/*
 * $Id: imgsock_manager.c 54 2011-05-10 13:22:47Z kaori $
 *
 * Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2011, Professor Benoit Macq
 * Copyright (c) 2010-2011, Kaori Hagihara
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 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.
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "imgsock_manager.h"

msgtype_t identify_clientmsg( SOCKET connected_socket)
{
  int receive_size;
  char buf[BUF_LEN];
  char *magicid[] = { "JPIP-stream", "PNM request", "XML request", "TID request", "CID request", "CID destroy", "SIZ request", "JP2 save", "QUIT"};
  int i;
  
  receive_size = receive_line( connected_socket, buf);

  if( receive_size == 0){ 
    fprintf( stderr, "Error to receive the header of client message\n");
    return MSGERROR;
  }

  for( i=0; i<NUM_OF_MSGTYPES; i++){
    if( strncasecmp( magicid[i], buf, strlen(magicid[i])) == 0){
      fprintf( stderr, "%s\n", magicid[i]);
      return i;
    }
  }
  
  fprintf( stderr, "Cannot identify client message type %s\n", buf);
  return MSGERROR;
}

Byte_t * receive_JPIPstream( SOCKET connected_socket, char **target, char **tid, char **cid, int *streamlen)
{
  char buf[BUF_LEN], versionstring[] = "version 1.2";
  int linelen, datalen;
  Byte_t *jpipstream;
  
  *target = *cid = *tid = NULL;
  
  if((linelen = receive_line( connected_socket, buf)) == 0)
    return NULL;
  if( strncmp( versionstring, buf, strlen(versionstring))!=0){
    fprintf( stderr, "Wrong format\n");
    return NULL;
  }
  
  if((linelen = receive_line( connected_socket, buf)) == 0)
    return NULL;

  if( strstr( buf, "jp2")){ 
    // register cid option
    *target = strdup( buf);
    
    if((linelen = receive_line( connected_socket, buf)) == 0)
      return NULL;
    if( strcmp( buf, "0") != 0)
      *tid = strdup( buf);

    if((linelen = receive_line( connected_socket, buf)) == 0)
      return NULL;
    if( strcmp( buf, "0") != 0)
      *cid = strdup( buf);
    
    if((linelen = receive_line( connected_socket, buf)) == 0)
      return NULL;
  }

  datalen = atoi( buf);
  fprintf( stderr, "Receive Data: %d Bytes\n", datalen);

  jpipstream = receive_stream( connected_socket, datalen);

  // check EOR
  if( jpipstream[datalen-3] == 0x00 && ( jpipstream[datalen-2] == 0x01 || jpipstream[datalen-2] == 0x02))
    *streamlen = datalen -3;
  else
    *streamlen = datalen;
  
  return jpipstream;
}

void send_XMLstream( SOCKET connected_socket, Byte_t *xmlstream, int length)
{
  Byte_t header[5];
  
  header[0] = 'X';
  header[1] = 'M';
  header[2] = 'L';
  header[3] = (length >> 8) & 0xff;
  header[4] = length & 0xff;

  send_stream( connected_socket, header, 5);
  send_stream( connected_socket, xmlstream, length);
}

void send_IDstream(  SOCKET connected_socket, char *id, int idlen, char *label);

void send_CIDstream( SOCKET connected_socket, char *cid, int cidlen)
{
  send_IDstream( connected_socket, cid, cidlen, "CID");
}

void send_TIDstream( SOCKET connected_socket, char *tid, int tidlen)
{
  send_IDstream( connected_socket, tid, tidlen, "TID");
}

void send_IDstream(  SOCKET connected_socket, char *id, int idlen, char *label)
{
  Byte_t header[4];

  header[0] = label[0];
  header[1] = label[1];
  header[2] = label[2];
  header[3] = idlen & 0xff;

  send_stream( connected_socket, header, 4);
  send_stream( connected_socket, id, idlen);
}

void send_PNMstream( SOCKET connected_socket, Byte_t *pnmstream, unsigned int width, unsigned int height, unsigned int numofcomp, Byte_t maxval)
{ 
  int pnmlen = 0;
  Byte_t header[7];

  pnmlen = width*height*numofcomp;
  
  header[0] = 'P';
  header[1] = numofcomp==3 ? 6:5;
  header[2] = (width >> 8) & 0xff;
  header[3] = width & 0xff;
  header[4] = (height >> 8) & 0xff;
  header[5] = height & 0xff;
  header[6] = maxval;

  send_stream( connected_socket, header, 7);
  send_stream( connected_socket, pnmstream, pnmlen);
}

void send_SIZstream( SOCKET connected_socket, unsigned int width, unsigned int height)
{
  Byte_t responce[9];
  
  responce[0] = 'S';
  responce[1] = 'I';
  responce[2] = 'Z';
  responce[3] = (width >> 16) & 0xff;
  responce[4] = (width >> 8) & 0xff;
  responce[5] = width & 0xff;
  responce[6] = (height >> 16) & 0xff;
  responce[7] = (height >> 8) & 0xff;
  responce[8] = height & 0xff;

  send_stream( connected_socket, responce, 9);
}

void response_signal( SOCKET connected_socket, bool succeed)
{
  Byte_t code;

  if( succeed)
    code = 1;
  else
    code = 0;

  send_stream( connected_socket, &code, 1);
}