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1200 lines
35 KiB
1200 lines
35 KiB
// Copyright © 2015 Jean-Luc Deltombe (LX3JL). All rights reserved.
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// urfd -- The universal reflector
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// Copyright © 2021 Thomas A. Early N7TAE
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#include <string.h>
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#include "Global.h"
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#include "DMRMMDVMClient.h"
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#include "DMRMMDVMProtocol.h"
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#include "BPTC19696.h"
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#include "RS129.h"
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#include "Golay2087.h"
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#include "QR1676.h"
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////////////////////////////////////////////////////////////////////////////////////////
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// define
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#define CMD_NONE 0
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#define CMD_LINK 1
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#define CMD_UNLINK 2
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////////////////////////////////////////////////////////////////////////////////////////
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// constants
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static uint8_t g_DmrSyncBSVoice[] = { 0x07,0x55,0xFD,0x7D,0xF7,0x5F,0x70 };
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static uint8_t g_DmrSyncBSData[] = { 0x0D,0xFF,0x57,0xD7,0x5D,0xF5,0xD0 };
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static uint8_t g_DmrSyncMSVoice[] = { 0x07,0xF7,0xD5,0xDD,0x57,0xDF,0xD0 };
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static uint8_t g_DmrSyncMSData[] = { 0x0D,0x5D,0x7F,0x77,0xFD,0x75,0x70 };
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////////////////////////////////////////////////////////////////////////////////////////
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// operation
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bool CDmrmmdvmProtocol::Initialize(const char *type, const EProtocol ptype, const uint16_t port, const bool has_ipv4, const bool has_ipv6)
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{
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m_DefaultId = g_Configure.GetUnsigned(g_Keys.mmdvm.defaultid);
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// base class
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if (! CProtocol::Initialize(type, ptype, port, has_ipv4, has_ipv6))
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return false;
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// update time
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m_LastKeepaliveTime.start();
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// random number generator
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time_t t;
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::srand((unsigned) time(&t));
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m_uiAuthSeed = (uint32_t)rand();
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// done
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////////////
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// task
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void CDmrmmdvmProtocol::Task(void)
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{
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CBuffer Buffer;
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CIp Ip;
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CCallsign Callsign;
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int iRssi;
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uint8_t Cmd;
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uint8_t CallType;
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std::unique_ptr<CDvHeaderPacket> Header;
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std::unique_ptr<CDvFramePacket> LastFrame;
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std::array<std::unique_ptr<CDvFramePacket>, 3> Frames;
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// handle incoming packets
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#if DMR_IPV6==true
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#if DMR_IPV4==true
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if ( ReceiveDS(Buffer, Ip, 20) )
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#else
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if ( Receive6(Buffer, Ip, 20) )
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#endif
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#else
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if ( Receive4(Buffer, Ip, 20) )
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#endif
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{
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//Buffer.DebugDump(g_Reflector.m_DebugFile);
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// crack the packet
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if ( IsValidDvFramePacket(Ip, Buffer, Header, Frames) )
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{
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for ( int i = 0; i < 3; i++ )
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{
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OnDvFramePacketIn(Frames.at(i), &Ip);
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}
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}
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else if ( IsValidDvHeaderPacket(Buffer, Header, &Cmd, &CallType) )
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{
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// callsign muted?
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if ( g_GateKeeper.MayTransmit(Header->GetMyCallsign(), Ip, EProtocol::dmrmmdvm) )
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{
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// handle it
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OnDvHeaderPacketIn(Header, Ip, Cmd, CallType);
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}
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}
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else if ( IsValidDvLastFramePacket(Buffer, LastFrame) )
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{
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OnDvFramePacketIn(LastFrame, &Ip);
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}
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else if ( IsValidConnectPacket(Buffer, &Callsign, Ip) )
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{
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std::cout << "DMRmmdvm connect packet from " << Callsign << " at " << Ip << std::endl;
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// callsign authorized?
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if ( g_GateKeeper.MayLink(Callsign, Ip, EProtocol::dmrmmdvm) )
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{
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// acknowledge the request
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EncodeConnectAckPacket(&Buffer, Callsign, m_uiAuthSeed);
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Send(Buffer, Ip);
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}
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else
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{
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// deny the request
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EncodeNackPacket(&Buffer, Callsign);
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Send(Buffer, Ip);
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}
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}
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else if ( IsValidAuthenticationPacket(Buffer, &Callsign, Ip) )
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{
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std::cout << "DMRmmdvm authentication packet from " << Callsign << " at " << Ip << std::endl;
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// callsign authorized?
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if ( g_GateKeeper.MayLink(Callsign, Ip, EProtocol::dmrmmdvm) )
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{
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// acknowledge the request
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EncodeAckPacket(&Buffer, Callsign);
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Send(Buffer, Ip);
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// add client if needed
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CClients *clients = g_Reflector.GetClients();
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std::shared_ptr<CClient>client = clients->FindClient(Callsign, Ip, EProtocol::dmrmmdvm);
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// client already connected ?
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if ( client == nullptr )
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{
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std::cout << "DMRmmdvm login from " << Callsign << " at " << Ip << std::endl;
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// create the client and append
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clients->AddClient(std::make_shared<CDmrmmdvmClient>(Callsign, Ip));
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}
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else
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{
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client->Alive();
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}
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// and done
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g_Reflector.ReleaseClients();
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}
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else
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{
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// deny the request
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EncodeNackPacket(&Buffer, Callsign);
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Send(Buffer, Ip);
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}
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}
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else if ( IsValidDisconnectPacket(Buffer, &Callsign) )
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{
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std::cout << "DMRmmdvm disconnect packet from " << Callsign << " at " << Ip << std::endl;
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// find client & remove it
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CClients *clients = g_Reflector.GetClients();
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std::shared_ptr<CClient>client = clients->FindClient(Ip, EProtocol::dmrmmdvm);
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if ( client != nullptr )
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{
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clients->RemoveClient(client);
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}
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g_Reflector.ReleaseClients();
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}
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else if ( IsValidConfigPacket(Buffer, &Callsign, Ip) )
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{
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std::cout << "DMRmmdvm configuration packet from " << Callsign << " at " << Ip << std::endl;
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// acknowledge the request
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EncodeAckPacket(&Buffer, Callsign);
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Send(Buffer, Ip);
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}
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else if ( IsValidKeepAlivePacket(Buffer, &Callsign) )
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{
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//std::cout << "DMRmmdvm keepalive packet from " << Callsign << " at " << Ip << std::endl;
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// find all clients with that callsign & ip and keep them alive
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CClients *clients = g_Reflector.GetClients();
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auto it = clients->begin();
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std::shared_ptr<CClient>client = nullptr;
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while ( (client = clients->FindNextClient(Callsign, Ip, EProtocol::dmrmmdvm, it)) != nullptr )
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{
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// acknowledge
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EncodeKeepAlivePacket(&Buffer, client);
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Send(Buffer, Ip);
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// and mark as alive
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client->Alive();
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}
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g_Reflector.ReleaseClients();
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}
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else if ( IsValidRssiPacket(Buffer, &Callsign, &iRssi) )
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{
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// std::cout << "DMRmmdvm RSSI packet from " << Callsign << " at " << Ip << std::endl
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// ignore...
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}
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else if ( IsValidOptionPacket(Buffer, &Callsign) )
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{
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std::cout << "DMRmmdvm options packet from " << Callsign << " at " << Ip << std::endl;
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// acknowledge the request
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EncodeAckPacket(&Buffer, Callsign);
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Send(Buffer, Ip);
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}
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else if ( Buffer.size() != 55 )
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{
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std::string title("Unknown DMRMMDVM packet from ");
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title += Ip.GetAddress();
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}
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}
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// handle end of streaming timeout
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CheckStreamsTimeout();
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// handle queue from reflector
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HandleQueue();
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// keep client alive
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if ( m_LastKeepaliveTime.time() > DMRMMDVM_KEEPALIVE_PERIOD )
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{
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//
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HandleKeepalives();
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// update time
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m_LastKeepaliveTime.start();
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////
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// streams helpers
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void CDmrmmdvmProtocol::OnDvHeaderPacketIn(std::unique_ptr<CDvHeaderPacket> &Header, const CIp &Ip, uint8_t cmd, uint8_t CallType)
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{
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bool lastheard = false;
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// find the stream
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auto stream = GetStream(Header->GetStreamId());
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if ( stream )
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{
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// stream already open
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// skip packet, but tickle the stream
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stream->Tickle();
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}
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else
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{
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CCallsign my(Header->GetMyCallsign());
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CCallsign rpt1(Header->GetRpt1Callsign());
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CCallsign rpt2(Header->GetRpt2Callsign());
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// no stream open yet, open a new one
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// firstfind this client
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std::shared_ptr<CClient>client = g_Reflector.GetClients()->FindClient(Ip, EProtocol::dmrmmdvm);
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if ( client )
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{
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// process cmd if any
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if ( !client->HasReflectorModule() )
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{
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// not linked yet
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if ( cmd == CMD_LINK )
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{
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if ( g_Reflector.IsValidModule(rpt2.GetCSModule()) )
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{
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std::cout << "DMRmmdvm client " << client->GetCallsign() << " linking on module " << rpt2.GetCSModule() << std::endl;
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// link
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client->SetReflectorModule(rpt2.GetCSModule());
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}
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else
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{
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std::cout << "DMRMMDVM node " << rpt1 << " link attempt on non-existing module" << std::endl;
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}
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}
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}
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else
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{
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// already linked
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if ( cmd == CMD_UNLINK )
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{
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std::cout << "DMRmmdvm client " << client->GetCallsign() << " unlinking" << std::endl;
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// unlink
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client->SetReflectorModule(' ');
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}
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else
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{
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// replace rpt2 module with currently linked module
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auto m = client->GetReflectorModule();
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Header->SetRpt2Module(m);
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rpt2.SetCSModule(m);
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}
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}
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// and now, re-check module is valid && that it's not a private call
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if ( g_Reflector.IsValidModule(rpt2.GetCSModule()) && (CallType == DMR_GROUP_CALL) )
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{
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// yes, try to open the stream
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if ( (stream = g_Reflector.OpenStream(Header, client)) != nullptr )
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{
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// keep the handle
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m_Streams[stream->GetStreamId()] = stream;
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lastheard = true;
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}
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}
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}
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else
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{
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lastheard = true;
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}
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// release
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g_Reflector.ReleaseClients();
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// update last heard
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if ( lastheard )
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{
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g_Reflector.GetUsers()->Hearing(my, rpt1, rpt2);
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g_Reflector.ReleaseUsers();
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////
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// queue helper
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void CDmrmmdvmProtocol::HandleQueue(void)
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{
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while (! m_Queue.IsEmpty())
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{
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// get the packet
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auto packet = m_Queue.Pop();
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// get our sender's id
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const auto mod = packet->GetPacketModule();
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// encode
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CBuffer buffer;
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// check if it's header
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if ( packet->IsDvHeader() )
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{
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// update local stream cache
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// this relies on queue feeder setting valid module id
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m_StreamsCache[mod].m_dvHeader = CDvHeaderPacket((const CDvHeaderPacket &)*packet.get());
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m_StreamsCache[mod].m_uiSeqId = 0;
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// encode it
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EncodeMMDVMHeaderPacket((CDvHeaderPacket &)*packet.get(), m_StreamsCache[mod].m_uiSeqId, &buffer);
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m_StreamsCache[mod].m_uiSeqId = 1;
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}
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// check if it's a last frame
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else if ( packet->IsLastPacket() )
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{
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// encode it
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EncodeLastMMDVMPacket(m_StreamsCache[mod].m_dvHeader, m_StreamsCache[mod].m_uiSeqId, &buffer);
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m_StreamsCache[mod].m_uiSeqId = (m_StreamsCache[mod].m_uiSeqId + 1) & 0xFF;
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}
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// otherwise, just a regular DV frame
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else
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{
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// update local stream cache or send triplet when needed
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switch ( packet->GetDmrPacketSubid() )
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{
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case 1:
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m_StreamsCache[mod].m_dvFrame0 = CDvFramePacket((const CDvFramePacket &)*packet.get());
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break;
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case 2:
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m_StreamsCache[mod].m_dvFrame1 = CDvFramePacket((const CDvFramePacket &)*packet.get());
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break;
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case 3:
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EncodeMMDVMPacket(m_StreamsCache[mod].m_dvHeader, m_StreamsCache[mod].m_dvFrame0, m_StreamsCache[mod].m_dvFrame1, (const CDvFramePacket &)*packet.get(), m_StreamsCache[mod].m_uiSeqId, &buffer);
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m_StreamsCache[mod].m_uiSeqId = (m_StreamsCache[mod].m_uiSeqId + 1) & 0xFF;
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break;
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default:
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break;
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}
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}
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// send it
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if ( buffer.size() > 0 )
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{
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// and push it to all our clients linked to the module and who are not streaming in
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CClients *clients = g_Reflector.GetClients();
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auto it = clients->begin();
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std::shared_ptr<CClient>client = nullptr;
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while ( (client = clients->FindNextClient(EProtocol::dmrmmdvm, it)) != nullptr )
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{
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// is this client busy ?
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if ( !client->IsAMaster() && (client->GetReflectorModule() == packet->GetPacketModule()) )
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{
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// no, send the packet
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Send(buffer, client->GetIp());
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}
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}
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g_Reflector.ReleaseClients();
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}
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////
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// keepalive helpers
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void CDmrmmdvmProtocol::HandleKeepalives(void)
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{
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// DMRhomebrew protocol keepalive request is client tasks
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// here, just check that all clients are still alive
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// and disconnect them if not
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// iterate on clients
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CClients *clients = g_Reflector.GetClients();
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auto it = clients->begin();
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std::shared_ptr<CClient>client = nullptr;
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while ( (client = clients->FindNextClient(EProtocol::dmrmmdvm, it)) != nullptr )
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{
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// is this client busy ?
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if ( client->IsAMaster() )
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{
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// yes, just tickle it
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client->Alive();
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}
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// check it's still with us
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else if ( !client->IsAlive() )
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{
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// no, disconnect
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CBuffer disconnect;
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Send(disconnect, client->GetIp());
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// remove it
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std::cout << "DMRmmdvm client " << client->GetCallsign() << " keepalive timeout" << std::endl;
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clients->RemoveClient(client);
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}
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}
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g_Reflector.ReleaseClients();
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}
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////////////////////////////////////////////////////////////////////////////////////////
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// packet decoding helpers
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bool CDmrmmdvmProtocol::IsValidKeepAlivePacket(const CBuffer &Buffer, CCallsign *callsign)
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{
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uint8_t tag[] = { 'R','P','T','P','I','N','G' };
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bool valid = false;
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if ( (Buffer.size() == 11) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
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{
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uint32_t uiRptrId = MAKEDWORD(MAKEWORD(Buffer.data()[10],Buffer.data()[9]),MAKEWORD(Buffer.data()[8],Buffer.data()[7]));
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callsign->SetDmrid(uiRptrId, true);
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callsign->SetCSModule(MMDVM_MODULE_ID);
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valid = callsign->IsValid();
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}
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return valid;
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}
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bool CDmrmmdvmProtocol::IsValidConnectPacket(const CBuffer &Buffer, CCallsign *callsign, const CIp &Ip)
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{
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uint8_t tag[] = { 'R','P','T','L' };
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bool valid = false;
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if ( (Buffer.size() == 8) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
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{
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uint32_t uiRptrId = MAKEDWORD(MAKEWORD(Buffer.data()[7],Buffer.data()[6]),MAKEWORD(Buffer.data()[5],Buffer.data()[4]));
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callsign->SetDmrid(uiRptrId, true);
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callsign->SetCSModule(MMDVM_MODULE_ID);
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valid = callsign->IsValid();
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if ( !valid)
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{
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std::cout << "Invalid callsign in DMRmmdvm RPTL packet from IP: " << Ip << " CS:" << *callsign << " DMRID:" << callsign->GetDmrid() << std::endl;
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}
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}
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return valid;
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}
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bool CDmrmmdvmProtocol::IsValidAuthenticationPacket(const CBuffer &Buffer, CCallsign *callsign, const CIp &Ip)
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{
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uint8_t tag[] = { 'R','P','T','K' };
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bool valid = false;
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if ( (Buffer.size() == 40) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
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{
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uint32_t uiRptrId = MAKEDWORD(MAKEWORD(Buffer.data()[7],Buffer.data()[6]),MAKEWORD(Buffer.data()[5],Buffer.data()[4]));
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callsign->SetDmrid(uiRptrId, true);
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callsign->SetCSModule(MMDVM_MODULE_ID);
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valid = callsign->IsValid();
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if ( !valid)
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{
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std::cout << "Invalid callsign in DMRmmdvm RPTK packet from IP: " << Ip << " CS:" << *callsign << " DMRID:" << callsign->GetDmrid() << std::endl;
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}
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|
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
bool CDmrmmdvmProtocol::IsValidDisconnectPacket(const CBuffer &Buffer, CCallsign *callsign)
|
|
{
|
|
uint8_t tag[] = { 'R','P','T','C','L' };
|
|
|
|
bool valid = false;
|
|
if ( (Buffer.size() == 13) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
|
|
{
|
|
uint32_t uiRptrId = MAKEDWORD(MAKEWORD(Buffer.data()[7],Buffer.data()[6]),MAKEWORD(Buffer.data()[5],Buffer.data()[4]));
|
|
callsign->SetDmrid(uiRptrId, true);
|
|
callsign->SetCSModule(MMDVM_MODULE_ID);
|
|
valid = callsign->IsValid();
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
bool CDmrmmdvmProtocol::IsValidConfigPacket(const CBuffer &Buffer, CCallsign *callsign, const CIp &Ip)
|
|
{
|
|
uint8_t tag[] = { 'R','P','T','C' };
|
|
|
|
bool valid = false;
|
|
if ( (Buffer.size() == 302) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
|
|
{
|
|
uint32_t uiRptrId = MAKEDWORD(MAKEWORD(Buffer.data()[7],Buffer.data()[6]),MAKEWORD(Buffer.data()[5],Buffer.data()[4]));
|
|
callsign->SetDmrid(uiRptrId, true);
|
|
callsign->SetCSModule(MMDVM_MODULE_ID);
|
|
valid = callsign->IsValid();
|
|
if ( !valid)
|
|
{
|
|
std::cout << "Invalid callsign in DMRmmdvm RPTC packet from IP: " << Ip << " CS:" << *callsign << " DMRID:" << callsign->GetDmrid() << std::endl;
|
|
}
|
|
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
bool CDmrmmdvmProtocol::IsValidOptionPacket(const CBuffer &Buffer, CCallsign *callsign)
|
|
{
|
|
uint8_t tag[] = { 'R','P','T','O' };
|
|
|
|
bool valid = false;
|
|
if ( (Buffer.size() >= 8) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
|
|
{
|
|
uint32_t uiRptrId = MAKEDWORD(MAKEWORD(Buffer.data()[7],Buffer.data()[6]),MAKEWORD(Buffer.data()[5],Buffer.data()[4]));
|
|
callsign->SetDmrid(uiRptrId, true);
|
|
callsign->SetCSModule(MMDVM_MODULE_ID);
|
|
valid = callsign->IsValid();
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
bool CDmrmmdvmProtocol::IsValidRssiPacket(const CBuffer &Buffer, CCallsign *callsign, int *rssi)
|
|
{
|
|
uint8_t tag[] = { 'R','P','T','I','N','T','R' };
|
|
|
|
bool valid = false;
|
|
if ( (Buffer.size() == 17) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
|
|
{
|
|
// ignore rest of it, as not used
|
|
// dmrid is asci hex on 8 bytes
|
|
// rssi is ascii :x-xx
|
|
valid = true;
|
|
}
|
|
return valid;
|
|
}
|
|
|
|
bool CDmrmmdvmProtocol::IsValidDvHeaderPacket(const CBuffer &Buffer, std::unique_ptr<CDvHeaderPacket> &header, uint8_t *cmd, uint8_t *CallType)
|
|
{
|
|
uint8_t tag[] = { 'D','M','R','D' };
|
|
|
|
*cmd = CMD_NONE;
|
|
|
|
if ( (Buffer.size() == 55) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
|
|
{
|
|
// frame details
|
|
uint8_t uiFrameType = (Buffer.data()[15] & 0x30) >> 4;
|
|
uint8_t uiSlot = (Buffer.data()[15] & 0x80) ? DMR_SLOT2 : DMR_SLOT1;
|
|
uint8_t uiCallType = (Buffer.data()[15] & 0x40) ? DMR_PRIVATE_CALL : DMR_GROUP_CALL;
|
|
uint8_t uiSlotType = Buffer.data()[15] & 0x0F;
|
|
//std::cout << (int)uiSlot << std::endl;
|
|
if ( (uiFrameType == DMRMMDVM_FRAMETYPE_DATASYNC) &&
|
|
(uiSlot == DMRMMDVM_REFLECTOR_SLOT) &&
|
|
(uiSlotType == MMDVM_SLOTTYPE_HEADER) )
|
|
{
|
|
// extract sync
|
|
uint8_t dmrsync[7];
|
|
dmrsync[0] = Buffer.data()[33] & 0x0F;
|
|
memcpy(&dmrsync[1], &Buffer.data()[34], 5);
|
|
dmrsync[6] = Buffer.data()[39] & 0xF0;
|
|
// and check
|
|
if ( (memcmp(dmrsync, g_DmrSyncMSData, sizeof(dmrsync)) == 0) ||
|
|
(memcmp(dmrsync, g_DmrSyncBSData, sizeof(dmrsync)) == 0))
|
|
{
|
|
// get payload
|
|
//CBPTC19696 bptc;
|
|
//uint8_t lcdata[12];
|
|
//bptc.decode(&(Buffer.data()[20]), lcdata);
|
|
|
|
// crack DMR header
|
|
//uint8_t uiSeqId = Buffer.data()[4];
|
|
uint32_t uiSrcId = MAKEDWORD(MAKEWORD(Buffer.data()[7],Buffer.data()[6]),MAKEWORD(Buffer.data()[5],0));
|
|
uint32_t uiDstId = MAKEDWORD(MAKEWORD(Buffer.data()[10],Buffer.data()[9]),MAKEWORD(Buffer.data()[8],0));
|
|
uint32_t uiRptrId = MAKEDWORD(MAKEWORD(Buffer.data()[14],Buffer.data()[13]),MAKEWORD(Buffer.data()[12],Buffer.data()[11]));
|
|
//uint8_t uiVoiceSeq = (Buffer.data()[15] & 0x0F);
|
|
uint32_t uiStreamId = *(uint32_t *)(&Buffer.data()[16]);
|
|
|
|
// call type
|
|
*CallType = uiCallType;
|
|
|
|
// link/unlink command ?
|
|
if ( uiDstId == 4000 )
|
|
{
|
|
*cmd = CMD_UNLINK;
|
|
}
|
|
else if ( DmrDstIdToModule(uiDstId) != ' ' )
|
|
{
|
|
*cmd = CMD_LINK;
|
|
}
|
|
else
|
|
{
|
|
*cmd = CMD_NONE;
|
|
}
|
|
|
|
// build DVHeader
|
|
CCallsign csMY = CCallsign("", uiSrcId);
|
|
CCallsign rpt1 = CCallsign("", uiRptrId);
|
|
rpt1.SetCSModule(MMDVM_MODULE_ID);
|
|
CCallsign rpt2 = m_ReflectorCallsign;
|
|
rpt2.SetCSModule(DmrDstIdToModule(uiDstId));
|
|
|
|
// and packet
|
|
header = std::unique_ptr<CDvHeaderPacket>(new CDvHeaderPacket(uiSrcId, CCallsign("CQCQCQ"), rpt1, rpt2, uiStreamId, 0, 0));
|
|
if ( header && header->IsValid() )
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool CDmrmmdvmProtocol::IsValidDvFramePacket(const CIp &Ip, const CBuffer &Buffer, std::unique_ptr<CDvHeaderPacket> &header, std::array<std::unique_ptr<CDvFramePacket>, 3> &frames)
|
|
{
|
|
uint8_t tag[] = { 'D','M','R','D' };
|
|
|
|
if ( (Buffer.size() == 55) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
|
|
{
|
|
// frame details
|
|
uint8_t uiFrameType = (Buffer.data()[15] & 0x30) >> 4;
|
|
uint8_t uiSlot = (Buffer.data()[15] & 0x80) ? DMR_SLOT2 : DMR_SLOT1;
|
|
uint8_t uiCallType = (Buffer.data()[15] & 0x40) ? DMR_PRIVATE_CALL : DMR_GROUP_CALL;
|
|
if ( ((uiFrameType == DMRMMDVM_FRAMETYPE_VOICE) || (uiFrameType == DMRMMDVM_FRAMETYPE_VOICESYNC)) &&
|
|
(uiSlot == DMRMMDVM_REFLECTOR_SLOT) && (uiCallType == DMR_GROUP_CALL) )
|
|
{
|
|
// crack DMR header
|
|
//uint8_t uiSeqId = Buffer.data()[4];
|
|
uint32_t uiSrcId = MAKEDWORD(MAKEWORD(Buffer.data()[7],Buffer.data()[6]),MAKEWORD(Buffer.data()[5],0));
|
|
uint32_t uiDstId = MAKEDWORD(MAKEWORD(Buffer.data()[10],Buffer.data()[9]),MAKEWORD(Buffer.data()[8],0));
|
|
uint32_t uiRptrId = MAKEDWORD(MAKEWORD(Buffer.data()[14],Buffer.data()[13]),MAKEWORD(Buffer.data()[12],Buffer.data()[11]));
|
|
uint8_t uiVoiceSeq = (Buffer.data()[15] & 0x0F);
|
|
uint32_t uiStreamId = *(uint32_t *)(&Buffer.data()[16]);
|
|
|
|
auto stream = GetStream(uiStreamId, &Ip);
|
|
if ( !stream )
|
|
{
|
|
std::cout << std::showbase << std::hex;
|
|
std::cout << "Late entry DMR voice frame, creating DMR header for DMR stream ID " << ntohl(uiStreamId) << std::noshowbase << std::dec << " on " << Ip << std::endl;
|
|
std::cout << std::noshowbase << std::dec;
|
|
uint8_t cmd;
|
|
|
|
// link/unlink command ?
|
|
if ( uiDstId == 4000 )
|
|
{
|
|
cmd = CMD_UNLINK;
|
|
}
|
|
else if ( DmrDstIdToModule(uiDstId) != ' ' )
|
|
{
|
|
cmd = CMD_LINK;
|
|
}
|
|
else
|
|
{
|
|
cmd = CMD_NONE;
|
|
}
|
|
|
|
// build DVHeader
|
|
CCallsign csMY = CCallsign("", uiSrcId);
|
|
CCallsign rpt1 = CCallsign("", uiRptrId);
|
|
rpt1.SetCSModule(MMDVM_MODULE_ID);
|
|
CCallsign rpt2 = m_ReflectorCallsign;
|
|
rpt2.SetCSModule(DmrDstIdToModule(uiDstId));
|
|
|
|
// and packet
|
|
header = std::unique_ptr<CDvHeaderPacket>(new CDvHeaderPacket(uiSrcId, CCallsign("CQCQCQ"), rpt1, rpt2, uiStreamId, 0, 0));
|
|
|
|
if ( g_GateKeeper.MayTransmit(header->GetMyCallsign(), Ip, EProtocol::dmrmmdvm) )
|
|
{
|
|
// handle it
|
|
OnDvHeaderPacketIn(header, Ip, cmd, uiCallType);
|
|
}
|
|
}
|
|
|
|
// crack payload
|
|
uint8_t dmrframe[33];
|
|
uint8_t dmr3ambe[27];
|
|
uint8_t dmrambe[9];
|
|
uint8_t dmrsync[7];
|
|
// get the 33 bytes ambe
|
|
memcpy(dmrframe, &(Buffer.data()[20]), 33);
|
|
// extract the 3 ambe frames
|
|
memcpy(dmr3ambe, dmrframe, 14);
|
|
dmr3ambe[13] &= 0xF0;
|
|
dmr3ambe[13] |= (dmrframe[19] & 0x0F);
|
|
memcpy(&dmr3ambe[14], &dmrframe[20], 13);
|
|
// extract sync
|
|
dmrsync[0] = dmrframe[13] & 0x0F;
|
|
memcpy(&dmrsync[1], &dmrframe[14], 5);
|
|
dmrsync[6] = dmrframe[19] & 0xF0;
|
|
|
|
// debug
|
|
//CBuffer dump;
|
|
//dump.Set(dmrsync, 6);
|
|
//dump.DebugDump(g_Reflector.m_DebugFile);
|
|
|
|
// and create 3 dv frames
|
|
// frame1
|
|
memcpy(dmrambe, &dmr3ambe[0], 9);
|
|
frames[0] = std::unique_ptr<CDvFramePacket>(new CDvFramePacket(dmrambe, dmrsync, uiStreamId, uiVoiceSeq, 1, false));
|
|
|
|
// frame2
|
|
memcpy(dmrambe, &dmr3ambe[9], 9);
|
|
frames[1] = std::unique_ptr<CDvFramePacket>(new CDvFramePacket(dmrambe, dmrsync, uiStreamId, uiVoiceSeq, 2, false));
|
|
|
|
// frame3
|
|
memcpy(dmrambe, &dmr3ambe[18], 9);
|
|
frames[2] = std::unique_ptr<CDvFramePacket>(new CDvFramePacket(dmrambe, dmrsync, uiStreamId, uiVoiceSeq, 3, false));
|
|
|
|
// check
|
|
if (frames[0] && frames[1] && frames[2])
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool CDmrmmdvmProtocol::IsValidDvLastFramePacket(const CBuffer &Buffer, std::unique_ptr<CDvFramePacket> &frame)
|
|
{
|
|
uint8_t tag[] = { 'D','M','R','D' };
|
|
|
|
if ( (Buffer.size() == 55) && (Buffer.Compare(tag, sizeof(tag)) == 0) )
|
|
{
|
|
// frame details
|
|
uint8_t uiFrameType = (Buffer.data()[15] & 0x30) >> 4;
|
|
uint8_t uiSlot = (Buffer.data()[15] & 0x80) ? DMR_SLOT2 : DMR_SLOT1;
|
|
//uint8_t uiCallType = (Buffer.data()[15] & 0x40) ? DMR_PRIVATE_CALL : DMR_GROUP_CALL;
|
|
uint8_t uiSlotType = Buffer.data()[15] & 0x0F;
|
|
//std::cout << (int)uiSlot << std::endl;
|
|
if ( (uiFrameType == DMRMMDVM_FRAMETYPE_DATASYNC) &&
|
|
(uiSlot == DMRMMDVM_REFLECTOR_SLOT) &&
|
|
(uiSlotType == MMDVM_SLOTTYPE_TERMINATOR) )
|
|
{
|
|
// extract sync
|
|
uint8_t dmrsync[7];
|
|
dmrsync[0] = Buffer.data()[33] & 0x0F;
|
|
memcpy(&dmrsync[1], &Buffer.data()[34], 5);
|
|
dmrsync[6] = Buffer.data()[39] & 0xF0;
|
|
// and check
|
|
if ( (memcmp(dmrsync, g_DmrSyncMSData, sizeof(dmrsync)) == 0) ||
|
|
(memcmp(dmrsync, g_DmrSyncBSData, sizeof(dmrsync)) == 0))
|
|
{
|
|
// get payload
|
|
//CBPTC19696 bptc;
|
|
//uint8_t lcdata[12];
|
|
//bptc.decode(&(Buffer.data()[20]), lcdata);
|
|
|
|
// crack DMR header
|
|
//uint8_t uiSeqId = Buffer.data()[4];
|
|
//uint32_t uiSrcId = MAKEDWORD(MAKEWORD(Buffer.data()[7],Buffer.data()[6]),MAKEWORD(Buffer.data()[5],0));
|
|
//uint32_t uiDstId = MAKEDWORD(MAKEWORD(Buffer.data()[10],Buffer.data()[9]),MAKEWORD(Buffer.data()[8],0));
|
|
//uint32_t uiRptrId = MAKEDWORD(MAKEWORD(Buffer.data()[14],Buffer.data()[13]),MAKEWORD(Buffer.data()[12],Buffer.data()[11]));
|
|
//uint8_t uiVoiceSeq = (Buffer.data()[15] & 0x0F);
|
|
uint32_t uiStreamId = *(uint32_t *)(&Buffer.data()[16]);
|
|
|
|
// dummy ambe
|
|
uint8_t ambe[9];
|
|
memset(ambe, 0, sizeof(ambe));
|
|
|
|
|
|
// and packet
|
|
frame = std::unique_ptr<CDvFramePacket>(new CDvFramePacket(ambe, dmrsync, uiStreamId, 0, 0, true));
|
|
if (frame)
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
// packet encoding helpers
|
|
|
|
void CDmrmmdvmProtocol::EncodeKeepAlivePacket(CBuffer *Buffer, std::shared_ptr<CClient>Client)
|
|
{
|
|
uint8_t tag[] = { 'M','S','T','P','O','N','G' };
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
uint32_t uiDmrId = Client->GetCallsign().GetDmrid();
|
|
Buffer->Append((uint8_t *)&uiDmrId, 4);
|
|
}
|
|
|
|
void CDmrmmdvmProtocol::EncodeAckPacket(CBuffer *Buffer, const CCallsign &Callsign)
|
|
{
|
|
uint8_t tag[] = { 'R','P','T','A','C','K' };
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
}
|
|
|
|
void CDmrmmdvmProtocol::EncodeConnectAckPacket(CBuffer *Buffer, const CCallsign &Callsign, uint32_t AuthSeed)
|
|
{
|
|
uint8_t tag[] = { 'R','P','T','A','C','K' };
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
Buffer->Append(AuthSeed);
|
|
}
|
|
|
|
void CDmrmmdvmProtocol::EncodeNackPacket(CBuffer *Buffer, const CCallsign &Callsign)
|
|
{
|
|
uint8_t tag[] = { 'M','S','T','N','A','K' };
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
}
|
|
|
|
void CDmrmmdvmProtocol::EncodeClosePacket(CBuffer *Buffer, std::shared_ptr<CClient>Client)
|
|
{
|
|
uint8_t tag[] = { 'M','S','T','C','L' };
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
}
|
|
|
|
|
|
bool CDmrmmdvmProtocol::EncodeMMDVMHeaderPacket(const CDvHeaderPacket &Packet, uint8_t seqid, CBuffer *Buffer) const
|
|
{
|
|
uint8_t tag[] = { 'D','M','R','D' };
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
|
|
// DMR header
|
|
// uiSeqId
|
|
Buffer->Append((uint8_t)seqid);
|
|
// uiSrcId
|
|
uint32_t uiSrcId = Packet.GetMyCallsign().GetDmrid();
|
|
AppendDmrIdToBuffer(Buffer, uiSrcId);
|
|
// uiDstId = TG9
|
|
uint32_t uiDstId = 9; // ModuleToDmrDestId(Packet.GetRpt2Module());
|
|
AppendDmrIdToBuffer(Buffer, uiDstId);
|
|
// uiRptrId
|
|
uint32_t uiRptrId = Packet.GetRpt1Callsign().GetDmrid();
|
|
AppendDmrRptrIdToBuffer(Buffer, uiRptrId);
|
|
// uiBitField
|
|
uint8_t uiBitField =
|
|
(DMRMMDVM_FRAMETYPE_DATASYNC << 4) |
|
|
((DMRMMDVM_REFLECTOR_SLOT == DMR_SLOT2) ? 0x80 : 0x00) |
|
|
MMDVM_SLOTTYPE_HEADER;
|
|
Buffer->Append((uint8_t)uiBitField);
|
|
// uiStreamId
|
|
uint32_t uiStreamId = Packet.GetStreamId();
|
|
Buffer->Append((uint32_t)uiStreamId);
|
|
|
|
// Payload
|
|
AppendVoiceLCToBuffer(Buffer, uiSrcId);
|
|
|
|
// BER
|
|
Buffer->Append((uint8_t)0);
|
|
|
|
// RSSI
|
|
Buffer->Append((uint8_t)0);
|
|
|
|
// done
|
|
return true;
|
|
}
|
|
|
|
void CDmrmmdvmProtocol::EncodeMMDVMPacket(const CDvHeaderPacket &Header, const CDvFramePacket &DvFrame0, const CDvFramePacket &DvFrame1, const CDvFramePacket &DvFrame2, uint8_t seqid, CBuffer *Buffer) const
|
|
{
|
|
uint8_t tag[] = { 'D','M','R','D' };
|
|
Buffer->Set(tag, sizeof(tag));
|
|
uint8_t cs[12];
|
|
|
|
// DMR header
|
|
// uiSeqId
|
|
Buffer->Append((uint8_t)seqid);
|
|
// uiSrcId
|
|
uint32_t uiSrcId = Header.GetMyCallsign().GetDmrid();
|
|
DvFrame0.GetMyCallsign().GetCallsign(cs);
|
|
|
|
if(uiSrcId == 0){
|
|
uiSrcId = DvFrame0.GetMyCallsign().GetDmrid();
|
|
}
|
|
if(uiSrcId == 0){
|
|
uiSrcId = DvFrame1.GetMyCallsign().GetDmrid();
|
|
}
|
|
if(uiSrcId == 0){
|
|
uiSrcId = DvFrame2.GetMyCallsign().GetDmrid();
|
|
}
|
|
if(uiSrcId == 0){
|
|
uiSrcId = m_DefaultId;
|
|
}
|
|
|
|
AppendDmrIdToBuffer(Buffer, uiSrcId);
|
|
// uiDstId = TG9
|
|
uint32_t uiDstId = 9; // ModuleToDmrDestId(Header.GetRpt2Module());
|
|
AppendDmrIdToBuffer(Buffer, uiDstId);
|
|
// uiRptrId
|
|
uint32_t uiRptrId = Header.GetRpt1Callsign().GetDmrid();
|
|
AppendDmrRptrIdToBuffer(Buffer, uiRptrId);
|
|
// uiBitField
|
|
uint8_t uiBitField =
|
|
((DMRMMDVM_REFLECTOR_SLOT == DMR_SLOT2) ? 0x80 : 0x00);
|
|
if ( DvFrame0.GetDmrPacketId() == 0 )
|
|
{
|
|
uiBitField |= (DMRMMDVM_FRAMETYPE_VOICESYNC << 4);
|
|
}
|
|
else
|
|
{
|
|
uiBitField |= (DMRMMDVM_FRAMETYPE_VOICE << 4);
|
|
}
|
|
uiBitField |= (DvFrame0.GetDmrPacketId() & 0x0F);
|
|
Buffer->Append((uint8_t)uiBitField);
|
|
|
|
// uiStreamId
|
|
uint32_t uiStreamId = Header.GetStreamId();
|
|
Buffer->Append((uint32_t)uiStreamId);
|
|
|
|
// Payload
|
|
// frame0
|
|
Buffer->ReplaceAt(20, DvFrame0.GetCodecData(ECodecType::dmr), 9);
|
|
// 1/2 frame1
|
|
Buffer->ReplaceAt(29, DvFrame1.GetCodecData(ECodecType::dmr), 5);
|
|
Buffer->ReplaceAt(33, (uint8_t)(Buffer->at(33) & 0xF0));
|
|
// 1/2 frame1
|
|
Buffer->ReplaceAt(39, DvFrame1.GetCodecData(ECodecType::dmr)+4, 5);
|
|
Buffer->ReplaceAt(39, (uint8_t)(Buffer->at(39) & 0x0F));
|
|
// frame2
|
|
Buffer->ReplaceAt(44, DvFrame2.GetCodecData(ECodecType::dmr), 9);
|
|
|
|
// sync or embedded signaling
|
|
ReplaceEMBInBuffer(Buffer, DvFrame0.GetDmrPacketId());
|
|
|
|
// debug
|
|
//CBuffer dump;
|
|
//dump.Set(&(Buffer->data()[33]), 7);
|
|
//dump.DebugDump(g_Reflector.m_DebugFile);
|
|
|
|
// BER
|
|
Buffer->Append((uint8_t)0);
|
|
|
|
// RSSI
|
|
Buffer->Append((uint8_t)0);
|
|
}
|
|
|
|
|
|
void CDmrmmdvmProtocol::EncodeLastMMDVMPacket(const CDvHeaderPacket &Packet, uint8_t seqid, CBuffer *Buffer) const
|
|
{
|
|
uint8_t tag[] = { 'D','M','R','D' };
|
|
|
|
Buffer->Set(tag, sizeof(tag));
|
|
|
|
// DMR header
|
|
// uiSeqId
|
|
Buffer->Append((uint8_t)seqid);
|
|
// uiSrcId
|
|
uint32_t uiSrcId = Packet.GetMyCallsign().GetDmrid();
|
|
AppendDmrIdToBuffer(Buffer, uiSrcId);
|
|
// uiDstId
|
|
uint32_t uiDstId = 9; //ModuleToDmrDestId(Packet.GetRpt2Module());
|
|
AppendDmrIdToBuffer(Buffer, uiDstId);
|
|
// uiRptrId
|
|
uint32_t uiRptrId = Packet.GetRpt1Callsign().GetDmrid();
|
|
AppendDmrRptrIdToBuffer(Buffer, uiRptrId);
|
|
// uiBitField
|
|
uint8_t uiBitField =
|
|
(DMRMMDVM_FRAMETYPE_DATASYNC << 4) |
|
|
((DMRMMDVM_REFLECTOR_SLOT == DMR_SLOT2) ? 0x80 : 0x00) |
|
|
MMDVM_SLOTTYPE_TERMINATOR;
|
|
Buffer->Append((uint8_t)uiBitField);
|
|
// uiStreamId
|
|
uint32_t uiStreamId = Packet.GetStreamId();
|
|
Buffer->Append((uint32_t)uiStreamId);
|
|
|
|
// Payload
|
|
AppendTerminatorLCToBuffer(Buffer, uiSrcId);
|
|
|
|
// BER
|
|
Buffer->Append((uint8_t)0);
|
|
|
|
// RSSI
|
|
Buffer->Append((uint8_t)0);
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
// DestId to Module helper
|
|
|
|
char CDmrmmdvmProtocol::DmrDstIdToModule(uint32_t tg) const
|
|
{
|
|
// is it a 4xxx ?
|
|
if (tg > 4000 && tg < 4027)
|
|
{
|
|
const char mod = 'A' + (tg - 4001U);
|
|
if (g_Reflector.IsValidModule(mod))
|
|
{
|
|
return mod;
|
|
}
|
|
}
|
|
return ' ';
|
|
}
|
|
|
|
uint32_t CDmrmmdvmProtocol::ModuleToDmrDestId(char m) const
|
|
{
|
|
return (uint32_t)(m - 'A')+4001;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
// Buffer & LC helpers
|
|
|
|
void CDmrmmdvmProtocol::AppendVoiceLCToBuffer(CBuffer *buffer, uint32_t uiSrcId) const
|
|
{
|
|
uint8_t payload[33];
|
|
|
|
// fill payload
|
|
CBPTC19696 bptc;
|
|
memset(payload, 0, sizeof(payload));
|
|
// LC data
|
|
uint8_t lc[12];
|
|
{
|
|
memset(lc, 0, sizeof(lc));
|
|
// uiDstId = TG9
|
|
lc[5] = 9;
|
|
// uiSrcId
|
|
lc[6] = (uint8_t)LOBYTE(HIWORD(uiSrcId));
|
|
lc[7] = (uint8_t)HIBYTE(LOWORD(uiSrcId));
|
|
lc[8] = (uint8_t)LOBYTE(LOWORD(uiSrcId));
|
|
// parity
|
|
uint8_t parity[4];
|
|
CRS129::encode(lc, 9, parity);
|
|
lc[9] = parity[2] ^ DMR_VOICE_LC_HEADER_CRC_MASK;
|
|
lc[10] = parity[1] ^ DMR_VOICE_LC_HEADER_CRC_MASK;
|
|
lc[11] = parity[0] ^ DMR_VOICE_LC_HEADER_CRC_MASK;
|
|
}
|
|
// sync
|
|
memcpy(payload+13, g_DmrSyncBSData, sizeof(g_DmrSyncBSData));
|
|
// slot type
|
|
{
|
|
// slot type
|
|
uint8_t slottype[3];
|
|
memset(slottype, 0, sizeof(slottype));
|
|
slottype[0] = (DMRMMDVM_REFLECTOR_COLOUR << 4) & 0xF0;
|
|
slottype[0] |= (DMR_DT_VOICE_LC_HEADER << 0) & 0x0FU;
|
|
CGolay2087::encode(slottype);
|
|
payload[12U] = (payload[12U] & 0xC0U) | ((slottype[0U] >> 2) & 0x3FU);
|
|
payload[13U] = (payload[13U] & 0x0FU) | ((slottype[0U] << 6) & 0xC0U) | ((slottype[1U] >> 2) & 0x30U);
|
|
payload[19U] = (payload[19U] & 0xF0U) | ((slottype[1U] >> 2) & 0x0FU);
|
|
payload[20U] = (payload[20U] & 0x03U) | ((slottype[1U] << 6) & 0xC0U) | ((slottype[2U] >> 2) & 0x3CU);
|
|
|
|
}
|
|
// and encode
|
|
bptc.encode(lc, payload);
|
|
|
|
// and append
|
|
buffer->Append(payload, sizeof(payload));
|
|
}
|
|
|
|
void CDmrmmdvmProtocol::AppendTerminatorLCToBuffer(CBuffer *buffer, uint32_t uiSrcId) const
|
|
{
|
|
uint8_t payload[33];
|
|
|
|
// fill payload
|
|
CBPTC19696 bptc;
|
|
memset(payload, 0, sizeof(payload));
|
|
// LC data
|
|
uint8_t lc[12];
|
|
{
|
|
memset(lc, 0, sizeof(lc));
|
|
// uiDstId = TG9
|
|
lc[5] = 9;
|
|
// uiSrcId
|
|
lc[6] = (uint8_t)LOBYTE(HIWORD(uiSrcId));
|
|
lc[7] = (uint8_t)HIBYTE(LOWORD(uiSrcId));
|
|
lc[8] = (uint8_t)LOBYTE(LOWORD(uiSrcId));
|
|
// parity
|
|
uint8_t parity[4];
|
|
CRS129::encode(lc, 9, parity);
|
|
lc[9] = parity[2] ^ DMR_TERMINATOR_WITH_LC_CRC_MASK;
|
|
lc[10] = parity[1] ^ DMR_TERMINATOR_WITH_LC_CRC_MASK;
|
|
lc[11] = parity[0] ^ DMR_TERMINATOR_WITH_LC_CRC_MASK;
|
|
}
|
|
// sync
|
|
memcpy(payload+13, g_DmrSyncBSData, sizeof(g_DmrSyncBSData));
|
|
// slot type
|
|
{
|
|
// slot type
|
|
uint8_t slottype[3];
|
|
memset(slottype, 0, sizeof(slottype));
|
|
slottype[0] = (DMRMMDVM_REFLECTOR_COLOUR << 4) & 0xF0;
|
|
slottype[0] |= (DMR_DT_TERMINATOR_WITH_LC << 0) & 0x0FU;
|
|
CGolay2087::encode(slottype);
|
|
payload[12U] = (payload[12U] & 0xC0U) | ((slottype[0U] >> 2) & 0x3FU);
|
|
payload[13U] = (payload[13U] & 0x0FU) | ((slottype[0U] << 6) & 0xC0U) | ((slottype[1U] >> 2) & 0x30U);
|
|
payload[19U] = (payload[19U] & 0xF0U) | ((slottype[1U] >> 2) & 0x0FU);
|
|
payload[20U] = (payload[20U] & 0x03U) | ((slottype[1U] << 6) & 0xC0U) | ((slottype[2U] >> 2) & 0x3CU);
|
|
}
|
|
// and encode
|
|
bptc.encode(lc, payload);
|
|
|
|
// and append
|
|
buffer->Append(payload, sizeof(payload));
|
|
}
|
|
|
|
void CDmrmmdvmProtocol::ReplaceEMBInBuffer(CBuffer *buffer, uint8_t uiDmrPacketId) const
|
|
{
|
|
// voice packet A ?
|
|
if ( uiDmrPacketId == 0 )
|
|
{
|
|
// sync
|
|
buffer->ReplaceAt(33, (uint8_t)(buffer->at(33) | (g_DmrSyncBSVoice[0] & 0x0F)));
|
|
buffer->ReplaceAt(34, g_DmrSyncBSVoice+1, 5);
|
|
buffer->ReplaceAt(39, (uint8_t)(buffer->at(39) | (g_DmrSyncBSVoice[6] & 0xF0)));
|
|
}
|
|
// voice packet B,C,D,E ?
|
|
else if ( (uiDmrPacketId >= 1) && (uiDmrPacketId <= 4 ) )
|
|
{
|
|
// EMB LC
|
|
uint8_t emb[2];
|
|
emb[0] = (DMRMMDVM_REFLECTOR_COLOUR << 4) & 0xF0;
|
|
//emb[0] |= PI ? 0x08U : 0x00;
|
|
//emb[0] |= (LCSS << 1) & 0x06;
|
|
emb[1] = 0x00;
|
|
// encode
|
|
CQR1676::encode(emb);
|
|
// and append
|
|
buffer->ReplaceAt(33, (uint8_t)((buffer->at(33) & 0xF0) | ((emb[0U] >> 4) & 0x0F)));
|
|
buffer->ReplaceAt(34, (uint8_t)((buffer->at(34) & 0x0F) | ((emb[0U] << 4) & 0xF0)));
|
|
buffer->ReplaceAt(34, (uint8_t)(buffer->at(34) & 0xF0));
|
|
buffer->ReplaceAt(35, (uint8_t)0);
|
|
buffer->ReplaceAt(36, (uint8_t)0);
|
|
buffer->ReplaceAt(37, (uint8_t)0);
|
|
buffer->ReplaceAt(38, (uint8_t)(buffer->at(38) & 0x0F));
|
|
buffer->ReplaceAt(38, (uint8_t)((buffer->at(38) & 0xF0) | ((emb[1U] >> 4) & 0x0F)));
|
|
buffer->ReplaceAt(39, (uint8_t)((buffer->at(39) & 0x0F) | ((emb[1U] << 4) & 0xF0)));
|
|
}
|
|
// voice packet F
|
|
else
|
|
{
|
|
// nullptr
|
|
uint8_t emb[2];
|
|
emb[0] = (DMRMMDVM_REFLECTOR_COLOUR << 4) & 0xF0;
|
|
//emb[0] |= PI ? 0x08U : 0x00;
|
|
//emb[0] |= (LCSS << 1) & 0x06;
|
|
emb[1] = 0x00;
|
|
// encode
|
|
CQR1676::encode(emb);
|
|
// and append
|
|
buffer->ReplaceAt(33, (uint8_t)((buffer->at(33) & 0xF0) | ((emb[0U] >> 4) & 0x0F)));
|
|
buffer->ReplaceAt(34, (uint8_t)((buffer->at(34) & 0x0F) | ((emb[0U] << 4) & 0xF0)));
|
|
buffer->ReplaceAt(34, (uint8_t)(buffer->at(34) & 0xF0));
|
|
buffer->ReplaceAt(35, (uint8_t)0);
|
|
buffer->ReplaceAt(36, (uint8_t)0);
|
|
buffer->ReplaceAt(37, (uint8_t)0);
|
|
buffer->ReplaceAt(38, (uint8_t)(buffer->at(38) & 0x0F));
|
|
buffer->ReplaceAt(38, (uint8_t)((buffer->at(38) & 0xF0) | ((emb[1U] >> 4) & 0x0F)));
|
|
buffer->ReplaceAt(39, (uint8_t)((buffer->at(39) & 0x0F) | ((emb[1U] << 4) & 0xF0)));
|
|
}
|
|
}
|
|
|
|
void CDmrmmdvmProtocol::AppendDmrIdToBuffer(CBuffer *buffer, uint32_t id) const
|
|
{
|
|
buffer->Append((uint8_t)LOBYTE(HIWORD(id)));
|
|
buffer->Append((uint8_t)HIBYTE(LOWORD(id)));
|
|
buffer->Append((uint8_t)LOBYTE(LOWORD(id)));
|
|
}
|
|
|
|
void CDmrmmdvmProtocol::AppendDmrRptrIdToBuffer(CBuffer *buffer, uint32_t id) const
|
|
{
|
|
buffer->Append((uint8_t)HIBYTE(HIWORD(id)));
|
|
buffer->Append((uint8_t)LOBYTE(HIWORD(id)));
|
|
buffer->Append((uint8_t)HIBYTE(LOWORD(id)));
|
|
buffer->Append((uint8_t)LOBYTE(LOWORD(id)));
|
|
}
|