ASN1_TIME_compare

API 概述

ASN1_TIME_compare 是 openssl 中的一个API。该规属于return value check 类型。该规则是使用 AURC 生成的。

规则描述

提示

ASN1_TIME_compare() returns -1 if I<a> is before I<b>, 0 if I<a> equals I<b>, or 1 if I<a> is after I<b>. -2 is returned on error.

信息

标签：return value check

参数下标：N/A

CWE类别：CWE-253

规则代码

import cpp

class OpenSSLFunctionCall extends FunctionCall {
  OpenSSLFunctionCall() {
    this.getTarget().hasName("ASN1_TIME_compare")
  }
}

from OpenSSLFunctionCall call, UnaryOperation uop
where
  uop.getOperator() = "!" and
  uop.getOperand() = call.getAnAccess()
select uop, "This negation checks the return value of ASN1_TIME_compare."