GiftedHacker/tangem-app-android-audited
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Updated on 2026-08-14

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This commit is contained in:
Tangem 2018-07-17 17:21:56 +03:00
commit aad7f48601
5 changed files with 44 additions and 55 deletions
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53
app/src/main/java/com/tangem/domain/wallet/BalanceValidator.java
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@ -1,5 +1,7 @@
package com.tangem.domain.wallet;
import com.tangem.wallet.R;
public class BalanceValidator {
private String firstLine;
private String secondLine;
@ -17,36 +19,39 @@ public class BalanceValidator {
return score + "% safe. " + secondLine;
}
}
public int GetColor() {
if (score>89) { return R.color.msg_okay;}
else if (score>74) { return android.R.color.holo_orange_light;}
else if (score>0) { return android.R.color.holo_orange_dark;}
else { return android.R.color.holo_red_light;}
}
public void Check(TangemCard card)
{
String defaultFirstLine = "Unknown balance";
String successFirstLine = "Verified balance";
firstLine = successFirstLine;
firstLine = "Verification failed";
secondLine = "";
// rule 1
if(!CheckOfflineBalance(card) && !CheckOnlineBalance(card)) {
score = 0;
secondLine = "Balance cannot be verified.";
firstLine = defaultFirstLine;
firstLine = "Unknown balance";
secondLine = "Balance cannot be verified. Swipe down to refresh.";
return;
}
// rule 2.a
if(!VerificationWalletKey(card)) {
score = 0;
secondLine = "Wallet verification failed.";
firstLine = defaultFirstLine;
firstLine = "Verification failed";
secondLine = "Wallet verification failed. Tap again.";
return;
}
// rule 2.c
if(!CheckAttestationServiceResult(card)) {
if(!CheckAttestationServiceResult(card) && CheckAttestationServiceAvailable(card)) {
score = 0;
secondLine = "Do not accept. Tangem Attestation service says card is not genuine. ";
firstLine = successFirstLine;
firstLine = "Not genuine banknote";
secondLine = "Tangem Attestation service says the banknote is not genuine.";
return;
}
@ -56,17 +61,20 @@ public class BalanceValidator {
if(card.isBalanceRecieved() && card.isBalanceEqual()) {
score = 100;
firstLine = "Verified balance";
secondLine += " Confirmed balance and banknote identity. ";
secondLine += "Confirmed balance and banknote identity. ";
if(card.getBalance() == 0) {
firstLine = "Zero balance";
}
}
if(card.getFailedBalanceRequestCounter()!=0) {
score = 100 - 5 * card.getFailedBalanceRequestCounter();
firstLine = "Verified balance";
secondLine += "Not all nodes have returned balance. Swipe down to refresh. ";
score -= 5 * card.getFailedBalanceRequestCounter();
secondLine += "Not all nodes have returned balance. Swipe down or tap again. ";
if(score <= 0)
return;
}
//
//
// if(card.isBalanceRecieved() && !card.isBalanceEqual()) {
// score = 0;
// firstLine = "Disputed balance";
@ -78,9 +86,9 @@ public class BalanceValidator {
// rule 7
if(CheckOfflineBalance(card) && !CheckOnlineBalance(card))
{
score -= 10;
String firstLine = "Verified offline balance";
secondLine += "Restore internet connection to be more confidient. ";
score = 90;
firstLine = "Verified offline balance";
secondLine += "Restore internet connection to be more confident. ";
if(score <= 0)
return;
}
@ -90,7 +98,6 @@ public class BalanceValidator {
{
score -= 15;
secondLine += "Card identity was not verified. Cannot reach attestation service. ";
firstLine = successFirstLine;
if(score <= 0)
return;
}
@ -99,7 +106,7 @@ public class BalanceValidator {
if(IsLostSecondRead(card))
{
score -= 30;
secondLine += "Wallet and banknote keys were not verified (tap again). ";
secondLine += "Wallet and banknote keys were not verified. Tap again. ";
if(score <= 0)
return;
}
@ -108,8 +115,8 @@ public class BalanceValidator {
if(!CheckSignHashes(card))
{
score -= 50;
secondLine = "Unguaranteed balance";
firstLine += "Potential unsent transaction at the moment. Try to tap and check this banknote later. ";
firstLine = "Unguaranteed balance";
secondLine += "Potential unsent transaction at the moment. Try to tap and check this banknote later. ";
if(score <= 0)
return;
}