text: /*
   * Copyright 1995-2019 The OpenSSL Project Authors. 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
   */
  
  /*
   * Header for dynamic hash table routines Author - Eric Young
   */
  
  #ifndef HEADER_LHASH_H
  # define HEADER_LHASH_H
  
  # include <openssl/e_os2.h>
  # include <openssl/bio.h>
  
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  typedef struct lhash_node_st OPENSSL_LH_NODE;
  typedef int (*OPENSSL_LH_COMPFUNC) (const void *, const void *);
  typedef unsigned long (*OPENSSL_LH_HASHFUNC) (const void *);
  typedef void (*OPENSSL_LH_DOALL_FUNC) (void *);
  typedef void (*OPENSSL_LH_DOALL_FUNCARG) (void *, void *);
  typedef struct lhash_st OPENSSL_LHASH;
  
  /*
   * Macros for declaring and implementing type-safe wrappers for LHASH
   * callbacks. This way, callbacks can be provided to LHASH structures without
   * function pointer casting and the macro-defined callbacks provide
   * per-variable casting before deferring to the underlying type-specific
   * callbacks. NB: It is possible to place a "static" in front of both the
   * DECLARE and IMPLEMENT macros if the functions are strictly internal.
   */
  
  /* First: "hash" functions */
  # define DECLARE_LHASH_HASH_FN(name, o_type) \
          unsigned long name##_LHASH_HASH(const void *);
  # define IMPLEMENT_LHASH_HASH_FN(name, o_type) \
          unsigned long name##_LHASH_HASH(const void *arg) { \
                  const o_type *a = arg; \
                  return name##_hash(a); }
  # define LHASH_HASH_FN(name) name##_LHASH_HASH
  
  /* Second: "compare" functions */
  # define DECLARE_LHASH_COMP_FN(name, o_type) \
          int name##_LHASH_COMP(const void *, const void *);
  # define IMPLEMENT_LHASH_COMP_FN(name, o_type) \
          int name##_LHASH_COMP(const void *arg1, const void *arg2) { \
                  const o_type *a = arg1;             \
                  const o_type *b = arg2; \
                  return name##_cmp(a,b); }
  # define LHASH_COMP_FN(name) name##_LHASH_COMP
  
  /* Fourth: "doall_arg" functions */
  # define DECLARE_LHASH_DOALL_ARG_FN(name, o_type, a_type) \
          void name##_LHASH_DOALL_ARG(void *, void *);
  # define IMPLEMENT_LHASH_DOALL_ARG_FN(name, o_type, a_type) \
          void name##_LHASH_DOALL_ARG(void *arg1, void *arg2) { \
                  o_type *a = arg1; \
                  a_type *b = arg2; \
                  name##_doall_arg(a, b); }
  # define LHASH_DOALL_ARG_FN(name) name##_LHASH_DOALL_ARG
  
  
  # define LH_LOAD_MULT    256
  
  int OPENSSL_LH_error(OPENSSL_LHASH *lh);
  OPENSSL_LHASH *OPENSSL_LH_new(OPENSSL_LH_HASHFUNC h, OPENSSL_LH_COMPFUNC c);
  void OPENSSL_LH_free(OPENSSL_LHASH *lh);
  void *OPENSSL_LH_insert(OPENSSL_LHASH *lh, void *data);
  void *OPENSSL_LH_delete(OPENSSL_LHASH *lh, const void *data);
  void *OPENSSL_LH_retrieve(OPENSSL_LHASH *lh, const void *data);
  void OPENSSL_LH_doall(OPENSSL_LHASH *lh, OPENSSL_LH_DOALL_FUNC func);
  void OPENSSL_LH_doall_arg(OPENSSL_LHASH *lh, OPENSSL_LH_DOALL_FUNCARG func, void *arg);
  unsigned long OPENSSL_LH_strhash(const char *c);
  unsigned long OPENSSL_LH_num_items(const OPENSSL_LHASH *lh);
  unsigned long OPENSSL_LH_get_down_load(const OPENSSL_LHASH *lh);
  void OPENSSL_LH_set_down_load(OPENSSL_LHASH *lh, unsigned long down_load);
  
  # ifndef OPENSSL_NO_STDIO
  void OPENSSL_LH_stats(const OPENSSL_LHASH *lh, FILE *fp);
  void OPENSSL_LH_node_stats(const OPENSSL_LHASH *lh, FILE *fp);
  void OPENSSL_LH_node_usage_stats(const OPENSSL_LHASH *lh, FILE *fp);
  # endif
  void OPENSSL_LH_stats_bio(const OPENSSL_LHASH *lh, BIO *out);
  void OPENSSL_LH_node_stats_bio(const OPENSSL_LHASH *lh, BIO *out);
  void OPENSSL_LH_node_usage_stats_bio(const OPENSSL_LHASH *lh, BIO *out);
  
  # if OPENSSL_API_COMPAT < 0x10100000L
  #  define _LHASH OPENSSL_LHASH
  #  define LHASH_NODE OPENSSL_LH_NODE
  #  define lh_error OPENSSL_LH_error
  #  define lh_new OPENSSL_LH_new
  #  define lh_free OPENSSL_LH_free
  #  define lh_insert OPENSSL_LH_insert
  #  define lh_delete OPENSSL_LH_delete
  #  define lh_retrieve OPENSSL_LH_retrieve
  #  define lh_doall OPENSSL_LH_doall
  #  define lh_doall_arg OPENSSL_LH_doall_arg
  #  define lh_strhash OPENSSL_LH_strhash
  #  define lh_num_items OPENSSL_LH_num_items
  #  ifndef OPENSSL_NO_STDIO
  #   define lh_stats OPENSSL_LH_stats
  #   define lh_node_stats OPENSSL_LH_node_stats
  #   define lh_node_usage_stats OPENSSL_LH_node_usage_stats
  #  endif
  #  define lh_stats_bio OPENSSL_LH_stats_bio
  #  define lh_node_stats_bio OPENSSL_LH_node_stats_bio
  #  define lh_node_usage_stats_bio OPENSSL_LH_node_usage_stats_bio
  # endif
  
  /* Type checking... */
  
  # define LHASH_OF(type) struct lhash_st_##type
  
  # define DEFINE_LHASH_OF(type) \
      LHASH_OF(type) { union lh_##type##_dummy { void* d1; unsigned long d2; int d3; } dummy; }; \
      static ossl_inline LHASH_OF(type) * \
          lh_##type##_new(unsigned long (*hfn)(const type *), \
                          int (*cfn)(const type *, const type *)) \
      { \
          return (LHASH_OF(type) *) \
              OPENSSL_LH_new((OPENSSL_LH_HASHFUNC)hfn, (OPENSSL_LH_COMPFUNC)cfn); \
      } \
      static ossl_unused ossl_inline void lh_##type##_free(LHASH_OF(type) *lh) \
      { \
          OPENSSL_LH_free((OPENSSL_LHASH *)lh); \
      } \
      static ossl_unused ossl_inline type *lh_##type##_insert(LHASH_OF(type) *lh, type *d) \
      { \
          return (type *)OPENSSL_LH_insert((OPENSSL_LHASH *)lh, d); \
      } \
      static ossl_unused ossl_inline type *lh_##type##_delete(LHASH_OF(type) *lh, const type *d) \
      { \
          return (type *)OPENSSL_LH_delete((OPENSSL_LHASH *)lh, d); \
      } \
      static ossl_unused ossl_inline type *lh_##type##_retrieve(LHASH_OF(type) *lh, const type *d) \
      { \
          return (type *)OPENSSL_LH_retrieve((OPENSSL_LHASH *)lh, d); \
      } \
      static ossl_unused ossl_inline int lh_##type##_error(LHASH_OF(type) *lh) \
      { \
          return OPENSSL_LH_error((OPENSSL_LHASH *)lh); \
      } \
      static ossl_unused ossl_inline unsigned long lh_##type##_num_items(LHASH_OF(type) *lh) \
      { \
          return OPENSSL_LH_num_items((OPENSSL_LHASH *)lh); \
      } \
      static ossl_unused ossl_inline void lh_##type##_node_stats_bio(const LHASH_OF(type) *lh, BIO *out) \
      { \
          OPENSSL_LH_node_stats_bio((const OPENSSL_LHASH *)lh, out); \
      } \
      static ossl_unused ossl_inline void lh_##type##_node_usage_stats_bio(const LHASH_OF(type) *lh, BIO *out) \
      { \
          OPENSSL_LH_node_usage_stats_bio((const OPENSSL_LHASH *)lh, out); \
      } \
      static ossl_unused ossl_inline void lh_##type##_stats_bio(const LHASH_OF(type) *lh, BIO *out) \
      { \
          OPENSSL_LH_stats_bio((const OPENSSL_LHASH *)lh, out); \
      } \
      static ossl_unused ossl_inline unsigned long lh_##type##_get_down_load(LHASH_OF(type) *lh) \
      { \
          return OPENSSL_LH_get_down_load((OPENSSL_LHASH *)lh); \
      } \
      static ossl_unused ossl_inline void lh_##type##_set_down_load(LHASH_OF(type) *lh, unsigned long dl) \
      { \
          OPENSSL_LH_set_down_load((OPENSSL_LHASH *)lh, dl); \
      } \
      static ossl_unused ossl_inline void lh_##type##_doall(LHASH_OF(type) *lh, \
                                                            void (*doall)(type *)) \
      { \
          OPENSSL_LH_doall((OPENSSL_LHASH *)lh, (OPENSSL_LH_DOALL_FUNC)doall); \
      } \
      LHASH_OF(type)
  
  #define IMPLEMENT_LHASH_DOALL_ARG_CONST(type, argtype) \
      int_implement_lhash_doall(type, argtype, const type)
  
  #define IMPLEMENT_LHASH_DOALL_ARG(type, argtype) \
      int_implement_lhash_doall(type, argtype, type)
  
  #define int_implement_lhash_doall(type, argtype, cbargtype) \
      static ossl_unused ossl_inline void \
          lh_##type##_doall_##argtype(LHASH_OF(type) *lh, \
                                     void (*fn)(cbargtype *, argtype *), \
                                     argtype *arg) \
      { \
          OPENSSL_LH_doall_arg((OPENSSL_LHASH *)lh, (OPENSSL_LH_DOALL_FUNCARG)fn, (void *)arg); \
      } \
      LHASH_OF(type)
  
  DEFINE_LHASH_OF(OPENSSL_STRING);
  # ifdef _MSC_VER
  /*
   * push and pop this warning:
   *   warning C4090: 'function': different 'const' qualifiers
   */
  #  pragma warning (push)
  #  pragma warning (disable: 4090)
  # endif
  
  DEFINE_LHASH_OF(OPENSSL_CSTRING);
  
  # ifdef _MSC_VER
  #  pragma warning (pop)
  # endif
  
  /*
   * If called without higher optimization (min. -xO3) the Oracle Developer
   * Studio compiler generates code for the defined (static inline) functions
   * above.
   * This would later lead to the linker complaining about missing symbols when
   * this header file is included but the resulting object is not linked against
   * the Crypto library (openssl#6912).
   */
  # ifdef __SUNPRO_C
  #  pragma weak OPENSSL_LH_new
  #  pragma weak OPENSSL_LH_free
  #  pragma weak OPENSSL_LH_insert
  #  pragma weak OPENSSL_LH_delete
  #  pragma weak OPENSSL_LH_retrieve
  #  pragma weak OPENSSL_LH_error
  #  pragma weak OPENSSL_LH_num_items
  #  pragma weak OPENSSL_LH_node_stats_bio
  #  pragma weak OPENSSL_LH_node_usage_stats_bio
  #  pragma weak OPENSSL_LH_stats_bio
  #  pragma weak OPENSSL_LH_get_down_load
  #  pragma weak OPENSSL_LH_set_down_load
  #  pragma weak OPENSSL_LH_doall
  #  pragma weak OPENSSL_LH_doall_arg
  # endif /* __SUNPRO_C */
  
  #ifdef  __cplusplus
  }
  #endif
  
  #endif
  