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Code Issues Releases Activity

Complete test solution for CIDR issue

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This commit is contained in:
Pavel Odintsov 2015-02-14 21:01:42 +03:00
parent 2d9a6ecbba
commit 96f3c73120
1 changed files with 20 additions and 3 deletions
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23
tests/test_cidr.cpp
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@ -7,6 +7,16 @@
#include <arpa/inet.h>
#include <iostream>
uint32_t convert_cidr_to_binary_netmask(unsigned int cidr) {
uint32_t binary_netmask = 0xFFFFFFFF;
binary_netmask = binary_netmask << ( 32 - cidr );
// htonl from host byte order to network
// ntohl from network byte order to host
// We need network byte order at output
return htonl(binary_netmask);
}
uint32_t convert_ip_as_string_to_uint(std::string ip) {
struct in_addr ip_addr;
inet_aton(ip.c_str(), &ip_addr);
@ -16,9 +26,16 @@ uint32_t convert_ip_as_string_to_uint(std::string ip) {
}
int main() {
uint32_t network_zero = convert_ip_as_string_to_uint("10.10.10.0");
uint32_t network_200 = convert_ip_as_string_to_uint("10.10.10.200");
uint32_t binary_netmask = convert_cidr_to_binary_netmask(24);
uint32_t generated_subnet_address = network_200 & binary_netmask;
std::cout<<"network byte order"<<std::endl;
std::cout<<"10.10.10.200/24\tnetwork byte order:"<<convert_ip_as_string_to_uint("10.10.10.200")<<" host byte order:"<<ntohl(convert_ip_as_string_to_uint("10.10.10.200"))<<std::endl;
std::cout<<"10.10.10.0/24\tnetwork byte order:" <<convert_ip_as_string_to_uint("10.10.10.0")<<" host byte order:"<<ntohl(convert_ip_as_string_to_uint("10.10.10.0"))<<std::endl;
std::cout<<"10.10.10.200/24\tnetwork byte order:"<<network_200 <<" host byte order:"<<ntohl(network_200)<<std::endl;
std::cout<<"10.10.10.0/24\tnetwork byte order:" <<network_zero<<" host byte order:"<<ntohl(network_zero)<<std::endl;
std::cout<<"generated \tnetwork byte order:" <<generated_subnet_address<<" host byte order:"<<ntohl(generated_subnet_address)<<std::endl;
}