checkWeightFix.java

public static long checkWeight(Permission permission, List<ByteString> sigs, byte[] hash,
      List<ByteString> approveList)
      throws SignatureException, PermissionException, SignatureFormatException {
    long currentWeight = 0;
    if (sigs.size() > permission.getKeysCount()) {
      throw new PermissionException(
          "Signature count is " + (sigs.size()) + " more than key counts of permission : "
              + permission.getKeysCount());
    }
    HashMap addMap = new HashMap();
    for (ByteString sig : sigs) {
      if (sig.size() < 65) {
        throw new SignatureFormatException(
            "Signature size is " + sig.size());
      }
      String base64 = TransactionCapsule.getBase64FromByteString(sig);
      byte[] address = SignUtils
          .signatureToAddress(hash, base64, CommonParameter.getInstance().isECKeyCryptoEngine());
      long weight = getWeight(permission, address);
      if (weight == 0) {
        throw new PermissionException(
            ByteArray.toHexString(sig.toByteArray()) + " is signed by " + encode58Check(address)
                + " but it is not contained of permission.");
      }
      if (ForkController.instance().pass(Parameter.ForkBlockVersionEnum.VERSION_4_7_1)) {
        base64 = encode58Check(address);
      }
      if (addMap.containsKey(base64)) {
        throw new PermissionException(encode58Check(address) + " has signed twice!");
      }
      addMap.put(base64, weight);
      if (approveList != null) {
        approveList.add(ByteString.copyFrom(address)); //out put approve list.
      }
      currentWeight += weight;
    }
    return currentWeight;
  }