/
main.go
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/
main.go
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// Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package main contains the implementation and entry point for the createtree
// command.
//
// Example usage:
// $ ./createtree --admin_server=host:port
//
// The command outputs the tree ID of the created tree to stdout, or an error to
// stderr in case of failure. The output is minimal to allow for easy usage in
// automated scripts.
//
// Several flags are provided to configure the create tree, most of which try to
// assume reasonable defaults. Multiple types of private keys may be supported;
// one has only to set the appropriate --private_key_format value and supply the
// corresponding flags for the chosen key type.
package main
import (
"context"
"errors"
"flag"
"fmt"
"time"
"github.com/golang/glog"
"github.com/golang/protobuf/ptypes"
"github.com/google/trillian"
"github.com/google/trillian/client"
"github.com/google/trillian/cmd"
"github.com/google/trillian/cmd/createtree/keys"
"github.com/google/trillian/crypto/keyspb"
"github.com/google/trillian/crypto/sigpb"
"google.golang.org/grpc"
)
var (
adminServerAddr = flag.String("admin_server", "", "Address of the gRPC Trillian Admin Server (host:port)")
rpcDeadline = flag.Duration("rpc_deadline", time.Second*10, "Deadline for RPC requests")
treeState = flag.String("tree_state", trillian.TreeState_ACTIVE.String(), "State of the new tree")
treeType = flag.String("tree_type", trillian.TreeType_LOG.String(), "Type of the new tree")
hashStrategy = flag.String("hash_strategy", trillian.HashStrategy_RFC6962_SHA256.String(), "Hash strategy (aka preimage protection) of the new tree")
hashAlgorithm = flag.String("hash_algorithm", sigpb.DigitallySigned_SHA256.String(), "Hash algorithm of the new tree")
signatureAlgorithm = flag.String("signature_algorithm", sigpb.DigitallySigned_ECDSA.String(), "Signature algorithm of the new tree")
displayName = flag.String("display_name", "", "Display name of the new tree")
description = flag.String("description", "", "Description of the new tree")
maxRootDuration = flag.Duration("max_root_duration", 0, "Interval after which a new signed root is produced despite no submissions; zero means never")
privateKeyFormat = flag.String("private_key_format", "", "Type of protobuf message to send the key as (PrivateKey, PEMKeyFile, or PKCS11ConfigFile). If empty, a key will be generated for you by Trillian.")
configFile = flag.String("config", "", "Config file containing flags, file contents can be overridden by command line flags")
errAdminAddrNotSet = errors.New("empty --admin_server, please provide the Admin server host:port")
)
// TODO(Martin2112): Pass everything needed into this and don't refer to flags.
func createTree(ctx context.Context) (*trillian.Tree, error) {
if *adminServerAddr == "" {
return nil, errAdminAddrNotSet
}
req, err := newRequest()
if err != nil {
return nil, err
}
conn, err := grpc.Dial(*adminServerAddr, grpc.WithInsecure())
if err != nil {
return nil, fmt.Errorf("failed to dial %v: %v", *adminServerAddr, err)
}
defer conn.Close()
adminClient := trillian.NewTrillianAdminClient(conn)
mapClient := trillian.NewTrillianMapClient(conn)
logClient := trillian.NewTrillianLogClient(conn)
return client.CreateAndInitTree(ctx, req, adminClient, mapClient, logClient)
}
func newRequest() (*trillian.CreateTreeRequest, error) {
ts, ok := trillian.TreeState_value[*treeState]
if !ok {
return nil, fmt.Errorf("unknown TreeState: %v", *treeState)
}
tt, ok := trillian.TreeType_value[*treeType]
if !ok {
return nil, fmt.Errorf("unknown TreeType: %v", *treeType)
}
hs, ok := trillian.HashStrategy_value[*hashStrategy]
if !ok {
return nil, fmt.Errorf("unknown HashStrategy: %v", *hashStrategy)
}
ha, ok := sigpb.DigitallySigned_HashAlgorithm_value[*hashAlgorithm]
if !ok {
return nil, fmt.Errorf("unknown HashAlgorithm: %v", *hashAlgorithm)
}
sa, ok := sigpb.DigitallySigned_SignatureAlgorithm_value[*signatureAlgorithm]
if !ok {
return nil, fmt.Errorf("unknown SignatureAlgorithm: %v", *signatureAlgorithm)
}
ctr := &trillian.CreateTreeRequest{Tree: &trillian.Tree{
TreeState: trillian.TreeState(ts),
TreeType: trillian.TreeType(tt),
HashStrategy: trillian.HashStrategy(hs),
HashAlgorithm: sigpb.DigitallySigned_HashAlgorithm(ha),
SignatureAlgorithm: sigpb.DigitallySigned_SignatureAlgorithm(sa),
DisplayName: *displayName,
Description: *description,
MaxRootDuration: ptypes.DurationProto(*maxRootDuration),
}}
glog.Infof("Creating tree %+v", ctr.Tree)
if *privateKeyFormat != "" {
pk, err := keys.New(*privateKeyFormat)
if err != nil {
return nil, err
}
ctr.Tree.PrivateKey = pk
} else {
ctr.KeySpec = &keyspb.Specification{}
switch sigpb.DigitallySigned_SignatureAlgorithm(sa) {
case sigpb.DigitallySigned_ECDSA:
ctr.KeySpec.Params = &keyspb.Specification_EcdsaParams{
EcdsaParams: &keyspb.Specification_ECDSA{},
}
case sigpb.DigitallySigned_RSA:
ctr.KeySpec.Params = &keyspb.Specification_RsaParams{
RsaParams: &keyspb.Specification_RSA{},
}
default:
return nil, fmt.Errorf("unsupported signature algorithm: %v", sa)
}
}
return ctr, nil
}
func main() {
flag.Parse()
if *configFile != "" {
if err := cmd.ParseFlagFile(*configFile); err != nil {
glog.Exitf("Failed to load flags from config file %q: %s", *configFile, err)
}
}
ctx, cancel := context.WithTimeout(context.Background(), *rpcDeadline)
defer cancel()
tree, err := createTree(ctx)
if err != nil {
glog.Exitf("Failed to create tree: %v", err)
}
// DO NOT change the output format, scripts are meant to depend on it.
// If you really want to change it, provide an output_format flag and
// keep the default as-is.
fmt.Println(tree.TreeId)
}