play.c

接收Fax的程序

/*
** (c) 1992 Uwe C. Schroeder, Anwendungssysteme , Augsburg, Germany
**
** 
** Permission to use, copy, and modify this software and its
** documentation for non comercial  purpose is hereby granted 
** without fee, provided that
** the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation, and that the name of Uwe C. Schroeder not be used in
** advertising or publicity pertaining to distribution of the software without
** specific, written prior permission.  Uwe Schroeder makes no representations
** about the suitability of this software for any purpose.  It is provided
** "as is" without express or implied warranty.
** This software may not be sold or distributed with commercial products
** ( this includes distribution "for users convenience" ) without prior
** written permission by the author.
**
** UWE SCHROEDER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
** INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
** EVENT SHALL UWE SCHROEDER BE LIABLE FOR ANY SPECIAL, INDIRECT OR
** CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
** DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
** TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
** PERFORMANCE OF THIS SOFTWARE.
**
**
** This is a alpha release, which means, that there are still several
** known bugs.
**
** Please report bugs to:
**
**                     [e-mail]
**
*/

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <termio.h>
#include "vfax.h"

extern int local;
extern int fd;

play(fnam)
     char *fnam;
{
  int kbd, x, y;
  FILE *in;
  char msg[512];
  char cmd[20];
  char buf;
  char lookup;
  char k;
  unsigned long flen;


  if((in = fopen(fnam,"r")) == 0)
    {
      Debug(2,"play: open of %s failed\r\n",fnam);
      sprintf(msg,"%s/opfail.v",MSGDIR);
      if((in = fopen(msg,"r")) == 0)
	{
	  Debug(2,"play: open of %s failed\r\n",msg);
	  return;
	}
    }

  writecmd("AT+VTX");
  if(getret("CONNECT"))
    {
      k=100;
      while(!feof(in))
	{
	  if(k<=0) { /* check XON XOFF */
	  again:
	    if(read(fd,&lookup,1)<0){ k=100; continue;}
	    switch(lookup){
	    case DLE: 
	      /* there must be another char after DLE,
		 so block the read */
	      ttyread(&lookup,1);
	      switch(lookup){
	      case XOF:
		goto again;
	      case XON:
		k=100;
		continue;
	      default:
		Debug(1,"Got DLE %c\n",lookup);
		break;
	      }
	      break;
	    case XOF:
	      goto again;
	    case XON:
	      k=100;
	      continue;
	    default:
	      k=100;
	      continue;
	    }
	  }
	  k--;
	  buf=fgetc(in);
	  write ( fd, & buf, 1 ) ;
	}
    }
  writech(DLE);
  writech(ETX);
  getret("VCON");
  fclose(in);
}