+ /* One wants to be a bit careful about setting returnValue
+ * to one, since a one implies we did some useful work,
+ * and therefore probably won't be called to block next
+ * time (TN3270 mode only).
+ */
+ int returnValue;
+ int netin, netout, netex, ttyin, ttyout;
+
+ /* Decide which rings should be processed */
+
+ netout = ring_full_count(&netoring) &&
+ (flushline ||
+ (my_want_state_is_wont(TELOPT_LINEMODE)
+#ifdef KLUDGELINEMODE
+ && (!kludgelinemode || my_want_state_is_do(TELOPT_SGA))
+#endif
+ ) ||
+ my_want_state_is_will(TELOPT_BINARY));
+ ttyout = ring_full_count(&ttyoring);
+
+#if defined(TN3270)
+ ttyin = ring_empty_count(&ttyiring) && (shell_active == 0);
+#else /* defined(TN3270) */
+ ttyin = ring_empty_count(&ttyiring);
+#endif /* defined(TN3270) */
+
+#if defined(TN3270)
+ netin = ring_empty_count(&netiring);
+# else /* !defined(TN3270) */
+ netin = !ISend && ring_empty_count(&netiring);
+# endif /* !defined(TN3270) */
+
+ netex = !SYNCHing;
+
+ /* If we have seen a signal recently, reset things */
+# if defined(TN3270) && defined(unix)
+ if (HaveInput) {
+ HaveInput = 0;
+ (void) signal(SIGIO, inputAvailable);
+ }
+#endif /* defined(TN3270) && defined(unix) */
+
+ /* Call to system code to process rings */
+
+ returnValue = process_rings(netin, netout, netex, ttyin, ttyout, !block);
+
+ /* Now, look at the input rings, looking for work to do. */
+
+ if (ring_full_count(&ttyiring)) {
+# if defined(TN3270)
+ if (In3270) {
+ int c;
+
+ c = DataFromTerminal(ttyiring.consume,
+ ring_full_consecutive(&ttyiring));
+ if (c) {
+ returnValue = 1;
+ ring_consumed(&ttyiring, c);
+ }
+ } else {
+# endif /* defined(TN3270) */
+ returnValue |= telsnd();
+# if defined(TN3270)
+ }
+# endif /* defined(TN3270) */
+ }
+
+ if (ring_full_count(&netiring)) {
+# if !defined(TN3270)
+ returnValue |= telrcv();
+# else /* !defined(TN3270) */
+ returnValue = Push3270();
+# endif /* !defined(TN3270) */
+ }
+ return returnValue;
+}
+\f
+/*
+ * Select from tty and network...
+ */
+ void
+telnet(user)
+ char *user;
+{
+ sys_telnet_init();
+
+#if defined(ENCRYPT) || defined(AUTHENTICATE)
+ {
+ static char local_host[256] = { 0 };
+ int len = sizeof(local_host);
+
+ if (!local_host[0]) {
+ gethostname(local_host, &len);
+ local_host[sizeof(local_host)-1] = 0;
+ }
+ auth_encrypt_init(local_host, hostname, "TELNET", 0);
+ auth_encrypt_user(user);
+ }
+#endif
+# if !defined(TN3270)
+ if (telnetport) {
+#if defined(AUTHENTICATE)
+ if (autologin)
+ send_will(TELOPT_AUTHENTICATION, 1);
+#endif
+#if defined(ENCRYPT)
+ send_do(TELOPT_ENCRYPT, 1);
+ send_will(TELOPT_ENCRYPT, 1);
+#endif
+ send_do(TELOPT_SGA, 1);
+ send_will(TELOPT_TTYPE, 1);
+ send_will(TELOPT_NAWS, 1);
+ send_will(TELOPT_TSPEED, 1);
+ send_will(TELOPT_LFLOW, 1);
+ send_will(TELOPT_LINEMODE, 1);
+ send_will(TELOPT_ENVIRON, 1);
+ send_do(TELOPT_STATUS, 1);
+ if (env_getvalue((unsigned char *)"DISPLAY"))
+ send_will(TELOPT_XDISPLOC, 1);
+ if (eight)
+ tel_enter_binary(eight);
+ }
+# endif /* !defined(TN3270) */
+
+# if !defined(TN3270)
+ for (;;) {
+ int schedValue;
+
+ while ((schedValue = Scheduler(0)) != 0) {
+ if (schedValue == -1) {
+ setcommandmode();
+ return;
+ }
+ }