使用C++的IP到域

Question

我想写一个程序在C++语言，返回一个给定的IP地址(我认为它是反向域名系统)的域名列表。

这是一种类似于BING IP逆向的方法。

我对WinPcap也很熟悉。

我测试了gethostbyaddr()和getaddrinfo()等其他函数，但我真的不能做我想做的事情。

最好的报价是什么？？

Answer 1

// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
if (iResult != 0) {
    printf("WSAStartup failed: %d\n", iResult);
    return 1;
}

host_addr = argv[2];

printf("Calling gethostbyaddr with %s\n", host_addr);
if (bIpv6 == 1) {
    {
        iResult = inet_pton(AF_INET6, host_addr, &addr6);
        if (iResult == 0) {
            printf("The IPv6 address entered must be a legal address\n");
            return 1;
        } else
            remoteHost = gethostbyaddr((char *) &addr6, 16, AF_INET6);
    }
} else {
    addr.s_addr = inet_addr(host_addr);
    if (addr.s_addr == INADDR_NONE) {
        printf("The IPv4 address entered must be a legal address\n");
        return 1;
    } else
        remoteHost = gethostbyaddr((char *) &addr, 4, AF_INET);
}

if (remoteHost == NULL) {
    dwError = WSAGetLastError();
    if (dwError != 0) {
        if (dwError == WSAHOST_NOT_FOUND) {
            printf("Host not found\n");
            return 1;
        } else if (dwError == WSANO_DATA) {
            printf("No data record found\n");
            return 1;
        } else {
            printf("Function failed with error: %ld\n", dwError);
            return 1;
        }
    }