tomato-testing/toxcore/group_onion_announce.c
Green Sky b2ae9530a4 Squashed 'external/toxcore/c-toxcore/' changes from e29e185c03..f1df709b87
f1df709b87 feat: add ngc events
1b6c907235 refactor: Make event dispatch ordered by receive time.
b7f9367f6f test: Upgrade cppcheck, fix some warnings.
766e62bc89 chore: Use `pkg_search_module` directly in cmake.
00ff078f91 cleanup: Use target_link_libraries directly in cmake.
c58928cc89 chore: Add `IMPORTED_TARGET` to pkg-config packages.
895a6af122 cleanup: Remove NaCl support.
41dfb1c1c0 fix: unpack enum function names in event impl generator
447666d1a1 chore: Disable targets for cross-compilation.
572924e924 chore: Build a docker image with coverage info in it.
415cb78f5e cleanup: Some portability/warning fixes for Windows builds.
425216d9ec fix: Correct a use-after-free and fix some memory leaks.
4b1cfa3e08 refactor: Change all enum-like `#define` sequences into enums.
d3c2704fa9 chore: Fix make_single_file to support core-only.
0ce46b644e refactor: Change the `TCP_PACKET_*` defines into an enum.
22cd38ad50 adopt event impl generation tool to #2392
f31ea1088a add the event impl generation tool
4e603bb613 refactor: Use `enum-from-int` rule from tokstyle.
19d8f180d6 chore: Update github actions `uses`.
6a895be0c7 test: Make esp32 build actually try to instantiate tox.
65d09c9bfb cleanup: Remove test net support.
REVERT: e29e185c03 feat: add ngc events

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: f1df709b8792da4c0e946d826b11df77d565064d
2023-12-27 12:37:22 +01:00

113 lines
4.2 KiB
C

/* SPDX-License-Identifier: GPL-3.0-or-later
* Copyright © 2016-2020 The TokTok team.
* Copyright © 2015 Tox project.
*/
#include "group_onion_announce.h"
#include <assert.h>
#include <string.h>
#include "ccompat.h"
static_assert(GCA_ANNOUNCE_MAX_SIZE <= ONION_MAX_EXTRA_DATA_SIZE,
"GC_Announce does not fit into the onion packet extra data");
static pack_extra_data_cb pack_group_announces;
non_null()
static int pack_group_announces(void *object, const Logger *logger, const Mono_Time *mono_time,
uint8_t num_nodes, uint8_t *plain, uint16_t plain_size,
uint8_t *response, uint16_t response_size, uint16_t offset)
{
GC_Announces_List *gc_announces_list = (GC_Announces_List *)object;
GC_Public_Announce public_announce;
if (gca_unpack_public_announce(logger, plain, plain_size,
&public_announce) == -1) {
LOGGER_WARNING(logger, "Failed to unpack public group announce");
return -1;
}
const GC_Peer_Announce *new_announce = gca_add_announce(mono_time, gc_announces_list, &public_announce);
if (new_announce == nullptr) {
LOGGER_ERROR(logger, "Failed to add group announce");
return -1;
}
GC_Announce gc_announces[GCA_MAX_SENT_ANNOUNCES];
const int num_ann = gca_get_announces(gc_announces_list,
gc_announces,
GCA_MAX_SENT_ANNOUNCES,
public_announce.chat_public_key,
new_announce->base_announce.peer_public_key);
if (num_ann < 0) {
LOGGER_ERROR(logger, "failed to get group announce");
return -1;
}
assert(num_ann <= UINT8_MAX);
size_t announces_length = 0;
if (gca_pack_announces_list(logger, response + offset, response_size - offset, gc_announces, (uint8_t)num_ann,
&announces_length) != num_ann) {
LOGGER_WARNING(logger, "Failed to pack group announces list");
return -1;
}
return announces_length;
}
void gca_onion_init(GC_Announces_List *group_announce, Onion_Announce *onion_a)
{
onion_announce_extra_data_callback(onion_a, GCA_MAX_SENT_ANNOUNCES * sizeof(GC_Announce), pack_group_announces,
group_announce);
}
int create_gca_announce_request(
const Random *rng, uint8_t *packet, uint16_t max_packet_length, const uint8_t *dest_client_id,
const uint8_t *public_key, const uint8_t *secret_key, const uint8_t *ping_id,
const uint8_t *client_id, const uint8_t *data_public_key, uint64_t sendback_data,
const uint8_t *gc_data, uint16_t gc_data_length)
{
if (max_packet_length < ONION_ANNOUNCE_REQUEST_MAX_SIZE || gc_data_length == 0) {
return -1;
}
uint8_t plain[ONION_PING_ID_SIZE + CRYPTO_PUBLIC_KEY_SIZE + CRYPTO_PUBLIC_KEY_SIZE +
ONION_ANNOUNCE_SENDBACK_DATA_LENGTH + GCA_ANNOUNCE_MAX_SIZE];
uint8_t *position_in_plain = plain;
const size_t encrypted_size = sizeof(plain) - GCA_ANNOUNCE_MAX_SIZE + gc_data_length;
memcpy(plain, ping_id, ONION_PING_ID_SIZE);
position_in_plain += ONION_PING_ID_SIZE;
memcpy(position_in_plain, client_id, CRYPTO_PUBLIC_KEY_SIZE);
position_in_plain += CRYPTO_PUBLIC_KEY_SIZE;
memcpy(position_in_plain, data_public_key, CRYPTO_PUBLIC_KEY_SIZE);
position_in_plain += CRYPTO_PUBLIC_KEY_SIZE;
memcpy(position_in_plain, &sendback_data, sizeof(sendback_data));
position_in_plain += sizeof(sendback_data);
memcpy(position_in_plain, gc_data, gc_data_length);
packet[0] = NET_PACKET_ANNOUNCE_REQUEST;
random_nonce(rng, packet + 1);
memcpy(packet + 1 + CRYPTO_NONCE_SIZE, public_key, CRYPTO_PUBLIC_KEY_SIZE);
const int len = encrypt_data(dest_client_id, secret_key, packet + 1, plain,
encrypted_size, packet + 1 + CRYPTO_NONCE_SIZE + CRYPTO_PUBLIC_KEY_SIZE);
const uint32_t full_length = (uint32_t)len + 1 + CRYPTO_NONCE_SIZE + CRYPTO_PUBLIC_KEY_SIZE;
if (full_length != ONION_ANNOUNCE_REQUEST_MIN_SIZE + gc_data_length) {
return -1;
}
return full_length;
}