3b6bb15e86
d9b8fa6098d fix: Fake broadcast address for 127.x.x.x aa649165a57 chore: Add code for future netprof TCP testing 9e5693de5ac chore: add to_string functions for netprof enums 52d915e6a90 cleanup: Heap allocate network profile objects 80fabd4a729 feat: Implement Tox network profiler 05abe083cb6 cleanup: Some random cleanups, mostly related to mem. 5cca24513b8 cleanup: Check that onion IP/Port packing worked. e092ecd1244 cleanup: Use tox memory allocator in some more places. 3cfe41c7587 fix: Avoid `memcpy`-ing structs into onion ping id data. e32ac001938 fix: Add more information on why the frame was not sent. ab887003687 fix: Allow TCP connections to fail `connect` calls. 7603170e663 refactor: Use tox memory in group connection allocations. 5bd8a85eb89 cleanup: Align internal logger with external on type of source line. e9bf524d9e1 cleanup: Add missing `#include` to sort_test.cc. d10c966b998 feat: Add `to_string` functions for toxencryptsave errors. 7bfd0dc8003 docs: Update the docs for group join functions 380dde9f2ae test: Add more logging to TCP connection constructor. 0f12f384c8c cleanup: Reduce stack frame sizes to below 4096 bytes. bc43cec0626 chore: Happy new year! fbe78f1702e cleanup: Add a `TOX_HIDE_DEPRECATED` check to hide deprecated symbols. 44d9da07e77 refactor: Use tox memory for group moderation/pack allocations. 7f26d520168 refactor: Use tox memory in group chats allocations. 2f62f3d0e77 refactor: Use tox Memory for group allocations. 8a968162041 chore: Add dispatch/events headers to bazel export. 2bbfb35abf6 docs: Output the error code string instead of int. in toxav logging d55d0e4eaef cleanup: Remove redundant code for checking if group exists 2a6dc643338 chore: Upgrade dependencies for websockify. fc0650601c1 fix: Allow peers to reconnect to group chats using a password git-subtree-dir: external/toxcore/c-toxcore git-subtree-split: d9b8fa6098de6c074038b6664d2572627540b148
109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later
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* Copyright © 2016-2025 The TokTok team.
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* Copyright © 2013 Tox project.
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* Copyright © 2013 plutooo
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*/
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/**
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* Utilities.
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*/
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#ifndef C_TOXCORE_TOXCORE_UTIL_H
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#define C_TOXCORE_TOXCORE_UTIL_H
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#include <pthread.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "attributes.h"
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#include "mem.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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bool is_power_of_2(uint64_t x);
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/** @brief Frees all pointers in a uint8_t pointer array, as well as the array itself. */
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non_null(1) nullable(2)
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void free_uint8_t_pointer_array(const Memory *mem, uint8_t **ary, size_t n_items);
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/** Returns -1 if failed or 0 if success */
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non_null() int create_recursive_mutex(pthread_mutex_t *mutex);
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/**
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* @brief Checks whether two buffers are the same length and contents.
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*
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* Calls `memcmp` after checking the sizes are equal.
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*
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* @retval true if sizes and contents are equal.
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* @retval false otherwise.
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*/
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non_null() bool memeq(const uint8_t *a, size_t a_size, const uint8_t *b, size_t b_size);
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/**
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* @brief Copies a byte array of a given size into a newly allocated one.
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*
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* @return nullptr on allocation failure or if the input data was nullptr or data_size was 0.
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*/
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non_null(1) nullable(2) uint8_t *memdup(const Memory *mem, const uint8_t *data, size_t data_size);
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/**
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* @brief Set all bytes in `data` to 0.
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*
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* NOTE: This does not securely zero out data. DO NOT USE for sensitive data. Use
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* `crypto_memzero` from `crypto_core.h`, instead. This function is ok to use for
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* message buffers, public keys, encrypted data, etc. It is not ok for buffers
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* containing key material (secret keys, shared keys).
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*/
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nullable(1) void memzero(uint8_t *data, size_t data_size);
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// Safe min/max functions with specific types. This forces the conversion to the
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// desired type before the comparison expression, giving the choice of
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// conversion to the caller. Use these instead of inline comparisons or MIN/MAX
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// macros (effectively inline comparisons).
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int16_t max_s16(int16_t a, int16_t b);
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int32_t max_s32(int32_t a, int32_t b);
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int64_t max_s64(int64_t a, int64_t b);
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int16_t min_s16(int16_t a, int16_t b);
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int32_t min_s32(int32_t a, int32_t b);
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int64_t min_s64(int64_t a, int64_t b);
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uint8_t max_u08(uint8_t a, uint8_t b);
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uint16_t max_u16(uint16_t a, uint16_t b);
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uint32_t max_u32(uint32_t a, uint32_t b);
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uint64_t max_u64(uint64_t a, uint64_t b);
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uint16_t min_u16(uint16_t a, uint16_t b);
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uint32_t min_u32(uint32_t a, uint32_t b);
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uint64_t min_u64(uint64_t a, uint64_t b);
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/**
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* Comparison function:
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* @retval -1 if `a < b`
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* @retval 0 if `a == b`
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* @retval 1 if `a > b`
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*/
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int cmp_uint(uint64_t a, uint64_t b);
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/** @brief Returns a 32-bit hash of key of size len */
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non_null()
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uint32_t jenkins_one_at_a_time_hash(const uint8_t *key, size_t len);
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/** @brief Computes a checksum of a byte array.
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*
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* @param data The byte array used to compute the checksum.
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* @param length The length in bytes of the passed data.
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*
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* @retval The resulting checksum.
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*/
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non_null()
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uint16_t data_checksum(const uint8_t *data, uint32_t length);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* C_TOXCORE_TOXCORE_UTIL_H */
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