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Differential D1101 Diff 3002 src/script/interpreter.cpp

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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_LEFT || opcode == OP_RIGHT || opcode == OP_INVERT || if (opcode == OP_RIGHT || opcode == OP_INVERT || opcode == OP_2MUL ||
opcode == OP_2MUL || opcode == OP_2DIV || opcode == OP_MUL || opcode == OP_2DIV || opcode == OP_MUL || opcode == OP_LSHIFT ||
opcode == OP_LSHIFT || opcode == OP_RSHIFT) { 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 933 Lines • ▼ Show 20 Lines try {
valtype vchOut1, vchOut2; valtype vchOut1, vchOut2;
vchOut1.insert(vchOut1.end(), vch.begin(), vch.begin() + nPosition); vchOut1.insert(vchOut1.end(), vch.begin(), vch.begin() + nPosition);
vchOut2.insert(vchOut2.end(), vch.begin() + nPosition, vch.end()); vchOut2.insert(vchOut2.end(), vch.begin() + nPosition, vch.end());
stack.emplace_back(move(vchOut1)); stack.emplace_back(move(vchOut1));
stack.emplace_back(move(vchOut2)); stack.emplace_back(move(vchOut2));
} }
} break; } break;
//
// Conversion operations
//
case OP_BIN2NUM: {
// (in -- out)
if (stack.size() < 1) {
return set_error(
serror, SCRIPT_ERR_INVALID_STACK_OPERATION);
}
valtype bin = stacktop(-1);
std::reverse(bin.begin(), bin.end()); // big endian to little endian conversion
CScriptNum num(bin, false);
if (num > (INT_MAX>>1) || num < (INT_MIN>>1)) {
return set_error(serror, SCRIPT_ERR_INVALID_BIN2NUM_OPERATION);
}
stack.pop_back();
stack.push_back(num.getvch());
} 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);
} }
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