update netcat 1.13 to 1.14.txt

update netcat 1.13 to 1.14

modify by chenghao0511##gmail.com 2013/05/03

why?

after:
remote:nc -lp 55 < doexec.c
local:nc ip 55 > test.c

remote:nc -lp 55 < doexec.c
_         [can not type in]
local:nc ip 55 > test.c
_         [can type in,remote out]

you can use:
nc -lp 66 < doexec.c
nc -C 127.0.0.1 66 >test.c
or:
nc -lp 66 > test1.c
nc -C 127.0.0.1 66 < doexec.c

how to update:

unsigned int o_wait = 0;
USHORT o_zero = 0;
+USHORT o_connect = 0;


  rr = recv (fd, bigbuf_net, BIGSIZ, 0);

	if (rr <= 0) {

Debug (("recv rr <= 0 "))
+	  if (_isatty( 1 ) == 0) 		/* > recv = 0,fix by chenghao0511#gmail.com*/
+	    exit(0);
	  FD_CLR (fd, ding1);		/* net closed, we'll finish up... */


		rr = read (0, bigbuf_in, BIGSIZ);
		if (rr <= 0) {			/* at end, or fukt, or ... */
			close (0);

+  			shutdown(fd, 0x02);  	/* by chenghao0511 */
+  			closesocket (fd);
+			if(o_connect)
+			  exit(0);
+  			return (0);
		} else {
			rzleft = rr;
			zp = bigbuf_in;

	        case 'C':			/* connect then cycle back to start instead of exiting */
+	o_connect = 1;
  	cycle = 1;
	  break;

source code:
https://github.com/chenghao11/netcat-1.13/wiki/update-netcat-1.12-to-1.13
http://code.google.com/p/netcat113/
https://sourceforge.net/p/netcat113/
download:
https://www.box.com/s/vmrli1vjt5dh4j0bjarr
https://docs.google.com/file/d/0B0LORKrOvywuOUdvSGo4ZHNEb28/edit?usp=sharing