tomato/toxcore/bin_pack.c
Green Sky aae086cc65 Squashed 'external/toxcore/c-toxcore/' changes from e2c01e457b..b03b571272
b03b571272 fix: flaky tcp test This only fixes the symptoms, not the real problem. Sometimes or consistently on some platforms a socket might need a moment before it can be written to.
32e67ab4c2 cleanup: use typedef for private message ID's in callback
7b1db6adc1 feat: add message IDs to private group messages
99e0bcc27d refactor: Observers/ignored peers can now send and receive custom packets
b3c3c49d26 fix: Disable IPv6 in Windows cross-compilation tests
e742deddff feat: Check hashes of Windows dependencies when cross-compiling
dfb9a0b02b fix: Test the current Windows Dockerfile, not an old Dockerhub image
14de93ccec chore: Use WineHQ's Wine as Debian Bookworm's crashes
ed37616249 docs: Update the Windows cross-compilation section
9bb79c174f cleanup: Remove a couple of unnecessary misc_tools dependencies
19475adb70 chore: Statically link OpenMP into the cracker fun util on Windows
1be311e51f feat: Build the fun utils when cross-compiling to Windows
88133f8446 chore: Strip Windows binaries
3cc0ae7535 refactor: Copy over all of the required static dependencies
c4fa8f7fb1 feat: Generate .def, .exp and .lib files when building for Windows
74bbac5363 feat: Let CMake create the dll instead of doing so ourselves
246642e9ae feat: Harden Windows cross-compilation
8d431c0d11 chore: Bump Windows build dependency versions
e519f7998b fix: Remove unnecessary wsock32 dependency on Windows
ed2b60c217 chore: Use a specific non-broken slimcc version.
d7f21010a1 chore: Update github actions.
e71a68b7f2 docs: Update the list of CMake options
77e08876ff chore: Remove mod and founder from group API naming scheme
12bc042767 docs: add the experimental api build option to INSTALL.md
e1fa5cae96 refactor: Rename Queries to Query to align with other enums.
be82a3ea30 fix: Correct type for conference offline peer numbers.
0627c36716 test: Add pkgsrc build.
92578afe4b test: Add FreeBSD VM action on GitHub.
52ece0f57b test: Build toxcore on NetBSD (VM).
3fe8ee2c11 chore: Only install tox_private.h on request.
9a8dfa06ab fix: save_compatibility_test failing on big-endian systems
86f5e55578 fix: Don't serve files from websockify.
710eb674a5 fix: Correctly pass extended public keys to group moderation code.
021db7031c refactor: Use `struct`s for extended public/secret keys.
a1e999fd80 chore: Compile libsodium reference implementation with compcert.
fbe3c19cf5 cleanup: correct a few nullable annotations
623e3ee5c3 cleanup: Don't use `memcpy` to cast arbitrary `struct`s to `uint8_t[]`.
c71567dc18 fix: Pass array, not array pointer, to `memcmp`.
9b46a08144 cleanup: Never pass `void*` directly to `memcpy`.
5d7b7a7bbc refactor: Use tox rng to seed the keypair generation.
961891d568 cleanup: Small improvements found by PVS Studio.
8201019f0d chore: Disable NGC saving by default, enable through Tox_Options.
5dd9ee3f65 cleanup: Replace pointer arithmetic with explicit `&arr[i]`.
ca4606d49d refactor: Use strong typedef for NGC peer id.
442213b722 cleanup: Simplify custom packet length check in NGC.
08d3393def fix: Correct a few potential null derefs in bootstrap daemon.
b9877b32b0 fix: Add missing memunlock of local variable when it goes out of scope.
dab5fe44b9 fix: Zero out stack-allocated secret key before return.
f058103299 refactor: Make prune_gc_sanctions_list more obviously correct.
3ba7a0dec9 docs: Add static analysis tool list to README.
8d0811a0f3 docs: Run prettier-markdown on markdown files.
969e3a2bfc refactor: Fix network test not using the strong typedef
93c83fbc7c refactor: Use strong typedef instead of struct for `Socket`.
9fe18b176f fix: Fix some false positive from PVS Studio.
7c44379ccb cleanup: Check that WINXP macro exists before comparing it.
5c93231bef refactor: Make tox mutex non-recursive.
aacff73939 docs: Fix up doxyfile.
d55fc85ff5 docs: Add more documentation to crypto_core.
5bdaaaedb6 refactor: Remove `Tox *` from `tox_dispatch`.
e202341e76 refactor: Don't rely on tox_dispatch passing tox in tests.
34df938f52 chore: Use C++ mode for clang-tidy.
8b05296a78 chore: Check that both gtest and gmock exist for tests.
42010660e1 test: Add slimcc compiler compatibility test.
b473630321 chore: Add some comments to the astyle config.
b7404f24f6 cleanup: Remove implicit bool conversions.
4e2dba4d9f chore: Reformat sources with astyle.
4359e3a6bc chore: Rename C++ headers to .hh suffixes.
0c05566e58 cleanup: Further `#include` cleanups.
8d29935b7a chore: Only check the bootstrap daemon checksum on release.
f70e588bc6 cleanup: Add more `const` where possible.
511bfe39c8 cleanup: Use Bazel modules to enforce proper `#include` hygiene.
1710a0d091 refactor: Move pack/unpack `IP_Port` from DHT into network module.
a975943564 chore: Really fix coverage docker image build.
c08409390f chore: Fix post-submit coverage image.
39aadf8922 fix: Don't use `memcmp` to compare `IP_Port`s.
d94246a906 fix: partially fix a bug that prevented group part messages from sending.
eeaa039222 chore: Fix rpm build; add a CI check for it.
8328449c1a chore: Speed up docker builds a bit by reducing layer count.
d6d67d56f3 cleanup: Add `const` where possible in auto tests.
6aa9e6850d cleanup: Minor cleanup of event unpack code.
bdf460a3a9 refactor: Rename `system_{memory,...}` to `os_{memory,...}`.
203e1af81e fix: a few off by one errors in group autotests
5c093c4888 cleanup: Remove all uses of `SIZEOF_VLA`.
662c2140f3 test: Add goblint static analyser.
8f07755834 cleanup: Use `memzero(x, s)` instead of `memset(x, 0, s)`.
a7258e40cf cleanup: Use explicit 0 instead of `PACKET_ID_PADDING`.
6370d0f15d cleanup: Expand the `Tox_Options` accessor macros.
14a1a0b9bd cleanup: Remove plan9 support.
a05dccad13 test: Add a simple new/delete test for Tox.
1cdcf938b9 cleanup: Add comment after every `#endif`.
ba99d4dc4b test: Fix comment I broke in the events test PR.
e07248debb refactor: Migrate auto_tests to new events API.
bdd42b5452 refactor: Add common msgpack array packer with callback.
3c659f5288 cleanup: Rename group to conference in groupav documentation.
89957be230 cleanup: Ensure handler params are named after callback params.
c650d9d345 refactor: Pass `this` pointer as first param to s11n callbacks.
e7fb91ddb8 refactor: Allow NULL pointers for byte arrays in events.
5e2c8cabc1 cleanup: make some improvements to group moderation test
259de4867e cleanup: Remove `bin_pack_{new,free}`.
21a8ff5895 cleanup: skip a do_gc iteration before removing peers marked for deletion
16809dc36e feat: Add dht_get_nodes_response event to the events system.

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: b03b5712720de9a9901ea12fd741f177327a7021
2024-03-07 23:12:55 +01:00

206 lines
4.6 KiB
C

/* SPDX-License-Identifier: GPL-3.0-or-later
* Copyright © 2022 The TokTok team.
*/
#include "bin_pack.h"
#include <assert.h>
#include <string.h>
#include "../third_party/cmp/cmp.h"
#include "attributes.h"
#include "ccompat.h"
#include "logger.h"
struct Bin_Pack {
uint8_t *bytes;
uint32_t bytes_size;
uint32_t bytes_pos;
cmp_ctx_t ctx;
};
non_null()
static bool null_reader(cmp_ctx_t *ctx, void *data, size_t limit)
{
assert(limit == 0);
return false;
}
non_null()
static bool null_skipper(cmp_ctx_t *ctx, size_t count)
{
assert(count == 0);
return false;
}
non_null()
static size_t buf_writer(cmp_ctx_t *ctx, const void *data, size_t count)
{
const uint8_t *bytes = (const uint8_t *)data;
Bin_Pack *bp = (Bin_Pack *)ctx->buf;
assert(bp != nullptr);
const uint32_t new_pos = bp->bytes_pos + count;
if (new_pos < bp->bytes_pos) {
// 32 bit overflow.
return 0;
}
if (bp->bytes != nullptr) {
if (new_pos > bp->bytes_size) {
// Buffer too small.
return 0;
}
memcpy(&bp->bytes[bp->bytes_pos], bytes, count);
}
bp->bytes_pos += count;
return count;
}
non_null(1) nullable(2)
static void bin_pack_init(Bin_Pack *bp, uint8_t *buf, uint32_t buf_size)
{
bp->bytes = buf;
bp->bytes_size = buf_size;
bp->bytes_pos = 0;
cmp_init(&bp->ctx, bp, null_reader, null_skipper, buf_writer);
}
uint32_t bin_pack_obj_size(bin_pack_cb *callback, const void *obj, const Logger *logger)
{
Bin_Pack bp;
bin_pack_init(&bp, nullptr, 0);
if (!callback(obj, logger, &bp)) {
return UINT32_MAX;
}
return bp.bytes_pos;
}
bool bin_pack_obj(bin_pack_cb *callback, const void *obj, const Logger *logger, uint8_t *buf, uint32_t buf_size)
{
Bin_Pack bp;
bin_pack_init(&bp, buf, buf_size);
return callback(obj, logger, &bp);
}
uint32_t bin_pack_obj_array_b_size(bin_pack_array_cb *callback, const void *arr, uint32_t arr_size, const Logger *logger)
{
Bin_Pack bp;
bin_pack_init(&bp, nullptr, 0);
if (arr == nullptr) {
assert(arr_size == 0);
}
for (uint32_t i = 0; i < arr_size; ++i) {
if (!callback(arr, i, logger, &bp)) {
return UINT32_MAX;
}
}
return bp.bytes_pos;
}
bool bin_pack_obj_array_b(bin_pack_array_cb *callback, const void *arr, uint32_t arr_size, const Logger *logger, uint8_t *buf, uint32_t buf_size)
{
Bin_Pack bp;
bin_pack_init(&bp, buf, buf_size);
if (arr == nullptr) {
assert(arr_size == 0);
}
for (uint32_t i = 0; i < arr_size; ++i) {
if (!callback(arr, i, logger, &bp)) {
return false;
}
}
return true;
}
bool bin_pack_obj_array(Bin_Pack *bp, bin_pack_array_cb *callback, const void *arr, uint32_t arr_size, const Logger *logger)
{
if (arr == nullptr) {
assert(arr_size == 0);
return bin_pack_array(bp, 0);
}
if (!bin_pack_array(bp, arr_size)) {
return false;
}
for (uint32_t i = 0; i < arr_size; ++i) {
if (!callback(arr, i, logger, bp)) {
return false;
}
}
return true;
}
bool bin_pack_array(Bin_Pack *bp, uint32_t size)
{
return cmp_write_array(&bp->ctx, size);
}
bool bin_pack_bool(Bin_Pack *bp, bool val)
{
return cmp_write_bool(&bp->ctx, val);
}
bool bin_pack_u08(Bin_Pack *bp, uint8_t val)
{
return cmp_write_uinteger(&bp->ctx, val);
}
bool bin_pack_u16(Bin_Pack *bp, uint16_t val)
{
return cmp_write_uinteger(&bp->ctx, val);
}
bool bin_pack_u32(Bin_Pack *bp, uint32_t val)
{
return cmp_write_uinteger(&bp->ctx, val);
}
bool bin_pack_u64(Bin_Pack *bp, uint64_t val)
{
return cmp_write_uinteger(&bp->ctx, val);
}
bool bin_pack_bin(Bin_Pack *bp, const uint8_t *data, uint32_t length)
{
return cmp_write_bin(&bp->ctx, data, length);
}
bool bin_pack_nil(Bin_Pack *bp)
{
return cmp_write_nil(&bp->ctx);
}
bool bin_pack_bin_marker(Bin_Pack *bp, uint32_t size)
{
return cmp_write_bin_marker(&bp->ctx, size);
}
bool bin_pack_u08_b(Bin_Pack *bp, uint8_t val)
{
return bp->ctx.write(&bp->ctx, &val, 1) == 1;
}
bool bin_pack_u16_b(Bin_Pack *bp, uint16_t val)
{
return bin_pack_u08_b(bp, (val >> 8) & 0xff)
&& bin_pack_u08_b(bp, val & 0xff);
}
bool bin_pack_u32_b(Bin_Pack *bp, uint32_t val)
{
return bin_pack_u16_b(bp, (val >> 16) & 0xffff)
&& bin_pack_u16_b(bp, val & 0xffff);
}
bool bin_pack_u64_b(Bin_Pack *bp, uint64_t val)
{
return bin_pack_u32_b(bp, (val >> 32) & 0xffffffff)
&& bin_pack_u32_b(bp, val & 0xffffffff);
}
bool bin_pack_bin_b(Bin_Pack *bp, const uint8_t *data, uint32_t length)
{
return bp->ctx.write(&bp->ctx, data, length) == length;
}