server: implement rcon redirection, add redirect command from old engine

engine/common/common.h

@@ -327,9 +327,10 @@ typedef struct host_redirect_s
 {
 	rdtype_t target;
 	char     *buffer;
-	int		buffersize;
+	size_t   buffersize;
 	netadr_t address;
 	void     (*flush)( netadr_t adr, rdtype_t target, char *buffer );
+	int      lines;
 } host_redirect_t;
 
 typedef struct
@@ -947,6 +948,7 @@ void VID_Init( void );
 void UI_SetActiveMenu( qboolean fActive );
 void UI_ShowConnectionWarning( void );
 void Cmd_Null_f( void );
+void Rcon_Print( const char *pMsg );
 
 // soundlib shared exports
 qboolean S_Init( void );

engine/common/system.c

@@ -553,5 +553,5 @@ void Sys_Print( const char *pMsg )
 
 	Sys_PrintLog( pMsg );
 
-	// Rcon_Print( pMsg );
+	Rcon_Print( pMsg );
 }

engine/server/sv_client.c

@@ -608,7 +608,7 @@ SVC COMMAND REDIRECT
 
 ==============================================================================
 */
-void SV_BeginRedirect( netadr_t adr, int target, char *buffer, int buffersize, void (*flush))
+void SV_BeginRedirect( netadr_t adr, rdtype_t target, char *buffer, size_t buffersize, void (*flush))
 {
 	if( !target || !buffer || !buffersize || !flush )
 		return;
@@ -619,6 +619,8 @@ void SV_BeginRedirect( netadr_t adr, int target, char *buffer, int buffersize, v
 	host.rd.flush = flush;
 	host.rd.address = adr;
 	host.rd.buffer[0] = 0;
+	if( host.rd.lines == 0 )
+		host.rd.lines = -1;
 }
 
 void SV_FlushRedirect( netadr_t adr, int dest, char *buf )
@@ -644,6 +646,9 @@ void SV_FlushRedirect( netadr_t adr, int dest, char *buf )
 
 void SV_EndRedirect( void )
 {
+	if( host.rd.lines > 0 )
+		return;
+
 	if( host.rd.flush )
 		host.rd.flush( host.rd.address, host.rd.target, host.rd.buffer );
 
@@ -653,6 +658,34 @@ void SV_EndRedirect( void )
 	host.rd.flush = NULL;
 }
 
+/*
+================
+Rcon_Print
+
+Print message to rcon buffer and send to rcon redirect target
+================
+*/
+void Rcon_Print( const char *pMsg )
+{
+	if( host.rd.target && host.rd.lines && host.rd.flush && host.rd.buffer )
+	{
+		size_t len = Q_strncat( host.rd.buffer, pMsg, host.rd.buffersize );
+
+		if( len && host.rd.buffer[len-1] == '\n' )
+		{
+			host.rd.flush( host.rd.address, host.rd.target, host.rd.buffer );
+
+			if( host.rd.lines > 0 )
+				host.rd.lines--;
+
+			host.rd.buffer[0] = 0;
+
+			if( !host.rd.lines )
+				Msg( "End of redirection!\n" );
+		}
+	}
+}
+
 /*
 ===============
 SV_GetClientIDString

engine/server/sv_cmds.c

@@ -931,6 +931,30 @@ void SV_EntityInfo_f( void )
 	}
 }
 
+/*
+================
+Rcon_Redirect_f
+
+Force redirect N lines of console output to client
+================
+*/
+void Rcon_Redirect_f( void )
+{
+	int lines = 2000;
+
+	if( !host.rd.target )
+	{
+		Msg( "redirect is only valid from rcon\n" );
+		return;
+	}
+
+	if( Cmd_Argc() == 2 )
+		lines = Q_atoi( Cmd_Argv( 1 ) );
+
+	host.rd.lines = lines;
+	Msg( "Redirection enabled for next %d lines\n", lines );
+}
+
 /*
 ==================
 SV_InitHostCommands
@@ -978,6 +1002,7 @@ void SV_InitOperatorCommands( void )
 	Cmd_AddCommand( "shutdownserver", SV_KillServer_f, "shutdown current server" );
 	Cmd_AddCommand( "changelevel", SV_ChangeLevel_f, "change level" );
 	Cmd_AddCommand( "changelevel2", SV_ChangeLevel2_f, "smooth change level" );
+	Cmd_AddCommand( "redirect", Rcon_Redirect_f, "force enable rcon redirection" );
 
 	if( host.type == HOST_NORMAL )
 	{