int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
{
    char *v;
    int gmt = 0;
    int i;
    int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
    char *f = NULL;
    int f_len = 0;

    i = tm->length;
    v = (char *)tm->data;

    if (i < 12)
        goto err;
    if (v[i - 1] == 'Z')
        gmt = 1;
    for (i = 0; i < 12; i++)
        if ((v[i] > '9') || (v[i] < '0'))
            goto err;
    y = (v[0] - '0') * 1000 + (v[1] - '0') * 100
        + (v[2] - '0') * 10 + (v[3] - '0');
    M = (v[4] - '0') * 10 + (v[5] - '0');
    if ((M > 12) || (M < 1))
        goto err;
    d = (v[6] - '0') * 10 + (v[7] - '0');
    h = (v[8] - '0') * 10 + (v[9] - '0');
    m = (v[10] - '0') * 10 + (v[11] - '0');
    if (tm->length >= 14 &&
        (v[12] >= '0') && (v[12] <= '9') &&
        (v[13] >= '0') && (v[13] <= '9')) {
        s = (v[12] - '0') * 10 + (v[13] - '0');
        /* Check for fractions of seconds. */
        if (tm->length >= 15 && v[14] == '.') {
            int l = tm->length;
            f = &v[14];         /* The decimal point. */
            f_len = 1;
            while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
                ++f_len;
        }
    }

    if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
                   _asn1_mon[M - 1], d, h, m, s, f_len, f, y,
                   (gmt) ? " GMT" : "") <= 0)
        return (0);
    else
        return (1);
 err:
    BIO_write(bp, "Bad time value", 14);
    return (0);
}