client-sdk-cpp/src/e2ee.cpp at main · Sqhh99/client-sdk-cpp · GitHub

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* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an “AS IS” BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

#include "livekit/e2ee.h"

#include <stdexcept>

#include <utility>

#include "e2ee.pb.h"

#include "ffi.pb.h"

#include "ffi_client.h"

#include "livekit/ffi_handle.h"

namespace livekit {

namespace {

std::string bytesToString(const std::vector<std::uint8_t> &v) {

return std::string(reinterpret_cast<const char *>(v.data()), v.size());

}

std::vector<std::uint8_t> stringToBytes(const std::string &s) {

return std::vector<std::uint8_t>(s.begin(), s.end());

}

} // namespace

// ============================================================================

// KeyProvider

// ============================================================================

E2EEManager::KeyProvider::KeyProvider(std::uint64_t room_handle,

KeyProviderOptions options)

: room_handle_(room_handle), options_(std::move(options)) {}

const KeyProviderOptions &E2EEManager::KeyProvider::options() const {

return options_;

}

void E2EEManager::KeyProvider::setSharedKey(

const std::vector<std::uint8_t> &key, int key_index) {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

req.mutable_e2ee()->mutable_set_shared_key()->set_key_index(key_index);

req.mutable_e2ee()->mutable_set_shared_key()->set_shared_key(

bytesToString(key));

FfiClient::instance().sendRequest(req);

}

std::vector<std::uint8_t>

E2EEManager::KeyProvider::exportSharedKey(int key_index) const {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

req.mutable_e2ee()->mutable_get_shared_key()->set_key_index(key_index);

auto resp = FfiClient::instance().sendRequest(req);

return stringToBytes(resp.e2ee().get_shared_key().key());

}

std::vector<std::uint8_t>

E2EEManager::KeyProvider::ratchetSharedKey(int key_index) {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

req.mutable_e2ee()->mutable_ratchet_shared_key()->set_key_index(key_index);

auto resp = FfiClient::instance().sendRequest(req);

return stringToBytes(resp.e2ee().ratchet_shared_key().new_key());

}

void E2EEManager::KeyProvider::setKey(const std::string &participant_identity,

const std::vector<std::uint8_t> &key,

int key_index) {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

req.mutable_e2ee()->mutable_set_key()->set_participant_identity(

participant_identity);

req.mutable_e2ee()->mutable_set_key()->set_key_index(key_index);

req.mutable_e2ee()->mutable_set_key()->set_key(bytesToString(key));

FfiClient::instance().sendRequest(req);

}

std::vector<std::uint8_t>

E2EEManager::KeyProvider::exportKey(const std::string &participant_identity,

int key_index) const {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

req.mutable_e2ee()->mutable_get_key()->set_participant_identity(

participant_identity);

req.mutable_e2ee()->mutable_get_key()->set_key_index(key_index);

auto resp = FfiClient::instance().sendRequest(req);

return stringToBytes(resp.e2ee().get_key().key());

}

std::vector<std::uint8_t>

E2EEManager::KeyProvider::ratchetKey(const std::string &participant_identity,

int key_index) {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

req.mutable_e2ee()->mutable_ratchet_key()->set_participant_identity(

participant_identity);

req.mutable_e2ee()->mutable_ratchet_key()->set_key_index(key_index);

auto resp = FfiClient::instance().sendRequest(req);

return stringToBytes(resp.e2ee().ratchet_key().new_key());

}

// ============================================================================

// FrameCryptor

// ============================================================================

E2EEManager::FrameCryptor::FrameCryptor(std::uint64_t room_handle,

std::string participant_identity,

int key_index, bool enabled)

: room_handle_(room_handle), enabled_(enabled),

participant_identity_(std::move(participant_identity)),

key_index_(key_index) {}

const std::string &E2EEManager::FrameCryptor::participantIdentity() const {

return participant_identity_;

}

int E2EEManager::FrameCryptor::keyIndex() const { return key_index_; }

bool E2EEManager::FrameCryptor::enabled() const { return enabled_; }

void E2EEManager::FrameCryptor::setEnabled(bool enabled) {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

req.mutable_e2ee()->mutable_cryptor_set_enabled()->set_participant_identity(

participant_identity_);

req.mutable_e2ee()->mutable_cryptor_set_enabled()->set_enabled(enabled);

FfiClient::instance().sendRequest(req);

}

void E2EEManager::FrameCryptor::setKeyIndex(int key_index) {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

req.mutable_e2ee()->mutable_cryptor_set_key_index()->set_participant_identity(

participant_identity_);

req.mutable_e2ee()->mutable_cryptor_set_key_index()->set_key_index(key_index);

FfiClient::instance().sendRequest(req);

}

// ============================================================================

// E2EEManager

// ============================================================================

E2EEManager::E2EEManager(std::uint64_t room_handle, const E2EEOptions &options)

: room_handle_(room_handle),

enabled_(true), // or false, depending on your desired default behavior

options_(options),

key_provider_(room_handle, options.key_provider_options) {}

bool E2EEManager::enabled() const { return enabled_; }

void E2EEManager::setEnabled(bool enabled) {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

req.mutable_e2ee()->mutable_manager_set_enabled()->set_enabled(enabled);

FfiClient::instance().sendRequest(req);

}

E2EEManager::KeyProvider *E2EEManager::keyProvider() { return &key_provider_; }

const E2EEManager::KeyProvider *E2EEManager::keyProvider() const {

return &key_provider_;

}

std::vector<E2EEManager::FrameCryptor> E2EEManager::frameCryptors() const {

proto::FfiRequest req;

req.mutable_e2ee()->set_room_handle(room_handle_);

auto resp = FfiClient::instance().sendRequest(req);

std::vector<E2EEManager::FrameCryptor> out;

const auto &list = resp.e2ee().manager_get_frame_cryptors().frame_cryptors();

out.reserve(static_cast<std::size_t>(list.size()));

for (const auto &fc : list) {

out.emplace_back(room_handle_, fc.participant_identity(), fc.key_index(),

fc.enabled());

}

return out;

}

} // namespace livekit

client-sdk-cpp/src/e2ee.cpp at main · Sqhh99/client-sdk-cpp · GitHub

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