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137 lines
3.5 KiB
Go
137 lines
3.5 KiB
Go
/*
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Copyright 2022 CAcert Inc.
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SPDX-License-Identifier: Apache-2.0
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package handler
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import (
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"fmt"
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"time"
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"github.com/shamaton/msgpackgen/msgpack"
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"github.com/sirupsen/logrus"
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"git.cacert.org/cacert-gosigner/pkg/messages"
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"git.cacert.org/cacert-gosigner/pkg/protocol"
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"git.cacert.org/cacert-gosignerclient/internal/config"
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)
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type SignerClientHandler struct {
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logger *logrus.Logger
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commands chan *protocol.Command
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config *config.ClientConfig
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}
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func (s *SignerClientHandler) Send(command *protocol.Command, out chan []byte) error {
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var (
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frame []byte
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err error
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)
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frame, err = msgpack.Marshal(command.Announce)
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if err != nil {
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return fmt.Errorf("could not marshal command annoucement: %w", err)
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}
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s.logger.WithField("announcement", command.Announce).Info("write command announcement")
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s.logger.Trace("writing command announcement")
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out <- frame
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frame, err = msgpack.Marshal(command.Command)
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if err != nil {
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return fmt.Errorf("could not marshal command data: %w", err)
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}
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s.logger.WithField("command", command.Command).Info("write command data")
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out <- frame
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return nil
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}
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func (s *SignerClientHandler) ResponseAnnounce(in chan []byte) (*protocol.Response, error) {
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response := &protocol.Response{}
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var announce messages.ResponseAnnounce
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select {
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case frame := <-in:
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if err := msgpack.Unmarshal(frame, &announce); err != nil {
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return nil, fmt.Errorf("could not unmarshal response announcement: %w", err)
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}
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response.Announce = &announce
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s.logger.WithField("announcement", response.Announce).Debug("received response announcement")
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return response, nil
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case <-time.After(s.config.ResponseAnnounceTimeout):
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return nil, protocol.ErrResponseAnnounceTimeoutExpired
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}
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}
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func (s *SignerClientHandler) ResponseData(in chan []byte, response *protocol.Response) error {
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select {
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case frame := <-in:
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switch response.Announce.Code {
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case messages.RespHealth:
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var resp messages.HealthResponse
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if err := msgpack.Unmarshal(frame, &resp); err != nil {
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return fmt.Errorf("could not unmarshal health response data: %w", err)
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}
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response.Response = &resp
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case messages.RespFetchCRL:
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var resp messages.FetchCRLResponse
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if err := msgpack.Unmarshal(frame, &resp); err != nil {
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return fmt.Errorf("could not unmarshal fetch CRL response data: %w", err)
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}
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response.Response = &resp
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default:
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return fmt.Errorf("unhandled response code %s", response.Announce.Code)
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}
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case <-time.After(s.config.ResponseDataTimeout):
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return protocol.ErrResponseDataTimeoutExpired
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}
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return nil
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}
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func (s *SignerClientHandler) HandleResponse(response *protocol.Response) error {
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s.logger.WithField("response", response.Announce).Info("handled response")
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s.logger.WithField("response", response).Debug("full response")
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// TODO: add real implementations
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return nil
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}
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func New(
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config *config.ClientConfig,
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logger *logrus.Logger,
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commands chan *protocol.Command,
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) (protocol.ClientHandler, error) {
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return &SignerClientHandler{
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logger: logger,
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config: config,
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commands: commands,
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}, nil
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}
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