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Avoid panic due to interface conversion without check #457

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9 changes: 8 additions & 1 deletion ios/tunnel/untrusted.go
Original file line number Diff line number Diff line change
Expand Up @@ -144,7 +144,14 @@ func (t *tunnelService) createTunnelListener() (tunnelListener, error) {
return tunnelListener{}, err
}
port := createListener["port"].(float64)
devPublicKey := createListener["devicePublicKey"].(string)
devPublicKeyRaw, found := createListener["devicePublicKey"]
if !found {
return tunnelListener{}, fmt.Errorf("no public key found")
}
devPublicKey, isString := devPublicKeyRaw.(string)
if !isString {
return tunnelListener{}, fmt.Errorf("public key is not a string")
}
devPK, err := base64.StdEncoding.DecodeString(devPublicKey)
if err != nil {
return tunnelListener{}, err
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