Page MenuHomePhabricator
Differential D1099 Diff 2876 src/script/interpreter.cpp

Changeset View

Standalone View

View Options

src/script/interpreter.cpp

Show First 20 Lines • Show All 329 Lines • ▼ Show 20 Lines try {
return set_error(serror, SCRIPT_ERR_PUSH_SIZE); return set_error(serror, SCRIPT_ERR_PUSH_SIZE);
} }
// Note how OP_RESERVED does not count towards the opcode limit. // Note how OP_RESERVED does not count towards the opcode limit.
if (opcode > OP_16 && ++nOpCount > MAX_OPS_PER_SCRIPT) { if (opcode > OP_16 && ++nOpCount > MAX_OPS_PER_SCRIPT) {
return set_error(serror, SCRIPT_ERR_OP_COUNT); return set_error(serror, SCRIPT_ERR_OP_COUNT);
} }
if (opcode == OP_SUBSTR || opcode == OP_LEFT || opcode == OP_RIGHT || if (opcode == OP_LEFT || opcode == OP_RIGHT || opcode == OP_INVERT ||
opcode == OP_INVERT || opcode == OP_2MUL || opcode == OP_2DIV || opcode == OP_2MUL || opcode == OP_2DIV || opcode == OP_MUL ||
opcode == OP_MUL || opcode == OP_LSHIFT || opcode == OP_RSHIFT) { opcode == OP_LSHIFT || opcode == OP_RSHIFT) {
// Disabled opcodes. // Disabled opcodes.
return set_error(serror, SCRIPT_ERR_DISABLED_OPCODE); return set_error(serror, SCRIPT_ERR_DISABLED_OPCODE);
} }
if (fExec && 0 <= opcode && opcode <= OP_PUSHDATA4) { if (fExec && 0 <= opcode && opcode <= OP_PUSHDATA4) {
if (fRequireMinimal && if (fRequireMinimal &&
!CheckMinimalPush(vchPushValue, opcode)) { !CheckMinimalPush(vchPushValue, opcode)) {
return set_error(serror, SCRIPT_ERR_MINIMALDATA); return set_error(serror, SCRIPT_ERR_MINIMALDATA);
▲ Show 20 Lines • Show All 897 Lines • ▼ Show 20 Lines try {
valtype& vch2 = stacktop(-1); valtype& vch2 = stacktop(-1);
if (vch1.size() + vch2.size() > MAX_SCRIPT_ELEMENT_SIZE) { if (vch1.size() + vch2.size() > MAX_SCRIPT_ELEMENT_SIZE) {
return set_error(serror, SCRIPT_ERR_PUSH_SIZE); return set_error(serror, SCRIPT_ERR_PUSH_SIZE);
} }
vch1.insert(vch1.end(), vch2.begin(), vch2.end()); vch1.insert(vch1.end(), vch2.begin(), vch2.end());
stack.pop_back(); stack.pop_back();
} break; } break;
case OP_SPLIT: {
// (in position -- x1 x2)
if (stack.size() < 2) {
return set_error(
serror, SCRIPT_ERR_INVALID_STACK_OPERATION);
}
valtype vch = stacktop(-2);
int64_t nPosition = CScriptNum(stacktop(-1), fRequireMinimal).getint();
// if nPosition is less than 0 or is larger than the input then throw error
if (nPosition < 0 || static_cast<size_t>(nPosition) > vch.size()) {
return set_error(
serror, SCRIPT_ERR_INVALID_SPLIT_RANGE);
}
stack.pop_back();
stack.pop_back();
// initialize outputs
if (nPosition == 0) {
stack.push_back(valtype());
stack.push_back(vch);
}
else if (static_cast<size_t>(nPosition) == vch.size()) {
stack.push_back(vch);
stack.push_back(valtype());
}
else {
valtype vchOut1, vchOut2;
vchOut1.insert(vchOut1.end(), vch.begin(), vch.begin() + nPosition);
vchOut2.insert(vchOut2.end(), vch.begin() + nPosition, vch.end());
stack.emplace_back(move(vchOut1));
stack.emplace_back(move(vchOut2));
}
} break;
default: default:
return set_error(serror, SCRIPT_ERR_BAD_OPCODE); return set_error(serror, SCRIPT_ERR_BAD_OPCODE);
} }
// Size limits // Size limits
if (stack.size() + altstack.size() > 1000) { if (stack.size() + altstack.size() > 1000) {
return set_error(serror, SCRIPT_ERR_STACK_SIZE); return set_error(serror, SCRIPT_ERR_STACK_SIZE);
} }
▲ Show 20 Lines • Show All 437 Lines • Show Last 20 Lines