from_backend() should always be called with len > 0. Only rlogin

[u/mdw/putty] / rlogin.c

diff --git a/rlogin.c b/rlogin.c
index 97699ae..a80d12e 100644 (file)
--- a/rlogin.c
+++ b/rlogin.c
@@ -68,7 +68,8 @@ static int rlogin_receive(Plug plug, int urgent, char *data, int len)
            }
            firstbyte = 0;
        }
-       c_write(data, len);
+       if (len > 0)
+            c_write(data, len);
     }
     return 1;
 }
@@ -217,6 +218,12 @@ 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,
@@ -224,6 +231,7 @@ Backend rlogin_backend = {
     rlogin_size,
     rlogin_special,
     rlogin_socket,
+    rlogin_exitcode,
     rlogin_sendok,
     rlogin_ldisc,
     rlogin_unthrottle,