text: /*
   * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
   * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
   *
   * Licensed under the OpenSSL license (the "License").  You may not use
   * this file except in compliance with the License.  You can obtain a copy
   * in the file LICENSE in the source distribution or at
   * https://www.openssl.org/source/license.html
   */
  
  #ifndef HEADER_CRYPTO_H
  # define HEADER_CRYPTO_H
  
  # include <stdlib.h>
  # include <time.h>
  
  # include <openssl/e_os2.h>
  
  # ifndef OPENSSL_NO_STDIO
  #  include <stdio.h>
  # endif
  
  # include <openssl/safestack.h>
  # include <openssl/opensslv.h>
  # include <openssl/ossl_typ.h>
  # include <openssl/opensslconf.h>
  # include <openssl/cryptoerr.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>
  
  # if OPENSSL_API_COMPAT < 0x10100000L
  #  include <openssl/opensslv.h>
  # endif
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  # if OPENSSL_API_COMPAT < 0x10100000L
  #  define SSLeay                  OpenSSL_version_num
  #  define SSLeay_version          OpenSSL_version
  #  define SSLEAY_VERSION_NUMBER   OPENSSL_VERSION_NUMBER
  #  define SSLEAY_VERSION          OPENSSL_VERSION
  #  define SSLEAY_CFLAGS           OPENSSL_CFLAGS
  #  define SSLEAY_BUILT_ON         OPENSSL_BUILT_ON
  #  define SSLEAY_PLATFORM         OPENSSL_PLATFORM
  #  define SSLEAY_DIR              OPENSSL_DIR
  
  /*
   * Old type for allocating dynamic locks. No longer used. Use the new thread
   * API instead.
   */
  typedef struct {
      int dummy;
  } CRYPTO_dynlock;
  
  # endif /* OPENSSL_API_COMPAT */
  
  typedef void CRYPTO_RWLOCK;
  
  CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void);
  int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock);
  int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock);
  int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock);
  void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock);
  
  int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock);
  
  /*
   * The following can be used to detect memory leaks in the library. If
   * used, it turns on malloc checking
   */
  # define CRYPTO_MEM_CHECK_OFF     0x0   /* Control only */
  # define CRYPTO_MEM_CHECK_ON      0x1   /* Control and mode bit */
  # define CRYPTO_MEM_CHECK_ENABLE  0x2   /* Control and mode bit */
  # define CRYPTO_MEM_CHECK_DISABLE 0x3   /* Control only */
  
  struct crypto_ex_data_st {
      STACK_OF(void) *sk;
  };
  DEFINE_STACK_OF(void)
  
  /*
   * Per class, we have a STACK of function pointers.
   */
  # define CRYPTO_EX_INDEX_SSL              0
  # define CRYPTO_EX_INDEX_SSL_CTX          1
  # define CRYPTO_EX_INDEX_SSL_SESSION      2
  # define CRYPTO_EX_INDEX_X509             3
  # define CRYPTO_EX_INDEX_X509_STORE       4
  # define CRYPTO_EX_INDEX_X509_STORE_CTX   5
  # define CRYPTO_EX_INDEX_DH               6
  # define CRYPTO_EX_INDEX_DSA              7
  # define CRYPTO_EX_INDEX_EC_KEY           8
  # define CRYPTO_EX_INDEX_RSA              9
  # define CRYPTO_EX_INDEX_ENGINE          10
  # define CRYPTO_EX_INDEX_UI              11
  # define CRYPTO_EX_INDEX_BIO             12
  # define CRYPTO_EX_INDEX_APP             13
  # define CRYPTO_EX_INDEX_UI_METHOD       14
  # define CRYPTO_EX_INDEX_DRBG            15
  # define CRYPTO_EX_INDEX__COUNT          16
  
  /* No longer needed, so this is a no-op */
  #define OPENSSL_malloc_init() while(0) continue
  
  int CRYPTO_mem_ctrl(int mode);
  
  # define OPENSSL_malloc(num) \
          CRYPTO_malloc(num, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_zalloc(num) \
          CRYPTO_zalloc(num, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_realloc(addr, num) \
          CRYPTO_realloc(addr, num, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_clear_realloc(addr, old_num, num) \
          CRYPTO_clear_realloc(addr, old_num, num, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_clear_free(addr, num) \
          CRYPTO_clear_free(addr, num, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_free(addr) \
          CRYPTO_free(addr, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_memdup(str, s) \
          CRYPTO_memdup((str), s, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_strdup(str) \
          CRYPTO_strdup(str, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_strndup(str, n) \
          CRYPTO_strndup(str, n, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_secure_malloc(num) \
          CRYPTO_secure_malloc(num, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_secure_zalloc(num) \
          CRYPTO_secure_zalloc(num, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_secure_free(addr) \
          CRYPTO_secure_free(addr, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_secure_clear_free(addr, num) \
          CRYPTO_secure_clear_free(addr, num, OPENSSL_FILE, OPENSSL_LINE)
  # define OPENSSL_secure_actual_size(ptr) \
          CRYPTO_secure_actual_size(ptr)
  
  size_t OPENSSL_strlcpy(char *dst, const char *src, size_t siz);
  size_t OPENSSL_strlcat(char *dst, const char *src, size_t siz);
  size_t OPENSSL_strnlen(const char *str, size_t maxlen);
  char *OPENSSL_buf2hexstr(const unsigned char *buffer, long len);
  unsigned char *OPENSSL_hexstr2buf(const char *str, long *len);
  int OPENSSL_hexchar2int(unsigned char c);
  
  # define OPENSSL_MALLOC_MAX_NELEMS(type)  (((1U<<(sizeof(int)*8-1))-1)/sizeof(type))
  
  unsigned long OpenSSL_version_num(void);
  const char *OpenSSL_version(int type);
  # define OPENSSL_VERSION          0
  # define OPENSSL_CFLAGS           1
  # define OPENSSL_BUILT_ON         2
  # define OPENSSL_PLATFORM         3
  # define OPENSSL_DIR              4
  # define OPENSSL_ENGINES_DIR      5
  
  int OPENSSL_issetugid(void);
  
  typedef void CRYPTO_EX_new (void *parent, void *ptr, CRYPTO_EX_DATA *ad,
                             int idx, long argl, void *argp);
  typedef void CRYPTO_EX_free (void *parent, void *ptr, CRYPTO_EX_DATA *ad,
                               int idx, long argl, void *argp);
  typedef int CRYPTO_EX_dup (CRYPTO_EX_DATA *to, const CRYPTO_EX_DATA *from,
                             void *from_d, int idx, long argl, void *argp);
  __owur 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);
  /* No longer use an index. */
  int CRYPTO_free_ex_index(int class_index, int idx);
  
  /*
   * 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,
                         const 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);
  
  # if OPENSSL_API_COMPAT < 0x10100000L
  /*
   * This function cleans up all "ex_data" state. It mustn't be called under
   * potential race-conditions.
   */
  # define CRYPTO_cleanup_all_ex_data() while(0) continue
  
  /*
   * The old locking functions have been removed completely without compatibility
   * macros. This is because the old functions either could not properly report
   * errors, or the returned error values were not clearly documented.
   * Replacing the locking functions with no-ops would cause race condition
   * issues in the affected applications. It is far better for them to fail at
   * compile time.
   * On the other hand, the locking callbacks are no longer used.  Consequently,
   * the callback management functions can be safely replaced with no-op macros.
   */
  #  define CRYPTO_num_locks()            (1)
  #  define CRYPTO_set_locking_callback(func)
  #  define CRYPTO_get_locking_callback()         (NULL)
  #  define CRYPTO_set_add_lock_callback(func)
  #  define CRYPTO_get_add_lock_callback()        (NULL)
  
  /*
   * These defines where used in combination with the old locking callbacks,
   * they are not called anymore, but old code that's not called might still
   * use them.
   */
  #  define CRYPTO_LOCK             1
  #  define CRYPTO_UNLOCK           2
  #  define CRYPTO_READ             4
  #  define CRYPTO_WRITE            8
  
  /* This structure is no longer used */
  typedef struct crypto_threadid_st {
      int dummy;
  } CRYPTO_THREADID;
  /* Only use CRYPTO_THREADID_set_[numeric|pointer]() within callbacks */
  #  define CRYPTO_THREADID_set_numeric(id, val)
  #  define CRYPTO_THREADID_set_pointer(id, ptr)
  #  define CRYPTO_THREADID_set_callback(threadid_func)   (0)
  #  define CRYPTO_THREADID_get_callback()                (NULL)
  #  define CRYPTO_THREADID_current(id)
  #  define CRYPTO_THREADID_cmp(a, b)                     (-1)
  #  define CRYPTO_THREADID_cpy(dest, src)
  #  define CRYPTO_THREADID_hash(id)                      (0UL)
  
  #  if OPENSSL_API_COMPAT < 0x10000000L
  #   define CRYPTO_set_id_callback(func)
  #   define CRYPTO_get_id_callback()                     (NULL)
  #   define CRYPTO_thread_id()                           (0UL)
  #  endif /* OPENSSL_API_COMPAT < 0x10000000L */
  
  #  define CRYPTO_set_dynlock_create_callback(dyn_create_function)
  #  define CRYPTO_set_dynlock_lock_callback(dyn_lock_function)
  #  define CRYPTO_set_dynlock_destroy_callback(dyn_destroy_function)
  #  define CRYPTO_get_dynlock_create_callback()          (NULL)
  #  define CRYPTO_get_dynlock_lock_callback()            (NULL)
  #  define CRYPTO_get_dynlock_destroy_callback()         (NULL)
  # endif /* OPENSSL_API_COMPAT < 0x10100000L */
  
  int CRYPTO_set_mem_functions(
          void *(*m) (size_t, const char *, int),
          void *(*r) (void *, size_t, const char *, int),
          void (*f) (void *, const char *, int));
  int CRYPTO_set_mem_debug(int flag);
  void CRYPTO_get_mem_functions(
          void *(**m) (size_t, const char *, int),
          void *(**r) (void *, size_t, const char *, int),
          void (**f) (void *, const char *, int));
  
  void *CRYPTO_malloc(size_t num, const char *file, int line);
  void *CRYPTO_zalloc(size_t num, const char *file, int line);
  void *CRYPTO_memdup(const void *str, size_t siz, const char *file, int line);
  char *CRYPTO_strdup(const char *str, const char *file, int line);
  char *CRYPTO_strndup(const char *str, size_t s, const char *file, int line);
  void CRYPTO_free(void *ptr, const char *file, int line);
  void CRYPTO_clear_free(void *ptr, size_t num, const char *file, int line);
  void *CRYPTO_realloc(void *addr, size_t num, const char *file, int line);
  void *CRYPTO_clear_realloc(void *addr, size_t old_num, size_t num,
                             const char *file, int line);
  
  int CRYPTO_secure_malloc_init(size_t sz, int minsize);
  int CRYPTO_secure_malloc_done(void);
  void *CRYPTO_secure_malloc(size_t num, const char *file, int line);
  void *CRYPTO_secure_zalloc(size_t num, const char *file, int line);
  void CRYPTO_secure_free(void *ptr, const char *file, int line);
  void CRYPTO_secure_clear_free(void *ptr, size_t num,
                                const char *file, int line);
  int CRYPTO_secure_allocated(const void *ptr);
  int CRYPTO_secure_malloc_initialized(void);
  size_t CRYPTO_secure_actual_size(void *ptr);
  size_t CRYPTO_secure_used(void);
  
  void OPENSSL_cleanse(void *ptr, size_t len);
  
  # ifndef OPENSSL_NO_CRYPTO_MDEBUG
  #  define OPENSSL_mem_debug_push(info) \
          CRYPTO_mem_debug_push(info, OPENSSL_FILE, OPENSSL_LINE)
  #  define OPENSSL_mem_debug_pop() \
          CRYPTO_mem_debug_pop()
  int CRYPTO_mem_debug_push(const char *info, const char *file, int line);
  int CRYPTO_mem_debug_pop(void);
  void CRYPTO_get_alloc_counts(int *mcount, int *rcount, int *fcount);
  
  /*-
   * Debugging functions (enabled by CRYPTO_set_mem_debug(1))
   * The flag 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_mem_debug_malloc(void *addr, size_t num, int flag,
          const char *file, int line);
  void CRYPTO_mem_debug_realloc(void *addr1, void *addr2, size_t num, int flag,
          const char *file, int line);
  void CRYPTO_mem_debug_free(void *addr, int flag,
          const char *file, int line);
  
  int CRYPTO_mem_leaks_cb(int (*cb) (const char *str, size_t len, void *u),
                          void *u);
  #  ifndef OPENSSL_NO_STDIO
  int CRYPTO_mem_leaks_fp(FILE *);
  #  endif
  int CRYPTO_mem_leaks(BIO *bio);
  # endif
  
  /* die if we have to */
  ossl_noreturn void OPENSSL_die(const char *assertion, const char *file, int line);
  # if OPENSSL_API_COMPAT < 0x10100000L
  #  define OpenSSLDie(f,l,a) OPENSSL_die((a),(f),(l))
  # endif
  # define OPENSSL_assert(e) \
      (void)((e) ? 0 : (OPENSSL_die("assertion failed: " #e, OPENSSL_FILE, OPENSSL_LINE), 1))
  
  int OPENSSL_isservice(void);
  
  int FIPS_mode(void);
  int FIPS_mode_set(int r);
  
  void OPENSSL_init(void);
  # ifdef OPENSSL_SYS_UNIX
  void OPENSSL_fork_prepare(void);
  void OPENSSL_fork_parent(void);
  void OPENSSL_fork_child(void);
  # endif
  
  struct tm *OPENSSL_gmtime(const time_t *timer, struct tm *result);
  int OPENSSL_gmtime_adj(struct tm *tm, int offset_day, long offset_sec);
  int OPENSSL_gmtime_diff(int *pday, int *psec,
                          const struct tm *from, const struct tm *to);
  
  /*
   * CRYPTO_memcmp returns zero iff the |len| bytes at |a| and |b| are equal.
   * It takes an amount of time dependent on |len|, but independent of the
   * contents of |a| and |b|. Unlike memcmp, it cannot be used to put elements
   * into a defined order as the return value when a != b is undefined, other
   * than to be non-zero.
   */
  int CRYPTO_memcmp(const void * in_a, const void * in_b, size_t len);
  
  /* Standard initialisation options */
  # define OPENSSL_INIT_NO_LOAD_CRYPTO_STRINGS 0x00000001L
  # define OPENSSL_INIT_LOAD_CRYPTO_STRINGS    0x00000002L
  # define OPENSSL_INIT_ADD_ALL_CIPHERS        0x00000004L
  # define OPENSSL_INIT_ADD_ALL_DIGESTS        0x00000008L
  # define OPENSSL_INIT_NO_ADD_ALL_CIPHERS     0x00000010L
  # define OPENSSL_INIT_NO_ADD_ALL_DIGESTS     0x00000020L
  # define OPENSSL_INIT_LOAD_CONFIG            0x00000040L
  # define OPENSSL_INIT_NO_LOAD_CONFIG         0x00000080L
  # define OPENSSL_INIT_ASYNC                  0x00000100L
  # define OPENSSL_INIT_ENGINE_RDRAND          0x00000200L
  # define OPENSSL_INIT_ENGINE_DYNAMIC         0x00000400L
  # define OPENSSL_INIT_ENGINE_OPENSSL         0x00000800L
  # define OPENSSL_INIT_ENGINE_CRYPTODEV       0x00001000L
  # define OPENSSL_INIT_ENGINE_CAPI            0x00002000L
  # define OPENSSL_INIT_ENGINE_PADLOCK         0x00004000L
  # define OPENSSL_INIT_ENGINE_AFALG           0x00008000L
  /* OPENSSL_INIT_ZLIB                         0x00010000L */
  # define OPENSSL_INIT_ATFORK                 0x00020000L
  /* OPENSSL_INIT_BASE_ONLY                    0x00040000L */
  # define OPENSSL_INIT_NO_ATEXIT              0x00080000L
  /* OPENSSL_INIT flag range 0xfff00000 reserved for OPENSSL_init_ssl() */
  /* Max OPENSSL_INIT flag value is 0x80000000 */
  
  /* openssl and dasync not counted as builtin */
  # define OPENSSL_INIT_ENGINE_ALL_BUILTIN \
      (OPENSSL_INIT_ENGINE_RDRAND | OPENSSL_INIT_ENGINE_DYNAMIC \
      | OPENSSL_INIT_ENGINE_CRYPTODEV | OPENSSL_INIT_ENGINE_CAPI | \
      OPENSSL_INIT_ENGINE_PADLOCK)
  
  
  /* Library initialisation functions */
  void OPENSSL_cleanup(void);
  int OPENSSL_init_crypto(uint64_t opts, const OPENSSL_INIT_SETTINGS *settings);
  int OPENSSL_atexit(void (*handler)(void));
  void OPENSSL_thread_stop(void);
  
  /* Low-level control of initialization */
  OPENSSL_INIT_SETTINGS *OPENSSL_INIT_new(void);
  # ifndef OPENSSL_NO_STDIO
  int OPENSSL_INIT_set_config_filename(OPENSSL_INIT_SETTINGS *settings,
                                       const char *config_filename);
  void OPENSSL_INIT_set_config_file_flags(OPENSSL_INIT_SETTINGS *settings,
                                          unsigned long flags);
  int OPENSSL_INIT_set_config_appname(OPENSSL_INIT_SETTINGS *settings,
                                      const char *config_appname);
  # endif
  void OPENSSL_INIT_free(OPENSSL_INIT_SETTINGS *settings);
  
  # if defined(OPENSSL_THREADS) && !defined(CRYPTO_TDEBUG)
  #  if defined(_WIN32)
  #   if defined(BASETYPES) || defined(_WINDEF_H)
  /* application has to include <windows.h> in order to use this */
  typedef DWORD CRYPTO_THREAD_LOCAL;
  typedef DWORD CRYPTO_THREAD_ID;
  
  typedef LONG CRYPTO_ONCE;
  #    define CRYPTO_ONCE_STATIC_INIT 0
  #   endif
  #  else
  #   include <pthread.h>
  typedef pthread_once_t CRYPTO_ONCE;
  typedef pthread_key_t CRYPTO_THREAD_LOCAL;
  typedef pthread_t CRYPTO_THREAD_ID;
  
  #   define CRYPTO_ONCE_STATIC_INIT PTHREAD_ONCE_INIT
  #  endif
  # endif
  
  # if !defined(CRYPTO_ONCE_STATIC_INIT)
  typedef unsigned int CRYPTO_ONCE;
  typedef unsigned int CRYPTO_THREAD_LOCAL;
  typedef unsigned int CRYPTO_THREAD_ID;
  #  define CRYPTO_ONCE_STATIC_INIT 0
  # endif
  
  int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void));
  
  int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *));
  void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key);
  int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val);
  int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key);
  
  CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void);
  int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b);
  
  # ifdef  __cplusplus
  }
  # endif
  #endif
  