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on request show the names of the connected clients in the server list

This commit is contained in:
Volker Fischer 2015-12-06 17:51:06 +00:00
parent 89c22f685b
commit 5d693d8ea4
5 changed files with 241 additions and 0 deletions
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3
ChangeLog
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@ -3,6 +3,9 @@
3.3.12
TODO:
- on request show the names of the connected clients in the server list
3.3.11

214
src/protocol.cpp
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@ -281,6 +281,26 @@ CONNECTION LESS MESSAGES
note: does not have any data -> n = 0
- PROTMESSID_CLM_CONN_CLIENTS_LIST: Information about connected clients
for each connected client append the PROTMESSID_CONN_CLIENTS_LIST:
+--------------------+------------------------------+ ...
| 4 bytes request ID | PROTMESSID_CONN_CLIENTS_LIST | ...
+--------------------+------------------------------+ ...
+------------------------------+ ...
| PROTMESSID_CONN_CLIENTS_LIST | ...
+------------------------------+ ...
- PROTMESSID_CLM_REQ_CONN_CLIENTS_LIST: Request the connected clients list
+--------------------+
| 4 bytes request ID |
+--------------------+
******************************************************************************
*
* This program is free software; you can redistribute it and/or modify it under
@ -647,6 +667,14 @@ if ( rand() < ( RAND_MAX / 2 ) ) return false;
case PROTMESSID_CLM_REQ_VERSION_AND_OS:
bRet = EvaluateCLReqVersionAndOSMes ( InetAddr );
break;
case PROTMESSID_CLM_CONN_CLIENTS_LIST:
bRet = EvaluateCLConnClientsListMes ( InetAddr, vecbyMesBodyData );
break;
case PROTMESSID_CLM_REQ_CONN_CLIENTS_LIST:
bRet = EvaluateCLReqConnClientsListMes ( InetAddr, vecbyMesBodyData );
break;
}
}
else
@ -1939,6 +1967,192 @@ bool CProtocol::EvaluateCLReqVersionAndOSMes ( const CHostAddress& InetAddr )
return false; // no error
}
void CProtocol::CreateCLConnClientsListMes ( const CHostAddress& InetAddr,
const int iRequestID,
const CVector<CChannelInfo>& vecChanInfo )
{
const int iNumClients = vecChanInfo.Size();
// build data vector
CVector<uint8_t> vecData ( 4 ); // 4 bytes of data for request ID
int iPos = 0; // init position pointer
// request ID (4 bytes)
PutValOnStream ( vecData, iPos, static_cast<uint32_t> ( iRequestID ), 4 );
for ( int i = 0; i < iNumClients; i++ )
{
// convert strings to utf-8
const QByteArray strUTF8Name = vecChanInfo[i].strName.toUtf8();
const QByteArray strUTF8City = vecChanInfo[i].strCity.toUtf8();
// size of current list entry
const int iCurListEntrLen =
1 /* chan ID */ + 2 /* country */ +
4 /* instrument */ + 1 /* skill level */ +
4 /* IP address */ +
2 /* utf-8 str. size */ + strUTF8Name.size() +
2 /* utf-8 str. size */ + strUTF8City.size();
// make space for new data
vecData.Enlarge ( iCurListEntrLen );
// channel ID (1 byte)
PutValOnStream ( vecData, iPos,
static_cast<uint32_t> ( vecChanInfo[i].iChanID ), 1 );
// country (2 bytes)
PutValOnStream ( vecData, iPos,
static_cast<uint32_t> ( vecChanInfo[i].eCountry ), 2 );
// instrument (4 bytes)
PutValOnStream ( vecData, iPos,
static_cast<uint32_t> ( vecChanInfo[i].iInstrument ), 4 );
// skill level (1 byte)
PutValOnStream ( vecData, iPos,
static_cast<uint32_t> ( vecChanInfo[i].eSkillLevel ), 1 );
// IP address (4 bytes)
PutValOnStream ( vecData, iPos,
static_cast<uint32_t> ( vecChanInfo[i].iIpAddr ), 4 );
// name
PutStringUTF8OnStream ( vecData, iPos, strUTF8Name );
// city
PutStringUTF8OnStream ( vecData, iPos, strUTF8City );
}
CreateAndImmSendConLessMessage ( PROTMESSID_CLM_CONN_CLIENTS_LIST,
vecData,
InetAddr );
}
bool CProtocol::EvaluateCLConnClientsListMes ( const CHostAddress& InetAddr,
const CVector<uint8_t>& vecData )
{
int iPos = 0; // init position pointer
const int iDataLen = vecData.Size();
CVector<CChannelInfo> vecChanInfo ( 0 );
// check size (the first 4 bytes)
if ( iDataLen < 4 )
{
return true; // return error code
}
// request ID (4 bytes)
const int iRequestID =
static_cast<int> ( GetValFromStream ( vecData, iPos, 4 ) );
while ( iPos < iDataLen )
{
// check size (the next 12 bytes)
if ( ( iDataLen - iPos ) < 12 )
{
return true; // return error code
}
// channel ID (1 byte)
const int iChanID =
static_cast<int> ( GetValFromStream ( vecData, iPos, 1 ) );
// country (2 bytes)
const QLocale::Country eCountry =
static_cast<QLocale::Country> ( GetValFromStream ( vecData, iPos, 2 ) );
// instrument (4 bytes)
const int iInstrument =
static_cast<int> ( GetValFromStream ( vecData, iPos, 4 ) );
// skill level (1 byte)
const ESkillLevel eSkillLevel =
static_cast<ESkillLevel> ( GetValFromStream ( vecData, iPos, 1 ) );
// IP address (4 bytes)
const int iIpAddr =
static_cast<int> ( GetValFromStream ( vecData, iPos, 4 ) );
// name
QString strCurName;
if ( GetStringFromStream ( vecData,
iPos,
MAX_LEN_FADER_TAG,
strCurName ) )
{
return true; // return error code
}
// city
QString strCurCity;
if ( GetStringFromStream ( vecData,
iPos,
MAX_LEN_SERVER_CITY,
strCurCity ) )
{
return true; // return error code
}
// add channel information to vector
vecChanInfo.Add ( CChannelInfo ( iChanID,
iIpAddr,
strCurName,
eCountry,
strCurCity,
iInstrument,
eSkillLevel ) );
}
// check size: all data is read, the position must now be at the end
if ( iPos != iDataLen )
{
return true; // return error code
}
// invoke message action
emit CLConnClientsListMesReceived ( InetAddr, iRequestID, vecChanInfo );
return false; // no error
}
void CProtocol::CreateCLReqConnClientsListMes ( const CHostAddress& InetAddr,
const int iRequestID )
{
int iPos = 0; // init position pointer
// build data vector (4 bytes long)
CVector<uint8_t> vecData ( 4 );
// request ID (4 bytes)
PutValOnStream ( vecData, iPos, static_cast<uint32_t> ( iRequestID ), 4 );
CreateAndImmSendConLessMessage ( PROTMESSID_CLM_REQ_CONN_CLIENTS_LIST,
vecData,
InetAddr );
}
bool CProtocol::EvaluateCLReqConnClientsListMes ( const CHostAddress& InetAddr,
const CVector<uint8_t>& vecData )
{
int iPos = 0; // init position pointer
// check size
if ( vecData.Size() != 4 )
{
return true; // return error code
}
// request ID (4 bytes)
const int iRequestID =
static_cast<int> ( GetValFromStream ( vecData, iPos, 4 ) );
// invoke message action
emit CLReqConnClientsList ( InetAddr, iRequestID );
return false; // no error
}
/******************************************************************************\
* Message generation and parsing *

16
src/protocol.h
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@ -70,6 +70,8 @@
#define PROTMESSID_CLM_DISCONNECTION 1010 // disconnection
#define PROTMESSID_CLM_VERSION_AND_OS 1011 // version number and operating system
#define PROTMESSID_CLM_REQ_VERSION_AND_OS 1012 // request version number and operating system
#define PROTMESSID_CLM_CONN_CLIENTS_LIST 1013 // channel infos for connected clients
#define PROTMESSID_CLM_REQ_CONN_CLIENTS_LIST 1014 // request the connected clients list
// lengths of message as defined in protocol.cpp file
#define MESS_HEADER_LENGTH_BYTE 7 // TAG (2), ID (2), cnt (1), length (2)
@ -121,6 +123,11 @@ public:
void CreateCLDisconnection ( const CHostAddress& InetAddr );
void CreateCLVersionAndOSMes ( const CHostAddress& InetAddr );
void CreateCLReqVersionAndOSMes ( const CHostAddress& InetAddr );
void CreateCLConnClientsListMes ( const CHostAddress& InetAddr,
const int iRequestID,
const CVector<CChannelInfo>& vecChanInfo );
void CreateCLReqConnClientsListMes ( const CHostAddress& InetAddr,
const int iRequestID );
static bool ParseMessageFrame ( const CVector<uint8_t>& vecbyData,
const int iNumBytesIn,
@ -236,6 +243,10 @@ protected:
bool EvaluateCLVersionAndOSMes ( const CHostAddress& InetAddr,
const CVector<uint8_t>& vecData );
bool EvaluateCLReqVersionAndOSMes ( const CHostAddress& InetAddr );
bool EvaluateCLConnClientsListMes ( const CHostAddress& InetAddr,
const CVector<uint8_t>& vecData );
bool EvaluateCLReqConnClientsListMes ( const CHostAddress& InetAddr,
const CVector<uint8_t>& vecData );
int iOldRecID;
int iOldRecCnt;
@ -291,6 +302,11 @@ signals:
COSUtil::EOpSystemType eOSType,
QString strVersion );
void CLReqVersionAndOS ( CHostAddress InetAddr );
void CLConnClientsListMesReceived ( CHostAddress InetAddr,
int iRequestID,
CVector<CChannelInfo> vecChanInfo );
void CLReqConnClientsList ( CHostAddress InetAddr,
int iRequestID );
};
#endif /* !defined ( PROTOCOL_H__3B123453_4344_BB2392354455IUHF1912__INCLUDED_ ) */

4
src/server.cpp
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@ -434,6 +434,10 @@ CServer::CServer ( const int iNewMaxNumChan,
SIGNAL ( CLReqVersionAndOS ( CHostAddress ) ),
this, SLOT ( OnCLReqVersionAndOS ( CHostAddress ) ) );
QObject::connect ( &ConnLessProtocol,
SIGNAL ( CLReqConnClientsList ( CHostAddress, int ) ),
this, SLOT ( OnCLReqConnClientsList ( CHostAddress, int ) ) );
// CODE TAG: MAX_NUM_CHANNELS_TAG
// make sure we have MAX_NUM_CHANNELS connections!!!
// send message

4
src/server.h
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@ -332,6 +332,10 @@ public slots:
void OnCLReqVersionAndOS ( CHostAddress InetAddr )
{ ConnLessProtocol.CreateCLVersionAndOSMes ( InetAddr ); }
void OnCLReqConnClientsList ( CHostAddress InetAddr,
int iRequestID )
{ ConnLessProtocol.CreateCLConnClientsListMes ( InetAddr, iRequestID, CreateChannelList() ); }
void OnCLRegisterServerReceived ( CHostAddress InetAddr,
CServerCoreInfo ServerInfo )
{