//**************************************************************************
//*                     This file is part of the                           *
//*                      Mpxplay - audio player.                           *
//*                  The source code of Mpxplay is                         *
//*        (C) copyright 1998-2011 by PDSoft (Attila Padar)                *
//*                http://mpxplay.sourceforge.net                          *
//*                  email: mpxplay@freemail.hu                            *
//**************************************************************************
//*  This program is distributed in the hope that it will be useful,       *
//*  but WITHOUT ANY WARRANTY; without even the implied warranty of        *
//*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.                  *
//*  Please contact with the author (with me) if you want to use           *
//*  or modify this source.                                                *
//**************************************************************************
//function: ftp drive handling (ftp client)

#include "mpxplay.h"
#include "diskdriv.h"

#ifdef MPXPLAY_UTF8
#define DRVFTP_FTPDRIVE_FLAG_DEFAULT_CONFIG (DRVFTP_FTPDRIVE_FLAG_PASSIVE_MODE|DRVFTP_FTPDRIVE_FLAG_AUTO_RECONNECT|DRVFTP_FTPDRIVE_FLAG_USE_ANONYM_LOGIN|DRVFTP_FTPDRIVE_FLAG_USE_UTF8)
#else
#define DRVFTP_FTPDRIVE_FLAG_DEFAULT_CONFIG (DRVFTP_FTPDRIVE_FLAG_PASSIVE_MODE|DRVFTP_FTPDRIVE_FLAG_AUTO_RECONNECT|DRVFTP_FTPDRIVE_FLAG_USE_ANONYM_LOGIN)
#endif

unsigned long mpxplay_diskdrive_drvftp_config=DRVFTP_FTPDRIVE_FLAG_DEFAULT_CONFIG;

#ifdef MPXPLAY_LINK_TCPIP

#include "tcpcomon.h"
#include "display\display.h"
#include "control\cntfuncs.h" // for mpxplay_control_keyboard_get_topfunc()
#include <malloc.h>

#ifdef MPXPLAY_DRVFTP_DEBUGFILE
extern FILE *debug_fp;
#endif

// ftpi->system_type
//#define DRVFTP_FTPDRIVEINFO_SYSTYPE_UNIX  1
//#define DRVFTP_FTPDRIVEINFO_SYSTYPE_WINNT 2

// ftpi->file_open_id_num (unlock/lock)
#define DRVFTP_FILEOPENID_FREE 0
#define DRVFTP_FILEOPENID_BUSY -1000

// ftpi->lastdatatype
#define DRVFTP_DATATYPE_ASCII  1
#define DRVFTP_DATATYPE_BINARY 2

// ftpi->server_features
#define DRVFTP_FEATURE_REST      1
#define DRVFTP_FEATURE_SIZE      2
#define DRVFTP_FEATURE_MLSD      4
#define DRVFTP_FEATURE_AUTH_SSL  8
#define DRVFTP_FEATURE_AUTH_TLS 16
#define DRVFTP_FEATURE_UTF8     32
#define DRVFTP_FEATURE_CLNT     64

#define DRVFTP_RESPCODE_OPENING_DATACONN   150
#define DRVFTP_RESPCODE_COMMAND_OK         200
#define DRVFTP_RESPCODE_CMD_SIZE_OK        213
#define DRVFTP_RESPCODE_ABOR_SUCCESS       226
#define DRVFTP_RESPCODE_TRANSFER_COMPLETE  226
#define DRVFTP_RESPCODE_ENTERING_PASSIVE   227
#define DRVFTP_RESPCODE_DIRCOMMAND_OK      250
#define DRVFTP_RESPCODE_CMD_PWD_OK         257
#define DRVFTP_RESPCODE_CMD_REST_OK        350
#define DRVFTP_RESPCODE_ERRORCODES         400 // ???
#define DRVFTP_RESPCODE_DATACONN_FAILED    425
#define DRVFTP_RESPCODE_TRANSFER_ABORTED   426
#define DRVFTP_RESPCODE_TRANSFER_RESETED   450
#define DRVFTP_RESPCODE_FILE_EXIST_ALREADY 550
#define DRVFTP_RESPCODE_FILE_NOT_FOUND     550 // or permission denied

extern ftpdrive_lowlevel_func_s FTPDRV_lowlevel_funcs;
#ifdef MPXPLAY_WIN32
extern ftpdrive_lowlevel_func_s FTPSDRV_lowlevel_funcs;
extern ftpdrive_lowlevel_func_s FTPESDRV_lowlevel_funcs;
#endif

static ftpdrive_lowlevel_func_s *ALL_lowlevel_funcs[]={
 &FTPDRV_lowlevel_funcs,  // 0.
#ifdef MPXPLAY_WIN32
 &FTPSDRV_lowlevel_funcs, // 1.
 &FTPESDRV_lowlevel_funcs,// 2.
#endif
 NULL
};

typedef struct ftpdrive_feattable_s{
 char *featname;
 unsigned int featflag;
}ftpdrive_feattable_s;

static ftpdrive_feattable_s ftpdrive_feature_table[]={
 {"REST",    DRVFTP_FEATURE_REST},
 {"SIZE",    DRVFTP_FEATURE_SIZE},
 {"MLSD",    DRVFTP_FEATURE_MLSD},
 {"AUTH SSL",DRVFTP_FEATURE_AUTH_SSL},
 {"AUTH TLS",DRVFTP_FEATURE_AUTH_TLS},
 {"UTF8",    DRVFTP_FEATURE_UTF8},
 {"CLNT",    DRVFTP_FEATURE_CLNT},
 {"",0}
};

static long drvftp_connectid_num;
static struct ftpdrive_info_s *ftpdrives_info_ptrs[DRVFTP_MAX_SESSIONS];

static unsigned int ftpdrive_session_connect(struct ftpdrive_info_s *ftpi);
static void ftpdrive_drive_unmount(void *drivehand_data);
static unsigned int ftpdrive_checkdir(void *drivehand_data,char *dirname);
static unsigned int drvftp_getcurrdir_real(struct ftpdrive_info_s *ftpi,unsigned int from_sc);
static int ftpdrive_chdir(void *drivehand_data,char *path);
static void drvftp_str_localname_to_remote(char *remotename,char *pathname);
static int drvftp_cwd(struct ftpdrive_info_s *ftpi,char *remotename);

//----------------------------------------------------------------------
unsigned int diskdriv_drvftp_cmdctrl_sendcommand(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *command)
{
 unsigned int bytes;
 char cmd[MAX_PATHNAMELEN+32];
 snprintf(cmd,sizeof(cmd),"%s\r\n",command);
 bytes=ftpi->lowfunc->send(socketinfo_session,cmd,pds_strlen(cmd));
 if(!bytes && funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_AUTO_RECONNECT))
  funcbit_smp_enable(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_RECONNECT);
#ifdef MPXPLAY_DRVFTP_DEBUGFILE
 if(debug_fp)
  fprintf(debug_fp,"%s\n",command);
#endif
 return bytes;
}

// block based reading
unsigned int diskdriv_drvftp_cmdctrl_read_respline(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *response,unsigned int respbufsize,unsigned int respcontrol)
{
 long bytes,len,retcode=0,mesbufmaxsize=sizeof(ftpi->message_buffer)-4;
 unsigned int loc_rescontrol=respcontrol;
 char *e;
 mpxp_uint64_t endtime=pds_gettimem();
 struct fptdrive_timeoutmsg_s tos;

 if(funcbit_test(respcontrol,DRVFTP_RESPCNTR_SHORTWAIT))
  endtime+=DRVFTP_DEFAULT_TIMEOUTMS_SHORTWAIT;
 else if(funcbit_test(respcontrol,DRVFTP_RESPCNTR_LONGWAIT))
  endtime+=DRVFTP_DEFAULT_TIMEOUTMS_LONGWAIT;
 else
  endtime+=DRVFTP_DEFAULT_TIMEOUTMS_RESPONSE;

 drvftp_message_timeout_init(&tos,endtime,"FTP: waiting for server %d sec ...");

 *response=0;

 do{
  if(ftpi->message_bufbytes){
   e=pds_strchr(ftpi->message_buffer,'\n');
   if(e){
    *e++=0;
    len=e-(&ftpi->message_buffer[0]);
    if(len<respbufsize){
     bytes=pds_strcpy(response,ftpi->message_buffer);
     if(response[bytes-1]=='\r'){
      bytes--;
      response[bytes]=0;
     }
     retcode=1;
#ifdef MPXPLAY_DRVFTP_DEBUGFILE
     if(debug_fp)
      fprintf(debug_fp,"%s\n",response);
#endif
    }
    funcbit_smp_value_put(ftpi->message_bufbytes,pds_strcpy(ftpi->message_buffer,e));
    break;
   }else if(ftpi->message_bufbytes>=mesbufmaxsize){ // message buffer is full (and eol not found)
    /*if(funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_HTTP)){
     retcode=1;
     bytes=ftpi->message_bufbytes; // !!! possible no breakline in html code
     break;
    }*/
    funcbit_smp_value_put(ftpi->message_bufbytes,0);
   }
  }
  bytes=ftpi->lowfunc->bytes_buffered(socketinfo_session);
  if(bytes<0)
   break;
  if((bytes==0) && (ftpi->lowfunc->socket_select(socketinfo_session,DRVFTP_SOCKSELECT_MODE_READ)!=0) && (ftpi->lowfunc->bytes_buffered(socketinfo_session)<=0)) // required!
   break;
  if(bytes){
   bytes=min(bytes,(mesbufmaxsize-ftpi->message_bufbytes));
   if(bytes){ // message_buffer is not full
    long gotbytes=ftpi->lowfunc->receive(socketinfo_session,&ftpi->message_buffer[ftpi->message_bufbytes],bytes);
    if(gotbytes!=bytes) // should not happen
     bytes=min(gotbytes,(mesbufmaxsize-ftpi->message_bufbytes));
    funcbit_smp_value_put(ftpi->message_bufbytes,(ftpi->message_bufbytes+bytes));
    funcbit_smp_value_put(ftpi->message_buffer[ftpi->message_bufbytes],0);
   }
  }else
   drvftp_message_timeout_write(&tos);

  if(loc_rescontrol&DRVFTP_RESPCNTR_INSTANT){ // read only buffered/started responses (don't wait for new ones)
   if(!ftpi->message_bufbytes)
    break;
   funcbit_disable(loc_rescontrol,DRVFTP_RESPCNTR_INSTANT);
  }
  if((pds_look_extgetch()==KEY_ESC) && (pds_gettimem()>tos.begintime_disp))
   break;
 }while(pds_gettimem()<=endtime);

 if(!retcode){
  bytes=0;
  if(!funcbit_test(respcontrol,DRVFTP_RESPCNTR_INSTANT) && funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_AUTO_RECONNECT) && (pds_look_extgetch()!=KEY_ESC))
   funcbit_smp_enable(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_RECONNECT);
  if((pds_look_extgetch()==KEY_ESC) && (pds_gettimem()>tos.begintime_disp) && !mpxplay_control_keyboard_get_topfunc()) // !!! bullshit
   pds_extgetch();
 }

 drvftp_message_timeout_close(&tos);

 return retcode;
}

unsigned int diskdriv_drvftp_cmdctrl_read_response(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *response,unsigned int respbufsize,unsigned int respcontrol)
{
 long retcode=0;
 do{
  if(!diskdriv_drvftp_cmdctrl_read_respline(ftpi,socketinfo_session,response,respbufsize,respcontrol))
   break;
  retcode=pds_atol(response);
 }while(!(respcontrol&DRVFTP_RESPCNTR_NORETCODECHK) && ((retcode<100) || (retcode>999)));
 if(retcode<100)
  retcode=0;
 else{
  funcbit_smp_value_put(ftpi->lastrespcode,retcode);
  pds_strncpy(ftpi->lastresptext,response+4,sizeof(ftpi->lastresptext)-1);
  ftpi->lastresptext[sizeof(ftpi->lastresptext)-1]=0;
 }
 return retcode;
}

static unsigned int drvftp_cmdctrl_read_respcode(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,unsigned int respcontrol)
{
 char response[MAX_PATHNAMELEN+32];
 return diskdriv_drvftp_cmdctrl_read_response(ftpi,socketinfo_session,response,sizeof(response),respcontrol);
}

static unsigned int drvftp_cmdctrl_check_respcode(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,unsigned int respcontrol,unsigned int expected_respcode)
{
 do{
  unsigned int respcode=drvftp_cmdctrl_read_respcode(ftpi,socketinfo_session,respcontrol);
  if(!respcode)
   break;
  if(respcode==expected_respcode)
   return 1;
  if(respcode>=DRVFTP_RESPCODE_ERRORCODES)
   break;
 }while(1);
 return 0;
}

static unsigned int drvftp_cmdctrl_check_listof_respcodes(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,unsigned int respcontrol,unsigned int *expected_respcodes)
{
 if(!expected_respcodes || !expected_respcodes[0])
  return 0;
 do{
  unsigned int *i,respcode=drvftp_cmdctrl_read_respcode(ftpi,socketinfo_session,respcontrol);
#ifdef MPXPLAY_DRVFTP_DEBUGFILE
//  if(debug_fp)
//   fprintf(debug_fp,"list_of_respcodes: %d 0:%d 1:%d 2:%d\n",respcode,expected_respcodes[0],expected_respcodes[1],expected_respcodes[2]);
#endif
  if(!respcode)
   break;
  i=expected_respcodes;
  do{
   if(respcode==*i)
    return 1;
   i++;
  }while(*i);
  if(respcode>=DRVFTP_RESPCODE_ERRORCODES)
   break;
 }while(1);
 return 0;
}

static void drvftp_cmdctrl_flush_responses(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session)
{
 char tmp[MAX_PATHNAMELEN+32];
 while(diskdriv_drvftp_cmdctrl_read_response(ftpi,socketinfo_session,tmp,sizeof(tmp),(DRVFTP_RESPCNTR_INSTANT|DRVFTP_RESPCNTR_NORETCODECHK))){}
 funcbit_smp_value_put(ftpi->message_bufbytes,0);
}

unsigned int drvftp_cmdctrl_send_command_check_respcode(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *command,unsigned int expected_respcode)
{
 drvftp_cmdctrl_flush_responses(ftpi,socketinfo_session);
 if(!diskdriv_drvftp_cmdctrl_sendcommand(ftpi,socketinfo_session,command))
  return 0;
 return drvftp_cmdctrl_check_respcode(ftpi,socketinfo_session,DRVFTP_RESPCNTR_NONE,expected_respcode);
}

static unsigned int drvftp_cmdctrl_send_command_respcntr_check_respcode(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *command,unsigned int respcontrol,unsigned int expected_respcode)
{
 drvftp_cmdctrl_flush_responses(ftpi,socketinfo_session);
 if(!diskdriv_drvftp_cmdctrl_sendcommand(ftpi,socketinfo_session,command))
  return 0;
 return drvftp_cmdctrl_check_respcode(ftpi,socketinfo_session,respcontrol,expected_respcode);
}

static unsigned int drvftp_cmdctrl_send_command_respcntr_check_listof_respcodes(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *command,unsigned int respcontrol,unsigned int *expected_respcodes)
{
 drvftp_cmdctrl_flush_responses(ftpi,socketinfo_session);
 if(!diskdriv_drvftp_cmdctrl_sendcommand(ftpi,socketinfo_session,command))
  return 0;
 return drvftp_cmdctrl_check_listof_respcodes(ftpi,socketinfo_session,respcontrol,expected_respcodes);
}

static unsigned int drvftp_cmdctrl_send_command_get_success(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *command)
{
 unsigned int respcode;
 drvftp_cmdctrl_flush_responses(ftpi,socketinfo_session);
 if(!diskdriv_drvftp_cmdctrl_sendcommand(ftpi,socketinfo_session,command))
  return 0;
 respcode=drvftp_cmdctrl_read_respcode(ftpi,socketinfo_session,DRVFTP_RESPCNTR_NONE);
 if((respcode>=100) && (respcode<DRVFTP_RESPCODE_ERRORCODES))
  return 1;
 return 0;
}

//splits response to a retcode-number and a string (after the retcode)
static int drvftp_cmdctrl_send_command_get_response(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *command,char *respbuf,unsigned int buflen,unsigned int respcontrol,unsigned int expected_respcode)
{
 int retcode;
 drvftp_cmdctrl_flush_responses(ftpi,socketinfo_session);
 if(!diskdriv_drvftp_cmdctrl_sendcommand(ftpi,socketinfo_session,command))
  return 0;
 if(respbuf && buflen){
  char *s;
  *respbuf=0;
  do{
   retcode=diskdriv_drvftp_cmdctrl_read_response(ftpi,socketinfo_session,respbuf,buflen,respcontrol);
   if(!retcode || (retcode>=DRVFTP_RESPCODE_ERRORCODES))
    return retcode;
  }while(retcode!=expected_respcode);
  s=pds_strchr(respbuf,'\r');
  if(s){
   *s=0;
   pds_strcpy(respbuf,&respbuf[4]);
  }else{
   pds_strncpy(respbuf,&respbuf[4],buflen-4);
   respbuf[buflen-4]=0;
  }
 }else
  retcode=drvftp_cmdctrl_read_respcode(ftpi,socketinfo_session,respcontrol);
 return retcode;
}

//with auto reconnect
static unsigned int drvftp_cmdctrl_arc_send_command_check_respcode(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *command,unsigned int expected_respcode)
{
 unsigned int retry=1;
 do{
  drvftp_cmdctrl_flush_responses(ftpi,socketinfo_session);
  if(!diskdriv_drvftp_cmdctrl_sendcommand(ftpi,socketinfo_session,command))
   break;
  if(drvftp_cmdctrl_check_respcode(ftpi,socketinfo_session,DRVFTP_RESPCNTR_NONE,expected_respcode))
   return 1;
  if(!funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_RECONNECT))
   break;
  if(!retry)
   break;
  retry=0;
  if(!ftpdrive_session_connect(ftpi))
   break;
 }while(1);
 return 0;
}

static unsigned int drvftp_cmdctrl_arc_send_command_get_success(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *command)
{
 unsigned int retry=1,retcode=0;
 do{
  retcode=drvftp_cmdctrl_send_command_get_success(ftpi,socketinfo_session,command);
  if(retcode)
   break;
  if(!funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_RECONNECT))
   break;
  if(!retry)
   break;
  retry=0;
  if(!ftpdrive_session_connect(ftpi))
   break;
 }while(1);
 return retcode;
}

static int drvftp_cmdctrl_arc_send_command_get_response(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,char *command,char *respbuf,unsigned int buflen,unsigned int respcontrol,unsigned int expected_respcode)
{
 unsigned int retry=1,retcode=0;
 do{
  retcode=drvftp_cmdctrl_send_command_get_response(ftpi,socketinfo_session,command,respbuf,buflen,respcontrol,expected_respcode);
  if(retcode)
   break;
  if(!funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_RECONNECT))
   break;
  if(!retry)
   break;
  retry=0;
  if(!ftpdrive_session_connect(ftpi))
   break;
 }while(1);
 return retcode;
}

//---------------------------------------------------------------------------
static int drvftp_dataconn_send_type(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_session,unsigned int type)
{
 char *command;
 if(ftpi->lastdatatype==type)
  return 1;
 switch(type){
  case DRVFTP_DATATYPE_ASCII:command="TYPE A";break;
  case DRVFTP_DATATYPE_BINARY:command="TYPE I";break;
  default:return 0;
 }
 if(!drvftp_cmdctrl_send_command_check_respcode(ftpi,socketinfo_session,command,DRVFTP_RESPCODE_COMMAND_OK))
  return 0;
 funcbit_smp_value_put(ftpi->lastdatatype,type);
 return 1;
}

static int drvftp_dataconn_open(struct ftpdrive_info_s *ftpi,struct ftpfile_info_s *ftfi,char *command,char *openpathfilename,struct ftpdrive_socket_info_s *socketinfo_filehand,unsigned int datatype)
{
 unsigned int success=0,retry=DRVFTP_DEFAULT_TIMEOUTRETRY_DATACONN,i;
 unsigned long ip_nums[DRVFTP_IP4_LEN],port_nums[2];
 mpxp_uint64_t endtime_dataconn;
 char *filename,*ip,cmd[MAX_PATHNAMELEN+16];
 char newdir[MAX_PATHNAMELEN];

 if(ftfi){ // filename
  filename=tcpcomon_str_getpath_from_fullname(newdir,openpathfilename);
  if(!filename) // should not happen
   goto err_out_getdataa;
 }else{    // directory
  pds_strcpy(newdir,openpathfilename);
  filename=NULL;
 }
 if(newdir[0])
  if(drvftp_cwd(ftpi,newdir)!=0) // cwd to dir of file (some servers don't like full pathes)
   goto err_out_getdataa;

 do{
  ftpi->lowfunc->socket_close(socketinfo_filehand,0);

  drvftp_cmdctrl_flush_responses(ftpi,&(ftpi->socket_info_session));

  if(!ftpi->lowfunc->socket_open(socketinfo_filehand,((ftpi->socket_bufsize)? ftpi->socket_bufsize:DRVFTP_DEFAULT_RCVBUFSIZE)))
   break;

  if(!drvftp_dataconn_send_type(ftpi,&(ftpi->socket_info_session),datatype))
   goto err_out_cont;

  if(ftfi && !ftfi->filesize){
   snprintf(cmd,sizeof(cmd),"SIZE %s",filename);
   if(drvftp_cmdctrl_send_command_check_respcode(ftpi,&(ftpi->socket_info_session),cmd,DRVFTP_RESPCODE_CMD_SIZE_OK))
#ifdef MPXPLAY_FSIZE64
    ftfi->filesize=pds_atoi64(ftpi->lastresptext);
#else
    ftfi->filesize=pds_atol(ftpi->lastresptext);
#endif
   else if((ftpi->lastrespcode==DRVFTP_RESPCODE_FILE_NOT_FOUND) && funcbit_test(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_READ)){
    struct tcpcomon_cached_direntry_info_s *ed=tcpcomon_dircache_entry_searchby_fullname(&ftpi->cdrvi,openpathfilename);
    if(ed && ed->filesize)
     ftfi->filesize=ed->filesize;
    else
     goto err_out_getdataa;
   }
  }

  if(funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_PASSIVE_MODE)){
   //unsigned int rc_pasv[5]={DRVFTP_RESPCODE_ENTERING_PASSIVE,DRVFTP_RESPCODE_ABOR_SUCCESS,DRVFTP_RESPCODE_TRANSFER_ABORTED,DRVFTP_RESPCODE_TRANSFER_RESETED,0}; // !!! hack
   //if(!drvftp_cmdctrl_send_command_respcntr_check_listof_respcodes(ftpi,&(ftpi->socket_info_session),"PASV",DRVFTP_RESPCNTR_NONE,&rc_pasv[0]))
   if(!drvftp_cmdctrl_send_command_check_respcode(ftpi,&(ftpi->socket_info_session),"PASV",DRVFTP_RESPCODE_ENTERING_PASSIVE))
    goto err_out_cont;
   ip=pds_strchr(ftpi->lastresptext,'(');
   if(!ip)
    goto err_out_cont;
   pds_memset(&ip_nums[0],0,sizeof(ip_nums));
   pds_memset(&port_nums[0],0,sizeof(port_nums));
   sscanf(ip,"(%d,%d,%d,%d,%d,%d)",&ip_nums[0],&ip_nums[1],&ip_nums[2],&ip_nums[3],&port_nums[0],&port_nums[1]);
   socketinfo_filehand->portnum=(port_nums[0]<<8)+port_nums[1];
   if(socketinfo_filehand->portnum>=65536)
    goto err_out_cont;
   for(i=0;i<DRVFTP_IP4_LEN;i++)
    socketinfo_filehand->conn_ip_addr[i]=ip_nums[i];
  }else{
   if(!ftpi->lowfunc->socket_listen(socketinfo_filehand,&ftpi->ip_local[0]))
    goto err_out_cont;
   sprintf(cmd,"PORT %d,%d,%d,%d,%d,%d",(unsigned int)ftpi->ip_local[0],(unsigned int)ftpi->ip_local[1],
    (unsigned int)ftpi->ip_local[2],(unsigned int)ftpi->ip_local[3],(socketinfo_filehand->portnum>>8),(socketinfo_filehand->portnum&0xff));
   if(!drvftp_cmdctrl_send_command_check_respcode(ftpi,&(ftpi->socket_info_session),cmd,DRVFTP_RESPCODE_COMMAND_OK))
    goto err_out_cont;
  }

  if(ftfi && ftfi->filepos){
   sprintf(cmd,"REST %d",ftfi->filepos);
   if(!drvftp_cmdctrl_send_command_check_respcode(ftpi,&(ftpi->socket_info_session),cmd,DRVFTP_RESPCODE_CMD_REST_OK))
    goto err_out_getdataa;
  }

  snprintf(cmd,sizeof(cmd),"%s%s%s",command,((filename)? " ":""),((filename)? filename:""));

  if(funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_PASSIVE_MODE)){
   unsigned int rc[3]={DRVFTP_RESPCODE_OPENING_DATACONN,125,0};
   if(!diskdriv_drvftp_cmdctrl_sendcommand(ftpi,&ftpi->socket_info_session,cmd))
    goto err_out_cont;
   if(!ftpi->lowfunc->socket_connect(socketinfo_filehand))
    goto err_out_cont;
   if(!drvftp_cmdctrl_check_listof_respcodes(ftpi,&ftpi->socket_info_session,DRVFTP_RESPCNTR_NONE,&rc[0])){
    if(ftpi->lastrespcode==DRVFTP_RESPCODE_FILE_NOT_FOUND)
     goto err_out_getdataa;
    goto err_out_cont;
   }
   if(!ftpi->lowfunc->socket_ssl_connect || ftpi->lowfunc->socket_ssl_connect(socketinfo_filehand))
    success=1;
  }else{
   if(!drvftp_cmdctrl_send_command_check_respcode(ftpi,&(ftpi->socket_info_session),cmd,DRVFTP_RESPCODE_OPENING_DATACONN))
    goto err_out_cont;
   endtime_dataconn=pds_gettimem()+DRVFTP_DEFAULT_TIMEOUTMS_ACCEPT;
   do{
    if(ftpi->lowfunc->socket_accept(socketinfo_filehand)){
     success=1;
     break;
    }
    if(drvftp_cmdctrl_read_respcode(ftpi,&(ftpi->socket_info_session),DRVFTP_RESPCNTR_INSTANT)==DRVFTP_RESPCODE_DATACONN_FAILED)
     break;
   }while(pds_gettimem()<=endtime_dataconn);
  }
err_out_cont:
  if(success)
   break;
  if(pds_look_extgetch()==KEY_ESC)
   goto err_out_getdataa;
  if(funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_RECONNECT))
   if(!ftpdrive_session_connect(ftpi))
    break;
 }while(--retry);

 funcbit_smp_value_put(ftpi->socket_bufsize,0);

 if(success)
  return 1;

 snprintf(cmd,sizeof(cmd),"dataconn (file/dir) open failed!\n%s",((filename)? filename:((openpathfilename)? openpathfilename:"")));
 drvftp_message_write_error(cmd);

err_out_getdataa:
 //snprintf(cmd,sizeof(cmd),"%s\n%s",ftpi->lastresptext,((filename)? filename:((openpathfilename)? openpathfilename:"")));
 //drvftp_message_write_error(cmd);
 ftpi->lowfunc->socket_close(socketinfo_filehand,0);
 return 0;
}

static long drvftp_dataconn_read(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_filehand,char *bufptr,unsigned int buflen,unsigned int requested_bytes,mpxp_uint64_t timeoutms_dcr)
{
 long total_bytes_read=0,readbytes,conn_error=0;
 mpxp_uint64_t endtime_response;
 struct fptdrive_timeoutmsg_s tos;
#ifdef MPXPLAY_DRVFTP_DEBUGFILE
 char sout[128];
#endif

 if(timeoutms_dcr){
  endtime_response=pds_gettimem()+timeoutms_dcr;
  drvftp_message_timeout_init(&tos,endtime_response,"FTP: read retry %d sec ...");
 }
 if(!requested_bytes)
  requested_bytes=1;
 do{
  readbytes=0;
  drvftp_cmdctrl_read_respcode(ftpi,&(ftpi->socket_info_session),DRVFTP_RESPCNTR_INSTANT);
  if(ftpi->lastrespcode>=DRVFTP_RESPCODE_ERRORCODES)
   break;
  if(ftpi->lastrespcode!=DRVFTP_RESPCODE_TRANSFER_COMPLETE){
   readbytes=ftpi->lowfunc->bytes_buffered(socketinfo_filehand);
   if(readbytes<0){
    conn_error=1;
    break;
   }
   if(readbytes && timeoutms_dcr){
    endtime_response=pds_gettimem()+timeoutms_dcr;
    drvftp_message_timeout_reset(&tos,endtime_response);
   }
  }
  if(readbytes || (ftpi->lastrespcode==DRVFTP_RESPCODE_TRANSFER_COMPLETE)){
   readbytes=ftpi->lowfunc->receive(socketinfo_filehand,bufptr,buflen);
   total_bytes_read+=readbytes;
   if((ftpi->lastrespcode==DRVFTP_RESPCODE_TRANSFER_COMPLETE) || (total_bytes_read>=requested_bytes))
    break;
   if(readbytes>=buflen)
    break;
   buflen-=readbytes;
   bufptr+=readbytes;
  }
  if(!total_bytes_read && (ftpi->lowfunc->socket_select(socketinfo_filehand,DRVFTP_SOCKSELECT_MODE_READ)!=0)){
   readbytes=ftpi->lowfunc->bytes_buffered(socketinfo_filehand);
   if(readbytes<=0){
#ifdef MPXPLAY_DRVFTP_DEBUGFILE
    sprintf(sout,"select failed : rb:%d ss:%d",readbytes,ftpi->lowfunc->socket_select(socketinfo_filehand,DRVFTP_SOCKSELECT_MODE_READ));
    drvftp_message_write_error(sout);
#endif
    conn_error=1;
    break;
   }
  }
  if(!timeoutms_dcr || (pds_gettimem()>endtime_response))
   break;
  drvftp_message_timeout_write(&tos);
 }while(1);
 if(timeoutms_dcr)
  drvftp_message_timeout_close(&tos);

#ifdef MPXPLAY_DRVFTP_DEBUGFILE
 sprintf(sout,"read: rb:%d tbr:%d lr:%d ce:%d",requested_bytes,total_bytes_read,ftpi->lastrespcode,conn_error);
 drvftp_message_write_error(sout);
#endif

 return ((total_bytes_read || !conn_error)? total_bytes_read:-1);
}

static int drvftp_dataconn_write(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_filehand,char *buf,unsigned int len)
{
 return ftpi->lowfunc->send(socketinfo_filehand,buf,len);
}

static void drvftp_dataconn_close(struct ftpdrive_info_s *ftpi,struct ftpdrive_socket_info_s *socketinfo_filehand)
{
 unsigned int rc_abor[6]={DRVFTP_RESPCODE_TRANSFER_COMPLETE,DRVFTP_RESPCODE_ABOR_SUCCESS,DRVFTP_RESPCODE_TRANSFER_ABORTED,DRVFTP_RESPCODE_OPENING_DATACONN,DRVFTP_RESPCODE_DATACONN_FAILED,0};
 if(mpxplay_tcpcommon_socket_check(socketinfo_filehand)){
  if((ftpi->lastrespcode!=DRVFTP_RESPCODE_TRANSFER_COMPLETE) && !funcbit_test(socketinfo_filehand->flags,DRVFTP_SOCKINFO_FLAG_DIRECTION_SEND)){
   drvftp_cmdctrl_flush_responses(ftpi,&(ftpi->socket_info_session));
   diskdriv_drvftp_cmdctrl_sendcommand(ftpi,&(ftpi->socket_info_session),"ABOR");
  }
  ftpi->lowfunc->socket_close(socketinfo_filehand,0);
  if(ftpi->lastrespcode!=DRVFTP_RESPCODE_TRANSFER_COMPLETE){
   if(funcbit_test(socketinfo_filehand->flags,DRVFTP_SOCKINFO_FLAG_DIRECTION_SEND))
    drvftp_cmdctrl_check_respcode(ftpi,&(ftpi->socket_info_session),DRVFTP_RESPCNTR_NONE,DRVFTP_RESPCODE_TRANSFER_COMPLETE); // !!! handles TRANSFER_ABORTED too by the general error checking, ??? when will this line fail?
   else
    drvftp_cmdctrl_check_listof_respcodes(ftpi,&(ftpi->socket_info_session),DRVFTP_RESPCNTR_NONE,&rc_abor[0]);
  }
  if(funcbit_test(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_RECONNECT))
   ftpdrive_session_connect(ftpi);
 }
}

static void drvftp_get_serverfeatures(struct ftpdrive_info_s *ftpi)
{
 unsigned long srv_features=0;
 char featline[256];
 if(!drvftp_cmdctrl_send_command_check_respcode(ftpi,&(ftpi->socket_info_session),"FEAT",211))
  return;
 do{
  long retcode;
  ftpdrive_feattable_s *ft=&ftpdrive_feature_table[0];
  if(!diskdriv_drvftp_cmdctrl_read_respline(ftpi,&(ftpi->socket_info_session),featline,sizeof(featline),0))
   break;
  retcode=pds_atol(featline);
  if(retcode) // have to be 211 (end of features)
   break;
  do{
   pds_strcutspc(featline);
   if(pds_strnicmp(featline,ft->featname,pds_strlen(ft->featname))==0)
    funcbit_enable(srv_features,ft->featflag);
   ft++;
  }while(ft->featflag);
 }while(1);
 funcbit_smp_value_put(ftpi->server_features,srv_features);
}

//-------------------------------------------------------------------------

static long ftpdrive_drive_config(void *drive_data,unsigned long funcnum,void *argp1,void *argp2)
{
 struct ftpdrive_info_s *ftpi;
 struct ftpfile_info_s *ftfi;
 unsigned long i,j,k;
 char strtmp[1024],strtm2[64];

 switch(funcnum){
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_DRVOPENNAME:
   if(!argp1 || !argp2)
    return MPXPLAY_DISKDRIV_CFGERROR_ARGUMENTMISSING;
   j=DRVFTP_MAX_SESSIONS;
   k=0;
   for(i=0;i<DRVFTP_MAX_SESSIONS;i++){
    ftpi=ftpdrives_info_ptrs[i];
    if(ftpi){
     if(ftpi->connect_id_num>k){
      k=ftpi->connect_id_num;
      j=i;
     }
    }
   }
   if(j<DRVFTP_MAX_SESSIONS){
    ftpi=ftpdrives_info_ptrs[j];
    snprintf((char *)argp1,*((unsigned long *)argp2),"%s//%s%s%s%s%s%s",
     ftpi->lowfunc->name,
     ((ftpi->username[0])? ftpi->username:""),
     ((ftpi->username[0] && ftpi->password[0])? ":":""),
     ((ftpi->password[0])? ftpi->password:""),
     ((ftpi->username[0] && ftpi->password[0])? "@":""),
     ftpi->servername,ftpi->currremotedir_selected);
    return 1;
   }
   return 0;
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_ISDIRROOT:
   if(!argp1)
    return MPXPLAY_DISKDRIV_CFGERROR_ARGUMENTMISSING;
   tcpcomon_str_localname_to_remote(strtmp,(char *)argp1,sizeof(strtmp));
   i=pds_strlen(strtmp);
   if(!i)
    return 1;
   if((strtmp[0]==PDS_DIRECTORY_SEPARATOR_CHAR_UNXFTP) && (i==1)) // '/'
    return 1;
   if((strtmp[0]==PDS_DIRECTORY_SEPARATOR_CHAR_UNXFTP) && (strtmp[1]==PDS_DIRECTORY_SEPARATOR_CHAR_UNXFTP) && (i==2)) // '//'
    return 1;
   if((strtmp[1]==':') && (i<sizeof(PDS_DIRECTORY_ROOTDIR_STR)))  // "d:/"
    return 1;
   if((strtmp[0]==PDS_DIRECTORY_SEPARATOR_CHAR_UNXFTP) && (strtmp[2]==':') && (i<=sizeof(PDS_DIRECTORY_ROOTDIR_STR))) // "/d:/"
    return 1;
   return 0;
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_CHKBUFBLOCKBYTES:
   return 4096;  // ???
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_PREREADBUFBYTES:
   return 65536; // !!! ???
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_REALLYFULLPATH:
   if(!argp1 || !argp2)
    return MPXPLAY_DISKDRIV_CFGERROR_ARGUMENTMISSING;
   if(drive_data)
    break;
   tcpcomon_str_localname_to_remote((char *)argp1,(char *)argp2,MAX_PATHNAMELEN);
   return 1;
 }

 if(!drive_data)
  return MPXPLAY_DISKDRIV_CFGERROR_INVALID_DRIVE;
 ftpi=drive_data;
 ftfi=drive_data;

 switch(funcnum){
  // ftpi
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_CMD_RESETDRIVE:
   if(mpxplay_tcpcommon_socket_check(&ftpi->socket_info_session) && (ftpi->connection_retry==DRVFTP_DEFAULT_TIMEOUTRETRY_SESSION))
    tcpcomon_dircache_alldirs_dealloc(&ftpi->cdrvi);
   ftpi->currremotedir_real[0]=0;
   funcbit_smp_value_put(ftpi->connection_retry,DRVFTP_DEFAULT_TIMEOUTRETRY_SESSION);
   return 1;
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_ISFILESYSUNX:return 1; // ftp is always unix type
  //case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_ISFILESYSUNX:if(ftpi->system_type==DRVFTP_FTPDRIVEINFO_SYSTYPE_UNIX) return 1; else return 0;
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_UTFTYPE:
   if((ftpi->flags&DRVFTP_FTPDRIVE_FLAG_USE_UTF8) && (ftpi->server_features&DRVFTP_FEATURE_UTF8))
    return MPXPLAY_TEXTCONV_TYPE_UTF8;
   return MPXPLAY_TEXTCONV_TYPE_CHAR;
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_ISDIREXISTS:return ftpdrive_checkdir(ftpi,(char *)argp1);
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_DRVTYPENAME:
   if(!argp1 || !argp2)
    return MPXPLAY_DISKDRIV_CFGERROR_ARGUMENTMISSING;
   snprintf((char *)argp1,*((unsigned long *)argp2),"%s%s",ftpi->lowfunc->name,ftpi->servername);
   return 1;
  case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_REALLYFULLPATH:
   if(!argp1 || !argp2)
    return MPXPLAY_DISKDRIV_CFGERROR_ARGUMENTMISSING;
   tcpcomon_str_localname_to_remote(strtmp,(char *)argp2,sizeof(strtmp));
   if(ftpi->socket_info_session.portnum!=ftpi->lowfunc->def_portnum)
    sprintf(strtm2,":%d",ftpi->socket_info_session.portnum);
   else
    strtm2[0]=0;
   sprintf((char *)argp1,"%s//%s%s%s%s%s%s%s%s",ftpi->lowfunc->name,
    ftpi->username,((ftpi->password[0])? ":":""),ftpi->password,
    ((ftpi->username[0])? "@":""),ftpi->servername,strtm2,
    ((strtmp[0]!=PDS_DIRECTORY_SEPARATOR_CHAR_UNXFTP)? PDS_DIRECTORY_SEPARATOR_STR_UNXFTP:""),
    strtmp);
   return 1;
  /*case MPXPLAY_DISKDRIV_CFGFUNCNUM_GET_ERRORLASTTEXT:
   if(!argp1 || !argp2)
    return MPXPLAY_DISKDRIV_CFGERROR_ARGUMENTMISSING;
   if(!ftpi->lastrespcode){
    ((char *)argp1)[0]=0;
    return 0;
   }
   pds_strncpy((char *)argp1,ftpi->lastresptext,*((unsigned long *)argp2));
   ((char *)argp1)[*((unsigned long *)argp2)-1]=0;
   return 1;*/

  // ftfi
  case MPXPLAY_DISKFILE_CFGFUNCNUM_SET_FILEBLOCKSIZE:
   if(!argp1)
    return MPXPLAY_DISKDRIV_CFGERROR_ARGUMENTMISSING;
   funcbit_smp_value_put(ftfi->file_bufsize,(*((unsigned long *)argp1)));
   return 1;
  case MPXPLAY_DISKFILE_CFGFUNCNUM_SET_READWAIT:
   if(!argp1)
    return MPXPLAY_DISKDRIV_CFGERROR_ARGUMENTMISSING;
   if(*((unsigned long *)argp1))
    funcbit_enable(ftfi->flags,DRVFTP_FTPFILE_FLAG_READWAIT);
   else
    funcbit_disable(ftfi->flags,DRVFTP_FTPFILE_FLAG_READWAIT);
   return 1;
 }
 return MPXPLAY_DISKDRIV_CFGERROR_UNSUPPFUNC;
}

static struct ftpdrive_lowlevel_func_s *ftpdrive_drive_getlowfunc_by_name(char *name)
{
 struct ftpdrive_lowlevel_func_s **lowfunc=&ALL_lowlevel_funcs[0];
 do{
  if(pds_strlicmp(name,(*lowfunc)->name)==0)
   return (*lowfunc);
  lowfunc++;
 }while(*lowfunc);
 return NULL;
}

static unsigned int ftpdrive_drive_check(char *pathname)
{
 if(ftpdrive_drive_getlowfunc_by_name(pathname))
  return 1;
 return 0;
}

static unsigned int ftpdrive_session_connect(struct ftpdrive_info_s *ftpi)
{
 char strtmp[MAX_PATHNAMELEN];

 funcbit_smp_value_put(ftpi->currremotedir_real[0],0);
 funcbit_smp_disable(ftpi->flags,DRVFTP_FTPDRIVE_FLAG_RECONNECT);
 funcbit_smp_value_put(ftpi->file_open_id_num,DRVFTP_FILEOPENID_FREE);
 funcbit_smp_value_put(ftpi->lastrespcode,0);
 funcbit_smp_value_put(ftpi->lastdatatype,0);

 ftpi->lowfunc->socket_close(&ftpi->socket_info_session,1);
 ftpi->lowfunc->socket_close(&ftpi->socket_info_filehand,0);

 if(!ftpi->connection_retry)
  return 0;
 funcbit_smp_value_decrement(ftpi->connection_retry);
 ftpi->lastresptext[0]=0;

 drvftp_message_write_error("getting ip adresses...");

 if(!ftpi->lowfunc->addressinfo_init(&ftpi->socket_info_session,ftpi->servername,&ftpi->ip_local[0],&ftpi->ip_remote[0])){
  drvftp_message_write_error("getting IP address(es) failed!");
  return 0;
 }

 drvftp_message_write_error("opening socket...");

 if(!ftpi->lowfunc->socket_open(&ftpi->socket_info_session,0)){
  drvftp_message_write_error("couldn't open socket!");
  return 0;
 }
 drvftp_message_write_error("connecting to server...");
 pds_smp_memcpy(&ftpi->socket_info_session.conn_ip_addr,&ftpi->ip_remote,DRVFTP_IP4_LEN);
 if(!ftpi->lowfunc->socket_connect(&ftpi->socket_info_session)){
  pds_strcpy(ftpi->lastresptext,"no connection to the server!");
  goto err_out_sc;
 }
 if(ftpi->lowfunc->socket_ssl_connect && !ftpi->lowfunc->socket_ssl_connect(&ftpi->socket_info_session)){
  pds_strcpy(ftpi->lastresptext,"SSL connect to server failed!");
  goto err_out_sc;
 }
 drvftp_message_write_error("waiting for welcome message...");
 if(drvftp_cmdctrl_read_respcode(ftpi,&ftpi->socket_info_session,DRVFTP_RESPCNTR_LONGWAIT)!=220){
  if(!ftpi->lastrespcode)
   pds_strcpy(ftpi->lastresptext,"no server response (offline/down)!");
  goto err_out_sc;
 }
 if(ftpi->lowfunc->login_preprocess){
  if(!ftpi->lowfunc->login_preprocess((void *)ftpi,&ftpi->socket_info_session))
   goto err_out_sc;
 }
 drvftp_message_write_error("logging in...");
 if(ftpi->username[0]){
  unsigned int rc_user[3]={331,230,0};
  sprintf(strtmp,"USER %s",ftpi->username);
  if(!drvftp_cmdctrl_send_command_respcntr_check_listof_respcodes(ftpi,&ftpi->socket_info_session,strtmp,DRVFTP_RESPCNTR_LONGWAIT,rc_user))
   goto err_out_sc;
  if(ftpi->lastrespcode==331){
   if(!ftpi->password[0])
    goto err_out_sc;
   sprintf(strtmp,"PASS %s",ftpi->password);
   if(!drvftp_cmdctrl_send_command_respcntr_check_respcode(ftpi,&ftpi->socket_info_session,strtmp,DRVFTP_RESPCNTR_LONGWAIT,230))
    goto err_out_sc;
  }
 }

 drvftp_message_write_error("login ok, opening...");

 /*strtmp[0]=0;
 if(drvftp_cmdctrl_send_command_get_response(ftpi,&ftpi->socket_info_session,"SYST",strtmp,sizeof(strtmp),DRVFTP_RESPCNTR_NONE,215)==215){
  if(pds_strnicmp(strtmp,"UNIX",4)==0)
   funcbit_smp_value_put(ftpi->system_type,DRVFTP_FTPDRIVEINFO_SYSTYPE_UNIX);
  //else if(pds_strnicmp(strtmp,"Windows_NT",10)==0)
  // funcbit_smp_value_put(ftpi->system_type,DRVFTP_FTPDRIVEINFO_SYSTYPE_WINNT);
 }*/

 drvftp_get_serverfeatures(ftpi);

 //if(ftpi->server_features&DRVFTP_FEATURE_CLNT)
 // drvftp_cmdctrl_send_command_get_success(ftpi,&ftpi->socket_info_session,"CLNT Mpxplay");

 if(ftpi->server_features&DRVFTP_FEATURE_UTF8)
  if(!drvftp_cmdctrl_send_command_check_respcode(ftpi,&ftpi->socket_info_session,((ftpi->flags&DRVFTP_FTPDRIVE_FLAG_USE_UTF8)? "OPTS UTF8 ON":"OPTS UTF8 OFF"),DRVFTP_RESPCODE_COMMAND_OK))
   funcbit_disable(ftpi->server_features,DRVFTP_FEATURE_UTF8);

 if(ftpi->socket_info_session.sslhand){
  drvftp_cmdctrl_send_command_get_success(ftpi,&ftpi->socket_info_session,"PBSZ 0");
  drvftp_cmdctrl_send_command_get_success(ftpi,&ftpi->socket_info_session,"PROT P");
 }

 if(ftpi->currremotedir_selected[0]){
  if(drvftp_cwd(ftpi,ftpi->currremotedir_selected)<0){
   drvftp_getcurrdir_real(ftpi,1);
   pds_strcpy(ftpi->currremotedir_selected,ftpi->currremotedir_real);
  }
 }

 funcbit_smp_value_put(ftpi->connection_retry,DRVFTP_DEFAULT_TIMEOUTRETRY_SESSION);

 display_clear_timed_message();

 return 1;

err_out_sc:
 drvftp_message_write_error(ftpi->lastresptext);
 ftpi->lowfunc->socket_close(&ftpi->socket_info_session,1);
 return 0;
}

static unsigned int ftpdrive_extract_logininfos_from_path(struct ftpdrive_info_s *ftpi,char *pathname)
{
 char *hostname,*portnum,*username,*password,*dirname,strtmp[MAX_PATHNAMELEN];

 funcbit_smp_pointer_put(ftpi->lowfunc,ftpdrive_drive_getlowfunc_by_name(pathname));
 if(!ftpi->lowfunc)
  return 0;

 pathname+=pds_strlen(ftpi->lowfunc->name);

 while(*pathname=='/')
  pathname++;

 pds_strcpy(strtmp,pathname);
 hostname=pds_strrchr(strtmp,DRVFTP_PATHSEPARATOR_USER);
 if(hostname){
  *hostname++=0;
  username=&strtmp[0];
  password=pds_strchr(strtmp,DRVFTP_PATHSEPARATOR_PASSWORD);
  if(password)
   *password++=0;
  pds_strcpy(ftpi->username,username);
  pds_strcpy(ftpi->password,password);
 }else{
  hostname=&strtmp[0];
  if(mpxplay_diskdrive_drvftp_config&DRVFTP_FTPDRIVE_FLAG_USE_ANONYM_LOGIN){
   pds_strcpy(ftpi->username,"anonymous");
   pds_strcpy(ftpi->password,"anybody@hotmail.com");
  }
 }

 dirname=pds_strchr(hostname,PDS_DIRECTORY_SEPARATOR_CHAR_UNXFTP);
 if(dirname){
  pds_strcpy(ftpi->currremotedir_selected,dirname);
  *dirname=0;
 }
 portnum=pds_strchr(hostname,DRVFTP_PATHSEPARATOR_PORTNUM);
 if(portnum){
  *portnum++=0;
  funcbit_smp_value_put(ftpi->socket_info_session.portnum,pds_atol(portnum));
 }
 if(!ftpi->socket_info_session.portnum)
  funcbit_smp_value_put(ftpi->socket_info_session.portnum,ftpi->lowfunc->def_portnum);

 pds_strcpy(ftpi->servername,hostname);

 return 1;
}

static unsigned int ftpdrive_compare_logininfos(struct ftpdrive_info_s *ftpi1,struct ftpdrive_info_s *ftpi2)
{
 if(ftpi1->lowfunc!=ftpi2->lowfunc)
  return 0;
 if(ftpi1->socket_info_session.portnum!=ftpi2->socket_info_session.portnum)
  return 0;
 if(pds_stricmp(ftpi1->servername,ftpi2->servername)!=0)
  return 0;
 if(pds_stricmp(ftpi1->username,ftpi2->username)!=0)
  return 0;
 if(pds_stricmp(ftpi1->password,ftpi2->password)!=0)
  return 0;
 return 1; // same
}

static void *ftpdrive_drive_connect(char *pathname)
{
 struct ftpdrive_info_s *ftpi;

 ftpi=(struct ftpdrive_info_s *)calloc(1,sizeof(*ftpi));
 if(!ftpi)
  return ftpi;

#ifdef MPXPLAY_DRVFTP_DEBUGFILE
 if(!debug_fp)
  debug_fp=fopen(MPXPLAY_DRVFTP_DEBUGFILE,"a+b");
#endif

 if(drvftp_connectid_num>=0x7fffffff)
  funcbit_smp_value_put(drvftp_connectid_num,0);

 funcbit_smp_value_increment(drvftp_connectid_num);
 funcbit_smp_value_put(ftpi->connect_id_num,drvftp_connectid_num);
 funcbit_smp_value_put(ftpi->flags,mpxplay_diskdrive_drvftp_config);
 funcbit_smp_value_put(ftpi->connection_retry,DRVFTP_DEFAULT_TIMEOUTRETRY_SESSION);
 mpxplay_tcpcommon_socket_reset(&ftpi->socket_info_session); // !!! must have
 mpxplay_tcpcommon_socket_reset(&ftpi->socket_info_filehand); //

 if(!ftpdrive_extract_logininfos_from_path(ftpi,pathname))
  goto err_out_mount;

 if(!ftpi->lowfunc->global_init())
  goto err_out_mount;

 if(!ftpdrive_session_connect(ftpi))
  goto err_out_mount;

 return ftpi;

err_out_mount:
 ftpdrive_drive_unmount(ftpi);
 return NULL;
}

static void *ftpdrive_drive_mount(char *pathname)
{
 unsigned int i;
 struct ftpdrive_info_s *ftpi=NULL,ftpi_infos;

 ftpi=ftpdrives_info_ptrs[DRVFTP_VIRTUALDRV_FTPFILE];
 if(ftpi){ // closing ftp-file session, using disk-session if they match
  pds_memset(&ftpi_infos,0,sizeof(ftpi_infos));
  if(ftpdrive_extract_logininfos_from_path(&ftpi_infos,pathname))
   if(ftpdrive_compare_logininfos(&ftpi_infos,ftpi))
    ftpdrive_drive_unmount(ftpi);
 }

 for(i=0;i<DRVFTP_MAX_VIRTUAL_DRIVES;i++)
  if(!ftpdrives_info_ptrs[i])
   break;

 if(i>=DRVFTP_MAX_VIRTUAL_DRIVES)
  return ftpi;

 ftpi=ftpdrive_drive_connect(pathname);
 if(!ftpi)
  return ftpi;

 funcbit_smp_pointer_put(ftpdrives_info_ptrs[i],ftpi);
 funcbit_smp_pointer_put(ftpi->ftpdrive_info_ptr,&ftpdrives_info_ptrs[i]);

 return ftpi;
}

static void ftpdrive_drive_close(struct ftpdrive_info_s *ftpi)
{
 if(ftpi){
  ftpi->lowfunc->socket_close(&ftpi->socket_info_filehand,1);
  ftpi->lowfunc->socket_close(&ftpi->socket_info_session,1);
  tcpcomon_dircache_alldirs_dealloc(&ftpi->cdrvi);
  if(ftpi->ftpdrive_info_ptr)
   funcbit_smp_pointer_put(*(ftpi->ftpdrive_info_ptr),NULL);
  free(ftpi);
 }
}

static void ftpdrive_drive_unmount(void *drivehand_data)
{
 struct ftpdrive_info_s *ftpi=drivehand_data;
 if(ftpi){
  ftpdrive_drive_close(ftpi);
 }else{ // all flush / global deinit
  struct ftpdrive_lowlevel_func_s **lowfunc;
  unsigned int i;
  for(i=0;i<DRVFTP_MAX_SESSIONS;i++){
   ftpi=ftpdrives_info_ptrs[i];
   if(ftpi){
    ftpdrive_drive_close(ftpi);
    funcbit_smp_pointer_put(ftpdrives_info_ptrs[i],NULL);
   }
  }
  lowfunc=&ALL_lowlevel_funcs[0];
  do{
   if((*lowfunc)->global_deinit)
    (*lowfunc)->global_deinit();
   lowfunc++;
  }while(*lowfunc);
 }
#ifdef MPXPLAY_DRVFTP_DEBUGFILE
 //if(debug_fp)
 // fclose(debug_fp);
 fflush(debug_fp);
#endif
}

static void ftpdrive_close_and_lock_filehand(struct ftpdrive_info_s *ftpi)
{
 drvftp_dataconn_close(ftpi,&ftpi->socket_info_filehand);
 funcbit_smp_value_put(ftpi->file_open_id_num,DRVFTP_FILEOPENID_BUSY);
}

static void ftpdrive_unlock_filehand(struct ftpdrive_info_s *ftpi)
{
 if(ftpi->file_open_id_num==DRVFTP_FILEOPENID_BUSY)
  funcbit_smp_value_put(ftpi->file_open_id_num,DRVFTP_FILEOPENID_FREE);
}

//-----------------------------------------------------------------------
#define DRVFTP_LISTLINE_MAXPARTS_WINNT 4
#define DRVFTP_LISTLINE_MAXPARTS_UNIX  9

static char *strMon[] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
		   "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",NULL };

static unsigned int drvftp_str_listline_slice(char *listline,char **parts,unsigned int maxparts)
{
 unsigned int partnum=0;
 do{
  char *next;
  while(*listline==' ')
   listline++;
  if(!listline[0])
   break;
  parts[partnum++]=listline;
  if(partnum>=maxparts)
   break;
  next=pds_strchr(listline,' ');
  if(!next)
   break;
  *next++=0;
  listline=next;
 }while(1);
 return partnum;
}

static unsigned int drvftp_str_listline_to_direntry_winnt(char *listline,struct pds_find_t *ffblk)
{
 char *parts[DRVFTP_LISTLINE_MAXPARTS_WINNT+1],linetmp[MAX_PATHNAMELEN*2+8];

 pds_strcpy(linetmp,listline);

 if(drvftp_str_listline_slice(linetmp,&parts[0],DRVFTP_LISTLINE_MAXPARTS_WINNT)<DRVFTP_LISTLINE_MAXPARTS_WINNT)
  return 0;

 if((parts[0][2]!='-') || (parts[0][5]!='-') || (parts[1][2]!=':'))
  return 0;

 ffblk->fdate.month=pds_atol(&parts[0][0]);
 ffblk->fdate.day  =pds_atol(&parts[0][3]);
 ffblk->fdate.year =pds_atol(&parts[0][6]);
 if(!ffblk->fdate.month || (ffblk->fdate.month>12) || !ffblk->fdate.day || (ffblk->fdate.year>99))
  return 0;
 if(ffblk->fdate.year>=80)
  ffblk->fdate.year-=80; // 1980 -> 0  (+1980)
 else
  ffblk->fdate.year+=20; // 2000 -> 20 (+1980)

 ffblk->fdate.hours=pds_atol(&parts[1][0]);
 ffblk->fdate.minutes=pds_atol(&parts[1][3]);
 if(pds_strnicmp(&parts[1][5],"PM",2)==0)
  ffblk->fdate.hours+=12;

 if(pds_stricmp(parts[2],"<DIR>")==0)
  funcbit_enable(ffblk->attrib,_A_SUBDIR);
 else
#ifdef MPXPLAY_FSIZE64
  ffblk->size=pds_atoi64(parts[2]);
#else
  ffblk->size=pds_atol(parts[2]);
#endif

 pds_strncpy(ffblk->name,parts[3],sizeof(ffblk->name)-1); // filename
 ffblk->name[sizeof(ffblk->name)-1]=0;

 return 1;
}

static unsigned int drvftp_str_listline_to_direntry_unix(char *listline,struct pds_find_t *ffblk)
{
 unsigned int i,m,partnum;
 char *lp,*end,*parts[DRVFTP_LISTLINE_MAXPARTS_UNIX+1],linetmp[MAX_PATHNAMELEN*2+8];

 pds_strcpy(linetmp,listline);

 partnum=drvftp_str_listline_slice(linetmp,&parts[0],DRVFTP_LISTLINE_MAXPARTS_UNIX-1);
 if(partnum<(DRVFTP_LISTLINE_MAXPARTS_UNIX-1))
  return 0;

 if(parts[0][0]=='d')
  funcbit_enable(ffblk->attrib,_A_SUBDIR);
 //else if(parts[0][0]!='-') // ???
 // return 0;          //
 if(parts[0][2]!='w')
  funcbit_enable(ffblk->attrib,_A_RDONLY);

 for(m=4;m<=5;m++){
  i=0;
  do{
   if(pds_stricmp(parts[m],strMon[i])==0){
    ffblk->fdate.month=i+1;
    break;
   }
   i++;
  }while(strMon[i]);
  if(ffblk->fdate.month)
   break;
 }
 if(!ffblk->fdate.month)
  return 0;

 if(m==5)
  drvftp_str_listline_slice(parts[m+2],&parts[m+2],2);

#ifdef MPXPLAY_FSIZE64
 ffblk->size=pds_atoi64(parts[m-1]);
#else
 ffblk->size=pds_atol(parts[m-1]);
#endif
 ffblk->fdate.day=pds_atol(parts[m+1]);

 if(parts[m+2][2]==':'){ // time of file (hh:mm) in current year
  ffblk->fdate.hours=pds_atol(parts[m+2]);
  ffblk->fdate.minutes=pds_atol(&parts[m+2][3]);
  ffblk->fdate.year=(pds_getdate()>>16)-1980;
 }else{       // year of file
  i=pds_atol(parts[m+2]);
  if(i>=1980 && i<=9999)
   i-=1980;
  ffblk->fdate.year=i;
 }

 lp=parts[m+3];
 end=pds_strstr(lp," ->"); // link
 if(end)
  *end=0;

 while(*lp==' ') // skip spaces
  lp++;
 pds_strncpy(ffblk->name,lp,sizeof(ffblk->name)-1); // filename
 ffblk->name[sizeof(ffblk->name)-1]=0;
 return 1;
}

// !!! date is GMT! (correct it)
static unsigned int drvftp_str_mlsdline_to_direntry(char *listline,struct pds_find_t *ffblk)
{
 unsigned int year,month,day,hour,minute,second;
 char *end;

 do{
  char *data,*next;
  next=pds_strchr(listline,';');
  if(!next)
   break;
  *next++=0;
  data=pds_strchr(listline,'=');
  if(data){
   *data++=0;
   if(pds_stricmp(listline,"type")==0){ // dir or file
    if(pds_stricmp(data,"dir")==0)
     funcbit_enable(ffblk->attrib,_A_SUBDIR);
   }else if(pds_stricmp(listline,"modify")==0){ // !!! date in GMT (need to convert to local time)
    year=month=day=hour=minute=second=0;
    sscanf(data,"%4d%2d%2d%2d%2d%2d",&year,&month,&day,&hour,&minute,&second);
    if(year>=1980 && year<=9999)
     year-=1980;
    ffblk->fdate.year=year;
    ffblk->fdate.month=month;
    ffblk->fdate.day=day;
    ffblk->fdate.hours=hour;
    ffblk->fdate.minutes=minute;
    ffblk->fdate.twosecs=second/2;
   }else if(pds_stricmp(listline,"size")==0){ // filesize
#ifdef MPXPLAY_FSIZE64
    ffblk->size=pds_atoi64(data);
#else
    ffblk->size=pds_atol(data);
#endif
   }
  }
  listline=next;
 }while(1);

 if(!ffblk->fdate.month)
  return 0;

 end=pds_strstr(listline," ->"); // link
 if(end)
  *end=0;

 while(*listline==' ') // skip spaces
  listline++;
 pds_strncpy(ffblk->name,listline,sizeof(ffblk->name)-1); // filename
 ffblk->name[sizeof(ffblk->name)-1]=0;
 return 1;
}

static unsigned int ftpdrive_findfirst(void *drivehand_data,char *pathname,unsigned int attrib,struct pds_find_t *ffblk)
{
 struct ftpdrive_info_s *ftpi=drivehand_data;
 struct tcpcomon_cached_directory_info_s *diri;
 struct ftpdrive_filefind_s *ff_data;
 struct ftpdrive_socket_info_s socketinfo_ff;
 unsigned int retcode=1,datapos=0;//,firstread=1;
 char *fn,remotepath[MAX_PATHNAMELEN];
 char remotename[MAX_PATHNAMELEN],listline[MAX_PATHNAMELEN*2];
#ifdef MPXPLAY_DRVFTP_DEBUGFILE
 char sout[MAX_PATHNAMELEN];
#endif

 pds_memset((char *)(&socketinfo_ff),0,sizeof(socketinfo_ff));

 ff_data=(struct ftpdrive_filefind_s *)malloc(sizeof(*ff_data));
 if(!ff_data)
  return retcode;

 tcpcomon_str_localname_to_remote(remotename,pathname,sizeof(remotename));
 fn=tcpcomon_str_getpath_from_fullname(remotepath,remotename);
 if(fn)
  pds_strcpy(ff_data->searchfilemask,fn);
 else // should not happen
  pds_strcpy(ff_data->searchfilemask,PDS_DIRECTORY_ALLFILE_STR);

 diri=tcpcomon_dircache_dir_searchby_name(&ftpi->cdrvi,remotepath);
 if(!diri){
  ftpdrive_close_and_lock_filehand(ftpi);
  if(drvftp_cwd(ftpi,remotepath)!=0)
   goto err_out_ff;
  drvftp_dataconn_open(ftpi,NULL,((ftpi->server_features&DRVFTP_FEATURE_MLSD)? "MLSD":"LIST"),remotepath,&socketinfo_ff,DRVFTP_DATATYPE_ASCII);
  if(!mpxplay_tcpcommon_socket_check(&socketinfo_ff))
   goto err_out_ff;
  diri=tcpcomon_dircache_dir_realloc(&ftpi->cdrvi,diri,remotepath);
  if(!diri)
   goto err_out_ff;
  ffblk->name[0]=0;
  do{
   struct tcpcomon_cached_direntry_info_s *ed;
   long bytes_read,linelen=0;
   if(datapos){
    char *r,*end=pds_strchr(listline,'\n');
    if(end){
     *end++=0;
     r=pds_strchr(listline,'\r');
     if(r)
      *r=0;
     linelen=end-&listline[0];
     pds_memset(ffblk,0,sizeof(*ffblk));
     if(ftpi->server_features&DRVFTP_FEATURE_MLSD)
      drvftp_str_mlsdline_to_direntry(listline,ffblk);
     else if(!drvftp_str_listline_to_direntry_winnt(listline,ffblk))
      drvftp_str_listline_to_direntry_unix(listline,ffblk);
#ifdef MPXPLAY_DRVFTP_DEBUGFILE
     sprintf(sout,"c:\"%s\" dp:%d ln:%d",listline,datapos,linelen);
     drvftp_message_write_error(sout);
#endif
     pds_strcpy(listline,end);
     datapos-=linelen;
     if(!ffblk->name[0])
      continue;
     ed=tcpcomon_dircache_entry_alloc(diri,ffblk->name);
     if(!ed)
      break;
     ed->attrib=ffblk->attrib;
     ed->filesize=ffblk->size;
     pds_memcpy(&ed->fdate,&ffblk->fdate,sizeof(ed->fdate));
     continue;
    }
   }
   if(datapos>=(sizeof(listline)-1))
    datapos=0;
   bytes_read=drvftp_dataconn_read(ftpi,&socketinfo_ff,&listline[datapos],sizeof(listline)-1-datapos,0,DRVFTP_DEFAULT_TIMEOUTMS_RESPONSE);
   //bytes_read=drvftp_dataconn_read(ftpi,&socketinfo_ff,&listline[datapos],sizeof(listline)-1-datapos,0,((datapos || firstread)? DRVFTP_DEFAULT_TIMEOUTMS_RESPONSE:DRVFTP_DEFAULT_TIMEOUTMS_EOF)); // !!!
   if(bytes_read<0)
    break;
   datapos+=bytes_read;
   if(!datapos)
    break;
   listline[datapos]=0;
   //firstread=0;
  }while(1);
 }

 if(!diri->entrydatas || !diri->cached_entries_num)
  goto err_out_ff;
 ff_data->entrynum_curr=0;
 ff_data->entrynum_end=diri->cached_entries_num;
 ff_data->entry=diri->entrydatas;
 ffblk->ff_data=ff_data;

 if(diskdriv_ftpdrive_findnext(ftpi,ffblk))
  goto err_out_ff;

 retcode=0;
 goto end_ff;

err_out_ff:
 if(ff_data)
  free(ff_data);
 ffblk->ff_data=NULL;
end_ff:
 drvftp_dataconn_close(ftpi,&socketinfo_ff);
 ftpdrive_unlock_filehand(ftpi);
 return retcode;
}

unsigned int diskdriv_ftpdrive_findnext(void *drivehand_data,struct pds_find_t *ffblk)
{
 struct ftpdrive_filefind_s *ff_data=ffblk->ff_data;
 unsigned int retcode=1;
 if(!ff_data)
  return retcode;
 do{
  if(ff_data->entrynum_curr>=ff_data->entrynum_end)
   break;
  if(ff_data->entry->filename && pds_utf8_filename_wildcard_cmp(ff_data->entry->filename,ff_data->searchfilemask)){
   tcpcomon_dircache_entry_copyto_ffblk(ffblk,ff_data->entry);
   retcode=0;
  }
  ff_data->entrynum_curr++;
  ff_data->entry++;
 }while(retcode);
 return retcode;
}

void diskdriv_ftpdrive_findclose(void *drivehand_data,struct pds_find_t *ffblk)
{
 if(ffblk->ff_data){
  free(ffblk->ff_data);
  ffblk->ff_data=NULL;
 }
}

static unsigned int ftpdrive_checkdir(void *drivehand_data,char *dirname)
{
 struct ftpdrive_info_s *ftpi=drivehand_data;
 struct tcpcomon_cached_directory_info_s *diri;
 struct tcpcomon_cached_direntry_info_s *ed;
 char remotename[MAX_PATHNAMELEN];
 tcpcomon_str_localname_to_remote(remotename,dirname,sizeof(remotename));
 if(pds_stricmp(remotename,ftpi->currremotedir_real)==0)
  return 1;
 diri=tcpcomon_dircache_dir_searchby_name(&ftpi->cdrvi,remotename);
 if(diri)
  return 1;
 ed=tcpcomon_dircache_entry_searchby_fullname(&ftpi->cdrvi,remotename);
 if(ed){
  if(funcbit_test(ed->attrib,_A_SUBDIR))
   return 1;
  return 0;
 }
 if(drvftp_cwd(ftpi,remotename)==0)
  return 1;
 return 0;
}

static unsigned int drvftp_getcurrdir_real(struct ftpdrive_info_s *ftpi,unsigned int from_sc)
{
 unsigned int respcode,retcode=0,buflen=sizeof(ftpi->currremotedir_real);
 char *remotepath=alloca(buflen+1);
 if(!remotepath)
  return retcode;
 *remotepath=0;
 if(from_sc)
  respcode=drvftp_cmdctrl_send_command_get_response(ftpi,&ftpi->socket_info_session,"PWD",remotepath,buflen,DRVFTP_RESPCNTR_NONE,DRVFTP_RESPCODE_CMD_PWD_OK);
 else{
  ftpdrive_close_and_lock_filehand(ftpi);
  respcode=drvftp_cmdctrl_arc_send_command_get_response(ftpi,&ftpi->socket_info_session,"PWD",remotepath,buflen,DRVFTP_RESPCNTR_NONE,DRVFTP_RESPCODE_CMD_PWD_OK);
 }
 if(respcode==DRVFTP_RESPCODE_CMD_PWD_OK){
  char *s=pds_strchr(remotepath,'\"'); // search for "dirname"
  if(s){
   pds_strcpy(remotepath,s+1);
   s=pds_strchr(remotepath,'\"');
   if(s)
    *s=0;
  }
  pds_strcpy(ftpi->currremotedir_real,remotepath);
  retcode=1;
 }
 if(!from_sc)
  ftpdrive_unlock_filehand(ftpi);
 return retcode;
}

static char *ftpdrive_getcwd(void *drivehand_data,char *localpathbuf,unsigned int buflen)
{
 struct ftpdrive_info_s *ftpi=drivehand_data;
 *localpathbuf=0;
 if(ftpi->currremotedir_selected[0])
  tcpcomon_str_remotename_to_local(localpathbuf,ftpi->currremotedir_selected,buflen);
 else{
  if(drvftp_getcurrdir_real(ftpi,0)){
   pds_strcpy(ftpi->currremotedir_selected,ftpi->currremotedir_real);
   tcpcomon_str_remotename_to_local(localpathbuf,ftpi->currremotedir_real,buflen);
  }
 }
 return localpathbuf;
}

static int drvftp_cwd(struct ftpdrive_info_s *ftpi,char *remotename)
{
 int retcode=-1;
 char command[MAX_PATHNAMELEN+8];
 if(pds_stricmp(remotename,ftpi->currremotedir_real)==0)
  retcode=0;
 else{
  ftpdrive_close_and_lock_filehand(ftpi);
  snprintf(command,sizeof(command),"CWD %s",remotename);
  if(drvftp_cmdctrl_arc_send_command_check_respcode(ftpi,&ftpi->socket_info_session,command,DRVFTP_RESPCODE_DIRCOMMAND_OK)){
   pds_strcpy(ftpi->currremotedir_real,remotename);
   retcode=0;
  }
  ftpdrive_unlock_filehand(ftpi);
 }
 return retcode;
}

static int ftpdrive_chdir(void *drivehand_data,char *path)
{
 struct ftpdrive_info_s *ftpi=drivehand_data;
 struct tcpcomon_cached_directory_info_s *diri;
 int retcode=-1;
 char remotename[MAX_PATHNAMELEN];
 ftpi->connection_retry=DRVFTP_DEFAULT_TIMEOUTRETRY_SESSION;
 tcpcomon_str_localname_to_remote(remotename,path,sizeof(remotename));
 diri=tcpcomon_dircache_dir_searchby_name(&ftpi->cdrvi,remotename);
 if(diri)
  retcode=0;
 else
  retcode=drvftp_cwd(ftpi,remotename);
 if(retcode==0)
  pds_strcpy(ftpi->currremotedir_selected,remotename);
 else
  drvftp_message_write_error(ftpi->lastresptext);
 return retcode;
}

static int ftpdrive_mkdir(void *drivehand_data,char *path)
{
 struct ftpdrive_info_s *ftpi=drivehand_data;
 int retcode=-1;
 char remotename[MAX_PATHNAMELEN],command[MAX_PATHNAMELEN+8];
 ftpi->connection_retry=DRVFTP_DEFAULT_TIMEOUTRETRY_SESSION;
 ftpdrive_close_and_lock_filehand(ftpi);
 tcpcomon_str_localname_to_remote(remotename,path,sizeof(remotename));
 snprintf(command,sizeof(command),"MKD %s",remotename);
 if(drvftp_cmdctrl_arc_send_command_get_success(ftpi,&ftpi->socket_info_session,command)){
  struct tcpcomon_cached_direntry_info_s *edn;
  edn=tcpcomon_dircache_entry_addby_fullname(&ftpi->cdrvi,remotename);
  if(edn)
   edn->attrib=_A_SUBDIR;
  retcode=0;
 }else
  drvftp_message_write_error(ftpi->lastresptext);
 ftpdrive_unlock_filehand(ftpi);
 return retcode;
}

static int ftpdrive_rmdir(void *drivehand_data,char *path)
{
 struct ftpdrive_info_s *ftpi=drivehand_data;
 int retcode=-1;
 char remotename[MAX_PATHNAMELEN],command[MAX_PATHNAMELEN+8];
 ftpi->connection_retry=DRVFTP_DEFAULT_TIMEOUTRETRY_SESSION;
 ftpdrive_close_and_lock_filehand(ftpi);
 tcpcomon_str_localname_to_remote(remotename,path,sizeof(remotename));
 if(pds_stricmp(remotename,ftpi->currremotedir_real)==0){
  if(!drvftp_cmdctrl_arc_send_command_get_success(ftpi,&ftpi->socket_info_session,"CDUP"))
   goto err_out_rmdir;
  drvftp_getcurrdir_real(ftpi,0);
 }
 snprintf(command,sizeof(command),"RMD %s",remotename);
 if(drvftp_cmdctrl_arc_send_command_get_success(ftpi,&ftpi->socket_info_session,command)){
  struct tcpcomon_cached_directory_info_s *diri;
  tcpcomon_dircache_entry_removeby_fullname(&ftpi->cdrvi,remotename);
  diri=tcpcomon_dircache_dir_searchby_name(&ftpi->cdrvi,remotename);
  if(diri)
   tcpcomon_dircache_dir_dealloc(diri);
  retcode=0;
 }
err_out_rmdir:
 ftpdrive_unlock_filehand(ftpi);
 if(retcode!=0)
  drvftp_message_write_error(ftpi->lastresptext);
 return retcode;
}

static int ftpdrive_rename(void *drivehand_data,char *oldfilename,char *newfilename)
{
 struct ftpdrive_info_s *ftpi=drivehand_data;
 int retcode=-1;
 char oldremotename[MAX_PATHNAMELEN],newremotename[MAX_PATHNAMELEN],command[MAX_PATHNAMELEN+8];
 ftpi->connection_retry=DRVFTP_DEFAULT_TIMEOUTRETRY_SESSION;
 ftpdrive_close_and_lock_filehand(ftpi);
 tcpcomon_str_localname_to_remote(oldremotename,oldfilename,sizeof(oldremotename));
 snprintf(command,sizeof(command),"RNFR %s",oldremotename);
 if(drvftp_cmdctrl_arc_send_command_get_success(ftpi,&ftpi->socket_info_session,command)){
  tcpcomon_str_localname_to_remote(newremotename,newfilename,sizeof(newremotename));
  snprintf(command,sizeof(command),"RNTO %s",newremotename);
  if(drvftp_cmdctrl_arc_send_command_get_success(ftpi,&ftpi->socket_info_session,command)){
   struct tcpcomon_cached_direntry_info_s *edo,*edn;
   edo=tcpcomon_dircache_entry_removeby_fullname(&ftpi->cdrvi,oldremotename);
   edn=tcpcomon_dircache_entry_addby_fullname(&ftpi->cdrvi,newremotename);
   if(edo && edn){
    edn->attrib=edo->attrib;
    edn->filesize=edo->filesize;
    pds_memcpy(&edn->fdate,&edo->fdate,sizeof(edo->fdate));
   }
   retcode=0;
  }
 }
 ftpdrive_unlock_filehand(ftpi);
 if(retcode!=0)
  drvftp_message_write_error(ftpi->lastresptext);
 return retcode;
}

static int ftpdrive_unlink(void *drivehand_data,char *filename)
{
 struct ftpdrive_info_s *ftpi=drivehand_data;
 int retcode=-1;
 char remotename[MAX_PATHNAMELEN],command[MAX_PATHNAMELEN+8];
 ftpi->connection_retry=DRVFTP_DEFAULT_TIMEOUTRETRY_SESSION;
 ftpdrive_close_and_lock_filehand(ftpi);
 tcpcomon_str_localname_to_remote(remotename,filename,sizeof(remotename));
 snprintf(command,sizeof(command),"DELE %s",remotename);
 if(drvftp_cmdctrl_arc_send_command_get_success(ftpi,&ftpi->socket_info_session,command)){
  tcpcomon_dircache_entry_removeby_fullname(&ftpi->cdrvi,remotename);
  retcode=0;
 }else
  drvftp_message_write_error(ftpi->lastresptext);
 ftpdrive_unlock_filehand(ftpi);
 return retcode;
}

//---------------------------------------------------------------------
// file local routines

static long drvftp_openid_num;

static struct ftpdrive_info_s *ftpdrive_file_session_connect(void *drivehand_data,struct ftpfile_info_s *ftfi)
{
 struct ftpdrive_info_s *ftpi=NULL;
 int i;
 char *fn,path[MAX_PATHNAMELEN];

 if(drivehand_data){ // file is connected to an opened session
  ftpi=drivehand_data;
  ftfi->ftpi_ftpdrives_ptr=ftpi->ftpdrive_info_ptr;
  pds_memcpy(&ftfi->ftpi_infos,ftpi,sizeof(ftfi->ftpi_infos));
 }else{              // search or open a session for the file
  if(ftfi->singleftpfilename[0]){ // session has opened by a single ftp:// filename
   tcpcomon_str_localname_to_remote(path,ftfi->singleftpfilename,sizeof(path));
   fn=pds_strrchr(path,'/');
   if(!fn)
    return NULL;
   *fn++=0; // cut filename from path
   if(!ftpdrive_extract_logininfos_from_path(&ftfi->ftpi_infos,path))
    return NULL;
   i= pds_strcpy(&ftfi->remotefilename[0],ftfi->ftpi_infos.currremotedir_selected);
   i+=pds_strcpy(&ftfi->remotefilename[i],PDS_DIRECTORY_SEPARATOR_STR_UNXFTP);
      pds_strcat(&ftfi->remotefilename[i],fn); // assemble again fullname (without drive letter)
  }
  ftfi->ftpi_ftpdrives_ptr=NULL;
  for(i=0;i<(DRVFTP_MAX_VIRTUAL_DRIVES+1);i++){ // search for an existent session by login infos
   ftpi=ftpdrives_info_ptrs[i];
   if(ftpi && ftpdrive_compare_logininfos(&ftfi->ftpi_infos,ftpi)){
    ftfi->ftpi_ftpdrives_ptr=&ftpdrives_info_ptrs[i];
    pds_strcpy(ftpi->currremotedir_selected,ftfi->ftpi_infos.currremotedir_selected);
    break;
   }
  }
  if(!ftfi->ftpi_ftpdrives_ptr && ftfi->singleftpfilename[0]){ // open a new (hidden) session for the single ftp:// file
   if(ftpdrives_info_ptrs[DRVFTP_VIRTUALDRV_FTPFILE])
    ftpdrive_drive_unmount(ftpdrives_info_ptrs[DRVFTP_VIRTUALDRV_FTPFILE]); // close it if it's open (but has changed)
   ftpi=ftpdrive_drive_connect(path);
   if(!ftpi)
    return ftpi;
   funcbit_smp_pointer_put(ftpdrives_info_ptrs[DRVFTP_VIRTUALDRV_FTPFILE],ftpi);
   funcbit_smp_pointer_put(ftpi->ftpdrive_info_ptr,&ftpdrives_info_ptrs[DRVFTP_VIRTUALDRV_FTPFILE]);
   ftfi->ftpi_ftpdrives_ptr=ftpi->ftpdrive_info_ptr;
  }
 }
 return ftpi;
}

static unsigned int ftpdrive_file_data_connect(struct ftpfile_info_s *ftfi)
{
 struct ftpdrive_info_s *ftpi=(ftfi->ftpi_ftpdrives_ptr)? *(ftfi->ftpi_ftpdrives_ptr):NULL;
 unsigned int datatype;

 if(!ftpi)
  return 0;
 if(ftpi->file_open_id_num==DRVFTP_FILEOPENID_BUSY) // !!! smp (multithread) (-xr)
  return 0;
 if(!funcbit_test(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_WRITE))
  if(ftfi->filesize && (ftfi->filepos>=ftfi->filesize)) // eof
   return 0;

 drvftp_dataconn_close(ftpi,&ftpi->socket_info_filehand);
 funcbit_smp_disable(ftfi->flags,DRVFTP_FTPFILE_FLAG_SEEK);
 ftfi->timeout_at_read=0;

 if(funcbit_test(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_TEXT))
  datatype=DRVFTP_DATATYPE_ASCII;
 else
  datatype=DRVFTP_DATATYPE_BINARY;

 if(funcbit_test(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_WRITE)){
  funcbit_enable(ftpi->socket_info_filehand.flags,DRVFTP_SOCKINFO_FLAG_DIRECTION_SEND);
  drvftp_dataconn_open(ftpi,ftfi,"STOR",ftfi->remotefilename,&ftpi->socket_info_filehand,datatype);
 }else{
  funcbit_disable(ftpi->socket_info_filehand.flags,DRVFTP_SOCKINFO_FLAG_DIRECTION_SEND);
  funcbit_smp_value_put(ftpi->socket_bufsize,ftfi->file_bufsize);
  drvftp_dataconn_open(ftpi,ftfi,"RETR",ftfi->remotefilename,&ftpi->socket_info_filehand,datatype);
 }
 funcbit_smp_value_put(ftpi->file_open_id_num,ftfi->open_id_num);
 if(!mpxplay_tcpcommon_socket_check(&ftpi->socket_info_filehand))
  return 0;
 return 1;
}

static unsigned int ftpdrive_file_sessiondata_reconnect(struct ftpfile_info_s *ftfi)
{
 struct ftpdrive_info_s *ftpi=(ftfi->ftpi_ftpdrives_ptr)? *(ftfi->ftpi_ftpdrives_ptr):NULL;
 if(!ftpi || (ftfi->connect_id_num!=ftpi->connect_id_num) || !ftpdrive_compare_logininfos(&ftfi->ftpi_infos,ftpi)){
  ftpi=ftpdrive_file_session_connect(NULL,ftfi);
  if(!ftpi)
   return 0;
  ftfi->connect_id_num=ftpi->connect_id_num;
 }
 if((ftfi->flags&DRVFTP_FTPFILE_FLAG_SEEK) || (ftpi->file_open_id_num!=ftfi->open_id_num))
  if(!ftpdrive_file_data_connect(ftfi))
   return 0;
 return 1;
}

//----------------------------------
// file api
static void ftpdrive_file_close(void *filehand_data);

static unsigned int ftpdrive_file_check(void *drivehand_data,char *filename)
{
 if(ftpdrive_drive_getlowfunc_by_name(filename))
  return 1;
 return 0;
}

static void *ftpdrive_file_open(void *drivehand_data,char *filename,unsigned long openmode)
{
 struct ftpdrive_info_s *ftpi;
 struct ftpfile_info_s *ftfi;

 ftfi=calloc(1,sizeof(*ftfi));
 if(!ftfi)
  return ftfi;

 if(drivehand_data)
  tcpcomon_str_localname_to_remote(ftfi->remotefilename,filename,sizeof(ftfi->remotefilename));
 else
  pds_strcpy(ftfi->singleftpfilename,filename); // single ftp:// file

 ftpi=ftpdrive_file_session_connect(drivehand_data,ftfi);
 if(!ftpi)
  goto err_out_open;

 funcbit_enable(ftfi->flags,DRVFTP_FTPFILE_FLAG_READWAIT);

 switch(openmode&(O_RDONLY|O_RDWR|O_WRONLY)){
  case O_RDONLY:funcbit_enable(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_READ);break;
  case O_WRONLY:funcbit_enable(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_WRITE);break;
  default:goto err_out_open; // !!! O_RDWR not supported by FTP commands (?)
 }
 if(openmode&O_CREAT)
  funcbit_enable(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_CREATE);
 //if(openmode&O_TEXT)
 // funcbit_enable(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_TEXT); // doesn't work (ftp server doesn't convert lf to cr/lf?)

 ftfi->connect_id_num=ftpi->connect_id_num;
 if(drvftp_openid_num>=0x7fffffff)
  drvftp_openid_num=0;
 ftfi->open_id_num=++drvftp_openid_num; // !!! begins with 1

 if(!ftpdrive_file_data_connect(ftfi))
  goto err_out_open;

 return ftfi;

err_out_open:
 ftpdrive_file_close(ftfi);
 return NULL;
}

static void ftpdrive_file_close(void *filehand_data)
{
 struct ftpfile_info_s *ftfi=filehand_data;
 struct ftpdrive_info_s *ftpi;
 if(ftfi){
  ftpi=(ftfi->ftpi_ftpdrives_ptr)? *(ftfi->ftpi_ftpdrives_ptr):NULL;
  if(ftpi){
   if(ftpi->file_open_id_num==ftfi->open_id_num)
    drvftp_dataconn_close(ftpi,&ftpi->socket_info_filehand);
   if(funcbit_test(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_WRITE) && ftfi->filesize && ftpdrive_compare_logininfos(ftpi,&ftfi->ftpi_infos)){
    struct tcpcomon_cached_direntry_info_s *ed;
    ed=tcpcomon_dircache_entry_searchby_fullname(&ftpi->cdrvi,ftfi->remotefilename);
    if(!ed)
     ed=tcpcomon_dircache_entry_addby_fullname(&ftpi->cdrvi,ftfi->remotefilename);
    if(ed && (ed->filesize<ftfi->filesize))
     ed->filesize=ftfi->filesize;
   }
  }
  free(ftfi);
 }
}

static long ftpdrive_file_read(void *filehand_data,char *ptr,unsigned int num)
{
 struct ftpfile_info_s *ftfi=filehand_data;
 struct ftpdrive_info_s *ftpi;
 long bytes_read=0;
 if(!funcbit_test(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_READ))
  return bytes_read;
 if(!ftpdrive_file_sessiondata_reconnect(ftfi))
  return MPXPLAY_ERROR_FILEHAND_CANTREAD;
 ftpi=(ftfi->ftpi_ftpdrives_ptr)? *(ftfi->ftpi_ftpdrives_ptr):NULL;
 if(ftfi->filesize){
  if(ftfi->filepos>=ftfi->filesize)
   return bytes_read;
  if((ftfi->filepos+num)>=ftfi->filesize)
   num=ftfi->filesize-ftfi->filepos;
 }
 bytes_read=drvftp_dataconn_read(ftpi,&ftpi->socket_info_filehand,ptr,num,num,((funcbit_test(ftfi->flags,DRVFTP_FTPFILE_FLAG_READWAIT))? DRVFTP_DEFAULT_TIMEOUTMS_RESPONSE:0));
 if(bytes_read>0){
  funcbit_smp_filesize_put(ftfi->filepos,ftfi->filepos+bytes_read);
  ftfi->timeout_at_read=0;
 }else{ //data-reconnect at read-timeout
  if(ftpi->connection_retry && !funcbit_test(ftfi->flags,DRVFTP_FTPFILE_FLAG_READWAIT)){
   if(!ftfi->timeout_at_read && (bytes_read==0))
    ftfi->timeout_at_read=pds_gettimem()+DRVFTP_DEFAULT_TIMEOUTMS_READ;
   else if((bytes_read<0) || (pds_gettimem()>ftfi->timeout_at_read)){
    funcbit_enable(ftfi->flags,DRVFTP_FTPFILE_FLAG_SEEK);
    ftfi->timeout_at_read=0;
    drvftp_message_write_error("file connection lost, reconnect ...");
   }
  }else
   ftfi->timeout_at_read=0;
 }
 return bytes_read;
}

static long ftpdrive_file_write(void *filehand_data,char *ptr,unsigned int num)
{
 struct ftpfile_info_s *ftfi=filehand_data;
 struct ftpdrive_info_s *ftpi;
 long bytes_written=0;
 if(!funcbit_test(ftfi->opentype,DRVFTP_FTPFILE_OPENTYPE_WRITE))
  return bytes_written;
 if(!ftpdrive_file_sessiondata_reconnect(ftfi)) // ??? at write?
  return bytes_written;
 ftpi=(ftfi->ftpi_ftpdrives_ptr)? *(ftfi->ftpi_ftpdrives_ptr):NULL;
 bytes_written=drvftp_dataconn_write(ftpi,&ftpi->socket_info_filehand,ptr,num);
 if(bytes_written>0){
  funcbit_smp_filesize_put(ftfi->filepos,ftfi->filepos+bytes_written);
  if(ftfi->filesize<ftfi->filepos)
   funcbit_smp_filesize_put(ftfi->filesize,ftfi->filepos);
  funcbit_smp_enable(ftfi->flags,DRVFTP_FTPFILE_FLAG_WRITE);
 }
 return bytes_written;
}

static mpxp_filesize_t ftpdrive_file_tell(void *filehand_data)
{
 struct ftpfile_info_s *ftfi=filehand_data;
 return ftfi->filepos;
}

static mpxp_filesize_t ftpdrive_file_seek(void *filehand_data,mpxp_filesize_t pos,int fromwhere)
{
 struct ftpfile_info_s *ftfi=filehand_data;
 mpxp_filesize_t newfilepos;
 switch(fromwhere){
  case SEEK_CUR:newfilepos=ftfi->filepos+pos;break;
  case SEEK_END:newfilepos=ftfi->filesize+pos;break;
  case SEEK_SET:
        default:newfilepos=pos;break;
 }
 if((newfilepos!=ftfi->filepos)){
  funcbit_smp_enable(ftfi->flags,DRVFTP_FTPFILE_FLAG_SEEK);
  funcbit_smp_filesize_put(ftfi->filepos,newfilepos);
 }
 return ftfi->filepos;
}

static mpxp_filesize_t ftpdrive_file_length(void *filehand_data)
{
 struct ftpfile_info_s *ftfi=filehand_data;
 return ftfi->filesize;
}

static int ftpdrive_file_eof(void *filehand_data)
{
 struct ftpfile_info_s *ftfi=filehand_data;
 if(ftfi->filepos>=ftfi->filesize)
  return 1;
 return 0;
}

//------------------------------------------------------------------------

struct mpxplay_drivehand_func_s FTPDRIVE_drivehand_funcs={
 "FTPDRIVE",
 MPXPLAY_DRIVEHANDFUNC_INFOBIT_SLOWACCESS,    // infobits
 &ftpdrive_drive_config,
 &ftpdrive_drive_check,
 &ftpdrive_drive_mount,
 &ftpdrive_drive_unmount,
 &ftpdrive_findfirst,
 &diskdriv_ftpdrive_findnext,
 &diskdriv_ftpdrive_findclose,
 &ftpdrive_getcwd,
 &ftpdrive_chdir,
 &ftpdrive_mkdir,
 &ftpdrive_rmdir,
 &ftpdrive_rename,
 &ftpdrive_unlink,
 NULL,  // r15
 NULL,  // r16
 NULL,  // r17
 NULL,  // r18
 NULL,  // r19
 NULL,  // r20

 &ftpdrive_file_check,
 &ftpdrive_file_open,
 &ftpdrive_file_close,
 &ftpdrive_file_read,
 &ftpdrive_file_write,
 &ftpdrive_file_seek,
 &ftpdrive_file_tell,
 &ftpdrive_file_length,
 &ftpdrive_file_eof,
 NULL,  // file_chsize
 NULL   // r31
};

#else // MPXPLAY_LINK_TCPIP

struct mpxplay_drivehand_func_s FTPDRIVE_drivehand_funcs={
 "FTPDRIVE",0,
 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
 NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL
};

#endif
