Teaspeak-Server/server/src/client/SpeakingClient.cpp

#include <memory>

#include <misc/endianness.h>
#include <log/LogUtils.h>
#include <ThreadPool/Timer.h>
#include <regex>
#include <src/build.h>
#include <Properties.h>
#include "src/channel/ClientChannelView.h"
#include "SpeakingClient.h"
#include "src/InstanceHandler.h"
#include "StringVariable.h"
#include "src/music/MusicBotManager.h"
#include "misc/timer.h"

using namespace std::chrono;
using namespace ts;
using namespace ts::server;
using namespace ts::protocol;

//#define PKT_LOG_VOICE
//#define PKT_LOG_WHISPER

bool SpeakingClient::shouldReceiveVoice(const std::shared_ptr<ConnectedClient> &sender) {
    //if(this->properties()[property::CLIENT_AWAY].as<bool>()) return false;
    if(!this->properties()[property::CLIENT_OUTPUT_HARDWARE].as<bool>()) return false;
    if(this->properties()[property::CLIENT_OUTPUT_MUTED].as<bool>()) return false;

    {
        shared_lock client_lock(this->channel_lock);
        for(const auto& entry : this->mutedClients)
            if(entry.lock() == sender)
                return false;
    }
    return true;
}

bool SpeakingClient::shouldReceiveVoiceWhisper(const std::shared_ptr<ConnectedClient> &sender) {
    if(!this->shouldReceiveVoice(sender))
        return false;

    auto required_permission = this->cached_permission_value(permission::i_client_needed_whisper_power);
    if(required_permission == permNotGranted)
        return true;

    auto granted_permission = sender->cached_permission_value(permission::i_client_whisper_power);
    return granted_permission >= required_permission;
}

void SpeakingClient::handlePacketVoice(const pipes::buffer_view& data, bool head, bool fragmented) {
    auto server = this->getServer();
    auto self = _this.lock();
    if(!self || !server) return;

    if(data.length() < 3) {
        this->disconnect("invalid packet (Voice; Length: " + to_string(data.length()) + ")");
        return;
    }

    auto current_channel = this->currentChannel;
    if(!current_channel) { return; }
    if(!this->allowedToTalk) { return; }
    this->updateSpeak(false, system_clock::now());
    this->resetIdleTime();

    auto target_clients = this->server->getClientsByChannel(current_channel);
    target_clients.erase(std::remove_if(target_clients.begin(), target_clients.end(), [&](const shared_ptr<ConnectedClient>& client) {
        if(client == this) return true;
        auto speaking_client = dynamic_pointer_cast<SpeakingClient>(client);
        if(!speaking_client) return true;

        return !speaking_client->shouldReceiveVoice(self);

    }), target_clients.end());
    if(target_clients.empty()) {
        return;
    }

    VoicePacketFlags flags{};
    flags.head = head;
    flags.fragmented = fragmented;
    flags.new_protocol = false;
    {
        //crypt_mode = 1 | disabled
        //crypt_mode = 2 | enabled
        auto crypt_mode = this->server->voice_encryption_mode();
        if(crypt_mode == 0)
            flags.encrypted = !current_channel->properties()[property::CHANNEL_CODEC_IS_UNENCRYPTED].as<bool>();
        else
            flags.encrypted = crypt_mode == 2;
    }
    uint16_t vpacketId = be2le16((char*) data.data_ptr());
    auto codec = (uint8_t) data[2];
#ifdef PKT_LOG_VOICE
    logTrace(lstream << CLIENT_LOG_PREFIX << "Voice length: " << data.length() << " -> id: " << vpacketId << " codec: " << (int) codec << " head: " << head << " fragmented: " << fragmented);
#endif

    char buffer[data.length() + 2];

    le2be16(vpacketId, &buffer[0]);
    le2be16(getClientId(), &buffer[2]);
    buffer[4] = codec;

    if(data.length() - 3 > 0) {
        memcpy(&buffer[5], &data[3], data.length() - 3);
    }

    for (const auto& client : target_clients) {
        auto speaking_client = static_pointer_cast<SpeakingClient>(client);
        speaking_client->send_voice_packet(pipes::buffer_view{buffer, data.length() + 2}, flags);
    }
}

//2 + 2 + 8
#define OUT_WHISPER_PKT_OFFSET 5
//#define PKT_LOG_WHISPER

enum WhisperType {
    SERVER_GROUP = 0,
    CHANNEL_GROUP = 1,
    CHANNEL_COMMANDER = 2,
    ALL = 3
};

enum WhisperTarget {
    CHANNEL_ALL = 0,
    CHANNEL_CURRENT = 1,
    CHANNEL_PARENT = 2,
    CHANNEL_ALL_PARENT = 3,
    CHANNEL_FAMILY = 4,
    CHANNEL_COMPLETE_FAMILY = 5,
    CHANNEL_SUBCHANNELS = 6
};

//All clients => type := SERVER_GROUP and target_id := 0
//Server group => type := SERVER_GROUP and target_id := <server group id>
//Channel group => type := CHANNEL_GROUP and target_id := <channel group id>
//Channel commander => type := CHANNEL_COMMANDER and target_id := 0
void SpeakingClient::handlePacketVoiceWhisper(const pipes::buffer_view& data, bool new_packet) {
    if(data.length() < 5) {
        this->disconnect("Invalid packet (Voice whisper)");
        logMessage(this->getServerId(), "{} Tried to send a too short whisper packet. Length: {}", CLIENT_STR_LOG_PREFIX, data.length());
        return;
    }

    uint16_t offset = 0;
    auto vpacketId = be2le16((char*) data.data_ptr(), offset, &offset);
    auto codec = (uint8_t) data[offset++];

    VoicePacketFlags flags{};
    flags.head = false;
    flags.fragmented = false;
    flags.new_protocol = new_packet;

    if(new_packet) {
        if(data.length() < 7) {
            this->disconnect("Invalid packet (Voice whisper | New)");
            logMessage(this->getServerId(), "{} Tried to send a too short whisper packet. Length: {}", CLIENT_STR_LOG_PREFIX, data.length());
            return;
        }

        auto type = (WhisperType) data[offset++];
        auto target = (WhisperTarget) data[offset++];
        auto type_id = be2le64((char*) data.data_ptr(), offset, &offset);
        this->resetIdleTime();

        size_t data_length = data.length() - offset;
#ifdef PKT_LOG_WHISPER
        logTrace(this->getServerId(), "{} Whisper data length: {}. Type: {}. Target: {}. Target ID: {}.", CLIENT_STR_LOG_PREFIX, data_length, type, target, type_id);
#endif

        deque<shared_ptr<SpeakingClient>> available_clients;
        for(const auto& client : this->server->getClients()) {
            auto speakingClient = dynamic_pointer_cast<SpeakingClient>(client);
            if(!speakingClient || client == this) continue;
            if(!speakingClient->currentChannel) continue;

            if(type == WhisperType::ALL) {
                available_clients.push_back(speakingClient);
            } else if(type == WhisperType::SERVER_GROUP) {
                if(type_id == 0)
                    available_clients.push_back(speakingClient);
                else {
                    shared_lock client_lock(this->channel_lock);
                    for(const auto& id : client->cached_server_groups) {
                        if(id == type_id) {
                            available_clients.push_back(speakingClient);
                            break;
                        }
                    }
                }
            } else if(type == WhisperType::CHANNEL_GROUP) {
                if(client->cached_channel_group == type_id)
                    available_clients.push_back(speakingClient);
            } else if(type == WhisperType::CHANNEL_COMMANDER) {
                if(client->properties()[property::CLIENT_IS_CHANNEL_COMMANDER].as<bool>())
                    available_clients.push_back(speakingClient);
            }
        }

        if(target == WhisperTarget::CHANNEL_CURRENT) {
            available_clients.erase(std::remove_if(available_clients.begin(), available_clients.end(), [&](const shared_ptr<SpeakingClient>& target) {
                return target->currentChannel != this->currentChannel;
            }), available_clients.end());
        } else if(target == WhisperTarget::CHANNEL_PARENT) {
            auto current_parent = this->currentChannel->parent();
            if(!current_parent) return;

            available_clients.erase(std::remove_if(available_clients.begin(), available_clients.end(), [&](const shared_ptr<SpeakingClient>& target) {
                return target->currentChannel != current_parent;
            }), available_clients.end());
        } else if(target == WhisperTarget::CHANNEL_ALL_PARENT) {
            shared_ptr<BasicChannel> current_parent;
            {
                current_parent = this->currentChannel->parent();
                if(!current_parent) return;
            }
            available_clients.erase(std::remove_if(available_clients.begin(), available_clients.end(), [&](const shared_ptr<SpeakingClient>& target) {
                auto tmp_parent = current_parent;
                while(tmp_parent && tmp_parent != target->currentChannel)
                    tmp_parent = tmp_parent->parent();
                return target->currentChannel != tmp_parent;
            }), available_clients.end());
        } else if(target == WhisperTarget::CHANNEL_FAMILY) {
            shared_ptr<BasicChannel> current = this->currentChannel;
            available_clients.erase(std::remove_if(available_clients.begin(), available_clients.end(), [&](const shared_ptr<SpeakingClient>& target) {
                auto tmp_current = target->currentChannel;
                while(tmp_current && tmp_current != current)
                    tmp_current = tmp_current->parent();
                return current != tmp_current;
            }), available_clients.end());
        } else if(target == WhisperTarget::CHANNEL_COMPLETE_FAMILY) {
            shared_ptr<BasicChannel> current = this->currentChannel;
            while(current && current->parent()) current = current->parent();
            available_clients.erase(std::remove_if(available_clients.begin(), available_clients.end(), [&](const shared_ptr<SpeakingClient>& target) {
                auto tmp_current = target->currentChannel;
                while(tmp_current && tmp_current != current)
                    tmp_current = tmp_current->parent();
                return current != tmp_current;
            }), available_clients.end());
        } else if(target == WhisperTarget::CHANNEL_SUBCHANNELS) {
            shared_ptr<BasicChannel> current = this->currentChannel;
            available_clients.erase(std::remove_if(available_clients.begin(), available_clients.end(), [&](const shared_ptr<SpeakingClient>& target) {
                return target->currentChannel->parent() != current;
            }), available_clients.end());
        }
        if(available_clients.empty()) return;

        //Create the packet data
        char packet_buffer[OUT_WHISPER_PKT_OFFSET + data_length];
        if(offset < data.length())
            memcpy(&packet_buffer[OUT_WHISPER_PKT_OFFSET], &data[offset], data_length);

        le2be16(vpacketId, packet_buffer, 0);
        le2be16(this->getClientId(), packet_buffer, 2);
        packet_buffer[4] = codec;

        VoicePacketFlags flags{};
        auto data = pipes::buffer_view(packet_buffer, OUT_WHISPER_PKT_OFFSET + data_length);
        for(const auto& cl : available_clients){
            if(cl->shouldReceiveVoiceWhisper(_this.lock()))
                cl->send_voice_whisper_packet(data, flags);
        }

        this->updateSpeak(false, system_clock::now());
    } else {
        auto clientCount = (uint8_t) data[offset++];
        auto channelCount = (uint8_t) data[offset++];
        if(data.length() < 5 + channelCount * 2 + clientCount * 8) {
            logMessage(this->getServerId(), "{} Tried to send a too short whisper packet. Length: {} Required: {}", CLIENT_STR_LOG_PREFIX, data.length(), to_string(5 + channelCount * 2 + clientCount * 8));
            return;
        }

        this->resetIdleTime();
        ChannelId channelIds[clientCount];
        ClientId clientIds[channelCount];

        for(uint8_t index = 0; index < clientCount; index++)
            channelIds[index] = be2le64((char*) data.data_ptr(), offset, &offset);
        for(uint8_t index = 0; index < channelCount; index++)
            clientIds[index] = be2le16((char*) data.data_ptr(), offset, &offset);

        size_t dataLength = data.length() - offset;
#ifdef PKT_LOG_WHISPER
        logTrace(this->getServerId(), "{} Whisper data length: {}. Client count: {}. Channel count: {}.", CLIENT_STR_LOG_PREFIX, dataLength, clientCount, channelCount);
#endif
        //Create the packet data
        char packetBuffer[OUT_WHISPER_PKT_OFFSET + dataLength];
        if(offset < data.length())
            memcpy(&packetBuffer[OUT_WHISPER_PKT_OFFSET], &data[offset], dataLength);

        le2be16(vpacketId, packetBuffer, 0);
        le2be16(this->getClientId(), packetBuffer, 2);
        packetBuffer[4] = codec;

        VoicePacketFlags flags{};
        auto data = pipes::buffer_view(packetBuffer, OUT_WHISPER_PKT_OFFSET + dataLength);

        for(const auto& cl : this->server->getClients()){ //Faster?
            auto speakingClient = dynamic_pointer_cast<SpeakingClient>(cl);
            if(!speakingClient || cl == this) continue;
            if(!cl->currentChannel) continue;

            auto clientChannelId = cl->currentChannel->channelId();
            auto clientId = cl->getClientId();

            for(uint8_t index = 0; index < clientCount; index++)
                if(channelIds[index] == clientChannelId) goto handleSend;
            for(uint8_t index = 0; index < channelCount; index++)
                if(clientIds[index] == clientId) goto handleSend;
            continue;

            handleSend:
            if(speakingClient->shouldReceiveVoiceWhisper(_this.lock()))
                speakingClient->send_voice_whisper_packet(data, flags);
        }

        this->updateSpeak(false, system_clock::now());
    }
}

#define TEST_PARM(type) \
do {\
    if(!cmd[0][key].castable<type>())\
        return {findError("parameter_invalid"), "Invalid type for " + key};\
} while(false)

auto regex_wildcard = std::regex(".*");

#define S(x) #x
#define HWID_REGEX(name, pattern)                           \
auto regex_hwid_ ##name = [](){                             \
    try {                                                   \
        return std::regex(pattern);                         \
    } catch (std::exception& ex) {                          \
        logError(0, "Failed to parse regex for " S(name));  \
    }                                                       \
    return regex_wildcard;                                  \
}();

HWID_REGEX(windows, "^[a-z0-9]{32},[a-z0-9]{32}$");
HWID_REGEX(unix, "^[a-z0-9]{32}$");
HWID_REGEX(android, "^[a-z0-9]{16}$");
HWID_REGEX(ios, "^[A-Z0-9]{8}-[A-Z0-9]{4}-[A-Z0-9]{4}-[A-Z0-9]{4}-[A-Z0-9]{12}$");

command_result SpeakingClient::handleCommandClientInit(Command& cmd) {
    TIMING_START(timings);

    {
        lock_guard<threads::Mutex> lock(this->server->join_attempts_lock);
        auto inetAddr = this->getPeerIp();
        if(config::voice::clientConnectLimit > 0 && this->server->join_attempts[inetAddr] + 1 > config::voice::clientConnectLimit)
            return command_result{error::client_join_rate_limit_reached};
        if(config::voice::connectLimit > 0 && this->server->join_attempts["_"] + 1 > config::voice::connectLimit)
            return command_result{error::server_join_rate_limit_reached};
        this->server->join_attempts[inetAddr]++;
        this->server->join_attempts["_"]++;
    }
    TIMING_STEP(timings, "join atmp c");

    if(!DatabaseHelper::assignDatabaseId(this->server->getSql(), this->server->getServerId(), _this.lock()))
        return command_result{error::vs_critical, "Could not assign database id!"};

    TIMING_STEP(timings, "db assign  ");
    this->server->getGroupManager()->enableCache(this->getClientDatabaseId());
    TIMING_STEP(timings, "gr cache   ");

    const static vector<string> available_parameters = {
            "client_nickname",
            "client_version",
            "client_platform",
            "client_input_muted",
            "client_input_hardware",
            "client_output_hardware",
            "client_output_muted",
            "client_default_channel",
            "client_default_channel_password",
            "client_server_password",
            "client_meta_data",
            "client_version_sign",
            "client_key_offset",
            "client_nickname_phonetic",
            "client_default_token",
            "client_badges=badges",
            "client_badges",
            "client_myteamspeak_id",
            "client_integrations",
            "client_active_integrations_info",
            "client_browser_engine",

            "client_away",
            "client_away_message",

            "hwid",
            "myTeamspeakId",
            "acTime",
            "userPubKey",
            "authSign",
            "pubSign",
            "pubSignCert"
    };

    for(const auto& key : cmd[0].keys()) {
        if(key == "return_code") continue;
        bool parm_allowed = false;
        for(const auto& _allowed_key : available_parameters) {
            if(_allowed_key == key) {
                parm_allowed = true;
                break;
            }
        }
        if(!parm_allowed) {
            debugMessage(this->getServerId(), "{} Tried to insert a not allowed parameter within clientinit (Key: {}, Value: {})", CLIENT_STR_LOG_PREFIX, key,cmd[key].string());
            continue;
        }


        if(key == "myTeamspeakId") {
            this->properties()[property::CLIENT_MYTEAMSPEAK_ID] = cmd[key].string();
            continue;
        } else if(key == "acTime") continue;
        else if(key == "userPubKey") continue;
        else if(key == "authSign") continue;
        else if(key == "pubSign") continue;
        else if(key == "pubSignCert") continue;
        else if(key == "client_version" || key == "client_platform") {
            for(auto& character : cmd[key].string())
                if(!isascii(character)) {
                    logWarning(this->getServerId(), "{} Tried to join within an invalid supplied '{}' ({})", CLIENT_STR_LOG_PREFIX, key,cmd[key].string());
                    return command_result{error::client_hacked};
                }
        }

        const auto &info = property::info<property::ClientProperties>(key);
        if(*info == property::CLIENT_UNDEFINED) {
            logError(this->getServerId(), "{} Tried to pass a unknown value {}. Please report this, if you're sure that this key should be known!", CLIENT_STR_LOG_PREFIX, key);
            continue;
            //return {findError("parameter_invalid"), "Unknown property " + key};
        }
        if(!info->validate_input(cmd[key].as<string>()))
            return command_result{error::parameter_invalid};

        this->properties()[info] = cmd[key].as<std::string>();
    }
    debugMessage(this->getServerId(), "{} Got client init. (HWID: {})", CLIENT_STR_LOG_PREFIX, this->getHardwareId());
    TIMING_STEP(timings, "props apply");

    auto permissions_list = this->permissionValues(permission::PERMTEST_ORDERED, {
            permission::b_virtualserver_join_ignore_password,
            permission::b_client_ignore_bans,
            permission::b_client_ignore_vpn,

            permission::i_client_max_clones_uid,
            permission::i_client_max_clones_ip,
            permission::i_client_max_clones_hwid,

            permission::b_client_enforce_valid_hwid,

            permission::b_client_use_reserved_slot
    }, nullptr);
    auto permissions = map<permission::PermissionType, permission::PermissionValue>(permissions_list.begin(), permissions_list.end());
    TIMING_STEP(timings, "perm calc 1");

    if(geoloc::provider_vpn && permissions[permission::b_client_ignore_vpn] == permNotGranted) {
        auto provider = this->isAddressV4() ? geoloc::provider_vpn->resolveInfoV4(this->getPeerIp(), true) : geoloc::provider_vpn->resolveInfoV6(this->getPeerIp(), true);
        if(provider)
            return command_result{error::server_connect_banned, strvar::transform(ts::config::messages::kick_vpn, strvar::StringValue{"provider.name", provider->name}, strvar::StringValue{"provider.website", provider->side})};
    }

    if(this->getType() == ClientType::CLIENT_TEAMSPEAK && (permissions[permission::b_client_enforce_valid_hwid] == permNotGranted && permissions[permission::b_client_enforce_valid_hwid] == 0)) {
        auto hwid = this->properties()[property::CLIENT_HARDWARE_ID].as<string>();
        if(
                !std::regex_match(hwid, regex_hwid_windows) &&
                !std::regex_match(hwid, regex_hwid_unix) &&
                !std::regex_match(hwid, regex_hwid_android) &&
                !std::regex_match(hwid, regex_hwid_ios)
        ) {
            return command_result{error::parameter_invalid, config::messages::kick_invalid_hardware_id};
        }
    }
    TIMING_STEP(timings, "valid hw ip");

    auto ignorePassword = permissions[permission::b_virtualserver_join_ignore_password] > 0 && permissions[permission::b_virtualserver_join_ignore_password] != permNotGranted;
    if(!ignorePassword)
        if(!this->server->verifyServerPassword(cmd["client_server_password"].string(), true))
            return command_result{error::server_invalid_password};

    size_t clones_uid = 0;
    size_t clones_ip = 0;
    size_t clones_hwid = 0;

    auto _own_hwid = this->getHardwareId();
    this->server->forEachClient([&](const shared_ptr<ConnectedClient>& client) {
        if(client->getExternalType() != CLIENT_TEAMSPEAK) return;
        if(client->getUid() == this->getUid())
            clones_uid++;
        if(client->getPeerIp() == this->getPeerIp())
            clones_ip++;
        if(client->getHardwareId() == _own_hwid)
            clones_hwid++;
    });

    if(permissions[permission::i_client_max_clones_uid] > 0 && clones_uid >= permissions[permission::i_client_max_clones_uid]) {
        logMessage(this->getServerId(), "{} Disconnecting because there are already {} uid clones connected. (Allowed: {})", CLIENT_STR_LOG_PREFIX, clones_uid, permissions[permission::i_client_max_clones_uid]);
        return command_result{error:: client_too_many_clones_connected, "too many clones connected (uid)"};
    }

    if(permissions[permission::i_client_max_clones_ip] > 0 && clones_ip >= permissions[permission::i_client_max_clones_ip]) {
        logMessage(this->getServerId(), "{} Disconnecting because there are already {} ip clones connected. (Allowed: {})", CLIENT_STR_LOG_PREFIX, clones_ip, permissions[permission::i_client_max_clones_ip]);
        return command_result{error:: client_too_many_clones_connected, "too many clones connected (ip)"};
    }

    if(permissions[permission::i_client_max_clones_hwid] > 0 && clones_hwid >= permissions[permission::i_client_max_clones_hwid] && !_own_hwid.empty()) {
        logMessage(this->getServerId(), "{} Disconnecting because there are already {} hwid clones connected. (Allowed: {})", CLIENT_STR_LOG_PREFIX, clones_hwid, permissions[permission::i_client_max_clones_hwid]);
        return command_result{error:: client_too_many_clones_connected, "too many clones connected (hwid)"};
    }
    TIMING_STEP(timings, "max clones ");

    auto banEntry = this->resolveActiveBan(this->getPeerIp());
    if(banEntry) {
        logMessage(this->getServerId(), "{} Disconnecting while init because of ban record. Record id {} at server {}",
                CLIENT_STR_LOG_PREFIX,
                banEntry->banId,
                banEntry->serverId);
        serverInstance->banManager()->trigger_ban(banEntry, this->getServerId(), this->getUid(), this->getHardwareId(), this->getDisplayName(), this->getPeerIp());

        string fullReason = string() + "You are banned " + (banEntry->serverId == 0 ? "globally" : "from this server") + ". Reason: \"" + banEntry->reason + "\". Ban expires ";

        string time;
        if(banEntry->until.time_since_epoch().count() != 0){
            time += "in ";
            auto seconds = chrono::ceil<chrono::seconds>(banEntry->until - chrono::system_clock::now()).count();
            tm p{};
            memset(&p, 0, sizeof(p));

            while(seconds >= 365 * 24 * 60 * 60){
                p.tm_year++;
                seconds -= 365 * 24 * 60 * 60;
            }
            while(seconds >= 24 * 60 * 60){
                p.tm_yday++;
                seconds -= 24 * 60 * 60;
            }
            while(seconds >= 60 * 60){
                p.tm_hour++;
                seconds -= 60 * 60;
            }
            while(seconds >= 60){
                p.tm_min++;
                seconds -= 60;
            }
            p.tm_sec = (int) seconds;

            if(p.tm_year > 0)
                time += to_string(p.tm_year) + " years, ";
            if(p.tm_yday > 0)
                time += to_string(p.tm_yday) + " days, ";
            if(p.tm_hour > 0)
                time += to_string(p.tm_hour) + " hours, ";
            if(p.tm_min > 0)
                time += to_string(p.tm_min) + " minutes, ";
            if(p.tm_sec > 0)
                time += to_string(p.tm_sec) + " seconds, ";
            if(time.empty()) time = "now, ";
            time = time.substr(0, time.length() - 2);
        } else time = "never";
        fullReason += time + "!";

        return command_result{error::server_connect_banned, fullReason};
    }
    TIMING_STEP(timings, "ban resolve");

    size_t count = 0;
    {
        for(const auto &cl : this->server->getClients())
            if((cl->getType() == CLIENT_TEAMSPEAK || cl->getType() == CLIENT_WEB || cl->getType() == CLIENT_TEASPEAK || cl->getType() == CLIENT_MUSIC))
                if(cl->connectionState() <= ConnectionState::CONNECTED && cl->connectionState() >= ConnectionState::INIT_HIGH)
                    count++;
    }

    auto maxClients = this->server->properties()[property::VIRTUALSERVER_MAXCLIENTS].as<size_t>();
    auto reserved = this->server->properties()[property::VIRTUALSERVER_RESERVED_SLOTS].as<size_t>();

    bool allowReserved = permissions[permission::b_client_use_reserved_slot] != permNotGranted && permissions[permission::b_client_use_reserved_slot] != 0;
    if(reserved > maxClients){
        if(!allowReserved)
            return command_result{error::server_maxclients_reached};
    } else if(maxClients - (allowReserved ? 0 : reserved) <= count)
        return command_result{error::server_maxclients_reached};
    TIMING_STEP(timings, "max clients");


    auto old_last_connected = this->properties()[property::CLIENT_LASTCONNECTED].as<int64_t>();
    this->properties()[property::CONNECTION_CLIENT_IP] = this->getLoggingPeerIp();
    this->properties()[property::CLIENT_LASTCONNECTED] = std::chrono::duration_cast<std::chrono::seconds>(std::chrono::system_clock::now().time_since_epoch()).count();
    this->properties()[property::CLIENT_TOTALCONNECTIONS]++;
    {
        auto time_point = system_clock::time_point() + seconds(old_last_connected);
        if(time_point < build::version()->timestamp) {
            logMessage(this->getServerId(), "{} Client may cached a old permission list (Server is newer than the client's last join)", CLIENT_STR_LOG_PREFIX);
            TIMING_STEP(timings, "pre dummy p");
            Command _dummy("dummy_permissionslist");
            this->handleCommandPermissionList(_dummy);
            TIMING_STEP(timings, "pst dummy p");
        }
    }

    this->postCommandHandler.emplace_back([&](){
        auto self = dynamic_pointer_cast<SpeakingClient>(_this.lock());
        std::thread([self](){
            threads::MutexLock l1(self->disconnectLock);
            if(self->state != ConnectionState::INIT_HIGH) return;
            try {
                self->processJoin();
            } catch (std::exception& ex) {
                logError(self->getServerId(), "Failed to proceed client join for {}. Got exception with message {}", CLIENT_STR_LOG_PREFIX_(self), ex.what());
                self->closeConnection();
            }
        }).detach();
    });

    debugMessage(this->getServerId(), "{} Client init timings: {}", CLIENT_STR_LOG_PREFIX, TIMING_FINISH(timings));
    return command_result{error::ok};
}

/* must be triggered while helding an execute lock */
//Note: Client permissions are may not really
void SpeakingClient::processJoin() {
    TIMING_START(timings);
    auto ref_server = this->server;

    this->resetIdleTime();
    threads::MutexLock lock(this->command_lock); //Don't process any commands!

    if(this->state != ConnectionState::INIT_HIGH) {
        logError(this->getServerId(), "{} Invalid processJoin() connection state!", CLIENT_STR_LOG_PREFIX);
        return;
    }

    TIMING_STEP(timings, "setup      ");
    ref_server->registerClient(_this.lock());
    TIMING_STEP(timings, "server reg ");
    ref_server->getGroupManager()->cleanupAssignments(this->getClientDatabaseId());
    TIMING_STEP(timings, "grp cleanup");
    ref_server->getGroupManager()->update_server_group_property(_this.lock(), true, nullptr);
    TIMING_STEP(timings, "grp apply  ");

    this->properties()[property::CLIENT_COUNTRY] = config::geo::countryFlag;
    if(geoloc::provider) {
        auto loc = this->isAddressV4() ? geoloc::provider->resolveInfoV4(this->getPeerIp(), false) : geoloc::provider->resolveInfoV6(this->getPeerIp(), false);
        if(loc) {
            debugMessage(this->getServerId(), "Client " + this->getDisplayName() + "|" + this->getLoggingPeerIp() + " comes from " + loc->name + "|" + loc->identifier);
            this->properties()[property::CLIENT_COUNTRY] = loc->identifier;
        } else {
            logError(ref_server ? ref_server->getServerId() : 0, "Could not resolve country for ip " + this->getLoggingPeerIp() + "|" + this->getDisplayName());
        }
    }
    //this->updateChannelClientProperties(false); /* will be already updated via assignChannel */
    if(ref_server->properties()[property::VIRTUALSERVER_HOSTMESSAGE_MODE].as<int>() == 3 && !ref_server->properties()[property::VIRTUALSERVER_HOSTMESSAGE].as<string>().empty()) {
        auto weak = this->_this;
        threads::Thread([weak](){
            threads::self::sleep_for(milliseconds(2000));
            auto client = weak.lock();
            if(!client || !client->server) return;

            client->disconnect(client->server->properties()[property::VIRTUALSERVER_HOSTMESSAGE].as<string>());
        }).detach();
    }

    TIMING_STEP(timings, "ip 2 loc as"); //IP to location assignment
    this->sendServerInit();
    debugMessage(this->getServerId(), "Client id: " + to_string(this->getClientId()));
    TIMING_STEP(timings, "notify sini");

    if(!ref_server->assignDefaultChannel(this->ref(), false)) {
        auto result = command_result{error::vs_critical, "Could not assign default channel!"};
        this->notifyError(result);
        result.release_details();
        this->closeConnection(system_clock::now() + seconds(1));
        return;
    }
    TIMING_STEP(timings, "assign chan");

    this->sendChannelList(true);
    this->state = ConnectionState::CONNECTED;
    TIMING_STEP(timings, "send chan t");

    /* trick the join method */
    auto channel = this->currentChannel;
    this->currentChannel = nullptr;
    {
        /* enforce an update of these properties */
        this->properties()[property::CLIENT_CHANNEL_GROUP_INHERITED_CHANNEL_ID] = "0";
        this->properties()[property::CLIENT_CHANNEL_GROUP_ID] = "0";
        this->properties()[property::CLIENT_TALK_POWER] = "0";

        unique_lock server_channel_lock(this->server->channel_tree_lock);
        this->server->client_move(this->ref(), channel, nullptr, "", ViewReasonId::VREASON_USER_ACTION, false, server_channel_lock);
        this->subscribeChannel({this->currentChannel}, false, true);
    }
    TIMING_STEP(timings, "join move  ");

    this->properties()->triggerAllModified();
    this->notifyServerGroupList();
    this->notifyChannelGroupList();
    TIMING_STEP(timings, "notify grou");
    logMessage(this->getServerId(), "Voice client {}/{} ({}) from {} joined.",
            this->getClientDatabaseId(),
            this->getUid(),
            this->getDisplayName(),
            this->getLoggingPeerIp() + ":" + to_string(this->getPeerPort())
    );

    this->connectTimestamp = chrono::system_clock::now();
    this->idleTimestamp = chrono::system_clock::now();

    debugMessage(this->getServerId(), "{} Client join timings: {}", CLIENT_STR_LOG_PREFIX, TIMING_FINISH(timings));
}

void SpeakingClient::processLeave() {
    auto ownLock = _this.lock();
    auto server = this->getServer();
    if(server){
        logMessage(this->getServerId(), "Voice client {}/{} ({}) from {} left.", this->getClientDatabaseId(), this->getUid(), this->getDisplayName(), this->getLoggingPeerIp() + ":" + to_string(this->getPeerPort()));
        {
            unique_lock server_channel_lock(this->server->channel_tree_lock);
            server->unregisterClient(ownLock, "disconnected", server_channel_lock); /* already moves client to void if needed */
        }
        server->groups->disableCache(ownLock->getClientDatabaseId());
        server->musicManager->cleanup_client_bots(this->getClientDatabaseId());
        //ref_server = nullptr; Removed caused nullptr exceptions
    }
    {   //Delete own viewing clients
        /*
         * No need, are only weak references!
        threads::MutexLock l(this->viewLock);
        this->visibleClients.clear();
        this->mutedClients.clear();
         */
    }
}

void SpeakingClient::triggerVoiceEnd() {
    this->properties()[property::CLIENT_FLAG_TALKING] = false;
}

void SpeakingClient::updateSpeak(bool onlyUpdate, const std::chrono::system_clock::time_point &now) {
    threads::MutexLock lock(this->speak_lock);
    if(this->speak_last_packet + this->speak_accuracy < now) {
        if(this->speak_last_packet > this->speak_begin) {
            if(!this->properties()[property::CLIENT_FLAG_TALKING].as<bool>())
                this->properties()[property::CLIENT_FLAG_TALKING] = true;
            this->speak_time += duration_cast<milliseconds>(this->speak_last_packet - this->speak_begin);
        } else {
            if(this->properties()[property::CLIENT_FLAG_TALKING].as<bool>())
                this->properties()[property::CLIENT_FLAG_TALKING] = false;
        }

        this->speak_begin = now;
        this->speak_last_packet = now;
    }
    if(!onlyUpdate)
        this->speak_last_packet = now;
}

void SpeakingClient::tick(const std::chrono::system_clock::time_point &time) {
    ConnectedClient::tick(time);
    ALARM_TIMER(A1, "SpeakingClient::tick", milliseconds(2));
    this->updateSpeak(true, time);

    if(this->state == ConnectionState::CONNECTED) {
        if(this->max_idle_time.has_value) {
            auto max_idle = this->max_idle_time.value;
            if(max_idle > 0 && this->idleTimestamp.time_since_epoch().count() > 0 && duration_cast<seconds>(time - this->idleTimestamp).count() > max_idle) {
                this->server->notify_client_kick(this->ref(), this->server->getServerRoot(), ts::config::messages::idle_time_exceeded, nullptr);
                this->closeConnection(system_clock::now() + seconds(1));
            }
        }

    }
}

void SpeakingClient::updateChannelClientProperties(bool channel_lock, bool notify) {
    ConnectedClient::updateChannelClientProperties(channel_lock, notify);
    this->max_idle_time = this->permissionValueFlagged(permission::i_client_max_idletime, this->currentChannel);
}

command_result SpeakingClient::handleCommand(Command &command) {
    if(this->connectionState() == ConnectionState::INIT_HIGH) {
        if(this->handshake.state == HandshakeState::BEGIN || this->handshake.state == HandshakeState::IDENTITY_PROOF) {
            command_result result;
            if(command.command() == "handshakebegin")
                result = this->handleCommandHandshakeBegin(command);
            else if(command.command() == "handshakeindentityproof")
                result = this->handleCommandHandshakeIdentityProof(command);
            else
                result = command_result{error::client_not_logged_in};

            if(result.error_code())
                this->postCommandHandler.push_back([&]{
                    this->closeConnection(system_clock::now() + seconds(1));
                });
            return result;
        }
    }
    return ConnectedClient::handleCommand(command);
}