BSD 4_4_Lite2 release

[unix-history] / usr / src / usr.bin / telnet / terminal.c

diff --git a/usr/src/usr.bin/telnet/terminal.c b/usr/src/usr.bin/telnet/terminal.c
index 6d5ec80..b5ceeda 100644 (file)
--- a/usr/src/usr.bin/telnet/terminal.c
+++ b/usr/src/usr.bin/telnet/terminal.c
@@ -1,3 +1,40 @@
+/*
+ * Copyright (c) 1988, 1990, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)terminal.c 8.2 (Berkeley) 2/16/95";
+#endif /* not lint */
+

 #include <arpa/telnet.h>
 #include <sys/types.h>
 
 #include <arpa/telnet.h>
 #include <sys/types.h>
 


@@ -6,25 +43,60 @@
 #include "externs.h"
 #include "types.h"
 
 #include "externs.h"
 #include "types.h"
 

-Ring   ttyoring;
-char   ttyobuf[2*BUFSIZ];
-
-char
-    termEofChar,
-    termEraseChar,
-    termFlushChar,
-    termIntChar,
-    termKillChar,
-    termLiteralNextChar,
-    termQuitChar;
+Ring           ttyoring, ttyiring;
+unsigned char  ttyobuf[2*BUFSIZ], ttyibuf[BUFSIZ];
+
+int termdata;                  /* Debugging flag */
+
+#ifdef USE_TERMIO
+# ifndef VDISCARD
+cc_t termFlushChar;
+# endif
+# ifndef VLNEXT
+cc_t termLiteralNextChar;
+# endif
+# ifndef VSUSP
+cc_t termSuspChar;
+# endif
+# ifndef VWERASE
+cc_t termWerasChar;
+# endif
+# ifndef VREPRINT
+cc_t termRprntChar;
+# endif
+# ifndef VSTART
+cc_t termStartChar;
+# endif
+# ifndef VSTOP
+cc_t termStopChar;
+# endif
+# ifndef VEOL
+cc_t termForw1Char;
+# endif
+# ifndef VEOL2
+cc_t termForw2Char;
+# endif
+# ifndef VSTATUS
+cc_t termAytChar;
+# endif
+#else
+cc_t termForw2Char;
+cc_t termAytChar;
+#endif

 
 /*
  * initialize the terminal data structures.
  */
 
 
 /*
  * initialize the terminal data structures.
  */
 

+    void

 init_terminal()
 {
 init_terminal()
 {

-    ring_init(&ttyoring, ttyobuf, sizeof ttyobuf);
+    if (ring_init(&ttyoring, ttyobuf, sizeof ttyobuf) != 1) {
+       exit(1);
+    }
+    if (ring_init(&ttyiring, ttyibuf, sizeof ttyibuf) != 1) {
+       exit(1);
+    }

     autoflush = TerminalAutoFlush();
 }
 
     autoflush = TerminalAutoFlush();
 }
 


@@ -32,108 +104,137 @@ init_terminal()
 /*
  *             Send as much data as possible to the terminal.
  *
 /*
  *             Send as much data as possible to the terminal.
  *

- *             The return value indicates whether we did any
- *     useful work.
+ *             Return value:
+ *                     -1: No useful work done, data waiting to go out.
+ *                      0: No data was waiting, so nothing was done.
+ *                      1: All waiting data was written out.
+ *                      n: All data - n was written out.

  */
 
 
  */
 
 

-int
+    int

 ttyflush(drop)
 ttyflush(drop)

-int drop;
+    int drop;

 {
 {

-    int n;
+    register int n, n0, n1;

 
 

-    if ((n = ring_unsent_consecutive(&ttyoring)) > 0) {
+    n0 = ring_full_count(&ttyoring);
+    if ((n1 = n = ring_full_consecutive(&ttyoring)) > 0) {

        if (drop) {
            TerminalFlushOutput();
            /* we leave 'n' alone! */
        } else {
        if (drop) {
            TerminalFlushOutput();
            /* we leave 'n' alone! */
        } else {

-           n = TerminalWrite(tout, ttyoring.send, n);
+           n = TerminalWrite(ttyoring.consume, n);

        }
     }
        }
     }

-    if (n >= 0) {
-       ring_sent_acked(&ttyoring, n);
+    if (n > 0) {
+       if (termdata && n) {
+           Dump('>', ttyoring.consume, n);
+       }
+       /*
+        * If we wrote everything, and the full count is
+        * larger than what we wrote, then write the
+        * rest of the buffer.
+        */
+       if (n1 == n && n0 > n) {
+               n1 = n0 - n;
+               if (!drop)
+                       n1 = TerminalWrite(ttyoring.bottom, n1);
+               if (n1 > 0)
+                       n += n1;
+       }
+       ring_consumed(&ttyoring, n);
+    }
+    if (n < 0)
+       return -1;
+    if (n == n0) {
+       if (n0)
+           return -1;
+       return 0;

     }
     }

-    return n > 0;
+    return n0 - n + 1;

 }
 
 \f
 }
 
 \f

-#if    defined(unix)

 /*
 /*

- * Various signal handling routines.
+ * These routines decides on what the mode should be (based on the values
+ * of various global variables).

  */
 
  */
 

-void
-deadpeer()
-{
-       setcommandmode();
-       longjmp(peerdied, -1);
-}

 
 

-void
-intr()
-{
-    if (localchars) {
-       intp();
-       return;
-    }
-    setcommandmode();
-    longjmp(toplevel, -1);
-}
-
-void
-intr2()
+    int
+getconnmode()

 {
 {

-    if (localchars) {
-       sendbrk();
-       return;
+    extern int linemode;
+    int mode = 0;
+#ifdef KLUDGELINEMODE
+    extern int kludgelinemode;
+#endif
+
+    if (In3270)
+       return(MODE_FLOW);
+
+    if (my_want_state_is_dont(TELOPT_ECHO))
+       mode |= MODE_ECHO;
+
+    if (localflow)
+       mode |= MODE_FLOW;
+
+    if (my_want_state_is_will(TELOPT_BINARY))
+       mode |= MODE_INBIN;
+
+    if (his_want_state_is_will(TELOPT_BINARY))
+       mode |= MODE_OUTBIN;
+
+#ifdef KLUDGELINEMODE
+    if (kludgelinemode) {
+       if (my_want_state_is_dont(TELOPT_SGA)) {
+           mode |= (MODE_TRAPSIG|MODE_EDIT);
+           if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
+               mode &= ~MODE_ECHO;
+           }
+       }
+       return(mode);

     }
     }

+#endif
+    if (my_want_state_is_will(TELOPT_LINEMODE))
+       mode |= linemode;
+    return(mode);

 }
 
 }
 

-void
-doescape()
+    void
+setconnmode(force)
+    int force;

 {
 {

-    command(0);
-}
-#endif /* defined(unix) */
-\f
-/*
- * These routines decides on what the mode should be (based on the values
- * of various global variables).
- */
+#ifdef ENCRYPTION
+    static int enc_passwd = 0;
+#endif /* ENCRYPTION */
+    register int newmode;

 
 

+    newmode = getconnmode()|(force?MODE_FORCE:0);

 
 

-int
-getconnmode()
-{
-    static char newmode[16] =
-                       { 4, 5, 3, 3, 2, 2, 1, 1, 6, 6, 6, 6, 6, 6, 6, 6 };
-    int modeindex = 0;
+    TerminalNewMode(newmode);

 
 

-    if (dontlecho && (clocks.echotoggle > clocks.modenegotiated)) {
-       modeindex += 1;
-    }
-    if (hisopts[TELOPT_ECHO]) {
-       modeindex += 2;
-    }
-    if (hisopts[TELOPT_SGA]) {
-       modeindex += 4;
-    }
-    if (In3270) {
-       modeindex += 8;
+#ifdef  ENCRYPTION
+    if ((newmode & (MODE_ECHO|MODE_EDIT)) == MODE_EDIT) {
+       if (my_want_state_is_will(TELOPT_ENCRYPT)
+                               && (enc_passwd == 0) && !encrypt_output) {
+           encrypt_request_start(0, 0);
+           enc_passwd = 1;
+       }
+    } else {
+       if (enc_passwd) {
+           encrypt_request_end();
+           enc_passwd = 0;
+       }

     }
     }

-    return newmode[modeindex];
-}
+#endif /* ENCRYPTION */

 
 

-void
-setconnmode()
-{
-    TerminalNewMode(tin, tout, getconnmode());

 }
 
 
 }
 
 

-void
+    void

 setcommandmode()
 {
 setcommandmode()
 {

-    TerminalNewMode(tin, tout, 0);
+    TerminalNewMode(-1);

 }
 }