git.distorted.org.uk Git - u/mdw/putty/blame_incremental

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Commit	Line	Data
	1	#include <windows.h>
	2	#include <stdio.h>
	3	#include <stdlib.h>
	4
	5	#include "putty.h"
	6
	7	#ifndef FALSE
	8	#define FALSE 0
	9	#endif
	10	#ifndef TRUE
	11	#define TRUE 1
	12	#endif
	13
	14	static Socket s = NULL;
	15
	16	static void raw_size(void);
	17
	18	static int sb_opt, sb_len;
	19	static char *sb_buf = NULL;
	20	static int sb_size = 0;
	21	#define SB_DELTA 1024
	22
	23	static void c_write (char *buf, int len) {
	24	from_backend(0, buf, len);
	25	}
	26
	27	static int raw_receive (Socket skt, int urgent, char *data, int len) {
	28	if (urgent==3) {
	29	/* A socket error has occurred. */
	30	sk_close(s);
	31	s = NULL;
	32	connection_fatal(data);
	33	len = 0;
	34	return 0;
	35	} else if (!len) {
	36	/* Connection has closed. */
	37	sk_close(s);
	38	s = NULL;
	39	return 0;
	40	}
	41	c_write(data, len);
	42	return 1;
	43	}
	44
	45	/*
	46	* Called to set up the raw connection.
	47	*
	48	* Returns an error message, or NULL on success.
	49	*
	50	* Also places the canonical host name into `realhost'.
	51	*/
	52	static char raw_init (char host, int port, char **realhost) {
	53	SockAddr addr;
	54	char *err;
	55
	56	/*
	57	* Try to find host.
	58	*/
	59	addr = sk_namelookup(host, realhost);
	60	if ( (err = sk_addr_error(addr)) )
	61	return err;
	62
	63	if (port < 0)
	64	port = 23; /* default telnet port */
	65
	66	/*
	67	* Open socket.
	68	*/
	69	s = sk_new(addr, port, 0, 1, raw_receive);
	70	if ( (err = sk_socket_error(s)) )
	71	return err;
	72
	73	sk_addr_free(addr);
	74
	75	return NULL;
	76	}
	77
	78	/*
	79	* Called to send data down the raw connection.
	80	*/
	81	static void raw_send (char *buf, int len) {
	82
	83	if (s == NULL)
	84	return;
	85
	86	sk_write(s, buf, len);
	87	}
	88
	89	/*
	90	* Called to set the size of the window
	91	*/
	92	static void raw_size(void) {
	93	/* Do nothing! */
	94	return;
	95	}
	96
	97	/*
	98	* Send raw special codes.
	99	*/
	100	static void raw_special (Telnet_Special code) {
	101	/* Do nothing! */
	102	return;
	103	}
	104
	105	static Socket raw_socket(void) { return s; }
	106
	107	static int raw_sendok(void) { return 1; }
	108
	109	static int raw_ldisc(int option) {
	110	if (option == LD_EDIT \|\| option == LD_ECHO)
	111	return 1;
	112	return 0;
	113	}
	114
	115	Backend raw_backend = {
	116	raw_init,
	117	raw_send,
	118	raw_size,
	119	raw_special,
	120	raw_socket,
	121	raw_sendok,
	122	raw_ldisc,
	123	1
	124	};