/* asn1t.h */
/*
 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
 * 2006.
 */
/* ====================================================================
 * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

/* Internal ASN1 structures and functions: not for application use */

int asn1_utctime_to_tm(struct tm *tm, const ASN1_UTCTIME *d);
int asn1_generalizedtime_to_tm(struct tm *tm, const ASN1_GENERALIZEDTIME *d);

/* ASN1 print context structure */

struct asn1_pctx_st {
    unsigned long flags;
    unsigned long nm_flags;
    unsigned long cert_flags;
    unsigned long oid_flags;
    unsigned long str_flags;
} /* ASN1_PCTX */ ;

/* ASN1 scan context structure */

struct asn1_sctx_st {
    /* The ASN1_ITEM associated with this field */
    const ASN1_ITEM *it;
    /* If ASN1_TEMPLATE associated with this field */
    const ASN1_TEMPLATE *tt;
    /* Various flags associated with field and context */
    unsigned long flags;
    /* If SEQUENCE OF or SET OF, field index */
    int skidx;
    /* ASN1 depth of field */
    int depth;
    /* Structure and field name */
    const char *sname, *fname;
    /* If a primitive type the type of underlying field */
    int prim_type;
    /* The field value itself */
    ASN1_VALUE **field;
    /* Callback to pass information to */
    int (*scan_cb) (ASN1_SCTX *ctx);
    /* Context specific application data */
    void *app_data;
} /* ASN1_SCTX */ ;

/* ASN1 public key method structure */

struct evp_pkey_asn1_method_st {
    int pkey_id;
    int pkey_base_id;
    unsigned long pkey_flags;
    char *pem_str;
    char *info;
    int (*pub_decode) (EVP_PKEY *pk, X509_PUBKEY *pub);
    int (*pub_encode) (X509_PUBKEY *pub, const EVP_PKEY *pk);
    int (*pub_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
    int (*pub_print) (BIO *out, const EVP_PKEY *pkey, int indent,
                      ASN1_PCTX *pctx);
    int (*priv_decode) (EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf);
    int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk);
    int (*priv_print) (BIO *out, const EVP_PKEY *pkey, int indent,
                       ASN1_PCTX *pctx);
    int (*pkey_size) (const EVP_PKEY *pk);
    int (*pkey_bits) (const EVP_PKEY *pk);
    int (*pkey_security_bits) (const EVP_PKEY *pk);
    int (*param_decode) (EVP_PKEY *pkey,
                         const unsigned char **pder, int derlen);
    int (*param_encode) (const EVP_PKEY *pkey, unsigned char **pder);
    int (*param_missing) (const EVP_PKEY *pk);
    int (*param_copy) (EVP_PKEY *to, const EVP_PKEY *from);
    int (*param_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
    int (*param_print) (BIO *out, const EVP_PKEY *pkey, int indent,
                        ASN1_PCTX *pctx);
    int (*sig_print) (BIO *out,
                      const X509_ALGOR *sigalg, const ASN1_STRING *sig,
                      int indent, ASN1_PCTX *pctx);
    void (*pkey_free) (EVP_PKEY *pkey);
    int (*pkey_ctrl) (EVP_PKEY *pkey, int op, long arg1, void *arg2);
    /* Legacy functions for old PEM */
    int (*old_priv_decode) (EVP_PKEY *pkey,
                            const unsigned char **pder, int derlen);
    int (*old_priv_encode) (const EVP_PKEY *pkey, unsigned char **pder);
    /* Custom ASN1 signature verification */
    int (*item_verify) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
                        X509_ALGOR *a, ASN1_BIT_STRING *sig, EVP_PKEY *pkey);
    int (*item_sign) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
                      X509_ALGOR *alg1, X509_ALGOR *alg2,
                      ASN1_BIT_STRING *sig);
} /* EVP_PKEY_ASN1_METHOD */ ;

/*
 * Method to handle CRL access. In general a CRL could be very large (several
 * Mb) and can consume large amounts of resources if stored in memory by
 * multiple processes. This method allows general CRL operations to be
 * redirected to more efficient callbacks: for example a CRL entry database.
 */

#define X509_CRL_METHOD_DYNAMIC         1

struct x509_crl_method_st {
    int flags;
    int (*crl_init) (X509_CRL *crl);
    int (*crl_free) (X509_CRL *crl);
    int (*crl_lookup) (X509_CRL *crl, X509_REVOKED **ret,
                       ASN1_INTEGER *ser, X509_NAME *issuer);
    int (*crl_verify) (X509_CRL *crl, EVP_PKEY *pk);
};
