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Filename : conf.h
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/* crypto/conf/conf.h */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#ifndef  HEADER_CONF_H
# define HEADER_CONF_H

# include <openssl/bio.h>
# include <openssl/lhash.h>
# include <openssl/stack.h>
# include <openssl/safestack.h>
# include <openssl/e_os2.h>

# include <openssl/ossl_typ.h>

#ifdef  __cplusplus
extern "C" {
#endif

typedef struct {
    char *section;
    char *name;
    char *value;
} CONF_VALUE;

DECLARE_STACK_OF(CONF_VALUE)
DECLARE_LHASH_OF(CONF_VALUE);

struct conf_st;
struct conf_method_st;
typedef struct conf_method_st CONF_METHOD;

struct conf_method_st {
    const char *name;
    CONF *(*create) (CONF_METHOD *meth);
    int (*init) (CONF *conf);
    int (*destroy) (CONF *conf);
    int (*destroy_data) (CONF *conf);
    int (*load_bio) (CONF *conf, BIO *bp, long *eline);
    int (*dump) (const CONF *conf, BIO *bp);
    int (*is_number) (const CONF *conf, char c);
    int (*to_int) (const CONF *conf, char c);
    int (*load) (CONF *conf, const char *name, long *eline);
};

/* Module definitions */

typedef struct conf_imodule_st CONF_IMODULE;
typedef struct conf_module_st CONF_MODULE;

DECLARE_STACK_OF(CONF_MODULE)
DECLARE_STACK_OF(CONF_IMODULE)

/* DSO module function typedefs */
typedef int conf_init_func (CONF_IMODULE *md, const CONF *cnf);
typedef void conf_finish_func (CONF_IMODULE *md);

# define CONF_MFLAGS_IGNORE_ERRORS       0x1
# define CONF_MFLAGS_IGNORE_RETURN_CODES 0x2
# define CONF_MFLAGS_SILENT              0x4
# define CONF_MFLAGS_NO_DSO              0x8
# define CONF_MFLAGS_IGNORE_MISSING_FILE 0x10
# define CONF_MFLAGS_DEFAULT_SECTION     0x20

int CONF_set_default_method(CONF_METHOD *meth);
void CONF_set_nconf(CONF *conf, LHASH_OF(CONF_VALUE) *hash);
LHASH_OF(CONF_VALUE) *CONF_load(LHASH_OF(CONF_VALUE) *conf, const char *file,
                                long *eline);
# ifndef OPENSSL_NO_FP_API
LHASH_OF(CONF_VALUE) *CONF_load_fp(LHASH_OF(CONF_VALUE) *conf, FILE *fp,
                                   long *eline);
# endif
LHASH_OF(CONF_VALUE) *CONF_load_bio(LHASH_OF(CONF_VALUE) *conf, BIO *bp,
                                    long *eline);
STACK_OF(CONF_VALUE) *CONF_get_section(LHASH_OF(CONF_VALUE) *conf,
                                       const char *section);
char *CONF_get_string(LHASH_OF(CONF_VALUE) *conf, const char *group,
                      const char *name);
long CONF_get_number(LHASH_OF(CONF_VALUE) *conf, const char *group,
                     const char *name);
void CONF_free(LHASH_OF(CONF_VALUE) *conf);
int CONF_dump_fp(LHASH_OF(CONF_VALUE) *conf, FILE *out);
int CONF_dump_bio(LHASH_OF(CONF_VALUE) *conf, BIO *out);

void OPENSSL_config(const char *config_name);
void OPENSSL_no_config(void);

/*
 * New conf code.  The semantics are different from the functions above. If
 * that wasn't the case, the above functions would have been replaced
 */

struct conf_st {
    CONF_METHOD *meth;
    void *meth_data;
    LHASH_OF(CONF_VALUE) *data;
};

CONF *NCONF_new(CONF_METHOD *meth);
CONF_METHOD *NCONF_default(void);
CONF_METHOD *NCONF_WIN32(void);
# if 0                          /* Just to give you an idea of what I have in
                                 * mind */
CONF_METHOD *NCONF_XML(void);
# endif
void NCONF_free(CONF *conf);
void NCONF_free_data(CONF *conf);

int NCONF_load(CONF *conf, const char *file, long *eline);
# ifndef OPENSSL_NO_FP_API
int NCONF_load_fp(CONF *conf, FILE *fp, long *eline);
# endif
int NCONF_load_bio(CONF *conf, BIO *bp, long *eline);
STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf,
                                        const char *section);
char *NCONF_get_string(const CONF *conf, const char *group, const char *name);
int NCONF_get_number_e(const CONF *conf, const char *group, const char *name,
                       long *result);
int NCONF_dump_fp(const CONF *conf, FILE *out);
int NCONF_dump_bio(const CONF *conf, BIO *out);

# if 0                          /* The following function has no error
                                 * checking, and should therefore be avoided */
long NCONF_get_number(CONF *conf, char *group, char *name);
# else
#  define NCONF_get_number(c,g,n,r) NCONF_get_number_e(c,g,n,r)
# endif

/* Module functions */

int CONF_modules_load(const CONF *cnf, const char *appname,
                      unsigned long flags);
int CONF_modules_load_file(const char *filename, const char *appname,
                           unsigned long flags);
void CONF_modules_unload(int all);
void CONF_modules_finish(void);
void CONF_modules_free(void);
int CONF_module_add(const char *name, conf_init_func *ifunc,
                    conf_finish_func *ffunc);

const char *CONF_imodule_get_name(const CONF_IMODULE *md);
const char *CONF_imodule_get_value(const CONF_IMODULE *md);
void *CONF_imodule_get_usr_data(const CONF_IMODULE *md);
void CONF_imodule_set_usr_data(CONF_IMODULE *md, void *usr_data);
CONF_MODULE *CONF_imodule_get_module(const CONF_IMODULE *md);
unsigned long CONF_imodule_get_flags(const CONF_IMODULE *md);
void CONF_imodule_set_flags(CONF_IMODULE *md, unsigned long flags);
void *CONF_module_get_usr_data(CONF_MODULE *pmod);
void CONF_module_set_usr_data(CONF_MODULE *pmod, void *usr_data);

char *CONF_get1_default_config_file(void);

int CONF_parse_list(const char *list, int sep, int nospc,
                    int (*list_cb) (const char *elem, int len, void *usr),
                    void *arg);

void OPENSSL_load_builtin_modules(void);

/* BEGIN ERROR CODES */
/*
 * The following lines are auto generated by the script mkerr.pl. Any changes
 * made after this point may be overwritten when the script is next run.
 */
void ERR_load_CONF_strings(void);

/* Error codes for the CONF functions. */

/* Function codes. */
# define CONF_F_CONF_DUMP_FP                              104
# define CONF_F_CONF_LOAD                                 100
# define CONF_F_CONF_LOAD_BIO                             102
# define CONF_F_CONF_LOAD_FP                              103
# define CONF_F_CONF_MODULES_LOAD                         116
# define CONF_F_CONF_PARSE_LIST                           119
# define CONF_F_DEF_LOAD                                  120
# define CONF_F_DEF_LOAD_BIO                              121
# define CONF_F_MODULE_INIT                               115
# define CONF_F_MODULE_LOAD_DSO                           117
# define CONF_F_MODULE_RUN                                118
# define CONF_F_NCONF_DUMP_BIO                            105
# define CONF_F_NCONF_DUMP_FP                             106
# define CONF_F_NCONF_GET_NUMBER                          107
# define CONF_F_NCONF_GET_NUMBER_E                        112
# define CONF_F_NCONF_GET_SECTION                         108
# define CONF_F_NCONF_GET_STRING                          109
# define CONF_F_NCONF_LOAD                                113
# define CONF_F_NCONF_LOAD_BIO                            110
# define CONF_F_NCONF_LOAD_FP                             114
# define CONF_F_NCONF_NEW                                 111
# define CONF_F_STR_COPY                                  101

/* Reason codes. */
# define CONF_R_ERROR_LOADING_DSO                         110
# define CONF_R_LIST_CANNOT_BE_NULL                       115
# define CONF_R_MISSING_CLOSE_SQUARE_BRACKET              100
# define CONF_R_MISSING_EQUAL_SIGN                        101
# define CONF_R_MISSING_FINISH_FUNCTION                   111
# define CONF_R_MISSING_INIT_FUNCTION                     112
# define CONF_R_MODULE_INITIALIZATION_ERROR               109
# define CONF_R_NO_CLOSE_BRACE                            102
# define CONF_R_NO_CONF                                   105
# define CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE           106
# define CONF_R_NO_SECTION                                107
# define CONF_R_NO_SUCH_FILE                              114
# define CONF_R_NO_VALUE                                  108
# define CONF_R_UNABLE_TO_CREATE_NEW_SECTION              103
# define CONF_R_UNKNOWN_MODULE_NAME                       113
# define CONF_R_VARIABLE_EXPANSION_TOO_LONG               116
# define CONF_R_VARIABLE_HAS_NO_VALUE                     104

#ifdef  __cplusplus
}
#endif
#endif