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