSize]byte][types.VerificationKeySize]byte) + if len(witnesses) > 0 { + for _, witness := range strings.Split(witnesses, ",") { + b, err := hex.DecodeString(witness) + if err != nil { + return nil, fmt.Errorf("DecodeString: %v", err) + } + + var vk [types.VerificationKeySize]byte + if n := copy(vk[:], b); n != types.VerificationKeySize { + return nil, fmt.Errorf("Invalid verification key size: %v", n) + } + w[*types.Hash(vk[:])] = vk + } + } + return w, nil +} + +// await waits for a shutdown signal and then runs a clean-up function +func await(ctx context.Context, done func()) { + sigs := make(chan os.Signal, 1) + signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM) + select { + case <-sigs: + case <-ctx.Done(): + } + glog.V(3).Info("received shutdown signal") + done() +} -- cgit v1.2.3