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include/crypto/sparse_array.h
112 строк
9 KB
Nikola Pajkovsky
sparse_array: avoid ubsan violation in typed doall
03 май 2026, 18:17
03 май 2026, 18:17
d4da2e7
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/* * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved. * Copyright (c) 2019, Oracle and/or its affiliates. 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 */ #ifndef OSSL_CRYPTO_SPARSE_ARRAY_H #define OSSL_CRYPTO_SPARSE_ARRAY_H #pragma once #include <openssl/e_os2.h> #ifdef __cplusplus extern "C" { #endif #define SPARSE_ARRAY_OF(type) struct sparse_array_st_##type #define DEFINE_SPARSE_ARRAY_OF_INTERNAL(type, ctype) \ SPARSE_ARRAY_OF(type); \ typedef void (*sa_##type##_leaffunc)(ossl_uintmax_t idx, type *t); \ typedef void (*sa_##type##_leaffunc_arg)(ossl_uintmax_t idx, type *t, void *arg); \ static ossl_unused ossl_inline SPARSE_ARRAY_OF(type) * ossl_sa_##type##_new(void) \ { \ return (SPARSE_ARRAY_OF(type) *)ossl_sa_new(); \ } \ static ossl_unused ossl_inline void \ ossl_sa_##type##_free(SPARSE_ARRAY_OF(type) * sa) \ { \ ossl_sa_free((OPENSSL_SA *)sa); \ } \ static ossl_unused ossl_inline void \ ossl_sa_##type##_free_leaves(SPARSE_ARRAY_OF(type) * sa) \ { \ ossl_sa_free_leaves((OPENSSL_SA *)sa); \ } \ static ossl_unused ossl_inline size_t \ ossl_sa_##type##_num(const SPARSE_ARRAY_OF(type) * sa) \ { \ return ossl_sa_num((OPENSSL_SA *)sa); \ } \ static ossl_unused void \ ossl_sa_##type##_doall_thunk(ossl_uintmax_t idx, void *leaf, void *arg) \ { \ sa_##type##_leaffunc fn = *(sa_##type##_leaffunc *)arg; \ (*fn)(idx, (type *)leaf); \ } \ static ossl_unused ossl_inline void \ ossl_sa_##type##_doall(const SPARSE_ARRAY_OF(type) * sa, \ void (*leaf)(ossl_uintmax_t, type *)) \ { \ ossl_sa_doall_arg((OPENSSL_SA *)sa, ossl_sa_##type##_doall_thunk, &leaf); \ } \ struct ossl_sa_##type##_doall_thunk { \ sa_##type##_leaffunc_arg fn; \ void *arg; \ }; \ static ossl_unused void \ ossl_sa_##type##_doall_arg_thunk(ossl_uintmax_t idx, void *leaf, void *arg) \ { \ struct ossl_sa_##type##_doall_thunk *t = arg; \ \ (*t->fn)(idx, (type *)leaf, t->arg); \ } \ static ossl_unused ossl_inline void \ ossl_sa_##type##_doall_arg(const SPARSE_ARRAY_OF(type) * sa, \ void (*leaf)(ossl_uintmax_t, type *, void *), \ void *arg) \ { \ struct ossl_sa_##type##_doall_thunk t; \ \ t.fn = leaf; \ t.arg = arg; \ ossl_sa_doall_arg((OPENSSL_SA *)sa, \ ossl_sa_##type##_doall_arg_thunk, &t); \ } \ static ossl_unused ossl_inline ctype *ossl_sa_##type##_get(const SPARSE_ARRAY_OF(type) * sa, ossl_uintmax_t n) \ { \ return (type *)ossl_sa_get((OPENSSL_SA *)sa, n); \ } \ static ossl_unused ossl_inline int \ ossl_sa_##type##_set(SPARSE_ARRAY_OF(type) * sa, \ ossl_uintmax_t n, ctype *val) \ { \ return ossl_sa_set((OPENSSL_SA *)sa, n, (void *)val); \ } \ SPARSE_ARRAY_OF(type) #define DEFINE_SPARSE_ARRAY_OF(type) \ DEFINE_SPARSE_ARRAY_OF_INTERNAL(type, type) #define DEFINE_SPARSE_ARRAY_OF_CONST(type) \ DEFINE_SPARSE_ARRAY_OF_INTERNAL(type, const type) typedef struct sparse_array_st OPENSSL_SA; OPENSSL_SA *ossl_sa_new(void); void ossl_sa_free(OPENSSL_SA *sa); void ossl_sa_free_leaves(OPENSSL_SA *sa); size_t ossl_sa_num(const OPENSSL_SA *sa); void ossl_sa_doall(const OPENSSL_SA *sa, void (*leaf)(ossl_uintmax_t, void *)); void ossl_sa_doall_arg(const OPENSSL_SA *sa, void (*leaf)(ossl_uintmax_t, void *, void *), void *); void *ossl_sa_get(const OPENSSL_SA *sa, ossl_uintmax_t n); int ossl_sa_set(OPENSSL_SA *sa, ossl_uintmax_t n, void *val); #ifdef __cplusplus } #endif #endif