/*****************************************************************************************
 Copyright (c) 2002-2004 The UbixOS Project
 All rights reserved.

 Redistribution and use in source and binary forms, with or without modification, are
 permitted provided that the following conditions are met:

 Redistributions of source code must retain the above copyright notice, this list of
 conditions, the following disclaimer and the list of authors.  Redistributions in binary
 form must reproduce the above copyright notice, this list of conditions, the following
 disclaimer and the list of authors in the documentation and/or other materials provided
 with the distribution. Neither the name of the UbixOS Project nor the names of its
 contributors may be used to endorse or promote products derived from this software
 without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 $Id: systemtask.c 54 2016-01-11 01:29:55Z reddawg $

*****************************************************************************************/

#include <ubixos/systemtask.h>
#include <ubixos/kpanic.h>
#include <ubixos/exec.h>
#include <ubixos/tty.h>
#include <ubixos/sched.h>
#include <ubixos/vitals.h>
#include <lib/kmalloc.h>
#include <lib/kprintf.h>
#include <lib/bioscall.h>
#include <sde/sde.h>
#include <sys/io.h>
#include <vmm/vmm.h>
#include <mpi/mpi.h>
#include <string.h>

static unsigned char  *videoBuffer = (char *)0xB8000;


void systemTask() {
  mpi_message_t myMsg;
  uInt32       counter  = 0x0;
  int          i        = 0x0;
  int          *x       = 0x0;
  kTask_t      *tmpTask = 0x0;

  if (mpi_createMbox("system") != 0x0) {
    kpanic("Error: Error creating mailbox: system\n");
    }

  while(1) {
    if (mpi_fetchMessage("system",&myMsg) == 0x0) {
      kprintf("A");
      switch(myMsg.header) {
        case 0x69:
          x = (int *)&myMsg.data;
          kprintf("Switching to term: [%i][%i]\n",*x,myMsg.pid);
          schedFindTask(myMsg.pid)->term = tty_find(*x);
          break;
        case 1000:
          kprintf("Restarting the system in 5 seconds\n");
          counter = systemVitals->sysUptime + 5;
          while (systemVitals->sysUptime < counter) {
            sched_yield();
            }
          kprintf("Rebooting NOW!!!\n");
          while(inportByte(0x64) & 0x02);
          outportByte(0x64, 0xFE);
          break;
        case 31337:
           kprintf("system: backdoor opened\n");
           break;	
        case 0x80:
           if (!strcmp(myMsg.data,"sdeStart")) {
             kprintf("Starting SDE\n");
             //execThread(sdeThread,(uInt32)(kmalloc(0x2000)+0x2000),0x0);
             }
           else if (!strcmp(myMsg.data,"freePage")) {
            kprintf("kkk Free Pages");
             }
           else if (!strcmp(myMsg.data,"sdeStop")) {
             printOff = 0x0;
             biosCall(0x10,0x3,0x0,0x0,0x0,0x0,0x0,0x0,0x0);
             for (i=0x0;i<100;i++) asm("hlt");
             }
           break;
        default:
          kprintf("system: Received message %i:%s\n",myMsg.header,myMsg.data);
          break;
        }
      }

    /*
     Here we get the next task from the delete task queue 
     we first check to see if it has an fd attached for the binary and after that 
     we free the pages for the process and then free the task 
    */
    tmpTask = sched_getDelTask();    
    if (tmpTask != 0x0) {
      if (tmpTask->imageFd != 0x0)
        fclose(tmpTask->imageFd);
      vmmFreeProcessPages(tmpTask->id);
      kfree(tmpTask);
      }
    videoBuffer[0] = systemVitals->sysTicks;     
    sched_yield();
    }    
  
  return;
  }

/***
 END
 ***/