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-rw-r--r--client/add-entry/main.go150
-rw-r--r--client/client.go139
2 files changed, 289 insertions, 0 deletions
diff --git a/client/add-entry/main.go b/client/add-entry/main.go
new file mode 100644
index 0000000..693aca8
--- /dev/null
+++ b/client/add-entry/main.go
@@ -0,0 +1,150 @@
+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
+}
diff --git a/client/client.go b/client/client.go
new file mode 100644
index 0000000..e1663a0
--- /dev/null
+++ b/client/client.go
@@ -0,0 +1,139 @@
+package client
+
+import (
+ "bytes"
+ "context"
+ "fmt"
+
+ "crypto/ed25519"
+ "crypto/tls"
+ "crypto/x509"
+ "encoding/base64"
+ "encoding/json"
+ "io/ioutil"
+ "net/http"
+
+ "github.com/golang/glog"
+ "github.com/system-transparency/stfe"
+ "github.com/system-transparency/stfe/server/descriptor"
+ "golang.org/x/net/context/ctxhttp"
+)
+
+type Client struct {
+ Log *descriptor.Log
+ Client *http.Client
+ Chain []*x509.Certificate
+ PrivateKey *ed25519.PrivateKey
+}
+
+// NewClient returns a new log client
+func NewClient(log *descriptor.Log, client *http.Client, chain []*x509.Certificate, privateKey *ed25519.PrivateKey) *Client {
+ return &Client{
+ Log: log,
+ Chain: chain,
+ Client: client,
+ PrivateKey: privateKey,
+ }
+}
+
+func (c *Client) AddEntry(ctx context.Context, name, checksum []byte) (*stfe.StItem, error) {
+ glog.V(3).Info("creating add-entry request")
+ leaf, err := stfe.NewChecksumV1(name, checksum).Marshal()
+ if err != nil {
+ return nil, fmt.Errorf("failed marshaling StItem: %v", err)
+ }
+ data, err := json.Marshal(struct {
+ Item string `json:"item"`
+ Scheme uint16 `json:"signature_scheme"`
+ Signature string `json:"signature"`
+ Chain []string `json:"chain"`
+ }{
+ Item: base64.StdEncoding.EncodeToString(leaf),
+ Scheme: uint16(tls.Ed25519),
+ Signature: base64.StdEncoding.EncodeToString(ed25519.Sign(*c.PrivateKey, serialized)),
+ Chain: c.b64Chain(),
+ })
+ if err != nil {
+ return nil, fmt.Errorf("failed creating post data: %v", err)
+ }
+ // TODO: make http(s) config option
+ req, err := http.NewRequest("POST", "http://"+c.Log.BaseUrl+"/add-entry", bytes.NewBuffer(data))
+ if err != nil {
+ return nil, fmt.Errorf("failed creating http request: %v", err)
+ }
+ req.Header.Set("Content-Type", "application/json")
+
+ var itemStr string
+ if err := c.doRequest(ctx, req, &itemStr); err != nil {
+ return nil, err
+ }
+ b, err := base64.StdEncoding.DecodeString(itemStr)
+ if err != nil {
+ return nil, fmt.Errorf("failed decoding base64 body: %v", err)
+ }
+ var item stfe.StItem
+ if err := item.Unmarshal(b); err != nil {
+ return nil, fmt.Errorf("failed decoding StItem: %v", err)
+ }
+
+ if item.Format != stfe.StFormatSignedDebugInfoV1 {
+ return nil, fmt.Errorf("bad StItem format: %v", item.Format)
+ }
+ if err := item.SignedDebugInfoV1.Verify(c.Log.Scheme, c.Log.PublicKey, serialized); err != nil {
+ return nil, fmt.Errorf("bad SignedDebugInfoV1 signature: %v", err)
+ }
+ return &item, nil
+}
+
+func (c *Client) doRequest(ctx context.Context, req *http.Request, out interface{}) error {
+ glog.V(3).Infof("sending request: %v %v", req.Method, req.URL)
+ rsp, err := ctxhttp.Do(ctx, c.Client, req)
+ if err != nil {
+ return fmt.Errorf("http request failed: %v", err)
+ }
+ body, err := ioutil.ReadAll(rsp.Body)
+ rsp.Body.Close()
+ if err != nil {
+ return fmt.Errorf("http body read failed: %v", err)
+ }
+ if rsp.StatusCode != http.StatusOK {
+ return fmt.Errorf("http status code not ok: %v", rsp.StatusCode)
+ }
+ if err := json.Unmarshal(body, out); err != nil {
+ return fmt.Errorf("failed decoding json body: %v", err)
+ }
+ return nil
+}
+
+func (c *Client) GetSth(ctx context.Context) (*stfe.StItem, error) {
+ glog.V(2).Info("creating get-sth request")
+ return nil, fmt.Errorf("TODO")
+}
+
+func (c *Client) GetConsistencyProof(ctx context.Context, first, second uint64) (*stfe.StItem, error) {
+ glog.V(2).Info("creating get-consistency-proof request")
+ return nil, fmt.Errorf("TODO")
+}
+
+func (c *Client) GetProofByHash(ctx context.Context, treeSize uint64, hash []byte) (*stfe.StItem, error) {
+ glog.V(2).Info("creating get-proof-by-hash request")
+ return nil, fmt.Errorf("TODO")
+}
+
+func (c *Client) GetEntries(ctx context.Context, start, end uint64) (*stfe.StItem, error) {
+ glog.V(2).Info("creating get-entries request")
+ return nil, fmt.Errorf("TODO")
+}
+
+func (c *Client) GetAnchors(ctx context.Context, start, end uint64) ([]*x509.Certificate, error) {
+ glog.V(2).Info("creating get-anchors request")
+ return nil, fmt.Errorf("TODO")
+}
+
+func (c *Client) b64Chain() []string {
+ chain := make([]string, 0, len(c.Chain))
+ for _, cert := range c.Chain {
+ chain = append(chain, base64.StdEncoding.EncodeToString(cert.Raw))
+ }
+ return chain
+}