store.h

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/* crypto/store/store.h -*- mode:C; c-file-style: "eay" -*- */
/* Written by Richard Levitte ([e-mail]) for the OpenSSL
 * project 2003.
 */
/* ====================================================================
 * Copyright (c) 2003 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
 *    [e-mail].
 *
 * 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
 * ([e-mail]).  This product includes software written by Tim
 * Hudson ([e-mail]).
 *
 */

#ifndef HEADER_STORE_H
#define HEADER_STORE_H

#include <openssl/ossl_typ.h>
#ifndef OPENSSL_NO_DEPRECATED
#include <openssl/evp.h>
#include <openssl/bn.h>
#include <openssl/x509.h>
#endif

#ifdef  __cplusplus
extern "C" {
#endif

/* Already defined in ossl_typ.h */
/* typedef struct store_st STORE; */
/* typedef struct store_method_st STORE_METHOD; */


/* All the following functions return 0, a negative number or NULL on error.
   When everything is fine, they return a positive value or a non-NULL
   pointer, all depending on their purpose. */

/* Creators and destructor.   */
STORE *STORE_new_method(const STORE_METHOD *method);
STORE *STORE_new_engine(ENGINE *engine);
void STORE_free(STORE *ui);


/* Give a user interface parametrised control commands.  This can be used to
   send down an integer, a data pointer or a function pointer, as well as
   be used to get information from a STORE. */
int STORE_ctrl(STORE *store, int cmd, long i, void *p, void (*f)(void));

/* A control to set the directory with keys and certificates.  Used by the
   built-in directory level method. */
#define STORE_CTRL_SET_DIRECTORY	0x0001
/* A control to set a file to load.  Used by the built-in file level method. */
#define STORE_CTRL_SET_FILE		0x0002
/* A control to set a configuration file to load.  Can be used by any method
   that wishes to load a configuration file. */
#define STORE_CTRL_SET_CONF_FILE	0x0003
/* A control to set a the section of the loaded configuration file.  Can be
   used by any method that wishes to load a configuration file. */
#define STORE_CTRL_SET_CONF_SECTION	0x0004


/* Some methods may use extra data */
#define STORE_set_app_data(s,arg)	STORE_set_ex_data(s,0,arg)
#define STORE_get_app_data(s)		STORE_get_ex_data(s,0)
int STORE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
	CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
int STORE_set_ex_data(STORE *r,int idx,void *arg);
void *STORE_get_ex_data(STORE *r, int idx);

/* Use specific methods instead of the built-in one */
const STORE_METHOD *STORE_get_method(STORE *store);
const STORE_METHOD *STORE_set_method(STORE *store, const STORE_METHOD *meth);

/* The standard OpenSSL methods. */
/* This is the in-memory method.  It does everything except revoking and updating,
   and is of course volatile.  It's used by other methods that have an in-memory
   cache. */
const STORE_METHOD *STORE_Memory(void);
#if 0 /* Not yet implemented */
/* This is the directory store.  It does everything except revoking and updating,
   and uses STORE_Memory() to cache things in memory. */
const STORE_METHOD *STORE_Directory(void);
/* This is the file store.  It does everything except revoking and updating,
   and uses STORE_Memory() to cache things in memory.  Certificates are added
   to it with the store operation, and it will only get cached certificates. */
const STORE_METHOD *STORE_File(void);
#endif

/* Store functions take a type code for the type of data they should store
   or fetch */
typedef enum STORE_object_types
	{
	STORE_OBJECT_TYPE_X509_CERTIFICATE=	0x01, /* X509 * */
	STORE_OBJECT_TYPE_X509_CRL=		0x02, /* X509_CRL * */
	STORE_OBJECT_TYPE_PRIVATE_KEY=		0x03, /* EVP_PKEY * */
	STORE_OBJECT_TYPE_PUBLIC_KEY=		0x04, /* EVP_PKEY * */
	STORE_OBJECT_TYPE_NUMBER=		0x05, /* BIGNUM * */
	STORE_OBJECT_TYPE_ARBITRARY=		0x06, /* BUF_MEM * */
	STORE_OBJECT_TYPE_NUM=			0x06  /* The amount of known
							 object types */
	} STORE_OBJECT_TYPES;
/* List of text strings corresponding to the object types. */
extern const char * const STORE_object_type_string[STORE_OBJECT_TYPE_NUM+1];

/* Some store functions take a parameter list.  Those parameters come with
   one of the following codes. The comments following the codes below indicate
   what type the value should be a pointer to. */
typedef enum STORE_params
	{
	STORE_PARAM_EVP_TYPE=			0x01, /* int */
	STORE_PARAM_BITS=			0x02, /* size_t */
	STORE_PARAM_KEY_PARAMETERS=		0x03, /* ??? */
	STORE_PARAM_KEY_NO_PARAMETERS=		0x04, /* N/A */
	STORE_PARAM_AUTH_PASSPHRASE=		0x05, /* char * */
	STORE_PARAM_AUTH_KRB5_TICKET=		0x06, /* void * */
	STORE_PARAM_TYPE_NUM=			0x06  /* The amount of known
							 parameter types */
	} STORE_PARAM_TYPES;
/* Parameter value sizes.  -1 means unknown, anything else is the required size. */
extern const int STORE_param_sizes[STORE_PARAM_TYPE_NUM+1];

/* Store functions take attribute lists.  Those attributes come with codes.
   The comments following the codes below indicate what type the value should
   be a pointer to. */
typedef enum STORE_attribs
	{
	STORE_ATTR_END=				0x00,
	STORE_ATTR_FRIENDLYNAME=		0x01, /* C string */
	STORE_ATTR_KEYID=			0x02, /* 160 bit string (SHA1) */
	STORE_ATTR_ISSUERKEYID=			0x03, /* 160 bit string (SHA1) */
	STORE_ATTR_SUBJECTKEYID=		0x04, /* 160 bit string (SHA1) */
	STORE_ATTR_ISSUERSERIALHASH=		0x05, /* 160 bit string (SHA1) */
	STORE_ATTR_ISSUER=			0x06, /* X509_NAME * */
	STORE_ATTR_SERIAL=			0x07, /* BIGNUM * */
	STORE_ATTR_SUBJECT=			0x08, /* X509_NAME * */
	STORE_ATTR_CERTHASH=			0x09, /* 160 bit string (SHA1) */
	STORE_ATTR_EMAIL=			0x0a, /* C string */
	STORE_ATTR_FILENAME=			0x0b, /* C string */
	STORE_ATTR_TYPE_NUM=			0x0b, /* The amount of known
							 attribute types */
	STORE_ATTR_OR=				0xff  /* This is a special
							 separator, which
							 expresses the OR
							 operation.  */
	} STORE_ATTR_TYPES;
/* Attribute value sizes.  -1 means unknown, anything else is the required size. */
extern const int STORE_attr_sizes[STORE_ATTR_TYPE_NUM+1];

typedef enum STORE_certificate_status
	{
	STORE_X509_VALID=			0x00,
	STORE_X509_EXPIRED=			0x01,
	STORE_X509_SUSPENDED=			0x02,
	STORE_X509_REVOKED=			0x03
	} STORE_CERTIFICATE_STATUS;

/* Engine store functions will return a structure that contains all the necessary
 * information, including revokation status for certificates.  This is really not
 * needed for application authors, as the ENGINE framework functions will extract
 * the OpenSSL-specific information when at all possible.  However, for engine
 * authors, it's crucial to know this structure.  */
typedef struct STORE_OBJECT_st
	{
	STORE_OBJECT_TYPES type;
	union
		{
		struct
			{
			STORE_CERTIFICATE_STATUS status;
			X509 *certificate;
			} x509;
		X509_CRL *crl;
		EVP_PKEY *key;
		BIGNUM *number;
		BUF_MEM *arbitrary;
		} data;
	} STORE_OBJECT;
DECLARE_STACK_OF(STORE_OBJECT)
STORE_OBJECT *STORE_OBJECT_new(void);
void STORE_OBJECT_free(STORE_OBJECT *data);



/* The following functions handle the storage. They return 0, a negative number
   or NULL on error, anything else on success. */
X509 *STORE_get_certificate(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
int STORE_store_certificate(STORE *e, X509 *data, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
int STORE_modify_certificate(STORE *e, OPENSSL_ITEM search_attributes[],
	OPENSSL_ITEM add_attributes[], OPENSSL_ITEM modify_attributes[],
	OPENSSL_ITEM delete_attributes[], OPENSSL_ITEM parameters[]);
int STORE_revoke_certificate(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
int STORE_delete_certificate(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
void *STORE_list_certificate_start(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
X509 *STORE_list_certificate_next(STORE *e, void *handle);
int STORE_list_certificate_end(STORE *e, void *handle);
int STORE_list_certificate_endp(STORE *e, void *handle);
EVP_PKEY *STORE_generate_key(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
EVP_PKEY *STORE_get_private_key(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
int STORE_store_private_key(STORE *e, EVP_PKEY *data,
	OPENSSL_ITEM attributes[], OPENSSL_ITEM parameters[]);
int STORE_modify_private_key(STORE *e, OPENSSL_ITEM search_attributes[],
	OPENSSL_ITEM add_sttributes[], OPENSSL_ITEM modify_attributes[],
	OPENSSL_ITEM delete_attributes[], OPENSSL_ITEM parameters[]);
int STORE_revoke_private_key(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
int STORE_delete_private_key(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
void *STORE_list_private_key_start(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
EVP_PKEY *STORE_list_private_key_next(STORE *e, void *handle);
int STORE_list_private_key_end(STORE *e, void *handle);
int STORE_list_private_key_endp(STORE *e, void *handle);
EVP_PKEY *STORE_get_public_key(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
int STORE_store_public_key(STORE *e, EVP_PKEY *data, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
int STORE_modify_public_key(STORE *e, OPENSSL_ITEM search_attributes[],
	OPENSSL_ITEM add_sttributes[], OPENSSL_ITEM modify_attributes[],
	OPENSSL_ITEM delete_attributes[], OPENSSL_ITEM parameters[]);
int STORE_revoke_public_key(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
int STORE_delete_public_key(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
void *STORE_list_public_key_start(STORE *e, OPENSSL_ITEM attributes[],
	OPENSSL_ITEM parameters[]);
EVP_PKEY *STORE_list_public_key_next(STORE *e, void *handle);
int STORE_list_public_key_end(STORE *e, void *handle);