class OpenSSL::X509::CRL

static VALUE
ossl_x509crl_initialize(int argc, VALUE *argv, VALUE self)
{
    BIO *in;
    X509_CRL *crl, *x = DATA_PTR(self);
    VALUE arg;

    if (rb_scan_args(argc, argv, "01", &arg) == 0) {
        return self;
    }
    arg = ossl_to_der_if_possible(arg);
    in = ossl_obj2bio(&arg);
    crl = PEM_read_bio_X509_CRL(in, &x, NULL, NULL);
    DATA_PTR(self) = x;
    if (!crl) {
        OSSL_BIO_reset(in);
        crl = d2i_X509_CRL_bio(in, &x);
        DATA_PTR(self) = x;
    }
    BIO_free(in);
    if (!crl) ossl_raise(eX509CRLError, NULL);

    return self;
}

static VALUE
ossl_x509crl_add_extension(VALUE self, VALUE extension)
{
    X509_CRL *crl;
    X509_EXTENSION *ext;

    GetX509CRL(self, crl);
    ext = GetX509ExtPtr(extension);
    if (!X509_CRL_add_ext(crl, ext, -1)) {
        ossl_raise(eX509CRLError, NULL);
    }

    return extension;
}

static VALUE
ossl_x509crl_add_revoked(VALUE self, VALUE revoked)
{
    X509_CRL *crl;
    X509_REVOKED *rev;

    GetX509CRL(self, crl);
    rev = DupX509RevokedPtr(revoked);
    if (!X509_CRL_add0_revoked(crl, rev)) { /* NO DUP - don't free! */
        X509_REVOKED_free(rev);
        ossl_raise(eX509CRLError, "X509_CRL_add0_revoked");
    }
    X509_CRL_sort(crl);

    return revoked;
}

static VALUE
ossl_x509crl_get_extensions(VALUE self)
{
    X509_CRL *crl;
    int count, i;
    X509_EXTENSION *ext;
    VALUE ary;

    GetX509CRL(self, crl);
    count = X509_CRL_get_ext_count(crl);
    if (count < 0) {
        OSSL_Debug("count < 0???");
        return rb_ary_new();
    }
    ary = rb_ary_new2(count);
    for (i=0; i<count; i++) {
        ext = X509_CRL_get_ext(crl, i); /* NO DUP - don't free! */
        rb_ary_push(ary, ossl_x509ext_new(ext));
    }

    return ary;
}

static VALUE
ossl_x509crl_set_extensions(VALUE self, VALUE ary)
{
    X509_CRL *crl;
    X509_EXTENSION *ext;
    long i;

    Check_Type(ary, T_ARRAY);
    /* All ary members should be X509 Extensions */
    for (i=0; i<RARRAY_LEN(ary); i++) {
        OSSL_Check_Kind(RARRAY_AREF(ary, i), cX509Ext);
    }
    GetX509CRL(self, crl);
    while ((ext = X509_CRL_delete_ext(crl, 0)))
        X509_EXTENSION_free(ext);
    for (i=0; i<RARRAY_LEN(ary); i++) {
        ext = GetX509ExtPtr(RARRAY_AREF(ary, i)); /* NO NEED TO DUP */
        if (!X509_CRL_add_ext(crl, ext, -1)) {
            ossl_raise(eX509CRLError, NULL);
        }
    }

    return ary;
}

static VALUE
ossl_x509crl_get_issuer(VALUE self)
{
    X509_CRL *crl;

    GetX509CRL(self, crl);

    return ossl_x509name_new(X509_CRL_get_issuer(crl)); /* NO DUP - don't free */
}

static VALUE
ossl_x509crl_set_issuer(VALUE self, VALUE issuer)
{
    X509_CRL *crl;

    GetX509CRL(self, crl);

    if (!X509_CRL_set_issuer_name(crl, GetX509NamePtr(issuer))) { /* DUPs name */
        ossl_raise(eX509CRLError, NULL);
    }
    return issuer;
}

static VALUE
ossl_x509crl_get_last_update(VALUE self)
{
    X509_CRL *crl;

    GetX509CRL(self, crl);

    return asn1time_to_time(X509_CRL_get0_lastUpdate(crl));
}

static VALUE
ossl_x509crl_set_last_update(VALUE self, VALUE time)
{
    X509_CRL *crl;
    ASN1_TIME *asn1time;

    GetX509CRL(self, crl);
    asn1time = ossl_x509_time_adjust(NULL, time);
    if (!X509_CRL_set_lastUpdate(crl, asn1time)) {
        ASN1_TIME_free(asn1time);
        ossl_raise(eX509CRLError, "X509_CRL_set_lastUpdate");
    }
    ASN1_TIME_free(asn1time);

    return time;
}

static VALUE
ossl_x509crl_get_next_update(VALUE self)
{
    X509_CRL *crl;

    GetX509CRL(self, crl);

    return asn1time_to_time(X509_CRL_get0_nextUpdate(crl));
}

static VALUE
ossl_x509crl_set_next_update(VALUE self, VALUE time)
{
    X509_CRL *crl;
    ASN1_TIME *asn1time;

    GetX509CRL(self, crl);
    asn1time = ossl_x509_time_adjust(NULL, time);
    if (!X509_CRL_set_nextUpdate(crl, asn1time)) {
        ASN1_TIME_free(asn1time);
        ossl_raise(eX509CRLError, "X509_CRL_set_nextUpdate");
    }
    ASN1_TIME_free(asn1time);

    return time;
}

static VALUE
ossl_x509crl_get_revoked(VALUE self)
{
    X509_CRL *crl;
    int i, num;
    X509_REVOKED *rev;
    VALUE ary, revoked;

    GetX509CRL(self, crl);
    num = sk_X509_REVOKED_num(X509_CRL_get_REVOKED(crl));
    if (num < 0) {
        OSSL_Debug("num < 0???");
        return rb_ary_new();
    }
    ary = rb_ary_new2(num);
    for(i=0; i<num; i++) {
        /* NO DUP - don't free! */
        rev = sk_X509_REVOKED_value(X509_CRL_get_REVOKED(crl), i);
        revoked = ossl_x509revoked_new(rev);
        rb_ary_push(ary, revoked);
    }

    return ary;
}

static VALUE
ossl_x509crl_set_revoked(VALUE self, VALUE ary)
{
    X509_CRL *crl;
    X509_REVOKED *rev;
    STACK_OF(X509_REVOKED) *sk;
    long i;

    Check_Type(ary, T_ARRAY);
    /* All ary members should be X509 Revoked */
    for (i=0; i<RARRAY_LEN(ary); i++) {
        OSSL_Check_Kind(RARRAY_AREF(ary, i), cX509Rev);
    }
    GetX509CRL(self, crl);
    if ((sk = X509_CRL_get_REVOKED(crl))) {
        while ((rev = sk_X509_REVOKED_pop(sk)))
            X509_REVOKED_free(rev);
    }
    for (i=0; i<RARRAY_LEN(ary); i++) {
        rev = DupX509RevokedPtr(RARRAY_AREF(ary, i));
        if (!X509_CRL_add0_revoked(crl, rev)) { /* NO DUP - don't free! */
            X509_REVOKED_free(rev);
            ossl_raise(eX509CRLError, "X509_CRL_add0_revoked");
        }
    }
    X509_CRL_sort(crl);

    return ary;
}

static VALUE
ossl_x509crl_sign(VALUE self, VALUE key, VALUE digest)
{
    X509_CRL *crl;
    EVP_PKEY *pkey;
    const EVP_MD *md;

    GetX509CRL(self, crl);
    pkey = GetPrivPKeyPtr(key); /* NO NEED TO DUP */
    md = GetDigestPtr(digest);
    if (!X509_CRL_sign(crl, pkey, md)) {
        ossl_raise(eX509CRLError, NULL);
    }

    return self;
}

static VALUE
ossl_x509crl_get_signature_algorithm(VALUE self)
{
    X509_CRL *crl;
    const X509_ALGOR *alg;
    BIO *out;

    GetX509CRL(self, crl);
    if (!(out = BIO_new(BIO_s_mem()))) {
        ossl_raise(eX509CRLError, NULL);
    }
    X509_CRL_get0_signature(crl, NULL, &alg);
    if (!i2a_ASN1_OBJECT(out, alg->algorithm)) {
        BIO_free(out);
        ossl_raise(eX509CRLError, NULL);
    }

    return ossl_membio2str(out);
}

static VALUE
ossl_x509crl_to_der(VALUE self)
{
    X509_CRL *crl;
    BIO *out;

    GetX509CRL(self, crl);
    if (!(out = BIO_new(BIO_s_mem()))) {
        ossl_raise(eX509CRLError, NULL);
    }
    if (!i2d_X509_CRL_bio(out, crl)) {
        BIO_free(out);
        ossl_raise(eX509CRLError, NULL);
    }

    return ossl_membio2str(out);
}

static VALUE
ossl_x509crl_to_pem(VALUE self)
{
    X509_CRL *crl;
    BIO *out;

    GetX509CRL(self, crl);
    if (!(out = BIO_new(BIO_s_mem()))) {
        ossl_raise(eX509CRLError, NULL);
    }
    if (!PEM_write_bio_X509_CRL(out, crl)) {
        BIO_free(out);
        ossl_raise(eX509CRLError, NULL);
    }

    return ossl_membio2str(out);
}

static VALUE
ossl_x509crl_to_text(VALUE self)
{
    X509_CRL *crl;
    BIO *out;

    GetX509CRL(self, crl);
    if (!(out = BIO_new(BIO_s_mem()))) {
        ossl_raise(eX509CRLError, NULL);
    }
    if (!X509_CRL_print(out, crl)) {
        BIO_free(out);
        ossl_raise(eX509CRLError, NULL);
    }

    return ossl_membio2str(out);
}

static VALUE
ossl_x509crl_verify(VALUE self, VALUE key)
{
    X509_CRL *crl;
    EVP_PKEY *pkey;

    GetX509CRL(self, crl);
    pkey = GetPKeyPtr(key);
    ossl_pkey_check_public_key(pkey);
    switch (X509_CRL_verify(crl, pkey)) {
      case 1:
        return Qtrue;
      case 0:
        ossl_clear_error();
        return Qfalse;
      default:
        ossl_raise(eX509CRLError, NULL);
    }
}

static VALUE
ossl_x509crl_get_version(VALUE self)
{
    X509_CRL *crl;
    long ver;

    GetX509CRL(self, crl);
    ver = X509_CRL_get_version(crl);

    return LONG2NUM(ver);
}

static VALUE
ossl_x509crl_set_version(VALUE self, VALUE version)
{
    X509_CRL *crl;
    long ver;

    if ((ver = NUM2LONG(version)) < 0) {
        ossl_raise(eX509CRLError, "version must be >= 0!");
    }
    GetX509CRL(self, crl);
    if (!X509_CRL_set_version(crl, ver)) {
        ossl_raise(eX509CRLError, NULL);
    }

    return version;
}