17 Commits (main)

Author SHA1 Message Date
Jan Dittberner 51ca9cc69d Refactor public API tests for protocol
- move tests for public API to protocol_test package
- add tests for context handling of COBSFramer
2 years ago
Jan Dittberner 7852c4d3df Add explicit channel direction information
This commit adds explicit input and output channel type information to
make the channel's intent visible to developers.
2 years ago
Jan Dittberner 46407b3685 Implement write canceling in COBSFramer 2 years ago
Jan Dittberner 1374fe58e8 Implement graceful shutdown on interrupt or SIGTERM 2 years ago
Jan Dittberner 37d3b1e021 Update dependencies
This commit updates all external dependencies. The cobs module has a
changed API and code using cobs has been adapted to this new API.
2 years ago
Jan Dittberner 19436c06c2 Implement unit tests for public packages
This commit adds a comprehensive unit test suite for all public packages.
2 years ago
Jan Dittberner af40662c7d Refactor client protocol
- define protocols.ClientHandler interface as base for client implementations
- implement protocols.ClientHandler in clientsim's ClientHandler type
- move protocol state handling into protocols.ServerProtocol and
  protocols.ClientProtocol
- move protocolState type into protocols.go
- reduce clientsim's TestCommandGenerator responsibility to test command
  generation
2 years ago
Jan Dittberner f429d3da45 Refactor server handler
- rename protocols.Handler to ServerHandler
- rename ServerHandler methods to better express their purpose
- pass command and response as parameters
- simplify state machine and handle errors in serial/seriallink.go
- implement command read timeout
- remove currentCommand and currentResponse fields from MsgPackHandler
2 years ago
Jan Dittberner 9905d748d9 Improve signer robustness
- let client simulator send some garbage bytes before starting real commands
- handle EOF during reads
2 years ago
Jan Dittberner e5dcf7afa9 Refactor COBS wire protocol
Wire protocol handling has been moved to protocol.Framer and its
implementation protocol.COBSFramer
2 years ago
Jan Dittberner faaadbe5aa Move internal code to internal packages 2 years ago
Jan Dittberner f0d456dd13 Protocol improvements
- add a client generated command ID for tracing commands and responses
- define protocol delimiter in protocol.CobsDelimiter
- apply code simplifications suggested by golangci-lint
- add Makefile
- add compile time build information for signer binary
- make sure that dependencies for msgpackgen survive go mod tidy
- extract MsgPackHandler into its own file
- add CRL number to fetch CRL response
- remove port.Flush() to avoid removing written data before it reaches the
  client
2 years ago
Jan Dittberner 8e443bd8b4 Implement protocol improvements
This commit implements a client and server side state machine
for the serial protocol.
2 years ago
Jan Dittberner 2de592d30c Implement command type handling
This commit changes the wire protocol to split between command
announcement and command payload to allow proper typing of sent and
received msgpack messages.

CRL fetching has been implemented as second command after the existing
health check command.
2 years ago
Jan Dittberner 472091b374 Switch to logrus for structured logging 2 years ago
Jan Dittberner 60be959c24 Implement health check infrastructure
This commit adds health check capabilities to the hsm.Access and health
response data to the messages returned by the health command.
2 years ago
Jan Dittberner 3107ad8abb Implement serial link and protocol handling infrastructure
This commit adds basic serial link and protocol support. None of the commands
from the docs/design.md document is implemented yet.

The following new packages have been added:

- seriallink containing the serial link handler including COBS decoding and
  encoding
- protocol containing the protocol handler including msgpack unmarshalling
  and marshaling
- health containing a rudimentary health check implementation
- messages containing command and response types and generated msgpack
  marshaling code

A client simulation command has been added in cmd/clientsim.

README.md got instructions how to run the client simulator. The
docs/config.sample.yaml contains a new section for the serial connection
parameters.
2 years ago