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//
// Copyright (c) SAS Institute Inc.
//
// 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 worker
import (
"bytes"
"context"
"crypto"
"crypto/rsa"
"crypto/x509"
"encoding/json"
"io"
"net/http"
"net/url"
"time"
"github.com/sassoftware/relic/v7/config"
"github.com/sassoftware/relic/v7/internal/workerrpc"
"github.com/sassoftware/relic/v7/token"
)
const (
defaultRetries = 5
defaultTimeout = 60 * time.Second
tokenType = "worker"
)
func (t *WorkerToken) request(ctx context.Context, path string, rr workerrpc.Request) (*workerrpc.Response, error) {
req := &http.Request{
Method: http.MethodPost,
URL: &url.URL{Scheme: "http", Host: t.addr, Path: path},
Header: http.Header{"Auth-Cookie": []string{t.cookie}},
}
blob, err := json.Marshal(rr)
if err != nil {
return nil, err
}
req.GetBody = func() (io.ReadCloser, error) {
return io.NopCloser(bytes.NewReader(blob)), nil
}
return t.doRetry(req.WithContext(ctx))
}
func (t *WorkerToken) Ping(ctx context.Context) error {
_, err := t.request(ctx, workerrpc.Ping, workerrpc.Request{})
return err
}
func (t *WorkerToken) Config() *config.TokenConfig {
return t.tconf
}
func (t *WorkerToken) GetKey(ctx context.Context, keyName string) (token.Key, error) {
kconf, err := t.config.GetKey(keyName)
if err != nil {
return nil, err
}
res, err := t.request(ctx, workerrpc.GetKey, workerrpc.Request{KeyName: kconf.Name()})
if err != nil {
return nil, err
}
pub, err := x509.ParsePKIXPublicKey(res.Value)
if err != nil {
return nil, err
}
return &workerKey{
token: t,
kconf: kconf,
public: pub,
id: res.ID,
cert: res.Cert,
}, nil
}
func (t *WorkerToken) Import(keyName string, privKey crypto.PrivateKey) (token.Key, error) {
return nil, token.NotImplementedError{Op: "import-key", Type: tokenType}
}
func (t *WorkerToken) ImportCertificate(cert *x509.Certificate, labelBase string) error {
return token.NotImplementedError{Op: "import-certificate", Type: tokenType}
}
func (t *WorkerToken) Generate(keyName string, keyType token.KeyType, bits uint) (token.Key, error) {
return nil, token.NotImplementedError{Op: "generate-key", Type: tokenType}
}
func (t *WorkerToken) ListKeys(opts token.ListOptions) error {
return token.NotImplementedError{Op: "list-keys", Type: tokenType}
}
type workerKey struct {
token *WorkerToken
kconf *config.KeyConfig
public crypto.PublicKey
id []byte
cert []byte
}
func (k *workerKey) Config() *config.KeyConfig {
return k.kconf
}
func (k *workerKey) Certificate() []byte {
return k.cert
}
func (k *workerKey) Public() crypto.PublicKey {
return k.public
}
func (k *workerKey) GetID() []byte {
return k.id
}
func (k *workerKey) Sign(rand io.Reader, digest []byte, opts crypto.SignerOpts) ([]byte, error) {
return k.SignContext(context.Background(), digest, opts)
}
func (k *workerKey) SignContext(ctx context.Context, digest []byte, opts crypto.SignerOpts) ([]byte, error) {
rr := workerrpc.Request{
KeyName: k.kconf.Name(),
KeyID: k.id,
Digest: digest,
}
if opts != nil {
rr.Hash = uint(opts.HashFunc())
if o, ok := opts.(*rsa.PSSOptions); ok {
rr.SaltLength = &o.SaltLength
}
}
res, err := k.token.request(ctx, workerrpc.Sign, rr)
if err != nil {
return nil, err
}
return res.Value, nil
}
func (k *workerKey) ImportCertificate(cert *x509.Certificate) error {
return token.NotImplementedError{Op: "import-certificate", Type: tokenType}
}
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