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[unix-history] / usr / src / usr.bin / tip / aculib / biz31.c

diff --git a/usr/src/usr.bin/tip/aculib/biz31.c b/usr/src/usr.bin/tip/aculib/biz31.c
index aea769f..eccc57c 100644 (file)
--- a/usr/src/usr.bin/tip/aculib/biz31.c
+++ b/usr/src/usr.bin/tip/aculib/biz31.c
@@ -1,21 +1,30 @@
-/*     biz31.c 4.1     81/05/09        */
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)biz31.c    5.1 (Berkeley) %G%";
+#endif not lint
+

 #include "tip.h"
 
 #include "tip.h"
 

-#if BIZCOMP

 #define MAXRETRY       3               /* sync up retry count */
 #define MAXRETRY       3               /* sync up retry count */

-#define DISCONNECT     "\21\25\11\24"  /* disconnection string */
+#define DISCONNECT_CMD "\21\25\11\24"  /* disconnection string */

 
 

-static int sigALRM();
-static int timeout = 0;
+static int sigALRM();
+static int timeout = 0;
+static jmp_buf timeoutbuf;

 
 /*
 
 /*

- * Dial up on a BIZCOMP with either
+ * Dial up on a BIZCOMP Model 1031 with either

  *     tone dialing (mod = "f")
  *     pulse dialing (mod = "w")
  */
 static int
 biz_dialer(num, mod)
  *     tone dialing (mod = "f")
  *     pulse dialing (mod = "w")
  */
 static int
 biz_dialer(num, mod)

-char *num, *mod;
+       char *num, *mod;

 {
        register int connected = 0;
 
 {
        register int connected = 0;
 


@@ -32,7 +41,7 @@ char *num, *mod;
        echo(mod);
        echo("$\r$\n");
        echo("$>$.$ #\re$ ");                   /* disconnection sequence */
        echo(mod);
        echo("$\r$\n");
        echo("$>$.$ #\re$ ");                   /* disconnection sequence */

-       echo(DISCONNECT);
+       echo(DISCONNECT_CMD);

        echo("\r$\n$\r$\n");
        echo("$>$.$ #\rr$ ");                   /* repeat dial */
        echo(num);
        echo("\r$\n$\r$\n");
        echo("$>$.$ #\rr$ ");                   /* repeat dial */
        echo(num);


@@ -59,107 +68,112 @@ char *num, *mod;
        else
                flush("CONNECTION\r\n\07");
        if (timeout)
        else
                flush("CONNECTION\r\n\07");
        if (timeout)

-               biz_disconnect();       /* insurance */
-       return(connected);
+               biz31_disconnect();     /* insurance */
+       return (connected);

 }
 
 }
 

-bizw_dialer(num, acu)
-char *num, *acu;
+biz31w_dialer(num, acu)
+       char *num, *acu;

 {
 {

-       return(biz_dialer(num, "w"));
+
+       return (biz_dialer(num, "w"));

 }
 
 }
 

-bizf_dialer(num, acu)
-char *num, *acu;
+biz31f_dialer(num, acu)
+       char *num, *acu;

 {
 {

-       return(biz_dialer(num, "f"));
+
+       return (biz_dialer(num, "f"));

 }
 
 }
 

-biz_disconnect()
+biz31_disconnect()

 {
 {

-       write(FD, DISCONNECT, 4);
+
+       write(FD, DISCONNECT_CMD, 4);

        sleep(2);
        ioctl(FD, TIOCFLUSH);
 }
 
        sleep(2);
        ioctl(FD, TIOCFLUSH);
 }
 

-biz_abort()
+biz31_abort()

 {
 {

+

        write(FD, "\33", 1);
        write(FD, "\33", 1);

-       timeout = 1;

 }
 
 static int
 echo(s)
 }
 
 static int
 echo(s)

-register char *s;
+       register char *s;

 {
        char c;
 
 {
        char c;
 

-       while (c = *s++)
-               switch(c)
-               {
-                       case '$':
-                               read(FD, &c, 1);
-                               s++;
-                               break;
-                       case '#':
-                               c = *s++;
-                               write(FD, &c, 1);
-                               break;
-                       default:
-                               write(FD, &c, 1);
-                               read(FD, &c, 1);
-               }
+       while (c = *s++) switch (c) {
+
+       case '$':
+               read(FD, &c, 1);
+               s++;
+               break;
+
+       case '#':
+               c = *s++;
+               write(FD, &c, 1);
+               break;
+
+       default:
+               write(FD, &c, 1);
+               read(FD, &c, 1);
+       }

 }
 
 static int
 sigALRM()
 {
 }
 
 static int
 sigALRM()
 {

-       signal(SIGALRM, SIG_IGN);
-       printf("\07timeout waiting for reply\n");
+

        timeout = 1;
        timeout = 1;

+       longjmp(timeoutbuf, 1);

 }
 
 static int
 detect(s)
 }
 
 static int
 detect(s)

-register char *s;
+       register char *s;

 {
        char c;
 {
        char c;

+       int (*f)();

 
 

-       signal(SIGALRM, biz_abort);
+       f = signal(SIGALRM, sigALRM);

        timeout = 0;
        timeout = 0;

-       while (*s)
-       {
+       while (*s) {
+               if (setjmp(timeoutbuf)) {
+                       printf("\07timeout waiting for reply\n");
+                       biz31_abort();
+                       break;
+               }

                alarm(number(value(DIALTIMEOUT)));
                read(FD, &c, 1);
                alarm(0);
                alarm(number(value(DIALTIMEOUT)));
                read(FD, &c, 1);
                alarm(0);

-               if (timeout)
-                       return(0);

                if (c != *s++)
                if (c != *s++)

-                       return(0);
+                       break;

        }
        }

-       signal(SIGALRM, SIG_DFL);
-       return(1);
+       signal(SIGALRM, f);
+       return (timeout == 0);

 }
 
 static int
 flush(s)
 }
 
 static int
 flush(s)

-register char *s;
+       register char *s;

 {
        char c;
 {
        char c;

+       int (*f)();

 
 

-       signal(SIGALRM, sigALRM);
-       timeout = 0;
-       while (*s++)
-       {
+       f = signal(SIGALRM, sigALRM);
+       while (*s++) {
+               if (setjmp(timeoutbuf))
+                       break;

                alarm(10);
                read(FD, &c, 1);
                alarm(0);
                alarm(10);
                read(FD, &c, 1);
                alarm(0);

-               if (timeout)
-                       break;

        }
        }

-       signal(SIGALRM, SIG_DFL);
+       signal(SIGALRM, f);

        timeout = 0;                    /* guard against disconnection */
        timeout = 0;                    /* guard against disconnection */

-       return(1);

 }
 
 /*
 }
 
 /*


@@ -192,8 +206,8 @@ retry:
                if (chars(b) != 10) {
        nono:
                        if (already > MAXRETRY)
                if (chars(b) != 10) {
        nono:
                        if (already > MAXRETRY)

-                               return(0);
-                       write(fd, DISCONNECT, 4);
+                               return (0);
+                       write(fd, DISCONNECT_CMD, 4);

                        sleep(2);
                        already++;
                        goto retry;
                        sleep(2);
                        already++;
                        goto retry;


@@ -203,6 +217,5 @@ retry:
                                goto nono;
                }
        }
                                goto nono;
                }
        }

-       return(1);
+       return (1);

 }
 }

-#endif