added remote-command <-V> (--serverversion) to print the server's version

ChangeLog

@@ -61,6 +61,7 @@ nzbget-0.3.1:
     if it was not possible;
   - Printed messages are now translated to oem-codepage to correctly print 
     filenames with non-english characters (windows only);
+  - Added remote-command "-V (--serverversion)" to print the server's version;
   - Added option "ThreadLimit" to prevent program from crash if it wants to 
     create too many threads (sometimes could occur in special cases);
   - Fixed error on parsing of nzb-files containing percent and other special 

MessageBase.h

@@ -56,7 +56,8 @@ enum eRemoteRequest
 	eRemoteRequestDumpDebug,
 	eRemoteRequestEditQueue,
 	eRemoteRequestLog,
-	eRemoteRequestShutdown
+	eRemoteRequestShutdown,
+	eRemoteRequestVersion
 };
 
 // Possible values for field "m_iAction" of struct "SNZBEditQueueRequest":
@@ -279,6 +280,21 @@ struct SNZBShutdownResponse
 	//char					m_szText[m_iTrailingDataLength];	// variable sized
 };
 
+// Server version request
+struct SNZBVersionRequest
+{
+	SNZBRequestBase			m_MessageBase;			// Must be the first in the struct
+};
+
+// Server version  response
+struct SNZBVersionResponse
+{
+	SNZBResponseBase		m_MessageBase;			// Must be the first in the struct
+	int32_t					m_bSuccess;				// 0 - command failed, 1 - command executed successfully
+	int32_t					m_iTrailingDataLength;	// Length of Text-string (m_szText), following to this record
+	//char					m_szText[m_iTrailingDataLength];	// variable sized
+};
+
 #ifdef HAVE_PRAGMA_PACK
 #pragma pack()
 #endif

Options.cpp

@@ -64,6 +64,7 @@ static struct option long_options[] =
 	    {"server", no_argument, 0, 's' },
 	    {"daemon", no_argument, 0, 'D' },
 	    {"version", no_argument, 0, 'v'},
+	    {"serverversion", no_argument, 0, 'V'},
 	    {"option", required_argument, 0, 'o'},
 	    {"append", no_argument, 0, 'A'},
 	    {"list", no_argument, 0, 'L'},
@@ -76,14 +77,11 @@ static struct option long_options[] =
 	    {"edit", required_argument, 0, 'E'},
 	    {"connect", no_argument, 0, 'C'},
 	    {"quit", no_argument, 0, 'Q'},
-#ifdef DEBUG				
-	    {"test", no_argument, 0, 't'},
-#endif		
 	    {0, 0, 0, 0}
     };
 #endif
 
-static char short_options[] = "c:hno:psvABDCG:LPUR:TE:Q";
+static char short_options[] = "c:hno:psvABDCG:LPUR:TE:QV";
 
 // Program options
 static const char* OPTION_DESTDIR			= "DestDir";
@@ -719,6 +717,9 @@ void Options::InitCommandLine(int argc, char* argv[])
 			case 'Q':
 				m_eClientOperation = opClientRequestShutdown;
 				break;
+			case 'V':
+				m_eClientOperation = opClientRequestVersion;
+				break;
 			case '?':
 				exit(-1);
 				break;
@@ -744,6 +745,7 @@ void Options::PrintUsage(char* com)
 #ifndef WIN32
 		"  -D, --daemon              Start nzbget as a server in daemon-mode\n"
 #endif
+	    "  -V, --serverversion       Print server's version and exit\n"
 		"  -Q, --quit                Shutdown the server\n"
 		"  -A, --append              Send file to the server's download queue\n"
 		"  -C, --connect             Attach client to server\n"

Options.h

@@ -43,7 +43,8 @@ public:
 	    opClientRequestDumpDebug,
 	    opClientRequestEditQueue,
 	    opClientRequestLog,
-	    opClientRequestShutdown
+	    opClientRequestShutdown,
+	    opClientRequestVersion
 	};
 	enum EMessageTarget
 	{

RemoteClient.cpp

@@ -559,3 +559,24 @@ bool RemoteClient::RequestServerShutdown()
 	m_pConnection->Disconnect();
 	return OK;
 }
+
+bool RemoteClient::RequestServerVersion()
+{
+	if (!InitConnection()) return false;
+
+	SNZBVersionRequest VersionRequest;
+	InitMessageBase(&VersionRequest.m_MessageBase, eRemoteRequestVersion, sizeof(VersionRequest));
+
+	bool OK = m_pConnection->Send((char*)(&VersionRequest), sizeof(VersionRequest)) >= 0;
+	if (OK)
+	{
+		OK = ReceiveBoolResponse();
+	}
+	else
+	{
+		perror("m_pConnection->Send");
+	}
+
+	m_pConnection->Disconnect();
+	return OK;
+}

RemoteClient.h

@@ -56,6 +56,7 @@ public:
 	bool 			RequestServerEditQueue(int iAction, int iOffset, int* pIDList, int iIDCount, bool bSmartOrder);
 	bool			RequestServerLog(int iLines);
 	bool			RequestServerShutdown();
+	bool			RequestServerVersion();
 };
 
 #endif

RemoteServer.cpp

@@ -278,6 +278,12 @@ void RequestProcessor::Dispatch()
 				break;
 			}
 
+		case eRemoteRequestVersion:
+			{
+				command = new VersionCommand();
+				break;
+			}
+
 		default:
 			error("Received unsupported request %i", ntohl(m_MessageBase.m_iType));
 			break;
@@ -375,6 +381,17 @@ void ShutdownCommand::Execute()
 	ExitProc();
 }
 
+void VersionCommand::Execute()
+{
+	SNZBVersionRequest VersionRequest;
+	if (!ReceiveRequest(&VersionRequest, sizeof(VersionRequest)))
+	{
+		return;
+	}
+
+	SendBoolResponse(true, VERSION);
+}
+
 void DownloadCommand::Execute()
 {
 	SNZBDownloadRequest DownloadRequest;

RemoteServer.h

@@ -124,4 +124,10 @@ public:
 	virtual void		Execute();
 };
 
+class VersionCommand: public MessageCommand
+{
+public:
+	virtual void		Execute();
+};
+
 #endif

nzbget.cpp

@@ -321,6 +321,10 @@ void ProcessClientRequest()
 	{
 		Client->RequestServerDownload(g_pOptions->GetArgFilename(), g_pOptions->GetAddTop());
 	}
+	else if (g_pOptions->GetClientOperation() == Options::opClientRequestVersion)
+	{
+		Client->RequestServerVersion();
+	}
 
 	delete Client;
 }