Squashed 'external/toxcore/c-toxcore/' changes from c9cdae001..9ed2fa80d

9ed2fa80d fix(toxav): remove extra copy of video frame on encode
de30cf3ad docs: Add new file kinds, that should be useful to all clients.
d5b5e879d fix(DHT): Correct node skipping logic timed out nodes.
30e71fe97 refactor: Generate event dispatch functions and add tox_events_dispatch.
8fdbb0b50 style: Format parameter lists in event handlers.
d00dee12b refactor: Add warning logs when losing chat invites.
b144e8db1 feat: Add a way to look up a file number by ID.
849281ea0 feat: Add a way to fetch groups by chat ID.
a2c177396 refactor: Harden event system and improve type safety.
8f5caa656 refactor: Add MessagePack string support to bin_pack.
34e8d5ad5 chore: Add GitHub CodeQL workflow and local Docker runner.
f7b068010 refactor: Add nullability annotations to event headers.
788abe651 refactor(toxav): Use system allocator for mutexes.
2e4b423eb refactor: Use specific typedefs for public API arrays.
2baf34775 docs(toxav): update idle iteration interval see 679444751876fa3882a717772918ebdc8f083354
2f87ac67b feat: Add Event Loop abstraction (Ev).
f8dfc38d8 test: Fix data race in ToxScenario virtual_clock.
38313921e test(TCP): Add regression test for TCP priority queue integrity.
f94a50d9a refactor(toxav): Replace mutable_mutex with dynamically allocated mutex.
ad054511e refactor: Internalize DHT structs and add debug helpers.
8b467cc96 fix: Prevent potential integer overflow in group chat handshake.
4962bdbb8 test: Improve TCP simulation and add tests
5f0227093 refactor: Allow nullable data in group chat handlers.
e97b18ea9 chore: Improve Windows Docker support.
b14943bbd refactor: Move Logger out of Messenger into Tox.
dd3136250 cleanup: Apply nullability qualifiers to C++ codebase.
1849f70fc refactor: Extract low-level networking code to net and os_network.
8fec75421 refactor: Delete tox_random, align on rng and os_random.
a03ae8051 refactor: Delete tox_memory, align on mem and os_memory.
4c88fed2c refactor: Use `std::` prefixes more consistently in C++ code.
72452f2ae test: Add some more tests for onion and shared key cache.
d5a51b09a cleanup: Use tox_attributes.h in tox_private.h and install it.
b6f5b9fc5 test: Add some benchmarks for various high level things.
8a8d02785 test(support): Introduce threaded Tox runner and simulation barrier
d68d1d095 perf(toxav): optimize audio and video intermediate buffers by keeping them around
REVERT: c9cdae001 fix(toxav): remove extra copy of video frame on encode

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 9ed2fa80d582c714d6bdde6a7648220a92cddff8

toxcore/onion.h

@@ -9,15 +9,23 @@
 #ifndef C_TOXCORE_TOXCORE_ONION_H
 #define C_TOXCORE_TOXCORE_ONION_H
 
+#include <stdint.h>
+
 #include "DHT.h"
 #include "attributes.h"
 #include "crypto_core.h"
 #include "logger.h"
 #include "mem.h"
 #include "mono_time.h"
+#include "net.h"
 #include "network.h"
+#include "rng.h"
 #include "shared_key_cache.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 typedef int onion_recv_1_cb(void *_Nullable object, const IP_Port *_Nonnull dest, const uint8_t *_Nonnull data, uint16_t length);
 
 typedef struct Onion {
@@ -143,4 +151,9 @@ void set_callback_handle_recv_1(Onion *_Nonnull onion, onion_recv_1_cb *_Nullabl
 Onion *_Nullable new_onion(const Logger *_Nonnull log, const Memory *_Nonnull mem, const Mono_Time *_Nonnull mono_time, const Random *_Nonnull rng, DHT *_Nonnull dht, Networking_Core *_Nonnull net);
 
 void kill_onion(Onion *_Nullable onion);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* C_TOXCORE_TOXCORE_ONION_H */