#include "inet_pton.h"

#include "wireless.h"

int inet_pton4(const char *src, unsigned char *dst) {
    static const char digits[] = "0123456789";
    int saw_digit, octets, ch;
    unsigned char tmp[INADDRSZ], *tp;

    saw_digit = 0;
    octets = 0;
    tp = tmp;
    *tp = 0;
    while ((ch = *src++) != '\0') {
        const char *pch;

        if ((pch = strchr(digits, ch)) != NULL) {
            unsigned int val = *tp * 10 + (unsigned int)(pch - digits);

            if (saw_digit && *tp == 0)
                return (0);
            if (val > 255)
                return (0);
            *tp = (unsigned char)val;
            if (!saw_digit) {
                if (++octets > 4)
                    return (0);
                saw_digit = 1;
            }
        } else if (ch == '.' && saw_digit) {
            if (octets == 4)
                return (0);
            *++tp = 0;
            saw_digit = 0;
        } else
            return (0);
    }
    if (octets < 4)
        return (0);
    memcpy(dst, tmp, INADDRSZ);
    return (1);
}