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src/script/interpreter.cpp
| Show First 20 Lines • Show All 133 Lines • ▼ Show 20 Lines | try { | ||||
| return set_error(serror, ScriptError::PUSH_SIZE); | return set_error(serror, ScriptError::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, ScriptError::OP_COUNT); | return set_error(serror, ScriptError::OP_COUNT); | ||||
| } | } | ||||
| // Some opcodes are disabled. | // Some opcodes are disabled (CVE-2010-5137). | ||||
| if (IsOpcodeDisabled(opcode, flags)) { | if (IsOpcodeDisabled(opcode, flags)) { | ||||
| return set_error(serror, ScriptError::DISABLED_OPCODE); | return set_error(serror, ScriptError::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, ScriptError::MINIMALDATA); | return set_error(serror, ScriptError::MINIMALDATA); | ||||
| ▲ Show 20 Lines • Show All 1,556 Lines • ▼ Show 20 Lines | bool VerifyScript(const CScript &scriptSig, const CScript &scriptPubKey, | ||||
| } | } | ||||
| if ((flags & SCRIPT_VERIFY_SIGPUSHONLY) != 0 && !scriptSig.IsPushOnly()) { | if ((flags & SCRIPT_VERIFY_SIGPUSHONLY) != 0 && !scriptSig.IsPushOnly()) { | ||||
| return set_error(serror, ScriptError::SIG_PUSHONLY); | return set_error(serror, ScriptError::SIG_PUSHONLY); | ||||
| } | } | ||||
| ScriptExecutionMetrics metrics = {}; | ScriptExecutionMetrics metrics = {}; | ||||
| // scriptSig and scriptPubKey must be evaluated sequentially on the same | |||||
| // stack rather than being simply concatenated (see CVE-2010-5141) | |||||
| std::vector<valtype> stack, stackCopy; | std::vector<valtype> stack, stackCopy; | ||||
| if (!EvalScript(stack, scriptSig, flags, checker, metrics, serror)) { | if (!EvalScript(stack, scriptSig, flags, checker, metrics, serror)) { | ||||
| // serror is set | // serror is set | ||||
| return false; | return false; | ||||
| } | } | ||||
| if (flags & SCRIPT_VERIFY_P2SH) { | if (flags & SCRIPT_VERIFY_P2SH) { | ||||
| stackCopy = stack; | stackCopy = stack; | ||||
| } | } | ||||
| ▲ Show 20 Lines • Show All 93 Lines • Show Last 20 Lines | |||||