// NewSessionState takes the plugin args and returns a SessionState
// returns State or error and returnCode:
// 0 - ok
// 2 - error when unmarshaling pluginArgs
// 3 - cannot open error files
func NewSessionState(pluginArgsMsg string, plugin Plugin, meta *PluginMeta) (*SessionState, error, int) {
pluginArg := &Arg{}
err := json.Unmarshal([]byte(pluginArgsMsg), pluginArg)
if err != nil {
return nil, err, 2
}
// If no port was provided we let the OS select a port for us.
// This is safe as address is returned in the Response and keep
// alive prevents unattended plugins.
if pluginArg.listenPort == "" {
pluginArg.listenPort = "0"
}
// If no PingTimeoutDuration was provided we need to set it
if pluginArg.PingTimeoutDuration == 0 {
pluginArg.PingTimeoutDuration = PingTimeoutDurationDefault
}
// Generate random token for this session
rb := make([]byte, 32)
rand.Read(rb)
rs := base64.URLEncoding.EncodeToString(rb)
logger := &log.Logger{
Out: os.Stderr,
Formatter: &simpleFormatter{},
Hooks: make(log.LevelHooks),
Level: pluginArg.LogLevel,
}
var enc encoding.Encoder
switch meta.RPCType {
case JSONRPC:
enc = encoding.NewJsonEncoder()
case NativeRPC:
enc = encoding.NewGobEncoder()
case GRPC:
enc = encoding.NewGobEncoder()
//TODO(CDR): re-think once content-types is settled
}
ss := &SessionState{
Arg: pluginArg,
Encoder: enc,
plugin: plugin,
token: rs,
killChan: make(chan int),
logger: logger,
}
if !meta.Unsecure {
key, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return nil, err, 2
}
encrypt := encrypter.New(nil, key)
enc.SetEncrypter(encrypt)
ss.Encrypter = encrypt
ss.privateKey = key
}
return ss, nil, 0
}
// NewSessionState takes the plugin args and returns a SessionState
// returns State or error and returnCode:
// 0 - ok
// 2 - error when unmarshaling pluginArgs
// 3 - cannot open error files
func NewSessionState(pluginArgsMsg string, plugin Plugin, meta *PluginMeta) (*SessionState, error, int) {
pluginArg := &Arg{}
err := json.Unmarshal([]byte(pluginArgsMsg), pluginArg)
if err != nil {
return nil, err, 2
}
// If no port was provided we let the OS select a port for us.
// This is safe as address is returned in the Response and keep
// alive prevents unattended plugins.
if pluginArg.listenPort == "" {
pluginArg.listenPort = "0"
}
// If no PingTimeoutDuration was provided we need to set it
if pluginArg.PingTimeoutDuration == 0 {
pluginArg.PingTimeoutDuration = PingTimeoutDurationDefault
}
// Generate random token for this session
rb := make([]byte, 32)
rand.Read(rb)
rs := base64.URLEncoding.EncodeToString(rb)
// Initialize a logger based on PluginLogPath
truncOrAppend := os.O_TRUNC // truncate log file explicitly given by user
// Empty or /tmp means use default tmp log (needs to be removed post-aAtruncOrAppendpha)
if pluginArg.PluginLogPath == "" || pluginArg.PluginLogPath == "/tmp" {
if runtime.GOOS == "windows" {
pluginArg.PluginLogPath = `c:\TEMP\snap_plugin.log`
} else {
pluginArg.PluginLogPath = "/tmp/snap_plugin.log"
}
truncOrAppend = os.O_APPEND
}
lf, err := os.OpenFile(pluginArg.PluginLogPath, os.O_WRONLY|os.O_CREATE|truncOrAppend, 0666)
if err != nil {
return nil, errors.New(fmt.Sprintf("error opening log file: %v", err)), 3
}
logger := log.New(lf, ">>>", log.Ldate|log.Ltime)
var enc encoding.Encoder
switch meta.RPCType {
case JSONRPC:
enc = encoding.NewJsonEncoder()
case NativeRPC:
enc = encoding.NewGobEncoder()
}
ss := &SessionState{
Arg: pluginArg,
Encoder: enc,
plugin: plugin,
token: rs,
killChan: make(chan int),
logger: logger,
}
if !meta.Unsecure {
key, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return nil, err, 2
}
encrypt := encrypter.New(nil, key)
enc.SetEncrypter(encrypt)
ss.Encrypter = encrypt
ss.privateKey = key
}
return ss, nil, 0
}