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lhash.h
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/* * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the Apache License 2.0 (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 OPENSSL_LHASH_H # define OPENSSL_LHASH_H # pragma once # include <openssl/macros.h> # ifndef OPENSSL_NO_DEPRECATED_3_0 # define HEADER_LHASH_H # endif # include <openssl/e_os2.h> # include <openssl/bio.h> # ifndef OPENSSL_NO_STDIO # include <stdio.h> # endif #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_flush(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 # ifndef OPENSSL_NO_DEPRECATED_3_1 OSSL_DEPRECATEDIN_3_1 void OPENSSL_LH_stats(const OPENSSL_LHASH *lh, FILE *fp); OSSL_DEPRECATEDIN_3_1 void OPENSSL_LH_node_stats(const OPENSSL_LHASH *lh, FILE *fp); OSSL_DEPRECATEDIN_3_1 void OPENSSL_LH_node_usage_stats(const OPENSSL_LHASH *lh, FILE *fp); # endif # endif # ifndef OPENSSL_NO_DEPRECATED_3_1 OSSL_DEPRECATEDIN_3_1 void OPENSSL_LH_stats_bio(const OPENSSL_LHASH *lh, BIO *out); OSSL_DEPRECATEDIN_3_1 void OPENSSL_LH_node_stats_bio(const OPENSSL_LHASH *lh, BIO *out); OSSL_DEPRECATEDIN_3_1 void OPENSSL_LH_node_usage_stats_bio(const OPENSSL_LHASH *lh, BIO *out); # endif # ifndef OPENSSL_NO_DEPRECATED_1_1_0 # 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 /* Helper macro for internal use */ # define DEFINE_LHASH_OF_INTERNAL(type) \ LHASH_OF(type) { \ union lh_##type##_dummy { void* d1; unsigned long d2; int d3; } dummy; \ }; \ typedef int (*lh_##type##_compfunc)(const type *a, const type *b); \ typedef unsigned long (*lh_##type##_hashfunc)(const type *a); \ typedef void (*lh_##type##_doallfunc)(type *a); \ static ossl_unused ossl_inline type *\ ossl_check_##type##_lh_plain_type(type *ptr) \ { \ return ptr; \ } \ static ossl_unused ossl_inline const type * \ ossl_check_const_##type##_lh_plain_type(const type *ptr) \ { \ return ptr; \ } \ static ossl_unused ossl_inline const OPENSSL_LHASH * \ ossl_check_const_##type##_lh_type(const LHASH_OF(type) *lh) \ { \ return (const OPENSSL_LHASH *)lh; \ } \ static ossl_unused ossl_inline OPENSSL_LHASH * \ ossl_check_##type##_lh_type(LHASH_OF(type) *lh) \ { \ return (OPENSSL_LHASH *)lh; \ } \ static ossl_unused ossl_inline OPENSSL_LH_COMPFUNC \ ossl_check_##type##_lh_compfunc_type(lh_##type##_compfunc cmp) \ { \ return (OPENSSL_LH_COMPFUNC)cmp; \ } \ static ossl_unused ossl_inline OPENSSL_LH_HASHFUNC \ ossl_check_##type##_lh_hashfunc_type(lh_##type##_hashfunc hfn) \ { \ return (OPENSSL_LH_HASHFUNC)hfn; \ } \ static ossl_unused ossl_inline OPENSSL_LH_DOALL_FUNC \ ossl_check_##type##_lh_doallfunc_type(lh_##type##_doallfunc dfn) \ { \ return (OPENSSL_LH_DOALL_FUNC)dfn; \ } \ LHASH_OF(type) # ifndef OPENSSL_NO_DEPRECATED_3_1 # define DEFINE_LHASH_OF_DEPRECATED(type) \ 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); \ } # else # define DEFINE_LHASH_OF_DEPRECATED(type) # endif # define DEFINE_LHASH_OF_EX(type) \ LHASH_OF(type) { \ union lh_##type##_dummy { void* d1; unsigned long d2; int d3; } dummy; \ }; \ static ossl_unused 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 void \ lh_##type##_flush(LHASH_OF(type) *lh) \ { \ OPENSSL_LH_flush((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 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); \ } \ static ossl_unused ossl_inline void \ lh_##type##_doall_arg(LHASH_OF(type) *lh, \ void (*doallarg)(type *, void *), void *arg) \ { \ OPENSSL_LH_doall_arg((OPENSSL_LHASH *)lh, \ (OPENSSL_LH_DOALL_FUNCARG)doallarg, arg); \ } \ LHASH_OF(type) # define DEFINE_LHASH_OF(type) \ DEFINE_LHASH_OF_EX(type); \ DEFINE_LHASH_OF_DEPRECATED(type) \ 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_INTERNAL(OPENSSL_STRING); #define lh_OPENSSL_STRING_new(hfn, cmp) ((LHASH_OF(OPENSSL_STRING) *)OPENSSL_LH_new(ossl_check_OPENSSL_STRING_lh_hashfunc_type(hfn), ossl_check_OPENSSL_STRING_lh_compfunc_type(cmp))) #define lh_OPENSSL_STRING_free(lh) OPENSSL_LH_free(ossl_check_OPENSSL_STRING_lh_type(lh)) #define lh_OPENSSL_STRING_flush(lh) OPENSSL_LH_flush(ossl_check_OPENSSL_STRING_lh_type(lh)) #define lh_OPENSSL_STRING_insert(lh, ptr) ((OPENSSL_STRING *)OPENSSL_LH_insert(ossl_check_OPENSSL_STRING_lh_type(lh), ossl_check_OPENSSL_STRING_lh_plain_type(ptr))) #define lh_OPENSSL_STRING_delete(lh, ptr) ((OPENSSL_STRING *)OPENSSL_LH_delete(ossl_check_OPENSSL_STRING_lh_type(lh), ossl_check_const_OPENSSL_STRING_lh_plain_type(ptr))) #define lh_OPENSSL_STRING_retrieve(lh, ptr) ((OPENSSL_STRING *)OPENSSL_LH_retrieve(ossl_check_OPENSSL_STRING_lh_type(lh), ossl_check_const_OPENSSL_STRING_lh_plain_type(ptr))) #define lh_OPENSSL_STRING_error(lh) OPENSSL_LH_error(ossl_check_OPENSSL_STRING_lh_type(lh)) #define lh_OPENSSL_STRING_num_items(lh) OPENSSL_LH_num_items(ossl_check_OPENSSL_STRING_lh_type(lh)) #define lh_OPENSSL_STRING_node_stats_bio(lh, out) OPENSSL_LH_node_stats_bio(ossl_check_const_OPENSSL_STRING_lh_type(lh), out) #define lh_OPENSSL_STRING_node_usage_stats_bio(lh, out) OPENSSL_LH_node_usage_stats_bio(ossl_check_const_OPENSSL_STRING_lh_type(lh), out) #define lh_OPENSSL_STRING_stats_bio(lh, out) OPENSSL_LH_stats_bio(ossl_check_const_OPENSSL_STRING_lh_type(lh), out) #define lh_OPENSSL_STRING_get_down_load(lh) OPENSSL_LH_get_down_load(ossl_check_OPENSSL_STRING_lh_type(lh)) #define lh_OPENSSL_STRING_set_down_load(lh, dl) OPENSSL_LH_set_down_load(ossl_check_OPENSSL_STRING_lh_type(lh), dl) #define lh_OPENSSL_STRING_doall(lh, dfn) OPENSSL_LH_doall(ossl_check_OPENSSL_STRING_lh_type(lh), ossl_check_OPENSSL_STRING_lh_doallfunc_type(dfn)) DEFINE_LHASH_OF_INTERNAL(OPENSSL_CSTRING); #define lh_OPENSSL_CSTRING_new(hfn, cmp) ((LHASH_OF(OPENSSL_CSTRING) *)OPENSSL_LH_new(ossl_check_OPENSSL_CSTRING_lh_hashfunc_type(hfn), ossl_check_OPENSSL_CSTRING_lh_compfunc_type(cmp))) #define lh_OPENSSL_CSTRING_free(lh) OPENSSL_LH_free(ossl_check_OPENSSL_CSTRING_lh_type(lh)) #define lh_OPENSSL_CSTRING_flush(lh) OPENSSL_LH_flush(ossl_check_OPENSSL_CSTRING_lh_type(lh)) #define lh_OPENSSL_CSTRING_insert(lh, ptr) ((OPENSSL_CSTRING *)OPENSSL_LH_insert(ossl_check_OPENSSL_CSTRING_lh_type(lh), ossl_check_OPENSSL_CSTRING_lh_plain_type(ptr))) #define lh_OPENSSL_CSTRING_delete(lh, ptr) ((OPENSSL_CSTRING *)OPENSSL_LH_delete(ossl_check_OPENSSL_CSTRING_lh_type(lh), ossl_check_const_OPENSSL_CSTRING_lh_plain_type(ptr))) #define lh_OPENSSL_CSTRING_retrieve(lh, ptr) ((OPENSSL_CSTRING *)OPENSSL_LH_retrieve(ossl_check_OPENSSL_CSTRING_lh_type(lh), ossl_check_const_OPENSSL_CSTRING_lh_plain_type(ptr))) #define lh_OPENSSL_CSTRING_error(lh) OPENSSL_LH_error(ossl_check_OPENSSL_CSTRING_lh_type(lh)) #define lh_OPENSSL_CSTRING_num_items(lh) OPENSSL_LH_num_items(ossl_check_OPENSSL_CSTRING_lh_type(lh)) #define lh_OPENSSL_CSTRING_node_stats_bio(lh, out) OPENSSL_LH_node_stats_bio(ossl_check_const_OPENSSL_CSTRING_lh_type(lh), out) #define lh_OPENSSL_CSTRING_node_usage_stats_bio(lh, out) OPENSSL_LH_node_usage_stats_bio(ossl_check_const_OPENSSL_CSTRING_lh_type(lh), out) #define lh_OPENSSL_CSTRING_stats_bio(lh, out) OPENSSL_LH_stats_bio(ossl_check_const_OPENSSL_CSTRING_lh_type(lh), out) #define lh_OPENSSL_CSTRING_get_down_load(lh) OPENSSL_LH_get_down_load(ossl_check_OPENSSL_CSTRING_lh_type(lh)) #define lh_OPENSSL_CSTRING_set_down_load(lh, dl) OPENSSL_LH_set_down_load(ossl_check_OPENSSL_CSTRING_lh_type(lh), dl) #define lh_OPENSSL_CSTRING_doall(lh, dfn) OPENSSL_LH_doall(ossl_check_OPENSSL_CSTRING_lh_type(lh), ossl_check_OPENSSL_CSTRING_lh_doallfunc_type(dfn)) #ifdef __cplusplus } #endif #endif