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#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include "putty.h"
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
static Socket s = NULL;
static void raw_size(void);
static int sb_opt, sb_len;
static char *sb_buf = NULL;
static int sb_size = 0;
#define SB_DELTA 1024
static void c_write (char *buf, int len) {
from_backend(0, buf, len);
}
static int raw_receive (Socket skt, int urgent, char *data, int len) {
if (urgent==3) {
/* A socket error has occurred. */
sk_close(s);
s = NULL;
connection_fatal(data);
len = 0;
return 0;
} else if (!len) {
/* Connection has closed. */
sk_close(s);
s = NULL;
return 0;
}
c_write(data, len);
return 1;
}
/*
* Called to set up the raw connection.
*
* Returns an error message, or NULL on success.
*
* Also places the canonical host name into `realhost'.
*/
static char *raw_init (char *host, int port, char **realhost) {
SockAddr addr;
char *err;
/*
* Try to find host.
*/
addr = sk_namelookup(host, realhost);
if ( (err = sk_addr_error(addr)) )
return err;
if (port < 0)
port = 23; /* default telnet port */
/*
* Open socket.
*/
s = sk_new(addr, port, 0, 1, raw_receive);
if ( (err = sk_socket_error(s)) )
return err;
sk_addr_free(addr);
return NULL;
}
/*
* Called to send data down the raw connection.
*/
static void raw_send (char *buf, int len) {
if (s == NULL)
return;
sk_write(s, buf, len);
}
/*
* Called to set the size of the window
*/
static void raw_size(void) {
/* Do nothing! */
return;
}
/*
* Send raw special codes.
*/
static void raw_special (Telnet_Special code) {
/* Do nothing! */
return;
}
static Socket raw_socket(void) { return s; }
static int raw_sendok(void) { return 1; }
static int raw_ldisc(int option) {
if (option == LD_EDIT || option == LD_ECHO)
return 1;
return 0;
}
Backend raw_backend = {
raw_init,
raw_send,
raw_size,
raw_special,
raw_socket,
raw_sendok,
raw_ldisc,
1
};
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