bitcore-lib-cash - npm Package Compare versions

Comparing version 8.25.40 to 8.25.46

lib/crypto/bn.js

@@ -190,2 +190,32 @@ 'use strict';
 
+BN.prototype.getSize = function() {
+  const bin = this.toString(2).replace('-', '');
+  const numBits = bin.length + 1;
+  return numBits / 8;
+};
+
+BN.prototype.checkOperationForOverflow = function (operand, result, maxSize) {
+  if (this.getSize() > maxSize || operand.getSize() > maxSize || result.getSize() > 8) {
+    throw new Error('overflow');
+  }
+};
+
+BN.prototype.safeAdd = function(bigNumToAdd, maxSize) {
+  const sum = this.add(bigNumToAdd);
+  this.checkOperationForOverflow(bigNumToAdd, sum, maxSize);
+  return sum;
+};
+
+BN.prototype.safeSub = function(bigNumToSubtract, maxSize) {
+  const difference = this.sub(bigNumToSubtract);
+  this.checkOperationForOverflow(bigNumToSubtract, difference, maxSize);
+  return difference;
+};
+
+BN.prototype.safeMul = function(bigNumToMultiply, maxSize) {
+  const product = this.mul(bigNumToMultiply);
+  this.checkOperationForOverflow(bigNumToMultiply, product, maxSize);
+  return product;
+};
+
 module.exports = BN;

lib/opcode.js

@@ -228,3 +228,22 @@ 'use strict';
   OP_PUBKEY: 254,
-  OP_INVALIDOPCODE: 255
+  OP_INVALIDOPCODE: 255,
+
+  // introspection
+  OP_INPUTINDEX: 192,
+  OP_ACTIVEBYTECODE: 193,
+  OP_TXVERSION: 194,
+  OP_TXINPUTCOUNT: 195,
+  OP_TXOUTPUTCOUNT: 196,
+  OP_TXLOCKTIME: 197,
+  OP_UTXOVALUE: 198,
+  OP_UTXOBYTECODE: 199,
+  OP_OUTPOINTTXHASH: 200,
+  OP_OUTPOINTINDEX: 201,
+  OP_INPUTBYTECODE: 202,
+  OP_INPUTSEQUENCENUMBER: 203,
+  OP_OUTPUTVALUE: 204,
+  OP_OUTPUTBYTECODE: 205,
+
+  OP_RESERVED3: 206,
+  OP_RESERVED4: 207
 };
@@ -231,0 +250,0 @@

lib/script/script.js

@@ -397,2 +397,29 @@ var Address = require('../address');
 /**
+ * @param {Object=} values - The return values
+ * @param {Number} values.version - Set with the witness version
+ * @param {Buffer} values.program - Set with the witness program
+ * @returns {boolean} if this is a p2wpkh output script
+ */
+ Script.prototype.isWitnessProgram = function(values) {
+  if (!values) {
+    values = {};
+  }
+  var buf = this.toBuffer();
+  if (buf.length < 4 || buf.length > 42) {
+    return false;
+  }
+  if (buf[0] !== Opcode.OP_0 && !(buf[0] >= Opcode.OP_1 && buf[0] <= Opcode.OP_16)) {
+    return false;
+  }
+
+  if (buf.length === buf[1] + 2) {
+    values.version = buf[0];
+    values.program = buf.slice(2, buf.length);
+    return true;
+  }
+
+  return false;
+};
+
+/**
  * @returns {boolean} if this is a p2sh output script
@@ -399,0 +426,0 @@ */

package.json

 {
   "name": "bitcore-lib-cash",
-  "version": "8.25.40",
+  "version": "8.25.46",
   "description": "A pure and powerful JavaScript Bitcoin Cash library.",
@@ -38,3 +38,3 @@ "author": "BitPay <[e-mail]>",
   "dependencies": {
-    "bitcore-lib": "^8.25.40",
+    "bitcore-lib": "^8.25.46",
     "bn.js": "=4.11.8",
@@ -49,3 +49,3 @@ "bs58": "^4.0.1",
     "base-x": "=3.0.4",
-    "bitcore-build": "^8.25.40",
+    "bitcore-build": "^8.25.46",
     "brfs": "^2.0.1",
@@ -57,3 +57,3 @@ "chai": "^4.2.0",
   "license": "MIT",
-  "gitHead": "8e85cb3233fade87e809ac4ef6852b9917f51d4a"
+  "gitHead": "17c02f181ba8f96b408951bb511549b0b41b4607"
 }

test/opcode.js

@@ -96,4 +96,4 @@ 'use strict';
   describe('@map', function() {
-    it('should have a map containing 125 elements', function() {
-      _.size(Opcode.map).should.equal(125);
+    it('should have a map containing 141 elements', function() {
+      _.size(Opcode.map).should.equal(141);
     });
@@ -100,0 +100,0 @@ });

test/script/interpreter.js

@@ -7,5 +7,7 @@ 'use strict';
 var Transaction = bitcore.Transaction;
+var Output = bitcore.Transaction.Output;
 var PrivateKey = bitcore.PrivateKey;
 var Script = bitcore.Script;
 var BN = bitcore.crypto.BN;
+var BufferReader = bitcore.encoding.BufferReader;
 var BufferWriter = bitcore.encoding.BufferWriter;
@@ -18,2 +20,3 @@ var Opcode = bitcore.Opcode;
 var tx_invalid = require('../data/bitcoind/tx_invalid');
+var vmb_tests = require('../data/libauth/vmb_tests');
 
@@ -29,3 +32,5 @@ //the script string format used in bitcoind data tests
     }
-
+    if (token === '-1') {
+      token = '1NEGATE';
+    }
     var opstr;
@@ -225,2 +230,15 @@ var opcodenum;
     }
+
+    if (flagstr.indexOf('64_BIT_INTEGERS') !== -1) {
+      flags = flags | Interpreter.SCRIPT_64_BIT_INTEGERS;
+    }
+
+    if (flagstr.indexOf('INPUT_SIGCHECKS') !== -1) {
+      flags = flags | Interpreter.SCRIPT_VERIFY_INPUT_SIGCHECKS;
+    }
+
+    if (flagstr.indexOf('NATIVE_INTROSPECTION') !== -1) {
+      flags = flags | Interpreter.SCRIPT_NATIVE_INTROSPECTION;
+    }
+
     return flags;
@@ -257,3 +275,3 @@ };
       script: scriptPubkey,
-      satoshis: inputAmount, 
+      satoshis: inputAmount,
     }));
@@ -307,2 +325,28 @@ var idbuf = credtx.id;
   });
+  describe('libauth vmb evaluation fixtures', () => {
+    const flags = getFlags('P2SH CLEANSTACK MINIMALDATA VERIFY_CHECKLOCKTIMEVERIFY NATIVE_INTROSPECTION 64_BIT_INTEGERS');
+    const getOutputsFromHex = outputsHex => {
+      const reader = new BufferReader(Buffer.from(outputsHex,'hex'));
+      const numOutputs = reader.readVarintNum();
+      const outputs = new Array(numOutputs).fill(1).map(() => Output.fromBufferReader(reader));
+      return outputs;
+    };
+    vmb_tests.forEach(test => {
+      const testId = test[0];
+      const txHex = test[4];
+      const sourceOutputsHex = test[5];
+      const labels = test[6];
+      const inputIndex = test[7] || 0;
+      const tx = new Transaction(txHex);
+      const outputs = getOutputsFromHex(sourceOutputsHex);
+      tx.inputs.forEach((input, index) => input.output = outputs[index]);
+      const scriptSig = tx.inputs[inputIndex].script;
+      const scriptPubkey = tx.inputs[inputIndex].output.script;
+      it(`should pass vmb_tests vector ${testId}`, () => {
+        const valid = Interpreter().verify(scriptSig, scriptPubkey, tx, inputIndex, flags);
+        const expectedValidity = !labels[0].endsWith('invalid');
+        valid.should.equal(expectedValidity);
+      });
+    });
+  });
   describe('bitcoind transaction evaluation fixtures', function() {
@@ -309,0 +353,0 @@ var test_txs = function(set, expected) {

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Improved metrics

Total package byte prevSize

3104637

increased by20.41%

Number of package files

150

increased by0.67%

Lines of code

36361

increased by8.27%

Dependency changes

• Updatedbitcore-lib@^8.25.46