vhangup to clear pty

[unix-history] / usr / src / libexec / telnetd / telnetd.c

diff --git a/usr/src/libexec/telnetd/telnetd.c b/usr/src/libexec/telnetd/telnetd.c
index d0afe58..cccb361 100644 (file)
--- a/usr/src/libexec/telnetd/telnetd.c
+++ b/usr/src/libexec/telnetd/telnetd.c
@@ -1,5 +1,5 @@
 #ifndef lint
 #ifndef lint

-static char sccsid[] = "@(#)telnetd.c  4.10 82/11/14";
+static char sccsid[] = "@(#)telnetd.c  4.14 82/12/29";

 #endif
 
 /*
 #endif
 
 /*


@@ -65,8 +65,8 @@ main(argc, argv)
                        fprintf(stderr, "telnetd: %s: bad port #\n", *argv);
                        exit(1);
                }
                        fprintf(stderr, "telnetd: %s: bad port #\n", *argv);
                        exit(1);
                }

+               sin.sin_port = htons((u_short)sin.sin_port);

        }
        }

-       sin.sin_port = htons((u_short)sin.sin_port);

 #ifndef DEBUG
        if (fork())
                exit(0);
 #ifndef DEBUG
        if (fork())
                exit(0);


@@ -83,7 +83,7 @@ main(argc, argv)
        }
 #endif
 again:
        }
 #endif
 again:

-       s = socket(0, SOCK_STREAM, 0, 0);
+       s = socket(AF_INET, SOCK_STREAM, 0, 0);

        if (s < 0) {
                perror("telnetd: socket");;
                sleep(5);
        if (s < 0) {
                perror("telnetd: socket");;
                sleep(5);


@@ -97,9 +97,9 @@ again:
        for (;;) {
                int s2;
 
        for (;;) {
                int s2;
 

-               s2 = accept(s, (caddr_t)0, 0);
+               s2 = accept(s, (caddr_t)0, 0, 0);

                if (s2 < 0) {
                if (s2 < 0) {

-                       perror("accept");
+                       perror("telnetd: accept");

                        sleep(1);
                        continue;
                }
                        sleep(1);
                        continue;
                }


@@ -131,9 +131,8 @@ doit(f)
                if (p > 0)
                        goto gotpty;
        }
                if (p > 0)
                        goto gotpty;
        }

-       dup2(f, 1);
-       printf("All network ports in use.\n");
-       exit(1);
+       fatal(f, "All network ports in use");
+       /*NOTREACHED*/

 gotpty:
        dup2(f, 0);
        cp[strlen("/dev/")] = 't';
 gotpty:
        dup2(f, 0);
        cp[strlen("/dev/")] = 't';


@@ -143,22 +142,16 @@ gotpty:
                close(t);
        }
        t = open(cp, 2);
                close(t);
        }
        t = open(cp, 2);

-       if (t < 0) {
-               dup2(f, 2);
-               perror(cp);
-               exit(1);
-       }
+       if (t < 0)
+               fatalperror(f, cp, errno);

        ioctl(t, TIOCGETP, &b);
        b.sg_flags = CRMOD|XTABS|ANYP;
        ioctl(t, TIOCSETP, &b);
        ioctl(p, TIOCGETP, &b);
        b.sg_flags &= ~ECHO;
        ioctl(p, TIOCSETP, &b);
        ioctl(t, TIOCGETP, &b);
        b.sg_flags = CRMOD|XTABS|ANYP;
        ioctl(t, TIOCSETP, &b);
        ioctl(p, TIOCGETP, &b);
        b.sg_flags &= ~ECHO;
        ioctl(p, TIOCSETP, &b);

-       if ((i = fork()) < 0) {
-               dup2(f, 2);
-               perror("fork");
-               exit(1);
-       }
+       if ((i = fork()) < 0)
+               fatalperror(f, "fork", errno);

        if (i)
                telnet(f, p);
        close(f);
        if (i)
                telnet(f, p);
        close(f);


@@ -168,10 +161,33 @@ gotpty:
        dup2(t, 2);
        close(t);
        execl("/bin/login", "telnet-login", 0);
        dup2(t, 2);
        close(t);
        execl("/bin/login", "telnet-login", 0);

-       perror("/bin/login");
+       fatalperror(f, "/bin/login", errno);
+       /*NOTREACHED*/
+}
+
+fatal(f, msg)
+       int f;
+       char *msg;
+{
+       char buf[BUFSIZ];
+
+       (void) sprintf(buf, "telnetd: %s.\n", msg);
+       (void) write(f, buf, strlen(buf));

        exit(1);
 }
 
        exit(1);
 }
 

+fatalperror(f, msg, errno)
+       int f;
+       char *msg;
+       int errno;
+{
+       char buf[BUFSIZ];
+       extern char *sys_errlist[];
+
+       (void) sprintf(buf, "%s: %s", msg, sys_errlist[errno]);
+       fatal(f, buf);
+}
+

 /*
  * Main loop.  Select from pty and network, and
  * hand data to telnet receiver finite state machine.
 /*
  * Main loop.  Select from pty and network, and
  * hand data to telnet receiver finite state machine.


@@ -566,10 +582,8 @@ cleanup()
        int how = 2;
 
        rmut();
        int how = 2;
 
        rmut();

-       vhangup();
-#ifndef notdef
+       vhangup();      /* XXX */

        ioctl(net, SIOCDONE, &how);
        ioctl(net, SIOCDONE, &how);

-#endif

        kill(0, SIGKILL);
        exit(1);
 }
        kill(0, SIGKILL);
        exit(1);
 }