text: /* crypto/crypto.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_CRYPTO_H
  #define HEADER_CRYPTO_H
  
  #include <stdlib.h>
  
  #ifndef OPENSSL_NO_FP_API
  #include <stdio.h>
  #endif
  
  #include <openssl/stack.h>
  #include <openssl/safestack.h>
  #include <openssl/opensslv.h>
  
  #ifdef CHARSET_EBCDIC
  #include <openssl/ebcdic.h>
  #endif
  
  /* Resolve problems on some operating systems with symbol names that clash
     one way or another */
  #include <openssl/symhacks.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  /* Backward compatibility to SSLeay */
  /* This is more to be used to check the correct DLL is being used
   * in the MS world. */
  #define SSLEAY_VERSION_NUMBER	OPENSSL_VERSION_NUMBER
  #define SSLEAY_VERSION		0
  /* #define SSLEAY_OPTIONS	1 no longer supported */
  #define SSLEAY_CFLAGS		2
  #define SSLEAY_BUILT_ON		3
  #define SSLEAY_PLATFORM		4
  #define SSLEAY_DIR		5
  
  /* When changing the CRYPTO_LOCK_* list, be sure to maintin the text lock
   * names in cryptlib.c
   */
  
  #define CRYPTO_LOCK_ERR			1
  #define CRYPTO_LOCK_EX_DATA		2
  #define CRYPTO_LOCK_X509		3
  #define CRYPTO_LOCK_X509_INFO		4
  #define CRYPTO_LOCK_X509_PKEY		5
  #define CRYPTO_LOCK_X509_CRL		6
  #define CRYPTO_LOCK_X509_REQ		7
  #define CRYPTO_LOCK_DSA			8
  #define CRYPTO_LOCK_RSA			9
  #define CRYPTO_LOCK_EVP_PKEY		10
  #define CRYPTO_LOCK_X509_STORE		11
  #define CRYPTO_LOCK_SSL_CTX		12
  #define CRYPTO_LOCK_SSL_CERT		13
  #define CRYPTO_LOCK_SSL_SESSION		14
  #define CRYPTO_LOCK_SSL_SESS_CERT	15
  #define CRYPTO_LOCK_SSL			16
  #define CRYPTO_LOCK_SSL_METHOD		17
  #define CRYPTO_LOCK_RAND		18
  #define CRYPTO_LOCK_RAND2		19
  #define CRYPTO_LOCK_MALLOC		20
  #define CRYPTO_LOCK_BIO			21
  #define CRYPTO_LOCK_GETHOSTBYNAME	22
  #define CRYPTO_LOCK_GETSERVBYNAME	23
  #define CRYPTO_LOCK_READDIR		24
  #define CRYPTO_LOCK_RSA_BLINDING	25
  #define CRYPTO_LOCK_DH			26
  #define CRYPTO_LOCK_MALLOC2		27
  #define CRYPTO_LOCK_DSO			28
  #define CRYPTO_LOCK_DYNLOCK		29
  #define CRYPTO_LOCK_ENGINE		30
  #define CRYPTO_LOCK_UI			31
  #define CRYPTO_LOCK_HWCRHK		32 /* This is a HACK which will disappear in 0.9.8 */
  #define CRYPTO_LOCK_FIPS		33
  #define CRYPTO_LOCK_FIPS2		34
  #define CRYPTO_NUM_LOCKS		35
  
  #define CRYPTO_LOCK		1
  #define CRYPTO_UNLOCK		2
  #define CRYPTO_READ		4
  #define CRYPTO_WRITE		8
  
  #ifndef OPENSSL_NO_LOCKING
  #ifndef CRYPTO_w_lock
  #define CRYPTO_w_lock(type)	\
  	CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE,type,__FILE__,__LINE__)
  #define CRYPTO_w_unlock(type)	\
  	CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE,type,__FILE__,__LINE__)
  #define CRYPTO_r_lock(type)	\
  	CRYPTO_lock(CRYPTO_LOCK|CRYPTO_READ,type,__FILE__,__LINE__)
  #define CRYPTO_r_unlock(type)	\
  	CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_READ,type,__FILE__,__LINE__)
  #define CRYPTO_add(addr,amount,type)	\
  	CRYPTO_add_lock(addr,amount,type,__FILE__,__LINE__)
  #endif
  #else
  #define CRYPTO_w_lock(a)
  #define CRYPTO_w_unlock(a)
  #define CRYPTO_r_lock(a)
  #define CRYPTO_r_unlock(a)
  #define CRYPTO_add(a,b,c)	((*(a))+=(b))
  #endif
  
  /* Some applications as well as some parts of OpenSSL need to allocate
     and deallocate locks in a dynamic fashion.  The following typedef
     makes this possible in a type-safe manner.  */
  /* struct CRYPTO_dynlock_value has to be defined by the application. */
  typedef struct
  	{
  	int references;
  	struct CRYPTO_dynlock_value *data;
  	} CRYPTO_dynlock;
  
  
  /* The following can be used to detect memory leaks in the SSLeay library.
   * It used, it turns on malloc checking */
  
  #define CRYPTO_MEM_CHECK_OFF	0x0	/* an enume */
  #define CRYPTO_MEM_CHECK_ON	0x1	/* a bit */
  #define CRYPTO_MEM_CHECK_ENABLE	0x2	/* a bit */
  #define CRYPTO_MEM_CHECK_DISABLE 0x3	/* an enume */
  
  /* The following are bit values to turn on or off options connected to the
   * malloc checking functionality */
  
  /* Adds time to the memory checking information */
  #define V_CRYPTO_MDEBUG_TIME	0x1 /* a bit */
  /* Adds thread number to the memory checking information */
  #define V_CRYPTO_MDEBUG_THREAD	0x2 /* a bit */
  
  #define V_CRYPTO_MDEBUG_ALL (V_CRYPTO_MDEBUG_TIME | V_CRYPTO_MDEBUG_THREAD)
  
  
  /* predec of the BIO type */
  typedef struct bio_st BIO_dummy;
  
  typedef struct crypto_ex_data_st
  	{
  	STACK *sk;
  	int dummy; /* gcc is screwing up this data structure :-( */
  	} CRYPTO_EX_DATA;
  
  /* Called when a new object is created */
  typedef int CRYPTO_EX_new(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
  					int idx, long argl, void *argp);
  /* Called when an object is free()ed */
  typedef void CRYPTO_EX_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad,
  					int idx, long argl, void *argp);
  /* Called when we need to dup an object */
  typedef int CRYPTO_EX_dup(CRYPTO_EX_DATA *to, CRYPTO_EX_DATA *from, void *from_d, 
  					int idx, long argl, void *argp);
  
  /* This stuff is basically class callback functions
   * The current classes are SSL_CTX, SSL, SSL_SESSION, and a few more */
  
  typedef struct crypto_ex_data_func_st
  	{
  	long argl;	/* Arbitary long */
  	void *argp;	/* Arbitary void * */
  	CRYPTO_EX_new *new_func;
  	CRYPTO_EX_free *free_func;
  	CRYPTO_EX_dup *dup_func;
  	} CRYPTO_EX_DATA_FUNCS;
  
  DECLARE_STACK_OF(CRYPTO_EX_DATA_FUNCS)
  
  /* Per class, we have a STACK of CRYPTO_EX_DATA_FUNCS for each CRYPTO_EX_DATA
   * entry.
   */
  
  #define CRYPTO_EX_INDEX_BIO		0
  #define CRYPTO_EX_INDEX_SSL		1
  #define CRYPTO_EX_INDEX_SSL_CTX		2
  #define CRYPTO_EX_INDEX_SSL_SESSION	3
  #define CRYPTO_EX_INDEX_X509_STORE	4
  #define CRYPTO_EX_INDEX_X509_STORE_CTX	5
  #define CRYPTO_EX_INDEX_RSA		6
  #define CRYPTO_EX_INDEX_DSA		7
  #define CRYPTO_EX_INDEX_DH		8
  #define CRYPTO_EX_INDEX_ENGINE		9
  #define CRYPTO_EX_INDEX_X509		10
  #define CRYPTO_EX_INDEX_UI		11
  
  /* Dynamically assigned indexes start from this value (don't use directly, use
   * via CRYPTO_ex_data_new_class). */
  #define CRYPTO_EX_INDEX_USER		100
  
  
  /* This is the default callbacks, but we can have others as well:
   * this is needed in Win32 where the application malloc and the
   * library malloc may not be the same.
   */
  #define CRYPTO_malloc_init()	CRYPTO_set_mem_functions(\
  	malloc, realloc, free)
  
  #if defined CRYPTO_MDEBUG_ALL || defined CRYPTO_MDEBUG_TIME || defined CRYPTO_MDEBUG_THREAD
  # ifndef CRYPTO_MDEBUG /* avoid duplicate #define */
  #  define CRYPTO_MDEBUG
  # endif
  #endif
  
  /* Set standard debugging functions (not done by default
   * unless CRYPTO_MDEBUG is defined) */
  #define CRYPTO_malloc_debug_init()	do {\
  	CRYPTO_set_mem_debug_functions(\
  		CRYPTO_dbg_malloc,\
  		CRYPTO_dbg_realloc,\
  		CRYPTO_dbg_free,\
  		CRYPTO_dbg_set_options,\
  		CRYPTO_dbg_get_options);\
  	} while(0)
  
  int CRYPTO_mem_ctrl(int mode);
  int CRYPTO_is_mem_check_on(void);
  
  /* for applications */
  #define MemCheck_start() CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON)
  #define MemCheck_stop()	CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF)
  
  /* for library-internal use */
  #define MemCheck_on()	CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE)
  #define MemCheck_off()	CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE)
  #define is_MemCheck_on() CRYPTO_is_mem_check_on()
  
  #define OPENSSL_malloc(num)	CRYPTO_malloc((int)num,__FILE__,__LINE__)
  #define OPENSSL_realloc(addr,num) \
  	CRYPTO_realloc((char *)addr,(int)num,__FILE__,__LINE__)
  #define OPENSSL_realloc_clean(addr,old_num,num) \
  	CRYPTO_realloc_clean(addr,old_num,num,__FILE__,__LINE__)
  #define OPENSSL_remalloc(addr,num) \
  	CRYPTO_remalloc((char **)addr,(int)num,__FILE__,__LINE__)
  #define OPENSSL_freeFunc	CRYPTO_free
  #define OPENSSL_free(addr)	CRYPTO_free(addr)
  
  #define OPENSSL_malloc_locked(num) \
  	CRYPTO_malloc_locked((int)num,__FILE__,__LINE__)
  #define OPENSSL_free_locked(addr) CRYPTO_free_locked(addr)
  
  
  const char *SSLeay_version(int type);
  unsigned long SSLeay(void);
  
  int OPENSSL_issetugid(void);
  
  /* An opaque type representing an implementation of "ex_data" support */
  typedef struct st_CRYPTO_EX_DATA_IMPL	CRYPTO_EX_DATA_IMPL;
  /* Return an opaque pointer to the current "ex_data" implementation */
  const CRYPTO_EX_DATA_IMPL *CRYPTO_get_ex_data_implementation(void);
  /* Sets the "ex_data" implementation to be used (if it's not too late) */
  int CRYPTO_set_ex_data_implementation(const CRYPTO_EX_DATA_IMPL *i);
  /* Get a new "ex_data" class, and return the corresponding "class_index" */
  int CRYPTO_ex_data_new_class(void);
  /* Within a given class, get/register a new index */
  int CRYPTO_get_ex_new_index(int class_index, long argl, void *argp,
  		CRYPTO_EX_new *new_func, CRYPTO_EX_dup *dup_func,
  		CRYPTO_EX_free *free_func);
  /* Initialise/duplicate/free CRYPTO_EX_DATA variables corresponding to a given
   * class (invokes whatever per-class callbacks are applicable) */
  int CRYPTO_new_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad);
  int CRYPTO_dup_ex_data(int class_index, CRYPTO_EX_DATA *to,
  		CRYPTO_EX_DATA *from);
  void CRYPTO_free_ex_data(int class_index, void *obj, CRYPTO_EX_DATA *ad);
  /* Get/set data in a CRYPTO_EX_DATA variable corresponding to a particular index
   * (relative to the class type involved) */
  int CRYPTO_set_ex_data(CRYPTO_EX_DATA *ad, int idx, void *val);
  void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad,int idx);
  /* This function cleans up all "ex_data" state. It mustn't be called under
   * potential race-conditions. */
  void CRYPTO_cleanup_all_ex_data(void);
  
  int CRYPTO_get_new_lockid(char *name);
  
  int CRYPTO_num_locks(void); /* return CRYPTO_NUM_LOCKS (shared libs!) */
  void CRYPTO_lock(int mode, int type,const char *file,int line);
  void CRYPTO_set_locking_callback(void (*func)(int mode,int type,
  					      const char *file,int line));
  void (*CRYPTO_get_locking_callback(void))(int mode,int type,const char *file,
  		int line);
  void CRYPTO_set_add_lock_callback(int (*func)(int *num,int mount,int type,
  					      const char *file, int line));
  int (*CRYPTO_get_add_lock_callback(void))(int *num,int mount,int type,
  					  const char *file,int line);
  void CRYPTO_set_id_callback(unsigned long (*func)(void));
  unsigned long (*CRYPTO_get_id_callback(void))(void);
  unsigned long CRYPTO_thread_id(void);
  const char *CRYPTO_get_lock_name(int type);
  int CRYPTO_add_lock(int *pointer,int amount,int type, const char *file,
  		    int line);
  
  int CRYPTO_get_new_dynlockid(void);
  void CRYPTO_destroy_dynlockid(int i);
  struct CRYPTO_dynlock_value *CRYPTO_get_dynlock_value(int i);
  void CRYPTO_set_dynlock_create_callback(struct CRYPTO_dynlock_value *(*dyn_create_function)(const char *file, int line));
  void CRYPTO_set_dynlock_lock_callback(void (*dyn_lock_function)(int mode, struct CRYPTO_dynlock_value *l, const char *file, int line));
  void CRYPTO_set_dynlock_destroy_callback(void (*dyn_destroy_function)(struct CRYPTO_dynlock_value *l, const char *file, int line));
  struct CRYPTO_dynlock_value *(*CRYPTO_get_dynlock_create_callback(void))(const char *file,int line);
  void (*CRYPTO_get_dynlock_lock_callback(void))(int mode, struct CRYPTO_dynlock_value *l, const char *file,int line);
  void (*CRYPTO_get_dynlock_destroy_callback(void))(struct CRYPTO_dynlock_value *l, const char *file,int line);
  
  /* CRYPTO_set_mem_functions includes CRYPTO_set_locked_mem_functions --
   * call the latter last if you need different functions */
  int CRYPTO_set_mem_functions(void *(*m)(size_t),void *(*r)(void *,size_t), void (*f)(void *));
  int CRYPTO_set_locked_mem_functions(void *(*m)(size_t), void (*free_func)(void *));
  int CRYPTO_set_mem_ex_functions(void *(*m)(size_t,const char *,int),
                                  void *(*r)(void *,size_t,const char *,int),
                                  void (*f)(void *));
  int CRYPTO_set_locked_mem_ex_functions(void *(*m)(size_t,const char *,int),
                                         void (*free_func)(void *));
  int CRYPTO_set_mem_debug_functions(void (*m)(void *,int,const char *,int,int),
  				   void (*r)(void *,void *,int,const char *,int,int),
  				   void (*f)(void *,int),
  				   void (*so)(long),
  				   long (*go)(void));
  void CRYPTO_get_mem_functions(void *(**m)(size_t),void *(**r)(void *, size_t), void (**f)(void *));
  void CRYPTO_get_locked_mem_functions(void *(**m)(size_t), void (**f)(void *));
  void CRYPTO_get_mem_ex_functions(void *(**m)(size_t,const char *,int),
                                   void *(**r)(void *, size_t,const char *,int),
                                   void (**f)(void *));
  void CRYPTO_get_locked_mem_ex_functions(void *(**m)(size_t,const char *,int),
                                          void (**f)(void *));
  void CRYPTO_get_mem_debug_functions(void (**m)(void *,int,const char *,int,int),
  				    void (**r)(void *,void *,int,const char *,int,int),
  				    void (**f)(void *,int),
  				    void (**so)(long),
  				    long (**go)(void));
  
  void *CRYPTO_malloc_locked(int num, const char *file, int line);
  void CRYPTO_free_locked(void *);
  void *CRYPTO_malloc(int num, const char *file, int line);
  void CRYPTO_free(void *);
  void *CRYPTO_realloc(void *addr,int num, const char *file, int line);
  void *CRYPTO_realloc_clean(void *addr,int old_num,int num,const char *file,
  			   int line);
  void *CRYPTO_remalloc(void *addr,int num, const char *file, int line);
  
  void OPENSSL_cleanse(void *ptr, size_t len);
  
  void CRYPTO_set_mem_debug_options(long bits);
  long CRYPTO_get_mem_debug_options(void);
  
  #define CRYPTO_push_info(info) \
          CRYPTO_push_info_(info, __FILE__, __LINE__);
  int CRYPTO_push_info_(const char *info, const char *file, int line);
  int CRYPTO_pop_info(void);
  int CRYPTO_remove_all_info(void);
  
  
  /* Default debugging functions (enabled by CRYPTO_malloc_debug_init() macro;
   * used as default in CRYPTO_MDEBUG compilations): */
  /* The last argument has the following significance:
   *
   * 0:	called before the actual memory allocation has taken place
   * 1:	called after the actual memory allocation has taken place
   */
  void CRYPTO_dbg_malloc(void *addr,int num,const char *file,int line,int before_p);
  void CRYPTO_dbg_realloc(void *addr1,void *addr2,int num,const char *file,int line,int before_p);
  void CRYPTO_dbg_free(void *addr,int before_p);
  /* Tell the debugging code about options.  By default, the following values
   * apply:
   *
   * 0:                           Clear all options.
   * V_CRYPTO_MDEBUG_TIME (1):    Set the "Show Time" option.
   * V_CRYPTO_MDEBUG_THREAD (2):  Set the "Show Thread Number" option.
   * V_CRYPTO_MDEBUG_ALL (3):     1 + 2
   */
  void CRYPTO_dbg_set_options(long bits);
  long CRYPTO_dbg_get_options(void);
  
  
  #ifndef OPENSSL_NO_FP_API
  void CRYPTO_mem_leaks_fp(FILE *);
  #endif
  void CRYPTO_mem_leaks(struct bio_st *bio);
  /* unsigned long order, char *file, int line, int num_bytes, char *addr */
  typedef void *CRYPTO_MEM_LEAK_CB(unsigned long, const char *, int, int, void *);
  void CRYPTO_mem_leaks_cb(CRYPTO_MEM_LEAK_CB *cb);
  
  /* die if we have to */
  void OpenSSLDie(const char *file,int line,const char *assertion);
  #define OPENSSL_assert(e)	((e) ? (void)0 : OpenSSLDie(__FILE__, __LINE__, #e))
  
  #ifdef OPENSSL_FIPS
  int FIPS_mode(void);
  void *FIPS_rand_check(void);
  #endif /* def OPENSSL_FIPS */
  
  /* 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_CRYPTO_strings(void);
  
  /* Error codes for the CRYPTO functions. */
  
  /* Function codes. */
  #define CRYPTO_F_CRYPTO_GET_EX_NEW_INDEX		 100
  #define CRYPTO_F_CRYPTO_GET_NEW_DYNLOCKID		 103
  #define CRYPTO_F_CRYPTO_GET_NEW_LOCKID			 101
  #define CRYPTO_F_CRYPTO_SET_EX_DATA			 102
  #define CRYPTO_F_DEF_ADD_INDEX				 104
  #define CRYPTO_F_DEF_GET_CLASS				 105
  #define CRYPTO_F_INT_DUP_EX_DATA			 106
  #define CRYPTO_F_INT_FREE_EX_DATA			 107
  #define CRYPTO_F_INT_NEW_EX_DATA			 108
  
  /* Reason codes. */
  #define CRYPTO_R_NO_DYNLOCK_CREATE_CALLBACK		 100
  
  #ifdef  __cplusplus
  }
  #endif
  #endif
  