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package main
import (
"context"
"flag"
"fmt"
"crypto/ed25519"
"crypto/x509"
"encoding/base64"
"encoding/json"
"encoding/pem"
"io/ioutil"
"net/http"
"github.com/golang/glog"
"github.com/system-transparency/stfe/client"
"github.com/system-transparency/stfe/server/descriptor"
)
var (
operators = flag.String("operators", "../../server/descriptor/stfe.json", "path to json-encoded list of log operators")
logId = flag.String("log_id", "B9oCJk4XIOMXba8dBM5yUj+NLtqTE6xHwbvR9dYkHPM=", "base64-encoded log identifier")
chain = flag.String("chain", "../../server/testdata/chain/ee.pem", "path to pem-encoded certificate chain that the log accepts")
key = flag.String("key", "../../server/testdata/chain/ee.key", "path to ed25519 private key that corresponds to the chain's end-entity certificate")
name = flag.String("name", "foobar-1.2.3", "package name")
checksum = flag.String("checksum", "50e7967bce266a506f8f614bb5096beba580d205046b918f47d23b2ec626d75e", "base64-encoded package checksum")
)
func main() {
flag.Parse()
client, err := setup()
if err != nil {
glog.Fatal(err)
}
pname, psum, err := params()
if err != nil {
glog.Fatal(err)
}
sdi, err := client.AddEntry(context.Background(), pname, psum)
if err != nil {
glog.Fatalf("add-entry failed: %v", err)
}
glog.Infof("got valid StItem: %v", sdi)
glog.Flush()
}
func params() ([]byte, []byte, error) {
b, err := base64.StdEncoding.DecodeString(*checksum)
if err != nil {
return nil, nil, fmt.Errorf("failed decoding checksum: %v", err)
}
return []byte(*name), b, nil
}
func setup() (*client.Client, error) {
blob, err := ioutil.ReadFile(*chain)
if err != nil {
return nil, fmt.Errorf("failed reading certificate chain: %v", err)
}
c, err := parseChain(blob)
if err != nil {
return nil, fmt.Errorf("failed loading certificate chain: %v", err)
}
blob, err = ioutil.ReadFile(*key)
if err != nil {
return nil, fmt.Errorf("failed reading ed25519 private key: %v", err)
}
k, err := parseEd25519PrivateKey(blob)
if err != nil {
return nil, fmt.Errorf("failed decoding ed25519 private key: %v", err)
}
blob, err = ioutil.ReadFile(*operators)
if err != nil {
return nil, fmt.Errorf("failed reading log operators: %v", err)
}
var ops []descriptor.Operator
if err := json.Unmarshal(blob, &ops); err != nil {
return nil, fmt.Errorf("failed decoding log operators: %v", err)
}
id, err := base64.StdEncoding.DecodeString(*logId)
if err != nil {
return nil, fmt.Errorf("failed decoding log identifier: %v", err)
}
// TODO: define FindLog() for []Operator
var log *descriptor.Log
for _, op := range ops {
l, err := op.FindLog(id)
if err == nil {
log = l
break
}
}
if log == nil {
return nil, fmt.Errorf("unknown log identifier: %v", err)
}
return client.NewClient(log, &http.Client{}, c, &k), nil
}
func parseEd25519PrivateKey(data []byte) (ed25519.PrivateKey, error) {
block, rest := pem.Decode(data)
if block == nil {
return nil, fmt.Errorf("pem block: is empty")
}
if block.Type != "PRIVATE KEY" {
return nil, fmt.Errorf("bad pem block type: %v", block.Type)
}
if len(rest) != 0 {
return nil, fmt.Errorf("pem block: trailing data")
}
key, err := x509.ParsePKCS8PrivateKey(block.Bytes)
if err != nil {
fmt.Errorf("x509 parser failed: %v", err)
}
switch t := key.(type) {
case ed25519.PrivateKey:
return key.(ed25519.PrivateKey), nil
default:
return nil, fmt.Errorf("unexpected signing key type: %v", t)
}
}
func parseChain(rest []byte) ([]*x509.Certificate, error) {
var chain []*x509.Certificate
for len(rest) > 0 {
var block *pem.Block
block, rest = pem.Decode(rest)
if block == nil {
break
}
if block.Type != "CERTIFICATE" {
return nil, fmt.Errorf("unexpected pem block type: %v", block.Type)
}
certificate, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, fmt.Errorf("failed parsing x509 certificate: %v", err)
}
chain = append(chain, certificate)
}
return chain, nil
}
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