Updated on 2026-08-14
This commit is contained in:
Tangem
commit
4a2bb5f0bb
14 changed files with 627 additions and 31 deletions
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@ -610,6 +610,10 @@ public class CardProtocol {
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mCard.setRemainingSignatures(readResult.getTagAsInt(TLV.Tag.TAG_RemainingSignatures));
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if (readResult != null && readResult.getTLV(TLV.Tag.TAG_SignedHashes) != null) {
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mCard.setSignHashes(readResult.getTLV(TLV.Tag.TAG_SignedHashes).Value);
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}
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} else {
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mCard.setWallet("N/A");
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}
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163
app/src/main/java/com/tangem/domain/wallet/BalanceValidator.java
Normal file
163
app/src/main/java/com/tangem/domain/wallet/BalanceValidator.java
Normal file
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@ -0,0 +1,163 @@
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package com.tangem.domain.wallet;
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import android.util.Pair;
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public class BalanceValidator {
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private String firstLine;
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private String secondLine;
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private int score;
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public String GetFirstLine()
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{
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return firstLine;
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}
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public String GetSecondLine()
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{
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if(score < 0) score = 0;
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return score + "% safe. " + secondLine;
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}
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public void Check(TangemCard card)
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{
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String defaultFirstLine = "Unknown balance.";
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String successFirstLine = "Verified balance.";
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// rule 1
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if(!CheckOfflineBalance(card) && !CheckOnlineBalance(card)) {
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score = 0;
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secondLine = "Do not accept. Balance cannot be verified.";
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firstLine = defaultFirstLine;
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return;
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}
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// rule 2.a
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if(!VerificationWalletKey(card)) {
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score = 0;
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secondLine = "Do not accept. Wallet verification failed.";
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firstLine = defaultFirstLine;
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return;
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}
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// rule 2.c
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if(!CheckAttestationServiceResult(card)) {
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score = 0;
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secondLine = "Do not accept. Tangem Attestation service says card is not genuine.";
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firstLine = successFirstLine;
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return;
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}
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// rule 3
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if(CheckOnlineBalance(card) && !NotConfirmTransaction(card))
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{
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if(card.isBalanceRecieved() && card.isBalanceEqual()) {
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score = 100;
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firstLine = "Verified balance.";
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secondLine += " Confirmed balance and banknote identity.";
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}
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if(card.getFailedBalanceRequestCounter()!=0) {
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score = 100 - 10 * card.getFailedBalanceRequestCounter();
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firstLine = "Verified balance.";
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secondLine += " Not all nodes have returned balance. App is requesting more nodes to be 100% sure...";
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if(score <= 0)
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return;
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}
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if(card.isBalanceRecieved() && !card.isBalanceEqual()) {
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score = 0;
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firstLine = "Disputed balance.";
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secondLine += " Cannot obtaine trusted balance at the moment. Try to tap and check this banknote later.";
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return;
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}
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}
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// rule 7
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if(CheckOfflineBalance(card) && !CheckOnlineBalance(card))
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{
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score = -10;
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String firstLine = "Virified offline balance.";
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secondLine += " Restore internet connection to be more confidient.";
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if(score <= 0)
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return;
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}
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// rule 2.b
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if(!CheckAttestationServiceAvailable(card))
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{
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score = -15;
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secondLine += "Card identity was not verified. Cannot reach attestation service.";
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firstLine = successFirstLine;
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if(score <= 0)
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return;
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}
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// rule 5
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if(IsLostSecondRead(card))
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{
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score = -30;
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secondLine += " Wallet and banknote keys were not verified (tap again).";
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if(score <= 0)
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return;
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}
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// rule 4
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if(!CheckSignHashes(card))
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{
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score = -50;
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secondLine = "Unguaranteed balance.";
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firstLine += " Potential unsent transaction at the moment. Try to tap and check this banknote later.";
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if(score <= 0)
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return;
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}
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// rule 6
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if(NotConfirmTransaction(card))
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{
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score = -50;
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String firstLine = "Unguaranted balance.";
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secondLine = " Loading in progress. Wait for full confirmation in blockchain.";
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if(score <= 0)
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return;
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}
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}
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boolean CheckOfflineBalance(TangemCard card)
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{
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return card.getOfflineBalance() != null;
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}
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boolean CheckOnlineBalance(TangemCard card)
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{
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return card.isBalanceRecieved();
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}
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boolean VerificationWalletKey(TangemCard card)
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{
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return card.isWalletPublicKeyValid();
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}
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boolean CheckSignHashes(TangemCard card)
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{
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return card.getSignHashes()==null;
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}
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boolean CheckAttestationServiceAvailable(TangemCard card)
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{
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return card.isOnlineVerified() != null;
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}
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boolean CheckAttestationServiceResult(TangemCard card)
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{
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return card.isOnlineVerified() != null && card.isOnlineVerified() == true;
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}
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boolean NotConfirmTransaction(TangemCard card)
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{
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return card.getBalanceUnconfirmed()!=0;
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}
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boolean IsLostSecondRead(TangemCard card)
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{
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return card.isCodeConfirmed() != null;
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}
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}
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@ -117,4 +117,14 @@ public enum Issuer {
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return Issuer.Unknown;
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}
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public static Issuer FindIssuer(String ID) {
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Issuer[] issuers = Issuer.values();
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for (int i = 1; i < issuers.length; i++) {
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if (issuers[i].ID.equals(ID)) {
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return issuers[i];
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}
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}
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return Issuer.Unknown;
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}
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}
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@ -1,5 +1,6 @@
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package com.tangem.domain.wallet;
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import java.math.BigDecimal;
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import java.util.concurrent.atomic.AtomicInteger;
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/**
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@ -14,8 +15,32 @@ public class SharedData
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public int allRequest;
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public AtomicInteger errorRequest;
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public BigDecimal payload;
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public synchronized boolean UpdatePayload(BigDecimal value)
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{
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if(payload == null || payload.compareTo(value)!=0)
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{
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boolean isChange = true;
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if(payload == null)
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isChange = false;
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if(value!=BigDecimal.ZERO)
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payload = value;
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return isChange;
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}
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return false;
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}
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public void SetErrorRequest(int val)
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{
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errorRequest = new AtomicInteger(val);
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}
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public SharedData(int requstCount)
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{
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payload = BigDecimal.ZERO;
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allRequest = requstCount;
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errorRequest = new AtomicInteger(0);
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requestCounter = new AtomicInteger(0);
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@ -11,10 +11,10 @@ import com.tangem.wallet.R;
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import java.math.BigInteger;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.List;
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import java.util.concurrent.atomic.AtomicInteger;
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/**
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* Created by dvol on 16.07.2017.
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@ -270,6 +270,42 @@ public class TangemCard {
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}
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}
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private Boolean codeConfirmed;
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public void setCodeConfirmed(Boolean codeConfirmed) {
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this.codeConfirmed = codeConfirmed;
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}
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public Boolean isCodeConfirmed() {
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return codeConfirmed;
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}
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private Boolean onlineVerified;
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public void setOnlineVerified(Boolean verified) {
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this.onlineVerified = verified;
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}
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public Boolean isOnlineVerified() {
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return onlineVerified;
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}
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private Boolean onlineValidated;
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public void setOnlineValidated(Boolean validated) {
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this.onlineValidated = validated;
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}
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public Boolean isOnlineValidated() {
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return onlineValidated;
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}
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private boolean balanceRecieved = false;
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public boolean isBalanceRecieved() {
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return balanceRecieved;
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}
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public void setBalanceRecieved(boolean balanceRecieved)
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{
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this.balanceRecieved = balanceRecieved;
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}
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public int getRemainingSignatures() {
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return remainingSignatures;
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}
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@ -666,6 +702,31 @@ public class TangemCard {
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return pauseBeforePIN2;
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}
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private AtomicInteger failedBalanceRequestCounter;
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public int incFailedBalanceRequestCounter()
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{
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if(failedBalanceRequestCounter == null)
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failedBalanceRequestCounter = new AtomicInteger(0);
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return failedBalanceRequestCounter.incrementAndGet();
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}
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public void resetFailedBalanceRequestCounter()
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{
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failedBalanceRequestCounter = new AtomicInteger(0);
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}
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public int getFailedBalanceRequestCounter()
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{
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if(failedBalanceRequestCounter == null)
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return 0;
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return failedBalanceRequestCounter.get();
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}
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Boolean balanceEqual;
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public Boolean isBalanceEqual(){return balanceEqual;}
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public void setIsBalanceEqual(boolean isEqual)
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{
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balanceEqual = isEqual;
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}
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private Integer settingsMask = null;
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public void setSettingsMask(int settingsMask) {
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@ -1135,6 +1196,16 @@ public class TangemCard {
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return Denomination;
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}
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public byte[] SignHashes;
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public void setSignHashes(byte[] SignHashes) {
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this.SignHashes = SignHashes;
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}
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public byte[] getSignHashes() {
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return SignHashes;
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}
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public void clearDenomination() {
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Denomination = null;
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}
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@ -1205,12 +1276,16 @@ public class TangemCard {
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if (encryptionMode != null) B.putString("EncryptionMode", encryptionMode.name());
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if (issuer != null) B.putString("Issuer", issuer.name());
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if (firmwareVersion != null) B.putString("FirmwareVersion", firmwareVersion);
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if(balanceEqual != null) B.putBoolean("isBalanceEqual", balanceEqual);
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B.putString("BalanceDecimal", balanceDecimal);
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B.putString("BalanceDecimalAlter", balanceDecimalAlter);
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B.putBoolean("ManufacturerConfirmed", manufacturerConfirmed);
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B.putBoolean("CardPublicKeyValid", isCardPublicKeyValid());
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B.putByteArray("CardPublicKey", getCardPublicKey());
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if(failedBalanceRequestCounter != null)
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B.putInt("FailedBalance", failedBalanceRequestCounter.get());
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if(getSignHashes()!=null) B.putByteArray("SignHashes", getSignHashes());
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B.putString("Wallet", wallet);
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B.putString("Error", error);
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B.putBoolean("WalletPublicKeyValid", isWalletPublicKeyValid());
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@ -1255,6 +1330,22 @@ public class TangemCard {
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B.putFloat("rate", rate);
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B.putFloat("rateAlter", rateAlter);
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B.putString("confirmTx", GetConfirmTXCount().toString(16));
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if( codeConfirmed!=null )
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B.putBoolean("codeConfirmed", codeConfirmed);
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if( codeConfirmed!=null )
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B.putBoolean("codeConfirmed", codeConfirmed);
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if( onlineVerified!=null )
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B.putBoolean("onlineVerified", onlineVerified);
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B.putBoolean("balanceRecieved", balanceRecieved);
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if( onlineValidated!=null )
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B.putBoolean("onlineValidated", onlineValidated);
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}
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public void LoadFromBundle(Bundle B) {
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@ -1292,12 +1383,17 @@ public class TangemCard {
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else
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encryptionMode = null;
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if (B.containsKey("Issuer")) issuer = Issuer.valueOf(B.getString("Issuer"));
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if(B.containsKey("SignHashes")) setSignHashes(B.getByteArray("SignHashes"));
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if(B.containsKey("FailedBalance")) failedBalanceRequestCounter = new AtomicInteger(B.getInt("FailedBalance"));
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if (B.containsKey("Issuer")) issuer = Issuer.FindIssuer(B.getString("Issuer"));
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if (B.containsKey("FirmwareVersion")) firmwareVersion = B.getString("FirmwareVersion");
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if(B.containsKey("isBalanceEqual")) setIsBalanceEqual(B.getBoolean("isBalanceEqual"));
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cardPublicKeyValid = B.getBoolean("CardPublicKeyValid");
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if (B.containsKey("CardPublicKey")) setCardPublicKey(B.getByteArray("CardPublicKey"));
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if(B.containsKey("balanceRecieved")) setBalanceRecieved(B.getBoolean("balanceRecieved"));
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if (B.containsKey("BalanceConfirmed")) balanceConfirmed = B.getLong("BalanceConfirmed");
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else balanceConfirmed = null;
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if (B.containsKey("BalanceUnconfirmed"))
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@ -1364,40 +1460,27 @@ public class TangemCard {
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rateAlter = B.getFloat("rateAlter");
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if (B.containsKey("confirmTx"))
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countConfirmTX = new BigInteger(B.getString("confirmTx"), 16);
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}
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private final static char[] hexArray = "0123456789ABCDEF".toCharArray();
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public static String bytesToHex(byte[] bytes) {
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if (bytes == null) return "";
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char[] hexChars = new char[bytes.length * 2];
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for ( int j = 0; j < bytes.length; j++ ) {
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int v = bytes[j] & 0xFF;
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hexChars[j * 2] = hexArray[v >>> 4];
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hexChars[j * 2 + 1] = hexArray[v & 0x0F];
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}
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return new String(hexChars);
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if( B.containsKey("codeConfirmed") )
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codeConfirmed=B.getBoolean("codeConfirmed");
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if( B.containsKey("onlineVerified") )
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onlineVerified=B.getBoolean("onlineVerified");
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if( B.containsKey("onlineValidated") )
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onlineValidated=B.getBoolean("onlineValidated");
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}
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public int getCardImageResource() {
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switch (getBlockchainID()) {
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case "BTC":
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if ( bytesToHex(getDenomination()).equals("40420F0000000000") )
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return R.drawable.card_btc001;
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else if (bytesToHex(getDenomination()).equals("404B4C0000000000") )
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return R.drawable.card_btc005;
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else if (bytesToHex(getDenomination()).equals("0000000000000000") )
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return R.drawable.card_btc_hk_s;
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else
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return R.drawable.card_default;
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return R.drawable.card_btc001;
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case "Token":
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if (getTokenSymbol().equals("SEED"))
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return R.drawable.card_seed;
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else
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return R.drawable.card_default;
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case "ETH\\XTZ":
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return R.drawable.card_seed;
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default:
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return R.drawable.card_default;
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return R.drawable.card_btc001;
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}
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}
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