goldwarden-vaultwarden-bitw.../browserbiometrics/protocol.go

137 lines
3.4 KiB
Go

package browserbiometrics
import (
"bufio"
"encoding/json"
"io"
"os"
"github.com/quexten/goldwarden/browserbiometrics/logging"
"github.com/quexten/goldwarden/client"
"github.com/quexten/goldwarden/ipc"
)
func readLoop() {
v := bufio.NewReader(os.Stdin)
s := bufio.NewReaderSize(v, bufferSize)
lengthBytes := make([]byte, 4)
lengthNum := int(0)
send(SendMessage{
Command: "connected",
AppID: appID,
})
for b, err := s.Read(lengthBytes); b > 0 && err == nil; b, err = s.Read(lengthBytes) {
lengthNum = readMessageLength(lengthBytes)
content := make([]byte, lengthNum)
_, err := s.Read(content)
if err != nil && err != io.EOF {
logging.Panicf(err.Error())
}
parseMessage(content)
}
}
func parseMessage(msg []byte) {
logging.Debugf("Received message: " + string(msg))
var genericMessage GenericRecvMessage
err := json.Unmarshal(msg, &genericMessage)
if err != nil {
logging.Panicf("Unable to unmarshal json to struct: " + err.Error())
}
if _, ok := (genericMessage.Message.(map[string]interface{})["command"]); ok {
logging.Debugf("Message is unencrypted")
var unmsg UnencryptedRecvMessage
err := json.Unmarshal(msg, &unmsg)
if err != nil {
logging.Panicf("Unable to unmarshal json to struct: " + err.Error())
}
handleUnencryptedMessage(unmsg)
} else {
logging.Debugf("Message is encrypted")
var encmsg EncryptedRecvMessage
err := json.Unmarshal(msg, &encmsg)
if err != nil {
logging.Panicf("Unable to unmarshal json to struct: " + err.Error())
}
decryptedMessage := decryptStringSymmetric(transportKey, encmsg.Message.IV, encmsg.Message.Data)
var payloadMsg PayloadMessage
err = json.Unmarshal([]byte(decryptedMessage), &payloadMsg)
if err != nil {
logging.Panicf("Unable to unmarshal json to struct: " + err.Error())
}
handlePayloadMessage(payloadMsg, genericMessage.AppID)
}
}
func handleUnencryptedMessage(msg UnencryptedRecvMessage) {
logging.Debugf("Received unencrypted message: %+v", msg.Message)
logging.Debugf(" with command: %s", msg.Message.Command)
switch msg.Message.Command {
case "setupEncryption":
sharedSecret, err := rsaEncrypt(msg.Message.PublicKey, transportKey)
if err != nil {
logging.Panicf(err.Error())
}
send(SendMessage{
Command: "setupEncryption",
AppID: msg.AppID,
SharedSecret: sharedSecret,
})
break
}
}
func handlePayloadMessage(msg PayloadMessage, appID string) {
logging.Debugf("Received unencrypted message: %+v", msg)
switch msg.Command {
case "biometricUnlock":
logging.Debugf("Biometric unlock requested")
// logging.Debugf("Biometrics authorized: %t", isAuthorized)
result, err := client.NewUnixSocketClient().SendToAgent(ipc.GetBiometricsKeyRequest{})
if err != nil {
logging.Errorf("Unable to send message to agent: %s", err.Error())
return
}
switch result.(type) {
case ipc.GetBiometricsKeyResponse:
if err != nil {
logging.Panicf(err.Error())
}
var key = result.(ipc.GetBiometricsKeyResponse).Key
var payloadMsg ReceiveMessage = ReceiveMessage{
Command: "biometricUnlock",
Response: "unlocked",
Timestamp: msg.Timestamp,
KeyB64: key,
}
payloadStr, err := json.Marshal(payloadMsg)
if err != nil {
logging.Panicf(err.Error())
}
logging.Debugf("Payload: %s", payloadStr)
encStr := encryptStringSymmetric(transportKey, payloadStr)
send(SendMessage{
AppID: appID,
Message: encStr,
})
break
}
break
}
}