compat.c

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#include "rosdhcp.h"

size_t strlcpy(char *d, const char *s, size_t bufsize)
{
        size_t len = strlen(s);
        size_t ret = len;
        if (bufsize > 0) {
                if (len >= bufsize)
                        len = bufsize-1;
                memcpy(d, s, len);
                d[len] = 0;
        }
        return ret;
}

// not really random :(
u_int32_t arc4random()
{
    static int did_srand = 0;
    u_int32_t ret;

    if (!did_srand) {
        srand(0);
        did_srand = 1;
    }

    ret = rand() << 10 ^ rand();
    return ret;
}


int inet_aton(const char *cp, struct in_addr *inp)
/* inet_addr code from ROS, slightly modified. */
{
    ULONG Octets[4] = {0,0,0,0};
    ULONG i = 0;

    if(!cp)
        return 0;

    while(*cp)
    {
        CHAR c = *cp;
        cp++;

        if(c == '.')
        {
            i++;
            continue;
        }

        if(c < '0' || c > '9')
            return 0;

        Octets[i] *= 10;
        Octets[i] += (c - '0');

        if(Octets[i] > 255)
            return 0;
        }

    inp->S_un.S_addr = (Octets[3] << 24) + (Octets[2] << 16) + (Octets[1] << 8) + Octets[0];
    return 1;
}