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script: do not pass flags to Script.num.

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This commit is contained in:
Christopher Jeffrey 2017-06-10 01:22:01 -07:00
parent 8893131e08
commit 30b8a458ed
No known key found for this signature in database
GPG Key ID: 8962AB9DE6666BBD
3 changed files with 23 additions and 27 deletions
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9
lib/script/common.js
View File

@ -705,27 +705,24 @@ exports.formatStackASM = function formatStackASM(items, decode) {
/**
* Create a CScriptNum.
* @param {Buffer} value
* @param {Number?} flags - Script standard flags.
* @param {Boolean?} minimal
* @param {Number?} size - Max size in bytes.
* @returns {BN}
* @throws {ScriptError}
*/
exports.num = function num(value, flags, size) {
exports.num = function num(value, minimal, size) {
var result;
assert(Buffer.isBuffer(value));
if (flags == null)
flags = exports.flags.STANDARD_VERIFY_FLAGS;
if (size == null)
size = 4;
if (value.length > size)
throw new exports.ScriptError('UNKNOWN_ERROR', 'Script number overflow.');
if ((flags & exports.flags.VERIFY_MINIMALDATA) && value.length > 0) {
if (minimal && value.length > 0) {
// If the low bits on the last byte are unset,
// fail if the value's second to last byte does
// not have the high bit set. A number can't

39
lib/script/script.js
View File

@ -694,7 +694,7 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
if (stack.length === 0)
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
locktime = Script.num(stack.top(-1), flags, 5);
locktime = Script.num(stack.top(-1), minimal, 5);
if (locktime.cmpn(0) < 0)
throw new ScriptError('NEGATIVE_LOCKTIME', op, ip);
@ -720,7 +720,7 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
if (stack.length === 0)
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
locktime = Script.num(stack.top(-1), flags, 5);
locktime = Script.num(stack.top(-1), minimal, 5);
if (locktime.cmpn(0) < 0)
throw new ScriptError('NEGATIVE_LOCKTIME', op, ip);
@ -882,7 +882,7 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
if (stack.length < 2)
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
num = Script.num(stack.top(-1), flags).toNumber();
num = Script.num(stack.top(-1), minimal).toNumber();
stack.pop();
if (num < 0 || num >= stack.length)
@ -963,7 +963,7 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
if (stack.length < 1)
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
num = Script.num(stack.top(-1), flags);
num = Script.num(stack.top(-1), minimal);
switch (op) {
case opcodes.OP_1ADD:
@ -1024,8 +1024,8 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
if (stack.length < 2)
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
n1 = Script.num(stack.top(-2), flags);
n2 = Script.num(stack.top(-1), flags);
n1 = Script.num(stack.top(-2), minimal);
n2 = Script.num(stack.top(-1), minimal);
switch (op) {
case opcodes.OP_ADD:
@ -1118,9 +1118,9 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
if (stack.length < 3)
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
n1 = Script.num(stack.top(-3), flags);
n2 = Script.num(stack.top(-2), flags);
n3 = Script.num(stack.top(-1), flags);
n1 = Script.num(stack.top(-3), minimal);
n2 = Script.num(stack.top(-2), minimal);
n3 = Script.num(stack.top(-1), minimal);
val = n2.cmp(n1) <= 0 && n1.cmp(n3) < 0;
@ -1223,7 +1223,7 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
if (stack.length < i)
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
n = Script.num(stack.top(-i), flags).toNumber();
n = Script.num(stack.top(-i), minimal).toNumber();
ikey2 = n + 2;
if (!(n >= 0 && n <= consensus.MAX_MULTISIG_PUBKEYS))
@ -1241,7 +1241,7 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
if (stack.length < i)
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
m = Script.num(stack.top(-i), flags).toNumber();
m = Script.num(stack.top(-i), minimal).toNumber();
if (!(m >= 0 && m <= n))
throw new ScriptError('SIG_COUNT', op, ip);
@ -1334,8 +1334,8 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
v1 = stack.top(-3);
v2 = Script.num(stack.top(-2), flags).toNumber();
v3 = Script.num(stack.top(-1), flags).toNumber();
v2 = Script.num(stack.top(-2), minimal).toNumber();
v3 = Script.num(stack.top(-1), minimal).toNumber();
if (v2 < 0 || v3 < v2)
throw new ScriptError('UNKNOWN_ERROR', 'String out of range.');
@ -1358,7 +1358,7 @@ Script.prototype.execute = function execute(stack, flags, tx, index, value, vers
throw new ScriptError('INVALID_STACK_OPERATION', op, ip);
v1 = stack.top(-2);
v2 = Script.num(stack.top(-1), flags).toNumber();
v2 = Script.num(stack.top(-1), minimal).toNumber();
if (v2 < 0)
throw new ScriptError('UNKNOWN_ERROR', 'String size out of range.');
@ -1470,14 +1470,14 @@ Script.bool = function bool(value) {
/**
* Create a CScriptNum.
* @param {Buffer} value
* @param {Number?} flags - Script standard flags.
* @param {Boolean?} minimal
* @param {Number?} size - Max size in bytes.
* @returns {BN}
* @throws {ScriptError}
*/
Script.num = function num(value, flags, size) {
return common.num(value, flags, size);
Script.num = function num(value, minimal, size) {
return common.num(value, minimal, size);
};
/**
@ -2498,7 +2498,6 @@ Script.prototype.getCoinbaseHeight = function getCoinbaseHeight() {
*/
Script.getCoinbaseHeight = function getCoinbaseHeight(raw) {
var flags = Script.flags.STANDARD_VERIFY_FLAGS;
var data, height, op;
if (raw.length === 0)
@ -2524,7 +2523,7 @@ Script.getCoinbaseHeight = function getCoinbaseHeight(raw) {
// Deserialize the height.
try {
height = Script.num(data, flags, 6);
height = Script.num(data, true, 6);
} catch (e) {
return -1;
}
@ -2689,7 +2688,7 @@ Script.prototype.getNumber = function getNumber(i) {
if (!op || !op.data || op.data.length > 5)
return null;
return Script.num(op.data, Script.flags.VERIFY_NONE, 5);
return Script.num(op.data, false, 5);
};
/**

2
lib/script/witness.js
View File

@ -511,7 +511,7 @@ Witness.prototype.getNumber = function getNumber(i) {
var item = this.items[i];
if (!item || item.length > 5)
return;
return common.num(item, common.flags.VERIFY_NONE, 5);
return common.num(item, false, 5);
};
/**