prevent CNAME/PTR parsing from reading data past the response end

[musl] / compat / time32 / timespec_get_time32.c

#include "time32.h"
#include <time.h>
#include <errno.h>
#include <stdint.h>

int __timespec_get_time32(struct timespec32 *ts32, int base)
{
        struct timespec ts;
        int r = timespec_get(&ts, base);
        if (!r) return r;
        if (ts.tv_sec < INT32_MIN || ts.tv_sec > INT32_MAX) {
                errno = EOVERFLOW;
                return 0;
        }
        ts32->tv_sec = ts.tv_sec;
        ts32->tv_nsec = ts.tv_nsec;
        return r;
}