// SPDX-License-Identifier: GPL-2.0
#include "aolib.h"
#include <string.h>

void randomize_buffer(void *buf, size_t buflen)
{
        int *p = (int *)buf;
        size_t words = buflen / sizeof(int);
        size_t leftover = buflen % sizeof(int);

        if (!buflen)
                return;

        while (words--)
                *p++ = rand();

        if (leftover) {
                int tmp = rand();

                memcpy(buf + buflen - leftover, &tmp, leftover);
        }
}

__printf(3, 4) int test_echo(const char *fname, bool append,
                             const char *fmt, ...)
{
        size_t len, written;
        va_list vargs;
        char *msg;
        FILE *f;

        f = fopen(fname, append ? "a" : "w");
        if (!f)
                return -errno;

        va_start(vargs, fmt);
        msg = test_snprintf(fmt, vargs);
        va_end(vargs);
        if (!msg) {
                fclose(f);
                return -1;
        }
        len = strlen(msg);
        written = fwrite(msg, 1, len, f);
        fclose(f);
        free(msg);
        return written == len ? 0 : -1;
}

const struct sockaddr_in6 addr_any6 = {
        .sin6_family    = AF_INET6,
};

const struct sockaddr_in addr_any4 = {
        .sin_family     = AF_INET,
};