Add decoder for blockExtraData

Author: Lavinia Talpas

examples/evm/blockExtraDataDecoder.ts

@@ -0,0 +1,252 @@
+import "dotenv/config"
+import { Buffer } from "../../src"
+import { Tx } from "../../src/apis/evm"
+import { Serialization } from "../../src/utils"
+import { SerializedType } from "../../src/utils"
+import * as bech32 from "bech32"
+import "dotenv/config"
+
+const cb58: SerializedType = "cb58"
+const serialization: Serialization = Serialization.getInstance()
+
+const getTxData = (item: string) => {
+  const txSplit = item.split("0x000000000001")
+  const prefix = "0x0000"
+  const txData = prefix + txSplit[1]
+  return txData
+}
+
+const fromDecToHex = (item: number) => {
+  let hexVal = item.toString(16)
+  let hexString = hexVal.length < 2 ? "0" + hexVal : hexVal
+  return hexString
+}
+const fromHexToDec = (item: string) => {
+  let hexString = item.split("0x").join("")
+  let decNumber = parseInt(hexString, 16)
+  let value = decNumber / 10 ** 9
+  return value
+}
+const toHexThenDec = (item: number) => {
+  let toHex = fromDecToHex(item).split(",").join("")
+  let hexString = toHex.split("0x").join("")
+  let decNumber = parseInt(hexString, 16)
+  return decNumber
+}
+const bufToHex = (item: string) => {
+  let valueFromJSON = item
+  let bufValueFromJson = Buffer.from(valueFromJSON)
+  let arrValueFromJSON = [...bufValueFromJson]
+  let hexValueFromJSON = arrValueFromJSON.map((item) => fromDecToHex(item))
+  return "0x" + hexValueFromJSON.toString().split(",").join("")
+}
+const bech32Encoder = (item: string) => {
+  const hrp = "avax"
+  let valueFromJSON = item
+  let bufValueFromJson = Buffer.from(valueFromJSON)
+  let arrValueFromJSON = [...bufValueFromJson]
+  let bech32Address = bech32.bech32.encode(
+    hrp,
+    bech32.bech32.toWords(arrValueFromJSON)
+  )
+  return "C-" + bech32Address
+}
+const base58Encoder = (item: string) => {
+  let valToBeEncoded = Buffer.from(item)
+  let base58Val: string = serialization.bufferToType(valToBeEncoded, cb58)
+  return base58Val
+}
+const chainName = (item: string) => {
+  const chainID = base58Encoder(item)
+  let name: string = "null"
+  const cchainID = "2q9e4r6Mu3U68nU1fYjgbR6JvwrRx36CohpAX5UQxse55x1Q5"
+  const pchainID = "11111111111111111111111111111111LpoYY"
+  chainID == "11111111111111111111111111111111LpoYY"
+    ? (name = "P-Chain")
+    : (name = "X-Chain")
+  chainID == cchainID
+    ? (name = "C-Chain")
+    : chainID == pchainID
+    ? name == "P-Chain"
+    : (name = "X-Chain")
+  return name
+}
+
+const main = async (): Promise<any> => {
+  const blockExtraData: string =
+    "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"
+  const txData = getTxData(blockExtraData)
+  const buf: Buffer = new Buffer(txData.slice(2), "hex")
+  const tx: Tx = new Tx()
+  tx.fromBuffer(buf)
+  const txString: string = JSON.stringify(tx)
+  const txToObject = JSON.parse(txString)
+
+  let displayExportTx = () => {
+    //exportTx
+    let exportedTxInputs = txToObject.unsignedTx.transaction.inputs.map(
+      (input) => ({
+        Address: bufToHex(input.address.data),
+        Amount: bufToHex(input.amount.data),
+        AmountValue: "0x" + input.amountValue,
+        DecimalAmountValue: fromHexToDec(input.amountValue) + " AVAX",
+        AssetID: base58Encoder(input.assetID.data),
+        Nonce: bufToHex(input.nonce.data),
+        NonceValue: input.nonceValue,
+        SignaturesCount: toHexThenDec(input.sigCount.data),
+        SignaturesIDs: input.sigIdxs
+      })
+    )
+    let exportedTxExpOutputs =
+      txToObject.unsignedTx.transaction.exportedOutputs.map((out) => ({
+        Type: out._typeName,
+        AssetID: base58Encoder(out.assetID.data),
+        Output: {
+          Type: out.output._typeName,
+          TypeID: out.output._typeID,
+          Locktime: toHexThenDec(out.output.locktime.data),
+          Threshold: toHexThenDec(out.output.threshold.data),
+          NumberOfAddresses: toHexThenDec(out.output.numaddrs.data),
+          Addresses: out.output.addresses.map((address) => ({
+            Type: address._typeName,
+            Bytes: bufToHex(address.bytes.data),
+            BytesSize: address.bsize,
+            Bech32Format: bech32Encoder(address.bytes.data)
+          })),
+          Amount: bufToHex(out.output.amount),
+          AmountValue: "0x" + out.output.amountValue,
+          DecimalAmountValue: fromHexToDec(out.output.amountValue) + " AVAX"
+        }
+      }))
+    let exportedTxCredentials = txToObject.credentials.map((credential) => ({
+      Type: credential._typeName,
+      TypeID: credential._typeID,
+      Signatures: credential.sigArray.map((signature) => ({
+        Type: signature._typeName,
+        Bytes: bufToHex(signature.bytes.data),
+        BytesSize: signature.bsize
+      }))
+    }))
+    let exportTx = {
+      Type: txToObject._typeName,
+      UnsignedTx: {
+        Type: txToObject.unsignedTx._typeName,
+        CodecID: txToObject.unsignedTx.codecID,
+        Transaction: {
+          Type: txToObject.unsignedTx.transaction._typeName,
+          TypeID: txToObject.unsignedTx.transaction._typeID,
+          NetworkID: toHexThenDec(
+            txToObject.unsignedTx.transaction.networkID.data
+          ),
+          BlockchainID: base58Encoder(
+            txToObject.unsignedTx.transaction.blockchainID.data
+          ),
+          BlockchainIDName: chainName(
+            txToObject.unsignedTx.transaction.blockchainID.data
+          ),
+          DestinationChain: base58Encoder(
+            txToObject.unsignedTx.transaction.destinationChain.data
+          ),
+          DestinationChainName: chainName(
+            txToObject.unsignedTx.transaction.destinationChain.data
+          ),
+          NumberOfInputs: toHexThenDec(
+            txToObject.unsignedTx.transaction.numInputs.data
+          ),
+          Inputs: exportedTxInputs,
+          NumberOfExportedOutputs: toHexThenDec(
+            txToObject.unsignedTx.transaction.numExportedOutputs.data
+          ),
+          ExportedOutputs: exportedTxExpOutputs
+        }
+      },
+      Credentials: exportedTxCredentials
+    }
+    console.log(require("util").inspect(exportTx, true, 10))
+  }
+
+  let displayImportTx = () => {
+    //importTX
+    let importedTxImpInputs = txToObject.unsignedTx.transaction.importIns.map(
+      (inp) => ({
+        Type: inp._typeName,
+        TransactionId: base58Encoder(inp.txid.data),
+        OutputId: toHexThenDec(inp.outputidx.data),
+        AssetID: base58Encoder(inp.assetID.data),
+        Input: {
+          Type: inp.input._typeName,
+          TypeID: inp.input._typeID,
+          SignaturesIds: inp.input.sigIdxs.map((signature) => ({
+            Type: signature._typeName,
+            Source: bufToHex(signature.source),
+            Bytes: bufToHex(signature.bytes.data),
+            BytesSize: signature.bsize
+          })),
+          Amount: bufToHex(inp.input.amount),
+          AmountValue: "0x" + inp.input.amountValue,
+          DecimalAmountValue: fromHexToDec(inp.input.amountValue) + " AVAX"
+        }
+      })
+    )
+    let importedTxOutputs = txToObject.unsignedTx.transaction.outs.map(
+      (out) => ({
+        Address: bufToHex(out.address.data),
+        Amount: bufToHex(out.amount.data),
+        AmountValue: "0x" + out.amountValue,
+        DecimalAmountValue: fromHexToDec(out.amountValue) + " AVAX",
+        AssetID: base58Encoder(out.assetID.data)
+      })
+    )
+    let importedTxCredentials = txToObject.credentials.map((credential) => ({
+      Type: credential._typeName,
+      TypeID: credential._typeID,
+      Signatures: credential.sigArray.map((signature) => ({
+        Type: signature._typeName,
+        Bytes: bufToHex(signature.bytes.data),
+        BytesSize: signature.bsize
+      }))
+    }))
+    let importTx = {
+      Type: txToObject._typeName,
+      UnsignedTx: {
+        Type: txToObject.unsignedTx._typeName,
+        CodecID: txToObject.unsignedTx.codecID,
+        Transaction: {
+          Type: txToObject.unsignedTx.transaction._typeName,
+          TypeID: txToObject.unsignedTx.transaction._typeID,
+          NetworkID: toHexThenDec(
+            txToObject.unsignedTx.transaction.networkID.data
+          ),
+          BlockchainID: base58Encoder(
+            txToObject.unsignedTx.transaction.blockchainID.data
+          ),
+          BlockchainIDName: chainName(
+            txToObject.unsignedTx.transaction.blockchainID.data
+          ),
+          SourceChain: base58Encoder(
+            txToObject.unsignedTx.transaction.sourceChain.data
+          ),
+          SourceChainName: chainName(
+            txToObject.unsignedTx.transaction.sourceChain.data
+          ),
+          NumberOfImportedInputs: toHexThenDec(
+            txToObject.unsignedTx.transaction.numIns.data
+          ),
+          ImportedInputs: importedTxImpInputs,
+          NumberOfOutputs: toHexThenDec(
+            txToObject.unsignedTx.transaction.numOuts.data
+          ),
+          Outputs: importedTxOutputs
+        }
+      },
+      Credentials: importedTxCredentials
+    }
+    console.log(require("util").inspect(importTx, true, 10))
+  }
+
+  txToObject.unsignedTx.transaction._typeName == "ExportTx"
+    ? displayExportTx()
+    : displayImportTx()
+}
+
+main()