func sendAuthResult(
cmd *ClientCmd,
context *helpers.ConnectionContext,
option HandlerParamsReader) (*ServerCmd, error) {
// Check client hash
serverKey := context.GetTmpData()
var err error
var result *ServerCmd
if len(serverKey) == option.GetDefaultKeySize() {
requestData := (*cmd).Data
if len(requestData) > 0 {
if clientParts := strings.Split(requestData, ":"); len(clientParts) == 2 {
// clientParts[0] - hash from client clientParts[1] - client "salt"
line := fmt.Sprintf(
"%s%s%s",
// main key
option.GetSecretKey(),
// client key
clientParts[1],
// server key
serverKey)
if hashMethod(line, option) == clientParts[0] {
rand := helpers.NewSystemRandom()
keySize, node := option.GetCidConstructorData()
contextData := ContextNewData{auth: true}
// offer new cid
answer := ServerCmd{
contextUpdater: &contextData,
baseCmd: baseCmd{Cid: rand.CreateCid(keySize, node), Target: CmdClientData}}
result = &answer
} else {
err = errors.New("Auth failed!")
}
} else {
err = errors.New("Client data format error.")
}
} else {
err = errors.New("Client data not found.")
}
} else {
// incorrect
err = errors.New("Connection without auth request?")
}
return result, err
}
