Introduce a sane interface function, from_backend(), for backends to

[u/mdw/putty] / ldisc.c

diff --git a/ldisc.c b/ldisc.c
index dda7cc3..10576d2 100644 (file)
--- a/ldisc.c
+++ b/ldisc.c
@@ -1,4 +1,11 @@
 #include <windows.h>
+#ifndef AUTO_WINSOCK
+#ifdef WINSOCK_TWO
+#include <winsock2.h>
+#else
+#include <winsock.h>
+#endif
+#endif
 #include <stdio.h>
 #include <ctype.h>
 
@@ -9,13 +16,11 @@
  */
 
 static void c_write (char *buf, int len) {
-    while (len--) {
-       int new_head = (inbuf_head + 1) & INBUF_MASK;
-       if (new_head != inbuf_reap) {
-           inbuf[inbuf_head] = *buf++;
-           inbuf_head = new_head;
-       }
-    }
+    from_backend(0, buf, len);
+}
+
+static void c_write1 (char c) {
+    c_write(&c, 1);
 }
 
 static char *term_buf = NULL;
@@ -34,8 +39,7 @@ static int plen(unsigned char c) {
 static void pwrite(unsigned char c) {
     if ((c >= 32 && c <= 126) ||
         (c >= 160)) {
-        char cc = (char)c;
-        c_write(&cc, 1);
+        c_write1(c);
     } else if (c < 128) {
         char cc[2];
         cc[1] = (c == 127 ? '?' : c + 0x40);
@@ -123,7 +127,8 @@ static void term_send(char *buf, int len) {
            }
            break;
          case CTRL('M'):              /* send with newline */
-           back->send(term_buf, term_buflen);
+           if (term_buflen > 0)
+                back->send(term_buf, term_buflen);
            if (cfg.protocol == PROT_RAW)
                back->send("\r\n", 2);
            else
@@ -153,7 +158,8 @@ static void simple_send(char *buf, int len) {
            term_buflen--;
        }
     }
-    back->send(buf, len);
+    if (len > 0)
+        back->send(buf, len);
 }
 
 Ldisc ldisc_term = { term_send };