//
// Created by xajhuang on 2023/3/21.
//
#include <string.h>
#include "ipaddr.h"

#define BIT_TEST(c, i) ((c[(i) / 8] & (1 << ((i) % 8))) ? 1 : 0)

U32 ipv4_get_network_addr(U32 ipAddr, U32 netmask) {
    return (ipAddr & netmask);
}

U32 ipv4_get_boardcast_addr(U32 ipAddr, U32 netmask) {
    return (ipAddr | netmask);
}

U32 ipv4_network_total_addr(U32 netmask) {
    return (~netmask) + 1;
}

U32 ipv4_mask_to_cidr(const char *netmask) {
    const char *cidr[] = {"128.0.0.0",       "192.0.0.0",       "224.0.0.0",       "240.0.0.0",       "248.0.0.0",
                          "252.0.0.0",       "254.0.0.0",       "255.0.0.0",       "255.128.0.0",     "255.192.0.0",
                          "255.224.0.0",     "255.240.0.0",     "255.248.0.0",     "255.252.0.0",     "255.254.0.0",
                          "255.255.0.0",     "255.255.128.0",   "255.255.192.0",   "255.255.224.0",   "255.255.240.0",
                          "255.255.248.0",   "255.255.252.0",   "255.255.254.0",   "255.255.255.0",   "255.255.255.128",
                          "255.255.255.192", "255.255.255.224", "255.255.255.240", "255.255.255.248", "255.255.255.252",
                          "255.255.255.254", "255.255.255.255"};

    for(int i = 0; i < ARRAY_SIZE(cidr); i++) {
        if(strcmp(cidr[i], netmask) == 0) {
            return i + 1;
        }
    }

    return 0xFF;
}