如何比较IP地址 [英] How to compare ip address

问题描述

 CString  ip_start = ctlList.GetItemText(row, s_cnIpFilterRangeStart);
     
 CString ip_end = ctlList.GetItemText(row, s_cnIpFilterRangeEnd);
here i am getting ip address and storing into strings.
when i am giving like below i should through some waringing
ip_start = 11.1.1.1
ip_end  = 1.1.1.1
could you please suggest me here

我的尝试：

What I have tried:

rightnow i have checked only ip validation it means when user gives IP address as 111111 then i am thorwing as error
but now my request is need compare both

for验证我在下面做了一个

for validation i did below one

ValidateIP(CString input)
{
    int retVal = FALSE;
    CString m_LocalIPaddress("0.0.0.0");
    CString m_BroadCastIPaddress("255.255.255.255");
    std::string s_input(CW2A(input.GetString()));
    std::regex pattern("[0-9][0-9a-zA-Z_!@#$%^&*()+=,.<>':;]*");
    if ((input.Compare(m_LocalIPaddress) == 0) || (input.Compare(m_BroadCastIPaddress) == 0))
    {
        return EParseResult::ENUM_NOT_SUPPORTED;
    }
    else if (std::regex_match(s_input, pattern) || (input.Find(_T(":"), 0) != RET_FAILURE))
    {
        if (input.Find(_T(".")) != RET_FAILURE)
        {
            struct sockaddr_in sa;
            retVal = InetPton(AF_INET, input, &(sa.sin_addr));
            if (retVal == RET_VALID_IP)
            {
                return EParseResult::ENUM_VALID_IPV4;
            }
        }
        else if (input.Find(_T(":")) != RET_FAILURE)
        {
            struct sockaddr_in6 sa;
            retVal = InetPton(AF_INET6, input, &(sa.sin6_addr));
            if (retVal == RET_VALID_IP)
            {
                return EParseResult::ENUM_VALID_IPV6;
            }
        }
    }
    else
    {
       return EParseResult::ENUM_IS_FQDN;
    }

所以同样的方式我对cck开始可以减少tan end ip

so same way i ave to cck start sould is less tan end ip

推荐答案

％^& *（）+ =，。<>'：;] *）;
if（（input.Compare（m_LocalIPaddress）== 0）| |（input.Compare（m_BroadCastIPaddress）== 0））
{
返回EParseResult :: ENUM_NOT_SUPPORTED;
}
else if（std :: regex_match（s_input，pattern）| |（input.Find（_T（：），0）！= RET_FAILURE））
{
if（input.Find（_T（。））！= RET_FAILURE）
{
struct sockaddr_in sa;
retVal = InetPton（AF_INET，input，&（sa.sin_addr））;
if（retVal == RET_VALID_IP）
{
返回EParseResult :: ENUM_VALID_IPV4;
}
}
else if（input.Find（_T（：））！= RET_FAILURE）
{
struct sockaddr_in6 sa ;
retVal = InetPton（AF_INET6，输入和&（sa.sin6_addr））;
if（retVal == RET_VALID_IP）
{
返回EParseResult :: ENUM_VALID_IPV6;
}
}
}
其他
{
返回EParseResult :: ENUM_IS_FQDN;
}

%^&*()+=,.<>':;]*"); if ((input.Compare(m_LocalIPaddress) == 0) || (input.Compare(m_BroadCastIPaddress) == 0)) { return EParseResult::ENUM_NOT_SUPPORTED; } else if (std::regex_match(s_input, pattern) || (input.Find(_T(":"), 0) != RET_FAILURE)) { if (input.Find(_T(".")) != RET_FAILURE) { struct sockaddr_in sa; retVal = InetPton(AF_INET, input, &(sa.sin_addr)); if (retVal == RET_VALID_IP) { return EParseResult::ENUM_VALID_IPV4; } } else if (input.Find(_T(":")) != RET_FAILURE) { struct sockaddr_in6 sa; retVal = InetPton(AF_INET6, input, &(sa.sin6_addr)); if (retVal == RET_VALID_IP) { return EParseResult::ENUM_VALID_IPV6; } } } else { return EParseResult::ENUM_IS_FQDN; }

所以同样的方式我开始使用cck开始的时候更少了晒黑了

so same way i ave to cck start sould is less tan end ip

可以与dword类型进行比较。

例如，你可以使用跟随宏。

It can be compared with dword type.
For example, you can use follow macros.

#define str2dword(sip, ip) { \
	DWORD _2, _3, _4; \
	_stscanf_s(sip, _T("%d.%d.%d.%d"), &ip, &_2, &_3, &_4);	\
	ip = ip | (_2 << 8);			\
	ip = ip | (_3 << 16);			\
	ip = ip | (_4 << 24);			\
}
#define I4V2IP(a, b, c, d) ((DWORD)(a) | ((DWORD)(b)<<8) | ((DWORD)(c)<<16) | ((DWORD)(d)<<24))

从IP字符串中提取octects（字节）（你可能会发现许多例子只是谷歌搜索 [ ^ ]）然后比较它们。

Extract the octects (bytes) from the IP strings (you may find many examples just Googling[^]) and then compare them.

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