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Merge pull request #2801 from ManfredKarrer/restrict-new-accounts
Add check for account age to apply restrictions
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| /* | ||
| * This file is part of Bisq. | ||
| * | ||
| * Bisq is free software: you can redistribute it and/or modify it | ||
| * under the terms of the GNU Affero General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or (at | ||
| * your option) any later version. | ||
| * | ||
| * Bisq is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public | ||
| * License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with Bisq. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| package bisq.core.offer; | ||
|
|
||
| import bisq.core.payment.payload.PaymentMethod; | ||
| import bisq.core.trade.Trade; | ||
|
|
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| import org.bitcoinj.core.Coin; | ||
|
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| public class OfferRestrictions { | ||
| public static Coin TOLERATED_SMALL_TRADE_AMOUNT = Coin.parseCoin("0.01"); | ||
|
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| public static boolean isOfferRisky(Offer offer) { | ||
| return offer != null && | ||
| offer.isBuyOffer() && | ||
| PaymentMethod.hasChargebackRisk(offer.getPaymentMethod()) && | ||
| isMinTradeAmountRisky(offer); | ||
| } | ||
|
|
||
| public static boolean isSellOfferRisky(Offer offer) { | ||
| return offer != null && | ||
| PaymentMethod.hasChargebackRisk(offer.getPaymentMethod()) && | ||
| isMinTradeAmountRisky(offer); | ||
| } | ||
|
|
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| public static boolean isTradeRisky(Trade trade) { | ||
| if (trade == null) | ||
| return false; | ||
|
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| Offer offer = trade.getOffer(); | ||
| return offer != null && | ||
| PaymentMethod.hasChargebackRisk(offer.getPaymentMethod()) && | ||
| trade.getTradeAmount() != null && | ||
| isAmountRisky(trade.getTradeAmount()); | ||
| } | ||
|
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| public static boolean isMinTradeAmountRisky(Offer offer) { | ||
| return isAmountRisky(offer.getMinAmount()); | ||
| } | ||
|
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| public static boolean isAmountRisky(Coin amount) { | ||
| return amount.isGreaterThan(TOLERATED_SMALL_TRADE_AMOUNT); | ||
| } | ||
| } |
82 changes: 82 additions & 0 deletions
82
core/src/main/java/bisq/core/payment/AccountAgeRestrictions.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| /* | ||
| * This file is part of Bisq. | ||
| * | ||
| * Bisq is free software: you can redistribute it and/or modify it | ||
| * under the terms of the GNU Affero General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or (at | ||
| * your option) any later version. | ||
| * | ||
| * Bisq is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public | ||
| * License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Affero General Public License | ||
| * along with Bisq. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
|
|
||
| package bisq.core.payment; | ||
|
|
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| import bisq.core.offer.Offer; | ||
| import bisq.core.offer.OfferPayload; | ||
| import bisq.core.offer.OfferRestrictions; | ||
| import bisq.core.payment.payload.PaymentMethod; | ||
| import bisq.core.trade.Trade; | ||
|
|
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| import bisq.common.util.Utilities; | ||
|
|
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| import java.util.Date; | ||
| import java.util.GregorianCalendar; | ||
|
|
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| import lombok.extern.slf4j.Slf4j; | ||
|
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| @Slf4j | ||
| public class AccountAgeRestrictions { | ||
| public static final long SAFE_ACCOUNT_AGE_DATE = Utilities.getUTCDate(2019, GregorianCalendar.MARCH, 15).getTime(); | ||
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| public static boolean isMakersAccountAgeImmature(AccountAgeWitnessService accountAgeWitnessService, Offer offer) { | ||
| long accountCreationDate = new Date().getTime() - accountAgeWitnessService.getMakersAccountAge(offer, new Date()); | ||
| return accountCreationDate > SAFE_ACCOUNT_AGE_DATE; | ||
| } | ||
|
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| public static boolean isTradePeersAccountAgeImmature(AccountAgeWitnessService accountAgeWitnessService, Trade trade) { | ||
| long accountCreationDate = new Date().getTime() - accountAgeWitnessService.getTradingPeersAccountAge(trade); | ||
| return accountCreationDate > SAFE_ACCOUNT_AGE_DATE; | ||
| } | ||
|
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| public static boolean isMyAccountAgeImmature(AccountAgeWitnessService accountAgeWitnessService, PaymentAccount myPaymentAccount) { | ||
| long accountCreationDate = new Date().getTime() - accountAgeWitnessService.getMyAccountAge(myPaymentAccount.getPaymentAccountPayload()); | ||
| return accountCreationDate > SAFE_ACCOUNT_AGE_DATE; | ||
| } | ||
|
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| public static long getMyTradeLimitAtCreateOffer(AccountAgeWitnessService accountAgeWitnessService, | ||
| PaymentAccount paymentAccount, | ||
| String currencyCode, | ||
| OfferPayload.Direction direction) { | ||
| if (direction == OfferPayload.Direction.BUY && | ||
| PaymentMethod.hasChargebackRisk(paymentAccount.getPaymentMethod()) && | ||
| AccountAgeRestrictions.isMyAccountAgeImmature(accountAgeWitnessService, paymentAccount)) { | ||
| return OfferRestrictions.TOLERATED_SMALL_TRADE_AMOUNT.value; | ||
| } else { | ||
| return accountAgeWitnessService.getMyTradeLimit(paymentAccount, currencyCode); | ||
| } | ||
| } | ||
|
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| public static long getMyTradeLimitAtTakeOffer(AccountAgeWitnessService accountAgeWitnessService, | ||
| PaymentAccount paymentAccount, | ||
| Offer offer, | ||
| String currencyCode, | ||
| OfferPayload.Direction direction) { | ||
| if (direction == OfferPayload.Direction.BUY && PaymentMethod.hasChargebackRisk(paymentAccount.getPaymentMethod()) && | ||
| AccountAgeRestrictions.isMakersAccountAgeImmature(accountAgeWitnessService, offer)) { | ||
| // Taker is seller | ||
| return OfferRestrictions.TOLERATED_SMALL_TRADE_AMOUNT.value; | ||
| } else if (direction == OfferPayload.Direction.SELL && PaymentMethod.hasChargebackRisk(paymentAccount.getPaymentMethod()) && | ||
| AccountAgeRestrictions.isMyAccountAgeImmature(accountAgeWitnessService, paymentAccount)) { | ||
| // Taker is buyer | ||
| return OfferRestrictions.TOLERATED_SMALL_TRADE_AMOUNT.value; | ||
| } else { | ||
| return accountAgeWitnessService.getMyTradeLimit(paymentAccount, currencyCode); | ||
| } | ||
| } | ||
| } |
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