res_hostalias(const res_state statp, const char *name, char *dst, size_t siz) {
	char *file, *cp1, *cp2;
	char buf[BUFSIZ];
	FILE *fp;

	if (statp->options & RES_NOALIASES)
		return (NULL);
	file = getenv("HOSTALIASES");
	if (file == NULL || (fp = fopen(file, "rce")) == NULL)
		return (NULL);
	setbuf(fp, NULL);
	buf[sizeof(buf) - 1] = '\0';
	while (fgets(buf, sizeof(buf), fp)) {
		for (cp1 = buf; *cp1 && !isspace(*cp1); ++cp1)
			;
		if (!*cp1)
			break;
		*cp1 = '\0';
		if (ns_samename(buf, name) == 1) {
			while (isspace(*++cp1))
				;
			if (!*cp1)
				break;
			for (cp2 = cp1 + 1; *cp2 && !isspace(*cp2); ++cp2)
				;
			*cp2 = '\0';
			strncpy(dst, cp1, siz - 1);
			dst[siz - 1] = '\0';
			fclose(fp);
			return (dst);
		}
	}
	fclose(fp);
	return (NULL);
}
res_hostalias(const res_state statp, const char *name, char *dst, size_t siz) {
	char *file, *cp1, *cp2;
	char buf[BUFSIZ];
	FILE *fp;

	if (statp->options & RES_NOALIASES)
		return (NULL);
	file = getenv("HOSTALIASES");
	if (file == NULL || (fp = fopen(file, "rce")) == NULL)
		return (NULL);
	setbuf(fp, NULL);
	buf[sizeof(buf) - 1] = '\0';
	while (fgets(buf, sizeof(buf), fp)) {
		for (cp1 = buf; *cp1 && !isspace(*cp1); ++cp1)
			;
		if (!*cp1)
			break;
		*cp1 = '\0';
		if (ns_samename(buf, name) == 1) {
			while (isspace(*++cp1))
				;
			if (!*cp1)
				break;
			for (cp2 = cp1 + 1; *cp2 && !isspace(*cp2); ++cp2)
				;
			*cp2 = '\0';
			strncpy(dst, cp1, siz - 1);
			dst[siz - 1] = '\0';
			fclose(fp);
			return (dst);
		}
	}
	fclose(fp);
	return (NULL);
}