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interpret the first raw block cypher script
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@h0ngcha0
h0ngcha0 committed Feb 25, 2018
1 parent 9fc01a1 commit 600590b
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8 changes: 4 additions & 4 deletions src/main/scala/me/hongchao/bitcoin4s/external/BlockCypherApi.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,7 @@ object BlockCypherApi {
addresses: List[String],
script_type: String,
age: Long,
witness: List[String]
witness: Option[List[String]] = None
) {
val prevTxHash = ScodecHash(ByteVector(Hash.fromHex(prev_hash)))
def toTxIn = TxIn(
Expand All @@ -56,7 +56,7 @@ object BlockCypherApi {
@json case class TransactionOutput(
value: Long,
script: String,
spent_by: String,
spent_by: Option[String],
addresses: List[String],
script_type: String
) {
Expand All @@ -78,7 +78,7 @@ object BlockCypherApi {
confirmed: ZonedDateTime,
received: ZonedDateTime,
ver: Int,
lock_time: Long,
lock_time: Long = 0,
double_spend: Boolean,
vin_sz: Int,
vout_sz: Int,
Expand All @@ -95,7 +95,7 @@ object BlockCypherApi {
)
}

protected def rawTxUrl(txId: String) = Uri(s"https://chain.so/api/v2/tx/BTC/$txId")
protected def rawTxUrl(txId: String) = Uri(s"https://api.blockcypher.com/v1/btc/main/txs/$txId")

def parseTransaction(raw: String): Transaction = {
Json.fromJson[Transaction](Json.parse(raw)) match {
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190 changes: 190 additions & 0 deletions src/test/scala/me/hongchao/bitcoin4s/external/BlockCypherApiSpec.scala
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Original file line number Diff line number Diff line change
@@ -0,0 +1,190 @@
package me.hongchao.bitcoin4s.external

import com.typesafe.scalalogging.StrictLogging
import me.hongchao.bitcoin4s.Spec
import me.hongchao.bitcoin4s.crypto.Hash
import me.hongchao.bitcoin4s.script._
import org.spongycastle.util.encoders.Hex

import scala.util.control.Exception.allCatch
import cats.implicits._

class BlockCypherApiSpec extends Spec with StrictLogging {

val blockCypherCreditingRawTransaction =
s"""
|{
| "block_hash": "0000000000000000000d123700875dd3ff100d0b7cc978714f8f2f945763232c",
| "block_height": 508427,
| "block_index": 385,
| "hash": "4c24b3019f117f109ffac46eb406c544f6d5a57fd197e5ef845de71f15b42771",
| "addresses": [
| "14WCUpKjenh7ZmRnVAkihTkLDH1PCeXwZ6",
| "1DydczknH5SpMHDtp48zECWi2GVGYgJ2J6",
| "3BKAXzMepun6cBHGrouS95EnnYQAZVfXfz"
| ],
| "total": 4907350,
| "fees": 33600,
| "size": 224,
| "preference": "high",
| "relayed_by": "107.172.9.157:8333",
| "confirmed": "2018-02-09T20:39:12Z",
| "received": "2018-02-09T20:34:27.018Z",
| "ver": 1,
| "double_spend": false,
| "vin_sz": 1,
| "vout_sz": 2,
| "confirmations": 2315,
| "confidence": 1,
| "inputs": [
| {
| "prev_hash": "85db1042f083a8fd6f96fd1a76dc7b8373df9f434979bdcf2432ecf9e0c212ac",
| "output_index": 0,
| "script": "483045022100fb4454cd8e07c07471233d17ffd0ed2a6913cdf6121e9c6e20c48410308eede502203cb8e7274fb59eb96b6a28d707e06a46d2c9ead4320dafc0837d7ccb91f38add012102a8d373f7745adf9971324012ab0a7399e78e881ea7fa316adb751444bcc18605",
| "output_value": 4940950,
| "sequence": 4294967295,
| "addresses": [
| "1DydczknH5SpMHDtp48zECWi2GVGYgJ2J6"
| ],
| "script_type": "pay-to-pubkey-hash",
| "age": 506681
| }
| ],
| "outputs": [
| {
| "value": 2441174,
| "script": "a914698f4b7e28e4b66e68783be11bbe059de03cd39f87",
| "spent_by": "1191bdc374a460839471cedb284fc82e5a9d2c45c49a4a4658db5ab9c5916911",
| "addresses": [
| "3BKAXzMepun6cBHGrouS95EnnYQAZVfXfz"
| ],
| "script_type": "pay-to-script-hash"
| },
| {
| "value": 2466176,
| "script": "76a914266e05ddf3c4df4c61db0ed623428d12c9a1342088ac",
| "addresses": [
| "14WCUpKjenh7ZmRnVAkihTkLDH1PCeXwZ6"
| ],
| "script_type": "pay-to-pubkey-hash"
| }
| ]
|}
""".stripMargin

val blockCypherSpendingRawTransaction =
s"""
|{
| "block_hash": "000000000000000000489e24c0f64b7027cc80d3d20faef1f1cdc3b0daac4019",
| "block_height": 508439,
| "block_index": 5,
| "hash": "1191bdc374a460839471cedb284fc82e5a9d2c45c49a4a4658db5ab9c5916911",
| "addresses": [
| "1FAt1gokixe9Y6QdHhXeJ5bjXmKCeNp6a6",
| "1Gez1oJoa5hwgfcXkYHj68298C4RQwApQA",
| "3BKAXzMepun6cBHGrouS95EnnYQAZVfXfz"
| ],
| "total": 2386774,
| "fees": 54400,
| "size": 142,
| "preference": "high",
| "relayed_by": "24.103.166.34:8333",
| "confirmed": "2018-02-09T22:44:55Z",
| "received": "2018-02-09T22:44:16.322Z",
| "ver": 2,
| "lock_time": 508438,
| "double_spend": false,
| "vin_sz": 1,
| "vout_sz": 2,
| "confirmations": 137,
| "confidence": 1,
| "inputs": [
| {
| "prev_hash": "4c24b3019f117f109ffac46eb406c544f6d5a57fd197e5ef845de71f15b42771",
| "output_index": 0,
| "script": "16001413ecf507209720bc23e47368d98303629eed74e3",
| "output_value": 2441174,
| "sequence": 4294967294,
| "addresses": [
| "3BKAXzMepun6cBHGrouS95EnnYQAZVfXfz"
| ],
| "script_type": "pay-to-script-hash",
| "age": 508427,
| "witness": [
| "3044022061d6ef24187f5666ed1d2c771d68f2ce8a0b539df632bd54ad757c9654d07f0202204cf5c998e43a934c8e241cb1a9ebff5ccecc06072dea47fe6e691d8ea61d10c701",
| "027bb5772df97bbfc616b7a1ae91a986ea4d295f4e27d26ecf43e073f92d721b7a"
| ]
| }
| ],
| "outputs": [
| {
| "value": 977703,
| "script": "76a9149b7016504b9b035c0ffbc54853d8758faf85271488ac",
| "spent_by": "b945cc88c7295a0fe53de3d654be277135957e8aaf9f243db94e19d889223a17",
| "addresses": [
| "1FAt1gokixe9Y6QdHhXeJ5bjXmKCeNp6a6"
| ],
| "script_type": "pay-to-pubkey-hash"
| },
| {
| "value": 1409071,
| "script": "76a914abb8debac72eef4b426d81fac4810c5cb3971f9f88ac",
| "spent_by": "dd1e147eaa6715f70e6be23d9af391b51fd19c76d26ba0ece865cf7539ab4f9b",
| "addresses": [
| "1Gez1oJoa5hwgfcXkYHj68298C4RQwApQA"
| ],
| "script_type": "pay-to-pubkey-hash"
| }
| ]
|}
""".stripMargin

"Interpreter" should "be able to interpret raw transaction fetched from BlockCypher API" in {

val creditingTransaction = BlockCypherApi.parseTransaction(blockCypherCreditingRawTransaction)
val spendingTransaction = BlockCypherApi.parseTransaction(blockCypherSpendingRawTransaction)

// Only look at the first input
//val firstScriptPutKey = spendingTx.tx_in(0).sig_script
val spendingTx = spendingTransaction.toTxWitness
val txIn = spendingTransaction.inputs(0)
val txOut = creditingTransaction.outputs(0)
val scriptSig = parseHexString(txIn.script)
val scriptPubKey = parseHexString(txOut.script)
val witnessesStack = txIn.witness.map { rawWitnesses =>
rawWitnesses.reverse.flatMap { rawWitness =>
allCatch.opt(Hex.decode(rawWitness).toSeq).map(ScriptConstant.apply)
}
}
val amount = 2441174
val flags = toScriptFlags("P2SH,WITNESS")

val initialState = InterpreterState(
scriptPubKey = scriptPubKey,
scriptSig = scriptSig,
scriptWitnessStack = witnessesStack,
flags = flags,
transaction = spendingTx,
inputIndex = 0,
amount = amount
)

val interpreterOutcome = Interpreter.create(verbose = false).run(initialState)

interpreterOutcome match {
case Right((finalState@_, interpretedResult)) =>
logger.info(s"interpretedResult: $interpretedResult")

case Left(e) =>
throw e
}
}

private def parseHexString(hex: String): Seq[ScriptElement] = {
Parser.parse(Hash.fromHex(hex))
}

private def toScriptFlags(scriptFlagsString: String): Seq[ScriptFlag] = {
scriptFlagsString.split(",").map(_.trim).flatMap(ScriptFlag.fromString)
}
}
81 changes: 0 additions & 81 deletions src/test/scala/me/hongchao/bitcoin4s/external/BlockchainInfoApiSpec.scala
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