#define TRUE 1
#endif
+#define RLOGIN_MAX_BACKLOG 4096
+
static Socket s = NULL;
+static int rlogin_bufsize;
static void rlogin_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);
+ int backlog = from_backend(0, buf, len);
+ sk_set_frozen(s, backlog > RLOGIN_MAX_BACKLOG);
}
static int rlogin_closing(Plug plug, char *error_msg, int error_code,
int calling_back)
{
- sk_close(s);
- s = NULL;
+ if (s) {
+ sk_close(s);
+ s = NULL;
+ }
if (error_msg) {
/* A socket error has occurred. */
- connection_fatal(error_msg);
+ logevent(error_msg);
+ connection_fatal("%s", error_msg);
} /* Otherwise, the remote side closed the connection normally. */
return 0;
}
}
firstbyte = 0;
}
- c_write(data, len);
+ if (len > 0)
+ c_write(data, len);
}
return 1;
}
+static void rlogin_sent(Plug plug, int bufsize)
+{
+ rlogin_bufsize = bufsize;
+}
+
/*
* Called to set up the rlogin connection.
*
* Also places the canonical host name into `realhost'. It must be
* freed by the caller.
*/
-static char *rlogin_init(char *host, int port, char **realhost)
+static char *rlogin_init(char *host, int port, char **realhost, int nodelay)
{
static struct plug_function_table fn_table = {
rlogin_closing,
- rlogin_receive
+ rlogin_receive,
+ rlogin_sent
}, *fn_table_ptr = &fn_table;
SockAddr addr;
/*
* Try to find host.
*/
+ {
+ char buf[200];
+ sprintf(buf, "Looking up host \"%.170s\"", host);
+ logevent(buf);
+ }
addr = sk_namelookup(host, realhost);
if ((err = sk_addr_error(addr)))
return err;
/*
* Open socket.
*/
- s = sk_new(addr, port, 1, 0, &fn_table_ptr);
+ {
+ char buf[200], addrbuf[100];
+ sk_getaddr(addr, addrbuf, 100);
+ sprintf(buf, "Connecting to %.100s port %d", addrbuf, port);
+ logevent(buf);
+ }
+ s = new_connection(addr, *realhost, port, 1, 0, nodelay, &fn_table_ptr);
if ((err = sk_socket_error(s)))
return err;
sk_write(s, "/", 1);
for (p = cfg.termspeed; isdigit(*p); p++);
sk_write(s, cfg.termspeed, p - cfg.termspeed);
- sk_write(s, &z, 1);
+ rlogin_bufsize = sk_write(s, &z, 1);
}
return NULL;
/*
* Called to send data down the rlogin connection.
*/
-static void rlogin_send(char *buf, int len)
+static int rlogin_send(char *buf, int len)
{
-
if (s == NULL)
- return;
+ return 0;
+
+ rlogin_bufsize = sk_write(s, buf, len);
- sk_write(s, buf, len);
+ return rlogin_bufsize;
+}
+
+/*
+ * Called to query the current socket sendability status.
+ */
+static int rlogin_sendbuffer(void)
+{
+ return rlogin_bufsize;
}
/*
{
char b[12] = { '\xFF', '\xFF', 0x73, 0x73, 0, 0, 0, 0, 0, 0, 0, 0 };
+ if (s == NULL)
+ return;
+
b[6] = cols >> 8;
b[7] = cols & 0xFF;
b[4] = rows >> 8;
b[5] = rows & 0xFF;
- sk_write(s, b, 12);
+ rlogin_bufsize = sk_write(s, b, 12);
return;
}
return 1;
}
+static void rlogin_unthrottle(int backlog)
+{
+ sk_set_frozen(s, backlog > RLOGIN_MAX_BACKLOG);
+}
+
static int rlogin_ldisc(int option)
{
return 0;
}
+static int rlogin_exitcode(void)
+{
+ /* If we ever implement RSH, we'll probably need to do this properly */
+ return 0;
+}
+
Backend rlogin_backend = {
rlogin_init,
rlogin_send,
+ rlogin_sendbuffer,
rlogin_size,
rlogin_special,
rlogin_socket,
+ rlogin_exitcode,
rlogin_sendok,
rlogin_ldisc,
+ rlogin_unthrottle,
1
};