Updated on 2026-08-14
This commit is contained in:
Tangem
parent
161bf4ab5c
commit
d35dc8a87b
10 changed files with 784 additions and 5 deletions
507
app/src/main/java/com/tangem/wallet/tezos/TezosEngine.kt
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507
app/src/main/java/com/tangem/wallet/tezos/TezosEngine.kt
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@ -0,0 +1,507 @@
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package com.tangem.wallet.tezos
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import android.net.Uri
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import android.os.StrictMode
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import android.text.InputFilter
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import android.util.Log
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import com.tangem.App
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import com.tangem.data.network.ServerApiTezos
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import com.tangem.data.network.model.TezosAccountResponse
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import com.tangem.data.network.model.TezosForgeBody
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import com.tangem.data.network.model.TezosOperationContent
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import com.tangem.data.network.model.TezosPreapplyBody
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import com.tangem.tangem_card.data.TangemCard
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import com.tangem.tangem_card.tasks.SignTask
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import com.tangem.tangem_card.util.Util
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import com.tangem.util.CryptoUtil
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import com.tangem.util.DecimalDigitsInputFilter
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import com.tangem.wallet.*
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import io.reactivex.observers.DisposableSingleObserver
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import org.spongycastle.jcajce.provider.digest.Blake2b
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import java.math.BigDecimal
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class TezosEngine : CoinEngine {
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constructor()
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constructor(context: TangemContext) : super(context) {
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if (context.coinData == null) {
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coinData = TezosData()
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context.coinData = coinData
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} else if (context.coinData is TezosData) {
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coinData = context.coinData as TezosData
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} else {
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throw Exception("Invalid type of Blockchain data for XlmEngine")
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}
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}
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private val TAG = TezosEngine::class.java.simpleName
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var coinData: TezosData? = null
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private fun getDecimals() = 6
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@Throws(Exception::class)
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private fun checkBlockchainDataExists() {
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if (coinData == null) throw Exception("No blockchain data")
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}
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override fun awaitingConfirmation(): Boolean {
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return App.pendingTransactionsStorage.hasTransactions(ctx.card)
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}
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override fun getBalanceHTML(): String? {
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val balance = balance
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return if (balance != null) {
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balance.toDescriptionString(getDecimals())
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} else {
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""
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}
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}
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override fun getBalanceCurrency(): String? {
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return "XTZ"
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}
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override fun isBalanceNotZero(): Boolean {
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if (coinData == null) return false
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return if (balance == null) false else balance!!.notZero()
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}
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override fun hasBalanceInfo(): Boolean {
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return if (coinData == null) false else coinData!!.balance != null
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}
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override fun isExtractPossible(): Boolean {
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if (!hasBalanceInfo()) {
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ctx.setMessage(R.string.loaded_wallet_error_obtaining_blockchain_data)
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} else if (!isBalanceNotZero) {
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ctx.setMessage(R.string.general_wallet_empty)
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} else if (awaitingConfirmation()) {
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ctx.setMessage(R.string.loaded_wallet_message_wait)
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} else {
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return true
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}
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return false
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}
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override fun getFeeCurrency(): String? {
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return "XTZ"
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}
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override fun validateAddress(address: String?): Boolean {
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val prefixedHashWithChecksum = Base58.decodeBase58(address)
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if (prefixedHashWithChecksum == null || prefixedHashWithChecksum.size != 27) return false
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val prefixedHash = prefixedHashWithChecksum.copyOf(23)
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val checksum = prefixedHashWithChecksum.copyOfRange(23, 27)
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val calcChecksum = CryptoUtil.doubleSha256(prefixedHash).copyOfRange(0, 4)
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return calcChecksum.contentEquals(checksum)
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}
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override fun isNeedCheckNode(): Boolean {
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return false
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}
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override fun getWalletExplorerUri(): Uri? {
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return Uri.parse("https://tezblock.io/account/" + ctx.coinData.wallet)
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}
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override fun getShareWalletUri(): Uri? {
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return Uri.parse(ctx.coinData.wallet)
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}
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override fun getAmountInputFilters(): Array<InputFilter>? {
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return arrayOf(DecimalDigitsInputFilter(getDecimals()))
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}
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override fun checkNewTransactionAmount(amount: Amount): Boolean {
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if (coinData == null) return false
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return amount <= balance
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}
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override fun checkNewTransactionAmountAndFee(amountValue: Amount?,
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feeValue: Amount?,
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isIncludeFee: Boolean
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): Boolean {
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try {
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checkBlockchainDataExists()
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} catch (e: java.lang.Exception) {
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e.printStackTrace()
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return false
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}
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if (feeValue == null || amountValue == null) return false
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if (feeValue.isZero || amountValue.isZero) return false
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if (isIncludeFee && (amountValue > balance || amountValue < feeValue)) return false
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if (!isIncludeFee && amountValue.add(feeValue) > balance) return false
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return true
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}
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override fun validateBalance(balanceValidator: BalanceValidator): Boolean {
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try {
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if (ctx.card.offlineBalance == null &&
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!ctx.coinData.isBalanceReceived ||
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!ctx.coinData.isBalanceReceived &&
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ctx.card.remainingSignatures != ctx.card.maxSignatures
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) {
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balanceValidator.setScore(0)
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balanceValidator.firstLine = R.string.balance_validator_first_line_unknown_balance
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balanceValidator.setSecondLine(R.string.balance_validator_second_line_unverified_balance)
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return false
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}
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if (coinData!!.isBalanceReceived) {
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balanceValidator.setScore(100)
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balanceValidator.firstLine = R.string.balance_validator_first_line_verified_balance
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balanceValidator.setSecondLine(R.string.balance_validator_second_line_confirmed_in_blockchain)
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if (balance!!.isZero) {
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balanceValidator.firstLine = R.string.balance_validator_first_line_empty_wallet
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balanceValidator.setSecondLine(R.string.empty_string)
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}
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}
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if (ctx.card.offlineBalance != null &&
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!coinData!!.isBalanceReceived &&
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ctx.card.remainingSignatures ==
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ctx.card.maxSignatures &&
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balance!!.notZero()
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) {
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balanceValidator.setScore(80)
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balanceValidator.firstLine = R.string.balance_validator_first_line_verified_offline
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balanceValidator.setSecondLine(
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R.string.balance_validator_second_line_internet_to_get_balance
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)
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}
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return true
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} catch (e: java.lang.Exception) {
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e.printStackTrace()
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return false
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}
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}
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override fun getBalance(): Amount? {
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var balanceAmount: Amount? = null
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if (hasBalanceInfo()) {
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val xtzBalance = BigDecimal
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.valueOf(coinData!!.balance!!).movePointLeft(getDecimals())
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balanceAmount = Amount(xtzBalance, balanceCurrency)
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}
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return balanceAmount
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}
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override fun evaluateFeeEquivalent(fee: String?): String? {
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return if (!coinData!!.amountEquivalentDescriptionAvailable) "" else try {
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val feeAmount = Amount(fee, feeCurrency)
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feeAmount.toEquivalentString(coinData!!.rate.toDouble())
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} catch (e: java.lang.Exception) {
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""
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}
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}
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override fun getBalanceEquivalent(): String? {
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if (coinData == null || !coinData!!.amountEquivalentDescriptionAvailable) return ""
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val balance = balance ?: return ""
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return balance.toEquivalentString(coinData!!.rate.toDouble())
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}
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override fun calculateAddress(pkUncompressed: ByteArray): String? {
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val publicKeyHash = Blake2b.Blake2b160().digest(pkUncompressed)
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val tz1Prefix = Util.hexToBytes("06A19F")
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val prefixedHash = tz1Prefix + publicKeyHash
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val checksum = CryptoUtil.doubleSha256(prefixedHash).copyOfRange(0, 4)
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val prefixedHashWithChecksum = prefixedHash + checksum
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return Base58.encodeBase58(prefixedHashWithChecksum)
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}
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fun calculateTezosPublicKey(pkUncompressed: ByteArray): String {
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val edpkPrefix = Util.hexToBytes("0D0F25D9")
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val prefixedPubKey = edpkPrefix + pkUncompressed
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val checksum = CryptoUtil.doubleSha256(prefixedPubKey).copyOfRange(0, 4)
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val prefixedHashWithChecksum = prefixedPubKey + checksum
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return Base58.encodeBase58(prefixedHashWithChecksum)
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}
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override fun convertToAmount(internalAmount: InternalAmount): Amount {
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return Amount(internalAmount.movePointLeft(getDecimals()), balanceCurrency)
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}
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override fun convertToAmount(strAmount: String, currency: String): Amount {
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return Amount(strAmount, currency)
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}
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override fun convertToInternalAmount(amount: Amount): InternalAmount {
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return InternalAmount(amount.movePointRight(getDecimals()), "mutez")
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}
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override fun convertToInternalAmount(bytes: ByteArray?): InternalAmount? {
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if (bytes == null) return null
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val reversed = ByteArray(bytes.size)
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for (i in bytes.indices) reversed[i] = bytes[bytes.size - i - 1]
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return InternalAmount(Util.byteArrayToLong(reversed), "mutez")
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}
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override fun convertToByteArray(internalAmount: InternalAmount): ByteArray? {
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val bytes = Util.longToByteArray(internalAmount.longValueExact())
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val reversed = ByteArray(bytes.size)
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for (i in bytes.indices) reversed[i] = bytes[bytes.size - i - 1]
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return reversed
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}
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override fun createCoinData(): CoinData {
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return TezosData()
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}
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override fun getUnspentInputsDescription() = ""
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override fun constructTransaction(
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amountValue: Amount,
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feeValue: Amount,
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IncFee: Boolean,
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targetAddress: String
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): SignTask.TransactionToSign {
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checkBlockchainDataExists()
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val policy = StrictMode.ThreadPolicy.Builder().permitAll().build()
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StrictMode.setThreadPolicy(policy)
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val finalAmount = if (IncFee) {
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amountValue.minus(feeValue)
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} else {
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amountValue
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}
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val serverApiTezos = ServerApiTezos()
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val headerResponse = serverApiTezos.header
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val contents = arrayListOf<TezosOperationContent>()
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var counter = coinData!!.counter!!
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if (!coinData!!.publicKeyReavealed!!) {
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counter++
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val revealOp = TezosOperationContent(
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kind = "reveal",
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source = coinData!!.wallet,
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fee = "1300",
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counter = counter.toString(),
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gas_limit = "10000",
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storage_limit = "0",
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public_key = coinData!!.tezosPublicKey!!
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)
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contents.add(revealOp)
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}
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counter++
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val transactionOp = TezosOperationContent(
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kind = "transaction",
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source = coinData!!.wallet,
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fee = "1350",
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counter = counter.toString(),
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gas_limit = "10600",
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storage_limit = "277",
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destination = targetAddress,
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amount = finalAmount.movePointRight(getDecimals()).toBigInteger().toString()
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)
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contents.add(transactionOp)
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val tezosForgeBody = TezosForgeBody(headerResponse.hash!!, contents)
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val forgeResponse = serverApiTezos.forgeOperations(tezosForgeBody)
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val watermark = "03"
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val forgedBytes = Util.hexToBytes(watermark + forgeResponse)
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return object : SignTask.TransactionToSign {
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override fun isSigningMethodSupported(signingMethod: TangemCard.SigningMethod): Boolean {
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return signingMethod == TangemCard.SigningMethod.Sign_Hash
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}
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@Throws(java.lang.Exception::class)
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override fun getHashesToSign(): Array<ByteArray?> {
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val dataForSign = arrayOfNulls<ByteArray>(1)
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dataForSign[0] = Blake2b.Blake2b256().digest(forgedBytes)
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return dataForSign
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}
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@Throws(java.lang.Exception::class)
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override fun getRawDataToSign(): ByteArray? {
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throw java.lang.Exception("Signing of raw transaction not supported for " + this.javaClass.simpleName)
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}
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@Throws(java.lang.Exception::class)
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override fun getHashAlgToSign(): String? {
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throw java.lang.Exception("Signing of raw transaction not supported for " + this.javaClass.simpleName)
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}
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@Throws(java.lang.Exception::class)
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override fun getIssuerTransactionSignature(dataToSignByIssuer: ByteArray?): ByteArray? {
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throw java.lang.Exception("Transaction validation by issuer not supported in this version")
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}
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@Throws(java.lang.Exception::class)
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override fun onSignCompleted(signFromCard: ByteArray): ByteArray? {
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val edsigPrefix = Util.hexToBytes("09F5CD8612")
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val prefixedSignature = edsigPrefix + signFromCard
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val checksum = CryptoUtil.doubleSha256(prefixedSignature).copyOfRange(0, 4)
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val prefixedSignatureWithChecksum = prefixedSignature + checksum
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val preapplyBody = TezosPreapplyBody(
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protocol = headerResponse.protocol!!,
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branch = headerResponse.hash!!,
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contents = contents,
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signature = Base58.encodeBase58(prefixedSignatureWithChecksum)
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)
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try {
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serverApiTezos.peapplyOperations(preapplyBody)
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} catch (e: java.lang.Exception) {
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ctx.error = e.message
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return null
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}
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val txForSend = Util.hexToBytes(forgeResponse) + signFromCard
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notifyOnNeedSendTransaction(txForSend)
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return txForSend
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}
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}
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}
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override fun requestBalanceAndUnspentTransactions(
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blockchainRequestsCallbacks: BlockchainRequestsCallbacks
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) {
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coinData!!.tezosPublicKey = calculateTezosPublicKey(ctx.card.walletPublicKey)
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val serverApiTezos = ServerApiTezos()
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val accountObserver = object : DisposableSingleObserver<TezosAccountResponse>() {
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override fun onSuccess(response: TezosAccountResponse) {
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coinData!!.balance = response.balance
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coinData!!.isBalanceReceived = true
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coinData!!.counter = response.counter
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if (serverApiTezos.isRequestsSequenceCompleted) {
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blockchainRequestsCallbacks.onComplete(ctx.hasError())
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} else {
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blockchainRequestsCallbacks.onProgress()
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}
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}
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override fun onError(e: Throwable) {
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Log.e(TAG, "requestBalanceAndUnspentTransactions error " + e.message)
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ctx.error = e.message
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e.printStackTrace()
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if (serverApiTezos.isRequestsSequenceCompleted) {
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blockchainRequestsCallbacks.onComplete(false)
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} else {
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blockchainRequestsCallbacks.onProgress()
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}
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}
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}
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val managerKeyObserver = object : DisposableSingleObserver<String>() {
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override fun onSuccess(response: String) {
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coinData!!.publicKeyReavealed = true
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if (serverApiTezos.isRequestsSequenceCompleted) {
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blockchainRequestsCallbacks.onComplete(ctx.hasError())
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} else {
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blockchainRequestsCallbacks.onProgress()
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}
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}
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override fun onError(e: Throwable) {
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Log.e(TAG, "requestFee error " + e.message)
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e.printStackTrace()
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coinData!!.publicKeyReavealed = false // error expected when key is not revealed
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if (serverApiTezos.isRequestsSequenceCompleted) {
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blockchainRequestsCallbacks.onComplete(ctx.hasError())
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} else {
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blockchainRequestsCallbacks.onProgress()
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}
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}
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}
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serverApiTezos.getAddress(coinData!!.wallet, accountObserver)
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serverApiTezos.getMangerKey(coinData!!.wallet, managerKeyObserver)
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}
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override fun requestFee(
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blockchainRequestsCallbacks: BlockchainRequestsCallbacks,
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targetAddress: String?,
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amount: Amount?
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) {
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var fee: BigDecimal = BigDecimal.valueOf(0.00135)
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if (!coinData!!.publicKeyReavealed!!) {
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fee += BigDecimal.valueOf(0.0013)
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}
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val serverApiTezos = ServerApiTezos()
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val accountObserver = object : DisposableSingleObserver<TezosAccountResponse>() {
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override fun onSuccess(response: TezosAccountResponse) {
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if (response.balance == 0L) {
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fee += BigDecimal.valueOf(0.257)
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}
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val feeAmount = Amount(fee, feeCurrency)
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coinData!!.minFee = feeAmount
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coinData!!.normalFee = feeAmount
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coinData!!.maxFee = feeAmount
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blockchainRequestsCallbacks.onComplete(true)
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}
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override fun onError(e: Throwable) {
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Log.e(TAG, "requestFee error " + e.message)
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ctx.error = e.message
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e.printStackTrace()
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blockchainRequestsCallbacks.onComplete(false)
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}
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}
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serverApiTezos.getAddress(targetAddress, accountObserver)
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}
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override fun requestSendTransaction(
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blockchainRequestsCallbacks: BlockchainRequestsCallbacks,
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txForSend: ByteArray?
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) {
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if (txForSend == null) {
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blockchainRequestsCallbacks.onComplete(false)
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} else {
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val injectObserver = object : DisposableSingleObserver<Any>() {
|
||||
override fun onSuccess(response: Any) {
|
||||
blockchainRequestsCallbacks.onComplete(true)
|
||||
}
|
||||
|
||||
override fun onError(e: Throwable) {
|
||||
blockchainRequestsCallbacks.onComplete(false)
|
||||
}
|
||||
}
|
||||
|
||||
ServerApiTezos().injectOperations(Util.bytesToHex(txForSend), injectObserver)
|
||||
}
|
||||
}
|
||||
|
||||
override fun allowSelectFeeLevel(): Boolean {
|
||||
return false
|
||||
}
|
||||
|
||||
override fun pendingTransactionTimeoutInSeconds(): Int {
|
||||
return 60
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue